High-efficiency insulating flame-retardant power cable

Abstract

The invention discloses a high-efficiency insulating flame-retardant power cable which comprises a cable body and a flame-retardant unit penetrated by the cable body, the flame-retardant unit comprises a protection tube and end caps located at the two ends of the protection tube, one end of each end cap is open, the other end of each end cap is provided with a through hole penetrated by the cable body, and the opening of each end cap is provided with a first annular flange. Each end cap is internally provided with an annular blocking piece through which a cable body penetrates, the inner side wall of each end cap is further provided with an abutting block abutting against the corresponding annular blocking piece, the two ends of the protection pipe are inserted into the two end caps respectively and abut against the annular blocking pieces in the two end caps, and the protection pipe is further provided with two second annular flanges. The two second annular flanges are in one-to-one correspondence with the first annular flanges of the two end caps, and the corresponding first annular flanges and second annular flanges are fixedly connected; and a flame-retardant material is filled between one end, with the through hole, in the end cap and the circular-ring-shaped separation blade. The cable provided by the invention has an efficient flame-retardant effect.

Description

technical field [0001] The present application relates to the field of cables, in particular to a high-efficiency insulating and flame-retardant power cable. Background technique [0002] Flame retardant cable refers to the cable in which the sample is burned under the specified test conditions, after the test fire source is removed, the spread of the flame is only within a limited range, and the residual flame or residual burn can be extinguished within a limited time. The fundamental characteristic is: in the event of fire, it may be burnt out and cannot operate, but it can prevent the spread of fire. Flame retardant properties are extremely important properties for cables. During the use of cables, sometimes the cables pass through the wall from one side of the wall to the other side. When one side of the wall burns, if If the flame retardant properties of the cable are not up to standard, or the wiring arrangement is unreasonable, it may cause the fire to spread along t...

AI Technical Summary

Problems solved by technology

Flame retardant properties are extremely important properties for cables. During the use of cables, sometimes the cables pass through the wall from one side of the wall to the other. When one side of the wall burns, if If the flame retardant properties of the cable are not up to standard, or the layout of the penetration is unreasonable, it may cause the fire to spread along the cable due to the cable passing through the wall, which is more dangerous.

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