Single-head electric heating tube structure principle

The typical structure of a single-head electric heating tube (the most popular structure) is the same as that of an electric heating tube, and is generally composed of five parts: insulator, sealing material, lead rod, filler, heating wire, metal sheath tube, and terminal. The spiral heating wire and the lead rod are located in the center of the metal sheath tube. Its manufacturing process is to insert the spiral heating wire into a seamless steel tube, copper tube or aluminum tube, and the gap is evenly filled with an insulating and heat-conductive oxidizing medium, such as crystalline magnesium oxide powder (alumina or clean quartz sand can also be used) through a multi-tube filling machine. Then use a tube shrinking machine to reduce the tube diameter to make the oxide medium dense (density reaches more than 3.3g/cm3), ensure that the heating wire is isolated from the air, and the center position does not shift and touch the tube wall. In this way. The heat per unit area can be increased by more than ten times. The service life can also be correspondingly increased to more than 10 years. Compared with electric heating elements with the same large heat, tubular electric heating tubes can save 5% of electric heating materials, and the thermal efficiency can reach more than 90%.
Differences
1. Appearance: Single-head electric heating tube has one end (one end) of the wire, while ordinary electric heating tube has two ends of the wire.
2. Internal structure of single-head electric heating tube: The winding method of single-head electric heating tube is different from that of ordinary electric heating tube, especially the imported single-head electric head tube, which is very different from ordinary electric heating tube.
3. Manufacturing process: There are more processes in the manufacturing process of single-head electric heating tube than ordinary electric heating tube, such as shrinking tube, which ensures that single-head electric heating tube has higher power and longer service life than ordinary electric heating tube.