EP0863296A3 - Guide vane for steam turbines - Google Patents

Guide vane for steam turbines Download PDF

Info

Publication number
EP0863296A3
EP0863296A3 EP98810079A EP98810079A EP0863296A3 EP 0863296 A3 EP0863296 A3 EP 0863296A3 EP 98810079 A EP98810079 A EP 98810079A EP 98810079 A EP98810079 A EP 98810079A EP 0863296 A3 EP0863296 A3 EP 0863296A3
Authority
EP
European Patent Office
Prior art keywords
blade
guide vane
opening
cover
steam turbines
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.)
Withdrawn
Application number
EP98810079A
Other languages
German (de)
French (fr)
Other versions
EP0863296A2 (en
Inventor
Peter Dr. Ernst
Kurt Faller
Reinhard Fried
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.)
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
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
Application filed by ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Publication of EP0863296A2 publication Critical patent/EP0863296A2/en
Publication of EP0863296A3 publication Critical patent/EP0863296A3/en
Withdrawn legal-status Critical Current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
    • F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/182—Transpiration cooling
    • F01D5/183—Blade walls being porous
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles

Abstract

Eine Leitschaufel für Dampfturbinen mit einem durch einen Unterdruck beaufschlagten Hohlraum (18) im Schaufelinnern ist mit einer Öffnung (3) für eine Fluidabsaugung im Bereich der Schaufelhinterkante (4) versehen. Diese Öffnung ist mit einer porösen, Abdeckung (7) versehen. Die Abdeckung ist so dimensioniert ist, dass ihre sämtlichen Kapillaren während des Betriebes mit dem abzusaugenden Fluid gefüllt sind. Sie ist mit einem mechanischen Befestigungselement (20) in der Leitschaufel verankert.A guide vane for steam turbines with a vacuum cavity (18) in the blade interior is provided with an opening (3) for fluid suction in the area of the blade rear edge (4). This opening is provided with a porous cover (7). The Coverage is sized to cover all of your capillaries are filled with the fluid to be extracted during operation. she is with a mechanical fastening element (20) in the guide vane anchored.

Das mechanische Befestigungselement (20) ist ein federbelasteter Schnellverschluss und besteht aus einer Büchse (21), welche die Abdeckung in der Schaufelöffnung (3) fixiert und mit ihrem zylindrischen Teil (24) in den Schaufelhohlraum (18) hineinragt sowie aus einen im Innern der Büchse axial verschiebbaren Dorn (25), welcher mit Federmittel (26) bestückt ist und an seinem Ende mit einer auf der Innenwand der Schaufel aufliegenden Kappe (28) versehen ist.

Figure 00000001
The mechanical fastening element (20) is a spring-loaded quick-release fastener and consists of a sleeve (21), which fixes the cover in the blade opening (3) and projects with its cylindrical part (24) into the blade cavity (18) and one inside the Bush axially displaceable mandrel (25) which is equipped with spring means (26) and is provided at its end with a cap (28) resting on the inner wall of the blade.
Figure 00000001
EP98810079A 1997-03-08 1998-02-04 Guide vane for steam turbines Withdrawn EP0863296A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19709607A DE19709607A1 (en) 1997-03-08 1997-03-08 Guide vane for steam turbines
DE19709607 1997-03-08

Publications (2)

Publication Number Publication Date
EP0863296A2 EP0863296A2 (en) 1998-09-09
EP0863296A3 true EP0863296A3 (en) 2001-03-21

Family

ID=7822721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810079A Withdrawn EP0863296A3 (en) 1997-03-08 1998-02-04 Guide vane for steam turbines

Country Status (3)

Country Link
US (1) US6007296A (en)
EP (1) EP0863296A3 (en)
DE (1) DE19709607A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59810560D1 (en) * 1998-11-30 2004-02-12 Alstom Switzerland Ltd blade cooling
EP1847696A1 (en) * 2006-04-21 2007-10-24 Siemens Aktiengesellschaft Component for a secondary combustion system in a gas turbine and corresponding gas turbine.
WO2009112400A1 (en) * 2008-03-11 2009-09-17 Alstom Technology Ltd Hollow-cast cast part
US8545170B2 (en) * 2009-10-27 2013-10-01 General Electric Company Turbo machine efficiency equalizer system
US9032733B2 (en) 2013-04-04 2015-05-19 General Electric Company Turbomachine system with direct header steam injection, related control system and program product
JP2015031185A (en) * 2013-08-01 2015-02-16 三菱日立パワーシステムズ株式会社 Moisture separator of steam turbine and steam turbine stator vane
JP6393178B2 (en) * 2014-12-15 2018-09-19 三菱日立パワーシステムズ株式会社 Steam turbine stationary blade
KR102230700B1 (en) * 2017-09-12 2021-03-23 한국기계연구원 Gas turbin blade

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58176404A (en) * 1982-04-08 1983-10-15 Mitsubishi Heavy Ind Ltd Drain removing device
US4762437A (en) * 1986-03-31 1988-08-09 Nifco Inc. Fastener
EP0726384A1 (en) * 1995-02-13 1996-08-14 Abb Research Ltd. Stator blade for steam turbines
JPH08284925A (en) * 1995-04-17 1996-11-01 Piolax Inc Fixing clip

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US741776A (en) * 1902-12-13 1903-10-20 Gen Electric Means for improving the efficiency of turbines.
GB1099501A (en) * 1964-05-12 1968-01-17 Merz And Mclellan Services Ltd Improvements relating to steam turbines
DE2038047A1 (en) 1970-07-31 1972-02-03 Maschf Augsburg Nuernberg Ag Drainage of the surfaces of the guide vanes and the flow space of steam turbines, especially saturated and wet steam turbines
US3778190A (en) * 1971-10-01 1973-12-11 Gen Electric Bucket cover attachment
GB1411057A (en) * 1973-04-06 1975-10-22 Kosyak J F Steam turbines
US3881842A (en) * 1973-04-10 1975-05-06 Jury Fedorovich Kosyak Diaphragm for steam turbine stage
US4812097A (en) * 1984-07-18 1989-03-14 Moulton Anthony D Spring action fastener
US4902181A (en) * 1984-07-18 1990-02-20 Moulton Anthony D Spring action fastener
CH671072A5 (en) * 1986-01-15 1989-07-31 Bbc Brown Boveri & Cie
US5267828A (en) * 1992-11-13 1993-12-07 General Electric Company Removable fan shroud panel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58176404A (en) * 1982-04-08 1983-10-15 Mitsubishi Heavy Ind Ltd Drain removing device
US4762437A (en) * 1986-03-31 1988-08-09 Nifco Inc. Fastener
EP0726384A1 (en) * 1995-02-13 1996-08-14 Abb Research Ltd. Stator blade for steam turbines
JPH08284925A (en) * 1995-04-17 1996-11-01 Piolax Inc Fixing clip
US5718549A (en) * 1995-04-17 1998-02-17 Piolax, Inc. Releasable two-part fixing clip

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BEITZ W: "Taschenbuch für den Maschinenbau / Dubbel", 1987, SPRINGER-VERLAG, BERLIN, XP002125416, 1 *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 016 (M - 270) 24 January 1984 (1984-01-24) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 03 31 March 1997 (1997-03-31) *

Also Published As

Publication number Publication date
US6007296A (en) 1999-12-28
EP0863296A2 (en) 1998-09-09
DE19709607A1 (en) 1998-09-10

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