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公开(公告)号：CA2580670A1
公开(公告)日：2007-10-04
申请号：CA2580670
申请日：2007-03-05
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SOWA WILLIAM A , NAGENDRA SOMANATH , KUMAR KESHAVA B
Abstract: A mid-turbine frame connected to at least one mount of a gas turbine engine transfers a first load from a first bearing and a second load from a second bearing to the mount. The mid-turbine frame includes a single point load structure and a plurality of struts. The single point load structure combines the firs t load and the second load into a combined load. The plurality of struts is connect ed to the single point load structure and transfers the combined load from the single point load structure to the mount.
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公开(公告)号：DE69727899T2
公开(公告)日：2004-07-29
申请号：DE69727899
申请日：1997-12-22
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SNYDER TIMOTHY S , SOWA WILLIAM A , KRAMER STEPHEN K
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公开(公告)号：DE69822102T2
公开(公告)日：2004-07-22
申请号：DE69822102
申请日：1998-12-10
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SNYDER TIMOTHY S , SOWA WILLIAM A , MORFORD STEPHEN A , VAN DYKE KEVIN J
Abstract: A tangential entry premixing fuel injector (10) for a gas turbine engine combustor includes a pair of offset scrolls (18) whose ends define a pair of entry slots (36) for admitting primary combustion air tangentially into a mixing chamber (28) bounded by the scrolls (18) and by longitudinally spaced endplates (14,16). An array of fuel injection passages (42) extends along the length of the slots. The passage array is configured to inject a primary fuel nonuniformly along the length of the air entry slots and to control the fuel penetration depth d in proportion to slot height H. The injector also includes a flame disgorging centerbody (48) having a bluff tip (54) longitudinally aligned with the injector's discharge plane (22) and a secondary fuel conduit (80) extending through the centerbody for discharging a secondary combustible fluid, preferably gaseous fuel, through a series of fuel discharge openings (84) in the tip (54). The flame disgorging centerbody improves fuel injector durability by resisting ingestion of combustion flame into the mixing chamber (28) and reliably disgorging any flame that is ingested.
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公开(公告)号：DE69727899D1
公开(公告)日：2004-04-08
申请号：DE69727899
申请日：1997-12-22
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SNYDER TIMOTHY S , SOWA WILLIAM A , KRAMER STEPHEN K
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公开(公告)号：CA2272112A1
公开(公告)日：1999-11-18
申请号：CA2272112
申请日：1999-05-17
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SOWA WILLIAM A , CHIAPPETTA LOUIS M , KENDRICK DONALD W
Abstract: A premixing fuel injector for an industrial gas turbine engine includes an axially extending centerbody (58) and a pair of radially offset scrolls (18) bounding a mixing chamber (24). The leading end (28) of each scroll cooperates with the trailing end (34) of the neighboring scroll to define an intake slot (42) for admitting a stream of primary combustion air (44) tangentially into the mixing chamber. Fuel injection passages extend along each intake slot for injecting jets (76a, 76b) of primary fuel into the incoming airstream (44). The injector is operable in a prescribed or normal state, and in a degraded state associated with the presence of undesirable combustion inside the mixing chamber. The fuel injection passages are oriented and positioned so that the fuel jets issuing therefrom are ineffective at sustaining the undesirable combustion for more than a limited interval of time. In one embodiment of the invention, the injection passages are positioned so that the trailing end (34) of the neighboring scroll acts as a physical barrier to limit radial penetration of the fuel jets when the injector operates in the degraded state.
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Patent Agency Ranking
公开(公告)号：DE69832427D1
公开(公告)日：2005-12-22
申请号：DE69832427
申请日：1998-12-10
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SYNDER TIMOTHY S , MORFORD STEPHEN A , SOWA WILLIAM A , VAN DYKE KEVIN J
Abstract: A tangential entry premixing fuel injector (10) for a gas turbine engine combustor includes a pair of offset scrolls (18) whose ends define a pair of entry slots (36) for admitting primary combustion air tangentially into a mixing chamber (28) bounded by the scrolls (18) and by longitudinally spaced endplates (14,16). An array of fuel injection passages (42) extends along the length of the slots. The passage array is configured to inject a primary fuel nonuniformly along the length of the air entry slots and to control the fuel penetration depth d in proportion to slot height H. The injector also includes a flame disgorging centerbody (48) having a bluff tip (54) longitudinally aligned with the injector's discharge plane (22) and a secondary fuel conduit (80) extending through the centerbody for discharging a secondary combustible fluid, preferably gaseous fuel, through a series of fuel discharge openings (84) in the tip (54). The flame disgorging centerbody improves fuel injector durability by resisting ingestion of combustion flame into the mixing chamber (28) and reliably disgorging any flame that is ingested.
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公开(公告)号：DE69912517T2
公开(公告)日：2004-08-19
申请号：DE69912517
申请日：1999-05-17
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SOWA WILLIAM A , KENDRICK DONALD W , CHIAPPETTA LOUIS M
Abstract: A premixing fuel injector (10) is provided, comprising a centerbody (58) and at least two circumferentially neighboring scrolls (18). Each scroll (18) has a circumferentially leading end (28) and a circumferentially trailing end (34) that terminates at a trailing edge (36). The scrolls (18) collectively circumscribe the centerbody (58) to radially bound a mixing chamber (24). The leading end (28) of each scroll and the trailing end (34) of the neighboring scroll define radially inner and outer extremities of an intake slot (42) for admitting a stream of air into the mixing chamber. The leading end of at least one of the scrolls (18) includes an array of axially distributed fuel injection passages (52) for introducing fuel into the air stream. The injector (10) can be used in both a prescribed state of operation and a degraded state of operation.
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公开(公告)号：RU2193686C2
公开(公告)日：2002-11-27
申请号：RU97121010
申请日：1997-12-19
Applicant: UNITED TECHNOLOGIES CORP , TATA DELAWARE
Inventor： SNYDER TIMOTHY S , KRAMER STEPHEN K , SOWA WILLIAM A
IPC: F02M61/16 , F23C7/00 , F23C7/02 , F02C7/232 , F23C99/00 , F23D11/12 , F23D11/36 , F23D17/00 , F23R3/12 , F23R3/28 , F23R3/30 , F23R3/34
Abstract: FIELD: power engineering. SUBSTANCE: proposed injector has longitudinal axis and two spiral elements with cylindrical dome, axial lines of elements being displaced relative to each other. Overlapping ends of elements form inlet slot to feed fuel-air mixture into injector. End face plate of combustion chamber is provided with central hole to feed fuel and air into combustion chamber while other opposite end face plate blocks area of injector flow. Spiral elements are secured between said end face plates. Central part is located between said elements coaxially relative to longitudinal axis and it has base with at least one hole to deliver air passing through hole and inner channel, and also truncated figure section and aerodynamically shaped inclined sections preventing formation of reverse flow and providing stabilization of flame between said end face plates. EFFECT: increased service life. 6 cl, 3 dwg
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公开(公告)号：CA2255549A1
公开(公告)日：1999-06-15
申请号：CA2255549
申请日：1998-12-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： MORFORD STEPHEN A , SOWA WILLIAM A , SNYDER TIMOTHY S , VAN DYKE KEVIN J
Abstract: A tangential entry premixing fuel injector (10) for a gas turbine engine combust or includes a pair of offset scrolls (18) whose ends define a pair of entry slots ( 36) for admitting primary combustion air tangentially into a mixing chamber (28) bounded by the scrolls (18) and by longitudinally spaced endplates (14, 16). An array of fuel injection passages (42) extends along the length of the slots. The passage array is config ured to inject a primary fuel nonuniformly along the length of the air entry slots and t o control the fuel penetration depth d in proportion to slot height H. The injector also inclu des a flame disgorging centerbody (48) having a bluff tip (54) longitudinally aligned with t he injector's discharge plane (22) and a secondary fuel conduit (80) extending through the cen terbody for discharging a secondary combustible fluid, preferably gaseous fuel, through a series of fuel discharge openings (84) in the tip (54). The flame disgorging centerbody i mproves fuel injector durability by resisting ingestion of combustion flame into the mix ing chamber (28) and reliably disgorging any flame that is ingested. The controlled fuel pe netration depth reinforces the flame disgorging capability of the centerbody by preventing fuel from penetrating into the slowly moving boundary layer attached to the centerbody (48 ). The bluff character of the centerbody, in combination with its longitudinal alignmen t with the fuel injector discharge plane, makes the centerbody capable of anchoring the fla me at the discharge plane so that combustion occurs aft of the discharge plane where the combustion flame is unlikely to damage the scrolls or centerbody. Introduction of fuel or fuel and air through the openings in the bluff tip encourage the flame to become anchored to the tip and therefore spatially stabilizes the flame, resulting in additional attenuation of acoustic oscillations and further improved combustor durability. The longitudin ally nonuniform injection of primary fuel compensates for any mixing nonuniformities attributable to the flame disgorging centerbody and therefore augments flame sta bility. The injector and an associated method of premixing fuel and air prior to combust ion suppress formation of nitrous oxides, and improve the durability of both the inj ector and the combustor.
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公开(公告)号：CA2225364A1
公开(公告)日：1998-06-20
申请号：CA2225364
申请日：1997-12-19
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SNYDER TIMOTHY S , KRAMER STEPHEN K , SOWA WILLIAM A
IPC: F02C7/232 , F02M61/16 , F23C7/00 , F23C7/02 , F23D11/12 , F23D11/36 , F23D17/00 , F23R3/12 , F23R3/28 , F23R3/30 , F23R3/34 , F23D14/62 , F23D14/02 , F23R3/16
Abstract: A method of reducing the tendency of the combustion flame to stabilize within the mixing zone of a tangential entry nozzle is disclosed which comprises mixing fuel and air in a mixing zone within a fuel nozzle assembly, thereby producing a first fu el/air mixture which is isolated from the combustion products by maintaining sufficient ly high axial velocities throughout the mixing zone and using a combination of a second internal passageway within a centerbody (either fueled or unfueled) and the surfaces of t he combustor inlet port
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