WO2014013170A1 - Refroidissement du circuit d'huile d'une turbomachine - Google Patents
Refroidissement du circuit d'huile d'une turbomachine Download PDFInfo
- Publication number
- WO2014013170A1 WO2014013170A1 PCT/FR2013/051680 FR2013051680W WO2014013170A1 WO 2014013170 A1 WO2014013170 A1 WO 2014013170A1 FR 2013051680 W FR2013051680 W FR 2013051680W WO 2014013170 A1 WO2014013170 A1 WO 2014013170A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- exchanger
- turbomachine
- refrigerant
- air
- Prior art date
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
- F01D25/08—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
- F01D25/18—Lubricating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/002—Cooling
-
- 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
- F02C7/06—Arrangements of bearings; Lubricating
-
- 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
- F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/02—Arrangements for conditioning of lubricants in the lubricating system by cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- 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
- F05D2260/213—Heat transfer, e.g. cooling by the provision of a heat exchanger within the cooling circuit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- 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
- the present invention relates to a turbomachine, such as a turbojet engine or an airplane turboprop engine, comprising at least one oil circuit and means for cooling the oil of this circuit.
- a turbomachine comprises an oil circuit for lubricating equipment, such as in particular rolling bearings or gear members, and also comprises a fuel system supplying injectors mounted in a combustion chamber.
- an oil / fuel heat exchanger arranged in the oil and fuel circuits downstream or upstream of one or more oil / air heat exchanger (s) mounted in the fuel circuit is used. 'oil.
- the oil / air heat exchanger is traversed or swept by a flow of air coming from outside or inside the turbomachine.
- the oil / air heat exchanger is necessary to cool the oil when, for certain points of operation of the turbomachine, the oil / fuel heat exchanger does not sufficiently cool the oil.
- the oil / air heat exchanger is for example of the surface type, that is, it includes oil ducts swept by a cold air stream from a bypass air stream called a secondary air stream.
- Such an exchanger is for example housed on a wall of the secondary flow channel, immediately downstream of the fan.
- the oil / air heat exchanger may also be of the plate type and traversed by a stream of air taken from the secondary air stream and reinjected at the outlet therein.
- the temperature difference that can be used by the exchanger is reduced.
- the air temperature is of the order of 100 ° C. for example and the temperature of the oil not to be exceeded is, for example, order of 150 ° C.
- the exchanger must therefore work with a temperature difference of just 50 ° C, which limits the performance of the heat exchanger.
- the invention aims in particular to provide a simple, effective and economical solution to this problem.
- a turbomachine such as a turbojet or an airplane turboprop, comprising at least one oil circuit and means for cooling the oil of this circuit, characterized in that the cooling means have a thermodynamic circuit of refrigerant equipped
- a first heat exchanger capable of exchanging heat between the refrigerant and air and forming a condenser
- a second heat exchanger capable of exchanging heat between the refrigerant and the oil of the oil circuit and forming an evaporator
- a regulator mounted downstream of the first exchanger and upstream of the second exchanger, in the direction of circulation of the refrigerant
- a compressor mounted downstream of the second exchanger and upstream of the first exchanger.
- the oil circuit is no longer cooled using a simple air / oil type heat exchanger but using a thermodynamic device of the heat pump type.
- the heat is taken from the oil by the evaporator, then transferred to the air by the condenser, through the refrigerant.
- air temperature of the order of 100 ° C
- the gain provided by the invention in terms of performance compensates for the addition of the new elements constituting the heat pump and the disadvantages that are usually related to such an addition (bulk, weight, ).
- the turbomachine comprises a secondary vein passing a secondary flow from a blower, the first exchanger being disposed in the secondary vein.
- the first exchanger is designed to exchange heat between the refrigerant and ambient air, external to the turbomachine.
- the oil circuit is designed to lubricate and / or cool turbomachine engine components and / or equipment, such as an electric generator.
- FIG. 1 is a schematic perspective view of a turbomachine of the prior art
- FIG. 2 is a partial schematic representation of an oil circuit of the prior art
- FIG. 3 is a view corresponding to FIG. 2, illustrating an embodiment of an oil circuit of a turbomachine, equipped with a device of the heat pump type, according to the invention.
- FIG. 1 illustrates a turbomachine 1 of the prior art comprising a combustion chamber 2, the combustion gases coming from the chamber driving a high-pressure turbine 3 and a low-pressure turbine 4.
- the high-pressure turbine 3 is coupled by a shaft a high-pressure compressor arranged upstream of the combustion chamber 2 and supplying the latter with pressurized air.
- the low-pressure turbine 4 is coupled by another shaft to a fan wheel 5 arranged at the upstream end of the turbomachine 1.
- a transmission box 6, or accessory box, is connected by a mechanical power take-off 7 to the high-pressure turbine shaft 3 and comprises a set of drive gears of different equipment of the turbomachine, such as pumps. and generators, including electrical. Other power transmissions may also be used.
- FIG. 2 represents an oil circuit 8 of the turbomachine of FIG. 1.
- the oil circuit 8 comprises, from upstream to downstream in the direction of flow of the oil, different assemblies 9 using lubricating and / or cooling oil, recovery pumps 10 allowing the recirculating oil from the equipment to a tank 1 1, feed pumps 12 and a filter 13.
- the overall oil flow may comprise oil used for the lubrication of the accessory box and for the lubrication and cooling of one or more generators electric.
- the oil circuit 8 comprises three heat exchangers connected in series between the filter 13 and the assemblies 9, namely a main oil / fuel heat exchanger 14, an oil / fuel secondary heat exchanger 15 and an oil heat exchanger / air 16.
- the oil / air heat exchanger 16 may be of the surface type, that is to say comprising oil ducts swept by a cold air flow coming from a flow of bypass air commonly known as air flow. secondary air. Such an exchanger 16 is for example housed on a wall of the secondary flow channel immediately downstream of the fan ( Figure 1).
- the oil / air heat exchanger 16 may be of the plate type and traversed by a stream of air taken from the secondary air stream and reinjected at its outlet therein.
- the air flow can be taken outside (ambient air).
- the oil passes through the oil / air heat exchanger 16, the secondary oil / fuel heat exchanger 15 and then the main oil / fuel heat exchanger 14.
- 17 is mounted in the oil circuit 8 bypass on the oil / air heat exchanger 16 and comprises an inlet arranged between the outlet of the filter 13 and the inlet of the oil / air heat exchanger 16 and an outlet arranged between the outlet of the oil / air heat exchanger 16 and the inlet of the secondary oil / fuel heat exchanger 15.
- a hydraulic valve 18 is mounted in the bypass line 17 and controls the passage of the flow rate. oil in the oil / air exchanger 16 or through the bypass line 17 and the oil / air heat exchanger 16. The oil exiting the main oil / fuel heat exchanger 14 then flows to the fuel tank. oil 1 1.
- valve 18 opens to allow the passage of oil through the bypass line 17.
- the oil / air exchangers 16 currently used have relatively low yields, which makes it necessary to use relatively bulky exchangers.
- they cause aerodynamic disturbances that increase with their dimensions, which penalizes the overall efficiency of the turbomachine.
- thermodynamic device 19 of the heat pump type.
- this device 19 comprises a refrigerant circuit 20 equipped with a first heat exchanger 21 able to exchange heat between the refrigerant and the air and forming a condenser, a second heat exchanger 22 adapted to exchange heat between the refrigerant and the oil of the oil circuit 8 and forming an evaporator, a pressure reducer 23 mounted downstream of the first exchanger 21 and upstream of the second exchanger 22, in the direction circulating refrigerant, and a compressor 24 mounted downstream of the second heat exchanger 22 and upstream of the first exchanger 21.
- the first exchanger 21 may be of the surface type (refrigerant pipes swept by an air flow), or plate types.
- the compressor 24 In operation, when it is necessary to cool the oil of the circuit 8, the compressor 24 is started.
- the evaporator 22 then makes it possible to vaporize the refrigerant by taking heat from the oil.
- the compressor 24 makes it possible to increase the pressure and the temperature of the refrigerant in the vapor phase before the latter passes through the condenser 21 where it releases heat into the air, by passing from the gaseous state to the liquid state. .
- the refrigerant in the liquid phase then passes through the regulator 23, whose role is to reduce its pressure and lower its temperature, before passing through the evaporator 22 again.
- Such a device is generally characterized by its coefficient of performance (COP) which can be for example of the order of 5.
- COP coefficient of performance
- the size of the exchanger is limited by the fact that there can be exchanges between the refrigerant and the air with significant temperature differences.
- thermodynamic device could be used in a turbomachine having an oil circuit 8 of a structure different from that illustrated in FIG.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1500548.1A GB2519016B (en) | 2012-07-19 | 2013-07-12 | Cooling of an oil circuit of a turbomachine |
US14/415,313 US10352190B2 (en) | 2012-07-19 | 2013-07-12 | Cooling of an oil circuit of a turbomachine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1257015 | 2012-07-19 | ||
FR1257015A FR2993610B1 (fr) | 2012-07-19 | 2012-07-19 | Refroidissement du circuit d'huile d'une turbomachine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014013170A1 true WO2014013170A1 (fr) | 2014-01-23 |
Family
ID=46963910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2013/051680 WO2014013170A1 (fr) | 2012-07-19 | 2013-07-12 | Refroidissement du circuit d'huile d'une turbomachine |
Country Status (4)
Country | Link |
---|---|
US (1) | US10352190B2 (fr) |
FR (1) | FR2993610B1 (fr) |
GB (1) | GB2519016B (fr) |
WO (1) | WO2014013170A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2534003A (en) * | 2014-10-27 | 2016-07-13 | Snecma | Circuit for de-icing an air inlet lip of an aircraft propulsion assembly |
WO2016156756A1 (fr) * | 2015-04-03 | 2016-10-06 | Snecma | Refroidissement du circuit d'huile d'une turbomachine |
WO2017198965A1 (fr) | 2016-05-20 | 2017-11-23 | Safran | Systeme reversible pour la dissipation de puissances thermiques generees dans un moteur a turbine a gaz |
WO2018055307A1 (fr) | 2016-09-23 | 2018-03-29 | Safran | Système de refroidissement d'un circuit d'un premier fluide d'une turbomachine |
Families Citing this family (9)
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US10087777B2 (en) * | 2016-04-29 | 2018-10-02 | Hamilton Sundstrand Corporation | Lubricant cooling systems for high speed turbomachines |
US11028775B2 (en) * | 2018-08-23 | 2021-06-08 | The Boeing Company | Bleed air boosted engine oil cooler |
FR3094744B1 (fr) * | 2019-04-03 | 2021-12-10 | Safran Nacelles | Fluide caloporteur pour système de refroidissement de turboréacteur pour aéronef |
FR3094749B1 (fr) * | 2019-04-03 | 2021-11-19 | Safran Nacelles | Système de refroidissement de turboréacteur pour aéronef |
FR3094750B1 (fr) * | 2019-04-03 | 2021-11-26 | Safran Nacelles | Système de refroidissement de turboréacteur pour aéronef |
EP3726027A1 (fr) * | 2019-04-17 | 2020-10-21 | United Technologies Corporation | Système de gestion thermique intégré pour refroidissement de carburant |
US11638889B2 (en) * | 2019-09-25 | 2023-05-02 | Pratt & Whitney Canada Corp. | Filter cover protection against external contamination |
CN112879788A (zh) * | 2021-01-22 | 2021-06-01 | 宁波云德半导体材料有限公司 | 一种外置式的石英加工中心润滑液冷却系统装置 |
GB2622208A (en) * | 2022-09-06 | 2024-03-13 | Rolls Royce Plc | A thermal management system for an aircraft |
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FR2914365A1 (fr) * | 2007-03-28 | 2008-10-03 | Airbus France Sas | Systeme de refroidissement et de regulation en temperature d'equipements d'un ensemble propulsif d'aeronef. |
WO2009140100A1 (fr) * | 2008-05-13 | 2009-11-19 | General Electric Company | Procédé et appareil pour commander du carburant dans un moteur à turbine à gaz |
WO2010051011A1 (fr) * | 2008-11-03 | 2010-05-06 | Smith J Walter | Systèmes et procédés de gestion thermique dans une centrale électrique à turbine à gaz |
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-
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- 2013-07-12 WO PCT/FR2013/051680 patent/WO2014013170A1/fr active Application Filing
- 2013-07-12 GB GB1500548.1A patent/GB2519016B/en active Active
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EP1895124A2 (fr) * | 2006-08-31 | 2008-03-05 | General Electric Company | Dispositif de refroidissement de l'huile dans le capot de ventilateur et procédé |
FR2914365A1 (fr) * | 2007-03-28 | 2008-10-03 | Airbus France Sas | Systeme de refroidissement et de regulation en temperature d'equipements d'un ensemble propulsif d'aeronef. |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2534003A (en) * | 2014-10-27 | 2016-07-13 | Snecma | Circuit for de-icing an air inlet lip of an aircraft propulsion assembly |
WO2016156756A1 (fr) * | 2015-04-03 | 2016-10-06 | Snecma | Refroidissement du circuit d'huile d'une turbomachine |
FR3034464A1 (fr) * | 2015-04-03 | 2016-10-07 | Snecma | Refroidissement du circuit d'huile d'une turbomachine |
WO2017198965A1 (fr) | 2016-05-20 | 2017-11-23 | Safran | Systeme reversible pour la dissipation de puissances thermiques generees dans un moteur a turbine a gaz |
FR3051509A1 (fr) * | 2016-05-20 | 2017-11-24 | Safran | Systeme reversible pour la dissipation de puissances thermiques generees dans un moteur a turbine a gaz |
US10794231B2 (en) | 2016-05-20 | 2020-10-06 | Safran | Reversible system for dissipating thermal power generated in a gas-turbine engine |
WO2018055307A1 (fr) | 2016-09-23 | 2018-03-29 | Safran | Système de refroidissement d'un circuit d'un premier fluide d'une turbomachine |
FR3056641A1 (fr) * | 2016-09-23 | 2018-03-30 | Safran | Systeme de refroidissement d'un circuit d'un premier fluide d'une turbomachine |
US10954832B2 (en) | 2016-09-23 | 2021-03-23 | Safran | System for cooling a circuit of a first fluid of a turbomachine |
Also Published As
Publication number | Publication date |
---|---|
US10352190B2 (en) | 2019-07-16 |
FR2993610B1 (fr) | 2014-07-11 |
GB2519016B (en) | 2019-10-16 |
FR2993610A1 (fr) | 2014-01-24 |
GB2519016A (en) | 2015-04-08 |
US20150192033A1 (en) | 2015-07-09 |
GB201500548D0 (en) | 2015-02-25 |
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