A gas transfer type frost-resistant and high-temperature resistant cable

Abstract

The invention discloses a gas-transfer type frost-resistant and high-temperature-resistant cable, which belongs to the field of cables. A gas-transfer type freeze-resistant and high-temperature resistant cable is provided with a self-drum cladding and an interlayer transfer line. When the temperature is high, the self-drum cladding expands when heated. , to drive the interlayer transfer line to move upward, so that the interlayer protective gas is filled with the self-bulging cladding from the flexible interlayer, which can effectively restrain and slow down the spread of external high-temperature heat into the core layer. At low temperatures, the self-bulging cladding returns to its original state. The interlayer transfer line is folded with each other on the outer surface of the inner sheath to form a temperature isolation layer, which can effectively suppress the leakage of the temperature generated by the cable itself when it is running, and can effectively isolate the low temperature invasion from the outside, thereby effectively ensuring the power transmission of the cable The efficiency is not easily affected by low temperature, and at high temperature, it can effectively prevent the high temperature from the outside from approaching the inner core layer, thereby effectively ensuring the normal power transmission function of the cable.

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

Images