EP0828115B1 - Système d'injection de carburant pour une chambre de combustion - Google Patents
Système d'injection de carburant pour une chambre de combustion Download PDFInfo
- Publication number
- EP0828115B1 EP0828115B1 EP97402058A EP97402058A EP0828115B1 EP 0828115 B1 EP0828115 B1 EP 0828115B1 EP 97402058 A EP97402058 A EP 97402058A EP 97402058 A EP97402058 A EP 97402058A EP 0828115 B1 EP0828115 B1 EP 0828115B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- swirl inducer
- fuel
- air
- upstream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/10—Air inlet arrangements for primary air
- F23R3/12—Air inlet arrangements for primary air inducing a vortex
- F23R3/14—Air inlet arrangements for primary air inducing a vortex by using swirl vanes
Definitions
- the invention relates to fuel and air supply primary of a combustion chamber, especially for turbomachinery.
- a typical example of antagonistic performances is that of flame stability at idle and the need to avoid fumes and the emission of nitrogen oxides at full gas. So the injection system of fuel and air must ensure proper combustion at rpm and under very diverse conditions.
- FR-A-2 596 102 shows in FIG. 18 a mechanical injector which has a spin having an even number of fins defining an equal number of air intake passages, one passage in two being at radial inlet in order to deliver an air flow around the injection channel of fuel to constitute a first mixture in a chamber delimited by a socket with a converging / diverging internal contour, the other passages being at axial entry and delivering an air flow to the downstream periphery of the sleeve.
- the present invention proposes to produce a device mechanical injection combined with strong premix tendrils permeability which makes it possible to meet the criteria of pollution and performance, at different speeds, imposed on engine manufacturers.
- the invention therefore relates to an air injection device and fuel in a combustion chamber, in particular of turbomachine, said device comprising from upstream to downstream, an injector axis A fuel, a venturi sleeve arranged coaxially to axis A and having a converging / diverging internal contour delimiting a premix chamber in which the fuel is injected, a bowl flared downstream and having a sleeve upstream for fixing it around the socket, and means for injecting air from spraying fuel.
- this device is characterized in that the means for injecting the fuel spray air have a first high-permeability radial spin arranged upstream of the socket and allowing a first air-fuel mixture to be produced in the premix chamber, a second radial spin having a plurality of channels provided in the upstream part of the socket and opening into the converging internal contour, said second spin being intended to ensure homogeneous carburetion in the venturi, and a third axial spin arranged at the periphery of the downstream part of the bush, and by the fact that the axial outlets of the third spin circumferentially alternate with the radial outlets of the second spin.
- the inputs of the third spin are supplied in air through radial passages in the upstream part of the socket and alternating with the channels of the second spin.
- the third spin is formed by grooves in the peripheral wall of the sleeve, said grooves being covered by the bowl fixing sleeve.
- the drawing shows an air and fuel injection device 1, of this mechanical type, in a combustion chamber, not shown, of a turbomachine.
- This device 1 comprises a fuel injector 2 of axis A which injects fuel downstream into a premix chamber 3 located at the bottom of the combustion chamber upstream of the zone primary 4 combustion.
- the premix chamber 3 is delimited by the internal contour 5 of a socket 6 coaxial with the axis A.
- This internal contour 5 is extended downstream by a flared wall 7 of a traditional bowl 8.
- Bowl 8 comprises upstream of the flared wall 7 a sleeve 9 allowing its attachment to the socket 6.
- the bowl 8 is mounted in a known manner in a orifice provided in the bottom of the combustion chamber.
- the internal contour 5 of the socket 6 is convergent / divergent from upstream downstream and constitutes a venturi.
- the passages 14a, 14b of the first series of passages are radial, pass right through the upstream part 12 of the socket 6 and open upstream of the neck 15 of the venturi.
- Passages 16a, 16b of the second series of passages extend from the periphery of the part upstream 12 of the socket 6, to a zone located radially at the inside of the sleeve 9 of the bowl 8, where they axially tilt towards downstream.
- axial grooves 18a, 18b, of rectangular section which extend the passages 16a, 16b of the second series of passages and which lead to the downstream periphery of the socket 6.
- the passages 14a, 14b constitute a second radial spin intended to inject air into the premix chamber 3, and the grooves 18a, 18b, covered by the sleeve 9 of the bowl 8 constitute a third axial spin.
- the outputs of the third axial spin are alternated circumferentially with the outputs of the second radial spin.
- the number of passages 14a, 14b is equal to the number of passages 16a, 16b.
- the number of the first spin 10 is equal to the total number of passage 14a, 14b; 16a, 16b formed in the upstream part 12 of the sleeve 6.
- the first spin 10 therefore has a high permeability.
- the fins 13 are wedged tangentially by an angle ⁇ between 30 and 40 • relative to the axis A of the fuel injector 2.
- the axes of the outlet orifices of the passages 14a, 14b of the second spin are also inclined at an angle ⁇ relative to the radial at these points. The second spin therefore creates a swirling movement in the venturi.
- the fins 20 of the first radial spin 10 are also radially wedged, and preferably the first spin 10 and the second spin are contra-rotating.
- the first radial spin 10 makes it possible to produce a first premix in the bottom of the premix chamber 3. It makes plus purge office.
- the second radial spin, tangentially wedged and also radially, ensures a uniform carburetion in the venturi.
- the tangential incidence of the second radial spin must make an angle of 60 • to 90 • with respect to the tangential component of the first mixture.
- the timing of the third axial spin is determined by the blading axial located at its outlet, that is to say by the angle of the side walls of the grooves 18a, 18b relative to the axis A.
- the exit from the third axial spin can be corotative or counter-rotating with respect to the tangential component of the vortex in the venturi depending on the desired fuel table.
- the tangential tilt of the third spin is depending on the bowl technology used, depending on whether it is a bowl with conventional ports, a bowl with swirling ports corotatives or contrarotatives or a bowl without orifices.
- the ratio of the speeds of the air injected by the third spin and the mixture at the outlet of the venturi must be between 0.8 and 1.6, this report being dependent on the bowl technology used.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Nozzles (AREA)
Description
Claims (6)
- Dispositif d'injection d'air et de carburant dans une chambre de combustion, notamment de turbomachine, ledit dispositif comportant d'amont en aval, un injecteur de carburant (2) d'axe A, une douille (6) formant venturi disposé coaxialement à l'axe A et présentant un contour interne (5) convergent/divergent délimitant une chambre de prémélange (3) dans laquelle le carburant est injecté, un bol (8) évasé vers l'aval et présentant en amont un manchon (9) pour sa fixation autour de la douille (6), et des moyens pour injecter l'air de pulvérisation du carburant,
caractérisé par le fait que les moyens pour injecter l'air de pulvérisation du carburant comportent une première vrille radiale (10) à forte perméabilité disposée en amont de la douille (6) et permettant de réaliser un premier mélange air-carburant dans la chambre de prémélange (3), une deuxième vrille radiale présentant une pluralité de canaux (16a, 16b) ménagés dans la partie amont (12) de la douille (6) et débouchant dans le contour interne convergent (5), ladite deuxième vrille étant destinée à assurer une carburation homogène dans le venturi, et une troisième vrille axiale (18a, 18b) disposée à la périphérie de la partie aval (17) de la douille (6), et par le fait que les sorties axiales de la troisième vrille (18a, 18b) alternent circonférentiellement avec les sorties radiales de la deuxième vrille. - Dispositif selon la revendication 1, caractérisé par le fait que les entrées de la troisième vrille (18a, 18b) sont alimentées en air par des passages radiaux (16a, 16b) ménagés dans la partie amont (12) de la douille (6) et alternant avec les canaux (14a, 14b) de la deuxième vrille.
- Dispositif selon l'un quelconque des revendications 1 à 2, caractérisé par le fait que la troisième vrille est formée par des rainures ((18a, 18b) ménagées dans la paroi périphérique de la douille (6), lesdites rainures (18a, 18b) étant recouvertes par le manchon (9) de fixation du bol (8).
- Dispositif selon l'un quelconque des revendications 1 à 2, caractérisé par le fait que la première vrille (10) et la deuxième vrille (14a, 14b) sont contrarotatives.
- Dispositif selon la revendication 4, caractérisé par le fait que l'incidence tangentielle de l'air injectée par la deuxième vrille (14a, 14b) dans la chambre de prémélange (3) fait un angle compris entre 60• et 90• avec la composante tangentielle du premier mélange.
- Dispositif selon l'un quelconque des revendications 1 à 4, caractérisé par le fait que la deuxième vrille(14a, 14b) est calée tangentiellement et radialement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9610823 | 1996-09-05 | ||
FR9610823A FR2752917B1 (fr) | 1996-09-05 | 1996-09-05 | Systeme d'injection a degre d'homogeneisation avancee |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0828115A1 EP0828115A1 (fr) | 1998-03-11 |
EP0828115B1 true EP0828115B1 (fr) | 2003-08-13 |
Family
ID=9495455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97402058A Expired - Lifetime EP0828115B1 (fr) | 1996-09-05 | 1997-09-04 | Système d'injection de carburant pour une chambre de combustion |
Country Status (6)
Country | Link |
---|---|
US (1) | US5941075A (fr) |
EP (1) | EP0828115B1 (fr) |
JP (1) | JP3954165B2 (fr) |
CA (1) | CA2207831C (fr) |
DE (1) | DE69724054T2 (fr) |
FR (1) | FR2752917B1 (fr) |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6550251B1 (en) * | 1997-12-18 | 2003-04-22 | General Electric Company | Venturiless swirl cup |
FR2836986B1 (fr) * | 2002-03-07 | 2004-11-19 | Snecma Moteurs | Systeme d'injection multi-modes d'un melange air/carburant dans une chambre de combustion |
US6986255B2 (en) * | 2002-10-24 | 2006-01-17 | Rolls-Royce Plc | Piloted airblast lean direct fuel injector with modified air splitter |
GB2398375A (en) * | 2003-02-14 | 2004-08-18 | Alstom | A mixer for two fluids having a venturi shape |
US7104066B2 (en) * | 2003-08-19 | 2006-09-12 | General Electric Company | Combuster swirler assembly |
US7065972B2 (en) * | 2004-05-21 | 2006-06-27 | Honeywell International, Inc. | Fuel-air mixing apparatus for reducing gas turbine combustor exhaust emissions |
US7013649B2 (en) * | 2004-05-25 | 2006-03-21 | General Electric Company | Gas turbine engine combustor mixer |
JP4653985B2 (ja) * | 2004-09-02 | 2011-03-16 | 株式会社日立製作所 | 燃焼器とガスタービン燃焼器、及び空気を燃焼器に供給する方法 |
CN101095012B (zh) * | 2004-11-03 | 2010-11-10 | 阿尔斯托姆科技有限公司 | 预混合式烧嘴 |
US7340900B2 (en) * | 2004-12-15 | 2008-03-11 | General Electric Company | Method and apparatus for decreasing combustor acoustics |
US7810336B2 (en) * | 2005-06-03 | 2010-10-12 | Siemens Energy, Inc. | System for introducing fuel to a fluid flow upstream of a combustion area |
GB2432655A (en) * | 2005-11-26 | 2007-05-30 | Siemens Ag | Combustion apparatus |
JP5023526B2 (ja) * | 2006-03-23 | 2012-09-12 | 株式会社Ihi | 燃焼器用バーナ及び燃焼方法 |
EP1843098A1 (fr) * | 2006-04-07 | 2007-10-10 | Siemens Aktiengesellschaft | Chambre de combustion pour turbine à gaz |
NO325990B1 (no) * | 2006-06-23 | 2008-09-01 | Rolf B Rummelhoff | Etterbrenner for gass fra gassifiseringsanlegg for trebrensel |
FR2903169B1 (fr) * | 2006-06-29 | 2011-11-11 | Snecma | Dispositif d'injection d'un melange d'air et de carburant, chambre de combustion et turbomachine munies d'un tel dispositif |
FR2908867B1 (fr) * | 2006-11-16 | 2012-06-15 | Snecma | Dispositif d'injection d'un melange d'air et de carburant, chambre de combustion et turbomachine munies d'un tel dispositif |
EP1985924A1 (fr) * | 2007-04-23 | 2008-10-29 | Siemens Aktiengesellschaft | Dispositif de tourbillonnement |
EP1995521A1 (fr) * | 2007-05-24 | 2008-11-26 | Siemens Aktiengesellschaft | Aube de turbulence |
US8037689B2 (en) * | 2007-08-21 | 2011-10-18 | General Electric Company | Turbine fuel delivery apparatus and system |
GB2455310B (en) * | 2007-12-04 | 2009-11-18 | Siemens Ag | A combustion apparatus for a gas turbine engine |
FR2925146B1 (fr) * | 2007-12-14 | 2009-12-25 | Snecma | Systeme d'injection d'un melange d'air et de carburant dans une chambre de combustion de turbomachine |
GB0815761D0 (en) * | 2008-09-01 | 2008-10-08 | Rolls Royce Plc | Swirler for a fuel injector |
EP2169312A1 (fr) | 2008-09-25 | 2010-03-31 | Siemens Aktiengesellschaft | Agitateur à gradins pour contrôle dynamique |
US8215116B2 (en) * | 2008-10-02 | 2012-07-10 | General Electric Company | System and method for air-fuel mixing in gas turbines |
ATE540265T1 (de) * | 2009-04-06 | 2012-01-15 | Siemens Ag | Drallvorrichtung, brennkammer und gasturbine mit verbessertem drall |
FR2945854B1 (fr) | 2009-05-19 | 2015-08-07 | Snecma | Vrille melangeuse pour un injecteur de carburant dans une chambre de combustion d'une turbine a gaz et dispositif de combustion correspondant |
FR2952166B1 (fr) * | 2009-11-05 | 2012-01-06 | Snecma | Dispositif melangeur de carburant pour chambre de combustion de turbomachine comprenant des moyens ameliores d'alimentation en air |
US20110107767A1 (en) * | 2009-11-06 | 2011-05-12 | General Electric Company | Secondary fuel nozzle venturi |
JP5083302B2 (ja) * | 2009-12-14 | 2012-11-28 | 株式会社日立製作所 | 燃焼器とガスタービン燃焼器、及び空気を燃焼器に供給する方法 |
US8453454B2 (en) * | 2010-04-14 | 2013-06-04 | General Electric Company | Coannular oil injection nozzle |
US8640463B2 (en) * | 2011-06-28 | 2014-02-04 | United Technologies Corporation | Swirler for gas turbine engine fuel injector |
CN103836647B (zh) * | 2014-02-27 | 2015-07-29 | 中国科学院工程热物理研究所 | 一种文丘里管流道壁面结构 |
US20160265779A1 (en) * | 2015-03-11 | 2016-09-15 | General Electric Company | Twin radial splitter-chevron mixer with converging throat |
ITUA20163988A1 (it) * | 2016-05-31 | 2017-12-01 | Nuovo Pignone Tecnologie Srl | Ugello carburante per una turbina a gas con swirler radiale e swirler assiale e turbina a gas / fuel nozzle for a gas turbine with radial swirler and axial swirler and gas turbine |
US10012196B1 (en) * | 2017-08-30 | 2018-07-03 | Caterpillar Inc. | Duct structure for fuel injector assembly |
US10801726B2 (en) | 2017-09-21 | 2020-10-13 | General Electric Company | Combustor mixer purge cooling structure |
US11346557B2 (en) * | 2019-08-12 | 2022-05-31 | Raytheon Technologies Corporation | Aerodynamic guide plate collar for swirler assembly |
US11378275B2 (en) * | 2019-12-06 | 2022-07-05 | Raytheon Technologies Corporation | High shear swirler with recessed fuel filmer for a gas turbine engine |
US11280495B2 (en) * | 2020-03-04 | 2022-03-22 | General Electric Company | Gas turbine combustor fuel injector flow device including vanes |
CN111578313B (zh) * | 2020-05-25 | 2021-11-12 | 中国航发湖南动力机械研究所 | 气动辅助雾化的燃油预分配装置 |
US11598526B2 (en) | 2021-04-16 | 2023-03-07 | General Electric Company | Combustor swirl vane apparatus |
US11846423B2 (en) | 2021-04-16 | 2023-12-19 | General Electric Company | Mixer assembly for gas turbine engine combustor |
US11802693B2 (en) | 2021-04-16 | 2023-10-31 | General Electric Company | Combustor swirl vane apparatus |
CN116136308A (zh) * | 2021-11-16 | 2023-05-19 | 通用电气公司 | 具有压降吹扫通道的旋流器套圈板 |
CN116147016A (zh) * | 2021-11-22 | 2023-05-23 | 通用电气公司 | 用于燃料-空气混合器组件的套圈 |
US12072099B2 (en) * | 2021-12-21 | 2024-08-27 | General Electric Company | Gas turbine fuel nozzle having a lip extending from the vanes of a swirler |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1014072A (fr) * | 1950-03-08 | 1952-08-08 | Chantier Et Ateliers De Saint | Distributeur d'air à grande turbulence |
US2958195A (en) * | 1959-02-25 | 1960-11-01 | Philip G Dooley | Air inlet construction |
FR1331085A (fr) * | 1962-07-31 | 1963-06-28 | Prvni Brnenska Strojirna Zd Y | Brûleur pour combustible liquide ou gazeux notamment pour turbines à gaz |
US3570242A (en) * | 1970-04-20 | 1971-03-16 | United Aircraft Corp | Fuel premixing for smokeless jet engine main burner |
US3972182A (en) * | 1973-09-10 | 1976-08-03 | General Electric Company | Fuel injection apparatus |
US4263780A (en) * | 1979-09-28 | 1981-04-28 | General Motors Corporation | Lean prechamber outflow combustor with sets of primary air entrances |
FR2596102B1 (fr) * | 1986-03-20 | 1988-05-27 | Snecma | Dispositif d'injection a vrille axialo-centripete |
DE4228816C2 (de) * | 1992-08-29 | 1998-08-06 | Mtu Muenchen Gmbh | Brenner für Gasturbinentriebwerke |
GB2272756B (en) * | 1992-11-24 | 1995-05-31 | Rolls Royce Plc | Fuel injection apparatus |
EP0895024B1 (fr) * | 1993-07-30 | 2003-01-02 | United Technologies Corporation | Mélangeur à tourbillon pour une chambre de combustion |
-
1996
- 1996-09-05 FR FR9610823A patent/FR2752917B1/fr not_active Expired - Fee Related
-
1997
- 1997-08-04 CA CA002207831A patent/CA2207831C/fr not_active Expired - Fee Related
- 1997-08-19 US US08/912,815 patent/US5941075A/en not_active Expired - Lifetime
- 1997-09-04 DE DE69724054T patent/DE69724054T2/de not_active Expired - Lifetime
- 1997-09-04 EP EP97402058A patent/EP0828115B1/fr not_active Expired - Lifetime
- 1997-09-05 JP JP24130697A patent/JP3954165B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2752917B1 (fr) | 1998-10-02 |
EP0828115A1 (fr) | 1998-03-11 |
CA2207831C (fr) | 2006-05-30 |
FR2752917A1 (fr) | 1998-03-06 |
DE69724054D1 (de) | 2003-09-18 |
JPH1089688A (ja) | 1998-04-10 |
CA2207831A1 (fr) | 1998-03-05 |
JP3954165B2 (ja) | 2007-08-08 |
DE69724054T2 (de) | 2004-04-15 |
US5941075A (en) | 1999-08-24 |
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