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Method for branching cable joint and structure of ring support for spacing wire

A branch and power cable technology, applied in the direction of electrical components, etc., can solve the problems of cable core insulation performance decline, branch joint volume growth, and longer opening length, etc., to facilitate construction and installation, use less wire, and seal reliable effect

Inactive Publication Date: 2006-04-19
达诺尔电气(集团)有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing railway tunnel special lighting power cables (which contain control cable core wires and power core wires, with special intermediate cable core wires and made of double-layer sheaths), in the joint branch, in order to meet the industry electrical wiring standards, The joints of the power core wires must be misaligned front and back, so it is often necessary to extend the length of the opening of the main cable that is determined to be a branch, which is not only inconvenient for construction and installation, but also has poor sealing performance, which may easily cause the insulation performance between the cable cores to decline, and the branch Joint volume grows

Method used

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  • Method for branching cable joint and structure of ring support for spacing wire
  • Method for branching cable joint and structure of ring support for spacing wire
  • Method for branching cable joint and structure of ring support for spacing wire

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Experimental program
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Embodiment Construction

[0012] Branching method of railway tunnel lighting power cable joint;

[0013] As shown in Figure 1(a),

[0014] 1) On the main cable determined to be a branch, use a wet rag to wipe off the dirt on the surface of the branch, and then dry it with a dry rag, the length is L;

[0015] 2) Cut and strip the outer sheath of L / 2 at its center;

[0016] 3) Then cut and strip the inner sheath with m<L / 2;

[0017] 4) Peel off the binding tape and filler at the cable core, and reveal the core wire group including the control cable core wire, intermediate cable core wire, and power core wire;

[0018] As shown in Figure 1(b),

[0019] 5) According to the diameter of the main cable, put the appropriate branch spacer ring support structure into the core wire group, and snap each core wire into the corresponding groove on the surface of the ring support, and the middle core wire of the cable passes through the ring support. The opening gap enters the middle of the ring support, and the ...

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Abstract

The method is in use for power cable for illumining railway tunnel. Based on diameter of main cable, the method places matched ring support for spacing wire to core thread set. Each core thread is clipped to relevant groove on surface of ring support. Through open gap, middle cable enters to center of the ring support. A segment of insulation sheath of power cable to be educed out on one or two sides of the ring support are peeled off. The peeled branching cable and relevant cable are wire wrapped according to requirement, and corresponding binding up is carried out for the joint by using selfadhesive tape of electrician. The ring support for spacing wire is a shaped column. There is a through hole in center of the shaped column, and there are grooves matched to cables on surface. Advantages are: jointing without discontinuity, compact mechanical structure, reliable seal, and good electrical specification.

Description

technical field [0001] The invention relates to a method for branching of power cable joints used in railway tunnel lighting and a ring support structure for branch wires. Background technique [0002] Existing railway tunnel special lighting power cables (which contain control cable core wires and power core wires, with special intermediate cable core wires and made of double-layer sheaths), in the joint branch, in order to meet the industry electrical wiring standards, The joints of the power core wires must be misaligned front and back, so it is often necessary to extend the length of the opening of the main cable that is determined to be a branch, which is not only inconvenient for construction and installation, but also has poor sealing performance, which may easily cause the insulation performance between the cable cores to decline, and the branch The joint volume grows. Contents of the invention [0003] The purpose of the present invention is to provide a branchin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G3/08H02G3/16
Inventor 章耀德
Owner 达诺尔电气(集团)有限公司
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