EP1512912A2 - Homogene Gemischbildung durch verdrallte Einspritzung des Kraftstoffs - Google Patents
Homogene Gemischbildung durch verdrallte Einspritzung des Kraftstoffs Download PDFInfo
- Publication number
- EP1512912A2 EP1512912A2 EP04020460A EP04020460A EP1512912A2 EP 1512912 A2 EP1512912 A2 EP 1512912A2 EP 04020460 A EP04020460 A EP 04020460A EP 04020460 A EP04020460 A EP 04020460A EP 1512912 A2 EP1512912 A2 EP 1512912A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- flow
- air
- injection
- air flow
- 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.)
- Withdrawn
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
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/14021—Premixing burners with swirling or vortices creating means for fuel or air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/14701—Swirling means inside the mixing tube or chamber to improve premixing
Definitions
- the invention relates to a fuel injection device for a gas turbine according to the features of the preamble of the main claim.
- the invention relates to a fuel injector for a gas turbine with a flow channel for the air flow, at the flow walls more Fuel holes for injecting fuel into the Air flow are formed.
- the stabilization of the combustion takes place almost exclusively with air swirl, which is a recirculation of partially combusted gases allows.
- the fuel is often centrally through a nozzle introduced, which mounted on the center axis of the atomizer is.
- the fuel is often with considerable Overpressure injected into the air flow enough to Penetration to achieve and as much air with fuel to be able to premix.
- These pressure atomizers have to one the function to directly atomize fuel. For some Designs of an injector but should the fuel sprayed as completely as possible on a nebulizer lip become. The fuel gets through the air on a nebulizer lip accelerated and at the downstream end of this lip Torn into small drops and mixed with the air.
- Another way of keeping the fuel as intense as possible to mix with a large part of the air consists in one decentralized injection from the outer boundary of the flow channel, which carries the majority of the air. This can from a nebulizer lip or even from the outer nozzle contour out. This injection is characterized that unlike a filmmaker's fuel experience a defined penetration into the main air flow should.
- the invention is based on the object, a fuel injection device to create the type mentioned, which with a simple structure and reliable applicability avoids the disadvantages of the prior art and optimized Mixing of fuel and air ensures.
- the central axes the fuel openings inclined at least in the circumferential direction are arranged.
- the invention eliminates on the one hand the disadvantages of a small number of fuel holes occur. These disadvantages the prior art are in the circumferential direction of Fuel nozzle uneven fuel distribution and one too large penetration of the fuel into the mainstream. To the others do not need the high number of fuel holes which are therefore very small and prone to clogging. This corresponds to a technically feasible fuel supply with few fuel openings at the same time good homogeneity of the air-fuel mixing process.
- the invention thus provides, by a few in the circumferential direction Employed openings fuel from the outer boundary in to introduce the air flow.
- the coiled and counter-rotating principle to the twisted Air flow can be introduced, it is ensured that through relatively large openings of the fuel with a by the swirl defined penetration depth into the regions of the Air penetrate and cause as homogeneous a mixture as possible can.
- Both the number of fuel holes is reduced, as well as the penetration depth is controlled as the Regions of high airspeed and thus high local Air mass flows in the near wall region of the outer wall of the twisted air flow occur.
- the center axes of the fuel ports may also be additional be axially inclined.
- the advantage of the invention is a practice-relevant solution of Problematic, premixing fuel homogeneously with air and here with as few, relatively large fuel holes a defined and not too large penetration depth of the Fuel into the air flow to achieve.
- Overall goal is the reduction of nitrogen oxide emissions of the gas turbine combustor with a robust and technically feasible force material injection configuration.
- a fuel nozzle according to the invention which comprises a flow channel 1, the one in Single airflow, not shown, over a Swirler, the the air flow is applied a twist, is supplied.
- One centric cone is used to align the air flow and could additionally at least one additional injector for Have fuel.
- About at least one fuel line 9 is Fuel performed a fuel ring channel 8.
- a Flow wall 2 (see enlarged view of FIG. 1) has a plurality of fuel openings 3, the central axis of the fourth each turned against the air flow in the flow channel 1 is, as this results from Fig. 1.
- FIGS. 2 and 3 show variants of the arrangement according to the invention the center axes 4 of the fuel ports 3. These are arranged inclined in the circumferential direction, so that they tangential extend to a centric circle, not shown.
- Fig. 2 shows an arrangement in which the fuel injection in the same direction to a twisting 5 of the Air flow takes place while
- Fig. 3 shows an embodiment shows, in which the center axes 4 of the fuel openings arranged in the counter-rotation to the swirl direction 5 of the air flow are.
- the invention is not limited to the embodiments shown limited, but the inclination angle of the central axes is 4th the fuel ports 3 within the scope of the invention variable. The same applies to the number and diameter of the fuel ports 3 and the associated fuel channels. in the Under the invention, it is also possible in axial staggering a plurality of fuel injection assemblies according to the invention provide, which also to each other in the opposite direction of the injection can be combined. Furthermore, the invention with various other embodiments of fuel injections combined.
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)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
Description
- Fig. 1
- eine schematische Teil-Ansicht inklusive einer vergrößerten Darstellung einer erfindungsgemäßen Kraftstoffdüse mit dezentraler Einspritzung,
- Fig. 2
- eine Teil-Schnittansicht durch die in Fig. 1 gezeigte Anordnung, wobei die Schnittrichtung eine konusförmige Gestalt längs der jeweiligen Mittelachsen der Kraftstofföffnungen hat, und
- Fig. 3
- eine Schnittansicht, analog Fig. 2, eines abgewandelten Ausführungsbeispiels der Erfindung.
- 1
- Strömungskanal
- 2
- Strömungswand
- 3
- Kraftstofföffnung
- 4
- Mittelachse der Kraftstofföffnung 3
- 5
- Drallrichtung der Luftströmung
- 6
- Drallkörper
- 7
- Konus
- 8
- Kraftstoff-Ringkammer
- 9
- Kraftstoff-Leitung
Claims (4)
- Kraftstoffeinspritzvorrichtung für eine Gasturbine, mit einem Strömungskanal (1) für eine Luftströmung, an dessen Strömungswänden (2) zumindest eine Kraftstofföffnung (3) zum Einbringen von Kraftstoff in die Luftströmung ausgebildet ist, dadurch gekennzeichnet, dass die Mittelachsen (4) der Kraftstofföffnungen (3) zumindest in Umfangsrichtung geneigt angeordnet sind.
- Kraftstoffeinspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Mittelachsen (4) der Kraftstofföffnungen (5) axial geneigt sind.
- Kraftstoffeinspritzvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Mittelachsen (4) der Kraftstoffeinspritzöffnungen (3) in Richtung eines Dralls (5) der Luftströmung angeordnet sind.
- Kraftstoffeinspritzvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Mittelachsen (4) der Kraftstofföffnungen gegen die Richtung eines Dralls (5) der Luftströmung (3) angeordnet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10340826A DE10340826A1 (de) | 2003-09-04 | 2003-09-04 | Homogene Gemischbildung durch verdrallte Einspritzung des Kraftstoffs |
DE10340826 | 2003-09-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1512912A2 true EP1512912A2 (de) | 2005-03-09 |
EP1512912A3 EP1512912A3 (de) | 2010-10-27 |
Family
ID=34129647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04020460A Withdrawn EP1512912A3 (de) | 2003-09-04 | 2004-08-27 | Homogene Gemischbildung durch verdrallte Einspritzung des Kraftstoffs |
Country Status (3)
Country | Link |
---|---|
US (1) | US7546734B2 (de) |
EP (1) | EP1512912A3 (de) |
DE (1) | DE10340826A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2667098A3 (de) * | 2012-05-25 | 2015-11-04 | Rolls-Royce plc | Flüssigkeitswirbler-Flusssteuerung |
US9310073B2 (en) | 2011-03-10 | 2016-04-12 | Rolls-Royce Plc | Liquid swirler flow control |
US9383097B2 (en) | 2011-03-10 | 2016-07-05 | Rolls-Royce Plc | Systems and method for cooling a staged airblast fuel injector |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10348604A1 (de) * | 2003-10-20 | 2005-07-28 | Rolls-Royce Deutschland Ltd & Co Kg | Kraftstoffeinspritzdüse mit filmartiger Kraftstoffplatzierung |
DE102007043626A1 (de) * | 2007-09-13 | 2009-03-19 | Rolls-Royce Deutschland Ltd & Co Kg | Gasturbinenmagerbrenner mit Kraftstoffdüse mit kontrollierter Kraftstoffinhomogenität |
US8147121B2 (en) * | 2008-07-09 | 2012-04-03 | General Electric Company | Pre-mixing apparatus for a turbine engine |
US8112999B2 (en) * | 2008-08-05 | 2012-02-14 | General Electric Company | Turbomachine injection nozzle including a coolant delivery system |
US8297059B2 (en) * | 2009-01-22 | 2012-10-30 | General Electric Company | Nozzle for a turbomachine |
US9140454B2 (en) * | 2009-01-23 | 2015-09-22 | General Electric Company | Bundled multi-tube nozzle for a turbomachine |
US8539773B2 (en) * | 2009-02-04 | 2013-09-24 | General Electric Company | Premixed direct injection nozzle for highly reactive fuels |
US8424311B2 (en) * | 2009-02-27 | 2013-04-23 | General Electric Company | Premixed direct injection disk |
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 |
US8893500B2 (en) | 2011-05-18 | 2014-11-25 | Solar Turbines Inc. | Lean direct fuel injector |
US8919132B2 (en) | 2011-05-18 | 2014-12-30 | Solar Turbines Inc. | Method of operating a gas turbine engine |
US9182124B2 (en) | 2011-12-15 | 2015-11-10 | Solar Turbines Incorporated | Gas turbine and fuel injector for the same |
US9764294B2 (en) | 2012-05-21 | 2017-09-19 | Pratt & Whitney Rocketdyne, Inc. | Liquid-gas mixer and turbulator therefor |
US9267690B2 (en) * | 2012-05-29 | 2016-02-23 | General Electric Company | Turbomachine combustor nozzle including a monolithic nozzle component and method of forming the same |
US8904798B2 (en) | 2012-07-31 | 2014-12-09 | General Electric Company | Combustor |
US9353950B2 (en) | 2012-12-10 | 2016-05-31 | General Electric Company | System for reducing combustion dynamics and NOx in a combustor |
US10184403B2 (en) * | 2014-08-13 | 2019-01-22 | Pratt & Whitney Canada Corp. | Atomizing fuel nozzle |
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US3703259A (en) | 1971-05-03 | 1972-11-21 | Gen Electric | Air blast fuel atomizer |
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EP0625373A2 (de) | 1993-05-19 | 1994-11-23 | Emerson Electric Company | Trockenabfall-Zerkleinerer |
EP1207350A2 (de) | 2000-11-14 | 2002-05-22 | ALSTOM Power N.V. | Brennkammer und Verfahren zum Betrieb dieser Brennkammer |
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-
2003
- 2003-09-04 DE DE10340826A patent/DE10340826A1/de not_active Withdrawn
-
2004
- 2004-08-27 EP EP04020460A patent/EP1512912A3/de not_active Withdrawn
- 2004-09-03 US US10/933,425 patent/US7546734B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2104455A5 (de) | 1970-08-18 | 1972-04-14 | Mitsubishi Heavy Ind Ltd | |
US3703259A (en) | 1971-05-03 | 1972-11-21 | Gen Electric | Air blast fuel atomizer |
US4425755A (en) | 1980-09-16 | 1984-01-17 | Rolls-Royce Limited | Gas turbine dual fuel burners |
US5303554A (en) * | 1992-11-27 | 1994-04-19 | Solar Turbines Incorporated | Low NOx injector with central air swirling and angled fuel inlets |
EP0625373A2 (de) | 1993-05-19 | 1994-11-23 | Emerson Electric Company | Trockenabfall-Zerkleinerer |
EP1207350A2 (de) | 2000-11-14 | 2002-05-22 | ALSTOM Power N.V. | Brennkammer und Verfahren zum Betrieb dieser Brennkammer |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9310073B2 (en) | 2011-03-10 | 2016-04-12 | Rolls-Royce Plc | Liquid swirler flow control |
US9383097B2 (en) | 2011-03-10 | 2016-07-05 | Rolls-Royce Plc | Systems and method for cooling a staged airblast fuel injector |
EP2667098A3 (de) * | 2012-05-25 | 2015-11-04 | Rolls-Royce plc | Flüssigkeitswirbler-Flusssteuerung |
Also Published As
Publication number | Publication date |
---|---|
EP1512912A3 (de) | 2010-10-27 |
US20050050895A1 (en) | 2005-03-10 |
DE10340826A1 (de) | 2005-03-31 |
US7546734B2 (en) | 2009-06-16 |
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