Low-temperature self-heating type cable anti-freezing protective sleeve

Abstract

The invention discloses a low-temperature self-heating type cable anti-freezing protection sleeve, which belongs to the technical field of cable protection sleeves, and comprises a cable and a protection sleeve mechanism, the protection sleeve mechanism sleeves the outer side of the cable, and the protection sleeve mechanism comprises a water absorption layer, a trigger layer, a heating layer, a thermal insulation layer and an insulation layer, the triggering layer comprises a double-layer hollow first elastic sleeve, the first elastic sleeve is filled with a first filler, the inner side wallof the first filler is filled with a plurality of spherical air bags which are annularly and evenly distributed, the outer side of the triggering layer is fixedly connected with a heating layer, and the heating layer comprises a double-layer hollow second elastic sleeve; and the second elastic sleeve is filled with a second filling agent. When the temperature is low, heat can be generated spontaneously and transferred to the surface of the cable, the surface temperature of the cable is increased, the cable is prevented from being frozen, cracked and damaged, the cable is protected more comprehensively, and the service life of the cable is prolonged.

Description

technical field [0001] The invention relates to the technical field of cable protective sheaths, in particular to a low-temperature self-heating antifreeze protective sheath for cables. Background technique [0002] Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the main line of the power system, including 1-500KV and above various voltage levels and various insulated power cables. Cable is an indispensable basic equipment for energy transmission and information transmission. Today, with the rapid development of social informatization and electrification, wire and cable have become...

AI Technical Summary

Problems solved by technology

[0003] In order to prevent the cable from being damaged, a cable protective sheath is usually provided on the outer surface of the cable, but the cable protective sheath in the prior art usually only has functions such as insulation, waterproof, and corrosion resistance, and when the temperature is low, it cannot provide protection for the cable. The cable provides a function of heat preservation and heating. The cable is in a low temperature environment for a long time and is easily damaged by freezing and cracking, resulting in a reduction in the service life of the cable.

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