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EP0965729B1 - Elément de verrouillage pour des aubes de turbine - Google Patents

Elément de verrouillage pour des aubes de turbine Download PDF

Info

Publication number
EP0965729B1
EP0965729B1 EP99108999A EP99108999A EP0965729B1 EP 0965729 B1 EP0965729 B1 EP 0965729B1 EP 99108999 A EP99108999 A EP 99108999A EP 99108999 A EP99108999 A EP 99108999A EP 0965729 B1 EP0965729 B1 EP 0965729B1
Authority
EP
European Patent Office
Prior art keywords
lock
turbine wheel
fitting
turbine rotor
turbine
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.)
Expired - Lifetime
Application number
EP99108999A
Other languages
German (de)
English (en)
Other versions
EP0965729A3 (fr
EP0965729A2 (fr
Inventor
Bernd Sokol
Horst Müller
Georg Dipl.-Ing. Feeder
Gerd Rupprecht
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.)
Alstom SA
Original Assignee
Alstom SA
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 Alstom SA filed Critical Alstom SA
Publication of EP0965729A2 publication Critical patent/EP0965729A2/fr
Publication of EP0965729A3 publication Critical patent/EP0965729A3/fr
Application granted granted Critical
Publication of EP0965729B1 publication Critical patent/EP0965729B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/32—Locking, e.g. by final locking blades or keys
    • 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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
    • F01D5/3038—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot the slot having inwardly directed abutment faces on both sides

Definitions

  • the invention relates to a lock for blades of a turbine runner according to the preamble of claim 1.
  • a lock for turbine blading in which the blades form-fitting in the two sides in any shape undercut circumferential groove of the turbine rotor are used.
  • At the turbine rotor circumference At least one entry point is provided in which a with the blade root form-fitting filler is used.
  • the wall of the entry point in the turbine runner and this facing flank of the filler are designed inclined at an angle to the blade axis. The shutter between the wall of the entry point and the flank of the filler takes place with a tight fitted fitting.
  • the known lock is particularly suitable for foot shapes of the blades, where the blade feet completely in the axial direction of the turbine rotor the circumferential groove are supported, for example for hammerhead feet. If the complete axial support of the blade root in the circumferential groove is missing - for example at Fannenbaum Stahl H - the blade foot in the lock area at Dodge installation of filler with oversize, so that in the castle not the required preload can be produced. Without bias of the Sch party veines can during operation the centrifugal effect at the oblique Flank of the lock, the fitting piece is not sufficient jam so that the fitting comes off the lock and the lock fails.
  • the invention has for its object to provide a lock for Blades of a turbine rotor of the type mentioned which is also suitable for blades in which the blade feet are not completely in the axial direction of the Turbine rotor are supported on the circumferential groove.
  • Fig. 1 is a section through a lock of a turbine rotor is shown.
  • Section A - B is sketched in FIG.
  • the axial support is direct through the filler 5 in the turbine runner 1, by the lock 2 in the turbine runner 1 deeper than the circumferential groove for the blade root 12 is worked out and the filler 5 is also extended in this area.
  • the filler 5 is on a flank 9 through the fitting 6 to the thus formed paragraph 4 on the turbine rotor 1 and the blade collar, d. H. pressed the blade root 12. While In operation, the blades in the area of the castle can as well in the rest of the circumferential groove on the slightly inclined support flanks 13 on the turbine rotor 1 create and center.
  • the fitting is according to a training with a wedge-shaped Slot 7 provided.
  • the slot 7 tapers towards the bottom portion of the Castle 2, d. H. in the direction of the axis of the turbine rotor 1.
  • On the floor area opposite top of the fitting 6 are recesses, preferably threaded holes 8 introduced (see Fig. 2), which in the slot 7th lead and the execution of tools and the screwing of screws enable.
  • the support flange 3 in the turbine runner 1 is at a slightly larger angle than that Filler 5 inclined to the radial, so that the spread fitting 6 positive fit is attached.
  • the production of the slot 7 in the fitting piece 6 takes place in one operation together with the wedge 10 by wire erosion.
  • Fig. 2 is a view of a lock 2 of a turbine rotor 1 is shown.
  • the location the blade roots 12 of the juxtaposed blades with respect to Castle 2 is indicated.
  • the location of the wedge 10 relative to the threaded holes 8 is outlined.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Hydraulic Turbines (AREA)

Claims (4)

  1. Rotor de turbine muni d'un élément de fermeture permettant de fermer un emplacement de réception d'une rainure périphérique constituant un évidement des deux côtés pour loger une emplanture d'aube (12) mobile du rotor de turbine (1), une pièce de remplissage (5) présentant un contour adapté à l'emplanture d'aube reposant contre un bord de support (3) par l'intermédiaire d'un coussinet de réduction (6) dans le rotor de turbine, caractérisé en ce qu'un accessoire (4) prévu dans la zone du fond de l'élément de fermeture (2) permet le repos axial direct de la pièce de remplissage (5) dans la direction axiale du rotor de turbine.
  2. Rotor de turbine muni d'un élément de fermeture selon la revendication 1, caractérisé en ce que le coussinet de réduction (6) est doté d'une fente (7), dans laquelle une clavette (10) peut être enfoncée pour écarter le coussinet de réduction.
  3. Rotor de turbine selon la revendication 2, caractérisée en ce qu'il est au moins prévu un évidement (8) dans le coussinet de réduction (6), lequel évidement sert à saisir un outil approprié pour enfoncer la clavette (10).
  4. Rotor de turbine selon la revendication 3, caractérisé par la formation du au moins un alésage fileté (8), dans lequel peut être insérée une vis de fixation (11).
EP99108999A 1998-06-17 1999-05-06 Elément de verrouillage pour des aubes de turbine Expired - Lifetime EP0965729B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19826897 1998-06-17
DE19826897A DE19826897A1 (de) 1998-06-17 1998-06-17 Schloß für Laufschaufeln eines Turbinenläufers

Publications (3)

Publication Number Publication Date
EP0965729A2 EP0965729A2 (fr) 1999-12-22
EP0965729A3 EP0965729A3 (fr) 2000-12-27
EP0965729B1 true EP0965729B1 (fr) 2004-01-07

Family

ID=7871109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99108999A Expired - Lifetime EP0965729B1 (fr) 1998-06-17 1999-05-06 Elément de verrouillage pour des aubes de turbine

Country Status (6)

Country Link
US (1) US6135717A (fr)
EP (1) EP0965729B1 (fr)
AT (1) ATE257547T1 (fr)
CZ (1) CZ294271B6 (fr)
DE (2) DE19826897A1 (fr)
PT (1) PT965729E (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080050238A1 (en) * 2006-08-24 2008-02-28 Pratt & Whitney Canada Corp. Disc firtree slot with truncation for blade attachment
DE102008048261B4 (de) 2008-09-22 2017-04-06 Siemens Aktiengesellschaft Axialturbomaschinenrotor mit einem Schaufelschloss und Verfahren zum Herstellen desselben
US8523529B2 (en) * 2009-11-11 2013-09-03 General Electric Company Locking spacer assembly for a circumferential entry airfoil attachment system
US8414268B2 (en) * 2009-11-19 2013-04-09 United Technologies Corporation Rotor with one-sided load and lock slots
FR2996251B1 (fr) 2012-09-28 2018-07-27 Safran Aircraft Engines Attache auto-serrante pour aube de turbine en cmc
US9341071B2 (en) 2013-10-16 2016-05-17 General Electric Company Locking spacer assembly
US9518471B2 (en) 2013-10-16 2016-12-13 General Electric Company Locking spacer assembly
US9512732B2 (en) 2013-10-16 2016-12-06 General Electric Company Locking spacer assembly inserted between rotor blades
US9464531B2 (en) 2013-10-16 2016-10-11 General Electric Company Locking spacer assembly
US9416670B2 (en) 2013-10-16 2016-08-16 General Electric Company Locking spacer assembly
ITMI20132124A1 (it) 2013-12-18 2015-06-19 Franco Tosi Meccanica S P A Stadio rotorico di turbina assiale con tassello di bloccaggio delle radici delle palette
CN106089317B (zh) * 2016-06-08 2017-06-23 哈尔滨汽轮机厂有限责任公司 汽轮机转子齿形叶根末叶锁口件装配方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE490366A (fr) * 1948-09-17
GB704882A (en) * 1951-03-08 1954-03-03 W H Allen Sons & Company Ltd Improvements in and relating to the securing of blading to turbine wheels and other high speed rotary members
US3721506A (en) * 1971-05-25 1973-03-20 Gen Electric Split-nut blade locking assembly
US3801222A (en) * 1972-02-28 1974-04-02 United Aircraft Corp Platform for compressor or fan blade
DE3028701A1 (de) 1980-07-29 1982-02-25 AEG-Kanis Turbinenfabrik GmbH, 8500 Nürnberg Schaufelschloss fuer turbinenbeschaufelung
DE19619317C2 (de) * 1996-05-14 2000-10-05 Voith Hydro Gmbh Laufrad für eine Freistrahltubine

Also Published As

Publication number Publication date
ATE257547T1 (de) 2004-01-15
CZ294271B6 (cs) 2004-11-10
US6135717A (en) 2000-10-24
DE59908226D1 (de) 2004-02-12
CZ216299A3 (cs) 2000-02-16
EP0965729A3 (fr) 2000-12-27
DE19826897A1 (de) 1999-12-23
EP0965729A2 (fr) 1999-12-22
PT965729E (pt) 2004-05-31

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