Low-smoke halogen-free flame-retardant crosslinked polyethylene power cable

By designing corrugated grooves and limiting linkage assemblies on the cable, the problem of insulation layer cracking caused by small-angle bending in low-smoke halogen-free flame-retardant cross-linked polyethylene cables under high-temperature environments has been solved, thus achieving cable protection and safe operation.

CN121601316APending Publication Date: 2026-03-03衡缆电缆有限公司
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Patent Information

Application Number
CN202511900599.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-16
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

The existing low-smoke halogen-free flame-retardant cross-linked polyethylene cables suffer from insulation aging and cracking due to small-angle bending under high-temperature conditions.

Method used

The design employs a combination of corrugated grooves, fixed sleeves, and limiting rod assemblies. By creating corrugated grooves at equal intervals and installing fixed sleeves and limiting rod assemblies, the bending direction of the cable is restricted, preventing the insulation layer from cracking due to compression under high-temperature conditions.

Benefits of technology

It effectively prevents the insulation layer from cracking due to small-angle bending under high temperature conditions, reduces the wear and damage of the insulation layer, and ensures the safe operation of the cable.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of power cables, and provides a low-smoke halogen-free flame-retardant crosslinked polyethylene power cable which comprises a wave groove, a fixing sleeve and a limiting connecting rod assembly, the wave groove is annularly formed in an insulating layer, and the fixing sleeve detachably sleeves the insulating layer and is arranged at the position of a fixing section; the two ends of the limiting connecting rod assembly can be detachably and rotationally connected with the two adjacent fixing sleeves correspondingly, the two ends of the limiting connecting rod assembly in a shortened state are connected with the two fixing sleeves correspondingly, at the moment, the limiting connecting rod assembly can rotate relative to the fixing sleeves, and the two ends of the limiting connecting rod assembly in an extended state are connected with the two fixing sleeves correspondingly. By means of the technical scheme, the problem that in the prior art, when a cable with an insulating layer made of a low-smoke halogen-free flame-retardant material is in a high-temperature environment, the insulating layer is likely to be aged and cracked due to small-angle bending is solved.
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