EP0718550B1 - Injection nozzle - Google Patents

Injection nozzle Download PDF

Info

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
Application number
EP95810745A
Other languages
German (de)
French (fr)
Other versions
EP0718550A1 (en
Inventor
Robin T.D. Mcmillan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB AG Germany
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP0718550A1 publication Critical patent/EP0718550A1/en
Application granted granted Critical
Publication of EP0718550B1 publication Critical patent/EP0718550B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D11/00Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36Details, e.g. burner cooling means, noise reduction means
    • F23D11/40Mixing tubes or chambers; Burner heads
    • F23D11/402Mixing chambers downstream of the nozzle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00Combustion apparatus characterised by arrangements for air supply
    • F23C7/002Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/07002Premix 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Einspritzdüse zur Eindüsung von Brennstoffen in komprimierte gasförmige Medien, wobei die Einspritzdüse wesentlich aus einer Brennstoffleitung und einem von der Brennstoffleitung abzweigenden Kanal besteht, wobei sich die Brennstoffleitung im wesentlichen senkrecht zur Eindüsungsrichtung des Brennstoffes längsförmig ausdehnt, und der Kanal, welcher sich in der Eindüsungsrichtung des Brennstoffes erstreckt, im wesentlichen durch zwei Verteilungsplatten gebildet ist, und wobei ein Brennstoff durch Öffnungen in der Brennstoffleitung und den Kanal zu stromab der Eindüsungsrichtung gelegenen Zerstäubungskanten der Verteilungsplatten zuleitbar ist.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.

Stand der TechnikState of the art

Derartige Einspritzdüsen sind aus EP-A1-0 433 790 bekannt. Sie werden dort bei Vormischbrennern verwendet, die als sogenannte Doppelkegelbrenner kegelförmig aus mehreren Schalen aufgebaut sind. Die Einspritzdüsen verunmöglichen bei der Verwendung eines mittelkalorischen Gases als Brennstoff ein Frühzündung des Gemisches und ermöglichen eine Stabilisierung des Mischvorganges. Flüssiger Brennstoff wird über eine in der Spitze des Vormischbrenners angeordnete Düse in den Verbrennungsraum eingespritzt. Die Zerstäubungsleistung dieser Düsen ist im allgemeinen jedoch ungenügend. Zudem kann eine gute Vermischung von Verbrennungsluft und Brennstoff vor der Zündung dadurch üblicherweise nicht erreicht werden, da der zerstäubte Brennstoff nicht in Kontakt mit der gesamten Verbrennungsluft kommt. Dies führt bei der Verwendung flüssiger Brennstoffe zu relativ hohen Abgasemissionen, im speziellen zu hohen Stickoxydemission. Zur Senkung der Stickoxydemission ist die Einspritzung von demineralisiertem Wasser in den Brennraum nötig.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. In addition, 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 Fuels with relatively high exhaust emissions, in particular too high nitrogen oxide emissions. To reduce nitrogen oxide emissions is the injection of demineralized water into the Combustion chamber necessary.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, bei einer Einspritzdüse der eingangs genannten Art eine Möglichkeit zu schaffen, um die Vermischung von flüssigem Brennstoff mit der Verbrennungsluft vorgängig der Zündung zu verbessern und damit die Abgasemissionen zu senken.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.

Erfindungsgemäss wird dies dadurch erreicht, dass die Öffnungen der Brennstoffleitung schlitzförmig sind, und, dass zwischen den Verteilungsplatten Verteilungsstifte angeordnet sind.According to the invention this is achieved in that the Fuel line openings are slit-shaped, and that arranged between the distribution plates distribution pins are.

Die Vorteile der Erfindung sind unter anderem darin zu sehen, dass die Einspritzdüse einfach und robust konstruiert ist. Es kann mit einem geringen Brennstoffdruck gearbeitet werden, da zur Zerstäubung der Impuls des Luftstromes verwendet wird.The advantages of the invention include that 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.

Bei der Verwendung der Einspritzdüse in einem Vormischbrenner, beispielsweise in einem Doppelkegelbrenner, wird der Brennstoff entlang der Lufteintrittschlitze verteilt. Dadurch entsteht eine gleichmässige und gute Vermischung mit der Verbrennungsluft vor der Zündung. Daraus resultiert eine geringe Schadstoffemission.When using the injector in a premix burner, for example in a double cone burner, 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.

Kurze Beschreibung der ZeichnungBrief description of the drawing

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung anhand eines Vormischbrenners der Doppelkegelbauart schematisch dargestellt.In the drawing is an embodiment of the invention schematically using a premix burner of the double-cone design shown.

Es zeigen:

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.
Show it:
Fig. 1
a partial longitudinal section of a combustion chamber;
Fig. 2
a cross section through a premix burner of the double cone type in the region of its outlet;
Fig. 3
a partial longitudinal section through an injection nozzle;
Fig. 4
a cross section through an injection nozzle;
Fig. 5
a cross section through a swirl body;
Fig. 6
a plan view of a swirl body against the flow direction;
Fig. 7
a partial development of the swirl body.

Es sind nur die für das Verständnis der Erfindung wesentlichen Elemente gezeigt. Nicht dargestellt sind beispielsweise die Zu- und Anordnung des Brenners in der Brennkammer, die Brennstoffbereitstellung, die Regeleinrichtungen und dergleichen. Die Strömungsrichtung der Arbeitsmittel ist mit Pfeilen bezeichnet. It is only essential for understanding the invention Elements shown. For example, are not shown the allocation and arrangement of the burner in the combustion chamber, the Fuel supply, the control devices and the like. The direction of flow of the work equipment is with arrows designated.

Weg zur Ausführung der ErfindungWay of carrying out the invention

In Fig. 1 ist mit 50 ein ummanteltes Plenum bezeichnet, welches in der Regel die von einem nicht dargestellten Verdichter geförderte Verbrennungsluft aufnimmt und einer Brennkammer 60 zuführt. Es kann sich dabei um eine Einzelbrennkammer oder eine Ringbrennkammer handeln.In Fig. 1, 50 is 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.

Am Kopfende der Brennkammer, deren Brennraum mit einer Brennkammerwand 63 ummantelt ist und durch eine Frontplatte 54 begrenzt ist, ist ein Dom 55 aufgesetzt. In diesem Dom ist ein Brenner 10 so angeordnet, dass der Brenneraustritt 18 zumindest annähernd bündig ist mit der Frontplatte 54. Über die an ihrem äusseren Ende gelochte Domwandung strömt die Verbrennungsluft aus dem Plenum 50 in das Dominnere und beaufschlagt die Brenner. Der Brennstoff wird dem Brenner über eine Brennstofflanze 20 zugeführt, welche die Dom- und die Plenumwand durchdringt.At the head of the 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. In this cathedral is 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.

Beim schematisch dargestellten Vormischbrenner 10 handelt es sich um einen sogenannten Doppelkegelbrenner, wie er beispielsweise aus der eingangs genannten EP-A1-0 433 790 bekannt ist. Wie auch aus Fig. 2 ersichtlich, besteht er im wesentlichen aus zwei hohlen, kegelförmigen Teilkörpern 11, 12, die in Strömungsrichtung ineinandergeschachtelt sind. Dabei sind die jeweiligen Mittelachsen 13, 14 der beiden Teilkörper gegeneinander versetzt. Die benachbarten Wandungen der beiden Teilkörper bilden in deren Längserstreckung tangentiale Schlitze 19 für die Verbrennungsluft, die auf diese Weise in das Brennerinnere gelangt.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. As can also be seen from Fig. 2, 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.

Der Brenner wird im Beispielsfall mit flüssigem Brennstoff betrieben. Hierzu sind im Bereich der tangentialen Schlitze 19 entlang dieser Schlitze verlaufende Einspritzdüsen 1 angeordnet. Die Einspritzdüse reicht im wesentlichen über die ganze Länge des tangentialen Schlitzes 19 (Fig. 1). Die Austrittsebene des Brennstoffes aus der Einspritzdüse 1 ist üblicherweise im Bereich angeordnet, wo die höchsten Verbrennungsluftgeschwindigkeiten vorherrschen, im gezeigten Ausführungsbeispiel in der Mitte des tangentialen Schlitzes 19. Weiter sind die Einspritzdüsen 1 aussen aerodynamisch, tropfenförmig ausgestaltet, um den Fluss der Verbrennungsluft so wenig wie möglich zu stören.In the example, the burner is powered by liquid fuel operated. For this purpose, in the area of the tangential slots 19 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. Furthermore, 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.

Nach Fig. 3 und Fig. 4 besteht die Einspritzdüse 1 aus einer Brennstoffleitung 2, die über ihre Länge einen Schlitz 6 aufweist. Vom Schlitz 6 zweigt ein Kanal 7 ab, der bis zu einer Zerstäubungskante 5 führt. Der flüssige Brennstoff wird von der Brennstofflanze 20 über nicht dargestellte Zuleitungen zu der Brennstoffleitung 2 der Einspritzdüse 1 geführt. Durch die Brennstoffleitung 2 wird der Brennstoff über die Schlitze 6 zu Verteilungsplatten 3 geleitet, die den Kanal 7 bilden. Die Anordnung und Grösse dieser Verteilungsplatten 3 kann durch Zwischenstücke 8 eingestellt werden. Dies geschieht durch Einbeziehung des Flusses der Verbrennungsluft durch die tangentialen Schlitze 19 und muss dem jeweiligen Brenner 10 angepasst werden. Im Extremfall kann sich die Verteilungsplatte 3 über die ganze Länge der Einspritzdüse 1 erstrecken. Auf der Verteilungsplatte sind rhombusförmige Verteilungsstifte 4 angeordnet. Durch die Verteilungsstifte 4 wird in Strömungsrichtung vor der Zerstäubungskante 5 der Brennstoff gleichmässig verteilt. Die Dicke des so erzeugten Brennstoff-Filmes wird durch die Spaltbreite t des Kanals 7 der Einspritzdüse 1 an der Zerstäubungskante 5 bestimmt. Zur Zerstäubung wird der Impuls der mit hohem Druck einströmenden Verbrennungsluft verwendet. Der flüssige Brennstoff kann deshalb mit relativ geringem Druck in die Einspritzdüse eingebracht werden. Durch die Spaltbreite t und damit der Dicke des Brennstoff-Filmes kann die Grösse der Brennstoff-Tröpfchen nach der Zerstäubung eingestellt werden. Ueblicherweise wird die Spaltbreite t kleiner als ein halber Millimeter gewählt, um eine optimale Vermischung zwischen Brennstoff und Verbrennungsluft zu erreichen.According to FIGS. 3 and 4, 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 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. Through the distribution pins 4 is in Flow direction in front of the atomizing edge 5 of the fuel equally distributed. 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. For atomization becomes the impulse of the inflowing with high pressure Combustion air used. 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. Usually the gap width t becomes less than half a millimeter chosen to optimal mixing between fuel and To reach combustion air.

Am Brenneraustritt 18 des Brenners 10 stellt sich eine möglichst homogene Brennstoffkonzentration über dem beaufschlagten kreisringförmigen Querschnitt ein. Es entsteht am Brenneraustritt eine definierte kalottenförmige Rezirkulationszone 21, an deren Spitze die Zündung erfolgt. Die Flamme selbst wird durch die Rezirkulationszone vor dem Brenner stabilisiert, ohne einen mechanischen Flammenhalter zu benötigen.At the burner outlet 18 of the burner 10 there is one if possible homogeneous fuel concentration over the acted upon circular cross-section. It arises at the burner outlet a defined dome-shaped recirculation zone 21, at the tip of which the ignition takes place. The flame itself is stabilized by the recirculation zone in front of the burner, without a mechanical flame holder need.

Selbstverständlich ist die Erfindung nicht auf das gezeigte und beschriebene Ausführungsbeispiel beschränkt. Die Form und Anzahl der Verteilungsstifte ist im wesentlichen beliebig, entscheidend ist nur die regelmässige Verteilung des Brennstoffes. Die Erstreckung der Einspritzdüsen im tangentialen Schlitz und die Lage der Zwischenstücke muss dem Luftfluss durch den tangentialen Schlitz angepasst werden.Of course, 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.

Der Brenner kann auch zusätzlich mit gasförmigem Brennstoff betrieben werden. Hierzu sind dann im Bereich der tangentialen Schlitze in den Wandungen der beiden Teilkörper in Längsrichtung verteilte Gaseinströmöffnungen in Form von Düsen vorgesehen. In einem solchen Gasbetrieb beginnt die Gemischbildung mit der Verbrennungsluft ebenfalls in der Zone der tangentialen Eintrittsschlitze.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 zeigt einen herkömmlichen Brenner mit Drallkörper 30, im wesentlichen bestehend aus einem Rohr 32, mehreren Umlenkkörpern 31 mit Flügelprofil und einer in der Mitte angeordneten Brennstofflanze 34.
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.
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.
According to FIG. 6, 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. For example, 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. Of course, the shape and number of the distribution pins is essentially arbitrary.

Die Einspritzdüsen können auch noch in anderen Anordnungen verwendet werden. Wesentlich sind genügend hohe Energien der gasförmigen Medien, in die das flüssige Arbeitsmittel eingedüst wird. So kann die Einspritzdüse in jeder Art von Vormischbrenner zur Anwendung kommen. 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.

BezugszeichenlisteReference list

11
EinspritzdüseInjector
1a1a
Einspritzdüse im UmlenkkörperInjection nozzle in the deflector
22nd
BrennstoffleitungFuel line
2a2a
Brennstoffleitung in UmlenkkörperFuel line in the deflector
33rd
VerteilungsplatteDistribution plate
44th
VerteilungsstifteDistribution pins
55
ZerstäubungskanteAtomizing edge
66
Schlitzslot
77
Kanalchannel
88th
ZwischenstückSpacer
1010th
DoppelkegelbrennerDouble cone burner
1111
TeilkörperPartial body
1212th
TeilkörperPartial body
1313
MittelachseCentral axis
1414
MittelachseCentral axis
1818th
BrenneraustrittBurner outlet
1919th
tangentialer Schlitztangential slot
2020th
BrennstofflanzeFuel lance
2121
RückstromkalotteBack flow dome
3030th
DrallkörperSwirl body
3131
UmlenkkörperDeflector
31a31a
Umlenkkörper mit EinspritzdüseDeflection body with injection nozzle
3232
Rohrpipe
3434
BrennstoflanzeFuel lance
5050
Plenumplenum
5454
FrontplatteFront panel
5555
DomCathedral
6060
BrennkammerCombustion chamber
6363
BrennkammerwandCombustion chamber wall
tt
Spaltbreite EinspritzdüseInjector gap width

Claims (7)

  1. Injection nozzle for introducing fuels into compressed gaseous media, the injection nozzle (1) consisting essentially of a fuel conduit (2) and a passage (7) branching off from the fuel conduit, the fuel conduit (2) extending lengthwise essentially at right angles to the direction of introduction of the fuel and the passage (7), which extends in the direction of introduction of the fuel, essentially being formed by two distribution panels (3), and a fuel being able to be fed through openings (6) in the fuel conduit (2) and through the passage (7) to atomization edges (5), situated downstream of the direction of introduction, of the distribution panels (3), characterized in that the openings (6) in the fuel conduit (2) are slot-shaped, and in that distribution pins (4) are arranged between the distribution panels (3).
  2. Injection nozzle according to Claim 1, characterized in that at least one intermediate piece (8) is arranged in the passage (7), a plurality of distribution panels (3) being formed by this means.
  3. Injection nozzle according to Claim 1, characterized in that the injection nozzle (1) is of aerodynamic design on the outside.
  4. Injection nozzle according to Claim 1, characterized in that the gap width (t) of the passage (7) is at most half a millimetre at the atomization edge (5).
  5. Use of an injection nozzle according to Claim 1 in a premixing burner of the double-cone type, characterized in that the injection nozzle (1) is arranged in the tangential air inlet slots (19) of the premixing burner of the double-cone type.
  6. Use of an injection nozzle according to Claim 1 having a swirl body (30) through which compressed gaseous media flow, characterized in that at least one injection nozzle (1) is arranged between two adjacent deflection bodies (31) in the swirl body (30) through which'compressed gaseous media flow.
  7. Use of an injection nozzle according to Claim 1 having a swirl body (30) through which compressed gaseous media flow, characterized in that an injection nozzle (la) is arranged within at least one deflection body (31) of the swirl body (30) through which compressed gaseous media flow.
EP95810745A 1994-12-19 1995-11-29 Injection nozzle Expired - Lifetime EP0718550B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445279A DE4445279A1 (en) 1994-12-19 1994-12-19 Injector
DE4445279 1994-12-19

Publications (2)

Publication Number Publication Date
EP0718550A1 EP0718550A1 (en) 1996-06-26
EP0718550B1 true EP0718550B1 (en) 2000-03-01

Family

ID=6536262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810745A Expired - Lifetime EP0718550B1 (en) 1994-12-19 1995-11-29 Injection nozzle

Country Status (5)

Country Link
US (1) US5588824A (en)
EP (1) EP0718550B1 (en)
JP (1) JPH08226620A (en)
CN (1) CN1133419A (en)
DE (2) DE4445279A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2314923A2 (en) 2009-10-23 2011-04-27 MAN Diesel & Turbo SE Swirler

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0918191B1 (en) * 1997-11-21 2003-07-02 Alstom Burner for the operation of a heat generator
US6176087B1 (en) * 1997-12-15 2001-01-23 United Technologies Corporation Bluff body premixing fuel injector and method for premixing fuel and air
EP0981019A1 (en) * 1998-08-20 2000-02-23 Asea Brown Boveri AG Method and burner for combustion of liquid fuels
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 (en) * 2001-05-10 2003-08-15 Inst Francais Du Petrole DEVICE AND METHOD FOR INJECTING A LIQUID FUEL INTO AN AIRFLOW FOR A COMBUSTION CHAMBER
US7654819B2 (en) * 2002-08-09 2010-02-02 Jfe Steel Corporation Tubular flame burner and method for controlling combustion
DE102005015152A1 (en) 2005-03-31 2006-10-05 Alstom Technology Ltd. Premix burner for a gas turbine combustor
ES2352679T3 (en) * 2005-06-17 2011-02-22 Alstom Technology Ltd PREMIXING COMBUSTION BURNER.
EP1843098A1 (en) * 2006-04-07 2007-10-10 Siemens Aktiengesellschaft Gas turbine combustor
US8408896B2 (en) * 2007-07-25 2013-04-02 Lummus Technology Inc. Method, system and apparatus for firing control
CN103201202B (en) * 2010-11-16 2016-04-20 日清制粉集团本社股份有限公司 Powder distribution device
EP3056819B1 (en) * 2015-02-11 2020-04-01 Ansaldo Energia Switzerland AG Fuel injection device for a gas turbine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
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 (en) * 1968-08-20 1975-08-28 Joseph Lucas (Industries) Ltd., Birmingham (Grossbritannien) Atomizer nozzle for processing liquid fuel for gas turbines
US4269583A (en) * 1978-05-22 1981-05-26 Combustion Unlimited Incorporated Pilots for flare stacks
DE3836912A1 (en) * 1988-09-01 1990-03-15 Mtu Muenchen Gmbh METHOD FOR FUEL SUPPLY
CH680467A5 (en) * 1989-12-22 1992-08-31 Asea Brown Boveri
CH682952A5 (en) * 1991-03-12 1993-12-15 Asea Brown Boveri Burner for a premixing combustion of a liquid and / or gaseous fuel.
EP0518072A1 (en) * 1991-06-14 1992-12-16 Asea Brown Boveri Ag Burner for an internal combustion engine, a combustion chamber of a gas turbine plant or a furnace
DE4330083A1 (en) * 1993-09-06 1995-03-09 Abb Research Ltd Method of operating a premix burner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2314923A2 (en) 2009-10-23 2011-04-27 MAN Diesel & Turbo SE Swirler
DE102009045950A1 (en) 2009-10-23 2011-04-28 Man Diesel & Turbo Se swirl generator

Also Published As

Publication number Publication date
US5588824A (en) 1996-12-31
JPH08226620A (en) 1996-09-03
CN1133419A (en) 1996-10-16
DE59507901D1 (en) 2000-04-06
EP0718550A1 (en) 1996-06-26
DE4445279A1 (en) 1996-06-20

Similar Documents

Publication Publication Date Title
EP1802915B1 (en) Gas turbine burner
EP0794383B1 (en) Method of operating a pressurised atomising nozzle
DE19536837B4 (en) Apparatus and method for injecting fuels into compressed gaseous media
DE4446945B4 (en) Gas powered premix burner
EP0276696B1 (en) Hybrid burner for premix operation with gas and/or oil, particularly for gas turbine plants
EP0503319B1 (en) Burner for a premixing combustion of a liquid and/or a gaseous fuel
EP0902233B1 (en) Combined pressurised atomising nozzle
EP0718550B1 (en) Injection nozzle
EP0433790B1 (en) Burner
EP1864056B1 (en) Premix burner for a gas turbine combustion chamber
DE69116837T2 (en) Liquid burner
EP0719983B1 (en) Method and device for feeding gaseous fuel to a premix burner
EP0777081B1 (en) Premix burner
EP1828684A1 (en) Premix burner comprising a mixing section
EP0592717A1 (en) Gas-operated premix burner
EP1356236B1 (en) Premix burner and method for operating such a premix burner
DE19545310A1 (en) Pre-mixing burner for mixing fuel and combustion air before ignition
EP0394800B1 (en) Premix burner for generating a hot gas
EP0711953B1 (en) Premix burner
EP0742411B1 (en) Air supply for a premix combustor
EP0908671A1 (en) Combustion process for gaseous, liquid fuels and fuels having medium or low calorific value in a burner
EP0911582B1 (en) Method for operating a premix burner and premix burner
DE4412315B4 (en) Method and device for operating the combustion chamber of a gas turbine
EP0714001A2 (en) Combustion chamber with premix burners
EP0777082A2 (en) Premix burner

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ASEA BROWN BOVERI AG

17P Request for examination filed

Effective date: 19961125

17Q First examination report despatched

Effective date: 19980706

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 59507901

Country of ref document: DE

Date of ref document: 20000406

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000516

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ABB ALSTOM POWER (SCHWEIZ) AG

ET Fr: translation filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20011012

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20011031

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20011106

Year of fee payment: 7

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030603

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST