Electric heating pipe head sealing method

Abstract

The invention relates to a part structure of an electric heating device, in particular to an electric heating pipe head multifunctional protecting connector which comprises a pipe connector and a sealing pipe component. The sealing pipe component comprises a section of metal outer pipe and a center conductor placed at the center of the metal outer pipe. One end of the center conductor is provided with a structure which can be connected with an electric heating pipe guiding-out end conductor in a matched mode. The other end of the center conductor is provided with a guiding-out rod which can be connected with an external power supply. The position between the center conductor and the metal outer pipe is provided with a sealing sleeve made of polytetrafluoroethylene material for sealing and filling. The metal outer pipe and a tubular outer shell of an electric heating pipe can be connected in a sealing mode through the pipe connector. Dielectric can be effectively prevented from leaking from an electric heating pipe inner core, a single electric heating pipe can be subjected to overcurrent protection, external moisture can be effectively prevented from entering the electric heating pipe inner core, and the insulating property of insulated dielectric is guaranteed.

Description

technical field [0001] The invention relates to a component structure of an electric heating device, in particular to a multifunctional protective connector for an electric heating pipe head and a sealing method for the electric heating pipe head. Background technique [0002] In the electric heater with electric heating tube, the end of the electric heating tube is usually connected to the power terminal in the junction box through the lead-out rod, and the tubular shell of the electric heating tube is usually sealed with the window wall to ensure that the container is heated Media will not leak. The existing installation method of the electric heating tube has the following defects: 1. In actual use, the shell of the electric heating tube located in the container may rupture due to overheating, and the heated medium may enter the shell of the electric heating tube, and then pass through the shell of the electric heating tube. The thermally conductive and insulating medium...

AI Technical Summary

Problems solved by technology

The existing installation method of the electric heating tube has the following defects: 1. In actual use, the shell of the electric heating tube located in the container may rupture due to overheating, and the heated medium may enter the shell of the electric heating tube, and then pass through the shell of the electric heating tube. The thermally conductive and insulating medium (such as magnesium oxide powder) in the casing seeps out from the end of the electric heating tube, resulting in material leakage; 2. For some high-power industrial electric heaters, a large number of electric heating tubes are usually used to work at the same time. The overcurrent protection of electric heaters usually only monitors the overall current of all electric heating tubes, so when a single electric heating tube is overcurrent, it is difficult for the overcurrent protection system to detect and protect it in time, resulting in overcurrent damage to the electric heating tube

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