Flame-retardant special-shaped cable and forming equipment for flame-retardant layer of flame-retardant special-shaped cable

Abstract

The invention discloses a flame-retardant special-shaped cable and forming equipment for a flame-retardant layer of the flame-retardant special-shaped cable, and the flame-retardant special-shaped cable has the characteristics of good flame retardance and high forming quality. The technical scheme is characterized in that: the flame-retardant special-shaped cable comprises an outer sheath and a plurality of wires arranged in the outer sheath, wherein each wire comprises a wire core and an insulating layer coated on the outer wall of the wire core, an inner sheath of a flat structure is further arranged in the outer sheath, the wires are horizontally arranged in the inner sheath at equal intervals, the inner sheath is of a double-layer composite structure, a mica tape winding layer is arranged between the two layers of inner sheaths, and a flame-retardant layer is further arranged between the inner sheath and the outer sheath. And the flame-retardant layer comprises a flame-retardant coating coated on the outer wall of the inner sheath and flame-retardant powder sprayed on the outer wall of the flame-retardant coating. The flame-retardant special-shaped cable is suitable for the technical field of cables.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a flame-retardant special-shaped cable and molding equipment for a flame-retardant layer thereof. Background technique [0002] Cables are generally used to transmit electrical energy, electrical signals, etc., and cables have become an indispensable part of information transmission in today's life. At present, when the cable is used, there are many harsh environments, and the cable is prone to damage in the harsh environment, so the cable in the harsh environment needs to be maintained frequently, and the cost is extremely high, especially in the high temperature environment, the cable Excellent insulation, fire resistance, and high temperature resistance are the most basic conditions for cables, and fire is also a common disaster at present, and in the process of disasters, power protection settings rely on cables to transmit signals and electric energy to a large extent. Let i...

AI Technical Summary

Problems solved by technology

At present, when the cable is used, there are many harsh environments, and the cable is prone to damage in the harsh environment, so the cable in the harsh environment needs to be maintained frequently, and the cost is extremely high, especially in the high temperature environment, the cable Excellent insulation, fire resistance, and high temperature resistance are the most basic conditions for cables, and fire is also a common disaster at present, and in the process of disasters, power protection settings rely on cables to transmit signals and electric energy to a large extent. Let it work, therefore, the fire performance of the cable is very important for today's production and life

[0003] Existing flame-retardant cables have relatively simple flame-retardant methods. The flame-retardant methods are usually directly using flame-retardant rubber sleeves, or applying flame-retardant coatings, or spraying flame-retardant powder on the surface of the rubber layer. The method of forming a flame-retardant layer, but the existing coating method and spraying method do not have suitable proprietary equipment. The traditional equipment or methods such as spraying, dipping and spraying guns all have defects, which will affect the molding quality. Therefore it needs to be improved

Images