Woodward Over Speed Protection for Steam Turbines

TG611 Governor with Overspeed Test Device

TG611 Governors are self-contained, mechanical-hydraulic, speed-droop governors for use on small steam turbines driving pumps, compressors, or generators, where isochronous (constant speed) operation is not required. These governors are directly coupled to the steam-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.

ProTech® 203 Overspeed Protection System

The Woodward ProTech 203 Overspeed Protection System monitors three individual magnetic pickups (MPUs) to provide overspeed protection for steam turbines, gas turbines, or other prime movers, and can operate above 10 000 rpm, where mechanical overspeed devices may become unreliable.

ProTech®-GII Overspeed Protection Device

The Woodward ProTech®-GII is an overspeed safety device designed to safely shut down steam, gas, and hydro turbines of all sizes upon sensing an overspeed or overacceleration event. This device accurately monitors turbine rotor speed and acceleration via active or passive MPUs (magnetic pickups) and issues a shutdown command to the turbine™s trip valve(s) or corresponding trip system.

ProTech®TPS Total Protection System

The Woodward ProTechTPS safety system is designed to be applied as a safety system for any size steam, gas, or hydro turbine, or plant process equipment. This safety PLC's fast (10 millisecond) response time, 0.5 to 32 000 rpm speed range, and integrated overspeed and acceleration detection/protection functionality, make it ideal for application on critical high-speed rotating motors, compressor, turbines or engines.

ProTech®-SX Safety System with Integrated Overspeed Protection

The Woodward ProTech-SX is a safety PLC (programmable logic controller) with integrated overspeed protection designed to safely shut down any plant process equipment, engine, or steam, gas, or hydro turbine upon sensing a safety event. This stand-alone safety system accepts two speed inputs and seven discrete/analog inputs, uses programmed logic to determine when a safety event has occurred, then issues system shutdown commands and alarms. The Woodward uses five fast-acting, configurable relay outputs and a speed meter output to interface with/command the specific system or device being protected.

Contact GCS for product specifications and technical manuals