摘要:
The present invention relates to a burner for a combustion chamber of a gas turbine with a mixing and injection device (43), wherein the mixing and injection device (43) is comprising a limiting wall (44) that defines a gas-flow channel (440) and at least two streamlined bodies (22), each extending in a first transverse direction (49) into the gas-flow channel (440). Each streamlined body (22) has two lateral surfaces that are arranged essentially parallel to the main-flow direction (14), the lateral surfaces being joined to one another at their upstream side to form a leading edge of the body and joined at their downstream side to form a trailing edge of the body (22). Each streamlined body (22) has a cross-section perpendicular to the first transverse direction (49) that is shaped as a streamlined profile. At least one of said streamlined bodies (22) is provided with a mixing structure and with at least one fuel nozzle (15) located at its trailing edge for introducing at least one fuel essentially parallel to the main-flow direction (14) into the flow channel (440), wherein at least two of the streamlined bodies (22) have different lengths along the first transverse direction (49) such that they may be used for a can combustor.
摘要:
A jet engine is provided with an inlet 11 and a combustor 12 having a fuel injection port 30a. The combustor 12 has a wall part 16 that defines an air flow path FA. The wall part 16 has a ramp part 60, which has an inclined face 62, and a first wall face 17 extending to the front-side end of the inclined face 62. The fuel injection port 30a is positioned at the ramp part 60. The inclination angle θ relative to the first wall face 17 of the inclined face 62 is at least 13.5 degrees. The height by which the ramp part 60 protrudes from the first wall face 17 does not exceed one fifth of the height of the inlet of the combustor 12. Thus provided are a jet engine and a flying object in which the inclination angle of the inclined face of a ramp is made larger so as to promote the mixing of fuel and air and to allow for stable flame holding at the rear of the ramp.
摘要:
The disclosure relates to a burner such as for a secondary combustion chamber of a gas turbine with sequential combustion having a first and a second combustion chamber, with an injection device for introduction of at least one gaseous and/or liquid fuel into the burner. The injection device has at least one body which is arranged in the burner with at least one nozzle for introducing the at least one gaseous fuel into the burner, the at least one body being configured as a streamlined body which has a streamlined cross-sectional profile and which extends with a longitudinal direction perpendicularly or at an inclination to a main flow direction prevailing in the burner. At least one nozzle has its outlet orifice downstream of a trailing edge of the streamlined body.
摘要:
The injector device (1) comprises an elongated body (2) with a leading edge (3) and a trailing edge (4), gas nozzles (7) and oil nozzles (8), an oil supply duct (10) housed within the elongated body (2) and connected to the oil nozzles (8), a gas supply duct (11) housed within the elongated body (2) and connected to the gas nozzles (7). The oil supply duct (10) is connected to the gas supply duct (11) only between one or more oil nozzles (8) and one gas nozzles (7), and the gas supply duct (11) is connected to the elongated body (2) only via bridges (13).
摘要:
An aerospace component (102) includes a wall (122) with an integral longitudinal wall passage (120) formed therein, the integral longitudinal wall passage (120) including at least one entrance aperture (126) and at least one exit aperture (132), the exit aperture (132) transverse to the integral longitudinal wall passage (120). The aerospace component (102) may be additively manufactured.
摘要:
A gas turbine engine combustion chamber (15) comprises upstream and downstream ring structures (43, 54, 56) and a plurality of circumferentially arranged combustion chamber segments (58, 60). Each segment (58, 60) extends the full length of the combustion chamber (15) and each segment (58, 60) is secured to the upstream ring structure (43) and is mounted on the downstream ring structure (54, 56). The upstream end of each combustion chamber segment (58, 60) comprises a surface having a plurality of circumferentially spaced radially extending holes (118) and the upstream ring structure (43A, 43B) having a plurality of circumferentially spaced holes (116A, 116B) extending radially through a portion abutting the surface of the upstream end of each combustion chamber segment (58, 60). Each combustion chamber segment (58, 60) being removably secured to the upstream ring structure (43A, 43B) by a plurality of fasteners (120) locatable in the holes (118) in the combustion chamber segment (58, 60) and corresponding holes (116A, 116B) in the upstream ring structure (43A, 43B).
摘要:
A streamlined body (22) having two lateral surfaces that are arranged essentially parallel to a main-flow direction with a central plane therebetween, wherein the lateral surfaces are joined to one another at upstream sides of the lateral surfaces to form a leading edge of the body and are joined at downstream sides of the lateral surfaces to form a trailing edge (24) of the body, the streamlined body (22) extending perpendicularly to the main-flow direction and along a first transverse direction, and having a cross-section perpendicular to the first transverse direction that is shaped as a streamlined profile, and being provided with a mixing structure and with at least one fuel nozzle located at the trailing edge, wherein the mixing structure is provided in form of a plurality of lobes located at the trailing edge (24) of the body, wherein each lobe extends substantially perpendicular to said central plane in a second transverse direction or a third transverse directions, wherein the second and third transverse directions run oppositely to one another, wherein the lobe side walls comprise straight sections such that a lobing trailing edge (24) is provided which comprises straight sections.
摘要:
The present embodiment sufficiently ensures the ignition stability and the flame-holding property of an afterburner 25 while suppressing a reduction in the engine efficiency of an aircraft engine 1. A flame holder 45 is disposed directly downstream of an injection hole 41 of a fuel injector 39 in a liner 31. The flame holder 45 comprises: a ring-shaped annulus flame-holding member 49 which is provided on the inner circumferential surface of the liner 31 and is capable of propagating a flame in the circumferential direction; and a plurality of radial flame-holding members 51 which are radially disposed inwards of the annulus flame-holding member 49 and are capable of propagating the flame in the radial direction. A guide ring 53 is provided inwards of the radial flame-holding members 51, and a ring-shaped guide channel 57 that guides a fuel-containing mixed gas in the downstream direction is formed between the outer peripheral surface of the guide ring 53 and the inner peripheral surface of the annulus flame-holding member 49.