The heating principle of the electric heating tube is as follows: the electric heating tube adopts a U-shaped tubular electric heating element, which is assembled on the flange cover according to the design specifications of different heating media and according to the power configuration requirements. It is inserted into the material to be heated, and the heating element emits A large amount of heat is transferred to the heated medium to increase the temperature to meet the required process requirements.
When the medium temperature reaches the set value required by the process, the control system adjusts the output power of the electric heater after PID calculation according to the temperature sensor signal, and realizes temperature control of the resistive load of the heating element. Make the medium temperature uniform and meet the required requirements. When the heating element is overheated or the liquid level is low, the interlocking protection device of the heating element immediately cuts off the heating power to prevent the heating element from burning out and extend the service life.
Among the factors that affect the quality of the electric heating tube, the quality of the material accounts for a very important reason, so what are the selections of the electric heating tube?
Selection of electric heating pipe
Principles for selecting electric heating pipes: temperature resistance and corrosion resistance. For low-temperature pipes, BUNDY, aluminum pipes, and copper pipes are generally used, and high-temperature pipes are generally stainless steel pipes and Ingle pipes. The Ingle 800 electric heating tube can be used in poor water quality conditions, and the Ingle 840 electric heating tube can have good oxidation resistance and good corrosion resistance under high temperature working conditions.
Many users will encounter electricity leakage when using electric heating tubes, so what are the reasons for electric heating tube leakage?
1. The magnesium oxide powder inside the electric heating tube is damp, the insulation performance is reduced, and the surface of the electric heating tube is charged.
2. Leakage caused by broken or disconnected leads.
3. The environment where the electric heating tube is used is relatively humid.
4. The power socket or jack is damaged and leaks electricity.
5. The ground wire is not properly connected.
6. Leakage caused by improper welding of the terminal.
