How does an electric heater regulate temperature

In the future development of welding technology, it is necessary to study new welding methods, welding materials, and equipment to further improve safety, reliability, and welding quality. For example, by improving existing energy control and electronic technologies such as arc welding, laser, electron beam, and plasma arc, a lightweight and reliable arc tracking method has been developed. Realized digital control of welding machines such as program control and numerical control, and improved the level of welding mechanization and automation. Based on spare parts, a dedicated welding machine has been developed to achieve automation of the entire welding quality monitoring process.
The pipeline electric heater is a heat exchange device that converts into heat energy. It has the advantages of convenient and compact energy supply, automatic temperature control, convenient installation and maintenance, and no pollution. The electronic heater is composed of a tubular container and an electric heating element, which is composed of a temperature control plate (platen). The control console adopts advanced digital circuits, IC triggers, high pressure thyristors, and other components to form a variable temperature constant temperature system to ensure the normal operation of the electric heater.
Due to the fact that the inverter only changes the frequency of the AC power supply, causing a change in the motor speed, i.e. changing the output of the motor, but the heater does not rotate throughout the entire process, the inverter is unable to control the heating speed. In fact, the main methods commonly used to change the heating speed are half wave rectification and voltage transformation of diodes. Using a universal small transformer to adjust the transformer voltage, but the required circuit is complex and the manufacturing cost is high. In addition, currently widely used is to change the heating speed by changing the current value of the diode, and this method has a simple circuit structure and convenient operation. The heating element adopts a straight tube form, replacing the U-shaped structure and using special metal plates, making installation and disassembly convenient. The temperature control adopts silicon controlled rectifier adjustment, PID digital display, and can set the desired temperature within the control temperature range. It automatically maintains a constant temperature and controls the temperature to 5. In addition, the sound and light alarm and various protection functions are limited and can be operated locally or remotely. Special requirements can replace design and manufacturing.