Low pressure gas bladder closure

Abstract

The low-pressure gas balloon sealing head comprises a sealing balloon, an inflation assembly, a connecting assembly and a guiding assembly, the sealing balloon is composed of a balloon front pressing plate, a balloon body and a balloon rear pressing plate, the inflation assembly is composed of an inflation pipe, a ball valve, a pressure gauge, a connecting wire head A, a connecting wire head B and a connecting pipe, the connecting assembly is composed of a sealing device connecting sleeve, a vertical plate, a rotating pin shaft and a supporting plate, and the guiding assembly is composed of two guiding plates, a rotating shaft and a guiding pulley.The balloon sealing head adopts high-elasticity material, the surface of the balloon body is provided with a plurality of annular sealing protrusions, the sealing effect is enhanced to ensure that the balloon body is closely combined with the inner wall of the pipeline, different deformation conditions are adapted, the structure is compact and simplified, installation and dismounting are more convenient, the operation time is greatly shortened, a pressure monitoring assembly is installed at the same time, the sealing effect is monitored in real time, gas leakage is effectively prevented, and operation safety is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline repair and sealing equipment, specifically to a low-pressure gas gas airbag sealing head. Background Technology

[0002] During the maintenance, repair, and renovation of low-pressure gas pipelines, it is often necessary to seal the pipelines to ensure operational safety and prevent gas leaks. Traditional sealing methods, such as using simple plugs or baffles, have poor sealing performance and cannot meet the sealing requirements of low-pressure gas pipelines, easily leading to gas leaks and safety hazards. Existing airbag sealing devices suffer from problems such as complex structure, inconvenient operation, and unstable sealing effects. For example, some airbag sealing devices, after inflation, do not fit tightly against the inner wall of the pipeline, especially when the pipeline is deformed or irregular, failing to achieve an effective seal; other devices are cumbersome to install and disassemble, increasing operation time and costs. Utility Model Content

[0003] This invention provides a gasbag sealing head for low-pressure gas to solve the problems of complex structure, inconvenient operation and unstable sealing effect in the existing technology.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A low-pressure gas-filled gas plugging head includes a plugging gasbag, an inflation assembly, a connecting assembly, and a guiding assembly. The plugging gasbag consists of a front pressure plate, a gasbag body, and a rear pressure plate. The inflation assembly consists of an inflation pipe, a ball valve, a pressure gauge, connecting thread A, connecting thread B, and a connecting pipe. The connecting assembly consists of a plugging device connecting sleeve, a vertical plate, a rotating pin, and a support plate. The guiding assembly consists of two guide plates, a rotating shaft, and a guide roller. The plugging device connecting sleeve of the connecting assembly is connected to the main shaft of the plugging device, the vertical plate is connected to the plugging device connecting sleeve, and the support plate is connected to the vertical plate via a rotating pin. The airbag assembly is connected by a pivot pin. The support plate of the connecting component is connected to the front pressure plate of the airbag assembly by bolts. Several annular sealing protrusions are provided on the outer surface of the airbag body. The airbag body is installed between the front pressure plate and the rear pressure plate of the airbag. One end of the inflation tube of the inflation assembly is connected to the inside of the airbag body, and the other end of the inflation tube is connected to the inflation pump. A ball valve and a pressure gauge are set on the inflation tube. The two guide plates of the guide assembly are connected to the rear pressure plate of the airbag by bolts. The rotating shaft is fixed perpendicularly to the guide plates. A guide wheel is set between the two guide plates. The guide wheel is connected to the guide plates by the rotating shaft.

[0006] The airbag body is made of high-strength, heat-resistant, aging-resistant, and gas corrosion-resistant rubber material, and the shape of the airbag body is a cylinder that matches the inner diameter of the low-pressure gas pipeline.

[0007] The connection parts of the airbag front pressure plate, airbag body and airbag rear pressure plate are galvanized to prevent rust from corroding the rubber. The airbag body is pressed together with the airbag front pressure plate and airbag rear pressure plate by special equipment.

[0008] A straightening ring is installed on the surface of the plugging sleeve of the above-mentioned connecting assembly.

[0009] When using this device, firstly, select a suitable size low-pressure gas-filled gas plug head based on the inner diameter of the low-pressure gas pipeline to be plugged. The main shaft of the plug moves up and down, causing the vertical plate to move up and down.

[0010] The upright plate and support plate are connected by a rotating pin. The support plate is bolted to the front pressure plate of the airbag, and the rear pressure plate is bolted to the guide plate. A guide roller is located between the two guide plates, and the guide roller is connected to the guide plate by a rotating shaft. When the main shaft of the plug moves downward, it causes the upright plate to move downward. The downward movement of the upright plate causes the guide roller to rotate to the right, which in turn causes the plugging airbag to rotate to the right. After the upright plate contacts the bottom of the pipe, it stops moving, and the airbag assembly rotates 90° to be parallel to the pipe. Connect the inflation device to the inflation pipe 1 in the inflation assembly, start the inflation device, and open the ball valve to inflate the airbag assembly. When the airbag inflates to a tight seal with the inner wall of the pipe and reaches the specified pressure value, stop inflation and close the ball valve. The airbag assembly forms an effective seal with the inner wall of the pipe through the sealing protrusion, ensuring no gas leakage. A pressure gauge monitors the air pressure inside the airbag in real time to ensure operational safety.

[0011] This utility model of an airbag sealing head uses a highly elastic material. The surface of the airbag body is provided with several annular sealing protrusions to enhance the sealing effect and ensure a tight fit with the inner wall of the pipe. It adapts to different deformation conditions, has a compact and simplified structure, and makes installation and disassembly more convenient, greatly shortening the operation time. At the same time, a pressure monitoring component is installed to monitor the sealing effect in real time, effectively preventing gas leakage and improving operational safety. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the initial position of the device during use.

[0014] Figure 2 This is a schematic diagram of the device of this utility model when it is properly sealed.

[0015] In the diagram, 1 is the inflation tube, 2 is the ball valve, 3 is the pressure gauge, 4 is the connecting thread A, 5 is the connecting thread B, 6 is the connecting pipe, 7 is the sealing device connecting sleeve, 8 is the straightening ring, 9 is the upright plate, 10 is the rotating pin, 11 is the support plate, 12 is the front pressure plate of the airbag, 13 is the airbag body, 14 is the rear pressure plate of the airbag, 15 is the guide plate, 16 is the rotating shaft, and 17 is the guide roller. Detailed Implementation

[0016] like Figure 1 and Figure 2 As shown, a low-pressure gas-filled ... The assembly consists of a rotating shaft 16 and a guide roller 17. The plugging sleeve 7 of the connecting component is connected to the main shaft of the plugging device. A straightening ring 8 is installed on the surface of the plugging sleeve 7. The upright plate 9 is connected to the plugging sleeve 7. The support plate 11 is connected to the upright plate 9 via a rotating pin 10. The support plate 11 of the connecting component is connected to the airbag front pressure plate 12 of the airbag assembly via bolts. Several annular sealing protrusions are provided on the outer surface of the airbag body 13. The airbag body 13 is mounted on the airbag front pressure plate 12. Between the front pressure plate 12 and the rear pressure plate 14, the airbag body 13 is made of high-strength, heat-resistant, aging-resistant, and gas corrosion-resistant rubber material. The shape of the airbag body 13 is cylindrical and adapted to the inner diameter of the low-pressure gas pipeline. The connection between the front pressure plate 12, the airbag body 13, and the rear pressure plate 14 is galvanized to prevent rust and rubber corrosion. The airbag body 13 is crimped with the front pressure plate 12 and the rear pressure plate 14 using special equipment. The inflation tube of the inflation assembly... One end of the inflation tube 1 is connected to the inside of the airbag body 13, and the other end of the inflation tube 1 is connected to the inflation pump. The ball valve 2 and the pressure gauge 3 are set on the inflation tube. The inflation tube is connected to the sealing device cylinder through the connecting thread A4 and the connecting thread B5. The two guide plates 15 of the guide assembly are connected to the rear pressure plate 14 of the airbag by bolts. The rotating shaft 16 is fixed perpendicularly to the guide plate 15. The guide roller 17 is set between the two guide plates 15. The guide roller 17 is connected to the guide plate 15 through the rotating shaft 16.

[0017] When using this device, firstly, select a suitable size low-pressure gas gas bladder plugging head according to the inner diameter of the low-pressure gas pipeline to be plugged. The main shaft of the plugging device moves up and down, causing the vertical plate 9 to move up and down.

[0018] The upright plate 9 and the support plate 11 are connected by a rotating pin 10. The support plate is bolted to the front pressure plate of the airbag, and the rear pressure plate is bolted to the guide plate. A roller 17 is provided between the two guide plates 15, and the roller 17 is connected to the guide plate 15 by a rotating shaft 16. The downward movement of the main shaft of the plugger causes the upright plate 9 to move downward. The downward movement of the upright plate 9 causes the guide roller 17 to rotate to the right, which in turn causes the airbag assembly to rotate to the right. After the upright plate 9 contacts the bottom of the pipe, the upright plate stops moving, and the airbag assembly rotates 90° to be parallel to the pipe. The inflation pipe 1, ball valve 2, pressure gauge 3, connecting thread 4, connecting thread 5, and connecting pipe 6 constitute the inflation assembly. One end is connected to the inflation device, and the other end is connected to the airbag assembly. Connect the inflation device to the inflation pipe 1 in the inflation assembly, start the inflation device, and open the ball valve 2 to inflate the airbag assembly. When the airbag inflates to fit tightly against the inner wall of the pipe and reaches the specified air pressure value, stop inflation and close the ball valve 2. The airbag assembly forms an effective seal with the inner wall of the pipe through sealing protrusions, ensuring no gas leakage. Pressure gauge 3 monitors the air pressure inside the airbag in real time to ensure operational safety.

[0019] During the maintenance, repair, or modification of gas pipelines, after the sealing head is inflated, the sealing tightness is checked. If no leaks are detected, the corresponding work can proceed. During the operation, the pressure inside the gas bladder can be monitored by observing the pressure gauge to ensure stable pressure and maintain a good sealing effect.

Claims

1. A bladder closure head for low pressure gas service, characterized in that The system includes an occlusion airbag, an inflation assembly, a connecting assembly, and a guiding assembly. The occlusion airbag consists of a front pressure plate, an airbag body, and a rear pressure plate. The inflation assembly consists of an inflation tube, a ball valve, a pressure gauge, connecting thread A, connecting thread B, and a connecting pipe. The connecting assembly consists of an occluder connecting sleeve, a vertical plate, a rotating pin, and a support plate. The guiding assembly consists of two guide plates, a rotating shaft, and guide rollers. The occluder connecting sleeve of the connecting assembly is connected to the main shaft of the occluder, the vertical plate is connected to the occluder connecting sleeve, and the support plate is connected to the vertical plate via a rotating pin. The support plate of the connecting component is connected to the front pressure plate of the airbag assembly by bolts. Several annular sealing protrusions are provided on the outer surface of the airbag body. The airbag body is installed between the front pressure plate and the rear pressure plate of the airbag. One end of the inflation tube of the inflation component is connected to the inside of the airbag body, and the other end of the inflation tube is connected to the inflation pump. The ball valve and pressure gauge are set on the inflation tube. The two guide plates of the guide component are connected to the rear pressure plate of the airbag by bolts. The rotating shaft is fixed perpendicularly to the guide plates. A guide wheel is set between the two guide plates. The guide wheel is connected to the guide plate through the rotating shaft.

2. The low pressure gas bladder obturator of claim 1, wherein The airbag body is made of high-strength, heat-resistant, aging-resistant, and gas corrosion-resistant rubber material, and the shape of the airbag body is a cylinder that matches the inner diameter of the low-pressure gas pipeline.

3. The low pressure gas bladder obturator of claim 1, wherein The connection points of the airbag front pressure plate, airbag body, and airbag rear pressure plate are galvanized to prevent rust from corroding the rubber. The airbag body is formed by pressing the airbag front pressure plate and airbag rear pressure plate together with equipment.

4. The low pressure gas bladder obturator of claim 1, wherein A straightening ring is installed on the surface of the plugging sleeve of the connecting component.

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