Novel positive temperature coefficient (PTC) heating plastic tube and fabrication method thereof

Abstract

The invention relates to a novel positive temperature coefficient (PTC) heating plastic tube and a fabrication method thereof. The novel PTC heating plastic tube comprises a heating tube and an outer sheath, wherein the outer sheath covers outside the heating tube, the heating tube comprises plastic tubes, a PTC heating material and electrode conductors, two strands of spiral electrode conductors wrap outside the plastic tube, are arranged in parallel and have an interval included angle of 180 degrees, the electrode conductors comprise an electrode conductor A and an electrode conductor B, and a PTC heating layer wraps outside the electrode conductors. The novel PTC heating plastic tube is simple in structure, the fabrication process is simple, and the produced PTC heating plastic tube is heated uniformly, has the advantages of high heat conduction performance, small and light dimensional size, energy saving, consumption reduction and huge social benefit, and is suitable for being installed in the outdoors.

Description

technical field [0001] The invention relates to the technical field of electric heating devices, in particular to a novel PTC heating plastic tube and a preparation method thereof. Background technique [0002] Environmental protection continuous monitoring of industrial gas emissions is generally collected by the sampling head and then transported to the analysis instrument for monitoring through the sampling pipe. There is a distance between the sampling head and the analysis instrument. There is generally a distance of about 100 meters between the instruments. Especially in the cold winter, the gas is often frozen and blocked before reaching the destination, making continuous monitoring impossible or condensation affecting the accuracy of gas monitoring and analysis. Therefore, in order to prevent gas liquefaction or fluid freezing and blockage in the pipeline, it is necessary to heat the pipeline to melt the ice. In order to solve the problem of pipeline heating, the t...

AI Technical Summary

Problems solved by technology

Since the heated pipe is circular, while the heating cable is approximately rectangular, and the contact with each other is only linear contact, the contact area is small, and the heat conduction area is small, so the thermal resistance is large and the heat transfer effect is poor; in order to improve the heat conduction effect or enhance the heated The temperature inside the tube must also increase the heating power, and wrap it with a thicker insulation layer for insulation, and cover it with an outer sheath of sufficient thickness

This will not only increase the power consumption, but also make the overall dimension (diameter) of the entire pipe part larger, the pipe part itself is difficult to coil, and the quality is heavy, which is very inconvenient for outdoor installation and construction.

In addition, in some occasions where high temperature is required in the pipeline, the application range of this pipeline component is limited because the required temperature cannot be reached.

Images