US 12,111,057 B2
Gas turbine fuel mixer comprising a plurality of mini tubes for generating a fuel-air mixture
Pradeep Naik, Bengaluru (IN); Manampathy G. Giridharan, Mason, OH (US); Vishal Sanjay Kediya, Bengaluru (IN); and Gregory A. Boardman, Owens Cross Roads, AL (US)
Assigned to GENERAL ELECTRIC COMPANY, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on May 19, 2023, as Appl. No. 18/320,682.
Application 18/320,682 is a division of application No. 17/199,257, filed on Mar. 11, 2021, granted, now 11,692,709.
Prior Publication US 2023/0288069 A1, Sep. 14, 2023
Int. Cl. F23R 3/28 (2006.01); F02C 3/20 (2006.01); F23R 3/12 (2006.01); F23R 3/34 (2006.01); F23R 3/36 (2006.01); F02C 7/22 (2006.01); F02C 7/26 (2006.01)
CPC F23R 3/286 (2013.01) [F23R 3/12 (2013.01); F23R 3/343 (2013.01); F02C 3/20 (2013.01); F02C 7/222 (2013.01); F02C 7/26 (2013.01); F23R 3/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for operating a gas turbine engine, the method comprising:
injecting a natural gas fuel into the gas turbine engine to initiate operation of the gas turbine engine;
after initiating operation, injecting a percentage by volume of hydrogen fuel with the natural gas fuel for providing a fuel flow to the gas turbine engine;
ramping up the percentage by volume of hydrogen fuel to a range of 70% to 100% of the fuel flow; and
mixing the fuel flow with an air flow to laterally and tangentially spread the fuel flow and to create a fuel-air flow.