EP4396445A1 - Dispositif d'amortissement pour roue mobile de turbomachine d'aéronef, roue mobile pour turbomachine d'aéronef, turbomachine pour aéronef et procédé de fabrication d'un dispositif d'amortissement - Google Patents
Dispositif d'amortissement pour roue mobile de turbomachine d'aéronef, roue mobile pour turbomachine d'aéronef, turbomachine pour aéronef et procédé de fabrication d'un dispositif d'amortissementInfo
- Publication number
- EP4396445A1 EP4396445A1 EP22773756.6A EP22773756A EP4396445A1 EP 4396445 A1 EP4396445 A1 EP 4396445A1 EP 22773756 A EP22773756 A EP 22773756A EP 4396445 A1 EP4396445 A1 EP 4396445A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support elements
- blades
- aircraft
- damping device
- wheel
- 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
- F01D5/12—Blades
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
-
- 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
- F05D2220/323—Application in turbines in gas turbines for aircraft propulsion, e.g. jet engines
-
- 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
- F05D2230/00—Manufacture
- F05D2230/50—Building or constructing in particular ways
- F05D2230/51—Building or constructing in particular ways in a modular way, e.g. using several identical or complementary parts or features
-
- 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
- F05D2230/00—Manufacture
- F05D2230/50—Building or constructing in particular ways
- F05D2230/54—Building or constructing in particular ways by sheet metal manufacturing
-
- 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
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
-
- 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
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/501—Elasticity
Definitions
- the invention relates to the field of turbine engines for aircraft propulsion systems.
- the rotor of a conventional aeronautical turbomachine comprises moving wheels each formed by a disc and a plurality of vanes which follow one another circumferentially. Each blade comprises a root received in a respective cell formed at the periphery of the disc.
- such a damping member can be made to pivot around the radial axis so as to be pressed axially upstream on one of the stilts.
- blade delimiting the cavity and axially downstream on the other blade stilt delimiting the cavity, which tends to damage the stilts.
- the aim of the invention is to provide a damping device making it possible to reduce the wear of the surrounding parts.
- the subject of the invention is a damping device for the moving wheel of an aircraft turbine engine, according to the characteristics of claim 1.
- the elastic member allows the shock absorber to deform by allowing relative movements of the support elements and by dissipating part of the forces to which it is subjected.
- the damping device of the invention thus makes it possible to reduce the tangential forces applied to the stilts, or more generally to the parts with which the support elements come into contact, and thus to reduce their wear, while ensuring good damping performance.
- each envelope comprises a free edge, an inner surface delimiting the hollow space of this envelope and an outer surface, the inner surface and the outer surface of each envelope being delimited by the free edge of this envelope, the device being configured so that the free edges of the two envelopes face each other.
- the free edges of the two envelopes define between them a gap making it possible to prevent them from coming into contact with each other, at least when the device is not subjected to external stress and preferably in all turbomachine operating phases.
- Such an arrangement of the free edges makes it possible, on the one hand, to deform the device by compression of the elastic member under the action of a force exerted on the envelopes and, on the other hand, to prevent the free edges of the envelopes do not come into contact with the stilts delimiting the cavity receiving the device.
- each of the envelopes is preferably smooth.
- each of the casings is preferably devoid of edges or projecting parts.
- each of the casings comprises a lateral part intended to be arranged facing said shank of a respective one of said blades. In one embodiment, the outer surface of each of the casings comprises a lower part intended to be placed opposite a tooth of a disk of said movable wheel.
- each of the envelopes comprises a side part and a lower part
- the lower part is preferably connected to the side part by a rounding.
- each of the casings comprises an upper part intended to be arranged facing a platform of a respective one of said blades.
- each of the envelopes comprises a side part and an upper part
- the upper part is preferably connected to the side part by a rounding.
- the elastic member comprises a first material and the support elements comprise a second material different from the first material.
- the first material can be an elastomeric material preferably comprising polyurethane or fluoroethane.
- the second material can be a metal alloy preferably comprising nickel.
- Such a metal alloy makes it possible to obtain a high coefficient of friction with the mobile wheel, which increases the efficiency of the dissipation of vibratory energy during friction.
- the invention also relates to a moving wheel for an aircraft turbomachine, extending around a longitudinal axis and comprising a disk and blades, the disk forming teeth defining circumferentially between them cells, the blades each comprising a platform, a stilt and a foot received in a respective one of the cells, the wheel forming a cavity delimited circumferentially by the stilts of two of said vanes which follow each other circumferentially, the cavity being delimited radially inwards by one of the teeth extending circumferentially between the feet of these two blades and radially outwards by the platforms of these two blades, the wheel comprising a damping device as described above housed in the cavity.
- the invention also relates to a compressor for a turbomachine comprising such a moving wheel and a turbine for a turbomachine comprising such a moving wheel.
- Another subject of the invention is a turbine engine for an aircraft, comprising such a compressor and/or such a turbine and/or such a moving wheel and/or a damping device as described above.
- the subject of the invention is a method of manufacturing a damping device as described above.
- this method comprises a step of stamping two metal sheets so as to form said envelopes.
- the method comprises a step of assembling the elastic member and the two casings or support elements.
- the assembly step comprises a cold bonding or hot bonding operation.
- FIG. 1 is a schematic view in axial section of a twin-spool turbofan engine
- FIG. 2 is a schematic perspective view of an angular sector of a mobile wheel according to the invention
- FIG. 3 is a schematic view in perspective and in cross-section of part of the wheel of FIG. 2;
- FIG. 4 is a schematic view of part of the wheel of FIG. 2, including a shock absorber according to the invention
- FIG. 6 is a schematic perspective view of the damper of Figure 5;
- FIG. 7 is a schematic view in perspective and in cross-section of the damper of FIG. 6;
- FIG. 8 is a schematic view in perspective and in cross-section of part of the wheel of FIG. 2, including the shock absorber of FIG. 5;
- FIG. 9 is a schematic perspective view of part of the wheel of Figure 2, including the shock absorber of Figure 5.
- FIG. 1 Shown in FIG. 1 is a turbojet engine 1 with two spools and turbofans with a low bypass ratio, intended for the propulsion of an aircraft.
- the turbojet engine 1 has a central longitudinal axis Al around which its various components extend.
- upstream and downstream are defined with reference to a direction SI of the main flow of the gases in the turbojet engine 1 along the axis Al.
- Figures 1 to 9 include a mark defining an axial or longitudinal direction DI corresponding to the direction of the axis Al, a radial direction D2 and a tangential or circumferential direction D3.
- the turbojet engine 1 comprises, from upstream to downstream, a low pressure compressor 2, a high pressure compressor 3, a combustion chamber 4, a high pressure turbine 5 and a low pressure turbine 6 constituting a gas generator.
- the low pressure compressor 2 and the low pressure turbine 6 form a low pressure body.
- the high pressure compressor 3 and the high pressure turbine 5 form a high pressure body.
- the compressors 2 and 3 as well as the turbines 5 and 6 each comprise a rotor and a stator forming one or more stages.
- a compressor stage comprises, from upstream to downstream, a bladed impeller which draws in and accelerates a flow of air and a straightener designed to straighten the flow thus accelerated by increasing its pressure.
- a turbine stage for its part comprises, from upstream to downstream, a distributor and a bladed mobile wheel, the distributor being configured to accelerate the flow of air in the direction of the wheel in order to drive it in rotation.
- the impeller and the rectifier of the first stage of the low pressure compressor 2 are referred to by the references 8 and 9 respectively.
- the moving wheel of the second stage of this compressor 2 is referred to by the reference 10 and that of the third stage is referred to by the reference 11.
- the following description relates, by way of non-limiting example, to the mobile wheel 8 of the first stage of the low-pressure compressor 2 of FIG. 1.
- annular stop member (not shown) is in this example mounted upstream of the disc 20 so as to form an upstream axial stop for the blades 21.
- the inner 50 and outer 51 surfaces are non-developable surfaces.
- the inner surface 50 of the support element 41 delimits said hollow space formed by this piece.
- the lower 55, upper 56, downstream 57 and upstream 58 parts are each connected on the one hand to each other and on the other hand to the lateral part 54 by smooth transitions forming roundings on the outer surface 51.
- the support elements 41 and 42 are symmetrical with respect to each other so that what has just been described applies by analogy to the support element 42.
- the upper part 56 of the support element 41 is arranged opposite the platform 26 of said first blade 21 and the upper part of the support element 42 is arranged opposite of the platform 26 of said second blade 21.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2109134A FR3126446B1 (fr) | 2021-09-01 | 2021-09-01 | Amortisseur déformable pour roue mobile de turbomachine |
| PCT/FR2022/051638 WO2023031556A1 (fr) | 2021-09-01 | 2022-08-31 | Dispositif d'amortissement pour roue mobile de turbomachine d'aéronef, roue mobile pour turbomachine d'aéronef, turbomachine pour aéronef et procédé de fabrication d'un dispositif d'amortissement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4396445A1 true EP4396445A1 (fr) | 2024-07-10 |
| EP4396445B1 EP4396445B1 (fr) | 2025-05-21 |
Family
ID=78536354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22773756.6A Active EP4396445B1 (fr) | 2021-09-01 | 2022-08-31 | Dispositif d'amortissement pour roue mobile de turbomachine d'aéronef, roue mobile pour turbomachine d'aéronef, turbomachine pour aéronef et procédé de fabrication d'un dispositif d'amortissement |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12480410B2 (fr) |
| EP (1) | EP4396445B1 (fr) |
| CN (1) | CN117897550A (fr) |
| FR (1) | FR3126446B1 (fr) |
| WO (1) | WO2023031556A1 (fr) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH494896A (de) * | 1968-08-09 | 1970-08-15 | Sulzer Ag | Halterung von Laufschaufeln im Rotor einer Turbomaschine |
| GB1549152A (en) * | 1977-01-11 | 1979-08-01 | Rolls Royce | Rotor stage for a gas trubine engine |
| FR2669686B1 (fr) * | 1990-11-28 | 1994-09-02 | Snecma | Rotor de soufflante avec aubes sans plates-formes et sabots reconstituant le profil de veine. |
| US5205713A (en) * | 1991-04-29 | 1993-04-27 | General Electric Company | Fan blade damper |
| FR2739135B1 (fr) * | 1995-09-21 | 1997-10-31 | Snecma | Agencement amortisseur monte entre des aubes de rotor |
| FR2934873B1 (fr) * | 2008-08-06 | 2011-07-08 | Snecma | Dispositif amortisseur de vibrations pour attaches d'aubes. |
| FR2949142B1 (fr) * | 2009-08-11 | 2011-10-14 | Snecma | Cale amortisseuse de vibrations pour aube de soufflante |
| US9303519B2 (en) * | 2012-10-31 | 2016-04-05 | Solar Turbines Incorporated | Damper for a turbine rotor assembly |
| JP6151932B2 (ja) * | 2013-02-28 | 2017-06-21 | 三菱重工業株式会社 | 回転機械用減衰部材 |
| JP6272044B2 (ja) * | 2014-01-17 | 2018-01-31 | 三菱重工業株式会社 | 動翼体のシール構造、動翼体及び回転機械 |
| US20170067349A1 (en) * | 2015-09-03 | 2017-03-09 | General Electric Company | Damper pin for a turbine blade |
| CN204941612U (zh) * | 2015-09-16 | 2016-01-06 | 中国航空工业集团公司沈阳发动机设计研究所 | 一种可压缩阻尼块 |
-
2021
- 2021-09-01 FR FR2109134A patent/FR3126446B1/fr active Active
-
2022
- 2022-08-31 EP EP22773756.6A patent/EP4396445B1/fr active Active
- 2022-08-31 WO PCT/FR2022/051638 patent/WO2023031556A1/fr not_active Ceased
- 2022-08-31 CN CN202280059464.2A patent/CN117897550A/zh active Pending
- 2022-08-31 US US18/687,378 patent/US12480410B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20240360767A1 (en) | 2024-10-31 |
| US12480410B2 (en) | 2025-11-25 |
| EP4396445B1 (fr) | 2025-05-21 |
| CN117897550A (zh) | 2024-04-16 |
| FR3126446A1 (fr) | 2023-03-03 |
| FR3126446B1 (fr) | 2024-07-12 |
| WO2023031556A1 (fr) | 2023-03-09 |
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