On-line leakage blocking device for detachable natural gas pipeline

A natural gas pipeline, detachable technology, applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problems of easy corrosion of pipelines, natural gas leakage, waste of energy, etc., to improve reliability and safety , quick disassembly and assembly, and the effect of preventing explosion

Inactive Publication Date: 2019-08-30
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Natural gas transmission is characterized by hermetic continuity. The natural gas pipelines in old residential areas are often exposed to the air, and the pipelines are particularly prone to corrosion, which will lead to natural gas leakage.
If the leakage point cannot be plugged in time, it will not only waste energy, pollute the environment, but also cause safety accidents such as explosions.
The gas pipeline in this kind of community usually has only one valve in a building. If the valve is closed to prevent the leakage of natural gas, the emergency repair of the leak will cause the entire building to fail to supply gas and affect the normal life of residents.

Method used

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  • On-line leakage blocking device for detachable natural gas pipeline
  • On-line leakage blocking device for detachable natural gas pipeline
  • On-line leakage blocking device for detachable natural gas pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment one: the pipeline A20 position that needs repairing is as Figure 5 As shown, according to the diameter of the pipeline A20 to be repaired, the airbag 2 is selected, the bolt at the pipeline A20 is unscrewed, the front end of the present invention is put into the pipeline A20, and then the air compressor is manually operated to inflate the airbag 2. During the process, the air pressure gauge 15 can display the air pressure of the inflation. At this time, the air bag 2 gradually becomes larger and blocks the entire pipeline A20 under the action of the gas, thereby realizing the sealing of the pipeline A20. When the air pressure reaches the specified value of 3000pa, stop the inflation. Due to the action of the one-way valve B, the gas will not leak after stopping the inflation; the hand pushes the sleeve 6 to move forward, and the sleeve 6 acts on the rear end cover 5, the rear end The cover 5 squeezes the elastic support frame 3, so that the elastic support f...

Embodiment 2

[0025] Embodiment two: the pipeline B21 position that needs repairing is as Image 6 As shown, the difference between the present invention of Embodiment 2 and the present invention of Embodiment 1 is that the quick joint C9, the inner-to-outer joint C10 and the one-way valve B11 are removed. After the plugging is completed, the present invention does not affect the repair of the pipeline B21, so The air compressor can be removed, and the quick joint A18 to the front end cover 1 are all left in the pipeline A20 for plugging. At this time, the air pressure gauge 15 has the function of detecting the internal pressure of the present invention, and the plugging can be judged by observing the value of the air pressure gauge 15. Whether the leakage device leaks, the rest of the work process is exactly the same as that of Embodiment 1, and will not be described in detail here again.

[0026]The present invention is supplied with air by an air compressor. During work, the air compress...

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PUM

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Abstract

The invention relates to an on-line leakage blocking device for a detachable natural gas pipeline. The on-line leakage blocking device comprises a gas supply device, a gas transmission pipe arranged on the gas supply device, a one-way valve arranged on the gas transmission pipe and an air bag arranged at the end part of the gas transmission pipe; an air inlet pipe which is connected with and in communication with the gas transmission pipe is arranged in the air bag; an air pressure measuring device is arranged between the gas supply device and the gas transmission pipe; a supporting device isarranged in the air bag; and the intake of the air inlet pipe inflates the air bag, and the supporting device is unfolded and used for supporting the inflated air bag. According to the on-line leakageblocking device, double insurance of the one-way valve and a lock stopper is adopted to ensure the shape of the air bag so as to guarantee the leakage blocking effect, thereby greatly improving the reliability and the safety of the device; and the on-line leakage blocking device is reliable in leakage blocking for the gas pipeline, high in universality and reliable in operation.

Description

technical field [0001] The invention relates to a detachable online plugging device for natural gas pipelines, which is used for sealing and plugging natural gas pipelines and belongs to the technical field of gas pipeline plugging. Background technique [0002] Natural gas transmission is characterized by hermetic continuity. The natural gas pipelines in old communities are often exposed to the air, and the pipelines are particularly prone to corrosion, which will lead to natural gas leakage. If the leakage point cannot be plugged in time, it will not only waste energy, pollute the environment, but also cause safety accidents such as explosions. The gas pipeline in this kind of community usually has only one valve in a building. If the valve is closed to prevent the leakage of natural gas, the emergency repair of the leak will cause the entire building to fail to supply gas and affect the normal life of residents. Contents of the invention [0003] The technical problem ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/162
CPCF16L55/162
Inventor 张嘉钰牛虎利王渊邢佳洛
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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