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Cutthrough grounding cable applied in railway signal system

A technology for grounding cables and railway signals, applied to insulated cables, cables, circuits, etc., can solve problems such as high manufacturing costs, and achieve the effects of low manufacturing costs, increased contact reliability, and good mechanical and physical properties.

Active Publication Date: 2013-06-05
JIANGSU HENGTONG WIRE & CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing conductors that go through the ground wire are pure copper conductors, which are made of electrical round copper wires that are drawn, annealed, and stranded to make a stranded conductor that goes through the ground wire, and are made after the outer layer of the stranded conductor is extruded with a protective layer Through the ground wire, the conductor through the ground wire is made of pure copper, the copper content is more than 99.9%, and the manufacturing cost is expensive

Method used

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  • Cutthrough grounding cable applied in railway signal system
  • Cutthrough grounding cable applied in railway signal system
  • Cutthrough grounding cable applied in railway signal system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A kind of penetrating grounding cable applied to railway signal system, as attached Figure 1-2 As shown, it includes: a grounding steel wire group 2 composed of at least one steel wire 1 twisted, the surface of the steel wire 1 is coated with a second copper layer 3 with a purity of 99.95% or more, and at least 6 aluminum wires 4 twisted A grounding aluminum wire layer is formed on the surface of the grounding steel wire group 2, and the surface of the aluminum wire 4 is coated with a first copper layer 5 with a purity of 99.95% or more;

[0023] Both the thickness of the first copper layer 5 and the second copper layer 3 are 0.10 mm to 0.50 mm;

[0024] A conductive sheath 6 with a volume resistivity of less than 0.65Ω.cm is coated on the surface of the grounded aluminum wire layer, and the conductive sheath 6 is composed of the following components:

[0025] Polyethylene 70%~80%,

[0026] Conductive carbon black 10% ~ 15%,

[0027] Plastic conductive...

Embodiment 2

[0030] Embodiment 2: A kind of penetrating grounding cable applied to railway signal system, as attached figure 1 , 3 As shown, it includes: a grounding steel wire group 2 composed of at least one steel wire 1 twisted, the surface of the steel wire 1 is coated with a second copper layer 3 with a purity of 99.95% or more, and at least 6 aluminum wires 4 twisted A grounding aluminum wire layer is formed on the surface of the grounding steel wire group 2, and the surface of the aluminum wire 4 is coated with a first copper layer 5 with a purity of 99.95% or more;

[0031] Both the thickness of the first copper layer 5 and the second copper layer 3 are 0.10 mm to 0.50 mm;

[0032] A conductive sheath 6 with a volume resistivity of less than 0.65Ω.cm is coated on the surface of the grounded aluminum wire layer, and the conductive sheath 6 is composed of the following components:

[0033] Polyethylene 70%~80%,

[0034] Conductive carbon black 10% ~ 15%,

[0035] Plastic conducti...

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Abstract

The invention discloses a cutthrough grounding cable applied in a railway signal system. The cable is characterized in that: the cable comprises a grounding steel lead group which is formed by twisting at least one steel lead; a second copper layer with a purity of more than 99.95% clads a surface of the steel lead; at least six aluminum conductors are twisted on the surface of the grounding steel lead group so as to form a grounding aluminum conductor layer; a first copper layer with the purity of more than 99.95% clads the surface of the aluminum conductor; thicknesses of the first copper layer and the second copper layer are 0.10mm-0.50mm; a conductive cover layer with a volume resistivity of less than 0.65 omega.cm clads the surface of the grounding aluminum conductor layer; the conductive cover layer comprises: polyethylene, conductive carbon black, a plastic conductive agent and an additive. The cutthrough grounding cable possesses good mechanical physical performance, good electrical performance and low manufacturing costs. Simultaneously, damages generated by poor cutthrough ground wire contact caused by railway track shaking can be reduced and a dosage of rare metal can be reduced too.

Description

technical field [0001] The invention relates to the field of comprehensive grounding systems for rail transit, in particular to a through-grounding cable applied to railway signal systems. Background technique [0002] The through-ground wire is a grounding cable used in railway signal systems, and is a safety grounding wire for system shielding, lightning protection, and electrical equipment. Through the ground wire, the potential of each working point of the large-scale railway electrical system can be basically kept consistent, making the system equipment grounded safely and reliably, eliminating the potential unbalanced current caused by the potential difference between different equipment, and realizing the protection of personnel and equipment. Effective and reliable protection. [0003] Existing conductors that penetrate the ground wire are pure copper conductors, which are made of electrical round copper wires that are drawn, annealed, and stranded to make a strande...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/08H01B1/02H01B7/02
Inventor 王国权
Owner JIANGSU HENGTONG WIRE & CABLE TECH
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