A heat insulation self-adjusting high and low temperature resistant cable

Abstract

The invention discloses a heat-insulating self-adjusting high and low temperature resistant cable, which belongs to the technical field of cables and can be provided with a special self-adjusting sheath. Under normal circumstances, the self-adjusting sheath has good heat insulation performance and can effectively reduce The influence of ambient temperature on the cable body, but when the temperature of the cable body itself is too high, the self-adjusting sheath can be adjusted spontaneously, so that the pushing spring drives the heat shield to slide into the storage groove, and the movable sliding rod drives the heat conducting rod Move up to the contact with the heat conduction block, so that the heat on the surface of the cable body can be dissipated to the outside through the heat collecting layer, the heat conduction telescopic rod, the heat conduction rod, and the one-way heat transfer rod in turn, so as to quickly dissipate heat from the cable body and prevent the cable body from Burned out, and the one-way heat transfer rod has a one-way heat conduction function, which can prevent the external temperature from being higher than the surface temperature of the cable body, resulting in a further increase in the surface temperature of the cable body, which greatly improves the practicability.

Description

technical field [0001] The present invention relates to the technical field of cables, and more particularly, to a heat-insulating self-adjusting high-low temperature resistant cable. Background technique [0002] A cable is a wire used to transmit power or information from one place to another, usually consisting of a cable core, reinforcing steel wires, fillers and sheaths. Cable is an indispensable basic equipment for energy transmission and information transmission. From today's rapid development of social informatization and electrification, cables have become one of the most important basic products in economic construction. The cable industry is also a supporting industry. The main industries of the national economy have requirements for cable performance. The national economy determines that most industries are related to cables, and their industrial status is very important. [0003] The service life of the cable is closely related to the ambient temperature. Too h...

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Problems solved by technology

[0003] The service life of the cable is closely related to the ambient temperature. Too high or too low temperature will seriously affect the service life of the cable, especially for cables used in areas with large temperature differences. It is not only necessary to prevent the cable from being burned out due to high temperature, but also to prevent the cable from being The cables in the prior art are usually equipped with a sheath with good heat insulation performance to reduce the influence of the ambient temperature on the cable. However, because the sheath does not have the function of adapting and adjusting, when the load current of the cable , the cable itself will also emit a lot of heat. At this time, the sheath with good heat insulation performance will hinder the heat dissipation of the cable, causing the cable to be burned due to high temperature.

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