a fire cable

Abstract

The invention discloses a fire-fighting cable which comprises a fireproof cable with a copper pipe sleeve. Multiple fire-fighting water spray copper pipes are annularly and closely arranged on the outer circumference of the copper pipe sleeve, and the fire-fighting water spray copper pipes are bound and fixed to the outer circumference of the copper pipe sleeve. The pipe wall of each fire-fighting water spray copper pipe is provided with water spray holes. The fire-fighting water spray copper pipes are bound and fixed to the outer circumference of the copper pipe sleeve by a copper wire which is sparsely wound outside the fire-fighting water spray copper pipes. The diameter ratio of the fire-fighting water spray copper pipes to the copper pipe sleeve is 1:4-6. The fire-fighting cable can work normally in a high-temperature environment of fire for a long time. Water can be sprayed into a fire through the cable.

Description

technical field [0001] The invention relates to a cable, in particular to a fire-fighting cable that can spray water out of the cable when a fire occurs. Background technique [0002] At present, domestic high-rise buildings, petroleum, mining, metallurgy, ships, power stations, subways, tunnels, large shopping malls, high-rise residential buildings and other places that require high fire safety conditions need to use fireproof cables. Most of the fire-proof cables in the prior art use materials such as inorganic mineral insulation, copper or aluminum tube protection, and low-smoke halogen-free sheaths. This kind of fire-proof cable can only delay the time for the cable to be burned. In the process, the low-smoke halogen-free sheath of the fireproof cable will be burned into powder and fall off, and the armored sheath of the copper pipe and aluminum pipe will gradually melt. Insulation performance, resulting in breakdown short circuit, unable to ensure the safe and smooth c...

AI Technical Summary

Problems solved by technology

Fireproof cables in the prior art mostly use materials such as inorganic mineral insulation, copper or aluminum tube protection, and low-smoke halogen-free sheathing. This kind of fireproof cable can only delay the time when the cable is burned. In the process, the low-smoke and halogen-free sheath of the fireproof cable will be burnt to powder and fall off, and the copper tube and aluminum tube armored sheath will gradually melt. Insulation performance, resulting in breakdown and short circuit, can not guarantee the safety and smoothness of communication or power transmission in case of fire

Moreover, the fireproof cables in the prior art only have a fireproof effect, but do not have a fire extinguishing function

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