EP0745756B1 - 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
EP0745756B1
EP0745756B1 EP96810313A EP96810313A EP0745756B1 EP 0745756 B1 EP0745756 B1 EP 0745756B1 EP 96810313 A EP96810313 A EP 96810313A EP 96810313 A EP96810313 A EP 96810313A EP 0745756 B1 EP0745756 B1 EP 0745756B1
Authority
EP
European Patent Office
Prior art keywords
mounting
rotor
blades
axial
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.)
Expired - Lifetime
Application number
EP96810313A
Other languages
German (de)
French (fr)
Other versions
EP0745756A1 (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 Asea Brown Boveri Ltd
Asea Brown Boveri AB
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
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Publication of EP0745756A1 publication Critical patent/EP0745756A1/en
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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 an apparatus and a method for Assembly of blades with essentially axial feet into the corresponding axial grooves of a rotor Fluid machine.
  • Such devices and methods for the assembly of rotor blades with essentially axial feet in the corresponding axial grooves of a rotor of a turbomachine are known see e.g. the document US-A-1 720 729. They are used to assemble blades Row of blades needed, the blades of which, for example. with specifically molded cover bands, platforms or with shovel feet are formed with overlaps. To the last shovel Being able to axially mount a row of blades becomes a special blade needed. These special blades are in theirs Manufacturing very expensive and assembly requires special Effort, or is not always for technical reasons possible. Next is the use of special blades logistically very complex.
  • the invention has for its object in a device for the assembly of blades and the associated procedure the assembly of rotor blades of the type mentioned to simplify with axial feet.
  • this is achieved in that the assembly device from a radially outer headboard with at least one, essentially the axial root of the blade corresponding axial groove and a radially inner Foot part for mounting in a groove running around the rotor consists.
  • the advantages of the invention include that blades with axial feet are inserted radially can be. This allows the blades without Consideration of an axial displacement can be designed. That means that bsw. Cover tapes, platforms or Bucket feet can have any shape.
  • Rotary grooves are already present, for example. to record of heat accumulation segments in the case of gas turbine rotors. These circumferential grooves can then be used to mount the blades be used.
  • blades 1 are blades 1, consisting of a blade root 1A and airfoil 1B, in axial grooves 11a of a rotor 10 used.
  • a platform 3 arranged. At the contact surfaces of this Platforms are sealed using 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.
  • head part 8 is shaped according to the axial groove 11a Axial groove 11b arranged.
  • A is now in the axial groove 11b Blade root 1A of a blade 1 inserted.
  • each the sealing strips 5 are inserted before the blades 1 by means of the mounting device 6 along the circumferential groove 12a are pushed together.
  • the sealing strips 5 not axially after the installation of the blades 1 are inserted into the sealing grooves 4 on the rotor 10 need, they can essentially be shaped arbitrarily his.
  • the whole Blade row R is now, using the axial displacement due to the games between the Platforms 3, piece by piece in the axial grooves 11a of the Rotor pushed. If all blades 1 with their Blade feet 1A inserted in the axial grooves 11a of the rotor are, the mounting devices 6 can not shown filling opening of the circumferential groove 12a of the Rotor can be removed. Now the heat accumulation segments 9 be inserted into the circumferential groove 12a.
  • FIG 5 shows an annular auxiliary device 21 mounted on the rotor become. This is done through a detachable connection, preferably by means of screws 20.
  • the assembly of the Blades 1 then takes place by means of the mounting device 6 exactly the same as described above for the circumferential groove 12a.
  • Fig. 6 and Fig. 7 show an economically particularly advantageous Execution 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. Parts 30 and 31 can be cut out of the flat material, or by punching out or laser cutting. The foot part 30 then only has to still to be reshaped. The two parts of the head part 31 are connected to the foot part 30 via a seam 32.
  • the mounting device 6A is used here for simultaneous and rapid Installation of two blades 1 with inclined axial feet. For this purpose, there are two oblique axial grooves in the mounting device 6A 33 arranged to receive two blade feet.
  • the mounting device can be used anywhere with any axial grooves become.
  • the number of axial grooves per mounting device is essentially arbitrary. It hangs bsw. from the Blade size, blade weight, rotor diameter and the size of the filling opening.
  • the execution of the mounting device is arbitrary, for example. can the foot part from one Solid material can be produced, the head part as in Fig. 6 and 7 from a flat material, or vice versa.

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

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 an apparatus and a method for Assembly of blades with essentially axial feet into the corresponding axial grooves of a rotor Fluid machine.

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 siehe z.B. das Dokument US-A-1 720 729. 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. Such devices and methods for the assembly of rotor blades with essentially axial feet in the corresponding axial grooves of a rotor of a turbomachine are known see e.g. the document US-A-1 720 729. They are used to assemble blades Row of blades needed, the blades of which, for example. with specifically molded cover bands, platforms or with shovel feet are formed with overlaps. To the last shovel Being able to axially mount a row of blades becomes a special blade needed. These special blades are in theirs Manufacturing very expensive and assembly requires special Effort, or is not always for technical reasons possible. Next is the use of special blades 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 in a device for the assembly of blades and the associated procedure the assembly of rotor blades of the type mentioned to simplify with axial feet.

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 assembly device from a radially outer headboard with at least one, essentially the axial root of the blade corresponding axial groove and a radially inner Foot part for mounting in a groove running around the rotor consists.

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 include that blades with axial feet are inserted radially can be. This allows the blades without Consideration of an axial displacement can be designed. That means that bsw. Cover tapes, platforms or Bucket 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 rows of blades with different numbers of blades per row and with different axial feet become.

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 in between the axial grooves Rotary grooves are already present, for example. to record of heat accumulation segments in the case of gas turbine rotors. These circumferential grooves can then be used to mount the blades be used.

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 settlement 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.It is only essential for understanding the invention Elements shown. The arrows indicate the direction of insertion the shovels.

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 11a 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 eingesetzt sind. 1 are blades 1, consisting of a blade root 1A and airfoil 1B, in axial grooves 11a of a rotor 10 used. To protect the rotor 10 from hot gases is between the blade root 1A and the airfoil 1B a platform 3 arranged. At the contact surfaces of this Platforms are sealed using 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 11a einzuführen. Eine zuletzt eingeführte Laufschaufel 2 müsste deshalb bsw. aus zwei Teilen gefertigt werden.After the shaping of the platforms 3 shown in FIG it impossible to axially in all blades 1 of a blade row R insert the axial grooves 11a. A recently introduced Blade 2 would therefore have to be made of two parts become.

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 11a ausgeformte Axialnut 11b angeordnet. In die Axialnut 11b 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 is shaped according to the axial groove 11a Axial groove 11b arranged. A is now in the axial groove 11b Blade root 1A of a blade 1 inserted.

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 11b der Montagevorrichtungen genau vor den Axialnuten 11a 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 11a des Rotors geschoben. Wenn alle Laufschaufeln 1 mit ihren Schaufelfüssen 1A in den Axialnuten 11a 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 shovel 1 inserted radially into a circumferential groove 12a of the rotor 10, why the foot part 7 of the mounting device accordingly the circumferential groove 12a is formed. This is in the circumferential groove 12a a filler opening, not shown is provided, or the foot portion 6 is rotated ninety degrees screwed into the circumferential groove 12a. The circulating Otherwise groove 12a serves to accommodate heat accumulation segments 9 and therefore does not have to be specially manufactured. The heat accumulation segments 9 protect the rotor 10 between the rows of blades R. All blades 1 of a blade row R are now successively with the mounting device 6 radially into the circumferential Groove 12a inserted. In the sealing grooves 4 of the platforms 3 each the sealing strips 5 are inserted before the blades 1 by means of the mounting device 6 along the circumferential groove 12a are pushed together. As a result of that the sealing strips 5 not axially after the installation of the blades 1 are inserted into the sealing grooves 4 on the rotor 10 need, they can essentially be shaped arbitrarily his. By pushing the mounting devices 6 in the circumferential direction and taking advantage of tangential games also in the last radially inserted blade 2 Sealing strips 5 are inserted into the sealing groove. After that the assembly devices shifted in the circumferential direction so that the axial grooves 11b of the mounting devices are accurate come to rest in front of the axial grooves 11a in the rotor. The whole Blade row R is now, using the axial displacement due to the games between the Platforms 3, piece by piece in the axial grooves 11a of the Rotor pushed. If all blades 1 with their Blade feet 1A inserted in the axial grooves 11a of the rotor are, the mounting devices 6 can not shown filling opening of the circumferential groove 12a of the Rotor can be removed. Now the heat accumulation segments 9 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, according to FIG 5 shows an annular auxiliary device 21 mounted on the rotor become. This is done through a detachable connection, preferably by means of screws 20. The auxiliary device 21, consisting of a ring or of several ring parts a circumferential groove 12b, which corresponds to the circumferential Groove 12a in the rotor can be designed. The assembly of the Blades 1 then takes place by means of the mounting device 6 exactly the same 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. Fig. 6 and Fig. 7 show an economically particularly advantageous Execution 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. Parts 30 and 31 can be cut out of the flat material, or by punching out or laser cutting. The foot part 30 then only has to still to be reshaped. The two parts of the head part 31 are connected to the foot part 30 via a seam 32. The mounting device 6A is used here for simultaneous and rapid Installation of two blades 1 with inclined axial feet. For this purpose, there are two oblique axial grooves in the mounting device 6A 33 arranged to receive two blade feet.

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 as shown and described embodiment limited. The mounting device can be used anywhere with any axial grooves become. The number of axial grooves per mounting device is essentially arbitrary. It hangs bsw. from the Blade size, blade weight, rotor diameter and the size of the filling opening. The execution of the mounting device is arbitrary, for example. can the foot part from one Solid material can be produced, the head part as in Fig. 6 and 7 from a flat material, 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)

  1. Device (6) for the mounting of moving blades (1) having essentially axial roots (1A) into the corresponding axial grooves (11a) of a rotor (10) of a turbomachine, characterized in that the mounting device (6) consists of a radially outer head part (8) having at least one axial groove (11b) corresponding essentially to the axial root of the moving blade (1A) and of a radially inner foot part (7) for mounting in a groove (12a, 12b) encircling the rotor (10).
  2. Device for the mounting of moving blades according to Claim 1, characterized in that the mounting device (6) consists essentially of one or more parts (30, 31) connected to one another.
  3. Method for the use of a device for the mounting of moving blades according to Claim 1, characterized in that the moving blades (1) are inserted into the mounting device (6), in that the moving blades (1) of a moving blade row (R) are inserted radially into a peripheral groove (12a, 12b) in succession by means of the mounting devices (6), in that all the moving blades (1) are inserted together with one another into the axial grooves (11a) of the rotor by the mounting device (6), and in that the mounting devices (6) are extracted from the peripheral groove (12a, 12b).
  4. Method according to Claim 3, characterized in that the mounting devices (6) are inserted into a peripheral groove (12a) present on the rotor (10).
  5. Method according to Claim 4, characterized in that an accessory (21) having a peripheral groove (12b) is mounted on the rotor (10), and in that the accessory (21) is removed again after the mounting of the moving blades (1) has taken place.
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 EP0745756A1 (en) 1996-12-04
EP0745756B1 true EP0745756B1 (en) 2000-03-22

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EP96810313A Expired - Lifetime EP0745756B1 (en) 1995-06-02 1996-05-17 Fixture and method for the assembly of runner blades

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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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Also Published As

Publication number Publication date
DE19520274A1 (en) 1996-12-05
US5737816A (en) 1998-04-14
KR970001851A (en) 1997-01-24
CN1144877A (en) 1997-03-12
EP0745756A1 (en) 1996-12-04
CN1087389C (en) 2002-07-10
JPH08326504A (en) 1996-12-10
DE59604723D1 (en) 2000-04-27

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