Environment-friendly and safe fireproof cable

Abstract

The invention discloses an environment-friendly and safe fireproof cable which comprises a cable core and a cable outer layer, wherein the cable core is formed by twisting three conductor cores; each conductor core is formed by extruding and wrapping an insulation shielding layer, an XLPE (cross linked polyethylene) insulation layer, a conductor shielding layer and a mica tape fireproof layer on a conductor from outside to inside in sequence; one ground wire core is arranged in each conductor shielding layer; the cable outer layer is formed in a way that the cable core is extruded and wrapped by a semiconductive waterproof tape, a lining layer, a copper wire and copper tape combined shielding layer, a semiconductive buffer waterproof layer, an aluminium plastic composite tape and a low smoke zero halogen flame retardant fireproof sheath from inside to outside in sequence; a ground wire core is arranged on the semiconductive buffer waterproof layer. The environment-friendly and safe fireproof cable is fireproof, waterproof, non-toxic, environment-friendly, high in safety, good in shielding performance, good in current balance, and capable of still maintaining energization and stable current under specific disaster conditions.

Description

technical field [0001] The invention relates to cables, in particular to an environment-friendly and safe fireproof cable. Background technique [0002] At present, in domestic high-rise buildings, petroleum, mining, metallurgy, ships, power stations, subways, tunnels and other occasions with high fire safety conditions, the insulation layer and sheath layer of cables used are mostly made of halogen-containing insulating materials. Once the fire spreads, it will not only produce a large amount of dense smoke, but also produce highly corrosive hydrogen halide gas with "secondary disasters", endangering human life, endangering equipment and polluting the environment. Even the use of halogen-free and low-halogen flame-retardant insulating materials can only delay the time when the flame-retardant insulating material is burned into powder. If it continues to be burned, it will gradually become powder and fall off, losing its protective effect. It is easy to be broken down and c...

AI Technical Summary

Problems solved by technology

Once the fire spreads, it will not only produce a large amount of thick smoke, but also produce highly corrosive hydrogen halide gas with "secondary disasters", endangering human life, endangering equipment and polluting the environment

Even the use of halogen-free and low-halogen flame-retardant insulating materials can only delay the time when the flame-retardant insulating material is burned into powder. If it continues to be burned, it will gradually become powder and fall off, losing its protective effect. It is easy to be broken down and cause a short circuit, making it difficult to ensure the safe and smooth communication and power in case of fire

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