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Concentric flame-retardant cable

A flame-retardant cable and flame-retardant filling technology, which is applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of failing to meet the flame-retardant grade requirements, poor flame-retardant performance, and unstable structure, and achieve stable cable structure and increase Shielding function, effect of preventing burning

Inactive Publication Date: 2010-09-29
上海市高桥电缆厂有限公司
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  • Abstract
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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

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Embodiment Construction

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

[0013] Such as 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] Such as 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 wou...

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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. Such as 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 s...

Claims

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Application Information

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Patent Type & Authority Applications(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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