EP4616049A1 - Clapet pour turbomachine d'aeronef - Google Patents
Clapet pour turbomachine d'aeronefInfo
- Publication number
- EP4616049A1 EP4616049A1 EP23813803.6A EP23813803A EP4616049A1 EP 4616049 A1 EP4616049 A1 EP 4616049A1 EP 23813803 A EP23813803 A EP 23813803A EP 4616049 A1 EP4616049 A1 EP 4616049A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shutter
- housing
- air inlet
- valve
- seat
- 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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
-
- 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
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
- F01D19/02—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith dependent on temperature of component parts, e.g. of turbine-casing
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/12—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to temperature
-
- 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
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/08—Heating, heat-insulating or cooling means
- F01D5/081—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades
-
- 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
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/38—Retaining components in desired mutual position by a spring, i.e. spring loaded or biased towards a certain position
-
- 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
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/09—Purpose of the control system to cope with emergencies
-
- 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
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
-
- 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
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
- F05D2270/3032—Temperature excessive temperatures, e.g. caused by overheating
Definitions
- This presentation concerns the field of aircraft turbomachines, and more particularly a valve for an aircraft turbomachine.
- a valve can be used to regulate ventilation in the turbomachine.
- the Applicant has developed an improved ventilation device for a turbomachine module for an aircraft which is the subject of patent application FR 3 095 831 Al.
- This device comprises a shutter flap retained by means fuse lock.
- This device provides complete satisfaction in its function of regulating the secondary air circuits.
- the locking means melts, it is evacuated into the turbomachine, which is not desirable for several reasons.
- the invention aims to remedy these drawbacks at least in part.
- the present presentation concerns a valve for an aircraft turbomachine, comprising a seat defining an air inlet, a shutter movable relative to the seat between a shutter position, in which the shutter closes at less partially the air inlet, and an opening position in which the shutter blocks the air inlet less than in the position shutter, a frame fixed relative to the seat, the frame defining a housing and a recovery chamber in communication with one another, and a plug located in the housing, the plug being fuseable and configured to, at the In the solid state, hold the shutter in a first position among the closing position and the opening position, and in the molten state, flow towards the recovery chamber.
- the shutter can automatically move to the second position, whether it is the open position so that the valve provides additional cooling air, or on the contrary the shutter position so that the valve prevents the supply of oxygen in the event of a fire, for example.
- the valve comprises a frame defining a housing and a recovery chamber, the molten plug is recovered and is not lost in unwanted parts of the turbomachine, which increases the reliability of the turbomachine.
- the shutter In the shutter position, the shutter can partially or completely block the air inlet. In the open position, the shutter can be set back from the seat, so as to less obstruct the air inlet.
- the proposed process may have one or more of the following characteristics, considered in isolation or in technically possible combinations:
- a partition separates the recovery chamber from the air inlet
- valve further comprises an elastic element configured to return the shutter to a second position among the shutter position and the open position;
- the housing is defined between the frame and the shutter;
- the shutter is housed at least partly in the housing; - in the second position, one side of the shutter opposite the air inlet is pressed against the frame;
- the shutter is movable in translation between the shutter position and the open position
- the shutter is mounted between the frame and the seat;
- the frame and/or the seat define an air outlet, and in the open position, the air outlet communicates with the air inlet.
- This presentation also concerns an aircraft turbine, comprising a valve as previously described.
- the aircraft turbine may comprise an annular vein for hot air flow and a cavity under the vein coaxial with said vein, the valve being provided on a ventilation device opening into the cavity under the vein. Furthermore, the housing can open into the sub-vein cavity.
- Figure 1 is a schematic view in longitudinal section of a turbomachine.
- Figure 2 is a schematic view in partial longitudinal section of a low pressure turbine of the turbomachine of Figure 1.
- Figure 3 is a longitudinal sectional view of a valve according to a first embodiment, in the closed position.
- Figure 4 is a front view of the valve seat according to the first embodiment, in direction IV-IV of Figure 3.
- Figure 5 is a longitudinal sectional view of the valve according to the first embodiment, in the open position.
- Figure 6 is a longitudinal sectional view of a valve according to a second embodiment, in the closed position.
- Figure 7 is a longitudinal half-section view of a valve according to a third embodiment, in the closed position.
- upstream and downstream are subsequently defined in relation to the direction of flow of the gases through the turbomachine, indicated by the arrow G in Figures 1 and 2.
- Figure 1 illustrates a double flow turbomachine 1 comprising in a known manner from upstream to downstream successively at least one fan 10, an engine part successively comprising at least one stage of low pressure compressor 20, of high pressure compressor 30, a combustion chamber 40, at least one stage of high pressure turbine 50 and low pressure turbine 60.
- the gases flow along an annular hot air flow vein 5, in which the blades of compressors and turbines extend.
- a fraction of air is taken from the high pressure compressor 30 and is conveyed via a cooling air circulation conduit 32 in order to cool hotter zones of the turbomachine 1, in particular the high pressure turbine 50 and the low pressure turbine 60.
- Figure 2 is an enlargement of a zone of the turbomachine 1, illustrating in a simplified manner the upstream part of the low pressure turbine 60, the high pressure turbine 50 not being shown.
- the low pressure turbine 60 illustrated here comprises a plurality of turbine stages 61, 62.
- Each stage 61, 62 further comprises a movable disk 63 on which is mounted a set of driven vanes 64 in rotation by the mobile disk 63.
- the first stage 61 of the low pressure turbine 60 comprises at least one movable blade 64, as well as at least one hollow distributor 70, in which cooling air circulates.
- the distributor 70 forms a single piece with a casing 66 of the turbine and is hollow to allow cooling air to pass through. coming from the cooling conduit 32.
- the following stages 62 located downstream of the low pressure turbine 60, each comprise at least one movable blade 64 and a distributor 65 in the form of a fixed blade.
- the movable disk 63 is integral in rotation with a low pressure shaft 102 extending along the axis XX, while each distributor 65 is connected to the casing 66.
- Each turbine stage 61, 62 further comprises a turbine ring 67 located opposite the movable blades 64, and which is secured to the casing 66.
- the turbomachine 1 comprises a cooling device making it possible to convey the fraction of air taken from the high pressure compressor 30 to at least one stage of the low pressure turbine 60.
- the fraction of cooling air taken is distributed at an upstream stage of the low pressure turbine 60.
- the low pressure turbine 60 is thus cooled.
- the fraction of air taken can also be distributed to other stages of the low pressure turbine 60 and/or to the high pressure turbine 50.
- the fraction of air taken from the high pressure compressor 30 flows into the cooling conduit 32, then into the hollow distributor 70.
- the direction of circulation of the air fraction through the hollow distributor 70 is illustrated by the arrows 71.
- the air fraction is then injected via the injection device 80 into a cavity under the vein 68, coaxial with the vein 5 hot air flow.
- the distributed air makes it possible in particular to cool the disks 63 of the turbines, as illustrated by arrows 75.
- the cooling air injected by the injection device 80 also allows the hot air present in the low pressure turbine 60 to be purged, thus ensuring its cooling. More precisely, the cooling air, taken from the high pressure compressor and conveyed to the vein cavity 68, constitutes a pressure barrier, or purge, preventing hot air coming from the combustion chamber and flowing in the main air circulation vein 5 of the turbines, that is to say in the primary air circulation vein of the turbomachine 1, to penetrate into the cavity under vein 68. Purging of the hot air of the low pressure turbine 60 is here symbolized by the arrow 76. The risks of overheating of the disks 63 of the turbines are thus limited.
- this cavity under the vein 68 is less hot than the vein 5, and the disks 63 of the turbine can therefore withstand greater centrifugal forces. high and be designed for lower limit stresses.
- one or more cooling air circulation conduits 32 each take a fraction of cooling air from an air flow circulating in the high pressure compressor 30, and convey the fraction of air taken from at least one stage of the low pressure turbine 60.
- a cooling malfunction of the turbine 60 can have several causes.
- a cause of the cooling malfunction may be the malfunction of a conduit 32, for example the breakage or accidental blocking of one of the air circulation conduits 32. Another cause of this malfunction may result from excessive wear or breakage of one or more seals, or dynamic seal of the low pressure turbine 60.
- a malfunction in the cooling of the turbine 60 results as a result of example of a failure of a labyrinth seal 69 ensuring pressure insulation of the vein cavity 68 of the low pressure turbine 60.
- the injection device 80 comprises a plurality of first injectors 81, and at least one, preferably several valves 100, distributed on a wall P of the distributor 70 around the axis X.
- the presence of the first injectors 81 is optional, the injection device 80 may only comprise valves 100.
- a single first injector 81 and a single valve 100 are shown in Figure 2.
- one or more valves 100 could also be provided at other locations of the turbomachine 1, such as the high pressure turbine 50.
- valve 100 is provided on a ventilation device, here the injection device 80, opening into the sub-vein cavity 68.
- the first injector 81 is an orifice made in the wall P of the distributor 70, making it possible to inject permanently, that is to say in a manner continues when the turbomachine is in operation, a first flow of cooling air in the cavity under vein 68.
- This first flow ensures cooling, more precisely the purge 76 and the maintenance of temperature of the low pressure turbine 60 in nominal operating conditions thereof, that is to say in the absence of one of the malfunctions mentioned above.
- the dimensions of the orifice are determined so that the first flow rate is for example between 270 and 310 g/s. In certain applications where the temperatures involved are lower, such cooling by a first flow is not necessary under nominal operating conditions. In this case, only valves 100 are necessary.
- the valve 100 comprises a fixed part 110 and a shutter 120.
- the fixed part 110 comprises a seat 111 and a frame 112 fixed relative to the seat 111.
- the seat 111 defines an air inlet 113, for example in fluid communication with conduit 32.
- the seat 111 can have a cylindrical shape with axis A, a major part of which is arranged on one side of the wall P opposite the cavity under the vein 68. However, one end 111a of the seat 111 can be inserted into a orifice of the wall P and protrude inside the vein cavity 68. Note that the seat 111 can be fixed to the wall P for example by welding or brazing, typically at its end 111a. Furthermore, the end 111a can be threaded.
- a portion of the chassis 112, comprising a thread, is then screwed onto the end 111a.
- the screw thread can be self-braking.
- the frame 112 is arranged on the other side of the wall P than the seat
- the chassis 112 thus has a general disc shape, seen from the front.
- the assembly of the seat 111 and the frame 112 forms an internal cavity I.
- the chassis 112 comprises at least one air outlet 112a, preferably a plurality of air outlets 112a (two are visible in Figure 3) distributed circumferentially around the axis A on a side face of the chassis
- the chassis 112 defines a housing 114 and a recovery chamber 116, in fluid communication with one another.
- the housing 114 can project from the chassis 112 in a direction opposite to the air inlet 113, that is to say in this case towards the sub-vein cavity 68.
- the housing 114 therefore opens into the sub-vein cavity 68.
- the housing 114 which receives the plug 140 described later, is more sensitive to the temperature in the vein cavity 68.
- the housing 114 is not cooled excessively by possible leaks from the air inlet 113.
- the wall of the frame 112 can be locally refined at the level of the housing 114. This facilitates thermal conduction at the level of the housing 114 and also contributes to making the housing 114 more sensitive to the temperature in the cavity under vein 68.
- the recovery chamber 116 is in fluid communication with the housing 114 but isolated on the one hand from the air inlet 113, and on the other hand from the air outlets 112a.
- the recovery chamber 116 is a part of the internal cavity I which is located between the shutter 120 and the frame 112.
- a wall 117 here annular, projects from the frame 112 in the direction of the arrival air 113, the wall 117 forming a partition to separate the recovery chamber 116 from the air inlet 113 and, in this case, from the air outlet 112a.
- the shutter 120 is movable relative to the seat 111.
- the shutter 120 can be arranged at least partly in the internal cavity I, between the seat
- the shutter 120 comprises a closing member 121 disposed entirely in the internal cavity I, and a guide rod 122 extending from a downstream face of the closing member 121 and arranged in part in the housing 114, at least in the open position which will be described later.
- the shutter 120 thus has the shape of a piston capable of moving by translation along the axis A.
- the housing 114 is defined between the chassis
- the shutter 120 may include a guide 124.
- the guide 124 projects from the closing member 121 towards the frame 112.
- the guide 124 can provide a guiding role for the shutter 120, here cooperating with wall 117 so as to form a slide.
- the guide 124 is substantially coaxial with the wall 117.
- the clearance between the wall 117 and the guide 124 makes it possible to take into account the differential expansion of the shutter 120 and the frame 112, without hindering their relative movement.
- the guide 124 can define, in cooperation with the wall 117, a partition of the recovery chamber 116, in this case by an overlap between the wall 117 and the guide 124 in the direction of axis A.
- the shutter 120 at least partially blocks the air inlet 113.
- the shutter 120 is positioned along the axis A such that the closing member 121 is in contact with a wall of the seat 111.
- the cooling air entering through the air inlet 113 upstream of the closing member 121 that is that is to say to the left of the closing member 121 in Figure 3, cannot access the part of the internal cavity I located downstream of the closing member 121, and consequently to the air outlets 112a.
- the shutter 120 is held in this shutter position (corresponding to a first position in this embodiment) by a plug 140 located in the housing 114.
- the plug 140 forms a spacer between the shutter 120, for example the guide rod 122, and the frame 112 so as to prevent any movement of the shutter 120 towards the frame 112.
- the plug 140 is made of a meltable material, in particular meltable at certain operating temperatures or malfunction of the low pressure turbine 60.
- the plug 140 can be made of a eutectic material.
- the plug 140 may have an annular shape, for example a hollow cylinder, to facilitate its fusion.
- the seat 111 further comprises an upstream wall 130, fixed by welding or brazing, for example, to an internal wall of the seat 111.
- the upstream wall 130 is here a washer, a front view of which along the axis A is shown in Figure 4.
- the washer comprises a contour 135 fixed to the internal wall of the seat 111, and a central part 133, typically circular, connected to the contour 135 by at least one arm 132, here two. Between the contour 135, the arms 132 and the central part 133, one or more openings 131 are formed defining the air inlet 113.
- the openings 131 in fact allow the passage of the fraction 71 of the cooling air circulating in THE hollow distributor 70, up to the interior of the internal cavity I of the valve 100, in the portion of said internal cavity I located upstream of the shutter 120.
- An elastic element 150 such as a return spring can be placed in the internal cavity I to return the shutter 120 to a second position, namely here an open position.
- the elastic element 150 is positioned upstream of the closing member 121 and mounted in compression between the central part 133 of the upstream wall 130 and the upstream face of the closing member 121.
- the central part 133 of the upstream wall 130 preferably comprises a circular groove 134, configured to receive one end of the elastic element 150 in order to hold the latter.
- the plug 140 is sufficiently incompressible to resist the force exerted by the elastic element 150 on the shutter 120, as well as the force exerted by the pressure of the cooling air upstream of said shutter 120. In nominal operating conditions, the shutter 120 is thus held in the closed position by the plug 140 in the solid state.
- the plug 140 melts at least partially.
- the molten part of the plug 140 then flows towards the recovery chamber 116, for example through one or more grooves 123 provided in the shutter 120, in this case in the guide rod 122.
- This flow can be facilitated by the fact that in the configuration of use, the retention chamber 116 is located lower than the housing 114, so that the molten plug can flow by gravity from the housing 114 to the retention chamber 116.
- the plug 140 which has therefore partially or completely disappeared from the housing 114, therefore frees up a space which the shutter 120, and particularly the guide rod 112, can take up, for example under the effect of the force exerted by the elastic element 150 and/or the air pressure at the level of the air inlet 113.
- the shutter 120 then moves in translation along the axis A towards the chassis 112, which allows its passage in a second position, in this case an open position shown in Figure 5, and maintaining it in this position.
- the shutter 120 is housed at least partly in the housing 114.
- the closing member 121 is no longer in tight contact with the seat 111, so that the upstream and downstream parts of the internal cavity I are in communication. Consequently, the cooling air initially present upstream of the closure member 121 can flow to the air outlets 112a, and thus be injected into the sub-vein cavity 68.
- the shutter 120 blocks the air inlet 113 less than in the closed position, and moreover, the air outlets 112a communicate with the air inlet 113.
- the second position can be such that one face of the shutter 120 opposite the air inlet 113 is pressed against the chassis.
- the shutter 120 therefore remains, reliably, in the second position.
- the temperature within the vein cavity 68 increases and reaches values higher than the temperatures representative of nominal operation.
- the valve 100 opens.
- An additional cooling air flow for example between 80 and 90 g/s, can then be injected into the sub-vein cavity 68 via the valve 100, in addition to the first flow injected by the first injector 81.
- the sum of the first and second flow rates is greater than the flow rate ranges representative of nominal operation, and makes it possible to cover cases of malfunctions, characterized by an increase in the temperature in the turbine.
- the injection of the additional cooling air flow makes it possible to increase the purge flow 76, and thus to prevent the hot air from the vein from penetrating into the cavity under the vein 68.
- valve 100 When returning to nominal operating conditions, it is possible to reuse the valve 100, in particular unscrewing the frame 112 and removing the shutter 120.
- the melted plug 140a can be removed from the recovery chamber 116 and a new cap 140 can be placed in the housing 114. Then, the shutter 120 can be placed again in the shutter position by compressing the elastic element 150.
- FIGS. 6 and 7 show the valve in other embodiments.
- the elements corresponding or identical to those of the first embodiment will receive the same reference sign and will not be described again.
- the valve 100 according to the second embodiment, illustrated in Figure 6, is similar to that of the first embodiment.
- the elastic element 150 is here formed by a leaf spring.
- the housing 114 and the recovery chamber 116 communicate via a gutter 118 provided in the frame 112.
- the guide rod 122 can be without the grooves 123 mentioned above.
- the gutter 118 can open onto a lower wall of the housing 114, as illustrated.
- the frame of the valve 100 comprises an insert 117a.
- the insert 117a housed in the rest of the frame 112, defines a passage for the guide rod 122.
- the guide rod 122 engages in said passage whatever the position of the shutter 120. This allows the housing 114 to be dimensioned independently of the guide rod 122, because the housing 114 no longer has the guiding role that it had in the first embodiment.
- the insert 117a forms a partition separating the recovery chamber 116 from the air inlet 113.
- the recovery chamber is formed between the frame 112 and the insert 117a, for example by a recess in the lower part of the insert 117a.
- Figure 6 shows the fact that the air outlets 112a can be provided in the form of transverse ducts, here radial, opening onto the internal cavity I.
- the valve 100 according to the third embodiment, illustrated in Figure 7, is similar to that of the second embodiment. As indicated previously, it does not include an elastic element 150, only the air pressure coming from the air inlet 113 being used to move the shutter 120 to the open position. Therefore, the upstream wall 130 described above can also be omitted.
- the upstream face of the shutter may comprise a central part 121a transverse to the direction of injection of the shutter. air by the air inlet 113.
- the parts of the closing member 121 configured to come into contact with the seat 111 can maintain corresponding shapes, for example, in this case, substantially conical.
- vents 112b provided on the chassis 112 downstream of the air outlet 112a, in order to balance the pressures between the internal cavity I and the sub-vein cavity 68.
- this vent 112b can be closed by the shutter 120, for example a part of the shutter similar to the guide 124 previously described, in order to prevent air from rushing downstream of the shutter 120 through this vent 112b and risking pushing the shutter 120 towards the air inlet 113.
- the first position and the second position of the shutter can be interchanged.
- a shutter can be held in the open position by the plug in the solid state, for example by providing windows in a central part of the shutter for the passage of air, and in the position of shutter, said windows could be blocked following the movement of the shutter.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Supercharger (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2211615A FR3141719A1 (fr) | 2022-11-08 | 2022-11-08 | Clapet pour turbomachine d’aéronef |
| PCT/FR2023/051738 WO2024100348A1 (fr) | 2022-11-08 | 2023-11-06 | Clapet pour turbomachine d'aeronef |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4616049A1 true EP4616049A1 (fr) | 2025-09-17 |
Family
ID=85018462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23813803.6A Pending EP4616049A1 (fr) | 2022-11-08 | 2023-11-06 | Clapet pour turbomachine d'aeronef |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4616049A1 (fr) |
| CN (1) | CN120225765A (fr) |
| FR (1) | FR3141719A1 (fr) |
| WO (1) | WO2024100348A1 (fr) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2028149A (en) * | 1934-05-31 | 1936-01-21 | Lester M Goldsmith | Safety device |
| US3108434A (en) * | 1959-05-01 | 1963-10-29 | Rolls Royce | Gas turbine engines |
| FR2667354A1 (fr) * | 1990-09-28 | 1992-04-03 | Jaeger | Soupape thermostatique pour circuit de refroidissement de moteur a combustion interne de vehicule automobile. |
| DE102010020800A1 (de) * | 2010-05-18 | 2011-11-24 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren und Vorrichtung zur Kühlluftversorgung für ein Triebwerk, insbesondere Flugtriebwerk, Gasturbine oder dergleichen |
| FR3075270B1 (fr) * | 2017-12-14 | 2020-12-11 | Safran Aircraft Engines | Partie de conduite de drainage d'un fluide pour une turbomachine |
| FR3095831B1 (fr) | 2019-05-10 | 2023-09-01 | Safran Aircraft Engines | dispositif de ventilation amélioré de module de turbomachine |
-
2022
- 2022-11-08 FR FR2211615A patent/FR3141719A1/fr active Pending
-
2023
- 2023-11-06 EP EP23813803.6A patent/EP4616049A1/fr active Pending
- 2023-11-06 WO PCT/FR2023/051738 patent/WO2024100348A1/fr not_active Ceased
- 2023-11-06 CN CN202380082384.3A patent/CN120225765A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024100348A1 (fr) | 2024-05-16 |
| FR3141719A1 (fr) | 2024-05-10 |
| CN120225765A (zh) | 2025-06-27 |
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