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Apparatus and method for mixing fuel in a gas turbine nozzle

United States Patent

8,800,289
August 12, 2014
View the Complete Patent at the US Patent & Trademark Office
A nozzle includes a fuel plenum and an air plenum downstream of the fuel plenum. A primary fuel channel includes an inlet in fluid communication with the fuel plenum and a primary air port in fluid communication with the air plenum. Secondary fuel channels radially outward of the primary fuel channel include a secondary fuel port in fluid communication with the fuel plenum. A shroud circumferentially surrounds the secondary fuel channels. A method for mixing fuel and air in a nozzle prior to combustion includes flowing fuel to a fuel plenum and flowing air to an air plenum downstream of the fuel plenum. The method further includes injecting fuel from the fuel plenum through a primary fuel passage, injecting fuel from the fuel plenum through secondary fuel passages, and injecting air from the air plenum through the primary fuel passage.
Johnson; Thomas Edward (Greer, SC), Ziminsky; Willy Steve (Greenville, SC), Berry; Jonathan Dwight (Simpsonville, SC)
General Electric Company (Schenectady, NY)
12/ 877,385
20120055167
September 8, 2010
FEDERAL RESEARCH STATEMENT 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 the invention.