Method and system for determining gas turbine tip clearance
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United States of America Patent
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Dec 4, 2012
Grant Date -
Aug 4, 2011
app pub date -
Apr 12, 2011
filing date -
Jun 23, 2004
priority date (Note) -
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Abstract
A system for sensing at least one physical characteristic associated with an engine including a turbine having a plurality of blades turning inside a casing, the system including: a pressure sensor coupled substantially adjacent to the casing and including at least one output; a port in the turbine casing for communicating a pressure indicative of a clearance between the blades and casing to the pressure sensor; a cooling cavity substantially surrounding the pressure sensor; and, an inlet for receiving fluid from the engine and feeding the fluid to the cooling cavity to cool the pressure sensor; wherein, the pressure sensor output is indicative of the clearance between the blades and casing.
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