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Turbine nozzle stage having thermocouple guide tube

United States Patent

August 13, 2002
View the Complete Patent at the US Patent & Trademark Office
A guide tube is fixed adjacent opposite ends in outer and inner covers of a nozzle stage segment. The guide tube is serpentine in shape between the outer and inner covers and extends through a nozzle vane. An insert is disposed in the nozzle vane and has apertures to accommodate serpentine portions of the guide tube. Cooling steam is also supplied through chambers of the insert on opposite sides of a central insert chamber containing the guide tube. The opposite ends of the guide tube are fixed to sleeves, in turn fixed to the outer and inner covers.
Schotsch; Margaret Jones (Greer, SC), Kirkpatrick; Francis Lawrence (late of Galway, NY), Lapine; Eric Michael (Northwood, NH)
General Electric Company (Schenectady, NY)
09/ 409,638
October 1, 1999
This invention was made with Government support under Contract No. DE-FC21-95MC31176 awarded by the Department of Energy. The Government has certain rights in this invention.