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Shielded low-smoke and low-toxicity signal cable for subway

A signal cable, shielding type technology, applied in the field of cable structure, can solve the problem that the signal control system of subway and light rail cannot be applied, and achieve the effect of preventing insect pests, smoke and toxic gas

Inactive Publication Date: 2012-07-18
JIANGSU CHANG CHENG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Cables for subway and light rail signal control systems should be fire-resistant, waterproof, insect-proof, and have less smoke and less toxic gas released when burning. Ordinary cables do not have these properties and cannot be used in subway and light rail signal control systems.

Method used

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  • Shielded low-smoke and low-toxicity signal cable for subway
  • Shielded low-smoke and low-toxicity signal cable for subway

Examples

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Embodiment Construction

[0007] like figure 1 As shown, it is a shielded low-smoke and low-toxicity signal cable for subway, including two sets of cable cores 1, each set of cable cores 1 includes two wire cores 1-1, separate polyester tape around the cladding 1-2 and separate shielding Layer 1-3, each wire core 1-1 includes a conductor 1-1-1, the conductor 1-1-1 is wrapped with a mica refractory layer 1-1-2, and the mica refractory layer 1-1-2 is extruded Halogen-free low-smoke insulation layer 1-1-3. The sub-polyester tape wrapping layer 1-2 is arranged on the periphery of the two wire cores 1-1, and the sub-shielding layer 1-3 is arranged on the periphery of the sub-polyester tape wrapping layer 1-2. The outer circumference of the two sets of cable cores 1 is sequentially provided with a total polyester tape wrapping layer 2, a total shielding layer 3, a composite waterproof layer 4, an armor layer 5, and a halogen-free low-smoke outer sheath 6. 1 and the total polyester tape wrapping 2 is provid...

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PUM

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Abstract

The invention discloses a shielded low-smoke and low-toxicity signal cable for a subway, relating to the technical field of cable structures. The shielded low-smoke and low-toxicity signal cable comprises two groups of cable cores, wherein each group of cable cores comprises two cable cores, a segregation grease band wrapped covering and a branch shielding layer; each cable core comprises a conductor respectively; a mica fire-resistant layer is wrapped outside the conductor; a halogen-free and low-smoke insulating layer is extruded outside the mica fire-resistant layer in a wrapping manner; the segregation grease band wrapped covering is formed on the peripheries of two cable cores; the branch shielding layer is formed on the periphery of the segregation grease band wrapped covering; the peripheries of the two groups of cable cores are provided with total segregation grease band wrapped coverings, total shielding layers, compound water-proof layers, armor layers and halogen-free and low-smoke outer jackets in sequence from inside to outside; and a polypropylene filler is arranged between the two groups of cable cores and the total segregation grease band wrapped coverings. The shielded low-smoke and low-toxicity signal cable has the properties of fire resistance, waterproofness, prevention of insect pest, small amount of smog during combustion, less release of small quantity of toxic gases, and the like, and can be widely applied to subway and light rail signal control systems.

Description

technical field [0001] The invention relates to the technical field of cable structures. Background technique [0002] Cables for subway and light rail signal control systems should be fire-resistant, waterproof, insect-proof, and have less smoke and less toxic gas release when burning. Ordinary cables do not have these properties and cannot be used in subway and light rail signal control systems. Contents of the invention [0003] The purpose of the present invention is to design a shielded low-smoke and low-toxicity signal cable for subway, which has the properties of good shielding effect, less smoke when burning, and less toxic gas released. [0004] The object of the present invention is achieved in this way: a shielded low-smoke and low-toxicity signal cable for subways includes two sets of cable cores, each set of cable cores includes two wire cores, a polyester tape wrapping layer and a separate shielding layer, each The two wire cores respectively include a condu...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/17H01B7/18H01B7/282H01B7/295
Inventor 陈赟胡元祥吴华
Owner JIANGSU CHANG CHENG CABLE
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