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EP0712995A1 - Bladed rotor - Google Patents

Bladed rotor Download PDF

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Publication number
EP0712995A1
EP0712995A1 EP95810673A EP95810673A EP0712995A1 EP 0712995 A1 EP0712995 A1 EP 0712995A1 EP 95810673 A EP95810673 A EP 95810673A EP 95810673 A EP95810673 A EP 95810673A EP 0712995 A1 EP0712995 A1 EP 0712995A1
Authority
EP
European Patent Office
Prior art keywords
rotor
blade
bolt
groove
blades
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.)
Pending
Application number
EP95810673A
Other languages
German (de)
French (fr)
Inventor
Siegfried Hohmann
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.)
ABB Management AG
Original Assignee
ABB Management 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 ABB Management AG filed Critical ABB Management AG
Publication of EP0712995A1 publication Critical patent/EP0712995A1/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/32Locking, e.g. by final locking blades or keys
    • F01D5/326Locking of axial insertion type blades by other means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2200/00Mathematical features
    • F05D2200/10Basic functions
    • F05D2200/11Sum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00Function
    • F05D2260/30Retaining components in desired mutual position
    • F05D2260/38Retaining components in desired mutual position by a spring, i.e. spring loaded or biased towards a certain position

Definitions

  • the invention relates to a bladed rotor of a turbomachine, in which the rotor blades are fastened with their feet in substantially axially running blade grooves of the rotor.
  • Bladed rotors of this type are known.
  • the blades fastened in the axial grooves are fixed in their axial position.
  • a circumferential, T-shaped groove is provided in the wheel rim at the level of the groove base of the axial grooves, above all for fixing the end stage rotor blade rows.
  • the T-shaped groove is designed in the same way as conventional circumferential blade grooves, but is arranged in the wheel rim rotated by 90 degrees.
  • a T-shaped groove is fitted for each row of blades with curved and oblique axial grooves. Due to the position of the T-groove at the level of the groove base of the blade groove, the T-groove runs through the blade root.
  • L-shaped elements that are curved according to the circumference of the rotor can be inserted.
  • Two L-shaped elements next to each other pushed together to form a T and completely fill the T-shaped groove.
  • the L-shaped elements are segmented over the circumference. The individual segments are at least wider than the blade root and usually cover approximately three blade roots or grooves.
  • the L-shaped elements are pushed into the T-shaped groove in segments one after the other.
  • Narrower L-shaped elements are used as end elements, which can be pushed in together through the opening.
  • a wedge is driven in between these two elements, which is additionally fixed.
  • the invention has for its object to make the axial securing of the blades easier and cheaper in a bladed rotor of the type mentioned.
  • the rotor blades are each axially fixed in the blade groove by at least one movable bolt which is resiliently mounted via a spring-like element and connects the blade root to the blade groove.
  • a rotor 1 is provided with rotor blades 5.
  • the blades 5 consist of an only partially illustrated blade 4 and a blade root 3.
  • the blades are inserted with the blade roots 3 in blade grooves 2 of the rotor 1 which run essentially in the longitudinal direction.
  • the blade root 3 is in the form of a fir tree with a plurality of teeth 11. Accordingly, the blade grooves 2 in the drum rotor 1 are also formed with teeth 20.
  • the blades 5 are accelerated radially outward, being held back by the drum rotor 1 by the fir tree-shaped attachment.
  • the bore 9 lies completely in the axial projection 12 of the blade root 3.
  • the bore 9 is therefore outside that area of the blade root 3 which is loaded when the rotor 1 rotates.
  • the blade root is not weakened by the bore 9.
  • a further bore 13 is made in the axial projection 12 above the bolt 6.
  • the diameter of the bore 13 is smaller than that of the bore 9.
  • the spring 7 and then the bolt 6 are inserted into the bore 8.
  • the bolt 6 can be pressed down so far into the bore 8 that it no longer protrudes beyond the groove base of the blade groove 2.
  • the blades 5 are inserted into the axial blade grooves 2 and pushed over the depressed bolt 6 until the bore 9 is above the bore 8.
  • the bolt 6 is pressed upwards by the spring 7 and penetrates into the bore 9, as a result of which the rotor blade is axially fixed.
  • the spring 7 must of course be designed so that the spring force is at least as large as the sum of the friction of the bolt 6 in the bores 8 and 9 and the weight of the bolt.

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

Abstract

The blade foot (3) has an axial projection (12) extending it in the groove direction (2). The bolt (6) is arranged within the axial projection. In the axial projection, a hole for dismantling the running blades (5) out of the blade grooves of the rotor is arranged. The spring force of the spring-type component (7) is at least as great as the sum of the friction of the bolt in the arbitrarily formed holes (8,9) in the blade foot of the running blade and in the rotor (1), as well as the weight of the bolt.

Description

Technisches GebietTechnical field

Die Erfindung betrifft einen beschaufelten Rotor einer Turbomaschine, bei der die Laufschaufeln mit ihren Füssen in im wesentlichen axial verlaufenden Schaufelnuten des Rotors befestigt sind.The invention relates to a bladed rotor of a turbomachine, in which the rotor blades are fastened with their feet in substantially axially running blade grooves of the rotor.

Stand der TechnikState of the art

Derartige beschaufelte Rotoren sind bekannt. Die in den axialen Nuten befestigten Schaufeln werden in ihrer axialen Position fixiert. Vor allem zur Fixierung der Endstufen-Laufschaufelreihen wird dazu im Radkranz auf der Höhe des Nutgrundes der axialen Nuten eine umlaufende, T-förmige Nut vorgesehen. Die T-förmige Nut ist analog zu üblichen umlaufenden Schaufelnuten ausgestaltet, jedoch um neunzig Grad verdreht im Radkranz angeordnet. Für jede Laufschaufelreihe mit bogenförmigen und schrägen axialen Nuten wird dabei eine T-förmige Nut angebracht. Durch die Lage der T-Nut auf der Höhe des Nutgrundes der Schaufelnut, verläuft die T-Nut durch den Schaufelfuss. Durch die Oeffnung der T-Nut können L-förmige, entsprechend dem Umfang des Rotors gebogene Elemente eingeschoben werden. Jeweils zwei L-förmige Elemente nebeneinander geschoben ergänzen sich zu einem T und füllen die T-förmige Nut vollständig auf. Die L-förmigen Elemente sind über den Umfang segmentiert. Die einzelnen Segmente sind mindestens breiter als der Schaufelfuss ausgelegt und überdecken üblicherweise ungefähr drei Schaufelfüsse, beziehungsweise Nuten. Nach dem Einbau der Schaufeln in den Rotor werden die L-förmigen Elemente segmentweise nacheinander in die T-förmige Nut eingeschoben. Als Abschlusselemente werden schmälere L-förmige Elemente verwendet, die gemeinsam durch die Oeffnung eingeschoben werden können. Zwischen diese beiden Elemente wird als Abschluss ein Keil eingetrieben, der zusätzlich fixiert wird.Bladed rotors of this type are known. The blades fastened in the axial grooves are fixed in their axial position. For this purpose, a circumferential, T-shaped groove is provided in the wheel rim at the level of the groove base of the axial grooves, above all for fixing the end stage rotor blade rows. The T-shaped groove is designed in the same way as conventional circumferential blade grooves, but is arranged in the wheel rim rotated by 90 degrees. A T-shaped groove is fitted for each row of blades with curved and oblique axial grooves. Due to the position of the T-groove at the level of the groove base of the blade groove, the T-groove runs through the blade root. Through the opening of the T-groove, L-shaped elements that are curved according to the circumference of the rotor can be inserted. Two L-shaped elements next to each other pushed together to form a T and completely fill the T-shaped groove. The L-shaped elements are segmented over the circumference. The individual segments are at least wider than the blade root and usually cover approximately three blade roots or grooves. After the blades have been installed in the rotor, the L-shaped elements are pushed into the T-shaped groove in segments one after the other. Narrower L-shaped elements are used as end elements, which can be pushed in together through the opening. A wedge is driven in between these two elements, which is additionally fixed.

Diese Art der Befestigung ist sehr zeitaufwendig bei der Montage und einer eventuellen Demontage der Laufschaufeln. Zudem entstehen bei der Fertigung der Nuten Grate, deren Entfernung sehr kompliziert ist, und es entstehen durch den dadurch benötigten hohen Arbeitsaufwand entsprechend hohe Kosten.This type of attachment is very time-consuming during assembly and eventual disassembly of the blades. In addition, burrs arise during the production of the grooves, the removal of which is very complicated, and correspondingly high costs result from the high workload required as a result.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, bei einem beschaufelten Rotor der eingangs genannten Art die Axialsicherung der Schaufeln einfacher und kostengünstiger zu gestalten.The invention has for its object to make the axial securing of the blades easier and cheaper in a bladed rotor of the type mentioned.

Erfindungsgemäss wird dies dadurch erreicht, dass die Laufschaufeln jeweils durch mindestens einen, über ein federartiges Element federnd gelagerten, beweglichen Bolzen, der den Schaufelfuss mit der Schaufelnut verbindet, axial in der Schaufelnut fixiert sind.According to the invention, this is achieved in that the rotor blades are each axially fixed in the blade groove by at least one movable bolt which is resiliently mounted via a spring-like element and connects the blade root to the blade groove.

Die Vorteile der Erfindung sind unter anderem darin zu sehen, dass durch den beweglichen Bolzen die Schaufeln sehr leicht ein- und ausgebaut werden können.The advantages of the invention can be seen, inter alia, in that the blades can be very easily installed and removed by means of the movable bolt.

Kurze Beschreibung der ZeichnungBrief description of the drawing

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung anhand des Rotors einer Turbomaschine dargestellt. Es zeigen:

Fig. 1
eine Teilansicht des Querschnittes durch einen beschaufelten Trommelrotor;
Fig. 2
einen Teillängsschnitt entsprechend der Linie II aus Fig.1.
In the drawing, an embodiment of the invention is shown using the rotor of a turbomachine. Show it:
Fig. 1
a partial view of the cross section through a bladed drum rotor;
Fig. 2
a partial longitudinal section along the line II of Fig.1.

Es sind nur die für das Verständnis der Erfindung wesentlichen Elemente gezeigt.Only the elements essential for understanding the invention are shown.

Weg zur Ausführung der ErfindungWay of carrying out the invention

Gemäss Fig. 1 ist ein Rotor 1 mit Laufschaufeln 5 versehen. Die Laufschaufeln 5 bestehen aus einem nur teilweise dargestellten Schaufelblatt 4 und einem Schaufelfuss 3. Die Laufschaufeln sind mit den Schaufelfüssen 3 in im wesentlichen in längsrichtung verlaufenden Schaufelnuten 2 des Rotors 1 eingesetzt. Der Schaufelfuss 3 ist tannenbaumförmig mit mehreren Zacken 11 ausgebildet. Entsprechend sind die Schaufelnuten 2 im Trommelrotor 1 ebenso mit Zacken 20 ausgebildet. Wird der Rotor gedreht, werden die Laufschaufeln 5 radial nach aussen beschleunigt, wobei sie vom Trommelrotor 1 durch die tannenbaumförmige Befestigung zurückgehalten werden.
Das Axialsicherungselement, bestehend aus einem Bolzen 6 und einer Feder 7, ist in einer Bohrung 8 in der Fussgrundfläche des Rotors und einer Bohrung 9 in einem axialen Vorsprung 12 des Schaufelfusses 3 untergebracht. Die Bohrungen 8 und 9 sind dabei als Sacklöcher ausgestaltet.
1, a rotor 1 is provided with rotor blades 5. The blades 5 consist of an only partially illustrated blade 4 and a blade root 3. The blades are inserted with the blade roots 3 in blade grooves 2 of the rotor 1 which run essentially in the longitudinal direction. The blade root 3 is in the form of a fir tree with a plurality of teeth 11. Accordingly, the blade grooves 2 in the drum rotor 1 are also formed with teeth 20. Will the Rotated rotor, the blades 5 are accelerated radially outward, being held back by the drum rotor 1 by the fir tree-shaped attachment.
The axial securing element, consisting of a bolt 6 and a spring 7, is accommodated in a bore 8 in the base area of the rotor and a bore 9 in an axial projection 12 of the blade root 3. The holes 8 and 9 are designed as blind holes.

Nach Fig. 2 liegt die Bohrung 9 vollständig im axialen Vorsprung 12 des Schaufelfusses 3. Die Bohrung 9 liegt damit ausserhalb jenes Bereiches des Schaufelfusses 3, der bei Drehung des Rotors 1 belastet wird. Dadurch wird der Schaufelfuss durch die Bohrung 9 nicht geschwächt. Oberhalb des Bolzens 6 ist eine weitere Bohrung 13 im axialen Vorsprung 12 angebracht. Der Durchmesser der Bohrung 13 ist jedoch geringer als derjenige der Bohrung 9.According to FIG. 2, the bore 9 lies completely in the axial projection 12 of the blade root 3. The bore 9 is therefore outside that area of the blade root 3 which is loaded when the rotor 1 rotates. As a result, the blade root is not weakened by the bore 9. A further bore 13 is made in the axial projection 12 above the bolt 6. However, the diameter of the bore 13 is smaller than that of the bore 9.

Zur Montage der Laufschaufel 5 wird in die Bohrung 8 die Feder 7 und danach der Bolzen 6 eingesetzt. Der Bolzen 6 kann so weit in die Bohrung 8 hinuntergedrückt werden, dass er nicht mehr über den Nutgrund der Schaufelnut 2 hinausragt. Nun werden die Schaufeln 5 in die axialen Schaufelnuten 2 eingeführt und über den niedergedrückten Bolzen 6 geschoben, bis sich die Bohrung 9 über der Bohrung 8 befindet. In dieser Position wird der Bolzen 6 durch die Feder 7 nach oben gedrückt, dringt in die Bohrung 9 ein, wodurch die Laufschaufel axial fixiert ist. Die Feder 7 muss natürlich so ausgelegt werden, dass die Federkraft mindestens so gross ist wie die Summe aus der Passreibung des Bolzens 6 in den Bohrungen 8 und 9 sowie des Gewichts des Bolzens.
Zur Demontage der Laufschaufeln 5 kann der Bolzen 6 beispielsweise mittels eines nicht dargestellten Stiftes, der in die Bohrung 13 eingeführt wird, hinuntergedrückt werden. Dadurch wird die Laufschaufel entsichert und kann axial aus der Schaufelnut 2 hinausgeschoben werden.
Selbstverständlich ist die Erfindung nicht auf das gezeigte und beschriebene Ausführungsbeispiel beschränkt. Die Art der Ausformung der axialen Nuten ist beliebig, d.h. es können beispielsweise gebogene oder rhombische axiale Nuten verwendet werden. Die Ausformung des Bolzens sowie der zugehörigen Bohrungen ist beliebig. Wesentlich ist die Beweglichkeit des Bolzens in den Bohrungen, die Auslegung des Bolzens entsprechend den axialen Kräften und eine feste Fixierung der Laufschaufeln in axialer Richtung. Die Bohrung 9 im Schaufelfuss kann beispielsweise auch als Nut ausgeformt werden. Mindestens der Teil des Bolzens, der in die Bohrung 9 hineinragt, kann beispielsweise mit Flächen, die rechtwinklig zur Beanspruchungsrichtung liegen, ausgestaltet werden. Damit wird die Fläche, über die die Kraft übertragen wird, vergrössert. Als Feder kann jedes federartige Element verwendet werden.
To assemble the rotor blade 5, the spring 7 and then the bolt 6 are inserted into the bore 8. The bolt 6 can be pressed down so far into the bore 8 that it no longer protrudes beyond the groove base of the blade groove 2. Now the blades 5 are inserted into the axial blade grooves 2 and pushed over the depressed bolt 6 until the bore 9 is above the bore 8. In this position, the bolt 6 is pressed upwards by the spring 7 and penetrates into the bore 9, as a result of which the rotor blade is axially fixed. The spring 7 must of course be designed so that the spring force is at least as large as the sum of the friction of the bolt 6 in the bores 8 and 9 and the weight of the bolt.
To disassemble the blades 5, the bolt 6 can be pressed down, for example, by means of a pin, not shown, which is inserted into the bore 13. As a result, the rotor blade is unlocked and can be pushed axially out of the blade groove 2.
Of course, the invention is not limited to the exemplary embodiment shown and described. The shape of the axial grooves is arbitrary, ie curved or rhombic axial grooves can be used, for example. The shape of the bolt and the associated bores is arbitrary. What is essential is the mobility of the bolt in the bores, the design of the bolt in accordance with the axial forces and a firm fixation of the rotor blades in the axial direction. The bore 9 in the blade root can also be shaped, for example, as a groove. At least the part of the bolt that protrudes into the bore 9 can be designed, for example, with surfaces that are perpendicular to the direction of stress. This increases the area over which the force is transmitted. Any spring-like element can be used as a spring.

BezugszeichenlisteReference list

11
Rotorrotor
22nd
Schaufelnuten im RotorBlade grooves in the rotor
33rd
SchaufelfussBlade root
44th
SchaufelblattAirfoil
55
LaufschaufelBlade
66
Bolzenbolt
77
Federfeather
88th
Bohrung im RotorHole in the rotor
99
Bohrung im SchaufelfussHole in the blade root
1111
Zacken SchaufelfussJagged blade root
1212th
axialer Vorsprung Schaufelfussaxial projection blade root
1313
Bohrung für DemontageHole for disassembly
2020th
Zacken LängsnutJagged longitudinal groove

Claims (4)

Beschaufelter Rotor (1) einer Turbomaschine, bei der die Laufschaufeln (5) mit ihren Füssen (3) in im wesentlichen axial verlaufenden Schaufelnuten (2) des Rotors befestigt sind, dadurch gekennzeichnet, dass die Laufschaufeln (5) jeweils durch mindestens einen, über ein federartiges Element (7) federnd gelagerten, beweglichen Bolzen (6), der den Schaufelfuss (3) mit der Schaufelnut (2) verbindet, axial in der Schaufelnut fixiert sind. Bladed rotor (1) of a turbomachine, in which the rotor blades (5) are fastened with their feet (3) in essentially axially running blade grooves (2) of the rotor, characterized in that the rotor blades (5) are each axially fixed in the blade groove by at least one movable bolt (6) which is resiliently mounted via a spring-like element (7) and which connects the blade root (3) to the blade groove (2). Beschaufelter Rotor nach Anspruch 1, dadurch gekennzeichnet, dass der Schaufelfuss (3) mit einem den Schaufelfuss in Nutrichtung (2) verlängernden axialen Vorsprung (12) versehen ist, und dass der Bolzen (6) innerhalb des axialen Vorsprungs (12) angeordnet ist. Bladed rotor according to claim 1, characterized in that the blade root (3) is provided with an axial projection (12) that extends the blade root in the groove direction (2), and that the bolt (6) is arranged within the axial projection (12). Beschaufelter Rotor nach Anspruch 1, dadurch gekennzeichnet, dass im axialen Vorsprung (12) eine Bohrung zur Demontage der Laufschaufeln (5) aus den Schaufelnuten des Rotors (2) angeordnet ist. Bladed rotor according to claim 1, characterized in that In the axial projection (12) there is a bore for removing the rotor blades (5) from the blade grooves of the rotor (2). Beschaufelter Rotor nach Anspruch 1, dadurch gekennzeichnet, dass die Federkraft des federartigen Elementes (7) mindestens so gross ist wie die Summe aus der Reibung des Bolzens (6) in den, im wesentlichen beliebig ausgeformten, Bohrungen (8, 9) im Schaufelfuss (3) der Laufschaufel (5) und im Rotor (1), sowie des Gewichts des Bolzens. Bladed rotor according to claim 1, characterized in that the spring force of the spring-like element (7) is at least as large as the sum of the friction of the bolt (6) in the bores (8, 9) of essentially any shape in the blade root (3) of the rotor blade (5) and in the rotor (1), as well as the weight of the bolt.
EP95810673A 1994-11-19 1995-10-30 Bladed rotor Pending EP0712995A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4441233 1994-11-19
DE4441233A DE4441233A1 (en) 1994-11-19 1994-11-19 Bladed rotor

Publications (1)

Publication Number Publication Date
EP0712995A1 true EP0712995A1 (en) 1996-05-22

Family

ID=6533664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810673A Pending EP0712995A1 (en) 1994-11-19 1995-10-30 Bladed rotor

Country Status (4)

Country Link
EP (1) EP0712995A1 (en)
JP (1) JPH08210103A (en)
CN (1) CN1130713A (en)
DE (1) DE4441233A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1764479A1 (en) * 2005-09-15 2007-03-21 ALSTOM Technology Ltd Coupled shroud plates for a row of blades of a turbomachine
WO2007031383A1 (en) * 2005-09-15 2007-03-22 Alstom Technology Ltd Blade of a turbomachine having detachable anchoring for a separate cover plate
WO2007031408A1 (en) * 2005-09-15 2007-03-22 Alstom Technology Ltd Cover strip comprising a detachable anchoring for a row of blades of a turbomachine
EP1860280A1 (en) * 2006-04-07 2007-11-28 Siemens Aktiengesellschaft Locking device of a turbine blade with a locking element
CN100351496C (en) * 2002-10-31 2007-11-28 通用电气公司 Continuous radial loader for steam turbine reaction blade and its method
EP2299060A1 (en) * 2009-09-17 2011-03-23 Siemens Aktiengesellschaft Blade fixation with locking device for turbine blades
EP2562357A1 (en) * 2011-08-24 2013-02-27 General Electric Company Replaceable staking insert assembly and corresponding method
US9995155B2 (en) 2014-10-07 2018-06-12 Rolls-Royce Plc Locking member

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024932A1 (en) * 2005-05-31 2006-12-07 Rolls-Royce Deutschland Ltd & Co Kg Turbinenschaufelaxialsperre
FR2903154B1 (en) * 2006-06-29 2011-10-28 Snecma ROTOR OF TURBOMACHINE AND TURBOMACHINE COMPRISING SUCH A ROTOR
JP5692994B2 (en) * 2009-12-08 2015-04-01 三菱重工業株式会社 Rotor blade fixing structure, rotating machine having the same, and rotor blade attaching / detaching method
US20120087799A1 (en) * 2010-10-12 2012-04-12 General Electric Company Axial retention device for turbine system

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US2847187A (en) * 1955-01-21 1958-08-12 United Aircraft Corp Blade locking means
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DE2850941A1 (en) * 1978-11-24 1980-06-12 Motoren Turbinen Union Gas turbine rotor ceramic blade fixture arrangement - has indentation at slot base in rotor body for location of small weight with spring retention

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Publication number Priority date Publication date Assignee Title
US2846183A (en) * 1952-07-18 1958-08-05 William C Morgan Retaining devices for turbine blades
US2953348A (en) * 1952-12-30 1960-09-20 Gen Motors Corp Blade fastenings
US2847187A (en) * 1955-01-21 1958-08-12 United Aircraft Corp Blade locking means
FR2273155A1 (en) * 1974-05-27 1975-12-26 Bbc Sulzer Turbomaschinen
DE2850941A1 (en) * 1978-11-24 1980-06-12 Motoren Turbinen Union Gas turbine rotor ceramic blade fixture arrangement - has indentation at slot base in rotor body for location of small weight with spring retention

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100351496C (en) * 2002-10-31 2007-11-28 通用电气公司 Continuous radial loader for steam turbine reaction blade and its method
EP1764479A1 (en) * 2005-09-15 2007-03-21 ALSTOM Technology Ltd Coupled shroud plates for a row of blades of a turbomachine
WO2007031383A1 (en) * 2005-09-15 2007-03-22 Alstom Technology Ltd Blade of a turbomachine having detachable anchoring for a separate cover plate
WO2007031408A1 (en) * 2005-09-15 2007-03-22 Alstom Technology Ltd Cover strip comprising a detachable anchoring for a row of blades of a turbomachine
US7874791B2 (en) 2005-09-15 2011-01-25 Alstom Technology Ltd. Turbomachine
EP1860280A1 (en) * 2006-04-07 2007-11-28 Siemens Aktiengesellschaft Locking device of a turbine blade with a locking element
CN102498264A (en) * 2009-09-17 2012-06-13 西门子公司 Blade fastening device with fastening device for a turbine blade
WO2011033063A1 (en) * 2009-09-17 2011-03-24 Siemens Aktiengesellschaft Blade fastening having safety device for turbine blades
EP2299060A1 (en) * 2009-09-17 2011-03-23 Siemens Aktiengesellschaft Blade fixation with locking device for turbine blades
US8956122B2 (en) 2009-09-17 2015-02-17 Siemens Aktiengesellschaft Blade fastening having safety device for turbine blades
CN102498264B (en) * 2009-09-17 2015-02-25 西门子公司 Blade fastening having safety device for turbine blades
EP2562357A1 (en) * 2011-08-24 2013-02-27 General Electric Company Replaceable staking insert assembly and corresponding method
CN102954034A (en) * 2011-08-24 2013-03-06 通用电气公司 Replaceable staking insert assembly and corresponding method
US8992180B2 (en) 2011-08-24 2015-03-31 General Electric Company Replaceable staking insert assembly and method
CN102954034B (en) * 2011-08-24 2016-12-07 通用电气公司 Plug in component and method are determined in changeable type stake
US9995155B2 (en) 2014-10-07 2018-06-12 Rolls-Royce Plc Locking member

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CN1130713A (en) 1996-09-11
DE4441233A1 (en) 1996-05-23
JPH08210103A (en) 1996-08-20

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