EP0689007B1 - Refroidissement de l'injecteur de décollage d'une chambre de combustion à deux têtes - Google Patents
Refroidissement de l'injecteur de décollage d'une chambre de combustion à deux têtes Download PDFInfo
- Publication number
- EP0689007B1 EP0689007B1 EP95401466A EP95401466A EP0689007B1 EP 0689007 B1 EP0689007 B1 EP 0689007B1 EP 95401466 A EP95401466 A EP 95401466A EP 95401466 A EP95401466 A EP 95401466A EP 0689007 B1 EP0689007 B1 EP 0689007B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injector
- fuel
- take
- pipe
- double
- 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
- 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
Definitions
- the present invention relates to the cooling of the injector of take-off from a two-head combustion chamber.
- the idle head In two-head combustion chambers, the idle head is permanently supplied with fuel, whatever the speed of the turbomachine.
- the take-off head is supplied with fuel only beyond a determined minimum speed which corresponds to approximately 20% of the nominal speed. In idling phase it is therefore necessary to cool the injector properly take-off and in particular the nozzle of the injector which includes the injection orifices of fuel, in order to avoid any problem of coking of the fuel circuits and any problem with fuel vapor plug formation.
- the CFM56-5B turbojet a solution of cooling which consists in circulating the flow of fuel which feeds the idle injector in the take-off injector.
- This fuel circulation this take-off injector cools in passing, thus avoiding coking.
- the injectors of the CFM56-5B are aeromechanical type with double flow per module.
- the idle injector fuel supply system has two tubes coaxial, and the take-off injector is supplied by a third tube placed at the center of the first two and communicating with the interior of the room combustion through the injection orifices provided in the nozzle. These holes are thus arranged at a relatively great distance from the passage between the ends of the first two tubes.
- the object of the present invention is to improve the cooling of the take-off injector and in particular its tip.
- the present invention therefore relates to the improvement a double injector fitted to a combustion chamber for two heads of a turbomachine, said double injector comprising a take-off injector comprising a cooling device and furthermore an injector which is supplied with fuel by a first circuit, said injector takeoff having a nozzle provided with fuel injection ports which are fueled by a second circuit separate from the first circuit, double injector in which the first fuel circuit has a first duct which directs the entire flow of fuel supplying said idle injector to the nozzle of the takeoff and a second annular duct which is coaxial with the first duct and which returns said fuel flow to the idle injector, as known from WO-A-94/08179.
- Reference 1 represents a double injector intended for supplying a double-headed annular combustion chamber of a turbomachine, which comprises a head 2 for its attachment to the outer casing of the turbomachine, an injector takeoff 3, away from the head 2 and an idle injector 4 or pilot disposed at mid-distance between the head 2 and the take-off injector 3.
- the take-off injector 3 has at its end a take-off nozzle 5 comprising orifices 6 for inject, into the combustion chamber, a flow of fuel introduced into the head 2 through a feed port 7.
- the idle injector 4 also includes an idle nozzle 8 supplied with a fuel flow introduced into the head 2 through a supply port 9.
- the take-off nozzle 5 comprises a nozzle 10 mounted in the bore internal 11 of a socket 12, this socket 12 being itself mounted at the end of the hollow body 13 which forms the external wall of the double injector 1.
- the end piece 10, of axis 14, has a blind axial bore 15 which communicates with the head orifice 9 by a first tube 16, and an annular cavity 17 which communicates with the injection orifices 6.
- the annular cavity 17 surrounds the blind bore 15 and is separated from the latter by a cylindrical sleeve 18 to the upstream end of which is fixed the end of the first tube 16.
- This second tube 19 surrounds the first tube 16.
- An annular space 20 is delimited by the second tube 19, on the one hand, and the sleeve and the hollow body 13, on the other hand. Channels 21 are provided in the end piece 10 in order to put in communication with the blind bore 15 with the annular space 20.
- the annular space 20 extends from the nozzle 3 to the head 2 of the double injector 1, where it is in permanent communication with the supply channel 22 of the idle head 4. It is externally delimited by a third tube 23 of which the downstream end 24 is tightly fixed to the bush 12.
- the idle injector 4 supply circuit includes the orifice inlet 9, the internal passage of the first tube 16, the blind bore 15, the channels 21, the annular space 20 and the supply channel 22. Thus, all the flow of fuel Q1 which feeds through the idle injector 4 passes through the channels 21 located in the nozzle 10.
- the take-off injector 2 supply circuit includes the orifice inlet 7, the annular space 25 delimited by the first tube 16 and the second tube 19, the annular cavity 17 and the injection orifices 6.
- the orifices injection 6 comprise, from the annular cavity 17, a first portion 6a axial and a second portion 6b inclined radially and tangentially which opens into the combustion chamber.
- These injection ports 6 are at number six in the example shown in the drawings, but this number could be different from six.
- the nozzle 10 which constitutes the most hot of the double injector 1 and therefore the part most sensitive to the phenomena of coking, has a large heat exchange surface with all of the fuel flow Q1 of the idle injector 4. This leads to a reduction significant risk of coking residual fuel in the fuel system take-off module by decreasing the temperatures of the circuit circuit walls lift-off. Thermal calculations have shown a substantial gain of 68% over the surface of the walls at risk, in terms of coking, that is to say with a temperature above 200 ° C.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims (1)
- Double injecteur (1) d'une chambre de combustion à deux têtes d'une turbomachine, ledit double injecteur (1) comportant un injecteur de décollage (3) comprenant un dispositif de refroidissement et en outre un injecteur de ralenti (4) qui est alimenté en carburant par un premier circuit, ledit injecteur de décollage (3) présentant un embout (10) pourvu d'orifices d'injection (6) de carburant qui sont alimentés en carburant par un deuxième circuit séparé du premier circuit,que le premier circuit de carburant comportant un premier conduit (16, 15) qui dirige la totalité du débit de carburant (Q1) alimentant ledit injecteur de ralenti (4) jusqu'à l'embout (10) de l'injecteur de décollage (3) et un deuxième conduit (20) annulaire qui est coaxial au premier conduit (16) et qui retourne ledit débit de carburant (Q1) vers l'injecteur de ralenti (4),par le fait que dans l'embout (10) sont ménagés des canaux (21) permettant le passage du carburant entre le premier conduit (16) et le deuxième conduit (20), lesdits canaux (21) alternant avec les orifices d'injection (6) dudit embout (10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9407624A FR2721694B1 (fr) | 1994-06-22 | 1994-06-22 | Refroidissement de l'injecteur de décollage d'une chambre de combustion à deux têtes. |
FR9407624 | 1994-06-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0689007A1 EP0689007A1 (fr) | 1995-12-27 |
EP0689007B1 true EP0689007B1 (fr) | 1998-11-11 |
Family
ID=9464487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95401466A Expired - Lifetime EP0689007B1 (fr) | 1994-06-22 | 1995-06-21 | Refroidissement de l'injecteur de décollage d'une chambre de combustion à deux têtes |
Country Status (5)
Country | Link |
---|---|
US (1) | US5577386A (fr) |
EP (1) | EP0689007B1 (fr) |
JP (1) | JP2992456B2 (fr) |
DE (1) | DE69505895T2 (fr) |
FR (1) | FR2721694B1 (fr) |
Families Citing this family (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19645961A1 (de) * | 1996-11-07 | 1998-05-14 | Bmw Rolls Royce Gmbh | Kraftstoffeinspritzvorrichtung für eine Gasturbinen-Brennkammer mit einer flüssigkeitsgekühlten Einspritzdüse |
FR2770283B1 (fr) * | 1997-10-29 | 1999-11-19 | Snecma | Chambre de combustion pour turbomachine |
US6072172A (en) * | 1997-12-22 | 2000-06-06 | Bausch & Lomb Incorporated | Method and apparatus for detecting packages in carton |
US6082113A (en) * | 1998-05-22 | 2000-07-04 | Pratt & Whitney Canada Corp. | Gas turbine fuel injector |
US6289676B1 (en) | 1998-06-26 | 2001-09-18 | Pratt & Whitney Canada Corp. | Simplex and duplex injector having primary and secondary annular lud channels and primary and secondary lud nozzles |
US6357237B1 (en) * | 1998-10-09 | 2002-03-19 | General Electric Company | Fuel injection assembly for gas turbine engine combustor |
DE69932318T2 (de) * | 1998-10-09 | 2007-07-05 | General Electric Co. | Brennstoffeinspritzvorrichtung für eine gasturbinenbrennkammer |
US6321541B1 (en) * | 1999-04-01 | 2001-11-27 | Parker-Hannifin Corporation | Multi-circuit multi-injection point atomizer |
US6711898B2 (en) | 1999-04-01 | 2004-03-30 | Parker-Hannifin Corporation | Fuel manifold block and ring with macrolaminate layers |
US6256995B1 (en) | 1999-11-29 | 2001-07-10 | Pratt & Whitney Canada Corp. | Simple low cost fuel nozzle support |
US6351948B1 (en) * | 1999-12-02 | 2002-03-05 | Woodward Fst, Inc. | Gas turbine engine fuel injector |
FR2817017B1 (fr) * | 2000-11-21 | 2003-03-07 | Snecma Moteurs | Refroidissement integral des injecteurs de decollage d'une chambre de combustion a deux tetes |
US6718770B2 (en) * | 2002-06-04 | 2004-04-13 | General Electric Company | Fuel injector laminated fuel strip |
US7061077B2 (en) * | 2002-08-30 | 2006-06-13 | Fairchild Semiconductor Corporation | Substrate based unmolded package including lead frame structure and semiconductor die |
US6898926B2 (en) * | 2003-01-31 | 2005-05-31 | General Electric Company | Cooled purging fuel injectors |
US6959535B2 (en) * | 2003-01-31 | 2005-11-01 | General Electric Company | Differential pressure induced purging fuel injectors |
US6898938B2 (en) | 2003-04-24 | 2005-05-31 | General Electric Company | Differential pressure induced purging fuel injector with asymmetric cyclone |
DE10324985B4 (de) * | 2003-06-03 | 2005-06-16 | Man B & W Diesel Ag | Kraftstoffeinspritzdüse |
US7104464B2 (en) | 2003-12-25 | 2006-09-12 | Kawasaki Jukogyo Kabushiki Kaisha | Fuel supply method and fuel supply system |
US7654088B2 (en) * | 2004-02-27 | 2010-02-02 | Pratt & Whitney Canada Corp. | Dual conduit fuel manifold for gas turbine engine |
JP2008520063A (ja) | 2004-11-09 | 2008-06-12 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 低温での有機蒸発材料の徐放が可能である蛍光ランプ |
US20070033945A1 (en) * | 2005-08-10 | 2007-02-15 | Goldmeer Jeffrey S | Gas turbine system and method of operation |
US20070119179A1 (en) * | 2005-11-30 | 2007-05-31 | Haynes Joel M | Opposed flow combustor |
US20070151251A1 (en) * | 2006-01-03 | 2007-07-05 | Haynes Joel M | Counterflow injection mechanism having coaxial fuel-air passages |
US8387390B2 (en) | 2006-01-03 | 2013-03-05 | General Electric Company | Gas turbine combustor having counterflow injection mechanism |
FR2896030B1 (fr) * | 2006-01-09 | 2008-04-18 | Snecma Sa | Refroidissement d'un dispositif d'injection multimode pour chambre de combustion, notamment d'un turboreacteur |
US8056326B2 (en) | 2007-05-31 | 2011-11-15 | Caterpillar Inc. | Regeneration device having cooled injection housing |
FR2920525B1 (fr) * | 2007-08-31 | 2014-06-13 | Snecma | Separateur pour alimentation de l'air de refroidissement d'une turbine |
US8151716B2 (en) * | 2007-09-13 | 2012-04-10 | General Electric Company | Feed injector cooling apparatus and method of assembly |
US7992390B2 (en) * | 2008-09-23 | 2011-08-09 | Pratt & Whitney Canada Corp. | External rigid fuel manifold |
US8393154B2 (en) * | 2009-02-12 | 2013-03-12 | Pratt & Whitney Canada Corp. | Fuel delivery system with reduced heat transfer to fuel manifold seal |
US9221704B2 (en) * | 2009-06-08 | 2015-12-29 | Air Products And Chemicals, Inc. | Through-port oxy-fuel burner |
EP2501483B1 (fr) * | 2009-11-16 | 2015-08-19 | Bell Helicopter Textron Inc. | Buse d'injection de fluide double trajet |
US8205598B2 (en) * | 2010-02-08 | 2012-06-26 | International Engine Intellectual Property Company, Llc | Fuel injector nozzle |
EP2362142A1 (fr) * | 2010-02-19 | 2011-08-31 | Siemens Aktiengesellschaft | Agencement de brûleur |
US8590311B2 (en) | 2010-04-28 | 2013-11-26 | General Electric Company | Pocketed air and fuel mixing tube |
US20110265485A1 (en) * | 2010-04-30 | 2011-11-03 | General Electric Company | Fluid cooled injection nozzle assembly for a gas turbomachine |
DE112011102685T5 (de) | 2010-08-11 | 2013-06-20 | Cummins Intellectual Properties, Inc. | Motor mit Injektormontage- und Kühlanordnung |
EP2520858A1 (fr) * | 2011-05-03 | 2012-11-07 | Siemens Aktiengesellschaft | Lance de combustible pilote refroidie par le combustible et utilisable pour un turbine à gaz |
US9188063B2 (en) | 2011-11-03 | 2015-11-17 | Delavan Inc. | Injectors for multipoint injection |
US9400104B2 (en) * | 2012-09-28 | 2016-07-26 | United Technologies Corporation | Flow modifier for combustor fuel nozzle tip |
US20150292737A1 (en) * | 2012-10-11 | 2015-10-15 | Ecomb Ab (Publ) | Supply device for a combustion chamber |
US10400674B2 (en) * | 2014-05-09 | 2019-09-03 | United Technologies Corporation | Cooled fuel injector system for a gas turbine engine and method for operating the same |
US9897321B2 (en) | 2015-03-31 | 2018-02-20 | Delavan Inc. | Fuel nozzles |
US10385809B2 (en) * | 2015-03-31 | 2019-08-20 | Delavan Inc. | Fuel nozzles |
US9989257B2 (en) * | 2015-06-24 | 2018-06-05 | Delavan Inc | Cooling in staged fuel systems |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB819042A (en) * | 1956-09-27 | 1959-08-26 | Dowty Fuel Syst Ltd | Improvements relating to liquid fuel burners |
GB2036296B (en) * | 1978-11-20 | 1982-12-01 | Rolls Royce | Gas turbine |
US5269468A (en) * | 1992-06-22 | 1993-12-14 | General Electric Company | Fuel nozzle |
US5423178A (en) * | 1992-09-28 | 1995-06-13 | Parker-Hannifin Corporation | Multiple passage cooling circuit method and device for gas turbine engine fuel nozzle |
FR2712379B1 (fr) * | 1993-11-10 | 1995-12-29 | Snecma | Chambre de combustion pour turbomachine munie d'un séparateur des gaz. |
-
1994
- 1994-06-22 FR FR9407624A patent/FR2721694B1/fr not_active Expired - Fee Related
-
1995
- 1995-06-20 US US08/493,206 patent/US5577386A/en not_active Expired - Lifetime
- 1995-06-21 EP EP95401466A patent/EP0689007B1/fr not_active Expired - Lifetime
- 1995-06-21 DE DE69505895T patent/DE69505895T2/de not_active Expired - Lifetime
- 1995-06-22 JP JP7156099A patent/JP2992456B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2992456B2 (ja) | 1999-12-20 |
FR2721694A1 (fr) | 1995-12-29 |
DE69505895T2 (de) | 1999-06-02 |
US5577386A (en) | 1996-11-26 |
EP0689007A1 (fr) | 1995-12-27 |
FR2721694B1 (fr) | 1996-07-19 |
DE69505895D1 (de) | 1998-12-17 |
JPH0814063A (ja) | 1996-01-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0689007B1 (fr) | Refroidissement de l'injecteur de décollage d'une chambre de combustion à deux têtes | |
EP1770332B1 (fr) | Dispositif de guidage d'un élément dans un orifice d'une paroi de chambre de combustion de turbomachine | |
EP1770333B1 (fr) | Bras d'injecteur anti-cokéfaction | |
CA2776843C (fr) | Injecteur multi-point pour une chambre de combustion de turbomachine | |
EP0182687A1 (fr) | Système d'injection à géométrie variable | |
FR2925146A1 (fr) | Systeme d'injection d'un melange d'air et de carburant dans une chambre de combustion de turbomachine | |
EP1593911A1 (fr) | Dispositif d'alimentation en air et en carburant d'un anneau-brûleur dans une chambre de postcombustion | |
EP0689006B1 (fr) | Procédé et dispositif pour alimenter en carburant et refroidir l'injecteur de décollage d'une chambre de combustion à deux têtes | |
CA2776848C (fr) | Dispositif d'injection multi-point pour une chambre de combustion de turbomachine | |
EP3530908A1 (fr) | Chambre de combustion comportant deux types d'injecteurs dans lesquels les organes d'étanchéité ont un seuil d'ouverture différent | |
EP3052861B1 (fr) | Injecteur de carburant dans une turbomachine | |
EP1621817B1 (fr) | Chambre de post-combustion à allumage sécurisé | |
FR2996286A1 (fr) | Dispositif d'injection pour une chambre de combustion de turbomachine | |
FR2942640A1 (fr) | Chambre de post-combustion pour turbomachine | |
EP2671025B1 (fr) | Dispositif d'injection pour une chambre de combustion de turbomachine | |
FR2958012A1 (fr) | Chambre de combustion de turbomachine | |
EP1155781A1 (fr) | Lance thermo-abrasive | |
FR2474648A1 (fr) | Generateur de vapeur a haut rendement, applicable notamment a l'alimentation d'une turbine a vapeur, au chauffage et aux etuves | |
FR2735214A1 (fr) | Systeme d'injection aerodynamique alimente par un carburant sous forte pression |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19950708 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
|
17Q | First examination report despatched |
Effective date: 19971015 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19981117 |
|
REF | Corresponds to: |
Ref document number: 69505895 Country of ref document: DE Date of ref document: 19981217 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20120517 AND 20120523 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 69505895 Country of ref document: DE Representative=s name: MITSCHERLICH & PARTNER PATENT- UND RECHTSANWAE, DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 69505895 Country of ref document: DE Representative=s name: MITSCHERLICH, PATENT- UND RECHTSANWAELTE PARTM, DE Effective date: 20121005 Ref country code: DE Ref legal event code: R082 Ref document number: 69505895 Country of ref document: DE Representative=s name: MITSCHERLICH, PATENT- UND RECHTSANWAELTE, PART, DE Effective date: 20121005 Ref country code: DE Ref legal event code: R082 Ref document number: 69505895 Country of ref document: DE Representative=s name: MITSCHERLICH & PARTNER PATENT- UND RECHTSANWAE, DE Effective date: 20121005 Ref country code: DE Ref legal event code: R081 Ref document number: 69505895 Country of ref document: DE Owner name: SNECMA, FR Free format text: FORMER OWNER: HISPANO SUIZA, COLOMBRS CEDEX, FR Effective date: 20121005 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20130523 Year of fee payment: 19 Ref country code: GB Payment date: 20130527 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20140606 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69505895 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20140621 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69505895 Country of ref document: DE Effective date: 20150101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140621 |