Mechanical Governors for Steam Turbines

Woodward TG611 Governors are self-contained, mechanical-hydraulic, speed-droop governors for use on small steam turbines driving pumps, compressors, or generators, where isochronous operation is not required. These governors are directly coupled to the stem-turbine?s rotor or auxiliary shaft to sense and control turbine speed. Designed for API-611-based turbine applications, these governors include a special Overspeed Test Device, allowing controlled and safe turbine overspeed trip testing.

The Woodward UG-25+ governor is a microprocessor-controlled, mechanical-hydraulic amplified, governor for controlling diesel, gas, and dual fuel engines, and steam turbines. The UG-25+ offers enhanced control capabilities, such as start fuel and boost limiting schemes. The additional transient fuel limiting (jump-rate) improves the engine load acceptance and reduces transient emissions significantly. The UG-25+ concept offers a fast-acting and high-work-output governor, without the need for any auxiliary devices such as a start booster.