摘要:
The invention relates to a gas injector for injecting fuel into a burner for a gas turbine engine. It is an object of the present invention to improve the mixing efficiency of air and fuel to further enhance the efficiency of a burner. According to the invention the gas injector comprises a burner (1) provided with a quarl (4a, 4b, 4c), which is circumferenting a combustion room, at least a first channel (10, 11) emerging into the combustion room for providing the combustion room with air (12) mixed with fuel (14); a swirler (3) for mixing the air (12) and the fuel (14) located at the inlet of said channel (10, 11); at least one tube (15) for the provision of fuel (14) at an inlet (13) of at least one channel (10, 11), wherein said tube (15) is provided with a plurality of diffuser holes (15A) distributed along the tube (15) acting as gas injectors for effectively distributing fuel (14) in a flow of air passing through said channel (10, 11).
摘要:
A gas turbine is provided comprising at least one rotor assembly (10); and at least one compressor casing (11); wherein the compressor casing comprises at least one inner compressor casing chamber (1112) for arranging the rotor assembly and at least one outer compressor casing chamber (1113) for tempering the compressor casing; the inner compressor casing chamber (1112) and the outer compressor casing chamber (1113) are separated from each other by a separating casing wall (1101); the outer compressor casing chamber (1113) comprises at least one boundary casing wall (110); the boundary casing wall (110) and the separating casing wall (1101) are oppositely spaced from each other such that the outer compressor casing chamber is formed; and the boundary casing wall (110) comprises at least one inlet opening (1100) for leading in an inlet tempering gas flow (1115) with tempering gas into the outer compressor casing chamber (1113) such that a tangential material temperature variation of the compressor casing (11) is reduced in comparison to a non tempered compressor casing. Preferably more inlet openings (1100) are distributed alongside an internal surface of the boundary casing wall (110).
摘要:
The invention relates to a swirler for premixing a flow of fuel (14) and a flow of air (12) provided to a burner (1) for a gas turbine engine, which burner (1) is provided with a swirler (3) for mixing the air (12) and the fuel (14) and wherein the swirler (3) is provided with swirler wings (3a), wherein a channel formed between two adjacent swirler wings (3a) defines a passage. It is one object of the invention to provide stability to a lean premixed combustion. This is achieved by a swirler of the above mentioned type having one fuel tube (15) for gaseous fuel positioned in parallel on each side of a mixing rod (15b) in said passage, wherein said fuel tubes (15) are provided with a plurality of diffuser holes (15a) distributed along the tube (15) acting as gas injectors for efficiently distributing fuel (14) in a flow of air passing through said swirler (3) passage.