EP0965729A2 - Elément de verrouillage pour des aubes de turbine - Google Patents
Elément de verrouillage pour des aubes de turbine Download PDFInfo
- Publication number
- EP0965729A2 EP0965729A2 EP99108999A EP99108999A EP0965729A2 EP 0965729 A2 EP0965729 A2 EP 0965729A2 EP 99108999 A EP99108999 A EP 99108999A EP 99108999 A EP99108999 A EP 99108999A EP 0965729 A2 EP0965729 A2 EP 0965729A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lock
- turbine rotor
- fitting
- filler
- wedge
- 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
- F01D5/30—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 rotor blades of a turbine rotor according to the preamble of claim 1.
- a lock for turbine blading is known from DE 30 28 701 A1 which the blades in a form-fitting manner on both 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 paddle-shaped filler is used.
- the wall of the entry point in the turbine runner and the flank of the filler facing this executed inclined at an angle to the blade axis.
- the closure between the wall of the entry point and the flank of the filler is done with a tight fitting fitting.
- the well-known lock is particularly suitable for blade root shapes, in which the blade feet completely in the axial direction of the turbine rotor the circumferential groove are supported, for example for hammer head feet. If the complete axial support of the blade root in the circumferential groove is missing - for example with fir tree feet - the shovel foot in the lock area can Dodge installation of the filler piece, so that not in the castle required bias can be produced. Without biasing the Castle association can affect the centrifugal force on the inclined during operation Flank of the lock does not clamp the adapter sufficiently, so that the Detach the fitting from the lock and the lock fails.
- the invention has for its object a lock for blades of a turbine rotor of the type mentioned at the beginning, which is also suitable for moving blades is, in which the blade feet are not completely in the axial direction of the turbine rotor are supported on the circumferential groove.
- the Lock can also be used as shovel feet when using fir tree feet is, the assembly can be carried out in a simple manner. Even with large ones Lock sizes, the press-in forces required during assembly can be applied manually and far below the limit values for the permissible mechanical load of the turbine runner.
- the lock with a slotted Fitting piece ensures that the fitting piece is also in the spread installation position is positioned within the lock in a predetermined manner and, for example never protrude above the filler.
- a section through a lock of a turbine rotor is shown.
- a - B is sketched in Fig. 2.
- Blade base 12 - in the example a fir tree base is shown - using a filler 5 and a fitting 6.
- 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 and the filler 5 is also extended in this area.
- the filler 5 is on a flank 9 through the adapter 6 to the shoulder 4 thus formed on the turbine runner 1 and the shovel collar, d. H. pressed the blade root 12. While The blades in the area of the castle can also be in operation in the remaining circumferential groove on the slightly inclined supporting flanks 13 on the turbine runner 1 create and center.
- the fitting is in accordance with a training with a wedge-shaped Provide slot 7.
- the slot 7 tapers towards the bottom of the Castle 2, d. H. towards the axis of the turbine rotor 1.
- On the floor area opposite top of the fitting 6 are recesses, preferably threaded holes 8 are introduced (see FIG. 2), which are in slot 7 flow and the passage of tools and the screwing in of screws enable.
- the supporting flank 3 in the turbine runner 1 is at a somewhat larger angle than that Filling piece 5 inclined to the radial, so that the spread fitting 6 is positive is attached.
- a wedge 10 initially lies loosely in the slot 7. After inserting the adapter 6 into the lock 2, the wedge 10 is used a suitable tool reaching through the bores 8 in the direction pressed to the bottom area of the wedge lock 2. As a result, the slot 7 and so that the fitting 6 expanded. By screwing in locking screws 11 (caulked setscrews) into the threaded bores 8, the pressed-in wedge 10 fixed in its position.
- the slot 7 in the adapter 6 is preferably produced in one operation together with the wedge 10 by wire EDM.
- FIG. 2 shows a view of a lock 2 of a turbine rotor 1.
- the location of the blade roots 12 of the rotor blades arranged side by side with respect to the Castle 2 is indicated.
- the location of the wedge 10 relative to the threaded bores 8 is outlined.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Hydraulic Turbines (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19826897A DE19826897A1 (de) | 1998-06-17 | 1998-06-17 | Schloß für Laufschaufeln eines Turbinenläufers |
| DE19826897 | 1998-06-17 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0965729A2 true EP0965729A2 (fr) | 1999-12-22 |
| EP0965729A3 EP0965729A3 (fr) | 2000-12-27 |
| EP0965729B1 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089317A (zh) * | 2016-06-08 | 2016-11-09 | 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 |
Families Citing this family (11)
| 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 |
| US9416670B2 (en) | 2013-10-16 | 2016-08-16 | General Electric Company | Locking spacer assembly |
| US9464531B2 (en) | 2013-10-16 | 2016-10-11 | General Electric Company | Locking spacer assembly |
| US9512732B2 (en) | 2013-10-16 | 2016-12-06 | General Electric Company | Locking spacer assembly inserted between rotor blades |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3028701A1 (de) | 1980-07-29 | 1982-02-25 | AEG-Kanis Turbinenfabrik GmbH, 8500 Nürnberg | Schaufelschloss fuer turbinenbeschaufelung |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL75780C (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 |
| 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/fr not_active Expired - Lifetime
- 1999-05-06 AT AT99108999T patent/ATE257547T1/de active
- 1999-05-06 PT PT99108999T patent/PT965729E/pt unknown
- 1999-05-06 DE DE59908226T patent/DE59908226D1/de not_active Expired - Lifetime
- 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
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3028701A1 (de) | 1980-07-29 | 1982-02-25 | AEG-Kanis Turbinenfabrik GmbH, 8500 Nürnberg | Schaufelschloss fuer turbinenbeschaufelung |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089317A (zh) * | 2016-06-08 | 2016-11-09 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CZ294271B6 (cs) | 2004-11-10 |
| PT965729E (pt) | 2004-05-31 |
| EP0965729A3 (fr) | 2000-12-27 |
| DE19826897A1 (de) | 1999-12-23 |
| DE59908226D1 (de) | 2004-02-12 |
| EP0965729B1 (fr) | 2004-01-07 |
| CZ216299A3 (cs) | 2000-02-16 |
| ATE257547T1 (de) | 2004-01-15 |
| US6135717A (en) | 2000-10-24 |
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