Oil and gas leakage stoppage device

Abstract

The utility model relates to the technical field of pipeline leakage stoppage, and discloses an oil gas leakage stoppage device which comprises a protective cover, a sealing gasket and a connecting assembly. The protective cover is provided with a middle shaft hole and a filling opening which are communicated; the sealing gasket is arranged in the middle shaft hole, a sealing groove is formed between the sealing gasket and the hole wall of the middle shaft hole, and the sealing gasket is provided with an extending section extending to the outer side of the middle shaft hole. The connecting assembly comprises a first fixing ring, a second fixing ring and a connecting piece, the first fixing ring and the second fixing ring are buckled to the outer side of the extending section in the radial direction of the middle shaft hole, and the connecting piece is fixedly connected with the first fixing ring and the second fixing ring. After the first fixing ring and the second fixing ring are buckled, the extension section of the sealing gasket can be fastened on the oil and gas pipeline, so that the sealing gasket is connected with the damaged part of the oil and gas pipeline more tightly; sealing glue is injected into the middle shaft hole through the filling opening to be filled in the sealing groove, the sealing performance of the whole device can be improved, the sealing gasket can be isolated from external air, and the service life of the sealing gasket is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pipeline leak sealing technology, and in particular to an oil and gas leak sealing device. Background Technology

[0002] Substations contain numerous outdoor electrical devices. Due to prolonged operation, these devices are prone to aging of seals, leading to oil and gas leaks. The usual practice is to shut down the power supply. In general, this involves enhanced monitoring, appropriate oil and gas replenishment, and then waiting for a power outage for maintenance. However, in cases of severe oil or gas leaks, the power is shut down immediately. Once an oil or gas leak is discovered, the equipment poses a safety hazard, and the repeated replenishment of oil and gas increases the consumption of manpower.

[0003] In related technologies, when oil or gas leaks occur in pipelines, gaskets are typically used to seal the leaks. However, when gaskets are exposed to the outside environment for extended periods, they are subject to the effects of rain and humid air, which accelerates the aging of the rubber, causing it to lose its elasticity and sealing properties. This necessitates regular maintenance and repairs by repair personnel, which is time-consuming, labor-intensive, and significantly increases their workload. Utility Model Content

[0004] The purpose of this invention is to provide an oil and gas leakage plugging device to solve the problem that the sealing gaskets in the prior art will age faster when exposed to the outside environment when sealing the leakage.

[0005] To achieve the above objectives, this utility model provides an oil and gas leakage plugging device, including a protective cover, a sealing gasket, and a connecting assembly;

[0006] The protective cover has a central shaft hole through which an oil and gas pipeline passes axially. The protective cover is also provided with a filling port, which communicates with the central shaft hole and is used to inject sealant into the central shaft hole.

[0007] The sealing gasket is disposed in the central shaft hole, and the sealing gasket is used to be fitted on the outside of the oil and gas pipeline. A sealing groove is formed between the sealing gasket and the hole wall of the central shaft hole. The sealing gasket has an extension section that extends axially along the central shaft hole to the outside of the central shaft hole.

[0008] There are two sets of connecting components, which are respectively located at both ends of the protective cover along the axial direction of the central hole. Each connecting component includes a first fixing ring, a second fixing ring, and a connector. The first fixing ring and the second fixing ring are engaged with the outer side of the extension section along the radial direction of the central hole, and the connector is fixedly connected to the first fixing ring and the second fixing ring.

[0009] Optionally, the protective cover is provided with a filling chamber, the filling port is connected to the filling chamber, and the inner wall of the protective cover is also provided with a connecting hole connecting the filling chamber and the sealing groove.

[0010] Optionally, the filling chamber is an annular shape extending circumferentially around the central bore.

[0011] Optionally, there are multiple connecting holes, and the connecting holes are arranged in an array at intervals.

[0012] Optionally, the protective cover includes a first cover and a second cover that are radially engaged with each other along the central axis hole. The first cover and the second cover are provided with opposing connecting holes, and bolts are inserted into the connecting holes to connect the first cover and the second cover.

[0013] Optionally, the first cover and the second cover are further provided with guide holes on the inner wall of the central shaft hole. The guide holes extend radially along the central shaft hole. A guide post is also fixedly connected to the side of the sealing gasket away from the oil and gas pipeline. The guide post is used to be inserted into the guide hole.

[0014] Optionally, a spring is provided inside the guide hole, the bottom end of the spring is fixedly connected to the bottom of the guide hole, and the top end of the spring presses against the guide post.

[0015] Optionally, the sealing gasket includes a first gasket and a second gasket that engage with each other radially along the central shaft hole. The first gasket is disposed on the first cover, and the second gasket is disposed on the second cover. One of the first gasket and the second gasket is provided with a locking block, and the other is provided with a locking groove. Both the locking block and the locking groove extend axially along the central shaft hole. When the first gasket and the second gasket are engaged, the locking block is embedded in the locking groove.

[0016] Optionally, the first fixing ring and the second fixing ring are provided with opposing fixing blocks, and the connecting member is a threaded rod, which is threadedly engaged with the threaded hole to fix the first fixing ring and the second fixing ring.

[0017] Optionally, the protective cover is also fixedly provided with a connecting block, and the connecting piece is threadedly connected to the connecting block.

[0018] Compared with the prior art, the oil and gas leakage sealing device of this utility model has the following advantages: When sealing the leakage location of the oil and gas pipeline using a sealing gasket, the first fixing ring and the second fixing ring can be fastened to the extension section of the sealing gasket on the oil and gas pipeline after being fastened by the connector, which improves the stability of the sealing gasket installation, makes the connection between the sealing gasket and the damaged part of the oil and gas pipeline tighter, and prevents air from entering between the sealing gasket and the oil and gas pipeline, resulting in a better leak repair effect; Since a filling port communicating with the central shaft hole is provided on the protective cover, sealant can be injected into the central shaft hole through the filling port. The sealant fills the sealing groove between the sealing gasket and the hole wall of the central shaft hole, which not only improves the sealing performance of the entire device, but also isolates the sealing gasket from the outside air. Combined with the function of the protective cover, it can effectively reduce the long-term impact of rainwater and humid air on the sealing gasket, and extend the service life of the sealing gasket. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the oil and gas leakage plugging device of this utility model after being assembled with an oil and gas pipeline.

[0020] Figure 2 This is a schematic diagram of the structure of the oil and gas leakage plugging device of this utility model after the first cover and the first gasket are assembled.

[0021] Figure 3 This is a schematic diagram of the structure of the first cover of the oil and gas leakage plugging device of this utility model.

[0022] In the diagram, 1. Protective cover, 11. Central shaft hole, 12. Filling tube, 121. Filling port, 13. Filling chamber, 14. Connecting hole, 15. First cover, 16. Second cover, 17. Connecting hole, 18. Guide hole, 19. Connecting block, 2. Sealing gasket, 21. Extension section, 22. Guide post, 23. First gasket, 24. Second gasket, 25. Locking block, 26. Locking groove, 3. Connecting assembly, 31. First fixing ring, 32. Second fixing ring, 33. Connector, 34. Fixing block, 4. Sealing groove, 5. Bolt, 6. Spring, 7. Oil and gas pipeline. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] A preferred embodiment of the oil and gas leakage plugging device of this utility model is as follows: Figures 1 to 3As shown, the oil and gas leakage plugging device includes a protective cover 1, a sealing gasket 2, and a connecting assembly 3. The sealing gasket 2 is used to fit on the outside of the oil and gas pipeline 7 to seal the leakage of the oil and gas pipeline 7. The connecting assembly 3 is used to fix the sealing gasket 2 on the oil and gas pipeline 7. The protective cover 1 is used to cover the outside of the sealing gasket 2 to protect the sealing gasket 2 and extend its service life.

[0025] The protective cover 1 has a central axial hole 11 and a filling port 121. The central axial hole 11 extends along the central axis of the protective cover 1 and is used for the axial passage of the oil and gas pipeline 7, in which case the oil and gas pipeline 7 is coaxial with the protective cover 1. The filling port 121 communicates with the central axial hole 11 and is used for maintenance personnel to inject sealant into the central axial hole 11. The sealant can fill the space between the sealing gasket 2 and the protective cover 1, which not only increases the sealing performance of the entire leak-sealing device, but also isolates the sealing gasket 2 from the outside air, effectively solving the problem of the sealing gasket 2 being affected by rain and humid air for a long time, thus accelerating aging and affecting its service life.

[0026] In this embodiment, a filling tube 12 is fixedly connected to the protective cover 1, and the opening of the filling tube 12 forms a filling port 121. After the sealant is injected, a plug can be installed on the filling tube 12 to prevent sealant leakage and improve the sealing performance of the entire device. In other embodiments, a radial through hole can also be opened on the protective cover 1 to form the filling port 121.

[0027] The sealing gasket 2 is installed inside the central shaft hole 11. After the sealing gasket 2 is fitted onto the outside of the oil and gas pipeline 7, a sealing groove 4 is formed between the outer wall of the sealing gasket 2 and the hole wall of the central shaft hole 11. After the sealant is injected into the central shaft hole 11 through the filling port 121, the sealant fills the sealing groove 4 to prevent the sealing gasket 2 from being in long-term contact with the outside. The length of the sealing gasket 2 along the axial direction of the central shaft hole 11 is greater than the length of the protective cover 1 along the axial direction of the central shaft hole 11. After the sealing gasket 2 is fitted onto the oil and gas pipeline 7, each end of the sealing gasket 2 has an extension section 21 extending axially along the central shaft hole 11 to the outside of the central shaft hole 11. The extension section 21 is used to connect with the connecting assembly 3 to increase the stability of the installation of the sealing gasket 2.

[0028] There are two sets of connecting components 3, which are respectively disposed at both ends of the protective cover 1 along the axial direction of the central hole 11, to fix the extension sections 21 at both ends of the sealing gasket 2. In this embodiment, the two sets of connecting components 3 have the same structure, and only one set is described here as an example.

[0029] The connecting assembly 3 includes a first retaining ring 31, a second retaining ring 32, and a connector 33. Both the first retaining ring 31 and the second retaining ring 32 are semi-rings. They are radially engaged with the outer side of the extension section 21 along the central shaft hole 11, radially pressing against the extension section 21. The connector 33 securely connects the first retaining ring 31 and the second retaining ring 32, providing the compressive force that prevents the first retaining ring 31 and the second retaining ring 32 from detaching from the extension section 21.

[0030] The first fixing ring 31 and the second fixing ring 32 can tightly press the extension section 21 of the sealing gasket 2 onto the oil and gas pipeline 7, thereby improving the stability of the installation of the sealing gasket 2 and making the connection between the sealing gasket 2 and the oil and gas pipeline 7 tighter. This prevents air from seeping in through the gap between the sealing gasket 2 and the oil and gas pipeline 7, resulting in a better leak-proof effect of the sealing gasket 2.

[0031] When the oil and gas leak sealing device uses the sealing gasket 2 to seal the leak location of the oil and gas pipeline 7, the first fixing ring 31 and the second fixing ring 32 can be fastened to the extension section 21 of the sealing gasket 2 on the oil and gas pipeline 7 after being fastened by the connector 33, which improves the stability of the installation of the sealing gasket 2, makes the connection between the sealing gasket 2 and the damaged part of the oil and gas pipeline 7 tighter, and prevents air from entering between the sealing gasket 2 and the oil and gas pipeline 7, resulting in a good leak sealing effect. Since the protective cover 1 is provided with a filling port 121 that communicates with the central shaft hole 11, sealant can be injected into the central shaft hole 11 through the filling port 121. The sealant fills the sealing groove 4 between the sealing gasket 2 and the hole wall of the central shaft hole 11, which not only improves the sealing performance of the entire device, but also isolates the sealing gasket 2 from the outside air. With the help of the protective cover 1, it can effectively reduce the long-term impact of rain and humid air on the sealing gasket 2, and extend the service life of the sealing gasket 2.

[0032] In some embodiments, the protective cover 1 is provided with a filling chamber 13, the filling port 121 is connected to the filling chamber 13, and the inner wall of the protective cover 1 is also provided with a connecting hole 14 connecting the filling chamber 13 and the sealing groove 4.

[0033] A filling chamber 13 is provided inside the protective cover 1 between the filling port 121 and the sealing groove 4. The filling chamber 13 can temporarily store the sealant. The sealant in the filling chamber 13 can seep into the sealing groove 4 through the connecting hole 14, which improves the uniformity of sealant injection and avoids the existence of dead corners in the sealant injection.

[0034] In some embodiments, the filling chamber 13 is an annular ring extending circumferentially around the central bore 11.

[0035] The filling chamber 13 is annular and can extend throughout the entire circumference of the central shaft hole 11, covering the entire central shaft hole 11 and the sealing gasket 2, ensuring that the sealant is evenly distributed.

[0036] In some embodiments, there are multiple connecting holes 14, and the connecting holes 14 are arranged in an array at intervals.

[0037] The array-spaced connecting holes 14 allow sealant to enter the sealing groove 4 from each connecting hole 14, further reducing dead spots in the sealant application and ensuring that the sealant fills each position in the sealing groove 4, thereby improving the air isolation effect.

[0038] In some embodiments, the protective cover 1 includes a first cover 15 and a second cover 16 that are radially engaged with each other along the central hole 11. The first cover 15 and the second cover 16 are provided with opposing connecting holes 17, and bolts 5 are inserted into the connecting holes 17 to connect the first cover 15 and the second cover 16.

[0039] The protective cover 1 is formed by the snap-fitting of a first cover body 15 and a second cover body 16. This snap-fitting method makes it easier for the protective cover 1 to fit over the outer side of the sealing gasket 2. The first cover body 15 and the second cover body 16 are fixedly connected by bolts 5 inserted through connecting holes 17. Adjusting the bolts 5 increases the tightness of the connection between the first cover body 15 and the second cover body 16, ensuring a stable connection and improving the sealing performance of the sealing groove 4. In other embodiments, the first cover body 15 and the second cover body 16 can also be hinged at one end via a hinge shaft and fixedly connected at the other end via a snap-fit.

[0040] In this embodiment, the first cover 15 and the second cover 16 are both formed with flange-like structures at both ends along the axial direction of the central shaft hole 11. The upper and lower ends of the flange are provided with threaded holes perpendicular to the axial direction of the central shaft hole 11 to form connection holes 17. Bolts 5 are assembled in the threaded holes, and nuts are provided on the threads of the bolts 5 to increase the stability of the connection.

[0041] In some embodiments, the first cover 15 and the second cover 16 are further provided with guide holes 18 on the inner wall of the central shaft hole 11. The guide holes 18 extend radially along the central shaft hole 11. The sealing gasket 2 is also fixedly connected to the side away from the oil and gas pipeline 7. The guide holes 22 are used to be inserted into the guide holes 18.

[0042] After the sealing gasket 2 is installed on the oil and gas pipeline 7, the guide post 22 on the back side of the sealing gasket 2 extends axially along the central shaft hole 11. At this time, when the first cover 15 and the second cover 16 are covered on the sealing gasket 2, the first cover 15 and the second cover 16 can be limited by the fitting relationship between the guide post 22 and the guide hole 18, so as to ensure that the first cover 15 and the second cover 16 are pressed into a specific position of the sealing gasket 2.

[0043] When sealing the oil and gas pipeline 7, the sealing gasket 2 can be first connected to the first cover 15 and the second cover 16 as a whole through the guide post 22 and the guide hole 18, and then the whole assembly can be fitted onto the leak location of the oil and gas pipeline 7. In this embodiment, multiple guide holes 18 are evenly spaced along the circumference of the first cover 15 and the second cover 16, and the guide post 22 corresponds to the guide hole 18 one by one to increase the stability of the sealing gasket 2 assembly.

[0044] In some embodiments, a spring 6 is provided inside the guide hole 18, the bottom end of the spring 6 is fixedly connected to the bottom of the guide hole 18, and the top end of the spring 6 presses against the guide post 22.

[0045] A spring 6 is installed inside the guide hole 18 to press the guide post 22. The spring 6 applies a radial force to the guide post 22 along the central hole 11, and applies an elastic pressure to the local sealing gasket 2. The interaction between the guide post 22 and the hole wall of the guide hole 18 can be used to axially limit the sealing gasket 2, and the elastic constant pressure can be used to increase the local pressure between the sealing gasket 2 and the oil and gas pipeline 7, so as to ensure a tight seal between the sealing point and the oil and gas pipeline 7 and improve the sealing performance.

[0046] In some embodiments, the sealing gasket 2 includes a first gasket 23 and a second gasket 24 that are radially engaged with each other along the central shaft hole 11. The first gasket 23 is disposed on the first cover 15, and the second gasket 24 is disposed on the second cover 16. One of the first gasket 23 and the second gasket 24 is provided with a locking block 25 and the other is provided with a locking groove 26. Both the locking block 25 and the locking groove 26 extend axially along the central shaft hole 11. When the first gasket 23 and the second gasket 24 are engaged, the locking block 25 is embedded in the locking groove 26.

[0047] The sealing gasket 2 is formed by the fastening of the first gasket 23 and the second gasket 24. After the first gasket 23 and the second gasket 24 are fastened together, they can form a complete annular structure that covers the entire outer circumference of the oil and gas pipeline 7. At the same time, it is also convenient for the sealing gasket 2 to be fitted on the outside of the oil and gas pipeline 7.

[0048] The first gasket 23 and the second gasket 24 are provided with locking blocks 25 and locking grooves 26. When the first gasket 23 and the second gasket 24 are fastened together, the locking block 25 is embedded in the locking groove 26, which can increase the sealing performance of the first gasket 23 and the second gasket 24 at the fastening point and prevent sealant leakage. In this embodiment, the first gasket 23 is provided with a locking block 25 at one end and a locking groove 26 at the other end along the circumference of the central shaft hole 11. The second gasket 24 is provided with a locking block 25 at one end and a locking groove 26 at the other end along the circumference of the central shaft hole 11. The first gasket 23 and the second gasket 24 have the same structure and can be used interchangeably, which simplifies the manufacturing cost of the first gasket 23 and the second gasket 24 and facilitates replacement in the field.

[0049] In some embodiments, the first fixing ring 31 and the second fixing ring 32 are provided with opposing fixing blocks 34, and the connecting member 33 is a threaded rod, which is threadedly engaged with the threaded hole to fix the first fixing ring 31 and the second fixing ring 32.

[0050] Fixing blocks 34 are provided on the first fixing ring 31 and the second fixing ring 32 and are threadedly connected by a threaded rod. The fixing blocks 34 are located at both ends of the first fixing ring 31 and the second fixing ring 32, ensuring complete contact between the first fixing ring 31 and the second fixing ring 32 and the sealing gasket 2 throughout the entire circumference. When the threaded rod rotates, it connects with the threaded hole in the fixing block 34. The threaded structure can tighten the first fixing block 34 and the second fixing ring 32, improving the stability and sealing of the first gasket 23 and the second gasket 24. In this embodiment, a knob is also provided at one end of the threaded rod to facilitate maintenance personnel to apply force to the threaded rod.

[0051] In some embodiments, the protective cover 1 is also fixedly provided with a connecting block 19, and the connector 33 is threadedly connected to the connecting block 19.

[0052] A connecting block 19 is provided on the protective cover 1. After the connecting piece 33 is connected to the connecting block 19, the entire connecting assembly 3 and the protective cover 1 form an integral whole, which increases the stability of the connection between the connecting assembly 3 and the sealing gasket 2, and also limits the assembly position of the connecting assembly 3, ensuring that the connecting assembly 3 secures the extension section 21 of the sealing gasket 2.

[0053] The working process of this utility model is as follows:

[0054] In the first step, during use, the staff assembles the first cover 15 and the second cover 16 at the pipe leakage point to form a protective cover 1. At this time, the first gasket 23 and the second gasket 24 are attached to the pipe leakage point to seal it. The first cover 15 and the second cover 16 are installed together by bolts 5. Then, the knob is manually turned to drive the threaded rod to be threaded into the inner side of the two adjacent fixing blocks 34. This improves the stability of the installation of the first gasket 23 and the second gasket 24 through the first fixing ring 31 and the second fixing ring 32, making the sealing gasket 2 more tightly connected to the pipe damage point, and the leak repair effect is better.

[0055] The second step is to inject sealant through the filling tube 12 to fill the inner side of the filling chamber 13 and the sealing groove 4. This not only improves the sealing performance of the device, but also isolates the sealing gasket 2 from the outside air. Combined with the function of the protective cover 1, it can effectively solve the problem of the sealing gasket 2 being affected by rain and humid air from the outside for a long time, which accelerates aging and affects its service life.

[0056] In summary, this utility model provides an oil and gas leakage sealing device. When using a sealing gasket to seal the leak in an oil and gas pipeline, the first and second fixing rings, after being fastened together by a connector, can secure the extension of the sealing gasket to the oil and gas pipeline, improving the stability of the sealing gasket installation and making the connection between the sealing gasket and the damaged part of the oil and gas pipeline tighter. This prevents air from entering between the sealing gasket and the oil and gas pipeline, resulting in a good leak repair effect. Because a filling port communicating with the central shaft hole is provided on the protective cover, sealant can be injected into the central shaft hole through the filling port. The sealant fills the sealing groove between the sealing gasket and the hole wall of the central shaft hole, which not only improves the sealing performance of the entire device but also isolates the sealing gasket from the outside air. Combined with the function of the protective cover, it can effectively reduce the long-term impact of rainwater and humid air on the sealing gasket, extending the service life of the sealing gasket.

[0057] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A device for sealing oil and gas leaks, characterized in that, It includes a protective cover (1), a sealing gasket (2), and a connecting assembly (3); The protective cover (1) has a central shaft hole (11) through which the oil and gas pipeline (7) passes axially. The protective cover (1) is also provided with a filling port (121), which is connected to the central shaft hole (11). The filling port (121) is used to inject sealant into the central shaft hole (11). The sealing gasket (2) is disposed in the central shaft hole (11). The sealing gasket (2) is used to be fitted on the outside of the oil and gas pipeline (7). A sealing groove (4) is formed between the sealing gasket (2) and the hole wall of the central shaft hole (11). The sealing gasket (2) has an extension section (21) extending axially along the central shaft hole (11) to the outside of the central shaft hole (11). There are two sets of connecting components (3). The two sets of connecting components (3) are respectively located at both ends of the protective cover (1) along the axial direction of the central shaft hole (11). The connecting component (3) includes a first fixing ring (31), a second fixing ring (32) and a connector (33). The first fixing ring (31) and the second fixing ring (32) are engaged with the outer side of the extension section (21) along the radial direction of the central shaft hole (11). The connector (33) fixes the first fixing ring (31) and the second fixing ring (32). After the first fixing ring (31) and the second fixing ring (32) are connected, they seal the sealing groove (4).

2. The oil and gas leakage plugging device according to claim 1, characterized in that, The protective cover (1) is provided with a filling chamber (13), the filling port (121) is connected to the filling chamber (13), and the inner wall of the protective cover (1) is also provided with a connecting hole (14) connecting the filling chamber (13) and the sealing groove (4).

3. The oil and gas leakage plugging device according to claim 2, characterized in that, The filling chamber (13) is an annular shape extending circumferentially around the central hole (11).

4. The oil and gas leakage plugging device according to claim 2, characterized in that, There are multiple connecting holes (14), and each connecting hole (14) is arranged in an array at intervals.

5. The oil and gas leakage plugging device according to any one of claims 1-4, characterized in that, The protective cover (1) includes a first cover (15) and a second cover (16) that are radially engaged with each other along the central hole (11). The first cover (15) and the second cover (16) are provided with opposing connecting holes (17). Bolts (5) are inserted into the connecting holes (17) to connect the first cover (15) and the second cover (16).

6. The oil and gas leakage plugging device according to claim 5, characterized in that, The first cover (15) and the second cover (16) are also provided with guide holes (18) on the inner wall of the central shaft hole (11). The guide holes (18) extend radially along the central shaft hole (11). The sealing gasket (2) is also fixedly connected to a guide post (22) on the side away from the oil and gas pipeline (7). The guide post (22) is used to be inserted into the guide hole (18).

7. The oil and gas leakage plugging device according to claim 6, characterized in that, A spring (6) is provided inside the guide hole (18). The bottom end of the spring (6) is fixedly connected to the bottom of the guide hole (18), and the top end of the spring (6) presses against the guide post (22).

8. The oil and gas leakage plugging device according to claim 5, characterized in that, The sealing gasket (2) includes a first gasket (23) and a second gasket (24) that engage radially with each other along the central shaft hole (11). The first gasket (23) is disposed on the first cover (15), and the second gasket (24) is disposed on the second cover (16). One of the first gasket (23) and the second gasket (24) is provided with a locking block (25), and the other is provided with a locking groove (26). Both the locking block (25) and the locking groove (26) extend axially along the central shaft hole (11). When the first gasket (23) and the second gasket (24) are engaged, the locking block (25) is embedded in the locking groove (26).

9. The oil and gas leakage plugging device according to any one of claims 1-4, characterized in that, The first fixing ring (31) and the second fixing ring (32) are provided with opposing fixing blocks (34), and the connecting member (33) is a threaded rod, which is threadedly engaged with the threaded hole to fix the first fixing ring (31) and the second fixing ring (32).

10. The oil and gas leakage plugging device according to claim 9, characterized in that, The protective cover (1) is also fixedly provided with a connecting block (19), and the connecting piece (33) is threadedly connected to the connecting block (19).

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