EP0743490B1 - Chambre de combustion comportant une multiperforation d'inclinaison axiale et tangentielle variable - Google Patents
Chambre de combustion comportant une multiperforation d'inclinaison axiale et tangentielle variable Download PDFInfo
- Publication number
- EP0743490B1 EP0743490B1 EP96400863A EP96400863A EP0743490B1 EP 0743490 B1 EP0743490 B1 EP 0743490B1 EP 96400863 A EP96400863 A EP 96400863A EP 96400863 A EP96400863 A EP 96400863A EP 0743490 B1 EP0743490 B1 EP 0743490B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- orifices
- zones
- wall
- axial
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- 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
- F23R3/04—Air inlet arrangements
- F23R3/06—Arrangement of apertures along the flame tube
-
- 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
- F23R3/002—Wall structures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/30—Arrangement of components
- F05B2250/32—Arrangement of components according to their shape
- F05B2250/322—Arrangement of components according to their shape tangential
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/20—Heat transfer, e.g. cooling
- F05B2260/202—Heat transfer, e.g. cooling by film cooling
Definitions
- the present invention relates to a combustion chamber, in particular of a turbomachine, which is delimited by at least one wall axial provided with a plurality of through holes constituting a "multi-perforation" intended, in particular, for the passage of a refrigeration of said axial wall, and provided with a plurality of holes for dilution regularly distributed in a transverse plane compared to the general direction of the flow of burnt gases from the combustion, each orifice having a geometric axis inclined at an angle A relative to the normal to said wall, said genometric axis being arranged in a plane containing said normal which makes an angle B by relation to the plan defined by said normal and the general direction flue gas flow.
- the cooling mode by multiperforation is known.
- the orifices are generally staggered with a network of equidistant meshes.
- EP-A-0 486 133 discloses a wall of this type, in which the orifices are inclined in axial planes.
- EP-A-0 492 864 further reveals that the orifices are also inclined by a tangential angle B which generally coincides with the angle of the flue gas vortex along the internal surface of the wall.
- EP-A-0 592 161 shows in FIG. 6 an annular wall multi-perforated combustion chamber in which the orifices are defined by an axial inclination A and a tangential angle B of in such a way that the flow of fresh air introduced into the room creates a protective crown of air which swirls around the flow of burnt gases.
- 3D calculations show that the flow of gases in the combustion chamber is not always longitudinal, but only in some areas it is slightly tilted or even opposed to flow, especially downstream of the dilution holes. It can be produce detachments of cooling air in these areas.
- the purpose of the present invention is to prevent the air from the multiperforation does not take off from the wall.
- the present invention therefore proposes to locally orient the orifices according to the local flow of the burnt gases.
- the wall is subdivided into several zones, in each of which the orifices are defined by inclinations A and angles B respectively having identical values and calculated as a function characteristics of the flue gas flow in each of said zones.
- said wall is subdivided in particular into first zones located respectively downstream of the dilution holes, and in which the orifices are directed against the current of the general direction of the flue gas flow, second and third zones arranged on either side of said first zones with respect to axial planes passing through the corresponding dilution holes, and a fourth zone covering the rest of said wall.
- the holes in the fourth zone have an inclination axial greater than 30. Their angle B is substantially equal to 0 °. The flow of fresh air from these holes licks the surface internal wall in the direction of the axial flow of the burnt gases.
- the orifices made in the first zones diffuse a cooling air against the current of the general direction of flue gas flow.
- Their tilt A is between 0 ° and -60 °, and their angle B is substantially equal to 0 °.
- a second and a third zone are provided, of which the orifices diffuse cooling air towards the passing axial plane through the corresponding dilution hole and in the direction of the general flow of burnt gases.
- the combustion chamber 1 of annular type, has a outer annular axial wall 2 and an annular axial wall interior 3, joined at their upstream ends by a chamber bottom 4 equipped with injection systems 5, and having between their ends downstream an annular opening 6 for the exhaust of the burnt gases G towards a turbine not shown in the drawings.
- the burnt gases G circulate in the internal cavity 7 of the combustion chamber 1 according to an axial general direction represented by the arrow D.
- outer 2 and inner 3 axial walls define with the outer casings 8 and inner 9 of the annular passages 10 and 11 in which circulates cooling air A coming from a compressor not shown in the drawings and located upstream of the combustion 1.
- the two walls 2 and 3 are provided with a plurality of holes for dilution 12 regularly distributed in an axial plane 13 perpendicular to the axis of the turbomachine, and a plurality of through holes 14 constituting a multi-perforation.
- Part of the cooling air A enters axially into the internal cavity 7 through the dilution holes 12 and participates in depletion and cooling of the combustion gases in the dilution zone of combustion chamber 1, while the rest of air A enters the internal cavity 7 through the orifices 14 in order to form a cooling film on internal faces 2a and 3a of the walls axial 2 and 3.
- Figure 2 shows the gas velocity diagram at vicinity of the internal face 2a of the external wall 2, in the region of two dilution holes 12a and 12b, this diagram having been obtained by 3D calculations.
- This diagram shows that in zone 15 which separates the two dilution holes 12a and 12b, the gases flow in the direction D.
- zones 16 located immediately downstream of the dilution 12a and 12b the gases flow on the contrary towards the holes of dilution 12a and 12b, i.e. in a direction globally opposite to direction D.
- each zone 16 On either side of each zone 16, the gases flow in a direction inclined towards the axial plane 18 passing through the dilution hole corresponding, and generally directed in the direction of flow general of burnt gases D.
- the burnt gases circulate according to direction D.
- the 3D temperature diagram in the vicinity of the dilution also shows significant differences depending on the area.
- the region of the wall 2 is subdivided and 3 which comprises the orifices 14 in several zones, in each of which, the angles of inclination A of the axes 30 of the orifices 14 by compared to the normal 31 to the wall are identical as well as the angles B planes 32 containing said axes 30 and the normals 31 relative to to the axial planes 33 containing said normal.
- FIG 3 there is shown an axial wall portion 34 comprising two dilution holes 12a and 12b.
- the arrow D represents the general direction of the flue gas flow in the combustion 1.
- References 16a and 16b represent first zones in which the burnt gases flow against the current.
- the burnt gases In the second zones 17a and 17b situated to the left of the axial planes 18a and 18b, the burnt gases generally flow in the direction of the arrows 19.
- the gases In the third zones 19a and 19b located to the right of axial plane 18a and 18b, the gases flow in the direction of the arrows 20.
- the gases flow generally in the direction of the arrow D.
- the orifices 14 formed in the fourth zone 21 are defined by an inclination A 4 greater than 30 ° and an angle B substantially equal to 0 °.
- the cooling air diffused by these orifices 14 enters the combustion chamber 1, in the general flow direction D of the gases, but with an inclination A 4 .
- the orifices 14 formed in the first zone 16a are inclined so as to allow a diffusion of cooling air against the current of the general direction D.
- the axes 30 of these orifices 14 form an angle A 1 with the normals 31 which is between -60 ° and 0 °.
- the axes 30 of these orifices 14 are also parallel to the axial plane 18a passing through the axis 35 of the dilution hole 12a.
- FIG 5 there is shown a small part 36 of the outer wall 2 at a third area 19b.
- the orifices are drilled at an inclination A 3 relative to the normal 31 and in a plane making an angle B 3 with respect to the direction of the main flow D.
- the angle B 3 is calculated in function of the average direction of local gas flow in the third zone 19b.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
Claims (6)
- Chambre de combustion, notamment de turbomachine, qui est délimitée par au moins une paroi axiale (2, 3) munie d'une pluralité d'orifices (14) traversant constituant une "multiperforation" destinée, notamment, au passage d'un fluide de réfrigération (A) de ladite paroi axiale (2, 3), et munie d'une pluralité de trous de dilution (12) régulièrement répartis dans un plan transversal (13) par rapport à la direction générale (D) de l'écoulement des gaz brûlés (G) provenant de la combustion, chaque orifice (14) ayant un axe géométrique (30) incliné d'un angle A par rapport à la normale (31) à ladite paroi (2, 3) ledit axe géométrique (30) étant disposé dans un plan (32) contenant ladite normale (31) qui fait un angle B par rapport au plan (33) défini par ladite normale et la direction générale (D) d'écoulement des gaz brûlés, dans laquelle
la paroi (2, 3) est subdivisée en plusieurs zones (16a, 16b, 17a, 17b, 19a, 19b, 21), dans chacune desquelles les orifices (14) sont définis par des inclinaisons A et des angles B ayant respectivement des valeurs identiques et calculées en fonction de l'écoulement local des gaz brûlés (6) dans chacune desdites zones,
caractérisée par le fait que ladite paroi (2, 3) est subdivisée en des premières zones (16a, 16b) situées respectivement en aval des trous de dilution (12a, 12b) et dans lesquelles les orifices (14) sont dirigés à contre-courant de la direction générale (D) de l'écoulement des gaz brûlés (G), des deuxièmes (17a, 17b) et troisièmes zones disposées de part et d'autre desdites premières zones (16a, 16b) par rapport aux plan axiaux (18a, 18b) passant par les trous de dilution (12a, 12b) correspondants, et une quatrième zone (21) recouvrant le reste de ladite paroi (2, 3). - Chambre selon la revendication 1, caractérisée par le fait que les orifices (14) ménagés dans la quatrième zone (21) sont définis par une inclinaison A supérieure à 30°.
- Chambre selon la revendication 2, caractérisée par le fait que les orifices (14) ménagés dans la quatrième zone (21) sont définis par un angle B sensiblement égal à 0°.
- Chambre selon la revendication 1, caractérisée par le fait que les orifices (14) ménagés dans les premières zones (16a, 16b) sont définis par une inclinaison A comprise entre 0° et -60°.
- Chambre selon la revendication 4, caractérisée par le fait que les orifices (14) ménagés dans les premières zones (16a, 16b) sont définis par un angle B sensiblement égal à 0°.
- Chambre selon la revendication 2, caractérisée par le fait que les orifices (14) ménagés dans les deuxièmes zones (17a, 17b) sont définis par des angles B ayant des valeurs opposées aux angles B définissant les orifices (14) ménagés dans les troisièmes zones (19a, 19b).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9504968A FR2733582B1 (fr) | 1995-04-26 | 1995-04-26 | Chambre de combustion comportant une multiperforation d'inclinaison axiale et tangentielle variable |
FR9504968 | 1995-04-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0743490A1 EP0743490A1 (fr) | 1996-11-20 |
EP0743490B1 true EP0743490B1 (fr) | 1999-06-09 |
Family
ID=9478445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96400863A Expired - Lifetime EP0743490B1 (fr) | 1995-04-26 | 1996-04-24 | Chambre de combustion comportant une multiperforation d'inclinaison axiale et tangentielle variable |
Country Status (5)
Country | Link |
---|---|
US (1) | US5775108A (fr) |
EP (1) | EP0743490B1 (fr) |
JP (1) | JP3302559B2 (fr) |
DE (1) | DE69602804T2 (fr) |
FR (1) | FR2733582B1 (fr) |
Families Citing this family (41)
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FR2770283B1 (fr) * | 1997-10-29 | 1999-11-19 | Snecma | Chambre de combustion pour turbomachine |
US6145319A (en) * | 1998-07-16 | 2000-11-14 | General Electric Company | Transitional multihole combustion liner |
US6408629B1 (en) | 2000-10-03 | 2002-06-25 | General Electric Company | Combustor liner having preferentially angled cooling holes |
US6620457B2 (en) * | 2001-07-13 | 2003-09-16 | General Electric Company | Method for thermal barrier coating and a liner made using said method |
FR2856468B1 (fr) * | 2003-06-17 | 2007-11-23 | Snecma Moteurs | Chambre de combustion annulaire de turbomachine |
FR2856467B1 (fr) * | 2003-06-18 | 2005-09-02 | Snecma Moteurs | Chambre de combustion annulaire de turbomachine |
US7146816B2 (en) * | 2004-08-16 | 2006-12-12 | Honeywell International, Inc. | Effusion momentum control |
US20060037323A1 (en) * | 2004-08-20 | 2006-02-23 | Honeywell International Inc., | Film effectiveness enhancement using tangential effusion |
US7464554B2 (en) * | 2004-09-09 | 2008-12-16 | United Technologies Corporation | Gas turbine combustor heat shield panel or exhaust panel including a cooling device |
US7614235B2 (en) * | 2005-03-01 | 2009-11-10 | United Technologies Corporation | Combustor cooling hole pattern |
FR2892180B1 (fr) * | 2005-10-18 | 2008-02-01 | Snecma Sa | Amelioration des perfomances d'une chambre de combustion par multiperforation des parois |
US7631502B2 (en) * | 2005-12-14 | 2009-12-15 | United Technologies Corporation | Local cooling hole pattern |
US7546737B2 (en) * | 2006-01-24 | 2009-06-16 | Honeywell International Inc. | Segmented effusion cooled gas turbine engine combustor |
FR2899315B1 (fr) * | 2006-03-30 | 2012-09-28 | Snecma | Configuration d'ouvertures de dilution dans une paroi de chambre de combustion de turbomachine |
US7887322B2 (en) * | 2006-09-12 | 2011-02-15 | General Electric Company | Mixing hole arrangement and method for improving homogeneity of an air and fuel mixture in a combustor |
US7942006B2 (en) * | 2007-03-26 | 2011-05-17 | Honeywell International Inc. | Combustors and combustion systems for gas turbine engines |
US8091367B2 (en) * | 2008-09-26 | 2012-01-10 | Pratt & Whitney Canada Corp. | Combustor with improved cooling holes arrangement |
FR2941287B1 (fr) * | 2009-01-19 | 2011-03-25 | Snecma | Paroi de chambre de combustion de turbomachine a une seule rangee annulaire d'orifices d'entree d'air primaire et de dilution |
US8640464B2 (en) * | 2009-02-23 | 2014-02-04 | Williams International Co., L.L.C. | Combustion system |
FR2955374B1 (fr) * | 2010-01-15 | 2012-05-18 | Turbomeca | Chambre de combustion multi-percee a ecoulements tangentiels contre giratoires |
FR2974162B1 (fr) * | 2011-04-14 | 2018-04-13 | Safran Aircraft Engines | Virole de tube a flamme dans une chambre de combustion de turbomachine |
FR2979416B1 (fr) * | 2011-08-26 | 2013-09-20 | Turbomeca | Paroi de chambre de combustion |
EP3039340B1 (fr) * | 2013-08-30 | 2018-11-28 | United Technologies Corporation | Passages de dilution à tourbillonnement à section contractée pour chambre de combustion de moteur à turbine à gaz |
US9453424B2 (en) * | 2013-10-21 | 2016-09-27 | Siemens Energy, Inc. | Reverse bulk flow effusion cooling |
FR3013996B1 (fr) | 2013-12-02 | 2017-04-28 | Office National Detudes Et De Rech Aerospatiales Onera | Procede de reparation locale de barrieres thermiques |
FR3014115B1 (fr) | 2013-12-02 | 2017-04-28 | Office National Detudes Et De Rech Aerospatiales Onera | Procede et systeme de depot d'oxyde sur un composant poreux |
WO2015103357A1 (fr) | 2013-12-31 | 2015-07-09 | United Technologies Corporation | Ensemble paroi de moteur à turbine à gaz à architecture d'écoulement améliorée |
EP3099976B1 (fr) | 2014-01-30 | 2019-03-13 | United Technologies Corporation | Flux de refroidissement pour un panneau principal dans une chambre de combustion de moteur à turbine à gaz |
US20160258623A1 (en) * | 2015-03-05 | 2016-09-08 | United Technologies Corporation | Combustor and heat shield configurations for a gas turbine engine |
DE102016201452A1 (de) | 2016-02-01 | 2017-08-03 | Rolls-Royce Deutschland Ltd & Co Kg | Gasturbinenbrennkammer mit Wandkonturierung |
JP6026028B1 (ja) * | 2016-03-10 | 2016-11-16 | 三菱日立パワーシステムズ株式会社 | 燃焼器用パネル、燃焼器、燃焼装置、ガスタービン、及び燃焼器用パネルの冷却方法 |
US10823410B2 (en) | 2016-10-26 | 2020-11-03 | Raytheon Technologies Corporation | Cast combustor liner panel radius for gas turbine engine combustor |
US10830448B2 (en) | 2016-10-26 | 2020-11-10 | Raytheon Technologies Corporation | Combustor liner panel with a multiple of heat transfer augmentors for a gas turbine engine combustor |
US10670269B2 (en) * | 2016-10-26 | 2020-06-02 | Raytheon Technologies Corporation | Cast combustor liner panel gating feature for a gas turbine engine combustor |
US10669939B2 (en) | 2016-10-26 | 2020-06-02 | Raytheon Technologies Corporation | Combustor seal for a gas turbine engine combustor |
US10935243B2 (en) | 2016-11-30 | 2021-03-02 | Raytheon Technologies Corporation | Regulated combustor liner panel for a gas turbine engine combustor |
US11015529B2 (en) | 2016-12-23 | 2021-05-25 | General Electric Company | Feature based cooling using in wall contoured cooling passage |
US10480327B2 (en) | 2017-01-03 | 2019-11-19 | General Electric Company | Components having channels for impingement cooling |
US10753283B2 (en) | 2017-03-20 | 2020-08-25 | Pratt & Whitney Canada Corp. | Combustor heat shield cooling hole arrangement |
US11029027B2 (en) | 2018-10-03 | 2021-06-08 | Raytheon Technologies Corporation | Dilution/effusion hole pattern for thick combustor panels |
CN113251441B (zh) * | 2021-06-28 | 2022-03-25 | 南京航空航天大学 | 一种新型航天发动机用多斜孔板椭球摆冷却结构 |
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FR512723A (fr) * | 1920-01-05 | 1921-01-29 | Rene Lucien Joseph Pierrel | Générateur de gaz sous pression par combustion continue en vase clos |
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DE2607214A1 (de) * | 1976-02-23 | 1977-09-01 | Volkswagenwerk Ag | Brennkammer fuer gasturbinen |
FR2410138A2 (fr) * | 1977-11-29 | 1979-06-22 | Snecma | Perfectionnements aux chambres de combustion pour moteur a turbine a gaz |
CH634128A5 (de) * | 1978-06-13 | 1983-01-14 | Bbc Brown Boveri & Cie | Kuehlvorrichtung an einer wand. |
US4790140A (en) * | 1985-01-18 | 1988-12-13 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Liner cooling construction for gas turbine combustor or the like |
DE3711751A1 (de) * | 1987-04-07 | 1988-10-20 | Bergwerksverband Gmbh | Gleichstromdatenuebertragungseinrichtung |
GB2221979B (en) * | 1988-08-17 | 1992-03-25 | Rolls Royce Plc | A combustion chamber for a gas turbine engine |
US5329773A (en) * | 1989-08-31 | 1994-07-19 | Alliedsignal Inc. | Turbine combustor cooling system |
US5181379A (en) * | 1990-11-15 | 1993-01-26 | General Electric Company | Gas turbine engine multi-hole film cooled combustor liner and method of manufacture |
CA2056592A1 (fr) * | 1990-12-21 | 1992-06-22 | Phillip D. Napoli | Chemise de chambre de combustion a refroidissement par gaine d'air a trous multiples avec demarreur a gaine d'air rainuree |
US5241827A (en) * | 1991-05-03 | 1993-09-07 | General Electric Company | Multi-hole film cooled combuster linear with differential cooling |
US5307637A (en) * | 1992-07-09 | 1994-05-03 | General Electric Company | Angled multi-hole film cooled single wall combustor dome plate |
GB9220937D0 (en) * | 1992-10-06 | 1992-11-18 | Rolls Royce Plc | Gas turbine engine combustor |
US5323602A (en) * | 1993-05-06 | 1994-06-28 | Williams International Corporation | Fuel/air distribution and effusion cooling system for a turbine engine combustor burner |
FR2714152B1 (fr) * | 1993-12-22 | 1996-01-19 | Snecma | Dispositif de fixation d'une tuile de protection thermique dans une chambre de combustion. |
-
1995
- 1995-04-26 FR FR9504968A patent/FR2733582B1/fr not_active Expired - Fee Related
-
1996
- 1996-04-17 US US08/633,314 patent/US5775108A/en not_active Expired - Lifetime
- 1996-04-24 DE DE69602804T patent/DE69602804T2/de not_active Expired - Lifetime
- 1996-04-24 EP EP96400863A patent/EP0743490B1/fr not_active Expired - Lifetime
- 1996-04-25 JP JP10573896A patent/JP3302559B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69602804D1 (de) | 1999-07-15 |
JPH08312960A (ja) | 1996-11-26 |
FR2733582B1 (fr) | 1997-06-06 |
DE69602804T2 (de) | 2000-01-27 |
EP0743490A1 (fr) | 1996-11-20 |
US5775108A (en) | 1998-07-07 |
FR2733582A1 (fr) | 1996-10-31 |
JP3302559B2 (ja) | 2002-07-15 |
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