RBV All-Electric Rotary Air Bleed Valve

To function efficiently at reduced power, Dry Low Emission (DLE) turbines require modulating bleed air valves. These valves must be fast enough to keep pace with DLE turbine demands for accurate combustion air control.

PECC's RBV all-electric rotary bleed air valve controls high temperature air up to 850°F, and also helps maintain a precise fuel/air ratio within the turbine, enabling it to achieve smoother performance.  The RBV is available in three common nominal pipe sizes, 3”, 4”, and 6”, all offering exceptionally high flow capabilities while still providing excellent shut off characteristics. Each valve integrates a fail-safe spring and is designed to fail open or fail closed, depending upon desired action. The RBVs are fast, allowing for quick pressure control response.

The RBV actuation mechanism utilizes robust, compact planetary gearing to offer multiple output levels in a common package. Mounting provisions are provided. Reliability is a top priority for this product. Advanced modeling techniques and state-of-the-art CAE tools were employed, along with field-proven valves, to achieve the RBV's robust design and performance objectives.

In addition, the all-electric actuator's internal health-monitoring software provides fault and over-temperature information. Real-time motor current, voltage, temperature, and position tracking can be monitored using the standard, isolated RS485 interface or the optional Ethernet or CAN interfaces.