Medium-voltage flame-retardant power cable

A power cable, medium voltage technology, used in power cables, insulated cables, cables, etc., to achieve the effects of improving mechanical properties, high fire resistance, and ensuring environmental protection performance

Inactive Publication Date: 2014-07-02
ANHUI HUAXING CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, medium-voltage fire-resistant power cables at home and abroad are actively researching and developing. After several years of research in China, there is no ideal sample yet.

Method used

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  • Medium-voltage flame-retardant power cable

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the accompanying drawings.

[0009] A medium-voltage flame-retardant power cable, including a conductor, a main core, a branch core, and an intermediate core. The conductor 1 is extruded and wrapped with an insulating layer 2 made of irradiated cross-linked polyethylene insulating material at 150°C to form an insulated core. , three insulated wire cores are twisted and wrapped around a refractory oxygen barrier layer 3 made of ceramic silicon rubber material, and an outer semi-conductive shielding layer 4 is arranged outside the refractory oxygen barrier layer 3 to form the main core; the branch core 5 is composed of a fire-resistant oxygen barrier layer made of ceramic silicon rubber material wrapped around two insulated wire cores; the middle wire core 6 is an insulated wire core; the main wire core, the sub-wire core 3 and the middle wire 4 cores are composed of The polyurethane tape layer 7 is...

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PUM

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Abstract

The invention discloses a medium-voltage flame-retardant power cable. The power cable comprises conductors, main cable cores, auxiliary cable cores and a middle cable core. Insulating layers are wrapped on the conductors in an extruding mode to form insulating cable cores, a fire-resistant oxygen isolating layer made of ceramic silicone rubber materials is wrapped on every three corresponding insulating cable cores in a lapping mode after the three insulating cable cores are stranded together, and outer semiconducting shielding layers are arranged outside the fire-resistant oxygen isolating layers to form the main cable cores. Each auxiliary cable core is formed by wrapping a fire-resistant oxygen isolating layer made of ceramic silicone rubber materials on two insulating cable cores in a lapping mode. The middle cable core is an insulating cable core. A polyurethane wrapping tape layer is wrapped on a cable core in a lapping mode after the cable core is formed by the main cable cores, the auxiliary cable cores and the middle cable core, and an outer semiconducting master shielding layer and an outer protection layer made of low-smoke zero-halogen flame-retardant polyolefin materials are sequentially arranged outside the polyurethane wrapping tape layer. Four control cable cores are arranged in the polyurethane wrapping tape layer. The power cable has high environment friendliness, produces less smoke and does not produce harmful hydracid substances when burnt and further has high fire resistance.

Description

technical field [0001] The invention belongs to the field of wires and cables, and relates to a medium-voltage flame-retardant power cable. Background technique [0002] The occurrence of fire accidents will cause tragic loss of people's lives and property. How to ensure unimpeded power and communication within a certain period of time in the event of a fire, and maximize the precious rescue time to reduce casualties and The loss of life and property is a topic that people have been paying attention to. At present, medium-voltage fire-resistant power cables are being actively researched and developed at home and abroad. After several years of research in China, there is still no ideal sample. Contents of the invention [0003] In order to overcome the defects of the prior art, the purpose of the present invention is to provide a medium-voltage flame-retardant power cable with high environmental protection performance, less smoke and no harmful halogen acid substances duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/295H01B7/282H01B9/00
Inventor 陈永军
Owner ANHUI HUAXING CABLE GROUP
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