EP4569207A1 - Élément de protection pour un tambour de compresseur et procédé de réparation d'un tambour de compresseur - Google Patents
Élément de protection pour un tambour de compresseur et procédé de réparation d'un tambour de compresseurInfo
- Publication number
- EP4569207A1 EP4569207A1 EP23736389.0A EP23736389A EP4569207A1 EP 4569207 A1 EP4569207 A1 EP 4569207A1 EP 23736389 A EP23736389 A EP 23736389A EP 4569207 A1 EP4569207 A1 EP 4569207A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor drum
- protective element
- downstream
- intended
- upstream
- 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
- 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
- F01D5/3092—Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers
-
- 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
- F01D5/005—Repairing methods or devices
-
- 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
- F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
- F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
- F01D5/3038—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot the slot having inwardly directed abutment faces on both sides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
- F04D29/322—Blade mountings
-
- 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
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/37—Retaining components in desired mutual position by a press fit connection
-
- 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
- F05D2260/00—Function
- F05D2260/98—Lubrication
-
- 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
- F05D2300/509—Self lubricating materials; Solid lubricants
Definitions
- the present invention relates to a protective element of a low-pressure turbomachine compressor drum.
- the invention finds a particularly advantageous application for the repair of a used low pressure compressor drum.
- the invention could also be implemented at the end of production with a low pressure compressor drum in new condition.
- the operating principle of a turbomachine fan is to compress the air penetrating inside the engine. A large part of this air constitutes the secondary flow and the other part constitutes the primary flow. The latter passes through a low pressure compressor attached to the fan, through a high pressure compressor, through the combustion chamber, through the high pressure turbine and, finally, through the low pressure turbine before being ejected.
- the compression carried out by the blower is carried out in two phases. Following a first phase, a mobile blade provides acceleration to the air particles, by deflecting them relative to the axis of the engine.
- the movable blade comprises a plurality of blades mounted on a cylindrical hub called a "fan disk” driven in rotation by the low pressure turbine.
- a fixed blade slows down the air particles and transforms part of their speed into pressure.
- This fixed vane is called OGV (for "Outlet Guide Vane” in English) or "rectifier” because it brings the flow of air, accelerated by the movable vane, back into the axis of the engine.
- low pressure compressor located downstream of the fan.
- the low pressure compressor has moving blades mounted on a cylindrical part called a compressor drum as well as rectifiers made up of fixed blades.
- low pressure compressors can have 3 to 5 stages, a compressor stage being composed of a wheel of moving blades and a grid of corresponding rectifiers.
- the movable blades 1 are installed in a corresponding cell 2 of the compressor drum 4 via an introduction window 3 following the following steps: i - we insert, following the arrow F1, a first blade 1 into the cell 2 through the introduction window 3. ii - once the blade 1 is inserted, we shift it tangentially according to the arrow F2 in sliding it into the cell 2 in order to release the introduction window 3. The first blade 1 is then installed. ill - we can then insert the next blade and repeat the operation until all the blades 1 are installed inside the cell 2.
- micro-displacements of the blades 1 inside the cell 2 at the location of a contact surface between the surfaces 6 of the blade roots 7 and the surfaces 5 of the cell 2 can locally use said spans 5 of cell 2.
- the invention aims to effectively remedy the aforementioned drawbacks by proposing a protective element for a compressor drum intended to be placed at least in part between a blade root and the compressor drum comprising:
- a first side wall comprising an internal portion intended to cover an internal rounded portion of a cell of the compressor drum, a bearing portion intended to cover a blade root bearing of the cell, and an external portion intended to cover an external rounded portion of the compressor drum,
- a second side wall comprising a projecting portion intended to cooperate with a mounting groove made in a vertical face of the compressor drum.
- the invention thus makes it possible to restore the contact interface between the surfaces of the cell of the drum and the moving blades.
- the invention therefore makes it possible to install moving blades in the compressor drum in the same position as on a new drum coming out of manufacturing.
- the connecting wall is elastically deformable so as to allow mounting of the protective element on the compressor drum.
- said protective element comprises a recess intended to be placed opposite a portion of a blade insertion window made in the compressor drum.
- said protective element comprises at least one recess intended to be placed opposite a portion of a blade lock insertion window.
- the connecting wall comprises at least one opening for the passage of a projecting portion of a passage zone of a seal.
- said protective element is constituted by a folded sheet metal having a thickness of between 0.2mm and 0.4mm.
- said protective element is made of a nickel-based metallic material.
- the bearing portion is covered by a layer of lubricating varnish.
- a tangential length of the protection element is greater than a tangential length of one blade platform and less than or equal to a tangential length of five blade platforms.
- the invention also relates to a method of repairing a compressor drum comprising:
- machining step intended to eliminate wear on the bearing surfaces of the compressor drum so as to define a cell having upstream and downstream bearing surfaces having regular surfaces
- said method further comprises a step of machining a passage zone of a seal so as to present an alternation of projecting portions and flat portions for facilitate installation of a protective element on the compressor drum.
- each protective element is installed by applying a radial force to the protective element, such that a connecting wall of the protective element is deformed to allow a projecting portion of each protective element to cooperate with a corresponding mounting groove before returning to its initial planar shape so as to cover a corresponding external face of the compressor drum.
- said method further comprises a step of machining external faces of the compressor drum located respectively upstream and downstream of the cell.
- FIG. 1 Figure 1, already described, is a perspective view illustrating the assembly of the blades inside a low pressure compressor drum cell
- FIG. 2 Figure 2, already described, is a cross-sectional view of a cell of a compressor drum illustrating the wear of the bearing surfaces by the blade root;
- Figure 3 is a longitudinal sectional view of a front part of a turbomachine;
- Figure 4 is a perspective view of a low pressure compressor drum on which the repair method according to the invention is implemented;
- Figure 5 is a cross-sectional view of a cell of the low-pressure compressor drum on which the repair method according to the invention is implemented;
- Figure 6a is a partial perspective view of a cell of the compressor drum after a machining step of the repair process according to the invention
- Figure 6b is a detailed perspective view of the cell of Figure 6a highlighting the machining of a groove for receiving a seal;
- Figure 7a is a perspective view of an upstream protection element for a compressor drum according to the invention having a standard configuration
- Figure 7b is a perspective view of a downstream protection element for a compressor drum according to the invention having a standard configuration
- Figure 8a is a perspective view of an upstream protection element for a compressor drum according to the invention having a "lock" type configuration
- Figure 8b is a perspective view of a downstream protection element for a compressor drum according to the invention having a “lock” type configuration
- FIG. 9 shows the different stages of installation of a protective element according to the invention inside a cell of a low pressure compressor drum;
- Figure 10 is a perspective view of a cell of a low pressure compressor drum in which protection elements according to the invention have been installed;
- Figure 11 is a perspective view illustrating the installation of blades inside a low pressure compressor drum cell in which protection elements according to the invention have been installed;
- Figure 12 is a perspective view illustrating the positioning of the upstream and downstream protection elements according to the invention between the surfaces of a blade and the surfaces of a cell of a low pressure compressor drum.
- Figure 3 shows the front part of a turbomachine 10 comprising a fan 11 provided with a movable vane 12 intended to accelerate the air particles, deflecting them relative to the axis of the engine.
- the movable blade 12 comprises a plurality of blades 13 mounted on a cylindrical hub 14 called “fan disk” driven in rotation by the low pressure turbine.
- a fixed vane 15 located downstream of the movable vane 12 slows down the air particles and transforms part of their speed into pressure.
- This fixed vane 15 is called OGV (for "Outlet Guide vane") in English or “rectifier” because it brings the flow of air, accelerated by the movable vane 12, into the axis of the engine.
- a low pressure compressor 18 comprises moving blades 19 mounted on a cylindrical part called a low pressure compressor drum 20 as well as rectifiers 21 constituted by fixed blades.
- the low pressure compressor 18 can comprise 3 to 5 stages, a compressor stage being composed of a moving blade wheel 19 and a grid of corresponding rectifiers 21.
- the compressor drum 20 of axis X1 shown in Figure 4 has a cylindrical shape.
- the compressor drum 20 comprises a plurality of cells 24 corresponding to the number of stages of the low pressure compressor 18.
- Each cell 24 is a circumferential groove extending along a circumference of the drum 20 and intended to receive blade roots 25 , such that the blades 19 are angularly spaced regularly along a circumference of the compressor drum 20.
- the compressor drum 20 has a fixing interface 22 with the hub 14 of the fan.
- a cell 24 is delimited by a surface of the upstream blade root 26.1 against which abuts a surface of the blade root 25 of corresponding shape, an upstream internal rounded portion 27.1, a cell bottom 28, a downstream internal rounded portion 27.2 and a downstream blade root surface 26.2 against which abuts a downstream blade root surface 26.2 of corresponding shape.
- the upstream blade root surfaces 26.1 and downstream 26.2 form an angle not relative to the cell bottom 28, so that the cell 24 generally has a trapezoidal shape complementary to that of a foot blade 25. This ensures radial retention of the blades 19 when the compressor drum 20 is rotating.
- An upstream external rounded portion 29.1 and a downstream external rounded portion 29.2 are located respectively in an extension of the upstream 26.1 and downstream 26.2 blade root surface of the corresponding cell 24.
- the compressor drum 20 also includes an upstream external face 30.1 and a downstream external face 30.2.
- the external faces 30.1, 30.2 have an annular shape of axial orientation relative to the axis X1.
- the external faces 30.1, 30.2 are located radially towards the outside of the compressor drum 20 relative to the axis X1.
- An upstream vertical face 31.1 and a downstream vertical face 31.2 each extend in a radial plane relative to the axis X1 of the compressor drum 20.
- Each vertical face (upstream 31.1 respectively downstream 31.2) is located on the side opposite the corresponding face comprising the external rounded portion (upstream 29.1 respectively downstream 29.2), the blade root surface (upstream 26.1 respectively downstream 26.2), and the internal rounded portion (upstream 27.1 respectively downstream 27.2).
- the upstream vertical face 31.1, the upstream external face 30.1, the upstream external rounded portion 29.1, the upstream blade root surface 26.1, and the upstream internal rounded portion 27.1 are made in an upstream wall 35.1 of the cell 24.
- the downstream vertical face 31.2, the downstream external face 30.2, the downstream external rounded portion 29.2, the downstream blade root surface 26.2, and the downstream internal rounded portion 27.2 are made in a downstream wall 35.2 of the alveolus 24.
- the compressor drum 20 further comprises an insertion window 36 for the root of the blade 25 as well as two insertion windows 37 for the blade locks arranged in either side of the insertion window 36 of the blade root 25.
- a passage zone 40 of a seal is defined by two circumferential walls 41 coming from the external face 30.1 between which extends a groove 42 for receiving the seal (not shown).
- the seal is intended to be placed upstream of the cell 24. However, depending on the stage of the low pressure compressor 18, the seal may be installed upstream or downstream of the cell 24.
- a method of repairing a used low-pressure compressor drum 20 is described below.
- a step of machining the drum 20 is carried out intended to eliminate the wear of the bearing surfaces 26.1, 26.2 of the compressor drum 20 so as to define a cell 24 having upstream 26.1 and downstream 26.2 spans having regular surfaces.
- the machining is preferably carried out so that the cell 24 has an axisymmetric configuration, excluding insertion windows 36, 34 of the blade or lock.
- a step of machining the compressor drum 20 is also carried out aimed at allowing the installation of the protective elements 45.1, 45.2 described in more detail below.
- two mounting grooves 46.1, 46.2 are made respectively upstream and downstream of the cell 24 in the upstream vertical face 31.1 and in the downstream vertical face 31.2.
- a step of machining the upstream external faces 30.1 and downstream 30.2 of the low pressure compressor drum 20 is also carried out so as to obtain regular surfaces.
- the passage zone 40 of the seal is machined so as to form an alternation of projecting portions 48 and flat portions 49 to facilitate installation of a protective element 45.1, 45.2 on the low pressure compressor drum 20.
- an upstream protection element 45.1 and a downstream protection element 45.2 are installed in such a way that the protection elements 45.1, 45.2 cooperate respectively with a mounting groove 46.1, 46.2 produced correspondingly. in the drum 20 and respectively cover the upstream reach 26.1 and the downstream reach 26.2 of the cell 24.
- the protective elements 45.1, 45.2 thus fill the gap between the surfaces of the moving blade 19 and the surfaces of the cell 24 of the compressor drum 20, as shown in Figure 12.
- each protective element 45.1, 45.2 (upstream or downstream) is intended to be arranged at least in part between a blade root 25 and the compressor drum 20.
- the upstream protection element 45.1 also called “upstream foil” comprises a first upstream side wall 51.1, a second upstream side wall 52.1 and an upstream connecting wall 53.1 ensuring the connection between the first upstream side wall 51.1 and the second upstream side wall 52.1.
- the first upstream side wall 51.1 comprises an upstream internal portion 54.1 intended to cover the upstream internal rounded portion 27.1 of a cell 24, an upstream bearing portion 55.1 intended to cover an upstream blade root bearing 26.1 of the cell 24 and an upstream external portion 56.1 intended to cover an upstream external rounded portion 29.1 of the drum located in an extension of the upstream blade root span 26.1.
- the upstream span portion 55.1 forms a non-zero angle with respect to the upstream connecting wall 53.1.
- the upstream connecting wall 53.1 is intended to cover the upstream external face 30.1 of the compressor drum 20.
- the upstream connecting wall 53.1 has a planar shape.
- the upstream connecting wall 53.1 is elastically deformable so as to allow mounting of the upstream protection element 45.1 on the compressor drum 20.
- the upstream connecting wall 53 comprises at least one opening 60 for the passage of a projecting portion 48 of the joint passage zone 40. The number of passage openings depends on the configuration of the joint passage zone 40 at the location where the upstream protection element 45.1 is positioned.
- the second upstream side wall 52.1 comprises an upstream projecting portion 57.1 intended to cooperate with the upstream mounting groove 46.1 made in an upstream vertical face 31.1 of the drum.
- the upstream projecting portion 57.1 extends towards the inside of the upstream protection element 45.1.
- the second upstream side wall 52.1 has an S shape.
- the upstream protection element 45.1 has axisymmetry at the level of the cell 24.
- the first downstream side wall 51.2 comprises a downstream internal portion
- downstream span portion 55.2 forms a non-zero angle with respect to the downstream connecting wall 53.2.
- the downstream connecting wall 53.2 is intended to cover the downstream external face
- the downstream connecting wall 53.2 has a planar shape.
- the downstream connecting wall 53.2 is elastically deformable so as to allow mounting of the downstream protection element 45.2 on the compressor drum 20.
- the second downstream side wall 52.2 comprises a downstream projecting portion
- the downstream protection element 45.2 intended to cooperate with the downstream mounting groove 46.2 made in the downstream vertical face 31.2 of the drum 20.
- the downstream projecting portion 57.2 extends towards the inside of the downstream protection element 45.2.
- the second downstream side wall 52.2 has an S shape.
- the downstream protection element 45.2 has axisymmetry at the level of the cell 24.
- the upstream protection element 45.1 comprises an upstream recess 63.1 intended to be placed facing an upstream portion of a blade insertion window 36 made in the low pressure compressor drum 20.
- the upstream recess 63.1 is made in the upstream external portion 56.1 and in the upstream connecting wall 53.1 of the upstream protection element 45.1.
- the upstream protection element 45.1 also includes recesses 64.1 each intended to be arranged opposite a portion of a blade lock insertion window 37.
- the downstream protection element 45.2 comprises a downstream recess 63.2 intended to be arranged facing a downstream portion of an insertion window 36 blade made in the compressor drum 20.
- the downstream recess 63.2 is made in the downstream external portion 56.2 and in the downstream connecting wall 53.2 of the downstream protection element 45.2.
- the downstream protection element 45.2 also includes recesses 64.2 intended to be arranged opposite a portion of a blade lock insertion window 37.
- each protective element 45.1, 45.2 is constituted by a folded sheet having a thickness of between 0.2 mm and 0.4 mm.
- the thickness of the sheet can be adapted to the need for repair so as to compensate for the level of wear of the cell 24.
- the thin sheet is sufficiently deformable to allow the protective element 45.1, 45.2 to conform to the shape of the machined cell 24.
- the bearing portion 55.1, 55.2 may be covered with a layer of lubricating varnish. This makes it possible to improve the contact conditions between a moving blade 19 and the corresponding surface 26.1, 26.2 of the cell 24 to maximize the life of the compressor drum 20.
- a tangential dimension of the protective element 45.1, 45.2 is such that several moving blades 19, in particular between 1 and 5, can be in contact with the latter.
- a tangential length of the protective element 45.1, 45.2 is greater than a tangential length of a blade platform 65 (see Figure 11) in order to prevent the surfaces of a blade 19 from being in contact with two neighboring protective elements 45.1, 45.2 generating a discontinuity of contact between the moving blade 19 and the compressor drum 20.
- the tangential length of the protective element 45.1, 45.2 is less than or equal to a tangential length of five blade platforms 65 in order to allow deformation of the protective element 45.1, 45.2 for its mounting on the compressor drum 20. Indeed, a greater length of the protective element 45.1, 45.2 would increase its rigidity which would prevent to obtain the deformation necessary for its assembly on the compressor drum 20.
- a radial force is applied to the protective element 45.1, such that the connecting wall 53.1 is deformed to allow the projecting portion 57.1 of the protective element 45.1 to cooperate with the mounting groove 46.1.
- the connecting wall 53.1 then returns to its initial planar shape so as to cover the external face 30.1 of the compressor drum 20.
- the upstream protection element 45.1 or downstream 45.2 is held respectively around an upstream wall 35.1 or downstream 35.2 of a cell 24.
- a plurality of upstream protection elements 45.1 are thus arranged edge to edge to follow the circumference of an upstream wall 35.1 of the cell 24 of the drum.
- a plurality of downstream protection elements 45.2 are arranged edge to edge to follow the circumference of a downstream wall 35.2 of the cell 24 of the drum.
- the geometry of the protective element 45.1, 45.2 (standard or lock) is adapted, depending on the configuration of the cell 24 in the installation zone of the protective element 45.1, 45.2.
- the blades 19 can then be installed inside the cell 24 via the window introduction 36 following the method previously described with reference to Figure 1. Blade locks are then put in place via the windows 37 to prevent the blades 19 from moving inside the cell 24.
- the invention also relates to the assembly formed by a protective element 45.1, 45.2 and the compressor drum 20.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2208244A FR3138829B1 (fr) | 2022-08-11 | 2022-08-11 | Élément de protection d'un tambour de compresseur basse pression de turbomachine |
| PCT/EP2023/068326 WO2024032977A1 (fr) | 2022-08-11 | 2023-07-04 | Élément de protection pour un tambour de compresseur et procédé de réparation d'un tambour de compresseur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4569207A1 true EP4569207A1 (fr) | 2025-06-18 |
Family
ID=84331009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23736389.0A Pending EP4569207A1 (fr) | 2022-08-11 | 2023-07-04 | Élément de protection pour un tambour de compresseur et procédé de réparation d'un tambour de compresseur |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12509994B2 (fr) |
| EP (1) | EP4569207A1 (fr) |
| CN (1) | CN119855975B9 (fr) |
| FR (1) | FR3138829B1 (fr) |
| WO (1) | WO2024032977A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB630357A (en) * | 1947-10-07 | 1949-10-11 | Svenska Turbinfab Ab | Improvements in blade rings for radial flow elastic fluid machines |
| US4818182A (en) * | 1987-06-10 | 1989-04-04 | Societe Nationale D'etude Et De Construction De Moteurs D-Aviation (Snecma) | System for locking turbine blades on a turbine wheel |
| US6332617B1 (en) * | 1998-03-12 | 2001-12-25 | Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “SNECMA” | Leaktight seal of a circular vane stage |
| FR2981132A1 (fr) * | 2011-10-10 | 2013-04-12 | Snecma | Ensemble pour turbomachine a refroidissement de disque |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8922339D0 (en) * | 1989-10-04 | 1989-11-22 | Rolls Royce Plc | Improvements in or relating to labyrinth seal structures |
| FR2918702B1 (fr) * | 2007-07-13 | 2009-10-16 | Snecma Sa | Clinquant pour aube de turbomachine |
| ATE548540T1 (de) * | 2008-12-24 | 2012-03-15 | Techspace Aero Sa | Rotorstufe einer einteilig beschaufelten verdichtertrommel einer axialen strömungsmaschine und entsprechendes herstellungsverfahren. |
| US8251667B2 (en) * | 2009-05-20 | 2012-08-28 | General Electric Company | Low stress circumferential dovetail attachment for rotor blades |
| US9500083B2 (en) * | 2012-11-26 | 2016-11-22 | U.S. Department Of Energy | Apparatus and method to reduce wear and friction between CMC-to-metal attachment and interface |
| US11286796B2 (en) * | 2019-05-08 | 2022-03-29 | Raytheon Technologies Corporation | Cooled attachment sleeve for a ceramic matrix composite rotor blade |
| FR3107720B1 (fr) * | 2020-02-27 | 2023-04-28 | Safran Aircraft Engines | Aube de turbine, procédé de fabrication ou de reconditionnement du talon de ladite aube |
-
2022
- 2022-08-11 FR FR2208244A patent/FR3138829B1/fr active Active
-
2023
- 2023-07-04 US US19/102,058 patent/US12509994B2/en active Active
- 2023-07-04 CN CN202380062652.5A patent/CN119855975B9/zh active Active
- 2023-07-04 EP EP23736389.0A patent/EP4569207A1/fr active Pending
- 2023-07-04 WO PCT/EP2023/068326 patent/WO2024032977A1/fr not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB630357A (en) * | 1947-10-07 | 1949-10-11 | Svenska Turbinfab Ab | Improvements in blade rings for radial flow elastic fluid machines |
| US4818182A (en) * | 1987-06-10 | 1989-04-04 | Societe Nationale D'etude Et De Construction De Moteurs D-Aviation (Snecma) | System for locking turbine blades on a turbine wheel |
| US6332617B1 (en) * | 1998-03-12 | 2001-12-25 | Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “SNECMA” | Leaktight seal of a circular vane stage |
| FR2981132A1 (fr) * | 2011-10-10 | 2013-04-12 | Snecma | Ensemble pour turbomachine a refroidissement de disque |
| US9631495B2 (en) * | 2011-10-10 | 2017-04-25 | Snecma | Cooling for the retaining dovetail of a turbomachine blade |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2024032977A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119855975A (zh) | 2025-04-18 |
| US12509994B2 (en) | 2025-12-30 |
| WO2024032977A1 (fr) | 2024-02-15 |
| CN119855975B9 (zh) | 2025-10-17 |
| FR3138829A1 (fr) | 2024-02-16 |
| US20250257664A1 (en) | 2025-08-14 |
| FR3138829B1 (fr) | 2024-06-28 |
| CN119855975B (zh) | 2025-09-02 |
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