Abstract

Disclosed in the present invention is a wiring mechanism for a 90-degree gas pipe fitting and an operating method therefor. The wiring mechanism comprises an X-axis jacking mechanism, an X-axis clamp, an X-axis rotating mechanism, a Y-axis jacking mechanism, a Y-axis clamp, a Y-axis rotating mechanism, a winding mechanism and a rack. The X-axis clamp is installed on the outer side of a segment of the 90-degree gas pipe fitting in an X-axis direction, and the Y-axis clamp is installed on the outer side of a segment of the 90-degree gas pipe fitting in a Y-axis direction; the X-axis jacking mechanism and the X-axis rotating mechanism are symmetrically arranged on the rack, the X-axis jacking mechanism being arranged at one end of the 90-degree gas pipe fitting in the X-axis direction, and the X-axis rotating mechanism being connected to the Y-axis clamp; the Y-axis jacking mechanism and the Y-axis rotating mechanism are symmetrically arranged on the rack, the Y-axis jacking mechanism being arranged at one end of the 90-degree gas pipe fitting in the Y-axis direction, the Y-axis rotating mechanism being connected to the X-axis clamp, and the winding mechanism being located above the 90-degree gas pipe fitting. The present invention achieves full automation of elbow pipe winding, thus effectively improving the working efficiency, and improving the workpiece quality.

IPC Classes  ?

• B21F 3/06 - Coiling wire into particular forms helically internally on a hollow form

Abstract

Disclosed in the present invention are a welding machine for water engineering PE floating balls, and an operation method therefor. The welding machine comprises a lifting mechanism, clamping devices, adjusting clamps, heating mechanisms, milling cutter mechanisms and a frame, wherein the lifting mechanism comprises an upper clamp hydraulic cylinder and a lower clamp hydraulic cylinder, which are symmetrically fixed on the upper and lower surfaces of the frame; the lower end of the upper clamp hydraulic cylinder and the upper end of the lower clamp hydraulic cylinder are each connected to a clamping device for clamping a half floating ball; the clamping device is connected to an adjusting clamp; and the heating mechanisms and the milling cutter mechanisms are separately arranged on the frame and located between an upper half floating ball and a lower half floating ball. The upper half floating ball and the lower half floating ball are respectively fixed on the clamping devices; the misalignment amount of the upper half floating ball and the lower half floating ball is adjusted by means of the adjusting clamps; and end faces of said half floating balls are milled by the milling cutter mechanisms, and are heated and bonded by means of the heating mechanisms. The present invention has a high degree of integration and automation, involves a time-saving and labor-saving welding process, and yields finished floating balls with a high degree of bonding and high quality.

IPC Classes  ?

• B29C 65/20 - Joining of preformed partsApparatus therefor by heating, with or without pressure using heated tool with direct contact, e.g. using "mirror"
• B29C 65/78 - Means for handling the parts to be joined, e.g. for making containers or hollow articles

Abstract

Disclosed in the present invention are a water circuit system with circulating hot water and a control method therefor. The water circuit system comprises a water heater, a water output device, a pipeline assembly and a circulation assembly, wherein the water heater comprises a cold water intake end and a hot water output end; the water output device is a water output faucet, which comprises a hot water inlet and a cold water inlet; and the circulation assembly comprises a booster water pump, a first temperature sensor, a check valve, a control panel, a first wireless transceiving unit and a first water flow sensor; and the water heater, the water output device and the circulation assembly are connected by means of the pipeline assembly. By means of the technical solution of the present invention, hot water output can be implemented automatically by opening the faucet in a scheduled mode according to user habits, or can be implemented in a jog mode, so that the energy consumption is greatly reduced, and the need for users to switch back and forth between the control panel and the faucet is also eliminated, thereby improving the user experience.

IPC Classes  ?

• F24D 17/00 - Domestic hot-water supply systems
• F24D 19/10 - Arrangement or mounting of control or safety devices
• F24H 1/12 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
• F24H 9/20 - Arrangement or mounting of control or safety devices

Abstract

Disclosed in the present invention are a pipe-in-pipe forming die and a method. The pipe-in-pipe forming die comprises a die body; the die body comprises a support die, opening dies, core dies, and a middle die; an opening die is arranged at the end of the support die; the middle die is arranged in the position, close to the tail end, in the opening die; the core dies are arranged inside an integrated body formed by the support die, the opening dies, and the middle die; the middle die comprises a middle die main body, the front end of the middle die main body is externally sleeved with an annular ring, and the annular ring is supported on the middle die main body by means of a set of supports; a middle die temperature control medium channel I is formed in the supports, a set of middle die temperature control medium channels II are formed in the middle die main body, and at least one middle die temperature control medium inlet and middle die temperature control medium outlet are formed at an inlet and an outlet of the middle die temperature control medium channel I. By using the technical solution of the present invention, on one hand, middle die temperature control can be achieved, and on the other hand, the problem of a pipe being pressed to be flat by external air pressure due to insufficient internal pressure in the cavity during pipe extrusion is solved.

IPC Classes  ?

• B29C 48/09 - Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
• B29C 48/325 - Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles adjustable

Abstract

A pressure-bearing PPR device specially for an explosion-proof pipe, comprising a main body (1), flow distribution channels (2), gas discharge devices (3) and pressure-bearing structures (4). The main body (1) is a 90-degree arc structure and comprises a main flow channel (13), a first socket (11) and a second socket (12); each flow distribution channel (2) is connected to the main body (1) and comprises an upper flow distribution channel (22) and a lower flow distribution channel (21) which are communicated with the main flow channel (13); the first socket (11) is connected and communicated with the lower flow distribution channel (21); the second socket (12) is connected and communicated with the upper flow distribution channel (22); the pressure-bearing structures (4) and the gas discharge devices (3) are further arranged in the direction of the flow distribution channels (2) away from the main body (1); the upper flow distribution channel (22) and the lower flow distribution channel (21) are not communicated with each other.

IPC Classes  ?

• F16L 43/00 - BendsSiphons
• F16L 55/02 - Energy absorbersNoise absorbers
• F16L 55/045 - Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer

Abstract

A multifunctional visual precise pressure control apparatus special for running water and a pressure regulating method. The apparatus comprises a main body (1), and a pressure relief main body (2), a fine regulation main body (3) and a coarse regulation main body (4) which are arranged on the main body (1). The pressure relief main body (2) and the coarse regulation main body (4) are located at the upper portion of the main body (1). The fine regulation main body (3) is located at the lower portion of the main body (1). The pressure relief main body (2) is used for relieving the instantaneous change of the pressure in a pipe. The fine regulation main body (3) is used for precisely regulating water pressure fluctuation. The coarse regulation main body (4) is used for greatly regulating the water flow pressure. The apparatus has the functions of non-return, visualization and precise pressure control, thereby solving the problems of pipe explosion, water leakage and water pipe shaking in use due to the fact that a user cannot know the water flow condition in an annular pipeline.

IPC Classes  ?

• F16K 1/02 - 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 screw-spindle
• F16K 1/32 - 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 Details
• F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
• F16K 15/03 - Check valves with guided rigid valve members with a hinged closure member
• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 17/164 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side and remaining closed after return of the normal pressure

Abstract

Disclosed in the present invention are a method and device for preparing a high-toughness PP-R plastic pipeline by means of vibration-temperature composite field annealing. The method comprises: 1) weighing raw materials according to a formula, mixing same until uniform, and then feeding same into a single-screw extruder for extrusion molding, so as to obtain an original PP-R pipe; 2) placing the original PP-R pipe in a vibration-temperature composite field closed box, wherein a vibration field source is arranged in the box body, the temperature in the box is controllable and adjustable, and the retention time of the original PP-R pipe in the vibration-temperature composite field closed box is 5-30 min; and 3) cooling the PP-R pipe that is treated with a vibration-temperature composite field, so as to obtain a PP-R pipe with low-temperature brittleness resistance. Further disclosed in the present invention are the structure of a vibration-temperature composite field device. By using a vibration and temperature composite field for treating a PP-R pipe, a fast speed is achieved, the vibration field and the temperature field are both controllable, and the method is clean and sanitary; the residual internal stress of the pipe is fully eliminated, which effectively overcomes the low-temperature brittleness of a plastic product; and the other properties of the pipe are not affected, and the cost is saved.

IPC Classes  ?

• B29C 71/02 - Thermal after-treatment
• B29C 45/72 - Heating or cooling

Abstract

A multi-cavity elbow forming mold without an ejector rod and an operating method therefor. An upper mold cavity is arranged in a stationary mold frame (2), a lower mold cavity is arranged in a movable mold frame (3), sliding blocks (5) are obliquely arranged in the lower mold cavity, an angle of inclination formed by each of the sliding blocks (5) on two sides is consistent with the angle of an elbow, a core (51) is arranged on an inner side of each sliding block, and a plurality of mold cavities are formed between the upper mold cavity, the lower mold cavity and the cores (51); a pushing plate (11) is arranged on an inner side of an upper composite plate (1); a main runner is arranged on the stationary mold frame (2), and is divided into a plurality of branch runners, which extend to the mold cavities in a direction towards the upper mold cavity; a pulling rod (6) sequentially passes through the upper composite plate (1) and the pushing plate (11) and extends to the runners; the pushing plate (11) is fixedly provided with a pulling and pushing plate screw (7), which is used for limiting the mold opening distance between the upper composite plate (1) and the stationary mold frame (2); a limiting screw (8), which is used for limiting the mold opening distance of the upper composite plate (1) and the pushing plate (11), is fixed on the upper composite plate (1); and an iron hook mechanism (9) for closing the stationary mold frame (2) and the movable mold frame (3) is also arranged on a side edge of the mold. The runners are automatically separated from a product without it being necessary to trim a gate and without an ejector needle mark, thereby ensuring the appearance quality of the product.

IPC Classes  ?

• B29C 45/26 - Moulds
• B29C 45/33 - Moulds having transversely, e.g. radially, movable mould parts
• B29C 45/38 - Cutting-off equipment for sprues or ingates
• B29C 45/40 - Removing or ejecting moulded articles

Abstract

A device and method for prefabricating a cable groove of a smart pipe. The device comprises a core pipe extrusion die (1); the core pipe extrusion die (1) is connected to a mouth core die (2); the mouth core die (2) is connected to a co-extrusion strip extrusion die (3); the co-extrusion strip extrusion die (3) is connected to an outlet die (4); the mouth core die (2), the co-extrusion strip extrusion die (3), and the outlet die (4) share a core die; outer die bodies of the core die (2), the co-extrusion strip extrusion mold (3), and the outlet die (4) have equal inner diameters; the inner wall of the outer die body of the co-extrusion strip extrusion die (3) extends into a co-extrusion strip flow channel (31) to form a protruding structure (311) having rounded corners; the core pipe extrusion die (1) extrudes a non-polar substrate; when the non-polar substrate is extruded to the position of the outlet die (4), the co-extrusion strip extrusion die (3) starts to extrude a polar substrate from the outlet die (4); after the extrusion, shaping and cooling are performed, and an co-extrusion strip is stripped off; after the stripping, a stable and uniform prefabricated notch is formed and a smart cable is directly embedded; and the stripped co-extrusion strip is recycled by means of a granulator for reuse. The device can effectively avoid damage to a pipe, can implement notches having different cross-section forms, and is low in cost.

IPC Classes  ?

• B29C 48/32 - Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
• C08L 27/06 - Homopolymers or copolymers of vinyl chloride
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• B29C 48/09 - Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
• C08L 23/28 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
• C08K 5/098 - Metal salts of carboxylic acids
• C08L 23/08 - Copolymers of ethene
• C08K 3/04 - Carbon

Abstract

An intelligent pipeline production device and a pipeline production method, relating to the technical field of intelligent pipeline production. The device comprises a shaping strip storage reel used for unwinding a shaping strip, a wrapping assembly, a cooling device, a winding assembly, and a traction machine. The traction machine pulls a pipe core to sequentially pass through the wrapping assembly, the cooling device and the winding assembly. The wrapping assembly comprises a first heating device and a wrapping mold. The winding assembly comprises a second heating device and a shaping strip recovery reel used for winding the shaping strip. According to the device of the present invention, production of a pipe provided with a parallel notch or a pipe provided with a spiral notch can be achieved; and by setting the cross-sectional shape of the shaping strip, machining of notches having different cross sections can be realized. According to the pipe produced by the device of the present invention, the notch is smooth, a cable is not prone to damage, and the cable can be directly snap-fitted and installed in the notch without additional fixation and protection, thereby greatly reducing the use of connectors, and saving costs.

IPC Classes  ?

• B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die
• B29C 70/82 - Forcing wires, nets or the like partially or completely into the surface of an article, e.g. by cutting and pressing
• B29C 48/151 - Coating hollow articles
• F16L 11/127 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting electrically conducting

Abstract

Disclosed are a hydrogen and natural gas mixed energy transmission pipeline and a preparation method therefor. The transmission pipeline sequentially comprises, from inside to outside, a hydrogen transmission layer, a first barrier layer, a first protective layer, a reinforcing layer, a second protective layer, a natural gas transport layer, a second barrier layer, and a third protective layer; support bars are provided in the natural gas transport layer; the support bars are used for maintaining the shape of a transport cavity of the natural gas transport layer; the width of the support bars is 5-7 mm; the ratio of the number of support bars to the inner diameter of a pipe of the natural gas transport layer is 1:15; the unit of the inner diameter is mm, the number of support bars is an integer; the thickness of the support bars is consistent with the thickness of the cavity of the natural gas transport layer; the support bars are helical. The pipeline of the present invention can transport hydrogen and natural gas in a mixed manner, so that transmission efficiency and simplicity are improved, the service life is long, and high-pressure transmission is met.

IPC Classes  ?

• F16L 9/19 - Multi-channel pipes or pipe assemblies
• B29D 23/00 - Producing tubular articles

Abstract

Disclosed in the present invention is a structural design and verification method for a metal withholding pipe fitting of an oil field pipe. The method comprises the following steps: 1) determining key parameters of a pipe fitting, which parameters comprise a geometric parameter, a material parameter, and an operating condition parameter of the pipe fitting; 2) determining common failure modes of a metal withholding pipe fitting, which modes comprise a shear failure between an inner core and an outer sleeve, and an intercoat adhesion failure between inner teeth and a plastic layer; and 3) respectively proposing theoretical calculation and checking numerical models according to the failure modes in step 2) and the parameters of the pipe fitting in step 1) combined with a theoretical failure equation of mechanics. For two failure modes, i.e. a shear failure between an inner core and an outer sleeve and an intercoat adhesion failure between inner teeth and a plastic layer, theoretical calculation and checking numerical models are respectively proposed in the present invention, which are highly valuable for both the development of a new pipe fitting and the safety verification of an existing pipe fitting.

IPC Classes  ?

• G06F 30/17 - Mechanical parametric or variational design

Abstract

A gas permeation detection device for a lined pipe, comprising a steel pipe (1), a lined plastic pipe (2), a welding pipe nozzle (3), a test element support (4), a buffer tank (5), high pressure ball valves (10, 11), and test elements. Flange sheets (6) are welded to two ends of the steel pipe (1) and are configured to be connected to flange blind plates (7); a steel pipe air outlet hole (8) is formed in one end of the steel pipe (1); the welding pipe nozzle (3) is of a hollow cylindrical structure and is fixedly provided at a position concentric with the steel pipe air outlet hole (8); the test element support (4) is connected to the welding pipe nozzle (3); threaded holes for mounting the test elements are formed in the surface of the test element support (4); the buffer tank (5) is of a hollow structure, and the lower portion and the upper portion of the buffer tank are respectively connected to the first high pressure ball valve (10) and the second high pressure ball valve (11) by means of connecting members (9); the first high pressure ball valve (10) is connected to the upper end portion of the test element support (4); and a flowmeter (12) is further connected to the second high pressure ball valve (11). The problem that an existing gas permeation detection device cannot evaluate the gas permeation performance of a plastic pipeline is solved.

IPC Classes  ?

• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials

Abstract

A gas permeation detection device for a penetration pipeline and an operation method therefor. The detection device comprises an outer-layer steel pipe, a penetration pipeline, a gas input device, a test element support (1), a buffer tank (2), a gas discharge device, and a test element. The gas input device is respectively communicated with the interior of the penetration pipeline and an annular region. The gas discharge device is connected to a blind plate (4), and comprises a first electric valve (5), a first flow meter (6), and a gas recovery and processing device (7) successively connected by means of pipelines. The test element support (1) is fixed on the external steel pipe and is communicated with the annular region, and a second electric valve (8), a buffer tank (2), a third electric valve (9), a second flow meter (10), and a gas recovery and processing device (7) are successively arranged on the test element support (1). The technical problems that existing gas permeation detection devices are large in application scenario limitation, few in testable gas types, small in test pressure and single in test data are solved.

IPC Classes  ?

• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials

Abstract

Disclosed in the present invention is a gradient distribution algorithm-based optimal sensor arrangement method, comprising the following steps: 1) summarizing pipeline parameters; 2) calculating in-pipeline medium parameters; 3) generating a boundary condition according to an operation condition; 4) establishing a numerical model to unifiedly solve the distribution of speed fields and pressure fields of the whole pipeline system; 5) solving the two unified equations established in steps 1)-4); 6) calculating, according to the results obtained in step 5), different pressure/speed gradient distributions corresponding to different pipeline section positions; and 7) substituting the results obtained in step 6) into a gradient distribution algorithm. In the method of the present invention, reasonable sensor arrangement under different conditions is calculated by combining a pipeline flow numerical model and a gradient distribution algorithm; the method is a convenient, and effective method in the actual implementation of an intelligent pipeline, and has important engineering significance.

IPC Classes  ?

• G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
• G06F 30/20 - Design optimisation, verification or simulation
• G06F 111/10 - Numerical modelling
• G06F 113/08 - Fluids
• G06F 119/14 - Force analysis or force optimisation, e.g. static or dynamic forces

Abstract

Disclosed in the present invention are an ultra-thin polyethylene pipeline production device and production method. The apparatus of the present application comprises a cooling spraying apparatus, a support structure, an extruder, a sizing sleeve, a plurality of roller ring assemblies, and a drawing device, wherein the external form of the support structure is divided into a half-shuttle-shaped front section and a tubular rear section, and the head of the half-shuttle-shaped front section is connected to the extruder by means of a steel rope; when a pipe is pulled backwards, an inner wall of the pipe comes in contact with an outer wall of the support structure and the support structure is driven to move backwards until the head of the support structure is taut with the steel rope connected to the extruder, the support structure is exactly located between an upper continuous belt and a lower continuous belt of the drawing device, and the support structure can provide sufficient support force for the pipe to prevent the pipe from being deformed in the drawing process; and the roller ring assemblies are configured to provide a rolling limiting effect on an outer wall of the pipe pulled backwards, thereby preventing the pipe from being deformed. According to the production device of the present invention, an SDR100 ultra-thin polyethylene pipeline can be extruded, and the whole production process is also optimized, so that deformation of the pipe during shaping, cooling and drawing processes is prevented.

IPC Classes  ?

• B29C 48/09 - Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
• B29C 48/355 - Conveyors for extruded articles
• B29C 48/87 - Cooling
• B29C 48/88 - Thermal treatment of the stream of extruded material, e.g. cooling
• B29C 48/90 - Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
• B29L 23/00 - Tubular articles

Abstract

A high-pressure connecting structure for steel wire mesh reinforced composite pipes and a manufacturing method therefor. The high-pressure connecting structure comprises a first connecting assembly arranged on an end portion of a first composite pipe (1), a second connecting assembly arranged on an end portion of a second composite pipe (10), and a bolt assembly configured to fixedly connect the first connecting assembly and the second connecting assembly, wherein steel wire layer exposed sections are respectively arranged at joints of the end portions of the first composite pipe (1) and the second composite pipe (10), and the first connecting assembly comprises a concave flange (3) arranged on the steel wire layer exposed section of the first composite pipe (1) and a Hough section (2) arranged on an outer layer of the first composite pipe (1); and the second connecting assembly comprises a convex flange (9) arranged on the steel wire layer exposed section of the second composite pipe (10) and a Hough section (2) arranged on an outer layer of the second composite pipe (10). According to the high-pressure connecting structure, the flanges are arranged on steel wire layers, and the flanges are locked by means of the Hough sections, so that compared with existing connecting manners, the connection pressure bearing capacity is greatly improved, and the connecting structure has a simple manufacturing process and is convenient to construct.

IPC Classes  ?

• F16L 23/06 - Flanged joints the flanges being connected by members tensioned in the radial plane connected by toggle-action levers
• F16L 23/18 - Flanged joints characterised by the sealing means the sealing means being rings

Abstract

A steel wire mesh reinforced composite pipe high-voltage connector, and a manufacturing method therefor. The steel wire mesh reinforced composite pipe high-voltage connector comprises a first connecting assembly disposed at an end portion of a first composite pipe, a second connecting assembly disposed at an end portion of a second composite pipe, and a lock ring fixedly connecting the first connecting assembly and the second connecting assembly; the first connecting assembly comprises a welding metal ring disposed on an exposed section of a steel wire layer of the first composite pipe, an end injection molding member wrapping the exposed section of the steel wire layer of the first composite pipe, and a first outer buckling sleeve disposed on an outer layer of the first composite pipe; the second connecting assembly comprises a welding metal ring disposed on an exposed section of a steel wire layer of the second composite pipe, an end injection molding member wrapping the exposed section of the steel wire layer of the second composite pipe, and a second outer buckling sleeve disposed on an outer layer of the second composite pipe. In the high-pressure connector, the welding metal rings are disposed and welded to a steel wire reinforcing layer, and meanwhile, end injection molding is performed on the positions where the welding metal rings are located. Compared with existing connection modes, the pressure bearing capacity of connection is greatly improved.

IPC Classes  ?

• F16L 19/02 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
• B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
• B29B 11/00 - Making preforms

Abstract

Disclosed in the present invention is a method for calculating the diameter reduction amount of a fluorosilicone-modified PERT barrier liner pipe by using a finite element algorithm. The fluorosilicone-modified PERT barrier liner pipe comprises a protective outer layer, a second hot-melt adhesive layer, a barrier layer, a first hot-melt adhesive layer and a functional inner layer. The method comprises the following steps: determining, by means of testing, necessary parameters which correspond to each layer and to the whole liner pipe; obtaining, by means of calculation, the minimum critical external pressure of the whole liner pipe; performing modeling in finite element software, applying the minimum critical external pressure, and obtaining, by means of calculation, a lower limit for the diameter reduction amount of the whole liner pipe; obtaining, by means of calculation, a critical buckling external pressure of the whole liner pipe; performing modeling in the finite element software, applying the critical buckling external pressure, and obtaining, by means of calculation, an upper limit for the overall diameter reduction amount; and taking a value from the range interval of the upper limit and the lower limit, and using same as the diameter reduction amount of a fluorosilicone-modified PERT barrier liner pipe. The present invention provides a theoretical calculation method for the diameter reduction amount of a fluorosilicone-modified PERT barrier liner pipe; and during an actual operation process, experiments are decreased and errors are reduced, thereby improving the efficiency.

IPC Classes  ?

• G06F 30/17 - Mechanical parametric or variational design
• G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
• G06F 113/14 - Pipes

Abstract

A paraffin-deposition-preventing intelligent pipeline system for an oil field, the system comprising a pipe fitting (1), wherein the pipe fitting (1) comprises a connecting pipe (101), and core pipes (102) arranged on two sides of the connecting pipe (101); a pressure sensor (5) and a temperature sensor (6) are provided on the connecting pipe (101); outer sides of the two core pipes (102) are each provided with an outer sleeve (2) in a sleeved manner; the pipe fitting (1) and the outer sleeves (2) are assembled to form a mounting assembly; two sides of the mounting assembly are each provided with a pipe; and the two pipes are in communication with each other by means of the mounting assembly to form a communication pipeline. The state in the communication pipeline can be monitored in real time by means of the provided sensors, so as to control a metal wire and heating layers of the pipes to perform heating, so that the temperature in the pipeline rises to melt paraffin attached to the pipeline. The stability of heat transfer between the pipes is ensured by means of provided copper inserts. Convenient and quick mounting is achieved by means of fastening and pressing the core pipes, the outer sleeves and the pipes. The service life and usage efficiency of the pipes can be effectively prolonged and improved by means of a multilayer design of the pipes.

IPC Classes  ?

• F16L 41/02 - Branch units, e.g. made in one piece, welded, riveted
• F16L 53/38 - Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
• F16L 9/147 - Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
• F16L 13/16 - Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars

Abstract

Disclosed in the present invention are a non-destructive lining device and method for a lining core pipe in a lining process. The lining device comprises a device frame, a multi-level diameter reduction module, a traction apparatus, a fixing apparatus, a guide wheel set, and a protective cover. Central lines of a lined pipe, the multi-level diameter reduction module, and a steel pipe are located on a same straight line. Both ends of the lined pipe are connected to traction heads arranged on one end of the device frame. The steel pipe is fixed on the fixing apparatus arranged on the other end of the device frame. A winch provides a tractive force to drive the lined pipe to complete the lining operation on the steel pipe. The traction heads are connected to the head and the tail of the lined pipe in the whole diameter reduction and lining processes for providing a continuous and stable axial stress to the lined pipe, and it is ensured that after the diameter reduction of the lining core pipe is completed, the lining core pipe maintains a diameter reduction state and is prevented from rebounding. At this time, the outer diameter of the lining core pipe is less than the inner diameter of the steel pipe, so that the lining core pipe can be extremely smoothly lined into the steel pipe without obvious friction, and the failure of a composite pipe caused by the abrasion of the outer surface of the lining core pipe can be effectively avoided.

IPC Classes  ?

• B29C 63/34 - Lining or sheathing of internal surfaces using tubular layer or sheathings
• B29L 23/00 - Tubular articles

Abstract

Disclosed in the present invention is a high-precision automatic flanging apparatus, comprising: a pipe clamping mechanism, which is used for clamping and fixing a flanged pipe; a die rotating mechanism, which is used for rotating and switching different dies so as to perform heating, flanging and trimming operations on a pipe; and a control driving mechanism, which is used for controlling the feeding action of the dies and realizing the back-and-forth sliding of the dies. In the high-precision automatic flanging apparatus provided in the patent, heating, flanging and trimming are integrated into one apparatus, and automatic operation is achieved, such that not only can the flanging quality be guaranteed, but the flanging efficiency can also be greatly improved. The high-precision automatic flanging apparatus has the advantages of being convenient and rapid to operate, high in automation degree, accurate in product quality control, high in flanging precision and suitable for batch production, thereby solving the problem which cannot be solved by existing flanging machines on the market.

IPC Classes  ?

• B29C 57/00 - Shaping of tube ends, e.g. flanging, belling or closingApparatus therefor
• B29D 23/00 - Producing tubular articles
• B21D 19/00 - Flanging or other edge treatment, e.g. of tubes

Abstract

A high-temperature pipeline blasting test apparatus, comprising a blasting test machine, a blasting water tank, and an operation panel. The blasting test machine comprises a machine body and a high-pressure water pipe, wherein the high-pressure water pipe is connected to a test pipe (15) to provide blasting pressure; the blasting water tank comprises a reinforced tank body, a hydraulic switch device, a water body circulation heating device, an elastic base device and accessories thereof, and a monitoring device, and is used for bearing the test pipe (15) and providing multiple functions that comprise temperature control, blasting monitoring, and protection; and the operation panel is used for performing remote operation control on the apparatus. The high-temperature pipeline blasting test apparatus has the advantages of being safe and efficient, and can provide a stable and adjustable high-temperature environment, thereby achieving a blasting test for the pipe (15) under a high-temperature condition.

IPC Classes  ?

• G01N 3/18 - Performing tests at high or low temperatures
• G01N 3/12 - Pressure-testing
• G01N 3/02 - Investigating strength properties of solid materials by application of mechanical stress Details
• G01N 3/06 - Special adaptations of indicating or recording means

Abstract

A pipe pressure resistance testing device and a testing method thereof. The pipe pressure resistance testing device comprises a device underframe (1), a cylinder body (8), a pipe (15) to be tested and a pipe deformation online measurement device; the cylinder body (8) is provided above the device underframe (1), and a roller (14) is provided on the position at the inner bottom surface of the cylinder body (8) close to a sealing end thereof; a flange inner supporting sleeve (5) is fixedly provided at an opening end of the cylinder body (8), said pipe (15) has one end provided on the roller (14) and the other end provided on the flange inner supporting sleeve (5), and said pipe (15) has one end provided with a plug (13) and the other end provided with a locking sleeve (4); the locking sleeve (4) is communicated with the pipe deformation online measurement device by means of a first guide pipe (3), and is used for external pressure resistance test and measurement of a pipe; both ends of said pipe (15) are sealed and blocked, and a U-shaped pipe (2) is provided, so that a flattening condition of said pipe (15) is accurately reflected by observing the increase and decrease of the liquid level in the U-shaped pipe (2); meanwhile, a camera (9) and a display (19) are further provided, so that the deformation of the pipe can be observed in real time. The device not only can determine the deformation of said pipe (15), but also can quantitatively test the amount of deformation of the pipe.

IPC Classes  ?

• G01N 3/12 - Pressure-testing

Abstract

A nondestructive variable-temperature testing apparatus for the mechanical properties of materials. The nondestructive variable-temperature testing apparatus comprises an external information and processing system and an integrated closed detection device, wherein the external information and processing system comprises: an oscilloscope (1) for displaying ultrasonic echo images; a pulse signal transceiver (2) for generating electrical pulse signals; and an ultrasonic transducer (11), which is a probe for transmitting ultrasonic waves and receiving echoes, and which computes the speed of transverse waves and longitudinal waves by selecting a waveform having a constant and stable period according to an echo image displayed by the oscilloscope (11); and the integrated closed detection device comprises: a housing portion for fixing the entire testing apparatus and providing a thermal insulation function; a platform portion for placing a test sample for testing and rotating the test sample; and a transmission portion for driving the platform portion. Further provided is a nondestructive variable-temperature testing method for the mechanical properties of materials. The method has the characteristics of causing no damage to a tested material, an adjustable temperature, a variable test sample position, and the ability to test the three-dimensional mechanical properties thereof.

IPC Classes  ?

• G01N 29/07 - Analysing solids by measuring propagation velocity or propagation time of acoustic waves
• G01N 29/06 - Visualisation of the interior, e.g. acoustic microscopy
• G01N 29/44 - Processing the detected response signal
• G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details

Abstract

The present invention belongs to the technical field of composite pipe compounding, and discloses a device and method for compounding a reinforced composite pipe of a completely bonded type. The device comprises a plasma generation device and air heating devices, wherein the air heating devices are arranged on two side edges of the plasma generation device. After the device is mounted, hot air injection nozzles of the air heating devices on the two sides face a pipe needing to be compounded and a reinforced strip to be compounded to the pipe, and a plasma injection nozzle of the plasma generation device faces a position between the pipe needing to be compounded and the reinforced strip, so that a plasma treatment can be carried out after heating. In the present invention, by means of a plasma treatment, the compounding temperature is lowered, the compounding performance and compounding efficiency of the reinforced pipe of the completely bonded type are improved, and time required for machining operations is saved.

IPC Classes  ?

• B29C 63/10 - Lining or sheathing, i.e. applying preformed layers or sheathings of plasticsApparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding helically around tubular articles
• F16L 9/16 - Rigid pipes wound from sheets or strips, with or without reinforcement

Abstract

A scale and paraffin removal device and method for an oil field pipe. The device comprises a drill bit (1); a heating device (2) is provided in the drill bit (1); the drill bit (1) is flexibly connected to an electric device; the electric device is flexibly connected to an ultrasonic transmitting device (8); the ultrasonic transmitting device (8) is connected to a rigid coil pipe (10); the rigid coil pipe (10) is wound on a winding reel (11); the electric device is controlled by a power source (15); an ultrasonic generating device (16) controls the ultrasonic transmitting device (8); the electric device comprises a motor (3) and a motor protective sleeve (5) provided outside the motor (3); one end of the motor protective sleeve (5) is provided with a flexible connection sealing device (4), and the other end of the motor protective sleeve (5) is provided with a flexible connection device (6); the flexible connection device (6) is used for connecting a connection rod (7) and the motor protective sleeve (5); the connection rod (7) passes through the ultrasonic transmitting device (8) and is then connected to the rigid coil pipe (10) by means of a connector (9); the ultrasonic transmitting device (8) is fixed on the connection rod (7).

IPC Classes  ?

• B08B 9/047 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices having motors for powering cleaning tools
• B08B 7/00 - Cleaning by methods not provided for in a single other subclass or a single group in this subclass
• B08B 3/12 - Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations

Abstract

A non-metal composite pipe flaring device, relating to the technical field of plastic pipe manufacturing devices. The non-metal composite pipe flaring device comprises a device chassis (8); a clamping mechanism used for clamping a composite pipe, a driving structure, and a flaring structure are arranged at the upper portion of the device chassis (8); the clamping mechanism is arranged corresponding to the flaring structure; and the driving structure drives the flaring structure to perform a flaring operation on the composite pipe (1) mounted on the clamping mechanism. Flaring dies (9) are driven by means of arc-shaped grooves (1201) on a large gear (12) to move in the radial direction, and a servo motor (18) is used to drive the large gear (12), and therefore, the forward rotation and backward rotation of the large gear (12) are controlled, i.e., the inward shrinkage and flaring of the flaring dies (9) are automatically adjusted. In the flaring mode, the flaring of the pipe is achieved by means of the radial outward flaring of eight flaring dies (9), and therefore, the present invention avoids that the pipe is damaged due to the fact that an inner layer is extruded when the composite pipe (1) is flared in an existing flaring mode.

IPC Classes  ?

• B29C 57/04 - Belling or enlarging, e.g. combined with forming a groove using mechanical means
• B29C 57/02 - Belling or enlarging, e.g. combined with forming a groove
• B21D 39/08 - Tube expanders

Abstract

A multi-functional polyethylene composite pipe for liquid food delivery and a manufacturing method. The multi-functional polyethylene composite pipe for liquid food delivery comprises a liner layer (1), a reinforcing layer, and a coating layer (2); the liner layer (1) is made of 0.5%-10% of fluorosilicone masterbatch-modified ultra-high molecular weight polyethylene having a molecular weight of 2.5 million, the reinforcing layer comprises a steel wire mesh (3) formed by being wound, and the coating layer (2) is a 50%-80% of polyvinylidene fluoride and ABS resin blended material.

IPC Classes  ?

• F16L 9/147 - Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
• B29D 23/00 - Producing tubular articles

Abstract

Disclosed a manufacturing method for a high-rigidity PE pipeline, comprising the following steps: 1) a raw material is plasticized and extruded by means of an extruder to form a pipe blank; 2) the pipe blank enters a vacuum sizing box by means of a sizing sleeve; 3) cooling water is sprayed to cool the pipe blank in the vacuum sizing box; 4) the pipe blank is taken out of the vacuum sizing box to form a pipe; 5) the pipe enters a heat treatment apparatus (1), and the outer surface layer of the pipe is heated by means of the heat treatment apparatus (1); 6) the pipe enters a heat insulation apparatus (2) and is slowly cooled to be 60°C or below by means of the heat insulation apparatus (2); 7) the pipe enters a spraying box and is cooled by means of the spraying box; and 8) traction cutting is performed. By means of a fractional crystallization method, the crystallinity of the inner wall layer of the PE pipeline is first improved, and then the outer surface layer of the pipeline is recrystallized, thereby eliminating residual stress, and improving the rigidity of the PE pipeline.

IPC Classes  ?

• B29C 48/09 - Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
• B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
• B29L 23/00 - Tubular articles
• B29C 71/02 - Thermal after-treatment

Abstract

The present invention provides a double-layer hollow pipe mold, comprising an inlet mold. One end of the inlet mold is fixedly connected to a flow dividing device, and a first core mold is mounted on the face, deviating from the inlet mold, of the flow dividing device; a first middle mold is sleeved on the first core mold, and a first outer mold used for pressing and holding the first middle mold is sleeved on the first middle mold; a second core mold is mounted at the end, away from the flow dividing device, of the first core mold; a second middle mold matching the first middle mold is sleeved on the second core mold; and a second outer mold used for pressing and holding the second middle mold is sleeved on the second middle mold. Compared with the prior art, the present invention has the following beneficial effect: a double-layer hollow pipe made of double materials can be conveniently machined.

IPC Classes  ?

• B29C 48/335 - Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
• B29C 48/325 - Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles adjustable
• B29C 48/09 - Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
• B29L 23/00 - Tubular articles