EP3134677B1 - Brûleur ayant un oscillateur fluidique, pour une turbine à gaz et turbine à gaz ayant le brûleur - Google Patents
Brûleur ayant un oscillateur fluidique, pour une turbine à gaz et turbine à gaz ayant le brûleur Download PDFInfo
- Publication number
- EP3134677B1 EP3134677B1 EP15763533.5A EP15763533A EP3134677B1 EP 3134677 B1 EP3134677 B1 EP 3134677B1 EP 15763533 A EP15763533 A EP 15763533A EP 3134677 B1 EP3134677 B1 EP 3134677B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- burner
- interaction chamber
- region
- output
- 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.)
- Not-in-force
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- 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
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/16—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration with devices inside the flame tube or the combustion chamber to influence the air or gas flow
- F23R3/18—Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants
- F23R3/20—Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants incorporating fuel injection means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/07001—Air swirling vanes incorporating fuel injectors
-
- 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
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/00014—Reducing thermo-acoustic vibrations by passive means, e.g. by Helmholtz resonators
Definitions
- the invention relates to a burner for a gas turbine with a central burner axis and a burner axis at least partially surrounding Vormischpassage.
- the premix passage thus has a passage cross-sectional area which extends around the burner axis.
- the central burner axis is an imaginary, infinitely long line.
- the passage cross-sectional area can be arranged, for example, annularly or as a full circle around the burner axis.
- the premix passage can run coaxially (same axis of rotation) to the burner axis.
- the diameter of the ring or full circle may vary along the burner axis section.
- the premix passage can be formed, at least in sections, as a ring-chamber passage (annular cross-section), which can transition into a premix passage section, which is designed as a full circle in cross-section.
- the premix passage is bounded radially outwardly by a wall.
- the premix passage can be flowed through during operation of compressor air. It serves to mix fuel and air, wherein a burner lance or burner hub and a number of fuel injectors are arranged in the premix passage.
- the fuel injectors extending from the burner lance / hub toward the wall are fluidly coupled to fuel nozzles that are at least partially connected to the fuel lance hub / hub.
- the fuel injectors may include both gaseous fuel fuel nozzles and fuel nozzles for oil operation. The same applies to the burner lance / hub, which may alternatively be formed without fuel nozzles.
- the burner lance can also be called a burner hub in the context of this invention.
- the burner lance can be arranged centrally in the premix passage.
- the burner lance can protrude from upstream into the premix passage, so that the passage is limited only in sections radially inward from the burner lance.
- the premix passage may have a full circular cross-sectional area downstream of the burner lance.
- the burner lance may also extend substantially to the exit of the premix passage.
- the premix passage may be bounded radially inward at least in sections by a burner hub with a substantially truncated cone-shaped surface arranged centrally in the passage, which bounds the premix passage radially to the inside from an upstream end to an end region of the hub.
- the Vormischpassage can go downstream of the hub in a full-circle in cross-section Vormisch Scheme.
- the premix passage thus has an annular passage cross-sectional area whose diameter may decrease in the flow direction.
- further premix passages may be arranged in the burner hub or, for example, a central pilot burner.
- the premix passage may also be referred to as premix channel in the context of this invention.
- Fuel is injected into the premix passage via the fuel injectors and may mix with a compressor airflow flowing through the premix passage to the downstream exit of the premix passage so that the premix burner provides at its exit a fuel / air mixture for discharge into a combustion chamber.
- fuel can also be injected via fuel nozzles arranged directly on the burner lance
- Object of the present invention is to provide a burner of the type mentioned for a gas turbine, with which in the operation of the burner, a reduction of pollutant emissions or a reduction of pressure pulsations is possible.
- the fuel supply arrangement comprises at least one fluidic oscillator with an interaction chamber, wherein an input of the interaction chamber is connected to a fuel passage of the fuel supply arrangement and a first output channel of the interaction chamber is at least up to a first Fuel nozzle extends and a second output channel extends at least to a second fuel nozzle, wherein the fluidic oscillator per output channel comprises a feedback line, wherein the feedback line opens with its one end in the region downstream of the at least one fuel nozzle in the respective output channel and the other end into an entrance area of the interaction chamber.
- the at least first and the at least second fuel nozzle or the first and second group of fuel nozzles can be arranged on a common fuel injector and distributed in the radial direction for a homogeneous distribution of the fuel in the premix passage.
- the at least first fuel nozzle could, for example, also be arranged on a suction side and the at least second fuel nozzle on a pressure side of a bucket-type fuel injector be.
- the first and second groups of fuel nozzles can also be arranged, for example, on different fuel injectors. For example, in fuel injectors arranged substantially opposite to the burner lance.
- Fluidic oscillators have long been known as fluidic controls that do without expensive valves. For example, these are used for the supply of air in the boundary layer of wings to prevent separation of the boundary layer.
- Fluidic oscillators in the field of fuel injection in gas turbine combustion chambers are, for example, from the documents US 20110023493 and US 3748852 known.
- the feedback signal is lower and the fuel will flow longer in the output channel than in reverse pressure conditions before the fuel nozzles of the output channel in the premix passage. If the static pressure in the premix passage in the area of a fuel nozzle group is lower, more fuel flows through the associated outlet channel when the associated output of the interaction chamber is pressurized, and the dynamic pressure in the output channel is higher.
- the associated feedback line opens into the exit channel downstream of the at least one fuel nozzle of the exit channel
- the pressure in the feedback line opening into the end region of the exit channel is higher and the associated fuel jet will more rapidly detach from the sidewall in the entrance area of the interaction chamber and fuel the next exit apply.
- the oscillation of the fuel jet in the interaction chamber will supply the output channel with fuel for a longer period of time a fuel nozzle opens into a region of the premix passage in which a higher pressure prevails. This compensates for the effect that in general less fuel escapes from fuel nozzles, which discharge into a region of higher passenger pressure or more fuel is injected into regions of low pressure. By means of this compensation, a more homogeneous fuel concentration can be generated in the premix passage according to the invention.
- the injection of the fuel through the at least two fuel nozzle groups or fuel nozzles connected to the fluidic oscillator regulates independently, without the need for an additional control device.
- the resulting more homogeneous distribution of fuel concentration in the premix passage leads to reduced pollutant emissions.
- Due to the temporally and locally fluctuating fuel injection a good mixing of the fuel, which is spouted out by the fuel nozzle groups, with the compressor air flowing past is also brought about.
- a broadening of the delay time profile of the burner is effected, whereby an interaction of the burner with the flame and an increase of thermoacoustic vibrations is reduced.
- the supplied through the fluidic oscillator fuel nozzle or fuel nozzle groups of the burner due to the both temporally and locally pulsating fuel jet at the outlet of the nozzles conditionally a fluctuation of the fuel concentration profile in the passing compressor air, which in turn the thermoacoustic stability due to a broadened delay time profile the burner improved - for example, compared to burners with conventional pressure-swirl nozzles or full-jet nozzles.
- a frequency of the pulsating injection of the fuel can be adjusted for example by the size of the interaction chamber.
- the burner may include a plurality of fluidic oscillators, which supply at least two output channels each having at least one fuel nozzle or group of fuel nozzles with fuel.
- the first output channel extends up to a first group of fuel nozzles and the second output channel extends up to a second group of fuel nozzles, wherein the feedback line respectively opens into an area downstream of the respective group of fuel nozzles in the output channel.
- the at least two fuel nozzles or at least two fuel nozzle groups are arranged in a common fuel injector and differ in their radial arrangement in the Vormischpassage, so that the fuel concentration in the radial direction despite different pressure conditions in the burner near the lance and brennerlanzenfernen Uniform area of the premix passage.
- the fluidic oscillator can be arranged in the burner hub or in the fuel injector.
- the burner comprises more than two groups of fuel nozzles in different fuel injectors connected in such a way to the fluidic oscillator.
- a further advantageous embodiment of the invention can provide that the different fuel injectors are arranged circumferentially on the burner lance and the associated output channels circumferentially on the interaction chamber.
- the oscillation of a fuel jet entering the interaction chamber through the inlet under pressure is, according to this embodiment of the invention, ignited by alternately applying the jet to the divergently formed jet Sidewall portions.
- the excitation of the oscillation in the interaction chamber according to the invention is based on the flow delay caused in the entrance area by the diverging side walls / sidewall regions.
- the burner may be a centrally located pilot burner of the burner assembly.
- the main burner of the burner assembly according to one of claims 1 to 11 may be formed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Claims (14)
- Brûleur (56, 64, 84) ayant un axe central et un passage (60, 68, 92) de prémélange entourant l'axe du brûleur, au moins par endroit, le passage de prémélange étant délimité vers l'extérieur radialement par une paroi (70), étant parcouru en fonctionnement par de l'air de compresseur et servant à mélanger du combustible et de l'air, dans lequel, dans le passage de prémélange, sont montés une lance (58, 72, 94) de brûleur ou un moyeu de brûleur et un certain nombre d'injecteurs (79, 79a, 79b, 98, 100) de combustible, qui s'étendent de la lance du brûleur ou du moyeu du brûleur en direction de la paroi (70) et qui ont des buses (80, 80a, 80b) de combustible communiquant fluidiquement avec un agencement (73) d'apport de combustible entouré, au moins en partie, par la lance du brûleur ou par le moyeu du brûleur, caractérisé en ce que
l'agencement (73) d'apport de combustible comprend au moins un oscillateur (24a, 24b, 85) fluidique ayant une chambre (26) d'interaction, une entrée (28) de la chambre d'interaction étant raccordée à un canal (82) pour du combustible de l'agencement d'apport de combustible et un premier canal (86) de sortie de la chambre d'interaction s'étendant au moins jusqu'à une première buse (80a) de combustible et un deuxième conduit (88) de sortie s'étendant au moins jusqu'à une deuxième buse (80b) de combustible, l'oscillateur fluidique comprenant, par canal (86, 88) de sortie, un conduit (38, 38a, 38b) de réinjection, le conduit de réinjection débouchant dans le canal respectif de sortie par l'une de ses extrémités, dans la partie en aval de la au moins une buse de combustible, et par l'autre extrémité, dans une partie (30) d'entrée de la chambre (26) d'interaction. - Brûleur (56, 64, 84) suivant la revendication 1,
caractérisé en ce que
le premier canal (86) de sortie s'étend jusqu'à un premier groupe de buses (80a) de combustible et le deuxième canal (88) de sortie s'étend jusqu'à un deuxième groupe de buses (80b) de combustible, le conduit (38a, 38b) de réinjection débouchant dans le canal respectif de sortie, respectivement dans une partie en aval du groupe respectif de buses (80, 80a, 80b) de combustible. - Brûleur suivant l'une des revendications 1 ou 2,
caractérisé en ce que
le conduit (38a, 38b) de réinjection se raccorde au canal (86, 88) de sortie en aval de la au moins une buse (80a, 80b) de combustible. - Brûleur suivant l'une des revendications 1 à 3,
caractérisé en ce que
la au moins une première buse de combustible et la au moins une deuxième buse de combustible sont montées dans des injecteurs (79a, 79b) de combustible différents. - Brûleur suivant la revendication précédente,
caractérisé en ce que
les deux injecteurs (79a, 79b) de combustible sont montés sur la lance (72) du brûleur en étant sensiblement en opposition. - Brûleur suivant la revendication 4 ou 5,
caractérisé en ce que
le brûleur comprend plus de deux groupes, reliés ainsi à l'oscillateur fluidique, de buses (80a, 80b) de combustible dans des injecteurs (79a, 79b) de combustible différents. - Brûleur suivant la revendication 6,
caractérisé en ce que
les injecteurs (79a, 79b) de combustible différents sont montés autour de la lance (72) du brûleur et les canaux (86, 88) de sortie associés autour de la chambre (26) d'interaction. - Brûleur suivant l'une des revendications précédentes,
caractérisé en ce que
le au moins un injecteur (79) de combustible comprend un corps (71) de base, sur lequel sont montées les buses (80) de combustible entourées de l'injecteur de combustible, le corps de base étant notamment une pale (76) de tourbillonnement d'un producteur (74) de tourbillons. - Brûleur suivant l'une des revendications précédentes,
caractérisé en ce que
la chambre d'interaction comprend, à l'une de ses extrémités, l'entrée (28) et, à une extrémité opposée, une partie (32) de sortie, et est délimitée par des parois latérales ou par des parties (40) de parois latérales, qui s'étendent de l'entrée de la chambre jusqu'à la partie (32) de sortie comprenant les sorties (34, 36), au moins deux parois latérales ou parties (40) de parois latérales opposées, divergeant au moins dans la partie (30) d'entrée en direction de la partie de sortie. - Brûleur suivant l'une des revendications précédentes,
caractérisé en ce qu'
au moins deux parties (40) de parois latérales opposées divergent dans la partie d'entrée de la chambre d'interaction, en direction de la partie de sortie, d'un angle plus grand que 7,5 degrés par rapport à une direction d'entrée de l'entrée de la chambre d'interaction. - Brûleur suivant l'une des revendications précédentes,
caractérisé en ce que
la chambre d'interaction est sensiblement de révolution, la chambre (26) d'interaction s'élargissant, au moins dans la partie d'entrée, à la manière d'un diffuseur, en direction de la partie de sortie. - Agencement (48) de brûleur, comprenant un certain nombre de brûleurs,- dans lequel des brûleurs (64) principaux sont disposés suivant un cercle ou plusieurs cercles concentriques, caractérisé en ce qu'au moins un brûleur (56, 64) est constitué suivant l'une des revendications 1 à 11.
- Chambre de combustion (10) pour une turbine (1) à gaz,
caractérisée en ce que
la chambre de combustion comprend au moins un brûleur (11, 48, 56, 64) suivant l'une des revendications 1 à 12. - Turbine à gaz ayant au moins une chambre de combustion,
caractérisée en ce que
la chambre de combustion est constitué suivant la revendication 13.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014218288 | 2014-09-12 | ||
PCT/EP2015/070355 WO2016037966A1 (fr) | 2014-09-12 | 2015-09-07 | Brûleur comprenant un oscillateur fluidique pour une turbine à gaz et turbine à gaz comprenant au moins un brûleur de ce type |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3134677A1 EP3134677A1 (fr) | 2017-03-01 |
EP3134677B1 true EP3134677B1 (fr) | 2018-03-07 |
Family
ID=54140423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15763533.5A Not-in-force EP3134677B1 (fr) | 2014-09-12 | 2015-09-07 | Brûleur ayant un oscillateur fluidique, pour une turbine à gaz et turbine à gaz ayant le brûleur |
Country Status (5)
Country | Link |
---|---|
US (1) | US20170254541A1 (fr) |
EP (1) | EP3134677B1 (fr) |
JP (1) | JP6321282B2 (fr) |
CN (1) | CN106662328A (fr) |
WO (1) | WO2016037966A1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3062019B1 (fr) * | 2015-02-27 | 2018-11-21 | Ansaldo Energia Switzerland AG | Procédé et dispositif de stabilisation de flamme dans un brûleur d'un moteur à combustion stationnaire |
US10386074B2 (en) * | 2016-12-09 | 2019-08-20 | Solar Turbines Incorporated | Injector head with a resonator for a gas turbine engine |
US11156162B2 (en) * | 2018-05-23 | 2021-10-26 | General Electric Company | Fluid manifold damper for gas turbine engine |
KR102142140B1 (ko) * | 2018-09-17 | 2020-08-06 | 두산중공업 주식회사 | 연료 노즐, 이를 포함하는 연소기 및 가스 터빈 |
US11174792B2 (en) | 2019-05-21 | 2021-11-16 | General Electric Company | System and method for high frequency acoustic dampers with baffles |
US11156164B2 (en) | 2019-05-21 | 2021-10-26 | General Electric Company | System and method for high frequency accoustic dampers with caps |
CN110449309B (zh) * | 2019-08-16 | 2020-06-26 | 中国航空发动机研究院 | 一种流体振荡器阵列及其频率同步方法 |
CN113280366B (zh) * | 2021-05-13 | 2022-09-27 | 中国航空发动机研究院 | 一种基于自激扫掠振荡燃油喷嘴的加力燃烧室结构 |
CN114856827B (zh) * | 2022-05-12 | 2023-06-30 | 中国航发四川燃气涡轮研究院 | 可调节喷嘴位置及喷射方向的可拆卸扇形喷嘴 |
KR20240003230A (ko) * | 2022-06-30 | 2024-01-08 | 두산에너빌리티 주식회사 | 제트 노즐, 연소기 및 이를 포함하는 가스터빈 |
CN117960415B (zh) * | 2024-03-28 | 2024-07-09 | 箭牌家居集团股份有限公司 | 振荡器单元及出水装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3748852A (en) * | 1969-12-05 | 1973-07-31 | L Cole | Self-stabilizing pressure compensated injector |
US5456594A (en) * | 1994-03-14 | 1995-10-10 | The Boc Group, Inc. | Pulsating combustion method and apparatus |
JP3457907B2 (ja) * | 1998-12-24 | 2003-10-20 | 三菱重工業株式会社 | デュアルフュエルノズル |
JP2003148710A (ja) * | 2001-11-14 | 2003-05-21 | Mitsubishi Heavy Ind Ltd | 燃焼器 |
US6718889B1 (en) * | 2002-08-30 | 2004-04-13 | Central Boiler, Inc. | Draft controlled boiler fuel nozzle |
US6820431B2 (en) * | 2002-10-31 | 2004-11-23 | General Electric Company | Acoustic impedance-matched fuel nozzle device and tunable fuel injection resonator assembly |
EP1662202B1 (fr) * | 2004-11-30 | 2016-11-16 | Siemens Aktiengesellschaft | Brûleur pour une turbine à gaz |
US8474265B2 (en) * | 2009-07-29 | 2013-07-02 | General Electric Company | Fuel nozzle for a turbine combustor, and methods of forming same |
EP2327933A1 (fr) * | 2009-11-30 | 2011-06-01 | Siemens Aktiengesellschaft | Agencement de brûleur |
US20110173983A1 (en) * | 2010-01-15 | 2011-07-21 | General Electric Company | Premix fuel nozzle internal flow path enhancement |
US20110225973A1 (en) * | 2010-03-18 | 2011-09-22 | General Electric Company | Combustor with Pre-Mixing Primary Fuel-Nozzle Assembly |
JP5156066B2 (ja) * | 2010-08-27 | 2013-03-06 | 株式会社日立製作所 | ガスタービン燃焼器 |
JP5908379B2 (ja) * | 2012-09-24 | 2016-04-26 | 三菱日立パワーシステムズ株式会社 | ガスタービン燃焼器 |
-
2015
- 2015-09-07 EP EP15763533.5A patent/EP3134677B1/fr not_active Not-in-force
- 2015-09-07 WO PCT/EP2015/070355 patent/WO2016037966A1/fr active Application Filing
- 2015-09-07 US US15/503,990 patent/US20170254541A1/en not_active Abandoned
- 2015-09-07 JP JP2017504403A patent/JP6321282B2/ja active Active
- 2015-09-07 CN CN201580033859.5A patent/CN106662328A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
US20170254541A1 (en) | 2017-09-07 |
WO2016037966A1 (fr) | 2016-03-17 |
EP3134677A1 (fr) | 2017-03-01 |
JP2017527765A (ja) | 2017-09-21 |
JP6321282B2 (ja) | 2018-05-09 |
CN106662328A (zh) | 2017-05-10 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 20161114 |
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