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荆门2W-500-50BS

2021-06-05 15:38:46
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荆门2W-500-50BS
Detailed introduction:

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Type of heater.


The thermostat is based on the principle of incompressibility and thermal expansion and contraction of liquids. The heat source adopts a self-operated temperature regulating valve. When the temperature of the controlled object is lower than the set temperature, the temperature bulb fluid shrinks, and the force acting on the actuator's push rod decreases. The valve core assembly opens the valve with spring force, increasing steam and The flow of heating medium such as hot oil increases the temperature of the controlled object until the temperature of the controlled object reaches the set value, the valve is closed, after the valve is closed, the temperature of the controlled object drops, the valve opens again, and the heating medium re-enters the heat exchanger , Increase the temperature again to keep the temperature of the controlled object constant. The opening size of the plastic solenoid valve is related to the difference between the actual temperature of the controlled object and the set temperature.


Cooling type


The working principle of the refrigeration automatic temperature control valve can refer to the heating automatic temperature control valve, but when the spool element opens and closes the automatic temperature control valve under the action of the spring force of the actuator, the valve body passes through the cold medium and is mainly used for the cooling device. temperature control.


Working principle of automatic flow regulating valve.


After the controlled medium is input to the valve, the pressure P1 before the valve is input to the lower membrane chamber through the control pipeline, and the upper membrane chamber is input into the upper membrane chamber with the pressure Ps after throttling by the throttle valve. The difference between Ps and Ps is △P1=P1- Ps is called effective pressure. The difference between the thrust of P1 and Ps acting on the diaphragm and the spring reaction force is balanced, and the relative position of the valve core and the seat can be determined, so that the flow rate through the valve can be determined. As the flow rate of the high-pressure solenoid valve through the valve increases, that is, △Ps increases, and the result is that Ps increases, which act on the lower membrane chamber and the upper membrane chamber respectively, causing the valve core to move toward the valve seat, thereby changing the valve core and valve The flow area between the seats increases Ps. The increased Ps acts on the diaphragm. The thrust plus spring reaction force and P1 act on the diaphragm to form a balance at the new position to achieve the purpose of flow control. opposite of this.


2W-500-50BS

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