Description
Woodward TG13
Technical Specifications
- Type: Self-contained mechanical-hydraulic governor.
- Lubrication: Self-contained independent oil source.
- Control Mode: Droop speed control.
Functional Features
- Independent Operation: Does not require an external oil supply or complex external control linkages.
- Reliable Speed Regulation: Maintains stable turbine speed under varying load conditions with inherent droop characteristics.
- Simplicity: Purely mechanical-hydraulic design ensures high reliability in harsh environments without electronic dependencies.
Application Scenarios
Ideal for small steam turbines driving pumps, compressors, or auxiliary generators where precise synchronous grid paralleling is not required.
Performance Parameters
- Maximum Output Shaft Rotation: 40 degrees.
- Recommended Stroke: 2/3 of full stroke from no-load to full-load.
Material Composition
Precision-machined cast iron and steel hydraulic components, corrosion-resistant internal valves, and high-quality seals for long-term oil retention.
Structural Characteristics
- Compact Design: Integrates the speed sensing mechanism, hydraulic amplifier, and oil reservoir into a single housing.
- Output Shaft: Direct mechanical linkage to the turbine’s steam valve.
Working Principle
Flyweights sense the turbine’s rotational speed. As speed changes, the flyweights move a pilot valve that directs pressurized oil from the internal reservoir to a servo piston. The piston adjusts the steam valve position to restore the desired speed, operating with a natural droop characteristic.
Installation Requirements
Must be mounted securely to the turbine with proper alignment to the steam valve linkage. Requires adequate clearance for maintenance and oil level checking.
Precautions for Use
Regularly check and maintain the internal oil level and quality. Ensure the mechanical linkage is free of binding and properly lubricated.
