EP0718550B1 - Einspritzdüse - Google Patents
Einspritzdüse Download PDFInfo
- Publication number
- EP0718550B1 EP0718550B1 EP95810745A EP95810745A EP0718550B1 EP 0718550 B1 EP0718550 B1 EP 0718550B1 EP 95810745 A EP95810745 A EP 95810745A EP 95810745 A EP95810745 A EP 95810745A EP 0718550 B1 EP0718550 B1 EP 0718550B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injection nozzle
- fuel
- passage
- gaseous media
- nozzle according
- 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
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/40—Mixing tubes or chambers; Burner heads
- F23D11/402—Mixing chambers downstream of the nozzle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/07002—Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners
Definitions
- the invention relates to an injection nozzle for injecting Fuels in compressed gaseous media, the Injector essentially from a fuel line and there is a channel branching off the fuel line, the fuel line being substantially vertical extends longitudinally to the direction of injection of the fuel, and the channel, which is in the injection direction of the Fuel extends essentially by two Distribution plates are formed, and being a fuel through openings in the fuel line and the channel atomizing edges located downstream of the injection direction the distribution plates can be fed.
- Such injection nozzles are known from EP-A1-0 433 790. They are used there for premix burners, the so-called Double cone burner conical from several bowls are built up.
- the injectors make the Use a medium calorific gas as a fuel Early ignition of the mixture and allow stabilization of the mixing process. Liquid fuel is fed into a the nozzle of the premix burner in the combustion chamber injected. The atomizing power of this However, nozzles are generally insufficient.
- one good mixing of combustion air and fuel before Ignition is usually not achieved because of atomized fuel does not come into contact with all combustion air is coming. This results in more fluid use
- the invention has for its object in an injection nozzle of the type mentioned at the beginning manage to mix the liquid fuel with the Combustion air to improve the ignition beforehand and thereby reducing exhaust emissions.
- the injector is simple and robust. It can be operated with a low fuel pressure because the momentum of the air flow is used to atomize.
- the Fuel is distributed along the air inlet slots. Thereby creates a uniform and good mixture with the Combustion air before ignition. This results in one low pollutant emissions.
- a coated plenum which usually that of a compressor, not shown conveyed combustion air and a combustion chamber 60 feeds. It can be a single combustion chamber or trade an annular combustion chamber.
- the combustion chamber with a combustion chamber wall 63 is encased and by a front plate 54 is limited, a dome 55 is placed.
- a burner 10 is arranged such that the burner outlet 18 is at least approximately flush with the front plate 54 the dome wall, perforated at its outer end, flows through the Combustion air from the plenum 50 into the interior of the cathedral and acts on the burners.
- the fuel becomes the burner supplied via a fuel lance 20 which the dome and penetrates the plenum.
- the schematically shown premix burner 10 is concerned a so-called double-cone burner, such as that used for example known from the aforementioned EP-A1-0 433 790 is.
- a so-called double-cone burner such as that used for example known from the aforementioned EP-A1-0 433 790 is.
- it consists in essentially of two hollow, conical partial bodies 11, 12, which are nested in the direction of flow.
- the respective central axes 13, 14 of the two Partial body offset from each other.
- the neighboring walls of the two partial bodies form tangential lines in their longitudinal extent Slots 19 for the combustion air on this Way into the interior of the burner.
- the burner is powered by liquid fuel operated.
- injection nozzles 1 running along these slots.
- the injector extends essentially over the full length of the tangential slot 19 (Fig. 1).
- the Exit plane of the fuel from the injector 1 is Usually located in the area where the highest combustion air speeds prevail, in the embodiment shown in the middle of the tangential slot 19.
- the injection nozzles 1 are aerodynamic, drop-shaped on the outside designed to control the flow of combustion air so to disturb as little as possible.
- the injection nozzle 1 consists of a Fuel line 2, which has a slot 6 along its length. From the slot 6 branches off a channel 7, which up to one Atomizing edge 5 leads.
- the liquid fuel is from the fuel lance 20 via feed lines, not shown the fuel line 2 of the injector 1 out.
- By the fuel line 2 becomes the fuel through the slots 6 passed to distribution plates 3, which form the channel 7.
- the arrangement and size of these distribution plates 3 can be adjusted by spacers 8. this happens by including the flow of combustion air through the tangential slots 19 and the respective burner 10th be adjusted. In extreme cases, the distribution plate 3 extend over the entire length of the injector 1.
- Rhombus-shaped distribution pins are on the distribution plate 4 arranged.
- the thickness of the fuel film so produced is determined by the gap width t of the channel 7 of the injection nozzle 1 determined at the atomizing edge 5.
- the liquid fuel can therefore introduced into the injection nozzle with relatively low pressure become. Due to the gap width t and thus the thickness the fuel film can be the size of the fuel droplets can be discontinued after atomization.
- the gap width t becomes less than half a millimeter chosen to optimal mixing between fuel and To reach combustion air.
- the invention is not as shown and described embodiment limited.
- the shape and The number of distribution pins is essentially arbitrary, the only decisive factor is the regular distribution of the fuel.
- the extension of the injection nozzles in the tangential The slot and location of the spacers must allow air flow through the tangential slot.
- the burner can also use gaseous fuel operate. For this purpose are then in the area of the tangential Slots in the walls of the two partial bodies in Gas inlet openings distributed in the longitudinal direction in the form of nozzles intended. This begins in such a gas operation Mixture formation with the combustion air also in the zone the tangential entry slots.
- FIG. 5 shows a conventional burner with swirl body 30, consisting essentially of a tube 32, a plurality of deflecting bodies 31 with a wing profile and a fuel lance 34 arranged in the middle.
- the injection nozzles 1 described above can of course also be installed in the swirl body 30 between the deflection bodies 31. This ensures that the fuel and combustion air are optimally mixed prior to ignition.
- the number of injection nozzles 1 can of course differ from FIG. 6 as desired and be adapted to the respective circumstances.
- the injection nozzles 1 can be supplied with fuel directly from the fuel lance 34 via lines, not shown. 7 there is the possibility of integrating the injection nozzle directly into the deflection body 31a.
- This integrated nozzle la is functionally identical to the injection nozzle 1.
- the fuel line 2a is simply adapted to the spatial conditions in the deflection body 31a.
- the fuel supply can of course also take place here through the fuel lance 34.
- the shape and number of the distribution pins is essentially arbitrary.
- the injectors can also be in other arrangements be used. Sufficiently high energies are essential gaseous media into which the liquid working fluid is injected becomes. So the injector can be used in any type of premix burner come into use.
Description
- Fig. 1
- einen Teillängsschnitt einer Brennkammer;
- Fig. 2
- einen Querschnitt durch einen Vormischbrenner der Doppelkegel-Bauart im Bereich seines Austritts;
- Fig. 3
- einen Teillängsschnitt durch eine Einspritzdüse;
- Fig. 4
- einen Querschnitt durch eine Einspritzdüse;
- Fig. 5
- einen Querschnitt durch einen Drallkörper;
- Fig. 6
- eine Draufsicht auf einen Drallkörper entgegen der Strömungsrichtung;
- Fig. 7
- eine teilweise Abwicklung des Drallkörpers.
Nach Fig. 6 können die oben beschriebenen Einspritzdüsen 1 selbstverständlich auch in den Drallkörper 30 zwischen den Umlenkkörpern 31 eingebaut werden. Dadurch wird eine optimale Vermischung zwischen Brennstoff und Verbrennungsluft vorgängig der Zündung erreicht. Die Anzahl der Einspritzdüsen 1 kann dabei natürlich von der Fig. 6 beliebig abweichen und den jeweiligen Gegebenheiten angepasst werden. Die Versorgung der Einspritzdüsen 1 mit Brennstoff kann direkt von der Brennstofflanze 34 über nicht dargestellten Leitungen erfolgen. Gemäss Fig. 7 besteht die Möglichkeit, die Einspritzdüse direkt in den Umlenkkörper 31a zu integrieren. Diese integrierte Düse la ist dabei funktionell gleich aufgebaut wie die Einspritzdüse 1. So wird beispielsweise die Brennstoffleitung 2a einfach den räumlichen Gegebenheiten im Umlenkkörper 31a angepasst. Die Brennstoffversorgung kann hier natürlich auch durch die Brennstofflanze 34 erfolgen. Selbstverständlich ist auch hier die Form und Anzahl der Verteilungsstifte im wesentlichen beliebig.
- 1
- Einspritzdüse
- 1a
- Einspritzdüse im Umlenkkörper
- 2
- Brennstoffleitung
- 2a
- Brennstoffleitung in Umlenkkörper
- 3
- Verteilungsplatte
- 4
- Verteilungsstifte
- 5
- Zerstäubungskante
- 6
- Schlitz
- 7
- Kanal
- 8
- Zwischenstück
- 10
- Doppelkegelbrenner
- 11
- Teilkörper
- 12
- Teilkörper
- 13
- Mittelachse
- 14
- Mittelachse
- 18
- Brenneraustritt
- 19
- tangentialer Schlitz
- 20
- Brennstofflanze
- 21
- Rückstromkalotte
- 30
- Drallkörper
- 31
- Umlenkkörper
- 31a
- Umlenkkörper mit Einspritzdüse
- 32
- Rohr
- 34
- Brennstoflanze
- 50
- Plenum
- 54
- Frontplatte
- 55
- Dom
- 60
- Brennkammer
- 63
- Brennkammerwand
- t
- Spaltbreite Einspritzdüse
Claims (7)
- Einspritzdüse zur Eindüsung von Brennstoffen in komprimierte gasförmige Medien, wobei die Einspritzdüse (1) wesentlich aus einer Brennstoffleitung (2) und einem von der Brennstoffleitung abzweigenden Kanal (7) besteht, wobei sich die Brennstoffleitung (2) im wesentlichen senkrecht zur Eindüsungsrichtung des Brennstoffes längsförmig ausdehnt, und der Kanal (7), welcher sich in der Eindüsungsrichtung des Brennstoffes erstreckt, im wesentlichen durch zwei Verteilungsplatten (3) gebildet ist, und wobei ein Brennstoff durch Öffnungen (6) in der Brennstoffleitung (2) und den Kanal (7) zu stromab der Eindüsungsrichtung gelegenen Zerstäubungskanten (5) der Verteilungsplatten (3) zuleitbar ist
dadurch gekennzeichnet, dass die Öffnungen (6) der Brennstoffleitung (2) schlitzförmig sind, und, dass zwischen den Verteilungsplatten (3) Verteilungsstifte (4) angeordnet sind. - Einspritzdüse nach Anspruch 1, dadurch gekennzeichnet, dass
im Kanal (7) mindestens ein Zwischenstück (8) angeordnet ist, wodurch mehrere Verteilungsplatten (3) gebildet werden. - Einspritzdüse nach Anspruch 1, dadurch gekennzeichnet, dass
die Einspritzdüse (1) auf der Aussenseite aerodynamisch ausgestaltet ist. - Einspritzdüse nach Anspruch 1, dadurch gekennzeichnet, dass
die Spaltbreite (t) des Kanals (7) bei der Zerstäubungskante (5) höchstens einen halben Millimeter beträgt. - Verwendung einer Einspritzdüse nach Anspruch 1 in einem Vormischbrenner der Doppelkegelbauweise, dadurch gekennzeichnet, dass
die Einspritzdüse (1) in den tangentialen Lufteintrittschlitzen (19) des Vormischbrenners der Doppelkegelbauart angeordnet ist. - Verwendung einer Einspritzdüse nach Anspruch 1 mit einem von komprimierten gasförmigen Medien durchströmten Drallkörper (30), dadurch gekennzeichnet, dass in dem von komprimierten gasförmigen Medien durchströmten Drallkörper (30) mindestens eine Einspritzdüse (1) zwischen zwei benachbarten Umlenkkörpern (31), angeordnet ist.
- Verwendung einer Einspritzdüse nach Anspruch 1 mit einem von komprimierten gasförmigen Medien durchströmten Drallkörper (30), dadurch gekennzeichnet, dass mindestens innerhalb eines Umlenkkörpers (31) des von komprimierten gasförmigen Medien durchströmten Drallkörpers(30) eine Einspritzdüse (la) angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4445279A DE4445279A1 (de) | 1994-12-19 | 1994-12-19 | Einspritzdüse |
DE4445279 | 1994-12-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0718550A1 EP0718550A1 (de) | 1996-06-26 |
EP0718550B1 true EP0718550B1 (de) | 2000-03-01 |
Family
ID=6536262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95810745A Expired - Lifetime EP0718550B1 (de) | 1994-12-19 | 1995-11-29 | Einspritzdüse |
Country Status (5)
Country | Link |
---|---|
US (1) | US5588824A (de) |
EP (1) | EP0718550B1 (de) |
JP (1) | JPH08226620A (de) |
CN (1) | CN1133419A (de) |
DE (2) | DE4445279A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2314923A2 (de) | 2009-10-23 | 2011-04-27 | MAN Diesel & Turbo SE | Drallerzeuger |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE244380T1 (de) * | 1997-11-21 | 2003-07-15 | Alstom | Brenner für den betrieb eines wärmeerzeugers |
US6176087B1 (en) * | 1997-12-15 | 2001-01-23 | United Technologies Corporation | Bluff body premixing fuel injector and method for premixing fuel and air |
EP0981019A1 (de) * | 1998-08-20 | 2000-02-23 | Asea Brown Boveri AG | Verfahren sowie Brenner zur Verbrennung von flüssigen Brennstoffen |
US6883332B2 (en) * | 1999-05-07 | 2005-04-26 | Parker-Hannifin Corporation | Fuel nozzle for turbine combustion engines having aerodynamic turning vanes |
US6460344B1 (en) | 1999-05-07 | 2002-10-08 | Parker-Hannifin Corporation | Fuel atomization method for turbine combustion engines having aerodynamic turning vanes |
GB2368386A (en) * | 2000-10-23 | 2002-05-01 | Alstom Power Nv | Gas turbine engine combustion system |
FR2824625B1 (fr) * | 2001-05-10 | 2003-08-15 | Inst Francais Du Petrole | Dispositif et procede d'injection d'un combustible liquide dans un flux d'air pour une chambre de combustion |
EP1528316B1 (de) * | 2002-08-09 | 2017-10-04 | JFE Steel Corporation | Verbrennungsregler für röhrenförmigen flammenbrenner und verfahren für verbrennungskontrolle |
DE102005015152A1 (de) * | 2005-03-31 | 2006-10-05 | Alstom Technology Ltd. | Vormischbrenner für eine Gasturbinenbrennkammer |
ATE480737T1 (de) * | 2005-06-17 | 2010-09-15 | Alstom Technology Ltd | Brenner zur vormischartigen verbrennung |
EP1843098A1 (de) * | 2006-04-07 | 2007-10-10 | Siemens Aktiengesellschaft | Gasturbinenverbrennungskammer |
US8408896B2 (en) * | 2007-07-25 | 2013-04-02 | Lummus Technology Inc. | Method, system and apparatus for firing control |
US9364840B2 (en) | 2010-11-16 | 2016-06-14 | Nisshin Seifun Group Inc. | Powder distribution device |
EP3056819B1 (de) * | 2015-02-11 | 2020-04-01 | Ansaldo Energia Switzerland AG | Kraftstoffeinspritzungsvorrichtung für eine Gasturbine |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464791A (en) * | 1943-11-05 | 1949-03-22 | Claude A Bonvillian | Apparatus for the combustion of fuel |
GB1048968A (en) * | 1964-05-08 | 1966-11-23 | Rolls Royce | Combustion chamber for a gas turbine engine |
DE1751929C3 (de) * | 1968-08-20 | 1975-08-28 | Joseph Lucas (Industries) Ltd., Birmingham (Grossbritannien) | Zerstäuberdüse zur Aufbereitung von flüssigem Brennstoff für Gasturbinen |
US4269583A (en) * | 1978-05-22 | 1981-05-26 | Combustion Unlimited Incorporated | Pilots for flare stacks |
DE3836912A1 (de) * | 1988-09-01 | 1990-03-15 | Mtu Muenchen Gmbh | Verfahren zur brennstoffzufuehrung |
CH680467A5 (de) * | 1989-12-22 | 1992-08-31 | Asea Brown Boveri | |
CH682952A5 (de) * | 1991-03-12 | 1993-12-15 | Asea Brown Boveri | Brenner für eine Vormischverbrennung eines flüssigen und/oder gasförmigen Brennstoffes. |
EP0518072A1 (de) * | 1991-06-14 | 1992-12-16 | Asea Brown Boveri Ag | Brenner zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder einer Feuerungsanlage |
DE4330083A1 (de) * | 1993-09-06 | 1995-03-09 | Abb Research Ltd | Verfahren zum Betrieb eines Vormischbrenners |
-
1994
- 1994-12-19 DE DE4445279A patent/DE4445279A1/de not_active Withdrawn
-
1995
- 1995-11-02 US US08/552,121 patent/US5588824A/en not_active Expired - Fee Related
- 1995-11-29 DE DE59507901T patent/DE59507901D1/de not_active Expired - Fee Related
- 1995-11-29 EP EP95810745A patent/EP0718550B1/de not_active Expired - Lifetime
- 1995-12-12 CN CN95119883A patent/CN1133419A/zh active Pending
- 1995-12-14 JP JP7325858A patent/JPH08226620A/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2314923A2 (de) | 2009-10-23 | 2011-04-27 | MAN Diesel & Turbo SE | Drallerzeuger |
DE102009045950A1 (de) | 2009-10-23 | 2011-04-28 | Man Diesel & Turbo Se | Drallerzeuger |
Also Published As
Publication number | Publication date |
---|---|
US5588824A (en) | 1996-12-31 |
DE4445279A1 (de) | 1996-06-20 |
EP0718550A1 (de) | 1996-06-26 |
JPH08226620A (ja) | 1996-09-03 |
DE59507901D1 (de) | 2000-04-06 |
CN1133419A (zh) | 1996-10-16 |
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