Environment-friendly and safe water-blocking fireproof cable

Abstract

The invention discloses an environment-friendly and safe water-blocking fireproof cable which is mainly used for transmitting electric energy. The environment-friendly and safe water-blocking fireproof cable comprises cable inner cores and a cable outer layer. The cable outer layer is arranged on the cable inner cores. Each of the cable inner cores is composed of a conductive wire core, a refractory layer, and an insulation shielding layer, wherein the refractory layer wraps the conductor wire core, and the insulation shielding layer of a three-layer mutual-extrusion structure is arranged outside the refractory layer. The cable outer layer sequentially comprises a semi-conductive water blocking tape, a lining layer, a copper wire and copper tape combination shielding layer, a semi-conductive water-blocking cushion tape, an aluminum foil layer and an expansive halogen-free flame-retardant protective layer from inside to outside. The environment-friendly and safe water-blocking fireproof cable of the invention can still maintain high dielectric strength at a combustion temperature, and has the characteristics of being low-smoke, halogen-free, non-toxic and pollution-free. Propagating combustion and generation of harmful gases like halogen hydride at high temperature are not caused. The environment-friendly and safe water-blocking fireproof cable has high flexibility, good insulation effect, good water blocking performance and strong shielding protection performance. Accidental electric leakage is avoided. The electrical performance is not reduced.

Description

[0001] technical field [0002] The invention relates to a control cable for fixed wiring in construction engineering, in particular to an environment-friendly and safe water-blocking and fire-proof cable. Background technique [0003] At present, domestic high-rise buildings, petroleum, mining, metallurgy, ships, power stations, subways, tunnels and other fire safety requirements are high. Most of the cable insulation and sheath layers used are made of halogen-containing insulating materials. Once the fire spreads, not only A large amount of dense smoke will be produced, and highly corrosive hydrogen halide gas with "secondary disaster" will be produced, endangering human life, endangering equipment and polluting the environment. In fire rescue sites, offshore oil platforms, offshore wind power, and tunnels, there will be a large amount of water, which will cause the electrical performance of the cable to drop sharply, and even cause the inside of the cable to be fired due t...

AI Technical Summary

Problems solved by technology

The previous cables were poor in flexibility, difficult to bend and fold, poor in heat resistance, easy to permeate water, and difficult to popularize and apply

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