An easy-to-dissipate large-capacity power cable

Abstract

The invention provides an electric power cable with easy heat dissipation and high carrying capacity. The electric power cable comprises a central supporting core, an inner supporting pipe, a plurality of first wire cores and a plurality of second wire cores; the central supporting core is positioned in the central position of the cable; the exterior of the central supporting core is sleeved with a flame-retardant elastic pipe; the inner supporting pipe is arranged on the exterior of the central supporting core; multiple arc-shaped supporting parts are arranged on the inner side of the inner supporting pipe; the multiple first wire cores are arranged in the multiple arc-shaped supporting parts respectively; one second wire core is arranged in the gap between adjacent two arc-shaped supporting parts; heat generated in operation of the first wire cores and the second wire cores is dispersed around the central supporting core without being concentrated on the middle part of the cable; in addition, the heat can be dissipated quickly to the outer side, so that the internal environment of the cable can be balanced in temperature; the exterior of the central supporting core is sleeved with the flame-retardant elastic pipe, so that the flame retardancy and high temperature resistance of the cable are improved; and when the cable is extruded, the flame-retardant elastic pipe and the high-temperature-resistant flame-retardant material can buffer the extrusion force through deformation, so that damage of the first wire cores and the second wire cores caused by extrusion can be prevented.

Description

technical field [0001] The invention relates to the technical field of electric cables, in particular to an easy-to-dissipate heat-dissipating large-capacity electric cable. Background technique [0002] The existing high-capacity power cables have problems of poor structural stability and flammability, which adds a certain degree of difficulty to the design of power cables. Therefore, the safety level of electrical lines and the flame-retardant problems of cables have increasingly aroused people's attention. Attention, the flame retardancy of cables has become a comprehensive development direction of the cable industry. At the same time, the current-carrying capacity of the power cable is usually related to the cross-sectional area of ​​the conductor core. When the current increases, the temperature of the conductor will rise. Once the temperature of the insulating layer covered by the conductor exceeds the upper limit, the performance of the insulating layer will deteriora...

AI Technical Summary

Problems solved by technology

[0002] The existing high-capacity power cables have problems of poor structural stability and flammability, which adds a certain degree of difficulty to the design of power cables. Therefore, the safety level of electrical lines and the flame-retardant problems of cables have increasingly aroused people's attention. Attention, the flame retardancy of cables has become a comprehensive development direction of the cable industry

At the same time, the current-carrying capacity of the power cable is usually related to the cross-sectional area of ​​the conductor core. When the current increases, the temperature of the conductor will rise. Once the temperature of the insulating layer covered by the conductor exceeds the upper limit, the performance of the insulating layer will deteriorate. Change, so that the insulation reliability of the insulation layer is greatly reduced, affecting the service life of the power cable

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