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Quick leakage repairing method for anticorrosive pipeline

A pipeline and leak-trapping technology, applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problems of increased maintenance frequency, disrupted production rhythm, short validity period, etc., to achieve good integration, prolong service life, patching fast effects

Inactive Publication Date: 2017-07-14
丁冲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Eliminate the phenomenon of "running, popping, dripping, and leaking" on site, and improve the health of equipment operation. The existing method to deal with leaks is to use a plugging agent to penetrate into the leak, which condenses quickly and expands when it meets water. It is simple, but the validity period is short. It can be effective for a short time, but it will leak after a long time, disrupting the production rhythm and increasing the frequency of maintenance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for quickly repairing leaks in anti-corrosion pipelines described in this embodiment comprises the following steps:

[0023] (1) Clean the inside of the pipeline, find the leak point, and dig the anti-corrosion layer near the leak point into a round hole with the leak point as the center. After exposing the inner wall of the pipe, clean and remove rust. The area of ​​the round hole is 4cm 2 ;

[0024] (2) Drill 5 small holes on the inner wall of the exposed pipe, the 5 small holes are arranged in a cross shape, the middle one is a through hole, and the other 4 are blind holes of 4mm, and tap the thread in the blind hole;

[0025] (3) PFA resin strips are arranged in blind holes;

[0026] (4) Prepare raw materials for repairing. The raw materials are mixed with ABS powder and PFA powder, of which ABS powder accounts for 74% by weight, and the raw materials are heated to 240°C to become semi-thick;

[0027] (5) Use a gun to preheat the pipe near the through hol...

Embodiment 2

[0034] A method for quickly repairing leaks in anti-corrosion pipelines described in this embodiment comprises the following steps:

[0035] (1) Clean the inside of the pipeline, find the leak point, and dig the anti-corrosion layer near the leak point into a round hole with the leak point as the center, and then clean and remove the rust after exposing the inner wall of the pipe. The area of ​​the round hole is 10cm 2 ;

[0036] (2) Drill 5 small holes on the inner wall of the exposed pipe, and the 5 small holes are arranged in a cross shape, the middle of which is a through hole, and the remaining 4 are 5mm blind holes, and tap in the blind holes;

[0037] (3) PFA resin strips are arranged in blind holes;

[0038] (4) Prepare raw materials for repairing. The raw materials are mixed with ABS powder and PFA powder, of which ABS powder accounts for 70% by weight, and the raw materials are heated to 250°C to become semi-thick;

[0039] (5) Use a gun to preheat the pipe near th...

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Abstract

The invention discloses a quick leakage repairing method for an anticorrosive pipeline. The quick leakage repairing method is characterized in that a mode of digging out and repairing again is adopted; the method is simple and effective, and is high in repairing speed, can complete leakage repairing by only needing more than half an hour, and is high in efficiency, so that the anticorrosive pipeline is long in service time and can be continuously used for 8-16 months; and an anticorrosive layer is good in quality and is wide in applicability. According to the quick leakage repairing method disclosed by the invention, ABS powder and PFA powder with a special proportion are taken as raw materials, any additive and plastic filler are not added during production, two raw materials are complementary in performance in a heating melting process, and are good in integration with the original anticorrosive layer; and leakage repairing points tightly fit to the original anticorrosive layer in the pipeline and the inner wall of the pipeline, and adhesive force is strong, so that the leakage repairing points, the original anticorrosive layer and the inner wall of the pipeline do not get loose and separate within a very long time, and therefore, impact resistance is improved, quality of the anticorrosive layer is improved, and the service life of the anticorrosive layer is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of petroleum pipelines, and in particular relates to a quick leakage repair method for anticorrosion pipelines. Background technique [0002] In oil production enterprises, large-scale anti-corrosion pipelines are widely used in various links. Most of the current anti-corrosion pipelines are steel parts, and the internal anti-corrosion coating is rolled or sprayed, and half of them are made of anti-corrosion plastics. Due to long-term contact with corrosive liquids such as acid and alkali Contact, various parts in the pipeline (or storage tank) may cause leakage for some reason. Eliminating medium leakage is an emergency repair work. It is necessary to quickly plug the leak to ensure that the leak is treated for a long time. It can function normally for a period of time. Of course, the fundamental method is to conduct a thorough overhaul of the leaking part if conditions permit. Eliminate the phenomenon of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/162
CPCF16L55/162
Inventor 丁冲
Owner 丁冲
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