Problems with the turbine control valves
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A steam turbine can be equipped with 5 control valves; typically, the 5th valve (the fifth one in order of operation, and located in the middle) is an internal bypass control valve, while the first 4 valves are nozzle control valves. What is the concept of an internal bypass control valve?
:time: Seeking answers, studying*ing..............:victory:
I have the same question. Does the internal bypass mean that this valve allows steam to enter the drum stage directly, without going through the nozzle? I’m not clear about the rest either
Do condensing steam turbines also have internal bypass control valves? Are they used by extraction steam turbines to regulate the extraction pressure?