WO2005116404A1 - Schaufelblatt mit übergangszone - Google Patents
Schaufelblatt mit übergangszone Download PDFInfo
- Publication number
- WO2005116404A1 WO2005116404A1 PCT/DE2005/000788 DE2005000788W WO2005116404A1 WO 2005116404 A1 WO2005116404 A1 WO 2005116404A1 DE 2005000788 W DE2005000788 W DE 2005000788W WO 2005116404 A1 WO2005116404 A1 WO 2005116404A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- airfoil
- thickening
- cut
- end region
- radius
- Prior art date
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
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- the invention relates to an airfoil of a guide blade or moving blade of a turbomachine according to the preamble of claim 1. Furthermore, the invention relates to a turbomachine according to the preamble of claim 13.
- EP 0 798 447 B1 discloses an airfoil for turbomachines, in particular for gas turbines, which extend in a radial direction in an annular duct or flow duct, the aerofoils having a thickening of the aerofoil profile on at least one delimiting side wall of the annular duct. According to EP 0 798 447 B1, this thickening is formed by an increased leading edge nose radius and / or an increased leading edge wedge angle and / or an increased trailing edge wedge angle and / or a greater absolute profile thickness of profile cuts adjoining the limiting side wall compared to a reference profile cut.
- the present invention is based on the problem of creating a novel airfoil of a guide blade or rotor blade of a turbomachine.
- the thickening is cut in the area of a front edge of the airfoil to form a mirror surface or base surface.
- the thickening in the area of the front edge is cut with a straight or flat cut in such a way that the cutting direction of the cut runs in the circumferential direction or transverse to the axial direction of the turbomachine.
- the thickening in the area of the front edge is cut with a circular segment or cylinder segment shaped cut such that a tangent applied to the foremost part of the cut runs in the circumferential direction or transverse to the axial direction of the turbomachine.
- the or each thickening is preferably formed by a large radius of curvature at the radially inner end region and / or radially outer end region of the airfoil, the ratio of the radius of curvature to a chord length of the airfoil being between 2% and 10%.
- turbomachine according to the invention is defined in independent claim 13.
- FIG. 1 shows an airfoil according to the prior art in a highly schematic, perspective side view
- FIG. 2 shows the airfoil of FIG. 1 in viewing direction II of FIG. 1;
- FIG. 3 shows an airfoil according to the prior art in a representation analogous to FIG. 2;
- FIG. 4 shows a section through the airfoil of FIG. 3 in the cutting direction III-III;
- FIG. 5 shows an airfoil according to the invention in a highly schematic, perspective side view
- FIG. 6 shows the airfoil of FIG. 5 in viewing direction VI of FIG. 5;
- FIG. 7 shows a second airfoil according to the invention in a representation analogous to FIG. 6;
- FIGS. 8 shows a third airfoil according to the invention in a representation analogous to FIGS. 6 and 7.
- Fig. 1 shows a known from the prior art blade 10 of a blade in a highly schematic representation
- the blade 10 of the blade according to FIG. 1 has a flow-mechanically advantageous thickening 11 of the blade profile at a radially inner, hub-side end region.
- the thickening 11 extends according to FIG 3 are the chord length 1 of the airfoil, which is defined by the distance between the front edge 12 and the rear edge 13, and the maximum profile thickness d and others x of the airfoil.
- the thickening 11 at the hub-side end of the airfoil 10 of the rotor blade which is not shown further, is achieved in that a hub-side profile cut of the airfoil 10 has a larger absolute profile thickness d than a reference profile cut, the contour of the thickening 11 is defined according to FIG. 4 by a radius of curvature r. With such a thickening 11, secondary flow losses can be minimized.
- the thickening 11 shown in FIGS. 1 to 4 merely represents a possible variant of thickening that minimizes secondary flow. Further thickening that minimizes secondary flow can result from an enlargement of the profile parameters leading edge nose radius and / or leading edge wedge angle and / or trailing edge wedge angle and / or absolute profile thickness. With regard to the details of such thickenings, reference is made to EP 0 798 447 B1, the disclosure content of which is explicitly referred to here by reference.
- the thickening 11 in the region of the front edge 12 of the airfoil 10 is cut with a straight or flat cut such that the cutting direction of the cut runs in the circumferential direction (arrow 15) of the turbomachine .
- the flat mirror surface 14 that is set in this case runs parallel to the circumferential direction 15.
- the cutting direction for providing the flat mirror surface 14 is transverse or perpendicular to the axial direction (Arrow 16) of the turbomachine.
- the thickening 11 is in the embodiment of FIGS. 5 and 6, as described in connection with FIGS. 1 to 4, continuously formed around the airfoil and characterized by a large radius of curvature r at the radially inner end region or radially outer end region of the airfoil, wherein
- the radius of curvature r is dimensioned such that the ratio of the radius of curvature r to the chord length 1 of the airfoil 10 is between 2% and 10%, preferably between 4% and 8%, particularly preferably between 5% and 7%.
- the ratio of rounding radius r to chord length is preferably 1 6%.
- FIG. 7 shows a further exemplary embodiment of an airfoil 10 according to the invention, wherein in the exemplary embodiment of FIG. 7 the airfoil 10 also has a thickening 11 on the radially inner, end region on the hub side and / or on the radially outer, end region on the housing side, the thickening 11 in turn Area of the front edge 12 is cut to form a mirror surface 17.
- the thickening 11 in the region of the front edge 12 is not in the exemplary embodiment in FIG. 7 cut through a flat cut, but rather through a circular segment or cylinder segment shaped cut.
- the thickening 11 is cut through the circular segment or cylindrical segment-shaped cut in such a way that a tangent 18 applied to the foremost part of the cut or the mirror surface 17 that is formed parallel to the circumferential direction (arrow 15) and transversely or perpendicularly to the axial direction (arrow 16 ) of the turbomachine.
- FIG. 8 shows an airfoil 10 designed according to the invention with a variable radius of curvature r, which decreases starting from the front edge 12 in the direction of the rear edge 13 of the airfoil.
- the airfoil 10 is in turn cut off at the front edge 12 to form a mirror surface or base surface, a cut in the form of a segment of a circle or a cylinder segment being formed in the exemplary embodiment in FIG. 8 as well as in the exemplary embodiment in FIG. 7 Formation of the mirror surface 17 is executed.
- a variable radius of curvature r in the region of the thickening 11, secondary flow loss can be minimized again.
- the airfoils according to the invention are preferably used in guide vanes or moving blades of a turbine or a compressor of a gas turbine, in particular of a gas turbine aircraft engine.
- the blades of rotating rotor blades have thickenings designed according to the invention only in the region of the hub-side end, fixed guide blades can have such a thickening both at the radially inner end on the hub side and at the radially outer end on the housing side.
- the thickenings in the area of the front edge are cut to form a mirror surface or base surface.
- a large radius of curvature is used in the sense of the invention.
- secondary flow losses can be minimized in this way, and on the other hand, the axial overall depth or overall length of the turbomachine equipped with such blades or blades is not increased.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Control Of Turbines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/597,950 US20070177979A1 (en) | 2004-05-29 | 2005-04-29 | Vane comprising a transition zone |
EP05749220A EP1759090A1 (de) | 2004-05-29 | 2005-04-29 | Schaufelblatt mit übergangszone |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004026386A DE102004026386A1 (de) | 2004-05-29 | 2004-05-29 | Schaufelblatt einer Strömungsmaschine sowie Strömungsmaschine |
DE102004026386.8 | 2004-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005116404A1 true WO2005116404A1 (de) | 2005-12-08 |
Family
ID=34969634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/000788 WO2005116404A1 (de) | 2004-05-29 | 2005-04-29 | Schaufelblatt mit übergangszone |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070177979A1 (de) |
EP (1) | EP1759090A1 (de) |
DE (1) | DE102004026386A1 (de) |
RU (1) | RU2383748C2 (de) |
UA (1) | UA91191C2 (de) |
WO (1) | WO2005116404A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1840328A1 (de) * | 2006-03-30 | 2007-10-03 | Snecma | Gleichrichtersektor, Verdichtungsstufe, Verdichter und Strömungsmaschine, die eine solcher Sektor umfasst |
EP1840329A1 (de) * | 2006-03-30 | 2007-10-03 | Snecma | Optimierte Leitschaufel eines Gleichrichters, Gleichrichtersektor, Verdichtungsstufe, Verdichter und Strömungsmaschine, die eine solche Leitschaufel umfasst |
EP2811116A1 (de) * | 2013-06-05 | 2014-12-10 | Alstom Technology Ltd | Schaufelblatt für Gasturbine, Lauf- und Leitschaufel |
EP3051067A1 (de) * | 2015-01-15 | 2016-08-03 | United Technologies Corporation | Gasturbinenmotorschaufel mit verkürztem einlass |
US10436044B2 (en) | 2015-12-04 | 2019-10-08 | MTU Aero Engines AG | Guide vane segment for a turbomachine |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008017624A1 (de) * | 2008-04-04 | 2009-10-08 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren zur aerodynamischen Ausformung der Vorderkante von Bliskschaufeln |
DE102009036406A1 (de) | 2009-08-06 | 2011-02-10 | Mtu Aero Engines Gmbh | Schaufelblatt |
DE102010004854A1 (de) * | 2010-01-16 | 2011-07-21 | MTU Aero Engines GmbH, 80995 | Laufschaufel für eine Strömungsmaschine und Strömungsmaschine |
US8944774B2 (en) * | 2012-01-03 | 2015-02-03 | General Electric Company | Gas turbine nozzle with a flow fence |
DE102013213416B4 (de) * | 2013-07-09 | 2017-11-09 | MTU Aero Engines AG | Schaufel für eine Gasturbomaschine |
JP5916826B2 (ja) * | 2014-09-24 | 2016-05-11 | 三菱日立パワーシステムズ株式会社 | 回転機械の翼体、及びガスタービン |
US9995166B2 (en) * | 2014-11-21 | 2018-06-12 | General Electric Company | Turbomachine including a vane and method of assembling such turbomachine |
US11098591B1 (en) | 2019-02-04 | 2021-08-24 | Raytheon Technologies Corporation | Turbine blade with contoured fillet |
DE102021123281A1 (de) | 2021-09-08 | 2023-03-09 | MTU Aero Engines AG | Schaufelblatt für einen Verdichter einer Strömungsmaschine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB801468A (en) * | 1955-03-31 | 1958-09-17 | Escher Wyss Ag | Improvements in or relating to blades for use in axial-flow rotary bladed machines such as gas turbines |
US4704066A (en) * | 1985-04-19 | 1987-11-03 | Man Gutehoffnungshutte Gmbh | Turbine or compressor guide blade and method of manufacturing same |
EP1182328A2 (de) * | 2000-08-21 | 2002-02-27 | General Electric Company | Methode zur Verringerung der Umfangsspanung in Rotoren |
US20040062636A1 (en) * | 2002-09-27 | 2004-04-01 | Stefan Mazzola | Crack-resistant vane segment member |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6511294B1 (en) * | 1999-09-23 | 2003-01-28 | General Electric Company | Reduced-stress compressor blisk flowpath |
-
2004
- 2004-05-29 DE DE102004026386A patent/DE102004026386A1/de not_active Withdrawn
-
2005
- 2005-04-29 UA UAA200613524A patent/UA91191C2/ru unknown
- 2005-04-29 US US11/597,950 patent/US20070177979A1/en not_active Abandoned
- 2005-04-29 EP EP05749220A patent/EP1759090A1/de not_active Withdrawn
- 2005-04-29 WO PCT/DE2005/000788 patent/WO2005116404A1/de active Application Filing
- 2005-04-29 RU RU2006145067/06A patent/RU2383748C2/ru not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB801468A (en) * | 1955-03-31 | 1958-09-17 | Escher Wyss Ag | Improvements in or relating to blades for use in axial-flow rotary bladed machines such as gas turbines |
US4704066A (en) * | 1985-04-19 | 1987-11-03 | Man Gutehoffnungshutte Gmbh | Turbine or compressor guide blade and method of manufacturing same |
EP1182328A2 (de) * | 2000-08-21 | 2002-02-27 | General Electric Company | Methode zur Verringerung der Umfangsspanung in Rotoren |
US20040062636A1 (en) * | 2002-09-27 | 2004-04-01 | Stefan Mazzola | Crack-resistant vane segment member |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1840328A1 (de) * | 2006-03-30 | 2007-10-03 | Snecma | Gleichrichtersektor, Verdichtungsstufe, Verdichter und Strömungsmaschine, die eine solcher Sektor umfasst |
EP1840329A1 (de) * | 2006-03-30 | 2007-10-03 | Snecma | Optimierte Leitschaufel eines Gleichrichters, Gleichrichtersektor, Verdichtungsstufe, Verdichter und Strömungsmaschine, die eine solche Leitschaufel umfasst |
FR2899270A1 (fr) * | 2006-03-30 | 2007-10-05 | Snecma Sa | Aube de redresseur a amenagement de forme localise, secteur de redresseurs, etage de compression, compresseur et turbomachine comportant une telle aube |
FR2899269A1 (fr) * | 2006-03-30 | 2007-10-05 | Snecma Sa | Aube de redresseur optimisee, secteur de redresseurs, etage de compression, compresseur et turbomachine comportant une telle aube |
US7857584B2 (en) | 2006-03-30 | 2010-12-28 | Snecma | Stator vane with localized reworking of shape, stator section, compression stage, compressor and turbomachine comprising such a vane |
EP2811116A1 (de) * | 2013-06-05 | 2014-12-10 | Alstom Technology Ltd | Schaufelblatt für Gasturbine, Lauf- und Leitschaufel |
EP2811115A1 (de) * | 2013-06-05 | 2014-12-10 | Alstom Technology Ltd | Schaufelprofil für Gasturbine, Rotorschaufel und Statorschaufel |
KR20140143091A (ko) * | 2013-06-05 | 2014-12-15 | 알스톰 테크놀러지 리미티드 | 가스 터빈용 에어포일, 블레이드 및 베인 |
KR101654530B1 (ko) | 2013-06-05 | 2016-09-06 | 제네럴 일렉트릭 테크놀러지 게엠베하 | 가스 터빈용 에어포일, 블레이드 및 베인 |
US9581027B2 (en) | 2013-06-05 | 2017-02-28 | General Electric Technology Gmbh | Airfoil for gas turbine, blade and vane |
EP3051067A1 (de) * | 2015-01-15 | 2016-08-03 | United Technologies Corporation | Gasturbinenmotorschaufel mit verkürztem einlass |
US10436044B2 (en) | 2015-12-04 | 2019-10-08 | MTU Aero Engines AG | Guide vane segment for a turbomachine |
Also Published As
Publication number | Publication date |
---|---|
RU2383748C2 (ru) | 2010-03-10 |
EP1759090A1 (de) | 2007-03-07 |
DE102004026386A1 (de) | 2005-12-22 |
US20070177979A1 (en) | 2007-08-02 |
RU2006145067A (ru) | 2008-07-10 |
UA91191C2 (ru) | 2010-07-12 |
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