Description
Woodward TG-13
Technical Specifications
- Control Type: Droop speed control.
- Power Source: Internal mechanical/hydraulic (self-contained).
- Target Equipment: Small steam turbines.
Functional Features
- Inherent Stability: Natural droop characteristic prevents hunting and ensures stable load sharing in multi-turbine setups.
- Zero External Power: Operates entirely on the mechanical energy of the turbine shaft and internal hydraulic pressure.
- Fail-Safe Design: Mechanical nature ensures continued basic operation even during total electrical plant blackouts.
Application Scenarios
Perfect for mechanical drive applications, boiler feed pumps, and small standalone steam generators.
Performance Parameters
- Output Shaft Travel: Up to 40° maximum rotation.
- Effective Control Range: Utilizes the central 2/3 of the stroke for optimal response.
Material Composition
Manufactured from high-grade castings and machined steel parts, designed to withstand high ambient temperatures near steam turbines.
Structural Characteristics
- Monoblock Housing: Contains all hydraulic and mechanical components in a single, leak-resistant casing.
- Adjustment Points: External mechanical adjustments for speed setting and droop calibration.
Working Principle
Turbine rotation spins internal flyweights. Speed deviations cause the flyweights to move radially, shifting a pilot valve. This valve directs oil to a power piston, which physically moves the turbine’s steam valve to correct the speed error.
Installation Requirements
Mount in a location that minimizes exposure to excessive ambient heat and steam leaks. Provide safe access for manual speed adjustments and oil servicing.
Precautions for Use
Never operate without the proper oil level. Ensure the speed setting mechanism is securely locked after calibration to prevent unintended drift.
