Self-reliance type temperature working principle of the pneumatic control valve

Heating type pneumatic control valve for temperature is according to the principle of heat bilges cold shrink and incompressible fluid. Heating self-reliance type pneumatic control valve, temperature when the temperature of the controlled object is lower than the set temperature, the temperature inside the package liquid contraction, the force effect on the actuator push rod is reduced, the valve core components under the action of spring force to make the valve opened, to increase the flow of steam and hot oil heating medium, the temperature rise of the object, and until the temperature of the object to the set value, the valve is closed. Self-reliance temperature pneumatic control valve is turned off, the controlled temperature drops, the valve and open, the heating medium and to enter into heat exchanger, and the temperature rise, so that make the temperature of the object as a constant value. The valve opening size and the controlled object of the actual temperature and set temperature difference. Cooling with self-reliance type temperature working principle of the pneumatic control valve can be reference to heating self-reliance type pneumatic control valve, temperature only when the valve core components in the actuators and the spring force under the action of opening and closing valves closed and temperature on the contrary, the body through the cold medium, mainly used in cooling device of temperature control.