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Flame tolerant secondary fuel nozzle

United States Patent

February 24, 2015
View the Complete Patent at the US Patent & Trademark Office
A combustor for a gas turbine engine includes a plurality of primary nozzles configured to diffuse or premix fuel into an air flow through the combustor; and a secondary nozzle configured to premix fuel with the air flow. Each premixing nozzle includes a center body, at least one vane, a burner tube provided around the center body, at least two cooling passages, a fuel cooling passage to cool surfaces of the center body and the at least one vane, and an air cooling passage to cool a wall of the burner tube. The cooling passages prevent the walls of the center body, the vane(s), and the burner tube from overheating during flame holding events.
Khan; Abdul Rafey (Greenville, SC), Ziminsky; Willy Steve (Greenville, SC), Wu; Chunyang (Greenville, SC), Zuo; Baifang (Greenville, SC), Stevenson; Christian Xavier (Greenville, SC)
General Electric Company (Schenectady, NY)
12/ 835,227
July 13, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Contract No. DE-FC26-05NT42643 awarded by the Department of Energy. The Government has certain rights in this invention.