Steam chest crossties for improved turbine operations
Patent
·
OSTI ID:5491164
A steam turbine is described comprising: a casing including inlet means for receiving a flow of steam and means for exhausting the flow of steam; stator means mounted within the casing, the stator means including a stationary set of blades for directing the flow of steam; rotor means including a shaft having a rotatable set of blades mounted thereon adjacent to the stationary set of blades for receiving the flow of steam directed by the stator means and for transmitting work performed thereby to a load through the shaft; and steam chest means for regulating the flow of steam through the inlet means, the steam chest means comprising valves each of which are connected to a respective nozzle chamber via turbine inlet piping and are set for a minimum admission of the flow of steam to the inlet means below 100%, bar lift means for actuating at least one pair of the valves, high pressure means for actuating remaining ones of the valves, and means for crosslying the flow of steam through selected pairs of the nozzle chambers whereby the turbine is adapted to be transferred between a full-arc admission mode and a partial-arc admission mode without excessive thermal stress.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA
- Patent Number(s):
- US 4847039
- OSTI ID:
- 5491164
- Country of Publication:
- United States
- Language:
- English
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