Flange electric heating pipe (also known as plug-in electric heater): It is a U-shaped tubular electric heating element, which is assembled on the flange cover according to the design specifications of heating different media, according to the requirements of power allocation, and inserted into the material to be heated. When the heating element works, a large amount of heat is transmitted to the heated medium to raise the temperature of the medium to meet the required technological requirements. When the medium temperature reaches the set value of the technological requirement, the control system adjusts the output power of the electric heater according to the temperature sensor signal, and the flange heater manufacturer adjusts the output power of the electric heater after the PID calculation to realize the temperature control of the resistive load of the heating element. When the heating element is over-temperature or low liquid level, the interlocking protection device of the heating element immediately cuts off the heating power supply to avoid burning out of the heating element and prolong its service life.

Flange electric heat pipe is heated centrally on the flange by welding multiple heating pipes. It is mainly used for heating in open and closed solution box and circulating system. It has the following advantages: high surface power, which makes the surface load of air heating 2-4 times.

Flange electric heat pipe is highly dense and compact in structure. Because the whole is short and dense, it has good stability and no bracket is needed for installation. Argon arc welding is mostly used to connect the electric heat pipe to the flange, and the fastening device can also be used, that is, each electric heat pipe is welded by fasteners. Then the flange cover is locked with nuts. The pipe is welded by argon arc welding in the fastener and never leaks. The fastener seal adopts scientific technology. Single replacement is very convenient.