Gas recovery device for pipeline plugging

Abstract

The utility model discloses a gas recovery device for pipeline plugging, which relates to the technical field of pipeline plugging, and comprises a mounting pipe, a connecting pipe is fixedly arranged at the bottom end of the mounting pipe, a pipeline is arranged at the bottom end of the connecting pipe, a plugging leather collar is arranged in the mounting pipe, the plugging leather collar is of an annular structure, and the pipeline is arranged in the mounting pipe. And expansion air bags are arranged at the two ends of the interior of the plugging leather ring. According to the pipeline plugging device, the plugging leather collar is arranged, the plugging leather collar can be inserted into a pipeline to expand so as to plug the pipeline, the two expansion air bags are arranged in the plugging leather collar, the air pump is arranged between the two expansion air bags, and the air pump can extract air in the pipeline plugging process and convey the air into the expansion air bags; the expansion air bag is inflated to expand, the expansion air bag can open the plugging leather collar, and after pipeline construction is completed, the air pump can convey air in the expansion air bag into the pipeline again, so that waste of the pipeline is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline plugging, in particular to a gas recovery device for pipeline plugging. Background Technique

[0002] The pipeline pressure plugging technology is a special technology for in-service pipeline maintenance, repair and emergency repair, which is safe, economical, fast and efficient. It can complete operations such as pipeline replacement, displacement, valve replacement and branch line addition without interrupting the pipeline medium transportation. It can also quickly and safely repair the accident pipeline when the pipeline leaks and restore the pipeline operation. In the past, the traditional method for the emergency repair of pipeline sudden accidents had to stop the transportation, empty the pipeline and then carry out the repair or take some temporary remedial measures, which brought great potential safety hazards to the safe operation of the pipeline. The non-stop pressure plugging technology is safe, reliable and pollution-free. It not only does not affect the normal transportation of the pipeline, but also can ensure the safe, efficient and environmental protection connection of the new and old pipelines. The media applicable to the non-stop pressure plugging technology include non-strongly corrosive media such as petroleum, natural gas, water, ethylene, coal gas, medium-quality oil and aviation oil.

[0003] For example, a pressure pipeline plugging device with the publication number of CN210014132U includes a pipeline port and a pressurized airbag located inside the pipeline port. The characteristics are as follows: vertical external connection plates are respectively detachably connected to the two outer sides of the pipeline port end. The bottom end of the external connection plate is fixedly connected with a horizontal connection plate of Huaxing. A connection plate is arranged at the bottom of the horizontal connection plate. The external connection plate, the horizontal connection plate and the connection plate form a U-shaped structure. A conical limiting member is connected to the bottom end of the connection plate. The limiting member is located on the inner wall of the pipeline port end. An internal thread hole 1 is arranged at the top of the limiting member. Bolts 1 are respectively detachably connected to the two side walls of the pipeline port end. The bolt 1 horizontally passes through the external connection plate and the pipeline side wall in sequence and is threadedly connected with the limiting member. An internal thread hole 2 matching with the bolt 1 is arranged on one side of the limiting member. A chain is detachably connected between the two limiting members on both sides. The utility model is convenient for assembly and disassembly, can effectively limit the displacement of the pressurized airbag, and has high safety performance.

[0004] There are some problems in the actual application of the above technical solution. When sealing the pipeline, the original gas in the pipeline will leak due to the installation and removal of the airbag, which causes waste of gas on the one hand and affects the safety of the staff on the other hand.

[0005] Therefore, it is very necessary to invent a gas recovery device for pipeline plugging to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a gas recovery device for pipeline plugging to solve the problems put forward in the above background technique.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas recovery device for pipeline plugging, comprising a mounting tube, a connecting tube is fixedly provided at the bottom end of the mounting tube, a pipeline is provided at the bottom end of the connecting tube, a sealing leather ring is provided inside the mounting tube, the sealing leather ring is arranged in an annular structure, and expansion air bags are provided at both ends of the inner part of the sealing leather ring, an air pump is fixedly provided between the two expansion air bags, an exhaust pipe is fixedly provided at the input end of the air pump, an air hole is penetrated through the middle part of the sealing leather ring, a catheter is inserted into the interior of the air hole, and the catheter is fixedly provided at one end of the exhaust pipe, a sealing rib is fixedly provided at one end of the inner wall of the air hole, an air outlet pipe is fixedly provided at the output end of the air pump, and the air outlet pipe is provided inside the expansion air bag.

[0008] Preferably, a solenoid valve is fixedly provided in the middle of the air extraction pipe.

[0009] Preferably, a support rod is fixedly provided in the middle of the expansion airbag, and one end of the support rod is fixedly provided in the middle of the air pump, and a sealing cover is fixedly provided between the expansion airbag and the sealing leather ring.

[0010] Preferably, a connecting plate is fixedly provided at the top end of the expansion airbag located at the top, an electric push rod is fixedly provided at the top end of the connecting plate, and the electric push rod is fixedly provided at the top end of the mounting tube.

[0011] Preferably, a sealing ring with a circular structure is fixedly provided in the middle of both sides of the sealing leather ring, and the sealing ring corresponds to the pipeline.

[0012] Preferably, the sealing rib is arranged at the first section of the air hole away from the outer wall of the sealing leather ring, and the inner side of the sealing rib is arranged as an inclined structure.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model provides a sealing leather ring, which can be inserted into the pipeline and expanded to achieve the blocking of the pipeline. Two expansion air bags are provided inside the sealing leather ring, and an air pump is provided between the two expansion air bags. The air pump can extract gas in the pipeline blocking process and transport the gas to the expansion air bags, so that the expansion air bags are inflated and expanded, and the expansion air bags can expand the sealing leather ring to achieve the effect of blocking the pipeline. After the pipeline construction is completed, the air pump can transport the gas in the expansion air bags back to the pipeline to avoid waste of the pipeline.

[0015] 2. In the present utility model, by providing a sealing rubber ring, circular sealing rings are provided in the middle of both sides of the sealing rubber ring. During the process of the sealing rubber ring being expanded by the inflatable airbag, the sealing ring can be closely attached to the inner wall of the pipeline. The setting of the sealing ring can effectively increase the contact area between the sealing rubber ring and the pipeline, thereby achieving the purpose of improving the pipeline sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0017] Figure 2 It is a schematic cross-sectional view of the overall structure of the present utility model.

[0018] Figure 3 In the present utility model Figure 2 It is an enlarged schematic view of the structure at A in

[0019] Figure 4 It is a schematic diagram of the structure of the sealing rubber ring of the present utility model.

[0020] In the figure: 1, installation pipe; 2, connecting pipe; 3, pipeline; 4, sealing rubber ring; 5, inflatable airbag; 6, air pump; 7, exhaust pipe; 8, air hole; 9, conduit; 10, sealing rib; 11, air outlet pipe; 12, solenoid valve; 13, support rod; 14, sealing cover; 15, connecting plate; 16, electric push rod; 17, sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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 of 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.

[0022] The present utility model provides a gas recovery device for pipeline plugging as Figures 1-4 shown, which includes an installation pipe 1. A connecting pipe 2 is fixedly provided at the bottom end of the installation pipe 1. A pipeline 3 is provided at the bottom end of the connecting pipe 2. A sealing rubber ring 4 is provided inside the installation pipe 1. The sealing rubber ring 4 is arranged in a ring structure, and inflatable airbags 5 are provided at both ends inside the sealing rubber ring 4. By using an air pump 6 to extract the gas in the pipeline 3, the gas enters the inflatable airbag 5 through the air pump 6, and the inflatable airbag 5 is inflated and expanded;

[0023] Specifically, an air pump 6 is fixedly arranged between the two inflatable airbags 5, an air extraction pipe 7 is fixedly arranged at the input end of the air pump 6, an air hole 8 is penetrated through the middle of the sealing leather ring 4, a catheter 9 is inserted inside the air hole 8, and the catheter 9 is fixedly arranged at one end of the air extraction pipe 7, a sealing convex rib 10 is fixedly arranged at one end of the inner wall of the air hole 8, and an air outlet pipe 11 is fixedly arranged at the output end of the air pump 6, and the air outlet pipe 11 is arranged inside the inflatable airbag 5;

[0024] More specifically, the sealing rib 10 is arranged at the first section of the outer wall of the air hole 8 away from the sealing leather ring 4, and the inner side of the sealing rib 10 is arranged as an inclined structure, and a solenoid valve 12 is fixedly arranged in the middle of the exhaust pipe 7, and the solenoid valve 12 can control the on-off of the inside of the exhaust pipe 7 to limit the inflow and outflow of gas in the inflatable airbag 5;

[0025] In addition, a support rod 13 is fixedly provided in the middle of the expansion airbag 5, and one end of the support rod 13 is fixedly provided in the middle of the air pump 6, a sealing cover 14 is fixedly provided between the expansion airbag 5 and the sealing leather ring 4, a connecting plate 15 is fixedly provided at the top of the expansion airbag 5 located above, an electric push rod 16 is fixedly provided at the top of the connecting plate 15, and the electric push rod 16 is fixedly provided at the top of the mounting tube 1, and the electric push rod 16 can drive the sealing leather ring 4 to move up and down to achieve the sealing of the pipeline;

[0026] Moreover, a circular sealing ring 17 is fixedly provided in the middle of both sides of the sealing leather ring 4, and the sealing ring 17 corresponds to the pipe 3. When the sealing leather ring 4 is expanded by the inflatable airbag 5, the sealing ring 17 can fit tightly with the inner wall of the pipe 3. The setting of the sealing ring 17 can effectively increase the contact area between the sealing leather ring 4 and the pipe 3, thereby achieving the purpose of improving the sealing effect of the pipe 3.

[0027] Working principle of this utility model:

[0028] When the device is in use, the connecting pipe 2 is welded to the blocking position of the pipeline 3, and a drilling rig is installed inside the connecting pipe 2 to drill a hole in the pipeline 3, and then the installation pipe 1 is installed at the top of the connecting pipe 2. At this time, the electric push rod 16 and the connecting plate 15 drive the blocking leather ring 4 and the expansion airbag 5 to move downward until the blocking leather ring 4 is inserted into the interior of the pipeline 3, the solenoid valve 12 is opened, and the gas in the pipeline 3 is extracted by the air pump 6, so that the gas enters the expansion airbag 5 through the air pump 6, and the expansion airbag 5 is inflated to expand the blocking leather ring 4. The blocking leather ring 4 blocks the pipeline 3 after being expanded, and then the solenoid valve 12 is closed, and the pipeline remains blocked. After the pipeline is repaired, the solenoid valve 12 is opened, and the air pump 6 is started in reverse, so that the gas in the expansion airbag 5 is extracted and released into the pipeline 3 to realize the discharge of the gas. At this time, the blocking leather ring 4 recovers its deformation under the action of its own elasticity, and the blocking leather ring 4 can be taken out to complete the pipeline operation.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A gas recovery device for pipeline plugging, comprising a mounting pipe (1), characterized in that: A connecting tube (2) is fixedly provided at the bottom end of the installation tube (1), a pipeline (3) is provided at the bottom end of the connecting tube (2), a sealing leather ring (4) is provided inside the installation tube (1), the sealing leather ring (4) is arranged in an annular structure, and expansion air bags (5) are provided at both ends inside the sealing leather ring (4), an air pump (6) is fixedly provided between the two expansion air bags (5), an air pump (6) is fixedly provided at the input end of the air pump (6) with an exhaust pipe (7), an air hole (8) is provided through the middle of the sealing leather ring (4), a catheter (9) is inserted inside the air hole (8), and the catheter (9) is fixedly provided at one end of the exhaust pipe (7), a sealing rib (10) is fixedly provided at one end of the inner wall of the air hole (8), an air outlet pipe (11) is fixedly provided at the output end of the air pump (6), and the air outlet pipe (11) is provided inside the expansion air bag (5).

2. A gas recovery device for pipeline plugging according to claim 1, characterized in that: A solenoid valve (12) is fixedly arranged in the middle of the air extraction pipe (7).

3. A gas recovery device for pipeline plugging according to claim 2, characterized in that: A support rod (13) is fixedly arranged in the middle of the expansion airbag (5), and one end of the support rod (13) is fixedly arranged in the middle of the air pump (6). A sealing cover (14) is fixedly arranged between the expansion airbag (5) and the sealing leather ring (4).

4. A gas recovery device for pipeline plugging according to claim 3, characterized in that: A connecting plate (15) is fixedly arranged at the top end of the expansion airbag (5) located at the top, an electric push rod (16) is fixedly arranged at the top end of the connecting plate (15), and the electric push rod (16) is fixedly arranged at the top end of the mounting tube (1).

5. A gas recovery device for pipeline plugging according to claim 4, characterized in that: A circular sealing ring (17) is fixedly arranged in the middle of both sides of the sealing leather ring (4), and the sealing ring (17) corresponds to the pipeline (3).

6. A gas recovery device for pipeline plugging according to claim 5, characterized in that: The sealing convex rib (10) is arranged at the first section of the outer wall of the air hole (8) away from the sealing leather ring (4), and the inner side of the sealing convex rib (10) is arranged as an inclined structure.

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