A high voltage power cable and a method of manufacturing the same

By using halogen-free flame-retardant materials and electrostatic atomization technology in high-voltage power cables, combined with a multi-stage cooling device, the problems of insufficient mechanical strength and flame-retardant performance were solved, achieving an efficient and water-saving cooling process, and improving the overall performance and production efficiency of the cables.

CN122136085APending Publication Date: 2026-06-02YICHANG HONGQILONGTENG CABLE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YICHANG HONGQILONGTENG CABLE CO LTD
Filing Date
2026-03-31
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing high-voltage power cables are insufficient in terms of mechanical strength and flame retardant performance, and traditional cooling methods suffer from uneven cooling, high water consumption, and low production efficiency.

Method used

It uses halogen-free flame-retardant polyolefin sheath material and cross-linked polyethylene material, combined with electrostatic atomization technology and multi-stage cooling device to form a continuous flame-retardant barrier, improving mechanical strength and cooling efficiency.

Benefits of technology

It achieves an efficient and uniform cooling process, reduces water consumption, improves the flame retardant properties and mechanical strength of the cable, and ensures the structural stability and long-term operational reliability of the cable.

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Abstract

This application belongs to the technical field of power cables and cable manufacturing equipment, specifically relating to a high-voltage power cable and its manufacturing method. The cable, from the outside to the inside, comprises the following structural layers: a protective layer, an outer insulation layer, metal braided reinforcement, a flame-retardant structural layer, a filler layer, a structural reinforcement layer, a cable core, and a core insulation layer. This application utilizes halogen-free flame-retardant polyolefin sheath material and halogen-free high flame-retardant tape, ensuring that no toxic halogen gases are produced during combustion, meeting environmental protection requirements. Simultaneously, the high overlap rate of the wrapping forms a continuous flame-retardant barrier, effectively preventing the spread of flames. Both the outer insulation layer and the core insulation layer are made of cross-linked polyethylene, formed through extrusion and cross-linking processes, resulting in high heat resistance, excellent dielectric strength, and significantly improved long-term operational reliability.
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