WO2021014074A1 - Injecteur de carburant a circuit de purge pour une turbomachine d'aeronef - Google Patents
Injecteur de carburant a circuit de purge pour une turbomachine d'aeronef Download PDFInfo
- Publication number
- WO2021014074A1 WO2021014074A1 PCT/FR2020/051274 FR2020051274W WO2021014074A1 WO 2021014074 A1 WO2021014074 A1 WO 2021014074A1 FR 2020051274 W FR2020051274 W FR 2020051274W WO 2021014074 A1 WO2021014074 A1 WO 2021014074A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- injector
- axis
- elongation
- fuel
- fins
- Prior art date
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
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/10—Air inlet arrangements for primary air
- F23R3/12—Air inlet arrangements for primary air inducing a vortex
- F23R3/14—Air inlet arrangements for primary air inducing a vortex by using swirl vanes
-
- 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
Definitions
- TITLE FUEL INJECTOR WITH PURGE CIRCUIT FOR
- the present invention relates to a fuel injector with a purge circuit for an aircraft turbomachine.
- the state of the art includes in particular the documents FR-A1 -2 971 039, FR AI -3 013 805 and FR-A1 -3 067 792.
- a mixture of compressed air and the appropriate fuel is usually injected into a turbomachine combustion chamber using one or more injectors.
- the injectors are for example attached to a housing and pass through openings in a chamber wall for the ejection of fuel inside the chamber, in the form of a jet of fuel droplets.
- a fuel injector 10 for example with a flat jet, such as that shown in Figures 1 to 5, conventionally comprises a body 12 of generally elongated shape having an axis of elongation A.
- the body 12 comprises a first longitudinal end 14 of fuel supply and a second longitudinal end 16 for ejecting a flat jet of fuel.
- the body 12 is tubular and comprises an internal bore 18 which opens out axially at the level of the end 14 and which is connected to a nozzle 20 for projecting the fuel jet at the level of the end 16.
- the body may include an air cooling circuit coaxial with the fuel circuit, as described in documents DE-10.2017. 200106- A1, DE-10.2013.208069-A1 and JP-2003.247425 -A.
- the body 12 may also include at least one integrated air purge circuit which comprises an internal cavity 22 connected on the one hand to air inlet orifices 24 located on the body and to at least one outlet 26 of the body. air located at level of end 16, as described in document EP-2.244.014 -A2
- This air circuit has only a purge function and the present invention provides an improvement in this technology which makes it possible to optimize the operation of a fuel injector in a simple, efficient and economical manner.
- the present invention provides a fuel injector for an aircraft turbomachine, comprising a tubular body having an axis of elongation A and comprising a first longitudinal end of fuel supply and a second longitudinal end of ejection of a jet of fuel. fuel, said body further comprising an integrated purge air circuit which comprises an internal cavity which is in fluid communication with air supply ports located on the body and which has an annular portion extending around said axis d 'extension and connected to air outlet channels opening at the level of said second end, characterized in that air flow disruptors are provided projecting in the annular portion of said internal cavity.
- Disruptors make it possible to give the air circuit at least one additional function compared to the purge function.
- Disruptors can, for example, promote the exchange of calories between the air and the body of the injector and thus participate in the cooling of the body of the injector. They can also facilitate the propagation of the fuel jet and thus optimize the performance of the combustion chamber equipped with this injector.
- the injector according to the invention may include one or more of the characteristics below, taken in isolation from each other or in combination with each other:
- disruptors comprising projecting annular fins extending in this annular portion around said axis of elongation, -
- the disruptors comprise first annular fins projecting on an external cylindrical surface defining said portion, and second annular fins projecting on an internal cylindrical surface extending around said external surface,
- the first annular fins are axially spaced from each other along said axis of elongation, the second fins also being axially spaced from each other along this axis and extending in transverse planes passing substantially between the first fins ,
- said cavity comprises two diametrically opposed channels with respect to said axis of elongation and each defining an air outlet at said second end, each of these channels comprising protruding disturbers,
- said body is formed from a single piece
- said first longitudinal end of said body is connected to a fixing base which is formed integrally with said body
- - Said second end comprises a tubular portion of generally elongated shape having an axis of elongation B substantially perpendicular to said axis of elongation A of said body, said tubular portion having its two open longitudinal ends configured to respectively form two fuel flow inlets separate intended to meet substantially in the middle of said tubular portion which comprises at least one ejection slot for a flat jet of fuel.
- the present invention also relates to an aircraft turbomachine, comprising a combustion chamber fitted with at least one injector.
- Figure 1 is a schematic perspective view of a flat jet fuel injector for an aircraft turbomachine
- FIG.2 Figure 2 is a schematic view on a larger scale of part of the injector of Figure 1,
- FIG.3 Figure 3 is a schematic perspective and sectional view of the injector of Figure 1,
- Figure 4 is a schematic view on a larger scale of a detail of Figure 3,
- Figure 5 is a view on an even larger scale of a detail of the injector of Figure 1,
- Figure 6 is a partial schematic view in axial section of a combustion chamber of an aircraft turbomachine
- Figure 7 is a schematic perspective view in partial section of an embodiment of an injector according to the invention.
- Figure 8 is an enlarged view of part of the injector of Figure 7, and
- Figure 9 is a partial schematic perspective view of another embodiment of an injector according to the invention.
- FIGS. 1 to 5 have been mentioned in the foregoing but can be used to better understand the invention naturally. These figures and the following figures illustrate the invention and show a flat jet injector. Although the invention is particularly suited to this type of injector, it is not limited to this injector and applies to any type of injector equipped with a purge air circuit.
- FIG. 6 shows an environment in which a fuel injector 110 according to the invention can be used.
- This is a combustion chamber 130 of an aircraft turbomachine such as a helicopter.
- the combustion chamber 130 is disposed inside a casing 132 of the turbomachine and comprises a wall 134 internally defining a combustion space into which a mixture of air and fuel is injected and burned.
- the fuel is injected into the chamber 130 via one or more injectors 110 which are here attached to the housing 132 and which pass through an orifice 136 in the wall 134.
- the or each injector 110 is of the type of that shown in Figures 1 to 5 and described in the above.
- a body 1 12 of generally elongated shape having an axis of elongation A this body 1 12 comprising a first longitudinal end 1 14 of fuel supply and a second longitudinal end 1 16 for ejecting a jet of fuel .
- This second end 1 16 comprises a nozzle formed by a tubular portion 120 of generally elongated shape having an axis of elongation B substantially perpendicular to the axis of elongation A ( Figure 5 in particular).
- the tubular portion has its two open longitudinal ends configured to respectively form two separate fuel flow inlets (arrows 121) intended to meet substantially in the middle of the tubular portion which has at least one fuel jet ejection slot 125 ( arrow 127).
- the body 1 12 and the tubular portion 120 are made of metal and they are obtained in a single piece by machining a metal block, preferably by additive manufacturing.
- This fixing base 138 comprises a flange extending around of axis A and drilled holes for the screws fixing the injector to the housing 132.
- the body 1 12 comprises an internal longitudinal bore 1 18 extending along and at the level of the axis A, between the first and second ends longitudinal, and in fluid communication with the ends of the tubular portion 120.
- the body 1 12 also includes an internal cavity 122 for the air passage, which comprises an annular portion 139 extending around the bore 1 18 and channels 140 which open out at the end 1 16 to form the outlets. the aforementioned purge air.
- the portion of the cavity 122 extends over part of the length of the body 1 12. It extends to the second longitudinal end 1 16 of the body 1 12 and is connected to two channels 140 diametrically opposed with respect to the axis A, which open at this end 1 16 so that air is expelled from the injector.
- a jet of fuel is ejected from the injector, that jet is surrounded by air expelled from the same injector.
- the expelled air purges the injector fuel system. The air then expels the last drops of fuel and cleans the fuel ejection slot 125 of the tubular portion 120.
- the air passage cavity 122 is thus assimilated to a purge circuit.
- the cavity 122 is in fluid communication with an annular row of air supply ports 124 formed at the periphery of the body and extending around the axis of elongation A .
- Figures 7 and 8 illustrate a first embodiment of the invention in which disruptors 150 of the air flow are provided in the cavity 122, and more particularly in its annular portion 139.
- This annular portion 139 is here defined between two cylindrical surfaces 152, 154 extending one around the other and around the axis A.
- Disruptors 150 have first annular fins 150a protruding from the inner cylindrical surface 152, and second annular fins 150b protruding from the outer cylindrical surface 154.
- the fins 150a are axially spaced from each other along the axis A.
- the fins 150b are also axially spaced from each other. others along this axis A and extend in transverse planes passing substantially between the fins 150a.
- the fins 150a, 150b may have in axial section a rectangular, triangular or trapezoidal shape.
- the fins 150a may have a different cross-sectional shape from the fins 150b, as in the example shown. They may have a thickness or axial dimension substantially equal to their height or radial dimension (measured from the A axis).
- the number of fins 150a, 150b on each surface 152,154 is for example between 3 and 15 and preferably between 5 and 10.
- FIG. 9 illustrates an alternative embodiment which can be combined with the previous embodiment.
- Each of the channels 140 has protruding disruptors 156.
- the disruptors 156 of each of the channels 140 comprise several partitions, which are here parallel to each other and substantially parallel to the axis A.
- the number of disruptors 156 or partitions per channel 140 is for example between 3 and 10.
- the air leaving the purge circuit is guided by the partitions so as to optimize the formation and the diffusion of the fuel jet, for example in the direction of an ignition plug of the combustion chamber 130 equipped with injector 1 10.
- the injector 1 10 according to the invention can be produced by additive manufacturing for example, and is advantageously in one piece.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20751616.2A EP4004442A1 (fr) | 2019-07-24 | 2020-07-16 | Injecteur de carburant a circuit de purge pour une turbomachine d'aeronef |
CA3144907A CA3144907A1 (fr) | 2019-07-24 | 2020-07-16 | Injecteur de carburant a circuit de purge pour une turbomachine d'aeronef |
US17/628,393 US11892166B2 (en) | 2019-07-24 | 2020-07-16 | Fuel injector with a purge circuit for an aircraft turbine engine |
CN202080057032.9A CN114222889A (zh) | 2019-07-24 | 2020-07-16 | 用于飞行器涡轮发动机的具有净化回路的燃料喷射器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR1908419 | 2019-07-24 | ||
FR1908419A FR3099231B1 (fr) | 2019-07-24 | 2019-07-24 | Injecteur de carburant a circuit de purge pour une turbomachine d’aeronef |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021014074A1 true WO2021014074A1 (fr) | 2021-01-28 |
Family
ID=68987816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2020/051274 WO2021014074A1 (fr) | 2019-07-24 | 2020-07-16 | Injecteur de carburant a circuit de purge pour une turbomachine d'aeronef |
Country Status (6)
Country | Link |
---|---|
US (1) | US11892166B2 (fr) |
EP (1) | EP4004442A1 (fr) |
CN (1) | CN114222889A (fr) |
CA (1) | CA3144907A1 (fr) |
FR (1) | FR3099231B1 (fr) |
WO (1) | WO2021014074A1 (fr) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE200106C (fr) | ||||
JP2003247425A (ja) | 2002-02-25 | 2003-09-05 | Mitsubishi Heavy Ind Ltd | 燃料ノズル、燃焼器およびガスタービン |
US20090044538A1 (en) * | 2007-04-18 | 2009-02-19 | Pelletier Robert R | Fuel injector nozzles, with labyrinth grooves, for gas turbine engines |
EP2244014A2 (fr) | 2009-04-23 | 2010-10-27 | General Electric Company | Brûleur à injection directe stratifié radial |
FR2971039A1 (fr) | 2011-02-02 | 2012-08-03 | Turbomeca | Injecteur de chambre de combustion de turbine a gaz a double circuit de carburant et chambre de combustion equipee d'au moins un tel injecteur |
US20140190168A1 (en) * | 2013-01-10 | 2014-07-10 | General Electric Company | Dual fuel nozzle tip assembly |
DE102013208069A1 (de) | 2013-05-02 | 2014-11-06 | Siemens Aktiengesellschaft | Brennerlanze für einen Brenner einer Gasturbine |
FR3013805A1 (fr) | 2013-11-26 | 2015-05-29 | Turbomeca | Ensemble de combustion a acces facilite des cannes de prevaporisation. |
JP2015127633A (ja) * | 2015-03-02 | 2015-07-09 | 三菱日立パワーシステムズ株式会社 | 燃料ノズル、これを備えた燃焼器及びガスタービン |
US20150285504A1 (en) * | 2014-04-08 | 2015-10-08 | General Electric Company | Trapped vortex fuel injector and method for manufacture |
FR3059047A1 (fr) * | 2016-11-21 | 2018-05-25 | Safran Helicopter Engines | Injecteur de chambre de combustion pour une turbomachine et son procede de fabrication |
DE102017200106A1 (de) | 2017-01-05 | 2018-07-05 | Siemens Aktiengesellschaft | Brennerspitze mit einem Luftkanalsystem und einem Brennstoffkanalsystem für einen Brenner und Verfahren zu deren Herstellung |
FR3067792A1 (fr) | 2017-06-16 | 2018-12-21 | Safran Helicopter Engines | Injecteur de carburant a jet plat pour une turbomachine d'aeronef et son procede de fabrication |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2875584B1 (fr) * | 2004-09-23 | 2009-10-30 | Snecma Moteurs Sa | Injecteur a effervescence pour systeme aeromecanique d'injection air/carburant dans une chambre de combustion de turbomachine |
US8286433B2 (en) * | 2007-10-26 | 2012-10-16 | Solar Turbines Inc. | Gas turbine fuel injector with removable pilot liquid tube |
US9151227B2 (en) * | 2010-11-10 | 2015-10-06 | Solar Turbines Incorporated | End-fed liquid fuel gallery for a gas turbine fuel injector |
US20170328568A1 (en) * | 2014-11-26 | 2017-11-16 | Siemens Aktiengesellschaft | Fuel lance with means for interacting with a flow of air and improve breakage of an ejected liquid jet of fuel |
-
2019
- 2019-07-24 FR FR1908419A patent/FR3099231B1/fr active Active
-
2020
- 2020-07-16 CN CN202080057032.9A patent/CN114222889A/zh active Pending
- 2020-07-16 WO PCT/FR2020/051274 patent/WO2021014074A1/fr active Application Filing
- 2020-07-16 CA CA3144907A patent/CA3144907A1/fr active Pending
- 2020-07-16 EP EP20751616.2A patent/EP4004442A1/fr active Pending
- 2020-07-16 US US17/628,393 patent/US11892166B2/en active Active
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE200106C (fr) | ||||
JP2003247425A (ja) | 2002-02-25 | 2003-09-05 | Mitsubishi Heavy Ind Ltd | 燃料ノズル、燃焼器およびガスタービン |
US20090044538A1 (en) * | 2007-04-18 | 2009-02-19 | Pelletier Robert R | Fuel injector nozzles, with labyrinth grooves, for gas turbine engines |
EP2244014A2 (fr) | 2009-04-23 | 2010-10-27 | General Electric Company | Brûleur à injection directe stratifié radial |
FR2971039A1 (fr) | 2011-02-02 | 2012-08-03 | Turbomeca | Injecteur de chambre de combustion de turbine a gaz a double circuit de carburant et chambre de combustion equipee d'au moins un tel injecteur |
US20140190168A1 (en) * | 2013-01-10 | 2014-07-10 | General Electric Company | Dual fuel nozzle tip assembly |
DE102013208069A1 (de) | 2013-05-02 | 2014-11-06 | Siemens Aktiengesellschaft | Brennerlanze für einen Brenner einer Gasturbine |
FR3013805A1 (fr) | 2013-11-26 | 2015-05-29 | Turbomeca | Ensemble de combustion a acces facilite des cannes de prevaporisation. |
US20150285504A1 (en) * | 2014-04-08 | 2015-10-08 | General Electric Company | Trapped vortex fuel injector and method for manufacture |
JP2015127633A (ja) * | 2015-03-02 | 2015-07-09 | 三菱日立パワーシステムズ株式会社 | 燃料ノズル、これを備えた燃焼器及びガスタービン |
FR3059047A1 (fr) * | 2016-11-21 | 2018-05-25 | Safran Helicopter Engines | Injecteur de chambre de combustion pour une turbomachine et son procede de fabrication |
DE102017200106A1 (de) | 2017-01-05 | 2018-07-05 | Siemens Aktiengesellschaft | Brennerspitze mit einem Luftkanalsystem und einem Brennstoffkanalsystem für einen Brenner und Verfahren zu deren Herstellung |
FR3067792A1 (fr) | 2017-06-16 | 2018-12-21 | Safran Helicopter Engines | Injecteur de carburant a jet plat pour une turbomachine d'aeronef et son procede de fabrication |
Also Published As
Publication number | Publication date |
---|---|
US11892166B2 (en) | 2024-02-06 |
FR3099231A1 (fr) | 2021-01-29 |
FR3099231B1 (fr) | 2022-08-12 |
CN114222889A (zh) | 2022-03-22 |
US20220282869A1 (en) | 2022-09-08 |
CA3144907A1 (fr) | 2021-01-28 |
EP4004442A1 (fr) | 2022-06-01 |
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