Single-core cross-linked polyethylene insulated double-layer steel-tape armored polyvinyl chloride sheath power cable

Abstract

The invention discloses a single-core cross-linked polyethylene insulated double-layer steel-tape armored polyvinyl chloride sheath power cable, and the cable comprises a conductor located at the center of the cable. The conductor, a cross-linked polyethylene insulated layer wrapping the conductor in an extruding manner and a multilayer tightening belt winding around the cross-linked polyethylene insulated layer form a cable core. The exterior of the cable core is provided with a heat tape, and the exterior of the heat tape is provided with a first steel tape armored layer. The first steel tape armored layer is wrapped by a rubber and plastic internal sheath, and the exterior of the rubber and plastic internal sheath is provided with a steel wire shielding layer. The exterior of the steel wire shielding layer is provided with a mica frame-retardant tape, and the exterior of the mica frame-retardant tape is provided with a second steel tape armored layer. Finally, the outermost layer of the cable is provided with a polyvinyl chloride external sheath in an extruding manner. The cable is large in insulation reliability, is good in flame-retardant effect, is large in current-carrying capacity, can prevent the damage to animal and plant, and can improve the wear resistance.

Description

technical field [0001] The invention relates to the field of cables, in particular to a single-core cross-linked polyethylene insulated double-layer steel tape armored polyvinyl chloride sheathed power cable. Background technique [0002] The current-carrying capacity of the cable is usually related to the cross-sectional area of ​​the conductor core. When the current increases, the temperature of the conductor will increase. When the temperature of the insulating layer covered by the conductor exceeds the upper limit, the performance of the insulating layer will change, thereby The insulation reliability of the insulating layer is greatly reduced, which affects the service life of the cable. [0003] The existing ordinary cables have problems of poor structural stability and flammability, so the safety level of electrical circuits and the flame retardancy of cables have attracted more and more attention. [0004] At the same time, even if the cable has good temperature res...

AI Technical Summary

Problems solved by technology

[0002] The current-carrying capacity of the cable is usually related to the cross-sectional area of ​​the conductor core. When the current increases, the temperature of the conductor will increase. When the temperature of the insulating layer covered by the conductor exceeds the upper limit, the performance of the insulating layer will change, thereby The insulation reliability of the insulating layer is greatly reduced, which affects the service life of the cable

[0003] The existing ordinary cables have problems of poor structural stability and flammability, so the safety level of electrical circuits and the flame retardancy of cables have attracted more and more attention

[0004] At the same time, even if the cable has good temperature resistance, it cannot prevent the damage of animals and plants in places with high safety, and may also bring large indirect losses to power supply.

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