CH313027A - Device for securing against axial displacement of blades and spacers of turbo machines - Google Patents
Device for securing against axial displacement of blades and spacers of turbo machinesInfo
- Publication number
- CH313027A CH313027A CH313027DA CH313027A CH 313027 A CH313027 A CH 313027A CH 313027D A CH313027D A CH 313027DA CH 313027 A CH313027 A CH 313027A
- Authority
- CH
- Switzerland
- Prior art keywords
- blades
- axial displacement
- against axial
- rotor
- parts
- Prior art date
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
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/32—Locking, e.g. by final locking blades or keys
- F01D5/326—Locking of axial insertion type blades by other means
-
- 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
-
- 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
- F01D5/3084—Fixing blades to rotors; Blade roots ; Blade spacers the blades being made of ceramics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
Vorrichtung zur Sicherung gegen axiale Verschiebung von Laufschaufeln und Zwischenstücken von Turbomaschinen Die Erfindung betrifft eine Vorrichtung zur Sicherung gegen axiale Verschiebung von Laufschaufeln und Zwischenstücken, welche mit ihren Füssen in- Längsnuten des Läufers einer Turbomaschine eingesetzt sind und in radialer Richtung durch diese Füsse gehalten werden.
erfindungsgemäss wird eine solche Siche rung dadurch erreicht, dass ungefähr in der Mitte der zu sichernden Teile in eine am Um fang des Läufers eingedrehte Nut Siche rungsstücke eingelegt sind, welche in die zu sichernden Teile eingreifen und durch diese Teile selbst in radialer Richtung gehalten werden. Zweckmässig werden diese Siche- i-ungSstüeke T-förmig ausgebildet, wobei sie mit, ihrem schmäleren Teil in entsprechende Nuten der zu sichernden Teile eingreifen.
In der Zeichnung ist als Beispiel eine Ausführungsform der erfindungsgemässen Si cherungsvorrichtung dargestellt.
Fig.1. zeigt einen Querschnitt senkrecht zur Axe durch einen Teil eines Läufers mit durch Tannenbaumfüsse gehaltenen Schaufeln, Fig.2 einen entsprechenden Querschnitt durch einen Läufer mit durch T-förmige Füsse gehaltenen Schaufeln und Fig.3 eine schräge Ansicht eines nach Fig.1 ausgeführten Läuferteils mit nur einer eingesetzten Schaufel.
Gemäss den Fig.1. und 3 sind Schaufeln 1 in Längsnuten 2 eines Läufers 3 eingesetzt, von welchem nur ein Ausschnitt dargestellt ist. Die Schaufeln werden hierbei in diesen Längsnuten durch Tannenbaumfüsse 4 in ra dialer Richtung gehalten.
Am Umfang des Läufers, ungefähr in der Mitte der gegen axiale Verschiebung in den Längsnuten zu sichernden Schaufeln, ist eine Nut 5 eingedreht. In diese Nut sind T-för- mige Sicherungsstücke 6 eingelegt, welche mit ihrem schmäleren Teil in entsprechende Nu ten 7 der Füsse der Schaufeln 1 eingreifen. Die Sicherungsstücke werden dabei durch die Schaufelfüsse selbst sowohl in radialer Rich tung wie auch in Umfangsrichtung festgehal ten.
Bei der Beschaufelung wird hierbei so vor gegangen, dass jeweils nach dem Einführen einer Schaufel das zugehörige Sicherungs stück von der noch freien Seite der Schaufel her eingelegt wird. Einzig die letzte Schaufel bedarf noch einer besonderen Sicherung, wo bei das Sicherungsstück beispielsweise in an sich bekannter Weise durch eine Schraube befestigt werden kann.
Die in der Fig. 2 dargestellte Schaufelung unterscheidet sich von jener nach Fig. 1 da durch, dass T-förmige Schaufelfüsse 41 in ent sprechend geformte Längsnuten 27- des Läu fers 3 eingeführt sind. Die Sicherung der Schaufeln gegen axiale Verschiebung erfolgt dabei in gleicher Weise, wie an Hand der Fig.1 und 3 erläutert wurde. Die gleiche Sieherungsvorrichtung kann auch für allfällig noch zwischen den Schau feln angeordnete, in Längsnuten des Läufers eingesetzte Zwischenstücke verwendet werden.
Device for securing against axial displacement of rotor blades and spacers of turbo machines The invention relates to a device for securing against axial displacement of rotor blades and spacers which are inserted with their feet in longitudinal grooves of the rotor of a turbo machine and are held in the radial direction by these feet.
According to the invention, such a fuse is achieved in that approximately in the middle of the parts to be secured in a groove screwed in at the periphery of the rotor, fuse pieces are inserted which engage in the parts to be secured and are held in the radial direction by these parts. These securing pieces are expediently T-shaped, with their narrower part engaging in corresponding grooves in the parts to be secured.
In the drawing, an embodiment of the inventive safety device is shown as an example.
Fig.1. shows a cross section perpendicular to the axis through part of a rotor with blades held by fir tree feet, FIG. 2 shows a corresponding cross section through a rotor with blades held by T-shaped feet, and FIG. 3 shows an oblique view of a rotor part designed according to FIG an inserted shovel.
According to Fig.1. 1 and 3, blades 1 are inserted into longitudinal grooves 2 of a rotor 3, only a section of which is shown. The blades are held in these longitudinal grooves by Christmas tree feet 4 in ra dialer direction.
A groove 5 is screwed into the circumference of the rotor, approximately in the middle of the blades to be secured against axial displacement in the longitudinal grooves. T-shaped securing pieces 6 are inserted into this groove, which, with their narrower part, engage in corresponding grooves 7 of the feet of the blades 1. The securing pieces are held by the blade roots themselves both in the radial direction and in the circumferential direction.
In the case of blading, the procedure here is that after a blade has been inserted, the associated securing piece is inserted from the side of the blade that is still free. Only the last shovel still requires a special fuse, where in the case of the fuse piece, for example, can be attached in a known manner by a screw.
The blade shown in FIG. 2 differs from that according to FIG. 1 in that T-shaped blade roots 41 are introduced into correspondingly shaped longitudinal grooves 27 of the rotor 3. The blades are secured against axial displacement in the same way as was explained with reference to FIGS. The same security device can also be used for any intermediate pieces that are still arranged between the blades and inserted in the longitudinal grooves of the rotor.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1044828X | 1953-07-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH313027A true CH313027A (en) | 1956-03-15 |
Family
ID=4554532
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH313027D CH313027A (en) | 1953-07-28 | 1953-07-28 | Device for securing against axial displacement of blades and spacers of turbo machines |
CH317345D CH317345A (en) | 1953-07-28 | 1953-11-21 | Device for securing against axial displacement of blades and spacers of turbo machines |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH317345D CH317345A (en) | 1953-07-28 | 1953-11-21 | Device for securing against axial displacement of blades and spacers of turbo machines |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE549780A (en) |
CH (2) | CH313027A (en) |
DE (1) | DE1044828B (en) |
NL (1) | NL99070C (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1032753B (en) * | 1956-10-05 | 1958-06-26 | Maschf Augsburg Nuernberg Ag | Locking of rotor blades of flow machines held in a form-fitting manner in axial grooves of a rotor disk |
US2949278A (en) * | 1956-07-05 | 1960-08-16 | Gen Motors Corp | Turbine blade retention |
US3001760A (en) * | 1959-08-07 | 1961-09-26 | Gen Motors Corp | Turbine blade lock |
US3198485A (en) * | 1963-09-26 | 1965-08-03 | Gen Motors Corp | Turbine blade lock |
US4120607A (en) * | 1976-03-26 | 1978-10-17 | Rolls-Royce Limited | Rotor blade for a gas turbine engine |
US4676723A (en) * | 1986-03-26 | 1987-06-30 | Westinghouse Electric Corp. | Locking system for a turbine side entry blade |
US4767247A (en) * | 1987-02-24 | 1988-08-30 | Westinghouse Electric Corp. | Apparatus and method for preventing relative blade motion in steam turbine |
US4915587A (en) * | 1988-10-24 | 1990-04-10 | Westinghouse Electric Corp. | Apparatus for locking side entry blades into a rotor |
US5720596A (en) * | 1997-01-03 | 1998-02-24 | Westinghouse Electric Corporation | Apparatus and method for locking blades into a rotor |
US5860787A (en) * | 1996-05-17 | 1999-01-19 | Rolls-Royce Plc | Rotor blade axial retention assembly |
DE102010017435B4 (en) * | 2009-06-30 | 2020-12-10 | General Electric Co. | Blade attachment mechanism for a rotary machine and turbine engine |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3086697A (en) * | 1958-05-12 | 1963-04-23 | Ite Circuit Breaker Ltd | Rotor design for aero-dynamic wave machine |
US2994507A (en) * | 1959-01-23 | 1961-08-01 | Westinghouse Electric Corp | Blade locking structure |
US3309058A (en) * | 1965-06-21 | 1967-03-14 | Rolls Royce | Bladed rotor |
US3575522A (en) * | 1968-08-30 | 1971-04-20 | Gen Motors Corp | Turbine cooling |
FR2519692B1 (en) * | 1982-01-14 | 1986-08-22 | Snecma | DEVICE FOR AXIAL LOCKING OF TURBINE BLADES AND COMPRESSORS |
DE102005024932A1 (en) * | 2005-05-31 | 2006-12-07 | Rolls-Royce Deutschland Ltd & Co Kg | Turbinenschaufelaxialsperre |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB725461A (en) * | 1953-04-10 | 1955-03-02 | Parsons C A & Co Ltd | Improvements in and relating to the axial locking of rotor blades for turbines and the like |
-
0
- BE BE549780D patent/BE549780A/xx unknown
- NL NL99070D patent/NL99070C/xx active
-
1953
- 1953-07-28 CH CH313027D patent/CH313027A/en unknown
- 1953-11-21 CH CH317345D patent/CH317345A/en unknown
-
1954
- 1954-06-29 DE DEA20622A patent/DE1044828B/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2949278A (en) * | 1956-07-05 | 1960-08-16 | Gen Motors Corp | Turbine blade retention |
DE1032753B (en) * | 1956-10-05 | 1958-06-26 | Maschf Augsburg Nuernberg Ag | Locking of rotor blades of flow machines held in a form-fitting manner in axial grooves of a rotor disk |
US3001760A (en) * | 1959-08-07 | 1961-09-26 | Gen Motors Corp | Turbine blade lock |
US3198485A (en) * | 1963-09-26 | 1965-08-03 | Gen Motors Corp | Turbine blade lock |
US4120607A (en) * | 1976-03-26 | 1978-10-17 | Rolls-Royce Limited | Rotor blade for a gas turbine engine |
US4676723A (en) * | 1986-03-26 | 1987-06-30 | Westinghouse Electric Corp. | Locking system for a turbine side entry blade |
US4767247A (en) * | 1987-02-24 | 1988-08-30 | Westinghouse Electric Corp. | Apparatus and method for preventing relative blade motion in steam turbine |
US4915587A (en) * | 1988-10-24 | 1990-04-10 | Westinghouse Electric Corp. | Apparatus for locking side entry blades into a rotor |
EP0374387A1 (en) * | 1988-10-24 | 1990-06-27 | Westinghouse Electric Corporation | Locking of side-entry blades |
US5860787A (en) * | 1996-05-17 | 1999-01-19 | Rolls-Royce Plc | Rotor blade axial retention assembly |
US5720596A (en) * | 1997-01-03 | 1998-02-24 | Westinghouse Electric Corporation | Apparatus and method for locking blades into a rotor |
DE102010017435B4 (en) * | 2009-06-30 | 2020-12-10 | General Electric Co. | Blade attachment mechanism for a rotary machine and turbine engine |
Also Published As
Publication number | Publication date |
---|---|
BE549780A (en) | |
CH317345A (en) | 1956-11-15 |
NL99070C (en) | |
DE1044828B (en) | 1958-11-27 |
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