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Double-shielded fire-resistant cable

A fire-resistant cable and double-shielding technology, applied in the field of cables, can solve the problems of weak waterproof and fire-resistant ability, poor anti-shielding ability, etc., and achieve high anti-static interference, strong waterproof and fire-resistant ability

Inactive Publication Date: 2015-05-20
CHENGDU JETCOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its anti-shielding ability is poor, and its waterproof and fire-resistant ability is weak

Method used

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  • Double-shielded fire-resistant cable

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Experimental program
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Effect test

Embodiment Construction

[0016] A double-shielded fire-resistant cable, characterized in that it includes at least three conductors 1, and the conductors are all wrapped with an insulating layer 2, and all the conductors 1 wrapped with the insulating layer 2 are wrapped with an inner shielding layer 3, and the inner shielding layer 3 and the insulating layer 2 The gaps between are filled with fillers 4, the inner shielding layer 3 wraps the outer shielding layer 5, the outer shielding layer 5 wraps the flame-retardant layer 6, the flame-retardant layer 6 wraps the sheath layer 7, the inner shielding layer and the outer shielding layer Each layer includes copper foil with aluminum foil on both sides.

[0017] The filling material 7 is a fire-resistant water-blocking tape, which includes a mica layer, and the two sides of the mica layer are respectively bonded with a reinforcing layer made of glass fiber mesh, and a film composed of water-blocking powder is bonded on the reinforcing layer to form a...

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Abstract

The invention relates to the technical field of cables, and provides a double-shielded fire-resistant cable which comprises at least three conductors (1). Insulating layers (2) wrap the conductors, all the conductors (1) wrapped by the insulating layers (2) are wrapped by inner shielding layers (3), gaps between the inner shielding layers (3) and the insulating layers (2) are filled with fillers (4), an outer shielding layer (5) wraps the inner shielding layers (3), a flame-retardant layer (6) wraps the outer shielding layer (5), a jacket layer (7) wraps the flame-retardant layer (6), the inner shielding layers and the outer shielding layer comprise copper foils, and aluminum foils are arranged on two surfaces of each copper foil.

Description

technical field [0001] The invention relates to the technical field of cables and provides a double-shielded fire-resistant cable. Background technique [0002] When cables are laid in light rail, subway or indoors, high requirements are put forward for their flame retardancy and fire resistance. In order to meet the requirements of the cable use environment, the product structure is designed according to different flame-retardant and fire-resistant requirements. Currently widely used railway signal cables, railway digital signal cables, railway inner shielded digital signal cables, rail transit signal cables, and transponder data transmission cables are divided into two categories, one is the integrated sheath structure, the other is the aluminum sheath structure . Its anti-shielding ability is poor, and its waterproof and fire-resistant ability is weak. [0003] Since the world's first low-voltage power cable (rubber belt wrapped copper conductor) was produced in 1836, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B7/282H01B7/295
Inventor 李亮
Owner CHENGDU JETCOM TECH
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