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Fire-resistant digital communication cable

A cable and fire-resistant technology, which is applied in the field of fire-resistant digital communication cables, can solve problems such as communication interruption and lack of fire-resistant functions, and achieve the effects of improving bending performance, avoiding pipes and wiring, and improving construction efficiency

Inactive Publication Date: 2019-03-01
TONGDING INTERCONNECTION INFORMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ordinary PVC sheathed digital communication cables do not have the function of fire resistance. When a fire occurs, the communication will be interrupted soon.

Method used

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  • Fire-resistant digital communication cable

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Effect test

Embodiment

[0028] This embodiment provides a fire-resistant digital communication cable, such as figure 1 shown, including:

[0029] The cable core includes four groups of wire pairs arranged in two rows and two columns, and each group of wire pairs includes two mutually twisted transmission lines 11;

[0030] The interlocking armor layer 4 is sleeved on the outside of the four wire pairs;

[0031] The refractory layer is arranged on the inner surface of the interlocking armor layer 4;

[0032] Foam flame-retardant filler 2, filled between the refractory layer and the pair of wires, to fix the four pairs of wires;

[0033] The refractory layer is divided into the first refractory layer 31 and the second refractory layer 32. The material of the first refractory layer 31 is ceramic low-smoke halogen-free flame-retardant polyolefin, and the second refractory layer 32 includes Asbestos cloth and fireproof paint, the fireproof paint is applied on the asbestos cloth and filled in the hollow...

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Abstract

The invention relates to a fire-resistant digital communication cable, which comprises a cable core, an interlocking armor layer, a fire-resistant layer and foam flame-retardant filler, wherein the cable core comprises four groups of line pairs which are arranged into two lines and two rows, and each group of line pair comprises two groups of transmission lines which are mutually twisted; the interlocking armor layer is sheathed out of four groups of line pairs; the fire-resistant layer is arranged on the inner surface of the interlocking armor layer; the foam flame-retardant filler is filledbetween the fire-resistant layer and the line pairs to fix four groups of line pairs; and each transmission line comprises a conductor, a mica tape which wraps the conductor, and a high-density polyethylene insulating layer which coats the mica tape. The fire-resistant digital communication cable has good fire resistance and heat resistance, meanwhile, the adopted stainless steel spiral interlocking armor way improves the bending performance, the tensile / side pressure resistance and the corrosion resistance level of the cable, the cable can be directly laid so as to be free from tube penetration wiring, and construction efficiency is improved.

Description

technical field [0001] The application belongs to the technical field of communication cables, and in particular relates to a fire-resistant digital communication cable. Background technique [0002] Digital communication cables are used for indoor wiring. In special occasions, the flame retardant properties of the cables cannot fully meet the application requirements. The cables need to have fire resistance properties, that is, they can maintain normal communication within 90 minutes in the event of a fire. [0003] Ordinary PVC sheathed digital communication cables do not have fire resistance, and in the event of a fire, communication interruptions will occur soon. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a fire-resistant digital communication cable in order to solve the deficiency of the fire-resistant performance of the communication cable in the prior art. [0005] The technical solution adopted by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B11/10H01B7/295H01B7/29H01B7/28H01B7/22H01B7/18H01B7/17H01B7/04H01B7/02
CPCH01B7/02H01B7/04H01B7/17H01B7/1875H01B7/226H01B7/2806H01B7/29H01B7/292H01B7/295H01B11/1025Y02A30/00
Inventor 沈小平刘玉琴石东星
Owner TONGDING INTERCONNECTION INFORMATION CO LTD