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Environment-friendly medium-voltage fire-resistant power cable

A power cable, medium voltage technology, applied to power cables, insulated cables, cables with shielding layer/conductive layer, etc., can solve the problem of inability to meet the performance requirements of medium voltage cables, achieve good insulation performance at high temperature, and improve fire resistance. , the effect of small thermal conductivity

Inactive Publication Date: 2014-06-11
ANHUI HUALIAN CABLE GROUP
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  • Abstract
  • Description
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Problems solved by technology

However, due to the special electrical performance and structural requirements of medium-voltage cables, the structural type of conductors wrapped with refractory mica tape can no longer meet the performance requirements of medium-voltage cables.

Method used

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  • Environment-friendly medium-voltage fire-resistant power cable

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Embodiment Construction

[0013] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of an environment-friendly medium-voltage fire-resistant power cable proposed by the present invention.

[0014] refer to figure 1 , an environment-friendly medium-voltage fire-resistant power cable proposed by the present invention, including three conductors 1, the conductor 1 includes a wire 11 located in the middle, and the wire 11 is twisted by a plurality of tinned copper wires. The conductive semiconductive shielding layer 12 is coated on the outside of the wire 11 , and the crosslinked polyethylene insulating layer 13 is wrapped on the outside of the conductive semiconductive shielding layer 12 , and the insulating semiconductive shielding layer 14 is wrapped on the outside of the crosslinked polyethylene insulating layer 13 . Conductive semiconductive shielding layer 12 , insulating layer 13 , and insulating semiconductive shielding layer 14 are formed by co-extruding outside wire 11 . ...

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Abstract

The invention discloses an environment-friendly medium-voltage fire-resistant power cable. The environment-friendly medium-voltage fire-resistant power cable comprises a plurality of conductors, wherein each conductor comprises a conductive wire located in the middle, a conductor semi-conductive shielding layer is wrapped on each conductive wire, an insulating layer is wrapped on each conductor semi-conductive shielding layer, an insulating semi-conductive shielding layer is wrapped on each insulating layer, and a metal shielding layer is wrapped on each insulating semi-conductive shielding layer; the conductors constitute a cable core, a ceramic fiber band thermal insulation layer is wound around the cable core, an extruded polyether-ether-ketone fire-proof layer is wrapped on the ceramic fiber band thermal insulation layer, a sheath layer is wrapped on the polyether-ether-ketone fire-proof layer, and the sheath layer is made of a low-smoke zero-halogen flame-retardant high-intensity abrasion-resistant elastic body. The environment-friendly medium-voltage fire-resistant power cable is excellent in high current-carrying and fire-resistant performance, and suitable for being used in a medium-voltage power distribution system for a long time.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to an environment-friendly medium-voltage fire-resistant power cable. Background technique [0002] Medium-voltage power cables are mainly used in medium-voltage power distribution systems in high-rise buildings, subways, power plants, nuclear power plants, tunnels and other places. With the improvement of people's safety awareness and environmental protection awareness, the safety and environmental protection of cables under fire conditions put forward higher requirements. [0003] The basic idea to enhance the fire resistance of cables in this field is to select materials with high thermal resistance coefficient (such as magnetized silicone rubber) as the heat insulation layer, and increase the thickness of the heat insulation layer, and increase the thermal resistance of the heat insulation layer to play a role. Insulation effect. However, due to the special electrical performan...

Claims

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Application Information

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IPC IPC(8): H01B7/29H01B7/295H01B9/02
Inventor 毛爱民张学武梁继强卢英鹏范德俊翟德玉章少东
Owner ANHUI HUALIAN CABLE GROUP
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