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Water-blocking cable

A cable and water blocking technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of weak waterproof and fire resistance, poor anti-shielding ability, etc., and achieve the effect of high anti-static interference and strong waterproof and fire resistance.

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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  • Water-blocking cable

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Embodiment Construction

[0015] The present invention is further explained below:

[0016] A water-blocking cable, characterized in that it includes a single-strand cable, the single-strand cable has at least three conductors 1, the conductors are all wrapped with an insulating layer 2, and at least two single-strand cables are wrapped by an inner shielding layer 3 to form a single-strand shielded cable, The gap between the inner shielding layer 3 and the single-strand cable is filled with filler 4, at least two single-strand shielding cables are wrapped by the outer shielding layer 5, the outer shielding layer 5 is wrapped with a water-blocking layer 6, and the water-blocking layer 6 is wrapped with a sheath layer 7, the inner shielding layer is a copper layer, and through holes are evenly distributed on the copper layer, the outer shielding layer includes copper foil, and aluminum foil is provided on both sides of the copper foil, and the water blocking layer 6 includes non-woven fabric, and both...

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Abstract

The invention relates to the technical field of cables and provides a water-blocking cable which is high in shielding performance and high in waterproofness, moisture resistance and high-temperature resistance. The water-blocking cable comprises single cables, each single cable comprises at least three conductors (1), an insulating layer (2) is wrapped outside each conductor, at least two single cables are wrapped by an inner shielding layer (3) to form a single shielding cable, gaps between the inner shielding layers (3) and the single cables are filled with filler (4), at least two single shielding cables are wrapped by an outer shielding layer (5), a water-blocking layer (6) is wrapped outside the outer shielding layer (5), a jacket layer (7) is wrapped outside the water-blocking layer (6), each inner shielding layer is a copper layer, through holes are formed in each copper layer uniformly, the outer shielding layer comprises copper foil, aluminum foil is arranged on each of two sides of the copper foil, the water-blocking layer (6) comprises nonwoven fabric, and a polyacrylate layer is arranged on each of two sides of the nonwoven fabric.

Description

technical field [0001] The invention relates to the technical field of cables and provides a water-blocking cable. Background technique [0002] When cables are laid on light rail, subway or indoors, high requirements are put forward for their waterproof, moisture-proof, flame-retardant and fire-resistant properties. 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) w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B7/282H01B7/29
CPCY02A30/14
Inventor 李亮
Owner CHENGDU JETCOM TECH
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