EP2872782A1 - Aube de turbomachine ayant un profil configuré de manière à obtenir des propriétés aérodynamiques et mécaniques améliorées - Google Patents
Aube de turbomachine ayant un profil configuré de manière à obtenir des propriétés aérodynamiques et mécaniques amélioréesInfo
- Publication number
- EP2872782A1 EP2872782A1 EP13744659.7A EP13744659A EP2872782A1 EP 2872782 A1 EP2872782 A1 EP 2872782A1 EP 13744659 A EP13744659 A EP 13744659A EP 2872782 A1 EP2872782 A1 EP 2872782A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- turbomachine
- height
- tangential
- blades
- 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
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
-
- 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
- F04D29/324—Blades
-
- 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
-
- 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
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
-
- 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
- F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines
Definitions
- Turbomachine blade having a profile configured to obtain improved aerodynamic and mechanical properties.
- the present invention relates to the field of turbomachine blades, and finds a particular application for metal blades of the blower, the high-pressure compressor or the low-pressure compressor of a turbomachine.
- the blades of a turbomachine are subjected to high speeds of rotation; the aerodynamic and mechanical performance of the blades are therefore crucial to ensure proper operation of the turbomachine.
- this document proposes to improve the aerodynamic performance of a blade by giving it a geometry described as the combination of a relatively low belly and pronounced with sharply backward sharping in the longitudinal and tangential directions.
- the present invention aims to remedy this situation by proposing a blade combining high aerodynamic and mechanical performance.
- the invention proposes a turbomachine blade comprising a plurality of sections of blades stacked along a radial axis, each blade section extending along a longitudinal axis between a leading edge and a trailing edge, and along a tangential axis between an intrados face and an extrados face, the blade sections being distributed according to longitudinal distribution laws Xg and tangential Yg defining the positioning of their respective centers of gravity with respect to said longitudinal and tangential axes according to the height dawn extending from the foot of dawn to its head, characterized in that, in a head section of the dawn located between 90 and 100% of the height H of dawn
- said first and second heights are between 90% and 95% of the height H of the blade.
- said first and second heights are equal.
- the invention also relates to a turbomachine fan, a low pressure compressor or a high pressure compressor comprising a plurality of vanes as defined above.
- the invention further relates to a turbomachine comprising a plurality of blades as defined above.
- FIG. 1 is a partial longitudinal sectional view of a fan of a turbomachine according to the state of the art.
- FIGS. 2 and 3 are examples of curves showing the evolution of the laws Xg and Yg respectively over part of the height of a blade according to the invention.
- FIG. 6 is a graph showing the efficiency gain obtained by a blade according to the invention with respect to known blades.
- FIG. 1 schematically and partially shows the fan 2 of a turbomachine, typically a turbojet having a use in the aeronautics.
- the fan 2 consists of a plurality of vanes 4 regularly spaced around a disk 6 (commonly called a hub) of a rotor centered on a longitudinal axis XX of the fan 2.
- Each blade 4 commonly comprises a blade 8, a foot 10 and a head 12.
- the root 10 of the blade is mounted on the disc 6 of the rotor and is connected to the blade 8 via a platform 14 delimiting the gaseous flow 16 passing through the fan 2.
- the disk 6 of the rotor is rotated about the longitudinal axis XX in the direction indicated by the arrow 18.
- the head 12 of the blade is in turn facing the inner face 20 of a fixed casing of the blower, this face 20 also defining the vein 16, which is therefore between the platform 14 and the face internal 20 of the housing.
- the blade 8 is composed of a plurality of blade sections 22 which are stacked along a radial axis 7.-7. perpendicular to the X-X axis.
- the blade sections 22 are located at increasing radial distances from the longitudinal axis X-X.
- the resulting stack forms an aerodynamic surface which extends along the longitudinal axis XX between a leading edge 24 and a trailing edge 26 and along a tangential axis YY of the fan between a lower face, opposite the traction, and an extrados face, the side of the traction (not shown in the figures).
- the blade has a height H, measured from the foot 10 to the head 12 of the blade along the radial axis Z-Z.
- the section of the blade situated at 0% of the height H corresponds to the radius of intersection between the leading edge 24 and the internal flow vein of the gas flow, and the section located at 100% of the height H corresponds to the point at the intersection radius between the leading edge 24 and the upper flow of the gaseous flow stream.
- the longitudinal axis X-X, the tangential axis Y-Y and the radial axis Z-Z of the blower thus defined form a direct orthonormal trihedron.
- the present invention applies to different types of moving blades of a turbomachine; for example the blades of the fan, the high pressure compressor, that is to say the compressor upstream of the direction of flow flow, and high pressure compressor, that is to say the compressor downstream in the flow direction of the flow.
- FIG. 1 which shows a partial view of a turbomachine fan, is purely illustrative, and in particular makes it possible to define the various axes of the turbomachine.
- Figures 2 and 3 are examples of curves showing the evolution of laws Xg and Yg respectively on a portion of the height of a blade according to the invention.
- the present invention proposes a change in the direction of the slope of these distribution laws Xg and Yg in the head portion of the blade, that is to say in the upper 10% of the dawn forming the head 12.
- a hook of these two localized distribution laws is thus observed for height values between 90 and 100% of the height H of the blade from its base. More generally, for each distribution law Xg and Yg, there is a height of between 90% and 100% of the height H of the blade from which these two distribution laws decrease.
- These heights are typically between 90% and 95% of the height H of the blade.
- the value of the height between 90% and 100% of the height H of the blade from which the distribution law Xg decreases and the value of the height between 90% and 100% of the height H of the dawn from which the distribution law Yg decreases may be identical or distinct.
- the laws of longitudinal distribution Xg and tangential Yg defining the positioning of the respective centers of gravity of the sections of blades formed forming the blade, with respect to the longitudinal axes XX and tangential YY typically comprise a single change of direction of their slope for values height between 90 and 100% of the height H of the blade from its base.
- the dawn according to the invention therefore has a profile which, between 90 and 100% of its height from its base, moves towards the leading edge 24 and towards the upper surface, which corresponds to a tilting forward and towards the upper surface of the head portion of dawn.
- Figures 3 and 4 respectively show an example of longitudinal distribution law Xg and tangential Yg over the entire height of the blade.
- Figure 6 is a graph showing the efficiency gain obtained by a blade according to the invention with respect to known blades.
- This figure shows three curves 100, 102 and 104, which illustrate the yield obtained respectively with a blade according to the invention, with a blade according to the state of the art having no inflection in the head, and with a blade according to the state of the art having an inflection of its longitudinal distribution law Xg at the head.
- the present invention improves the efficiency in the upper part of the blade. It is further observed that the modification of the head of the blade causes a change in performance over a much larger range of heights; by modifying the geometry of 10% of the dawn one acts on the aerodynamic efficiency of more than 50% of the dawn.
- the present invention makes it possible to increase the mechanical strength of the blade.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1256746A FR2993323B1 (fr) | 2012-07-12 | 2012-07-12 | Aube de turbomachine ayant un profil configure de maniere a obtenir des proprietes aerodynamiques et mecaniques ameliorees |
| PCT/FR2013/051522 WO2014009628A1 (fr) | 2012-07-12 | 2013-06-28 | Aube de turbomachine ayant un profil configuré de manière à obtenir des propriétés aérodynamiques et mécaniques améliorées |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2872782A1 true EP2872782A1 (fr) | 2015-05-20 |
| EP2872782B1 EP2872782B1 (fr) | 2017-03-08 |
Family
ID=46826816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13744659.7A Active EP2872782B1 (fr) | 2012-07-12 | 2013-06-28 | Aube de turbomachine ayant un profil configuré de manière à obtenir des propriétés aérodynamiques et mécaniques améliorées |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US9995156B2 (fr) |
| EP (1) | EP2872782B1 (fr) |
| JP (2) | JP2015522132A (fr) |
| CN (1) | CN104583604B (fr) |
| BR (1) | BR112015000676B1 (fr) |
| CA (1) | CA2878827C (fr) |
| FR (1) | FR2993323B1 (fr) |
| RU (1) | RU2624677C2 (fr) |
| WO (1) | WO2014009628A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3043428B1 (fr) * | 2015-11-10 | 2020-05-29 | Safran Aircraft Engines | Aube de redresseur de turbomachine |
| WO2020095470A1 (fr) | 2018-11-05 | 2020-05-14 | 株式会社Ihi | Pale de rotor de machine à fluide à écoulement axial |
| FR3129686B1 (fr) | 2021-11-29 | 2024-07-12 | Safran Aircraft Engines | Aube pour une soufflante carénée d’une turbomachine |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB680036A (en) * | 1949-04-26 | 1952-10-01 | Francis Henry Keast | Blading for rotary compressors, turbines and the like |
| US4012172A (en) * | 1975-09-10 | 1977-03-15 | Avco Corporation | Low noise blades for axial flow compressors |
| SU1613701A1 (ru) * | 1988-07-15 | 1990-12-15 | Харьковский авиационный институт им.Н.Е.Жуковского | Лопатка осевой турбомашины |
| US5088892A (en) * | 1990-02-07 | 1992-02-18 | United Technologies Corporation | Bowed airfoil for the compression section of a rotary machine |
| JPH07139302A (ja) * | 1993-11-17 | 1995-05-30 | Ishikawajima Harima Heavy Ind Co Ltd | ブレードの構造 |
| DE19812624A1 (de) * | 1998-03-23 | 1999-09-30 | Bmw Rolls Royce Gmbh | Rotor-Schaufelblatt einer Axialströmungsmaschine |
| US6331100B1 (en) * | 1999-12-06 | 2001-12-18 | General Electric Company | Doubled bowed compressor airfoil |
| DE10054244C2 (de) * | 2000-11-02 | 2002-10-10 | Honda Motor Co Ltd | Turbinenblattanordnung und Turbinenblatt für eine Axialturbine |
| US6508630B2 (en) * | 2001-03-30 | 2003-01-21 | General Electric Company | Twisted stator vane |
| FR2851798B1 (fr) * | 2003-02-27 | 2005-04-29 | Snecma Moteurs | Aube en fleche de turboreacteur |
| DE102005025213B4 (de) * | 2005-06-01 | 2014-05-15 | Honda Motor Co., Ltd. | Schaufel einer Axialströmungsmaschine |
| FR2908152B1 (fr) * | 2006-11-08 | 2009-02-06 | Snecma Sa | Aube en fleche de turbomachine |
| GB0701866D0 (en) * | 2007-01-31 | 2007-03-14 | Rolls Royce Plc | Tone noise reduction in turbomachines |
| US8083487B2 (en) * | 2007-07-09 | 2011-12-27 | General Electric Company | Rotary airfoils and method for fabricating same |
| EP2017466A1 (fr) * | 2007-07-20 | 2009-01-21 | Siemens Aktiengesellschaft | Pale de rotor d'éolienne et rotor de turbine |
| RU2354854C1 (ru) * | 2007-12-20 | 2009-05-10 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения имени П.И. Баранова" | Рабочее колесо высокооборотного осевого вентилятора или компрессора |
| US8167567B2 (en) * | 2008-12-17 | 2012-05-01 | United Technologies Corporation | Gas turbine engine airfoil |
| JP4923073B2 (ja) * | 2009-02-25 | 2012-04-25 | 株式会社日立製作所 | 遷音速翼 |
| FR2969230B1 (fr) * | 2010-12-15 | 2014-11-21 | Snecma | Aube de compresseur a loi d'empilage amelioree |
| JP5703750B2 (ja) * | 2010-12-28 | 2015-04-22 | 株式会社Ihi | ファン動翼及びファン |
| US9062554B2 (en) * | 2012-01-03 | 2015-06-23 | General Electric Company | Gas turbine nozzle with a flow groove |
-
2012
- 2012-07-12 FR FR1256746A patent/FR2993323B1/fr active Active
-
2013
- 2013-06-28 US US14/414,307 patent/US9995156B2/en active Active
- 2013-06-28 EP EP13744659.7A patent/EP2872782B1/fr active Active
- 2013-06-28 JP JP2015521037A patent/JP2015522132A/ja not_active Withdrawn
- 2013-06-28 CN CN201380043045.0A patent/CN104583604B/zh active Active
- 2013-06-28 RU RU2015104651A patent/RU2624677C2/ru active
- 2013-06-28 CA CA2878827A patent/CA2878827C/fr active Active
- 2013-06-28 BR BR112015000676-0A patent/BR112015000676B1/pt active IP Right Grant
- 2013-06-28 WO PCT/FR2013/051522 patent/WO2014009628A1/fr not_active Ceased
-
2018
- 2018-05-08 JP JP2018089707A patent/JP6649981B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP6649981B2 (ja) | 2020-02-19 |
| BR112015000676B1 (pt) | 2021-09-28 |
| RU2015104651A (ru) | 2016-08-27 |
| FR2993323B1 (fr) | 2014-08-15 |
| CA2878827C (fr) | 2019-08-27 |
| RU2624677C2 (ru) | 2017-07-05 |
| US9995156B2 (en) | 2018-06-12 |
| US20150192024A1 (en) | 2015-07-09 |
| CA2878827A1 (fr) | 2014-01-16 |
| WO2014009628A1 (fr) | 2014-01-16 |
| BR112015000676A2 (pt) | 2017-06-27 |
| JP2015522132A (ja) | 2015-08-03 |
| CN104583604A (zh) | 2015-04-29 |
| JP2018155248A (ja) | 2018-10-04 |
| FR2993323A1 (fr) | 2014-01-17 |
| CN104583604B (zh) | 2017-04-12 |
| EP2872782B1 (fr) | 2017-03-08 |
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