Self-cooling power cable

Abstract

The invention discloses a self-cooling power cable, which comprises a plurality of cable cores, wherein the plurality of cable cores are arranged around a sealed flexible metal tube into which cooling medium can be introduced; and a temperature measuring line is arranged in the flexible metal tube. According to the self-cooling power cable disclosed by the invention, the sealed flexible metal tube is put in the middle of the original product; the temperature measuring line is put in the metal tube and used for detecting the practical temperature of the whole cable; water flow possibly flows through the metal tube; once the temperature of the cable is up to the pre-set alarm temperature, alarm equipment connected to the temperature measuring line gives an alarm automatically and injects water in the metal tube at the first time to reduce the temperature; therefore, the temperature of the cable is rapidly decreased; breakdown and burnout of the cable caused by temperature increasing can be avoided; fire disasters caused by temperature increasing of the cable can be prevented; and the self-cooling power cable disclosed by the invention can be used in all places of electric equipment and has good practicability and economy.

Description

technical field [0001] The invention belongs to the technical field of power cables, and in particular relates to a self-cooling power cable. Background technique [0002] Power cables are used for the connection between high-voltage transmission and transformation lines and electrical equipment, and play the role of power transmission. Power cables are widely used in factories, schools, governments, petrochemicals, shopping malls and other places. [0003] Such as figure 1 As shown, commonly used power cables are generally composed of a conductor 4, an insulating layer 3, a wrapping tape 2 and an outer sheath 1. The number of cable cores varies from 1 core to 5 cores, and the shape of the conductor 4 can be circular, fan-shaped or semi- Round shape, according to the needs of the place of use, it can also be made into steel tape armored type. With the continuous increase of electrical equipment in the line, the current that the cable bears is also increasing. Secondly, wit...

AI Technical Summary

Problems solved by technology

With the continuous increase of electrical equipment in the line, the current that the cable bears is also increasing. Secondly, with the passage of time, the cable will age, and its carrying capacity will also decrease to varying degrees. Once the current Exceeding the rated current carrying capacity, the cable will heat up, and the cable will break down and burn out after reaching a certain temperature, which will cause a fire in serious cases, while ordinary power cables cannot achieve self-measurement and self-cooling functions

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