Reverse osmosis pumps, centrifugal pumps, plunger pumps, electric pumps, hydraulic pumps and water pumps, and control valves therefor and structural components and structural parts thereof; valves being parts of machines; rotary valves; spool valves
2.
METHOD AND COMPRESSOR ARRANGEMENT FOR COMPRESSING HYDROGEN
The invention relates to a compressor arrangement and method for compressing hydrogen produced by an electrolyser, wherein hydrogen is compressed to an intermediate pressure (20) by a first liquid ring machine (15) and the hydrogen is compressed from the intermediate pressure (20) to an outlet pressure by a second liquid ring machine (25, 35, 41, 42, 43, 44, 45). Pressure compensation between the outlet side (21) and the inlet side (22) of the first liquid ring machine (15) is permitted via a bypass line (16). The inlet pressure (18) on the inlet side (22) of the first liquid ring machine (15) is kept constant by changing the cross-section of the bypass line (16) with an adjustable valve (17). The hydrogen is compressed from the intermediate pressure (20) to the outlet pressure without the intermediate pressure (20) being kept constant.
F04C 19/00 - Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 28/26 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves using bypass channels
F04C 28/02 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for several pumps connected in series or in parallel
3.
BOOSTER-EJECTOR SYSTEM FOR CAPTURING AND RECYCLING LEAKAGE FLUIDS
A booster-ejector system captures and recycles leakage fluids from a process. When a pressure differential (head) of the process is above a threshold value, an ejector system uses motive fluid from a process high-pressure (HP) region to entrain and compress the leakage fluid, and direct it to a low pressure (LP) region. When the head is below the threshold value, a controller reconfigures a plumbing system and activates a leakage pump to pump the leakage fluid to the LP region. The system can include only one ejector, or a plurality thereof, which can be coupled such that the diffuser output of each ejector is directed to the suction input of the next ejector. At least one of the ejectors can include an exchangeable throat, which can impart a rotational component to the fluid. The HP and LP regions can be the output and input, respectively, of a compressor.
The invention relates to a method for removing reactive particles from a vacuum environment (14), in which a process gas is conveyed from the vacuum environment (14) by means of a vacuum pump (21, 22). The process gas is passed between the vacuum environment (14) and the vacuum pump (21, 22) through a first filter (31) and a second filter (32) to filter reactive particles from the process gas. A liquid ring pump (35) is used to discharge particles from the first filter (31) and the second filter (32). In a first phase of the method, the first filter (31) is active and the second filter (32) is passive; in a second phase of the method, the first filter (31) is passive and the second filter (32) is active. In the first phase, the process gas is passed through the first filter (31) and the liquid ring pump (35) discharges particles from the second filter (32). In the second phase, the process gas is passed through the second filter (32) and the liquid ring pump (35) discharges particles from the first filter (31). The invention also relates to a device for removing reactive particles from a vacuum environment and to a process system for producing monocrystalline silicon ingots.
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01D 46/44 - Auxiliary equipment or operation thereof controlling filtration
B01D 46/70 - Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
B01D 46/90 - Devices for taking out of action one or more units of multi-unit filters, e.g. for regeneration or maintenance
C30B 15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method
5.
MULTI-STAGE PUMP OR TURBINE FOR CONTROLLING FLUIDS WITH SIGNIFICANT VARIATIONS IN GAS FRACTION
A multi-stage hydraulic rotating machine (MSHRM) maintains near-optimal efficiency over widely varying conditions of service (COS) when controlling a fluid having a gas volume fraction (GVF) greater than 50% and large changes in volumetric flow rate (VFR) between stages. The MSHRM includes separately controlled stages having at least two different designs with different VFR ranges. Stage impellor differences can include impellor diameter, blade pitch, blade width, blade number, inlet diameter, and outlet diameter. Diffusers can differ in similar ways between stages. VFR ranges can be progressively higher or lower in successive stages. The stages can share a common VFR range within which incompressible liquids can be controlled. The MSHRM can function as a pump or turbine, and can be applicable to energy storage and recovery in "green" energy systems.
A trunnion ball valve provides a reliable seal when closed, while minimizing or eliminating frictional resistance during rotation of the ball. A pressurization chamber behind the upstream valve seat can be interconnected by one or more pressurization valves with either the upstream or the downstream process fluid. The interconnection can be via a single 3-way valve. When the valve is closed and the ball is fixed in orientation, the pressurization chamber is automatically connected to the upstream process fluid, thereby pressing the seat against the ball and ensuring a reliable seal. While the ball is being rotated, the pressurization chamber is automatically connected to the downstream process fluid, thereby substantially eliminating valve seat friction. Connection to the downstream process fluid can include connection to a small space in front of the upstream seat. An electronic controller can control both valve stem rotation and the pressurization valves.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
F16K 27/06 - Construction of housingsUse of materials therefor of taps or cocks
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
F16K 31/02 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic
7.
VALVE SYSTEM CONFIGURED TO PREVENT CORROSION AT PROCESS LIQUID/VAPOR INTERFACE
A valve system for controlling a corrosive process liquid flow, while avoiding corrosion due to a liquid/vapor interface of the process liquid, causes the process liquid to flow from the valve through a purge port into a vertical segment of a purge line. During valve initialization, a non-reactive gas backpressure within the purge line is controlled to establish the liquid/vapor interface at a desired height within the vertical segment, as determined by an interface level sensor, which can be ultrasonic. The vertical segment is constructed from, or lined with, a material that can withstand contact with the liquid/vapor interface. During valve operation, the non-reactive gas pressure can continue to be regulated, or a purge valve can be shut, trapping a fixed quantity of the non-reactive gas within the purge line. The valve can include a heater configured to prevent a molten process liquid from solidifying within the valve.
F16K 25/04 - Arrangements for preventing erosion, not otherwise provided for
F16K 1/52 - Means for additional adjustment of the rate of flow
F16K 17/02 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 49/00 - Means in or on valves for heating or cooling
A valve configured to control a flow of a process fluid includes a pair of packing seals separated by a seal gap space along a linear valve stem of the valve, and a pressurization port that can be used to apply a pressurizing fluid, such as nitrogen gas, to the seal gap at a gap pressure that is higher than the process fluid pressure, thereby ensuring that any leakage past the packing seals will be of pressurizing fluid into the process fluid and/or into the environment, and that no process fluid will escape into the environment. The pressure or flow rate of the pressurizing fluid can be monitored to detect and quantify any pressurization fluid leakage past either of the packing seals, so that a maintenance action can be applied to the valve, such as re-tightening or replacing at least one of the packing seals, or replacing the valve.
F16K 17/02 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
A valve for controlling a molten liquid includes an expansion port in liquid communication with an internal volume of the valve that is filled with the molten liquid. An expansion valve can be opened during unfreezing of the valve, to allow melting process substance to expand out of the internal volume into an expansion line as it is melted. During initialization of the valve, an inert gas source, pressure regulator, and ultrasonic transition level sensor can be used to establish a liquid/gas interface at a desired height within the expansion line. The valve can include a multi-zone heater, wherein a first of the zones is adjacent the expansion port, so that during unfreezing, after the first zone has been melted, the remaining zones can be sequentially activated in an order that ensures that each zone is activated only after an adjacent zone has been melted.
F16K 17/02 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 49/00 - Means in or on valves for heating or cooling
A bellows seal valve includes a pressurization port that can be used to apply a compensating pressure to the "atmosphere" side of the bellows, i.e. the side of the bellows that is opposite to the process fluid. The atmosphere side can be on the interior or exterior of the bellows. The compensating pressure can be greater than the process fluid pressure, to ensure that any leakage will be of pressurizing fluid into the process fluid or into the environment, and that no process fluid will escape into the environment. The pressure or flow rate of the pressurizing fluid can be monitored to detect bellows and packing leaks. A pressurizing fluid exit port can be provided, so that the pressurizing fluid can be circulated through the valve, thereby moderating the bellows temperature under conditions of extreme process fluid temperature.
F16K 31/126 - Operating meansReleasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
F16K 17/02 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 49/00 - Means in or on valves for heating or cooling
11.
APPARATUS FOR MEASURING THE PRESSURE AND FLOW RATE OF A HIGH TEMPERATURE CORROSIVE LIQUID
An apparatus for measuring a pressure of a corrosive or high temperature process liquid includes a pressure sensor in communication with the process liquid via a vertical tube. A buffer gas injected into the vertical tube forms a liquid/gas interface at a desired height. The buffer gas supply is then either isolated or regulated so as to cause the buffer gas pressure within the vertical tube to remain equal with the process liquid pressure. The pressure sensor indirectly measures the process liquid pressure by measuring the buffer gas pressure within the vertical tube, while remaining chemically and thermally protected from the process liquid. In embodiments, pressure measurements from a pair of gas buffered pressure sensors located upstream and downstream of a valve are combined with measurements of the process liquid temperature to determine a flow rate of the process liquid through the valve.
G01L 19/06 - Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
G01L 19/00 - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
G01L 19/08 - Means for indicating or recording, e.g. for remote indication
G01F 1/34 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
G01F 15/00 - Details of, or accessories for, apparatus of groups insofar as such details or appliances are not adapted to particular types of such apparatus
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
G01D 21/02 - Measuring two or more variables by means not covered by a single other subclass
G05D 7/06 - Control of flow characterised by the use of electric means
A valve includes at least one valve stem seal, such as a packing seal, that is included in a removable seal cartridge. The valve stem is connected to the actuator via a linkage, which can be removed to provide a linkage gap between the actuator and the valve stem. The seal cartridge can then be slid along the valve stem into the linkage gap and laterally removed from the valve, whereupon the seals within the seal cartridge can be refurbished. The valve can be a rotary or linear valve. In embodiments, the linkage gap can be increased by linear displacement of the actuator away from the valve stem. The seal cartridge can be re-installed in the valve after refurbishment, or a substantially identical replacement seal cartridge can be provided, and can be installed in the valve in replacement of the removed seal cartridge, thereby minimizing downtime of the valve.
Fluid flow control devices, systems, and methods may include a body extending along a longitudinal axis. The body has a fluid inlet at a first axial end of the body and a fluid outlet at a second axial end of the body. Channels may extend through an interior portion of the body between the fluid inlet at the first axial end and the fluid outlet at the second axial end. The channels collectively define fluid pathways through the body.
B33Y 80/00 - Products made by additive manufacturing
F16K 47/06 - Means in valves for absorbing fluid energy for decreasing pressure, the throttle being incorporated in the closure member with a throttle in the form of a helical channel
14.
METHOD OF CHARACTERIZING AND MONITORING ENERGY USAGE OF BATTERY POWERED WIRELESSLY LINKED DEVICES
A method of managing a battery of a wireless sensor or other battery- powered remote wireless device includes pre-characterizing the device's energy usage during its various activities and modes, placing the device in operation, opportunistically gathering device operational data obtained for purposes other than battery management, and estimating a status of the battery according to an analysis of the operational data in light of the pre-characterized information. The method further includes taking a battery management action according to the estimated battery status, such as recharging or replacing the battery when it is nearly exhausted, and/or modifying the operation of the device so as to extend the battery lifetime, for example by reducing or increasing the frequency of data transmissions, measurements, calculations, and/or other dynamic current events. The status estimate can further be in light of measurements provided by a simple current measuring circuit included in the device.
A plug-and-seat valve plug head assembly that resists abrasive erosion includes a hardened plug head, such as a ceramic plug head, attached to a plug stem without any soldering, welding, or braising attachment to the plug head. A diameter of a second portion of the plug head smoothly increases according to a plug diameter profile. A diameter of a first portion of the plug head is everywhere smaller than the plug diameter profile, and is maximal at a location spaced apart from the second portion. A plug head retainer overlaps and closely conforms to the first portion, while presenting an exterior surface that smoothly continues and extends the plug diameter profile. In embodiments, a plug head retainer blank attaches to the plug head retainer, capturing the plug head therebetween. Embodiments apply radial and/or axial stress to the plug head.
F16K 5/02 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfacesPackings therefor
F16K 27/06 - Construction of housingsUse of materials therefor of taps or cocks
F16K 25/04 - Arrangements for preventing erosion, not otherwise provided for
09 - Scientific and electric apparatus and instruments
Goods & Services
Industrial products and equipment including pumps, valves,
seals, turbines, instrumentation equipment including
actuators and positioners, energy recovery devices,
associated products for the foregoing, parts therefor, and
components and features thereof; computer hardware,
software, peripherals, and equipment for use in performing
industrial equipment monitoring services, and parts,
components and features thereof.
17.
HYDRAULIC BEARINGS AND RELATED DEVICES, ASSEMBLIES, AND METHODS
Devices and method include relatively moving elements having one or more bearing surfaces defining a gap between the elements into which a fluid is received. At least one of the bearing surfaces comprises a varying topography to provide pressurized volumes of the fluid in order to define a hydraulic bearing to support at least one of the elements during movement.
A pressure retained gasket seal provides enhanced resistance to hydraulic unloading by including a notch formed in a rear face of the gasket groove, thereby reducing intrusion of process fluid behind the gasket and improving hydraulic retention of the gasket seal. Embodiments increase the process fluid pressure limit of the gasket seal by a factor of two or three compared to gasket seals of the prior art. In embodiments, the gasket groove has a dovetail cross-section, thereby increasing resistance to process fluid pressure by requiring compression of the gasket before it can be dislodged from the groove. Embodiments form the gasket from flexible graphite, which can be initially shaped as an annulus and then forced by an applied load into the gasket groove in conformance with the notch. Embodiments include compressing the graphite to within 50% or even 70% of its maximum density during installation thereof.
09 - Scientific and electric apparatus and instruments
Goods & Services
Industrial products and equipment including pumps, valves,
seals, turbines, instrumentation equipment including
actuators and positioners, energy recovery devices,
associated products for the foregoing, parts therefor, and
components and features thereof; computer hardware,
software, peripherals, and equipment for use in performing
industrial equipment monitoring services, and parts,
components and features thereof.
20.
COMPENSATION ASSEMBLIES FOR FLUID HANDLING DEVICES AND RELATED DEVICES, SYSTEMS, AND METHODS
Pumps and fluid-handling devices for modifying at least one property of a fluid and related method comprise a compensation assembly including at least one biasing element to enable a hydraulic insert to move within a housing.
09 - Scientific and electric apparatus and instruments
Goods & Services
Industrial products and equipment including pumps, valves,
seals, turbines, instrumentation equipment including
actuators and positioners, energy recovery devices,
associated products for the foregoing, parts therefor, and
components and features thereof; computer hardware,
software, peripherals, and equipment for use in performing
industrial equipment monitoring services, and parts,
components and features thereof.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) High-pressure pumps for proportioning and testing purposes; automatic valves; electric actuators; LED position sensors; computer hardware; computer peripherals, namely computer hardware; equipment for use in performing industrial equipment monitoring services, namely, monitors to determine levels of water desalination used in the fields of power generation, chemical processing, water management, treatment, irrigation, flood control and desalination, and oil and gas production, transportation and processing; structural parts and components for the aforementioned goods; Downloadable computer software for use in database management to provide database management consultation services in the field of diagnosis, maintenance and repair of industrial pumps, valves, mechanical seals and related equipment
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) High-pressure pumps for proportioning and testing purposes; automatic valves; electric actuators; LED position sensors; computer hardware; computer peripherals, namely computer hardware; equipment for use in performing industrial equipment monitoring services, namely, monitors to determine levels of water desalination used in the fields of power generation, chemical processing, water management, treatment, irrigation, flood control and desalination, and oil and gas production, transportation and processing; structural parts and components for the aforementioned goods; Downloadable computer software for use in database management to provide database management consultation services in the field of diagnosis, maintenance and repair of industrial pumps, valves, mechanical seals and related equipment
24.
METHOD OF INTELLIGENTLY MANAGING PRESSURE WITHIN AN EVACUATED TRANSPORTATION SYSTEM
A high-speed transportation system comprises an evacuated travel conduit divided by closable gates into a plurality of segments associated with corresponding segment pumps that maintain operating vacuums within the segments when vehicles are present. When a segment is unoccupied, energy is saved by closing the adjoining gates and deactivating the associated segment pump, thereby deactivating the segment and allowing the segment's internal pressure to rise due to leakage. As a vehicle approaches, the segment pump is reactivated, lowering the internal pressure to the operating vacuum, and the gates are opened. Embodiments include a boom-tank system that can accelerate re-evacuation of a segment having an increased internal pressure by establishing fluid communication with at least one recently deactivated segment having a lower internal pressure. As a vehicle transits the conduit, a rolling, contiguous group of activated segments surrounding and in advance of the vehicle can be maintained.
A bulkhead passthrough connector containing a printed circuit board (PCB) for transferring electrical signals across a bulkhead to an electronic valve actuator, an electronic valve actuator configured to operate and communicate with a valve using a PCB through a bulkhead, the electronic valve actuator, and a method of assembling a bulkhead passthrough connector incorporating a PCB. The embodiments may include a passthrough partition which separates one side of the bulkhead from another. A PCB retainer may also be secured to the passthrough partition. The PCB is attached to the PCB retainer and extends from one side to another side of the bulkhead through the passthrough partition. The PCB further includes electrical paths printed on the PCB and electrical connectors located on both sides of the bulkhead to enable communication with external devices.
An apparatus for raising and lowering a cutting tool within a decoking drum, a decoking system and a method of raising and lowering a decoking system cutting tool. Instead of using metallic ropes, chains, or a self-propelled gear-based approach, non-metallic belts are secured at respective ends to a crosshead and one or more counterweights to enable vertical movement of the crosshead that in turn permits vertical movement of the cutting tool throughout the height of the drum. A motorized pulley system controls the movement of the belt, and preferably avoids having the motor be carried by the crosshead. The belts on each pulley are preferably arranged as cooperative sets so that within each set, both primary load belts and secondary load belts are present. Enhanced engagement between at least the primary load belts and the pulleys promotes greater load-bearing capability, while the secondary load belts are sufficiently strong to ensure positional stability of the crosshead and decoking tool upon damage to or failure of one or more of the primary load belts.
A pneumatically controlled flow booster includes a booster valve plug position sensor that enables control of the flow booster in a feedback loop, for example by a pneumatic valve positioner, thereby providing accurate, high speed, high flow control of both small and large actuator adjustments. Embodiments can accurately control a surge suppression valve over extended valve adjustment ranges and can fully open a surge suppression valve during a trip. The flow booster valve can include a spool and sleeve valve and/or a poppet valve. Embodiments provide bimodal flow boosting, whereby the output flow is less dependent on the valve plug position in a first position range, and more strongly dependent on the valve plug position in a second range.
F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
28.
APPARATUS AND METHOD FOR INTERCONNECTING AND ISOLATING VERY LARGE EVACUATED VOLUMES
A bridging module provides sealable interconnection between segments of an evacuated tube transportation system. A pair of gate elements are horizontally transitioned by a drive mechanism from a stored configuration offset from the tube segments to a deployed configuration where an expanding mechanism presses them outward to seal portals to the tube segments. The module can thereby be vented while the tube segments retain vacuum. A rail carriage in the module can bridge between overhead capsule support rails of the tube segments. A lifting mechanism can lift the rail carriage into a rail carriage section above the portals to allow the gate elements to deploy. The gate elements can be supported by rails and/or linear bearings, and pressed outward by opposed pneumatic pistons located between them, e.g. proximal to the four corners of the gate elements. The drive mechanism can include a motor with rack and pinion.
E05F 15/635 - Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by push-pull mechanisms, e.g. flexible or rigid rack-and-pinion arrangements
29.
FLUID FLOW CONTROL DEVICES AND RELATED SYSTEMS AND METHODS
Fluid flow control devices and related systems and methods may include a body or housing and a plug at least partially positioned in the body or housing to define a flow path. In a position of the plug, the plug and the body or housing may collectively define a fluid flow path.
Devices, systems, and methods for detecting properties of motion of at least one component of fluid exchange devices, such as, for example, a pressure exchange device or system.
F15B 3/00 - Intensifiers or fluid-pressure converters, e.g. pressure exchangersConveying pressure from one fluid system to another, without contact between the fluids
G01P 3/50 - Devices characterised by the use of electric or magnetic means for measuring linear speed
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Metal seals for use in mechanical and structural parts, components, and features thereof in the fields of power generation, chemical processing, water management, treatment, irrigation, flood control and desalination, and oil and gas production, transportation and processing Electric pumps for industrial use; valves being parts of machines; machine parts, namely, mechanical seals; turbines, other than for land vehicles; structural parts, components and features for the aforementioned goods High-pressure pumps for proportioning and testing purposes; automatic valves; electric actuators; LED position sensors; computer hardware; computer peripherals; equipment for use in performing industrial equipment monitoring services, namely, monitors to determine levels of water desalination used in the fields of power generation, chemical processing, water management, treatment, irrigation, flood control and desalination, and oil and gas production, transportation and processing; structural parts and components for the aforementioned goods; Downloadable computer software for use in database management to provide database management consultation services in the field of diagnosis, maintenance and repair of industrial pumps, valves, mechanical seals and related equipment Energy recovery ventilators and structural parts, components and features for the aforementioned goods Turbines for land vehicles and structural parts, components and features for the aforementioned goods
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Metal seals for use in mechanical and structural parts, components, and features thereof in the fields of power generation, chemical processing, water management, treatment, irrigation, flood control and desalination, and oil and gas production, transportation and processing Electric pumps for industrial use; valves being parts of machines; machine parts, namely, mechanical seals; turbines, other than for land vehicles; structural parts, components and features for the aforementioned goods High-pressure pumps for proportioning and testing purposes; automatic valves; electric actuators; LED position sensors; computer hardware; computer peripherals; equipment for use in performing industrial equipment monitoring services, namely, monitors to determine levels of water desalination used in the fields of power generation, chemical processing, water management, treatment, irrigation, flood control and desalination, and oil and gas production, transportation and processing; structural parts and components for the aforementioned goods; Downloadable computer software for use in database management to provide database management consultation services in the field of diagnosis, maintenance and repair of industrial pumps, valves, mechanical seals and related equipment Energy recovery ventilators and structural parts, components and features for the aforementioned goods Turbines for land vehicles and structural parts, components and features for the aforementioned goods
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Metal seals for use in mechanical and structural parts, components, and features thereof in the fields of power generation, chemical processing, water management, treatment, irrigation, flood control and desalination, and oil and gas production, transportation and processing Electric pumps for industrial use; valves being parts of machines; machine parts, namely, mechanical seals; turbines, other than for land vehicles; structural parts, components and features for the aforementioned goods High-pressure pumps for proportioning and testing purposes; automatic valves; electric actuators; LED position sensors; computer hardware; computer peripherals; equipment for use in performing industrial equipment monitoring services, namely, monitors to determine levels of water desalination used in the fields of power generation, chemical processing, water management, treatment, irrigation, flood control and desalination, and oil and gas production, transportation and processing; structural parts and components for the aforementioned goods; Downloadable computer software for use in database management to provide database management consultation services in the field of diagnosis, maintenance and repair of industrial pumps, valves, mechanical seals and related equipment Energy recovery ventilators and structural parts, components and features for the aforementioned goods Turbines for land vehicles and structural parts, components and features for the aforementioned goods
A dry running mechanical ball joint seal includes a spherical element penetrated by a central passage and suspended between support rings pressed by springs against the spherical element and forming a sliding dry seal therewith. A lip seal located between the support rings includes wipers pressed radially inward by a lip seal spring to form an additional seal with the spherical element. In embodiments directed to piping systems, a fluid is able to flow through the central passage. Other embodiments include a sliding rod directed through the central passage and sealed to the spherical element by a rod support within the central passage and also by at least one rod lip seal having a wiper pressed by a spring against the rod. The rod support can include a compressible packing material and/or a linear ball bearing sealed to the spherical element within the central passage.
F16J 15/3208 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
F16J 15/34 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
F16C 11/06 - Ball-jointsOther joints having more than one degree of angular freedom, i.e. universal joints
35.
COMPACT, MODULAR, PUMP OR TURBINE WITH INTEGRAL MODULAR MOTOR OR GENERATOR AND COAXIAL FLUID FLOW
A coaxial pump or turbine module includes an integral, modular motor or generator comprising a magnet structure containing radial or axial permanent magnets and/or induction coils detachably fixed to a rotor, and a stator housing detachably fixed to the module housing. Working fluid is directed axially through a flow path symmetrically distributed within an annulus formed between the module housing and the stator housing. The stator housing can be cooled by the working fluid, or by a cooling fluid flowing between passages of the flow path. The flow path can extend over substantially a full length and rear surface of the stator housing. A plurality of the modules can be combined into a multi-stage apparatus, with rotor speeds independently controlled by corresponding variable frequency drives. Embodiments include guide vanes and/or diffusers. The rotor can be fixed to a rotating shaft, or rotate about a fixed shaft.
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 5/167 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
H02K 9/193 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling mediumArrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with means for preventing leakage of the cooling medium
Systems and methods to determine the apparent density of a fluid being displaced by a pump. The apparent density may be determined by comparing an expected torque of the pump to an actual torque of the pump. The apparent density can also be used to detect irregular operating conditions.
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
G01N 9/32 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity by using flow properties of fluids, e.g. flow through tubes or apertures
The decoking control valve includes a piston, a cylinder, and a hydraulic rod seal at the outlet ports. The piston can move translational inside the cylinder along a fixed direction. The cylinder houses the hydraulic rod seal in a groove of the cylinder that places the hydraulic rod seal next to the piston. The hydraulic rod seal has a seal ring in contact with the piston, and the seal rings are activated. As the piston translates within the cylinder, the seal ring will activate at one outlet port and allow fluid to flow out of another outlet port.
C10B 33/00 - Discharging devices for coke ovensCoke guides
F16K 47/08 - Means in valves for absorbing fluid energy for decreasing pressure and having a throttling member separate from the closure member
F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
F16J 15/3208 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
F16K 11/02 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit
38.
Non-metallic belt-driven crosshead drive system for hydraulic decoking
An apparatus for raising and lowering a cutting tool within a decoking drum, a decoking system and a method of raising and lowering a decoking system cutting tool. Instead of using metallic ropes, chains, or a self-propelled gear-based approach, non-metallic belts are secured at respective ends to a crosshead and one or more counterweights to enable vertical movement of the crosshead that in turn permits vertical movement of the cutting tool throughout the height of the drum. A motorized pulley system controls the movement of the belt, and preferably avoids having the motor be carried by the crosshead. The belts on each pulley are preferably arranged as cooperative sets so that within each set, both primary load belts and secondary load belts are present. Enhanced engagement between at least the primary load belts and the pulleys promotes greater load-bearing capability, while the secondary load belts are sufficiently strong to ensure positional stability of the crosshead and decoking tool upon damage to or failure of one or more of the primary load belts.
A clamshell half of a split ring mechanical seal face assembly comprises a split seal ring half having circumferential and proximal surfaces that are seated against corresponding radial and axial support surfaces of a holder half. At least one extending member extends from a hole in the proximal surface to an arcuate slot in the axial support surface, or vice-versa, and thereby radially constrains the split seal ring half to remain unitized with the holder half during clamshell assembly, while permitting rotation of the split seal ring half about a shaft axis over a limited range, which in embodiments is between 2 degrees and 20 degrees. Embodiments further include a secondary seal between the holder half and split seal ring half that frictionally resists displacement of the split seal ring half.
A high temperature secondary seal between a rotating seal face adaptor sleeve and a rotating shaft does not consume additional axial space beyond the axial space occupied by the secondary seal. The seal includes a single ring drive collar comprising a plurality of radial directed bolts in tapped holes. As the bolts are tightened they enter a cylindrical cavity in the drive collar and impact therein a sloped surface of a crush ring. The vertical force thereby applied to the crush ring displaces the crush ring axially into a secondary graphite sealing element, thereby crushing the secondary sealing element against the adaptor sleeve and shaft, and forming a seal there between. The crush ring sloped surface can terminate in a vertical face, so that upon sufficient displacement of the crush ring the bolts abut the vertical face and impact the shaft, fixing the drive collar to the shaft.
F16J 15/34 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
F16J 15/48 - Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
Goods & Services
Computer hardware, software, systems, equipment and devices
all used in connection with and to perform industrial
equipment monitoring services; sensors, edge devices,
networks, gateways, platforms, portals, memory devices,
power supplies, connectors, terminals and hubs, all used in
performing industrial equipment monitoring services. Installation, maintenance, and repair of industrial
equipment; monitoring services, namely, monitoring equipment
functions and operations to ensure proper functioning, and
the need for maintenance, repair or replacement; data
collection and analyses in used in connection with
industrial equipment monitoring services; consulting
services in the field of industrial equipment monitoring
services.
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
Goods & Services
Computer hardware, software, systems, equipment and devices
used in connection with and to perform industrial equipment
monitoring services; sensors, edge devices, networks,
gateways, platforms, portals, memory devices, power
supplies, connectors, terminals and hubs, all used in
performing industrial equipment monitoring services. Installation, maintenance, and repair of industrial
equipment; monitoring services, namely, monitoring equipment
functions and operations to ensure proper functioning, and
the need for maintenance, repair or replacement; data
collection and analyses used in connection with industrial
equipment monitoring services; consulting services in the
field of industrial equipment monitoring services.
43.
CONTINUOUS TILT ANGLE INDICATOR FOR A SWING OR TILTING DISK CHECK VALVE
A sensing apparatus measures the disk tilt angle of a swing or tilting disk check valve without requiring penetration of the valve housing through a rotating shaft seal. A hinge pin extension is rotationally coupled to the valve disk, and a mechanical converter converts rotation thereof into translation of a magnet carrier within a non-magnetic extension of the valve housing. An LVDT core magnet is translated by the magnet carrier within the housing extension while surrounded by LVDT sensor coils mounted to the exterior of the housing extension. The LVDT core magnet and sensor coils thereby provide an LVDT output signal that indicates the tip angle of the valve disk. Embodiments include threaded coupling of the hinge pin extension to the magnet carrier, or coupling therebetween by a converter pin fixed to one of them into angled helical slot of a cylinder fixed to the other of them.
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
F16K 15/03 - Check valves with guided rigid valve members with a hinged closure member
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
44.
VALVE SEATS, VALVE ASSEMBLIES, AND RELATED METHODS
Valve seats may include an insert and an outer housing. The insert may comprise a first material and the outer housing may comprise a second material. Valve assemblies and related method may include valve seats.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
F16K 25/00 - Details relating to contact between valve members and seats
45.
APPARATUS AND METHOD FOR EVACUATING VERY LARGE VOLUMES
A target volume evacuation system includes a turbo compressor and a vacuum pump, the system being operable in a first configuration to reduce the target volume pressure from ambient to a first intermediate pressure, e.g. between 200 mbar and 50 mbar, and in a second configuration to further reduce the pressure from a second intermediate pressure, e.g. 10 mBar, to a target partial vacuum, e.g. between 0.1 and 1 mbar. The turbo compressor can be driven electrically or by fuel combustion, and can be a conventional or modified turbojet engine. A plurality of turbo compressors can be transitioned from parallel to series operation. The pressure can be reduced from the first to the second intermediate pressure by venting the target volume to a boom-tank volume and/or by configuring the turbo compressor system to provide backing to the vacuum pumping system. The invention is applicable to a hyperloop transport system.
Valve and related assemblies, systems, and methods may include a self-cleaning feature that may be configured to at least partially displace material from a portion of the valve. Such valves may be utilized in a pressure exchanger.
Devices and systems for exchanging properties between at least two fluid streams and related methods may include a valve device comprising a valve actuator configured to move at variable rates in order to selectively fill and empty at least one tank. Devices for exchanging properties between at least two fluid streams may include a valve device comprising staggered and overlapping openings positioned along a path of a valve actuator. The staggered and overlapping openings may be configured to selectively and gradually place an inlet in communication with at least one tank.
Pressure exchange devices, systems, and related methods may include a tank, a piston, a valve device, and one or more sensors for monitoring a position of the piston in the tank.
Pressure exchange devices and related systems may include a valve device configured to selectively place a fluid at a first higher pressure in communication with another fluid at a lower pressure in order to pressurize the another fluid to a second higher pressure. Methods of exchanging pressure between at least two fluid streams may include a pressure exchanger having two low pressure inlets.
Devices for exchanging properties, such as pressure, between at least two fluid streams and related methods may include pistons coupled to a valve stem. The valve stem and valve body may be configured to define a primary seal between the one or more pistons and the valve body and a secondary seal between the one or more pistons and the valve body.
Pistons and related methods may be configured to separate fluids and to at least partially prohibit one fluid from traveling to one side of the piston from another side of the piston. Pressure exchange devices and systems may include such pistons.
F15B 3/00 - Intensifiers or fluid-pressure converters, e.g. pressure exchangersConveying pressure from one fluid system to another, without contact between the fluids
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
Goods & Services
(1) Computer hardware, downloadable computer software for use in connection with performing industrial equipment monitoring services, recorded computer software for use in monitoring industrial equipment and parts and components thereof, downloadable software for collecting, storing, managing and transmitting electronic data in the field of industrial equipment, wired and wireless computer peripherals, edge devices, namely computer hardware and software for controlling data flow at the boundaries between computer networks, network routers, network servers, wireless network extenders and repeaters all for use in connection with and to perform industrial equipment monitoring services, computer network routers, computer network hubs, gateway routers in the nature of computer control hardware, mobile computing and operating platforms consisting of data transceivers, wired and wireless networks and gateways for collection, management and transmission of data, downloadable computer software platforms for collection and management of data, downloadable software for use in generating portals used in the fields of industrial equipment monitoring, installation, maintenance and repair purposes; recorded computer software platforms for use in connection with and to perform industrial equipment monitoring services, electronic connectors, power connectors, all of the foregoing for use in performing industrial equipment monitoring services. (1) Installation, maintenance, and repair of industrial equipment in the nature of industrial pumps, valves, seals, and parts and components thereof; collection of functioning and operating data of industrial equipment for equipment monitoring, installation, maintenance and repair purposes; consulting services in the field of the repair and maintenance of industrial equipment directed to the proper functioning and operation of industrial equipment; analyzing operating and maintenance data of industrial equipment for the purpose of maintaining and repairing functional issues of industrial equipment.
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
Goods & Services
(1) Computer hardware, downloadable computer software for use in connection with performing industrial equipment monitoring services, recorded computer software for use in monitoring industrial equipment and parts and components thereof, downloadable software for collecting, storing, managing and transmitting electronic data in the field of industrial equipment, wired and wireless computer peripherals, wired and wireless electronic sensors for monitoring and controlling industrial equipment, edge devices, namely computer hardware and software for controlling data flow at the boundaries between computer networks, network routers, network servers, wireless network extenders and repeaters all for use in connection with and to perform industrial equipment monitoring services, computer network routers, computer network hubs, gateway routers in the nature of computer control hardware, mobile computing and operating platforms consisting of data transceivers, wired and wireless networks and gateways for collection, management and transmission of data, downloadable computer software platforms for collection and management of data, downloadable software for use in generating portals used in the fields of industrial equipment monitoring, installation, maintenance and repair purposes; recorded computer software platforms for use in connection with and to perform industrial equipment monitoring services, computer memory devices, power supplies, electronic connectors, power connectors, computer terminals and computer network hubs, all of the foregoing for use in performing industrial equipment monitoring services. (1) Installation, maintenance, and repair of industrial equipment in the nature of industrial pumps, valves, seals, and parts and components thereof; collection of functioning and operating data of industrial equipment for equipment monitoring, installation, maintenance and repair purposes; consulting services in the field of the repair and maintenance of industrial equipment directed to the proper functioning and operation of industrial equipment; analyzing operating and maintenance data of industrial equipment for the purpose of maintaining and repairing functional issues of industrial equipment.
54.
ELECTRONICALLY CONTROLLED MOTOR-DRIVEN DEVICE WITH VIBRATIONAL ACOUSTIC ALERT CAPABILITY
An electronically controlled, motor-driven device is able to issue locally perceptible acoustic alerts by causing the electric motor to vibrate, which in embodiments can include vibrations at a resonant frequency of the device. Embodiments encode information relevant to the alert as amplitude and/or frequency modulations of the acoustic vibrational alerts. The motor can be an AC motor or a DC motor. In embodiments, the motor-driven device is an electronically controlled valve actuator or electronically controlled pump. The device can be in communication with a remote monitoring station, or the electronic controller can be remotely located.
An electronic controller of a valve actuator predictively calculates motor inputs that will cause the actuator to apply desired forces or torques to a valve. A force/torque sensor of the actuator measures applied force or torque at the motor output and/or valve to verify the applied force or torque and enable updating of calibration settings as needed. Upon failure of the force/torque sensor, embodiments continue predictive operation without sensor verification or calibration updates. Upon failure of the predictive control, embodiments continue valve actuation under reactive control via the force/torque sensor. Connection to a calibration valve simulator enables embodiments to perform an initial self-calibration using the force/torque sensor of the actuator. The motor can be a variable frequency driven AC motor or a DC motor. The calibration can incorporate mechanical properties of an actuator gear train.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
A near field energized electronic valve actuator includes a power receiver that enables powering of control electronics using wireless RF energy received from an external device such as a laptop computer or smart cellular telephone handset when conventional power is unavailable to the actuator, thereby enabling exchange of data between the external device and the control electronics. Embodiments further enable data exchange between the control electronics and non-volatile memory during the wireless energization. The data can be exchanged, for example, during initial configuration of the actuator before customer delivery, during an unpowered maintenance period to retrieve operational log information stored by the control electronics, and/or to retrieve valve position information measured by a position sensor and/or fault-relevant data from the actuator when power has been interrupted due to an actuator or valve failure.
F16K 31/02 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic
F16K 27/00 - Construction of housingsUse of materials therefor
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 35/00 - Means to prevent accidental or unauthorised actuation
57.
MECHANICAL SEAL WITH HIGH PRESSURE HIGH TEMPERATURE SECONDARY SEAL
A secondary seal of a mechanical seal comprises an annular sealing gasket and backing plate surrounding a cylindrical sealing surface, which all can be made of the same metallic material. The gasket is C-shaped in cross section, and is axially pressed during operation into a C-shaped groove formed in the backing plate that is shallower and larger in inner diameter than the gasket, whereby the gasket, when pressed into the groove, deforms radially inward and seals against both the backing plate and the sealing surface. The contact area between the gasket and sealing surface increases with pressure. In embodiments, when the pressure is released, the gasket retracts from the sealing surface, enabling easy disassembly and allowing axial movement of the gasket and backing plate. Highly polished surfaces of the gasket and sealing surface can allow axial motion thereof during operation to maintain the seal face gap.
Valve stem packing assemblies and related methods may include at least one end ring and at least one sealing ring. The at least one end ring may include an inner ring and an outer ring. Valves include a valve body, a valve stem, and a valve stem packing assembly.
A bulkhead passthrough connector containing a printed circuit board (PCB) for transferring electrical signals across a bulkhead to an electronic valve actuator, an electronic valve actuator configured to operate and communicate with a valve using a PCB through a bulkhead, the electronic valve actuator, and a method of assembling a bulkhead passthrough connector incorporating a PCB. The embodiments may include a passthrough partition which separates one side of the bulkhead from another. A PCB retainer may also be secured to the passthrough partition. The PCB is attached to the PCB retainer and extends from one side to another side of the bulkhead through the passthrough partition. The PCB further includes electrical paths printed on the PCB and electrical connectors located on both sides of the bulkhead to enable communication with external devices.
A bulkhead passthrough connector containing a printed circuit board (PCB) for transferring electrical signals across a bulkhead to an electronic valve actuator, an electronic valve actuator configured to operate and communicate with a valve using a PCB through a bulkhead, the electronic valve actuator, and a method of assembling a bulkhead passthrough connector incorporating a PCB. The embodiments may include a passthrough partition which separates one side of the bulkhead from another. A PCB retainer may also be secured to the passthrough partition. The PCB is attached to the PCB retainer and extends from one side to another side of the bulkhead through the passthrough partition. The PCB further includes electrical paths printed on the PCB and electrical connectors located on both sides of the bulkhead to enable communication with external devices.
Heat exchangers include at least one looped tube having at least one section that is laterally offset from another section of the looped tube. Fluid cooling systems and seal systems may include such heat exchangers.
62.
POSITION SENSORS FOR VALVE SYSTEMS AND RELATED ASSEMBLIES, SYSTEMS AND METHODS
Positioner assemblies may be configured to sense at least one position of at least a portion of a valve assembly that is moved along a first axis of movement. A movable element of the positioner assembly is configured to rotate about a second axis of movement, where the first axis of movement is substantially parallel to the second axis of movement. Valve systems and methods of sensing a position of a component of a valve system may include such a positioner assembly
A valve positioner monitors a valve stem position by remotely sensing a magnet attached to a coupler shaft that does not penetrate a sealed enclosure surrounding the positioner. A torsion spring, which can be helical or spiral, concentrically surrounds the shaft and is fixed to the shaft and frictionally coupled to a fixed surface by a clutch ring that coaxially surrounds the spring and is vertically pressed against the fixed surface. The torsion spring thereby suppresses backlash, vibration, and chatter by maintaining a torsional force on the shaft. The clutch ring can include a notch or slot cooperative with a key tab rotationally fixed to the coupler shaft so as to limit a range of rotation of the coupler shaft. The positioner is rendered compact by the concentric arrangement of its elements, so that embodiments can be used in place of legacy positioners.
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 5/10 - Means for additional adjustment of the rate of flow
64.
MODULAR, MULTI-STAGE, INTEGRAL SEALED MOTOR PUMP WITH INTEGRALLY-COOLED MOTORS AND INDEPENDENTLY CONTROLLED ROTOR SPEEDS
An integral motor pump module directs at least 90% of its rotor discharge over at least 50% of its motor housing surface, thereby cooling the motor with little or no need for a separate flow path. The discharge can flow through an annulus formed between the motor and pump housings, and can extend over substantially all of the sides and rear of the motor housing. The rotor can be fixed to a rotating shaft, or rotate about a fixed shaft, which can be threaded into the motor and/or module housing. A plurality of the modules can be combined into a multi-stage pump, with rotor speeds independently controlled by corresponding variable frequency drives. The motor can be a radial or axial permanent magnet or induction motor. A separate cooling flow can provide additional cooling e.g. when pumping heated process fluids. Embodiments include guide vanes and/or diffusers.
A capacitance measuring apparatus and method detects gas/liquid and liquid/gas transitions by monitoring a sensing capacitor having a gap in fluid communication with a monitored volume. The capacitor electrodes can be any arrangement that does not obstruct drainage, such as parallel plates or concentric cylinders. Embodiments have smooth and/or low wetting surfaces. Detection thresholds are automatically set to account for remnant drops and coatings of liquid, and can be automatically readjusted if additional liquid drains or a different liquid is introduced. Embodiments include an insulating layer to prevent conduction through a conductive liquid. A second capacitor can be included in series and/or the insulating layer can create a second virtual capacitor in series with the sensing capacitor gap to provide high sensitivity at low capacitance. The sensing capacitor can be combined in a cluster with a pressure sensor and/or temperature sensor.
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
G01N 27/30 - Electrodes, e.g. test electrodesHalf-cells
An axial thrust balancing mechanism for a rotating shaft apparatus such as a rotary pump provides self-regulating thrust compensation while avoiding contact and wear between rotating and static elements. A rotor fixed to the shaft includes a cylindrical male section proximal to but not extending within a cylindrical female section of a non-rotating stator, such that a gap formed therebetween is varied in width by axial thrust shaft displacements. Pressurized fluid within the female section applies a thrust-compensating force to the rotor that is controlled by the gap size. The female section is larger in diameter than the male section, preventing any contact therebetween. The disclosed mechanism can be combined with a thrust-compensating drum to reduce the thrust to a residual level that can be regulated. The rotor and stator can be stepwise varied to provide a plurality of gaps and intermediate chambers therebetween.
A fluid jet nozzle for a decoking tool, a decoking tool and method of operating same. The nozzle includes a nozzle assembly for use in a fluid jet decoking tool. The assembly includes a housing to hold one or more nozzles that are used to spray or otherwise distribute decoking fluid. An internal flowpath that extends from an inlet of the nozzle to an outlet of the nozzle defines a tapered shape such that when the decoking fluid passes through the nozzle, the flowpath produces a predominantly coherent flow pattern in the fluid.
A shockwave-inducing mechanical rotating shaft seal includes a seal face gap having at least one section of converging and then diverging gap width that supersonically accelerates compressible fluid escaping through the seal gap, thereby causing a shockwave that reduces the fluid pressure and provides a high pressure fluid seal with significantly reduced viscous heating and gap width. A plurality of the converging-diverging sections can be provided, having a combined width between 0.004 and 0.008 inches. The converging-diverging sections can be configured to accelerate the fluid to a Mach number less than 4. The gap can further include a section of flat, parallel seal faces that induce viscous stresses in the fluid, thereby further reducing the fluid pressure. The seal can be configured with axially directed seal faces or radially directed seal faces, and/or used as a pre-conditioner in combination with a conventional downstream mechanical fluid seal.
A compact, energy efficient air cooling system for a rotating shaft bearing module includes a Coanda surface having a periphery that smoothly curves from a radial center to axial alignment with a side of the module. A fan blade mounted on the shaft directs an airflow radially parallel and adjacent to the Coanda surface, causing the airflow to be bent by the Coanda effect from radial to axial, and to be directed along the side of the housing. Embodiments that can be applied to existing housings include a Coanda panel adjacent to the housing end face. A double suction fan blade can draw both external air and air from between the panel and the housing. In other embodiments the housing end face itself is a Coanda surface. A fan cover can have an inwardly curved periphery that forms a reduced gap or nozzle with the Coanda surface.
An improved rotor or stator split ring seal assembly includes a flexible ring-advancing mechanism that advances at least one of the split ring halves radially inward, so that during assembly the split ring halves meet before adjacent elastomeric members, thereby preventing the elastomeric members from expanding between the seal ring halves and interfering with their alignment. The ring-advancing mechanism is flexed as the seal is assembled, thereby allowing the ring halves to be seated in the housing. The ring-advancing mechanism can be removable after assembly or internal to the seal. In various embodiments, the ring-advancing mechanism is a flexible bracket, a coil spring, or a vertical or horizontal leaf spring. Separate, identical ring-advancing mechanisms can be included with each of the housing halves so as to advance the split ring halves symmetrically.
A split seal ring having end faces that self-align in both the axial and radial directions is prepared by forming an opposing first pair of angled grooves extending from an inner edge partway across the seal ring inner diameter, and a second pair of angled grooves extending from the inner edge partway across the seal ring rear surface. In embodiments, corresponding grooves meet to form V- shapes. Additional grooves can extend from the outer edge partway across the inner diameter. Corresponding grooves extending from the outer and inner edges on the inner diameter can terminate at locations that are offset radially and/or angularly. By applying an outward force, the seal ring is split at the groove locations into split ring sections having mating end faces. The resulting end face geometry is sufficiently complex to cause both radial and axial realignment as the seal ring halves are mated together.
A valve assembly includes a valve body having a seat-retainer chamber with a floating seat ring disposed adjacent an inner sidewall of the seat-retainer chamber. The floating seat ring is configured to contact a first portion of a plug head at a single annular location prior to a second portion of the plug head contacting a valve primary seat during a closing stroke of the plug head. A static seal is located radially between the floating seat ring and the inner sidewall of the seat-retainer chamber.
A dry running mechanical seal is able to form a direct contact seal for extended periods at both low and high rotational speeds without undue heating or wear of the seal faces. A rear surface of the stator face and corresponding surface of a mounting plate are both lapped for maximum direct contact transfer of heat. Air from a region surrounding the shaft is circulated through a cooling annulus directly behind the stator face and out through exit ports. In embodiments, enlarged scallops or other features on the rotor seal face enhance air turbulence near the seal faces. In various embodiments a surface supporting a dynamic gasket is polished smooth, thereby reducing gasket drag, minimizing the required pressing force between the seal faces, and reducing frictional heating. In embodiments, the rotor seal face shape is optimized to minimize pressure distortions at high pressure.
An apparatus for raising and lowering a cutting tool within a decoking drum, a decoking system and a method of raising and lowering a decoking system cutting tool. Instead of using metallic ropes, chains, or a self-propelled gear-based approach, non-metallic belts are secured at respective ends to a crosshead and one or more counterweights to enable vertical movement of the crosshead that in turn permits vertical movement of the cutting tool throughout the height of the drum. A motorized pulley system controls the movement of the belt, and preferably avoids having the motor be carried by the crosshead. The belts on each pulley are preferably arranged as cooperative sets so that within each set, both primary load belts and secondary load belts are present. Enhanced engagement between at least the primary load belts and the pulleys promotes greater load-bearing capability, while the secondary load belts are sufficiently strong to ensure positional stability of the crosshead and decoking tool upon damage to or failure of one or more of the primary load belts.
A permanent magnet submersible motor for electric submersible pump systems and a method of making the rotor of such a motor. The unitary construction of the rotor shaft and the yoke provides improved protection of the damage-prone magnets, while the larger effective shaft diameter also improves shaft bending resistance. Shaped form closures on the yoke promote secure magnet retention, even under highly centrifugal loads, while an exterior cladding tube and a cast resin filler material are used to further secure the magnets around the yoke periphery while also providing hermetic sealing against a working fluid.
Overheating of a process liquid retained in a reservoir of a multiphase pump during extended gas slugs is avoided by circulating a cooling liquid in thermal contact with a process liquid through an external cooling apparatus, which can include a heat exchanger. In some embodiments, process liquid from the reservoir is circulated through the cooling loop, while in other embodiments a separate cooling liquid is circulated between a reservoir heat exchanger and the external cooling apparatus. The liquid in the cooling loop can be circulated by a separate cooling pump, or process liquid can be circulated through the cooling loop due to a pressure differential between an inlet and an outlet of the cooling loop within the multiphase pump. The multiphase pump can be a twin screw pump, and the reservoir can be formed between outer and inner casings of the multiphase pump.
F04C 2/107 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
F04C 15/06 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
77.
MULTI-PHASE PUMPING SYSTEM WITH SELF-PURGING FILTRATION
An apparatus and method prevent entrained solids from entering a pump by directing a process stream through an active upstream filter that removes the solids, and then through a downstream idle filter where the process stream purges the filter of previously retained solids. The flow path is periodically switched to exchange the roles of the filters, so that none of the filters is saturated, and the solids remain in the process flow but bypass the pump. Any need for a low pressure destination for purged solids and purging fluid and/or any environmental impact of dumping process fluid and solids into the environment is thereby avoided. Partially opened valves can be used to divert only part of the downstream flow for filter purging. Selectable paths can be included for which no filters are purged. The downstream flow can be divided and used to simultaneously purge a plurality of idle filters.
F04C 13/00 - Adaptations of machines or pumps for special use, e.g. for extremely high pressures
F04C 2/16 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
F04C 15/06 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
A valve includes a valve body having a fluid flow path extending therethrough, a valve seat located in the valve body, and a valve disc located in the fluid flow path of the valve body. The disc is rotatable between a fully open position and an intermediate position about an axis substantially perpendicular to a longitudinal axis of the disc. The disc is also translatable between the intermediate position and a fully closed position in a direction substantially parallel to the longitudinal axis of the disc. Such a valve may be incorporated into a fluid line of a fluid system.
F16K 1/22 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
The decoking control valve includes a piston, a cylinder, and a hydraulic rod seal at the outlet ports. The piston can move translational inside the cylinder along a fixed direction. The cylinder houses the hydraulic rod seal in a groove of the cylinder that places the hydraulic rod seal next to the piston. The hydraulic rod seal has a seal ring in contact with the piston, and the seal rings are activated. As the piston translates within the cylinder, the seal ring will activate at one outlet port and allow fluid to flow out of another outlet port.
F16K 3/22 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
The decoking control valve includes a piston, a cylinder, and a hydraulic rod seal at the outlet ports. The piston can move translational inside the cylinder along a fixed direction. The cylinder houses the hydraulic rod seal in a groove of the cylinder that places the hydraulic rod seal next to the piston. The hydraulic rod seal has a seal ring in contact with the piston, and the seal rings are activated. As the piston translates within the cylinder, the seal ring will activate at one outlet port and allow fluid to flow out of another outlet port.
F16K 3/22 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
A parallel slide gate valve includes a valve body comprising an interior surface, and an obturator therein. A portion of the interior surface defines a groove having a longitudinal axis oriented substantially peipendicular to a direction of flow through the valve body. The groove has a first width at a first end proximate to the fluid flow path and a second width at a second end distal from the fluid flow path, the second width smaller than the first width. The obturator is at least partially within the at least one groove. The obturator is configured to translate from the first end of the at least one groove toward the second end of the at least one groove as the obturator moves from a closed position to an open position.
F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
F16K 3/314 - Forms or constructions of slidesAttachment of the slide to the spindle
F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
A centrifugal pump with a rotating impeller and a rotating diffuser. The diffuser may be rotated with a controlled speed to broaden the operational range of the pump. Such control may be done independently of the rotational speed of the impeller to tailor pump operation to a particular NPSH, efficiency, fluid flow or related requirement. In one preferred form, the impeller and diffuser are made to counter-rotate relative to one another, while the independent rotational speed of each may be provided by one or more motors, as well as a variable-speed transmission coupled to such motor or motors. Such a pump is optimized for specific speed operating ranges beneath those associated with axial flow pump configurations.
A method of operating a nuclear reactor includes operating a valve actuator to open and close a valve in fluid communication with a nuclear reactor fluid control system. The valve actuator includes a motor having windings of magnet wire. The magnet wire includes a layer of insulating material disposed over a conductor. The layer of insulating material comprises polyetheretherketone (PEEK) and has a thickness between about 0.025 mm and about 0.381 mm. A method of replacing a valve actuator motor with such a motor having windings formed of PEEK-insulated magnet wire is also disclosed. A method of coupling a valve actuator with such a motor having windings formed of PEEK-insulated magnet wire to a valve is also disclosed.
H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
G21C 9/00 - Emergency protection arrangements structurally associated with the reactor
An adjustable trunnion valve includes an obturator, a valve stem, at least one valve seal, and a trunnion. The trunnion and obturator are configured to translate the obturator along a longitudinal axis extending through the trunnion and the obturator upon rotation of the valve stem beyond one or both of its open position and its closed position. A method of operating an adjustable trunnion valve having an obturator coupled to a trunnion and a valve stem includes passing a fluid through the adjustable trunnion valve and rotating the valve stem to rotate the obturator about an axis of rotation and to simultaneously translate the obturator in a direction along the axis of rotation while the obturator is supported by the trunnion and while the fluid flows through the adjustable trunnion valve.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
F16K 5/08 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary Details
F16K 27/06 - Construction of housingsUse of materials therefor of taps or cocks
85.
BEARING ISOLATOR SEAL WITH ENHANCED ROTOR DRIVE COUPLING
A bearing isolator seal provides enhanced coupling and stability of the rotor to the shaft, without undue seal enlargement, by including a plurality of drive O-rings in a common retention groove. In embodiments, the isolator seal accommodates axial rotor misalignment up to a maximum permitted axial misalignment, which can be at least 0.025". Embodiments include a labyrinth passage between the rotor and the stator configured to expel fluid by centrifugal force. Embodiments include a shut off feature that takes advantage of axial misalignment. Some embodiments include a unitization feature that holds the rotor and stator together during assembly. The unitization feature can include chamfers on rotor and stator extensions that facilitate assembly and disassembly when sufficient force is applied.
A bearing isolator seal having a shut off O-ring is tolerant of axial rotor-stator misalignment and provides an enhanced static seal while minimizing rotational wear. A tapered section of the stator is overlapped by the shut off O-ring. When the rotor is static there is no axial misalignment, and the shut off O-ring is pressed against the tapered section, forming an enhanced seal. During rotor rotation, increased axial misalignment moves the O-ring away from the tapered section, reducing rotational wear. The stator can extend horizontally beyond the tapered section and below the O-ring, so that if the rotor moves beyond a maximum misalignment, there is a "line on line" fit between the stator and rotor. The bearing isolator seal can include labyrinth technology, and the tapered section can include a contour that allows the shutoff O-ring to drag along the surface of the tapered section with no hang-ups or binding.
An apparatus for raising and lowering a cutting tool within a decoking drum, a decoking system and a method of raising and lowering a decoking system cutting tool. Instead of using metallic ropes, chains, or a self-propelled gear-based approach, non-metallic belts are secured at respective ends to a crosshead and one or more counterweights to enable vertical movement of the crosshead that in turn permits vertical movement of the cutting tool throughout the height of the drum. A motorized pulley system controls the movement of the belt, and preferably avoids having the motor be carried by the crosshead. The belts on each pulley are preferably arranged as cooperative sets so that within each set, both primary load belts and secondary load belts are present. Enhanced engagement between at least the primary load belts and the pulleys promotes greater load-bearing capability, while the secondary load belts are sufficiently strong to ensure positional stability of the crosshead and decoking tool upon damage to or failure of one or more of the primary load belts.
Valve systems include at least one component comprising a conductive material and at least one inductance-to-digital converter (LDC) sensor configured to wirelessly sense at least one property of the conductive material and relay a value associated with the at least one property to a control system of the valve system. Methods of sensing a position of a component of a valve system include wirelessly sensing at least one property of a conductive material of the component of the valve system with at least one inductance to-digital converter (LDC) sensor.
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
G01D 5/12 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means
89.
SENSORS FOR VALVE SYSTEMS, VALVE SYSTEMS INCLUDING SENSORS AND RELATED METHODS
Valve systems include at least one component comprising a conductive material and at least one inductance-to-digital converter (LDC) configured to wirelessly sense a position of at least a portion of the conductive material. The valve system is configured to determine at least one force applied to a portion of the valve system based at least partially on the position of the at least a portion of the conductive material. Methods of determining a force associated with a valve system include wirelessly sensing a position of at least a portion of the conductive material with the at least one inductance-to-digital converter (LDC) sensor and determining a force applied to a portion of the valve system based at least partially on the position of the at least a portion of the conductive material.
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 31/53 - Mechanical actuating means with toothed gearing
An assembly made up of a pump, a container and an augmented fluid-recirculating system for increased working fluid agitation, and a method of agitating a liquid within a container—as well as dispensing such a liquid from the container—where the liquid has been subjected to such augmented agitation prior to such dispensing. The pump cooperates with the fluid-recirculating system that includes an eductor such that the liquid resident within the container may be recirculated in a manner to promote its own agitation. In addition, air or a related fluid may be passively introduced upstream of the pump such that it also may pass through the eductor. In one form, the assembly defines a closed-loop system such that the air or other gas already present in the container may be introduced selectively, while in another form, the assembly defines an open-loop system that retrieves air from a local external environment. In either case, the introduction of such air or related gas may be selective, thereby permitting an operator to dictate if such air should be recirculated. In addition, the use of a diaphragm pump helps avoid damage to the portions of the pump that are exposed to a mixed phase fluid flow made up of the air and recirculated liquid.
An assembly made up of a pump (300), a container and an augmented fluid-recirculating system (400) for increased working fluid agitation, and a method of agitating and dispensing such a liquid. The pump (300) cooperates with the fluid-recirculating system (400) that includes an eductor (450) such that the liquid resident within the container may be recirculated. In addition, air or a related fluid may be passively introduced such that it also may pass through the eductor (450). In one form, the assembly defines a closed-loop system, while in another form the assembly defines an open-loop system. In either case, the introduction of such air or related gas may be selectively controlled by a valve. In addition, the use of a diaphragm pump helps avoid damage to the portions of the pump that are exposed to a mixed phase fluid flow made up of the air and recirculated liquid.
A valve assembly for a diaphragm pump reduces leakage while providing good flow-through by including shaping of the seat and/or the valve that increases the elastic tension between the valve and seat in outer regions of the valve assembly, thereby providing a more optimal tension over the entire valve. In embodiments, outer regions of the seat are more steeply sloped upward than inner regions while the valve is substantially uniform in slope. In other embodiments, valve outer regions are less steeply sloped upward, or more steeply sloped downward, than its inner regions, and the seat is substantially uniform in slope. A vertical cross section of the seat and/or valve can include continuous curvature and/or discrete changes in linear slope. In some embodiments, two linear slopes are included in the vertical cross section of the seat or valve. The pump can be a multi-chamber pump.
F04B 43/02 - Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
F04B 45/04 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
F04B 49/22 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by means of valves
F16K 15/14 - Check valves with flexible valve members
A mechanical expelling mechanism for an axial pump system in a loop reactor includes straight or curved repelling vanes mounted to a vertical or tapered rear face of the impellor hub and a tapered wall provided in the adjacent seal housing. In combination, these elements exclude and eject process slurry, especially polymer solids, away from the seals and bearings, and thereby prevent damage to the seals and bearings, at least until a flow of flushing fluid can be restored. The repelling vanes further serve to circulate and exchange any process fluid and catalyst that remains in the space between the impellor and the seals, so that localized warming and run-away formation of polymer solids near the seals is avoided. The repelling vanes can be curved or straight. In embodiments, the repelling vanes reduce pump efficiency by less than 1%.
Valve seats include a flexible arm portion configured to seal against a portion of a valve body of a valve. A ball valve may include such valve seats. Methods of forming a seal in a ball valve include forcing a first metal valve seat into sealing contact with a first end cap and a ball valve member with a first metal flexible arm member and forcing a second metal valve seat into sealing contact with a second end cap and the ball valve member with a second metal flexible arm member.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
F16K 5/08 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary Details
F16J 15/16 - Sealings between relatively-moving surfaces
95.
SYSTEM FOR EXCLUDING PROCESS FLUID AND SOLIDS FROM SEALS AND BEARINGS OF AN AXIAL PUMP IN A LOOP REACTOR
A mechanical expelling mechanism for an axial pump system in a loop reactor includes straight or curved repelling vanes mounted to a vertical or tapered rear face of the impellor hub and a tapered wall provided in the adjacent seal housing. In combination, these elements exclude and eject process slurry, especially polymer solids, away from the seals and bearings, and thereby prevent damage to the seals and bearings, at least until a flow of flushing fluid can be restored. The repelling vanes further serve to circulate and exchange any process fluid and catalyst that remains in the space between the impellor and the seals, so that localized warming and run-away formation of polymer solids near the seals is avoided. The repelling vanes can be curved or straight. In embodiments, the repelling vanes reduce pump efficiency by less than 1 %.
A device to limit pre-rotation of fluid across turbomachinery regions where significant pressure differentials exist between rotating and non-rotating components. In one form, the present invention is particularly applicable to centrifugal-based turbomachinery. Of particular concern is that the highly-energized fluid exiting an impeller or related rotating member can impart significant swirl velocity and related rotordynamic forces which in turn may impact rotor stability. The potential for such instability is particularly high when flow coming from an impeller discharge permeates a seal, bushing or related component that is used to fluidly separate the impeller from an upstage partition. The present invention replaces traditional bushing seal designs at swirl-prone regions with a vaned anti-swirl bushing that fits within the housing without increasing the axial or radial dimensions of the housing.
A bearing isolator seal (10) includes a rotor (23) and stator (24) wherein the stator (24) has inboard (26) and outboard (32) radial projections which define a groove (34) bounded by groove side faces (36, 37) and a groove bottom face (38). The rotor (23) extends radially (35) and then axially (36) so as to lie closely adjacent to the terminal end (33) of the outboard radial projection (32) on the stator (24) to define an entrance passageway (39). The bearing isolator seal (10) includes a surface geometry which is believed to result in improved exclusion of contaminants, particularly from high velocity water spray, wherein the entrance passageway (39) is angled to increase the rotational effects of exclusion during shaft (12) rotation, and wherein the groove side faces (36, 37) are also angled (38A, 38B) to assist in redirecting spray and other contaminants away from the passageway (39).
A bearing isolator seal (10) includes a rotor (23) and stator (24) wherein the stator (24) has inboard (26) and outboard (32) radial projections which define a groove (34) bounded by groove side faces (36, 37) and a groove bottom face (38). The rotor (23) extends radially (35) and then axially (36) so as to lie closely adjacent to the terminal end (33) of the outboard radial projection (32) on the stator (24) to define an entrance passageway (39). The bearing isolator seal (10) includes a surface geometry which is believed to result in improved exclusion of contaminants, particularly from high velocity water spray, wherein the entrance passageway (39) is angled to increase the rotational effects of exclusion during shaft (12) rotation, and wherein the groove side faces (36, 37) are also angled (38A, 38B) to assist in redirecting spray and other contaminants away from the passageway (39).
A bearing isolator seal includes a rotor and stator wherein the stator has inboard and outboard radial projections which define a groove bounded by groove side faces and a groove bottom face. The rotor extends radially and then axially so as to lie closely adjacent to the terminal end of the outboard radial projection on the stator to define an entrance passageway. The bearing isolator seal includes a surface geometry which is believed to result in improved exclusion of contaminants, particularly from high velocity water spray, wherein the entrance passageway is angled to increase the rotational effects of exclusion during shaft rotation, and wherein the groove side faces are also angled to assist in redirecting spray and other contaminants away from the passageway.
An improved mechanical face seal is provided which includes a pair of relatively rotatable seal rings having opposing seal faces. At least one of the seal faces and preferably the silicon carbide seal ring includes a tantalum coating over the seal face. The coating is formed such that the exposed seal face surface is formed of tantalum with a preferred thickness, and the substrate is the silicon carbide seal ring material. Between the silicon carbide substrate and exposed tantalum coating layer, an intermediate transformation layer of tantalum carbide is formed to enhance bonding of the substrate and coating layer. Preferably, the tantalum carbide layer is formed during the coating process wherein the tantalum is applied by chemical vapor deposition and the tantalum reacts with the silicon carbide to form the tantalum carbide at the interface between the tantalum coating layer and the seal ring substrate.
