EP0798447A3 - Turbomachine blade - Google Patents

Turbomachine blade Download PDF

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Publication number
EP0798447A3
EP0798447A3 EP97104465A EP97104465A EP0798447A3 EP 0798447 A3 EP0798447 A3 EP 0798447A3 EP 97104465 A EP97104465 A EP 97104465A EP 97104465 A EP97104465 A EP 97104465A EP 0798447 A3 EP0798447 A3 EP 0798447A3
Authority
EP
European Patent Office
Prior art keywords
airfoil
profile
blade
angle
diked
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
EP97104465A
Other languages
German (de)
French (fr)
Other versions
EP0798447A2 (en
EP0798447B1 (en
Inventor
Reinhard Dr. Niehuis
Norbert Hübner
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.)
MTU Aero Engines AG
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
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
Priority claimed from DE1996112396 external-priority patent/DE19612396C2/en
Priority claimed from DE1996112394 external-priority patent/DE19612394C2/en
Application filed by MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of EP0798447A2 publication Critical patent/EP0798447A2/en
Publication of EP0798447A3 publication Critical patent/EP0798447A3/en
Application granted granted Critical
Publication of EP0798447B1 publication Critical patent/EP0798447B1/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

Abstract

Es wird ein Schaufelblatt 6 für Strömungsmaschinen angegeben, deren Profilschnitte P zur Anpassung an die radial veränderlichen Strömungswinkel und -zustände unterschiedlich ausgebildet sind, angegeben. Aufgabe ist es, durch eine entsprechende Schaufelgestaltung die durch die Sekundärströmung bedingten Schaufelverluste zu reduzieren. Hierzu wird vorgeschlagen, die randnahen Profilschnitte PR durch Vergrößerung des Vorderkantenradiuses RN, des Keilwinkels γN und/oder der absoluten Profildicke d mit einer strömungsmechanisch gestalteten Aufdickung 11 zu versehen. Durch die Aufdikung 11 des Schaufelblattes 6 im saug- und druckseitigen Bereich wird die Intensität und räumliche Lage des Sekundärwirbels geändert, was schließlich zur Verbesserung des Stufenwirkungsgrades führt. Vorteilhafte Anwendungsfälle sind Stator- und Rotorbeschaufelungen von Verdichtem, Turbinen, Gebläsen und Pumpen.

Figure 00000001
An airfoil 6 for turbomachines is specified, the profile sections P of which are designed differently to adapt to the radially variable flow angle and conditions. The task is to reduce the blade losses caused by the secondary flow by appropriate blade design. For this purpose, it is proposed to provide the profile cuts P R near the edge by increasing the leading edge radius R N , the wedge angle γ N and / or the absolute profile thickness d with a fluid mechanically designed thickening 11. The diked portion 11 of the airfoil 6 in the suction and pressure side area changes the intensity and spatial position of the secondary vortex, which ultimately leads to an improvement in the step efficiency. Advantageous applications are stator and rotor blading of compressors, turbines, blowers and pumps.
Figure 00000001
EP97104465A 1996-03-28 1997-03-15 Turbomachine blade Expired - Lifetime EP0798447B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1996112396 DE19612396C2 (en) 1996-03-28 1996-03-28 Blade with differently designed profile cross sections
DE19612396 1996-03-28
DE19612394 1996-03-28
DE1996112394 DE19612394C2 (en) 1996-03-28 1996-03-28 Airfoil blade

Publications (3)

Publication Number Publication Date
EP0798447A2 EP0798447A2 (en) 1997-10-01
EP0798447A3 true EP0798447A3 (en) 1998-08-05
EP0798447B1 EP0798447B1 (en) 2001-09-05

Family

ID=26024235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97104465A Expired - Lifetime EP0798447B1 (en) 1996-03-28 1997-03-15 Turbomachine blade

Country Status (3)

Country Link
EP (1) EP0798447B1 (en)
DE (1) DE59704501D1 (en)
ES (1) ES2163678T3 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6969232B2 (en) * 2002-10-23 2005-11-29 United Technologies Corporation Flow directing device
SG126736A1 (en) * 2003-10-29 2006-11-29 United Technologies Corp Flow directing device
EP1612372B1 (en) * 2004-07-01 2014-10-08 Alstom Technology Ltd Turbine blade with a cut-back at the root of the blade
DE102008060847B4 (en) 2008-12-06 2020-03-19 MTU Aero Engines AG Fluid machine
US8794912B2 (en) * 2009-05-07 2014-08-05 Volvo Aero Corporation Strut and a gas turbine structure comprising the strut
DE102009036406A1 (en) 2009-08-06 2011-02-10 Mtu Aero Engines Gmbh airfoil
DE102010009615B4 (en) 2010-02-27 2016-11-17 MTU Aero Engines AG Airfoil with threaded profile cuts
EP2559852A1 (en) 2011-08-19 2013-02-20 Siemens Aktiengesellschaft Exhaust diffuser and method for manufacturing an exhaust diffuser
EP2559851A1 (en) 2011-08-19 2013-02-20 Siemens Aktiengesellschaft Exhaust diffuser and method for manufacturing an exhaust diffuser
EP2559850A1 (en) 2011-08-19 2013-02-20 Siemens Aktiengesellschaft Exhaust diffuser and method for manufacturing an exhaust diffuser
ES2535096T3 (en) * 2012-12-19 2015-05-05 MTU Aero Engines AG Blade of blade and turbomachine
CN106884681B (en) * 2017-02-27 2018-04-24 江苏大学 A kind of large high-temperature high pressure turbine pump blade and manufacture method
CN106884682B (en) * 2017-02-27 2018-08-10 江苏大学 A kind of large high-temperature high pressure turbine pump blade design method
DE102018211673A1 (en) 2018-07-12 2020-01-16 Continental Automotive Gmbh Guide vane and turbine assembly provided with such
US11421702B2 (en) 2019-08-21 2022-08-23 Pratt & Whitney Canada Corp. Impeller with chordwise vane thickness variation
CN112733252B (en) * 2020-12-24 2024-03-29 中国航空工业集团公司金城南京机电液压工程研究中心 Design method of axial flow turbine blade formed by framework
CN114687806A (en) * 2020-12-31 2022-07-01 中国航发商用航空发动机有限责任公司 Impeller mechanical blade, molding method thereof and impeller machine

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046246B (en) * 1955-05-18 1958-12-11 Daimler Benz Ag Axial compressor
GB840543A (en) * 1956-01-16 1960-07-06 Vickers Electrical Co Ltd Improvements in turbine blading
DE1108374B (en) * 1960-02-23 1961-06-08 M A N Turbomotoren G M B H Device to avoid secondary currents in blade channels of flow machines
DE1428110A1 (en) * 1962-10-29 1969-02-13 Gen Electric Compressor blading
DE2135287A1 (en) * 1971-07-15 1973-01-25 Wilhelm Prof Dr Ing Dettmering RUNNER AND GUIDE WHEEL GRILLE FOR TURBO MACHINERY
DE2841616A1 (en) * 1977-09-26 1979-03-29 Hitachi Ltd SHOVEL GRATE FOR AN AXIAL FLOW MACHINE
JPS55142909A (en) * 1979-04-25 1980-11-07 Hitachi Ltd Turbine blade
US4696621A (en) * 1985-06-28 1987-09-29 Rolls-Royce Aerofoil section members for gas turbine engines
US4714407A (en) * 1984-09-07 1987-12-22 Rolls-Royce Plc Aerofoil section members for turbine engines
US4778338A (en) * 1981-01-05 1988-10-18 Alsthom-Atlantique Turbine stage
WO1995011388A1 (en) * 1993-10-20 1995-04-27 Josef Moser Surface of a body immersed in a fluid flow
EP0704602A2 (en) * 1994-08-30 1996-04-03 Gec Alsthom Limited Turbine blade

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046246B (en) * 1955-05-18 1958-12-11 Daimler Benz Ag Axial compressor
GB840543A (en) * 1956-01-16 1960-07-06 Vickers Electrical Co Ltd Improvements in turbine blading
DE1108374B (en) * 1960-02-23 1961-06-08 M A N Turbomotoren G M B H Device to avoid secondary currents in blade channels of flow machines
DE1428110A1 (en) * 1962-10-29 1969-02-13 Gen Electric Compressor blading
DE2135287A1 (en) * 1971-07-15 1973-01-25 Wilhelm Prof Dr Ing Dettmering RUNNER AND GUIDE WHEEL GRILLE FOR TURBO MACHINERY
DE2841616A1 (en) * 1977-09-26 1979-03-29 Hitachi Ltd SHOVEL GRATE FOR AN AXIAL FLOW MACHINE
JPS55142909A (en) * 1979-04-25 1980-11-07 Hitachi Ltd Turbine blade
US4778338A (en) * 1981-01-05 1988-10-18 Alsthom-Atlantique Turbine stage
US4714407A (en) * 1984-09-07 1987-12-22 Rolls-Royce Plc Aerofoil section members for turbine engines
US4696621A (en) * 1985-06-28 1987-09-29 Rolls-Royce Aerofoil section members for gas turbine engines
WO1995011388A1 (en) * 1993-10-20 1995-04-27 Josef Moser Surface of a body immersed in a fluid flow
EP0704602A2 (en) * 1994-08-30 1996-04-03 Gec Alsthom Limited Turbine blade

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 010 (M - 051) 22 January 1981 (1981-01-22) *

Also Published As

Publication number Publication date
ES2163678T3 (en) 2002-02-01
EP0798447A2 (en) 1997-10-01
DE59704501D1 (en) 2001-10-11
EP0798447B1 (en) 2001-09-05

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