EP0916812A1 - Endstufe für axialdurchströmte Turbine - Google Patents
Endstufe für axialdurchströmte Turbine Download PDFInfo
- Publication number
- EP0916812A1 EP0916812A1 EP97810873A EP97810873A EP0916812A1 EP 0916812 A1 EP0916812 A1 EP 0916812A1 EP 97810873 A EP97810873 A EP 97810873A EP 97810873 A EP97810873 A EP 97810873A EP 0916812 A1 EP0916812 A1 EP 0916812A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- guide
- radial
- blade
- stator
- 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
Images
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
- F01D5/142—Shape, i.e. outer, aerodynamic form of the blades of successive rotor or stator blade-rows
-
- 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
- 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
Definitions
- the invention relates to the final stage of a turbine with a large axial flow Channel divergence with a series of curved guide vanes and a series of tapered, twisted blades.
- Curved vanes are used in particular to reduce secondary losses reduce by redirecting the boundary layers in the Guide vanes are created.
- Turbines with guide vanes curved in the axial direction and in the circumferential direction are known for example from DE-A-42 28 879. Upstream of the playpen a fixed guide grill is arranged. Whose blades are regarding The number as well as the relationship between chord and pitch in terms of flow technology optimized for full load. They give the flow for entry into the Playpen required swirl. The curvature of the blades is vertical to the tendon, which is caused by a displacement of the profile cuts both in the circumferential direction as well as in the axial direction. The curvature of the guide vanes is against the pressure side of the adjacent in the circumferential direction Guide vane directed. This curvature is created by a continuous arc formed with the shovel carrier and with the have an acute angle forms.
- the present invention has for its object in an axially flow Turbine of the type mentioned, in particular one with small hub ratio to create a measure by which the detachment the flow from the hub can be avoided and with the more even Pressure distribution over the blading height can be achieved.
- FIG. 1 In the steam turbine shown schematically in FIG. 1, these are the flow through Channel 1 bounding walls on the one hand the rotor-side channel limitation 3 and on the other hand the stator-side channel limitation 5.
- the output stage exists from a row of guide vanes 10 and a row of moving blades 20.
- the guide vanes are attached in a manner not shown in the stator 4, the Blade carrier itself is suspended in a suitable manner in an outer housing.
- the blades 20 are fastened in the rotor 2 in a manner not shown.
- the blade airfoil is tapered in its longitudinal extension and strongly twisted (twisted). The airfoil seals against the stator-side channel boundary 5 with its top.
- the rotor-side channel boundary 3 runs in the entire blading area cylindrical while due to the volume increase of the expanding working medium the stator-side channel boundary 5 is conical and at highly loaded machines can have an opening angle of up to 60 °. It goes without saying that the inner channel contour is also conical can.
- the guide vanes 10 are on their in the axial direction end of the rotor on the rotor side is a positive arrow and a negative arrow on its end on the stator side,
- the sweep which is both the leading blade edge 11 and the
- the guide vane trailing edge 12 relates here to the cylindrical Course of the rotor-side channel limitation 2.
- the arrow angle A is selected so that the guide vane trailing edge 12 is at least approximately parallel to the leading edge 21 of the blade 20 runs.
- This positive arrow extends to approx. 2/3 of the bucket height. It causes radial channel limitation to the rotor side 3 acting force on the flow, like this from the course of the meridian streamlines 6 is recognizable.
- the selected contour adapted to the shape of the leading edge 21 of the blade the guide vane trailing edge 12 also allows in the lower 2/3 of the flowed channel the setting of the radially variable optimal length of the blade-free axial diffuser between the guide and barrel rows.
- This axial diffuser that occurs in the blade-free space due to the strong channel divergence, has a width C in the example. The narrower this axial diffuser is is, the cheaper this affects the design of the following Blade from. The less the fluid in this area in his Axial component is delayed, the greater the stagger angle of the subsequent blade profile can be selected. About the considered bucket height has the consequence that the airfoil is less twisted overall (twisted) must be.
- FIG. 2 A further measure is shown in FIG. 2, which advantageously relates to the displacement the flow affects the rotor-side channel boundary.
- the guide vanes 10 over a large part of their radial extent in the circumferential direction inclined in such a way that the inclination towards the suction side 13 which is directed in the circumferential direction adjacent vane 10 '.
- On the end of the rotor is directed radially. From about 15% of the radial extension it inclines in the circumferential direction and returns on its stator side End back in the radial R.
- a Angle of inclination B to the radial R in the range of 10-17 °, preferably 12-15 ° a sufficiently large force acting radially towards the rotor on the flow generated and pressed against the rotor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Es zeigen:
- 1
- Kanal
- 2
- Rotor
- 3
- rotorseitige Kanalbegrenzung
- 4
- Stator, Schaufelträger (vane carrier)
- 5
- statorseitige Kanalbegrenzung
- 6
- Meridianstromlinien
- 10
- Leitschaufel (vane)
- 11
- Leitschaufelvorderkante (leading edge)
- 12
- Leitschaufelhinterkante (trailing edge)
- 13
- Leitschaufel-Saugseite (suction side)
- 14
- Leitschaufel-Druckseite (pressure side)
- 20
- Laufschaufel (blade)
- 21
- Laufschaufelvorderkante
- R
- Radiale
- A
- Pfeilungswinkel (sweep angle)
- B
- Neigungswinkel (lean angle)
- C
- Breite des Axialdiffusors zwischen 10 und 20
Claims (6)
- Endstufe einer axialdurchströmten Turbine mit grosser Kanaldivergenz mit einer Reihe gekrümmter Leitschaufeln (10) und einer Reihe verjüngter, verdrehter Laufschaufeln (20), dadurch gekennzeichnet, dass die Leitschaufeln in axialer Richtung an ihrem rotorseitigen Ende Kopf positiv und an ihrem statorseitigen Ende negativ gepfeilt sind, bezogen auf den Verlauf der rotorsseitigen Kanalbegrenzung (2).
- Endstufe nach Anspruch 1, dadurch gekennzeichnet, dass die positive Pfeilung der Leitschaufelhinterkante (12) über einen Grossteil der radialen Erstreckung parallel zur Vorderkante (21) der Laufschaufel (20) verläuft.
- Endstufe nach Anspruch 1, dadurch gekennzeichnet, dass die negative Pfeilung am statorseitigen Ende so gewählt ist, dass die Leitschaufelhinterkante (12) und/oder die Leitschaufelvorderkante (11) zum mindestens annähernd senkrecht zur strömungsbegrenzenden Wand (5) gerichtet ist.
- Endstufe nach Anspruch 1, dadurch gekennzeichnet, dass die Leitschaufeln (10) über einen Grossteil ihrer radialen Erstreckung in Umfangsrichtung geneigt sind und dass die Neigung gegen die Saugseite (13) der jeweils in Umfangsrichtung benachbarten Leitschaufel (11') gerichtet ist.
- Endstufe nach Anspruch 4, dadurch gekennzeichnet, dass die Leitschaufel (10) an ihrem rotorseitigen Ende radial gerichtet ist, sich ab ca. 15% der radialen Erstreckung in Umfangsrichtung neigt und sich an ihrem statorseitigen Ende wieder zumindest annähernd in die Radiale (R) zurückneigt.
- Endstufe nach Anspruch 5, dadurch gekennzeichnet, dass der Neigungswinkel (B) zur Radialen (R) ca. 12-15° beträgt.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97810873A EP0916812B1 (de) | 1997-11-17 | 1997-11-17 | Endstufe für axialdurchströmte Turbine |
DE59709447T DE59709447D1 (de) | 1997-11-17 | 1997-11-17 | Endstufe für axialdurchströmte Turbine |
US09/190,366 US6099248A (en) | 1997-11-17 | 1998-11-12 | Output stage for an axial-flow turbine |
KR1019980049088A KR19990045318A (ko) | 1997-11-17 | 1998-11-16 | 축류터빈의 출력단 |
CN98123390.2A CN1250863C (zh) | 1997-11-17 | 1998-11-17 | 轴流式透平的输出级 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97810873A EP0916812B1 (de) | 1997-11-17 | 1997-11-17 | Endstufe für axialdurchströmte Turbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0916812A1 true EP0916812A1 (de) | 1999-05-19 |
EP0916812B1 EP0916812B1 (de) | 2003-03-05 |
Family
ID=8230472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97810873A Expired - Lifetime EP0916812B1 (de) | 1997-11-17 | 1997-11-17 | Endstufe für axialdurchströmte Turbine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6099248A (de) |
EP (1) | EP0916812B1 (de) |
KR (1) | KR19990045318A (de) |
CN (1) | CN1250863C (de) |
DE (1) | DE59709447D1 (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008128877A1 (de) | 2007-04-24 | 2008-10-30 | Alstom Technology Ltd | Strömungsmaschine |
EP2075408A2 (de) * | 2007-12-28 | 2009-07-01 | Ansaldo Energia S.P.A. | Leitschaufel auf letzter Stufe des Niederdruckabschnitts einer Dampfturbine |
DE102008004014A1 (de) * | 2008-01-11 | 2009-07-23 | Continental Automotive Gmbh | Leitschaufel für eine variable Turbinengeometrie |
WO2009118234A1 (de) * | 2008-03-28 | 2009-10-01 | Alstom Technology Ltd | Schaufel für eine rotierende thermische maschine |
CN102235241A (zh) * | 2011-06-28 | 2011-11-09 | 北京动力机械研究所 | 入口带大扩张通道的低压涡轮结构 |
US8167548B2 (en) | 2007-11-09 | 2012-05-01 | Alstom Technology Ltd. | Steam turbine |
EP2568120A3 (de) * | 2011-09-09 | 2017-12-27 | Rolls-Royce plc | Turbinenmotorstator und Montageverfahren dafür |
EP3530880A1 (de) * | 2018-02-26 | 2019-08-28 | MTU Aero Engines GmbH | Leitschaufelblatt mit geneigtem abschnitt, zugehöriges leitschaufelsegment, modul, strömungsmaschine und verfahren zum entwerfen eines moduls |
US11566530B2 (en) | 2019-11-26 | 2023-01-31 | General Electric Company | Turbomachine nozzle with an airfoil having a circular trailing edge |
US11629599B2 (en) | 2019-11-26 | 2023-04-18 | General Electric Company | Turbomachine nozzle with an airfoil having a curvilinear trailing edge |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7025576B2 (en) | 2001-03-30 | 2006-04-11 | Chaffee Robert B | Pump with axial conduit |
CN1632324B (zh) * | 2000-05-17 | 2010-09-08 | 罗伯特·B·查飞 | 带凹进的流动控制器和改进的调整装置的充气装置 |
US7644724B2 (en) | 2000-05-17 | 2010-01-12 | Robert Chaffee | Valve with electromechanical device for actuating the valve |
DE10051223A1 (de) | 2000-10-16 | 2002-04-25 | Alstom Switzerland Ltd | Verbindbare Statorelemente |
DE60211696T2 (de) | 2001-07-10 | 2007-05-16 | Robert B. Boston Chaffee | Konfigurierbare aufblasbare unterstützvorrichtung |
ATE363848T1 (de) | 2002-11-18 | 2007-06-15 | Robert B Chaffee | Aufblasbare vorrichtung |
CA2528332A1 (en) * | 2003-06-09 | 2005-01-06 | Aero International Products, Inc. | Reversible inflation system |
PL1642005T3 (pl) * | 2003-07-09 | 2010-03-31 | Siemens Ag | Łopatka turbiny |
US7547187B2 (en) * | 2005-03-31 | 2009-06-16 | Hitachi, Ltd. | Axial turbine |
US7588425B2 (en) * | 2005-03-18 | 2009-09-15 | Aero Products International, Inc. | Reversible inflation system |
US7510371B2 (en) * | 2005-06-06 | 2009-03-31 | General Electric Company | Forward tilted turbine nozzle |
DE112007000717A5 (de) * | 2006-03-31 | 2009-02-19 | Alstom Technology Ltd. | Leitschaufel für eine Strömungsmaschine, insbesondere für eine Dampfturbine |
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 |
US20100303604A1 (en) * | 2009-05-27 | 2010-12-02 | Dresser-Rand Company | System and method to reduce acoustic signature using profiled stage design |
US9011084B2 (en) | 2010-09-28 | 2015-04-21 | Mitsubishi Hitachi Power Systems, Ltd. | Steam turbine stator vane and steam turbine using the same |
US9488055B2 (en) | 2012-06-08 | 2016-11-08 | General Electric Company | Turbine engine and aerodynamic element of turbine engine |
US20160201468A1 (en) * | 2015-01-13 | 2016-07-14 | General Electric Company | Turbine airfoil |
JP7061497B2 (ja) * | 2018-03-30 | 2022-04-28 | 三菱重工航空エンジン株式会社 | 航空機用ガスタービン |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH344800A (fr) * | 1949-04-26 | 1960-02-29 | Canadian Patents Dev | Turbo-machine |
GB1080015A (en) * | 1963-11-13 | 1967-08-23 | English Electric Co Ltd | Steam turbines |
GB1116580A (en) * | 1965-11-17 | 1968-06-06 | Bristol Siddeley Engines Ltd | Stator blade assemblies for axial-flow turbine engines |
GB2095764A (en) * | 1981-03-26 | 1982-10-06 | Gen Electric | Turbine arrangement |
EP0089600A1 (de) * | 1982-03-19 | 1983-09-28 | Gec Alsthom Sa | Leitschaufelanordnung für Dampfturbinen mit divergierenden Kanal |
GB2164098A (en) * | 1984-09-07 | 1986-03-12 | Rolls Royce | Improvements in or relating to aerofoil section members for turbine engines |
EP0260175A1 (de) * | 1986-09-12 | 1988-03-16 | Ecia - Equipements Et Composants Pour L'industrie Automobile | Profilierter Propellerflügel und seine Anwendung in Motorventilatoren |
GB2199379A (en) * | 1986-12-29 | 1988-07-06 | Gen Electric | Curvilinear turbine vane |
EP0661413A1 (de) * | 1993-12-23 | 1995-07-05 | Mtu Motoren- Und Turbinen-Union MàNchen Gmbh | Axial-Schaufelgitter mit gepfeilten Schaufelvorderkanten |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2505399A1 (fr) * | 1981-05-05 | 1982-11-12 | Alsthom Atlantique | Aubage directeur pour veines divergentes de turbine a vapeur |
JP2753382B2 (ja) * | 1990-09-17 | 1998-05-20 | 株式会社日立製作所 | 軸流タービン静翼装置及び軸流タービン |
DE4228879A1 (de) * | 1992-08-29 | 1994-03-03 | Asea Brown Boveri | Axialdurchströmte Turbine |
-
1997
- 1997-11-17 EP EP97810873A patent/EP0916812B1/de not_active Expired - Lifetime
- 1997-11-17 DE DE59709447T patent/DE59709447D1/de not_active Expired - Lifetime
-
1998
- 1998-11-12 US US09/190,366 patent/US6099248A/en not_active Expired - Lifetime
- 1998-11-16 KR KR1019980049088A patent/KR19990045318A/ko not_active Application Discontinuation
- 1998-11-17 CN CN98123390.2A patent/CN1250863C/zh not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH344800A (fr) * | 1949-04-26 | 1960-02-29 | Canadian Patents Dev | Turbo-machine |
GB1080015A (en) * | 1963-11-13 | 1967-08-23 | English Electric Co Ltd | Steam turbines |
GB1116580A (en) * | 1965-11-17 | 1968-06-06 | Bristol Siddeley Engines Ltd | Stator blade assemblies for axial-flow turbine engines |
GB2095764A (en) * | 1981-03-26 | 1982-10-06 | Gen Electric | Turbine arrangement |
EP0089600A1 (de) * | 1982-03-19 | 1983-09-28 | Gec Alsthom Sa | Leitschaufelanordnung für Dampfturbinen mit divergierenden Kanal |
GB2164098A (en) * | 1984-09-07 | 1986-03-12 | Rolls Royce | Improvements in or relating to aerofoil section members for turbine engines |
EP0260175A1 (de) * | 1986-09-12 | 1988-03-16 | Ecia - Equipements Et Composants Pour L'industrie Automobile | Profilierter Propellerflügel und seine Anwendung in Motorventilatoren |
GB2199379A (en) * | 1986-12-29 | 1988-07-06 | Gen Electric | Curvilinear turbine vane |
EP0661413A1 (de) * | 1993-12-23 | 1995-07-05 | Mtu Motoren- Und Turbinen-Union MàNchen Gmbh | Axial-Schaufelgitter mit gepfeilten Schaufelvorderkanten |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008128877A1 (de) | 2007-04-24 | 2008-10-30 | Alstom Technology Ltd | Strömungsmaschine |
US8043052B2 (en) | 2007-04-24 | 2011-10-25 | Alstom Technology Ltd. | Fluid flow machine |
US8167548B2 (en) | 2007-11-09 | 2012-05-01 | Alstom Technology Ltd. | Steam turbine |
EP2075408A2 (de) * | 2007-12-28 | 2009-07-01 | Ansaldo Energia S.P.A. | Leitschaufel auf letzter Stufe des Niederdruckabschnitts einer Dampfturbine |
EP2075408A3 (de) * | 2007-12-28 | 2013-03-06 | Ansaldo Energia S.P.A. | Leitschaufel auf letzter Stufe des Niederdruckabschnitts einer Dampfturbine |
DE102008004014A1 (de) * | 2008-01-11 | 2009-07-23 | Continental Automotive Gmbh | Leitschaufel für eine variable Turbinengeometrie |
WO2009118234A1 (de) * | 2008-03-28 | 2009-10-01 | Alstom Technology Ltd | Schaufel für eine rotierende thermische maschine |
CN102235241A (zh) * | 2011-06-28 | 2011-11-09 | 北京动力机械研究所 | 入口带大扩张通道的低压涡轮结构 |
EP2568120A3 (de) * | 2011-09-09 | 2017-12-27 | Rolls-Royce plc | Turbinenmotorstator und Montageverfahren dafür |
EP3530880A1 (de) * | 2018-02-26 | 2019-08-28 | MTU Aero Engines GmbH | Leitschaufelblatt mit geneigtem abschnitt, zugehöriges leitschaufelsegment, modul, strömungsmaschine und verfahren zum entwerfen eines moduls |
DE102018202888A1 (de) * | 2018-02-26 | 2019-08-29 | MTU Aero Engines AG | Leitschaufelblatt für den Heissgaskanal einer Strömungsmaschine |
US11220911B2 (en) | 2018-02-26 | 2022-01-11 | MTU Aero Engines AG | Guide vane airfoil for the hot gas flow path of a turbomachine |
US11566530B2 (en) | 2019-11-26 | 2023-01-31 | General Electric Company | Turbomachine nozzle with an airfoil having a circular trailing edge |
US11629599B2 (en) | 2019-11-26 | 2023-04-18 | General Electric Company | Turbomachine nozzle with an airfoil having a curvilinear trailing edge |
Also Published As
Publication number | Publication date |
---|---|
CN1217419A (zh) | 1999-05-26 |
CN1250863C (zh) | 2006-04-12 |
EP0916812B1 (de) | 2003-03-05 |
US6099248A (en) | 2000-08-08 |
KR19990045318A (ko) | 1999-06-25 |
DE59709447D1 (de) | 2003-04-10 |
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