EP1798375B1 - Profil d'aube pour aubes statoriques variables - Google Patents
Profil d'aube pour aubes statoriques variables Download PDFInfo
- Publication number
- EP1798375B1 EP1798375B1 EP06024318A EP06024318A EP1798375B1 EP 1798375 B1 EP1798375 B1 EP 1798375B1 EP 06024318 A EP06024318 A EP 06024318A EP 06024318 A EP06024318 A EP 06024318A EP 1798375 B1 EP1798375 B1 EP 1798375B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- zone
- stator
- profile
- line
- blade
- 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.)
- Not-in-force
Links
- 239000012530 fluid Substances 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 claims 2
- 230000002349 favourable effect Effects 0.000 description 3
- 230000007717 exclusion Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001914 calming effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially 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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
- F01D17/165—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
- F04D29/544—Blade shapes
-
- 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
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/301—Cross-sectional characteristics
-
- 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
- F05D2250/00—Geometry
-
- 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
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/14—Two-dimensional elliptical
-
- 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
- F05D2250/00—Geometry
- F05D2250/70—Shape
- F05D2250/74—Shape given by a set or table of xyz-coordinates
-
- 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
- Y10S416/00—Fluid reaction surfaces, i.e. impellers
- Y10S416/02—Formulas of curves
Definitions
- the present invention relates to variable stator blades of fluid flow machines such as fans, compressors, pumps, and fans in the axial, semi-axial, or even radial form.
- the working medium can be gaseous or liquid.
- the invention relates to at least one adjustable stator blade, possibly also an adjustable Vorleitrad, a fluid flow machine.
- the blading in question is within a housing, which limits the flow of at least one rotor and a stator with a fluid to the outside.
- a rotor comprises a plurality of rotor blades attached to a rotating shaft and supplies energy to the working fluid
- a stator consists of a plurality of stator blades usually mounted in the housing.
- the aerodynamic load capacity and the efficiency of fluid flow machines is limited in particular by the growth and separation of boundary layers in the region of the radial gap between the blading and the housing or hub, which is structurally necessary at the annular channel edge.
- Rotary adjustable stators in particular, which are characterized by the necessary free cuts in front of and behind the rotary spindle, have a pronounced radial gap and cause considerable flow losses.
- turntables as large as possible are usually provided at the inner and outer ends of the adjusting stators in order to keep the extent of the cutouts in the flow direction small.
- the turntables are arranged so that they are located in the critically classified profile leading edge zone of the blade edge cuts.
- the Fig. 1 Fig. 2 shows a schematic representation of two prior art blade configurations in the meridian plane given by the radial direction r and the axial direction x.
- the presentation is limited to a mounted in hub as housing variable stator, a storage solely in housing or hub with a full radial gap at the other end of the blade but in some cases also occurs.
- the blade On the left side of the picture, a conventional variable stator without variation of the skeleton line type is shown.
- the blade consists of only one block (ZO) in which the type of skeleton line is given according to uniform rules.
- ZO the type of skeleton line is given according to uniform rules.
- This category includes the so-called CDA (controlled diffusion aerofoils) US4431376 , From an aerodynamic point of view, the CDA aims for a moderate profile frontload.
- the present invention relates to stators, which are rotatably mounted on at least one blade end and can be adjusted via a spindle about a fixed axis of rotation. As in all representations shown here, the inflow of the relevant row of blades takes place, as indicated by the thick arrow, from left to right.
- the present invention has for its object to provide an adjustable stator blade of the type mentioned, which achieves a very effective influencing the edge flow through targeted and problematic, block-wise definition of the profile skeleton lines along the blade height while avoiding the prior art.
- the Fig.2 gives a precise definition of meridian flow lines and streamline profile sections.
- the middle meridional flow line is formed by the geometric center of the ring channel. If one establishes a normal at each location of the middle streamline, one obtains the course of the ring channel width W along the flow path and, on the other hand, a number of normals with whose help further meridional streamlines result with the same relative subdivision in the direction of the channel height.
- the intersection of a meridional streamline with a blade results in a streamline profile intersection.
- the 3a shows the invention adjustable stator blade with storage in the housing and hub "SGN" in the determined by the axial coordinate x and the radial coordinate r meridian.
- the blade edge zones Z1 and Z2, the transition zones T1 and T2 and the blade center zone Z0 are particularly marked and in each case by meridional flow lines as defined in FIG Fig.2 limited.
- Each of the five bucket zones is assigned a subset WZ1, WT1, WZ0, WT2, WZ2, which is measured in the direction of the channel width W.
- the Fig. 4 shows the definition of the height aspect ratio, which is decisive for the determination of the respective zone widths.
- the middle streamline first gives the position for the determination of the total blade height H when halving the distance between the leading and trailing edges (point G).
- the height H is determined along a straight line at point G perpendicular to the middle streamline.
- five flow lines are specified at 10%, 30%, 50%, 70% and 90% of the channel width W (SL10, SL30, SL50, SL70, SL90), along which the respective chord length L is to be determined.
- the definition of L is shown for any meridian flow area (um level) in the upper left half of the picture.
- the chord length resulting at xy% of the channel width is here and in the formulas of Figure 4 denoted by LSLxy.
- the Figure 5 shows the definition of the rotational axis position, which is co-determining for the present invention according to profile skeleton line type PR.
- the picture shows a schematic of the streamline section through the adjustable stator blade at 5% and 95% channel width, respectively. Shown is the puncture point of the axis of rotation in the plane of the streamline section, point D. This point does not necessarily have to lie within the profile, as shown here.
- the entire chord length is L. Determined by the perpendicular Lot of the point D on the chord, one obtains the measured distance d of the axis of rotation in the same direction from the front edge.
- the respective skeleton line type is determined in relative representation with the help of the related inclination angle ⁇ * and the related run length s *, see 6a ,
- the image shows a streamline profile cut of the blade on a meridian flow surface (um-plane).
- the inclination angle ⁇ P and the run length sP covered up to this point are determined in all points of the skeleton line.
- the inclination angles at leading and trailing edges ⁇ 1 and ⁇ 2 as well as the total running length of the skeleton line S are used. The following applies: ⁇ * ⁇ ⁇ 1 - ⁇ P / ⁇ ⁇ 1 - ⁇ ⁇ 2 and s * sP / S ,
- the Figure 6b shows in the known relative representation the definition of the skeleton line type "PM". Skeleton lines according to the invention are located above a boundary line. Skeleton lines in the exclusion area below and on the boundary line are not according to the invention.
- a skeleton line distribution which can be provided according to the invention for the block in the center of the blade is shown.
- Skeleton line courses according to the invention are located below the continuous upper limit line and run over the lower limit line given in a specific interval. Skeleton lines in the exclusion area above and on the upper boundary line are not according to the invention. Skeleton line courses below or on the lower boundary line are also not according to the invention.
- an edge flow control is achieved, which can increase the efficiency of each stage by about 1% with the same stability.
- a reduction in the number of blades of up to 20% is possible.
- the inventive concept is applicable to different types of turbomachines and, depending on the degree of utilization of the concept, leads to reductions in costs and weight for the turbomachine of 2% to 10%.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Supercharger (AREA)
Claims (2)
- Stator réglable d'une turbomachine, avec une ligne moyenne de profil qui s'étend le long d'une ligne d'écoulement méridienne, sachant que le stator peut pivoter autour d'un axe de rotation, et est subdivisé dans le sens radial en au moins trois zones (Z0, Z1, Z2), que les zones (Z1, Z2) sont des zones marginales d'aube et la zone (Z0) est une zone centrale d'aube, et que dans chacune des trois zones, les lignes moyennes de profil de chaque zone (Z0, Z1, Z2) s'étendant des bords intérieurs aux bords extérieurs dans le sens radial sont formées de manière à satisfaire les équations suivantes :
dans lesquelles:- P est un point quelconque de la ligne moyenne de profil,- α1 est l'angle d'inclinaison sur le bord d'attaque du stator,- α2 est l'angle d'inclinaison sur le bord de fuite du stator,- α* est l'angle adimensionnel, spécifique, de la cambrure totale,- s* est la longueur adimensionnelle, spécifique,- αP est l'angle de la tangente à un point quelconque P de la ligne moyenne de profil par rapport à la ligne d'écoulement méridienne centrale,- SP est la longueur de la ligne moyenne de profil à un point quelconque P, et- S est la longueur totale de la ligne moyenne de profil,caractérisé en ce que dans une représentation par un diagramme, dans lequel l'angle adimensionnel spécifique α* est représenté en fonction de la longueur adimensionnelle spécifique s*, la ligne moyenne de profil est formée dans une zone marginale d'aube (Z1, Z2) du stator à son extrémité fixe (Z1, Z2), le tracé de la ligne moyenne de profil étant représenté sous la forme α* comme fonction de s*, en dessous d'une ligne limite représentée dans le diagramme, laquelle ligne limite est obtenue conformément à l'équation suivante :
dans laquelle:
et
sachant qu'un axe de rotation relatif du stator est situé sur une perpendiculaire à la corde de profil dans le plan de la section respective de la ligne d'écoulement, et qu'une distance d entre l'axe de rotation D et le bord d'attaque du stator est définie par la perpendiculaire à la corde de profil, sachant que la position relative de l'axe de rotation d* est définie par d* = d/L, avec L = longueur totale de la corde du profil de l'aube à extrémité fixe et d = distance entre l'axe de rotation D et le bord d'attaque du stator dans le sens de la corde de profil, sachant qu'un rapport de la hauteur à la largeur (HSV) se détermine selon l'équation suivante:
dans laquelle:- H est la hauteur le long d'une ligne droite située dans le plan méridien défini par le sens radial r et le sens axial x et qui, à un point G, est perpendiculaire à une ligne d'écoulement médiane formant le centre géométrique de la voie d'écoulement dans laquelle est placé le stator,- L est la longueur de la corde du profil, et- les différentes longueurs L des cordes de profil pour cinq lignes d'écoulement correspondent à 10 %, 30 %, 50 %, 70 % et 90 % d'une largeur W de canal annulaire d'une voie d'écoulement dans laquelle est placé le stator,sachant que des largeurs de zone sont déterminées en fonction du rapport de la hauteur à la largeur (HSV) sous forme relative, rapportée à une largeur de canal annulaire de la voie d'écoulement (W), conformément à la consigne de calcul suivante :
dans laquelle:- W est la largeur du canal annulaire de la voie d'écoulement,- WZ1 est la largeur partielle de canal dans une zone Z1,- WZ2 est la largeur partielle de canal dans une zone Z2,- WZ0 est la largeur partielle de canal dans une zone centrale Z0,- WT1 est la largeur partielle de canal dans une zone transitoire entre la zone Z1 et la zone Z0, et- WT2 est la largeur partielle de canal dans une zone transitoire entre la zone Z0 et Z2. - Stator selon la revendication n° 1, caractérisé en ce que dans une représentation du tracé de la ligne moyenne sous la forme α* comme fonction de s*, la ligne moyenne de profil dans une zone du stator située dans la zone centrale d'aube (Z0) est formée au-dessus d'une ligne limite qui est obtenue conformément à l'équation suivante :
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005060699A DE102005060699A1 (de) | 2005-12-19 | 2005-12-19 | Strömungsarbeitsmaschine mit Verstellstator |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1798375A2 EP1798375A2 (fr) | 2007-06-20 |
EP1798375A3 EP1798375A3 (fr) | 2008-10-29 |
EP1798375B1 true EP1798375B1 (fr) | 2011-03-02 |
Family
ID=37905790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06024318A Not-in-force EP1798375B1 (fr) | 2005-12-19 | 2006-11-23 | Profil d'aube pour aubes statoriques variables |
Country Status (3)
Country | Link |
---|---|
US (1) | US7416382B2 (fr) |
EP (1) | EP1798375B1 (fr) |
DE (2) | DE102005060699A1 (fr) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005040574A1 (de) * | 2005-08-26 | 2007-03-15 | Rolls-Royce Deutschland Ltd & Co Kg | Spaltkontrollvorrichtung für eine Gasturbine |
DE102006055869A1 (de) | 2006-11-23 | 2008-05-29 | Rolls-Royce Deutschland Ltd & Co Kg | Schaufelblattdesign für die Lauf- und Leitschaufeln einer Turbomaschine |
WO2012090269A1 (fr) * | 2010-12-27 | 2012-07-05 | 三菱重工業株式会社 | Corps d'aube et machine rotative |
US8834104B2 (en) * | 2010-06-25 | 2014-09-16 | Honeywell International Inc. | Vanes for directing exhaust to a turbine wheel |
DE102010027588A1 (de) * | 2010-07-19 | 2012-01-19 | Rolls-Royce Deutschland Ltd & Co Kg | Fan-Nachleitradschaufel eines Turbofantriebwerks |
JP5608062B2 (ja) * | 2010-12-10 | 2014-10-15 | 株式会社日立製作所 | 遠心型ターボ機械 |
JP6468414B2 (ja) * | 2014-08-12 | 2019-02-13 | 株式会社Ihi | 圧縮機静翼、軸流圧縮機、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 |
US9845684B2 (en) * | 2014-11-25 | 2017-12-19 | Pratt & Whitney Canada Corp. | Airfoil with stepped spanwise thickness distribution |
JP6694950B2 (ja) * | 2016-03-30 | 2020-05-20 | 三菱重工エンジン&ターボチャージャ株式会社 | 可変容量型ターボチャージャ |
DE102016115868A1 (de) * | 2016-08-26 | 2018-03-01 | Rolls-Royce Deutschland Ltd & Co Kg | Strömungsarbeitsmaschine mit hohem Ausnutzungsgrad |
CN106593943B (zh) * | 2016-12-06 | 2019-01-04 | 大连理工大学 | 一种基于中间线控制的核主泵流道成型方法 |
IT202000005146A1 (it) * | 2020-03-11 | 2021-09-11 | Ge Avio Srl | Motore a turbina con profilo aerodinamico avente alta accelerazione e bassa curva di paletta |
CN112145409B (zh) * | 2020-08-28 | 2022-04-26 | 江苏大学 | 一种泵入口翼板非均匀来流抑制装置 |
CN114109893B (zh) * | 2022-01-27 | 2022-06-21 | 中国航发上海商用航空发动机制造有限责任公司 | 压气机叶片的造型方法以及压气机叶片 |
US12071889B2 (en) | 2022-04-05 | 2024-08-27 | General Electric Company | Counter-rotating turbine |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2835349C2 (de) * | 1978-08-11 | 1979-12-20 | Mtu Motoren- Und Turbinen-Union Muenchen Gmbh, 8000 Muenchen | Verstelleitgitter für hochbelastete Verdichter, insbesondere von Gasturbinentriebwerken |
US5221181A (en) * | 1990-10-24 | 1993-06-22 | Westinghouse Electric Corp. | Stationary turbine blade having diaphragm construction |
GB9119846D0 (en) * | 1991-09-17 | 1991-10-30 | Rolls Royce Plc | Aerofoil members for gas turbine engines and method of making the same |
JP3082378B2 (ja) * | 1991-12-20 | 2000-08-28 | 株式会社デンソー | 送風ファン |
DE4344189C1 (de) | 1993-12-23 | 1995-08-03 | Mtu Muenchen Gmbh | Axial-Schaufelgitter mit gepfeilten Schaufelvorderkanten |
US5492446A (en) * | 1994-12-15 | 1996-02-20 | General Electric Company | Self-aligning variable stator vane |
ES2212251T3 (es) | 1998-03-23 | 2004-07-16 | Spal S.R.L. | Ventilador de flujo axial. |
EP0945625B1 (fr) | 1998-03-23 | 2004-03-03 | SPAL S.r.l. | Ventilateur à courant axial |
US6129528A (en) * | 1998-07-20 | 2000-10-10 | Nmb Usa Inc. | Axial flow fan having a compact circuit board and impeller blade arrangement |
US6299412B1 (en) | 1999-12-06 | 2001-10-09 | General Electric Company | Bowed compressor airfoil |
US6331100B1 (en) | 1999-12-06 | 2001-12-18 | General Electric Company | Doubled bowed compressor airfoil |
US6457938B1 (en) * | 2001-03-30 | 2002-10-01 | General Electric Company | Wide angle guide vane |
EP1508669B1 (fr) * | 2003-08-19 | 2007-03-21 | Siemens Aktiengesellschaft | Diaphragme pour compresseur et turbine |
ITMI20032388A1 (it) * | 2003-12-05 | 2005-06-06 | Nuovo Pignone Spa | Ugello variabile per una turbina a gas. |
-
2005
- 2005-12-19 DE DE102005060699A patent/DE102005060699A1/de not_active Withdrawn
-
2006
- 2006-11-23 DE DE502006008986T patent/DE502006008986D1/de active Active
- 2006-11-23 EP EP06024318A patent/EP1798375B1/fr not_active Not-in-force
- 2006-12-18 US US11/640,404 patent/US7416382B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP1798375A3 (fr) | 2008-10-29 |
EP1798375A2 (fr) | 2007-06-20 |
US7416382B2 (en) | 2008-08-26 |
DE502006008986D1 (de) | 2011-04-14 |
DE102005060699A1 (de) | 2007-06-21 |
US20070140837A1 (en) | 2007-06-21 |
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