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Product Overview
The Woodward 8516-050 (TG-13F) is a mechanical-hydraulic turbine governor developed for accurate speed control of small and medium-capacity steam turbines. The governor regulates turbine speed through centrifugal sensing combined with hydraulic actuation, enabling stable operation under changing load conditions.
Designed for direct mechanical linkage to turbine steam valves or throttle valves, the 8516-050 (TG-13F) governor provides reliable control performance in rotating equipment such as pumps, compressors, and constant-speed power generators. Its robust construction and mechanical control architecture make it suitable for industrial installations requiring dependable long-term operation.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 8516-050 (TG-13F) |
| Manufacturer | Woodward |
| Governor Type | Mechanical-Hydraulic Turbine Governor |
| Speed Detection Method | Centrifugal flyweight sensing |
| Control Mechanism | Hydraulic servo actuation |
| Output Shaft Direction | Clockwise (CW) rotation |
| Maximum Output Torque | Up to 16 N·m |
| Typical Applications | Steam turbine speed control |
| Mechanical Linkage | Direct connection to throttle or control valves |
| Installation Orientation | Horizontal mounting typical |
Operating Principle
The 8516-050 (TG-13F) governor operates using a centrifugal flyweight mechanism that monitors turbine rotational speed. As the turbine speed changes, the flyweights adjust the hydraulic control system, which in turn positions the output shaft connected to the steam valve. This closed mechanical-hydraulic loop maintains a stable turbine speed even when load demand fluctuates.
Typical Application Environments
This governor is commonly installed in industrial turbine systems where constant rotational speed is critical.
Typical equipment includes:
- Steam turbine driven pumps
- Industrial compressors
- Turbine-generator sets operating at constant speed
- Mechanical drive turbines in process plants
- Auxiliary power turbines in refineries or power plants
The compact TG-series design allows integration into turbine control assemblies with limited space.
Installation and Maintenance Notes
Proper installation is essential to ensure accurate control performance. The governor should be installed in accordance with Woodward TG-series service manuals and aligned carefully with the turbine control linkage.
Routine maintenance generally includes:
- Periodic inspection of hydraulic components
- Checking linkage calibration and governor response
- Monitoring lubrication condition
- Verifying output shaft movement and torque response
Unauthorized modifications or improper calibration may affect turbine stability and should be avoided.
Frequently Asked Questions
What turbine sizes are compatible with the TG-13F governor?
The TG-13F configuration is typically used with small to medium steam turbines requiring moderate actuator torque and mechanical valve control.
Does the governor require external electrical power?
No. The TG-series governors operate using purely mechanical speed sensing and hydraulic actuation, eliminating the need for electrical control power.
Can the governor directly drive a steam valve?
Yes. The output shaft provides sufficient torque to drive turbine throttle or control valves through mechanical linkage, depending on valve design and load requirements.
