Cam-driven valve system for steam turbines
Patent
·
OSTI ID:6909578
This patent describes, in a steam turbine system including a source of motive steam and a turbine adapted to operate at less than a full load, the turbine including an improved cam-driven valve system for activating a varying number of steam control valves to permit transferring between a maximum arc-admission mode and a minimum arc-admission mode. It comprises: a steam chest for receiving the motive steam from the source, the steam chest including a plurality of valves connected to a corresponding turbine section and set for a minimum admission of motive steam into the turbine below 100 percent; a first cam lift means for actuating a portion of the valves and second cam lift means for actuating the remainder of the valves.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA
- Patent Number(s):
- A; US 4903490
- Application Number:
- PPN: US 7-257898A
- OSTI ID:
- 6909578
- Country of Publication:
- United States
- Language:
- English
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