Flame-retardant composite fireproof cable

Abstract

A flame-retardant composite fireproof cable is characterized by comprising at least two cable cores, wherein each cable core is composed of twisted copper wire conductors each coated with a mica fireproof layer, an insulating damp-proof layer, an aluminum alloy interlocked armor barrier layer and a flame-retardant layer sequentially from inside to outside; the flame-retardant composite fireproof cable is composed of a cabling wrapping belt, an oxygen isolating layer, a ceramic fireproof layer, an interlocked armoring layer and a flame-retardant outer protective layer all of which are sequentially coated outside each cable core from the inside to the outside, and a flame-retardant filling material filled between the cable cores and the cabling wrapping belt.

Description

technical field [0001] The invention relates to a flame-retardant composite fireproof cable. Background technique [0002] Most of the fire-resistant cables in the prior art are magnesium oxide mineral insulated fire-resistant cables and inorganic-insulated fire-resistant cables wrapped with mica tape. The advantage of magnesia mineral insulated fire-resistant cables is that the melting point of the insulator magnesia is 2800°C. When the flame burns at 750°C, the cable structure will not cause problems and has excellent fire resistance. However, the rated voltage of the cable only reaches 750V. The manufacturing process is complicated, the energy consumption of the manufacturing process is large, and the equipment investment is expensive. Because the cable is produced in a discontinuous manner, the output is low and the manufacturing cost is high, which is not suitable for the increasing market demand. The manufacturing length of the cable is limited, such as long-distance...

AI Technical Summary

Problems solved by technology

The fireproof cable of the present invention uses stranded copper wires as conductors, inorganic tapes such as mica and silicon dioxide with excellent dielectric properties and moisture-proof layers as insulation, and aluminum alloy interlocking armor as phase separation barriers and oxygen barriers, ceramics The chemical fireproof layer, the total copper interlocking armor layer and the flame retardant material are used as the sheath, so that the cable not only retains the high temperature resistance, fire prevention, low smoke, non-toxic, aging resistance and other characteristics of the mineral insulated cable of the prior art, but also It overcomes the disadvantages of poor bending performance, easy moisture absorption, many joints, inconvenient installation and construction, expensive manufacturing equipment, complicated process, low output, high energy consumption, and limited manufacturing length in the existing technology.

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