DE10019546B4 - Steam turbine with a rotor and / or a stator associated blade carrier - Google Patents
Steam turbine with a rotor and / or a stator associated blade carrier Download PDFInfo
- Publication number
- DE10019546B4 DE10019546B4 DE10019546.6A DE10019546A DE10019546B4 DE 10019546 B4 DE10019546 B4 DE 10019546B4 DE 10019546 A DE10019546 A DE 10019546A DE 10019546 B4 DE10019546 B4 DE 10019546B4
- Authority
- DE
- Germany
- Prior art keywords
- blade carrier
- cover plate
- rounding
- rotor
- steam
- 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.)
- Revoked
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
- F01D5/145—Means for influencing boundary layers or secondary circulations
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and 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)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
Dampfturbine mit einem Rotor (1) und einem Stator (2) zugeordneten Schaufelträger (3, 3a), einer die freien Enden der Schaufeln übergreifenden Deckplatte (6, 6a) und einer zwischen Deckplatte und Stator bzw. Rotor angeordneten mehrere Dichtstreifen (7) aufweisenden Labyrinthdichtung (8), dadurch gekennzeichnet, dass in Strömungsrichtung (5) des Dampfes betrachtet, eine Vorderkante (14) des der Deckplatte (6, 6a) nachgeordneten Schaufelträgers (3, 3a) eine Abrundung (13) aufweist, und dass eine dem Schaufelträger (3, 3a) zugewandte Außenumfangsfläche (10, 18) der Deckplatte (6, 6a) in ihrer gedachten Verlängerung (11, 11a) zwischen einem Fußpunkt (12) und einem Endpunkt (16) der Abrundung (13) auf dieselbe trifft, dass die Abrundung (13) in Strömungsrichtung (5) des Dampfs betrachtet an der Vorderkante (14) des Schaufelträgers (3, 3a) beginnt und dass der Fußpunkt (12) des Schaufelträgers (3, 3a) in Strömungsrichtung (5) des Dampfs betrachtet hinter einer dem Schaufelträger (3, 3a) zugewandten Außenumfangskante (9) angeordnet ist.Steam turbine with a rotor (1) and a stator (2) associated with the blade carrier (3, 3a), one of the free ends of the blades cross-cover plate (6, 6a) and arranged between the cover plate and stator or rotor a plurality of sealing strips (7) Labyrinth seal (8), characterized in that viewed in the direction of flow (5) of the steam, a front edge (14) of the cover plate (6, 6a) downstream blade carrier (3, 3a) has a rounding (13), and that one of the blade carrier (3, 3a) facing the outer surface (10, 18) of the cover plate (6, 6a) in its imaginary extension (11, 11a) between a foot point (12) and an end point (16) of the rounding (13) meets the same, that the rounding (13) in the flow direction (5) of the steam considered at the front edge (14) of the blade carrier (3, 3a) starts and that the base point (12) of the blade carrier (3, 3a) in the flow direction (5) of the vapor viewed behind one of the blade carrier he (3, 3a) facing outer peripheral edge (9) is arranged.
Description
Die Erfindung betrifft eine Dampfturbine nach dem Oberbegriff des Anspruchs 1.The invention relates to a steam turbine according to the preamble of
Bei derartigen allgemein bekannten Dampfturbinen dienen die im wesentlichen aus Deckplatte und Dichtstreifen gebildeten Labyrinthdichtungen der Reduzierung von Leckageverlusten.In such well-known steam turbines, the labyrinth seals formed essentially from cover plate and sealing strip serve to reduce leakage losses.
Seither weisen die Kanten der Deckplatte einen über seine ganze Länge konstanten Radius auf. Bei der der Deckplatte nachgeordneten Schaufel steigt der Radius des Schaufelträgers linear an bzw. bleibt konstant. In Folge dieser Kombination der Geometrie besitzt der Leckagemassenstrom der Labyrinthdichtung beim Wiedereintritt in die Hauptströmung des Dampfes eine große radiale Komponente und tritt nahezu senkrecht zur Hauptströmungsrichtung in den Dampfstrom ein. Die Folge ist ein erheblicher Strömungsverlust bei der Hauptströmung.Since then, the edges of the cover plate on a constant over its entire length radius. In the case of the blade following the cover plate, the radius of the blade carrier increases linearly or remains constant. As a result of this combination of geometry, the leakage mass flow of the labyrinth seal upon reentry into the main flow of steam has a large radial component and enters the vapor stream nearly perpendicular to the main flow direction. The result is a significant flow loss in the mainstream.
Die
Die
Es stellt sich die Aufgabe, den Strömungsverlust bei einer Dampfturbine der eingangsgenannten Art zu reduzieren.It has as its object to reduce the flow loss in a steam turbine of the type mentioned.
Gelöst wird diese Aufgabe erfindungsgemäß durch die im Anspruch 1 angegebenen Merkmale.This object is achieved according to the invention by the features specified in
Durch die erfindungsgemäße Abrundung und das dadurch herbeigeführte zwangsläufige Auftreffen des Leckagemassenstromes auf die Abrundung wird die Radialkomponente und somit die Eindringtiefe des Leckagemassenstromes reduziert. Diese Maßnahmen tragen zu einer erheblichen Verlustminderung bei, da der Leckagemassenstrom weitgehend in der Hauptströmungsrichtung des Dampfes auf die der Deckplatte nachgeordnete Schaufel trifft.Due to the rounding according to the invention and the inevitable impingement of the leakage mass flow on the rounding caused thereby, the radial component and thus the penetration depth of the leakage mass flow are reduced. These measures contribute to a significant reduction in loss, since the leakage mass flow largely meets in the main flow direction of the steam on the cover plate downstream blade.
Bei stark ausgebildeter Wandung der Deckplatte kann deren Außenumfangsfläche entsprechend abgeschrägt werden, so dass die dadurch gebildete Außenumfangskante auf die Ebene der Abrundung zu liegen kommt. Die Geometrie von Abschrägung und/oder Abrundung ist dabei in Abhängigkeit der konstruktiven Gegebenheiten im Bereich der Dampfdurchleitung gewählt.In strongly trained wall of the cover plate whose outer peripheral surface can be chamfered accordingly, so that the outer peripheral edge formed thereby comes to lie on the plane of the rounding. The geometry of bevel and / or rounding is selected depending on the structural conditions in the area of the vapor transmission.
Abhängig von diesen konstruktiven Gegebenheiten kann die Abschrägung kürzer oder länger sein bzw. steiler oder flacher verlaufen und die Abrundung verschiedene Konfigurationen haben. Wesentlich ist, dass eine Kombination und eine Geometrie gefunden wird, die die Umlenkung des Leckagemassenstroms in Richtung Hauptdampfstrom unterstützt.Depending on these structural conditions, the bevel may be shorter or longer, or may be steeper or flatter, and the rounding may have different configurations. It is essential that a combination and a geometry is found, which supports the deflection of the leakage mass flow in the direction of the main steam flow.
Anhand eines Ausführungsbeispiels und der schematischen
Dabei zeigt:Showing:
Die
Wie die
Ein weiteres Ausführungsbeispiel zeigt die
Claims (2)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10019546.6A DE10019546B4 (en) | 2000-04-20 | 2000-04-20 | Steam turbine with a rotor and / or a stator associated blade carrier |
AU2001270490A AU2001270490A1 (en) | 2000-04-20 | 2001-04-19 | Steam turbine comprising a blade support allocated to a rotor and/or a stator |
PCT/EP2001/004444 WO2001081731A1 (en) | 2000-04-20 | 2001-04-19 | Steam turbine comprising a blade support allocated to a rotor and/or a stator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10019546.6A DE10019546B4 (en) | 2000-04-20 | 2000-04-20 | Steam turbine with a rotor and / or a stator associated blade carrier |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10019546A1 DE10019546A1 (en) | 2001-10-25 |
DE10019546B4 true DE10019546B4 (en) | 2016-04-07 |
Family
ID=7639411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10019546.6A Revoked DE10019546B4 (en) | 2000-04-20 | 2000-04-20 | Steam turbine with a rotor and / or a stator associated blade carrier |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2001270490A1 (en) |
DE (1) | DE10019546B4 (en) |
WO (1) | WO2001081731A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59710924D1 (en) * | 1997-09-15 | 2003-12-04 | Alstom Switzerland Ltd | Cooling device for gas turbine components |
EP2055902A1 (en) * | 2007-10-31 | 2009-05-06 | Siemens Aktiengesellschaft | Turbine for a thermal power plant comprising a rotor bucket and a guide bucket |
EP2055896A1 (en) * | 2007-10-31 | 2009-05-06 | Siemens Aktiengesellschaft | Bucket for a turbine of a thermal power plant having a foot section |
US11053807B2 (en) | 2017-06-12 | 2021-07-06 | Mitsubishi Power, Ltd. | Axial flow rotating machine |
BE1025961B1 (en) * | 2018-01-30 | 2019-08-28 | Safran Aero Boosters S.A. | ANNULAR PASSAGE BETWEEN A VIROLE AND A ROTORIC PLATFORM OF TURBOMACHINE |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69210462T2 (en) * | 1991-04-19 | 1996-09-05 | Alsthom Gec | Action turbines |
DE69400688T2 (en) * | 1993-07-15 | 1997-02-27 | Snecma | Cooling of turbine rotor disk |
EP0799973A1 (en) * | 1996-04-01 | 1997-10-08 | Asea Brown Boveri Ag | Wall contour for an axial turbomachine |
DE19811294A1 (en) * | 1997-03-18 | 1998-09-24 | Mitsubishi Heavy Ind Ltd | Gas turbine sealing system between blade shroud and platform |
WO1998058159A1 (en) * | 1997-06-18 | 1998-12-23 | Mitsubishi Heavy Industries, Ltd. | Seal structure for gas turbines |
EP0894944A1 (en) * | 1997-07-29 | 1999-02-03 | Siemens Aktiengesellschaft | Turbine blading |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR976791A (en) * | 1948-10-19 | 1951-03-22 | Improvements to axial compressors |
-
2000
- 2000-04-20 DE DE10019546.6A patent/DE10019546B4/en not_active Revoked
-
2001
- 2001-04-19 WO PCT/EP2001/004444 patent/WO2001081731A1/en active Application Filing
- 2001-04-19 AU AU2001270490A patent/AU2001270490A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69210462T2 (en) * | 1991-04-19 | 1996-09-05 | Alsthom Gec | Action turbines |
DE69400688T2 (en) * | 1993-07-15 | 1997-02-27 | Snecma | Cooling of turbine rotor disk |
EP0799973A1 (en) * | 1996-04-01 | 1997-10-08 | Asea Brown Boveri Ag | Wall contour for an axial turbomachine |
DE19811294A1 (en) * | 1997-03-18 | 1998-09-24 | Mitsubishi Heavy Ind Ltd | Gas turbine sealing system between blade shroud and platform |
WO1998058159A1 (en) * | 1997-06-18 | 1998-12-23 | Mitsubishi Heavy Industries, Ltd. | Seal structure for gas turbines |
DE69828255T2 (en) * | 1997-06-18 | 2005-12-22 | Mitsubishi Heavy Industries, Ltd. | SEAL STRUCTURE FOR GAS TURBINES |
EP0894944A1 (en) * | 1997-07-29 | 1999-02-03 | Siemens Aktiengesellschaft | Turbine blading |
Also Published As
Publication number | Publication date |
---|---|
DE10019546A1 (en) | 2001-10-25 |
AU2001270490A1 (en) | 2001-11-07 |
WO2001081731A1 (en) | 2001-11-01 |
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Legal Events
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: ABB PATENT GMBH, 68526 LADENBURG, DE |
|
8127 | New person/name/address of the applicant |
Owner name: ALSTOM, PARIS, FR |
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8110 | Request for examination paragraph 44 | ||
R082 | Change of representative |
Representative=s name: ROESLER PATENTANWALTSKANZLEI, DE |
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R081 | Change of applicant/patentee |
Owner name: ALSTOM TECHNOLOGY LTD., CH Free format text: FORMER OWNER: ALSTOM, PARIS, FR Effective date: 20130508 Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH, CH Free format text: FORMER OWNER: ALSTOM, PARIS, FR Effective date: 20130508 |
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R082 | Change of representative |
Representative=s name: ROESLER PATENTANWALTSKANZLEI, DE Effective date: 20130508 Representative=s name: DREISS PATENTANWAELTE PARTNERSCHAFT, DE Effective date: 20130508 Representative=s name: DREISS PATENTANWAELTE PARTG MBB, DE Effective date: 20130508 Representative=s name: RUEGER, BARTHELT & ABEL, DE Effective date: 20130508 Representative=s name: RUEGER ] ABEL PATENT- UND RECHTSANWAELTE, DE Effective date: 20130508 Representative=s name: RUEGER ABEL PATENT- UND RECHTSANWAELTE, DE Effective date: 20130508 |
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R016 | Response to examination communication | ||
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R082 | Change of representative |
Representative=s name: DREISS PATENTANWAELTE PARTG MBB, DE Representative=s name: RUEGER, BARTHELT & ABEL, DE Representative=s name: DREISS PATENTANWAELTE PARTNERSCHAFT, DE Representative=s name: RUEGER ] ABEL PATENT- UND RECHTSANWAELTE, DE Representative=s name: RUEGER ABEL PATENT- UND RECHTSANWAELTE, DE |
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R018 | Grant decision by examination section/examining division | ||
R082 | Change of representative |
Representative=s name: RUEGER ABEL PATENTANWAELTE PARTGMBB, DE Representative=s name: RUEGER, BARTHELT & ABEL, DE Representative=s name: RUEGER ] ABEL PATENT- UND RECHTSANWAELTE, DE Representative=s name: RUEGER ABEL PATENT- UND RECHTSANWAELTE, DE |
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R081 | Change of applicant/patentee |
Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH, CH Free format text: FORMER OWNER: ALSTOM TECHNOLOGY LTD., BADEN, CH |
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R082 | Change of representative |
Representative=s name: RUEGER ABEL PATENTANWAELTE PARTGMBB, DE Representative=s name: RUEGER, BARTHELT & ABEL, DE Representative=s name: RUEGER ] ABEL PATENT- UND RECHTSANWAELTE, DE Representative=s name: RUEGER ABEL PATENT- UND RECHTSANWAELTE, DE |
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R026 | Opposition filed against patent | ||
R037 | Decision of examining division or of federal patent court revoking patent now final |