Environment-friendly cable with high brittleness resistance for low-temperature environment

Abstract

The invention discloses an environment-friendly cable with high brittleness resistance for a low-temperature environment. An inner diffusion channel, an outer diffusion channel and a self-heating layer are arranged; external water vapor or rainwater enters the self-heating layer through the internal and external diffusion channels; self-heating layer heating, on one hand, the internal temperatureof the cable can be effectively increased; accelerating transmission speed, on the other hand, the heat storage effect of viscous fluid is matched; a certain softening effect can be achieved on the thermal change softening layer from outside to inside; meanwhile, the heat generated by the wire core can be absorbed by the thermal softening layer during working. Therefore, the cable has a certain softening effect on the thermal softening layer from inside to outside, the brittleness of the cable at low temperature is effectively improved, the probability of cracking of the surface of the cable at low temperature is effectively reduced, the service life of the cable is effectively prolonged, material waste is reduced, environmental pollution is reduced, and the environmental protection property is improved.

Description

technical field [0001] The invention relates to the field of environmental protection cables, more particularly, to an environmentally friendly cable with strong brittleness resistance for low temperature environment. Background technique [0002] The cable mainly consists of the following 4 parts. ① Conductive core: Made of high-conductivity material (copper or aluminum). According to the requirements for the flexibility of the cable under the conditions of laying and use, each core may be made of a single wire or multiple wires stranded. ②Insulation layer: The insulating material used for the cable 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, PV...

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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