Abstract:
The invention relates to a burner for a gas turbine (10), wherein the burner (30) comprises a combustion chamber (28), a preheating device adapted to preheat air before it enters the combustion chamber (28) and a swirler (107) adapted to guide a swirler air flow (125) that comprises the preheated air to the combustion chamber (28), wherein the swirler (107) comprises a base plate (116) with a surface that confines the swirler air flow (125), wherein the surface has a hole (103) adapted to inject a liquid fuel into the swirler air flow (125) and the base plate has a channel (131 to 134) for transporting the liquid fuel to the hole (103), wherein at least a part of the channel (131 to 134) is oriented essentially parallel to the surface so that the liquid fuel can stream essentially parallel to the surface and can be preheated by the swirler air flow (125).
Abstract:
Systems and methods for dual-fuel operation of a gas turbine combustor are provided. An exemplary gas turbine combustor may comprise one or more components, such as a cylindrical combustion liner, a flow sleeve, a main mixer, a radial inflow swirler, a combustor dome, and a fuel cartridge assembly, one or more of which may be configured to supply either a gaseous or a liquid fuel to the combustion liner, depending on whether gaseous fuel operation or liquid fuel operation of the combustor is desired.
Abstract:
Gas turbine combustion systems and fuel cartridge assemblies are provided. An exemplary combustion system may comprise a combustor including one or more components, such as a cylindrical combustion liner, a flow sleeve, a main mixer, a radial inflow swirler, a combustor dome, and a fuel cartridge assembly. An exemplary fuel cartridge assembly may comprise first and second fuel manifolds which are connected to respective fuel circuits which supply fuel, such as liquid fuel, through a plurality of fuel passages within the fuel cartridge assembly or to other locations within an associated combustor. The fuel cartridge assembly may further include a plurality of fuel injector tips located at a tip plate of the fuel cartridge assembly through which fuel may be supplied to an associated combustor.
Abstract:
Die Erfindung betrifft eine Brenneranordnung (1) für eine Brennkammer, insbesondere eine Gasturbinenbrennkammer, zum Verfeuern fluidischer Brennstoffe, mit einem Hauptbrenner (2) und einem zentral darin angeordneten Pilotbrenner (3), der zum Zünden und/oder zum Stabilisieren der Verbrennung des Hauptbrenners (2) dient, der Hauptbrenner (2) umfassend einen ersten Ringluftkanal (4) zur Zuführung von Verbrennungsluft und erste Brennstoffdüsen (5) zum Eindüsen eines Brennstoffs in den ersten Ringluftkanal (4), der Pilotbrenner (3) umfassend einen zweiten Ringluftkanal (6) zur Zuführung von Verbrennungsluft und einem Brennerkopf (7) mit zweiten Brennstoffdüsen (8) zum Eindüsen eines Brennstoffs in den zweiten Ringluftkanal (6), wobei die zweiten Brennstoffdüsen (8) als getrennt ansteuerbare erste und zweite Brennstoffstufen (9, 10) vorgesehen sind, wobei zum Zuführen von Brennstoff zu den ersten und zweiten Brennstoffstufen (9, 10) ein an den Brennerkopf (7) anschließendes Brennerträgerrohr (11) mit einer Rohrwand (12) vorgesehen ist, und dass die Rohrwand (12) parallel zur Längsachse (13) des Brennerträgerrohres (11) mindestens eine erste und eine zweite Tieflochbohrung (14, 15) für die Versorgung der ersten und zweiten Brennstoffstufen (9, 10) mit Brennstoff aufweist.
Abstract:
The invention relates to a swirler for use in a combustor of a gas turbine engine, comprising a plurality of generally radially inwardly extending passages arranged circumferentially staggered in a circle, each passage having a radially outer inlet end, a radially inner outlet end, first and second generally radially inwardly extending lateral surfaces, and a base surface and top surface, in use of the swirler fuel and air travelling along the passages from their inlet ends to their outlet ends so as to create adjacent to the outlet ends a swirling fuel/air mixture, wherein at least one surface of at least one passage comprises at least one gas fuel injection hole, characterized in that the surface, having the gas fuel injection hole, comprises at least one counterbore radially surrounding the gas fuel injection hole, wherein the gas fuel injection hole is arranged at a base of the counterbore.
Abstract:
The present invention discloses a fuel nozzle assembly and method for axially staging fuel injection. The fuel nozzle assembly comprises a plurality of vanes connected to a core, with an annular ring connectedly surrounding the plurality of vanes. Fuel is directed through the core and then then through the vanes and is injected at different axial planes generally perpendicular to an oncoming air stream to obtain a broad spectrum of gas residence time between the point of fuel injection and the flame.
Abstract:
A combustor inlet mixing system formed from a plurality of circumferentially spaced swirler vanes (38) extending radially outward from a nozzle hub. Each of the swirler vanes (38) may have a length (62) that extends downstream along at least a portion of the combustor inlet mixing system (10), and may further have a thickness (66) that extends along a circumference of the nozzle hub. At least one of the swirler vanes (38) may further have at least one slot (42) cut entirely through the thickness (66) of a portion of the swirler vane (38). The slot may separate the swirler vane (38) from the nozzle hub along a portion of the length (62) of the swirler vane (38).
Abstract:
Pour améliorer le mélange air carburant au sein d'un système d'injection (42) équipant une chambre de combustion (18) de turbomachine, il est proposé une couronne d'admission d'air (56) dont la paroi annulaire de déflection (66), ou venturi, présente un profil interne (68) pourvu d'un décrochement (90) induisant un accroissement du rayon(φ)du profil interne en aval du décrochement. Il est aussi proposé un procédé d'atomisation de carburant, dans lequel du carburant(82) ruisselant sur le profil interne(68) de la paroi annulaire de déflection (66) se détache de ce profil interne au niveau du décrochement(90) de manière à former des gouttelettes au sein d'un flux d'air(76) issu d'un espace de circulation d'air amont (62) de la couronne d'admission d'air(56).
Abstract:
The invention relates to a multi-fluid mixer (28) for mixing a plurality of fluids comprising a housing (68), a first fluid inlet (32) for introducing a first fluid (74) into the housing (68) and a second fluid inlet (34) for introducing a second fluid (76) into the housing (68). A uniform mixture of the fluids (74, 76) can be achieved cost-effectively in that a swirling device (78) for swirling both fluids (74, 76) is arranged in the housing (68).
Abstract:
A burner (30) for a combustor (56) of a gas turbine combustor (16) comprises a body (53) having a surface (64) and a burner axis (50), a fuel lance (56), an igniter (58) and a main air flow passage (62) or passages (62). The main air flow passage (62) or passages (62) is angled relative to the burner axis (50) and creates a main vortex (34C) about the burner axis (50) in a first rotational direction, the main vortex travels in a direction along the burner axis (50) and away from the surface (64). The fuel lance (56) is located downstream of the igniter (58) with respect to the first rotational direction of the main vortex so that a part of a main air flow (34A) washes over the fuel lance (56) and then over the igniter (58). The fuel lance (56) comprises a fuel lance axis (79), a liquid fuel tip (72) having a fuel outlet (86) and an array of air assist passages (88) having outlets (90) arranged about the fuel outlet (86). The air assist passages (88) are angled relative to the fuel lance axis (79) to create an air assist vortex about the fuel lance axis (79) in the same rotational direction to the first rotational direction.