摘要:
A combustor (56) for a turbine engine (20) includes a first liner (60) defined about an axis (A) with a first row (110) of first combustion air holes (114, 116, 118), one of the fist combustion air holes (114) is defined along each of a multiple of fuel injector zero pitch lines (L1, L2). A second liner (62) defined about the axis (A) with a second row (112) of second combustion air holes (120, 122), each of the second combustion air holes (120, 122) circumferentially offset relative to each of the multiple of fuel injector zero pitch lines (L1, L2).
摘要:
A cooled turbine exhaust case assembly (14) includes a plenum (24) defined at least in part by a forward outer diameter flowpath ring (16) and a turbine case (12), a probe (26) positioned at a probe opening (28) formed in the forward outer diameter flowpath ring, and an inlet opening (40) in the turbine case (12) for introducing cooling air to the plenum (24).
摘要:
A combustor (20) for a gas turbine engine includes a forward bulkhead (22), an inner radial combustor wall (26) and an outer radial combustor wall (28). The forward bulkhead has a plurality of circumferentially disposed injector apertures (34). The inner radial combustor wall is attached to and extends axially out from the forward bulkhead. The outer radial combustor wall is attached to and extends axially out from the forward bulkhead. At least one of the inner radial combustor wall and the outer radial combustor wall includes a plurality of quench aperture sets. Each quench aperture set includes a plurality of quench apertures. Adjacent quench apertures included within each quench aperture set are separated by an intraset distance. Adjacent quench aperture sets are separated by an interset distance. The intraset distance is different than the interset distance. The outer radial combustor wall is disposed radially outside the inner radial combustor wall, thereby defining an annular combustion region therebetween.
摘要:
A cooled turbine exhaust case assembly (14) includes a plenum (24) defined at least in part by a forward outer diameter flowpath ring (16) and a turbine case (12), a probe (26) positioned at a probe opening (28) formed in the forward outer diameter flowpath ring, and an inlet opening (40) in the turbine case (12) for introducing cooling air to the plenum (24).
摘要:
A method of reducing pressure fluctuations in the combustor of a gas turbine engine resulting from the combustion of fuel and air therein comprises combusting a fuel/air mixture in a combustor downstream of the exit plane of a fuel nozzle assembly such that such recirculation zones generated by the fuel nozzle assembly are in spaced relation to the exit plane at all operating conditions of the engine.
摘要:
A method of reducing the tendency of the combustion flame to attach to the centerbody of a tangential entry nozzle 10 is disclosed which comprises mixing fuel and air in a mixing zone 28 within a fuel nozzle assembly, thereby producing a first fuel/air mixture, which is isolated from the combustion products by maintaining sufficiently high axial velocities throughout the mixing zone. The nozzle has a longitudinal axis 26 and two cylindrical-arc scrolls 22,24 with the centerline of each offset from that of the other. Overlapping ends of these scrolls form an air inlet slot therebetween for the introduction of an air/fuel mixture into the fuel nozzle. A combustor-end endplate 18 has a central opening 20 to permit air and fuel to exit into a combustor, while at the opposite end another endplate 16 blocks the nozzle flow area. The scrolls are secured between these endplates. A centerbody 12 is located between the scrolls coaxial with the axis. The centerbody 12 has a base 58 which includes at least one air supply port extending therethrough, and an internal passageway 64. It includes a frustum portion (54) and aerodynamic ramps theat prevent flow reversal and flame stabilisation between the endplates 16,18.
摘要:
A combustor (56) for a turbine engine (20) includes a first liner (60) defined about an axis (A) with a first row (110) of first combustion air holes (114, 116, 118), one of the fist combustion air holes (114) is defined along each of a multiple of fuel injector zero pitch lines (L1, L2). A second liner (62) defined about the axis (A) with a second row (112) of second combustion air holes (120, 122), each of the second combustion air holes (120, 122) circumferentially offset relative to each of the multiple of fuel injector zero pitch lines (L1, L2).