Aluminum core polyvinyl chloride insulating and flame-retardant power cable

Abstract

The invention discloses an aluminum core polyvinyl chloride insulating and flame-retardant power cable. The power cable comprises an aluminum conductor. A steel belt shielding layer is extruded outside the aluminum conductor, then a polyvinyl chloride insulating layer wraps the steel belt shielding layer, a high-electrical-property calcinated clay flame-retardant layer is extruded outside the polyvinyl chloride insulating layer, a nanometer environment-friendly fireproof mineral insulating layer is extruded outside the high-electrical-property calcinated clay flame-retardant layer, a high-strength halogen-free low-smoke polyolefin ribbon is extruded outside the nanometer environment-friendly fireproof mineral insulating layer, a dual-layer improved type glass fiber belt cooling layer wrapsthe outer side of the high-strength halogen-free low-smoke polyolefin ribbon, a flame-retardant corrugated composite paperboard is arranged outside the dual-layer improved type glass fiber belt cooling layer, a ceramic polyolefin outer protection layer is extruded outside the flame-retardant corrugated composite paperboard, and the ceramic polyolefin outer protection layer is coated with a nanometer radiation heat loss and cooling coating layer. The power cable has the advantages of being good in shielding property, high in interference resistance, insulativity, flame retardance and fire resistance and the like.

Description

technical field [0001] The invention relates to the field of cables, in particular to an aluminum-core polyvinyl chloride insulated flame-retardant power cable. Background technique [0002] With the development of the power industry, DC cables are more and more used in various fields, such as subways and nuclear power plants, due to their high transmission rate and small line loss; convenient adjustment of current and change of transmission direction; low installation and maintenance costs. The safety and reliability requirements of electrical equipment such as shopping malls, hospitals, and intelligent buildings are getting higher and higher, and it is urgent to develop a new generation of environmentally friendly DC cables. [0003] With the frequent occurrence of fire accidents, people's awareness of the fire hazards of wires and cables continues to deepen, and the relevant departments have higher and higher requirements for the performance of wires and cables such as fi...

AI Technical Summary

Problems solved by technology

[0004] The development of fire-resistant hoisting medium-voltage cables in China started relatively late, and the test levels of technical equipment of various manufacturers are uneven. In addition, customers have a strong demand for medium-voltage fire-resistant cables in recent years, and the technical requirements for cables are getting higher and higher, resulting in many Due to limited technical strength, the manufacturer cannot design and produce medium-voltage fire-resistant power cable products that meet the technical requirements of high-rise buildings

Images