Patent ID: 6431824
Filing Date: 2002-08-13
Classification: F01D,F02C,F05D

Abstract:
In a turbine having stages including a fixed nozzle stage segment having inner and outer bands, a plurality of nozzle vanes extending between said inner and outer bands, and inner and outer covers overlying said inner and outer bands, respectively, apparatus for guiding a thermocouple through said fixed stage, comprising:a tube extending through said outer cover, said outer band, a nozzle vane of said fixed nozzle stage, said inner band and said inner cover; a thermocouple wire within said tube; said tube extending non-linearly through said nozzle vane and fixed at opposite ends to said outer cover and said inner cover, respectively, said tube being responsive to temperature variations to expand and contract within said nozzle vane while remaining fixed at opposite ends thereof to said outer and inner covers; and the nozzle vane including a cavity between said inner and outer bands, an insert disposed in said cavity for receiving and flowing a thermal cooling medium, said insert having at least one aperture therethrough for receiving a portion of said tube.