Flame-retardant cable resistant to high and low temperatures

Abstract

The invention discloses a flame-retardant cable resistant to high and low temperatures, which comprises a sheath and a wire core support, wherein the wire core support comprises a central column and fixing rods, a wire core is arranged between every two adjacent fixing rods, heat-conducting silica gel pads are arranged on the outer side walls of the central column and the fixing rods, a wire core base matched with the wire core in shape is arranged at the end, which makes contact with the wire core, of the heat-conducting silica gel pad, and a heating wire is arranged in the center of the central column. By designing a triple flame-retardant structure, the fireproof performance of the cable is improved, fire accidents caused by short circuit of wires are prevented, and the use safety of the cable is guaranteed; the wire core support structure is designed, so that adjacent wire cores can be effectively isolated, neat stacking of the wire cores is ensured, and the stability of the wire core structure is improved; the heat-conducting silica gel pad of the wire core support is matched with the heating wire, so that the cable can be heated under a low-temperature condition; and when the cable is heated seriously and the external temperature is too low, the cable is cooled through a cooling layer structure.

Description

【Technical field】 [0001] The invention relates to the technical field of electric wires and cables, in particular to the technical field of high and low temperature resistant flame-retardant cables. 【Background technique】 [0002] A cable is a wire made of one or more mutually insulated conductors and an outer insulating layer that transmits power or information from one place to another. With the rapid development of power cable buried laying projects, higher requirements are put forward for the quality of cables. The low-smoke, halogen-free and flame-retardant power cables currently produced are heavy in weight and poor in low temperature resistance, which cannot meet the special requirements of users in this regard. , When the line load is too large, the wire will heat up seriously, or the wire will start to burn due to the short circuit of the line. 【Content of invention】 [0003] The purpose of the present invention is to solve the problems in the prior art, to propo...

AI Technical Summary

Problems solved by technology

With the rapid development of power cable buried laying projects, higher requirements are put forward for the quality of cables. The low-smoke, halogen-free and flame-retardant power cables currently produced are heavy in weight and poor in low temperature resistance, which cannot meet the special requirements of users in this regard. , When the line load is too large, the wire will heat up seriously, or the wire will start to burn due to the short circuit of the line.

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