摘要:
The present invention relates to a swirler arrangement (10; 10a) of a burner (52), in particular of a gas turbine engine (14), comprising at least two wings (16, 18; 16a, 18a), wherein a thread-like flow channel (20) is arranged between the at least two wings (16, 18; 16a, 18a), wherein the flow channel (20) is allowing a flow medium (22) to travel along the flow channel (20) in a flow direction (24, 24') and wherein the flow medium (22) is set into a thread-like motion by the flow channel (20) when flowing through the flow channel (20) and wherein each wing (16, 18; 16a, 18a) of the at least two wings (16, 18; 16a, 18a) comprise an upstream part (26) and a downstream part (28; 28a). To increase the flashback resistance of the burner (52) it is proposed that the downstream part (28; 28a) comprises at least one opening (30; 30a) for injecting fuel (32) into the flow medium (22) while traveling the flow channel (20).
摘要:
The invention relates to a burner (1) for a gas turbine with a supply zone (2) for supplying fuel and air and a subsequent mixing zone (3) for premixing fuel and air, the mixing zone (3) having an upstream end (4) and a downstream end (5) and comprising a plurality of premix jet pipes (6) for mixing air and fuel, each with an inlet (7) and an outlet (8), arranged around a central burner axis (9) and extending between the upstream end (4) and the downstream end (5), wherein closer to the upstream end (4) the premix jet pipes (6) are straight and parallel to each other and wherein closer to the downstream end (5) the premix jet pipes (6) are bent away from the central burner axis (9) wherein a bending of the premix jet pipes (6) increases with the distance between premix jet pipe (6) and central burner axis (9), wherein a diameter (11) of the premix jet pipes (6) is between 0.5 mm and 10 mm.
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 burner with a burner head comprises a mixing tube (3) for premixing combustion air and fuel. The mixing tube (3) is provided with a pilot burner system in its downstream part. The pilot burner system comprises an annular mixing cavity (10) with an entrance for assist air and pilot fuel and with outlet nozzles (7). The mixing cavity (10) is provided with at least two swirler wings (18) being arranged in the vicinity of each outlet nozzle (7).
摘要:
The invention relates to a method for operating a power device (1), the power device (1) comprises a gas turbine (2) and an exhaust gas system (3) for treatment of exhaust gas, wherein the gas turbine (2) comprises a combustion chamber (5) and a turbine (6), the gas turbine (2) is at least configured for co-firing hydrogen and/or ammonia, wherein the hydrogen and/or the ammonia is supplied by an ammonia system (8), comprising the steps of: a) providing the ammonia in the ammonia system (8), b) heating the ammonia in the ammonia system (8) with heat from the power device (1) to decompose the ammonia completely or partly into nitrogen and hydrogen, c) injecting at least the hydrogen and/or the nitrogen, and/or the remaining ammonia into the combustion chamber (5) of the gas turbine (2), d) combusting at least the hydrogen and/or the nitrogen, and/or the remaining ammonia in the combustion chamber (5) of the gas turbine (2), e) treating the exhaust gas of the combustion chamber (5) with ammonia from the ammonia system (8) to remove at least nitrogen oxides from the exhaust gas of the combustion chamber (5).
摘要:
A premixed dual fuel burner includes a burner head, a burner interior elongated along a main axis and having an upstream side enclosed by a swirler and a downstream side enclosed by a premixing section, and an injection component. The burner head, the upstream side and the downstream side are serially arranged. The swirler includes an inlet section for introducing air and a main gas fuel into the burner interior. The injection component has a tapering structure positioned along the main axis. The tapering structure extends from the burner head into the burner interior. The injection component has a burner head side and an injection side and tapers from the burner head side to the injection side along the main axis. At the injection side a liquid fuel outlet is present for introducing a main liquid fuel into the burner interior. The injection side is disposed in the burner interior.
摘要:
The invention relates to an assembly (AS) comprising a gas turbine (GT) and a heat exchanger (HE) for heating up a gas turbine process fluid (GTPF) by thermal energy , said gas turbine (GT) comprising a compressor (CO), a combustor (CB) and a turbine (TB) downstream said combustor (CB), characterized by thermal energy from said solar receiver (SR). To improve efficiency and reduce power generation fluctuations it is proposed that said assembly (AS) comprises: - a first line (L1) to conduct said gas turbine process fluid (GTPF) downstream a compression by said compressor (CO) to said heat exchanger (HE), - a second line (L2) to conduct said gas turbine process fluid (GTPF) from said heat exchanger (HE) to said combustor (CB) to generate hot combustion gas (HCG) from said warmed up gas turbine process fluid (GTPF) burning fuel (F) in said combustor (CB).
摘要:
The invention relates to a burner (1) for a gas turbine, comprising a pilot combustor (5), a supply module providing pilot fuel (20) and pilot air (21) into a pilot combustion room (23) being enclosed by a pilot burner housing (22) comprising a tapered exit throat (24) discharging a concentration of radicals and heat generated in a pilot combustion zone (25) into a main combustion room (15) enclosed by a burner housing (4). Further said burner (1) comprises an equalizer (6), which is provided with a plurality of holes through which a main flow of air (7) enters a cavity (8), wherein said burner further comprises a fuel injector (9) downstream the equalizer (6) to supply a main flow of fuel (12) into the main flow of air (7), wherein a burner axis (3) is defined by the center of the pilot combustion zone (23) and the center of the main combustion zone (14), wherein said burner further comprises a swirler (13) downstream the injector (9) to give a designated flow distribution to the flow of fuel (12) and air (7) entering downstream said main combustion room (15). To mainly reduce space requirement the equalizer (6) is built in such a manner that the main air (7) flow enters the cavity (8) in a basically radial direction with regard to the burner axis (3), wherein a channel leads from the equalizer (6) to the swirler (13) arranged circumferentially around the pilot burner housing (22), said channel and said swirler being built in such a way that the main air flow (7) from said equalizer is directed in a basically axial and circumferential direction.
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.