Fire-resistant inflaming retarding high-voltage cable

Abstract

The invention discloses a fire-resistant inflaming retarding high-voltage cable which is characterized by comprising an inner core, wherein a low-smoke chlorine-free inner protective jacket is extruded on the outer surface of the inner core; an embossing alloy aluminum-plastic composite tape is longitudinally wrapped outside the low-smoke chlorine-free inner protective jacket; a low-smoke chlorine-free outer protective jacket is coated on the outer surface of the embossing alloy aluminum-plastic composite tape; the inner core can be a single cable core or a plurality of cable cores; and at least three fire-resistant layers are arranged in the cable core. The cable is reasonable in structure and superior in comprehensive performance.

Description

[0001] technical field [0002] The invention relates to a cable, specifically a fire-resistant and flame-retardant high-voltage cable (3.6 / 6 —26 / 35kV) and its manufacturing method. Background technique [0003] In chemical, smelting, commercial, petroleum, mining and other flammable and explosive environments that directly endanger the lives and property of the people and the country, they will not only be destroyed by man, but also destroyed by non-human accidental factors. In the event of a permanent fire, the power supply is often interrupted due to the lack of fire resistance and flame retardancy of the cable or poor fire resistance and flame retardancy, resulting in no power to rescue the equipment, and the lack of fire resistance and flame retardancy of the cable itself aggravates the disaster, eventually causing huge loss of personnel and property . Existing technical process is to adopt a layer of refractory layer, that is, as long as the refractory layer of the c...

AI Technical Summary

Problems solved by technology

[0003]In chemical, smelting, commercial, petroleum, mining and other flammable, explosive environments that directly endanger the lives and properties of the people and the country, not only will they be affected by man-made Destroyed, but also by non-human accidental factors caused by devastating fire, often because the cable is not fire-resistant or flame-retardant or poor fire-resistant and flame-retardant performance, the power supply is interrupted, resulting in no power for rescue equipment, and the cable itself is not fire-resistant Flame retardant aggravated the disaster and eventually caused huge loss of personnel and property

Existing technical process is to adopt a layer of refractory layer, that is, as long as the refractory layer of the cable core is formed, there is no three-level refractory layer of conductor, insulation shielding, and metal shielding; armoring adopts steel strips and steel wires; Corrugated alloy aluminum-plastic composite tape, steel tape and steel wire used for armoring in the prior art process cannot form a smooth and round surface, there are gaps and edges and corners, and an oxygen barrier protective layer cannot be formed

[0004]The production technology of traditional fire-resistant and flame-retardant high-voltage cables (3.6 / 6—26 / 35kV) has the following problems: 1) The poor performance of the material itself leads to poor insulation and mechanical properties ;2) There is only one refractory layer; 3) The flame retardancy of the inner and outer sheaths and filling materials is poor; 4) It is flammable, has good flame retardancy, and poor fire resistance; 5) The structure is unreasonable, and the armor layer cannot form a smooth and round shape There are gaps and corners on the surface, which cannot form an oxygen barrier protective layer

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