EP0475329A3 - Blade vows for a turbomachine with suction slots - Google Patents

Blade vows for a turbomachine with suction slots Download PDF

Info

Publication number
EP0475329A3
EP0475329A3 EP19910115218 EP91115218A EP0475329A3 EP 0475329 A3 EP0475329 A3 EP 0475329A3 EP 19910115218 EP19910115218 EP 19910115218 EP 91115218 A EP91115218 A EP 91115218A EP 0475329 A3 EP0475329 A3 EP 0475329A3
Authority
EP
European Patent Office
Prior art keywords
blade
turbomachine
slit
vows
suction
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
Application number
EP19910115218
Other languages
French (fr)
Other versions
EP0475329A2 (en
EP0475329B1 (en
Inventor
Michel Vincent De Paul
Francois Detanne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Holdings SA
Original Assignee
GEC Alsthom SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GEC Alsthom SA filed Critical GEC Alsthom SA
Publication of EP0475329A2 publication Critical patent/EP0475329A2/en
Publication of EP0475329A3 publication Critical patent/EP0475329A3/en
Application granted granted Critical
Publication of EP0475329B1 publication Critical patent/EP0475329B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F01D5/145—Means for influencing boundary layers or secondary circulations
    • 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
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/914—Device to control boundary layer

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)

Abstract

Blade grating for a turbomachine comprising blades (A, B) arranged between a floor and a ceiling, and the floor and/or ceiling of which is equipped with a suction slit (4, 4') in the vicinity of at least some blades (A), said slit (4, 4') having a first end (6) arranged along the suction face in a region of the blade (A) extending from the zone of maximum curvature (7) to the neck (8) of the channel (3) between this blade (A) and the adjacent (B), characterised in that said slit (4, 4') is oriented along an isobaric line and is of such a length that the second end (9) is set apart from the suction face of the blade (A) at a distance of between one quarter and one half of the width of the neck (8) of the channel (3). <??>Turbomachine comprising this blade grating. <??>Reduction of secondary losses and improvement of performance. <IMAGE>
EP91115218A 1990-09-13 1991-09-09 Blade vows for a turbomachine with suction slots Expired - Lifetime EP0475329B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9011336A FR2666846B1 (en) 1990-09-13 1990-09-13 VANE GRILLE FOR TURBOMACHINE PROVIDED WITH SUCTION SLOTS IN THE CEILING AND / OR IN THE FLOOR AND TURBOMACHINE COMPRISING SUCH GRIDS.
FR9011336 1990-09-13

Publications (3)

Publication Number Publication Date
EP0475329A2 EP0475329A2 (en) 1992-03-18
EP0475329A3 true EP0475329A3 (en) 1992-06-03
EP0475329B1 EP0475329B1 (en) 1994-11-30

Family

ID=9400301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115218A Expired - Lifetime EP0475329B1 (en) 1990-09-13 1991-09-09 Blade vows for a turbomachine with suction slots

Country Status (10)

Country Link
US (1) US5232338A (en)
EP (1) EP0475329B1 (en)
JP (1) JPH04279701A (en)
CN (1) CN1060891A (en)
AT (1) ATE114780T1 (en)
CS (1) CS281991A3 (en)
DE (1) DE69105418T2 (en)
FR (1) FR2666846B1 (en)
MX (1) MX9101073A (en)
ZA (1) ZA917326B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2675536B1 (en) * 1991-04-19 1994-12-09 Alsthom Gec TURBINE WITH ACTION WITH ROTOR DRUM AND IMPROVEMENT WITH THESE TURBINES.
US5632598A (en) * 1995-01-17 1997-05-27 Dresser-Rand Shrouded axial flow turbo machine utilizing multiple labrinth seals
DE19620828C1 (en) * 1996-05-23 1997-09-04 Siemens Ag Steam turbine shaft incorporating cooling circuit
US6004095A (en) * 1996-06-10 1999-12-21 Massachusetts Institute Of Technology Reduction of turbomachinery noise
US5904470A (en) * 1997-01-13 1999-05-18 Massachusetts Institute Of Technology Counter-rotating compressors with control of boundary layers by fluid removal
EP0894944A1 (en) * 1997-07-29 1999-02-03 Siemens Aktiengesellschaft Turbine blading
ATE371097T1 (en) 1998-02-26 2007-09-15 Allison Advanced Dev Co DISPENSING SYSTEM FOR A COMPRESSOR WALL AND OPERATING METHOD
US6595743B1 (en) * 1999-07-26 2003-07-22 Impsa International Inc. Hydraulic seal for rotary pumps
US6632069B1 (en) * 2001-10-02 2003-10-14 Oleg Naljotov Step of pressure of the steam and gas turbine with universal belt
US20040101410A1 (en) * 2001-10-02 2004-05-27 Oleg Naljotov Axial flow fluid machine
US6682301B2 (en) * 2001-10-05 2004-01-27 General Electric Company Reduced shock transonic airfoil
GB0200992D0 (en) * 2002-01-17 2002-03-06 Rolls Royce Plc Gas turbine cooling system
WO2004099572A1 (en) * 2003-04-18 2004-11-18 Oleg Naljotov Steam/gas turbine pressure stage with universal shroud
US20070069477A1 (en) * 2003-06-20 2007-03-29 Elliott Company Stepped labyrinth damper seal
WO2004113771A2 (en) * 2003-06-20 2004-12-29 Elliott Company Hybrid abradable labyrinth damper seal
JP4346412B2 (en) 2003-10-31 2009-10-21 株式会社東芝 Turbine cascade
DE10355241A1 (en) * 2003-11-26 2005-06-30 Rolls-Royce Deutschland Ltd & Co Kg Fluid flow machine with fluid supply
DE10355240A1 (en) * 2003-11-26 2005-07-07 Rolls-Royce Deutschland Ltd & Co Kg Fluid flow machine with fluid removal
DE102007027427A1 (en) * 2007-06-14 2008-12-18 Rolls-Royce Deutschland Ltd & Co Kg Bucket cover tape with overhang
DE102008029605A1 (en) * 2008-06-23 2009-12-24 Rolls-Royce Deutschland Ltd & Co Kg Bucket cover tape with passage
FR2958694B1 (en) * 2010-04-07 2014-04-18 Snecma ENGINE COMPRESSOR, IN PARTICULAR AIRCRAFT TURBOJET ENGINE, EQUIPPED WITH AN AIR-TESTING SYSTEM
CN102364098A (en) * 2011-11-18 2012-02-29 三一电气有限责任公司 Wind generating set and blade thereof
EP2713009B1 (en) * 2012-09-26 2015-03-11 Alstom Technology Ltd Cooling method and system for cooling blades of at least one blade row in a rotary flow machine
CN109413711B (en) * 2018-10-17 2021-02-05 中国运载火箭技术研究院 Aircraft collaborative information network protocol stack
US11674406B2 (en) * 2021-08-06 2023-06-13 Pratt & Whitney Canada Corp. Variable gap between impeller rotor and static structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146352A (en) * 1975-10-31 1979-03-27 Hitachi, Ltd. Diaphragms for axial flow fluid machines
WO1980000728A1 (en) * 1978-10-05 1980-04-17 Alsthom Atlantique Blade grid for a turbine and turbine comprising such a blade grid
FR2438157A1 (en) * 1978-10-05 1980-04-30 Alsthom Atlantique BLADE GRILLE FOR TURBINE OR COMPRESSOR

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501646B1 (en) * 1970-07-11 1975-01-20
DE2135286A1 (en) * 1971-07-15 1973-01-25 Wilhelm Prof Dr Ing Dettmering RUNNER AND GUIDE WHEEL GRILLE FOR TURBO MACHINERY
FR2166494A5 (en) * 1971-12-27 1973-08-17 Onera (Off Nat Aerospatiale)
JPS5254807A (en) * 1975-10-31 1977-05-04 Hitachi Ltd Axial-flow fluid machine
DE2845094A1 (en) * 1978-10-17 1980-05-08 Freudenberg Carl Fa GRIP DEVICE
FR2473290A1 (en) * 1980-01-14 1981-07-17 Treboul Douarnenez Ctre Cure M Three part recliner bed or table - is made of wood or plastics and is supported by two cross-wise bars
JPS5752603A (en) * 1980-09-17 1982-03-29 Toshiba Corp Leakage preventing device in turbine
SU1015082A1 (en) * 1981-07-13 1983-04-30 Московский Ордена Ленина И Ордена Октябрьской Революции Энергетический Институт Multistage steam turbine
SU1159970A1 (en) * 1982-12-31 1985-06-07 Всесоюзный Дважды Ордена Трудового Красного Знамени Теплотехнический Научно-Исследовательский Институт Им.Ф.Э.Дзержинского Stage of turbomachine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146352A (en) * 1975-10-31 1979-03-27 Hitachi, Ltd. Diaphragms for axial flow fluid machines
WO1980000728A1 (en) * 1978-10-05 1980-04-17 Alsthom Atlantique Blade grid for a turbine and turbine comprising such a blade grid
FR2438157A1 (en) * 1978-10-05 1980-04-30 Alsthom Atlantique BLADE GRILLE FOR TURBINE OR COMPRESSOR

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1, no. 118 (M-77)(3758) 8 Octobre 1977 & JP-A-52 054 807 ( HITACHI SEISAKUSHO ) 5 Avril 1977 *

Also Published As

Publication number Publication date
FR2666846A1 (en) 1992-03-20
MX9101073A (en) 1994-06-30
DE69105418T2 (en) 1995-04-20
CN1060891A (en) 1992-05-06
JPH04279701A (en) 1992-10-05
CS281991A3 (en) 1992-03-18
US5232338A (en) 1993-08-03
EP0475329A2 (en) 1992-03-18
ZA917326B (en) 1992-05-27
DE69105418D1 (en) 1995-01-12
EP0475329B1 (en) 1994-11-30
FR2666846B1 (en) 1992-10-16
ATE114780T1 (en) 1994-12-15

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