CN210118582U

CN210118582U - Pipeline plugging device

Info

Publication number: CN210118582U
Application number: CN201920415610.6U
Authority: CN
Inventors: 张海龙; 王辉; 陈为钦; 李健; 孙旭; 舒伟; 魏立; 林土生; 郑金豹; 李景福; 高嵩淳; 郜明军
Original assignee: China National Offshore Oil Corp CNOOC; CNOOC Deepwater Development Ltd
Current assignee: China National Offshore Oil Corp CNOOC; CNOOC Deepwater Development Ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-02-28
Anticipated expiration: 2029-03-28

Abstract

The utility model relates to a pipeline plugging device, which comprises a plugging component and a plurality of supporting components; the plugging assembly comprises a first clamping plate, a second clamping plate, a flexible sealing element and an extrusion mechanism; the first clamping plate and the second clamping plate are arranged in the pipeline side by side along the axial direction; the flexible seal is disposed between the first clamping plate and the second clamping plate; the extrusion mechanism extends into the pipeline and is connected with the first clamping plate so as to push the first clamping plate to move towards the second clamping plate, and the flexible sealing element is extruded to radially expand to seal the pipeline; the plurality of supporting assemblies are arranged in the pipeline side by side along the axial direction and are respectively connected with the extrusion mechanism so as to support and fix the plugging assembly. The pipeline plugging device has the advantages of simple and convenient operation, good sealing effect, low requirement on the inner diameter size of the pipeline and difficulty in sliding.

Description

Pipeline plugging device

Technical Field

The utility model relates to a sea oil engineering technical field, more specifically say, relate to a pipeline plugging device.

Background

With the rapid development of the marine oil industry in China, the reconstruction and the expansion of the established ocean platform are more and more frequent, and in some engineering projects, in order to access new process system equipment, the original platform process system is often required to be stopped for reconstruction, namely, the system is subjected to fire access operation on the original process pipeline after pressure relief and emptying. The risk of fire operation on an oil and gas pipeline is extremely high, and the key measure for reducing the risk is to effectively perform inerting replacement on the system before operation and implement oil and gas isolation, namely to isolate the oil and gas from a fire point.

At present, two common devices for implementing plugging are provided, one is an inflatable rubber bag isolating device which mainly comprises a rubber bag and an inflatable hose, the specific method is that the inflatable bag is placed in a pipeline, the air bag is inflated to fully expand and is tightly attached to the inner wall of the pipeline for plugging, the maximum inflation pressure of the air bag is generally allowed to be 0.3Bar, the pressure in the pipeline can not be pressed in the operation process, the control requirement on the inflation pressure is strict, the situation of unstable air bag blasting is easy to occur, and inert gas (nitrogen gas) can not be continuously injected into the pipeline in the operation process. The device is easily scalded by a fire source in operation, cannot monitor the inside of an oil and gas pipeline in real time, and cannot be fixed.

The other type is a common rubber splint type plugging device, a common rubber splint plugging tool comprises an isolation component and an inflation component, nitrogen can be continuously injected into the pipeline in the operation process, the clamping rubber is common hard butadiene-acrylonitrile rubber, the transverse expansion amount is small (about 5mm), the requirement on the size of the inner diameter of the pipeline is high, the common rubber splint plugging tool cannot be used for the operation of a fire of a seamed pipeline, the plugging pressure is small (about 0.1Bar), no fixed part is provided, and the outward sliding condition of the plugging tool is easy to occur. In addition, the rubber transverse expansion amount of the plugging device is small, the requirement on the inner diameter size of the pipe is high, and meanwhile, real-time monitoring and external fixation cannot be carried out on the inside of the pipe.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing an operation of being convenient for, and can shutoff pipeline with oil gas and the pipeline plugging device that moves the fire point and separate.

The utility model provides a technical scheme that its technical problem adopted is: constructing a pipeline plugging device, which comprises a plugging component and a plurality of supporting components;

the plugging assembly comprises a first clamping plate, a second clamping plate, a flexible sealing element and an extrusion mechanism; the first clamping plate and the second clamping plate are arranged in the pipeline side by side along the axial direction; the flexible seal is disposed between the first clamping plate and the second clamping plate; the extrusion mechanism extends into the pipeline and is connected with the first clamping plate so as to push the first clamping plate to move towards the second clamping plate, and the flexible sealing element is extruded to radially expand to seal the pipeline;

the plurality of supporting assemblies are arranged in the pipeline side by side along the axial direction and are respectively connected with the extrusion mechanism so as to support and fix the plugging assembly.

Preferably, the squeezing mechanism comprises a squeezing sleeve and a handle; the extrusion sleeve extends into the pipeline and is connected with the first clamping plate; the handle is arranged at one end of the extrusion sleeve far away from the first clamping plate.

Preferably, the support assembly comprises a sleeve hoop and a plurality of support frames; the sleeve hoop is sleeved on the periphery of the extrusion sleeve; the support frames are separately arranged on the outer side wall of the sleeve hoop and are arranged along the radial direction, one end of each support frame is connected with the sleeve hoop, and the other end of each support frame is abutted to the inner side wall of the pipeline.

Preferably, the support frame comprises a support rod and a bolt which is arranged at one end of the support rod, which is far away from the sleeve hoop, and provided with a flexible plug.

Preferably, the device further comprises an inflation assembly for inflating the pipeline; the inflation assembly comprises an inflation tube extending into the pipeline and an inflation tube connector (132) arranged at one end of the inflation tube;

the inflation tube is arranged in the extrusion sleeve in a penetrating mode, one end of the inflation tube is connected with the handle, and the other end of the inflation tube penetrates out of the first clamping plate, the flexible sealing piece and the second clamping plate.

Preferably, a detection component is further included; the detection assembly is arranged at one end, far away from the handle, of the inflation tube.

Preferably, the shape and size of the first and second jaws are adapted to the shape and size of the cross-section of the pipe.

Preferably, one side of the first clamping plate, which is opposite to the flexible sealing element, is provided with a plurality of first reinforcing ribs;

the first reinforcing ribs are separated and radially arranged.

Preferably, one side of the second clamping plate, which is opposite to the flexible sealing element, is provided with a plurality of second reinforcing ribs;

the second reinforcing ribs are separated and radially arranged.

Preferably, the material of the flexible sealing element comprises soft foam rubber;

the diameter of the flexible sealing element is matched with the diameter of the pipeline.

Implement the utility model discloses a pipeline plugging device has following beneficial effect: this pipeline plugging device extends the pipeline through the extrusion mechanism with this plugging assembly in through setting up plugging assembly and a plurality of supporting component, is connected with this first splint, promotes this first splint and moves towards this second splint, extrudees this flexible seal spare, makes its radial expansion shutoff pipeline, and then keeps apart oil gas and ignition. In addition, the plurality of supporting assemblies are arranged in the pipeline side by side along the axial direction and are respectively connected with the extrusion mechanism to support and fix the plugging assembly, so that the sealing effect is prevented from being influenced by the sliding of the plugging assembly. The pipeline plugging device has the advantages of simple and convenient operation, good sealing effect, low requirement on the inner diameter size of the pipeline and difficulty in sliding.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of the pipeline plugging device of the present invention;

FIG. 2 is a sectional view of the pipeline plugging device of the present invention;

fig. 3 is a schematic structural view of a supporting component of the pipeline plugging device of the present invention;

fig. 4 is a schematic structural view of a first clamping plate of the pipeline plugging device of the invention;

fig. 5 is a schematic structural view of a second clamping plate of the pipeline plugging device of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 to 5 show a preferred embodiment of the pipe plugging device of the present invention.

This pipeline plugging device, it can be before carrying out the operation of firing access for the shutoff pipeline separates oil gas and firing point, reduces the danger of pipeline firing operation. The pipeline plugging device has the advantages of simple and convenient operation, good sealing effect, low requirement on the inner diameter size of the pipeline and difficulty in sliding.

As shown in fig. 1, the pipeline plugging device comprises a plugging component 110 and a plurality of support components 120; the plugging assembly 110 may be disposed in a pipeline 200, which may function to plug the pipeline 200, isolating oil and gas from a fire. The plurality of supporting members 120 can be used for supporting the plugging member 110, so as to prevent the plugging member 110 from sliding and further affecting the plugging effect.

Further, as shown in fig. 1 and 2, the plugging assembly 110 includes a first clamping plate 111, a second clamping plate 112, a flexible sealing member 113, and a pressing mechanism 114; the first clamping plate 111 and the second clamping plate 112 are axially arranged side by side in the pipeline 200, and can be used for clamping the flexible sealing member 113, so that the flexible sealing member 113 radially expands to seal the pipeline 200. The flexible density member 113 is disposed between the first clamping plate 111 and the second clamping plate 112, and can be expanded to be in close contact with the inner wall of the pipeline 200, thereby sealing the pipeline 200. The pressing mechanism 114 can extend into the pipe 200, and can be connected to the first clamping plate 111, and can be operated by an operator to push the first clamping plate 111 toward the second clamping plate 112, so as to press the flexible sealing member 113 to radially expand and close the pipe 200.

Specifically, as shown in fig. 4, the first clamping plate 111 may be made of a carbon steel material (Q235), but it is understood that the first clamping plate 111 may be made of an aluminum alloy material to reduce the overall weight. The shape and size of the first clamping plate 111 are adapted to the shape and size of the cross-section of the pipe 200. In this embodiment, the cross-sectional shape of the first clamping plate 111 may be a circle, and the diameter of the circle is adapted to the diameter of the pipe 200. Of course, it is understood that in other embodiments, the shape of the first clamping plate 111 is not limited, and the size thereof is equal to or smaller than the size of the pipe 200. A plurality of first reinforcing ribs 1111 are arranged on one side of the first clamping plate 111 opposite to the flexible sealing member 113; which is integrally formed with the first clamping plate 111. The plurality of first reinforcing ribs 1111 are separated and radially disposed on the first clamping plate 111, and in particular, may be disposed in a cross shape, and the first reinforcing ribs 1111 may be used to reinforce the rigidity of the first clamping plate 111. The number of the first reinforcing ribs 1111 is not limited, and is not limited to the radial arrangement. In this embodiment, it may be four, and it is understood that in other embodiments, it may be two, three or more.

Specifically, as shown in fig. 5, the second clamping plate 112 can be made of carbon steel (Q235), but it is understood that the second clamping plate 112 can be made of aluminum alloy for reducing the overall weight. The shape and size of the second clamping plate 112 is adapted to the shape and size of the cross-section of the pipe 200. In this embodiment, the cross-sectional shape of the second clamping plate 112 may be a circle, the diameter of which is adapted to the diameter of the pipe 200. Of course, it is understood that in other embodiments, the second clamping plate 112 is not limited to a specific shape and may have a size equal to or smaller than the size of the pipe 200. A plurality of second reinforcements 1112 are arranged on one side of the second clamping plate 112 opposite to the flexible sealing member 113; which is integrally formed with the second clamping plate 112. The second reinforcements 1112 are separated and radially arranged on the second splint 112, and specifically, they may be arranged in a cross shape, and the second reinforcements 1112 may be used to reinforce the rigidity of the second splint 112. The number of the plurality of second reinforcements 1112 is not limited and is not limited to a radial arrangement. In this embodiment, it may be four, and it is understood that in other embodiments, it may be two, three or more.

In this embodiment, a handle may be disposed on the first clamping plate 111 and the second clamping plate 112, the handle is disposed on a side of the first clamping plate 111 opposite to the flexible sealing member 113, and a side of the second clamping plate 112 opposite to the flexible sealing member 113, and the handle may facilitate the detachment and installation of the first clamping plate 111 and the second clamping plate 112. Of course, it will be appreciated that in other embodiments, the handle may be omitted.

As shown in fig. 1 and 2, the flexible sealing member 113 may be fixed to the first clamping plate 111 on one side and the second clamping plate 112 on the other side. The flexible sealing member 113 may be made of a flexible material with high temperature resistance and oil resistance. In particular, it can be made of soft foamed rubber, can realize great swelling capacity, keeps better tightness. The flexible seal 113 may be of a solid or hollow construction. In the present embodiment, it is preferably a hollow structure, and its thickness may be 50 mm. The diameter of the flexible seal 113 may be adapted to the diameter of the pipe 200, but it may be smaller than the diameter of the pipe 200, as long as the expanded diameter is equal to or larger than the diameter of the pipe 200. The flexible sealing member 113 can be radially expanded by the first clamping plate 111 and the second clamping plate 112 to tightly contact with the pipe wall of the pipe 200, thereby sealing the pipe 200.

The squeezing mechanism 114 includes a squeezing sleeve 1141 and a handle 1142; the squeeze sleeve 1141 may be raised into the pipe 200 to be coupled to the first jaw 111. A through hole is formed on a side of the first clamping plate 111 opposite to the flexible sealing member 113, and the extruding sleeve 1141 can be inserted into the through hole, so as to be connected to the first clamping plate 111. The handle 1142 is disposed at an end of the squeeze sleeve 1141 remote from the first jaw 111, which is located outside the conduit 200, and is convenient for an operator to operate. In this embodiment, the handle 1142 may be a screw rod that may be coupled to the squeeze sleeve 1141 by a screw nut.

As shown in fig. 1 and 3, in the present embodiment, the plurality of supporting elements 120 may include two supporting elements. The two support members are spaced apart and positioned side-by-side on the squeeze sleeve 1141, which prevents the occluding assembly 110 from slipping. Of course, it is understood that in other embodiments, the number of support assemblies 120 may include one support assembly or a plurality of support assemblies. Each support assembly 120 comprises a sleeve hoop 121 and a plurality of support frames 122; the sleeve anchor ear 121 can be sleeved on the periphery of the extrusion sleeve 1141, and can be used for connecting the supporting frame 122 and the extrusion sleeve 1141. The plurality of support frames 122 may include two support frames or a plurality of support frames, and in this embodiment, it preferably includes three support frames 122. The plurality of support frames 122 are separately disposed on the outer side wall of the casing hoop 121 and are radially disposed, and the sum of the length of the support frames and the radius of the casing hoop 121 is matched with the radius of the pipeline 200, so that one end of the support frames is connected with the casing hoop 121, and the other end of the support frames is abutted against the inner side wall of the pipeline 200, thereby supporting and fixing the plugging component 110.

In the present embodiment, specifically, the supporting frame 122 includes a supporting rod 1221 and a bolt 1222; this bracing piece 1221 extends the setting towards the inside wall of this pipeline 200, this bolt 1222 sets up and keeps away from this sleeve pipe staple bolt 121 one end at this bracing piece 1221, the one end of this bolt 1222 is equipped with flexible end cap, this flexible end cap cover is established in the periphery of this bolt 1222, it can be used for with the inside wall butt of this pipeline 200, play the effect of reinforcing frictional force and stability to pipeline 200 is lasting towards fixed of nitrogen in-process shutoff subassembly 110, prevents that the interior gas of pipeline 200 from expanding suddenly, stepping up, shutoff worker subassembly 110 is ejecting to cause the isolation inefficacy. Specifically, the flexible plug may be made of rubber.

As shown in fig. 1 and fig. 2, in this embodiment, the pipeline plugging device further includes an inflation assembly 130; the inflation assembly 130 can be used for inflating the pipeline 200, continuously inflating nitrogen into the pipeline 200 in the process of fire, taking away liquid volatile matters in the pipeline 200, keeping micro-positive pressure of about 0.3bar in the pipeline 200, emptying and detecting at the far end, and ensuring safe and reliable fire operation. The inflation assembly 130 includes an inflation tube 131 disposed to extend into the conduit 200, and an inflation tube fitting 132. The gas tube 131 is inserted into the squeeze sleeve 1141, and one end of the gas tube is connected to the handle 1142, and the other end of the gas tube is extended out of the first clamp 111, the flexible sealing member 113 and the second clamp 112, so as to transmit gas into the pipeline 200 and take away liquid volatile in the pipeline 200. The gas tube connector 132 is provided at one end of the gas tube 131, and is used to introduce gas. One end of the gas-filled tube 131 can be provided with a monitoring port joint so as to detect the flow rate and pressure of the gas filled. Of course, it is understood that in other embodiments, the inflation tube connector 132 may be omitted and an end of the inflation tube 131 may be provided with an inflation cap.

In this embodiment, the pipeline plugging device further comprises a detection assembly; this detection subassembly sets up the one end of keeping away from this handle 1142 at this gas tube 131, specifically, it can be for detecting instrument tube, and it can be used to detect the combustible gas and the pressure condition in the pipeline 200 often, under the condition that combustible gas concentration becomes high or pressure increase, in time stops thermal engineering operation, avoids dangerous the emergence.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The pipeline plugging device is characterized by comprising a plugging component (110) and a plurality of supporting components (120);

the plugging assembly (110) comprises a first clamping plate (111), a second clamping plate (112), a flexible sealing member (113) and a pressing mechanism (114); the first clamping plate (111) and the second clamping plate (112) are arranged side by side in the axial direction in the pipeline (200); the flexible seal (113) is disposed between the first clamping plate (111) and the second clamping plate (112); the pressing mechanism (114) extends into the pipeline (200) and is connected with the first clamping plate (111) to push the first clamping plate (111) to move towards the second clamping plate (112) so as to press the flexible sealing element (113) to radially expand to seal off the pipeline (200);

the supporting assemblies (120) are arranged in the pipeline (200) side by side along the axial direction and are respectively connected with the squeezing mechanism (114) so as to support and fix the plugging assembly (110).

2. The pipeline occlusion device of claim 1, wherein the squeeze mechanism (114) comprises a squeeze sleeve (1141) and a handle (1142); the extrusion sleeve (1141) extends into the pipeline (200) and is connected with the first clamping plate (111); the handle (1142) is disposed at an end of the squeeze sleeve (1141) distal to the first jaw (111).

3. The pipe plugging device of claim 2, wherein said support assembly (120) comprises a sleeve hoop (121) and a plurality of support brackets (122); the sleeve hoop (121) is sleeved on the periphery of the extrusion sleeve (1141); the support frames (122) are separately arranged on the outer side wall of the sleeve hoop (121) and are arranged along the radial direction, one end of each support frame is connected with the sleeve hoop (121), and the other end of each support frame is abutted against the inner side wall of the pipeline (200).

4. The pipe plugging device of claim 3, wherein the support frame (122) comprises a support rod (1221), and a bolt (1222) with a flexible plug disposed at an end of the support rod (1221) remote from the sleeve hoop (121).

5. The pipeline plugging device of claim 2, further comprising an inflation assembly (130) for inflating the pipeline (200); the inflation assembly (130) comprises an inflation tube (131) extending into the pipeline (200) and an inflation tube joint (132) arranged at one end of the inflation tube (131);

the inflation tube (131) penetrates through the extrusion sleeve (1141), one end of the inflation tube is connected with the handle (1142), and the other end of the inflation tube penetrates out of the first clamping plate (111), the flexible sealing element (113) and the second clamping plate (112).

6. The pipeline plugging device of claim 5, further comprising a detection assembly; the detection assembly is arranged at one end of the inflation tube (131) far away from the handle (1142).

7. The pipe plugging device according to claim 1, wherein the shape and size of the first clamping plate (111) and the second clamping plate (112) are adapted to the shape and size of the cross-section of the pipe (200).

8. The pipe plugging device of claim 1, wherein a side of the first clamping plate (111) opposite to the flexible sealing member (113) is provided with a plurality of first reinforcing ribs (1111);

the first reinforcing ribs (1111) are separated and radially arranged.

9. The pipe plugging device according to claim 1, wherein a side of the second clamping plate (112) opposite to the flexible sealing member (113) is provided with a plurality of second reinforcing ribs (1112);

the second reinforcing ribs (1112) are separated and arranged in a radial shape.

10. The pipe plugging device of claim 1, wherein the material of the flexible sealing member (113) comprises a soft foam rubber;

the diameter of the flexible sealing element (113) is adapted to the diameter of the pipe (200).