EP4381175A1 - Turbomachine comportant un cone de sortie integrant des composants refroidis par circulation d'un flux de refroidissement - Google Patents
Turbomachine comportant un cone de sortie integrant des composants refroidis par circulation d'un flux de refroidissementInfo
- Publication number
- EP4381175A1 EP4381175A1 EP22754132.3A EP22754132A EP4381175A1 EP 4381175 A1 EP4381175 A1 EP 4381175A1 EP 22754132 A EP22754132 A EP 22754132A EP 4381175 A1 EP4381175 A1 EP 4381175A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- cone
- cooling flow
- component
- cooling
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
- F01D25/305—Exhaust heads, chambers, or the like with fluid, e.g. liquid injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
- F01D25/145—Thermally insulated casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/06—Fluid supply conduits to nozzles or the like
- F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/16—Cooling of plants characterised by cooling medium
- F02C7/18—Cooling of plants characterised by cooling medium the medium being gaseous, e.g. air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/04—Mounting of an exhaust cone in the jet pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
- F02K1/82—Jet pipe walls, e.g. liners
- F02K1/822—Heat insulating structures or liners, cooling arrangements, e.g. post combustion liners; Infrared radiation suppressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/14—Casings or housings protecting or supporting assemblies within
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/15—Heat shield
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/231—Preventing heat transfer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- Turbomachine comprising an outlet cone integrating components cooled by circulation of a cooling flow
- the invention relates to an arrangement of a dual-flow turbomachine comprising downstream of it an outlet cone containing components whose cooling is optimized, this turbomachine possibly being of the turbojet, turbofan, turboprop, open rotor or similar type.
- air is admitted into an inlet duct to pass through a fan comprising a series of rotating blades before splitting into a central primary flow and a secondary flow surrounding the primary flow.
- the primary stream is then compressed in compression stages before reaching a combustion chamber, after which it is expanded through high pressure and low pressure turbines before being exhausted to the rear.
- the secondary flow is itself propelled directly aft by the fan in a vein delimited externally by a fairing of the engine.
- Such an engine comprises a low pressure body by which the fan is coupled to the low pressure turbine, and a high pressure body by which the high pressure compressor is coupled to the high pressure turbine, these two bodies being coaxial and independent in rotation.
- this engine Downstream of the low pressure turbine, this engine is fitted with an outlet cone to limit the appearance of turbulence in the ejected flow. Due to the high temperature of the primary flow circulating around this cone, the temperature inside the cone is high, which limits the possibility of integrating components in this cone, so that it constitutes an unused space of important sizes.
- the object of the invention is to provide a solution for effectively cooling components integrated in the internal space of the outlet cone of such an engine.
- the subject of the invention is a dual-flow turbomachine comprising an exhaust casing through which a hot primary flow passes and surrounded by a cold secondary flow, and a cone carried by this exhaust casing, this exhaust comprising a hollow radial arm passing through the primary flow to route a cooling flow to cool components located in this cone, this cone comprising an outer wall and an inner wall which runs along the outer wall while being radially spaced from the latter to delimit a thermal insulation space traversed from upstream to downstream by the cooling flow before its evacuation by an outlet opening terminating the cone, characterized in that it comprises a cover surrounding at least one component for channeling the cooling flow in order that it runs along this component externally to cool it before crossing the thermal insulation space to be evacuated.
- the air circulates as close as possible to the components to maximize heat exchanges so as to ensure much more effective cooling than by simply ventilating the entire internal space of the cone. It is thus possible to install an electrical machine such as a current generator or a motor in the output cone.
- the invention also relates to a turbomachine thus defined, in which the cooling flow conveyed in the hollow radial arm is part of the secondary flow.
- the invention also relates to a turbomachine thus defined, in which at least one component cooled by the cooling flow is an electrical machine such as a current generator or a motor.
- the invention also relates to a turbomachine thus defined, in which the cooling flow passes through an internal region of at least one component before being channeled through the cowl to run along this component.
- turbomachine thus defined, comprising a substantially cylindrical anti-heat radiation plate interposed radially between the cowl and the cone.
- the invention also relates to a turbomachine thus defined, in which the anti-thermal radiation sheet delimits a baffle for the flow of the cooling flow.
- the invention also relates to a turbomachine thus defined, in which the cowl and/or one of the walls of the cone is composed of and/or covered with a thermally insulating material.
- the invention also relates to a turbomachine thus defined, comprising several components cooled by the cooling flow, and in which the component having the lowest maximum admissible temperature is placed upstream of the other components with respect to the path of the cooling flow. in the cone.
- turbomachine thus defined, comprising means such as a fan or a pump for forcing the circulation of the cooling flow when the turbomachine is stopped.
- the invention also relates to a turbomachine thus defined, comprising means of the butterfly valve type for regulating the flow rate of the cooling flow circulating in the cone.
- Figure 1 is a schematic representation of a turbofan engine shown in a longitudinal section view
- Figure 2 is a schematic longitudinal sectional view of a rear part of a turbojet engine according to the invention
- Figure 3 is a schematic longitudinal sectional view of a rear part of a turbojet engine according to a first variant of the invention
- Figure 4 is a schematic longitudinal sectional view of a rear part of a turbojet engine according to a second variant of the invention.
- Figure 5 is a graph representative of the thermal evolution of the cooling flow throughout its journey.
- the air is admitted into an upstream part AM at the level of an inlet sleeve 2 to pass through a fan 3 comprising a series of rotating blades before splitting into a central primary flow and a secondary stream surrounding the primary stream.
- a fan 3 comprising a series of rotating blades before splitting into a central primary flow and a secondary stream surrounding the primary stream.
- the primary flow is then compressed in low pressure 4 and high pressure 6 compressors before arriving in a combustion chamber 7, after which it is expanded through a high pressure turbine 8 and a low pressure turbine 9 before being evacuated. rearward.
- the secondary flow is itself propelled directly rearward by the fan in a vein delimited externally by a hull 11.
- twin-spool type engine comprises a so-called low-pressure body via which the fan 3 is coupled to the low-pressure turbine 9, and a so-called high-pressure body via which the high-pressure compressor 6 is coupled to the high-pressure turbine 8, these two bodies being coaxial and independent in rotation.
- casings 12 which follow one another along the motor.
- casings 12 comprise internal shrouds surrounded by outer shrouds and connected to each other by radial arms, the primary flow circulating in an annular space extending between these inner and outer shrouds.
- This set of casings 12 is itself surrounded by the fairing 11 of the engine while also being intended to be connected to an aircraft structure via usual fittings.
- the casing located downstream of the low pressure turbine, called exhaust casing 13, carries downstream of its central region an outlet cone 14 intended to limit the formation of turbulence in the hot primary flow ejected by the turbine. low pressure 9, and circulating around this cone 14.
- this exhaust casing 13 more particularly comprises an outer shroud 16 surrounding an inner shroud 17 connected to each other by radial arms marked 18, these shrouds jointly delimiting an annular space EA crossed by the hot primary flow FP.
- the inner shroud 17 delimits a generally cylindrical central space EC which is closed at least partially on the upstream side by an upstream wall 19, and on the downstream side by the outlet cone 14 which extends in the downstream extension of this inner shroud 17.
- the outlet cone 14 comprises a conical outer wall 21 which extends the inner shroud 17, and an inner wall 22 which is also conical and runs along the inner face of the wall 21 while being radially at a distance from the latter in order to delimit with it a space of thermal insulation El of the cone 14.
- This space El has a conical shape of revolution because these two walls 21 and 22 have generally conical shapes, their upstream circular edges jointly delimiting an inlet opening 23 in this space El, and these walls are open at their downstream ends. to jointly delimit an outlet opening 24 of this space El.
- the radial arm 18 crossing the primary vein in which the primary flow FP circulates is hollow, to convey air for example from the cold secondary flow FS circulating in the secondary vein in the direction of space central EC. It may be air taken from the secondary flow FS by means of a scoop or air coming from another source and conveyed to the radial arm 18 by means of one or more supply tubes.
- This air constitutes a cooling flow denoted Ff, and it is collected for example with a scoop, not shown, extending the arm 18 into the secondary flow.
- the cooling flow Ff is intended to cool components 26 and T1 located in the central space EC which are for example electrical machines such as motors for rotating the central shaft of the turbomachine, being located around that here or at its downstream end.
- the cooling flow Ff which circulates in a centripetal direction in the arm 18 runs along the upstream wall 19 after having passed the radially inner end of this arm 18, before being deflected by a deflector 28 in order to circulate longitudinally around components 26 and T1, from upstream AM to downstream AV.
- This deflector 28 is for example a cylindrical sheet coaxial with the axis AX whose upstream edge is fixed to the downstream face of the wall 19.
- This cover 29 here comprises a body 31 of cylindrical sheet metal coaxial with the axis AX and surrounding the components 26 and T1, the upstream edge of which is secured to the inner shroud 17, for example by a sheet 32 in the form of a crown of normal orientation. to the axis AX, and the downstream edge of which is extended by a bottom 33 located downstream of the component T1, this bottom being here also a plate in the form of a ring of orientation normal to the axis AX and extending radially inward of the body 31.
- the flow Ff is deflected radially by the bottom 33 to cool a downstream face of the component T1, by circulating in a centripetal direction.
- the flow Ff reaches a central opening of the bottom 33, it is channeled by a guide 34 to circulate in a centrifugal direction along the downstream face of the bottom 33.
- the guide 34 surrounds the cover 29 having a form of the same type as this cover 29, that is to say comprising a guide body 36, having its upstream edge connected to the upstream edge of the internal wall 22 by a sheet 37 in the shape of a crown, this body 36 having its downstream edge extended by a bottom 38 in the form of a disc oriented normal to the axis AX and located downstream of the bottom 33.
- the cover 29 and the guide 34 jointly delimit a space of revolution making it possible to collect the flow Ff at the outlet of the cover 29 to channel it into the inlet opening 23 of the space El so that it circulates there before being evacuated by exit 24.
- the walls 21 and 22 delimiting the space El form a double skin of the cone 14 allowing, thanks to the circulation of the flow Ff, to constitute a thermal barrier limiting the heating of the interior of the cone 14 by the hot primary flow FP flowing around this one.
- This thermal barrier can be further improved by covering one wall of the cone with paint that insulates against thermal radiation or by adding an additional wall or sheet of the anti-thermal radiation type. It can also be improved by using a thermal insulator on the wall 21 and/or 22 of the cone, to limit heat transfer by conduction.
- the basic idea of the invention is to channel the cooling air in the cone 14, and to limit the heating of the wall of this cone, so as to maximize the cooling of the components contained in this cone.
- the cooling thus obtained is sufficiently effective to cool a thermal machine which generates heat, such as a current generator or an electric motor, which can therefore be placed in the space delimited by the outlet cone.
- FIG. 2 The example of the path of the flux Ff given in FIG. 2 is one possibility among several, given that FIGS. 3 and 4 give two other examples of paths of the cold flux also making it possible to optimize this cooling. These pathways can also be optimized or modified to add meanders or baffles so as to optimize heat exchange in the appropriate areas.
- the cooling flow which is denoted Ff '
- Ff ' the cooling flow
- the arm 18 instead of being deflected by a deflector, it circulates in a centripetal direction along the wall 19, until reaching a region close to the axis AX, so as to then circulate longitudinally from upstream to downstream in the component 26 to cool the interior.
- this flow Ff' is deflected by a cover 29' surrounding this component 26.
- a single component with an internal cooling passage is considered rather than two separate components as in the case of Figure 2.
- a first component could be provided with an internal cooling passage, being close to a second component arranged so that the air flows around the latter after having passed through the first component.
- This cover 29′ comprises a cylindrical body 31′ extended downstream by a bottom 33′ oriented normal to the axis AX and consisting of a disc-shaped sheet metal.
- This body 31' is extended upstream by a ring-shaped plate 37', and by which it is connected to an upstream edge of the internal wall 22.
- another plate 32' in the form of an orientation crown substantially normal to the axis AX connects the shroud 17 to an outer face of the component 26 while being located upstream of the plate 37'.
- flow Ff' is first deflected to circulate radially in a centrifugal direction between a downstream face of component 26, before being deflected by body 31' to circulate around the component 26 by flowing from downstream AV to upstream AM, so as to cool the outside of this component 26.
- the flow Ff' is deflected by the plates 32' and 37' between which it passes by circulating radially in a centrifugal direction, to be channeled into the inlet opening 23 of the space El in order to circulate there from upstream to downstream before being evacuated by exit 24.
- this other path of the flux Ff' makes it possible to ensure cooling of an internal region of the component 26, that is to say as close as possible to the region in which the heat is generated in this component.
- an additional protective sheet 39 is interposed between the outlet of the cover and the entry into the space El of the cooling flow, marked with Ff" in this figure. 4, being located radially between the body 31" and the cone 14.
- the cover identified by 29”, also comprises a cylindrical body 31” closed downstream by a bottom 33” in the form of a disc normal to the axis AX.
- the cover 29 is carried by a ring-shaped sheet 37” connecting a central region (along the axis AX) of the body 31” to a region of the internal wall 22 located downstream of the upstream edge of this wall. 22.
- another sheet 32” in the form of a ring of orientation substantially normal to the axis AX connects the ferrule 17 to an external face of the component 26 while being located upstream of the sheet 37”.
- This other sheet 32” carries the cylindrical protective sheet 39 coaxial with the axis AX, extending between the wall 22 and the body 31” having its upstream edge rigidly attached to the downstream face of the sheet 32”.
- This protective plate 39 provides protection against the thermal radiation of the primary flow FP flowing immediately downstream of the arms 18, that is to say in the region where it is the hottest, and thereby radiates the most strongly.
- this sheet is an anti-thermal radiation sheet, such as a sheet covered with a thermally insulating coating in the form of a thermal paint to limit the radiative exchange.
- this protective plate 39 delimits by its presence an additional baffle in the path of the flow Ff", which ensures that it is also strongly cooled by this flow Ff", to increase its power thermal protection.
- the flow Ff is admitted into the inlet opening 23 of the space El to travel through it from upstream to downstream before being evacuated at its exit. 24.
- the protective plate 39 makes it possible to reduce the heat exchanges to maintain the component 26 at the lowest temperature, but it is also possible to do this to thermally protect the arm 18, and the walls 21 and 22 of the cone.
- These additional thermal protections can be in the form of thermally insulating materials, having a low thermal conductivity, incorporated within the parts themselves or applied to their surface. It could be for example materials based on silica fiber, affixed to the arm and to the walls of the cone, and possibly to other elements of the internal environment of the cone.
- the circulation of the cooling flow is arranged according to a labyrinth path, by the elements which are the cover, the guide and other sheet metal elements, to optimize the cooling of the components contained in the cone.
- the elements which are the cover, the guide and other sheet metal elements, to optimize the cooling of the components contained in the cone.
- the flow leaves the radial arm through which it is conveyed, it is channeled to go directly along the components to be cooled, when it is still the coldest, so as to maximize the cooling of these components.
- the heat exchanges are hierarchical.
- the flow Ff when the flow Ff leaves the arm 18, it is at a relatively low temperature T18 close to that of the secondary flow FS, and which is lower than the maximum admissible temperature Tmax26 of the first component 26 to be cooled.
- Tmax26 the maximum admissible temperature of the first component 26 to be cooled.
- the flow Ff heats up while cooling it, until it reaches a temperature close to Tmax26, before reaching the next component T1 whose maximum admissible temperature is denoted Tmax27.
- the temperature of the flow Ff has increased to be at a value relatively close to Tmax27, before being admitted into the space El of the cone 14 which is at a significantly higher temperature noted T14 , so that this flow Ff has been reheated, but it is still at a sufficiently low temperature to cool the cone 14 before being evacuated from it through the outlet opening 24.
- the path of the cooling flow is optimized to first cool the elements to be maintained at the lowest temperature before cooling the elements having a higher temperature, so that this flow Ff heats up throughout its duration. path, while ensuring optimal cooling of the various elements it passes through.
- This cooling can be improved by providing that the thermal barriers formed by the cover and/or by one of the walls of the cone are elements composed of or covered with an insulating material.
- the cooling can be further maximized by forcing the circulation of the cooling flow, for example by means of a fan or a pump, in particular to ensure cooling of the components located in the cone 14 for a predetermined time interval after stopping the motor, and to compensate for pressure drops during normal operation.
- the circulation of the cooling flow can also be regulated, passively or actively, by means of a valve making it possible to control the flow of air of the cooling flow. It may be a valve of the butterfly type actuated by a control unit, in order to increase the flow rate when greater cooling is required, for example during the take-off phase of the aircraft.
- cooling flow comprises a single branch.
- this cooling flow can be branched into several distinct branches which can themselves have their flow rate regulated in isolation by as many valves or diaphragms as there are distinct branches so as to ensure cooling just as needed for each region corresponding to a branch. .
- this cooling can be accompanied by a second cooling, which is internal cooling to the equipment, provided for example by a heat transfer fluid.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2108393A FR3125844B1 (fr) | 2021-08-02 | 2021-08-02 | Turbomachine comportant un cône de sortie intégrant des composants refroidis par circulation d’un flux de refroidissement |
| PCT/FR2022/051465 WO2023012419A1 (fr) | 2021-08-02 | 2022-07-21 | Turbomachine comportant un cone de sortie integrant des composants refroidis par circulation d'un flux de refroidissement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4381175A1 true EP4381175A1 (fr) | 2024-06-12 |
Family
ID=77711188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22754132.3A Pending EP4381175A1 (fr) | 2021-08-02 | 2022-07-21 | Turbomachine comportant un cone de sortie integrant des composants refroidis par circulation d'un flux de refroidissement |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12560104B2 (fr) |
| EP (1) | EP4381175A1 (fr) |
| CN (1) | CN117940651A (fr) |
| FR (1) | FR3125844B1 (fr) |
| WO (1) | WO2023012419A1 (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3125844B1 (fr) * | 2021-08-02 | 2024-01-12 | Safran Aircraft Engines | Turbomachine comportant un cône de sortie intégrant des composants refroidis par circulation d’un flux de refroidissement |
| FR3150235A1 (fr) * | 2023-06-23 | 2024-12-27 | Safran Aircraft Engines | Carter d’échappement cloisonné pour turbomachine |
| GB202312768D0 (en) * | 2023-08-21 | 2023-10-04 | Mclaren Automotive Ltd | Improving acoustic efficiency |
| FR3154451B1 (fr) * | 2023-10-20 | 2025-09-12 | Safran Aircraft Engines | Circuit de ventilation pour turbomachine |
| US12578092B2 (en) * | 2024-01-12 | 2026-03-17 | Rtx Corporation | Cooled variable area nozzle for an aircraft engine |
| US12264623B1 (en) * | 2024-01-18 | 2025-04-01 | Honeywell International Inc. | System for electric machine associated with gas turbine engine |
| FR3167174A1 (fr) * | 2024-10-03 | 2026-04-10 | Safran Aircraft Engines | Turbomachine equipee d’une machine electrique et d’un dispositif de refroidissement |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1410726A (en) * | 1919-08-18 | 1922-03-28 | Jr James M Schoonmaker | Apparatus for cooling internal-combustion engines |
| GB695482A (en) * | 1950-11-28 | 1953-08-12 | Rolls Royce | Improvements in or relating to gas-turbine engines |
| US2932176A (en) * | 1957-02-28 | 1960-04-12 | United Aircraft Corp | Cabin temperature control |
| GB0105349D0 (en) * | 2001-03-03 | 2001-04-18 | Rolls Royce Plc | Gas turbine engine exhaust nozzle |
| WO2004090291A1 (fr) * | 2003-04-07 | 2004-10-21 | Alstom Technology Ltd | Turbomachine |
| US8099966B2 (en) * | 2006-10-18 | 2012-01-24 | Textron Innovations Inc. | System and method for controlling an environment in an aircraft using a vortex cooler |
| US7578369B2 (en) * | 2007-09-25 | 2009-08-25 | Hamilton Sundstrand Corporation | Mixed-flow exhaust silencer assembly |
| US20110239656A1 (en) * | 2010-04-02 | 2011-10-06 | Matthew Crume | Water Augmentation System |
| US10094285B2 (en) * | 2011-12-08 | 2018-10-09 | Siemens Aktiengesellschaft | Gas turbine outer case active ambient cooling including air exhaust into sub-ambient cavity |
| US20150138342A1 (en) * | 2013-11-19 | 2015-05-21 | United Technologies Corporation | System and method to determine visible damage |
| US10801410B2 (en) * | 2018-04-12 | 2020-10-13 | Raytheon Technologies Corporation | Thermal management of tail cone mounted generator |
| EP3581679B1 (fr) * | 2018-06-01 | 2021-02-17 | Rolls-Royce North American Technologies, Inc. | Réparation de système de revêtement à base de suspension |
| FR3088955B1 (fr) * | 2018-11-27 | 2020-12-25 | Safran Aircraft Engines | Turboréacteur à double flux comprenant un cône de sortie refroidi par son flux secondaire |
| US10975770B1 (en) * | 2019-12-05 | 2021-04-13 | Hamilton Sundstrand Corporation | Integral engine case precooler |
| FR3125844B1 (fr) * | 2021-08-02 | 2024-01-12 | Safran Aircraft Engines | Turbomachine comportant un cône de sortie intégrant des composants refroidis par circulation d’un flux de refroidissement |
| CN119604668A (zh) * | 2022-08-09 | 2025-03-11 | 西门子能源国际公司 | 带有涡轮轮叶承载件冷却流路的燃气涡轮发动机 |
| US12286930B1 (en) * | 2023-12-12 | 2025-04-29 | Rolls-Royce North American Technologies Inc. | Turbine engine fan case with bleed air for tip injection and heat exchanger cooling |
-
2021
- 2021-08-02 FR FR2108393A patent/FR3125844B1/fr active Active
-
2022
- 2022-07-21 US US18/293,904 patent/US12560104B2/en active Active
- 2022-07-21 CN CN202280060952.5A patent/CN117940651A/zh active Pending
- 2022-07-21 EP EP22754132.3A patent/EP4381175A1/fr active Pending
- 2022-07-21 WO PCT/FR2022/051465 patent/WO2023012419A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023012419A1 (fr) | 2023-02-09 |
| CN117940651A (zh) | 2024-04-26 |
| FR3125844B1 (fr) | 2024-01-12 |
| FR3125844A1 (fr) | 2023-02-03 |
| US20250122812A1 (en) | 2025-04-17 |
| US12560104B2 (en) | 2026-02-24 |
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