Rotary kinetic fluid motors or pumps – Method of operation
Patent
1980-06-26
1982-07-06
Casaregola, Louis J.
Rotary kinetic fluid motors or pumps
Method of operation
415 47, 415175, 415178, F01D 2508
Patent
active
043380611
ABSTRACT:
Clearance control means is provided for a gas turbine engine. In one embodiment relating to compressor blade clearance, means is provided for developing a first signal representative of the actual compressor casing temperature, a second signal representative of compressor inlet gas temperature, and a third signal representative of compressor speed. Schedule means is provided for receiving the gas temperature and compressor speed signals and developing a schedule output signal. The schedule output signal is representative of a reference casing temperature at which a predetermined compressor blade stabilized clearance is provided. Means is provided for comparing the actual compressor casing temperature signal and the reference casing temperature signal and developing a clearance control signal representative of the difference therebetween. The clearance control signal is coupled to a control valve which controls a flow of air to the compressor casing to control the clearance between the compressor blades and the compressor casing. Means is provided for modification of the clearance control signal to accommodate transient characteristics. Other embodiments are disclosed.
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Beitler Richard S.
Bennett George W.
Sellers Frederick J.
Casaregola Louis J.
Lawrence Derek P.
Musial Norman T.
Silverman Carl L.
The United States of America as represented by the Administrator
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