Pipeline blockage air bag with pressure relief function

Abstract

The utility model provides a pipeline blockage air bag with pressure relief function, including fixed pipe, the fixed pipe is equipped with water guide pipe, is equipped with first valve structure on water guide pipe, is equipped with air bag structure outside fixed pipe, is equipped with inflation and deflation pipe on air bag structure, is equipped with second valve structure on inflation and deflation pipe, is equipped with fixed seat at the joint of inflation and deflation pipe and air bag structure, is equipped with a plurality of roof support structure on fixed seat. Adopt above -mentioned structure, through the initiative pressure relief system that water guide pipe and first valve constitute, can automatically discharge water and reduce pressure when air bag pressure exceeds threshold value, and realizes double pressure monitoring with pressure gauge, three point formula even distribution's roof support structure combines the design of antiskid convex, forms the compound fixed mode of surface contact and point support, flexible adjustment adaptation, and the displacement ability improves, and double valve independent control system realizes inflation and deflation and pressure relief operation separation, can complete pressure release fast under emergency state.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and in particular to a pipeline blocking airbag with pressure relief function. Background Technology

[0002] Pipe plugging airbags, also known as water-sealing plugs, pipe sealing airbags, or pipe plugging devices, are tools used for sealing pipes. Their primary function is to seal specific sections of pipes during maintenance to facilitate emergency repairs or replacement of pipe components. Additionally, they can be used for pipe cleaning and repair, as well as for pipe testing after new pipeline construction or repairs to ensure pipeline safety.

[0003] In the installation, maintenance, and operation of existing pipe blockage airbags in water supply and drainage networks, if there is residual liquid upstream of the pipe or if the upstream valve is not tightly closed, the pipe at the blockage point will fill with liquid, putting pressure on the airbag. This pressure is especially high in areas with significant pipe drops. Therefore, the airbag may not completely seal properly, causing leaks and affecting operations, or the excessive pressure may cause the airbag to suddenly detach, posing a safety hazard. Summary of the Invention The technical problem to be solved by this utility model is to provide a pipe blockage airbag with pressure relief function. The active pressure relief system, which is composed of a water pipe and a first valve, can automatically drain water and reduce pressure when the internal pressure of the airbag exceeds a threshold. It can also be used with a pressure gauge to achieve dual pressure monitoring. The three-point evenly distributed top support structure combined with the anti-slip protrusion design forms a composite fixing mode of surface contact and point support, which can be flexibly adjusted and adapted, and improves the anti-displacement ability. The dual valve independent control system realizes the separation of inflation and deflation operations and pressure relief operations, and can quickly complete pressure release in emergency situations.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a pipe blockage airbag with pressure relief function, including a fixed pipe, a water guide pipe inside the fixed pipe, a first valve structure on the water guide pipe, an airbag structure outside the fixed pipe, an inflation / deflation pipe on the airbag structure, a second valve structure on the inflation / deflation pipe, a fixed seat at the connection between the inflation / deflation pipe and the airbag structure, and multiple support structures on the fixed seat.

[0005] In a preferred embodiment, there are no fewer than three supporting structures, and the supporting structures are evenly distributed on the fixed base around the center of the fixed base.

[0006] In a preferred embodiment, the top support structure includes a fixed rod connected to a fixed base. The fixed rod has an inner cavity with symmetrically arranged limiting grooves inside. The top of the inner cavity has a limiting installation port, which rotates with the positioning groove on the adjusting sleeve. The adjusting sleeve has an adjusting screw threadedly connected to it. The bottom of the adjusting screw has a limiting slider that mates with the limiting groove. The top of the adjusting screw has a top structure that mates with the inside of the pipe.

[0007] In a preferred embodiment, the top structure includes an anti-slip pad, which is hinged to a mounting seat mounted on an adjusting screw via a connecting seat.

[0008] In a preferred embodiment, the airbag structure is provided with multiple sets of anti-slip protrusions. In a preferred embodiment, a pressure gauge is provided on the inflation / deflation pipe.

[0009] In a preferred embodiment, the fixing tube is located on the side of the airbag structure away from the central axis.

[0010] The pipe plugging airbag with pressure relief function provided by this utility model has the following beneficial effects by adopting the above structure: (1) An active pressure relief system consisting of a water pipe and a first valve can automatically drain water and reduce pressure when the pressure inside the airbag exceeds a threshold, and can achieve dual pressure monitoring in conjunction with a pressure gauge; (2) The three-point evenly distributed top support structure combined with the anti-slip protrusion design forms a composite fixing mode of surface contact and point support, which can be flexibly adjusted and adapted, and improves the resistance to displacement. (3) The dual-valve independent control system separates the gas charging and depressurization operations, and can quickly release pressure in an emergency. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model and its use in conjunction with the pipeline.

[0012] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 4 This is a schematic diagram of the top support structure of this utility model.

[0015] In the diagram: 1. Fixed pipe; 2. Airbag structure; 3. Anti-slip protrusion; 4. Water guide pipe; 5. First valve structure; 6. Fixed seat; 7. Inflation / depression pipe; 8. Second valve structure; 9. Pressure gauge; 10. Top support structure; 11. Fixed rod; 12. Inner cavity; 13. Limiting groove; 14. Positioning mounting port; 15. Adjusting sleeve; 16. Positioning groove; 17. Adjusting screw; 18. Limiting slider; 19. Mounting seat; 20. Connecting seat; 21. Anti-slip rubber pad. Detailed Implementation

[0016] Example 1: like Figure 1-4In a pipeline blockage airbag with pressure relief function, there is a fixed pipe 1, a water guide pipe 4 is provided inside the fixed pipe 1, a first valve structure 5 is provided on the water guide pipe 4, an airbag structure 2 is provided outside the fixed pipe 1, an inflation / deflation pipe 7 is provided on the airbag structure 2, a second valve structure 8 is provided on the inflation / deflation pipe 7, a fixed seat 6 is provided at the connection between the inflation / deflation pipe 7 and the airbag structure 2, and a plurality of top support structures 10 are provided on the fixed seat 6.

[0017] In the preferred embodiment, there are no fewer than three support structures 10, which are evenly distributed around the center of the fixed base 6. This three-point evenly distributed support structure provides strong resistance to displacement.

[0018] In a preferred embodiment, the top support structure 10 includes a fixed rod 11 connected to the fixed base 6. The fixed rod 11 has an inner cavity 12, with symmetrically arranged limiting grooves 13 inside the inner cavity 12. A limiting mounting port 14 is provided at the top of the inner cavity 12, and the positioning mounting port 14 rotatably engages with a positioning groove 16 on the adjusting sleeve 15. An adjusting screw 17 with a threaded engagement is provided inside the adjusting sleeve 15. A limiting slider 18 engaging with the limiting groove 13 is provided at the bottom of the adjusting screw 14, and a top head structure engaging with the inside of the pipe is provided at the top of the adjusting screw 14. The spiral adjustment mechanism, combined with a hinged anti-slip pad, can adapt to pipe diameter deviations and allows for flexible adjustment.

[0019] In a preferred embodiment, the top structure includes an anti-slip pad 21, which is hinged to a mounting base 19 mounted on an adjusting screw 17 via a connecting seat 20. This provides stable support and strong adaptability.

[0020] In a preferred embodiment, the airbag structure 2 is provided with multiple sets of anti-slip protrusions 3, which enhance the anti-displacement effect of the supporting and sealing surface.

[0021] In a preferred embodiment, the inflation / deflation pipe 7 is equipped with a pressure gauge 9. Pressure monitoring is convenient, practical, and stable.

[0022] In a preferred embodiment, the fixing tube 1 is located on the side of the airbag structure 2 away from the central axis. It is located at the bottom of the tube for easy drainage of accumulated liquid.

[0023] Example 2: like Figure 1-4 First, insert the fixed pipe 1 axially into the pipe to be repaired, rotate the adjusting screw 17 to make the limiting slider 18 slide along the limiting groove 13, and when the anti-slip pad 21 contacts the pipe wall, continue to rotate the adjusting sleeve 15 until all three top support structures 10 generate a pre-tightening force of 5-8kN. Inject compressed air through the air charging and discharging pipe 7 and observe the pressure gauge 9 rise to 0.25MPa working pressure. When the pressure gauge shows an pressure exceeding 0.3 MPa, open the first valve 5 and the water pipe 4 to drain the overpressured water until the pressure drops to 0.2 MPa, then close the valve. Finally, open the second valve 8 to slowly exhaust air, rotate the adjusting screw in the opposite direction to release the top support constraint, and retract the airbag structure 2 and the fixed tube assembly in sequence.

[0024] Example 3: like Figure 1-4 The working principle of this utility model is as follows: the entire device is placed inside the pipe, the entire device is rotated, the position of the water guide pipe 4 is aligned with the bottom of the pipe, air is injected through the air inlet pipe 7 to inflate the airbag structure 2 and seal the pipe, then the second valve structure 8 is closed, the top support structure 10 is adjusted so that multiple top support structures 10 are pressed against the inner wall of the pipe to achieve a fixed position, and finally the first valve structure 5 is opened to control the operation of the water guide pipe 4 to control the amount of liquid accumulated on the inner wall of the sealed pipe.

[0025] The beneficial effects of this utility model are as follows: the active pressure relief system composed of the water pipe and the first valve can automatically drain water and reduce pressure when the internal pressure of the airbag exceeds the threshold, and achieve dual pressure monitoring with the pressure gauge; the three-point evenly distributed top support structure combined with the anti-slip protrusion design forms a composite fixing mode of surface contact and point support, which can be flexibly adjusted and adapted, and the anti-displacement ability is improved; the dual valve independent control system realizes the separation of inflation and deflation operations, and can quickly complete the pressure release in emergency situations.

Claims

1. A pipe-blocking airbag with pressure relief function, comprising a fixed tube (1), characterized in that: The fixed pipe (1) is provided with a water guide pipe (4), the water guide pipe (4) is provided with a first valve structure (5), the fixed pipe (1) is provided with an airbag structure (2), the airbag structure (2) is provided with an inflation / deflation pipe (7), the inflation / deflation pipe (7) is provided with a second valve structure (8), the connection between the inflation / deflation pipe (7) and the airbag structure (2) is provided with a fixed seat (6), and the fixed seat (6) is provided with multiple top support structures (10).

2. A pipe plugging airbag with pressure relief function according to claim 1, characterized in that: The plurality of top support structures (10) are not less than three, and the plurality of top support structures (10) are evenly distributed on the fixed seat (6) around the center of the fixed seat (6).

3. A pipe plugging airbag with pressure relief function according to claim 1, characterized in that: The top support structure (10) includes a fixed rod (11) connected to the fixed seat (6). The fixed rod (11) has an inner cavity (12). The inner cavity (12) is symmetrically provided with limiting grooves (13). The top of the inner cavity (12) is provided with a positioning installation port (14). The positioning installation port (14) is rotatably engaged with the positioning groove (16) on the adjusting sleeve (15). The adjusting sleeve (15) is provided with an adjusting screw (17) that is threadedly engaged with it. The bottom of the adjusting screw (17) is provided with a limiting slider (18) that engages with the limiting groove (13). The top of the adjusting screw (17) is provided with a top head structure that engages with the inside of the pipe.

4. A pipe plugging airbag with pressure relief function according to claim 3, characterized in that: The top structure includes an anti-slip pad (21), which is hinged to a mounting seat (19) on an adjusting screw (17) via a connecting seat (20).

5. A pipe plugging airbag with pressure relief function according to claim 1, characterized in that: The airbag structure (2) is provided with multiple sets of anti-slip protrusions (3).

6. A pipe plugging airbag with pressure relief function according to claim 1, characterized in that: The inflation / deflation pipe (7) is equipped with a pressure gauge (9).

7. A pipe plugging airbag with pressure relief function according to claim 1, characterized in that: The fixing tube (1) is located on the side of the airbag structure (2) away from the central axis.

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