EP2766577A1 - Aube de stator de turbomachine comportant une portion bombée - Google Patents
Aube de stator de turbomachine comportant une portion bombéeInfo
- Publication number
- EP2766577A1 EP2766577A1 EP12780239.5A EP12780239A EP2766577A1 EP 2766577 A1 EP2766577 A1 EP 2766577A1 EP 12780239 A EP12780239 A EP 12780239A EP 2766577 A1 EP2766577 A1 EP 2766577A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- turbomachine
- radial
- curved
- radially
- 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
- 230000005484 gravity Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
-
- 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
- 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
- F01D5/16—Form or construction for counteracting blade vibration
-
- 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
- F04D29/26—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
- 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
- F04D29/403—Casings; Connections of working fluid 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
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
Definitions
- the invention relates to a turbomachine blade which is made to limit the coincidences of vibration frequencies of the blade with respect to the urging frequencies of the blade during operation of the turbomachine, which could lead to deterioration of dawn or his breakage.
- stator vanes During the operation of a turbomachine, the flow of gas along the stator vanes causes the vanes to vibrate.
- Each blade has one or more eigenfrequencies for which the amplitude of the vibration can become too important and cause the deterioration or breakage of the dawn.
- This curvature makes it possible to limit the vibrations of the blade in a frequency range corresponding to the operating conditions of the turbomachine, and also limits the risk of breakage of the blade.
- a curvature also reduces the efficiency and aerodynamic efficiency of the blade.
- the aim of the invention is to propose a turbomachine blade which is made in such a way that the at least one eigenfrequency of the blade is different from the biasing frequencies of the blade during operation of the turbomachine.
- the invention proposes a turbomachine compressor vane of principal orientation radial with respect to the main axis of the turbomachine, the blade having a radially inner foot portion, a radially outer portion of a head and a radially intermediate portion,
- the blade comprises a curved portion tangentially in one direction and at least a straight portion at the foot portion and / or at the head portion.
- Such a curved portion tangentially modifies the vibration response of the blade to vibrational stresses, and distances the so-called risk frequencies out of the range of operation of the blade.
- the radial length L1 of the curved portion is between 30% and 60% of the radial length L of the blade.
- the tangential amplitude A of the curved portion is between 1% and 5% of the radial length L of the blade.
- said rectilinear portion is inclined at an angle less than or equal to 30 ° with respect to the radial main direction of the blade.
- the domed portion is positioned radially at the foot portion.
- the domed portion is positioned radially at the head portion.
- the domed portion is positioned radially at the middle portion.
- the curved portion is convex tangentially towards the underside of the blade.
- the invention also proposes a turbomachine compressor stator comprising radial vanes distributed around the main axis of the turbomachine, characterized in that each blade is produced as defined above.
- the invention also proposes a turbomachine comprising a stator which comprises blades as defined above.
- FIG. 1 is a schematic perspective view of a blade having a convex portion according to the invention
- FIG. 2 is a representation of the tangential stacking law of the center of gravity of the sections of a blade according to the invention.
- the radial, tangential and axial orientations according to the reference R, T, A indicated in FIG. 1, in which the radial orientation is the main orientation of the dawn, will be adopted in a nonlimiting manner. and the tangential orientation is the orientation perpendicular to a main axial plane of the blade.
- FIG. 1 a blade 10 forming part of a stator (not shown) of the compressor of a turbomachine.
- the compressor comprises a plurality of blades 10 which are regularly distributed around the main axis of the turbomachine, to form an annular assembly, called a stator grid, which is traversed by a flow of gas, here air .
- the blade 10 extends radially generally along the orientation R with respect to the main axis of the turbomachine.
- the blade 10 has a radially inner portion 12, called the root of the blade, at which the blade 10 is attached to an inner shell of the compressor (not shown).
- the blade 10 has a radially outer portion 14 called the head of the blade, at which the blade 10 is fixed to an outer shell of the compressor (not shown).
- the blade 10 has an intermediate portion 16 connecting the foot 12 to the head 14 of the blade 10.
- the inner ferrule and the outer ferrule of the compressor delimit an annular duct called a vein, in which the flow of air circulates and interacts with the blade 10.
- the blade 10 also comprises a leading edge 18, which is located axially upstream in the direction of gas flow with respect to the blade 10, and a trailing edge 20 which is located axially downstream along the direction. gas flow with respect to the blade 10.
- the blade 10 is further arched and has a face 22 called intrados, which is located on the side opposite the camber and a face 24 called extrados which is located on the side of the arch.
- FIG. 2 shows a curve 26 representing the tangential stacking law of the center of gravity of the sections of the blade 10.
- This tangential stacking law corresponds to the position of the center of gravity of each section of the blade in a plane perpendicular to the radial main direction of the blade, with respect to a radial main axis of the blade 10.
- This curve 26 has a foot portion 28 corresponding to the foot 12 of the blade 10, a head portion 30 corresponding to the head 14 of the blade 10 and an intermediate portion 32 corresponding to the intermediate portion 16 of the blade 10 .
- the blade 10 is made in such a way that it comprises a part 34 which is curved tangentially and at least a rectilinear part.
- the curve 26 comprises a curved portion tangentially 36 corresponding to the convex portion 34.
- the curve 26 also comprises at least one rectilinear portion corresponding to the straight portion of the dawn 10.
- the rectilinear portion of the blade 10 is situated at the level of the foot 12 and / or at the level of the head 14 of the blade 10, depending on the position of the curved portion 34.
- the rectilinear portion of the curve 26 is situated at the level of the foot portion 28 and / or at the level of the head portion 30, as a function of the radial position of the convex portion 36.
- the convex portion 34 is located radially at the level of the foot 12 of the blade 10.
- the rectilinear portion is then located at the head 14 of the blade 10. Consequently, the portion curved 36 is located radially at the foot portion 28 and the leading portion 30 of the curve 26 is rectilinear.
- the convex portion 34 is located radially at the head 14 of the blade 10.
- the rectilinear portion is then located at the level of the root 12 of the blade 10.
- the curved portion 36 of the curve 26 is therefore located radially at the level of the head portion 30 and the foot portion 28 of the curve 26 is rectilinear.
- the convex portion 34 is located radially at the intermediate portion 16 of the blade 10. The foot 12 and the head 14 of the blade 10 each form a straight portion of the blade 10.
- the convex portion 36 is located radially at the intermediate portion 32 and the foot portion 28 and the leading portion 30 of the curve 26 are both straight.
- the blade 10 is curved in such a manner that the curved portion 34 is convex tangentially in the direction of the intrados 22, as represented in FIG.
- the convex portion 34 is curved toward the extrados 24.
- the dimensions of the convex portion 36 are defined with respect to the radial length "L" of the blade 10.
- the radial dimension "L1" of the convex portion 36 is between 30% and 60% of the radial dimension "L" of the blade 10.
- the tangential dimension "A" of the convex portion 36 is between 1% and 5% of the radial dimension "L" of the blade 10.
- each portion of head 28 and / or foot 30 which is rectilinear is inclined relative to the radial main direction of the blade by an angle whose value is less than or equal to 30 °.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1159255A FR2981396A1 (fr) | 2011-10-13 | 2011-10-13 | Aube de stator de turbomachine comportant une portion bombee |
PCT/FR2012/052314 WO2013054049A1 (fr) | 2011-10-13 | 2012-10-11 | Aube de stator de turbomachine comportant une portion bombée |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2766577A1 true EP2766577A1 (fr) | 2014-08-20 |
EP2766577B1 EP2766577B1 (fr) | 2018-12-05 |
Family
ID=47116069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12780239.5A Active EP2766577B1 (fr) | 2011-10-13 | 2012-10-11 | Aube de stator de turbomachine comportant une portion bombée |
Country Status (9)
Country | Link |
---|---|
US (1) | US10309419B2 (fr) |
EP (1) | EP2766577B1 (fr) |
JP (1) | JP2014528552A (fr) |
CN (1) | CN103857880B (fr) |
BR (1) | BR112014008623B1 (fr) |
CA (1) | CA2850901C (fr) |
FR (1) | FR2981396A1 (fr) |
RU (1) | RU2641768C2 (fr) |
WO (1) | WO2013054049A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3003598B1 (fr) | 2013-03-20 | 2018-04-06 | Safran Aircraft Engines | Aube et angle de diedre d'aube |
FR3010462B1 (fr) | 2013-09-11 | 2021-10-08 | Snecma | Secteur angulaire de redresseur pour compresseur de turbomachine comportant un joint d'etancheite a brosse |
US9938854B2 (en) * | 2014-05-22 | 2018-04-10 | United Technologies Corporation | Gas turbine engine airfoil curvature |
FR3043428B1 (fr) * | 2015-11-10 | 2020-05-29 | Safran Aircraft Engines | Aube de redresseur de turbomachine |
US10760587B2 (en) | 2017-06-06 | 2020-09-01 | Elliott Company | Extended sculpted twisted return channel vane arrangement |
CN107829985B (zh) * | 2017-09-28 | 2019-09-10 | 中国航发动力股份有限公司 | 一种航空发动机风扇叶片固有频率的修正方法 |
JP7260845B2 (ja) * | 2019-01-16 | 2023-04-19 | 株式会社Ihi | タービン動翼 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3745629A (en) * | 1972-04-12 | 1973-07-17 | Secr Defence | Method of determining optimal shapes for stator blades |
SU1613701A1 (ru) * | 1988-07-15 | 1990-12-15 | Харьковский авиационный институт им.Н.Е.Жуковского | Лопатка осевой турбомашины |
JPH06212902A (ja) | 1993-01-20 | 1994-08-02 | Toshiba Corp | タービン動翼 |
JP3697296B2 (ja) * | 1995-08-25 | 2005-09-21 | 株式会社東芝 | タービン動翼 |
FR2853022B1 (fr) * | 2003-03-27 | 2006-07-28 | Snecma Moteurs | Aube de redresseur a double courbure |
CN200949477Y (zh) | 2006-08-25 | 2007-09-19 | 哈尔滨汽轮机厂有限责任公司 | 一种大型全转速核电汽轮机末级叶片 |
US7794201B2 (en) | 2006-12-22 | 2010-09-14 | General Electric Company | Gas turbine engines including lean stator vanes and methods of assembling the same |
US7806653B2 (en) | 2006-12-22 | 2010-10-05 | General Electric Company | Gas turbine engines including multi-curve stator vanes and methods of assembling the same |
DE102008055824B4 (de) | 2007-11-09 | 2016-08-11 | Alstom Technology Ltd. | Dampfturbine |
RU2381388C1 (ru) * | 2008-07-07 | 2010-02-10 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" | Рабочая лопата 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 |
DE102010014556B4 (de) * | 2010-04-10 | 2013-01-03 | Mtu Aero Engines Gmbh | Leitschaufel eines Verdichters |
-
2011
- 2011-10-13 FR FR1159255A patent/FR2981396A1/fr active Pending
-
2012
- 2012-10-11 BR BR112014008623-0A patent/BR112014008623B1/pt active IP Right Grant
- 2012-10-11 RU RU2014118768A patent/RU2641768C2/ru active
- 2012-10-11 JP JP2014535148A patent/JP2014528552A/ja active Pending
- 2012-10-11 CA CA2850901A patent/CA2850901C/fr active Active
- 2012-10-11 US US14/349,000 patent/US10309419B2/en active Active
- 2012-10-11 WO PCT/FR2012/052314 patent/WO2013054049A1/fr active Application Filing
- 2012-10-11 EP EP12780239.5A patent/EP2766577B1/fr active Active
- 2012-10-11 CN CN201280049007.1A patent/CN103857880B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013054049A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2981396A1 (fr) | 2013-04-19 |
CN103857880B (zh) | 2016-07-13 |
EP2766577B1 (fr) | 2018-12-05 |
US10309419B2 (en) | 2019-06-04 |
JP2014528552A (ja) | 2014-10-27 |
CA2850901C (fr) | 2019-10-29 |
CA2850901A1 (fr) | 2013-04-18 |
BR112014008623A2 (pt) | 2017-04-18 |
US20140248144A1 (en) | 2014-09-04 |
CN103857880A (zh) | 2014-06-11 |
WO2013054049A1 (fr) | 2013-04-18 |
RU2014118768A (ru) | 2015-11-20 |
BR112014008623B1 (pt) | 2021-11-09 |
RU2641768C2 (ru) | 2018-01-22 |
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