Fire-proof electric wire and manufacturing method thereof

Abstract

The invention discloses a fire-proof electric wire which resists aging, does not self-ignite, is safe and free of fire risks and self-igniting pollution, and is capable of normally supplying electricity in open fire of 850 DEG C. The fire-proof electric wire does not self-ignite in the process of bearing overload currents or short-circuit currents to the process of fusing of a copper conductor, and liquid copper produced in the fusing process does not flow out. The fire-proof electric wire integrates with the advantages of being economic, practical, saving in energy, environmental friendly and the like, and prevents the fire when the fire is not burned. A thermal insulation fire-proof layer, a fire-proof insulation layer and a waterproof insulation layer are sequentially wrapped outside the copper conductor. The invention further provides a manufacturing method of the fire-proof electric wire. The manufacturing method comprises the steps that the thermal insulation fire-proof layer which is made of ceramic fiber yarn is wound outside the copper conductor; the fire-proof insulation layer which is woven by alkali-free glass fiber yarn in a crossing mode is arranged outside the thermal insulation fire-proof layer; the waterproof insulation layer which is squeezed and wrapped by rubber compounds or polyvinyl chloride compounds is further arranged outside the fireproof insulation layer.

Description

technical field [0001] The invention relates to electric power wires, in particular to a fireproof and refractory wire; the invention also relates to a manufacturing method of the fireproof and refractory wire. Background technique [0002] The power wires currently used in the market are all longitudinally wrapped with a plastic insulating layer on the periphery of the conductor. The plastic insulation layer has good insulation performance, but it is a flammable material with low temperature resistance and easy aging; when the line is overloaded or aged and short-circuited, the high temperature generated by the conductor heating will melt the plastic insulation layer, resulting in zero and phase conductors in the sheath line. A short-circuit spark is generated between them, and the melted plastic insulation layer is ignited, causing a spontaneous fire of the wire. Contents of the invention [0003] The object of the present invention is to provide a fireproof and refrac...

AI Technical Summary

Problems solved by technology

The plastic insulation layer has good insulation performance, but it is a flammable material with low temperature resistance and easy aging; when the line is overloaded or aged and short-circuited, the high temperature generated by the conductor heating will melt the plastic insulation layer, resulting in zero and phase conductors in the sheath line. A short-circuit spark is generated between them, igniting the melted plastic insulation layer and causing a spontaneous fire of the wire

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