EP0910776B1 - Brenner mit zerstäuberdüse - Google Patents
Brenner mit zerstäuberdüse Download PDFInfo
- Publication number
- EP0910776B1 EP0910776B1 EP97936627A EP97936627A EP0910776B1 EP 0910776 B1 EP0910776 B1 EP 0910776B1 EP 97936627 A EP97936627 A EP 97936627A EP 97936627 A EP97936627 A EP 97936627A EP 0910776 B1 EP0910776 B1 EP 0910776B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- atomiser
- burner
- component
- fuel
- 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
- 238000002485 combustion reaction Methods 0.000 claims abstract description 34
- 239000000446 fuel Substances 0.000 claims abstract description 23
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 241001156002 Anthonomus pomorum Species 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
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
-
- 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
- F23D2900/11101—Pulverising gas flow impinging on fuel from pre-filming surface, e.g. lip atomizers
Definitions
- the invention relates to a burner for combustion chambers of gas turbines according to the Preamble of claim 1.
- a burner is in the German patent application P 44 44 961.
- the reduction of pollutants in the combustion of kerosene in combustion chambers of aircraft engines is a constant development goal.
- the pollutant-reduced combustion chamber is a starting point.
- components of the combustion chamber be optimized. For example, it applies to fuel in all operating areas atomize as finely as possible and mix with the combustion air.
- This fuel preparation is used in the combustion chambers of modern aircraft gas turbines Air atomizing nozzles accomplished. The fuel flows according to their operating principle on a cylindrical surface to the end where due to air shear forces atomization begins.
- the mass flow of the secondary air flow must be greater than that of the primary airflow, so in the short distance from the end of the atomizer lip until it enters the combustion chamber, the peripheral pulse of the secondary air flow is not completely broken down and the formation of the recirculation vortex is endangered becomes. This in turn results in the distribution of the air-fuel ratio does not have the desired homogeneity at the nozzle outlet because the primary Airflow that is primarily involved in the mixing process is less than that secondary airflow is.
- An injection device for a combustion chamber is known from GB 2 272 756 A, which comprises an atomizer, several channels and a premixing section, the First of all, fuel to the guiding elements surrounding the channels with atomizer lips atomized and then in the premixing section with the air streams the channels that open into the premixing section are mixed.
- the premixing section is convergent-divergent to ensure good mixing of the atomized To ensure fuel with the air flows.
- GB 1 099 959 and GB 2 094 464 A describe a burner for solid or liquid Fuels disclosed in which the fuel mixes with multiple air streams is, whose channels through concentrically arranged pipes with divergent outlet nozzles be formed. When using liquid fuels, this is in one Pressure atomization at the point of entry into the nozzle area.
- the object of the invention is a generic burner specify a largely homogeneous distribution of the air-fuel mixture in the combustion chamber.
- the invention has the advantage that by twisting the two in the same direction Airflows considering mixing them before entering the combustion chamber to a high peripheral speed must not be avoided, so that too Dimensional current ratio can be selected regardless of the swirl of the currents can to make the distribution of the air-fuel mixture homogeneous. Regardless of a mixture of the two streams, the swirl number of the Air flow can be varied to a detached or a wall-to-wall Set the flow state in the combustion chamber. By positioning the atomizer lip narrowest flow cross-section in the atomizer nozzle or shortly before can atomize the fuel in a range of maximum air shear forces take place so that the atomization can take place optimally.
- the burner 1 shown in FIG. 1 is one of several arranged in a ring Burners of the combustion chamber 2 shown in sections of a not shown Aircraft gas turbine.
- the burner 1 has an atomizing nozzle 3 with a primary and a secondary Flow channel 4 or 5 and an injection nozzle 15.
- the two flow channels 4, 5 are in their channel course by ring or sleeve-shaped components 6, 7 determined and limited.
- the two concentric to the burner axis Z Flow channels 4, 5 each have a radial inlet section E. in order to then be deflected into a substantially axially extending outlet section A. to become.
- the sleeve-shaped component 6 separates the two channels 4, 5 from one another and has an annular atomizer lip in its downstream portion 8 with a conical taper.
- the component 6 On its upstream section the component 6 has a radially extending flange 9, the two axially spaced, annular inlet sections E of the channels 4.5 separates.
- the secondary flow channel running between the two components 6 and 7 5 is in its radially extending inlet section E of two parallel, annular wall sections of the two components 6 and 7 limited.
- the secondary flow channel 5 In the outlet section A, the secondary flow channel 5 is downstream radially outward from one, seen in the direction of flow, convergent-divergent running inner wall I of component 7 limited.
- the atomizer lip 8 ends immediately in front of the location with the narrowest flow cross section Q, which through the convergent-divergent course of the component 7 is defined so that downstream the atomizer lip 8, within the divergent section of the component 7 and downstream this results in a homogeneous mixing of the two air flows.
- the conically tapered inner wall of the atomizer lip 8 is by means of the injector 15 arranged in the primary flow channel 4 fine fuel sprayed in the form of a cone widening downstream like a fan, see above that it is deposited on the inner wall like a film.
- the same directional twist is responsible for the formation of the rotation vortex W the air flow in the flow channels 4 and 5, which in each case in the Entry sections E of the flow channels 4 and 5 arranged swirl devices 12 is generated.
- the cross sections of the two flow channels 4, 5 are dimensioned such that a mass flow ratio between primary and secondary air flow of is greater than 0.4. This ensures homogeneous mixing of the combustion chamber guaranteed with air-fuel mixture.
- the swirl formation in the same direction in the Flow channels 4 and 5 by varying the number of swirl in the two channels 4.5 a detached or wall-mounted combustion chamber flow can be represented, so that on location and formation of the rotary vortex W can be influenced.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
- Spray-Type Burners (AREA)
Abstract
Description
- Fig. 1
- einen Halbschnitt eines vorderen Brennkammerabschnittes mit Brenner,
- Fig. 2a
- im Halbschnitt den Strömungszustand in der Brennkammer und in der Zerstäuberdüse mit abgelöster Strömung
- Fig. 2b
- im Halbschnitt den Strömungszustand in der Brennkammer und in der Zerstäuberdüse mit wandanlieger Strömung.
Claims (5)
- Brenner für Brennkammern (2) von Gasturbinen mit einer Zerstäuberdüse (3) zum Zerstäuben von Brennstoff in der Verbrennungsluft, die einen primären und einen sekundären Strömungskanal (4,5) stromaufwärts des Brennraumes (11) der Brennkammer (2) durchströmt, wobei der Brennstoff auf eine Wandung in der Zerstäuberdüse (3) gespritzt wird und die in den Brennraum (11) mündenden Strömungskanäle (4,5) von einem bezüglich der Brennerachse A konzentrisch angeordneten, ersten Bauteil (6) mit einer hülsenförmigen, zylindrisch oder konisch verjüngend verlaufenden Zerstäuberlippe (8) getrennt werden und der äußere, sekundäre Strömungskanal (5) von einem konzentrisch angeordneten ringförmigen zweiten Bauteil (7) mit konvergent-divergent verlaufender Innenwandung (14) nach radial außen begrenzt wird, dadurch gekennzeichnet, daß das zweite Bauteil (7) in der Zerstäuberdüse (3) einen Ort (Q) mit engstem Strömungsquerschnitt ausbildet, auf dessen axialer Höhe oder stromaufwärts hiervon das radial innen angeordnete erste Bauteil (6) mit der Zerstäuberlippe (8) endet und die Luftströmung (L) die Strömungskanäle (4,5) mit einem gleichsinnigen Drall durchströmt.
- Brenner nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Bauteile (6,7) bezüglich der Brennerachse (A) konzentrisch angeordnet sind und zwischen sich den ringförmigen, sekundären Strömungskanal (5) ausbilden.
- Brenner nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in den Strömungskanälen (4,5) jeweils vor ihren Austrittsabschnitten (A) Drallvorrichtungen (12) angeordnet sind.
- Brenner nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Strömungskanäle (4,5) so ausgebildet sind, daß das Massenstromverhältnis der primären und sekundären Luftströmung größer als 0,4 ist.
- Brenner nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,, daß der Brenner (1) eine Einspritzdüse (15) aufweist, über welche in den primären Strömungskanal (4) auf die Innenwandung (14) des ersten Bauteils (6) Brennstoff stromaufwärts der Zerstäuberliuppe (8) eingespritzt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19627760 | 1996-07-10 | ||
DE19627760A DE19627760C2 (de) | 1996-07-10 | 1996-07-10 | Brenner mit Zerstäuberdüse |
PCT/EP1997/003595 WO1998001706A1 (de) | 1996-07-10 | 1997-07-08 | Brenner mit zerstäuberdüse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0910776A1 EP0910776A1 (de) | 1999-04-28 |
EP0910776B1 true EP0910776B1 (de) | 2001-08-22 |
Family
ID=7799420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97936627A Expired - Lifetime EP0910776B1 (de) | 1996-07-10 | 1997-07-08 | Brenner mit zerstäuberdüse |
Country Status (5)
Country | Link |
---|---|
US (1) | US6244051B1 (de) |
EP (1) | EP0910776B1 (de) |
DE (2) | DE19627760C2 (de) |
ES (1) | ES2162683T3 (de) |
WO (1) | WO1998001706A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1340940A1 (de) | 2002-02-21 | 2003-09-03 | J. Eberspächer GmbH & Co. KG | Zerstäuberdüse für einen Brenner, insbesondere für ein an einem Fahrzeug einsetzbares Heizgerät |
EP1342950A2 (de) | 2002-02-11 | 2003-09-10 | J. Eberspächer GmbH & Co. KG | Zerstäuberdüse für einen Brenner |
DE10211590B4 (de) * | 2002-03-15 | 2007-11-08 | J. Eberspächer GmbH & Co. KG | Zerstäuberdüse, insbesondere für ein Fahrzeugheizgerät |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19803879C1 (de) * | 1998-01-31 | 1999-08-26 | Mtu Muenchen Gmbh | Zweistoffbrenner |
KR100375051B1 (ko) * | 2000-01-25 | 2003-03-08 | (주) 젠터닷컴 | 실시간 홈쇼핑 구매시스템 및 방법과 그 프로그램 소스를 저장한 기록매체 |
DE102004002246A1 (de) * | 2004-01-15 | 2005-08-11 | J. Eberspächer GmbH & Co. KG | Vorrichtung zur Erzeugung eines Luft/Kohlenwasserstoff-Gemischs |
DE102005022772A1 (de) * | 2005-05-12 | 2007-01-11 | Universität Karlsruhe | Brenner mit Teilvormischung und -vorverdampfung des flüssigen Brennstoffs |
FR2903170B1 (fr) * | 2006-06-29 | 2011-12-23 | Snecma | Dispositif d'injection d'un melange d'air et de carburant, chambre de combustion et turbomachine munies d'un tel dispositif |
GB2444737B (en) * | 2006-12-13 | 2009-03-04 | Siemens Ag | Improvements in or relating to burners for a gas turbine engine |
US20130067923A1 (en) * | 2011-09-20 | 2013-03-21 | General Electric Company | Combustor and method for conditioning flow through a combustor |
US9423137B2 (en) * | 2011-12-29 | 2016-08-23 | Rolls-Royce Corporation | Fuel injector with first and second converging fuel-air passages |
EP3098514A1 (de) * | 2015-05-29 | 2016-11-30 | Siemens Aktiengesellschaft | Brennkammer |
FR3057648B1 (fr) * | 2016-10-18 | 2021-06-11 | Safran Helicopter Engines | Systeme d'injection pauvre de chambre de combustion de turbomachine |
EP4202305A1 (de) * | 2021-12-21 | 2023-06-28 | General Electric Company | Brennstoffdüse und verwirbler |
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 |
DE102022002113A1 (de) | 2022-06-13 | 2023-12-14 | Mercedes-Benz Group AG | Brenner für ein Kraftfahrzeug, Verfahren zum Betreiben eines solchen Brenners sowie Kraftfahrzeug |
US12007115B1 (en) | 2023-02-28 | 2024-06-11 | Rtx Corporation | High shear swirler for gas turbine engine |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1099959A (en) * | 1965-10-28 | 1968-01-17 | Janos Miklos Beer | Improvements in or relating to burners for pulverised coal or like solid fuel or for liquid or gaseous fuel |
US4180974A (en) * | 1977-10-31 | 1980-01-01 | General Electric Company | Combustor dome sleeve |
IN155686B (de) * | 1981-02-27 | 1985-02-23 | Westinghouse Electric Corp | |
GB2150277B (en) * | 1983-11-26 | 1987-01-28 | Rolls Royce | Combustion apparatus for a gas turbine engine |
US5285631A (en) * | 1990-02-05 | 1994-02-15 | General Electric Company | Low NOx emission in gas turbine system |
DE4220060C2 (de) * | 1992-06-19 | 1996-10-17 | Mtu Muenchen Gmbh | Einrichtung zur Betätigung einer den Durchsatz von Verbrennungsluft steuernden Dralleinrichtung eines Brenners für Gasturbinentriebwerke |
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 |
GB9326367D0 (en) * | 1993-12-23 | 1994-02-23 | Rolls Royce Plc | Fuel injection apparatus |
DE4444961A1 (de) * | 1994-12-16 | 1996-06-20 | Mtu Muenchen Gmbh | Einrichtung zur Kühlung insbesondere der Rückwand des Flammrohrs einer Brennkammer für Gasturbinentriebwerke |
US5623827A (en) * | 1995-01-26 | 1997-04-29 | General Electric Company | Regenerative cooled dome assembly for a gas turbine engine combustor |
US5836163A (en) * | 1996-11-13 | 1998-11-17 | Solar Turbines Incorporated | Liquid pilot fuel injection method and apparatus for a gas turbine engine dual fuel injector |
-
1996
- 1996-07-10 DE DE19627760A patent/DE19627760C2/de not_active Expired - Fee Related
-
1997
- 1997-07-08 WO PCT/EP1997/003595 patent/WO1998001706A1/de active IP Right Grant
- 1997-07-08 ES ES97936627T patent/ES2162683T3/es not_active Expired - Lifetime
- 1997-07-08 US US09/214,833 patent/US6244051B1/en not_active Expired - Lifetime
- 1997-07-08 DE DE59704382T patent/DE59704382D1/de not_active Expired - Lifetime
- 1997-07-08 EP EP97936627A patent/EP0910776B1/de not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1342950A2 (de) | 2002-02-11 | 2003-09-10 | J. Eberspächer GmbH & Co. KG | Zerstäuberdüse für einen Brenner |
US6883730B2 (en) | 2002-02-11 | 2005-04-26 | J. Eberspächer GmbH & Co. KG | Atomizing nozzle for a burner |
DE10205573B4 (de) * | 2002-02-11 | 2005-10-06 | J. Eberspächer GmbH & Co. KG | Zerstäuberdüse für einen Brenner |
EP1340940A1 (de) | 2002-02-21 | 2003-09-03 | J. Eberspächer GmbH & Co. KG | Zerstäuberdüse für einen Brenner, insbesondere für ein an einem Fahrzeug einsetzbares Heizgerät |
US6764302B2 (en) | 2002-02-21 | 2004-07-20 | J. Eberspacher Gmbh & Co. Kg | Atomizing nozzle for a burner, especially for a heater that can be used on a vehicle |
DE10207311B4 (de) * | 2002-02-21 | 2005-06-09 | J. Eberspächer GmbH & Co. KG | Zerstäuberdüse für einen Brenner, insbesondere für ein an einem Fahrzeug einsetzbares Heizgerät |
DE10211590B4 (de) * | 2002-03-15 | 2007-11-08 | J. Eberspächer GmbH & Co. KG | Zerstäuberdüse, insbesondere für ein Fahrzeugheizgerät |
Also Published As
Publication number | Publication date |
---|---|
DE59704382D1 (de) | 2001-09-27 |
ES2162683T3 (es) | 2002-01-01 |
WO1998001706A1 (de) | 1998-01-15 |
DE19627760C2 (de) | 2001-05-03 |
DE19627760A1 (de) | 1998-01-15 |
US6244051B1 (en) | 2001-06-12 |
EP0910776A1 (de) | 1999-04-28 |
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