EP3143335A1 - Burner for a combustion machine and combustion machine - Google Patents

Burner for a combustion machine and combustion machine

Info

Publication number
EP3143335A1
EP3143335A1 EP15744537.0A EP15744537A EP3143335A1 EP 3143335 A1 EP3143335 A1 EP 3143335A1 EP 15744537 A EP15744537 A EP 15744537A EP 3143335 A1 EP3143335 A1 EP 3143335A1
Authority
EP
European Patent Office
Prior art keywords
burner
adapter
cover plate
air
flow channel
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.)
Granted
Application number
EP15744537.0A
Other languages
German (de)
French (fr)
Other versions
EP3143335B1 (en
Inventor
Jens Kleinfeld
Christian Beck
Andreas Böttcher
Christopher Grandt
Thomas Hauser
Tobias Krieger
Stefan Reich
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP3143335A1 publication Critical patent/EP3143335A1/en
Application granted granted Critical
Publication of EP3143335B1 publication Critical patent/EP3143335B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F23R3/34—Feeding into different combustion zones
    • F23R3/343—Pilot flames, i.e. fuel nozzles or injectors using only a very small proportion of the total fuel to insure continuous combustion
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts
    • 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
    • F23R3/283—Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2214/00—Cooling
    • 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
    • F23D2900/00008—Burner assemblies with diffusion and premix modes, i.e. dual mode burners

Definitions

  • the invention relates to a burner for a Verbrennungsma ⁇ machine and an internal combustion engine.
  • the internal combustion engine is in particular a gas turbine in the megawatt power range, preferably for a power plant for
  • the internal combustion engine typically comprises a plurality of burners, for example, in a ring arrangement and a compressor upstream of the burners and a turbine connected downstream of the burners.
  • each of the burners comprises a combustion region which is arranged in the interior of a combustion chamber of the internal combustion engine.
  • Each of the internal spaces is a part of a combustion chamber corresponding to the interior of the combustion chamber in Wesent ⁇ union.
  • This combustion chamber is designed, for example, annular, that is, as an annular combustion chamber, along which the burners are arranged.
  • a suitable fuel / air mixture is first injected and then burned.
  • the fuel is, for example, natural gas.
  • nozzles are typically provided which run parallel to one another and in which the fuel / air mixture is respectively formed before it is injected into the combustion chamber, that is to say in particular the combustion region.
  • the nozzles are often annular angeord ⁇ net, sometimes along several concentric rings.
  • the nozzles each have a nozzle outlet which opens into the combustion chamber.
  • the nozzles close to the nozzle outlet ⁇ lässen are connected to a nozzle carrier, which also constitutes the upstream end of the combustor and in particular ⁇ sondere the combustion chamber from another on the side of Düsenarris lying nozzle chamber separates.
  • the nozzle carrier thus also serves as a cover plate.
  • the burner is designed for use in an internal combustion engine, in particular gas turbine in the megawatt power range ⁇ forms and includes a pilot burner, which extends in the axial direction, a nozzle chamber and a combustion area. Furthermore, the burner comprises a cover plate, which is arranged between the nozzle chamber and the focal region and which has an inlet opening. In addition, an adapter is required. arranges, for guiding air from the nozzle chamber along a predetermined flow path in the direction of the combustion region.
  • an embodiment of the burner in lightweight ⁇ example allows, since is dispensed through the adapter to a massive nozzle carrier, whereby the burner is also inexpensive to manufacture.
  • the burner is particularly easy to assemble, in particular it is advantageously possible borrowed to mount the components of the burner through the combustion chamber of the internal combustion engine.
  • Another advantage is in particular that by means of the adapter at least a portion of the air is particularly efficient fed to the pilot burner as combustion air.
  • the deck plate advantageously prevented that smoke and / or fumes from Brennbe get ⁇ rich in the nozzle chamber. This is achieved in particular by the air flowing along the flow path into the combustion region. In other words, although a fluidic connection exists between the nozzle chamber and the combustion region, the penetration of exhaust gases into the nozzle chamber is prevented, in particular, by the fact that air flows from the nozzle chamber into the combustion region.
  • the internal combustion engine has a general flow direction which points from the compressor in the direction of the burner in the direction of the turbine.
  • the terms used in the following upstream and downstream are to be understood in particular with respect to this general flow direction.
  • the pilot burner extends along a longitudinal axis and is in particular arranged centrally in the burner.
  • the pilot ⁇ burner is used to supply a fuel, in particular oil into the combustion area.
  • a number of nozzles are arranged, each extending parallel to the longitudinal axis, that is to say also in the axial direction.
  • the nozzles are arranged in the nozzle chamber and each have downstream of a nozzle outlet, which corresponds to a respectively introduced into the cover plate recess. With others Words: the nozzles each lead into the focal area.
  • the nozzles are arranged in particular on a number of rings, the center of each of which lies on the longitudinal axis.
  • Each ring of nozzles is also called a stage.
  • the rings preferably concentrically angeord ⁇ net are.
  • the nozzles are designed in particular for receiving air from the nozzle chamber, that is to say they have a suitable nozzle inlet into which, in particular, in each case a burner lance for supplying fuel protrudes.
  • the provided in SI ⁇ senraum air is in particular compressed air, which is led from an upstream compressor to the burner of the combustion engine into the nozzle chamber.
  • the nozzle chamber thus serves in particular as a reservoir for compressed air.
  • the nozzle chamber is fluidically connected to the combustion region, whereby a supply of the pilot burner with air as combustion air is made possible.
  • the adapter is used in particular for appropriate guidance of the air, that is the special ⁇ an air flow along a suitable Strö ⁇ tion path.
  • the air has a flow direction, which is oriented generally from the nozzle chamber in the direction of the combustion region.
  • the flow direction does not generally correspond to the axial direction, but may change along the flow path.
  • the adapter allows a deflection of the air in a particularly suitable manner.
  • a flow channel is formed between the adapter and the cover plate, whereby a suitable flow path is realized in a particularly simple manner.
  • the flow channel is therefore limited by the adapter and the cover plate, that is, the adapter and the cover plate each form a boundary of the flow channel.
  • the flow channel is a flow space that extends around the inlet opening in such a way that the Air at a predetermined position in the flow space in each case flows substantially in the direction of the inlet opening.
  • the adapter For cooling the cover plate by means of the air, the adapter has a radially extending, annular portion, which forms a radial portion of the Strö ⁇ mungskanals with the cover plate.
  • the radial portion of the Strömungska ⁇ nals is also referred to as a radial section.
  • the annular Ab ⁇ cut of the adapter and the cover plate include an annular flow space through which the air flows substantially in the radial direction and in the direction of the diagonal section.
  • the running in the axial direction due-sen form in the flow channel in particular in each case a interrup ⁇ monitoring.
  • the nozzles each have an end portion which is disposed in the flow chamber, that is, in radial section and is advantageous ⁇ bathed by the flowing air therein. This makes it possible in particular, in addition to the cover plate and the nozzle ends, that is to cool the end portions of the nozzle by means of the air.
  • the adapter is formed in particular in the manner of a bell ⁇ , wherein the head portion forms an upper bell portion and the diagonal portion forms a lower part of the bell, to which in turn connects the radial portion.
  • the three sections are either formed in one piece or the radial section and the bell are separate, miteinan ⁇ the connected parts.
  • the air flowing out of the nozzle chamber is then drawn in via the outer edge of the radial section and flows along the nozzle-chamber-side wall of the cover plate into the lower part of the bell.
  • the cover plate is cooled by means of the air. In the lower part of the bell, the air flows along the axial cone and, in particular, also cools it.
  • the flow direction on the diagonal section is substantially opposite to the gen ⁇ rellen flow direction in the internal combustion engine. Then the air flows into the head area and gets there diverted in such a way that the flow direction of the air in ⁇ We sentlichen the general direction of flow corresponds.
  • the air is guided along the downstream end of the Pi ⁇ lot burner and finally provided in the combustion area as combustion air for the pilot burner. The air thus flows generally from outside to inside along the inner wall of the adapter.
  • the adapter in a preferred embodiment, a head portion into which projects the pilot burner.
  • the head area encloses the downstream end of the pilot burner and in particular also the outlet opening.
  • annular channel is expediently formed between the pilot burner and the head region.
  • this air is particularly even ⁇ introduced .
  • the inlet opening is circular.
  • a portion of the cover plate is formed as axial cone, the inlet opening is disposed at the upstream-lying end.
  • the axial cone is arranged in the center of the cover plate and widens in the opposite direction to the pilot burner, that is, downstream. The axial cone thus insbeson ⁇ particular forming a cone-shaped extension of the combustion chamber in the direction of the burner.
  • the axial cone is referred to here insbeson ⁇ particular as Axialgitterkegel and is used correspondingly for improved guiding or introduction of the fuel / air mixture towards the combustion chamber.
  • the adapter has a diagonally extending portion which extends at a distance from the axial cone and thereby forms a cone-shaped Ab ⁇ section of the flow channel.
  • the cone-shaped portion is also referred to as a diagonal section.
  • Axialverwirbler arranged for improved mixing of supplied by means of the annular channel air and fuel supplied by the Pi ⁇ lot burner.
  • the Axialverwirbler extends at least partially at the end of Pi ⁇ lotbrenners and into the annular channel into it.
  • Axialverwirbler is expediently surrounded or surrounded by a collar, which is in particular formed on the axial cone.
  • the Axialverwirbler is disposed within the collar and the outer side of the collar forms in combination with the adapter an advantageous extension of the diagonal portion of the flow channel.
  • the flow channel is expediently designed as an annular space.
  • annular space is understood in particular to mean that the flow channel is a space enclosed by suitable sidewalls, which has an extension in at least one direction transverse to the flow direction which is comparable to the length of the flow channel in the flow direction of the air.
  • flow channels which are introduced into a solid part by means of bores, can be as
  • Ring space formed flow channel make particularly material Spa ⁇ rend and is also lighter in terms of its weight.
  • the contact Surface between air and elements to be cooled, here in particular the cover plate advantageously increases.
  • the latter preferably has an air inlet lying in the radial direction.
  • Characterized in particular an air flow from the outside ⁇ SEN is formed inwardly and cooled a particularly large portion of the cover plate by means of the air flowing past it.
  • the air inlet is in particular annular and is then also referred to as a ring inlet. This has a radius which is in particular greater than the radial distances of the nozzles to the longitudinal axis of the burner. The air is thus sucked in from the outside of the nozzle area with respect to the nozzles. Due to the outer layer of the air inlet also a particularly large flow cross-section is achieved ⁇ bar.
  • an annular gap is formed in the radial direction between the pilot burner and the adapter, into which a sealing ring is inserted.
  • the ⁇ ser serves, in particular, an inflow of air from the nozzle chamber through the gap, i.e., the pilot burner over to avoid, in the area enclosed by the head portion of the adapter head interior or at least reduce.
  • the sealing ring is fastened to one of the two parts, namely to the pilot burner or to the adapter, and is displaceable relative to the other of these two parts.
  • the sealing ring is thus either attached to the pilot burner and displaceable relative to the adapter or attached to the adapter and displaceable relative to the pilot burner. Due to the typically present in the operating thermal see loading of the different parts of the burner results in a thermal expansion, which may also differ in size for different parts or is directed in different directions ⁇ Liche.
  • the displaceability of the Sealing piston then allows in particular an avoidance of tension of the pilot burner against the adapter and possibly resulting damage.
  • the sealing ring has at least one web which extends in the axial direction and rotates the sealing ring, wherein the web forms a sealing ⁇ surface which ana on the adapter.
  • the sealing ring thus has an approximately H-shaped cross-section and is therefore particularly economical to produce, at the same time suitable sealing effect.
  • the adapter has at least one from ⁇ spacers on the anabut on the cover plate.
  • the spacer is attached to the diagonal portion of the adapter and abuts the axial cone, whereby in ⁇ special at the same time a suitable spacing in radia ⁇ ler and in the axial direction takes place.
  • the mounting of the burner is simplified by the spacer in such a way that during assembly automatically takes place a suitable spacing and alignment, in particular centering of the cover plate, the adapter and the pilot burner.
  • the spacer is formed as a deformation of the adapter.
  • a suitable spacer can be produced in a particularly simple manner.
  • the spacer as dimples, nub or cam is formed and represents an elevation or depression along the surface of the adapter.
  • insbesonde ⁇ re to improve the spacing in the assembly and for improved centering with respect to the longitudinal axis of the burner ners.
  • these are insbesonde re evenly distributed in the direction of rotation of the adapter.
  • the adapter and the cover plate are each made of sheets, that is, with a low material thickness, where can be produced by the burner in an advantageous lightweight construction.
  • the material thickness is in particular about 1-4 mm in the case of both the adapter and the cover plate.
  • FIG. 1 shows a burner in a longitudinal sectional view, with a nozzle chamber and with an adapter
  • FIG. 2 shows a detail of the nozzle chamber according to FIG. 1 and an alternative adapter
  • FIG. 3 shows a detail of the arrangement according to FIG. 1,
  • FIG. 4 shows a detail of the arrangement according to FIG. 1 with an alternative sealing ring
  • FIG 5 shows the adapter according to FIG 2 in a perspective view.
  • a burner 2 is shown schematically, in a sectional view taken along a longitudinal axis L of the burner 2.
  • a longitudinal axis L that is, in the axial direction A he stretches a pilot burner 4, to promote a fuel in a combustion region 6, the downstream of the pilot burner 4 is arranged.
  • the fuel is via an outlet opening 8 of the pilot burner 4 in the combustion region.
  • the combustion region 6 corresponds to the réelleraun a burner 2 downstream, not illustrated here Darge combustion chamber.
  • a burner chamber 10 Around the pilot burner 4 around a number of nozzles 12 is arranged in a nozzle chamber 10, which also each extend in the axial direction A and parallel to each other.
  • the nozzles 12 are used to provide a combustible fuel / air mixture in the combustion region 6.
  • each SI ⁇ se 12 each have a fuel lance 14 such that it at least partly at the back, that is, at the upstream end of the nozzle 16 in the nozzle 12 protrudes.
  • an annular nozzle inlet is formed exclusively in particular in each case, by means of which air from the nozzle chamber 10 is sucked into the einströmbar or SI ⁇ se 12 in order to be mixed there with the jetted from the respective fuel lance 14 fuel.
  • the existing in the nozzle chamber 10, air is here in particular a burner 2 upstream, not shown here compressor provided and thus ver ⁇ composed air.
  • the fuel is provided upstream of the fuel lances 14 via a number of, here two fuel ring channels 18.
  • the nozzles 12 are arranged along a number of, here two rings and form an inner and an outer stage in FIG.
  • the nozzle chamber 10 is separated from the combustion region 6, that is to say from the combustion chamber by means of a cover plate 20.
  • This extends essentially in the radial direction R and has a number of recesses, which are each assigned to a nozzle outlet 22 of a nozzle 12, for admitting the fuel / air mixture formed in the nozzles 12 into the combustion area 6.
  • the cover plate 20 has an axial cone 24 which is widened in the flow direction S.
  • the axial cone ⁇ an inlet opening 26 which is in the here ge Service ⁇ th embodiment arranged downstream of the outlet opening 8 of the Pi ⁇ lotbrenners. 4
  • an adapter 28 is arranged, the one surrounding the end of the pilot burner 4 head portion 30, extending from this downstream and widening diagonal section 32 has.
  • the adapter 28 is formed in the manner of a bell, wherein the head portion 30 is an upper part of the bell and the diagonal portion 32 is a frusto-conical, lower part.
  • From the downstream end of the diagonal section 22 from a ra ⁇ dialer portion 34 extends in the radial direction R.
  • the diagonal and the radial portion 32, 34 are each in a ge ⁇ suitable distance AI, A2 relative to the Axialkegels 24 Bezie ⁇ hung as the cover plate 20 is arranged, for example about 2-5mm.
  • the adapter 28 is made in one piece, but alternatively a multi-part design is possible, as shown in FIG.
  • the cover plate 20 and the adapter 28 form a gap which serves as a flow channel 36 to flow air from the nozzle ⁇ chamber 10 in the combustion region 6 and thereby cool the cover plate 20.
  • the flow channel 36 thereto comprises a plurality of sections 38, 40, 42, namely a radial From ⁇ cut 38 to the top plate 20 along, as Radialab ⁇ cut 38 denotes a diagonal portion 40 on Axi ⁇ alkegel 24 along, as a diagonal section 40 and an annular channel 42, in the head region 30 between the adapter 28 and the pilot burner 4.
  • the air inlet 44 is an annular inlet, which is also referred to as a ring inlet. This revolves around the radial portion 34 of the adapter 28, as shown particularly clearly in FIG.
  • Air inlet 44 is inserted into the flow channel 36 and then follows the radial section 38 from the outside inwards to the diagonal section 40. This is followed by a deflection along of the axial cone 24 in the interior of the head portion 30. There, the air is again deflected in the direction of the inlet opening 26. Between inlet and outlet opening 26, 8 is in the embodiment shown here in addition to a
  • Axialverwirbler 50 arranged, in which the air is introduced before mixing with the fuel from the pilot burner 4.
  • the Axialverwirbler 50 is surrounded by a collar 52 which is attached as an extension on the axial cone 24.
  • a gap 54 is formed between the pilot burner 4 and the upstream end of the adapter 28, in which a sealing ring 56 is inserted. This is fixed in the embodiment shown here ⁇ example on the pilot burner 4 and relative to the adapter 28 slidably.
  • FIG 4 a variant of the sealing ring 56 is shown, with this radially outwardly encircling, axially extending web 58 which forms outwardly a sealing surface 60 which is located on a mating surface 62 of the adapter 28 ⁇ .
  • the adapter 28 has a number of spacers 64 to suitably space the adapter 28 from the cover plate 20 and, when mounting the burner 2, a suitable orientation of the cover plate 20, the adapter 28 and the pilot burner 4 to each other achieve.
  • the adapter 28 shown in FIG 4 is also shown in FIG 5 in a perspective view. Clearly visible are formed as depressions with respect to the outside of the Adap ⁇ age 28 spacers 64, which are each formed in the manner of a dimple, a knob or a cam. The spacers 64 protrude into the flow channel 36 and sit against the cover plate 20. In the embodiment shown here, the spacers 64 are arranged on the diagonal section 32 of the adapter 28 and seat on the outside on the axial cone 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

The invention relates to a burner (2) for a combustion machine, having a pilot burner (4), which extends in the axial direction (A), having a nozzle chamber (10), having a burner region (6) and having a cover plate (20) which is arranged between the nozzle chamber (10) and the burner region (6) and which has an inlet opening (26), wherein an adapter (28) is arranged, in order to guide air out of the nozzle chamber (10) along a specified flow path (P) in the direction of the combustion region (6), wherein a flow channel (36) is formed as part of the flow path (P) between the adapter (28) and the cover plate (20) and the adapter (28) has a radially extending, annular section (34) which, together with the cover plate (20), forms a radial section (38) of the flow channel (36), in order to cool the cover plate (20) by means of the air. The invention further relates to a combustion machine having such a burner (2).

Description

Beschreibung description
Brenner für eine Verbrennungsmaschine und Verbrennungsmaschine Burner for an internal combustion engine and internal combustion engine
Die Erfindung betrifft einen Brenner für eine Verbrennungsma¬ schine sowie eine Verbrennungsmaschine. The invention relates to a burner for a Verbrennungsma ¬ machine and an internal combustion engine.
Die Verbrennungsmaschine ist insbesondere eine Gasturbine im Megawatt-Leistungsbereich, bevorzugt für ein Kraftwerk zurThe internal combustion engine is in particular a gas turbine in the megawatt power range, preferably for a power plant for
Energieerzeugung mit einer Leistung von mehreren hundert Megawatt. Die Verbrennungsmaschine umfasst dabei typischerweise mehrere Brenner, beispielsweise in einer Ringanordnung und einen den Brennern vorgeschalteten Verdichter sowie eine den Brennern nachgeschaltete Turbine. Hierbei umfasst jeder der Brenner einen Brennbereich, der im Innenraum einer Brennkammer der Verbrennungsmaschine angeordnet ist. Dabei ist jeder der Brennbereiche ein Teil eines Brennraumes, der im Wesent¬ lichen dem Innenraum der Brennkammer entspricht. Diese Brenn- kammer ist beispielsweise ringförmig ausgebildet, das heißt als Ringbrennkammer, entlang derer die Brenner angeordnet sind. In die Brennkammer wird ein geeignetes Brennstoff/Luft- Gemisch zunächst eingedüst und anschließend verbrannt. Der Brennstoff ist dabei beispielsweise Erdgas. Energy generation with a capacity of several hundred megawatts. The internal combustion engine typically comprises a plurality of burners, for example, in a ring arrangement and a compressor upstream of the burners and a turbine connected downstream of the burners. In this case, each of the burners comprises a combustion region which is arranged in the interior of a combustion chamber of the internal combustion engine. Each of the internal spaces is a part of a combustion chamber corresponding to the interior of the combustion chamber in Wesent ¬ union. This combustion chamber is designed, for example, annular, that is, as an annular combustion chamber, along which the burners are arranged. In the combustion chamber, a suitable fuel / air mixture is first injected and then burned. The fuel is, for example, natural gas.
Dabei ist es bekannt, die Verbrennungsmaschine mit einer An¬ zahl von sogenannten vorgemischten Strahlflammen zu betreiben. Dazu sind typischerweise mehrere Düsen vorgesehen, die parallel zueinander verlaufen und in denen das Brenn- stoff/Luft-Gemisch jeweils gebildet wird, bevor dieses in die Brennkammer, das heißt insbesondere den Brennbereich eingedüst wird. Die Düsen sind hierbei häufig ringförmig angeord¬ net, zuweilen entlang mehrerer konzentrischer Ringe. Die Düsen weisen jeweils einen Düsenauslass auf, der in die Brenn- kammer mündet. Zusätzlich sind die Düsen nahe den Düsenaus¬ lässen mit einem Düsenträger verbunden, der zugleich das stromauf liegende Ende der Brennkammer darstellt und insbe¬ sondere die Brennkammer von einem auf der anderen Seite des Düsenträgers liegenden Düsenraum trennt. Der Düsenträger dient somit auch als Deckplatte. It is known to operate the internal combustion engine with an on ¬ number of so-called premixed jet flames. For this purpose, a plurality of nozzles are typically provided which run parallel to one another and in which the fuel / air mixture is respectively formed before it is injected into the combustion chamber, that is to say in particular the combustion region. The nozzles are often annular angeord ¬ net, sometimes along several concentric rings. The nozzles each have a nozzle outlet which opens into the combustion chamber. In addition, the nozzles close to the nozzle outlet ¬ lässen are connected to a nozzle carrier, which also constitutes the upstream end of the combustor and in particular ¬ sondere the combustion chamber from another on the side of Düsenträgers lying nozzle chamber separates. The nozzle carrier thus also serves as a cover plate.
Im Zuge einer allgemein angestrebten Leistungssteigerung und einer insbesondere dadurch bedingten Erhöhung der Anzahl an Düsen ergibt sich zum Einen eine Kostensteigerung, insbesondere bei den zum Betrieb der Verbrennungsmaschine verwendeten Hilfssystemen, beispielsweise Kühlsystemen und zum Anderen eine Vergrößerung des Systems, insbesondere des Düsenträgers. Im Fall des Düsenträgers wird zudem durch die typischerweise massive Auslegung desselben die Montage erschwert oder bei bestimmten Verbrennungsmaschinen aufgrund deren Ausgestaltung gänzlich verhindert. Zudem ist eine Kühlung des Düsenträgers in dessen Funktion als Deckplatte bei größerer Leistung zu- nehmend erschwert. In the course of a generally desired performance increase and in particular a consequent increase in the number of nozzles results on the one hand an increase in costs, in particular in the auxiliary systems used for operating the internal combustion engine, for example cooling systems and on the other an enlargement of the system, in particular of the nozzle carrier. In the case of the nozzle carrier, moreover, assembly is made more difficult by the typically massive design of the same or, in the case of certain internal combustion engines, due to their design, is completely prevented. In addition, a cooling of the nozzle carrier in its function as a cover plate with greater power is increasingly difficult.
Daher ist es eine Aufgabe der Erfindung einen Brenner anzugeben, der einerseits kostengünstiger zu fertigen ist und andererseits einfacher zu montieren ist. Desweiteren soll eine Verbrennungsmaschine mit einem solchen Brenner angegeben werden . Therefore, it is an object of the invention to provide a burner that is both cheaper to manufacture on the one hand and on the other hand easier to assemble. Furthermore, an internal combustion engine should be specified with such a burner.
Die Aufgabe wird erfindungsgemäß gelöst durch einen Brenner mit dem Merkmalen des Anspruchs 1 und eine Verbrennungsma- schine mit den Merkmalen des Anspruchs 13. Vorteilhafte Aus¬ gestaltungen, Weiterbildungen und Varianten sind Gegenstand der Unteransprüche. Dabei gelten die im Zusammenhang mit dem Brenner genannten Weiterbildungen und Vorteile sinngemäß auch für die Verbrennungsmaschine. The object is achieved by a burner with the features of claim 1 and a combustion engine with the features of claim 13. Advantageous Aus ¬ designs, developments and variants are the subject of the dependent claims. The developments and advantages mentioned in connection with the burner also apply correspondingly to the internal combustion engine.
Der Brenner ist zur Verwendung in einer Verbrennungsmaschine, insbesondere Gasturbine im Megawatt-Leistungsbereich ausge¬ bildet und umfasst einen Pilotbrenner, der sich in axialer Richtung erstreckt, einen Düsenraum und einen Brennbereich. Desweiteren umfasst der Brenner eine Deckplatte, die zwischen dem Düsenraum und dem Brennbereich angeordnet ist und die eine Einlassöffnung aufweist. Zusätzlich ist ein Adapter ange- ordnet, zur Führung von Luft aus dem Düsenraum entlang eines vorgegebenen Strömungspfades in Richtung des Brennbereichs. The burner is designed for use in an internal combustion engine, in particular gas turbine in the megawatt power range ¬ forms and includes a pilot burner, which extends in the axial direction, a nozzle chamber and a combustion area. Furthermore, the burner comprises a cover plate, which is arranged between the nozzle chamber and the focal region and which has an inlet opening. In addition, an adapter is required. arranges, for guiding air from the nozzle chamber along a predetermined flow path in the direction of the combustion region.
Die mit der Erfindung erzielten Vorteile bestehen insbesonde- re darin, dass eine Ausgestaltung des Brenners in Leichtbau¬ weise ermöglicht ist, da durch den Adapter auf einen massiven Düsenträger verzichtet wird, wodurch der Brenner zudem kostengünstig zu fertigen ist. Zudem ist der Brenner besonders einfach zu montieren, insbesondere ist es vorteilhaft mög- lieh, die Komponenten des Brenners durch die Brennkammer der Verbrennungsmaschine hindurch zu montieren. Ein weiterer Vorteil ist insbesondere, dass mittels des Adapters zumindest ein Teil der Luft besonders effizient dem Pilotbrenner als Verbrennungsluft zuführbar ist. Zudem verhindert die Deck- platte vorteilhaft, dass Rauch und/oder Abgase vom Brennbe¬ reich in den Düsenraum gelangen. Dies wird insbesondere auch durch die entlang des Strömungspfads in den Brennbereich strömende Luft erzielt. Mit anderen Worten: obwohl zwischen Düsenraum und Brennbereich eine strömungstechnische Verbin- dung existiert, wird ein Eindringen von Abgasen in den Düsenraum insbesondere dadurch verhindert, dass Luft vom Düsenraum in den Brennbereich strömt. The advantages achieved with the invention consist insbesonde- re fact that an embodiment of the burner in lightweight ¬ example allows, since is dispensed through the adapter to a massive nozzle carrier, whereby the burner is also inexpensive to manufacture. In addition, the burner is particularly easy to assemble, in particular it is advantageously possible borrowed to mount the components of the burner through the combustion chamber of the internal combustion engine. Another advantage is in particular that by means of the adapter at least a portion of the air is particularly efficient fed to the pilot burner as combustion air. In addition, the deck plate advantageously prevented that smoke and / or fumes from Brennbe get ¬ rich in the nozzle chamber. This is achieved in particular by the air flowing along the flow path into the combustion region. In other words, although a fluidic connection exists between the nozzle chamber and the combustion region, the penetration of exhaust gases into the nozzle chamber is prevented, in particular, by the fact that air flows from the nozzle chamber into the combustion region.
Die Verbrennungsmaschine weist eine generelle Strömungsrich- tung auf, die vom Verdichter in Richtung Brenner in Richtung Turbine weist. Die im Folgenden verwendeten Begriffe stromauf und stromab sind insbesondere bezüglich dieser generellen Strömungsrichtung zu verstehen. Der Pilotbrenner erstreckt sich entlang einer Längsachse und ist insbesondere zentral im Brenner angeordnet. Der Pilot¬ brenner dient der Zufuhr eines Brennstoffes, insbesondere Öl in den Brennbereich. Um den Pilotbrenner herum sind eine Anzahl von Düsen angeordnet, die sich jeweils parallel zur Längsachse, das heißt auch in axialer Richtung erstrecken. Die Düsen sind im Düsenraum angeordnet und weisen jeweils stromab einen Düsenauslass auf, der einer jeweils in die Deckplatte eingebrachten Ausnehmung entspricht. Mit anderen Worten: die Düsen münden jeweils in den Brennbereich. Die Düsen sind insbesondere auf einer Anzahl von Ringen angeordnet, deren Mittelpunkt jeweils auf der Längsachse liegt. Jeder Ring von Düsen wird auch als Stufe bezeichnet. Im Falle meh- rere Stufen sind die Ringe vorzugsweise konzentrisch angeord¬ net . The internal combustion engine has a general flow direction which points from the compressor in the direction of the burner in the direction of the turbine. The terms used in the following upstream and downstream are to be understood in particular with respect to this general flow direction. The pilot burner extends along a longitudinal axis and is in particular arranged centrally in the burner. The pilot ¬ burner is used to supply a fuel, in particular oil into the combustion area. Around the pilot burner, a number of nozzles are arranged, each extending parallel to the longitudinal axis, that is to say also in the axial direction. The nozzles are arranged in the nozzle chamber and each have downstream of a nozzle outlet, which corresponds to a respectively introduced into the cover plate recess. With others Words: the nozzles each lead into the focal area. The nozzles are arranged in particular on a number of rings, the center of each of which lies on the longitudinal axis. Each ring of nozzles is also called a stage. In the case of sev- eral stages the rings preferably concentrically angeord ¬ net are.
Stromauf sind die Düsen insbesondere zur Aufnahme von Luft aus dem Düsenraum ausgebildet, das heißt weisen einen geeig- neten Düseneinlass auf, in den insbesondere jeweils auch eine Brennerlanze zur Zufuhr von Brennstoff hineinragt. Die im Dü¬ senraum bereitgestellte Luft ist insbesondere verdichtete Luft, die von einem dem Brenner vorgeschalteten Verdichter der Verbrennungsmaschine in den Düsenraum geleitet wird. Der Düsenraum dient somit insbesondere als Reservoir für verdichtete Luft. Upstream, the nozzles are designed in particular for receiving air from the nozzle chamber, that is to say they have a suitable nozzle inlet into which, in particular, in each case a burner lance for supplying fuel protrudes. The provided in SI ¬ senraum air is in particular compressed air, which is led from an upstream compressor to the burner of the combustion engine into the nozzle chamber. The nozzle chamber thus serves in particular as a reservoir for compressed air.
Der Düsenraum ist mit dem Brennbereich strömungstechnisch verbunden, wodurch eine Versorgung des Pilotbrenners mit Luft als Verbrennungsluft ermöglicht ist. Der Adapter dient dabei insbesondere zur geeigneten Führung der Luft, das heißt ins¬ besondere eines Luftstroms entlang eines geeigneten Strö¬ mungspfades. Die Luft weist dabei eine Strömungsrichtung auf, die allgemein vom Düsenraum aus in Richtung des Brennberei- ches orientiert ist. Dabei entspricht die Strömungsrichtung nicht generell der axialen Richtung, sondern kann sich entlang des Strömungspfades ändern. Dazu ermöglicht der Adapter eine Umlenkung der Luft in besonders geeigneter Weise. Gemäß der Erfindung ist zwischen dem Adapter und der Deckplatte ein Strömungskanal gebildet, wodurch auf besonders einfache Weise ein geeigneter Strömungspfad realisiert ist. Der Strömungskanal ist demnach durch den Adapter und die Deckplatte begrenzt, das heißt der Adapter und die Deckplatte bilden jeweils eine Begrenzung des Strömungskanals aus. Dabei ist der Strömungskanal insbesondere ein Strömungsraum, der sich derart um die Einlassöffnung herum erstreckt, dass die Luft an einer vorgegebenen Position im Strömungsraum jeweils im Wesentlichen in Richtung der Einlassöffnung strömt. The nozzle chamber is fluidically connected to the combustion region, whereby a supply of the pilot burner with air as combustion air is made possible. The adapter is used in particular for appropriate guidance of the air, that is the special ¬ an air flow along a suitable Strö ¬ tion path. In this case, the air has a flow direction, which is oriented generally from the nozzle chamber in the direction of the combustion region. The flow direction does not generally correspond to the axial direction, but may change along the flow path. For this purpose, the adapter allows a deflection of the air in a particularly suitable manner. According to the invention, a flow channel is formed between the adapter and the cover plate, whereby a suitable flow path is realized in a particularly simple manner. The flow channel is therefore limited by the adapter and the cover plate, that is, the adapter and the cover plate each form a boundary of the flow channel. In particular, the flow channel is a flow space that extends around the inlet opening in such a way that the Air at a predetermined position in the flow space in each case flows substantially in the direction of the inlet opening.
Zur Kühlung der Deckplatte mittels der Luft weist der Adapter einen sich radial erstreckenden, ringförmigen Abschnitt auf, der mit der Deckplatte einen radialen Abschnitt des Strö¬ mungskanals ausbildet. Der radiale Abschnitt des Strömungska¬ nals wird auch als Radialabschnitt bezeichnet. Mittels dessen ist insbesondere eine besonders effektive Kühlung der Deck- platte ermöglicht. Insbesondere schließen der ringförmige Ab¬ schnitt des Adapters und die Deckplatte einen ringförmigen Strömungsraum ein, durch den die Luft im Wesentlichen in radialer Richtung und in Richtung des Diagonalabschnitts strömt. Dabei bilden die in axialer Richtung verlaufenden Dü- sen im Strömungskanal insbesondere jeweils eine Unterbre¬ chung. Mit anderen Worten: die Düsen weisen jeweils einen Endabschnitt auf, der im Strömungsraum, das heißt im Radial¬ abschnitt angeordnet ist und dadurch vorteilhaft von der dort strömenden Luft umspült wird. Dadurch ist es insbesondere möglich, zusätzlich zur Deckplatte auch die Düsenenden, das heißt die Endabschnitte der Düsen mittels der Luft zu kühlen. For cooling the cover plate by means of the air, the adapter has a radially extending, annular portion, which forms a radial portion of the Strö ¬ mungskanals with the cover plate. The radial portion of the Strömungska ¬ nals is also referred to as a radial section. By means of this, especially a particularly effective cooling of the cover plate is made possible. In particular, the annular Ab ¬ cut of the adapter and the cover plate include an annular flow space through which the air flows substantially in the radial direction and in the direction of the diagonal section. Here, the running in the axial direction due-sen form in the flow channel in particular in each case a interrup ¬ monitoring. In other words, the nozzles each have an end portion which is disposed in the flow chamber, that is, in radial section and is advantageous ¬ bathed by the flowing air therein. This makes it possible in particular, in addition to the cover plate and the nozzle ends, that is to cool the end portions of the nozzle by means of the air.
Der Adapter ist insbesondere nach Art einer Glocke ausge¬ formt, wobei der Kopfbereich einen oberen Glockenteil bildet und der diagonale Abschnitt einen unteren Teil der Glocke, an den sich wiederum der radiale Abschnitt anschließt. Dabei sind die drei Abschnitte entweder einstückig ausgebildet oder der radiale Abschnitt und die Glocke sind separate, miteinan¬ der verbundene Teile. Die aus dem Düsenraum strömende Luft wird dann über den äußeren Rand des radialen Abschnittes angesaugt und strömt an der düsenraumseitigen Wand der Deckplatte entlang in den unteren Teil der Glocke ein. Dabei wird die Deckplatte mittels der Luft gekühlt. Im unteren Teil der Glocke strömt die Luft am Axialkegel entlang und kühlt insbe- sondere auch diesen. Die Strömungsrichtung auf dem Diagonalabschnitt ist dabei im Wesentlichen entgegengesetzt der gene¬ rellen Strömungsrichtung in der Verbrennungsmaschine. Anschließend strömt die Luft in den Kopfbereich und wird dort derart umgelenkt, dass die Strömungsrichtung der Luft im We¬ sentlichen der generellen Strömungsrichtung entspricht. Die Luft wird dabei entlang des stromab liegenden Endes des Pi¬ lotbrenners geführt und schließlich im Brennbereich als Ver- brennungsluft für den Pilotbrenner bereitgestellt. Die Luft strömt also allgemein von außen nach innen an der Innenwand des Adapters entlang. The adapter is formed in particular in the manner of a bell ¬ , wherein the head portion forms an upper bell portion and the diagonal portion forms a lower part of the bell, to which in turn connects the radial portion. The three sections are either formed in one piece or the radial section and the bell are separate, miteinan ¬ the connected parts. The air flowing out of the nozzle chamber is then drawn in via the outer edge of the radial section and flows along the nozzle-chamber-side wall of the cover plate into the lower part of the bell. The cover plate is cooled by means of the air. In the lower part of the bell, the air flows along the axial cone and, in particular, also cools it. The flow direction on the diagonal section is substantially opposite to the gen ¬ rellen flow direction in the internal combustion engine. Then the air flows into the head area and gets there diverted in such a way that the flow direction of the air in ¬ We sentlichen the general direction of flow corresponds. The air is guided along the downstream end of the Pi ¬ lot burner and finally provided in the combustion area as combustion air for the pilot burner. The air thus flows generally from outside to inside along the inner wall of the adapter.
Insbesondere zur verbesserten Zufuhr der Luft als Verbren- nungsluft für den Pilotbrenner weist der Adapter in einer bevorzugten Ausgestaltung einen Kopfbereich auf, in den der Pilotbrenner hineinragt. Mit anderen Worten: der Kopfbereich umschließt das stromab liegende Ende des Pilotbrenners und insbesondere auch die Auslassöffnung. Dadurch wird im Betrieb eine besonders vorteilhafte Umlenkung der Luft und eine an¬ schließende Vermischung dieser mit Brennstoff erzielt. In particular, for improved supply of air as combustion air for the pilot burner, the adapter in a preferred embodiment, a head portion into which projects the pilot burner. In other words, the head area encloses the downstream end of the pilot burner and in particular also the outlet opening. As a result, a particularly advantageous deflection of the air and an on ¬ closing mixing of these is achieved with fuel during operation.
Zur Zuführung der Luft ist zwischen dem Pilotbrenner und dem Kopfbereich zweckmäßigerweise ein Ringkanal gebildet. Insbe- sondere wird dadurch die Luft besonders gleichmäßig einge¬ bracht. Der Pilotbrenner oder zumindest dessen Ende weist da¬ bei insbesondere eine kreisförmige Umrandung auf; ebenso ist auch die Einlassöffnung kreisförmig. Um insbesondere die Vermischung von Luft und mittels des Pi¬ lotbrenners ausgedüsten Brennstoffes zu verbessern, ist ein Teil der Deckplatte als Axialkegel ausgebildet, an dessen stromauf liegendem Ende die Einlassöffnung angeordnet ist. Insbesondere ist der Axialkegel im Zentrum der Deckplatte an- geordnet und weitet sich in Gegenrichtung zum Pilotbrenner, das heißt stromab auf. Der Axialkegel bildet somit insbeson¬ dere einen kegelmantelförmigen Fortsatz der Brennkammer in Richtung des Brenners. Der Axialkegel wird hierbei insbeson¬ dere auch als Axialgitterkegel bezeichnet und dient entspre- chend zur verbesserten Führung oder Einleitung des Brennstoff/Luft-Gemisches in Richtung der Brennkammer. In einer zweckmäßigen Weiterbildung weist der Adapter einen diagonal verlaufenden Abschnitt auf, der beabstandet von dem Axialkegel verläuft und dadurch einen kegelmantelförmigen Ab¬ schnitt des Strömungskanals ausbildet. Der kegelmantelförmige Abschnitt wird auch als Diagonalabschnitt bezeichnet. For supplying the air, an annular channel is expediently formed between the pilot burner and the head region. In particular, this air is particularly even ¬ introduced . The pilot burner or at least its end, since ¬ on in particular a circular outline; Likewise, the inlet opening is circular. In order in particular to improve the mixing of air and by means of the Pi ¬ lotbrenners jetted fuel, a portion of the cover plate is formed as axial cone, the inlet opening is disposed at the upstream-lying end. In particular, the axial cone is arranged in the center of the cover plate and widens in the opposite direction to the pilot burner, that is, downstream. The axial cone thus insbeson ¬ particular forming a cone-shaped extension of the combustion chamber in the direction of the burner. The axial cone is referred to here insbeson ¬ particular as Axialgitterkegel and is used correspondingly for improved guiding or introduction of the fuel / air mixture towards the combustion chamber. In an expedient development, the adapter has a diagonally extending portion which extends at a distance from the axial cone and thereby forms a cone-shaped Ab ¬ section of the flow channel. The cone-shaped portion is also referred to as a diagonal section.
Durch diese Weiterbildung ist es insbesondere möglich, die Luft aus dem Düsenraum vorteilhaft zur Kühlung des Axialke¬ gels zu verwenden. Bevorzugterweise ist zwischen der Einlassöffnung des Axialke¬ gels und der Auslassöffnung des Pilotbrenners ein By this development, it is particularly possible to use the air from the nozzle chamber advantageous for cooling the Axialke ¬ gel. Preferably, between the inlet opening of Axialke ¬ gel and the outlet opening of the pilot burner a
Axialverwirbler angeordnet, zur verbesserten Vermischung von mittels des Ringkanals zugeführter Luft und mittels des Pi¬ lotbrenners zugeführtem Brennstoff. Insbesondere erstreckt sich der Axialverwirbler zumindest teilweise am Ende des Pi¬ lotbrenners vorbei und in den Ringkanal hinein. Der Axialverwirbler arranged for improved mixing of supplied by means of the annular channel air and fuel supplied by the Pi ¬ lot burner. In particular, the Axialverwirbler extends at least partially at the end of Pi ¬ lotbrenners and into the annular channel into it. Of the
Axialverwirbler ist zweckmäßigerweise von einem Kragen umgegeben oder umringt, der insbesondere an den Axialkegel angeformt ist. Dabei ist der Axialverwirbler innerhalb des Kragens angeordnet und die außen liegende Seite des Kragens bildet in Kombination mit dem Adapter eine vorteilhafte Verlängerung des Diagonalabschnitts des Strömungskanals. Axialverwirbler is expediently surrounded or surrounded by a collar, which is in particular formed on the axial cone. In this case, the Axialverwirbler is disposed within the collar and the outer side of the collar forms in combination with the adapter an advantageous extension of the diagonal portion of the flow channel.
Zweckmäßigerweise ist der Strömungskanal als Ringraum ausge- bildet. Dadurch ist die Luft insgesamt über einen besonders großen Bereich führbar und daher besonders effizient zur Kühlung der Deckplatte verwendbar. Unter Ringraum wird dabei insbesondere verstanden, dass der Strömungskanal ein von ge¬ eigneten Seitenwänden eingeschlossener Raum ist, der in zu- mindest einer Richtung quer zur Strömungsrichtung eine Ausdehnung aufweist, die vergleichbar ist mit der Länge des Strömungskanals in Strömungsrichtung der Luft. Im Vergleich zu beispielsweise Strömungskanäle, die in ein massives Teil mittels Bohrungen eingebracht sind, lässt sich der als The flow channel is expediently designed as an annular space. As a result, the air is overall over a particularly large area feasible and therefore particularly efficient for cooling the cover plate usable. In this case, the term "annular space" is understood in particular to mean that the flow channel is a space enclosed by suitable sidewalls, which has an extension in at least one direction transverse to the flow direction which is comparable to the length of the flow channel in the flow direction of the air. Compared to, for example, flow channels, which are introduced into a solid part by means of bores, can be as
Ringraum ausgebildete Strömungskanal besonders materialspa¬ rend fertigen und ist zudem hinsichtlich dessen Gewichtes leichter. Im Falle des Ringraums ist weiterhin die Kontakt- fläche zwischen Luft und zu kühlenden Elementen, hier insbesondere der Deckplatte auf vorteilhafte Weise vergrößert. Ring space formed flow channel make particularly material Spa ¬ rend and is also lighter in terms of its weight. In the case of the annulus, the contact Surface between air and elements to be cooled, here in particular the cover plate advantageously increases.
Zum Einströmen von Luft in den Strömungskanal weist dieser vorzugsweise einen in radialer Richtung außen liegenden Luft- einlass auf. Dadurch wird insbesondere ein Luftstrom von au¬ ßen nach innen ausgebildet und ein besonders großer Teil der Deckplatte mittels der daran vorbeiströmenden Luft gekühlt. Der Lufteinlass ist insbesondere ringförmig und wird dann auch als Ringeinlass bezeichnet. Dieser weist einen Radius auf, der insbesondere größer ist, als die radialen Abstände der Düsen zur Längsachse des Brenners. Die Luft wird somit auch aus einem bezüglich der Düsen außenliegenden Bereich des Düsenraums angesaugt. Durch die äußere Lage des Lufteinlasses ist zudem ein besonders großer Strömungsquerschnitt erziel¬ bar. Somit steht eine entsprechende Menge an Luft zur Kühlung und anschließend zur Einleitung in den Brennbereich zur Verfügung . In einer vorteilhaften Weiterbildung ist in radialer Richtung zwischen dem Pilotbrenner und dem Adapter ein ringförmiger Spalt ausgebildet, in den ein Dichtring eingesetzt ist. Die¬ ser dient insbesondere dazu, ein Einströmen von Luft aus dem Düsenraum durch den Spalt, das heißt am Pilotbrenner vorbei in den vom Kopfbereich des Adapters eingeschlossenen Kopfinnenraum zu vermeiden oder zumindest zu reduzieren. For the inflow of air into the flow channel, the latter preferably has an air inlet lying in the radial direction. Characterized in particular an air flow from the outside ¬ SEN is formed inwardly and cooled a particularly large portion of the cover plate by means of the air flowing past it. The air inlet is in particular annular and is then also referred to as a ring inlet. This has a radius which is in particular greater than the radial distances of the nozzles to the longitudinal axis of the burner. The air is thus sucked in from the outside of the nozzle area with respect to the nozzles. Due to the outer layer of the air inlet also a particularly large flow cross-section is achieved ¬ bar. Thus, a corresponding amount of air is available for cooling and then for introduction into the combustion area. In an advantageous development, an annular gap is formed in the radial direction between the pilot burner and the adapter, into which a sealing ring is inserted. The ¬ ser serves, in particular, an inflow of air from the nozzle chamber through the gap, i.e., the pilot burner over to avoid, in the area enclosed by the head portion of the adapter head interior or at least reduce.
In einer bevorzugten Ausgestaltung ist der Dichtring an einem der beiden Teile, nämlich am Pilotbrenner oder am Adapter be- festigt und relativ zu dem anderen dieser beiden Teile verschiebbar. Der Dichtring ist folglich entweder am Pilotbrenner befestigt und relativ zum Adapter verschiebbar oder am Adapter befestigt und relativ zum Pilotbrenner verschiebbar. Aufgrund der im Betrieb üblicherweise vorliegenden thermi- sehen Belastung der verschiedenen Teile des Brenners ergibt sich eine thermische Ausdehnung, die für verschiedene Teile möglicherweise auch verschieden groß ist oder in unterschied¬ liche Richtungen gerichtet ist. Die Verschiebbarkeit des Dichtkolbens ermöglicht dann insbesondere eine Vermeidung von Verspannungen des Pilotbrenners gegen den Adapter und eine daraus möglicherweise resultierende Beschädigung. Um insbesondere zusätzlich zur oben beschriebenen Verschiebbarkeit die Dichtwirkung zu verbessern, weist der Dichtring zumindest einen Steg auf, der sich in axialer Richtung erstreckt und den Dichtring umläuft, wobei der Steg eine Dicht¬ fläche bildet, die an dem Adapter ansitzt. Insbesondere weist der Dichtring somit einen etwa H-förmigen Querschnitt auf und ist dadurch besonders materialsparsam herstellbar, bei zugleich geeigneter Dichtwirkung. In a preferred embodiment, the sealing ring is fastened to one of the two parts, namely to the pilot burner or to the adapter, and is displaceable relative to the other of these two parts. The sealing ring is thus either attached to the pilot burner and displaceable relative to the adapter or attached to the adapter and displaceable relative to the pilot burner. Due to the typically present in the operating thermal see loading of the different parts of the burner results in a thermal expansion, which may also differ in size for different parts or is directed in different directions ¬ Liche. The displaceability of the Sealing piston then allows in particular an avoidance of tension of the pilot burner against the adapter and possibly resulting damage. In order to improve in particular in addition to the above described displaceability, the sealing effect, the sealing ring has at least one web which extends in the axial direction and rotates the sealing ring, wherein the web forms a sealing ¬ surface which ansitzt on the adapter. In particular, the sealing ring thus has an approximately H-shaped cross-section and is therefore particularly economical to produce, at the same time suitable sealing effect.
Das oben beschriebene Problem der thermischen Ausdehnung gilt insbesondere auch für den Adapter und die Deckplatte. Um ein Verklemmen oder Verschieben dieser beiden gegeneinander und eine daraus möglicherweise folgende Verformung des Strömungs¬ kanals zu vermeiden, weist der Adapter zumindest einen Ab¬ standshalter auf, der an der Deckplatte ansitzt. Vorzugsweise ist der Abstandshalter am diagonal verlaufenden Abschnitt des Adapters angebracht und liegt am Axialkegel an, wodurch ins¬ besondere gleichzeitig eine geeignete Beabstandung in radia¬ ler sowie in axialer Richtung erfolgt. Zusätzlich ist durch den Abstandshalter die Montage des Brenners dahingehend ver- einfacht, dass beim Zusammensetzen automatisch eine geeignete Beabstandung und Ausrichtung, insbesondere Zentrierung der Deckplatte, des Adapters und des Pilotbrenners erfolgt. The above-described problem of thermal expansion applies in particular to the adapter and the cover plate. To jamming or moving these two against each other and channel to avoid it may receive the following deformation of the flow ¬, the adapter has at least one from ¬ spacers on the ansitzt on the cover plate. Preferably, the spacer is attached to the diagonal portion of the adapter and abuts the axial cone, whereby in ¬ special at the same time a suitable spacing in radia ¬ ler and in the axial direction takes place. In addition, the mounting of the burner is simplified by the spacer in such a way that during assembly automatically takes place a suitable spacing and alignment, in particular centering of the cover plate, the adapter and the pilot burner.
In einer zweckmäßigen Ausgestaltung ist der Abstandshalter als eine Verformung des Adapters ausgebildet. Dadurch ist auf besonders einfache Weise ein geeigneter Abstandshalter herstellbar. Insbesondere ist der Abstandshalter als Dimpel, Noppe oder Nocke ausgebildet und stellt eine Erhebung oder Vertiefung entlang der Oberfläche des Adapters dar. Zweckmä- ßigerweise sind mehrere Abstandshalter vorhanden, insbesonde¬ re zur Verbesserung der Beabstandung bei der Montage und zur verbesserten Zentrierung bezüglich der Längsachse des Bren- ners . Im Falle mehrerer Abstandshalter sind diese insbesonde re gleichmäßig in Umlaufrichtung des Adapters verteilt. In an expedient embodiment, the spacer is formed as a deformation of the adapter. As a result, a suitable spacer can be produced in a particularly simple manner. In particular, the spacer as dimples, nub or cam is formed and represents an elevation or depression along the surface of the adapter. Zweckmä- ßigerweise a plurality of spacers are present, insbesonde ¬ re to improve the spacing in the assembly and for improved centering with respect to the longitudinal axis of the burner ners. In the case of several spacers these are insbesonde re evenly distributed in the direction of rotation of the adapter.
Vorzugsweise sind der Adapter und die Deckplatte jeweils aus Blechen gefertigt, das heißt mit geringer Materialstärke, wo durch der Brenner in einer vorteilhaften Leichtbauweise herstellbar ist. Die Materialstärke beträgt dabei insbesondere etwa l-4mm im Falle sowohl des Adapters als auch der Deckplatte . Preferably, the adapter and the cover plate are each made of sheets, that is, with a low material thickness, where can be produced by the burner in an advantageous lightweight construction. The material thickness is in particular about 1-4 mm in the case of both the adapter and the cover plate.
Nachfolgend werden Ausführungsbeispiele der Erfindung anhand einer Zeichnung näher erläutert. Darin zeigen: Embodiments of the invention will be explained in more detail with reference to a drawing. Show:
FIG 1 einen Brenner in einer Längsschnittansicht, mit einem Düsenraum und mit einem Adapter, 1 shows a burner in a longitudinal sectional view, with a nozzle chamber and with an adapter,
FIG 2 einen Ausschnitt des Düsenraums gemäß FIG 1 und einen alternativen Adapter, 2 shows a detail of the nozzle chamber according to FIG. 1 and an alternative adapter,
FIG 3 einen Ausschnitt der Anordnung gemäß FIG 1, 3 shows a detail of the arrangement according to FIG. 1,
FIG 4 einen Ausschnitt der Anordnung gemäß FIG 1 mit einem alternativen Dichtring, und 4 shows a detail of the arrangement according to FIG. 1 with an alternative sealing ring, and FIG
FIG 5 den Adapter gemäß FIG 2 in einer perspektivischen Ansicht . 5 shows the adapter according to FIG 2 in a perspective view.
In FIG 1 ist schematisch ein Brenner 2 dargestellt, in einer Schnittansicht entlang einer Längsachse L des Brenners 2. Entlang der Längsachse L, das heißt in axialer Richtung A er streckt sich ein Pilotbrenner 4, zur Förderung eines Brennstoffes in einen Brennbereich 6, der stromab des Pilotbrenners 4 angeordnet ist. Der Brennstoff wird über eine Auslass Öffnung 8 des Pilotbrenners 4 in den Brennbereich 6 In Figure 1, a burner 2 is shown schematically, in a sectional view taken along a longitudinal axis L of the burner 2. Along the longitudinal axis L, that is, in the axial direction A he stretches a pilot burner 4, to promote a fuel in a combustion region 6, the downstream of the pilot burner 4 is arranged. The fuel is via an outlet opening 8 of the pilot burner 4 in the combustion region. 6
eingedüst. Der Brennbereich 6 entspricht dabei dem Innenraun einer dem Brenner 2 nachgeschalteten, hier nicht näher darge stellten Brennkammer. Um den Pilotbrenner 4 herum ist in einem Düsenraum 10 eine Anzahl von Düsen 12 angeordnet, die sich ebenfalls jeweils in axialer Richtung A erstrecken und zueinander parallel verlaufen. Die Düsen 12 dienen der Bereitstellung eines Brenn- stoff/Luft-Gemisches im Brennbereich 6. Dazu ist zu jeder Dü¬ se 12 jeweils eine Brennstofflanze 14 derart angeordnet, dass diese zumindest teilweise rückseitig, das heißt am stromauf liegenden Düsenende 16 in die Düse 12 hineinragt. Dadurch wird insbesondere jeweils ein ringförmiger Düseneinlass aus- gebildet, mittels dessen Luft aus dem Düsenraum 10 in die Dü¬ se 12 einströmbar oder ansaugbar ist, um dort mit dem aus der jeweiligen Brennstofflanze 14 ausgedüsten Brennstoff vermischt zu werden. Die im Düsenraum 10 vorhandene Luft ist hier insbesondere von einem dem Brenner 2 vorgeschalteten, hier nicht gezeigten Verdichter bereitgestellt und somit ver¬ dichtete Luft. Der Brennstoff wird stromauf der Brennstoff- lanzen 14 über eine Anzahl von, hier zwei Brennstoff- Ringkanälen 18 bereitgestellt. Entsprechend sind die Düsen 12 entlang einer Anzahl von, hier zwei Ringen angeordnet und bilden in FIG 1 eine innenliegende und eine außenliegende Stufe . injected. The combustion region 6 corresponds to the Innenraun a burner 2 downstream, not illustrated here Darge combustion chamber. Around the pilot burner 4 around a number of nozzles 12 is arranged in a nozzle chamber 10, which also each extend in the axial direction A and parallel to each other. The nozzles 12 are used to provide a combustible fuel / air mixture in the combustion region 6. For this purpose, is arranged to each SI ¬ se 12 each have a fuel lance 14 such that it at least partly at the back, that is, at the upstream end of the nozzle 16 in the nozzle 12 protrudes. Characterized an annular nozzle inlet is formed exclusively in particular in each case, by means of which air from the nozzle chamber 10 is sucked into the einströmbar or SI ¬ se 12 in order to be mixed there with the jetted from the respective fuel lance 14 fuel. The existing in the nozzle chamber 10, air is here in particular a burner 2 upstream, not shown here compressor provided and thus ver ¬ composed air. The fuel is provided upstream of the fuel lances 14 via a number of, here two fuel ring channels 18. Correspondingly, the nozzles 12 are arranged along a number of, here two rings and form an inner and an outer stage in FIG.
Der Düsenraum 10 ist vom Brennbereich 6, das heißt von der Brennkammer mittels einer Deckplatte 20 getrennt. Diese er- streckt sich im Wesentlichen in radialer Richtung R und weist eine Anzahl von Ausnehmungen auf, die jeweils einem Düsenaus- lass 22 einer Düse 12 zugeordnet sind, zum Einlassen des in den Düsen 12 gebildeten Brennstoff/Luft-Gemisches in den Brennbereich 6. Im Bereich der Längsachse L weist die Deck- platte 20 einen Axialkegel 24 auf der in Strömungsrichtung S aufgeweitet ist. Am stromauf liegenden Ende weist der Axial¬ kegel 24 eine Einlassöffnung 26 auf, die in dem hier gezeig¬ ten Ausführungsbeispiel stromab der Auslassöffnung 8 des Pi¬ lotbrenners 4 angeordnet ist. The nozzle chamber 10 is separated from the combustion region 6, that is to say from the combustion chamber by means of a cover plate 20. This extends essentially in the radial direction R and has a number of recesses, which are each assigned to a nozzle outlet 22 of a nozzle 12, for admitting the fuel / air mixture formed in the nozzles 12 into the combustion area 6. In the region of the longitudinal axis L, the cover plate 20 has an axial cone 24 which is widened in the flow direction S. At the upstream end 24, the axial cone ¬ an inlet opening 26 which is in the here gezeig ¬ th embodiment arranged downstream of the outlet opening 8 of the Pi ¬ lotbrenners. 4
Im Düsenraum 10 ist ein Adapter 28 angeordnet, der einen das Ende des Pilotbrenners 4 umschließenden Kopfbereich 30, einen sich von diesem stromab erstreckenden und sich aufweitenden diagonalen Abschnitt 32 aufweist. Dabei ist der Adapter 28 nach Art einer Glocke ausgeformt, wobei der Kopfbereich 30 ein oberer Teil der Glocke ist und der diagonale Abschnitt 32 ein kegelstumpfförmiger, unterer Teil. Vom stromab liegenden Ende des diagonalen Abschnitts 22 aus erstreckt sich ein ra¬ dialer Abschnitt 34 in radialer Richtung R. Der diagonale und der radiale Abschnitt 32, 34 sind dabei jeweils in einem ge¬ eigneten Abstand AI, A2 bezüglich des Axialkegels 24 bezie¬ hungsweise der Deckplatte 20 angeordnet, beispielsweise etwa 2-5mm. In FIG 1 ist der Adapter 28 einstückig ausgeführt, alternativ ist jedoch eine mehrteilige Ausführung möglich, wie in FIG 2 dargestellt. In the nozzle chamber 10, an adapter 28 is arranged, the one surrounding the end of the pilot burner 4 head portion 30, extending from this downstream and widening diagonal section 32 has. In this case, the adapter 28 is formed in the manner of a bell, wherein the head portion 30 is an upper part of the bell and the diagonal portion 32 is a frusto-conical, lower part. From the downstream end of the diagonal section 22 from a ra ¬ dialer portion 34 extends in the radial direction R. The diagonal and the radial portion 32, 34 are each in a ge ¬ suitable distance AI, A2 relative to the Axialkegels 24 Bezie ¬ hung as the cover plate 20 is arranged, for example about 2-5mm. In Figure 1, the adapter 28 is made in one piece, but alternatively a multi-part design is possible, as shown in FIG.
Die Deckplatte 20 und der Adapter 28 bilden einen Zwischenraum, der als Strömungskanal 36 dient, um Luft aus dem Düsen¬ raum 10 in den Brennbereich 6 einzuströmen und dabei die Deckplatte 20 zu kühlen. Der Strömungskanal 36 umfasst dazu mehrere Abschnitte 38, 40, 42, nämlich: einen radialen Ab¬ schnitt 38 an der Deckplatte 20 entlang, auch als Radialab¬ schnitt 38 bezeichnet, einen diagonalen Abschnitt 40 am Axi¬ alkegel 24 entlang, auch als Diagonalabschnitt 40 bezeichnet, und einen Ringkanal 42, im Kopfbereich 30 zwischen dem Adapter 28 und dem Pilotbrenner 4. Als Lufteinlass 44 dient ein ringförmiger Einlass, der auch als Ringeinlass bezeichnet wird. Dieser umläuft den radialen Abschnitt 34 des Adapters 28, wie besonders FIG 2 deutlich zeigt. Dort sind zudem eine Anzahl an Positionierstegen 46 an den radialen Abschnitt 34 des Adapters 28 angeformt, um eine geeignete Positionierung zu erzielen. Zudem ist aus FIG 2 in Kombination mit FIG 1 erkennbar, dass die Düsen 12 mit deren Düsenenden 16 jeweils in den Radialabschnitt 38 hineinragen und auf diese Weise zylin¬ derförmige Ausnehmungen 48 im Radialabschnitt 38 bilden. The cover plate 20 and the adapter 28 form a gap which serves as a flow channel 36 to flow air from the nozzle ¬ chamber 10 in the combustion region 6 and thereby cool the cover plate 20. The flow channel 36 thereto comprises a plurality of sections 38, 40, 42, namely a radial From ¬ cut 38 to the top plate 20 along, as Radialab ¬ cut 38 denotes a diagonal portion 40 on Axi ¬ alkegel 24 along, as a diagonal section 40 and an annular channel 42, in the head region 30 between the adapter 28 and the pilot burner 4. The air inlet 44 is an annular inlet, which is also referred to as a ring inlet. This revolves around the radial portion 34 of the adapter 28, as shown particularly clearly in FIG. There are also a number of positioning webs 46 formed on the radial portion 34 of the adapter 28 in order to achieve a suitable positioning. In addition, is that the nozzles 12 with their nozzle ends 16 extend respectively in the radial portion 38 and in this way form zylin ¬ derförmige recesses 48 in the radial portion 38 of Figure 2 in combination with FIG 1 seen.
In FIG 1 ist der Strömungspfad P der Luft durch eine Anzahl von Pfeilen verdeutlicht. Die Luft wird zunächst über denIn Figure 1, the flow path P of the air is illustrated by a number of arrows. The air is first over the
Lufteinlass 44 in den Strömungskanal 36 eingelassen und folgt dann dem Radialabschnitt 38 von außen nach innen bis zum Diagonalabschnitt 40. Auf diesem erfolgt eine Umlenkung entlang des Axialkegels 24 in den Innenraum des Kopfbereichs 30. Dort wird die Luft wiederum in Richtung der Einlassöffnung 26 umgelenkt. Zwischen Einlass- und Auslassöffnung 26, 8 ist in dem hier gezeigten Ausführungsbeispiel zusätzlich ein Air inlet 44 is inserted into the flow channel 36 and then follows the radial section 38 from the outside inwards to the diagonal section 40. This is followed by a deflection along of the axial cone 24 in the interior of the head portion 30. There, the air is again deflected in the direction of the inlet opening 26. Between inlet and outlet opening 26, 8 is in the embodiment shown here in addition to a
Axialverwirbler 50 angeordnet, in den die Luft vor einer Vermischung mit dem Brennstoff aus dem Pilotbrenner 4 eingeleitet wird. Der Axialverwirbler 50 ist dabei von einem Kragen 52 umgeben, der als Fortsatz am Axialkegel 24 angebracht ist. Wie FIG 1 und in einer Vergrößerung FIG 3 zeigen, ist zwischen dem Pilotbrenner 4 und dem stromauf liegenden Ende des Adapters 28 ein Spalt 54 ausgebildet, in den ein Dichtring 56 eingesetzt ist. Dieser ist in dem hier gezeigten Ausführungs¬ beispiel am Pilotbrenner 4 befestigt und relativ zum Adapter 28 verschiebbar. In FIG 4 ist eine Variante des Dichtrings 56 dargestellt, mit einem diesen radial außen umlaufenden, sich axial erstreckenden Steg 58, der nach außen eine Dichtfläche 60 ausbildet, die an einer Gegenfläche 62 des Adapters 28 an¬ liegt . Axialverwirbler 50 arranged, in which the air is introduced before mixing with the fuel from the pilot burner 4. The Axialverwirbler 50 is surrounded by a collar 52 which is attached as an extension on the axial cone 24. As shown in FIG 1 and in an enlargement of FIG 3, a gap 54 is formed between the pilot burner 4 and the upstream end of the adapter 28, in which a sealing ring 56 is inserted. This is fixed in the embodiment shown here ¬ example on the pilot burner 4 and relative to the adapter 28 slidably. In FIG 4, a variant of the sealing ring 56 is shown, with this radially outwardly encircling, axially extending web 58 which forms outwardly a sealing surface 60 which is located on a mating surface 62 of the adapter 28 ¬ .
FIG 4 zeigt weiterhin, dass der Adapter 28 eine Anzahl von Abstandshaltern 64 aufweist, um den Adapter 28 von der Deckplatte 20 geeignet zu beabstanden und bei der Montage des Brenners 2 eine geeignete Ausrichtung der Deckplatte 20, des Adapters 28 und des Pilotbrenners 4 zueinander zu erzielen. Der in der FIG 4 gezeigte Adapter 28 ist zudem in FIG 5 in einer perspektivischen Ansicht gezeigt. Deutlich sichtbar sind die als Vertiefungen bezüglich der Außenseite des Adap¬ ters 28 ausgebildeten Abstandshalter 64, die jeweils nach Art eines Dimpels, einer Noppe oder einer Nocke ausgebildet sind. Die Abstandshalter 64 ragen in den Strömungskanal 36 hinein und sitzen an der Deckplatte 20 an. In der hier gezeigten Ausführungsform sind die Abstandshalter 64 auf dem diagonalen Abschnitt 32 des Adapters 28 angeordnet und sitzen außensei- tig am Axialkegel 24 an. 4 further shows that the adapter 28 has a number of spacers 64 to suitably space the adapter 28 from the cover plate 20 and, when mounting the burner 2, a suitable orientation of the cover plate 20, the adapter 28 and the pilot burner 4 to each other achieve. The adapter 28 shown in FIG 4 is also shown in FIG 5 in a perspective view. Clearly visible are formed as depressions with respect to the outside of the Adap ¬ age 28 spacers 64, which are each formed in the manner of a dimple, a knob or a cam. The spacers 64 protrude into the flow channel 36 and sit against the cover plate 20. In the embodiment shown here, the spacers 64 are arranged on the diagonal section 32 of the adapter 28 and seat on the outside on the axial cone 24.

Claims

Patentansprüche claims
1. Brenner (2) für eine Verbrennungsmaschine, mit einem Pi¬ lotbrenner (4), der sich in axialer Richtung (A) erstreckt, mit einem Düsenraum (10), mit einem Brennbereich (6) und mit einer Deckplatte (20), die zwischen dem Düsenraum (10) und dem Brennbereich ( 6) angeordnet ist und die eine Einlassöff¬ nung (26) aufweist, wobei ein Adapter (28) angeordnet ist, zur Führung von Luft aus dem Düsenraum (10) entlang eines vorgegebenen Strömungspfades (P) in Richtung des Brennberei¬ ches (6), dadurch gekennzeichnet, dass zwischen dem Adapter (28) und der Deckplatte (20) ein Strömungskanal (36) als Teil des Strömungspfades (P) gebildet ist und dass der Adapter (28) einen sich radial erstreckenden, ringförmigen Abschnitt (34) aufweist, der mit der Deckplatte (20) einen Radialab¬ schnitt (38) des Strömungskanals (36) ausbildet, zur Kühlung der Deckplatte (20) mittels der Luft. 1. Burner (2) for an internal combustion engine, with a Pi ¬ solder burner (4) extending in the axial direction (A), with a nozzle chamber (10), with a focal region (6) and with a cover plate (20), between the nozzle chamber (10) and the combustion region (6) is arranged and a Einlassöff ¬ lation (26), wherein an adapter (28) is arranged to guide air from the nozzle chamber (10) along a predetermined flow path ( P) in the direction of the Brennberei ¬ ches (6), characterized in that between the adapter (28) and the cover plate (20) a flow channel (36) is formed as part of the flow path (P) and that the adapter (28) has a Has radially extending annular portion (34) which forms a Radialab ¬ cut (38) of the flow channel (36) with the cover plate (20), for cooling the cover plate (20) by means of the air.
2. Brenner (2) nach Anspruch 1, 2. burner (2) according to claim 1,
dadurch gekennzeichnet, dass der Adapter (28) einen Kopfbe¬ reich (30) aufweist, in den der Pilotbrenner (4) hineinragt. characterized in that the adapter (28) has a rich Kopfbe ¬ (30) projects into the pilot burner (4).
3. Brenner (2) nach dem vorhergehenden Anspruch, 3. burner (2) according to the preceding claim,
dadurch gekennzeichnet, dass zwischen dem Pilotbrenner (4) und dem Kopfbereich (30) ein Ringkanal (42) als Teil des Strömungspfades (P) gebildet ist. characterized in that between the pilot burner (4) and the head portion (30) an annular channel (42) is formed as part of the flow path (P).
4. Brenner (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Teil der Deckplatte (20) als Axialkegel (24) ausgebildet ist, an dessen stromauf lie¬ gendem Ende die Einlassöffnung (26) angeordnet ist. 4. burner (2) according to any one of the preceding claims, characterized in that a part of the cover plate (20) as an axial taper (24) is formed, at the upstream end of which lie ¬ ing the inlet opening (26) is arranged.
5. Brenner (2) nach dem vorhergehenden Anspruch, 5. burner (2) according to the preceding claim,
dadurch gekennzeichnet, dass der Adapter (28) einen diago- nal verlaufenden Abschnitt (32) aufweist, der beabstandet von dem Axialkegel (24) verläuft und dadurch einen kegelmantel- förmigen Diagonalabschnitt (40) des Strömungskanals (36) aus¬ bildet . characterized in that the adapter (28) has a diagonally extending section (32) spaced from the axial cone (24) and thereby a diagonal kegelmantel- shaped portion (40) of the flow channel (36) forms ¬.
6. Brenner (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Strömungskanal (36) als Ringraum ausgebildet ist. 6. Burner (2) according to one of the preceding claims, characterized in that the flow channel (36) is designed as an annular space.
7. Brenner (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Strömungskanal (36) einen in radialer Richtung (R) außen liegenden Lufteinlass (44) aufweist . 7. Burner (2) according to one of the preceding claims, characterized in that the flow channel (36) has a radially in the radial direction (R) outer air inlet (44).
8. Brenner (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in radialer Richtung (R) zwischen dem Pilotbrenner (4) und dem Adapter (28) ein ringförmiger Spalt (54) ausgebildet ist, in den ein Dichtring (56) eingesetzt ist. 8. burner (2) according to any one of the preceding claims, characterized in that in the radial direction (R) between the pilot burner (4) and the adapter (28) an annular gap (54) is formed, in which a sealing ring (56) is used.
9. Brenner (2) nach dem vorhergehenden Anspruch, 9. burner (2) according to the preceding claim,
dadurch gekennzeichnet, dass der Dichtring (56) an einem der beiden Teile, nämlich am Pilotbrenner (4) oder am Adapter (28) befestigt ist und relativ zu dem anderen dieser beiden Teile verschiebbar ist. characterized in that the sealing ring (56) is attached to one of the two parts, namely the pilot burner (4) or the adapter (28) and is displaceable relative to the other of these two parts.
10. Brenner (2) nach einem der beiden vorhergehenden Ansprüche, 10. Burner (2) according to one of the two preceding claims,
dadurch gekennzeichnet, dass der Dichtring (56) zumindest einen Steg (58) aufweist, der sich in axialer Richtung (A) erstreckt und den Dichtring (56) umläuft, wobei der Steg (58) eine Dichtfläche (60) bildet, die an dem Adapter (28) an¬ sitzt. characterized in that the sealing ring (56) comprises at least one web (58) extending in the axial direction (A) and circumscribing the sealing ring (56), the web (58) forming a sealing surface (60) attached to the Adapter (28) sits on ¬ .
11. Brenner (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Adapter (28) zumindest ei¬ nen Abstandshalter (64) aufweist, der an der Deckplatte (20) ansitzt . 11. Burner (2) according to any one of the preceding claims, characterized in that the adapter (28) at least ei ¬ NEN spacer (64), which ansitzt on the cover plate (20).
12. Brenner (2) nach dem vorhergehenden Anspruch, 12. burner (2) according to the preceding claim,
dadurch gekennzeichnet, dass der Abstandshalter (64) als eine Verformung des Adapters (28) ausgebildet ist. characterized in that the spacer (64) is formed as a deformation of the adapter (28).
13. Verbrennungsmaschine, insbesondere Gasturbine mit einem Brenner (2) nach einem der vorhergehenden Ansprüche. 13. Combustion engine, in particular gas turbine with a burner (2) according to one of the preceding claims.
EP15744537.0A 2014-07-30 2015-07-24 Burner for a combustion engine and combustion engine Not-in-force EP3143335B1 (en)

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EP14179137.6A EP2980482A1 (en) 2014-07-30 2014-07-30 Burner for a combustion engine and combustion engine
PCT/EP2015/066984 WO2016016116A1 (en) 2014-07-30 2015-07-24 Burner for a combustion machine and combustion machine

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EP3143335B1 (en) 2018-02-28
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WO2016016116A1 (en) 2016-02-04
EP2980482A1 (en) 2016-02-03
CA2956526C (en) 2018-08-21

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