Underground cable

Abstract

The invention discloses an underground cable. The underground cable comprises a cable body, wherein the outer surface of the cable body is fixedly connected with the inner wall of a mica layer; the outer surface of the mica layer is in lap joint with the inner wall of a heat insulation layer; a flame retardant is filled between the mica layer and the heat insulation layer; the outer surface of theheat insulation layer is fixedly connected with the inner wall of a drying layer; and the outer surface of the drying layer is fixedly connected with the inner wall of a flame-retardant layer. The high-fire-resistance underground cable is provided with the mica layer, so that the normal work of the cable body in the underground is guaranteed; by virtue of arrangement of the flame-retardant layer,a ceramic silicon rubber composite layer and the flame retardant, the heat insulation and flame-retardant effects can be played on the cable body, the cable body is prevented from being burnt out when a fire occurs, and therefore the situation that the cable body is burnt when a fire occurs is avoided, so that the property loss of a user is avoided, the investment cost of the electric power department is lowered, and the labor amount of workers is reduced.

Description

technical field [0001] The invention relates to the technical field of electric power construction, in particular to an underground cable. Background technique [0002] The cable is usually a rope-like cable twisted by several or several groups of wires. Each group of wires is insulated from each other, and is often twisted around a center, and the entire outside is covered with a highly insulating covering. [0003] In electric power construction, it is often necessary to bury the cable underground to realize data transmission, but the existing cables have poor fire resistance, and the traditional cables are easily burned in the event of a fire. The cable is burned, which makes the data transmission fail and brings losses to users. However, the newly erected cables have increased the input costs for the relevant departments, and increased the labor of the workers, and the existing cables have poor waterproof and anti-corrosion capabilities, and are easily damaged during use...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an underground cable, which has the advantages of fire resistance and corrosion resistance, and solves the problem that the existing cables have poor fire resistance, and the traditional cables are easy to be burned when a fire occurs, and the cable burns so that the data The failure of transmission has brought losses to the users. However, the newly erected cables have increased the input costs for the relevant departments, and at the same time increased the workload of the workers. Moreover, the existing cables have poor waterproof and anti-corrosion capabilities, and are easily damaged during use. The problem of cable life

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