Abstract:
A fuel injector (600) for a gas turbine engine (100) is disclosed. The fuel injector (600) includes two primary tubes, a secondary tube (603), a primary gas gallery (643), and a secondary gas gallery (644). The two primary tubes are connected in a parallel configuration to provide a main gas fuel to the primary gas gallery (643). The secondary tube (603) provides the main gas fuel to the secondary gas gallery (644) independent from the two primary tubes and the primary gas gallery (643). The primary gas gallery (643) and the secondary gas gallery (644) provide the main gas fuel to a premix passage (669) independently allowing for robust control of the gas turbine engine (100).
Abstract:
A method of reconditioning and fabricating turbine components is provided. In one embodiment, the method is performed on a fuel nozzle assembly of a gas turbine, and comprises providing a pre-assembled fuel nozzle assembly having a base, a body extending from the base to a fuel nozzle tip, an inner assembly, and an outer assembly. The method further comprises removing at least a portion of the fuel nozzle tip and the inner assembly, coupling and joining a replacement inner assembly to the base, and coupling and joining a replacement fuel nozzle tip to the replacement inner assembly and to the outer assembly to provide a reconditioned fuel nozzle.
Abstract:
A multi-fuel nozzle for a combustion turbine engine and method regarding such a multi-fuel nozzle are provided. The nozzle includes a support flange (12). A first fuel-injecting stage (14) defines a first conduit extending along a longitudinal axis of the nozzle. A second fuel-injecting stage (16) defines a second conduit coaxially disposed about the first fuel-injecting stage. The first and second fuel-injecting stages mutually share a flow-separating wall (18) between one another. A slip-fit joint (20) to mechanically couple the flow-separating wall to the support flange. The slip-fit joint is configured to accommodate thermally-induced axial movement of the flow-separating wall in the varying thermal environment of the combustion turbine engine
Abstract:
Gas turbine combustion systems and fuel cartridge assemblies are provided. An exemplary combustion system may comprise a combustor including a cylindrical combustion liner, a flow sleeve, a main mixer, a radial inflow swirler, a combustor dome, and a fuel cartridge assembly. An exemplary combustor and/or fuel cartridge assembly may comprise first and second fuel circuits or manifolds. Methods and systems are also provided for staging and controlling a flow of fuel and/or water through different fuel circuits and pilot injectors, to allow purging and ignition using different fuel circuits, pilot injectors, and fuel sources.
Abstract:
An injector including a housing having a fluid channel for fluid and a plurality of injector modules fluidly connected to the fluid channel, where each injector module includes a spray cup having a plurality of radial air passages for directing air radially inwardly into the chamber, and a pressure swirl atomizer having a fluid passage for directing fluid in the axial direction and at least one air passage radially outwardly spaced from the fluid passage for directing air in the axial direction, wherein at least one of the injector modules is axially recessed relative to the other injector modules. By axially recessing at least one of the injector modules, a sheltered burning zone may be provided to enhance flame stability when injecting a mixture of air and fuel from the recessed module.
Abstract:
A liquid fuel lance (156) for a burner (30) of a combustor (16) of a gas turbine combustor, a liquid fuel system incorporating the liquid fuel lance and a method of operating the liquid fuel system are disclosed. The liquid fuel lance (156) comprises an elongate liquid fuel lance body (68) and a liquid fuel tip (172). The elongate liquid fuel lance body (168) comprises a fuel flow passage (170) and at least a first air passage (130A) and a second air passage (130B, 130C). A liquid fuel tip (172) defines a fuel outlet (186) and arranged about the fuel outlet 186 at least a first outlet (190A) and a second outlet (190B, 190C) to which air is independently supplied by the first air passage (130A) and the second air passage (130B, 130C) respectively, and wherein the amount of air supplied to the first air passage (130A) is variable.
Abstract:
It is described a pilot burner (1) for a gas turbine (12), comprising an annular base body (2) with a fuel inlet pipe (5), an air inlet pipe (6) and a mixture outlet pipe (3) connected at a connection section (7). Said fuel inlet pipe (5) and said air inlet pipe (6) comprise separate means (8, 9) for axially swirling of the transported media, e.g. embodied as helical grooves and/or fins (8) in the inlet pipes (5, 6) or embodied as a helically shaped part (9) of said inlet pipes (5, 6). Furthermore, a gas turbine (12) comprising a compressor (13), a combustion chamber (14), a turbine (15) and a pilot burner (1) of the kind above is disclosed.
Abstract:
The invention relates to a burner arrangement (1) for a combustion chamber, in particular a gas turbine combustion chamber, for burning fluidic fuels, having a main burner (2) and a pilot burner (3), arranged centrally therein, which serves to ignite and/or stabilize the combustion of the main burner (2), the main burner (2) comprising a first annular air duct (4) for supplying combustion air (5) and first fuel nozzles (6) for injecting a fuel (7) into the first annular air duct (4), the pilot burner (3) comprising a second annular air duct (8) for supplying combustion air (5) and second fuel nozzles (9) for injecting a fuel (7) into the second annular air duct (8), wherein the second fuel nozzles (9) are provided as first and second fuel stages (10, 11).
Abstract:
Injecteur (10) de carburant, tel qu'un injecteur pour une chambre annulaire de combustion de turbomachine, comprenant une tête (16) aval comportant une sortie centrale (22) et une sortie annulaire périphérique (24) entourant la sortie centrale (22), et un bras d'injecteur (12) en amont de la tête (16) comportant un canal central (18) et un canal annulaire (20) coaxiaux, caractérisé en ce que le canal central (18) est en communication fluidique avec la sortie périphérique (24) et le canal annulaire (20) est en communication fluidique avec la sortie centrale (22).