US 12,435,878 B2
Gas turbine combustor with less combustable fuel and highly combustible fuel ratio control
Kenji Miyamoto, Kanagawa (JP); Sosuke Nakamura, Kanagawa (JP); Taku Egawa, Kanagawa (JP); and Tomo Kawakami, Kanagawa (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 18/269,115
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Dec. 28, 2021, PCT No. PCT/JP2021/048742
§ 371(c)(1), (2) Date Jun. 22, 2023,
PCT Pub. No. WO2022/149540, PCT Pub. Date Jul. 14, 2022.
Claims priority of application No. 2021-002117 (JP), filed on Jan. 8, 2021.
Prior Publication US 2024/0125476 A1, Apr. 18, 2024
Int. Cl. F23R 3/36 (2006.01); F02C 9/40 (2006.01); F23R 3/26 (2006.01)
CPC F23R 3/36 (2013.01) [F02C 9/40 (2013.01); F23R 3/26 (2013.01); F05D 2240/35 (2013.01); F05D 2270/303 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A gas turbine combustor, comprising:
a first fuel injector for injecting fuel supplied from a first confluent portion where a less combustible fuel and a highly combustible fuel having a higher combustion speed than the less combustible fuel meet;
a second fuel injector for injecting fuel supplied from a second confluent portion, different from the first confluent portion, where the less combustible fuel and the highly combustible fuel meet;
a combustion part for burning fuel injected from the first fuel injector and the second fuel injector;
a first less combustible fuel flow control valve for controlling amounts of less combustible fuel supplied to the first fuel injector;
a second less combustible fuel flow control valve, different from the first less combustible fuel flow control valve, for controlling amounts of the less combustible fuel supplied to the second fuel injector;
a first highly combustible fuel flow control valve for controlling amounts of the highly combustible fuel supplied to the first fuel injector;
a second highly combustible fuel flow control valve, different from the first highly combustible fuel flow control valve, for controlling amounts of the highly combustible fuel supplied to the second fuel injector; and
a controller configured to control the first less combustible fuel flow control valve, the second less combustible fuel flow control valve, the first highly combustible fuel flow control valve and the second highly combustible fuel flow control valve such that a relative ratio of a first ratio of the highly combustible fuel to a total combined fuel injected by the first fuel injector and a second ratio of the highly combustible fuel to a total combined fuel injected by the second fuel injector changes according to an operating condition of a gas turbine,
wherein the second confluent portion is configured to supply a mixed fuel of the less combustible fuel and the highly combustible fuel when the mixed fuel of the less combustible fuel and the highly combustible fuel is being supplied from the first confluent portion.