The 3YV mechanical shutdown electromagnet belongs to live operation and is suitable for the steam turbine ETS system. The electrical trip itself is redundant. Once the electrical shutdown signal is received, the ETS energizes the electromagnetic trip electromagnet.

The Braking Magnet Electromagnetic Coil 3YV provides a means to trip the unit in an emergency state. The shutdown electromagnet releases the support hook of the emergency trip device through the lever of the emergency trip device connecting rod. The emergency trip device connecting rod causes the emergency trip valve to operate, cutting off the inlet of high-pressure security oil and opening the outlet of high-pressure security oil to drain the high-pressure security oil. Quickly close all main steam and regulating steam valves, and block the steam inlet of the unit. The main solenoid valve in the high-voltage trip component loses power, directly discharging the high-pressure safety oil and quickly closing each valve.

Various shutdown electrical signals are sent to the mechanical shutdown electromagnet 3YV to drive the emergency trip device to connect and release the support hook of the emergency trip device. Causing the emergency trip valve of the high-pressure trip component to act, releasing the high-pressure safety oil, quickly closing each steam inlet valve, and blocking the steam inlet of the unit. Even if the emergency trip valve in the high-pressure trip component refuses to operate, the system can still trip all control valves and main steam valves to ensure the safety of the unit.

From Dongfang Yoyik, you can also find other solenoid valves which are frequently used on steam turbines.

solenoid valve HY-FXF10.08V
OPC solenoid valve 4WE10D-L3X/CW220-50NZ5L/V
OPC solenoid valve 4WE1031/CG220N9K4
AST solenoid valve 6YV
Ast solenoid valve SV4-10V-0-0-220AC
AST solenoid valve SV1-10V-C-0-00
AST solenoid valve ZD.02.009
overspeed protection solenoid valve R900944371
AST solenoid valve coil Z6206052
active solenoid valve OG4V3-2A 22VDC
solenoid valve 300AA00086A
solenoid valve R900941174
AST solenoid valve GS021600V
AST solenoid valve ZD.02.004
AST solenoid valve 8YV
AST solenoid valve SV13-12V-0-0-00
Ast solenoid valve SV4-10V-O-220AG
OPC solenoid valve SV13-12V-O-0-00
Switching Mode Power Supply MES-150-24
Solenoid valve MCSCJ230AG000010
AST/OPC solenoid valve coil 300AA00086A