摘要:
A combustor (16) for a turbomachine includes a rich combustion zone (41) and a low temperature zone (43) downstream of the rich combustion zone. A heat exchanger (100) is positioned downstream of the rich combustion zone and upstream of the low temperature zone. The heat exchanger includes a plurality of air passages, a plurality of air inlets in fluid communication with the plurality of air passages, and a plurality of combustion gas passages. Each of the combustion gas passages extends between a combustion gas inlet in fluid communication with the rich combustion zone and a combustion gas outlet in fluid communication with the low temperature zone. The plurality of combustion gas passages are in thermal communication with the plurality of air passages.
摘要:
A combustion chamber includes an inner wall, an outer wall surrounding the inner wall, and a flow passage between the inner wall and outer wall that permits forward flow and restricts reverse flow. The inner wall has a plurality of effusion holes in fluid communication with the inside of the combustion chamber. The outer wall has a plurality of cooling side holes in fluid communication with a cooling source. The inner wall and the outer wall define a flow passage therebetween that fluidly connects one or more of the cooling side holes with one or more of the effusion holes. The flow passage has a geometric configuration to permit forward flow of gases through the flow passage from the cooling source to the inside of the combustion chamber and to restrict reverse flow of gases through the flow passage from the inside of the combustion chamber to the cooling source. The permitted flow rate is greater than the restricted flow rate.
摘要:
A fuel injector 100 includes a frame 304 and a pair of fuel injection bodies 340 coupled to the frame. The frame has interior sides that define an opening for passage of a first fluid. Inlet flow paths for the first fluid are defined at least between the interior sides of the frame and the respective fuel injection bodies. Each fuel injection body defines a fuel plenum 350 and includes at least one fuel injection surface that defines a plurality of fuel injection holes 354 in communication with the fuel plenum. An outlet member 310 is located downstream of, and in fluid communication, with the inlet flow paths. The outlet member is configured to produce discrete outlet flow paths exiting the outlet member via struts, flow diverters, and/or separate outlet members.
摘要:
Combustor device (1) for a gas turbines engines (100) comprising a first (11) and a second (13) tubular members telescopically fitted in axially sliding manner to one another with the interposition of annular centering and sealing means (14, 15) which include at least a centring annular shoulder (14) and a sealing ring (15) arranged coaxial to one another; said sealing ring (15) being axially spaced apart from said centring annular shoulder (14) so that the axial distance (d) between the centring annular shoulder (14) and the sealing ring (15) is greater than the maximum axial movement (w) allowed between said first (11) and said second (13) tubular members.
摘要:
A dual fuel concentric nozzle for a gas turbine, in particular for a dual fuel injector of a sequential burner of a sequential gas turbine; the dual fuel concentric nozzle (37) comprising: - a nozzle downstream end configured to inject gas fuel, liquid fuel and carrier air along a hot gas main flow (M); - a liquid fuel duct (43) defining a liquid fuel passage for connecting a liquid fuel supply (41) to the nozzle downstream end, the liquid fuel duct (43) comprising a downstream end edge at the nozzle downstream end; - a gas fuel duct (44) concentrically surrounding the liquid fuel duct (43) and defining a gas fuel passage between the outer surface of the liquid fuel duct (43) and the inner surface of the gas fuel duct (44) for connecting a gas plenum to the nozzle downstream end, the gas fuel duct (44) comprising a downstream end edge at the nozzle downstream end; - a lateral wall (42) concentrically surrounding the gas fuel duct (44) and defining a carrier air passage between the outer surface of the gas fuel duct (44) and the inner surface of the lateral surface (42) for connecting an air plenum (40) to the nozzle downstream end, the lateral surface (42) comprising a downstream end edge at the nozzle downstream end; wherein the downstream end edge of the gas fuel duct (44) is recessed inside the nozzle downstream end with respect to the downstream end edge of the liquid fuel duct (43).
摘要:
The reheat burner (1) comprises a channel (2) with a lance (3) projecting thereinto to inject a fuel over an injection plane (4) perpendicular to a channel longitudinal axis (15). The channel (2) and lance (3) define a vortex generation zone (6) upstream of the injection plane (4) and a mixing zone (9) downstream of the injection plane (4) in the hot gas (G) direction. The mixing zone (9) has a cross section with diverging side walls (20) in the hot gas (G) direction. The diverging side walls (20) define curved surfaces in the hot gas (G) direction having a constant radius (R).
摘要:
Disclosed is an aerodynamically shaped body (1) for use in a hot fluid flow. The body (1) extends along a camber line (100) from a leading edge (11) to a trailing edge (12). The body comprises at least one coolant supply plenum (101) provided inside the body, wherein the coolant supply plenum is delimited by a body wall, wherein the body wall extends from a first side of the camber line (100) to a second side of the camber line (100) and extends over the leading edge (11), thereby providing a leading edge wall section. The wall further comprises an inner surface facing the coolant supply plenum (101) and an outer surface. At least one first leading edge cooling duct (20) extends from the inner surface to the outer surface and is in fluid communication with the coolant supply plenum (101) through an inlet opening (21) and opens out onto the outer surface through a discharge opening (22). The inlet opening (21) is provided on a first side of the camber line (100), the discharge opening (22) is provided on a second side of the camber line (100), and the leading edge cooling duct (20) is provided inside the wall and extending inside the wall from the first side of the camber line (100) to the second side of the camber line (100) and thereby crossing the camber line (100,) in a leading edge (11) region.
摘要:
The invention refers to a gas turbine (1) with a sequential combustor arrangement (4) comprising a first combustor with a first burner (106) for admitting a first fuel (28) into a combustor inlet gas during operation and a first combustion chamber (101) for burning the first fuel (28), a dilution gas admixer (27) for admixing a dilution gas (33) to the first combustor combustion products (35) leaving the first combustion chamber (101), a second burner (103) for admixing a second fuel (29) and a second combustion chamber (102). To assure a temperature profile after the dilution gas admixer (27) and to increase the gas turbine's (1) power and efficiency a vane (11) and/or blade (10) of the turbine (5) has a closed loop cooling. The outlet of the closed loop cooling (17) is connected to the dilution gas admixer (27) for admixing the heated cooling gas leaving the vane (11) and/or blade (10) into the first combustor combustion products (35). The disclosure further refers to method for operating a gas turbine (1) with such a sequential combustor arrangement (4) and closed loop cooling (17).
摘要:
The present invention generally relates to a sequential combustor for a gas turbine. The invention additionally refers to a method for operating the same. Specifically, the invention concerns the second and/or subsequent stages of a re-heat, sequential or axiallystaged combustion system. According to the invention, variation in Mach number along the flow path is used to control static temperature variation, which in turn influences the progress of auto-ignition reactions that eventually lead to the onset of combustion.
摘要:
This application describes a mixing system 32 for a gas turbine combustor arrangement, the mixing system 32 comprising a lobed mixer 10 and a wall 40, 42 enclosing a fluid flow path 34, wherein the lobed mixer 10 is arranged in the wall 40, 42 between a first part of the wall 40 and a second part of the wall 42, and wherein the first part of the wall 40 and the second part of the wall 42 are spaced apart in the direction of a lobed mixer axis 50. Details of the lobed mixer 10 and a method of mixing two flows in a mixing system are also described.