Portable plugging device for gas pipeline

Abstract

The utility model relates to the technical field of pipeline plugging, and discloses a gas pipeline portable plugging device which comprises a sleeve, and an annular groove is formed in the side face of the sleeve. Through the arrangement of the sealing groove and the limiting groove, when the bolt is fastened, the interior of the annular air bag can be pressurized, the surface of the nitrile rubber annular block abuts against the inner wall and the exterior of a pipeline in a sealed mode, the sleeve can be rapidly fixed to the pipeline, then the surface of the ejector rod can abut against the surface of the sleeve through the fastening nut, and therefore the sleeve can be rapidly fixed. The sealing disc is driven to slide, the interior of the spherical air bag is pressurized and expanded, the interior of the pipeline can be quickly plugged, in the whole plugging process, only the bolt and the nut need to be rotated, and after the top seat is detached, the plugging device can be quickly connected with a flange plate of a temporary pipeline through the sleeve. A plurality of cumbersome operation steps are reduced, the working efficiency is remarkably improved, and especially in an emergency repair scene, plugging can be rapidly completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline plugging technical field more particularly to a kind of portable plugging device of gas pipeline. BACKGROUND

[0002] In the gas distribution system of city, whether it is laid in the ground or installed on the gas pipeline of ground, all are affected by outside and exist the danger of leakage, with the increasing demand of gas in production and life, the gas laying in city has been more and more, and the fault of gas pipeline also increases, which needs to be reconstructed, expanded and repaired to the gas pipeline in operation, and the gas pipeline plugging construction is accordingly generated.

[0003] When using the traditional plugging device, the sleeve for positioning needs to be fixed on the outside of the pipeline by bolt or direct welding first, then the gas bag is inflated to seal the inside of the pipeline, so as to achieve the effect of pipeline plugging, then the plugging device, the staff needs to fix the sleeve first during operation, whether it is bolted drilling, screwing bolt or welded welding operation, it needs to be completed according to specific process, and then the gas bag can be inflated, a series of separate operations consume a lot of time, and the sleeve fixing and gas bag inflation are two independent links, any link failure will affect the plugging effect, such as bolt slipping or virtual welding during bolt fixing, even if the gas bag is inflated normally, the plugging may fail due to unstable sleeve fixing, on the contrary, the gas bag inflation system fails, such as insufficient inflation or gas bag rupture, even if the sleeve is fixed well, it is also impossible to achieve effective plugging. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a kind of portable plugging device of gas pipeline to solve the problems in the above background.

[0005] The utility model provides following technical scheme: a gas pipeline convenient type plugging device, including sleeve, the lateral surface of sleeve is equipped with annular groove, the inner and outer wall of annular groove all is fixedly installed with annular air bag, the surface of annular air bag is fixedly connected with nitrile rubber annular block, the inside of sleeve is equipped with sealing groove, the inside sealing sliding connection of sealing groove has rubber seal ring, the surface equidistance fixed connection of rubber seal ring has the connecting plate, the inside fixed mounting of connecting plate has the locating bearing, the inner wall fixed connection of locating bearing has bolt, the outer surface screw thread of bolt is installed with nut, the lateral surface of sleeve is connected with the top seat, the inside of top seat is equipped with the limit groove, the inside sealing sliding connection of limit groove has sealing disc, the inside center of sealing disc is fixedly connected with the communicating pipe, the end surface fixed connection of communicating pipe away from sealing disc has the fixed seat, the surface fixed mounting of fixed seat away from communicating pipe has spherical air bag, the inner wall fixed connection of limit groove has the elastic rope, the inside sliding connection of top seat has the top rod.

[0006] Further, the end surface of the top rod is fixedly connected to the surface of the sealing disc, the end surface of the top rod away from the sealing disc abuts against the surface of the sleeve, the opposite surfaces of the sleeve and the top seat are provided with sealing pads, and the sleeve and the top seat are sealingly and closely connected together through the sealing pads.

[0007] Further, the end surface of the communicating pipe extends to the surface of the sealing disc, and the inside of the limit groove is in communication with the inside of the spherical air bag through the communicating pipe and the fixed seat.

[0008] Further, the outer surface of the spherical air bag is sealingly and closely connected to the inner wall of the pipeline, the number of the annular air bags and the nitrile rubber annular blocks is two, and the surfaces of the two nitrile rubber annular blocks are respectively sealingly and closely connected to the inner wall and the outer surface of the pipeline.

[0009] Further, under normal circumstances, the sealing disc slides to the direction close to the sleeve through the tension of the elastic rope, the surface of the sleeve is provided with a gas release hole in communication with the left end inside the sealing groove, and the outer surface of the sealing disc is fixedly provided with a sealing ring.

[0010] Further, the inside of the two annular air bags is in communication with the right end inside the sealing groove, the outer surface of the connecting plate is slidingly connected to the inside of the sleeve, and the outer surface of the bolt is screw-connected to the inside of the sleeve.

[0011] The utility model discloses the technical effect and advantage:

[0012] 1.The utility model discloses, through the sealing groove and the limiting groove are set up, when the fastening bolt, can pressurize inside annular air bag, make the surface of nitrile rubber annular block sealed and lean to the inner wall and outside of pipeline, can fasten the sleeve pipe on the pipeline, then through the fastening nut, can make the surface of the jacking rod lean to the surface of sleeve pipe, and drive sealing disc sliding, pressurize inside spherical air bag and expand, can fasten the inside of pipeline quickly, and the whole plugging process only needs to rotate bolt and nut, and after the top seat is dismantled, can be connected together through the sleeve pipe and the flange of temporary pipeline, compared with traditional plugging device, reduce a plurality of complicated operation steps, improve work efficiency significantly, especially in the emergency repair scene, can complete plugging quickly, control gas leakage.

[0013] 2.The utility model discloses through setting up nitrile rubber annular block, can strengthen the sealing of pipeline surface, can also increase the friction between the surface of pipeline, improve the firmness between sleeve pipe and pipeline, in addition, the whole plugging device simple structure design, this not only reduces the manufacturing cost, also makes it convenient to carry, whether it is in the conventional pipeline maintenance or emergency scene, can more conveniently play the role. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the structure schematic diagram after the utility model gas pipeline plugging;

[0015] Figure 2 It is Figure 1 transverse sectional view;

[0016] Figure 3 It is Figure 2 enlarged view of A in the figure;

[0017] Figure 4 It is the connection schematic diagram of connecting plate and locating bearing in the utility model.

[0018] The figure mark is: 1, sleeve pipe;2, annular groove;3, annular air bag;4, nitrile rubber annular block;5, sealing groove;51, air hole;6, rubber sealing ring;7, connecting plate;8, locating bearing;9, bolt;10, nut;11, top seat;12, limiting groove;13, sealing disc;14, communication pipe;15, fixed seat;16, spherical air bag;17, elastic rope;18, jacking rod. DETAILED DESCRIPTION

[0019] The utility model will be further explained in combination with specific embodiment, however, people skilled in the art should understand, the detailed description given in combination with the drawings is to explain better, the structure of the utility model is bound to exceed these limited embodiments, and for some equivalent alternative or common means, this paper does not make detailed description again, but still belongs to the protection scope of this application.

[0020] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0021] A convenient gas pipeline sealing device includes a sleeve 1. An annular groove 2 is formed on the side of the sleeve 1. Annular airbags 3 are fixedly installed on both the inner and outer walls of the annular groove 2. Nitrile rubber annular blocks 4 are fixedly connected to the surface of the annular airbags 3. A sealing groove 5 is formed inside the sleeve 1. A rubber sealing ring 6 is slidably connected inside the sealing groove 5. Connecting plates 7 are fixedly connected at equal intervals to the surface of the rubber sealing ring 6. A positioning bearing 8 is fixedly installed inside the connecting plate 7. Bolts 9 are fixedly connected to the inner wall of the positioning bearing 8. The outer surface of the bolts 9... A nut 10 is threaded on. A top seat 11 is fitted to the side of the sleeve 1. A limiting groove 12 is opened inside the top seat 11. A sealing disc 13 is slidably connected inside the limiting groove 12. A connecting pipe 14 is fixedly connected to the center of the sealing disc 13. A fixing seat 15 is fixedly connected to the end face of the connecting pipe 14 away from the sealing disc 13. A spherical airbag 16 is fixedly installed on the surface of the fixing seat 15 away from the connecting pipe 14. A tension rope 17 is fixedly connected to the inner wall of the limiting groove 12. A top rod 18 is slidably connected inside the top seat 11.

[0022] In this embodiment, by setting the sealing groove 5 and the limiting groove 12, when tightening the bolt 9, the internal pressure of the annular airbag 3 can be increased, so that the surface of the nitrile rubber annular block 4 seals against the inner wall and the outside of the pipe, and the sleeve 1 can be quickly fixed on the pipe. Then, by tightening the nut 10, the surface of the top rod 18 can be against the surface of the sleeve 1, and the sealing disc 13 can be slid, which increases the pressure and expands the internal pressure of the spherical airbag 16, and can quickly seal the inside of the pipe. The entire sealing process only requires turning the bolt 9 and the nut 10. After the top seat 11 is removed, it can be quickly connected to the flange of the temporary pipe through the sleeve 1. Compared with traditional sealing devices, it reduces many cumbersome operation steps and significantly improves work efficiency. Especially in emergency repair scenarios, it can quickly complete the sealing and control gas leakage.

[0023] Specifically, the end face of the push rod 18 is fixedly connected to the surface of the sealing disc 13, and the end face of the push rod 18 away from the sealing disc 13 abuts against the surface of the sleeve 1. Both the sleeve 1 and the top seat 11 are provided with sealing gaskets on their opposite surfaces, and the sleeve 1 and the top seat 11 are sealed together by the sealing gaskets.

[0024] In this embodiment, by setting a sealing gasket, the sealing between the sleeve 1 and the top seat 11 can be enhanced, ensuring the internal sealing. Combined with the sealing of the spherical airbag 16, a secondary sealing is achieved.

[0025] Specifically, the end face of the connecting pipe 14 extends to the surface of the sealing disc 13, and the interior of the limiting groove 12 is connected to the interior of the spherical airbag 16 through the connecting pipe 14 and the fixing seat 15.

[0026] In this embodiment, since the end face of the connecting pipe 14 extends to the surface of the sealing disc 13, the communication between the sealing disc 13 and the interior of the spherical airbag 16 can be guaranteed.

[0027] Specifically, the outer surface of the spherical airbag 16 is sealed and attached to the inner wall of the pipe, and there are two annular airbags 3 and two nitrile rubber annular blocks 4. The surfaces of the two nitrile rubber annular blocks 4 are sealed and attached to the inner wall and outer surface of the pipe, respectively.

[0028] In this embodiment, by setting the nitrile rubber annular block 4, the sealing performance with the pipe surface can be enhanced, and the friction between the sleeve 1 and the pipe surface can be increased, thereby improving the firmness between the sleeve 1 and the pipe.

[0029] Specifically, under normal conditions, the tension of the elastic rope 17 causes the sealing disc 13 to slide closer to the sleeve 1. The surface of the sleeve 1 is provided with a vent hole 51 that communicates with the left end of the sealing groove 5. A sealing ring is fixedly installed on the outer surface of the sealing disc 13.

[0030] In this embodiment, by setting a sealing ring, the sealing performance of the sealing disc 13 sliding inside the limiting groove 12 can be enhanced.

[0031] Specifically, the interiors of the two annular airbags 3 are connected to the right end of the interior of the sealing groove 5, the outer surface of the connecting plate 7 is slidably connected to the interior of the sleeve 1, and the outer surface of the bolt 9 is threadedly connected to the interior of the sleeve 1.

[0032] In this embodiment, by setting two annular airbags 3, the inside and outside of the pipeline can be sealed simultaneously.

[0033] The working principle and usage process of this utility model are as follows: In use, the sleeve 1 is fitted onto the outside of the pipe, and the pipe opening is inserted into the annular groove 2. Then, by rotating the bolt 9, the connecting plate 7 slides away from the pipe. At this time, the right end of the sealing groove 5 is pressurized, and the annular airbag 3 is also pressurized, causing the surfaces of the two nitrile rubber annular blocks 4 to tightly adhere to the inner and outer surfaces of the pipe. The sleeve 1 is then fixed to the pipe. Next, the nut 10 is tightened, and the end face of the push rod 18 abuts against the surface of the sleeve 1. The push rod 18 then drives the sealing disc 13 to slide to the right. At this time, the limiting groove... The right end of the 12 is under high pressure, and the spherical airbag 16 is pressurized through the connecting pipe 14 and the fixed seat 15. After the spherical airbag 16 is inflated, the surface of the spherical airbag 16 seals against the inner wall of the pipe, which can quickly seal the inside of the pipe. The entire sealing process only requires turning the bolt 9 and the nut 10. After the top seat 11 is removed, it can be quickly connected to the flange of the temporary pipe through the sleeve 1. Compared with traditional sealing devices, it reduces many cumbersome operation steps and significantly improves work efficiency. Especially in emergency repair scenarios, it can quickly complete the sealing and control gas leakage.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A convenient gas pipeline sealing device, comprising a sleeve (1), characterized in that: The sleeve (1) has an annular groove (2) on its side. An annular airbag (3) is fixedly installed on both the inner and outer walls of the annular groove (2). A nitrile rubber annular block (4) is fixedly connected to the surface of the annular airbag (3). A sealing groove (5) is provided inside the sleeve (1). A rubber sealing ring (6) is slidably connected inside the sealing groove (5). A connecting plate (7) is fixedly connected at equal intervals to the surface of the rubber sealing ring (6). A positioning bearing (8) is fixedly installed inside the connecting plate (7). A bolt (9) is fixedly connected to the inner wall of the positioning bearing (8). A nut (10) is threaded onto the outer surface of the bolt (9). The sleeve (1) is fitted with a top seat (11) on its side. A limiting groove (12) is opened inside the top seat (11). A sealing disc (13) is slidably connected inside the limiting groove (12). A connecting pipe (14) is fixedly connected at the center of the sealing disc (13). A fixing seat (15) is fixedly connected to the end face of the connecting pipe (14) away from the sealing disc (13). A spherical airbag (16) is fixedly installed on the surface of the fixing seat (15) away from the connecting pipe (14). A tension rope (17) is fixedly connected to the inner wall of the limiting groove (12). A top rod (18) is slidably connected inside the top seat (11).

2. The convenient gas pipeline sealing device according to claim 1, characterized in that: The end face of the top rod (18) is fixedly connected to the surface of the sealing disc (13). The end face of the top rod (18) away from the sealing disc (13) abuts against the surface of the sleeve (1). The opposite surfaces of the sleeve (1) and the top seat (11) are provided with sealing gaskets. The sleeve (1) and the top seat (11) are sealed together by the sealing gaskets.

3. A convenient gas pipeline sealing device according to claim 1, characterized in that: The end face of the connecting pipe (14) extends to the surface of the sealing disc (13), and the interior of the limiting groove (12) is connected to the interior of the spherical airbag (16) through the connecting pipe (14) and the fixing seat (15).

4. A convenient gas pipeline sealing device according to claim 1, characterized in that: The outer surface of the spherical airbag (16) is sealed and attached to the inner wall of the pipe. There are two annular airbags (3) and two nitrile rubber annular blocks (4). The surfaces of the two nitrile rubber annular blocks (4) are sealed and attached to the inner wall and outer surface of the pipe, respectively.

5. A convenient gas pipeline sealing device according to claim 1, characterized in that: Under normal conditions, the sealing disc (13) is slid towards the sleeve (1) by the tension of the elastic rope (17). The surface of the sleeve (1) is provided with a vent hole (51) that communicates with the left end of the sealing groove (5). A sealing ring is fixedly installed on the outer surface of the sealing disc (13).

6. A convenient gas pipeline sealing device according to claim 1, characterized in that: The interiors of the two annular airbags (3) are connected to the right end of the interior of the sealing groove (5), the outer surface of the connecting plate (7) is slidably connected to the interior of the sleeve (1), and the outer surface of the bolt (9) is threadedly connected to the interior of the sleeve (1).

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