Low-smoke and halogen-free cables for easy maintenance

Abstract

The invention relates to a maintenance-facilitating low-smoke halogen-free cable comprising a conductor, an insulating layer sleeving the outer side of the conductor and a protective layer arranged onthe outer side of the insulating layer. The protective layer comprises a first protective sleeve sleeving the outer side of the insulating layer and a second protective sleeve sleeving the outer sideof the first protective sleeve. The first protective sleeve is a fluorescent tube which is provided with multiple negative pressure tubes. The negative pressure tubes are provided with multiple negative pressure tubes. The negative pressure tubes are internally provided with a pressure sensor. The fluorescent tube is uniformly provided with multiple coils which are closed-loop and electrically connected with the negative pressure tubes along the length direction of the fluorescent tube. Light-emitting diodes are connected on the coils. The light-emitting diodes are coupled in series with thepressure sensor. Multiple capillaries communicated with the adjacent negative pressure tubes are arranged on the fluorescent tube. The inner side wall of the second protective sleeve is in close contact with the outer side wall of the first protective sleeve. The maintenance-facilitating low-smoke halogen-free cable has the effect of facilitating cable maintenance.

Description

technical field [0001] The invention relates to the technical field of low-smoke and halogen-free cables, in particular to a low-smoke and halogen-free cable that is convenient for maintenance. Background technique [0002] Low-smoke halogen-free wire sheath is composed of thermoplastic or thermosetting material with low smoke emission when heated and halogen-free itself. [0003] Low-smoke and halogen-free materials reduce the generation of toxic and corrosive gases when they burn. Low-smoke and halogen-free materials are often used in poorly ventilated environments such as airplanes, train carriages, or ships. Low-smoke, halogen-free materials are also commonly used in the railway industry, because there will be high-voltage lines under the railway or signal lines that transmit the position of the train. The use of low-smoke and halogen-free materials also reduces the accumulation of toxic gases when the circuit is damaged due to fire or short circuit. [0004] In the e...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned existing technical solutions have the following defects: in the prior art, new rubber materials are used to improve the good fire-resistant and flame-retardant properties of the cables, and the current low-smoke and halogen-free cables are used. If the external protection The cracking of the layer will cause the insulation layer outside the conductor to be unable to be protected. In this way, the insulation layer at the place may be damaged during use, resulting in leakage and danger. The inspection of the protective layer on the outside of the cable is time-consuming and laborious, so how to inspect the cracks on the cable more quickly is a problem that needs to be solved

Images