Concentric flame-retardant cable

A flame retardant cable, flame retardant filling technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of failing to meet the requirements of flame retardant grade, large size, poor flame retardant performance, etc., to achieve stable cable structure, cable The effect of size reduction, increased shielding function

Inactive Publication Date: 2012-06-13
上海市高桥电缆厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the current flame-retardant cables, especially the five-core flame-retardant cables in the prior art, have large dimensions, unstable structures, and poor flame-retardant performance, which cannot meet the high flame-retardant grade requirements.

Method used

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  • Concentric flame-retardant cable
  • Concentric flame-retardant cable
  • Concentric flame-retardant cable

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] like figure 1 As shown, the prior art flame retardant cable structure schematic diagram, it includes core, flame retardant filler 2 and cable sheath 3; core includes insulated core 1 and grounding core 4; flame retardant filler 2 is filled in the insulated wire Between core 1, ground core 4 and cable sheath 3. On the one hand, the structure of the flame-retardant cable of the prior art structure is unstable, and the flame-retardant performance is also poor.

[0014] like figure 2 As shown, the structure diagram of the concentric flame-retardant cable of the present invention includes an insulating core 1, a wrapping layer 6, and a cable jacket 3; a grounding layer 5 is arranged outside the wrapping layer 6, and the cable jacket 3 is wrapped outside the grounding layer 5 ; The grounding layer 5 is a linear structure, which can be copper wire, and is wound out...

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PUM

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Abstract

The invention provides a concentric flame-retardant cable, which consists of an insulated core, a flame-retardant filling strip, a wrapping layer and a cable sheath, wherein metallic hydrate flame-retardant filler containing crystal water is filled in the flame-retardant filling strip, and a grounding layer is arranged outside the wrapping layer. Compared with the prior art, the concentric flame-retardant cable has more stable structure and stronger flame-retardant performance.

Description

technical field [0001] The invention relates to a cable, in particular to a concentric flame-retardant cable. Background technique [0002] At present, with the construction of subways, tunnels and other engineering buildings, the requirements for the flame retardant performance of cables are getting higher and higher, and generally must reach Class A flame retardant grade. like figure 1 As shown, the current flame-retardant cables, especially the five-core flame-retardant cables in the prior art, have large dimensions, unstable structures, and poor flame-retardant performance, which cannot meet the high flame-retardant grade requirements. Contents of the invention [0003] In order to solve the technical problems of the flame-retardant cable in the prior art, especially the five-core flame-retardant cable, which has a large external dimension and an unstable structure, and cannot meet the requirements of a high flame-retardant grade, the present invention provides a simp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/29
Inventor 张志清刘磊
Owner 上海市高桥电缆厂有限公司
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