Heating structure and working principle of pipe heater

I believe many people have heard of pipe heaters. It is an energy-saving device for preheating materials. It is installed before the material equipment and can directly heat the material, so that the material is circulated and heated at high temperature, ultimately achieving the purpose of saving energy. Pipe heaters are widely used in the preheating of heavy oil, clean oil, asphalt and other fuel oils.

(1) Pipe heater heating structure

Pipe heaters are composed of multiple tubular electric heating elements, cylinders, guide plates and other parts. The tubular electric heating element is a high-temperature resistance wire placed in a metal tube, and the gap is tightly filled with crystalline magnesium oxide powder with good insulation and thermal conductivity. The tubular electric heating element is used as a heating element, which has the characteristics of advanced structure, high thermal efficiency, good mechanical strength, corrosion resistance and wear resistance.

(2) Working Principle

The pipe heater uses a digital temperature controller, a solid-state relay, and a temperature measuring element to form a measurement, regulation, and control circuit. During the electric heating process, the temperature measuring element sends the pipe heater outlet temperature electrical signal to the digital temperature controller for amplification. After comparison, the measured temperature value is displayed and the signal is output to the input end of the solid-state relay to control the heater, so that the control cabinet has good control accuracy and regulation characteristics. The pipe heater can be started and stopped remotely using the interlocking device.