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Premixed direct injection disk

United States Patent

April 23, 2013
View the Complete Patent at the US Patent & Trademark Office
A fuel/air mixing disk for use in a fuel/air mixing combustor assembly is provided. The disk includes a first face, a second face, and at least one fuel plenum disposed therebetween. A plurality of fuel/air mixing tubes extend through the pre-mixing disk, each mixing tube including an outer tube wall extending axially along a tube axis and in fluid communication with the at least one fuel plenum. At least a portion of the plurality of fuel/air mixing tubes further includes at least one fuel injection hole have a fuel injection hole diameter extending through said outer tube wall, the fuel injection hole having an injection angle relative to the tube axis. The invention provides good fuel air mixing with low combustion generated NOx and low flow pressure loss translating to a high gas turbine efficiency, that is durable, and resistant to flame holding and flash back.
York; William David (Greer, SC), Ziminsky; Willy Steve (Simpsonville, SC), Johnson; Thomas Edward (Greer, SC), Lacy; Benjamin (Greer, SC), Zuo; Baifang (Simpsonville, SC), Uhm; Jong Ho (Simpsonville, SC)
General Electric Company (Schenectady, NY)
12/ 394,544
February 27, 2009
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.