Method and system for determining gas turbine tip clearance

Details Method and system for determining gas turbine tip clearance Method and system for determining gas turbine tip clearance

2005-02-22

2009-06-02

Edgar, Richard (Department: 3745)

Rotary kinetic fluid motors or pumps

Method of operation

C415S118000

Reexamination Certificate

active

07540704

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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Kulite Water/Air Cooled IS Transducer. WCT-250, [online], [retrieved on Feb. 28, 2007] Retrived from Kulite website unsing Internet <URL:http://www.kulite.com/pdfs/pdf—Data—Sheets/WCT-250.pdf>.
Kulite Water/Air Cooled IS Transducer. WCT-312, [online], [retrieved on Feb. 28, 2007] Retrived from Kulite website unsing Internet <URL:http://www.kulite.com/pdfs/pdf—Data—Sheets/WCT-312.pdf>.
Ivey, Paul C. and Ferguson, Derek G. ASME Paper No. GT-2002-30046. pp. 235-242. An Air-Cooled Jacket Designed to Protect Unsteady Pressure Transducers at Elevated Temperatures in Gas Turbine Engines. Proceesings of ASME Turbo Expo 2002. Jun. 3-6, 2002. Amsterdam, The Netherlands.

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