High-voltage cable single-phase dry-packaging repair method

A high-voltage cable and repair method technology, applied in the direction of insulation/armored cable repair equipment, etc., can solve the problems of low repair efficiency, low service life, high cable cost, etc., to save manpower, material and financial resources, increase service life, and flexible repair convenient effect

Inactive Publication Date: 2018-08-31
RIZHAO PORT
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The skin of the original high-voltage cable hardens after being used for a period of time, and the newly added cable is relatively softer than the original cable. The connection size of the new cable has strict requirements and is difficu

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-voltage cable single-phase dry-packaging repair method
  • High-voltage cable single-phase dry-packaging repair method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Such as figure 1 As shown, the high-voltage cable single-phase dry package repair method of the present invention, when the high-voltage cable is single-phase grounded, the damaged cable is repaired separately. First, the single-phase faulty cable needs to be pre-processed, specifically including the following steps:

[0026] 1. Strip off the outer sheath 7 of the faulty cable by 640mm;

[0027] 2. Measure from the root of the outer sheath 7, leave 50mm steel armor 6 at both ends, tie it tightly with copper binding wire, and strip off the remaining steel armor 6;

[0028] 3. Retain 50mm inner sheath 5 at both ends of the faulty cable, and strip off the rest of the inner sheath 5;

[0029] 4. Leave 300mm copper shielding 4 at both ends of the faulty cable, and strip off the rest of the copper shielding 4;

[0030] 5. Leave 150mm semi-conductive layer 3 at both ends of the faulty cable, and strip off the remaining semi-conductive layer 3;

[0031] 6. Select the appropr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of high-voltage cable repair, particularly a high-voltage cable single-phase dry-packaging repair method. The repair method is characterized by comprisingthe following steps of 1) performing earlier stage processing on a single-phase faulty cable: stripping off a faulty cable outer sheath, reserving a part of steel armor at the two ends of the faulty cable, reserving a part of inner sheath at the two ends of the faulty cable, reserving a part of copper shielding part at the two ends of the faulty cable, reserving a part of semi-conductive layer atthe two ends of the faulty cable, stripping out a cable wire core, and cutting the two ends of a main insulating layer to form chamfers; and 2) performing recovery on the processed faulty cable: performing crimping on the single-phase faulty cable by a copper connecting pipe, wrapping the copper connecting pipe with a layer of semiconductor band in a half-overlaying manner, recovering the main insulating part, recovering the semiconductor, winding the cable by an armored band to recover the outer sheath, and performing high-voltage holding test and insulation resistance test on the recovered cable. By virtue of the repair method, manpower and material resources are saved, the flexible and rigid cables can be combined more tightly, the service life of the recovered cable can be prolonged, and the cable is more durable.

Description

technical field [0001] The invention relates to the technical field of high-voltage cable repair, in particular to a method for repairing a single coherent packet of a high-voltage cable. Background technique [0002] When the existing high-voltage cables are damaged and faulty, the demand for power supply is seriously affected. How to quickly repair and prolong the service life of the repaired part is an urgent problem to be solved. In the prior art, when a single-phase grounding or other damage occurs to a 6 to 10kv high-voltage cable, the damaged part is sawed off, and a section of intermediate cable is added to connect with both ends of the original cable. The skin of the original high-voltage cable hardens after being used for a period of time, and the newly added cable is relatively softer than the original cable. The connection size of the new cable has strict requirements and is difficult to determine. The stress at the junction of the new and old cables is too larg...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02G1/16
CPCH02G1/16
Inventor 厉晓阳李晓峰吕华李大元贺峰
Owner RIZHAO PORT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap