EP0965729B1 - Schloss für Laufschaufeln eines Turbinenläufers - Google Patents
Schloss für Laufschaufeln eines Turbinenläufers Download PDFInfo
- 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
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
- F01D5/30—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)
Description
- Fig. 1
- einen Schnitt durch ein Schloss eines Turbinenläufers,
- Fig. 2
- eine Sicht auf ein Schloss eines Turbinenläufers.
Claims (4)
- Turbinenläufer mit Schloss zum Schließen einer Einfahrstelle einer beidseitig hinterschnittenen Umfangsnut für die Aufnahme von Schaufelfüßen (12) von Laufschaufeln des Turbinenläufers (1), wobei sich ein Füllstück (5) mit den Schaufelfüßen angepasster Kontur über ein Passstück (6) gegen eine Tragflanke (3) im Turbinenläufer abstützt, gekennzeichnet durch einen im Bodenbereich des Schlosses (2) vorgesehenen Absatz (4) zur direkten axialen Abstützung des Füllstückes (5) in axialer Richtung des Turbinenläufers.
- Turbinenläufer mit Schloss nach Anspruch 1, dadurch gekennzeichnet, dass das Passstück (6) mit einem Schlitz (7) versehen ist, in den ein Keil (10) zur Aufspreizung des Passstückes einpressbar ist.
- Turbinenläufer mit Schloss nach Anspruch 2, dadurch gekennzeichnet, dass mindestens eine Ausnehmung (8) im Passstück (6) vorgesehen ist, die zum Eingriff eines zum Einpressen des Keils (10) geeigneten Werkzeuges dient.
- Turbinenläufer mit Schloss nach Anspruch 3, gekennzeichnet durch eine Ausbildung der mindestens einen Ausnehmung als Gewindebohrung (8), in welche eine Sicherungsschraube (11) eindrehbar ist.
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 (de) | 1999-12-22 |
EP0965729A3 EP0965729A3 (de) | 2000-12-27 |
EP0965729B1 true EP0965729B1 (de) | 2004-01-07 |
Family
ID=7871109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99108999A Expired - Lifetime EP0965729B1 (de) | 1998-06-17 | 1999-05-06 | Schloss für Laufschaufeln eines Turbinenläufers |
Country Status (6)
Country | Link |
---|---|
US (1) | US6135717A (de) |
EP (1) | EP0965729B1 (de) |
AT (1) | ATE257547T1 (de) |
CZ (1) | CZ294271B6 (de) |
DE (2) | DE19826897A1 (de) |
PT (1) | PT965729E (de) |
Families Citing this family (12)
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 |
US9416670B2 (en) | 2013-10-16 | 2016-08-16 | General Electric Company | Locking spacer assembly |
US9518471B2 (en) | 2013-10-16 | 2016-12-13 | General Electric Company | Locking spacer assembly |
US9341071B2 (en) | 2013-10-16 | 2016-05-17 | 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 |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL75780C (de) * | 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 |
-
1998
- 1998-06-17 DE DE19826897A patent/DE19826897A1/de not_active Withdrawn
-
1999
- 1999-05-06 EP EP99108999A patent/EP0965729B1/de not_active Expired - Lifetime
- 1999-05-06 DE DE59908226T patent/DE59908226D1/de not_active Expired - Lifetime
- 1999-05-06 AT AT99108999T patent/ATE257547T1/de active
- 1999-05-06 PT PT99108999T patent/PT965729E/pt unknown
- 1999-06-16 CZ CZ19992162A patent/CZ294271B6/cs not_active IP Right Cessation
- 1999-06-17 US US09/335,367 patent/US6135717A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59908226D1 (de) | 2004-02-12 |
PT965729E (pt) | 2004-05-31 |
US6135717A (en) | 2000-10-24 |
EP0965729A2 (de) | 1999-12-22 |
ATE257547T1 (de) | 2004-01-15 |
CZ294271B6 (cs) | 2004-11-10 |
EP0965729A3 (de) | 2000-12-27 |
DE19826897A1 (de) | 1999-12-23 |
CZ216299A3 (cs) | 2000-02-16 |
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