Plugging device for oil and gas storage and transportation pipeline

Abstract

The utility model belongs to the technical field of pipeline plugging, and discloses an oil and gas storage and transportation pipeline plugging device which comprises an air bag, a rotating rod is rotationally connected into the air bag, an extrusion plate located at the rear end of the air bag is arranged at the rear end of the rotating rod, and a connecting plate located on the surface of the rotating rod is fixedly installed at the front end of the air bag. And the connecting plate is in threaded connection with the rotating rod. The gear can be driven by the sliding rod to rotate, the rotating disc can be driven by the gear to rotate, then the sliding block can move upwards in the sliding hole, the sliding block can drive the sliding plate and the contact block to move oppositely, then the surface of the contact block can make contact with the inner wall of the oil and gas pipeline, and therefore equipment can be fixed in the oil and gas pipeline. And finally, the sliding rod is rotated to enable the contact blocks to move in opposite directions, so that an operator can conveniently fix the device in the pipeline, and the fixing effect of the device is improved by self-locking the gear.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline plugging, and specifically relates to an oil and gas storage and transportation pipeline plugging device. Background Technique

[0002] When conducting oil and gas storage and transportation, transportation is carried out through pipelines. During actual transportation and maintenance, pipelines often exceed their service life or are damaged. Therefore, it is necessary to regularly replace or repair the pipelines. When carrying out segmented demolition, due to the residual oil-water mixture in the pipeline, in order to avoid environmental pollution, it is necessary to plug the pipeline.

[0003] Currently, most traditional pipeline plugging devices use inflatable airbags to plug pipelines. The airbag is placed inside the pipeline and then expanded by extrusion to complete the plugging of the pipeline. When installing the equipment, a flange connection method is mostly used. Although this connection method ensures the stability of the pipeline system to a certain extent, in the actual application process, its installation process is relatively cumbersome and inefficient. Specifically, when installing a traditional plugging device, operators usually need to carry and operate external auxiliary equipment such as bolt wrenches and tightening tools to ensure the tight fit between the flanges, so as to achieve the expected sealing effect. This installation process reduces the convenience of equipment installation. Content of the Utility Model

[0004] To solve the problems raised in the above background technique, the utility model provides an oil and gas storage and transportation pipeline plugging device.

[0005] To achieve the above object, the utility model provides the following technical solution: an oil and gas storage and transportation pipeline plugging device, including an airbag, a rotating rod is rotatably connected inside the airbag, an extrusion plate located at the rear end of the airbag is arranged at the rear end of the rotating rod, a connecting plate located on the surface of the rotating rod is fixedly installed at the front end of the airbag, and the connecting plate is in threaded connection with the rotating rod;

[0006] A fixing mechanism is provided at the front end of the connecting plate. The fixing mechanism includes a square groove, which is opened at the front end of the connecting plate. There are four square grooves, and they are evenly distributed at the front end of the connecting plate. A vertical rod is arranged inside the square groove, and a sliding plate is slidably connected to the surface of the vertical rod. A first limiting ring is arranged at the center of one side of the connecting plate where the square groove is opened. A rotating rod passes through the first limiting ring, and the surface of the rotating rod is away from the inner wall of the first limiting ring. A rotating disk is fixedly installed at the front end of the first limiting ring. A sliding hole is opened on the surface of the rotating disk. A contact block located on the outer surface of the rotating disk is fixedly installed at the front end of the sliding plate away from the surface of the rotating rod, and the contact block does not interfere with the rotating disk. A slider located inside the sliding hole is fixedly installed at the front end of the sliding plate close to the surface of the rotating rod. The slider can slide inside the sliding hole. A toothed ring is arranged on the surface of the rotating disk. A second limiting ring is rotatably connected to the inside of the front end of the connecting plate. A gear meshing with the toothed ring is fixedly installed at the front end of the second limiting ring. A sliding rod is arranged inside the gear.

[0007] Preferably, it further includes: a self-locking mechanism, which is designed at the front end of the connecting plate. The self-locking mechanism includes a circular groove, which is opened at the front end of the connecting plate. A connecting rod located inside the circular groove is fixedly installed at the rear end of the sliding rod. A limiting groove is opened at the rear end inside the circular groove. A limiting block located inside the limiting groove is fixedly installed at the rear end of the connecting rod. A fixing ring located on the surface of the connecting rod is fixedly installed inside the circular groove. A connecting ring is rotatably connected to the surface of the connecting rod. A spring located on the surface of the connecting rod is elastically connected between the fixing ring and the connecting ring.

[0008] Preferably, a baffle is arranged at the front end of the slider, and the rear end of the baffle contacts the surface of the rotating disk. The slider is designed as a cylinder.

[0009] Preferably, both sides of the contact block away from the rotating disk and the toothed ring are designed as arcs, and the surface of the contact block is rough.

[0010] Preferably, a convex block is arranged on the surface of the sliding rod, and the surface of the sliding rod fully fits with the inside of the gear.

[0011] Preferably, the first limiting ring is designed as a T shape, and the first limiting ring can rotate inside the connecting plate.

[0012] Preferably, a handle is arranged at the front end of the sliding rod, and the surface of the handle is designed as rough.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The utility model makes the sliding rod move forward by pulling the handle, then the handle can be rotated, and then the sliding rod, the connecting rod and the limiting block will rotate accordingly. Then the sliding rod will drive the gear to rotate, and the gear will drive the rotating disc to rotate. Then the slider will move upward inside the sliding hole, and the slider will drive the sliding plate and the contact block to move towards each other. Then the surface of the contact block will contact with the inner wall of the oil and gas pipeline, so that the device can be fixed inside the oil and gas pipeline. Finally, by rotating the sliding rod to make the contact blocks move towards each other, it is convenient for the operator to fix the device inside the pipeline, and by locking the gear, the fixing effect of the device is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is a schematic front view of the equipment of the utility model;

[0017] Figure 3 is a schematic sectional view of the airbag of the utility model;

[0018] Figure 4 is a schematic diagram showing the slider of the utility model;

[0019] Figure 5 is a schematic diagram showing the second limiting ring of the utility model;

[0020] Figure 6 is a schematic diagram showing the sliding rod of the utility model.

[0021] In the figure: 1. airbag; 2. rotating rod; 3. pressing plate; 4. connecting plate; 5. square groove; 6. vertical rod; 7. sliding plate; 8. contact block; 9. slider; 10. first limiting ring; 11. rotating disc; 12. sliding hole; 13. toothed ring; 14. second limiting ring; 15. gear; 16. sliding rod; 17. connecting rod; 18. limiting groove; 19. limiting block; 20. fixing ring; 21. connecting ring; 22. spring; 23. circular groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Such as Figures 1 to 6As shown in the figure, the utility model provides an oil and gas storage and transportation pipeline plugging device, which includes an airbag 1. A rotating rod 2 is rotatably connected inside the airbag 1. A pressing plate 3 located at the rear end of the airbag 1 is arranged at the rear end of the rotating rod 2. A connecting plate 4 located on the surface of the rotating rod 2 is fixedly installed at the front end of the airbag 1. The connecting plate 4 is threadedly connected with the rotating rod 2;

[0024] A fixing mechanism is arranged at the front end of the connecting plate 4. The fixing mechanism includes a square groove 5. The square groove 5 is opened at the front end of the connecting plate 4. There are four square grooves 5, and they are evenly distributed at the front end of the connecting plate 4. A vertical rod 6 is arranged inside the square groove 5. A sliding plate 7 is slidably connected to the surface of the vertical rod 6. A first limiting ring 10 is arranged at the center of one side of the connecting plate (4) where the square groove (5) is opened. The rotating rod (2) passes through the first limiting ring 10, and the surface of the rotating rod 2 is away from the inner wall of the first limiting ring 10 at a distance. A rotating disk 11 is fixedly installed at the front end of the first limiting ring 10. A sliding hole 12 is opened on the surface of the rotating disk 11. A contact block 8 located on the outer surface of the rotating disk 11 is fixedly installed at the front end of the sliding plate 7 away from the surface of the rotating rod 2, and the contact block 8 does not interfere with the rotating disk 11. A sliding block 9 located inside the sliding hole 12 is fixedly installed at the front end of the sliding plate 7 close to the surface of the rotating rod 2. The sliding block 9 can slide inside the sliding hole 12. A toothed ring 13 is arranged on the surface of the rotating disk 11. A second limiting ring 14 is rotatably connected inside the front end of the connecting plate 4. A gear 15 meshing with the toothed ring 13 is fixedly installed at the front end of the second limiting ring 14. A sliding rod 16 is arranged inside the gear 15.

[0025] Adopting the above scheme: By the operator putting the device into the oil and gas pipeline, first pull the sliding rod 16 forward to engage with the rotating disk 11, and then rotate the sliding rod 16. The sliding rod 16 can drive the gear 15 to rotate. Because the gear 15 meshes with the toothed ring 13, the gear 15 will drive the toothed ring 13 to rotate. During the rotation of the toothed ring 13, the sliding block 9 will move inside the sliding hole 12;

[0026] Since the sliding hole 12 is designed to be curved, when the sliding hole 12 rotates, the sliding block 9 will move upward. Then the sliding block 9 drives the sliding plate 7 to move on the surface of the vertical rod 6. Then the sliding plate 7 will drive the contact blocks 8 to move towards each other. Then the surface of the contact block 8 will contact the inner wall of the oil and gas pipeline, so as to fix the device inside the oil and gas pipeline;

[0027] Rotate the rotating rod 2. Since the rotating rod 2 is threadedly connected to the connecting plate 4, when the rotating rod 2 rotates, the rotating rod 2 will move forward. When the rotating rod 2 rotates and moves, since the inner dimensions of the first limiting ring 10 and the rotating disc 11 are larger than those of the rotating rod 2, they will not contact the surface of the rotating rod 2. Thus, when the rotating rod 2 rotates, the first limiting ring 10 and the rotating disc 11 will not interfere with the rotation and movement of the rotating rod 2. Then the rotating rod 2 will pull the pressing plate 3 to move. When the pressing plate 3 moves, it will squeeze the airbag 1 to cause deformation, and then the surface of the airbag 1 will fully fit the inside of the oil and gas pipeline, thereby blocking the oil and gas pipeline.

[0028] As Figure 5 and Figure 6 shown, it further includes a self-locking mechanism which is arranged at the front end of the connecting plate 4. The self-locking mechanism includes a circular groove 23 which is opened at the front end of the connecting plate 4. A connecting rod 17 located inside the circular groove 23 is fixedly installed at the rear end of the sliding rod 16. A limiting groove 18 is opened at the rear end inside the circular groove 23. A limiting block 19 located inside the limiting groove 18 is fixedly installed at the rear end of the connecting rod 17. A fixing ring 20 located on the surface of the connecting rod 17 is fixedly installed inside the circular groove 23. A connecting ring 21 is rotatably connected to the surface of the connecting rod 17. A spring 22 located on the surface of the connecting rod 17 is elastically connected between the fixing ring 20 and the connecting ring 21. A baffle is arranged at the front end of the slider 9, and the rear end of the baffle contacts the surface of the rotating disc 11. The slider 9 is designed as a cylinder.

[0029] With the above scheme: Through the design of the self-locking mechanism, when pulling the sliding rod 16, the sliding rod 16 will drive the connecting rod 17 to move, and then the connecting rod 17 will pull the limiting block 19 away from the inside of the limiting groove 18, thus canceling the self-locking. When the connecting rod 17 moves, the connecting ring 21 will move along, and then the spring 22 will be stretched. Then the sliding rod 16 can be rotated to make the gear 15 rotate. When the gear 15 rotates, the gear 15 will drive the second limiting ring 14 to rotate. Since the second limiting ring 14 is designed as a T shape, it can limit the gear 15 and enable the gear 15 to rotate stably. Then the connecting rod 17 and the limiting block 19 will also rotate along. After fixing the device inside the oil and gas pipeline, the sliding rod 16 can be released, and then the stretched spring 22 will pull the connecting ring 21 and the connecting rod 17 to reset, and then the limiting block 19 will re-enter the inside of the limiting groove 18, thus completing the self-locking. When the gear 15 is self-locked, the second limiting ring 14 will also be unable to rotate, enhancing the fixing effect of the device. Through the design of the slider 9, since a baffle is arranged at the front end of the slider 9, when the slider 9 moves inside the sliding hole 12, the baffle can limit the slider 9, thereby increasing the stability of the movement of the sliding plate 7 and the contact block 8.

[0030] As Figure 2 and Figure 6As shown, the sides of the contact block 8 away from the rotating disk 11 and the gear ring 13 are both arc-shaped designs, and the surface of the contact block 8 is rough. The surface of the sliding rod 16 is provided with bumps, and the surface of the sliding rod 16 fully fits inside the gear 15.

[0031] With the above solution: Through the design of the contact block 8, when the contact block 8 moves, since the contact block 8 has an arc-shaped design, its surface will fully fit the inner wall of the oil and gas pipeline. And the surface of the contact block 8 is rough, which can increase the friction with the oil and gas pipeline, thus improving the stability of fixation. Through the design of the sliding rod 16, when the sliding rod 16 is rotated, since the surface of the sliding rod 16 is provided with bumps, and then through the cooperation between the bumps and the sliding rod 16, it is convenient for the sliding rod 16 to drive the gear 15 to rotate.

[0032] As Figure 3 and Figure 6 shown, the first limiting ring 10 has a T-shaped design, and the first limiting ring 10 can rotate inside the connecting plate 4. The front end of the sliding rod 16 is provided with a handle, and the surface of the handle is rough.

[0033] With the above solution: Through the design of the first limiting ring 10, since the first limiting ring 10 has a T-shaped design, when the first limiting ring 10 rotates, it can limit the rotating disk 11 to prevent the position of the rotating disk 11 from shifting during rotation. Through the design of the sliding rod 16, the operator can hold the handle. Since the handle is rough, it will increase the friction with the palm, which is convenient for the operator to rotate the handle and make the sliding rod 16 rotate.

[0034] The working principle and usage process of the present utility model:

[0035] First, the operator places the device inside the oil and gas pipeline and pulls the handle. The handle drives the sliding rod 16 to move forward. The sliding rod 16 drives the connecting rod 17 and the limiting block 19 to move forward. The limiting block 19 will move away from the inside of the limiting groove 18, thus canceling the self-locking. When the connecting rod 17 moves, the spring 22 will be stretched. Rotate the handle, and then the sliding rod 16, the connecting rod 17, and the limiting block 19 will rotate accordingly. Then the sliding rod 16 will drive the gear 15 to rotate. The gear 15 will drive the rotating disk 11 to rotate. Then the slider 9 will move upward inside the sliding hole 12. The slider 9 will drive the sliding plate 7 and the contact block 8 to move towards each other. Then the surface of the contact block 8 will contact the inner wall of the oil and gas pipeline, so that the device can be fixed inside the oil and gas pipeline. After the fixing is completed, release the handle. Then the compressed spring 22 will pull the connecting rod 17 and the sliding rod 16 to reset. Then the limiting block 19 will re-enter the inside of the limiting groove 18, thus completing the self-locking. Then the rotating rod 2 can be rotated. Then the rotating rod 2 will move forward inside the connecting plate 4. Then the rotating rod 2 will pull the pressing plate 3 to move. The pressing plate 3 will squeeze the airbag 1 to cause it to deform. Then the surface of the airbag 1 will fully contact the inner wall of the oil and gas pipeline, so as to be able to block the oil and gas pipeline, and finally complete the operation process.

Claims

1. An oil and gas storage and transportation pipeline plugging device, comprising an airbag (1), characterized in that: A rotating rod (2) is rotatably connected inside the airbag (1). A pressing plate (3) located at the rear end of the airbag (1) is provided at the rear end of the rotating rod (2). A connecting plate (4) located on the surface of the rotating rod (2) is fixedly installed at the front end of the airbag (1). The connecting plate (4) is threadedly connected to the rotating rod (2). A fixing mechanism is provided at the front end of the connecting plate (4). The fixing mechanism includes a square groove (5) opened at the front end of the connecting plate (4). There are four square grooves (5), which are evenly distributed at the front end of the connecting plate (4). A vertical rod (6) is provided inside the square groove (5). A sliding plate (7) is slidably connected to the surface of the vertical rod (6). A first limiting ring (10) is provided at the center of one side of the connecting plate (4) where the square groove (5) is opened. The rotating rod (2) passes through the first limiting ring (10), and the surface of the rotating rod (2) is away from the inner wall of the first limiting ring (10). A rotating disc (11) is fixedly installed at the front end of the first limiting ring (10). A sliding hole (12) is opened on the surface of the rotating disc (11). A contact block (8) located on the outer surface of the rotating disc (11) is fixedly installed at the front end of the sliding plate (7) away from the surface of the rotating rod (2), and the contact block (8) does not interfere with the rotating disc (11). A slider (9) located inside the sliding hole (12) is fixedly installed at the front end of the sliding plate (7) close to the surface of the rotating rod (2). The slider (9) can slide inside the sliding hole (12). A toothed ring (13) is provided on the surface of the rotating disc (11). A second limiting ring (14) is rotatably connected inside the front end of the connecting plate (4). A gear (15) meshing with the toothed ring (13) is fixedly installed at the front end of the second limiting ring (14). A sliding rod (16) is provided inside the gear (15).

2. The pipeline plugging device for oil and gas storage and transportation according to claim 1, characterized in that: It further includes a self-locking mechanism designed at the front end of the connecting plate (4). The self-locking mechanism includes a circular groove (23) opened at the front end of the connecting plate (4). A connecting rod (17) located inside the circular groove (23) is fixedly installed at the rear end of the sliding rod (16). A limiting groove (18) is opened at the rear end inside the circular groove (23). A limiting block (19) located inside the limiting groove (18) is fixedly installed at the rear end of the connecting rod (17). A fixing ring (20) located on the surface of the connecting rod (17) is fixedly installed inside the circular groove (23). A connecting ring (21) is rotatably connected to the surface of the connecting rod (17). A spring (22) located on the surface of the connecting rod (17) is elastically connected between the fixing ring (20) and the connecting ring (21).

3. The pipeline plugging device for oil and gas storage and transportation according to claim 1, wherein: A baffle is provided at the front end of the slider (9), and the rear end of the baffle contacts the surface of the rotating disc (11). The slider (9) is designed as a cylinder.

4. The pipeline plugging device for oil and gas storage and transportation according to claim 1, characterized in that: Both sides of the contact block (8) away from the rotating disc (11) and the toothed ring (13) are designed as arcs, and the surface of the contact block (8) is rough.

5. The pipeline plugging device for oil and gas storage and transportation according to claim 1, wherein: The surface of the sliding rod (16) is provided with bumps, and the surface of the sliding rod (16) is fully attached to the inside of the gear (15).

6. The oil and gas storage and transportation pipeline plugging device according to claim 1, characterized in that: The first limiting ring (10) is of a T-shaped design, and the first limiting ring (10) can rotate inside the connecting plate (4).

7. The pipeline plugging device for oil and gas storage and transportation according to claim 1, characterized in that: The front end of the sliding rod (16) is provided with a handle, and the surface of the handle is of a rough design.

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