EP4288668A1 - Ensemble redresseur pour compresseur de turbomachine d'aeronef - Google Patents
Ensemble redresseur pour compresseur de turbomachine d'aeronefInfo
- Publication number
- EP4288668A1 EP4288668A1 EP22704334.6A EP22704334A EP4288668A1 EP 4288668 A1 EP4288668 A1 EP 4288668A1 EP 22704334 A EP22704334 A EP 22704334A EP 4288668 A1 EP4288668 A1 EP 4288668A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator vanes
- shroud
- compressor
- outer shroud
- rectifier assembly
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
-
- 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
- F01D11/005—Sealing means between non relatively rotating elements
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
-
- 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
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- 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
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
- F05D2230/238—Soldering
-
- 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
- F05D2240/10—Stators
- F05D2240/11—Shroud seal segments
-
- 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
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
- F05D2240/125—Fluid guiding means, e.g. vanes related to the tip of a stator vane
-
- 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
- F05D2240/80—Platforms for stationary or moving 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
- F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking
Definitions
- the present invention relates to an aircraft turbomachine compressor.
- Document EP 2 093 383 A1 describes a compressor in which the stator vanes are fixed to the inner shroud.
- the outer shroud is subjected to great mechanical stresses, in particular in turbomachine architectures where it is located on the path of the main force of the thrust. Part of these mechanical stresses originate from the stator vanes which are fixed to this outer shroud.
- An object of the present invention is to reduce the mechanical stresses in an aircraft turbomachine.
- the invention provides a rectifier assembly for an aircraft turbomachine compressor, comprising: • an internal shroud,
- stator vanes in which the stator vanes are attached only to the inner shroud and are in non-immobilizing mechanical contact with the outer shroud; wherein the outer shroud includes a groove receiving radially outer ends of the stator vanes; characterized in that the groove extends, axially, to a downstream end of the outer shroud.
- stator vanes are fixed only on the inner shroud, which makes it possible to avoid the places of concentration of mechanical stresses on the outer shroud.
- Contact with the outer shroud is non-immobilizing, i.e. it does not involve immobilization of the stator vanes relative to the outer shroud.
- Such contact avoids transmission of force between the blade and the outer shroud via the radially outer end of the blade, while also avoiding air leaks between the outer shroud and the radially outer end of the dawn.
- the inner shroud is attached to the other elements of the turbomachine via the stator vanes and the outer shroud, a person skilled in the art would therefore not think of removing the attachment to the outer shroud.
- the inner shroud is provided to be attached to the other elements of the turbomachine by other means. These means are preferably more rigid than in the prior art (generally in constrained supports). The force transmission chain (turbomachine/inner shroud/blade) is thus more rigid than in the prior art.
- stator vanes comprise, at their radially outer end, a platform extending downstream.
- a sealing element in the form of a gasket is particularly advantageous in this case.
- stator vanes fixed only to the inner shroud and in non-immobilizing mechanical contact with the outer shroud are the stator vanes furthest downstream of the first compressor. This makes it possible to fix the inner shroud downstream of the first compressor in a simpler way than if the inner shroud on which the stator vanes are fixed was axially in the middle of the first compressor.
- FIG. 4 is a flowchart of a method for manufacturing a rectifier assembly according to one embodiment of the invention
- the first compressor 120 is provided with at least one row of rotor blades 122 followed directly downstream by a row of stator vanes 10, each row of stator vanes 10 forming a rectifier assembly 1.
- the invention can be applied to any or all of the rectifier assemblies of the first compressor 120, and in particular to the most downstream rectifier assembly of the first compressor 120.
- FIG. 2 illustrates a stator vane 10 of a rectifier assembly 1 according to one embodiment of the invention.
- the stator vane 10 is fixed, preferably by a weld 11, by its radially inner end 12, to an inner shroud 20.
- the fixing between the stator vane 10 and the inner shroud 20 prevents any relative movement.
- the stator vane 10 is in non-immobilizing mechanical contact, for example via a sealing element 31, via its radially outer end 13, with an outer shroud 30.
- the element seal 31 is located, at least partially, in a groove 35, preferably circumferential, in the outer shroud 30.
- the groove 35 preferably receives the radially outer ends 13 of all the stator vanes 10 of the rectifier assembly 1 .
- Figures 3a to 3c illustrate three embodiments of the invention, which differ, on the one hand, by the fixing of the inner shroud 20 to the intermediate support casing 40, and, on the other hand, by the mechanical coupling between the stator vane 10 and the outer ring 30.
- Those skilled in the art will understand that all the ways of fixing the inner ring 20 to the intermediate support casing 40 are compatible with all the mechanical couplings between the blade stator 10 and outer shroud 30.
- the groove 35 extends to the downstream end 32 of the outer shroud 30. It is filled with a flexible material in contact with radially outer ends 13 of the stator vanes 10 , and which forms the sealing element 31 . This is located at a radially outer position relative to the radially outer ends 13 of the stator vanes 10 and extends axially along the radially outer ends 13 of the stator vanes 10.
- the downstream end 22 of the inner shroud 20 is fixed to the intermediate support casing 40 by fixing means 52, for example screws.
- Figures 4, 5a to 5d and 6 illustrate certain steps of a method 200 of manufacturing a rectifier assembly 1 according to the invention, and of its assembly with the intermediate support casing 40.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE20215074A BE1029074B1 (fr) | 2021-02-02 | 2021-02-02 | Ensemble redresseur pour compresseur de turbomachine d'aeronef |
| PCT/EP2022/052240 WO2022167373A1 (fr) | 2021-02-02 | 2022-01-31 | Ensemble redresseur pour compresseur de turbomachine d'aeronef |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4288668A1 true EP4288668A1 (fr) | 2023-12-13 |
| EP4288668B1 EP4288668B1 (fr) | 2026-01-14 |
Family
ID=74572577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22704334.6A Active EP4288668B1 (fr) | 2021-02-02 | 2022-01-31 | Ensemble redresseur pour compresseur de turbomachine d'aeronef |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12320275B2 (fr) |
| EP (1) | EP4288668B1 (fr) |
| CN (1) | CN116802405A (fr) |
| BE (1) | BE1029074B1 (fr) |
| WO (1) | WO2022167373A1 (fr) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210087942A1 (en) * | 2019-09-17 | 2021-03-25 | General Electric Company Polska Sp. Z O.O. | Turbine engine assembly |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778184A (en) * | 1972-06-22 | 1973-12-11 | United Aircraft Corp | Vane damping |
| US4861229A (en) * | 1987-11-16 | 1989-08-29 | Williams International Corporation | Ceramic-matrix composite nozzle assembly for a turbine engine |
| US6464456B2 (en) * | 2001-03-07 | 2002-10-15 | General Electric Company | Turbine vane assembly including a low ductility vane |
| EP1433925A1 (fr) * | 2002-12-24 | 2004-06-30 | Techspace Aero S.A. | Procédé de solidarisation d'une aube sur virole |
| US8511983B2 (en) * | 2008-02-19 | 2013-08-20 | United Technologies Corporation | LPC exit guide vane and assembly |
| FR2950116B1 (fr) * | 2009-09-15 | 2011-12-09 | Snecma | Redresseur de compresseur pour turbomachine, comprenant des tetes d'aubes montees a l'aide d'un materiau amortisseur de vibrations sur la virole exterieure |
| US9951639B2 (en) * | 2012-02-10 | 2018-04-24 | Pratt & Whitney Canada Corp. | Vane assemblies for gas turbine engines |
| EP2799721B8 (fr) | 2013-05-03 | 2016-12-07 | Safran Aero Booster S.A. | Redresseur de turbomachine axiale avec aubes auxiliaires en pieds d'aubes |
| US10577951B2 (en) * | 2016-11-30 | 2020-03-03 | Rolls-Royce North American Technologies Inc. | Gas turbine engine with dovetail connection having contoured root |
| US11319822B2 (en) * | 2020-05-06 | 2022-05-03 | Rolls-Royce North American Technologies Inc. | Hybrid vane segment with ceramic matrix composite airfoils |
-
2021
- 2021-02-02 BE BE20215074A patent/BE1029074B1/fr active IP Right Grant
-
2022
- 2022-01-31 EP EP22704334.6A patent/EP4288668B1/fr active Active
- 2022-01-31 CN CN202280012639.4A patent/CN116802405A/zh active Pending
- 2022-01-31 WO PCT/EP2022/052240 patent/WO2022167373A1/fr not_active Ceased
- 2022-01-31 US US18/263,943 patent/US12320275B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210087942A1 (en) * | 2019-09-17 | 2021-03-25 | General Electric Company Polska Sp. Z O.O. | Turbine engine assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| US12320275B2 (en) | 2025-06-03 |
| CN116802405A (zh) | 2023-09-22 |
| BE1029074B1 (fr) | 2022-08-29 |
| WO2022167373A1 (fr) | 2022-08-11 |
| US20240117747A1 (en) | 2024-04-11 |
| EP4288668B1 (fr) | 2026-01-14 |
| BE1029074A1 (fr) | 2022-08-25 |
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