A-class fire-retardant water-proof rat-proof ant-proof intermediate-voltage special cable for rail traffic

A technology for rail transit and special cables, which is applied in the direction of insulated cables, power cables with shielding layers/conductive layers, and cables. Ease of laying and reduced conductor loss

Inactive Publication Date: 2018-05-29
YANGZHOU SHUGUANG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing medium-voltage cables for rail transit

Method used

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  • A-class fire-retardant water-proof rat-proof ant-proof intermediate-voltage special cable for rail traffic

Examples

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Example Embodiment

[0023] A type-A flame-retardant, waterproof, rodent-proof and medium-voltage special cable for rail transit. The cable includes a conductor 1. Three co-extruded conductor shielding layers 2, an insulating layer 3, and an insulating shielding layer 4 are sequentially arranged outside the conductor 1. The wrapping layer 5, the metal shielding layer 6, the water blocking layer 7, the flame retardant layer 8, the inner protective layer 9, the metal armor layer 10, the outer jacket 11, the inner protective layer 9 is extruded, halogen-free and low-smoke Flame-retardant oxygen barrier layer, the oxygen barrier layer is composed of two layers of alkali-free glass ribbons wrapped, and the outer sheath 11 is made of low-smoke, halogen-free, flame-retardant, rat-proof and termite-proof polymer material extruded with light glue The thickness of the photo glue is 10-20 μm, the outer sheath 11 is a polyvinyl chloride outer sheath, and a termite-proof plant additive that is non-toxic and harm...

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Abstract

The invention relates to an A-class fire-retardant water-proof rat-proof ant-proof intermediate-voltage special cable for the rail traffic. The cable comprises a conductor; a conductor shielding layer, an insulation layer, an insulation shielding layer, a wrapping layer, a metal shielding layer, a water blocking layer, a flame-retardant layer, an inner sheath, a metal armored layer, and an outer sheath are arranged successively outside the conductor, wherein the conductor shielding layer, the insulation layer, and the insulation shielding layer re in a three-layer co-extruded manner. The innersheath is an extruded halogen-free low-smoke flame-retardant oxygen barrier layer formed by wrapping of two alkali-free glass tapes. The outer sheath is formed by extruding an optical cement by a low-smoke halogen-free fire-retardant rat-proof ant-proof high-polymer material; and the optical cement has the thickness of 10 to 20 microns. The outer sheath is a polyvinyl chloride outer sheath; and awhite-ant-proof plant additive that is non-toxic and is harmless to the human body and the environment is added into the outer sheath. The cable has characteristics of excellent environmental protection effect and good low-smoke, halogen-free, flame-retardant, waterproof, anti-ultraviolet radiation, rat-proof, and ant-proof performances and the like.

Description

technical field [0001] The invention relates to a cable, in particular to a Class A flame-retardant, waterproof, rodent-proof and ant-proof medium-voltage special cable for rail transit. Background technique [0002] Since most of the urban rail transit uses the subway, the space of the subway is relatively closed, which puts forward high requirements for fire safety. At the same time, it is rainy and humid in the south, and harmful organisms such as mice and termites bring great hidden dangers to the safe operation of electrical facilities such as wires and cables. Therefore, In addition to the requirements of ordinary cables, cables for urban rail transit must also have the characteristics of environmental protection, low-smoke and halogen-free, high flame-retardant, waterproof, UV-resistant, and rodent-proof. The existing medium-voltage cables for rail transit cannot meet the special requirements of rail transit. Contents of the invention [0003] The object of the pre...

Claims

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Application Information

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IPC IPC(8): H01B9/02H01B7/02H01B7/17H01B7/18H01B7/22H01B7/28H01B7/288H01B7/295H01B5/08
CPCH01B9/02H01B5/08H01B7/0225H01B7/17H01B7/18H01B7/22H01B7/28H01B7/288H01B7/295
Inventor 何正寅郑连元梁国华
Owner YANGZHOU SHUGUANG CABLE
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