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Rail traffic integrated grounding cable

A grounding cable and rail transit technology, which is applied in the field of railway cables, can solve the problems of short service life, poor wear and corrosion resistance, and poor cable quality of comprehensive grounding cables for railway rail transit, and achieve compact structure and improved durability. Corrosion performance, effect of lowering electrical resistivity

Inactive Publication Date: 2017-11-07
JIANGSU HENGTONG WIRE & CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual integrated grounding cable for subway rail transit is pure copper stranded wire, which can conduct electricity to release static electricity. However, the integrated grounding cable for railway rail transit is of poor quality, with poor wear and corrosion resistance. It is safe to use after long-term use. Will cause wear and tear, resulting in a shorter service life of the integrated grounding cable for railway rail transit

Method used

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  • Rail traffic integrated grounding cable
  • Rail traffic integrated grounding cable

Examples

Experimental program
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Effect test

Embodiment 1~4

[0031] Embodiments 1 to 4: A comprehensive grounding cable for rail transit, comprising a centrally located round copper conductor 1, 5 to 7 first trapezoidal copper conductors 21 and 10 to 14 second trapezoidal copper conductors 7, the 5 to 7 A first trapezoidal copper conductor 21 is stranded on the outer surface of the round copper conductor 1 to form an intermediate conductive layer 2, and the 10-14 second trapezoidal copper conductors 71 are stranded on the intermediate conductive layer 2 to form an outer conductive layer 7. The stranding pitch of a trapezoidal copper conductor 21 and the second trapezoidal copper conductor 71 is 70-90mm, and a non-welded copper alloy sheath 3 is coated on the outer surface of the outer conductive layer 7, and the non-welded copper alloy sheath 3. The outer surface has a metal passivation layer 4.

[0032] The non-welded copper alloy sheath 3 is composed of the following components by weight:

[0033] Table 1

[0034]

Examp...

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Abstract

The present invention discloses a rail traffic integrated grounding cable. The cable comprises a central copper conductor at the center, 6 external copper conductors are stranded at the outer surface of the central copper conductor, the diameters of the central copper conductors and the external copper conductors are 1.8-2.2 mm, the stranding pitches of the 6 external copper conductors are 50-70 mm, the outer surface of an external conductive layer is coated with a non-welding copper alloy sheath, the outer surface of the non-welding copper alloy sheath is coated with a metal passivation layer, and the non-welding copper alloy sheath is composed of, part by weight, copper of 70-90 parts, tin of 1-3 parts, nickel of 2-3 parts, beryllium of 1-2 parts, titanium of 0.5-1 parts and rare earth of 0.1-0.2 parts. The rail traffic integrated grounding cable improves the metal plasticity and greatly improves the metal lengthening coefficient so as to further improve the stability of the rail traffic integrated grounding cable structure and reduce the resistivity, improve the service life and conductivity and greatly enhance the corrosion resistance.

Description

technical field [0001] The invention relates to a railway cable, in particular to a comprehensive grounding cable for rail transit. Background technique [0002] As the speed of railway trains is getting faster and faster, higher requirements are put forward for the safety and reliability of railway electrical equipment and personal safety protection. Railway rail transit integrated grounding cables are used on railways for various metal facilities and various The ground wire is connected to ensure a good connection between the electrical equipment and the earth, and the ground potential remains consistent. The usual integrated grounding cable for subway rail transit is pure copper stranded wire, which can conduct electricity to release static electricity. However, the integrated grounding cable for railway rail transit is of poor quality, with poor wear and corrosion resistance. It is safe to use after long-term use. Wear and tear will occur, resulting in a shorter service...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/08H01B9/00C22C9/04C22F1/08
CPCH01B5/08C22C9/04C22F1/08H01B9/006
Inventor 王国权沈惠丽张波梁保富姜勤荣范建华
Owner JIANGSU HENGTONG WIRE & CABLE TECH
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