HRSG Bypass Stack System
The gas turbine bypass system diverts flue gas from the heat recovery steam generator (HRSG) in combined cycle mode to a bypass stack with a muffler assembly for operation in simple cycle mode. The HRSG can then be serviced as the diverter completely isolates it from the gas turbine.
Bypass systems for the harshest environments
We can create reliable, robust and efficient designs to meet any system and compliance requirements because we consider the following key areas:
Thermally compensated steering vanes and vane supports
Robust steering gear toggle drive system
Baffle support system and sound dampening baffles
Customizable steering damper options
We provide comprehensive gas turbine services, starting with evaluating your needs to design the most energy and cost-effective bypass system to meet your safety specifications.
Our shunt damper options include:
Fully activated steering dampers:
Allow gas turbine operation during steam turbine trip
Controlled ramp-up of steam cycle during combined cycle start-up
Fast switching from combined loops to simple loops
Tee box with blind plate:
One-time or infrequent conversion to a combined loop
Tee box with retrofit capability:
Pre-engineered for possible future conversion to a shunt damper when converting to a combined cycle
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