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Self-protected under-pressure leakage plugging device and method for rushing to repair pipeline by using self-protected under-pressure leakage plugging device

A pressure plugging and self-protection technology, which is applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problems that it is difficult to ensure the clamping force of the seal, the chain cannot be continuously adjusted, and the requirements for the working space are high. Achieve good sealing, convenient independent construction, and improve safety

Active Publication Date: 2015-02-18
BEIJING GAS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the chain cannot be adjusted continuously, it is difficult to ensure the clamping force on the seal
[0006] The mechanical blockage emergency treatment technology has the following advantages: 1. No need to reduce pressure, and does not affect the user's gas supply; 2. The hot work is controllable and improves the safety factor; but it also has the following disadvantages: 1. The operation time is long; 2. , higher requirements for working space; 3, higher labor intensity
In the case of minor leaks in the general gas operation process, the cost of using this technology is relatively high, and the construction time is relatively long

Method used

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  • Self-protected under-pressure leakage plugging device and method for rushing to repair pipeline by using self-protected under-pressure leakage plugging device
  • Self-protected under-pressure leakage plugging device and method for rushing to repair pipeline by using self-protected under-pressure leakage plugging device
  • Self-protected under-pressure leakage plugging device and method for rushing to repair pipeline by using self-protected under-pressure leakage plugging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 , 3 , 4, 5, 6, 7, 8, see figure 1, a self-protection plugging device with pressure in the present invention includes a fixture 2, a leak-stopping plate 3 and a chain 4, the fixture 2 tightens the leak-stopping plate 3 on the pipeline 1 through the chain 4, and the fixture 2 is tightened by a screw structure Tighten the chain 4, and the leak-stopping plate 3 utilizes the ball lock structure to reduce the pressure on the leakage of the pipeline 1 on the leak-stopping plate 3.

[0055] see image 3 The fixture 2 includes a screw rod 21, a lifting plate 22, a sprocket 221, a guide rail 23, an upper cross frame 231, a lower cross frame 232 and a base 24. The fixture 2 is clamped on the pipeline 1 through the base 24, and the base 24 is fixed by The lower cross frame 232, the longitudinal guide rail 23, and the frame formed by the upper cross frame 231, the upper cross frame 231 and the lower cross frame 232 are rotatably connected with the upper and lower...

Embodiment 2

[0074] Such as figure 2 As shown, the difference between the present embodiment 2 and the embodiment 1 is that a self-protection leak plugging device with pressure is used to repair the pipeline when the leak plugging plate 3 is rotated 180° in the circumferential direction and the space is relatively narrow, including the following steps:

[0075] A. Thread the valve 32 of the plugging plate 3 to the adapter 33, and screw down the bolt 34 in the middle of the adapter 33, so that the bolt 34 pushes down the sealing ball 321 to open the ball lock;

[0076] B. Place the middle part of the plugging plate 3 on the leakage of the pipeline 1;

[0077] C. Engage the two sets of fixtures 2 with the chain grooves of the plugging plate 3 at the same side of the leakage of the pipeline 1;

[0078] D, utilize the sprocket wheel 221 to fix the two ends of the chain 4, and the chain 4 fixes the leak-stopping plate through the chain groove of the leak-stopping plate 3;

[0079] E. Tighten...

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Abstract

The invention discloses a self-protected under-pressure leakage plugging device and a method for rushing to repair a pipeline by using the self-protected under-pressure leakage plugging device, and relates to a pipeline leakage plugging device, in particular to a leakage plugging plate and a clamp for plugging leakage of a gas pipeline, as well as a rushing-to-repair method, and aims to provide a self-protected under-pressure leakage plugging device which is simple in structure, low in cost, simple and convenient to operate, high in environment adaption property and high in leakage plugging sealing property, does not need to stop pipeline conveying and can ensure the hooping force. The self-protected under-pressure leakage plugging device comprises a clamp (2), a leakage plugging plate (3) and a chain (4), wherein the clamp (2) is used for hooping the leakage plugging plate (3) through the chain (4) on a pipeline (1); the clamp (2) is used for tightening the chain (4) by virtue of a screw rod structure; the pressure at a leakage part of the pipeline (1) to the leakage plugging plate (3) is reduced by virtue of a ball locking structure.

Description

technical field [0001] The invention relates to a pipeline plugging device, in particular to a leak-stopping plate and fixture for gas pipeline leakage and a method for urgently repairing pipelines using the same. Background technique [0002] At present, the existing pressure plugging technology at home and abroad can be divided into two types according to the operation form: non-fired plugging and hot-fired plugging. [0003] According to different technical principles and methods, non-fire plugging can be divided into injection type plugging technology under pressure, bonding and sealing technology under pressure, top-tight sealing technology under pressure, etc. Non-fire plugging technology mainly refers to welding technology, which does not use open flames in the operation process, and has the advantages of safety, reliability, and easy operation. However, considering that the gas transmission and distribution pipelines are made of metal, the non-fired leakage plugging...

Claims

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Application Information

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IPC IPC(8): F16L55/17F16L55/18
CPCF16L55/171F16L55/18
Inventor 李夏喜霍志刚韩赞东邢琳琳田晓江罗强赵欣陈文利廖如超
Owner BEIJING GAS GRP
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