A double-state temperature-changing cold-proof and frost-proof cable

Abstract

The invention discloses a dual-state temperature-variable cold-proof and anti-freeze cable, which belongs to the field of cables. The end is wrapped with a sheath, and the outer surface of the sheath is wrapped with a semi-permeable soft layer. At high temperature, the air-controlled semi-oil is partially vaporized to generate gas, and the outer air bulge bulges outward and fills the inside of the outer air bulge with gas. Compared with the solid, the heat conduction speed of the gas is relatively slow, so that it can effectively isolate the external temperature, thereby effectively improving the overall high temperature resistance of the cable and prolonging the service life. Under the adjustment of light oil, the air-controlled semi-oil overall presents a solid state with a certain viscosity, which can effectively alleviate the defect that the outer layer of the cable becomes hard and brittle at low temperature. Compared with the existing technology, the cable is significantly improved. The anti-brittleness in winter further improves the service life of the cable.

Description

technical field [0001] The invention relates to the field of cables, more specifically, to a double-state temperature-changing cold-proof and anti-freeze 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 c...

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. In addition, under low temperature conditions, the outer sheath of the cable will harden and the brittleness will increase correspondingly, which will lead to cracking or even fragmentation in winter, making the service life of the cable not long

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