CN110541996B - Sealing device of sea pipe leaking stoppage pipe clamp and sea pipe leaking stoppage equipment - Google Patents
Sealing device of sea pipe leaking stoppage pipe clamp and sea pipe leaking stoppage equipment Download PDFInfo
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- CN110541996B CN110541996B CN201910798601.4A CN201910798601A CN110541996B CN 110541996 B CN110541996 B CN 110541996B CN 201910798601 A CN201910798601 A CN 201910798601A CN 110541996 B CN110541996 B CN 110541996B
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- sealing
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- plugging
- sea
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/26—Repairing or joining pipes on or under water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—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
Abstract
The invention discloses a sealing device of a sea pipe plugging pipe clamp and sea pipe plugging equipment, wherein the sealing device comprises two groups of axial sealing assemblies which are arranged on two opposite sides of a plugging area of the sea pipe plugging pipe clamp and axially extend, two groups of radial sealing assemblies which are respectively arranged on two opposite ends of the plugging area, two pistons and a driving mechanism for connecting the two pistons; the radial sealing assembly is positioned between the end part of the plugging area and the piston; the driving mechanism drives the two pistons to move in opposite directions to extrude the radial sealing assembly, and drives the radial sealing assembly to tightly hold and seal on the sea pipe. The sealing device has the advantages of high automation degree, simple operation, safety and reliability; the installation and maintenance process can be operated by a diver and also can be operated by an ROV, so that the device can be used for the sea pipe leakage stoppage pipe clamp in the shallow water area within 300 meters and can also be used for the sea pipe leakage stoppage pipe clamp in the deep water with the water depth of more than 300 meters, and the problem that the sea pipe leakage stoppage pipe clamp in the deep water field can not realize quick and effective sealing is effectively solved.
Description
Technical Field
The invention relates to the technical field of sea pipe maintenance, in particular to a sealing device of a sea pipe leakage stopping pipe clamp and sea pipe leakage stopping equipment.
Background
In recent years, the number of deepwater marine pipes is increasing, and accidents of deepwater marine pipe leakage are more and more frequent due to the long design and construction period of marine pipes, the change of marine environment, pipeline corrosion, media and the like. The sudden deepwater sea pipe leakage brings great threat to oil and gas field production and marine environment. Once the sea pipe is damaged, the damage to the operation of the deepwater oil and gas field is greatly caused.
In order to reduce the huge economic loss such as marine environmental pollution and crude oil production stoppage, safe, quick and reliable maintenance of damaged pipelines is particularly important. However, the deepwater marine pipe has high maintenance difficulty and the cost is several times higher than that of the deepwater marine pipe, so that the corresponding emergency maintenance scheme is researched aiming at the leakage problem of the deepwater marine pipe, and the development of a matched maintenance tool has important significance for ensuring the safe production of an oil and gas field.
At present, the existing sea pipe plugging pipe clamp operated by a diver within 300 meters and the existing deep water sea pipe plugging pipe clamp operated by an ROV with the length of more than 300 meters in China all adopt a common bolt fastening mode, and radial fastening force is applied through bolts to deform and expand a sea pipe by a radial sealing strip, so that the underwater sealing and plugging function is realized. This traditional mode is under water the construction degree of difficulty big, and work efficiency is extremely low, and the practicality is low, and the sealing strip receives underwater high pressure, corrosive environment influence, and sealed easy inefficacy. The mounting is easy to cause the risks of unqualified sealing, unqualified sealing test and the like. Once the pipeline of the deepwater oil and gas field leaks, serious marine environmental pollution and huge economic loss can be caused, and the research on the emergency leaking stoppage pipe clamp of the marine pipe and the sealing scale thereof are not easy.
Disclosure of Invention
The invention aims to solve the technical problem of providing a sealing device for a sea pipe leaking stoppage pipe clamp, which realizes the sealing function of the sea pipe leaking stoppage pipe clamp and is suitable for the sea pipe leaking stoppage pipe clamp in the shallow water field and the deep water field, and sea pipe leaking stoppage equipment with the sealing device.
The technical scheme adopted by the invention for solving the technical problems is as follows: the sealing device comprises two groups of axial sealing assemblies which are arranged on two opposite sides of the plugging area and extend along the axial direction of the submarine pipeline plugging pipe clamp, two groups of radial sealing assemblies which are respectively arranged on two opposite ends of the plugging area, two pistons which are respectively arranged on two opposite ends of the plugging area, and at least one driving mechanism which is connected with the pistons and drives the pistons to move in opposite directions;
the radial sealing assemblies are positioned between the end parts of the plugging areas and the pistons, and two ends of each axial sealing assembly axially extend to the side surfaces of the two groups of radial sealing assemblies respectively;
the driving mechanism drives the two pistons to move in opposite directions to extrude the radial sealing assembly, and the radial sealing assembly is driven to be tightly held and sealed on the sea pipe.
Preferably, the axial sealing assembly comprises a first axial sealing strip arranged on the side of the blocking area, and a second axial sealing strip superposed on the first axial sealing strip;
the two opposite ends of the first axial sealing strip are respectively attached to the two groups of radial sealing assemblies in partial axial length, and the two opposite ends of the second axial sealing strip are longer than the two opposite ends of the first axial sealing strip and are respectively attached to the two groups of radial sealing assemblies in the rest axial length.
Preferably, the radial seal assembly comprises a first push ring, a first anti-extrusion ring and a seal ring which are axially connected; the first push ring and the first anti-extrusion ring are matched in an inclined plane; when the first push ring extrudes the first anti-extrusion ring, the first anti-extrusion ring is driven to move radially and tightly hold the marine pipe.
Preferably, the inclined plane of first push ring is equipped with convex first round pin axle, the inclined plane of first anti extrusion ring is equipped with and supplies first round pin axle cooperation first spacing hole wherein.
Preferably, the first anti-extrusion ring comprises at least two first arc-shaped sections connected with each other; the connection end surface between the first arc-shaped sections is an inclined surface.
Preferably, the radial seal assembly further comprises a second push ring and two second anti-extrusion rings which are respectively matched with the inclined surfaces of the second push ring and arranged on two opposite sides of the second push ring;
the first push ring, the first anti-extrusion ring and the sealing ring are respectively provided with two parts; the two sealing rings are respectively arranged on one side of the two second anti-extrusion rings, the two first anti-extrusion rings are respectively arranged on one side of the two sealing rings, and the two first push rings are respectively arranged on one side of the two first anti-extrusion rings, wherein the two first push rings are arranged on the opposite side of the two first anti-extrusion rings.
Preferably, the inclined plane of second push ring is equipped with convex second round pin axle, the inclined plane of second anti extrusion ring is equipped with and supplies second round pin axle cooperation second spacing hole wherein.
Preferably, the second anti-extrusion ring comprises at least two second arc-shaped sections connected with each other; the connecting end surfaces between the second arc-shaped sections are inclined planes.
Preferably, the sealing ring is matched with the first push ring and the second push ring respectively in an inclined plane.
Preferably, the driving mechanism comprises a screw rod penetrating into the sea pipe plugging pipe clamp from one end of the sea pipe plugging pipe clamp to connect the two pistons, a nut positioned outside the end part of the sea pipe plugging pipe clamp and matched with the screw rod, a push rod sleeved on the screw rod and capable of abutting against the piston, and a hydraulic cylinder positioned outside the end part of the sea pipe plugging pipe clamp and matched with the screw rod and used for driving the nut to rotate;
the hydraulic cylinder is started to drive the nut to rotate along the screw rod, the push rod is pushed to move axially along the screw rod to extrude the pistons, and the two pistons are driven to move oppositely and extrude the radial sealing assemblies respectively.
Preferably, the sealing device further comprises a control panel arranged on the sea pipe plugging pipe clamp; and the control panel is provided with a hydraulic interface and a pressure gauge.
The invention also provides a sea pipe plugging device which comprises the sealing device and the sea pipe plugging pipe clamp; the internal part of the sea pipe leaking stoppage pipe clamp is provided with a plugging area used for coating leakage points of the sea pipe, and an axial sealing assembly, a radial sealing assembly and a piston of the sealing device correspond to the plugging area and are arranged in the sea pipe leaking stoppage pipe clamp.
The sealing device is used for sealing the sea pipe plugging pipe clamp on the sea pipe, sealing the plugging area of the seabed plugging pipe clamp on the leakage point of the sea pipe through the matching of the axial sealing assembly, the radial sealing assembly and the piston, getting rid of the mode that the sealing strip is deformed to realize sealing by the fastening force generated by locking the conventional plugging pipe clamp by a common bolt, greatly improving the underwater construction efficiency and the sealing effect, and integrally prolonging the service life of the sea pipe plugging pipe clamp. The automation degree is high, the operation is simple, and the safety and the reliability are realized; the installation and maintenance process can be operated by a diver and also can be operated by an ROV, so that the device can be used for the sea pipe leakage stoppage pipe clamp in the shallow water area within 300 meters and can also be used for the sea pipe leakage stoppage pipe clamp in the deep water with the water depth of more than 300 meters, and the problem that the sea pipe leakage stoppage pipe clamp in the deep water field can not realize quick and effective sealing is effectively solved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural view of a sea pipe plugging device (with a sea pipe plugging pipe clamp in a disassembled state) according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a sea pipe plugging pipe clamp and an upper sealing device (partially disassembled driving mechanism) thereof in the sea pipe plugging device according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the radial seal assembly of FIG. 2;
FIG. 4 is a schematic view of the first anti-extrusion ring of FIG. 2;
fig. 5 is a schematic structural diagram of a control panel in the sea pipe plugging device according to an embodiment of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the leakage plugging device for a marine pipe according to an embodiment of the present invention is used for wrapping and clamping a leakage point of a marine pipe to seal the leakage point. The sea pipe leakage stopping equipment comprises a sea pipe leakage stopping pipe clamp 10 and a sealing device arranged on the sea pipe leakage stopping pipe clamp 10. The sea pipe leaking stoppage pipe clamp 10 is used for wrapping leakage points of the sea pipe, and the sealing device seals the sea pipe leaking stoppage pipe clamp 10 and the sea pipe.
The sea pipe plugging pipe clamp 10 is a tubular structure with a certain axial length, and the length of the sea pipe plugging pipe clamp is set on the basis of being larger than the length of a leakage point on a sea pipe so as to sufficiently wrap the leakage point. Generally, to facilitate the disassembly and assembly, the sea pipe plugging pipe clamp 10 comprises two semicircular clamping flaps 11 which are oppositely matched. When the device is installed, the two clamping flaps 11 are matched on the marine vessel from two sides of the marine vessel, and after the two clamping flaps 11 are matched and butted oppositely, the two clamping flaps 11 are locked into a whole through the locking device, so that the marine vessel plugging pipe clamp 10 wrapped on the marine vessel is formed.
The inside of the sea pipe plugging pipe clamp 10 is provided with a plugging area 12 used for coating leakage points of the sea pipe. The plugging area 12 is formed on the inner wall surface of the sea pipe plugging pipe clamp 10, has a certain axial length and is larger than the area of a sea pipe leakage point, and after the sea pipe plugging pipe clamp 10 is coated on a sea pipe, the plugging area 12 is coated on the leakage point.
The sealing arrangement comprises two sets of axial seal assemblies 20, two sets of radial seal assemblies 30, two pistons 40, and at least one drive mechanism 50. The axial seal assembly 20, the radial seal assembly 30 and the piston 40 are all disposed within the sea pipe lost circulation clamp 10.
Two sets of axial seal assemblies 20 are provided on opposite sides of the plugging region 12 and extend in the axial direction of the subsea pipe plugging clamp 10. Two sets of radial seal assemblies 30 are disposed at opposite ends of the blocked area 12, two pistons 40 are disposed at opposite ends of the blocked area 12, and each radial seal assembly 30 is located between an end of the blocked area 12 and a piston 40. The driving mechanism 50 is connected with and drives the two pistons 40 to move in opposite directions, so as to extrude the radial sealing assembly 30 and drive the radial sealing assembly 30 to be tightly clamped and sealed on the marine pipe, thereby sealing the periphery of the plugging area 12 and the marine pipe and achieving the purpose of plugging.
The axial extension length of the axial seal assembly 20 is greater than the axial length of the plugging region 12, and both ends of the axial seal assembly 20 can further extend axially to the sides of the two sets of radial seal assemblies 30, respectively. According to the submarine pipeline plugging pipe clamp 10 formed by oppositely matching two semicircular clamping flaps 11, the axial sealing assembly 20 is arranged at the joint of the two clamping flaps 11 and also seals a gap between the plugging area 12 and the joint of the clamping flaps 11. The butt joints of the two clamping flaps 11 are respectively provided with an axial sealing groove for positioning the axial sealing assembly 20 therein. The axial seal assembly 20 performs the sealing function by squeezing the two snap flaps 11 together when closed.
In particular, each set of axial sealing assemblies 20 may comprise a first axial sealing strip 21 and a second axial sealing strip 22, which are superimposed. A first axial seal 21 is provided on one side of the sealing region 12, extending axially along this side. The second axial sealing strip 22 is located on the side of the first axial sealing strip 21 remote from the sealing area 12.
The length of the second axial seal strip 22 is greater than the length of the first axial seal strip 21 so that opposite ends of the second axial seal strip 22 project beyond opposite ends of the first axial seal strip 21. In the sea pipe plugging pipe clamp 10, the two opposite ends of the first axial sealing strip 21 are respectively attached to the axial lengths of the two groups of radial sealing assemblies 30, and the two opposite ends of the second axial sealing strip 22 are longer than the two opposite ends of the first axial sealing strip and are respectively attached to the axial lengths of the rest parts of the two groups of radial sealing assemblies 30.
Each set of radial seal assemblies 30 may include a first thrust ring 31, a first anti-extrusion ring 32, and a seal ring 33 axially connected. The first push ring 31 and the first anti-extrusion ring 32 are in inclined surface fit; when the first push ring 31 presses the first anti-extrusion ring 32, the first anti-extrusion ring 32 is driven to move radially to clamp on the sea pipe. The inclined surface of the first push ring 31 is arranged so that the width of one end of the first push ring facing the inside of the sea pipe plugging pipe clamp 10 is larger than that of the other opposite end, and the inclined surface of the first anti-extrusion ring 32 is matched with the inclined surface of the first push ring 31.
Furthermore, a first pin shaft 311 protruding from an inclined surface of the first push ring 31, which is matched with the first anti-extrusion ring 32, is provided, a first limiting hole 321 is provided on the inclined surface of the first anti-extrusion ring 32, which is correspondingly matched with the first anti-extrusion ring 32, and the first pin shaft 311 is matched in the first limiting hole 321, so as to play a certain limiting role between the first push ring 31 and the first anti-extrusion ring 32. The first stopper hole 321 has a certain length extending along the inclined surface, and does not affect the radial movement of the first anti-extrusion ring 32 when the first push ring 31 extrudes the first anti-extrusion ring 32.
Of course, the positions of the first limiting hole 321 and the first pin 311 may be interchanged.
As shown in fig. 4, to enable the first anti-extrusion ring 32 to radially move to hug the marine pipe, the first anti-extrusion ring 32 is a non-integral annular structure, which may include at least two first arc-shaped segments 322, and the first anti-extrusion ring 32 is formed by connecting the first arc-shaped segments 322. The connecting end surfaces between the first arc-shaped sections 322 are inclined surfaces (long inclined surfaces), and when the first anti-extrusion rings 32 move radially, the inclined surfaces are designed to enable the inclined surfaces of the first anti-extrusion rings 32 to move in a staggered manner to offset the radius reduction value of the circle formed by the first anti-extrusion rings 32.
The first anti-extrusion ring 32 abuts the sealing ring 33 to prevent the sealing ring 33 from being excessively extruded and failing.
As shown in fig. 2 and 3, in the present embodiment, the radial seal assembly 30 further includes a second push ring 34, and two second anti-extrusion rings 35 respectively disposed on two opposite sides of the second push ring 34 in an inclined surface fit with the second push ring 34. Two first push rings 31, two first anti-extrusion rings 32 and two sealing rings 33 are respectively arranged; the two sealing rings 33 are respectively arranged on the opposite sides of the two second anti-extrusion rings 35, the two first anti-extrusion rings 32 are respectively arranged on the opposite sides of the two sealing rings 33, and the two first push rings 31 are respectively arranged on the opposite sides of the two first anti-extrusion rings 32. The first push ring 31, the first anti-extrusion ring 32, the sealing ring 33 and the second anti-extrusion ring 35 are evenly divided into two groups of ring assemblies, each group of ring assembly is provided with one first push ring 31, one first anti-extrusion ring 32, one sealing ring 33 and one second anti-extrusion ring 35, the two groups of ring assemblies are symmetrically arranged on two sides of the second push ring 34, and the second push ring 34 is located in the middle position of the two groups of ring assemblies. A first anti-extrusion ring 32 and a second anti-extrusion ring 35 are provided on opposite sides of each sealing ring 33 to prevent failure of the sealing rings 33 due to over-extrusion.
The second push ring 34 and the second anti-extrusion ring 35 are also in inclined surface fit, and the second anti-extrusion ring 35 can be clamped on the marine pipe in a radial motion after being extruded. Similarly, the first anti-extrusion ring 32 and the second anti-extrusion ring 35 may include at least two second arc-shaped segments connected with each other; the connecting end surfaces between the second arc-shaped sections are also inclined planes; the specific structure can be referred to as a first anti-extrusion ring 32 shown in fig. 4.
The inclined plane of the second push ring 34, which is matched with the second anti-extrusion ring 35, is provided with a second pin 341 in a protruding manner, the inclined plane of the second anti-extrusion ring 35, which is matched with the first push ring 34, is provided with a second limiting hole 351, so that the second pin 341 is matched with the second anti-extrusion ring 35, and certain limiting effect is achieved between the second push ring 34 and the second anti-extrusion ring 35, and the failure caused by excessive extrusion is prevented. The second stopper hole 351 has a certain length extending along the inclined surface, and does not affect the radial movement of the second anti-extrusion ring 35 when the second push ring 34 extrudes the second anti-extrusion ring 35. Of course, the positions of the second position-limiting hole 351 and the second pin 341 can be interchanged.
Alternatively, the seal ring 33 and the first anti-compression ring 32 and the seal ring 33 and the second anti-compression ring 35 are also in a slope fit, so that the transmission of the compression force can be converted into the radial movement of the first anti-compression ring 32 and the second anti-compression ring 35.
The piston 40 is axially movably disposed within the sea pipe lost circulation clamp 10. The piston 40 is a cylindrical structure, the outer peripheral surface of the piston can be provided with a protruding positioning step 41, and the sea pipe plugging pipe clamp 10 can be internally provided with a groove 13 for the positioning step 41 of the piston 40 to match. The slot 13 is provided with a length greater than that of the positioning step 41 to provide a space for the piston 40 to move axially. The end face of the positioning step 41 may also contact or abut the axial seal assembly 20 as the piston 40 moves axially to compress the radial seal assembly 30.
The drive mechanism 50 may be disposed at one or both ends of the sea pipe lost circulation clamp 10. Alternatively, the driving mechanism 50 may include a screw 51, a nut 52 fitted on the screw 51, a push rod 53, and a hydraulic cylinder 54; the push rod 53 is located between the nut 52 and the piston 40 on the screw 51 and can abut the piston 40. The hydraulic cylinder 54 also cooperates with the nut 52 to drive the nut 52 to rotate along the screw 51, which in turn pushes the push rod 53, and the push rod 53 presses against the piston 40 to move the piston 40 axially.
In this embodiment, as shown in fig. 1 and 2, the driving mechanism 50 is disposed at one end of the sea pipe plugging pipe clamp 10, the screw 51 penetrates into the sea pipe plugging pipe clamp 10 from one end thereof to connect the two pistons 40, the nut 52 is disposed outside the end of the sea pipe plugging pipe clamp 10 and is engaged with the screw 51, the push rod 53 can be disposed inside the sea pipe plugging pipe clamp 10 and the end thereof extends out of the end of the sea pipe plugging pipe clamp 10, and the hydraulic cylinder 54 is disposed outside the end of the sea pipe plugging pipe clamp 10 and is engaged with the screw 51 for driving the nut 52 to rotate.
When the hydraulic cylinder 54 is started to drive the nut 52 to rotate along the screw 51, the nut 52 pushes the push rod 53 to move axially along the screw 51 and press the pistons 40 adjacent to the push rod, so that the two pistons 40 are driven to move towards each other and respectively press the radial seal assemblies 30, and further the first anti-extrusion ring 32 and the second anti-extrusion ring 35 are driven to move radially to clamp on the marine pipe.
In other embodiments, the driving mechanisms 50 are respectively disposed at both ends of the sea pipe plugging pipe clamp 10 to respectively drive the two pistons 40 to axially move.
Further, the sealing device further comprises a control panel 60 mounted on the sea pipe lost circulation pipe clamp 10. The control panel 60 is provided with a hydraulic interface for connecting with the driving mechanism 50, and a pressure gauge. In this embodiment, as shown in fig. 5, the control panel 60 is provided with two hydraulic interfaces and two pressure gauges, the two hydraulic interfaces are an extrusion hydraulic interface 61 and a sealing test interface 62, respectively, and the two pressure gauges are an extrusion pressure gauge 63 and a sealing test pressure gauge 64, respectively. The extrusion hydraulic interface 61 is used for connecting the hydraulic cylinder 54 of the driving mechanism through a hydraulic pipeline, and the extrusion pressure gauge 63 is used for displaying the pressure value of the extrusion piston 40 of the driving mechanism 50. The sealing test interface 62 is used for being connected to the periphery of the plugging area 12 of the sea pipe leak plugging pipe clamp 10 through a sealing detection pipeline so as to inject hydraulic oil to test the sealing performance of the sealing area enclosed between the sealing ring 33 and the axial sealing assembly 20, and the sealing test pressure gauge 64 is used for displaying the pressure value of the sealing area.
When the device is installed on a marine pipe, firstly, two clamping flaps 11 of a marine pipe leakage stopping pipe clamp 10 are oppositely matched and wrapped outside a leakage point of the marine pipe to be maintained, and then the two clamping flaps 11 are locked together by using a locking device. In the locking process, the axial sealing assembly 20 is extruded by the two clamping flaps 11 to deform and expand the axial sealing grooves of the two clamping flaps 11, so that the axial sealing effect is achieved. After the axial sealing is completed, the ROV inserts a hydraulic quick coupling (hot stab) into an extrusion hydraulic interface 61 of the control panel 60, drives the hydraulic cylinder 54 to operate through a hydraulic pipeline, and further drives the nut 52 to rotate, the nut 52 rotates to make an axial motion along the screw 251 and extrudes the push rod 53 to make an axial motion along the screw 51, and the piston 40 moves axially to extrude the radial sealing assembly 30. After the radial sealing assembly 30 tightly holds the sea pipe, the sealing ring 33 is pressed, deformed and tightly expands the sea pipe under the action of axial force, so that the effect of radial sealing is achieved. When the piston 40 moves to the bottom of the sealing stroke, which represents the completion of the radial sealing process, the pressure gauge 63 of the control panel 60 can observe whether the sealing process is completed. After the sealing action is finished, the ROV inserts the sealing test joint into the sealing test interface 62 of the control panel 60, the sealing test oil enters a sealing area formed between the axial sealing assembly 20 and the sealing ring 33, the sealing test pressure gauge 64 is observed, and when the pressure value of the sealing test pressure gauge 64 reaches a certain value and keeps unchanged, the sealing condition of the marine pipe leaking stoppage pipe clamp 10 is proved to be good, and the sealing installation is finished.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A sealing device of a sea pipe leaking stoppage pipe clamp is characterized by comprising two groups of axial sealing assemblies, two groups of radial sealing assemblies, two pistons and at least one driving mechanism, wherein the two groups of axial sealing assemblies are arranged on two opposite sides of a plugging area and extend along the axial direction of the sea pipe leaking stoppage pipe clamp;
the radial sealing assemblies are positioned between the end parts of the plugging areas and the pistons, and two ends of each axial sealing assembly axially extend to the side surfaces of the two groups of radial sealing assemblies respectively;
the driving mechanism drives the two pistons to move in opposite directions to extrude the radial sealing assembly, so that the radial sealing assembly is driven to be tightly held and sealed on the sea pipe;
the radial sealing assembly comprises a first push ring, a first anti-extrusion ring and a sealing ring which are axially connected, and further comprises a second push ring and a second anti-extrusion ring;
the two second anti-extrusion rings are respectively matched with the second push ring inclined planes and arranged on two opposite sides of the second push ring; the first push ring, the first anti-extrusion ring and the sealing ring are respectively provided with two parts; the two sealing rings are respectively arranged on the opposite sides of the two second anti-extrusion rings, the two first anti-extrusion rings are respectively arranged on the opposite sides of the two sealing rings, the two first push rings are respectively arranged on the opposite sides of the two first anti-extrusion rings, and the first push rings and the first anti-extrusion rings are in inclined surface fit; when the first push ring extrudes the first anti-extrusion ring, the first anti-extrusion ring is driven to move radially and tightly hold the marine pipe.
2. The sealing device of claim 1, wherein the axial seal assembly includes a first axial seal strip disposed on a side of the blocked area, a second axial seal strip overlying the first axial seal strip;
the two opposite ends of the first axial sealing strip are respectively attached to the two groups of radial sealing assemblies in partial axial length, and the two opposite ends of the second axial sealing strip are longer than the two opposite ends of the first axial sealing strip and are respectively attached to the two groups of radial sealing assemblies in the rest axial length.
3. The sealing device according to claim 1, wherein the inclined surface of the first push ring is provided with a protruding first pin shaft, and the inclined surface of the first anti-extrusion ring is provided with a first limiting hole for the first pin shaft to fit into.
4. The sealing device of claim 1, wherein the first anti-extrusion ring comprises at least two contiguous first arcuate segments; the connection end surface between the first arc-shaped sections is an inclined surface.
5. The sealing device according to claim 1, wherein the inclined surface of the second push ring is provided with a protruding second pin shaft, and the inclined surface of the second anti-extrusion ring is provided with a second limiting hole for the second pin shaft to fit into.
6. The sealing device according to claim 1, wherein the driving mechanism comprises a screw rod penetrating from one end of the sea pipe plugging pipe clamp into the sea pipe plugging pipe clamp to connect the two pistons, a nut which is arranged outside the end of the sea pipe plugging pipe clamp and is matched on the screw rod, a push rod which is sleeved on the screw rod and can be abutted against the pistons, and a hydraulic cylinder which is arranged outside the end of the sea pipe plugging pipe clamp and is matched on the screw rod and is used for driving the nut to rotate;
the hydraulic cylinder is started to drive the nut to rotate along the screw rod, the push rod is pushed to move axially along the screw rod to extrude the pistons, and the two pistons are driven to move oppositely and extrude the radial sealing assemblies respectively.
7. The seal of any one of claims 1 to 6, further comprising a control panel mounted on the sea pipe lost circulation pipe clamp; and the control panel is provided with a hydraulic interface and a pressure gauge.
8. A sea pipe plugging device, which is characterized by comprising the sealing device as claimed in any one of claims 1 to 7 and a sea pipe plugging pipe clamp; the internal part of the sea pipe leaking stoppage pipe clamp is provided with a plugging area used for coating leakage points of the sea pipe, and an axial sealing assembly, a radial sealing assembly and a piston of the sealing device correspond to the plugging area and are arranged in the sea pipe leaking stoppage pipe clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910798601.4A CN110541996B (en) | 2019-08-27 | 2019-08-27 | Sealing device of sea pipe leaking stoppage pipe clamp and sea pipe leaking stoppage equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910798601.4A CN110541996B (en) | 2019-08-27 | 2019-08-27 | Sealing device of sea pipe leaking stoppage pipe clamp and sea pipe leaking stoppage equipment |
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| Publication Number | Publication Date |
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| CN110541996A CN110541996A (en) | 2019-12-06 |
| CN110541996B true CN110541996B (en) | 2021-05-28 |
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| CN201910798601.4A Active CN110541996B (en) | 2019-08-27 | 2019-08-27 | Sealing device of sea pipe leaking stoppage pipe clamp and sea pipe leaking stoppage equipment |
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| CN111022796A (en) * | 2019-12-09 | 2020-04-17 | 深圳海油工程水下技术有限公司 | Bolt with tensioning function and sea pipe flange connecting structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2218865Y (en) * | 1995-05-05 | 1996-01-31 | 巩义市双龙大型管件厂 | Pipe blocking device |
| JP3948818B2 (en) * | 1998-03-27 | 2007-07-25 | 株式会社水道技術開発機構 | Fixing structure for pipe fittings |
| CN2386261Y (en) * | 1999-09-03 | 2000-07-05 | 谢兴武 | Flexible metal sealing washer |
| CN2799164Y (en) * | 2005-06-21 | 2006-07-26 | 江苏国力锻压机床有限公司 | Adjustable work bench of plate shearing machine |
| CN100588863C (en) * | 2008-04-15 | 2010-02-10 | 哈尔滨工程大学 | Deep water flange automatic connection nut aligning and screwing device |
| CN201401310Y (en) * | 2009-04-29 | 2010-02-10 | 王淑桂 | Packing sealing ring of gas compressor |
| CN205026308U (en) * | 2015-09-18 | 2016-02-10 | 四川德源石油天然气工程有限公司 | Be applied to fixture structure of pipeline leaking stoppage |
| CN105736894B (en) * | 2016-04-25 | 2017-09-05 | 青岛理工大学 | Offshore platform high-pressure process pipeline hydraulic Quick leak stoppage apparatus |
| CN108180345A (en) * | 2018-02-28 | 2018-06-19 | 中国海洋大学 | The lock sealing device of non-stop plugging pipe clamp |
| CN110206962A (en) * | 2019-05-31 | 2019-09-06 | 中国海洋石油集团有限公司 | A kind of sealing device for submarine pipeline maintenance pipe clamp |
-
2019
- 2019-08-27 CN CN201910798601.4A patent/CN110541996B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110541996A (en) | 2019-12-06 |
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Address after: 518067 4th floor, phase I, Shekou science and technology building, Nanhai Avenue, Nanshan District, Shenzhen City, Guangdong Province Patentee after: CNOOC Shenzhen Ocean Engineering Technology Service Co.,Ltd. Address before: 518067 4th floor, phase I, Shekou science and technology building, Nanhai Avenue, Nanshan District, Shenzhen City, Guangdong Province Patentee before: COOEC SUBSEA TECHNOLOGY Co.,Ltd. |
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