EP0745756A1 - Fixture and method for the assembly of runner blades - Google Patents

Fixture and method for the assembly of runner blades Download PDF

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Publication number
EP0745756A1
EP0745756A1 EP96810313A EP96810313A EP0745756A1 EP 0745756 A1 EP0745756 A1 EP 0745756A1 EP 96810313 A EP96810313 A EP 96810313A EP 96810313 A EP96810313 A EP 96810313A EP 0745756 A1 EP0745756 A1 EP 0745756A1
Authority
EP
European Patent Office
Prior art keywords
rotor
blades
axial
assembly
circumferential groove
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
EP96810313A
Other languages
German (de)
French (fr)
Other versions
EP0745756B1 (en
Inventor
Peter Hartmann
Michael Hock
Alfred Krähenbühl
Beat Von Arx
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.)
General Electric Switzerland GmbH
Original Assignee
ABB Management AG
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Filing date
Publication date
Application filed by ABB Management AG filed Critical ABB Management AG
Publication of EP0745756A1 publication Critical patent/EP0745756A1/en
Application granted granted Critical
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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
    • F01D5/12—Blades
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • F01D25/285—Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures
    • 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
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • 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
    • Y10T29/37—Impeller making apparatus
    • 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
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49895—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
    • 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
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53961—Means to assemble or disassemble with work-holder for assembly

Definitions

  • the invention relates to a device and a method for assembling rotor blades with essentially axial feet in the corresponding axial grooves of a rotor of a turbomachine.
  • Devices and methods of this type for mounting rotor blades with essentially axial feet in the corresponding axial grooves of a rotor of a turbomachine are known. They are required for the assembly of blades of a row of blades, the blades of which, for example. with specially shaped cover bands, platforms or with shovel feet with overlaps.
  • a special blade is required. These special blades are very expensive to manufacture and assembly requires special effort, or is not always possible for technical reasons. The use of special blades is logistically very complex.
  • the invention has for its object to simplify the assembly of blades with axial feet in a device for mounting blades and the associated method of the type mentioned.
  • the mounting device consists of a radially outer head part with at least one axial groove, which essentially corresponds to the axial foot of the rotor blade, and a radially inner foot part for mounting in a groove running around the rotor.
  • each row of blades is assembled individually, the row of blades can be designed with different numbers of blades per row and with different axial feet.
  • blades 1, consisting of blade root 1A and blade 1B, are inserted in axial grooves 11a of a rotor 10.
  • a platform 3 is arranged between the blade root 1A and the airfoil 1B. At the contact surfaces of these platforms, sealing takes place via sealing strips 5, which are inserted in sealing grooves 4.
  • FIG. 3 shows a one-piece assembly device 6, consisting of a foot part 7 and a head part 8.
  • a head part 8 In the head part 8 there is an axial groove 11b formed in accordance with the axial groove 11a.
  • a blade root 1A of a moving blade 1 is now inserted into the axial groove 11b.
  • the assembly device 6 together with the blade 1 is inserted radially into a circumferential groove 12a of the rotor 10, for which purpose the foot part 7 of the assembly device is shaped in accordance with the circumferential groove 12a.
  • a filling opening (not shown) is provided in the circumferential groove 12a, or the foot part 6 is screwed into the circumferential groove 12a with a ninety degree rotation.
  • the circumferential groove 12a otherwise serves to receive heat accumulation segments 9 and therefore does not have to be specially manufactured.
  • the heat accumulation segments 9 protect the rotor 10 between the rotor blade rows R. All the rotor blades 1 of a blade row R are now successively inserted radially into the circumferential groove 12a with the mounting device 6.
  • the sealing strips 5 are each inserted into the sealing grooves 4 of the platforms 3 before the blades 1 are pushed together along the circumferential groove 12a by means of the mounting device 6. Because the sealing strips 5 do not have to be inserted axially into the sealing grooves 4 after the blades 1 have been mounted on the rotor 10, they can be of essentially any shape. By pushing the mounting devices 6 in the circumferential direction and taking advantage of the tangential play, the sealing strips 5 can also be inserted into the sealing groove in the last radially inserted blade 2. After that the assembly devices are displaced in the circumferential direction so that the axial grooves 11b of the assembly devices come to lie exactly in front of the axial grooves 11a in the rotor.
  • annular auxiliary device 21 can be mounted on the rotor according to FIG. This is done by a detachable connection, preferably by means of screws 20.
  • the assembly of the rotor blades 1 by means of the assembly device 6 then takes place in exactly the same way as described above for the circumferential groove 12a.
  • FIG. 6 and 7 show an economically particularly advantageous embodiment of a mounting device 6A, consisting of a head part 31 and a foot part 30. It consists of a flat material, e.g. made of sheet metal. The parts 30 and 31 can be cut out of the flat material, for example. by punching out or laser cutting. The foot part 30 then only has to be reshaped. The two parts of the head part 31 are connected to the foot part 30 via a seam 32.
  • the assembly device 6A is used here for the simultaneous and rapid assembly of two moving blades 1 with oblique axial feet. For this purpose, two oblique axial grooves 33 are arranged in the mounting device 6A in order to accommodate two blade roots.
  • the mounting device can be used anywhere with any axial grooves.
  • the number of axial grooves per mounting device is essentially arbitrary. It hangs bsw. from the bucket size, the bucket weight, the rotor diameter and the size of the filling opening.
  • the execution of the assembly device is arbitrary, for example.
  • the foot part can also be made from a solid material, the head part from a flat material as in Figures 6 and 7, or vice versa.

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

Abstract

The tool (6) comprises a radially outer head part (8) with at least one axial groove (11b) corresponding to the axial foot of the blade (1A), and a radially inner foot part (7) for fitting into a circumferential groove (12a,12b) round the rotor (10). The blades (1) are inserted into the device and then radially into the rotor groove. All the blades are pushed together by the device into the axial grooves and then the device is removed from the groove.

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Montage von Laufschaufeln mit im wesentlichen axialen Füssen in die entsprechenden axialen Nuten eines Rotors einer Strömungsmaschine.The invention relates to a device and a method for assembling rotor blades with essentially axial feet in the corresponding axial grooves of a rotor of a turbomachine.

Stand der TechnikState of the art

Derartige Vorrichtungen und Verfahren zur Montage von Laufschaufeln mit im wesentlichen axialen Füssen in die entsprechenden axialen Nuten eines Rotors einer Strömungsmaschine sind bekannt. Sie werden zur Montage von Laufschaufeln einer Schaufelreihe benötigt, deren Laufschaufeln bsw. mit speziell ausgeformten Deckbändern, Plattformen oder mit Schaufelfüssen mit Ueberlappungen ausgeformt sind. Um die letzte Schaufel einer Schaufelreihe axial montieren zu können, wird eine Spezialschaufel benötigt. Diese Spezialschaufeln sind in ihrer Herstellung sehr teuer und die Montage erfordert speziellen Aufwand, oder ist aus technischen Gründen nicht immer möglich. Weiter ist die Verwendung von Spezialschaufeln logistisch sehr aufwendig.Devices and methods of this type for mounting rotor blades with essentially axial feet in the corresponding axial grooves of a rotor of a turbomachine are known. They are required for the assembly of blades of a row of blades, the blades of which, for example. with specially shaped cover bands, platforms or with shovel feet with overlaps. In order to be able to axially mount the last blade of a blade row, a special blade is required. These special blades are very expensive to manufacture and assembly requires special effort, or is not always possible for technical reasons. The use of special blades is logistically very complex.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, bei einer Vorrichtung zur Montage von Laufschaufeln und dem zugehörigen Verfahren der eingangs genannten Art die Montage von Laufschaufeln mit Axialfüssen zu vereinfachen.The invention has for its object to simplify the assembly of blades with axial feet in a device for mounting blades and the associated method of the type mentioned.

Erfindungsgemäss wird dies dadurch erreicht, dass die Montagevorrichtung aus einem radial äusseren Kopfteil mit mindestens einer, im wesentlichen dem axialen Fuss der Laufschaufel entsprechenden, axialen Nut und einem radial inneren Fussteil zur Montage in einer um den Rotor umlaufenden Nut besteht.According to the invention, this is achieved in that the mounting device consists of a radially outer head part with at least one axial groove, which essentially corresponds to the axial foot of the rotor blade, and a radially inner foot part for mounting in a groove running around the rotor.

Die Vorteile der Erfindung sind unter anderem darin zu sehen, dass mit axialen Füssen versehene Laufschaufeln radial eingesetzt werden können. Dadurch können die Laufschaufeln ohne Rücksicht auf eine axiale Verschiebbarkeit ausgestaltet werden. Das bedeutet, dass bsw. Deckbänder, Plattformen oder Schaufelfüsse beliebige Formen aufweisen können.The advantages of the invention can be seen, inter alia, in the fact that rotor blades provided with axial feet can be used radially. As a result, the rotor blades can be designed without regard to axial displaceability. That means that bsw. Shrouds, platforms or shovel feet can have any shape.

Dadurch, dass jede Schaufelreihe einzeln montiert wird, können die Schaufelreihen mit unterschiedlichen Schaufelzahlen pro Reihe und mit unterschiedlichen Axialfüssen ausgeführt werden.Because each row of blades is assembled individually, the row of blades can be designed with different numbers of blades per row and with different axial feet.

Besonders vorteilhaft ist, wenn zwischen den axialen Nuten im Rotor bereits umlaufende Nuten vorhanden sind, bsw. zur Aufnahme von Wärmestausegmenten im Falle von Gasturbinenrotoren. Diese umlaufenden Nuten können dann zur Montage der Laufschaufeln verwendet werden.It is particularly advantageous if there are already circumferential grooves between the axial grooves in the rotor, for example. to accommodate heat accumulation segments in the case of gas turbine rotors. These circumferential grooves can then be used to assemble the blades.

Kurze Beschreibung der ZeichnungBrief description of the drawing

In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung anhand eines Teiles eines Gasturbinenrotors dargestellt. Es zeigen:

Fig. 1
einen Teilquerschnitt durch einen Gasturbinenrotor;
Fig. 2
die teilweise Abwicklung einer Laufschaufelreihe des Gasturbinenrotors beim Teilquerschnitt aus Fig.1;
Fig. 3
eine Montagevorrichtung im Querschnitt;
Fig. 4
einen Teillängsschnitt durch den Gasturbinenrotor;
Fig. 5
einen Teillängsschnitt durch den Gasturbinenrotor mit Hilfseinrichtung für die Montagevorrichtung;
Fig. 6
eine weitere Ausführungsvariante der Montagevorrichtung im Längsschnitt;
Fig. 7
die Montagevorrichtung von Fig.6 im Querschnitt.
In the drawings, an embodiment of the invention is shown using a part of a gas turbine rotor. Show it:
Fig. 1
a partial cross section through a gas turbine rotor;
Fig. 2
the partial development of a row of blades of the gas turbine rotor in the partial cross-section from Figure 1;
Fig. 3
a mounting device in cross section;
Fig. 4
a partial longitudinal section through the gas turbine rotor;
Fig. 5
a partial longitudinal section through the gas turbine rotor with auxiliary device for the mounting device;
Fig. 6
a further embodiment of the mounting device in longitudinal section;
Fig. 7
the mounting device of Figure 6 in cross section.

Es sind nur die für das Verständnis der Erfindung wesentlichen Elemente gezeigt. Die Pfeile bezeichnen die Einschubrichtung der Schaufeln.Only the elements essential for understanding the invention are shown. The arrows indicate the direction of insertion of the blades.

Weg zur Ausführung der ErfindungWay of carrying out the invention

Gemäss Fig. 1 sind Laufschaufeln 1, bestehend aus Schaufelfuss 1A und Schaufelblatt 1B, in Axialnuten lla eines Rotors 10 eingesetzt. Um den Rotor 10 vor heissen Gasen zu schützen ist zwischen dem Schaufelfuss 1A und dem Schaufelblatt 1B eine Plattform 3 angeordnet. An den Berührungsflächen dieser Plattformen erfolgt die Abdichtung über Dichtstreifen 5, welche in Dichtnuten 4 eingesetst sind.1, blades 1, consisting of blade root 1A and blade 1B, are inserted in axial grooves 11a of a rotor 10. In order to protect the rotor 10 from hot gases, a platform 3 is arranged between the blade root 1A and the airfoil 1B. At the contact surfaces of these platforms, sealing takes place via sealing strips 5, which are inserted in sealing grooves 4.

Nach der in Fig.2 gezeigten Ausformung der Plattformen 3 ist es unmöglich, alle Schaufeln 1 einer Schaufelreihe R axial in die Axialnuten lla einzuführen. Eine zuletzt eingeführte Laufschaufel 2 müsste deshalb bsw. aus zwei Teilen gefertigt werden.After the shaping of the platforms 3 shown in FIG. 2, it is impossible to axially insert all the blades 1 of a row of blades R into the axial grooves 11a. A blade 2 introduced last would therefore have to be be made from two parts.

Fig. 3 zeigt eine Montagevorrichtung 6 aus einem Stück, bestehend aus einem Fussteil 7 und einem Kopfteil 8. Im Kopfteil 8 ist eine entsprechend der Axialnut lla ausgeformte Axialnut llb angeordnet. In die Axialnut llb wird nun ein Schaufelfuss 1A einer Laufschaufel 1 eingeschoben.3 shows a one-piece assembly device 6, consisting of a foot part 7 and a head part 8. In the head part 8 there is an axial groove 11b formed in accordance with the axial groove 11a. A blade root 1A of a moving blade 1 is now inserted into the axial groove 11b.

Gemäss Fig.4 wird die Montagevorrichtung 6 mitsamt der Schaufel 1 radial in eine umlaufende Nut 12a des Rotors 10 eingesetzt, wozu der Fussteil 7 der Montagevorrichtung entsprechend der umlaufenden Nut 12a ausgeformt ist. Dazu ist in der umlaufenden Nut 12a eine nicht dargestellte Einfüllöffnung vorgesehen, oder der Fussteil 6 wird mit einer Neunziggraddrehung in die umlaufende Nut 12a eingedreht. Die umlaufende Nut 12a dient sonst zur Aufnahme von Wärmestausegmenten 9 und muss daher nicht speziell gefertigt werden. Die Wärmestausegmente 9 schützen den Rotor 10 zwischen den Laufschaufelreihen R. Alle Laufschaufeln 1 einer Schaufelreihe R werden nun nacheinander mit der Montagevorrichtung 6 radial in die umlaufende Nut 12a eingeführt. In die Dichtnuten 4 der Plattformen 3 werden jeweils die Dichtstreifen 5 eingelegt, bevor die Schaufeln 1 mittels der Montagevorrichtung 6 entlang der umlaufenden Nut 12a zusammengeschoben werden. Dadurch dass die Dichtstreifen 5 nicht axial nach der Montage der Schaufeln 1 auf dem Rotor 10 in die Dichtnuten 4 eingeschoben werden müssen, können sie im wesentlichen beliebig ausgeformt sein. Durch Schieben der Montagevorrichtungen 6 in Umfangsrichtung und unter Ausnützung der tangentialen Spiele können auch bei der zuletzt radial eingesetzten Laufschaufel 2 die Dichtstreifen 5 in die Dichtnut eingelegt werden. Danach werden die Montagevorrichtungen in Umfangrichtung so verschoben, dass jeweils die Axialnuten llb der Montagevorrichtungen genau vor den Axialnuten lla im Rotor zu liegen kommen. Die gesamte Laufschaufelreihe R wird nun, unter Ausnützung der axialen Verschiebbarkeit aufgrund der Spiele zwischen den Plattformen 3, Stück für Stück in die Axialnuten lla des Rotors geschoben. Wenn alle Laufschaufeln 1 mit ihren Schaufelfüssen 1A in den Axialnuten lla des Rotors eingesetzt sind, können die Montagevorrichtungen 6 über die nicht dargestellte Einfüllöffnung der umlaufenden Nut 12a des Rotors entnommen werden. Nun können die Wärmestausegmente 9 in die umlaufende Nut 12a eingesetzt werden.4, the assembly device 6 together with the blade 1 is inserted radially into a circumferential groove 12a of the rotor 10, for which purpose the foot part 7 of the assembly device is shaped in accordance with the circumferential groove 12a. For this purpose, a filling opening (not shown) is provided in the circumferential groove 12a, or the foot part 6 is screwed into the circumferential groove 12a with a ninety degree rotation. The circumferential groove 12a otherwise serves to receive heat accumulation segments 9 and therefore does not have to be specially manufactured. The heat accumulation segments 9 protect the rotor 10 between the rotor blade rows R. All the rotor blades 1 of a blade row R are now successively inserted radially into the circumferential groove 12a with the mounting device 6. The sealing strips 5 are each inserted into the sealing grooves 4 of the platforms 3 before the blades 1 are pushed together along the circumferential groove 12a by means of the mounting device 6. Because the sealing strips 5 do not have to be inserted axially into the sealing grooves 4 after the blades 1 have been mounted on the rotor 10, they can be of essentially any shape. By pushing the mounting devices 6 in the circumferential direction and taking advantage of the tangential play, the sealing strips 5 can also be inserted into the sealing groove in the last radially inserted blade 2. After that the assembly devices are displaced in the circumferential direction so that the axial grooves 11b of the assembly devices come to lie exactly in front of the axial grooves 11a in the rotor. The entire row of moving blades R is now pushed into the axial grooves 11a of the rotor, taking advantage of the axial displaceability due to the play between the platforms 3. When all the blades 1 are inserted with their blade roots 1A into the axial grooves 11a of the rotor, the mounting devices 6 can be removed from the circumferential groove 12a of the rotor via the filler opening (not shown). Now the heat accumulation segments 9 can be inserted into the circumferential groove 12a.

Ist keine umlaufende Nut 12a im Rotor 10 vorhanden, kann gemäss Fig.5 eine ringförmige Hilfseinrichtung 21 am Rotor montiert werden. Dies geschieht durch eine lösbare Verbindung, vorzugsweise mittels Schrauben 20. Die Hilfseinrichtung 21, bestehend aus einem Ring oder aus mehreren Ringteilen, enthält eine umlaufende Nut 12b, welche entsprechend der umlaufenden Nut 12a im Rotor ausgelegt sein kann. Die Montage der Laufschaufeln 1 mittels der Montagevorrichtung 6 erfolgt dann genau gleich wie oben für die umlaufende Nut 12a beschrieben.If there is no circumferential groove 12a in the rotor 10, an annular auxiliary device 21 can be mounted on the rotor according to FIG. This is done by a detachable connection, preferably by means of screws 20. The auxiliary device 21, consisting of a ring or of several ring parts, contains a circumferential groove 12b, which can be designed according to the circumferential groove 12a in the rotor. The assembly of the rotor blades 1 by means of the assembly device 6 then takes place in exactly the same way as described above for the circumferential groove 12a.

Fig.6 und Fig.7 zeigen eine wirtschaftlich besonders vorteilhafte Ausführung einer Montagevorrichtung 6A, bestehend aus einem Kopfteil 31 und einem Fussteil 30. Sie besteht aus einem Flachmaterial, bsw. aus Blech. Die Teile 30 und 31 können aus dem Flachmaterial ausgeschnitten werden, bsw. durch Ausstanzen oder Laserschneiden. Der Fussteil 30 muss dann nur noch umgeformt werden. Die zwei Teile des Kopfteiles 31 werden über eine Naht 32 mit dem Fussteil 30 verbunden. Die Montagevorrichtung 6A dient hier zur gleichzeitigen und raschen Montage von zwei Laufschaufeln 1 mit schrägen Axialfüssen. Dazu sind in der Montagevorrichtung 6A zwei schräge Axialnuten 33 angeordnet, um zwei Laufschaufelfüsse aufzunehmen.6 and 7 show an economically particularly advantageous embodiment of a mounting device 6A, consisting of a head part 31 and a foot part 30. It consists of a flat material, e.g. made of sheet metal. The parts 30 and 31 can be cut out of the flat material, for example. by punching out or laser cutting. The foot part 30 then only has to be reshaped. The two parts of the head part 31 are connected to the foot part 30 via a seam 32. The assembly device 6A is used here for the simultaneous and rapid assembly of two moving blades 1 with oblique axial feet. For this purpose, two oblique axial grooves 33 are arranged in the mounting device 6A in order to accommodate two blade roots.

Selbstverständlich ist die Erfindung nicht auf das gezeigte und beschriebene Ausführungsbeispiel beschränkt. Die Montagevorrichtung kann überall bei beliebigen axialen Nuten verwendet werden. Die Zahl der Axialnuten pro Montagevorrichtung ist im wesentlichen beliebig. Sie hängt bsw. ab von der Schaufelgrösse, dem Schaufelgewicht, dem Rotordurchmesser und der Grösse der Einfüllöffnung. Die Ausführung der Montagevorrichtung ist beliebig, bsw. kann der Fussteil auch aus einem Vollmaterial hergestellt werden, der Kopfteil wie in Fig.6 und 7 aus einem Flachmaterial, oder umgekehrt.Of course, the invention is not limited to the exemplary embodiment shown and described. The mounting device can be used anywhere with any axial grooves. The number of axial grooves per mounting device is essentially arbitrary. It hangs bsw. from the bucket size, the bucket weight, the rotor diameter and the size of the filling opening. The execution of the assembly device is arbitrary, for example. The foot part can also be made from a solid material, the head part from a flat material as in Figures 6 and 7, or vice versa.

BezugszeichenlisteReference list

11
LaufschaufelBlade
1A1A
SchaufelfussBlade root
1B1B
SchaufelblattAirfoil
22nd
zuletzt eingesetzte Laufschaufelmost recently used blade
33rd
Plattformplatform
44th
DichtnutSealing groove
55
DichtstreifenSealing strips
66
MontagevorrichtungMounting device
6A6A
Montagevorrichtung mit zwei axialen NutenMounting device with two axial grooves
77
FussteilFoot part
88th
KopfteilHeadboard
99
WärmestausegmentHeat accumulation segment
1010th
Rotorrotor
11a11a
Axialnut im RotorAxial groove in the rotor
11b11b
Axialnut in MontagevorrichtungAxial groove in assembly device
12a12a
umlaufende Nut im Rotorcircumferential groove in the rotor
12b12b
umlaufende Nut in Hilfseinrichtungcircumferential groove in auxiliary device
2020th
Schraubescrew
2121
HilfseinrichtungAuxiliary device
3030th
FussteilFoot part
3131
KopfteilHeadboard
3232
Nahtseam
3333
schräge Axialnutoblique axial groove
RR
LaufschaufelreiheRow of blades

Claims (5)

Vorrichtung zur Montage (6) von Laufschaufeln (1) mit im wesentlichen axialen Füssen (1A) in die entsprechenden axialen Nuten (lla) eines Rotors (10) einer Strömungsmaschine,
dadurch gekennzeichnet, dass
die Montagevorrichtung (6) aus einem radial äusseren Kopfteil (8) mit mindestens einer, im wesentlichen dem axialen Fuss der Laufschaufel (1A) entsprechenden, axialen Nut (llb) und einem radial inneren Fussteil (7) zur Montage in einer um den Rotor (10) umlaufenden Nut (12a, 12b) besteht.Device for mounting (6) rotor blades (1) with essentially axial feet (1A) in the corresponding axial grooves (lla) of a rotor (10) of a turbomachine,
characterized in that
the assembly device (6) consists of a radially outer head part (8) with at least one axial groove (11b), which essentially corresponds to the axial foot of the rotor blade (1A), and a radially inner foot part (7) for assembly in a around the rotor ( 10) circumferential groove (12a, 12b). Vorrichtung zur Montage von Laufschaufeln nach Anspruch
1, dadurch gekennzeichnet, dass
die Montagevorrichtung (6) im wesentlichen aus einem oder mehreren, miteinander verbundenen Teilen (30, 31) besteht.Device for mounting blades according to claim
1, characterized in that
the assembly device (6) consists essentially of one or more interconnected parts (30, 31). Verfahren zur Verwendung einer Vorrichtung zur Montage von Laufschaufeln nach Anspruch 1, dadurch gekennzeichnet, dass die Lauf schaufeln (1) in die Montagevorrichtung (6) eingesetzt werden, dass nacheinander die Laufschaufeln (1) einer Laufschaufelreihe (R) mittels der Montagevorrichtungen (6) radial in eine umlaufende Nut (12a, 12b) eingesetzt werden, dass alle Laufschaufeln (1) miteinander von der Montagevorrichtung (6) in die axialen Nuten (lla) des Rotors eingeschoben werden, und dass die Montagevorrichtungen (6) aus der umlaufenden Nut (12a, 12b) entnommen werden. Method for using a device for mounting blades according to claim 1, characterized in that the blades (1) are inserted into the assembly device (6), that the blades (1) of a blade row (R) are successively inserted radially into a circumferential groove (12a, 12b) by means of the mounting devices (6), that all rotor blades (1) are pushed together by the mounting device (6) into the axial grooves (lla) of the rotor, and that the assembly devices (6) are removed from the circumferential groove (12a, 12b). Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Montagevorrichtungen (6) in eine am Rotor (10) vorhandene umlaufende Nut (12a) eingesetzt werden.Method according to claim 3, characterized in that the assembly devices (6) are inserted into a circumferential groove (12a) provided on the rotor (10). Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass am Rotor (10) eine Hilfseinrichtung (21) mit einer umlaufenden Nut (12b) montiert wird, und dass nach erfolgter Montage der Laufschaufeln (1) die Hilfseinrichtung (21) wieder entfernt wird.A method according to claim 4, characterized in that an auxiliary device (21) with a circumferential groove (12b) is mounted on the rotor (10), and that the auxiliary device (21) is removed again after the blades (1) have been installed.
EP96810313A 1995-06-02 1996-05-17 Fixture and method for the assembly of runner blades Expired - Lifetime EP0745756B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19520274A DE19520274A1 (en) 1995-06-02 1995-06-02 Device and method for assembling rotor blades
DE19520274 1995-06-02

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EP0745756A1 true EP0745756A1 (en) 1996-12-04
EP0745756B1 EP0745756B1 (en) 2000-03-22

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US (1) US5737816A (en)
EP (1) EP0745756B1 (en)
JP (1) JPH08326504A (en)
KR (1) KR970001851A (en)
CN (1) CN1087389C (en)
DE (2) DE19520274A1 (en)

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EP2354456A3 (en) * 2009-12-30 2011-12-21 General Electric Company Fixture and method for mounting articulated turbine buckets
FR3008448A1 (en) * 2013-07-15 2015-01-16 Snecma REMOVAL DEVICE FOR AUBES
EP3043029A1 (en) * 2015-01-12 2016-07-13 General Electric Company Fixture and method for installing turbine buckets
US10851661B2 (en) 2017-08-01 2020-12-01 General Electric Company Sealing system for a rotary machine and method of assembling same

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DE59906856D1 (en) 1999-02-12 2003-10-09 Alstom Switzerland Ltd Fastening rotor blades of a flow machine
US7353588B2 (en) * 2003-06-20 2008-04-08 General Electric Company Installation tool for assembling a rotor blade of a gas turbine engine fan assembly
DE10346384A1 (en) * 2003-09-29 2005-04-28 Rolls Royce Deutschland Turbine blade ring has blade platform with recess for straight damping element formed in center straight section of side faces, and straight or curved recesses for sealing elements in adjoining straight or curved side face sections
DE102004016174A1 (en) * 2004-03-30 2005-10-20 Alstom Technology Ltd Baden Diaphragm gland for sealing a gap between first and second adjacent components in dynamical-type compressors/turbines has a sealing surface with a curved line
US7975354B2 (en) * 2007-02-08 2011-07-12 United Technologies Corporation Bladed disk assembly method and impact device
DE102007039175A1 (en) * 2007-08-20 2009-07-02 Rolls-Royce Deutschland Ltd & Co Kg Gas turbine blade i.e. compressor blade, has platforms supporting turbine blade and connected with disk, where outer contour of one platform runs parallel to outer contour of turbine blade
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US10883386B2 (en) * 2017-06-21 2021-01-05 Mitsubishi Hitachi Power Systems Americas, Inc. Methods and devices for turbine blade installation alignment
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EP2230385A1 (en) * 2008-01-16 2010-09-22 Mitsubishi Heavy Industries, Ltd. Turbine rotor blade
EP2230385A4 (en) * 2008-01-16 2011-03-16 Mitsubishi Heavy Ind Ltd Turbine rotor blade
EP2354456A3 (en) * 2009-12-30 2011-12-21 General Electric Company Fixture and method for mounting articulated turbine buckets
FR3008448A1 (en) * 2013-07-15 2015-01-16 Snecma REMOVAL DEVICE FOR AUBES
WO2015007979A1 (en) * 2013-07-15 2015-01-22 Snecma Dismantling device for blades and corresponding dismantling method
US10533434B2 (en) 2013-07-15 2020-01-14 Safran Aircraft Engines Dismantling device for blades and corresponding dismantling method
EP3043029A1 (en) * 2015-01-12 2016-07-13 General Electric Company Fixture and method for installing turbine buckets
US10125635B2 (en) 2015-01-12 2018-11-13 General Electric Company Fixture and method for installing turbine buckets
US10851661B2 (en) 2017-08-01 2020-12-01 General Electric Company Sealing system for a rotary machine and method of assembling same

Also Published As

Publication number Publication date
US5737816A (en) 1998-04-14
DE19520274A1 (en) 1996-12-05
CN1144877A (en) 1997-03-12
CN1087389C (en) 2002-07-10
DE59604723D1 (en) 2000-04-27
JPH08326504A (en) 1996-12-10
EP0745756B1 (en) 2000-03-22
KR970001851A (en) 1997-01-24

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