EP2352905B1 - Dispositif d'assemblage avec un tirant d'ancrage et procédé correspondant pour un système rotorique d'une turbomachine axiale - Google Patents

Dispositif d'assemblage avec un tirant d'ancrage et procédé correspondant pour un système rotorique d'une turbomachine axiale Download PDF

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Publication number
EP2352905B1
EP2352905B1 EP09801389.9A EP09801389A EP2352905B1 EP 2352905 B1 EP2352905 B1 EP 2352905B1 EP 09801389 A EP09801389 A EP 09801389A EP 2352905 B1 EP2352905 B1 EP 2352905B1
Authority
EP
European Patent Office
Prior art keywords
tie rod
force generator
rotor system
force
push
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.)
Not-in-force
Application number
EP09801389.9A
Other languages
German (de)
English (en)
Other versions
EP2352905A1 (fr
Inventor
Werner Humhauser
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.)
MTU Aero Engines AG
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MTU Aero Engines 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 MTU Aero Engines AG filed Critical MTU Aero Engines AG
Publication of EP2352905A1 publication Critical patent/EP2352905A1/fr
Application granted granted Critical
Publication of EP2352905B1 publication Critical patent/EP2352905B1/fr
Not-in-force legal-status Critical Current
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
    • 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
    • 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
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • 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
    • 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
    • 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
    • Y10T29/53—Means to assemble or disassemble

Definitions

  • the invention relates to a device and a method for mounting a rotor system of an axial flow machine with a central tie rod, as is known in particular from engine technology.
  • tie rod Combinations of central (tie rod) and decentralized (screw) connections are known, for example from the document EP 1 321 626 A1 .
  • the tie rod is basically guided through a central bore, which passes through all the slices to be joined, and has components at both its ends, by means of which it is positively or non-positively connected to the first or the last of the discs.
  • the joining of the slices to be joined is then effected by a compressive stress exerted by the tie rod on both sides of the composite.
  • Such tie rods have a number of advantages. Radial piercing of the discs and the notch points associated therewith are eliminated, as well as the presence of welds with the usually necessary reworking; also the possibility of a slight disassembly is given.
  • the bias voltage can drop below a minimum necessary value, so that the rotor disks are released from the composite, or the voltage can rise above a maximum value, so that the tie rod breaks.
  • the publication DE 10 2005 052 819 A1 deals with this problem, but also here, a conventional shaft nut for biasing the multi-part tie rod is used.
  • the object of the invention is therefore to provide an apparatus and a method which overcomes the disadvantages of the prior art.
  • the disadvantages of high wear, high numbers of parts and corresponding costs should be avoided.
  • the device according to the invention is a mounting device for a composite consisting of several successive disks, in particular for a rotor system of an axial flow machine, using a tie rod.
  • This tie rod has a front and a rear end, each having a force introduction component.
  • the front end has in the case of an engine in the suction direction, and the rear end points in the ejection direction.
  • the composite of disks to be produced may preferably be a rotor system with a rotor disk assembly of at least two successive disks (rotors). These must be clamped in the assembled state so that a nominal prestress Sigma nominal is applied to the composite by the tie rod. This nominal prestress compresses the composite so that it is no longer possible to change the position of the rotors relative to one another during operation.
  • the push rod is connected to the force generator at the front and at the rear end of the tie rod such that when generating a compressive force with the force generator of the tie rod is stretched by applying a mounting bias sigma assembly .
  • the push rod is therefore used together with the force generator to stretch the tie rod, so that adjusts a certain tensile stress in its cross section.
  • the push rod is designed so that it extends substantially over the entire length of the tie rod.
  • the power generator only has to make up a small part of this length, because the increase in length which the force generator imposes on the tie rod by its extension is limited and amounts to, for example, only a few millimeters.
  • the push rod therefore serves to extend the force generator.
  • the push rod is designed interchangeable, so that depending on the specific assembly task push rods of different lengths and / or with different diameters, etc. can be used.
  • the tie rod must have force introduction components at both ends, so that the tensile forces acting axially on it and on the discs to be clamped can be introduced or deflected.
  • the tie rod has at one end as Kraftum Gustavskomponente a Switzerlandankergewinde for screwing into the corresponding arranged at this end disc of the rotor system.
  • This thread is therefore according to the invention preferably an external thread.
  • the tie rod exclusively on this Huaweiankergewinde as force introduction component at this end.
  • the force generator is arranged at the other end of the tie rod. In other words, it is in principle irrelevant whether the tie rod thread on the front and the power generator is located at the rear end of the tie rod or vice versa. However, it is preferred that the two components are arranged at different ends of the tie rod.
  • the tie rod at its other end as a force introduction component on a radial shoulder for positive connection with the disc arranged at this end of the rotor system, which preferably has a corresponding end-side mating surface.
  • the tie rod has exclusively this radial shoulder as a force introduction component at this end.
  • the radial paragraph is designed and arranged so that the tie rod contracts when relieving the applied by means of the push rod and the power generator mounting bias sigma assembly , but only so far until the radial shoulder comes into contact with the preferably existing counter surface, which adjoins the disc which is arranged at the corresponding end of the tie rod. Subsequently, the tensile force inherent in the tie rod exerts a compressive force of the same magnitude on the corresponding opposing surface, so that the composite of the discs is compressed. If the tie rod can relax even slightly, the resulting force is smaller than the assembly bias sigma assembly and preferably corresponds to the nominal bias Sigma nominal .
  • the power flow runs in the assembled state as a tensile force through the tie rod, at its one end over the Glasankergewinde in the rotor assembly, as a compressive force therethrough, and is returned at the other end by means of the mating surface of the last disc to the radial shoulder of the corresponding end of the tie rod in this.
  • a tightening a shaft nut is no longer necessary, provided that the sizing of the components and the correct amount of mounting bias sigma assembly is ensured that also sets the desired nominal bias Sigma nominal .
  • this dimensioning is easily possible for any skilled person and therefore need not be further elaborated at this point.
  • the mounting system according to the invention also includes a connector for releasably, positively and / or non-positively connecting the power generator with the other end of the tie rod.
  • This connecting piece is arranged on the end of the force generator pointing away from the tie rod.
  • the connector has a pressure surface that is in contact with the force generator, and a mounting area that can be connected to the tie rod.
  • this attachment region is designed as a screw thread, wherein the tie rod an external thread, the connector carries an internal thread.
  • the erfingdungsdorfe force generator is designed as a hydraulic cylinder. Such devices can generate the necessary forces in a small space, which are necessary for the Vorrecken invention of the tie rod.
  • the power generator can alternatively be designed as a pneumatic, mechanical or electrical device.
  • the push rod according to the invention is designed as a hollow body.
  • the weight of the same can be kept so low that the assembly of the push rod can be accomplished without special aids of one or two people.
  • it must be ensured that the stability required for the application is ensured. Therefore, in particular Push rods with the largest possible, but thin-walled as possible cross-section, since they have a smaller cross-sectional area at the same area moment of inertia.
  • the tie rod on its outer wall comprises one or more radial support surfaces for supporting the components surrounding the tie rod thereto.
  • This can be particularly advantageous for very long tie rods. While too large a number of radial support surfaces can lead to excessive friction during assembly, too small a number can lead to a running at operating speed in the rotor dynamic supercritical speed range tie rods.
  • the mounting device further comprises components for pre-upsetting the rotor system to nominal prestress Sigma nominal .
  • These components can be hydraulically, pneumatically, mechanically or electrically driven, for example, and serve to place the initially loosely assembled rotor disk assembly under an axially acting compressive stress so that it is compressed and at the same time held by the frictional forces generated at the contact surfaces of the disks.
  • the components are designed so that they do not hinder insertion and use of the tie rod, the push rod and the power generator in accordance with the invention, and in turn are not hindered by the other components of the device according to the invention.
  • the components must also be capable of applying at least the nominal prestressing Sigma nominal required for safe assembly to the composite.
  • the components for pre-compression of the rotor disc composite initially compress, and in these then the prestressed with push rod and power generator tie rod is introduced. After screwing in the tie rod, both this and the prestressed or pre-compressed rotor disk assembly are relaxed. If the tie rod and the rotor disk assembly were respectively prestressed or pre-compressed to nominal prestress Sigma nominal , this tension remains in the system, so that a pre-tension corresponding to the specifications is ensured.
  • the invention also discloses a method for mounting a tie rod for a rotor system with a mounting device according to claim 1. This is subdivided into the following steps:
  • the push rod is introduced together with the force generator in the tie rod, so introduced axially centrally in the designed as a hollow shaft tie rods.
  • the one for example, the front end of the push rod is connected to the corresponding end of the tie rod.
  • the tie rod for example, have a radial inner shoulder, which abuts the one end of the push rod.
  • the tie rod is now connected on one side with the push rod and thus able to absorb at least compressive forces.
  • the assembly device of pressure rod with force generator and tie rod is introduced in the stretched, biased state in the rotor system.
  • the Rotor system must be at least loosely assembled; it is preferably secured accordingly, so that during the introduction of the mounting device no unintentional Relativverschiebitch the components of the rotor system can occur.
  • the one, for example, front end of the prestressed tie rod force and / or form-fitting connected to the disc arranged at this end of the rotor system which is particularly preferably done by means of screwing.
  • the screwing takes place only so far that the other, for example, the rear end of the tie rod gets a positive connection with the disc arranged at this other end of the rotor system.
  • This form fit must now be suitable only for absorbing compressive forces, which later lead to a compression of the rotor disk assembly by means of the tie rod. Accordingly, here is a simple radial paragraph sufficient, which cooperates with a corresponding counter-surface, which is located at the front side of the disposed at this end of the rotor system disc.
  • the mounting bias sigma assembly is reduced to zero, so that the tie rod now in turn relaxes by exerting a compressive force on the rotor system. Preferably, this is done until the remaining bias voltage is just sigma rated .
  • the actual preload is achieved by a balance between a possible preload (compression, immediately) of the rotor system and the mounting bias of the tie rod.
  • the relaxed push rod with the force generator is removed from the tie rod. Since the force generator and possibly the connector no longer exert pressure on the tie rod, this only the connection to the power generator opposite end of the tie rod, for example by unscrewing the corresponding thread, solved and the push rod to be pulled out of the hollow tie rod.
  • the steps can be repeated in the event that the nominal prestressing voltage obtained is too small or too large, with appropriate spacers having to be inserted or removed from a suitable location.
  • the rotor disk assembly prior to the first step described above, is prestressed or compressed by means of corresponding components for pre-upsetting. Particularly preferably, this compression takes place precisely on the nominal prestress Sigma nominal .
  • this step reference is made to the above statements regarding the components for pre-upsetting. Also according to this embodiment closes after the last step still a withdrawal of the pre-compression by relaxing the rotor system and a decrease in the components for pre-ups.
  • the mounting bias of the tie rod sigma assembly is just equal to the nominal bias Sigma nominal .
  • the nominal bias Sigma nominal it is ensured that the joint relaxation of the prestressed (stretched) tie rod and the prestressed (compressed) rotor system, a balance of power is established in which just set the desired nominal bias Sigma nominal .
  • the tie rod "screwed" for example, up to a radial shoulder (stop collar), so that a relaxation of the tie rod directly to exerting a compressive force on the rotor system without the Tie rod initially "relaxed" into the void.
  • FIG. 1 shows a schematic longitudinal half-section through a part of an axial flow machine shown in a very simplified manner, in particular a composite of rotor disks, and a tie rod for tensioning the same.
  • the axis of rotation is symbolized by the dot-dash line.
  • the mounting device 1 which is composed of the components tie rod 2, which is designed as a hollow shaft, and the push rod 3 and the force generator 4 and a connecting piece 5.
  • the tie rod 2 has at its one end, shown on the left in the picture, a radial shoulder 7. This is able to absorb compressive forces exerted by the push rod 3 on the tie rod 2. At its other end, shown on the right in the image, the tie rod 2 has a threaded connection G, which engages with the connecting piece 5. Furthermore, the tie rod 2 comprises a further radial shoulder 8, which is designed and arranged such that it abuts or abuts against a corresponding mating surface of the rotor system 6 shown schematically and greatly simplified.
  • the rotor system 6 has at its end, which is arranged opposite to this counter surface, an internal thread, which together with a corresponding external thread of the tie rod a threaded connection G 'results.
  • the tie rod 2 is screwed at this point in the rotor system 6, and indeed so far, until it abuts with the radial shoulder 8 (stop) to the rotor system 6.
  • the force generator 4 connects.
  • the latter is used to generate a compressive force, which is required for biasing the tie rod 2; the push rod 3 is only the Verifrun of the force generator 4.
  • the force generator 4 is designed as a hydraulic cylinder. On its one side (in the picture on the left) it has a threaded connection G "with the push rod 3, so that these two components can be treated as a constructional unit At its other end (in the picture on the right) the force generator 4 has a pressure surface 9 on, which serves the pressure force transmission to the connector 5.
  • the connecting piece 5 finally serves to initiate the compressive force of the force generator 4 in the tie rod 2, in which it leads to a longitudinal expansion.
  • the tie rod 2 For mounting the mounting device 1, first the tie rod 2 by means of the push rod 3 with force generator 4, which are non-positively and / or positively connected thereto, pre-stretched, wherein it stretches.
  • the tensioned tie rod 2 is thus introduced into the rotor system 6, which is preferably in turn pre-immersed (not shown).
  • the tie rod 2 is fixed with the threaded connection G 'on one side in the rotor system 6, by means of screwing to the point where the radial shoulder 8 abuts against the rotor system 6.
  • the tie rod 2 is relaxed by canceling the compressive stress applied by the force generator 4, thereby trying to contract. However, if the tie rod 2 already has positive contact with the rotor system 6, this contraction is inhibited by the rotor system 6. The existing tension in the tie rod 2 is now used to compress the rotor system 6 (to brace).
  • the assembly bias sigma assembly which is applied during mounting, is reduced by relaxation by a certain value, so that the sigma assembly value must be correspondingly higher in order to achieve a desired nominal bias sigma nominal .
  • the rotor system 6 is biased by means also not shown components for pre-upsetting (compressed), and preferably straight to the value of Sigma Nenn , to which the tie rod 2 is biased.
  • pre-upsetting compressed
  • Sigma Nenn the value of Sigma Nenn
  • FIG. 2 the detail of an alternative attachment in the form of a shaft nut 10 is shown in the prior art.
  • the shaft nut 10 has an internal thread, which produces a threaded connection G with the tie rod 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (9)

  1. Dispositif de montage (1) pour un système de rotor d'une turbomachine axiale, au moins un tirant (2) étant prévu, avec une extrémité avant et une extrémité arrière ayant chacune un composant d'application de force, et le système de rotor (6) comprenant un assemblage de disques de rotor, lequel comporte au moins deux disques successifs et présente en état de montage une précontrainte nominale Sigmanom résultant de la précontrainte par le tirant (2), caractérisé en ce qu'un outil d'étirage est prévu pour le montage, lequel comprend au moins les composants suivants :
    - une barre de pression (3) avec une extrémité avant et une extrémité arrière, disposée coaxialement à l'intérieur du tirant (2) creux ; avec
    - un générateur de force (4) pour l'application d'une force de pression sur une des extrémités de la barre de pression (3) ;
    la barre de pression (3) pouvant être raccordée au générateur de force (4) à l'extrémité avant et à l'extrémité carrière du tirant (2) de manière à allonger le tirant (2) par application d'une précontrainte de montage Sigmamontage lors de la génération d'une force de pression par le générateur de force (4).
  2. Dispositif de montage (1) selon la revendication 1, caractérisé en ce que le tirant (2) présente à une extrémité, en tant que composant d'application de force, un filetage de tirant (G') à visser dans le disque du système de rotor (6) disposé de manière correspondante à cette extrémité, et en ce que le générateur de force (4) est disposé à l'autre extrémité du tirant (2).
  3. Dispositif de montage (1) selon la revendication 1 ou 2, caractérisé en ce que le tirant (2) présente à son autre extrémité, en tant que composant d'application de force, un épaulement radial (8) pour le raccordement par correspondance de forme au disque du système de rotor (6) disposé à cette extrémité, et en ce que ledit disque présente une surface antagoniste correspondante.
  4. Dispositif de montage (1) selon l'une des revendications 1 à 3, comprenant en outre une pièce de connexion (5) pour le raccordement amovible, par correspondance de forme et/ou par adhérence du générateur de force (4) avec l'autre extrémité du tirant (2).
  5. Dispositif de montage (1) selon la revendication 4, où la pièce de connexion (5) présente une surface de pression (9) pour la réception des efforts du générateur de force (4), et un filetage (G) pour le vissage à l'extrémité correspondante du tirant (2).
  6. Dispositif de montage (1) selon l'une des revendications précédentes, où le générateur de force (4) est un cylindre hydraulique.
  7. Dispositif de montage (1) selon l'une des revendications précédentes, où la barre de pression (3) est creuse.
  8. Dispositif de montage (1) selon l'une des revendications précédentes, où le tirant (2) comporte sur sa paroi extérieure une ou plusieurs surfaces d'appui radiales pour l'appui sur le tirant (2) des composants entourant celui-ci.
  9. Procédé de montage d'un tirant (2) pour un système de rotor (6) avec un dispositif de montage (1) selon la revendication 1, comprenant les étapes suivantes :
    - mise en place de la barre de pression (3) avec le générateur de force (4) dans le tirant (2) ;
    - raccordement par adhérence et/ou par correspondance de forme de la première extrémité de la barre de pression (3) avec l'extrémité correspondant du tirant (2) ;
    - raccordement par adhérence et/ou par correspondance de forme de l'autre extrémité de la barre de pression (3) avec le générateur de force (4) ;
    - raccordement par adhérence et/ou par correspondance de forme du générateur de force (4) avec l'autre extrémité du tirant (2) ;
    - application sur la barre de pression (3) d'une force de pression au moyen du générateur de force (4), de manière à allonger le tirant (2) à une précontrainte de montage Sigmamontage, Sigmamontage étant supérieur ou égal à Sigmanom ;
    - mise en place du dispositif de montage (1) composé de la barre de pression (3) avec le générateur de force (4) activé et le tirant (2) en état d'étirement dans le système de rotor (6) ;
    - raccordement par adhérence ou par correspondance de forme de la première extrémité du tirant (2) avec le disque du système de rotor (6) disposé à cette première extrémité de manière à générer une correspondance de forme de l'autre extrémité du tirant (2) avec le disque du système de rotor (6) disposé à cette autre extrémité ;
    - réinitialisation à zéro de la précontrainte de montage Sigmamontage par désactivation du générateur de force (4), de telle manière que le tirant (2) exerce alors lui-même une force de pression sur le système de rotor (6) ;
    - retrait hors du tirant (2) de la barre de pression (3) exempte d'efforts avec le générateur de force (4) désactivé.
EP09801389.9A 2008-12-04 2009-12-02 Dispositif d'assemblage avec un tirant d'ancrage et procédé correspondant pour un système rotorique d'une turbomachine axiale Not-in-force EP2352905B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008060571A DE102008060571A1 (de) 2008-12-04 2008-12-04 Montagevorrichtung für ein Rotorsystem einer Axial-Strömungsmaschine
PCT/DE2009/001700 WO2010063272A1 (fr) 2008-12-04 2009-12-02 Dispositif de montage comportant un tirant et procédé correspondant pour un système de rotor d'une turbomachine axiale

Publications (2)

Publication Number Publication Date
EP2352905A1 EP2352905A1 (fr) 2011-08-10
EP2352905B1 true EP2352905B1 (fr) 2015-02-18

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Application Number Title Priority Date Filing Date
EP09801389.9A Not-in-force EP2352905B1 (fr) 2008-12-04 2009-12-02 Dispositif d'assemblage avec un tirant d'ancrage et procédé correspondant pour un système rotorique d'une turbomachine axiale

Country Status (5)

Country Link
US (1) US8764390B2 (fr)
EP (1) EP2352905B1 (fr)
CA (1) CA2742868A1 (fr)
DE (1) DE102008060571A1 (fr)
WO (1) WO2010063272A1 (fr)

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US11105204B2 (en) 2019-06-11 2021-08-31 Pratt & Whitney Canada Corp. Turbine assembly

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US6375421B1 (en) * 2000-01-31 2002-04-23 General Electric Company Piggyback rotor blisk
US6428272B1 (en) * 2000-12-22 2002-08-06 General Electric Company Bolted joint for rotor disks and method of reducing thermal gradients therein
EP1321626A1 (fr) 2001-12-21 2003-06-25 Siemens Aktiengesellschaft Rotor de turbine à gaz
US7452188B2 (en) * 2005-09-26 2008-11-18 Pratt & Whitney Canada Corp. Pre-stretched tie-bolt for use in a gas turbine engine and method
DE102005052819A1 (de) 2005-11-05 2007-05-10 Mtu Aero Engines Gmbh Turbomaschine, insbesondere Gasturbine
DE102007031712A1 (de) * 2007-07-06 2009-01-08 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung und Verfahren zum Einspannen von beschaufelten Rotorscheiben eines Strahltriebwerkes
US8100666B2 (en) * 2008-12-22 2012-01-24 Pratt & Whitney Canada Corp. Rotor mounting system for gas turbine engine
US8186939B2 (en) * 2009-08-25 2012-05-29 Pratt & Whitney Canada Corp. Turbine disc and retaining nut arrangement

Also Published As

Publication number Publication date
DE102008060571A1 (de) 2010-06-10
EP2352905A1 (fr) 2011-08-10
WO2010063272A1 (fr) 2010-06-10
CA2742868A1 (fr) 2010-06-10
US20110225822A1 (en) 2011-09-22
US8764390B2 (en) 2014-07-01

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