An environment-friendly cable with strong anti-brittleness for low temperature environment

Abstract

The invention discloses an environment-friendly cable with strong anti-brittleness for low-temperature environment, which can be set through the inner and outer diffusion channels and the self-heating layer. When the external water vapor or rainwater enters the self-heating layer through the inner and outer diffusion channels, the self-heating layer generates heat , on the one hand, it can effectively increase the temperature inside the cable and speed up the transmission speed; on the other hand, with the heat storage effect of the viscous fluid, it can soften the heat softening layer from the outside to the inside, and at the same time, the core itself The heat generated will also be absorbed by the thermally softening layer, thereby softening the thermally softening layer from the inside to the outside to a certain extent, thereby effectively improving the brittleness of the cable at low temperature, thereby effectively reducing the occurrence of damage on the surface of the cable at low temperature. The probability of cracks is reduced, thereby effectively prolonging the service life of the cable, reducing material waste, reducing environmental pollution, and improving environmental protection.

Description

technical field [0001] The invention relates to the field of environment-friendly cables, and more specifically relates to an environment-friendly cable with strong anti-brittleness used in low-temperature environments. 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 c...

AI Technical Summary

Problems solved by technology

[0003] For cables used in low temperature environments, generally due to long-term low temperature, the cable sheath outside the core is brittle, and cracks are prone to occur, resulting in leakage or core breakage, and the service life of cables in low temperature environments is generally longer than expected. The service life is low, and at low temperature, the surrounding environment of the cable is too low, which leads to its own temperature being too low, and it is easy to cause the overall transmission efficiency of the cable to decrease, which increases the frequency of maintenance and replacement. After the later replacement, although it will be replaced The cable is recycled, but the recycling is for the core, and the recycling value of the cable sheath is small. On the one hand, it causes a waste of resources, and on the other hand, it is difficult to degrade, resulting in environmental pollution and poor environmental protection.

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