Gas transfer type anti-freezing and high-temperature-resistant cable

Abstract

The invention discloses a gas transfer type anti-freezing and high-temperature-resistant cable, and belongs to the cable field. According to the gas transfer type anti-freezing high-temperature-resistant cable, a self-bulging layer and an interlayer transfer line are arranged; at high temperature, the self-bulging layer is heated to expand, the interlayer transfer line is driven to move upwards, therefore, the self-bulging layer is filled with interlayer protective gas from the flexible interlayer, and spreading of external high-temperature heat into the wire core layer can be effectively inhibited and slowed down; and at low temperature, the self-bulging layer restores to the original shape, the interlayer transfer line is mutually folded on the outer surface of the inner sheath to form atemperature isolation layer, leakage of the temperature generated during the operation of the cable can be effectively inhibited, and the cable can effectively isolate external low-temperature invasion. Thus, it is further ensured that the power transmission efficiency of the cable is not liable to be affected by low temperature, external high temperature is prevented from getting close to the internal wire core layer at high temperature, and further the normal power transmission effect of the cable is effectively guaranteed.

Description

technical field [0001] The invention relates to the field of cables, in particular to an air transfer type antifreeze and high temperature resistant cable. Background technique [0002] The cable is mainly composed of the following 4 parts. ① Conductive wire core: made of high conductivity material (copper or aluminum). According to the requirements of cable softness under laying conditions, each wire core may be formed by twisting a single wire or multiple wires. ②Insulation layer: The insulation material used for cables should have high insulation resistance, high breakdown electric field strength, low dielectric loss and low dielectric constant. Commonly used insulating materials in cables are oil-impregnated paper, polyvinyl chloride, polyethylene, cross-linked polyethylene, rubber, etc. Cables are often classified by insulating materials, such as oil-impregnated paper insulated cables, PVC cables, XLPE cables, etc. ③ Sealing sheath: protect the insulated wire core f...

AI Technical Summary

Problems solved by technology

[0003] When the cable is in use, its power transmission efficiency is easily affected by the external temperature, especially in winter or summer, there will always be too high or too low temperature, which will cause the power transmission speed to be too low and affect the overall performance of the cable. efficiency of use

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