Rotary kinetic fluid motors or pumps – Method of operation
Reexamination Certificate
2010-05-07
2011-10-18
Look, Edward (Department: 3745)
Rotary kinetic fluid motors or pumps
Method of operation
C415S017000, C415S047000
Reexamination Certificate
active
08038382
ABSTRACT:
Systems and methods for controlling the clearance in a gas turbine are provided. A temperature of a shaft of the gas turbine may be determined, and a desired temperature of an inner turbine shell of the turbine may be determined based upon the temperature of the shaft. The desired temperature of the inner turbine shell may be associated with a turbine clearance at which the gas turbine may be ignited. The temperature of the inner turbine shell may be altered by controlling the temperature of a gas that is circulated within the inner turbine shell, and a determination may be made that the temperature of the inner turbine shell exceeds the desired temperature. The gas turbine may be ignited subsequent to the determination that the temperature of the inner turbine shell exceeds the desired temperature.
REFERENCES:
patent: 3966354 (1976-06-01), Patterson
patent: 4117669 (1978-10-01), Heller
patent: 4257222 (1981-03-01), Schwarz
patent: 4571935 (1986-02-01), Rice
patent: 6422807 (2002-07-01), Leach et al.
patent: 6691019 (2004-02-01), Seeley et al.
patent: 7165937 (2007-01-01), Dong et al.
Nigmatulin Tagir
Thatcher Jonathan Carl
Trout Jesse Edwin
Walker Roger Clayton
General Electric Company
Look Edward
Sutherland & Asbill & Brennan LLP
Younger Sean J
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