Copper-core cross-linked polyethylene insulated steel-tape armoring polyvinyl chloride sheath fireproof power cable

Abstract

The invention discloses a copper-core cross-linked polyethylene insulated steel-tape armoring polyvinyl chloride sheath fireproof power cable. The copper-core cross-linked polyethylene insulated steel-tape armoring polyvinyl chloride sheath fireproof power cable comprises a cable core, wherein the cable core is formed by wrapping an improved glass fiber tape after a pair of insulation wires are pair-twisted, a high-strength halogen free low smoke polyolefin binding tape is bonded outside a cable cores and is tightly bonded, a high-flame retardant tape adhesive heat shrinkage tube is arranged outside the high-strength halogen free low smoke polyolefin binding tape in an extruded manner, a steel-tape armoring layer is woven outside the high-flame retardant tape adhesive heat shrinkage tube,a polyvinyl chloride inner sheath of which an inner surface is coated with a fireproof coating material wraps the steel-tape armoring layer, a nanometer radiation cooling coating layer is coated on anouter surface of the polyvinyl chloride inner sheath, a dual-sided synthesis mica tape wraps the nanometer radiation cooling coating layer, and a polyvinyl chloride outer sheath is finally arranged outside the dual-sided synthesis mica tape in an extruded manner.

Description

technical field [0001] The invention relates to the field of wires and cables, in particular to a fire-resistant power cable with a copper core cross-linked polyethylene insulated steel tape armored polyvinyl chloride sheath. Background technique [0002] Fire refers to the disaster caused by burning out of control in time and space. Among various disasters, fire is one of the main disasters that most frequently and commonly threaten public safety and social development. [0003] With the continuous development of society, while the social wealth is increasing, the risk of fire is also increasing, and the danger of fire is also increasing. According to statistics, the average annual fire loss in my country in the 1970s was less than 250 million yuan, and the average annual fire loss in the 1980s was less than 320 million yuan. In the 1990s, especially since 1993, the direct property losses caused by fires have risen to an average of more than one billion yuan per year. Ac...

AI Technical Summary

Problems solved by technology

[0004] In a fire, the power supply is often interrupted due to the poor fire resistance and flame retardancy of the cable, which hinders the rescue work

The flame retardant and fire resistance of the cable itself is poor, resulting in the low transmittance of the smoke and the release of toxic gases, exacerbating the disaster, and eventually causing huge loss of personnel and property

[0005] Cables will age during long-term use, which can easily cause fires. Ordinary plastic pipes have no fire protection function in case of fire, but will increase the fire intensity and seriously affect the safety of pipelines.

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