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| The electro-hydraulic servo valve 078N209E for steam turbines is a special type of servo valve designed for steam turbine systems. Compared with conventional servo valves, it has the characteristics of high temperature and high pressure resistance, and can work stably and reliably. More precise control of flow and pressure can ensure stable operation of the steam turbine system under various load changes and operating conditions, and can quickly respond to changes in system demand. In the steam turbine DEH system, the control circuit receives parameter information feedback from sensors, compares and calculates it with the preset target value, and generates corresponding control signals. By adjusting the working state and output of the servo valve, precise control of the hydraulic system is achieved. This process is usually a closed-loop feedback control system, where the control circuit continuously receives, processes, and adjusts control signals to maintain the hydraulic system in the desired operating state. |
| Technical Specification of Servo Valve for Reference | |
| Valve Type | Electro hydraulic servo valve |
| Connection | Aviation plug |
| Material | Stainless steel |
| Maximum Supply Pressure | 210bar |
| Minimum Supply Pressure | 14bar |
| Proof Pressure | 150% At Supply Port |
| Burst Pressure Return Port Open | 250% |
| Maximum Operating Temperature | 135°C |
| Hysteresis Around Null | ≤3% |
| Symmetry Error | <10% |
| Linearity Error | <10% |
| Threshold | ≤0.5% |
| Condition | Brand-New |
| After-service | Cleaning and testing |
| Applications of Servo Valve: 1. Adjust the power output of the turbine by controlling the flow and pressure in the hydraulic system 2. Control the working status of hydraulic motors or cylinders to achieve stable operation and optimized performance. 3. Maintain pressure balance between various hydraulic components within the turbine system. 4. Implement the protection function of the steam turbine system, and be able to respond in a timely manner and take corresponding measures in case of high or low pressure, abnormal flow, etc. in the system to avoid system damage or failure. |
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