The function of electric heating elements in air heaters
Leave a message
The function of electric heating elements in air heaters
The air heater is composed of multiple tubular electric heating elements, simplified elements, and guide plates. The tubular electric heating element is composed of high-temperature resistance wires placed inside the metal tube, and crystalline magnesium oxide powder with good insulation and thermal conductivity is tightly filled in the gaps. The tubular electric heating element is used as the heating element, which has an advanced structure and high thermal efficiency. The machine digital temperature control cabinet adopts a digital temperature regulator, integrated circuit trigger, high-power thyristor, and temperature measurement element to form a measurement, adjustment, and control circuit,
During the electric heating process, the temperature measuring element of the air heater sends the electrical signal of the outlet temperature of the air electric heater to the digital temperature regulator for amplification and comparison, and displays the measured temperature value. At the same time, it outputs a voltage signal of 0-10V to the input end of the thyristor trigger component, controls the output pulse phase, and thus controls the conduction angle of the thyristor, making the control cabinet have good control accuracy and adjustment characteristics. The use of interlocking devices can remotely start and stop the air electric heater.
When installing temperature measuring elements for air heaters, the corresponding positions of the "+" and "-" terminals connected to the control cabinet wiring terminals should be distinguished. Before use, the cold insulation resistance between the power supply terminal and the metal shell of the heater should be measured to be no less than 2M Ω, and the relative humidity of the operating environment should not exceed 85%. The outlet and inlet of the power cord should be firm and reliable, and not loose. Before use, first check whether the power cord and temperature measuring element output connection are correct, whether the control cabinet components and screws are loose or damaged. If there are any abnormalities, tighten or replace them in a timely manner. After confirming that there are no errors, power on and test run can be carried out.
Www.superbheater.com
