EP4476429A1 - Rotor de turbine comprenant un anneau d'arrêt d'aubes configuré pour favoriser le refroidissement des pieds d'aubes - Google Patents
Rotor de turbine comprenant un anneau d'arrêt d'aubes configuré pour favoriser le refroidissement des pieds d'aubesInfo
- Publication number
- EP4476429A1 EP4476429A1 EP23707138.6A EP23707138A EP4476429A1 EP 4476429 A1 EP4476429 A1 EP 4476429A1 EP 23707138 A EP23707138 A EP 23707138A EP 4476429 A1 EP4476429 A1 EP 4476429A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- retaining ring
- blade
- ring
- turbine
- 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.)
- Granted
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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
- F01D5/3015—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type with side plates
-
- 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
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/32—Locking, e.g. by final locking blades or keys
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and rotor
-
- 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
- F01D5/082—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades on the side of the rotor disc
-
- 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
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion 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
- 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
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
-
- 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
- F05D2240/55—Seals
-
- 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
- F05D2240/90—Mounting on supporting structures or systems
-
- 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
- F05D2260/205—Cooling fluid recirculation, i.e. after cooling one or more components is the cooling fluid recovered and used elsewhere for other purposes
Definitions
- TITLE Turbine rotor comprising a blade stop ring configured to promote cooling of the blade roots.
- the invention lies in the field of turbomachine turbine rotors.
- the present invention relates more specifically to the cooling and axial retention of the roots of the blades of a turbine rotor, these blade roots having a so-called “fir tree” or “bi-lobed” shape.
- the invention also relates to a turbomachine turbine and a turbomachine, provided with such a rotor.
- a turbomachine comprises successively from upstream to downstream, a low pressure compressor, a high pressure compressor, a combustion chamber, a high pressure turbine and a low pressure turbine, which are traversed by a flow of air, (the upstream and the downstream being defined with respect to the direction of flow of this air flow in the turbine engine).
- Each turbine comprises several axially successive stages, from upstream to downstream.
- Each stage comprises a fixed annular distributor and a mobile rotor, driven in rotation around an axis of rotation, which merges with the longitudinal axis of the turbomachine.
- Each rotor includes a rotor disc and a plurality of radial vanes which extend around this disc.
- the rotor disk is provided at its periphery with a plurality of cells which open onto its outer circumference, each cell being configured to receive the root of such a blade.
- a so-called “fast” low-pressure turbine has been developed. It is so called because its rotor is rotated at a speed higher than that of the rotor of a conventional low-pressure turbine. In order to resist this high rotation speed, the roots of the rotor blades have a so-called “fir or "bilobed” of which an example of embodiment can be seen in the attached figure 1.
- a rotor disc A having a plurality of cells, here only one, referenced B, which allows the reception of the root C of a blade D.
- the blade root C is bilobed, c that is to say that it comprises a radially outer lobe C1 located near of the blade D and that it is extended by a radially internal lobe C2.
- the reception cell B consequently comprises a radially outer cavity B1 opening outwards from the rotor disk and configured to receive the lobe C1 and a radially inner cavity B2 opening into the radially outer cavity B1 and configured to receive the lobe C2 .
- the blade root C is retained axially inside the cell B by a stop ring and a flange (not visible in Figure 1) which blocks the passage cooling air inside the radially outer cavity B1 of the cell B. This leads to a risk of overheating and damage to the root of the blade.
- a turbine rotor comprising a rotor disc, provided at its periphery with a plurality of axial cells, each being configured to receive a foot of dawn.
- This rotor disc also comprises an axial retaining ring for the blade roots and an annular flange placed in contact with the retaining ring.
- This retaining ring is provided with indentations each having a central trunk and side branches.
- the object of the invention is therefore to solve the aforementioned problem and to propose a rotor structure which makes it possible to block the blade root axially inside the cell, in both directions, that is to say upstream and downstream, while allowing effective cooling of the radially internal cavity and the radially external cavity of the cell.
- the invention relates to a turbine rotor comprising:
- rotor disc with a longitudinal axis of rotation and a plurality of radial blades, this rotor disc being provided at its periphery with a plurality of axial cells each configured to receive a blade root, each blade having a bilobed blade root and each cell comprising a radially internal cavity which is extended by a radially external cavity, -an axial retaining ring for the roots of the blades, this retaining ring comprising a radially inner part provided with indentations and a radially outer, solid part,
- annular flange fixed on the upstream side of the rotor disc so that its radially outer end is in contact with the retaining ring, this annular flange being configured so as to form a space with said rotor disc and comprising at least an air inlet opening into said space, and each vane includes a groove for receiving the outer circumferential edge of said retaining ring.
- each notch of the retaining ring is delimited circumferentially on one side and the other by two radial tabs of the retaining ring, the width, taken in a circumferential direction, of a notch is greater than or equal to the width, taken in a circumferential direction, of a cell, and this retaining ring is arranged against the upstream face of the rotor disk, so that each of its notches is located opposite a cell of the rotor disk, so that cooling air can penetrate through said at least one air intake orifice into said space and then pass through the notches to reach the radially outer cavity of the cells of said rotor disk.
- the flange and the retaining ring cooperate to axially hold the root of the blade inside the reception cell of the rotor disk and thus prevent any displacement of this blade towards the upstream or downstream, and this, while allowing effective cooling of the internal and external cavities respectively of the cell, thanks to the presence of the indentations of the retaining ring.
- the retaining ring has as many notches as the rotor disk has cavities for receiving a blade root.
- the rotor comprises an annular seal, disposed between the radially outer end of the annular flange and the upstream face of the radially outer solid part of said retaining ring.
- the annular flange comprises as many cooling orifices as the rotor disc has cells.
- the annular flange generally has an axial branch and a radial branch, the axial branch is fixed to the rotor disc and the radially outer end of said radial branch is in contact with the upstream face of the radially outer part of said retaining ring and said at least one air inlet orifice is formed in the radial branch of the annular flange.
- the retaining ring comprises several ring sectors, arranged end to end circumferentially around the longitudinal axis of rotation.
- each of the two tabs arranged circumferentially on one side and the other of an indentation is less than the height, taken in a radial direction, of the cell for receiving a blade foot on which the indentation opens.
- the invention also relates to a turbomachine turbine, in particular a low-pressure turbine, equipped with the aforementioned rotor.
- the invention finally relates to a turbomachine comprising at least one such turbine.
- FIG. 1 shows a cell of a rotor disk and a blade root in the shape of a fir tree, received in this cell;
- FIG. 2 is a partial perspective view of a rotor disc, blades, the retaining ring and the flange according to the invention
- FIG. 3 is a view in axial and partial section of the rotor disk, of a vane of the retaining ring and of the flange in accordance with the invention
- FIG. 4 is a perspective view of part of two ring sectors forming the retaining ring according to the invention.
- FIG. 5 is a perspective view of part of the retaining ring according to the invention, arranged in front of a rotor disc.
- a rotor 1 which comprises a rotor disc 2 and a plurality of radial vanes 3, arranged around this rotor disc.
- the rotor disc 2 is rotated around an axis of rotation X-X', which also constitutes its central longitudinal axis.
- the rotor disc 2 has an upstream face 21 and an opposite downstream face 22.
- Each blade 3 includes a blade root 30, which has a fir tree or bilobed shape.
- Each blade root 30 thus comprises a radially outer lobe 31 which is extended in the radially inner direction by a radially inner lobe 32.
- the rotor disc 2 further comprises at its periphery a plurality of axial cells 23 each of which allows the reception of a root 30 of blade 3. Each cell 23 opens radially outwards.
- each cell 23 comprises a radially outer cavity 231 which opens outwards and which is extended radially inwards by a radially inner cavity 232.
- the cavity 231 receives the lobe 31 and the cavity 232 receives the lobe 32 from the foot of dawn.
- the rotor 1 also comprises a retaining ring 4 and an annular flange 5, which will now be described in more detail.
- the ring 4 allows the axial retention of the roots 30 of the blades 3. As can be seen better in FIG. 4, this ring 4 has a flat upstream face 40 and an equally flat downstream opposite face 41.
- this axial retaining ring 4 comprises a radially internal part 42, provided with a plurality of notches 43 and a solid radially external part
- the radially outer part 44 is called “full” because it does not have any indentations 43. In other words, the indentations 43 do not extend as far as this part.
- the radially inner portion 42 also includes a plurality of radial tabs
- each tab 45 extending between two notches 43 adjacent.
- each notch 43 is delimited circumferentially on one side and on the other by two radial tongues 45.
- each notch 43 extends radially, has a shape substantially U-shaped and emerges at the edge inner circumferential of the ring 4.
- the tongues 45 make it possible to press the ring 4 firmly against the rotor disc 2 and thus to improve the seal between the two.
- the tabs 45 may have a cutout 450 at their upstream face and close to their radially inner end. Such a cutout 450 makes it possible to refine the internal end of the tab and to lighten the overall weight of the ring 4.
- the ring 4 comprises at its outer circumference a curved edge 46.
- the retaining ring 4 can be a one-piece ring that extends 360° and may or may not be split. It can also be made up of several ring sectors, assembled end-to-end circumferentially to form said ring.
- the number of sectors is not limiting, but preferably it is between two and fifteen and it is advantageously a divisor of the number of blades. By way of purely illustrative example, one can thus see in FIG. 4 two neighboring ring sectors, referenced 4A and 4B.
- the retaining ring 4 is positioned on the rotor disc 2, so that its flat downstream face 41 is in contact with the upstream face 21 of this disc and that its radially outer part 44 is located facing the radially external of the cells 23, as best seen in Figure 3 and also so that its central axis is coaxial with the central longitudinal axis X-X 'of the disc 2.
- this retaining ring 4 is positioned so that each notch 43 is located opposite a cell 23, as is best seen in Figure 5.
- the ring 4 comprises as many notches 43 as there are 23 dimples on rotor disc 2.
- each tongue 45 do not participate in sealing but are there to improve the support of the ring 4 on the disc 2. Indeed, without these tabs, the ring 4 would risk moving more.
- the dimensions of each tongue 45 are therefore adapted accordingly.
- the width, tangential (taken in a circumferential direction), L1 of a tongue 45 is less than the width L2, taken in a circumferential direction, between two adjacent cells 23 of the disc 2, so as not to block the passage of the cooling air through these cells 23. Also preferably, this tangential width L1 is greater than or equal to 5 millimeters (mm).
- the height H of a tongue 45 (which also corresponds to the height H of a notch 43), taken in a radial direction, is preferably greater than 2 mm. Also preferably, this height H is less than the overall height H1, taken according to a radial direction, of the cell 23, since the part 44 of the ring 4 is located opposite the upper end of the radially outer cavity 231 of the cell 23, as can be seen in Figure 3. By way of example, the height of this cell 23 can reach 50 mm.
- the dimensions of the notches 43, and in particular the width L3, taken in a circumferential direction, of a notch 43 is greater than or equal to the width, taken in a circumferential direction of a cell 23, so that when the retaining ring 4 is in place, the notches 43 do not block the passage of air through the cell 23 and allow the air to cool the radially internal cavities 232 and the radially external cavities 231 .
- Each blade 3 further comprises a groove 33 for receiving part of the circumference of the retaining ring 4 or more precisely for receiving part of the outer circumferential edge 46 of the ring 4.
- the blade 3 comprises an upstream spoiler 34 which extends axially upstream and which is provided on its radially inner face with a radially inner tab 35. It is this radially internal lug 35 which is provided with said groove 33 and this groove 33 opens in the direction of the axis X-X'.
- the groove 33 is shaped and dimensioned advantageously so that the edge 46 is inserted therein without clearance. This groove 33 is curved along the same radius of curvature as that of ring 4.
- anti-rotation fingers 47 are provided on the upstream face 40 of the ring, close to the edge 46. As can be seen in FIG. 5, the anti-rotation finger 47 comes into contact with the tab radially inner 35 and cooperates with it to prevent rotation of the ring 4 relative to the blades 3 and the rotor disc 2.
- the ring 4 comprises several anti-rotation fingers 47 or else each ring sector 4A, 4B comprises two anti-rotation fingers, one for each direction of rotation.
- the annular flange 5 is configured to be positioned on the upstream side of the rotor disc 2 and to delimit with it a space E.
- the annular flange 5 thus has an L-shaped cross-section with an axial branch 50 which is extended radially outwards by a radial branch 51.
- the radial branch 51 comprises at its radially outer end 52 a projecting part which extends axially downstream.
- annular groove 53 is formed in this projecting part.
- This groove 53 opens downstream and is intended to receive an annular seal 6, preferably an O-ring.
- the flange 5 comprises at least one air intake orifice 54, preferably formed in the radial branch 51.
- the flange 5 comprises several air intake orifices 54 and more preferably, as many of orifices 54 that there are cells 23 on the rotor disk 2.
- each orifice 54 is aligned with a cell 23 when the flange is in place.
- the annular flange 5 is fixed on the rotor disk 2, so that its central axis is coaxial with the central longitudinal axis X-X' of the disk 2 and so that its radially outer end 52 is in contact with the ring retainer 4.
- the fixing of the flange 5 on the disc 2 is made so that the end 52 is in contact with the upstream face 40 of the solid radially outer part 44.
- the flange 5 is fixed on the rotor disc 2 using a fixing device 7.
- This fixing device 7 is for example a ring, which cooperates with the downstream end of the axial branch 50 of the flange 5 and with the rotor disc 2 to secure it.
- Other fastening devices 7 could also be envisaged, for example fastening by screwing.
- cooling air from upstream enters the space E, through the air inlets 54, as shown by the arrow i.
- This cooling air can then flow into the radially internal cavity 232 of each cell 23, as shown by the arrow ii and also into the radially external cavity 231, as shown by the arrow iii, thanks to the presence of the notches 43.
- the respective contours of the blade root 30 and of the cell 23 have been deliberately shown in dotted lines and having rotated them by 90°.
- the annular flange 5 makes it possible to ensure sealing between the upstream of the flange 5 and the space E. This sealing is also reinforced thanks to the presence of the seal 6, placed against the radially outer part 44 of the retaining ring 4 free of notches 43.
- the flange 5 allows the calibration of the cooling air by the dimensioning of the air intake orifices 54 which are smaller than the notches 43.
- the retaining ring 4 and the annular flange 5 cooperate to ensure the axial locking of the blade roots 30 in the cells 23 of the disc 2. Indeed, the movement of the blade root 30 downstream ( to the right in Figure 3) or upstream (to the left in Figure 3) is prevented by the fact that the groove 33 of the blade 3 is blocked on the rim 46 of the ring 4, itself even pressed against the upstream face 21 of the rotor disk 2 by the flange 5.
- the device according to the invention thus makes it possible to ensure the cooling of the radially outer cavities 231 of the cells 23 of the rotor disk 2, while ensuring the axial blocking of the blades 3.
- the rotor according to the invention finds particular application in turbomachine turbines and more particularly in low-pressure turbines.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2201188A FR3132540B1 (fr) | 2022-02-10 | 2022-02-10 | Rotor de turbine comprenant un anneau d’arrêt d’aubes configuré pour favoriser le refroidissement des pieds d’aubes. |
| PCT/FR2023/050157 WO2023152440A1 (fr) | 2022-02-10 | 2023-02-07 | Rotor de turbine comprenant un anneau d'arrêt d'aubes configuré pour favoriser le refroidissement des pieds d'aubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4476429A1 true EP4476429A1 (fr) | 2024-12-18 |
| EP4476429B1 EP4476429B1 (fr) | 2025-11-12 |
Family
ID=82196595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23707138.6A Active EP4476429B1 (fr) | 2022-02-10 | 2023-02-07 | Rotor de turbine comprenant un anneau d'arrêt d'aubes configuré pour favoriser le refroidissement des pieds d'aubes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12486776B2 (fr) |
| EP (1) | EP4476429B1 (fr) |
| CN (1) | CN118696165A (fr) |
| FR (1) | FR3132540B1 (fr) |
| WO (1) | WO2023152440A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3152835B1 (fr) * | 2023-09-13 | 2025-08-15 | Safran Aircraft Engines | Ventilation des etages d’une turbine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4171930A (en) * | 1977-12-28 | 1979-10-23 | General Electric Company | U-clip for boltless blade retainer |
| US6884028B2 (en) * | 2002-09-30 | 2005-04-26 | General Electric Company | Turbomachinery blade retention system |
| GB201002679D0 (en) * | 2010-02-17 | 2010-04-07 | Rolls Royce Plc | Turbine disk and blade arrangement |
| WO2015020931A2 (fr) * | 2013-08-09 | 2015-02-12 | United Technologies Corporation | Ensemble de plaques de couverture pour moteur à turbine à gaz |
| EP3052762B1 (fr) * | 2013-10-03 | 2021-08-04 | Raytheon Technologies Corporation | Moyen pour fournir un flux de refroidissement à un disque de rotor de turbine |
| FR3108941B1 (fr) * | 2020-04-07 | 2022-08-26 | Safran Aircraft Engines | Rotor de turbine pour turbomachine, procede de montage dudit rotor |
-
2022
- 2022-02-10 FR FR2201188A patent/FR3132540B1/fr active Active
-
2023
- 2023-02-07 EP EP23707138.6A patent/EP4476429B1/fr active Active
- 2023-02-07 CN CN202380021230.3A patent/CN118696165A/zh active Pending
- 2023-02-07 US US18/837,511 patent/US12486776B2/en active Active
- 2023-02-07 WO PCT/FR2023/050157 patent/WO2023152440A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20250035003A1 (en) | 2025-01-30 |
| WO2023152440A1 (fr) | 2023-08-17 |
| CN118696165A (zh) | 2024-09-24 |
| FR3132540A1 (fr) | 2023-08-11 |
| FR3132540B1 (fr) | 2024-03-01 |
| US12486776B2 (en) | 2025-12-02 |
| EP4476429B1 (fr) | 2025-11-12 |
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