High temperature constant power electric tracing band

Abstract

The invention proposes a high temperature constant power electric tracing band comprising an inner sheath insulating layer. The inner sheath insulating layer is provided with a core wire group therein. The core wire group includes a first core wire, a second core wire and a third core wire which extend along the length direction of the electric tracing band. The first core wire, the second core wire and the third core wire are arranged in parallel. The first core wire, the second core wire and the third core wire are elliptical in cross section and the first core wire, the second core wire and the third core wire have the same cross-sectional area. The second core wire is located between the first core wire and the third core wire and long axes of the first core wire, the second core wire, the third core wire are located on the same line. Both ends of the second core abut against the first core wire and the third core wire, respectively. The periphery of the inner sheath insulating layer is wound spirally with a heating wire along the length direction of the electric tracing band to form a heating wire layer. The outside of the heating wire layer is wrapped with an outer sheath. The outside of the outer sheath is wrapped with a metal braid layer. The outside of the metal braid layer is wrapped with a reinforced sheath. According to the invention, the heating temperature is stable and the heating effect is good.

Description

Technical field [0001] The invention relates to the technical field of electric heating cables, in particular to a high-temperature constant-power electric heating cable. Background technique [0002] Electric heating cable is a new type of high-tech product. Since it entered the application field in the 1970s, it has the advantages of preventing overheating, easy use and maintenance, and energy saving. It is suitable for temperature control, heat tracing, and heat preservation of pipelines, equipment and containers. , Heating, especially when the materials are easy to decompose, deteriorate, crystallize, agglomerate and freeze, it has been widely used in petroleum, chemical, electric power, metallurgy, light industry, food, refrigeration, construction, gas, agricultural and sideline products production and other products. Industries. The heating temperature of the existing high-temperature electric tracing cable can only reach 160°C. Due to long-term operation in a high-tempera...

AI Technical Summary

Problems solved by technology

The heating temperature of the existing high-temperature electric heating cables can only reach a maximum of 160°C. Due to long-term work in a high-temperature environment, the existing high-temperature electric heating heating is unstable and cannot meet the working requirements

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