Clearance control for a turbine
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United States of America Patent
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Jan 27, 2015
Grant Date -
Jan 24, 2013
app pub date -
Jul 18, 2011
filing date -
Jul 18, 2011
priority date (Note) -
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Abstract
A system for operating a turbine includes a rotating component and a non-rotating component separated from the rotating component by a clearance. A first actuator is connected to the non-rotating component, and the first actuator comprises a shape-memory alloy. A method for operating a turbine includes sensing a parameter reflective of a clearance between a non-rotating component and a rotating component and generating a parameter signal reflective of the clearance. The method further includes generating a control signal to at least one actuator based on the parameter signal and moving at least a portion of the non-rotating component relative to the rotating component to change the clearance.
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