EP3064705B1 - Rotor with a locking plate to prevent a twist lock from spinning off - Google Patents

Rotor with a locking plate to prevent a twist lock from spinning off Download PDF

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Publication number
EP3064705B1
EP3064705B1 EP15157557.8A EP15157557A EP3064705B1 EP 3064705 B1 EP3064705 B1 EP 3064705B1 EP 15157557 A EP15157557 A EP 15157557A EP 3064705 B1 EP3064705 B1 EP 3064705B1
Authority
EP
European Patent Office
Prior art keywords
rotor
ring
securing
recess
bayonet
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.)
Active
Application number
EP15157557.8A
Other languages
German (de)
French (fr)
Other versions
EP3064705A1 (en
Inventor
Kevin KAMPKA
Karsten Kolk
Peter Schröder
Vyacheslav Veitsman
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to EP15157557.8A priority Critical patent/EP3064705B1/en
Priority to US15/550,198 priority patent/US10641096B2/en
Priority to PCT/EP2016/050193 priority patent/WO2016139002A1/en
Priority to CN201690000556.3U priority patent/CN208431036U/en
Publication of EP3064705A1 publication Critical patent/EP3064705A1/en
Application granted granted Critical
Publication of EP3064705B1 publication Critical patent/EP3064705B1/en
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Anticipated expiration legal-status 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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
    • F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
    • 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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means
    • F01D5/081—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades
    • F01D5/082—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades on the side of the rotor disc
    • 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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means
    • F01D5/085—Heating, heat-insulating or cooling means cooling fluid circulating inside the rotor
    • F01D5/087—Heating, heat-insulating or cooling means cooling fluid circulating inside the rotor in the radial passages of the rotor disc
    • 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
    • F01D5/3015—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type with side plates
    • 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
    • F01D5/3069—Fixing blades to rotors; Blade roots ; Blade spacers between two discs or rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/266—Rotors specially for elastic fluids mounting compressor rotors on shafts
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/33—Retaining components in desired mutual position with a bayonet coupling
    • 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
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise

Definitions

  • the present invention relates to a rotor, in particular a gas turbine rotor, having a plurality of rotor holes each having an axial passage opening, which are axially braced over at least one extending through the through holes tie rods and summarized to at least one rotor disk unit, wherein at the outer diameter of the tie rod at least one tie rod comprehensive support ring is present, which is engaged with an associated rotor disk and via which the tie rod is supported on the rotor disk, and wherein at least one securing ring is provided for the axial securing of the at least one support ring.
  • Such rotors which are composed of a plurality of individual rotor disks to form one or more rotor disk groups, are known in the prior art in a variety of configurations.
  • the rotor disks of each rotor disk unit are pressed flat against each other via the tie rod, wherein the pressing force is normally generated by nuts screwed onto the tie rod at the end.
  • Most directly arranged rotor disks are additionally connected to each other via a positive connection and centered.
  • a positive connection can be formed for example via a so-called Hirth toothing.
  • the rotor is exposed to mechanical vibrations whose frequency depends, inter alia, on the freely oscillating length of the tie rod.
  • mechanical vibrations whose frequency depends, inter alia, on the freely oscillating length of the tie rod.
  • With increasing length of a rotor and the free-running length of the tie rod increases, which causes its natural frequency shifts to a lower level near the rotational frequency of the rotor.
  • Such a frequency shift can Inadmissibly high vibration amplitudes entail, which impair the function of the rotor and can lead to damage.
  • the tie rod can be supported on the corresponding rotor disk.
  • the DE 2 643 886 a support ring in the form of a Stülprings before with expanding inner diameter, wherein the Stülpring engages with its free end of larger inner diameter in a provided on the associated rotor disc annular groove and is supported with the smallest inner diameter of the tie rod.
  • the present invention provides a rotor of the type mentioned, which is characterized in that the locking ring is secured by means of a rotational lock on the associated rotor disk and the support ring holds on this, wherein the locking ring secured using a lock plate against loosening is.
  • the support ring is therefore enclosed in the axial direction on the one hand by the rotor disk to which it is connected, and on the other by the securing ring which is fastened to the same rotor disk.
  • a distortion of the locking ring against the support ring on the tie rod is thus not required. Accordingly, the use of a dummy rotor disk can be omitted.
  • the locking plate with the locking ring and the associated rotor disk is engaged. In this way, a simple structure is achieved.
  • the securing ring for receiving the securing plate advantageously has a recess which extends in an L-shaped manner over an outer peripheral surface of the securing ring and an end face of the securing ring facing the associated rotor disk.
  • Such an L-shaped recess can be formed on a retaining ring with little effort - even subsequently - for example by means of milling and allows a fixation of the locking plate on the retaining ring.
  • This recess on the associated rotor disk can also be formed with little effort - even subsequently - for example by means of milling in the rotor disk. Their position also defines a measure of how far the circlip must be rotated relative to the associated rotor disk, in order to ensure the attachment of the circlip to the rotor disk.
  • the locking plate has a Z-shaped configuration and is received in the recess of the securing ring and the recess of the rotor disk.
  • an initially L-shaped locking plate is preferably inserted into an L-shaped recess of the securing ring, then the locking ring is brought into engagement with the associated rotor disk and fastened thereto by means of the rotary lock, whereupon the free leg accessible from the outside of the lock plate is bent into a recess of the rotor disk, resulting in the Z-shaped shape.
  • the twist lock is designed as a bayonet connection.
  • a screw connection as a rotary lock.
  • the circlip distributed along its circumference radially projecting bayonet projections which engage in a provided on the associated rotor disc annular bayonet groove, which is provided with corresponding to the bayonet projections bayonet projection receiving openings, which allow an axial insertion of the bayonet projections in the bayonet groove.
  • the recess of the securing ring divides one of the bayonet projections.
  • This embodiment of the recess of the locking ring ensures that the locking plate can not get out of the recess during rotation of the locking ring during assembly.
  • the recess can share one of the bayonet projections in the middle.
  • the support ring has a widening inner diameter and engages with its free end of larger inner diameter in a provided on the associated rotor disc annular groove.
  • the support ring for example, analogous to that in the DE 26 43 886 revealed be formed Stülpring.
  • the present invention relates to the use of a locking plate for securing a retaining ring, which holds a support ring with a rotor disk in engagement against loosening.
  • FIGS. 1 to 7 show a rotor according to an embodiment of the present invention.
  • the rotor 1 which in the present case forms a gas turbine rotor, comprises a multiplicity of rotor disks 3 each having an axial passage opening 2, a hollow shaft 4 and a tie rod 5 extending through the passage opening 2 and the hollow shaft 4, via which the rotor disks 3 and the hollow shaft 4 are clamped axially in a known manner using end to the tie rod 5 screwed clamping parts 6.
  • the rotor disks 3 are combined to form a compressor-side rotor disk unit 7 and a turbine-side rotor disk unit 8, wherein the hollow shaft 4 is arranged between the two rotor disk units 7 and 8.
  • the mutually facing end faces immediately adjacent rotor disks 3 are each provided with a Hirth not shown in detail, which also results in a positive connection between the adjacent rotor disks 3 and a centering with respect to the central axis M of the rotor 1 due to the tension by the tie rod 5 becomes.
  • blades 9 are arranged on the outer circumference of the respective rotor disks 3 .
  • existing gaps 10 serve to guide a cooling fluid for cooling the rotor disks 3, which is supplied via a formed between the tie rod 5 and the rotor disks 3 and the hollow shaft 4 cooling channel.
  • each support ring 11 has a widening inner diameter, wherein in each case the free end with the larger inner diameter engages in an annular groove 12 provided on the adjacently arranged rotor disk 3.
  • a securing ring 13 is provided, which is fastened in each case to that rotor disk 3 by means of a rotary lock, in which also the associated support ring 11 engages.
  • the securing ring 13 is designed such that it engages around an end face 14 of the associated support ring 11 facing away from the associated rotor disk 3.
  • Each retaining ring 13 is made in one piece of metal.
  • the rotational lock between the locking ring 13 and the rotor disk 3 is formed as a bayonet connection.
  • the securing ring 13 distributed along its circumference radially projecting bayonet projections 15 which engage in a provided on the associated rotor disk 3 annular bayonet 16, which is provided with corresponding to the bayonet projections 15 formed bayonet projection receiving openings 17, the axial insertion of the Allow bayonet projections 15 in the bayonet groove 16.
  • the retaining ring 13 can be pushed axially over the support ring 11, wherein the bayonet projections 15 are inserted into the associated bayonet projection receiving openings 17, whereupon the bayonet projections 15 are axially fixed in the bayonet groove 16 in the context of a rotational movement of the locking ring 13.
  • the locking ring 13 has an L-shaped recess 18 which extends over an outer peripheral surface of the locking ring 13 and one of the associated rotor disk 3 facing end face of the locking ring 13 and a bayonet projection 15 divides the center.
  • a bayonet projection 15 divides the center.
  • At the rotor disk 3 facing away from the end face of the locking ring 13 are radially opposite two receiving openings 19 are provided which can receive corresponding projections 20 of a locking tool 21.
  • a radially extending recess 22 is formed, the width of which corresponds substantially to the width of the recess 18 provided on the securing ring 13.
  • the recess 22 is positioned on the end face of the rotor disk 3 so that it is aligned with the recess 18 of the locking ring 13 when it is in a locking position.
  • a locking plate 23 is provided which prevents the intended assembled state loosening of the locking ring 13 from the locking position.
  • the locking plate 23 has a Z-shaped configuration and is received in the recess 18 of the securing ring 13 and the recess 22 of the rotor disk 3.
  • the width of the securing plate 23 substantially corresponds to the widths of the recess 18 and the recess 22.
  • the securing ring 13 For mounting of the securing ring 13, first the securing ring 13 is slipped over the tie rod 5, so that it surrounds the support ring 11. Then in the preassembled state, first L-shaped locking plate 23 is inserted into the L-shaped recess 18 of the securing ring 13. Subsequently, the securing ring 13 provided with the securing plate 23 is inserted axially into the bayonet groove 16 of the rotor disk 3, wherein the bayonet projections 15 are inserted into the corresponding bayonet projection receiving openings 17.
  • a significant advantage of the securing ring 13 according to the invention is that it is not clamped over the tie rod 5 against the associated support ring 11, which is why support rings 11 can be mounted easily and inexpensively regardless of their position. Retrofitting is possible without much effort. Due to its simple structure, the retaining ring 13 can also be produced inexpensively.
  • the use of a locking plate 23 to secure the locking ring 13 against loosening also offers the advantage that during assembly neither forces on the rotor disk 3 nor on the retaining ring 13 forces are exerted whereby unwanted deformations and / or cracking can be avoided. Also, the arrangement can be dismantled easily, which is for maintenance or repair of advantage.
  • the necessary recesses 18 or recesses 22 can also subsequently be easily introduced into retaining rings 13 and rotor disks 3, so that existing anti-loosening devices can be replaced by an anti-rotation lock according to the invention.

Description

Die vorliegende Erfindung betrifft einen Rotor, insbesondere Gasturbinenläufer, mit mehreren jeweils eine axiale Durchgangsöffnung aufweisenden Rotorscheiben, die über zumindest einen sich durch die Durchgangsöffnungen erstreckenden Zuganker axial verspannt und zu zumindest einer Rotorscheibeneinheit zusammengefasst sind, wobei am Außendurchmesser des Zugankers zumindest ein den Zuganker umfassender Stützring anliegt, der mit einer zugeordneten Rotorscheibe in Eingriff ist und über den sich der Zuganker an der Rotorscheibe abstützt, und wobei zur axialen Sicherung des zumindest einen Stützrings wenigstens ein Sicherungsring vorgesehen ist.The present invention relates to a rotor, in particular a gas turbine rotor, having a plurality of rotor holes each having an axial passage opening, which are axially braced over at least one extending through the through holes tie rods and summarized to at least one rotor disk unit, wherein at the outer diameter of the tie rod at least one tie rod comprehensive support ring is present, which is engaged with an associated rotor disk and via which the tie rod is supported on the rotor disk, and wherein at least one securing ring is provided for the axial securing of the at least one support ring.

Derartige Rotoren, die aus einer Vielzahl einzelner Rotorscheiben unter Bildung einer oder mehrerer Rotorscheibengruppen zusammengesetzt sind, sind im Stand der Technik in unterschiedlichsten Ausgestaltungen bekannt. Die Rotorscheiben jeder Rotorscheibeneinheit werden über den Zuganker flächig aneinander gepresst, wobei die Presskraft normalerweise durch endseitig auf den Zuganker aufgeschraubte Schraubenmuttern erzeugt wird. Meist werden unmittelbar benachbart angeordnete Rotorscheiben zusätzlich über einen Formschluss miteinander verbunden und zentriert. Ein solcher Formschluss kann beispielsweise über eine sogenannte Hirth-Verzahnung gebildet werden.Such rotors, which are composed of a plurality of individual rotor disks to form one or more rotor disk groups, are known in the prior art in a variety of configurations. The rotor disks of each rotor disk unit are pressed flat against each other via the tie rod, wherein the pressing force is normally generated by nuts screwed onto the tie rod at the end. Most directly arranged rotor disks are additionally connected to each other via a positive connection and centered. Such a positive connection can be formed for example via a so-called Hirth toothing.

Während des Betriebs ist der Rotor mechanischen Schwingungen ausgesetzt, deren Frequenz unter anderem von der frei schwingenden Länge des Zugankers abhängig ist. Mit zunehmender Baulänge eines Rotors nimmt auch die freischwingende Länge des Zugankers zu, was dazu führt, dass sich dessen Eigenfrequenz auf ein niedrigeres Niveau nahe der Rotationsfrequenz des Rotors verschiebt. Eine solche Frequenzverschiebung kann unzulässig hohe Schwingungsamplituden nach sich ziehen, welche die Funktion des Rotors beeinträchtigen und zu Schäden führen können.During operation, the rotor is exposed to mechanical vibrations whose frequency depends, inter alia, on the freely oscillating length of the tie rod. With increasing length of a rotor and the free-running length of the tie rod increases, which causes its natural frequency shifts to a lower level near the rotational frequency of the rotor. Such a frequency shift can Inadmissibly high vibration amplitudes entail, which impair the function of the rotor and can lead to damage.

Zur Verringerung der frei schwingenden Länge des Zugankers ist es bereits bekannt, am Außendurchmesser des Zugankers zumindest einen Stützring anzubringen und mit einer der Rotorscheiben zu verbinden. Über einen derartigen Stützring kann sich der Zuganker an der entsprechenden Rotorscheibe abstützen. So schlägt beispielsweise die DE 2 643 886 einen Stützring in Form eines Stülprings mit sich aufweitendem Innendurchmesser vor, wobei der Stülpring mit seinem freien Ende größeren Innendurchmessers in eine an der zugeordneten Rotorscheibe vorgesehene Ringnut greift und sich mit dem kleinsten Innendurchmesser an dem Zuganker abstützt. Während des Betriebs wird aufgrund einer Fliehkraftdehnung der Rotorscheibe das mit der Rotorscheibe verbundene Ende des Stülprings derart aufgeweitet, dass der am Außenumfang des Zugankers anliegende Innendurchmesser des Stülprings endseitig gegen den Zuganker drückt, wodurch eine feste Verspannung zwischen der Rotorscheibe und dem Zuganker und damit die gewünschte Stützwirkung erzielt wird.To reduce the free-swinging length of the tie rod, it is already known to attach at least one support ring on the outer diameter of the tie rod and connect to one of the rotor discs. About such a support ring, the tie rod can be supported on the corresponding rotor disk. For example, the DE 2 643 886 a support ring in the form of a Stülprings before with expanding inner diameter, wherein the Stülpring engages with its free end of larger inner diameter in a provided on the associated rotor disc annular groove and is supported with the smallest inner diameter of the tie rod. During operation, due to a centrifugal expansion of the rotor disk associated with the rotor disk end of the Stülprings is widened so that the voltage applied to the outer circumference of the tie rod inner diameter of the Stülprings presses end against the tie rod, creating a tight tension between the rotor disk and the tie rod and thus the desired Support effect is achieved.

Um zu verhindern, dass sich ein Stützring axial entlang des Außenumfangs des Zugankers verschieben kann, ist es ferner bekannt, den Stützring durch einen zusätzlichen Sicherungsring axial zu sichern. So schlägt die DE 2 643 886 beispielsweise die Verwendung eines hülsenförmigen Sicherungsrings vor, der zwischen dem Stützring und einer weiteren Rotorscheibe eingesetzt und zusammen mit den Rotorscheiben über den Zuganker verspannt wird. Ist eine weitere Rotorscheibe nicht vorhanden, so muss eine Dummy-Rotorscheibe zum Einsatz kommen, um die Sicherungshülse axial neben den Stützring drücken zu können. Die Verwendung einer solchen Dummy-Rotorscheibe geht jedoch mit hohen Kosten einher, was nicht wünschenswert ist.In order to prevent a support ring can move axially along the outer periphery of the tie rod, it is also known to axially secure the support ring by an additional locking ring. So that beats DE 2 643 886 For example, the use of a sleeve-shaped locking ring, which is inserted between the support ring and another rotor disk and clamped together with the rotor disks on the tie rod. If a further rotor disk is not present, a dummy rotor disk must be used in order to be able to press the securing sleeve axially next to the support ring. However, the use of such a dummy rotor disk is associated with high costs, which is not desirable.

Ausgehend von diesem Stand der Technik ist es eine Aufgabe der vorliegenden Erfindung, einen kostengünstigen Rotor der eingangs genannten Art mit einem alternativen Aufbau zu schaffen.Based on this prior art, it is an object of the present invention to provide a low-cost rotor of the type mentioned above with an alternative structure.

Zur Lösung dieser Aufgabe schafft die vorliegende Erfindung einen Rotor der eingangs genannten Art, der dadurch gekennzeichnet ist, dass der Sicherungsring mittels einer Drehverriegelung an der zugeordneten Rotorscheibe befestigt ist und den Stützring an dieser hält, wobei der Sicherungsring unter Verwendung eines Sicherungsbleches gegen ein Losdrehen gesichert ist. Erfindungsgemäß wird der Stützring also in axialer Richtung einerseits von der Rotorscheibe, mit der er verbunden ist, und andererseits von dem Sicherungsring eingefasst, der an derselben Rotorscheibe befestigt ist. Ein Verspannen des Sicherungsrings gegen den Stützring über den Zuganker ist somit nicht erforderlich. Entsprechend kann der Einsatz einer Dummy-Rotorscheibe entfallen. Die Befestigung des Sicherungsrings an der Rotorscheibe erfolgt mittels einer Drehverriegelung, die durch ein Sicherungsblech gegen ein Losdrehen gesichert ist, was zu einem einfachen und preiswerten Aufbau des Rotors führt.To achieve this object, the present invention provides a rotor of the type mentioned, which is characterized in that the locking ring is secured by means of a rotational lock on the associated rotor disk and the support ring holds on this, wherein the locking ring secured using a lock plate against loosening is. According to the invention, the support ring is therefore enclosed in the axial direction on the one hand by the rotor disk to which it is connected, and on the other by the securing ring which is fastened to the same rotor disk. A distortion of the locking ring against the support ring on the tie rod is thus not required. Accordingly, the use of a dummy rotor disk can be omitted. The attachment of the locking ring on the rotor disk by means of a rotary lock, which is secured by a locking plate against loosening, resulting in a simple and inexpensive construction of the rotor.

Gemäß einer Ausgestaltung der vorliegenden Erfindung ist das Sicherungsblech mit dem Sicherungsring und der zugeordneten Rotorscheibe in Eingriff. Auf diese Weise wird ein einfacher Aufbau erreicht.According to one embodiment of the present invention, the locking plate with the locking ring and the associated rotor disk is engaged. In this way, a simple structure is achieved.

Bei einem erfindungsgemäßen Rotor weist der Sicherungsring zum Aufnehmen des Sicherungsbleches vorteilhaft eine Ausnehmung aufweisen, die sich L-förmig über eine äußere Umfangsfläche des Sicherungsrings und eine der zugeordneten Rotorscheibe zugewandte Stirnfläche des Sicherungsrings erstreckt. Eine solche L-förmige Ausnehmung lässt sich an einem Sicherungsring mit geringem Aufwand - auch nachträglich - beispielsweise mittels Fräsen ausbilden und ermöglicht eine Fixierung des Sicherungsbleches an dem Sicherungsring. Bevorzugt weist die dem Sicherungsring zugeordnete Rotorscheibe an einer äußeren Stirnseite eine sich radial erstreckende Aussparung zum Aufnehmen des Sicherungsbleches auf, die derart positioniert ist, dass sie mit der Ausnehmung des Sicherungsrings fluchtet, wenn dieser sich in einer Verriegelungsposition befindet. Diese Aussparung an der zugeordneten Rotorscheibe kann ebenfalls mit geringem Aufwand - auch nachträglich - beispielsweise mittels Fräsen in der Rotorscheibe ausgebildet werden. Ihre Position definiert zugleich ein Maß, wie weit der Sicherungsring gegenüber der zugeordneten Rotorscheibe verdreht werden muss, um die Befestigung des Sicherungsrings an der Rotorscheibe zu gewährleisten.In a rotor according to the invention, the securing ring for receiving the securing plate advantageously has a recess which extends in an L-shaped manner over an outer peripheral surface of the securing ring and an end face of the securing ring facing the associated rotor disk. Such an L-shaped recess can be formed on a retaining ring with little effort - even subsequently - for example by means of milling and allows a fixation of the locking plate on the retaining ring. Preferably, the rotor disc associated with the retaining ring on an outer end face on a radially extending recess for receiving the locking plate, which is positioned so that it is aligned with the recess of the locking ring when it is in a locking position. This recess on the associated rotor disk can also be formed with little effort - even subsequently - for example by means of milling in the rotor disk. Their position also defines a measure of how far the circlip must be rotated relative to the associated rotor disk, in order to ensure the attachment of the circlip to the rotor disk.

Gemäß einer weiteren Ausgestaltung des erfindungsgemäßen Rotors besitzt das Sicherungsblech eine Z-förmige Gestalt und ist in der Ausnehmung des Sicherungsrings und der Aussparung der Rotorscheibe aufgenommen. Zum Erreichen der Z-förmigen Gestalt wird bevorzugt ein zunächst L-förmiges Sicherungsblech in eine L-förmige Ausnehmung des Sicherungsrings eingesetzt, anschließend der Sicherungsring mit der zugeordneten Rotorscheibe in Eingriff gebracht und mittels der Drehverriegelung an dieser befestigt, woraufhin der von außen zugängliche freie Schenkel des Sicherungsbleches in eine Aussparung der Rotorscheibe gebogen wird, wodurch sich die Z-förmige Gestalt ergibt.According to a further embodiment of the rotor according to the invention, the locking plate has a Z-shaped configuration and is received in the recess of the securing ring and the recess of the rotor disk. To achieve the Z-shaped configuration, an initially L-shaped locking plate is preferably inserted into an L-shaped recess of the securing ring, then the locking ring is brought into engagement with the associated rotor disk and fastened thereto by means of the rotary lock, whereupon the free leg accessible from the outside of the lock plate is bent into a recess of the rotor disk, resulting in the Z-shaped shape.

Vorteilhaft ist die Drehverriegelung als Bajonettverbindung ausgebildet. Alternativ kann aber auch beispielsweise eine Schraubverbindung als Drehverriegelung dienen.Advantageously, the twist lock is designed as a bayonet connection. Alternatively, however, it is also possible, for example, to use a screw connection as a rotary lock.

Bei einer Bajonettverbindung weist der Sicherungsring entlang seines Umfangs verteilt radial vorstehende Bajonettvorsprünge auf, die in eine an der zugeordneten Rotorscheibe vorgesehene ringförmige Bajonettnut greifen, die mit korrespondierend zu den Bajonettvorsprüngen ausgebildeten Bajonettvorsprungaufnahmeöffnungen versehen ist, die ein axiales Einsetzen der Bajonettvorsprünge in die Bajonettnut ermöglichen.In a bayonet connection, the circlip distributed along its circumference radially projecting bayonet projections which engage in a provided on the associated rotor disc annular bayonet groove, which is provided with corresponding to the bayonet projections bayonet projection receiving openings, which allow an axial insertion of the bayonet projections in the bayonet groove.

Gemäß einer Ausgestaltung des erfindungsgemäßen Rotors teilt die Ausnehmung des Sicherungsrings einen der Bajonettvorsprünge. Diese Ausgestaltung der Ausnehmung des Sicherungsrings stellt sicher, dass das Sicherungsblech bei einem Drehen des Sicherungsrings während der Montage nicht aus der Ausnehmung hinausgelangen kann. Insbesondere kann die Ausnehmung einen der Bajonettvorsprünge mittig teilen.According to one embodiment of the rotor according to the invention, the recess of the securing ring divides one of the bayonet projections. This embodiment of the recess of the locking ring ensures that the locking plate can not get out of the recess during rotation of the locking ring during assembly. In particular, the recess can share one of the bayonet projections in the middle.

Gemäß einer weiteren erfindungsgemäßen Ausgestaltung weist der Stützring einen sich aufweitenden Innendurchmesser auf und greift mit seinem freien Ende größeren Innendurchmessers in eine an der zugeordneten Rotorscheibe vorgesehene Ringnut. So kann der Stützring beispielsweise analog zu dem in der DE 26 43 886 offenbarten Stülpring ausgebildet sein.According to a further embodiment of the invention, the support ring has a widening inner diameter and engages with its free end of larger inner diameter in a provided on the associated rotor disc annular groove. Thus, the support ring, for example, analogous to that in the DE 26 43 886 revealed be formed Stülpring.

Ferner betrifft die vorliegende Erfindung die Verwendung eines Sicherungsbleches zur Sicherung eines Sicherungsringes, der einen Stützring mit einer Rotorscheibe in Eingriff hält, gegen ein Losdrehen.Furthermore, the present invention relates to the use of a locking plate for securing a retaining ring, which holds a support ring with a rotor disk in engagement against loosening.

Weitere Merkmale und Vorteile der vorliegenden Erfindung werden anhand der nachfolgenden Beschreibung eines Rotors gemäß einer Ausführungsform der vorliegenden Erfindung unter Bezugnahme auf die beiliegende Zeichnung deutlich. Darin ist

Figur 1
eine schematische Querschnittsansicht eines Rotors gemäß der vorliegenden Erfindung;
Figur 2
eine vergrößerte perspektivische Schnittansicht des in Figur 1 mit dem Bezugszeichen II gekennzeichneten Ausschnitts, die eine Anordnung gemäß einer Ausführungsform der vorliegenden Erfindung zeigt;
Figur 3
eine perspektivische Schnittansicht der in Figur 2 gezeigten Ausführungsform der vorliegenden Erfindung im unverriegelten und ungesicherten Zustand;
Figur 4
eine perspektivische Ansicht eines Sicherungsrings der in den Figuren 2 und 3 gezeigten Ausführungsform der vorliegenden Erfindung;
Figur 5
eine vergrößerte perspektivische Ansicht des in Figur 4 mit dem Bezugszeichen V gekennzeichneten Ausschnitts;
Figur 6
eine perspektivische Rückansicht des in Figur 5 gezeigten Ausschnitts;
Figur 7
eine perspektivische Ansicht eines Sicherungsbleches für eine Anordnung gemäß einer Ausführungsform der vorliegenden Erfindung; und
Figur 8
eine perspektivische Ansicht eines Verriegelungs-werkzeugs für den in Figur 4 gezeigten Sicherungs-ring.
Other features and advantages of the present invention will become apparent from the following description of a rotor according to an embodiment of the present invention with reference to the accompanying drawings. That's it
FIG. 1
a schematic cross-sectional view of a rotor according to the present invention;
FIG. 2
an enlarged perspective sectional view of the in FIG. 1 with the reference numeral II section showing an arrangement according to an embodiment of the present invention;
FIG. 3
a perspective sectional view of the in FIG. 2 shown embodiment of the present invention in the unlocked and unsecured state;
FIG. 4
a perspective view of a locking ring in the FIGS. 2 and 3 shown embodiment of the present invention;
FIG. 5
an enlarged perspective view of the in FIG. 4 Section marked with the reference V;
FIG. 6
a perspective rear view of the in FIG. 5 shown section;
FIG. 7
a perspective view of a locking plate for an arrangement according to an embodiment of the present invention; and
FIG. 8
a perspective view of a locking tool for in FIG. 4 shown securing ring.

Die Figuren 1 bis 7 zeigen einen Rotor gemäß einer Ausführungsform der vorliegenden Erfindung. Der Rotor 1, der vorliegend einen Gasturbinenläufer bildet, umfasst eine Vielzahl von jeweils eine axiale Durchgangsöffnung 2 aufweisenden Rotorscheiben 3, eine Hohlwelle 4 und einen sich durch die Durchgangsöffnung 2 und die Hohlwelle 4 erstreckenden Zuganker 5, über den die Rotorscheiben 3 und die Hohlwelle 4 in bekannter Weise unter Verwendung endseitig auf den Zuganker 5 aufgeschraubter Spannteile 6 axial verspannt sind. Dabei sind die Rotorscheiben 3 zu einer verdichterseitigen Rotorscheibeneinheit 7 und einer turbinenseitigen Rotorscheibeneinheit 8 zusammengefasst, wobei die Hohlwelle 4 zwischen den beiden Rotorscheibeneinheiten 7 und 8 angeordnet ist. Die einander zugewandten Stirnflächen unmittelbar benachbart angeordneter Rotorscheiben 3 sind jeweils mit einer nicht näher dargestellten Hirth-Verzahnung versehen, wodurch infolge der Verspannung durch den Zuganker 5 auch eine formschlüssige Verbindung zwischen den benachbarten Rotorscheiben 3 sowie eine Zentrierung bezüglich der Mittelachse M des Rotors 1 erzielt wird. Am Außenumfang der jeweiligen Rotorscheiben 3 sind Laufschaufeln 9 angeordnet. Zwischen den Rotorscheiben 3 vorhandene Zwischenräume 10 dienen zur Führung eines Kühlfluids zum Kühlen der Rotorscheiben 3, das über einen zwischen dem Zuganker 5 und den Rotorscheiben 3 bzw. der Hohlwelle 4 gebildeten Kühlkanal zugeführt wird.The FIGS. 1 to 7 show a rotor according to an embodiment of the present invention. The rotor 1, which in the present case forms a gas turbine rotor, comprises a multiplicity of rotor disks 3 each having an axial passage opening 2, a hollow shaft 4 and a tie rod 5 extending through the passage opening 2 and the hollow shaft 4, via which the rotor disks 3 and the hollow shaft 4 are clamped axially in a known manner using end to the tie rod 5 screwed clamping parts 6. In this case, the rotor disks 3 are combined to form a compressor-side rotor disk unit 7 and a turbine-side rotor disk unit 8, wherein the hollow shaft 4 is arranged between the two rotor disk units 7 and 8. The mutually facing end faces immediately adjacent rotor disks 3 are each provided with a Hirth not shown in detail, which also results in a positive connection between the adjacent rotor disks 3 and a centering with respect to the central axis M of the rotor 1 due to the tension by the tie rod 5 becomes. On the outer circumference of the respective rotor disks 3 blades 9 are arranged. Between the rotor disks 3 existing gaps 10 serve to guide a cooling fluid for cooling the rotor disks 3, which is supplied via a formed between the tie rod 5 and the rotor disks 3 and the hollow shaft 4 cooling channel.

Aufgrund der großen Länge des Zugankers 5 liegen an dessen Außendurchmesser mehrere Stützringe 11 an, die, wie es in den Figuren 2 und 3 dargestellt ist, jeweils mit einer der Rotorscheiben 3 in Eingriff sind. Jeder Stützring 11 weist einen sich aufweitenden Innendurchmesser auf, wobei jeweils das freie Ende mit dem größeren Innendurchmesser in eine an der benachbart angeordneten Rotorscheibe 3 vorgesehene Ringnut 12 greift. Zur axialen Sicherung des Stützrings 11 ist ein Sicherungsring 13 vorgesehen, der jeweils an derjenigen Rotorscheibe 3 mittels einer Drehverriegelung befestigt ist, in die auch der zugeordnete Stützring 11 eingreift. Der Sicherungsring 13 ist derart ausgebildet, dass er eine von der zugeordneten Rotorscheibe 3 weg weisende Stirnfläche 14 des zugeordneten Stützrings 11 umgreift. Jeder Sicherungsring 13 ist einteilig aus Metall hergestellt.Due to the large length of the tie rod 5 are at the outer diameter of a plurality of support rings 11, which, as in the FIGS. 2 and 3 is shown, in each case with one of the rotor disks 3 are engaged. Each support ring 11 has a widening inner diameter, wherein in each case the free end with the larger inner diameter engages in an annular groove 12 provided on the adjacently arranged rotor disk 3. For axial securing of the support ring 11, a securing ring 13 is provided, which is fastened in each case to that rotor disk 3 by means of a rotary lock, in which also the associated support ring 11 engages. The securing ring 13 is designed such that it engages around an end face 14 of the associated support ring 11 facing away from the associated rotor disk 3. Each retaining ring 13 is made in one piece of metal.

Die Drehverriegelung zwischen dem Sicherungsring 13 und der Rotorscheibe 3 ist als eine Bajonettverbindung ausgebildet. Zur Realisierung der Bajonettverbindung weist der Sicherungsring 13 entlang seines Umfangs verteilt radial vorstehende Bajonettvorsprünge 15 auf, die in eine an der zugeordneten Rotorscheibe 3 vorgesehene ringförmige Bajonettnut 16 greifen, die mit korrespondierend zu den Bajonettvorsprüngen 15 ausgebildeten Bajonettvorsprungaufnahmeöffnungen 17 versehen ist, die ein axiales Einsetzen der Bajonettvorsprünge 15 in die Bajonettnut 16 ermöglichen. Entsprechend kann der Sicherungsring 13 axial über den Stützring 11 geschoben werden, wobei die Bajonettvorsprünge 15 in die zugehörigen Bajonettvorsprungaufnahmeöffnungen 17 eingesetzt werden, worauf die Bajonettvorsprünge 15 im Rahmen einer Drehbewegung des Sicherungsrings 13 in der Bajonettnut 16 axial fixiert werden.The rotational lock between the locking ring 13 and the rotor disk 3 is formed as a bayonet connection. To realize the bayonet connection, the securing ring 13 distributed along its circumference radially projecting bayonet projections 15 which engage in a provided on the associated rotor disk 3 annular bayonet 16, which is provided with corresponding to the bayonet projections 15 formed bayonet projection receiving openings 17, the axial insertion of the Allow bayonet projections 15 in the bayonet groove 16. Accordingly, the retaining ring 13 can be pushed axially over the support ring 11, wherein the bayonet projections 15 are inserted into the associated bayonet projection receiving openings 17, whereupon the bayonet projections 15 are axially fixed in the bayonet groove 16 in the context of a rotational movement of the locking ring 13.

Der Sicherungsring 13 weist eine L-förmige Ausnehmung 18 auf, die sich über eine äußere Umfangsfläche des Sicherungsrings 13 und eine der zugeordneten Rotorscheibe 3 zugewandte Stirnfläche des Sicherungsrings 13 erstreckt und einen Bajonettvorsprung 15 mittig teilt. An der der Rotorscheibe 3 abgewandten Stirnfläche des Sicherungsrings 13 sind radial gegenüberliegend zwei Aufnahmeöffnungen 19 vorgesehen, die entsprechende Vorsprünge 20 eines Verriegelungswerkzeugs 21 aufnehmen können.The locking ring 13 has an L-shaped recess 18 which extends over an outer peripheral surface of the locking ring 13 and one of the associated rotor disk 3 facing end face of the locking ring 13 and a bayonet projection 15 divides the center. At the rotor disk 3 facing away from the end face of the locking ring 13 are radially opposite two receiving openings 19 are provided which can receive corresponding projections 20 of a locking tool 21.

An einer äußeren Stirnfläche der Rotorscheibe 3 ist eine sich radial erstreckende Aussparung 22 ausgebildet, deren Breite im Wesentlichen der Breite der an dem Sicherungsring 13 vorgesehenen Ausnehmung 18 entspricht. Die Aussparung 22 ist an der Stirnseite der Rotorscheibe 3 derart positioniert, dass sie mit der Ausnehmung 18 des Sicherungsrings 13 fluchtet, wenn sich dieser in einer Verriegelungsposition befindet.On an outer end face of the rotor disk 3, a radially extending recess 22 is formed, the width of which corresponds substantially to the width of the recess 18 provided on the securing ring 13. The recess 22 is positioned on the end face of the rotor disk 3 so that it is aligned with the recess 18 of the locking ring 13 when it is in a locking position.

Als Losdrehsicherung ist ein Sicherungsblech 23 vorgesehen, das im bestimmungsgemäß montierten Zustand ein Losdrehen des Sicherungsrings 13 aus der Verriegelungsposition verhindert. Das Sicherungsblech 23 besitzt eine Z-förmige Gestalt und ist in der Ausnehmung 18 des Sicherungsrings 13 und der Aussparung 22 der Rotorscheibe 3 aufgenommen. Hierzu entspricht die Breite des Sicherungsbleches 23 im Wesentlichen den Breiten der Ausnehmung 18 und der Aussparung 22.As a security against rotation, a locking plate 23 is provided which prevents the intended assembled state loosening of the locking ring 13 from the locking position. The locking plate 23 has a Z-shaped configuration and is received in the recess 18 of the securing ring 13 and the recess 22 of the rotor disk 3. For this purpose, the width of the securing plate 23 substantially corresponds to the widths of the recess 18 and the recess 22.

Zur Montage des Sicherungsrings 13 wird zunächst der Sicherungsring 13 über den Zuganker 5 gestülpt, so dass er den Stützring 11 einfasst. Dann wird das im vormontierten Zustand zunächst L-förmige Sicherungsblech 23 in die L-förmige Ausnehmung 18 des Sicherungsrings 13 eingelegt. Anschließend wird der mit dem Sicherungsblech 23 versehene Sicherungsring 13 in die Bajonettnut 16 der Rotorscheibe 3 axial eingesetzt, wobei die Bajonettvorsprünge 15 in die entsprechenden Bajonettvorsprungaufnahmeöffnungen 17 eingesetzt werden. Mit dem Verriegelungswerkzeug 21, dessen Vorsprünge 20 in die an dem Sicherungsring 13 vorgesehenen Aufnahmeöffnungen 19 eingesetzt sind, wird nun der Sicherungsring 13 in der Bajonettnut gedreht, bis die Ausnehmung 18 des Sicherungsrings 13 mit der Aussparung 22 der Rotorscheibe 3 fluchtet. Nunmehr ist der Stützring 11 axial zwischen der Rotorscheibe 3 und dem Sicherungsring 13 gehalten und entsprechend gesichert. Das vorstehende freie Ende des Sicherungsbleches 23 wird abschließend in die Aussparung 22 der Rotorscheibe 3 gebogen.For mounting of the securing ring 13, first the securing ring 13 is slipped over the tie rod 5, so that it surrounds the support ring 11. Then in the preassembled state, first L-shaped locking plate 23 is inserted into the L-shaped recess 18 of the securing ring 13. Subsequently, the securing ring 13 provided with the securing plate 23 is inserted axially into the bayonet groove 16 of the rotor disk 3, wherein the bayonet projections 15 are inserted into the corresponding bayonet projection receiving openings 17. With the locking tool 21, whose projections 20 in the on the Circlip 13 provided receiving openings 19 are used, now the locking ring 13 is rotated in the bayonet groove until the recess 18 of the locking ring 13 is aligned with the recess 22 of the rotor disk 3. Now, the support ring 11 is held axially between the rotor disk 3 and the locking ring 13 and secured accordingly. The protruding free end of the locking plate 23 is finally bent into the recess 22 of the rotor disc 3.

Ein wesentlicher Vorteil des erfindungsgemäßen Sicherungsrings 13 besteht darin, dass dieser nicht über den Zuganker 5 gegen den zugehörigen Stützring 11 verspannt wird, weshalb sich Stützringe 11 unabhängig von ihrer Position einfach und preiswert montieren lassen. Auch ein Nachrüsten ist ohne großen Aufwand möglich. Aufgrund seines einfachen Aufbaus kann der Sicherungsring 13 zudem kostengünstig hergestellt werden. Die Verwendung eines Sicherungsbleches 23 zur Sicherung des Sicherungsrings 13 gegen ein Losdrehen bietet darüber hinaus den Vorteil, dass bei der Montage weder auf die Rotorscheibe 3 noch auf den Sicherungsring 13 Kräfte ausgeübt werden, wodurch unerwünschte Verformungen und/oder Rissbildungen vermieden werden. Auch lässt sich die Anordnung problemlos demontieren, was bei Wartungs- oder Reparaturarbeiten von Vorteil ist. Ferner lassen sich die erforderlichen Ausnehmungen 18 bzw. Aussparungen 22 auch nachträglich einfach in Sicherungsringe 13 und Rotorscheiben 3 einbringen, so dass bestehende Losdrehsicherungen durch eine erfindungsgemäße Losdrehsicherung ersetzt werden können.A significant advantage of the securing ring 13 according to the invention is that it is not clamped over the tie rod 5 against the associated support ring 11, which is why support rings 11 can be mounted easily and inexpensively regardless of their position. Retrofitting is possible without much effort. Due to its simple structure, the retaining ring 13 can also be produced inexpensively. The use of a locking plate 23 to secure the locking ring 13 against loosening also offers the advantage that during assembly neither forces on the rotor disk 3 nor on the retaining ring 13 forces are exerted whereby unwanted deformations and / or cracking can be avoided. Also, the arrangement can be dismantled easily, which is for maintenance or repair of advantage. Furthermore, the necessary recesses 18 or recesses 22 can also subsequently be easily introduced into retaining rings 13 and rotor disks 3, so that existing anti-loosening devices can be replaced by an anti-rotation lock according to the invention.

Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen.Although the invention has been further illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.

Claims (10)

  1. Rotor (1), in particular a gas turbine rotor, with multiple rotor discs (3) which each have an axial through-opening (2), are axially clamped by means of at least one tie-rod (5) extending through the through-openings (2), and are combined to form at least one rotor disc unit (7),
    wherein at least one support ring (11) surrounding the tie-rod (5) bears against the outer diameter of the tie-rod (5), the support ring being in engagement with an associated rotor disc (3), and the tie-rod (5) bearing against the rotor disc (3) via this support ring, and wherein for axially securing the at least one support ring (11) there is provided at least one securing ring (13), characterized in that
    the securing ring is fixed to the associated rotor disc (3) by means of a rotation-locking device, and holds the support ring (11) against the rotor disc,
    wherein the securing ring (13) is prevented from twisting loose by means of a securing plate (23).
  2. Rotor according to Claim 1,
    characterized in that
    the securing plate (23) is in engagement with the securing ring (13) and the associated rotor disc (3).
  3. Rotor according to one of the preceding claims,
    characterized in that
    the securing ring (13) has a recess (18) that receives the securing plate (23), which recess extends in an L shape over an outer peripheral surface of the securing ring (13) and an end face, oriented toward the associated rotor disc (3), of the securing ring (13).
  4. Rotor according to one of the preceding claims,
    characterized in that
    the associated rotor disc (3) has, on an outer end face, a recess (22) that extends radially for receiving the securing plate (23), which recess is positioned such that it is aligned with the recess (18) of the securing ring (13) when the latter is in a locking position.
  5. Rotor according to one of Claims 3 and 4,
    characterized in that
    the securing plate (23) is Z-shaped and is received in the recess (18) of the securing ring (13) and in the recess (22) of the associated rotor disc (3).
  6. Rotor according to one of the preceding claims,
    characterized in that
    the rotation-locking device is designed as a bayonet connection.
  7. Rotor according to Claim 6,
    characterized in that
    the securing ring (13) has, distributed along its periphery, radially projecting bayonet projections (15) that engage in an annular bayonet channel (16) provided on the associated rotor disc (3), which bayonet channel is provided with bayonet projection receiving openings (17) designed to correspond to the bayonet projections (15), which openings permit axial insertion of the bayonet projections (15) into the bayonet channel (16).
  8. Rotor according to one of Claims 6 and 7,
    characterized in that
    the recess (18) of the securing ring (13) divides one of the bayonet projections (15), in particular centrally.
  9. Rotor according to one of the preceding claims,
    characterized in that
    the support ring (11) has an inner diameter that widens, and
    in that the support ring (11) engages, with its larger-inner-diameter free end, in an annular channel (12) provided on the associated rotor disc (3).
  10. Use of a securing plate (23) for preventing a securing ring (13), which holds a support ring (11) in engagement with an associated rotor disc (3), from twisting loose.
EP15157557.8A 2015-03-04 2015-03-04 Rotor with a locking plate to prevent a twist lock from spinning off Active EP3064705B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP15157557.8A EP3064705B1 (en) 2015-03-04 2015-03-04 Rotor with a locking plate to prevent a twist lock from spinning off
US15/550,198 US10641096B2 (en) 2015-03-04 2016-01-07 Rotor with a locking plate for securing an antirotation lock against unscrewing
PCT/EP2016/050193 WO2016139002A1 (en) 2015-03-04 2016-01-07 Rotor with a securing plate for preventing a rotational lock from screwing loose
CN201690000556.3U CN208431036U (en) 2015-03-04 2016-01-07 Rotor with the lockplate for preventing rotation lock from unscrewing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15157557.8A EP3064705B1 (en) 2015-03-04 2015-03-04 Rotor with a locking plate to prevent a twist lock from spinning off

Publications (2)

Publication Number Publication Date
EP3064705A1 EP3064705A1 (en) 2016-09-07
EP3064705B1 true EP3064705B1 (en) 2017-11-01

Family

ID=52596843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15157557.8A Active EP3064705B1 (en) 2015-03-04 2015-03-04 Rotor with a locking plate to prevent a twist lock from spinning off

Country Status (4)

Country Link
US (1) US10641096B2 (en)
EP (1) EP3064705B1 (en)
CN (1) CN208431036U (en)
WO (1) WO2016139002A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2933432A1 (en) * 2014-04-15 2015-10-21 Siemens Aktiengesellschaft Rotor with axially secured support ring

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE534314A (en) * 1953-12-24
DE2643886C2 (en) 1976-09-29 1978-02-09 Kraftwerk Union AG, 4330 Mülheim Disc-type gas turbine rotor
US4558988A (en) * 1983-12-22 1985-12-17 United Technologies Corporation Rotor disk cover plate attachment
US6575703B2 (en) * 2001-07-20 2003-06-10 General Electric Company Turbine disk side plate
RU2230195C2 (en) * 2002-05-30 2004-06-10 Открытое акционерное общество "Авиадвигатель" Multistage turbine rotor
US8979502B2 (en) * 2011-12-15 2015-03-17 Pratt & Whitney Canada Corp. Turbine rotor retaining system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3064705A1 (en) 2016-09-07
WO2016139002A1 (en) 2016-09-09
US20180023394A1 (en) 2018-01-25
US10641096B2 (en) 2020-05-05
CN208431036U (en) 2019-01-25

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