Insulating single wire of railway digital signal cable

A digital signal cable and single-wire technology, applied in the direction of insulated cables, insulated conductors, cables, etc., can solve problems such as insulation layer fracture and elongation damage, low compression and tensile strength, communication and signal transmission failures, etc.

Inactive Publication Date: 2014-12-24
JIANGSU DONGQIANG
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

In the existing structure, the inner cortex used as the insulating layer has low compression and tensile strength. During the cable laying and construction process, the insulating layer is often pulled by external forces, causing damage to the fracture and elongation of the insulating layer. The loss of insulation performance of the insulating layer can easily cause communication and signal transmission failures, seriously affecting the safety of railway communication and signal transmission

Method used

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  • Insulating single wire of railway digital signal cable

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Embodiment Construction

[0011] Such as figure 1 As shown, the illustrated railway digital cable insulated single wire includes a conductor 1, and the outer periphery of the conductor 1 is covered with a polyester fiber reinforcement layer 2, an inner skin layer 3, a foam layer 4, and an outer skin layer 5 sequentially from the inside to the outside. The conductor 1 is made of copper material, or other metal conductive materials, the polyester fiber reinforcement layer 2 is a coating layer made of polyester fiber paint, the inner skin layer 3 is made of high-density polyethylene skin layer, and the foam layer 4 A physical foaming layer is adopted, and of course it can also be a chemical foaming layer. The outer skin layer 5 is made of high-density polyethylene material, and its thickness is 0.16 mm.

[0012] The above is only a preferred embodiment of the present invention, but the present invention is not limited thereto, and some changes and improvements can also be made without violating the basic ...

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Abstract

The invention discloses an insulating single wire of a railway digital signal cable. The insulating single wire of the railway digital signal cable comprises a conductor. A polyester fiber reinforcing layer, an inner sheath layer, a foaming layer and an outer sheath layer are wrapped on the periphery of the conductor from inside to outside in sequence. The foaming layer is a physical foaming layer. The polyester fiber reinforcing layer is a polyester fiber paint coating. The insulating single wire of the railway digital signal cable has high tensile strength, high compression resistance and other high mechanical strength and is high in safety and reliability.

Description

technical field [0001] The invention relates to a digital signal cable, in particular to the improvement of the insulation single wire structure of the railway digital signal cable. Background technique [0002] With the rapid development of railway trains in the direction of high speed, heavy load, and intelligence, the safety and reliability of railway communication systems are becoming more and more important, and the requirements for transmission performance are also getting higher and higher. It is used to transmit railway signal control system information and Its electric railway digital signal cable is a very important part of the railway system. [0003] Existing insulating single wires of railway digital signal cables are covered with a three-layer structure outside the conductor. The three-layer structure consists of a low-density polyethylene inner layer, a middle physical foam layer and a silane cross-linked polyethylene outer layer from the inside to the outside...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/18H01B7/02
Inventor 王子纯姚勰唐秀芹吴荣美陈子洪
Owner JIANGSU DONGQIANG
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