Cold-resistant power line

Abstract

A cold-resistant power line provided by the invention comprises an outer sheath and a plurality of insulated lead wires, wherein the outer sheath wraps the plurality of insulated wires, each insulated lead wire comprises a conductive wire core and a fire-resistant layer wrapping the conductive wire core, cold-resistant insulating materials are used, each fire-resistant layer comprises a fire-resistant inner layer and a fire-resistant outer layer, a heat-conducting insulating part is arranged in each fire-resistant layer, the first end of each heat-conducting insulating part penetrates through the corresponding fire-resistant inner layer to extend to the corresponding conductive wire core, and the second end of each heat-conducting insulating part penetrates through the fire-resistant outer layer to contact with the outer sheath. The fire-resistant inner layers and the fire-resistant outer layers can achieve a flame-retardant effect on the heat-conducting insulating parts when a fire occurs, so that the power line has a fire-resistant property. When the insulated lead wires are electrified, heat emitted by the conductive wire cores can be transmitted to the outer sheath through the heat-conducting insulating parts, so that the outer sheath is not hardened and embrittled due to cold, and the power line is not easy to break even if the power line is moved and bent in a cold environment. The product is made of special insulation and sheath materials.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to cold-resistant power cords. Background technique [0002] Power cords are cables used to build power supply networks. The power cord mainly includes an insulated wire and an outer sheath, and the outer sheath covers the insulated wire to protect the insulated wire. There is usually a mica tape wrapping layer between the insulated wire and the outer sheath, and the mica tape wrapping layer makes the power cord have fire resistance. However, the refractory mica tape wrapping also has heat insulation properties, so the mica tape wrapping layer prevents heat from being transferred between the insulated wire of the power cord and the outer sheath, so the heat emitted by the insulated wire when it is energized cannot be transferred to the The outer sheath, therefore, the power cord laid in the cold area is easy to become hard and brittle due to the cold in the cold environment, causin...

AI Technical Summary

Problems solved by technology

However, the refractory mica tape wrapping also has heat insulation properties, so the mica tape wrapping layer prevents heat from being transferred between the insulated wire of the power cord and the outer sheath, so the heat emitted by the insulated wire when it is energized cannot be transferred to the The outer sheath, therefore, the power cord laid in the cold area is easy to be hardened and brittle due to the cold in the cold environment, causing the power cord to break easily when it is moved and bent by the staff, which affects the normal operation of the power supply. supply

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