Pipeline isolation tool for sealing extrusion gaps of up to about 20% or greater includes a pair of fenced barriers (60, 160) having overlapping segments (68/70, 168/170) for restraining a seal (40). The segments expand to a pipe wall before the seal to prevent transition of seal medium over the segments and form a support wall for the seal. The support wall may include a protection ring (200). Springs (80, 180) surround each fenced barrier for returning the support system to a relaxed position. Inner rings (90. 190) are provided on sealing element facing surfaces (64, 164) of the fenced barrier for supporting the segments. The inner rings define a smooth inner guiding surface (92, 192) for the seal. The guiding surface is tilted inwardly towards the seal for resisting the sealing element during expansion and for preventing an inside diameter of the seal from expanding outwardly when compressed.
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
F16L 55/132 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
2.
PIPELINE ISOLATION TOOL WITH SEAL HAVING ADAPTABLE MECHANICAL SUPPORT STRUCTURE
Pipeline isolation tool for sealing extrusion gaps of up to about 20% or greater includes a pair of fenced barriers (60, 160) having overlapping segments (68/70, 168/170) for restraining a seal (40). The segments expand to a pipe wall before the seal to prevent transition of seal medium over the segments and form a support wall for the seal. The support wall may include a protection ring (200). Springs (80, 180) surround each fenced barrier for returning the support system to a relaxed position. Inner rings (90. 190) are provided on sealing element facing surfaces (64, 164) of the fenced barrier for supporting the segments. The inner rings define a smooth inner guiding surface (92, 192) for the seal. The guiding surface is tilted inwardly towards the seal for resisting the sealing element during expansion and for preventing an inside diameter of the seal from expanding outwardly when compressed.
F16L 55/132 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
3.
SYSTEM AND DEVICE FOR MONITORING A MOVABLE PLUG ELEMENT(S) IN A PIPELINE
A friction pig 2 and system for monitoring one or more physical properties upstream and/or downstream of the friction pig 2 when in use in a pipe 1, comprises at least one sensor 7 connected to the friction pig 2 for sensing and acquiring data related to one or more physical properties concerning the friction pig 2 or fluid upstream and/or downstream of the friction pig 2; means for receiving instructions from a remote control unit 12; means for carrying out said instructions; and means for transmitting said acquired data to said remote control unit 12, thus enabling monitoring of one or more physical properties. 8. Friction pigs preferably comprise friction plugs, for example high-friction plugs for use in pipeline isolation. The invention is also described by a system comprising at least two friction pigs 2, 4 for measuring monitoring one or more physical properties when used in a pipe.
A clamp assembly for a tubular element, comprising multiple modular clamping elements (1, 2) configured for connection around the tubular element and, when in use, together enveloping an outer circumferential surface of a portion of the tubular element. The clamping elements (1, 2) are releasably interconnected by tightening bolts (6). Each clamping element (1, 2) comprises a respective plurality of support elements (12, 22) connected to respective housing sections (10, 20), where each housing section (10, 20) is configured for connection around a circumferential segment of the tubular element and, when in use, together enveloping an outer circumferential surface of a portion of the tubular element. The support elements (12, 22) within each clamping element (1, 2) are juxtaposed to each other in a tubular element longitudinal direction.
F16L 25/00 - Construction or details of pipe joints not provided for in, or of interest apart from, groups
F16L 55/172 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
A clamp (10) for assembly on the outside of a pipe (4), having a first end section (11a) and a second end section (11b) interconnected by a plurality of arcuated clamp sections (12) connected in an end-to-end relationship so that the clamp (10) is flexible in its own plane but substantially inflexible transversely of this plane, said end sections (11a,b) comprising clamp fastening means (15, 17) and clamp tensioning means (16), for fastening the clamp (10) on the pipe. Each clamp section (12) may comprise a plurality of clamp elements (7) arranged in a side-by-side relationship, substantially transversely of said plane.
F16L 3/10 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing
F16L 57/02 - Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
The present invention regards a plug (2) for scaling off a pipeline (1), comprising a main body (3), scaling means (6) and gripping means (5) arranged circumferentially around the main body (3) and actuation means (4) for operating the sealing and gripping means (5,6) where the gripping means (5) comprise at least one slip (10) with an outer surface (11) for contact against the pipe wall and an inner gliding surface (12) arranged in abutment against a first angled guiding surface (21), forming an angle ? with a center axis of the plug (2), so that the gripping means (5) when actuated is moved relative to the guiding surface (21) to move the slips (10) in a radial direction where the guiding surface (21) in addition is moved in a radial direction relative to the center axis of the plug (2).
The present invention relates to an arrangement for use with a plug (1) for sealing against an inner wall of a pipeline (30), comprising a main body and sealing means, which sealing means comprises an annular packer element (7), arranged between two relative movable body elements (5,6) of the main body actuated by actuation means, where the movable elements form surfaces (500,600) in abutment against the packer element (7). The packer element (7) comprises a radially inner section (705) which is mainly incompressible in a direction transverse to a circumferential direction and where sections of the two surfaces (500,600) in abutment against the inner section (705) of the packer element (7) in a retracted position, forms different angles in relation to an axis in radial direction in relation to a longitudinal axis of the plug.
The invention regards a device for movement within a pipeline which device comprises at least one centralizing means (20) comprising at least two centralizing elements (21) arranged around the circumference of a body (8) of the device. The centralizing elements (21) are arranged to move from a retracted position to an extended position in contact with an inner wall (2) of a pipeline (1) to centralize the device.
The present invention regards a device for movement within a pipeline (2), as for instance a plug, comprising a main body and gripping means (3) comprising at least two gripping segments arranged movable between a retracted position out of contact with an inner wall (21) of a pipeline (2) and an extended position in contact with an inner wall (21) of a pipeline (2). According to the invention the device comprises at least two protection means (5) arranged extending in a radial direction from a main outer diameter (110) of the main body and arranged around a circumference of the main body, where a distal end (51) of the protection means (5) is extending outside the grip segments (14) in an retracted state of the grip segments (14) but is within an outer diameter (143) of the grip segments (14) in an extended state of the grip segments (14).
Arrangement for use with a plug (1) for sealing against an inner wall of a pipeline (30), comprising a main body, sealing means and actuation means for moving the sealing means from a retracted to an extended state in contact with the inner wall of the pipeline, which sealing means comprises an annular packer element (7), arranged between two relative movable body elements (5, 6) of the main body actuated by the actuation means, The packer element (7) comprises means (720, 722, 724, 730) in an outer peripheral surface formed by a first side (701) of the packer element (7), which means comprises at least one peripheral rib (724) radially protruding from the first side (701) of the packer element (7).
F16L 55/132 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
F16J 15/02 - Sealings between relatively-stationary surfaces
The present invention regards a barrier plug system (3) for sealing off a pipe (1), comprising a plug body, a first and a second end plate surface (11, 31) arranged on opposite sides of the plug body and at least one circumferential sealing means (6) and means (8) for setting the plug system (3). The plug body comprises at least two separate plug body elements (10, 30) movable relative each other and the at least one sealing means (6) is arranged abutting two opposite annular pressing surfaces (12, 32) formed by the plug body, which are moved towards each other during setting of the plug system (3). The pressing surfaces (12, 32) are limited in the movement against each other by stop means and pre-tensioned to move toward each other by at least one tensioning device (7).
The present invention regards a clamp device for arrangement in connection with a pipe (1), comprising an outer clamp structure (10) for arrangement around a pipe (1) at least one pressure piston (12) and at least one packer element (13, 17) arranged between the pressure piston (12) and the outer clamp structure (10) or another pressure piston (12), arranged movable relative the outer clamp structure (10). Where the pressure piston (12) comprises a high pressure surface (20) exposed to a fluid at a higher pressure around the clamp device and at least one packer pressure surface (26, 27) in abutments against the packer element (13, 17) where the high pressure surface (20) has a larger area than the packer pressure surfaces (26, 27).
F16L 55/172 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
The present invention relates to an arrangement for use with a plug (1) for sealing against an inner wall of a pipeline (30), comprising a main body and sealing means, which sealing means comprises an annular packer element (7), arranged between two relative movable body elements (5,6) of the main body actuated by actuation means, where the movable elements form surfaces (500,600) in abutment against the packer element (7). The packer element (7) comprises a radially inner section (705) which is mainly incompressible in a direction transverse to a circumferential direction and where sections of the two surfaces (500,600) in abutment against the inner section (705) of the packer element (7) in a retracted position, forms different angles in relation to an axis in radial direction in relation to a longitudinal axis of the plug.
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
F16L 55/136 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially expanding or deforming a split ring, hooks or the like
14.
GRIPPING MEANS FOR USE WITH A UNIT INSERTABLE IN A PIPELINE
The present invention related to gripping means for use with a unit (2) to be inserted into and held relative a pipeline (1), where the gripping means (3) comprises at least to gripping elements (300) arranged around the circumference of the main body (10) and formed with an outer surface (301) for contact with the internal wall of a pipeline. The outer surface of one gripping element in at least a part has a form giving two separate contact sections between the gripping element and an internal wall of a pipeline seen in a circumferential direction in an extended state of the gripping element.
F16L 55/136 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially expanding or deforming a split ring, hooks or the like
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
F16L 55/132 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
E21B 19/06 - Elevators, i.e. rod- or tube-gripping devices
The invention regards a device for movement within a pipeline which device comprises at least one centralizing means (20) comprising at least two centralizing elements (21) arranged around the circumference of a body (8) of the device. The centralizing elements (21) are arranged to move from a retracted position to an extended position in contact with an inner wall (2) of a pipeline (1) to centralize the device.
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
F16L 55/136 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially expanding or deforming a split ring, hooks or the like
The present invention regards a barrier plug system (3) for sealing off a pipe (1), comprising a plug body, a first and a second end plate surface (11, 31) arranged on opposite sides of the plug body and at least one circumferential sealing means (6) and means (8) for setting the plug system (3). The plug body comprises at least two separate plug body elements (10, 30) movable relative each other and the at least one sealing means (6) is arranged abutting two opposite annular pressing surfaces (12, 32) formed by the plug body, which are moved towards each other during setting of the plug system (3). The pressing surfaces (12, 32) are limited in the movement against each other by stop means and pre-tensioned to move toward each other by at least one tensioning device (7).
F16L 55/132 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
The present invention regards a protection device for elements operated by pressure in an external fluid, for instance valve devices, transmitters, fluid cylinders etc. A control fluid connection (12, 13) connects the external fluid source and the elements, wherein there in the control fluid connection is positioned a barrier system (10) , comprising a movable barrier (11) and an . internal fluid within the fluid connection between the movable barrier and the element, transferring the pressure in the external fluid but preventing the external fluid from contact with the element.
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
The present invention regards a control system and method for operation of a plug (2) or devices within a plug within a pipeline (1) which system comprises at least one device and means for actuation of the device, wherein the means for actuation of the device is responding to a repetitive fluctuation in the pressure of a external fluid around the plug.
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
F16L 55/136 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially expanding or deforming a split ring, hooks or the like
The present invention regards a method and device for operation of a control system for a plug or elements within a plug, within a pipeline (1), when means for actuation of a device of the control system, are reading the pressure in the external fluid around the plug, at the high pressure side of the plug, and at a given pressure activates the device.
F16L 55/10 - Means for stopping flow in pipes or hoses
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
A coupling according to the invention comprises a first part (1) and a second part (2). The first part (1) comprises a housing (5) with a bore (6) and a slide element (7) arranged movable within the bore (6) and the slide element (7) has two ends (10,11), which both end surfaces (10,11) in a disconnected state of the coupling, are exposed to a surrounding fluid around the coupling.
F16L 37/46 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of two pipe-end fittings with a gate valve or sliding valve
The present invention comprises an activating system (1) for a plug or a device connected to a plug, where the plug comprises sealing and gripping means and is adapted for placement inside a pipe, comprising a tripping device (10) within or in connection with the plug and an external power source adapted for placement outside the pipe, where the tripping device and the external power source (20) comprise internal and external means for wireless energy transmission, and where the tripping device comprises means adapted to receive and store energy from the external energy source for charging the tripping device.
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
F16L 55/32 - Constructional aspects of the propulsion means, e.g. towed by cables being self-contained
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
The present invention relates to methods and devices for positioning a plug train at a desired position within a pipeline with at least some gas in the fluid in the pipeline. Method Cor stopping a plug train (2) within a pipeline (1) : pigging the plug train by pressurizing the fluid, activating of a braking device when means (4) for deciding the position of the plug train indicate a given location, activating of gripping means to grip the inner wall of the pipeline.
F16L 55/48 - Indicating the position of the pig or mole in the pipe or conduit
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
The present invention regards a plug (2) for sealing off a pipeline (1), comprising a main body (3), sealing means (6) and gripping means (5) arranged circumferentially around the main body (3) and actuation means (4) for operating the sealing and gripping means (5,6) where the gripping means (5) comprise at least one slip (10) with an outer surface (11) for contact against the pipe wall and an inner gliding surface (12) arranged in abutment against a first angled guiding surface (21), forming an angle with a centre axis of the plug (2), so that the gripping means (5) when actuated is moved relative to the guiding surface (21) to move the slips (10) in a radial direction where the guiding surface (21) in addition is moved in a radial direction relative to the centre axis of the plug (2).
F16L 55/128 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
patents
