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Method for rapidly repairing damage of directly-buried cable

A cable and damage technology, which is applied in the field of rapid repair of direct buried cable damage, can solve the problems of damaged cable structure, slow repair timeliness, and high repair cost, and achieve the effects of low cost, originality, and electrical insulation performance

Active Publication Date: 2021-03-09
西北水利水电工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method for quickly repairing the damage of direct-buried cables. The first purpose is to solve the problem of damage to the cable structure in the existing cable damage repair method; the second purpose is to solve the problems of slow repair time and high repair cost.

Method used

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  • Method for rapidly repairing damage of directly-buried cable
  • Method for rapidly repairing damage of directly-buried cable
  • Method for rapidly repairing damage of directly-buried cable

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0080] The first embodiment of the present invention is directed to a method of rapid repairing straight buried cables, including:

[0081] Find a fault point and excavate, determine the degree of damage to the cable, if it is damaged to the cable master insulation, then repair the original cable and does not cause the intermediate connector to repair damage; if only the outer surface of the cable outer sheath 1 is scratched, then Repair the scratches.

[0082] When the cable is only damaged by the outer sheath, there is no need to damage the original body structure of the cable, it is necessary to repair the outer sheath of the cable outer sheath to prevent water and moisture from entering the cable to cause the cable insulation.

[0083] When the cable is damaged to the main insulation, there is no need to cut the cable, simply repair the damaged phase insulation to prevent water and moisture from entering the cable to cause the cable insulation.

[0084] Compared with the origi...

no. 2 approach

[0086] If it is damaged to the cable master insulation, the damage is repaired under the premise of retaining the original cable and does not produce an intermediate joint, including:

[0087] S101. Find the fault point, center, excavate the trench, mount the bracket for supporting the cable in the trench, confirm that it is broken to the cable master insulation, carry out Next;

[0088] S102. Clean cable damage area and the damage area around the damaged area, remove sand and debris, wipe it with cleaning towel, stand dry;

[0089] S103. External sheath 1 surface graphite conductive coating is formed using a glass blade to scrape the damage area and the damage area.

[0090] The length of the damage area is: cover the damaged area;

[0091] The scraping length of the intact region around the damage area is: the left end of the damage area is the starting point, and the length of 400 mm is scraped to the left, and the right end of the damage area is the starting point, and the len...

no. 3 approach

[0126] In this embodiment, it is directed to a method of rapidly repairing a straight buried cable, and if only the outer surface of the cable outer sheath 1 is scratched, the scratches are repaired, including:

[0127] S201. Find a fault point and excavate, confirm that only the cable outer sheath 1 is damaged, and the next step;

[0128] S202. Cleaning the surface of the cable outer sheath 1;

[0129] S203. Judging the degree of damage of cable outer sheath 1, confirming that the insulating layer is not damaged, carrying the next step;

[0130] S204. Treatment of a good area around the damaged area and cleans the hair area;

[0131] S205. Clearing the graphite conductive coating around the damaged area and cleaned;

[0132] S206. Using high-pressure waterproof insulating composite tape with semi-winding method to uniformly winding the damage area and surrounding area, as a primary guard layer;

[0133] S207. Using a polytetrafluoride with a semi-winding method to uniformly wind ...

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Abstract

The invention provides a method for rapidly repairing the damage of a directly-buried cable, which is particularly suitable for repairing the damage of a cable outer sheath or the main insulation of the cable, the insulation sealing performance of the cable is recovered by using a high-voltage waterproof insulation composite adhesive tape in a semi-lapping manner, the mechanical damage resistanceof the cable is recovered by using an industrial armor wrapping tape, and the cable does not need to be cut off. The original main body structure of the cable does not need to be damaged, and only thedamaged part of the cable needs to be repaired to prevent water and moisture from entering the cable to cause insulation faults of the cable. Compared with a traditional repairing method, the high-voltage waterproof insulation composite adhesive tape is used for recovering the insulation sealing performance of the cable in a half-lap wrapping mode, the industrial armor wrapping tape is used for recovering the cable, rapidness and convenience are achieved, and the cost is low; no intermediate joint is generated, the primitiveness of the cable is ensured, and the original electrical insulationperformance of the cable is ensured; and only a fault point needs to be excavated, and the earth excavation amount is reduced.

Description

Technical field [0001] The present invention belongs to the technical field of wire and cable, and in particular, a method of rapid repairing straight buried cables. Background technique [0002] At present, the direct buried cable is in the construction process, and there is an unversable mechanical external force damage to the cable outer sheath when using mechanical equipment, and even cause damage to the main insulation of the cable, and the water and moisture are extremely easy to cause. The cable has an insulation failure. [0003] In order to repair the damaged cable, it is usually used to replace the overall cable or the production of intermediate joints. However, the method is not only slow, costly, and inevitably destroys the original cable structure, producing a new fault point. Inventive content [0004] The embodiment of the present invention provides a method of rapid repairing straight-buried cables, and its purpose is to solve the problem of destroying the cable ...

Claims

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Application Information

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IPC IPC(8): H02G1/16
CPCH02G1/16
Inventor 王银东任成荣王旭龙李旭郭建龙黄刚
Owner 西北水利水电工程有限责任公司
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