The solenoid valve FRD.WJA3.002 is an indispensable commander in the actuator control circuit of the power plant. Today, let’s talk about its specific role in the control circuit and see how this solenoid valve ensures the stability and safety of the turbine operation.

The main task of the actuator control circuit of the steam turbine is to accurately control the oil pressure entering the oil motor according to the load demand of the steam turbine, and then adjust the steam intake of the steam turbine to ensure the stability of the turbine speed and output power.

In the control circuit, the role of the solenoid valve FRD.WJA3.002 is to respond quickly to the electrical signal from the control system (such as DEH or DCS) to open or close the oil circuit to the actuator. When the steam turbine needs to increase or decrease the steam intake, the control system will send a corresponding command signal. After receiving the signal, the solenoid valve will act quickly to adjust the opening and closing degree of the oil circuit, thereby changing the oil pressure of the actuator and realizing precise control of the steam inlet valve of the steam turbine.

The rapid response capability of the solenoid valve FRD.WJA3.002 is the key to its role in the control loop. It can complete the opening and closing action within milliseconds, ensuring that the steam turbine can quickly adjust the steam intake and maintain the stability of the speed and power when the load changes. This rapid response is crucial for the dynamic regulation of the steam turbine, especially when the grid frequency fluctuates or the load changes suddenly, the response speed of the solenoid valve directly affects the stable operation of the steam turbine.

In addition to rapid response, the solenoid valve FRD.WJA3.002 can also achieve high-precision oil pressure control. It can adjust the opening of the oil circuit according to the slight changes in the control signal to ensure that the change in oil pressure is consistent with the expectation. This precision control is crucial for the smooth operation of the steam turbine, especially under low load or high-precision control requirements, the precision of the solenoid valve directly affects the operating efficiency and safety of the steam turbine.

In the emergency shutdown or fault protection system of the steam turbine, the solenoid valve FRD.WJA3.002 also plays an important role. When the control system detects an abnormal situation, it will immediately send a shutdown signal, and the solenoid valve will respond quickly, cutting off the oil circuit to the actuator and preventing the steam inlet valve from continuing to open, ensuring that the steam turbine can be safely shut down and avoiding accidents.

In order to ensure that the solenoid valve FRD.WJA3.002 can continue to play a role in the control loop, daily maintenance and inspection are essential. This includes regular cleaning of the solenoid valve to prevent impurities from clogging the oil circuit; checking the resistance and insulation of the solenoid coil to ensure the electrical performance of the solenoid valve; and testing the response time and accuracy of the solenoid valve to ensure that its performance in the control loop meets the requirements.
Yoyik offers various types of valves and pumps and its spare parts for power plants:
steam condensate pump YCZ50-250C/L=600mm
3 screw pump HSNH210-36N
12 volt hydraulic valve J-220VAC-DN10-AOF/26D/2N
oil seals 23 x 28 x 2.5 mm Thk
Globe valve WJ65F-16
Repair Kit NXQ A-10/31.5-L-EH
Soot Blower Vent Valve N1/47424B
Bellows valves WJ50F-16P DN50
Mechanical seal of seal oil recirculation pump HSND280-46
6v solenoid valve Z2804076
pressure relief valve YSF16-55*130KKJ
balance drum HPT-300-340-6S/PCS1002002380010-01/603.01/1-204247631
china hydraulic pump 70LY-34*2-1
electric screw pump HSNH210-54
vacuum pump system WS-30
check globe valve WJ65F-1.6P
Manual shut-off valve WJ25F16P
24 volt solenoid valve J-220VAC-DN6-D/20B/2A
Shaft P18584E-00
Yx type seal ring d280