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Ceramicized single-core medium-pressure flame-retardant fire-resistant power cable

A flame-retardant and fire-resistant, power cable technology, used in power cables with shielding/conductive layers, insulated cables, cables, etc., to achieve good flame retardant performance, small expansion coefficient, and low speed.

Pending Publication Date: 2019-08-09
GOLD CUP ELECTRIC APP HENGYANG CABLES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a ceramic ceramic with good heat insulation and heat dissipation performance and not easy to cause mechanical damage due to the backlog of insulation due to expansion, aiming at the above-mentioned problems existing in the existing single-core medium-voltage flame-retardant and fire-resistant power cables. Chemical single-core medium voltage flame-retardant and fire-resistant power cable

Method used

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  • Ceramicized single-core medium-pressure flame-retardant fire-resistant power cable
  • Ceramicized single-core medium-pressure flame-retardant fire-resistant power cable

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] see figure 1 with figure 2 , a ceramizable single-core medium-voltage flame-retardant fire-resistant power cable shown in the figure, including a conductor 10, an insulating co-extrusion layer 20 covering the conductor 10, and a metal shield covering the insulating co-extrusion layer 20 The layer 30 is covered with an oxygen barrier layer 40 outside the metal shielding layer 30, and the heat insulation layer 50 is covered outside the oxygen barrier layer 40, and the composite fire barrier layer 60 is coated outside the heat insulation layer 50, and the composite fire barrier layer The fire layer 60 is covered with an armor layer 70 , an outer fire barrier layer 80 is coated on the armor layer 70 , and an outer sheath 90 is coated on the outer fire barrier layer 80 .

[0027] The present invention will be described in detail below by...

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Abstract

The invention discloses a ceramizable single-core medium-pressure flame-retardant fire-resistant power cable. The power cable comprises a conductor, an insulating co-extruded layer which coats the conductor, and a metal shielding layer which coats the insulating co-extruded layer. The power cable is characterized in that the metal shielding layer is coated by an oxygen barrier layer; the oxygen barrier layer is coated by a heat insulation layer; the heat insulation layer is coated by a composite fire barrier layer; the composite fire barrier layer is coated by an armor layer; the armor layer is covered by an outer fire barrier layer; and the outer fire barrier layer is covered by an outer sheath. According to the invention, the performances of heat insulation and heat dissipation are great; mechanical damage caused by expansion accumulation on insulation is avoided; the power cable can still maintain long-term power-on during combustion, and provides a certain guarantee for power supply of fire rescue and special equipment.

Description

technical field [0001] The technical field of the power cable of the present invention particularly relates to a ceramizable single-core medium-voltage flame-retardant and fire-resistant power cable. Background technique [0002] With the continuous development of society, people's safety in the use of cables is gradually improving. Flame-retardant and fire-resistant cables have received high attention, and the demand is also gradually increasing. Flame-retardant and fire-resistant cables are mainly used in densely laid cables and densely populated areas. Places, mainly including high-rise buildings, rail transit lines and stations, large entertainment places, nuclear power plants, petrochemical places, tunnels, airports, large industrial and mining enterprises and important underground projects, etc. requirements. At present, most of the medium-voltage flame-retardant and fire-resistant power cables used in the market are three-core medium-voltage flame-retardant and fire-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B7/29H01B7/295H01B9/02
CPCH01B7/0275H01B7/29H01B7/295H01B9/02
Inventor 贾超民陈善求姚林杰曾婉刘森
Owner GOLD CUP ELECTRIC APP HENGYANG CABLES
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