Method for repairing and reinforcing fluid transportation pipeline without stopping production

A fluid transportation and pipeline technology, applied in the field of non-stop repair and reinforcement of fluid transportation pipelines, can solve problems affecting repair quality, pipe body deformation, cold brittleness, etc., to improve work efficiency, avoid fire and explosion, and shorten the repair period. Effect

Active Publication Date: 2019-07-19
马付林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the problems of uniform force transmission and performance matching between the pipe and the reinforced steel during welding are prone to hydrogen embrittlement and cold embrittlement, and local stress is likely to cause pipe deformation and other problems, which seriously affect the repair quality.

Method used

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  • Method for repairing and reinforcing fluid transportation pipeline without stopping production
  • Method for repairing and reinforcing fluid transportation pipeline without stopping production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see figure 1 , a method for non-stop production repair and reinforcement of a fluid delivery pipeline, the specific steps are as follows:

[0027] 1) Detect the defect position and size of the pipeline 1;

[0028] 2) Use all-metal plugging technology for the pipeline to do metal pressure plugging and repair on the perforated part, so that the surface to be repaired becomes a continuous metal surface, clean the surface of the part to be repaired in the pipeline 1, and use sandblasting to remove rust or explosion-proof The derusting machine removes rust, removes scale, loose rust, old coatings and dirt. After surface cleaning, the surface cleanliness reaches Sa3 level, and the surface roughness reaches Ry40-130μm;

[0029] 3) Apply 120 sizing agent to the part of the pipeline 1 to be repaired, and use the super metal repair agent to repair the perforation of the pipeline 1 and repair the parts that have lost strength due to corrosion and convexity. After natural curing, ...

Embodiment 2

[0034] see figure 1 , a method for non-stop production repair and reinforcement of a fluid delivery pipeline, the specific steps are as follows:

[0035] 1) Detect the defect position and size of the pipeline 1;

[0036] 2) Use all-metal plugging technology for the pipeline to do metal pressure plugging and repair on the perforated part, so that the surface to be repaired becomes a continuous metal surface, clean the surface of the part to be repaired in the pipeline 1, and use sandblasting to remove rust or explosion-proof The derusting machine removes rust, removes scale, loose rust, old coatings and dirt. After surface cleaning, the surface cleanliness reaches Sa3 level, and the surface roughness reaches Ry40-130μm;

[0037] 3) Apply 120 sizing agent to the part of the pipeline 1 to be repaired, and use the super metal repair agent to repair the perforation of the pipeline 1 and repair the parts that have lost strength due to corrosion and convexity. After natural curing, ...

Embodiment 3

[0042] see figure 1 , a method for non-stop production repair and reinforcement of a fluid delivery pipeline, the specific steps are as follows:

[0043] 1) Detect the defect position and size of the pipeline 1;

[0044]2) Use all-metal plugging technology for the pipeline to do metal pressure plugging and repair on the perforated part, so that the surface to be repaired becomes a continuous metal surface, clean the surface of the part to be repaired in the pipeline 1, and use sandblasting to remove rust or explosion-proof The derusting machine removes rust, removes scale, loose rust, old coatings and dirt. After surface cleaning, the surface cleanliness reaches Sa3 level, and the surface roughness reaches Ry40-130μm;

[0045] 3) Apply 120 sizing agent to the part of the pipeline 1 to be repaired, and use the super metal repair agent to repair the perforation of the pipeline 1 and repair the parts that have lost strength due to corrosion and convexity. After natural curing, i...

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Abstract

The invention discloses a method for repairing and reinforcing a fluid transportation pipeline without stopping production. The method comprises the following steps of (1) detecting the detect location and size of the pipeline; (2) carrying out metal tape pressure plugging repair for the perforated part of the pipeline; (3) brushing a soakage agent on the part to be repaired of the pipeline, adopting a high-temperature repair agent, and integrating with the steel pipe to form a repair layer after curing; (4) adopting fiber impregnated with high temperature resistant resin or fiber fabric at the part to be repaired of the pipeline for twining and pasting, and thus forming a reinforcement layer after curing; (5) adopting high strength fiber or fiber fabric to combine with a body material atthe outer part of the reinforcement layer for twining and reinforcing, and thus forming a reinforcing layer after curing; and (6) brushing high temperature resistant protective coating at the outer part of the reinforcing layer, and thus forming a protective layer after curing. The method is safe and reliable and has low repair cost and short repair period, the composite repair layer has excellentcorrosion resistance, the high temperature pipeline can be repaired and reinforced with stopping production, a lot of engineering monitoring time is saved, and the working efficiency is improved.

Description

technical field [0001] The invention relates to a defect repairing technology of a fluid conveying pipeline, in particular to a method for repairing and strengthening a fluid conveying pipeline without stopping production. Background technique [0002] With the rapid development of my country's industry, the use of pipelines to transport fluids is becoming more and more common. The increase in the types of mediums transported by pipelines and the increase in conveying temperature have resulted in the traditional anti-corrosion construction technology in pipelines becoming increasingly unable to meet the needs of the current actual situation. , Thinning of the pipe wall, perforation leakage or even pipe burst due to internal corrosion occurs from time to time, causing hidden dangers to safe production. [0003] In my country, the repair and repair of defective steel pipelines such as leakage and pipe wall thinning mostly adopt traditional hot-fire repair techniques such as ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/16
CPCF16L55/16
Inventor 马付林邱平由史华平佟海松杜妍马帅
Owner 马付林
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