EP1134359A2 - Blade lock and method to make such a blade lock - Google Patents

Blade lock and method to make such a blade lock Download PDF

Info

Publication number
EP1134359A2
EP1134359A2 EP01103910A EP01103910A EP1134359A2 EP 1134359 A2 EP1134359 A2 EP 1134359A2 EP 01103910 A EP01103910 A EP 01103910A EP 01103910 A EP01103910 A EP 01103910A EP 1134359 A2 EP1134359 A2 EP 1134359A2
Authority
EP
European Patent Office
Prior art keywords
blade
blade groove
wedge
threading point
filler
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
Application number
EP01103910A
Other languages
German (de)
French (fr)
Other versions
EP1134359A3 (en
EP1134359B1 (en
Inventor
Achim Zimmermann
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.)
MAN Energy Solutions SE
Original Assignee
MAN Turbomaschinen AG GHH Borsig
MAN Turbomaschinen AG
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 MAN Turbomaschinen AG GHH Borsig, MAN Turbomaschinen AG filed Critical MAN Turbomaschinen AG GHH Borsig
Publication of EP1134359A2 publication Critical patent/EP1134359A2/en
Publication of EP1134359A3 publication Critical patent/EP1134359A3/en
Application granted granted Critical
Publication of EP1134359B1 publication Critical patent/EP1134359B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S416/00—Fluid reaction surfaces, i.e. impellers
    • Y10S416/50—Vibration damping features
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member

Definitions

  • the invention relates to a blade lock for the blading a turbine of axial design with the features of the generic term of claim 1 and a method for producing a Bucket lock.
  • From DE-OS 30 28 701 is a padlock for one Turbine blading known in which the blades positively in an undercut, in the circumferential direction extending blade groove of the turbine rotor are used.
  • At the Turbine rotor circumference is at least one threading point provided, in which a positive with the blade root Filler is inserted.
  • the filler is through a fitting tightly pressed that between the wall of the threading point and the filler is hammered in. To increase the The fitting piece is slotted in contact pressure, while driving in a wedge into the slot in the threading point is pressed.
  • the press force acts on the well-known bucket lock Fitting piece or the wedge on the blade root and thus on the Turbine rotor itself. This can happen with one driven too tight Wedge to tension and warp the turbine rotor to lead. Warm run behavior can occur during turbine operation of the turbine runner are negatively affected, leading to a Can lead to an increase in wave vibrations.
  • the invention has for its object the generic Shovel lock to be designed so that no pressing force the turbine runner is exercised.
  • the filler is in the designed according to the invention Threading point held in the axial direction such that it is not pressed against the blade root, but at the Wedging in the threading point in the turbine rotor is supported.
  • the clamping force between the filler and the wedge acts thereby no longer on the blade root, and the axial Contact pressure is no longer due to the blade groove passed through.
  • the turbine runner does not experience any axial Bracing.
  • the introduction of the shovel lock cannot a curvature of the turbine rotor during the Manufacturing process. A negative influence of one too tightly fitted padlock on the Warm run behavior of the turbine rotor is excluded.
  • Each Blade of a blade groove including the final blade finds the same blade groove dimensions and clamping conditions in front.
  • the invention is generally applicable for axial turbines Design in overpressure or constant pressure design for steam turbines and process gas or residual gas turbines and in a special way for Shovel locks for shovel feet in hammerhead or Double hammer head construction.
  • a blade groove 2 with an undercut Blade groove contour incised In the turbine runner 1 of an axial type turbine is in Circumferential direction a blade groove 2 with an undercut Blade groove contour incised.
  • rotating blades 3 used which consist of a Airfoil 4 exist, which is a 5 in a blade root 6 merges. Instead of a rhomboid also a rectangle in question.
  • the blade feet 6 engage with one the contour corresponding to the blade groove contour into the blade groove 2 on. This contour is in this embodiment as Double hammer head trained.
  • Threading point 7 is provided, via which the blades 3 into the Blade groove 2 are introduced. After inserting the Scoops 3 become a filler 8 in the threading point 7 used, the one corresponding to the blade groove contour has and with this contour in the blade root 6 of Final blade engages.
  • the filler 8 is in the Threading point 7 wedged by a wedge 9 on which the Blade 3 facing away from the filler 8 in the Threading point 7 is driven.
  • the cross section of the threading point 7 receiving the filler 8 widens conically starting from the blade groove 2.
  • the side walls of the threading point 7 each form an angle ⁇ 1 , ⁇ 2 with the longitudinal axis of the blade 3. This angle results from the angle of the blade rhomboid.
  • the angles can be different from case to case, also among one another in the blade lock.
  • the filler 8 also has two tapered side surfaces adapted to the threading point 7.
  • the wedge 9 resting on the back of the filling piece 8 is so driven far into the threading point 7 that between the Front edge of the wedge 9 and the bottom of the threading point 7 Distance remains.
  • the wedge 9 is by two grub screws 10 secured. These grub screws 10 are in holes screwed in on the contact surface of wedge 9 and wall the threading point 7 are introduced into the turbine rotor 1.
  • the parts forming the blade lock are manufactured in the following way.
  • a later blade groove 2 forming pre-turning groove 2 'is screwed in and the Threading point 7 milled.
  • a Threading point 7 is a Blank 8 'for the filler 8 and a wedge blank 9' inserted and by driving the wedge blank 9 'into the threading point 7 tense.
  • the blank 8 'for the filler 8 is except for the Pre-machined blade groove contour.
  • the wedge blank 9 ' is required an excess length or a tapped hole so that after the Completion of the bucket lock can be pulled again.

Abstract

The turbine blades fit to form-lock in an undercut slot(2) in the rotor(1) and are fixed by a blade locking piece. The locking piece consists of an start point(7) in communication with the slot and in which a filling piece(8), form-locking with the blade root, and a key are fitted. The cross section of the start point accommodating the filling piece widens out conically starting from the blade slot. The cross section of the filling piece matches the cross section of the start point. An Independent claim is included for a procedure for the manufacture of the proposed blade lock.

Description

Die Erfindung betrifft ein Schaufelschloss für die Beschaufelung einer Turbine axialer Bauart mit den Merkmalen des Oberbegriffes des Anspruches 1 sowie ein Verfahren zur Herstellung eines Schaufelschlosses.The invention relates to a blade lock for the blading a turbine of axial design with the features of the generic term of claim 1 and a method for producing a Bucket lock.

Aus der DE-OS 30 28 701 ist ein Schaufelschloss für eine Turbinenbeschaufelung bekannt, bei der die Laufschaufeln formschlüssig in einer hinterschnittenen, in Umfangsrichtung verlaufenden Schaufelnut des Turbinenläufers eingesetzt sind. Am Turbinenläuferumfang ist mindestens eine Einfädelstelle vorgesehen, in die ein mit dem Schaufelfuß formschlüssiges Füllstück eingesetzt ist. Das Füllstück wird durch ein Passstück stramm eingepresst, das zwischen die Wandung der Einfädelstelle und das Füllstück eingeschlagen wird. Zur Erhöhung der Anpresskraft ist das Passstück geschlitzt, wobei beim Eintreiben des Passstückes in die Einfädelstelle ein Keil in die Schlitzung eingepresst wird.From DE-OS 30 28 701 is a padlock for one Turbine blading known in which the blades positively in an undercut, in the circumferential direction extending blade groove of the turbine rotor are used. At the Turbine rotor circumference is at least one threading point provided, in which a positive with the blade root Filler is inserted. The filler is through a fitting tightly pressed that between the wall of the threading point and the filler is hammered in. To increase the The fitting piece is slotted in contact pressure, while driving in a wedge into the slot in the threading point is pressed.

Die Presskraft wirkt bei dem bekannten Schaufelschloss über das Passstück oder den Keil auf den Schaufelfuß und damit auf den Turbinenläufer selbst. Das kann bei einem zu fest eingetriebenen Keil zu einer Verspannung und Verkrümmung des Turbinenläufers führen. Im Betrieb der Turbine kann das Warmrundlaufverhalten des Turbinenläufers negativ beeinflusst werden, was zu einem Anstieg der Wellenschwingungen führen kann.The press force acts on the well-known bucket lock Fitting piece or the wedge on the blade root and thus on the Turbine rotor itself. This can happen with one driven too tight Wedge to tension and warp the turbine rotor to lead. Warm run behavior can occur during turbine operation of the turbine runner are negatively affected, leading to a Can lead to an increase in wave vibrations.

Der Erfindung liegt die Aufgabe zugrunde, das gattungsgemäße Schaufelschloss derart zu gestalten, dass keine Presskraft auf den Turbinenläufer ausgeübt wird. The invention has for its object the generic Shovel lock to be designed so that no pressing force the turbine runner is exercised.

Diese Aufgabe wird bei einem gattungsgemäßen Schaufelschloss erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche. Ein Verfahren zur Herstellung des Schaufelschlosses ist in dem Anspruch 5 angegeben.This task is carried out with a generic blade lock according to the invention by the characterizing features of Claim 1 solved. Advantageous embodiments of the invention are the subject of the subclaims. A procedure for Production of the blade lock is in claim 5 specified.

Das Füllstück ist in der erfindungsgemäß ausgebildeten Einfädelstelle in axialer Richtung derart gehalten, dass es nicht gegen den Schaufelfuß gepresst wird, sondern sich bei der Verkeilung in der Einfädelstelle in dem Turbinenläufer abstützt. Die Verspannkraft zwischen dem Füllstück und dem Keil wirkt dadurch nicht mehr auf den Schaufelfuß, und die axiale Anpresskraft wird nicht mehr durch die Schaufelnut hindurchgeleitet. Der Turbinenläufer erfährt keine axiale Verspannung. Die Einbringung des Schaufelschlosses kann nicht zu einer Verkrümmung des Turbinenläufers während des Fertigungsprozesses führen. Ein negativer Einfluss eines zu stramm eingesetzten Schaufelschlosses auf das Warmrundlaufverhalten des Turbinenläufers scheidet aus. Jede Schaufel einer Schaufelnut einschließlich der Schlussschaufel findet gleiche Schaufelnutabmessungen und Einspannverhältnisse vor.The filler is in the designed according to the invention Threading point held in the axial direction such that it is not pressed against the blade root, but at the Wedging in the threading point in the turbine rotor is supported. The clamping force between the filler and the wedge acts thereby no longer on the blade root, and the axial Contact pressure is no longer due to the blade groove passed through. The turbine runner does not experience any axial Bracing. The introduction of the shovel lock cannot a curvature of the turbine rotor during the Manufacturing process. A negative influence of one too tightly fitted padlock on the Warm run behavior of the turbine rotor is excluded. Each Blade of a blade groove including the final blade finds the same blade groove dimensions and clamping conditions in front.

Die erfindungsgemäße Einspannung des verkeilten Füllstückes in der Einfädelstelle macht eine Herstellung des Schaufelschlosses gemäß Anspruch 5 möglich, bei der die Nutkontur des Füllstückes und der Schaufelnut in einer gemeinsamen Aufspannung erzeugt wird. Daraus ergibt sich eine weitestgehende Passgenauigkeit von Füllstück und Keil.The inventive clamping of the wedged filler in the threading point makes the shovel lock possible according to claim 5, wherein the groove contour of the filler and the blade groove is produced in a common setting becomes. This results in a largely accurate fit of Filler and wedge.

Die Erfindung ist allgemein einsetztbar für Turbinen axialer Bauart in Überdruck- oder Gleichdruckbauweise für Dampfturbinen und Prozessgas- oder Restgasturbinen und in besonderer Weise für Schaufelschlösser für Schaufelfüße in Hammerkopf- oder Doppelhammerkopfbauweise.The invention is generally applicable for axial turbines Design in overpressure or constant pressure design for steam turbines and process gas or residual gas turbines and in a special way for Shovel locks for shovel feet in hammerhead or Double hammer head construction.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher erläutert. Es zeigen:

Fig. 1
in Seitenansicht einen Ausschnitt aus einem Turbinenläufer,
Fig. 2
die Draufsicht auf Fig. 1,
Fig. 3
einen Schnitt durch eine vorbereitete Schaufelnut mit eingelegten Rohlingen und
Fig. 4
die Draufsicht auf Fig. 3.
An embodiment of the invention is shown in the drawing and is explained in more detail below. Show it:
Fig. 1
in side view a section of a turbine runner,
Fig. 2
the top view of Fig. 1,
Fig. 3
a section through a prepared blade groove with inserted blanks and
Fig. 4
the top view of Fig. 3rd

In den Turbinenläufer 1 einer Turbine axialer Bauart ist in Umfangsrichtung eine Schaufelnut 2 mit einer hinterschnittenen Schaufelnutkontur eingeschnitten. In die Schaufelnut 2 sind umlaufend Laufschaufeln 3 eingesetzt, die aus einem Schaufelblatt 4 bestehen, das über ein Schaufelrhomboid 5 in einen Schaufelfuß 6 übergeht. An Stelle eines Rhomboids kommt auch ein Rechteck in Frage. Die Schaufelfüße 6 greifen mit einer der Schaufelnutkontur entsprechenden Kontur in die Schaufelnut 2 ein. Diese Kontur ist in diesem Ausführungsbeispiel als Doppelhammerkopf ausgebildet.In the turbine runner 1 of an axial type turbine is in Circumferential direction a blade groove 2 with an undercut Blade groove contour incised. In the blade groove 2 are rotating blades 3 used, which consist of a Airfoil 4 exist, which is a 5 in a blade root 6 merges. Instead of a rhomboid also a rectangle in question. The blade feet 6 engage with one the contour corresponding to the blade groove contour into the blade groove 2 on. This contour is in this embodiment as Double hammer head trained.

An mindestens einer Stelle ist längs der Schaufelnut 2 eine Einfädelstelle 7 vorgesehen, über die die Schaufeln 3 in die Schaufelnut 2 eingeführt werden. Nach dem Einsetzten der Schaufeln 3 wird in die Einfädelstelle 7 ein Füllstück 8 eingesetzt, das eine der Schaufelnutkontur entsprechende Kontur aufweist und mit dieser Kontur in den Schaufelfuß 6 der Schlussschaufel eingreift. Das Füllstück 8 wird in der Einfädelstelle 7 durch einen Keil 9 verkeilt, der auf der der Schaufel 3 abgewandten Seite des Füllstückes 8 in die Einfädelstelle 7 eingetrieben wird. At least one point along the blade groove 2 is one Threading point 7 is provided, via which the blades 3 into the Blade groove 2 are introduced. After inserting the Scoops 3 become a filler 8 in the threading point 7 used, the one corresponding to the blade groove contour has and with this contour in the blade root 6 of Final blade engages. The filler 8 is in the Threading point 7 wedged by a wedge 9 on which the Blade 3 facing away from the filler 8 in the Threading point 7 is driven.

Der das Füllstück 8 aufnehmende Querschnitt der Einfädelstelle 7 erweitert sich ausgehend von der Schaufelnut 2 konisch. Dabei schließen, wie in Fig. 2 gezeigt ist, die Seitenwände der Einfädelstelle 7 mit der Längsachse der Schaufel 3 jeweils einen Winkel α1, α2 ein. Dieser Winkel ergibt sich aus dem Winkel des Schaufelrhoboids. Die Winkel können von Fall zu Fall unterschiedlich sein, auch untereinander in dem Schaufelschloss. Dementsprechend weist auch das Füllstück 8 zwei konisch zulaufende, der Einfädelstelle 7 angepasste Seitenflächen auf.The cross section of the threading point 7 receiving the filler 8 widens conically starting from the blade groove 2. As shown in FIG. 2, the side walls of the threading point 7 each form an angle α 1 , α 2 with the longitudinal axis of the blade 3. This angle results from the angle of the blade rhomboid. The angles can be different from case to case, also among one another in the blade lock. Accordingly, the filler 8 also has two tapered side surfaces adapted to the threading point 7.

Der an der Rückseite des Füllstückes 8 anliegende Keil 9 ist so weit in die Einfädelstelle 7 eingetrieben, dass zwischen der Vorderkante des Keil 9 und dem Grund der Einfädelstelle 7 ein Abstand bestehen bleibt.The wedge 9 resting on the back of the filling piece 8 is so driven far into the threading point 7 that between the Front edge of the wedge 9 and the bottom of the threading point 7 Distance remains.

Im Einbauzustand ist der Keil 9 durch zwei Madenschrauben 10 gesichert. Diese Madenschrauben 10 sind in Bohrungen eingeschraubt, die an der Kontaktfläche von Keil 9 und Wandung der Einfädelstelle 7 in den Turbinenläufer 1 eingebracht sind.In the installed state, the wedge 9 is by two grub screws 10 secured. These grub screws 10 are in holes screwed in on the contact surface of wedge 9 and wall the threading point 7 are introduced into the turbine rotor 1.

Die Fertigung der das Schaufelschloss bildenden Teile erfolgt auf folgende Weise. In den Turbinenläufer 1 wird eine die spätere Schaufelnut 2 bildende Vordrehnut 2' eingedreht und die Einfädelstelle 7 eingefräst. In die Einfädelstelle 7 wird ein Rohling 8' für das Füllstück 8 und ein Keilrohling 9' eingelegt und durch Eintreiben des Keilrohling 9' in der Einfädelstelle 7 verspannt. Der Rohling 8' für das Füllstück 8 ist bis auf die Schaufelnutkontur vorbearbeitet. Der Keilrohling 9' benötigt eine Überlänge oder eine Gewindebohrung, so dass er nach der Fertigstellung des Schaufelschlosses wieder gezogen werden kann. Nach dem Einsetzen des Rohlings 8' für das Füllstück 8 und des Keilrohlings 9' wird die endgültige Schaufelnutkontur in den Turbinenläufer 1 eingedreht. Dabei wird gleichzeitig die Schaufelnutkontur auch in das Füllstück 8 eingedreht. Nach dem Drehen der Schaufelnutkontur wird das Schaufelschloss durch Ziehen des Keilrohlings 9' und Herausnehmen des fertig bearbeiteten Füllstückes 8 geöffnet, worauf der Turbinenläufer 1 für die Beschaufelung vorbereitet ist. Vor dem Ziehen des Keilrohlings 9' wird durch Anreißen dessen Fertiglänge markiert. Vor dem endgültigen Einsetzen des Keils 9 nach dem Beschaufeln wird der Keil 9 auf sein Fertigmaß gebracht.The parts forming the blade lock are manufactured in the following way. In the turbine runner 1 is a later blade groove 2 forming pre-turning groove 2 'is screwed in and the Threading point 7 milled. In the threading point 7 is a Blank 8 'for the filler 8 and a wedge blank 9' inserted and by driving the wedge blank 9 'into the threading point 7 tense. The blank 8 'for the filler 8 is except for the Pre-machined blade groove contour. The wedge blank 9 'is required an excess length or a tapped hole so that after the Completion of the bucket lock can be pulled again. After inserting the blank 8 'for the filler 8 and the Wedge blanks 9 'is the final blade groove contour in the Turbine rotor 1 turned. At the same time, the Blade groove contour also screwed into the filler 8. After this The blade lock is turned by turning the blade groove contour Pull the wedge blank 9 'and take it out processed filler 8 opened, whereupon the turbine rotor 1 is prepared for blading. Before pulling the Wedge blanks 9 'is marked by marking the finished length. Before the final insertion of the wedge 9 after the blading the wedge 9 is brought to its finished size.

Claims (5)

Schaufelschloss für die Beschaufelung einer Turbine axialer Bauart, wobei die Schaufeln (3) formschlüssig in einer hinterschnittenen Schaufelnut (2) des Turbinenläufers (1) eingesetzt sind, wobei die Schaufelnut (2) mit mindestens einer Einfädelstelle (7) in Verbindung steht und wobei in der Einfädelstelle (7) ein mit dem Schaufelfuß (6) der Schaufeln (3) formschlüssiges Füllstück (8) und ein Keil (9) eingesetzt sind, dadurch gekennzeichnet, dass der das Füllstück (8) aufnehmende Querschnitt der Einfädelstelle (7) sich ausgehend von der Schaufelnut (2) konisch erweitert und dass der Querschnitt des Füllstückes (8) dem Querschnitt der Einfädelstelle (7) angepasst ist.Blade lock for the blading of a turbine of an axial type, the blades (3) being inserted in a form-fitting manner in an undercut blade groove (2) of the turbine rotor (1), the blade groove (2) being connected to at least one threading point (7) and in a threading filler (8) and a wedge (9) are inserted into the threading point (7) with the blade root (6) of the blades (3), characterized in that the cross section of the threading point (7) receiving the filling piece (8) starts out of the blade groove (2) flared and that the cross section of the filler (8) is adapted to the cross section of the threading point (7). Schaufelschloss nach Anspruch 1, dadurch gekennzeichnet, dass die Seitenwände der Einfädelstelle (7) unter einem Winkel zu der Schaufelnut (2) verlaufen.Blade lock according to claim 1, characterized in that the side walls of the threading point (7) run at an angle to the blade groove (2). Schaufelschloss nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Seitenwände der Einfädelstelle (7) mit der Längsachse der Schaufel (3) in axialer Richtung einen Winkel (α1, α2) einschließen.Blade lock according to claim 1 or 2, characterized in that the side walls of the threading point (7) form an angle (α 1 , α 2 ) with the longitudinal axis of the blade (3) in the axial direction. Schaufelschloss nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Keil (9) durch Madenschrauben (10) in dem Turbinenläufer (1) gesichert ist.Bucket lock according to one of claims 1 to 3, characterized in that the wedge (9) is secured by grub screws (10) in the turbine rotor (1). Verfahren zur Herstellung eines Schaufelschlosses nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, dass nach dem Drehen der Schaufelnut (2) das bis auf die Schaufelnutkontur vorgefertige Füllstück (8) in die vorbereitete Einfädelstelle (7) eingesetzt und durch den Keil (9) festgelegt wird, dass die Schaufelnutkontur in die Schaufelnut (2) und gleichzeitig in das Füllstück (8) eingearbeitet wird, dass das Füllstück (8) und der Keil (9) aus der Einfädelstelle (7) herausgenommen werden und dass danach der Turbinenläufer (1) mit-den Schaufeln (3) bestückt wird und die Schaufeln (3) durch das Schaufelschloss in der Schaufelnut (2) gesichert werden.Method for producing a blade lock according to claims 1 to 4, characterized in that after the blade groove (2) has been rotated, the filler piece (8) prefabricated to the blade groove contour is inserted into the prepared threading point (7) and fixed by the wedge (9) that the blade groove contour is worked into the blade groove (2) and at the same time into the filler piece (8), that the filler piece (8) and the wedge (9) are removed from the threading point (7) and that the turbine rotor (1) is then is fitted with the blades (3) and the blades (3) are secured in the blade groove (2) by the blade lock.
EP01103910A 2000-03-14 2001-02-17 Blade lock and method to make such a blade lock Expired - Lifetime EP1134359B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10012381 2000-03-14
DE10012381A DE10012381A1 (en) 2000-03-14 2000-03-14 Bucket lock and method for manufacturing a paddle lock

Publications (3)

Publication Number Publication Date
EP1134359A2 true EP1134359A2 (en) 2001-09-19
EP1134359A3 EP1134359A3 (en) 2003-07-30
EP1134359B1 EP1134359B1 (en) 2005-05-11

Family

ID=7634674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01103910A Expired - Lifetime EP1134359B1 (en) 2000-03-14 2001-02-17 Blade lock and method to make such a blade lock

Country Status (8)

Country Link
US (1) US6431836B2 (en)
EP (1) EP1134359B1 (en)
JP (1) JP4009988B2 (en)
AT (1) ATE295472T1 (en)
CZ (1) CZ297759B6 (en)
DE (2) DE10012381A1 (en)
HU (1) HU225330B1 (en)
PL (1) PL199015B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010031693A1 (en) * 2008-09-22 2010-03-25 Siemens Aktiengesellschaft Axial turbomachine rotor having a blade lock, and method for producing the same
EP2410131A2 (en) 2010-07-12 2012-01-25 MAN Diesel & Turbo SE Rotor of a turbomachine
ITCO20130002A1 (en) * 2013-01-23 2014-07-24 Nuovo Pignone Srl METHOD AND SYSTEM FOR SELF-LOCKING A CLOSING SHOVEL IN A ROTARY MACHINE

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6929453B2 (en) * 2003-12-11 2005-08-16 Siemens Westinghouse Power Corporation Locking spacer assembly for slotted turbine component
EP1707747A1 (en) * 2005-03-18 2006-10-04 Siemens Aktiengesellschaft Blade root fixation device and corresponding mounting method
US7901187B2 (en) * 2006-06-23 2011-03-08 Siemens Energy, Inc. Turbine rotor blade groove entry slot lock structure
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
PL220908B1 (en) 2012-08-09 2016-01-29 Gen Electric Regeneration of the steam turbine blading carrier using a bonding method in the solid state
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
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
ITMI20132124A1 (en) * 2013-12-18 2015-06-19 Franco Tosi Meccanica S P A ROTORIAL STAGE OF AXIAL TURBINE WITH BLOCK LOCKING OF THE ROOTS OF THE BALLS
US20150292540A1 (en) * 2014-04-09 2015-10-15 Natel Energy, Inc. Wedge clamping system for beams

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3028701A1 (en) 1980-07-29 1982-02-25 AEG-Kanis Turbinenfabrik GmbH, 8500 Nürnberg Locking arrangement for turbine rotor blade - has profiled lock segment pressed into blade recess by wedge-expanded spacer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB640532A (en) * 1947-11-26 1950-07-19 British Thomson Houston Co Ltd Improvements in and relating to elastic fluid turbines
US2942842A (en) * 1956-06-13 1960-06-28 Gen Motors Corp Turbine blade lock
US3198485A (en) * 1963-09-26 1965-08-03 Gen Motors Corp Turbine blade lock
CH581783A5 (en) * 1975-01-30 1976-11-15 Bbc Sulzer Turbomaschinen
CA1114301A (en) * 1979-06-27 1981-12-15 Ivor J. Roberts Locking device for blade mounting
JPS59192801A (en) * 1983-04-15 1984-11-01 Hitachi Ltd Easily detachable moving blade fixing method
GB2171150B (en) * 1985-02-12 1989-07-26 Rolls Royce Plc Bladed rotor assembly for a turbomachine
US5074754A (en) * 1990-04-23 1991-12-24 United Technologies Corporation Rotor blade retention system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3028701A1 (en) 1980-07-29 1982-02-25 AEG-Kanis Turbinenfabrik GmbH, 8500 Nürnberg Locking arrangement for turbine rotor blade - has profiled lock segment pressed into blade recess by wedge-expanded spacer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010031693A1 (en) * 2008-09-22 2010-03-25 Siemens Aktiengesellschaft Axial turbomachine rotor having a blade lock, and method for producing the same
EP2410131A2 (en) 2010-07-12 2012-01-25 MAN Diesel & Turbo SE Rotor of a turbomachine
US8974186B2 (en) 2010-07-12 2015-03-10 Man Diesel & Turbo Se Coupling element segments for a rotor of a turbomachine
ITCO20130002A1 (en) * 2013-01-23 2014-07-24 Nuovo Pignone Srl METHOD AND SYSTEM FOR SELF-LOCKING A CLOSING SHOVEL IN A ROTARY MACHINE
WO2014114589A1 (en) * 2013-01-23 2014-07-31 Nuovo Pignone Srl Bucket locking assembly of a turbomachine and securing method
US9422820B2 (en) 2013-01-23 2016-08-23 Nuovo Pignone Srl Method and system for self-locking a closure bucket in a rotary machine

Also Published As

Publication number Publication date
HU225330B1 (en) 2006-09-28
HUP0100686A2 (en) 2002-01-28
DE10012381A1 (en) 2001-09-20
CZ20004854A3 (en) 2001-10-17
PL199015B1 (en) 2008-08-29
EP1134359A3 (en) 2003-07-30
US6431836B2 (en) 2002-08-13
JP4009988B2 (en) 2007-11-21
HU0100686D0 (en) 2001-04-28
US20010022936A1 (en) 2001-09-20
EP1134359B1 (en) 2005-05-11
PL346333A1 (en) 2001-09-24
ATE295472T1 (en) 2005-05-15
HUP0100686A3 (en) 2002-05-28
DE50106157D1 (en) 2005-06-16
JP2001295603A (en) 2001-10-26
CZ297759B6 (en) 2007-03-21

Similar Documents

Publication Publication Date Title
EP1134359A2 (en) Blade lock and method to make such a blade lock
DE69839241T2 (en) Holding device for the production of precision parts
DE2537584C3 (en) Fastening arrangement with a self-calibrating fastening bolt
DE951871C (en) Lock for the impeller blades of centrifugal machines
DE2532537A1 (en) ADJUSTMENT DEVICE FOR COAXIAL MACHINE PARTS
DE2234669A1 (en) NOZZLE ASSEMBLY
DE3031122A1 (en) LOCKING DEVICE
DE112014005399B4 (en) Blind ring assembly for removing vane segments, and method of removing vane segments using the same
DE2031024A1 (en) Cap screw
DE202014007558U1 (en) Drilling tool for modification of a blind hole
DE2643263A1 (en) KEY FOR A CYLINDER LOCK AND METHOD FOR ITS MANUFACTURING
WO2018224638A1 (en) Method for producing a wind turbine rotor blade
DE19826897A1 (en) Lock for blades of a turbine runner
WO2018001708A1 (en) Method for optimizing a natural frequency of a rotor blade, and rotor blade
DE1931051A1 (en) Hydraulic piston-cylinder arrangement
DD236487A5 (en) TOOL AND METHOD FOR DRILLING A REAR STOVE HOLE
DE339565C (en) Formation of tight butt joints between turbine blade heads
DE136796C (en)
DE102007005182B3 (en) Case-hardened drive pins fastening method, involves attaching counter bores extending shearing blades at side into through-holes by laser cuttings, and fastening drive pins by material flow resulting from associated riveted bolts
DE3530450C1 (en) Locking bolt with an axial stop catch
EP1355042A2 (en) Turbine blade
DE552076C (en) Blade lock for axially loaded blades of steam or gas turbines
DE534986C (en) Shovel lock
DE2355631C3 (en) Method of making a thin-walled cooling insert for a hollow, air-cooled turbine blade
DE102011014679B4 (en) ratchet wrench

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MAN TURBOMASCHINEN AG

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MAN TURBOMASCHINEN AG

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20030709

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MAN TURBO AG

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50106157

Country of ref document: DE

Date of ref document: 20050616

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050603

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050811

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050811

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051019

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20060214

BERE Be: lapsed

Owner name: MAN TURBO A.G.

Effective date: 20060228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090219

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20090217

Year of fee payment: 9

Ref country code: GB

Payment date: 20090219

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090223

Year of fee payment: 9

Ref country code: SE

Payment date: 20090216

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090213

Year of fee payment: 9

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100217

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100218