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The AST solenoid valve ZD.02.004 is a safety protection device used in the steam turbine system, mainly used to block the flow of high-pressure steam or gas. The AST solenoid valve group is installed on the right side of the front bearing box of the steam turbine, and is assembled into an integrated block with the OPC solenoid valve. After the AST solenoid valve is activated, all 12 steam turbine valves, including the high-pressure main steam valve, high-pressure regulating valve, reheat main steam valve, and reheat regulating valve, are closed to achieve emergency shutdown of the turbine.
Working principle of solenoid valve ZD.02.004:
This valve controls the opening and closing of the valve through the action of electromagnetic force. When the AST solenoid valve is energized, the current inside the solenoid coil generates a magnetic field, which attracts the valve core and opens the valve; When the current is disconnected, the electromagnetic force disappears, the valve core is subjected to the action of the spring, and the valve closes.
The tripping operation of AST solenoid valve ZD.02.004 is usually achieved through linkage with the monitoring and control system. The monitoring system monitors key parameters such as pressure, flow rate, etc. When the parameters exceed the predetermined safety range, the control system will trigger a trip operation, close the AST solenoid valve, and thus interrupt the flow of high-pressure steam, protecting system safety.
| Technical Specification of AST solenoid valve ZD.02.004 for Reference | |
| PRODUCT | SOLENOID COIL |
| SERIES | SIZE 10, 12, 16, 20 |
| VOLTAGE RATING | 230 VOLT |
| VOLTAGE TYPE / PROTECTION | AC / WITH FULL BRIDGE RECTIFIRE |
| CONNECTOR TYPE | DIN 43650-A |
| LEAD LENGTH | NONE |
| SPECIAL FEATURE | NONE |
Yoyik offers different types of Hydraulic solenoid valves for industrial users:
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OPC SOLENOID VALVES G130519
AST SOLENOID VALVES G1211177
Coil Vickers 300AA00126A
Solenoid valve body SV13-12V-O-0-00, HQ1615Z
Solenoid valve Z2804076
Solenoid valve Z2805013
гидравлический клапан PD10-40-0-N-170
OPC solenoid valve 5AYV
OPC solenoid valve 5BYV
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