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Single-core medium-pressure flame-retardant fireproof power cable

A flame-retardant and fire-resistant power cable technology, which is applied in the direction of power cables, power cables with shielding layer/conductive layer, insulated cables, etc., to achieve the effects of fast speed, good flame retardant performance, and low crust temperature

Pending Publication Date: 2019-07-05
GOLD CUP ELECTRIC APP HENGYANG CABLES
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  • Summary
  • 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 single-core single-core with good heat insulation and heat dissipation performance and not easy to cause mechanical damage due to 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. Medium Voltage Flame Retardant Fire Resistant Power Cable

Method used

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  • Single-core medium-pressure flame-retardant fireproof power cable

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] see figure 1 with figure 2 , a single-core medium-voltage flame-retardant and fire-resistant power cable shown in the figure, including a conductor 10, an insulating co-extruded three-layer 20 covering the conductor 10, and a metal shielding layer covering the insulating co-extruded three-layer 20 30, the metal shielding layer 30 is also covered with a buffer layer 40, the buffer layer 40 is covered with a heat insulating layer 50, the heat insulating layer 50 is covered with a composite fire-stop layer 60, and the composite fire-stop layer 60 It is covered with an armor layer 70 , and an outer sheath 80 is covered outside the armor layer 70 .

[0026] The present invention will be described in detail below by taking WDZBN-YJY63-8.7 / 15Kv-1*70 as an example.

[0027] The conductor 10 has a diameter of 10 mm and is made of copper. T...

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Abstract

The invention discloses a single-core medium-pressure flame-retardant fireproof power cable. The single-core medium-pressure flame-retardant fireproof power cable comprises a conductor, an insulationco-extrusion layer coated at the external of the conductor, and a metal shielding layer coated at the external of the insulation co-extrusion layer; the power cable is characterized in that a buffer layer is coated at the external of the metal shielding layer, a heat insulation layer is coated at the external of the buffer layer, a composite fireproof layer is coated at the external of the heat insulation layer, an armoring layer is coated on the composite fireproof layer, and an outer protective jacket is arranged at the external of the armoring layer. The power cable disclosed by the invention is good in heat insulation and radiating performances, and is hard to cause mechanical damage due to the accumulation produced on the insulation by the expansion. The power cable still can maintainlong-term power-on capacity in the combustion, and provides a certain guarantee for the power supply of the fire rescue and special equipment.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to single-core medium-voltage flame-retardant and fire-resistant power cables. 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-resistant cables, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B7/18H01B7/288H01B7/29H01B7/295H01B9/02
CPCH01B7/185H01B7/288H01B7/292H01B7/295H01B7/29H01B9/021H01B9/022H01B7/0225H01B7/0275Y02A30/14
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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