Leaking stoppage and sealing device for oil-gas long-distance pipeline

Abstract

The utility model relates to a leaking stoppage sealing device for an oil-gas long-distance pipeline in the technical field of pipeline leaking stoppage. The leaking stoppage sealing device comprises two fixed hoops and a tile-shaped sliding plate, wherein the two fixed hoops are respectively arranged on the front side and the rear side of a leaking point in a hooped mode in the pipeline conveying direction, and the tile-shaped sliding plate is arranged between the two fixed hoops and can rotate and slide left and right. The middle positions of the side walls of the sides, close to each other, of the two fixing hoops are each provided with a circle of sliding groove, the front end and the rear end of a tile-shaped sliding plate are slidably inserted into the two sliding grooves correspondingly, and a tile-shaped blocking plate capable of synchronously rotating and sliding along with the tile-shaped sliding plate is arranged between the inner side face of the tile-shaped sliding plate and the outer wall of the pipeline. The tile-shaped blocking plate is connected with the tile-shaped sliding plate through a follow-up screw, and a rubber gasket is connected to the surface of the side, facing the outer wall of the pipeline, of the tile-shaped blocking plate in a matched and glued mode. The device can effectively reduce the operation difficulty of pipeline leakage under-pressure plugging, is simple and quick to operate, is safe and tight in leakage point sealing, and can well assist maintenance personnel in completing the under-pressure plugging work of the oil-gas long-distance pipeline.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline leak sealing technology, specifically relating to a leak sealing device for long-distance oil and gas pipelines, which can be applied to live leak sealing operations in oil and gas pipelines. Background Technology

[0002] Long-distance oil and gas pipelines, also known as oil and gas long-distance pipelines, are crucial industrial energy and material transport pipelines. They are mainly laid in two ways: underground and above-ground. Regardless of the laying method, during long-term operation, there is a risk of leakage due to corrosion at weak or defective areas (such as pinholes). Once a leak occurs in an oil and gas long-distance pipeline, pipeline sealing and repair work must be carried out as quickly as possible to minimize energy waste and safety hazards. Existing pipeline sealing operations generally use two simple semi-circular clamps lined with rubber gaskets, which are directly tightened to the leak point using flange bolts. While this pipeline sealing device is simple, it becomes very difficult to tighten the clamps when the pipeline cannot be shut down and pressurized operations are required. Even closing and tightening the two semi-circular clamps is difficult, and during the sealing process, before the clamps are fully tightened, the pressurized leaking medium will spray out from the gap between the rubber gasket and the outer wall of the pipeline. Therefore, there is an urgent need to design a more convenient and tighter sealing device for oil and gas long-distance pipelines to help maintenance personnel better complete pipeline leak sealing work. Utility Model Content

[0003] In response to the above situation, this utility model provides a leak sealing device for long-distance oil and gas pipelines, which can greatly assist maintenance personnel in completing pipeline leak sealing work more conveniently.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A leak sealing device for a long-distance oil and gas pipeline includes two fixed clamps respectively positioned on the front and rear sides of the leak point along the pipeline transport direction, and a tile-shaped sliding plate that can rotate and slide left and right between the two fixed clamps; each of the two fixed clamps has a sliding groove in the middle of the side wall of the side closest to each other, and the front and rear ends of the tile-shaped sliding plate are slidably inserted into the interior of the two sliding grooves respectively; a tile-shaped plug plate that can rotate and slide synchronously with the tile-shaped sliding plate is provided between the inner side of the tile-shaped sliding plate and the outer wall of the pipeline; the tile-shaped plug plate and the tile-shaped sliding plate are connected to each other by a follower screw; and a rubber gasket is glued to the side surface of the tile-shaped plug plate facing the outer wall of the pipeline.

[0006] Furthermore, both of the fixed clamps are formed by locking and connecting two symmetric semi-circular clamps through flange screws, and rubber gaskets are respectively arranged between both of the fixed clamps and the outer wall of the pipeline in a matching manner.

[0007] Furthermore, both of the sliding grooves are circular ring grooves with a "U"-shaped cross-section, and the circular ring grooves are formed by butt-jointing and splicing two half-circular ring grooves respectively arranged on the side walls of the two semi-circular clamps.

[0008] Furthermore, the four corners of the tile-shaped sliding plate and the tile-shaped blocking plate are correspondingly supported and connected by four of the follower screws. Threaded through holes for passing through the follower screws are respectively formed at the four corners of the tile-shaped sliding plate, and threaded blind holes are respectively formed at the four corners of the outer side surface of the tile-shaped blocking plate.

[0009] Furthermore, a square-frame-shaped sealing soft edge is integrally formed on the front, rear, left, and right four edges of the side of the rubber gasket facing the outer wall of the pipeline, so as to form a sealed chamber between the middle part of the rubber gasket and the outer wall of the pipeline.

[0010] Furthermore, an internal threaded through hole coaxial with the sealed chamber is formed at the central positions of the rubber gasket, the tile-shaped blocking plate, and the tile-shaped sliding plate. An external threaded conduit or an external threaded plug that can be screwed in is arranged inside the internal threaded through hole; the external threaded conduit is used to guide the leakage medium inside the sealed chamber to be discharged outwards in a directional manner, and the external threaded plug is used to seal the threaded through hole after plugging the leakage point of the pipeline.

[0011] The utility model further includes other components that enable it to be used normally, which are all conventional means in the art. In addition, devices or components not defined in the utility model, such as semi-circular clamps, flange screws, and rubber gaskets, etc., all adopt the prior art in the art.

[0012] The beneficial effects of the utility model are as follows:

[0013] The leakage-blocking and sealing device for the long-distance oil and gas transportation pipeline provided by the utility model can effectively reduce the operation difficulty of plugging the pipeline leakage under pressure, the plugging operation is simpler and faster, time-saving and labor-saving, the situation that the leakage medium splashes everywhere can be avoided during the plugging process, the leakage point seal is safer and tighter, and it can well assist the maintenance personnel to complete the work of plugging the long-distance oil and gas transportation pipeline under pressure. Description of the Drawings

[0014] Figure 1 It is a schematic three-dimensional structure diagram of the leakage-blocking and sealing device for the long-distance oil and gas transportation pipeline in the embodiment.

[0015] Figure 2 For Figure 1Schematic cross-sectional structure diagram of the leak plugging and sealing device for oil and gas long-distance pipelines before leak plugging operation.

[0016] Figure 3 For Figure 1 Schematic cross-sectional structure diagram of the leak plugging and sealing device for oil and gas long-distance pipelines after leak plugging completion. Specific implementation manner

[0017] Next, the technical solution of the present utility model will be clearly and completely described in combination with specific embodiments. Obviously, the described embodiments are only partial embodiments of the present utility model, rather than all embodiments.

[0018] It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. indicating the orientation or position relationship are all based on the drawings shown, only for the convenience of description.

[0019] Embodiment

[0020] As Figure 1-3 shown, a leak plugging and sealing device for oil and gas long-distance pipelines includes two fixed clamps 3 respectively clamped on the front and rear sides of the leak point 2 along the conveying direction of the pipeline 1, and a tile-shaped sliding plate 4 that can rotate and slide left and right between the two fixed clamps; a circular sliding groove 5 is respectively opened at the middle position of the side walls of the two fixed clamps close to each other, and the front and rear ends of the tile-shaped sliding plate are respectively slidably inserted into the interiors of the two sliding grooves. A tile-shaped plugging plate 6 that can rotate and slide synchronously with the tile-shaped sliding plate is arranged between the inner side surface of the tile-shaped sliding plate and the outer wall of the pipeline. The tile-shaped plugging plate and the tile-shaped sliding plate are connected to each other through follow-up screws 7, and a rubber gasket 8 is adhesively bonded to the side surface of the tile-shaped plugging plate facing the outer wall of the pipeline. <[

[0021] Both of the two fixed clamps are formed by locking and connecting two symmetrical semi-circular clamps through flange screws 9, and rubber gaskets 10 are respectively arranged between the two fixed clamps and the outer wall of the pipeline.

[0022] Both of the two sliding grooves are circular ring grooves with a "C"-shaped cross-section, and the circular ring grooves are formed by docking and joining two half-circular ring grooves respectively opened on the side walls of the two semi-circular clamps.

[0023] The four corners of the tile-shaped sliding plate and the tile-shaped plugging plate are correspondingly supported and connected by the four follow-up screws. A threaded through hole 11 for passing through the follow-up screw is respectively opened at the four corners of the tile-shaped sliding plate, and a threaded blind hole 12 is respectively opened at the four corners of the outer side surface of the tile-shaped plugging plate.

[0024] The rubber gasket has a square-shaped sealing soft edge 13 integrally formed on the front, back, left and right edges of the side facing the outer wall of the pipe, so that the gap between the middle of the rubber gasket and the outer wall of the pipe forms a sealed chamber 14, which can be used as a pressure relief channel to guide the leakage medium to discharge.

[0025] The rubber gasket, the tile-shaped plug, and the tile-shaped slide plate are coaxially provided with an internal threaded through hole 15 that communicates with the sealed chamber. The interior of the internal threaded through hole can be used to fit a threaded external conduit 16 or an external threaded plug 17.

[0026] The external threaded conduit is used to guide the leaking medium inside the sealed cavity to drain out in a directional manner during the leak sealing operation. When guiding the leaking medium to drain out, a rubber hose 18 can be connected to the outer end of the external threaded conduit to control the discharge direction of the leaking medium and prevent the leaking medium from splashing everywhere.

[0027] The external threaded plug is used to seal the threaded through hole after sealing the pipeline leak. The external threaded plug is made of internal hexagon screw.

[0028] The working principle of this utility model is as follows:

[0029] When sealing leaks in long-distance oil and gas pipelines, first, place rubber gaskets inside the two fixed clamps, then position the movable clamps on both sides of the leak point. Next, insert a tile-shaped sliding plate into the sliding grooves of the two fixed clamps, simultaneously pressing the tile-shaped plug and its inner rubber gasket against the outer wall of the pipeline. At this point, the sealing soft edges of the rubber gasket can be slightly slid against the outer wall of the pipeline, ensuring it doesn't excessively interfere with the sliding of the tile-shaped sliding plate. Then, tighten the flange bolts of the two fixed clamps to secure them to the outer wall of the pipeline. Next, push the tile-shaped sliding plate to rotate left and right, causing the tile-shaped plug and rubber gasket to rotate and slide synchronously left and right via the follower screws until the rubber gasket... Continue pushing the tile-shaped sliding plate until the sealed chamber in the middle of the rubber gasket completely covers the pipe leak. At this point, the external threaded guide tube screwed into the internal threaded through hole connects with the sealed chamber of the rubber gasket and the pipe leak. The leaking medium is guided out and depressurized through the external threaded guide tube. Then, by tightening the four corner follower screws, the tile-shaped plug and the rubber gasket gradually press against the outer wall of the pipe, thus completing the sealing of the leak. At this point, the pressure relief function of the external threaded guide tube has disappeared. The external threaded guide tube can then be unscrewed, and the external threaded plug can be replaced and tightened to seal the internal threaded through hole. This completes one pipe leak sealing operation. The entire leak sealing process is more time-saving, labor-saving, convenient, and quick compared to existing technologies.

[0030] The technical solution of this utility model is not limited to the specific embodiments described above. Without departing from the scope and spirit of the described embodiments, many modifications and changes will be obvious to those skilled in the art. Any technical modifications made within the spirit and principles of this utility model shall fall within the protection scope of this utility model.

Claims

1. A leak-sealing device for long-distance oil and gas pipelines, characterized in that: It includes two fixed clamps respectively hoop-mounted on the front and rear sides of the leak point along the pipeline conveying direction, and a tile-shaped sliding plate that can rotate and slide left and right and is placed between the two fixed clamps; a sliding groove is respectively formed in the middle position of the side walls of the two fixed clamps on the side close to each other, and the front and rear ends of the tile-shaped sliding plate are respectively slidably inserted into the inside of the two sliding grooves. A tile-shaped blocking plate that can rotate and slide synchronously with the tile-shaped sliding plate is arranged between the inner side surface of the tile-shaped sliding plate and the outer wall of the pipeline. The tile-shaped blocking plate and the tile-shaped sliding plate are connected to each other by follower screws, and a rubber gasket is adhesively bonded to the side surface of the tile-shaped blocking plate facing the outer wall of the pipeline.

2. The oil and gas long-distance pipeline leak sealing device according to claim 1, characterized in that: Both of the two fixed clamps are formed by locking and connecting two symmetric semi-circular clamps with flange screws, and rubber gaskets are respectively arranged between the two fixed clamps and the outer wall of the pipeline.

3. The oil and gas long-distance pipeline leak sealing device according to claim 2, characterized in that: Both of the two sliding grooves are circular ring grooves with a "匚”-shaped cross section, and the circular ring grooves are formed by butt-joint and splicing of two half-circular ring grooves respectively formed on the side walls of the two semi-circular clamps.

4. The oil and gas long-distance pipeline leak sealing device according to claim 1, characterized in that: The four corners of the tile-shaped sliding plate and the tile-shaped blocking plate are correspondingly supported and connected by four follower screws. A threaded through hole for passing through the follower screw is respectively formed at the four corners of the tile-shaped sliding plate, and a threaded blind hole is respectively formed at the four corners of the outer side surface of the tile-shaped blocking plate.

5. The oil and gas long-distance pipeline leak sealing device according to claim 1, characterized in that: A sealed soft edge in the shape of a square frame is integrally formed on the front, rear, left and right four edges of the side of the rubber gasket facing the outer wall of the pipeline, so that a sealed chamber is formed between the middle part of the rubber gasket and the outer wall of the pipeline.

6. The oil and gas long-distance pipeline leak sealing device according to claim 5, characterized in that: An internal threaded through hole that is coaxially arranged with the center positions of the rubber gasket, the tile-shaped blocking plate and the tile-shaped sliding plate and is communicated with the sealed chamber is formed, and an external threaded conduit or an external threaded plug can be screwed into the internal threaded through hole.

Images