EP1319895A2 - Magervormischbrenner für eine Gasturbine sowie Verfahren zum Betrieb eines Magervormischbrenners - Google Patents
Magervormischbrenner für eine Gasturbine sowie Verfahren zum Betrieb eines Magervormischbrenners Download PDFInfo
- Publication number
- EP1319895A2 EP1319895A2 EP02023428A EP02023428A EP1319895A2 EP 1319895 A2 EP1319895 A2 EP 1319895A2 EP 02023428 A EP02023428 A EP 02023428A EP 02023428 A EP02023428 A EP 02023428A EP 1319895 A2 EP1319895 A2 EP 1319895A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- nozzles
- premix burner
- lean premix
- lean
- 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
Links
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
- 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
- F23R3/346—Feeding into different combustion zones for staged combustion
-
- 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
- F23C2201/00—Staged combustion
- F23C2201/20—Burner staging
Definitions
- the invention relates to a lean premix burner for a gas turbine with the features of the generic term of Main claim and a method for operating a lean premix burner.
- the invention relates to a lean premix burner with at least one with primary fuel nozzles provided fuel supply ring.
- Such a lean premix burner can either be used as an LPP module or be designed as a swirl cup.
- Lean premix burners are from the prior art in a wide variety Design forms known.
- Lean premix burners were developed, among other things, for the Avoid formation of nitrogen oxides. For this, the air-fuel ratio procedurally high, so that a very lean mixture is created. This creates in the main combustion zone relatively low combustion temperatures.
- a disadvantage can be that by the relative low combustion temperatures the combustion itself is not as complete as it is at higher temperatures would. Thus unburned hydrocarbon and Carbon monoxide emissions.
- pilot burners must be available for safe, airworthy operation. These pilot burners ensure a high local combustion temperature. This in turn leads to high flame stability.
- a disadvantage of the operation of the pilot burner is that relatively high NO x emissions arise.
- the object of the invention is a lean premix burner and a method for operating a lean premix burner to create which under simple construction Avoiding the state of the art at low thermal Lead stress and even in very lean conditions burn safely.
- the task with regard to the lean premix burner through the combination of features of the main claim solved with regard to the method, the solution is done the task through the combination of features of the subordinate Claim.
- Show the respective subclaims further advantageous embodiments of the invention.
- the lean premix burner according to the invention stands out through a number of significant advantages.
- the additional fuel secondary nozzles make it possible to enrich the fuel-air mixture locally. It is therefore not necessary, additional pilot burners or the like provided. Rather, areas arise according to the invention on the fuel injector ring, where a richer There is a fuel-air mixture. This leads to one Combustion at higher temperatures and thus a more stable one Flame guide. This results in a more stable one Operation of the lean premix burner, the risk of extinguishing is avoided in a reliable manner.
- the fuel primary nozzles evenly around the circumference of the fuel supply ring are distributed while the Fuel secondary nozzles distributed unevenly around the circumference are. It is particularly advantageous if the fuel secondary nozzles only in some sectors of the fuel injector ring are arranged. This ensures that individual areas of the fuel injector ring with a richer one Mixture can be supplied.
- the fuel supply is switched in such a way that that selectively with low or low load near at least two fuel primary nozzles additional, adjacent Secondary fuel nozzles for enriching the fuel-air mixture be put into operation.
- Fuel injector ring designed additional fuel mini-nozzles are. These mini fuel nozzles can be in groups be arranged (cluster).
- Stability flame safety
- Another significant advantage of the invention is in that a continuous transition from full load operation to a low or low load operation can.
- Fuel shift between pilot burners and Lean premix burners and the systems required for this can be dispensed with entirely according to the invention. From this again there is a better thrust course when switching the gas turbine to different load ranges.
- Fig. 1 shows a schematic side view of an inventive Lean premixing module in a gas turbine combustion chamber.
- Reference number 1 denotes a flame tube, which is preceded by a lean premix burner. This comprises an outer housing 2 and an inner housing 3. There is a fuel injector ring on the inner housing 4 trained.
- Reference number 5 describes an inner body of the lean premix burner, with the reference number 6 fuel nozzles are shown in general.
- Lean premix burners of this type are in their basic construction known from the prior art, so that further Executions can be dispensed with at this point.
- Fig. 2 shows a sectional view along the line A-B of Fig. 1.
- Fig. 2 explains that some of the Fuel nozzles 6, namely the fuel nozzles 6a in operation are out of operation while the illustrated fuel nozzles 6b are.
- Fig. 3 is a section through an embodiment is enlarged again of the fuel supply ring according to the invention 4 shown.
- This includes two fuel supply channels 7, each of which has several fuel primary nozzles on the circumference 8 and fuel secondary nozzles 9 assigned are.
- 3 shows that that the fuel primary nozzles 8 and the fuel primary nozzles 9 each with their own fuel supply channels 7 are provided so that a different Fuel supply can take place.
- FIG. 4 and 5 each show an end view (greatly simplified) the arrangement of the fuel nozzles on the circumference of the fuel supply ring 4.
- FIG. 5 shows overall four fuel nozzle sectors, in which different, Unevenly distributed orders of Fuel secondary nozzles 9 are shown. Since the Primary fuel nozzles 8 and primary fuel nozzles 9 in are different levels (see Fig. 3) 5 shows the arrangement of the fuel secondary nozzles 9th
- 6 and 7 show a simplified, schematic representation the arrangement of circumferentially graded lean premix burners.
- 6 shows a symmetrical peripheral circuit, at which lean premixing modules 14 are in operation are, with lean premixing modules 15, which are out of operation are, take turns.
- FIG. 7 chosen with an asymmetrical circumferential gradation (grouping circumferential circuit) is selected. They are each several lean premixing modules 14 in operation side by side, while adjacent several lean premixing modules 15 out of operation are taken.
- FIG. 8 shows a sectional view, similar to FIG. 2, in which additionally grouped fuel mini-nozzles 13 Arrangement (cluster) on the fuel supply ring 4 are provided. These fuel mini nozzles 13 have a higher injection speed of the Fuel and thereby lead to a locally richer Fuel-air mixture. Adjacent to the fuel mini nozzles 13, primary fuel nozzles 8 are shown schematically.
- a switching point is provided at the operating point I.
- the burner modules or lean premix burners are switched off in such a way that the lean premix burners that remain in operation or modules a thermal load of approximately 100% reach at switching point I.
- the switching takes place via valves, using switches or controllable valves can.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
Description
- Fig. 1
- eine vereinfachte Darstellung eines Magervormischbrenners in einer Gasturbinenbrennkammer,
- Fig. 2
- eine Prinzipansicht entlang der Linie A-B von Fig. 1, die die Anordnung von Primärdüsen am Umfang zeigt,
- Fig. 3
- eine vergrößerte Teil-Schnittansicht eines erfindungsgemäßen Brennstoff-Eindüserings,
- Fig. 4
- eine stark vereinfachte schematische stirnseitige Ansicht eines Brennstoff-Versorgungsrings mit gleichmäßiger Verteilung der BrennstoffPrimärdüsen,
- Fig. 5
- eine Ansicht analog Fig. 4, eines Teillast- oder Niedriglastbetriebs,
- Fig. 6
- eine Darstellung, ähnlich den Fig. 4 und 5, mit Darstellung unterschiedlich geschalteten Magervormischbrennern,
- Fig. 7
- eine abgewandelte Darstellung der Fig. 6,
- Fig. 8
- eine Schnittansicht, ähnlich Fig. 2, zur Darstellung von Brennstoff-Minidüsen, und
- Fig. 9
- ein Betriebsdiagramm unterschiedlicher Laststufen.
- 1
- Flammrohr
- 2
- äußeres Gehäuse des Magervormischbrenners
- 3
- inneres Gehäuse des Magervormischbrenners
- 4
- Brennstoff-Versorgungsring des Magervormischbrenners
- 5
- innerer Körper des Magervormischbrenners
- 6
- allgemeine Brennstoffdüsen
- 7
- allgemeiner Brennstoff-Zuführungskanal
- 8
- Brennstoff-Primärdüse
- 9
- Brennstoff-Sekundärdüse
- 12
- Brennstoff-Düsensektor
- 13
- Brennstoff-Minidüse
- 14
- Magervormischmodul in Betrieb
- 15
- Magervormischmodul außer Betrieb
Claims (11)
- Magervormischbrenner für eine Gasturbine, mit zumindest einem mit Brennstoff-Primärdüsen (8) versehenen Brennstoff-Eindüsering (4),
dadurch gekennzeichnet, dass
an dem Brennstoff-Versorgungsring (4) zusätzliche Brennstoff-Sekundärdüsen (9) vorgesehen sind. - Magervormischbrenner nach Anspruch 1,
dadurch gekennzeichnet, dass
die Brennstoff-Primärdüsen (8) gleichmäßig am Umfang des Brennstoff-Versorgungsrings (4) verteilt sind, während die Brennstoff-Sekundärdüsen (9) ungleichmäßig am Umfang verteilt sind. - Magervormischbrenner nach Anspruch 2,
dadurch gekennzeichnet, dass
die Brennstoff-Sekundärdüsen (9) nur in einigen Sektoren des Brennstoff-Versorgungsrings (4) angeordnet sind. - Magervormischbrenner nach Anspruch 1,
dadurch gekennzeichnet, dass
an dem Brennstoff-Versorgungsring (4) Brennstoff-Minidüsen (13) ausgebildet sind. - Magervormischbrenner nach Anspruch 4,
dadurch gekennzeichnet, dass
die Brennstoff-Minidüsen (13) in Gruppen angeordnet sind. - Magervormischbrenner nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass
die Brennstoff-Sekundärdüsen (9) und/oder die Brennstoff-Minidüsen (13) ein reicheres Luft-Brennstoff-Gemisch liefern. - Verfahren zum Betrieb eines Magervormischbrenners für eine Gasturbine mit zumindest einem mit Brennstoff-Primärdüsen (8) versehenen Brennstoff-Versorgungsring (4), an dem zusätzliche Brennstoff-Sekundärdüsen (9) vorgesehen sind,
dadurch gekennzeichnet, dass
bei Minder- bzw. Niedriglast der Gasturbine lokal am Brennstoff-Versorgungsring (4) ein reicheres Luft-Brennstoff-Gemisch eingestellt wird, während an anderen Stellen des Brennstoff-Versorgungsrings (4) kein Brennstoff über die Primärdüsen (8) eingespritzt wird, wobei die Gesamtbrennstoffmenge, die dem Magervormischbrenner zugeführt wird, im Wesentlichen gleich bleibt. - Verfahren nach Anspruch 7,
dadurch gekennzeichnet, dass
bei Minder- bzw. Niedriglast der Gasturbine benachbart zumindest zwei Brennstoff-Primärdüsen (8) Brennstoff-Sekundärdüsen (9) zur lokalen Anreicherung des Brennstoff-Luft-Gemisches zugeschaltet werden. - Verfahren nach einem der Ansprüche 7 oder 8,
dadurch gekennzeichnet, dass
die Brennstoff-Primärdüsen (8), die nicht benachbart zu den Brennstoff-Sekundärdüsen (9) angeordnet sind, abgeschaltet werden. - Verfahren nach einem der Ansprüche 7 bis 9,
dadurch gekennzeichnet, dass
bei weiterem Abnehmen der Last der Gasturbine die lokale Versorgung mit reicherem Brennstoff-Luft-Gemisch durch zusätzliche Brennstoff-Minidüsen (13) erfolgt. - Verfahren nach Anspruch 10,
dadurch gekennzeichnet, dass
die jeweils in Betrieb befindlichen Brennstoff-Primärdüsen (8), Brennstoff-Sekundärdüsen (9) und Brennstoff-Minidüsen (13) in lokalen Gruppen am Umfang des Brennstoff-Versorgungsrings (4) geschaltet werden.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10160997 | 2001-12-12 | ||
| DE10160997A DE10160997A1 (de) | 2001-12-12 | 2001-12-12 | Magervormischbrenner für eine Gasturbine sowie Verfahren zum Betrieb eines Magervormischbrenners |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1319895A2 true EP1319895A2 (de) | 2003-06-18 |
| EP1319895A3 EP1319895A3 (de) | 2004-01-07 |
| EP1319895B1 EP1319895B1 (de) | 2007-11-07 |
Family
ID=7708919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02023428A Expired - Lifetime EP1319895B1 (de) | 2001-12-12 | 2002-10-19 | Magervormischbrenner für eine Gasturbine sowie Verfahren zum Betrieb eines Magervormischbrenners |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6945053B2 (de) |
| EP (1) | EP1319895B1 (de) |
| DE (2) | DE10160997A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009003729A1 (de) * | 2007-07-02 | 2009-01-08 | Siemens Aktiengesellschaft | Brenner und verfahren zum betreiben eines brenners |
| RU2455569C1 (ru) * | 2008-04-01 | 2012-07-10 | Сименс Акциенгезелльшафт | Горелка |
| EP2414653B1 (de) * | 2009-04-01 | 2017-03-01 | General Electric Technology GmbH | Gasturbine mit verbessertem teillast-emissionsverhalten |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0302721D0 (en) * | 2003-02-05 | 2003-03-12 | Rolls Royce Plc | Fuel nozzles |
| US20090217669A1 (en) * | 2003-02-05 | 2009-09-03 | Young Kenneth J | Fuel nozzles |
| US7506511B2 (en) * | 2003-12-23 | 2009-03-24 | Honeywell International Inc. | Reduced exhaust emissions gas turbine engine combustor |
| US7303388B2 (en) * | 2004-07-01 | 2007-12-04 | Air Products And Chemicals, Inc. | Staged combustion system with ignition-assisted fuel lances |
| US7137256B1 (en) * | 2005-02-28 | 2006-11-21 | Peter Stuttaford | Method of operating a combustion system for increased turndown capability |
| JP4476176B2 (ja) * | 2005-06-06 | 2010-06-09 | 三菱重工業株式会社 | ガスタービンの予混合燃焼バーナー |
| JP4486549B2 (ja) * | 2005-06-06 | 2010-06-23 | 三菱重工業株式会社 | ガスタービンの燃焼器 |
| US7836677B2 (en) * | 2006-04-07 | 2010-11-23 | Siemens Energy, Inc. | At least one combustion apparatus and duct structure for a gas turbine engine |
| US7631499B2 (en) * | 2006-08-03 | 2009-12-15 | Siemens Energy, Inc. | Axially staged combustion system for a gas turbine engine |
| FR2906868B1 (fr) * | 2006-10-06 | 2011-11-18 | Snecma | Injecteur de carburant pour chambre de combustion de moteur a turbine a gaz |
| FR2922995B1 (fr) * | 2007-10-31 | 2009-12-04 | Snecma | Chambre de combustion annulaire de moteur a turbine a gaz. |
| US20100192578A1 (en) * | 2009-01-30 | 2010-08-05 | General Electric Company | System and method for suppressing combustion instability in a turbomachine |
| US20100192582A1 (en) | 2009-02-04 | 2010-08-05 | Robert Bland | Combustor nozzle |
| US9068751B2 (en) * | 2010-01-29 | 2015-06-30 | United Technologies Corporation | Gas turbine combustor with staged combustion |
| US9746185B2 (en) * | 2010-02-25 | 2017-08-29 | Siemens Energy, Inc. | Circumferential biasing and profiling of fuel injection in distribution ring |
| US10240533B2 (en) * | 2011-11-22 | 2019-03-26 | United Technologies Corporation | Fuel distribution within a gas turbine engine combustor |
| US9631560B2 (en) * | 2011-11-22 | 2017-04-25 | United Technologies Corporation | Fuel-air mixture distribution for gas turbine engine combustors |
| US9310072B2 (en) | 2012-07-06 | 2016-04-12 | Hamilton Sundstrand Corporation | Non-symmetric arrangement of fuel nozzles in a combustor |
| US20140083111A1 (en) * | 2012-09-25 | 2014-03-27 | United Technologies Corporation | Gas turbine asymmetric fuel nozzle combustor |
| EP3067536A1 (de) * | 2015-03-09 | 2016-09-14 | General Electric Technology GmbH | Verfahren zum Betrieb einer Gasturbine |
| JP6634658B2 (ja) * | 2016-12-20 | 2020-01-22 | 三菱重工業株式会社 | メインノズル、燃焼器及びメインノズルの製造方法 |
| DE102017201771A1 (de) | 2017-02-03 | 2018-08-09 | Siemens Aktiengesellschaft | Umfangsstufungskonzept für eine Brenneranordnung |
| US11181274B2 (en) * | 2017-08-21 | 2021-11-23 | General Electric Company | Combustion system and method for attenuation of combustion dynamics in a gas turbine engine |
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| US2616258A (en) * | 1946-01-09 | 1952-11-04 | Bendix Aviat Corp | Jet engine combustion apparatus, including pilot burner for ignition and vaporization of main fuel supply |
| US4027473A (en) * | 1976-03-05 | 1977-06-07 | United Technologies Corporation | Fuel distribution valve |
| GB1597968A (en) * | 1977-06-10 | 1981-09-16 | Rolls Royce | Fuel burners for gas turbine engines |
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| DE4446945B4 (de) * | 1994-12-28 | 2005-03-17 | Alstom | Gasbetriebener Vormischbrenner |
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| GB9607010D0 (en) * | 1996-04-03 | 1996-06-05 | Rolls Royce Plc | Gas turbine engine combustion equipment |
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| US5899075A (en) * | 1997-03-17 | 1999-05-04 | General Electric Company | Turbine engine combustor with fuel-air mixer |
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| DE19815914B4 (de) * | 1998-04-09 | 2005-05-04 | Alstom | Verteiler |
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| US6161387A (en) * | 1998-10-30 | 2000-12-19 | United Technologies Corporation | Multishear fuel injector |
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| DE10104695B4 (de) * | 2001-02-02 | 2014-11-20 | Alstom Technology Ltd. | Vormischbrenner für eine Gasturbine |
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-
2001
- 2001-12-12 DE DE10160997A patent/DE10160997A1/de not_active Withdrawn
-
2002
- 2002-10-19 EP EP02023428A patent/EP1319895B1/de not_active Expired - Lifetime
- 2002-10-19 DE DE50211162T patent/DE50211162D1/de not_active Expired - Lifetime
- 2002-12-12 US US10/316,936 patent/US6945053B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009003729A1 (de) * | 2007-07-02 | 2009-01-08 | Siemens Aktiengesellschaft | Brenner und verfahren zum betreiben eines brenners |
| CN101688671B (zh) * | 2007-07-02 | 2011-10-12 | 西门子公司 | 燃烧器和燃烧器的工作方法 |
| RU2460018C2 (ru) * | 2007-07-02 | 2012-08-27 | Сименс Акциенгезелльшафт | Горелка и способ эксплуатации горелки |
| US8739543B2 (en) | 2007-07-02 | 2014-06-03 | Siemens Aktiengesellschaft | Burner and method for operating a burner |
| RU2455569C1 (ru) * | 2008-04-01 | 2012-07-10 | Сименс Акциенгезелльшафт | Горелка |
| US8850820B2 (en) | 2008-04-01 | 2014-10-07 | Siemens Aktiengesellschaft | Burner |
| EP2414653B1 (de) * | 2009-04-01 | 2017-03-01 | General Electric Technology GmbH | Gasturbine mit verbessertem teillast-emissionsverhalten |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10160997A1 (de) | 2003-07-03 |
| EP1319895B1 (de) | 2007-11-07 |
| DE50211162D1 (de) | 2007-12-20 |
| US20030106321A1 (en) | 2003-06-12 |
| EP1319895A3 (de) | 2004-01-07 |
| US6945053B2 (en) | 2005-09-20 |
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