Special fire-resistant cable processing technology

Abstract

The invention discloses a special fire-resistant cable processing technology, which comprises the following steps: preparing a special fire-resistant insulating raw material, weighing, stirring the special fire-resistant insulating raw material, mixing a special fire-resistant insulating mixed material, cooling the special fire-resistant insulating material, drawing, annealing, stranding, co-extruding three layers, wrapping a special fire-resistant insulating protective layer, shielding by a copper wire and a copper strip, carrying out insulation wrapping, a first partial discharge test, lining extrusion, sheath extrusion, a second partial discharge test and finished product detection, and packaging and warehousing. The special fire-resistant cable processing technology has the beneficial effects that: the flexibility of the refractory material is relatively good, the protection effect is improved to a certain extent, all the materials can be uniformly mixed through the two steps of mixing and mixing, the special refractory material can be conveniently fused, a special refractory insulation protection layer is cooled and cut off, the material quality is detected, and data of the special fire-resistant insulating material can be better obtained and compared with data of two partial discharge tests for analysis, so that a data analysis model is established and an optimal finished product is selected.

Description

technical field [0001] The invention relates to the field of cable processing technology, in particular to a special fire-resistant cable processing technology. Background technique [0002] Fire-resistant wire and cable In a wire and cable fire accident, the wire and cable product can maintain normal operation for a certain period of time while the external flame is still burning, maintain the integrity of the wire and cable line and maintain the normal operation of the line equipment. Fire-resistant cables refer to cables that can maintain safe operation for a certain period of time under the condition of flame burning. Fire-resistant cables are widely used in high-rise buildings, underground railways, underground streets, large power stations and important industrial and mining enterprises and other places related to fire safety and fire-fighting and lifesaving, such as power supply lines and control lines of emergency facilities such as fire-fighting equipment and emerge...

AI Technical Summary

Problems solved by technology

Fire-resistant cables are widely used in high-rise buildings, underground railways, underground streets, large power stations and important industrial and mining enterprises and other places related to fire safety and fire-fighting and lifesaving, such as power supply lines and control lines of emergency facilities such as fire-fighting equipment and emergency guide lights; fire-resistant cables In the production process, due to the use of magnesium oxide as the insulating material and the seamless copper tube as the sheath, the flexibility is not good