Cold or hot joint for carbon fiber heating cable

Abstract

The invention provides a cold or hot joint for a carbon fiber heating cable. The cold or hot joint comprises a main joint, wherein the main joint is provided with a branch and comprises a live wire, a zero line and a ground wire; a first insulating layer and a first injection layer wrap the outer sides of the live wire, the zero line and the ground wire; the branch comprises a live wire connecting line, a zero line connecting line and a ground wire connecting line; a second insulating layer and a second injection layer wrap the outer sides of the live wire connecting line, the zero line connecting line and the ground wire connecting line; one end of the live wire connecting line is connected with the live wire and the other end extends out of the second injection layer 20-30cm along the branch; one end of the zero line connecting line is connected with the zero line and the other end extends out of the second injection layer 20-30cm along the branch; and one end of the ground wire connecting line is connected with the ground wire and the other end extends out of the second injection layer 20-30cm along the branch. According to the cold or hot joint, the ground wire is added, so that the power consumption safety is improved. Various connecting lines extend out of the joint and are connected with the carbon fiber heating cable outside the joint, so that the distance between a cold wire and a hot wire is increased; and the air-tightness of joint injection is improved.

Description

technical field [0001] The invention relates to the technical field of cable joints, in particular to a hot and cold joint of a carbon fiber heating cable. Background technique [0002] Carbon fiber is a kind of fibrous carbon material, which has the characteristics of corrosion resistance, oxidation resistance (metal is easy to oxidize and cause local breakdown), high stability, and long life (generally able to achieve stable work for 100,000 hours at 300 degrees Celsius). Its strength is higher than that of steel, its density is lower than that of aluminum, it is more corrosion-resistant than stainless steel, more resistant to high temperature than heat-resistant steel, and can conduct electricity like copper. It is a new material with many valuable electrical, thermal and mechanical properties. [0003] Because carbon fiber cables or carbon fiber heat rails can obtain a large heating area and heat evenly, they have received widespread attention. Larger heating devices su...

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a carbon fiber heating cable cold and hot joint, which solves the problems of poor reliability and low safety of the joint in the prior art

Images