Description
Woodward TG-17E
Technical Specifications
- Type: Electro-hydraulic actuator.
- Oil System: Self-contained independent oil source.
- Control Input: Electronic signals from Woodward digital controllers.
Functional Features
- Electronic Compatibility: Fully compatible with all Woodward electronic control systems for enhanced functionality.
- Isochronous & Droop Control: Capable of both droop and synchronous (isochronous) speed control modes.
- Load Sharing: Enables precise load sharing between multiple generators or turbines.
- Retrofit Ready: Designed to replace existing PG-type mechanical governors without altering the original drive linkage.
Application Scenarios
Used in modernizing small to medium steam turbines, upgrading from mechanical to digital control, and applications requiring precise grid synchronization and load sharing.
Performance Parameters
- Response Time: Significantly faster than purely mechanical governors due to electronic signal processing.
- Control Accuracy: High-precision electronic positioning of the steam valve.
Material Composition
Heavy-duty electro-hydraulic servo valves, precision machined hydraulic cylinders, and integrated electronic position sensors.
Structural Characteristics
- Self-Contained: Includes internal oil pump, reservoir, and filtration.
- Electrical Interface: Connectors for speed signals, actuator position feedback, and control power.
Working Principle
Receives an electronic speed or load command from a digital controller. An internal electro-hydraulic servo valve precisely meters oil from the self-contained reservoir to a hydraulic piston, moving the turbine steam valve to the exact commanded position.
Installation Requirements
Requires electrical power and signal wiring from the host digital controller. Must be properly grounded and linked to the existing turbine valve mechanism.
Precautions for Use
Ensure the digital controller is properly configured for the TG-17E’s specific calibration. Regularly monitor the self-contained oil level and filtration condition.
