Environment-friendly safe waterproof fireproof cable

Abstract

The invention relates to an environment-friendly safe waterproof fireproof cable which comprises an inner core of the cable and an outer layer of the cable. The cable is characterized in that the inner core of the cable comprises a conductive wire core, a fireproof layer and insulation shielding layers, wherein the fireproof layer is lapped on the conductive wire core, and the three insulation shielding layers formed in a coextrusion way are arranged outside the fireproof layer; and the outer layers of the cable comprises a semi-conductive waterproof belt, an inner lining layer, a copper wire-copper belt combined shielding layer, a semi-conductive waterproof buffering belt, a piece of aluminium foil and a expansion type halogen-free flame retardant protecting layer in sequence from inside to outside. The cable has the advantages that as the structure is adopted, fireproof, waterproof and safe and reliable effects can be realized, phenomena of spreading burning and harmful gas (such as halogen hydride) generating can not be generated, water can not enter the inside of the cable, a shielding system with a short circuit protection function can be arranged, and the design requirements of the green environment-friendly safe cable can be met. The cable is good in flexibility, can be bent frequently, can be laid flexibly, is good in insulation effect, is good in waterproof performance, avoids accidental electricity leakage, can not influence the reduction of the electrical performance, and is particularly suitable for certain occasions with relatively high fireproof requirements in coastal areas with relatively high humidity.

Description

technical field [0001] The patent of the invention relates to an environment-friendly and safe cable for electric energy transmission, especially a low-smoke, halogen-free and safe cable with special functions of water blocking and fire prevention. Background technique [0002] 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 cau...

AI Technical Summary

Problems solved by technology

At the same time, it also effectively solves the problems of poor heat resistance, poor waterproof performance and low softness in the flexible cables of the prior art.

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