EP2134928A1 - Assembly device for assembling and disassembling a rotor of a turbomachine consisting of rotor disks - Google Patents

Assembly device for assembling and disassembling a rotor of a turbomachine consisting of rotor disks

Info

Publication number
EP2134928A1
EP2134928A1 EP08735742A EP08735742A EP2134928A1 EP 2134928 A1 EP2134928 A1 EP 2134928A1 EP 08735742 A EP08735742 A EP 08735742A EP 08735742 A EP08735742 A EP 08735742A EP 2134928 A1 EP2134928 A1 EP 2134928A1
Authority
EP
European Patent Office
Prior art keywords
rotor
foundation
securing device
turning block
platform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08735742A
Other languages
German (de)
French (fr)
Other versions
EP2134928B1 (en
Inventor
Johann Floter
Armin Hülfenhaus
Claus VÖGELIN
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 PL08735742T priority Critical patent/PL2134928T3/en
Priority to EP20080735742 priority patent/EP2134928B1/en
Publication of EP2134928A1 publication Critical patent/EP2134928A1/en
Application granted granted Critical
Publication of EP2134928B1 publication Critical patent/EP2134928B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
    • 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
    • F05D2230/70—Disassembly 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
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • 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
    • F05D2240/00—Components
    • F05D2240/90—Mounting on supporting structures or systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/37—Impeller making apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49828—Progressively advancing of work assembly station or assembled portion of work

Definitions

  • the invention relates to a mounting device for assembling and disassembling a rotor of a turbomachine composing rotor of a turbomachine, which rotor discs are clamped together by at least one tie rod, comprising a mounted on a foundation turning block and a securing device which pivotally mounted on the turning block, opposite a Horizontal plane of the foundation transversely erected rotor against tipping secures.
  • a rotor variant comprises a plurality of adjacent elements, which are braced by a tie rod extending centrally through the elements.
  • these elements are rotor disks and, on the other hand, pipe sections, so-called hollow shafts, which can rest on the rotor disks.
  • the clamping of the rotor disks and the hollow shafts takes place with respective end nuts screwed on the tie rod nuts, often the compressor side provided screw nut is designed as a hollow shaft.
  • the face-side juxtaposed rotor discs usually carry at their outer peripheries the blades of the turbine and the compressor. Instead of a central tie rod, it is also known to use several decentralized, off-center tie rods.
  • an assembly tool which essentially comprises two bearing blocks.
  • the two bearing blocks are placed at a distance from each other and the rotor is placed on them.
  • One of the two bearing blocks - the so-called turning block - is equipped with a joint arranged between foot and bearing surface, which is fastened to one end of the rotor.
  • the rotor is thus placed so that its example compressor side end can be attached directly to the joint of the turning block.
  • the other bracket then supports the rotor on the turbine side.
  • the joint which is attached to the reversing jack, serves to relocate the rotor from the horizontal position to a vertical position. This is done at the turbine end of the
  • Rotor screwed on a trailer nut on the tie rod A rope of a crane is attached to the hanger by means of a shackle. As the crane lifts the turbine end of the rotor, the compressor end rotates about the pivot point of the joint. The lifting process is completed when the rotor has reached an approximately vertical position. Then this is secured by means of a fuse, which is also provided on the turning block against tipping over. As a rule, this lock comprises a locking bolt, which is provided on the turning bracket above the hinge and blocks the return movement of the rotor from the vertical. Then the trailer nut is dismantled, after which the actual work can be done on the vertical rotor (or tie rod).
  • the tie rod is first set up vertically and then the individual rotor discs are threaded successively from above onto the tie rod by means of a crane. Subsequently, a turbine-side rotor nut is screwed. When disassembling a fully assembled rotor, the turbine-side rotor nut is removed after its vertical placement, after which the individual rotor discs can be removed from the tie rod. The rotor then essentially only comprises the tie rod.
  • a similar set-up device with a turning block is known from German Offenlegungsschrift 24 26 231.
  • Central A first stop is fastened to the foundation below the turnbuckle.
  • the end of the rotor is not attached to the turning block, but a rotor point spaced from the end.
  • the arranged on the shorter rotor portion coupling flange is located after the vertical installation on the first stop, after which on the other side of the flange then adapted a second stop and firmly connected by screws with the first stop to secure the rotor against tipping.
  • Object of the present invention is to provide a new mounting device for assembling and disassembling a rotor discs composed of rotor of a turbomachine, with an earthquake-proof support of the vertically erected rotor is achieved.
  • the invention is based on the recognition that an earthquake-proof mounting device can be obtained if the turning block and the securing device can be fastened to the foundation separately from tipping over one another. So far, the safety device was either provided on the turning block, or relatively close to the Umschwenkddling. Because of this arrangement, only a comparatively weak securing of the vertical rotor was possible, which could no longer ensure safe support of the vertically erected for mounting or dismounting rotor in areas where smaller earthquakes occur relatively frequently - for example in California or New Zealand. Due to this requirement, the use of the securing device supporting supports is provided according to the invention, which are fixed to the foundation and span a foundation surface in which the turning block is arranged.
  • the safety device is, so to speak, via a scaffold made up of supports jacked.
  • the turn block according to the invention then absorbs only the weight forces of the vertically erected rotor and forwards them into the foundation. A torque load of the turn block mounting, as in the prior art, is thus avoided. Consequently, this can be made relatively simple.
  • the forces acting laterally on the safety device from the rotor can be conducted into the foundation beyond the turnbuckles via the supports fastened in the vicinity of the turnbuckle.
  • the distance between the supporting point of the rotor projected onto the foundation and the likewise projected points of its lateral support, which prevents the rotor from tipping over the axis of rotation of the joint, is significantly increased by the use of preferably four
  • the distance between the central attachment point of the rotor at the turnbuckle and the point of its lateral support determined at the vertical height of the foundation is significantly increased, whereby the lateral support forces to be absorbed by the securing device and to be derived from the supports can be kept comparatively small.
  • the invention thus provides a particularly reliable and reliable mounting device for assembling and disassembling a rotor composed of rotor disks of a turbomachine.
  • the securing device in this case comprises a support surface on which the rotor rests.
  • the support surface is slightly displaceable.
  • the forces acting on the securing device transversely to the normal force from the rotor are comparatively small, so that the securing device can be dimensioned accordingly.
  • the vertical rotor allows a particularly simple threading or removal of rotor disks on the tie rod. If the support surface against which the rotor engages can be displaced in a plane approximately parallel to the horizontal plane, the already approximately perpendicular rotor can be aligned such that only balance forces must be absorbed by the securing device and its frame. In this case, the entire weight of the rotor is then borne by the turning block and directed into the foundation.
  • the securing device is arranged above the foundations on four supports arranged on the foundation in the rectangle.
  • the securing device only has to absorb comparatively small forces if it comprises at least one support surface, by means of which the rotor set up transversely to the horizontal plane can be supported laterally, and in which the vertical deviation stood between a joint of the turning block and the supporting surface arranged above 2 m to 3 m.
  • the securing device has a platform or working platform jacked up on a plurality of supports and struts above the foundation.
  • the platform serves, for example, as a work platform for fitters, who make the alignment of the rotor in the vertical.
  • the support surface at the height of the platform, for example in the bottom is provided.
  • the one or more support surfaces, which are provided on horizontally displaceable elements, can then be connected to the platform via the screw connections or the hydraulic cylinders.
  • the turning block is designed such that it passes the weight of the rotor circular area in the foundation.
  • a punctual, possibly unacceptably high weight load of the foundation can be largely avoided.
  • the weight load of the rotor is distributed by turning block on the circular connecting surface of turning block and foundation.
  • FIG 2 shows the mounting device according to FIG 1 with vertical rotor
  • 3 shows the top view of the securing device with open recording and 4 shows the top view of the securing device with inserted rotor.
  • FIG. 1 a stored on two bearing blocks 11 rotor 13 a heavy stationary gas turbine is shown.
  • the rotor 13 includes a tie rod 15 which extends centrally through a plurality of turbine disks 17 and compressor disks 19.
  • the compressor-side end of the rotor 13 is shown on the left.
  • the turbine disks 17 and the compressor disks 19 are rotor disks 21 and carry at their outer ends blades which can be exposed to a compressible flow medium of the gas turbine.
  • a front hollow shaft 22 is screwed onto the tension anchor 15 at the compressor-side end 33 of the rotor 13.
  • a nut 24 is provided.
  • a mounting device 23 is provided in addition to the two bearing blocks 11, which is arranged rotorend perfume.
  • the mounting device 23 comprises a turning bracket 27 which is mounted on a foundation 29.
  • the turning block 27 is set up in alignment with the two bearing blocks 11 and has at its tip a joint 31 which is connected to the compressor-side end 33 of the rotor 13.
  • the rotor 13 is rotatable about an axis of rotation parallel to the horizontal plane 47 of the joint 31.
  • the joint 31 comprises a roller-mounted receptacle for a rotatable about a vertical axis 35 turntable 37. On the vertical axis 35 is also the Rotorabstütztician.
  • a trailer nut 41 is mounted on the means of a shackle the rope of a crane can be struck.
  • the mounting device 23 further comprises a securing device 45 designed as a frame 43, which is anchored separately in the foundation 29 by the turning block 27.
  • the framework 43 comprises a platform 49 or work platform jacked up on four vertical supports 64.
  • further struts 65 extending transversely to the supports 64 are provided on each side edge of the framework 43, which additionally connect the foundation-side ends of the supports 64 to the platform 49.
  • part of the platform 49 and the struts 65 arranged underneath can be moved out of the pivoting range of the rotor 13.
  • the platform 49 and the securing device 45 then have an opened receptacle (see FIG.
  • the least force is required when the rotor 13 is vertical is aligned and the axis of symmetry 46 of the rotor 13 coincides with the axis 35 of the turntable 37.
  • earthquake safety means that the acceleration forces that occur in comparatively weak earthquakes with a comparatively low level of force on the
  • Rotor 13 in the order of about H g (Ig simple acceleration of gravity) collected by the securing device 45 and can be derived via the platform 49 and the struts 65 into the foundation 29.
  • FIGS. 3 and 4 show the plan view of the platform 49 of the securing device 45 according to the sectional view IV. IV of FIG 2.
  • FIG. 4 shows the closed platform 49 with centrally arranged tie rod 15 and front hollow shaft 22 according to the sectional view IV. IV of FIG 2.
  • a centrally disposed opening 51 is provided, in which an axial portion of the hollow shaft 22 can be inserted.
  • the opening 51 is surrounded by a segmented ring 53 whose first segment 55 comprises a segment arc of approximately 270 ° and whose second segment 57 comprises a segment arc of approximately 90 °.
  • the second ring segment 57 is pivotable relative to the first ring segment 55 about an axis of rotation 59, which serves for easy and quick closing and opening of the ring 53 (see FIG. Both segments 55, 57 each have an inwardly directed support surface 61, which can each be applied to a portion of the lateral surface of the rotor 13 and the tie rod 15.
  • the ring 53 lies in a plane parallel to the horizontal plane 47, ie parallel to the foundation 29, and can be displaced by means of an auxiliary device supporting it within this plane for vertical alignment of the rotor 13.
  • the Auxiliary device comprises, for example, a plurality of screw connections 63 fastened to the platform 49. Each of these screw connections 63 has a screw axis 67 which likewise lies in the plane parallel to the horizontal plane 47.
  • the screwed connections 63 are arranged radially in the closed ring 53, so that their screw axes 67 meet in a virtual center 66.
  • screw 63 can also be provided in each case a hydraulic arrangement with a movable piston rod to laterally support the ring 53 and thereby align the rotor 13 (or tie rod 15) relative to the turn block 27 such that of this from an approximately vertical orientation in a vertical alignment can be shifted.
  • the ring 53 may be mounted in a double-nested eccentric, so that the opening 51 relative to the axis 35 of the turning block 27 is arbitrarily alignable.
  • the ring 53 is only optional.
  • the lateral support of the rotor 13 it is also possible for the lateral support of the rotor 13 to take place directly from the screw connections 63 or directly from the piston rods of the hydraulic cylinders.
  • the support surfaces 61 would then be arranged on the inwardly projecting free ends 69 of the screw 63 or the inwardly projecting free ends of the piston rods of the hydraulic cylinders, which would then be applied directly to the lateral surface of the rotor 13.
  • the ring 53 and the platform 49 In order for the rotor 13 to be pivoted into the opening 51 when lifting its turbine-side end 39, the ring 53 and the platform 49 must first be opened.
  • the second segment 57 of the ring 53 is pivotable about the rotation axis 59 according to the arrow 60 from a closed position to an open position (shown).
  • the struts 65 and the railing 70 of the working platform shown in the bottom of FIG. 3 are of the Platform 49 folded away according to the arrow 62, so that a total of the recording is open.
  • FIG 4 shows the top view of the securing device 45 with the approximately completely closed ring 53.
  • the ring 53 surrounds the hollow shaft 22, so that the support surfaces 61 abut against the lateral surface of the hollow shaft 22.
  • the ring 53 is displaceable over the individual screw 63 in the plane parallel to the foundation 29, so that the center of the ring 53 and thus the center of the tie rod 15 relative to the turn block 27 and thus relative to the central Rotorabstütztician is slightly displaced to the rotor thirteenth in a vertical orientation.
  • the latter larger, outgoing from the rotor forces and moments and forward into the foundation as a backup device, which is mounted directly on the turning block. Larger forces can occur, for example, with comparatively smaller earthquakes, so that now the device according to the invention satisfies earthquake requirements to a certain extent.
  • the scaffolding can also serve as a working platform, so that the alignment of the rotor can be performed in a perpendicular much easier by fitters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A securing device for securing a rotor of a turbomachine against tilting is provided, the rotor being arranged perpendicular in relation to a horizontal plane. The securing device includes a support surface enabling the rotor to be laterally supported in relation to the securing device. The rotor or the tie rod, arranged in an essentially vertical manner, are oriented vertically such that during an alignment, the support surface on which the rotor or the tie rod support, are displaced such that rotor is perpendicular in relation to the horizontal plane.

Description

Beschreibungdescription
Montagevorrichtung zum Zusammensetzen und Zerlegen eines sich aus Rotorscheiben zusammensetzenden Rotors einer StrömungsmaschineMounting device for assembling and disassembling a rotor of rotor disks composed of a turbomachine
Die Erfindung betrifft eine Montagevorrichtung zum Zusammensetzen und Zerlegen eines sich aus Rotorscheiben zusammenset- zenden Rotors einer Strömungsmaschine, welche Rotorscheiben von mindestens einem Zuganker miteinander verspannt sind, umfassend einen auf einem Fundament befestigten Wendebock und eine Sicherungsvorrichtung, welche einen am Wendebock schwenkbar gelagerten, gegenüber einer Horizontalebene des Fundaments quer aufgestellten Rotor gegen Umkippen sichert.The invention relates to a mounting device for assembling and disassembling a rotor of a turbomachine composing rotor of a turbomachine, which rotor discs are clamped together by at least one tie rod, comprising a mounted on a foundation turning block and a securing device which pivotally mounted on the turning block, opposite a Horizontal plane of the foundation transversely erected rotor against tipping secures.
Gasturbinen sowie deren struktureller Aufbau sind allgemein bekannt. Die Rotoren von Gasturbinen können dabei in unterschiedlicher Art und Weise aufgebaut und zusammengesetzt sein. Eine Rotorvariante umfasst eine Vielzahl von aneinanderliegenden Elementen, welche über einen sich zentral durch die Elemente erstreckenden Zuganker verspannt sind. Diese Elemente sind einerseits Rotorscheiben und andererseits Rohrabschnitte, so genannte Hohlwellen, die an den Rotorscheiben anliegen können. Das Verspannen der Rotorscheiben und der Hohlwellen erfolgt mit jeweils endseitig auf dem Zuganker aufgeschraubten Schraubenmuttern, wobei häufig die verdich- terseitig vorgesehene Schraubenmutter als Hohlwelle ausgebildet ist. Die stirnseitig flächig aneinander liegenden Rotor- Scheiben tragen in der Regel an ihren Außenumfängen die Laufschaufeln der Turbine und des Verdichters. Anstelle eines zentralen Zugankers ist es auch bekannt, mehrere dezentrale, außermittige Zuganker zu verwenden.Gas turbines and their structural design are well known. The rotors of gas turbines can be constructed and assembled in different ways. A rotor variant comprises a plurality of adjacent elements, which are braced by a tie rod extending centrally through the elements. On the one hand, these elements are rotor disks and, on the other hand, pipe sections, so-called hollow shafts, which can rest on the rotor disks. The clamping of the rotor disks and the hollow shafts takes place with respective end nuts screwed on the tie rod nuts, often the compressor side provided screw nut is designed as a hollow shaft. The face-side juxtaposed rotor discs usually carry at their outer peripheries the blades of the turbine and the compressor. Instead of a central tie rod, it is also known to use several decentralized, off-center tie rods.
Um einen derartigen mehrteiligen Rotor zusammenzusetzen und zu zerlegen ist ein Montagewerkzeug bekannt, welches im Wesentlichen zwei Lagerböcke umfasst. Die beiden Lagerböcke werden zueinander beabstandet aufgestellt und der Rotor wird auf ihnen abgelegt. Einer der beiden Lagerböcke - der so genannte Wendebock - ist dabei mit einem zwischen Fuß und Auflagefläche angeordnetem Gelenk ausgestattet, welches mit einem Ende des Rotors befestigt wird. Der Rotor wird also so platziert, dass sein beispielsweise verdichterseitiges Ende unmittelbar an dem Gelenk des Wendebocks befestigt werden kann. Der andere Lagerbock stützt dann den Rotor turbinensei- tig ab. Das am Wendebock befestigte Gelenk dient zur Umlagerung des Rotors aus der waagerechten Lage in eine dazu senk- rechte Position. Dazu wird am turbinenseitigen Ende desIn order to assemble and disassemble such a multi-part rotor, an assembly tool is known, which essentially comprises two bearing blocks. The two bearing blocks are placed at a distance from each other and the rotor is placed on them. One of the two bearing blocks - the so-called turning block - is equipped with a joint arranged between foot and bearing surface, which is fastened to one end of the rotor. The rotor is thus placed so that its example compressor side end can be attached directly to the joint of the turning block. The other bracket then supports the rotor on the turbine side. The joint, which is attached to the reversing jack, serves to relocate the rotor from the horizontal position to a vertical position. This is done at the turbine end of the
Rotors eine Anhängemutter auf den Zuganker aufgeschraubt. An die Anhängemutter wird mittels eines Schäkels ein Seil eines Krans befestigt. Während der Kran das turbinenseitige Ende des Rotors anhebt, dreht sich das verdichterseitige Ende um den Drehpunkt des Gelenks. Der Anhebevorgang ist abgeschlossen, wenn der Rotor in einer annähernd senkrechten Position angelangt ist. Dann wird dieser mittels einer Sicherung, welche auch am Wendebock vorgesehen ist, gegen Umkippen gesichert. In der Regel umfasst diese Sicherung einen Blockier- bolzen, der am Wendebock oberhalb des Gelenks vorgesehen ist und das Zurückbewegen des Rotors aus der Senkrechten blockiert. Anschließend wird die Anhängemutter demontiert, wonach dann die eigentlichen Arbeiten am senkrecht aufgestellten Rotor (oder Zuganker) erfolgen können.Rotor screwed on a trailer nut on the tie rod. A rope of a crane is attached to the hanger by means of a shackle. As the crane lifts the turbine end of the rotor, the compressor end rotates about the pivot point of the joint. The lifting process is completed when the rotor has reached an approximately vertical position. Then this is secured by means of a fuse, which is also provided on the turning block against tipping over. As a rule, this lock comprises a locking bolt, which is provided on the turning bracket above the hinge and blocks the return movement of the rotor from the vertical. Then the trailer nut is dismantled, after which the actual work can be done on the vertical rotor (or tie rod).
Für den Zusammenbau des Rotors wird zuerst der Zuganker senkrecht aufgestellt und anschließend die einzelnen Rotorscheiben mittels eines Krans nacheinander von Oben auf den Zuganker aufgefädelt. Anschließend wird eine turbinenseitige Rotormutter aufgeschraubt. Bei der Demontage eines vollständig montierten Rotors wird nach dessen senkrechter Aufstellung die turbinenseitig angeordnete Rotormutter entfernt, wonach die einzelnen Rotorscheiben dem Zuganker entnommen werden können. Der Rotor umfasst dann im Wesentlichen nur noch den Zuganker.To assemble the rotor, the tie rod is first set up vertically and then the individual rotor discs are threaded successively from above onto the tie rod by means of a crane. Subsequently, a turbine-side rotor nut is screwed. When disassembling a fully assembled rotor, the turbine-side rotor nut is removed after its vertical placement, after which the individual rotor discs can be removed from the tie rod. The rotor then essentially only comprises the tie rod.
Eine ähnliche Aufstellvorrichtung mit einem Wendebock ist aus der deutschen Offenlegungsschrift 24 26 231 bekannt. Zentral unter dem Wendebock ist am Fundament ein erster Anschlag befestigt. Im Unterschied zur vorgenannten Vorrichtung wird nicht das Ende des Rotors am Wendebock befestigt, sondern ein vom Ende beabstandeter Rotorpunkt. Beim Anheben des längeren Rotorabschnittes schwenkt dann der kürzere Rotorabschnitt zum Fundament hin. Der am kürzeren Rotorabschnitt angeordnete Kupplungsflansch liegt nach der senkrechter Aufstellung am ersten Anschlag an, wonach auf der anderen Seite des Flansches dann ein zweiter Anschlag angepasst und über Schrauben mit dem ersten Anschlag zur Sicherung des Rotors gegen Umkippen fest verbunden wird.A similar set-up device with a turning block is known from German Offenlegungsschrift 24 26 231. Central A first stop is fastened to the foundation below the turnbuckle. In contrast to the aforementioned device, the end of the rotor is not attached to the turning block, but a rotor point spaced from the end. When lifting the longer rotor section then pivots the shorter rotor section towards the foundation. The arranged on the shorter rotor portion coupling flange is located after the vertical installation on the first stop, after which on the other side of the flange then adapted a second stop and firmly connected by screws with the first stop to secure the rotor against tipping.
Aufgabe der vorliegenden Erfindung ist es, eine neue Montagevorrichtung zum Zusammensetzen und zum Zerlegen eines sich aus Rotorscheiben zusammensetzenden Rotors einer Strömungsmaschine anzugeben, mit der eine erdbebensichere Abstützung des senkrecht aufgestellten Rotors erreicht wird.Object of the present invention is to provide a new mounting device for assembling and disassembling a rotor discs composed of rotor of a turbomachine, with an earthquake-proof support of the vertically erected rotor is achieved.
Die Aufgabe wird durch eine Montagevorrichtung mit den Merk- malen des Anspruchs 1 gelöst.The object is achieved by a mounting device with the features of claim 1.
Die Erfindung geht von der Erkenntnis aus, dass eine erdbebensichere Montagevorrichtung erhalten werden kann, wenn der Wendebock und die Sicherungsvorrichtung gegen Umkippen ge- trennt voneinander am Fundament befestigbar sind. Bisher war die Sicherungsvorrichtung entweder am Wendebock vorgesehen, oder vergleichsweise nah am Umschwenkpunkt. Aufgrund dieser Anordnung war nur eine vergleichsweise schwache Sicherung des senkrecht stehenden Rotors möglich, die in Gebieten, bei denen kleinere Erdbeben vergleichsweise häufig auftreten - beispielsweise in Kalifornien oder Neuseeland -, eine sichere Abstützung des zur Montage oder Demontage senkrecht aufgestellten Rotors nicht mehr gewährleisten konnte. Aufgrund dieser Anforderung ist erfindungsgemäß die Verwendung von die Sicherungsvorrichtung tragenden Stützen vorgesehen, welche am Fundament befestigt sind und eine Fundamentfläche aufspannen, in der der Wendebock angeordnet ist. Die Sicherungsvorrichtung wird sozusagen über ein aus Stützen gebildetes Gerüst aufgebockt. Der erfindungsgemäße Wendebock nimmt dann lediglich die Gewichtskräfte des senkrecht aufgestellten Rotors auf und leitet diese in das Fundament weiter. Eine Drehmomentbelastung der Wendebockbefestigung, wie beim Stand der Technik, wird somit vermieden. Folglich kann dieser vergleichsweise einfach ausgebildet sein. Die von dem Rotor seitlich auf die Sicherungsvorrichtung wirkenden Kräfte können über die in der Umgebung des Wendebocks befestigten Stützen abseits des Wendebocks in das Fundament geleitet werden.The invention is based on the recognition that an earthquake-proof mounting device can be obtained if the turning block and the securing device can be fastened to the foundation separately from tipping over one another. So far, the safety device was either provided on the turning block, or relatively close to the Umschwenkpunkt. Because of this arrangement, only a comparatively weak securing of the vertical rotor was possible, which could no longer ensure safe support of the vertically erected for mounting or dismounting rotor in areas where smaller earthquakes occur relatively frequently - for example in California or New Zealand. Due to this requirement, the use of the securing device supporting supports is provided according to the invention, which are fixed to the foundation and span a foundation surface in which the turning block is arranged. The safety device is, so to speak, via a scaffold made up of supports jacked. The turn block according to the invention then absorbs only the weight forces of the vertically erected rotor and forwards them into the foundation. A torque load of the turn block mounting, as in the prior art, is thus avoided. Consequently, this can be made relatively simple. The forces acting laterally on the safety device from the rotor can be conducted into the foundation beyond the turnbuckles via the supports fastened in the vicinity of the turnbuckle.
Weiter ist der Abstand zwischen dem auf das Fundament projizierten Abstützpunkt des Rotors und den ebenso projizierten Punkten seiner seitlichen Abstützung, welches ein Umkippen des Rotors um die Drehachse des Gelenks verhindert, signifi- kant vergrößert durch die Verwendung von vorzugsweise vierFurther, the distance between the supporting point of the rotor projected onto the foundation and the likewise projected points of its lateral support, which prevents the rotor from tipping over the axis of rotation of the joint, is significantly increased by the use of preferably four
Stützen. Mit anderen Worten: der auf der vertikalen Höhe des Fundaments bestimmte Abstand zwischen dem zentralen Befestigungspunkt des Rotors am Wendebock und dem Punkt seiner seitlichen Abstützung ist signifikant vergrößert, wodurch die von der Sicherungsvorrichtung aufzunehmenden und von den Stützen abzuleitenden seitlichen Abstützkräften vergleichsweise klein gehalten werden können.Support. In other words, the distance between the central attachment point of the rotor at the turnbuckle and the point of its lateral support determined at the vertical height of the foundation is significantly increased, whereby the lateral support forces to be absorbed by the securing device and to be derived from the supports can be kept comparatively small.
Zudem kann durch die Konstruktion von zentral angeordnetem Wendebock und den diesen am Fundament punktuell umgebendenIn addition, by the construction of centrally arranged turning block and this at the foundation selectively surrounding
Stützen eine leichtbauende Montagevorrichtung ermöglicht werden .Supports a lightweight mounting device to be enabled.
Durch die Trennung von Abstützung des Rotors im Wendebock und der Sicherung des Rotors gegen Umkippen mittels der Sicherungsvorrichtung können nun von dem Rotor ausgehende größere seitliche wirkenden Kräfte und Momente, welche beispielsweise bei einem vergleichsweise schwächeren Erdbeben auftreten, von der Sicherungsvorrichtung aufgenommen und in das Fundament abgeleitet werden, ohne dass dabei der senkrecht aufgestellte Rotor umzukippen droht oder tatsächlich umkippt. Die Aufnahme der Kräfte zur seitlichen Abstützung erfolgt dabei auf eine Höhe - bezogen auf die Fundamentebene - welche wesentlich größer ist als die Höhe der Drehachse des Gelenks des Wendebocks, an der der Rotor angeschlagen ist.Due to the separation of support of the rotor in the turning block and the securing of the rotor against tipping by means of the securing device can now outgoing from the rotor larger lateral forces and moments, which occur for example in a comparatively weaker earthquake, taken from the safety device and discharged into the foundation without the vertical rotor threatening to topple over or actually overturn. The absorption of the forces for lateral support is carried out at a height - based on the foundation level - which essential is greater than the height of the axis of rotation of the joint of the turning block on which the rotor is struck.
Durch die Erfindung kann somit eine besonders sichere und zu- verlässige Montagevorrichtung zum Zusammensetzen und Zerlegen eines sich aus Rotorscheiben zusammensetzenden Rotors einer Strömungsmaschine angegeben werden.The invention thus provides a particularly reliable and reliable mounting device for assembling and disassembling a rotor composed of rotor disks of a turbomachine.
Die Sicherungsvorrichtung umfasst dabei eine Abstützfläche, an welcher der Rotor anliegt. Vorzugsweise ist die Abstützfläche geringfügig verlagerbar. Insbesondere, wenn der Rotor in die Lotrechte ausgerichtet werden soll, sind die vom Rotor auf die Sicherungsvorrichtung quer zur Normalkraft einwirkenden Kräfte vergleichsweise gering, so dass die Sicherungsvor- richtung dementsprechend angepasst dimensioniert werden kann. Des Weiteren ermöglicht der lotrecht stehende Rotor eine besonders einfache Auf- bzw. Abfädelung von Rotorscheiben auf den Zuganker. Sofern die Abstützfläche, an welcher sich der Rotor anlegt, in einer Ebene annähernd parallel zur Horizon- talebene verlagerbar ist, kann der bereits schon annähernd senkrecht stehende Rotor so ausgerichtet werden, dass lediglich Balancekräfte von der Sicherungsvorrichtung und dessen Gerüst aufgenommen werden müssen. Die gesamte Gewichtskraft des Rotors wird in diesem Fall dann von dem Wendebock getra- gen und in das Fundament geleitet.The securing device in this case comprises a support surface on which the rotor rests. Preferably, the support surface is slightly displaceable. In particular, when the rotor is to be aligned in the perpendicular, the forces acting on the securing device transversely to the normal force from the rotor are comparatively small, so that the securing device can be dimensioned accordingly. Furthermore, the vertical rotor allows a particularly simple threading or removal of rotor disks on the tie rod. If the support surface against which the rotor engages can be displaced in a plane approximately parallel to the horizontal plane, the already approximately perpendicular rotor can be aligned such that only balance forces must be absorbed by the securing device and its frame. In this case, the entire weight of the rotor is then borne by the turning block and directed into the foundation.
Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben .Advantageous embodiments are specified in the subclaims.
In einer zweckmäßigen Ausgestaltung ist die Sicherungsvorrichtung über vier auf dem Fundament im Rechteck angeordnete Stützen oberhalb des Fundaments angeordnet.In an expedient embodiment, the securing device is arranged above the foundations on four supports arranged on the foundation in the rectangle.
Die Sicherungsvorrichtung muss nur vergleichsweise geringe Kräfte aufnehmen, wenn sie mindestens eine Abstützfläche umfasst, durch welche der zur Horizontalebene quer aufgestellte Rotor seitlich abstützbar ist, und bei der der vertikale Ab- stand zwischen einem Gelenk des Wendebocks und der darüber angeordneten Abstützfläche 2 m bis 3 m beträgt.The securing device only has to absorb comparatively small forces if it comprises at least one support surface, by means of which the rotor set up transversely to the horizontal plane can be supported laterally, and in which the vertical deviation stood between a joint of the turning block and the supporting surface arranged above 2 m to 3 m.
In einer vorteilhaften Ausgestaltung der Sicherungsvorrich- tung weist diese oberhalb des Fundamentes eine auf mehreren Stützen und Streben aufgebockte Plattform oder Arbeitsbühne auf. Die Plattform dient beispielsweise als Arbeitsplattform für Monteure, welche die Ausrichtung des Rotors in die Lotrechte vornehmen. Insbesondere dann ist es von Vorteil, wenn die Abstützfläche auf der Höhe der Plattform, beispielsweise in deren Boden, vorgesehen ist. Die eine oder mehrere Abstützflächen, welche an horizontal verlagerbaren Elementen vorgesehen sind, können dann mit der Plattform über die Ver- schraubungen oder der Hydraulikzylinder verbunden sein.In an advantageous embodiment of the securing device, it has a platform or working platform jacked up on a plurality of supports and struts above the foundation. The platform serves, for example, as a work platform for fitters, who make the alignment of the rotor in the vertical. In particular, it is advantageous if the support surface at the height of the platform, for example in the bottom, is provided. The one or more support surfaces, which are provided on horizontally displaceable elements, can then be connected to the platform via the screw connections or the hydraulic cylinders.
Gemäß einer weiteren vorteilhaften Ausgestaltung ist der Wendebock derartig ausgebildet, dass er die Gewichtskraft des Rotors kreisflächig in das Fundament weiterleitet. Hierdurch kann eine punktuelle, ggf. unzulässig hohe Gewichtsbelastung des Fundaments weitgehend vermieden werden. Vielmehr wird die Gewichtsbelastung des Rotors von Wendebock auf die kreisförmige Verbindungsfläche von Wendebock und Fundament verteilt.According to a further advantageous embodiment of the turning block is designed such that it passes the weight of the rotor circular area in the foundation. As a result, a punctual, possibly unacceptably high weight load of the foundation can be largely avoided. Rather, the weight load of the rotor is distributed by turning block on the circular connecting surface of turning block and foundation.
Die Erfindung wird anhand einer Zeichnung erläutert. Es zeigen schematisch und in nicht maßstäblicher Weise:The invention will be explained with reference to a drawing. It shows schematically and not to scale:
FIG 1 die Montagevorrichtung zum Zusammensetzen und1 shows the assembly device for assembling and
Zerlegen eines Rotors mit parallel zur Horizontal- ebene (waagerecht) angeordnetem Rotor,Disassembly of a rotor with rotor arranged parallel to the horizontal plane (horizontal),
FIG 2 die Montagevorrichtung gemäß FIG 1 mit senkrecht aufgestelltem Rotor,2 shows the mounting device according to FIG 1 with vertical rotor,
FIG 3 die Draufsicht auf die Sicherungsvorrichtung bei geöffneter Aufnahme und FIG 4 die Draufsicht auf die Sicherungsvorrichtung mit eingelegtem Rotor.3 shows the top view of the securing device with open recording and 4 shows the top view of the securing device with inserted rotor.
In den Figuren sind identische Bauteile mit gleichen Bezugs- zeichen versehen.In the figures, identical components are provided with the same reference numerals.
In FIG 1 ist ein auf zwei Lagerböcken 11 abgelegter Rotor 13 einer schweren stationären Gasturbine dargestellt. Der Rotor 13 umfasst einen Zuganker 15, der sich zentral durch eine Vielzahl von Turbinenscheiben 17 und Verdichterscheiben 19 erstreckt. Im dargestellten Beispiel ist das verdichtersei- tige Ende des Rotors 13 links dargestellt. Die Turbinenscheiben 17 und die Verdichterscheiben 19 sind Rotorscheiben 21 und tragen an ihren äußeren Enden Laufschaufeln, die einem kompressiblen Strömungsmedium der Gasturbine aussetzbar sind.In Figure 1, a stored on two bearing blocks 11 rotor 13 a heavy stationary gas turbine is shown. The rotor 13 includes a tie rod 15 which extends centrally through a plurality of turbine disks 17 and compressor disks 19. In the example shown, the compressor-side end of the rotor 13 is shown on the left. The turbine disks 17 and the compressor disks 19 are rotor disks 21 and carry at their outer ends blades which can be exposed to a compressible flow medium of the gas turbine.
Zum Verspannen der Rotorscheiben 21 ist am verdichterseitigen Ende 33 des Rotors 13 eine vordere Hohlwelle 22 auf den Zug- anker 15 aufgeschraubt. Turbinenseitig ist eine Schraubenmutter 24 vorgesehen.To clamp the rotor disks 21, a front hollow shaft 22 is screwed onto the tension anchor 15 at the compressor-side end 33 of the rotor 13. Turbine side, a nut 24 is provided.
Um den modularen Rotor 13 der Gasturbine in seine Einzelteile zu zerlegen, ist neben den beiden Lagerböcken 11 eine Monta- gevorrichtung 23 vorgesehen, welche rotorendseitig angeordnet ist. Die Montagevorrichtung 23 umfasst einen Wendebock 27, der auf einem Fundament 29 befestigt ist. Der Wendebock 27 ist zu den beiden Lagerböcken 11 fluchtend aufgestellt und weist dabei an seiner Spitze ein Gelenk 31 auf, welches mit dem verdichterseitigen Ende 33 des Rotors 13 verbunden ist. Der Rotor 13 ist dabei um eine zur Horizontalebene 47 parallele Drehachse des Gelenks 31 drehbar. Ferner umfasst das Gelenk 31 eine wälzgelagerte Aufnahme für einen um eine senkrechte Achse 35 drehbaren Drehteller 37. Auf der senkrechten Achse 35 liegt außerdem der Rotorabstützpunkt. Am turbinenseitigen Ende 39 des Rotors 13 ist eine Anhängemutter 41 montiert, an der mittels eines Schäkels das Seil eines Krans angeschlagen werden kann.In order to disassemble the modular rotor 13 of the gas turbine into its individual parts, a mounting device 23 is provided in addition to the two bearing blocks 11, which is arranged rotorendseitig. The mounting device 23 comprises a turning bracket 27 which is mounted on a foundation 29. The turning block 27 is set up in alignment with the two bearing blocks 11 and has at its tip a joint 31 which is connected to the compressor-side end 33 of the rotor 13. The rotor 13 is rotatable about an axis of rotation parallel to the horizontal plane 47 of the joint 31. Furthermore, the joint 31 comprises a roller-mounted receptacle for a rotatable about a vertical axis 35 turntable 37. On the vertical axis 35 is also the Rotorabstützpunkt. At the turbine-side end 39 of the rotor 13, a trailer nut 41 is mounted on the means of a shackle the rope of a crane can be struck.
Die Montagevorrichtung 23 umfasst des Weiteren eine als Gerüst 43 ausgebildete Sicherungsvorrichtung 45, welche vom Wendebock 27 getrennt im Fundament 29 verankert ist.The mounting device 23 further comprises a securing device 45 designed as a frame 43, which is anchored separately in the foundation 29 by the turning block 27.
Das Gerüst 43 umfasst eine auf vier senkrechten Stützen 64 aufgebockte Plattform 49 oder Arbeitsbühne. Zur Versteifung des Gerüsts 43 sind an jeder Seitenkante des Gerüsts 43 weitere sich quer zu den Stützen 64 erstreckende Streben 65 vorgesehen, die die fundamentseitigen Enden der Stützen 64 mit der Plattform 49 zusätzlich verbinden.The framework 43 comprises a platform 49 or work platform jacked up on four vertical supports 64. For stiffening the framework 43, further struts 65 extending transversely to the supports 64 are provided on each side edge of the framework 43, which additionally connect the foundation-side ends of the supports 64 to the platform 49.
Damit der Rotor 13 in das Gerüst 43 und in die Sicherungsvorrichtung 45 eingeschwenkt werden kann, kann ein Teil der Plattform 49 und die darunter angeordneten Streben 65 aus dem Schwenkbereich des Rotors 13 herausbewegt werden. Die Platt- form 49 und die Sicherungsvorrichtung 45 weisen dann eine geöffnete Aufnahme auf (vgl. FIG 3) .In order for the rotor 13 to be pivoted into the frame 43 and into the securing device 45, part of the platform 49 and the struts 65 arranged underneath can be moved out of the pivoting range of the rotor 13. The platform 49 and the securing device 45 then have an opened receptacle (see FIG.
Durch das Anheben des turbinenseitigen Endes 39 des Rotors 13 mit dem Kran wird dieser aus den beiden Lagerböcken 11 geho- ben, wobei das verdichterseitige Ende des Rotors 13 sich um die Drehachse des Gelenks 31 dreht. Bei geöffneter Aufnahme kann dann der Rotor 13 aus seiner horizontalen Lage (FIG 1) in die vertikale Lage (FIG 2) gewendet werden, wonach dieser mittels der Sicherungsvorrichtung 45 gegen Umkippen gesichert wird. Hierzu wird die Aufnahme geschlossen. Anschließend befindet sich der Rotor 13 in der in FIG 2 gestellten Lage.By raising the turbine-side end 39 of the rotor 13 with the crane, it is lifted from the two bearing blocks 11, wherein the compressor-side end of the rotor 13 rotates about the axis of rotation of the joint 31. When the receptacle is open, the rotor 13 can then be turned from its horizontal position (FIG. 1) into the vertical position (FIG. 2), after which it is secured against overturning by means of the securing device 45. For this purpose, the recording is closed. Subsequently, the rotor 13 is in the position shown in FIG 2.
Die gesamte Gewichtskraft des bei stationären Gasturbinen vergleichsweise schweren Rotors 13 lastet dann auf dem Wende- bock 27, wohingegen das Gerüst 43 das Umkippen des Rotors 13 mit vergleichsweise geringen Kräften verhindern kann. Die geringste Kraft ist erforderlich, wenn der Rotor 13 lotrecht ausgerichtet ist und die Symmetrieachse 46 des Rotors 13 mit der Achse 35 des Drehtellers 37 übereinstimmt.The entire weight of the rotor 13, which is comparatively heavy in the case of stationary gas turbines, then bears on the turning block 27, whereas the frame 43 can prevent the rotor 13 from tipping over with comparatively small forces. The least force is required when the rotor 13 is vertical is aligned and the axis of symmetry 46 of the rotor 13 coincides with the axis 35 of the turntable 37.
Aufgrund des vergleichsweise großen Abstands zwischen Gelenk 31 und der seitlichen Abstützung des Rotors 13 auf Höhe der Plattform 49 kann eine besonders zuverlässige und zudem auch erdbebensichere seitliche Abstützung des Rotors 13 angegeben werden. Erdbebensicher heißt in diesem Umfang, dass die bei vergleichsweise schwachen Erdbeben mit einer vergleichsweise geringen Stärke auftretenden Beschleunigungskräfte auf denDue to the comparatively large distance between joint 31 and the lateral support of the rotor 13 at the level of the platform 49, a particularly reliable and also earthquake-resistant lateral support of the rotor 13 can be specified. To this extent, earthquake safety means that the acceleration forces that occur in comparatively weak earthquakes with a comparatively low level of force on the
Rotor 13 in der Größenordnung von ca. H g (Ig = einfache Erdbeschleunigung) von der Sicherungsvorrichtung 45 aufgefangen und über die Plattform 49 und die Streben 65 ins Fundament 29 abgeleitet werden können.Rotor 13 in the order of about H g (Ig = simple acceleration of gravity) collected by the securing device 45 and can be derived via the platform 49 and the struts 65 into the foundation 29.
Die Draufsicht auf die Plattform 49 der Sicherungsvorrichtung 45 zeigen die Figuren 3 und 4, wobei FIG 3 die zur Aufnahme des Rotors 13 geöffnete Plattform 49 zeigt und FIG 4 die verschlossene Plattform 49 mit zentral angeordnetem Zuganker 15 und vorderer Hohlwelle 22 gemäß der Schnittansicht IV-IV der FIG 2. In der Plattform 49 der Sicherungsvorrichtung 45 ist eine zentral angeordnete Öffnung 51 vorgesehen, in welcher ein axialer Abschnitt der Hohlwelle 22 eingelegt werden kann. Die Öffnung 51 wird von einem segmentierten Ring 53 umschlos- sen, dessen erstes Segment 55 einen Segmentbogen von ungefähr 270° und dessen zweites Segment 57 einen Segmentbogen von ca. 90° umfasst. Das zweite Ringsegment 57 ist gegenüber dem ersten Ringsegment 55 um eine Drehachse 59 verschwenkbar, was zum einfachen und schnellen Schließen und Öffnen des Rings 53 dient (vgl. FIG 4) . Beide Segmente 55, 57 weisen je eine nach innen gerichtete Abstützfläche 61 auf, die jeweils an einem Abschnitt der Mantelfläche des Rotors 13 bzw. des Zugankers 15 anlegbar ist.The plan view of the platform 49 of the securing device 45 are shown in FIGS. 3 and 4, FIG. 3 showing the platform 49 which is open to receive the rotor 13, and FIG. 4 shows the closed platform 49 with centrally arranged tie rod 15 and front hollow shaft 22 according to the sectional view IV. IV of FIG 2. In the platform 49 of the securing device 45, a centrally disposed opening 51 is provided, in which an axial portion of the hollow shaft 22 can be inserted. The opening 51 is surrounded by a segmented ring 53 whose first segment 55 comprises a segment arc of approximately 270 ° and whose second segment 57 comprises a segment arc of approximately 90 °. The second ring segment 57 is pivotable relative to the first ring segment 55 about an axis of rotation 59, which serves for easy and quick closing and opening of the ring 53 (see FIG. Both segments 55, 57 each have an inwardly directed support surface 61, which can each be applied to a portion of the lateral surface of the rotor 13 and the tie rod 15.
Der Ring 53 liegt in einer Ebene parallel zur Horizontalebene 47, also parallel zum Fundament 29, und kann mittels einer ihn tragenden Hilfsvorrichtung innerhalb dieser Ebene zur lotrechten Ausrichtung des Rotors 13 verlagert werden. Die Hilfsvorrichtung umfasst beispielsweise mehrere an der Plattform 49 befestigte Verschraubungen 63. Jede dieser Verschrau- bung 63 weist eine Schraubenachse 67 auf, die ebenfalls in der Ebene parallel zur Horizontalebene 47 liegt. Die Ver- schraubungen 63 sind bei geschlossenem Ring 53 strahlenförmig angeordnet, so dass sich deren Schraubenachsen 67 in einem virtuellen Mittelpunkt 66 treffen. Anstelle der Verschraubungen 63 kann auch jeweils eine Hydraulikanordnung mit bewegbaren Kolbenstange vorgesehen sein, um den Ring 53 seinerseits seitlich abzustützen und dabei den Rotor 13 (oder auch Zuganker 15) gegenüber dem Wendebock 27 derart auszurichten, dass von dieser von einer annähernd senkrechten Ausrichtung in eine lotrechte Ausrichtung verlagert werden kann.The ring 53 lies in a plane parallel to the horizontal plane 47, ie parallel to the foundation 29, and can be displaced by means of an auxiliary device supporting it within this plane for vertical alignment of the rotor 13. The Auxiliary device comprises, for example, a plurality of screw connections 63 fastened to the platform 49. Each of these screw connections 63 has a screw axis 67 which likewise lies in the plane parallel to the horizontal plane 47. The screwed connections 63 are arranged radially in the closed ring 53, so that their screw axes 67 meet in a virtual center 66. Instead of the screw 63 can also be provided in each case a hydraulic arrangement with a movable piston rod to laterally support the ring 53 and thereby align the rotor 13 (or tie rod 15) relative to the turn block 27 such that of this from an approximately vertical orientation in a vertical alignment can be shifted.
Anstelle der Verschraubung oder anstelle von Hydraulikzylindern kann auch der Ring 53 in einem zweifach geschachtelten Excenter gelagert sein, so dass die Öffnung 51 gegenüber der Achse 35 des Wendebocks 27 beliebig ausrichtbar ist.Instead of screwing or instead of hydraulic cylinders and the ring 53 may be mounted in a double-nested eccentric, so that the opening 51 relative to the axis 35 of the turning block 27 is arbitrarily alignable.
Auch der Ring 53 ist insgesamt nur optional. Es ist beispielsweise auch möglich, dass die seitliche Abstützung des Rotors 13 unmittelbar von den Verschraubungen 63 oder unmittelbar von den Kolbenstangen der Hydraulikzylinder erfolgt. Die Abstützflächen 61 wären dann an den nach innen ragenden freien Enden 69 der Verschraubungen 63 oder den nach innen ragenden freien Enden der Kolbenstangen der Hydraulikzylindern angeordnet, welche dann unmittelbar an die Mantelfläche des Rotors 13 anlegbar wären.Also, the ring 53 is only optional. For example, it is also possible for the lateral support of the rotor 13 to take place directly from the screw connections 63 or directly from the piston rods of the hydraulic cylinders. The support surfaces 61 would then be arranged on the inwardly projecting free ends 69 of the screw 63 or the inwardly projecting free ends of the piston rods of the hydraulic cylinders, which would then be applied directly to the lateral surface of the rotor 13.
Damit der Rotor 13 beim Anheben seines turbinenseitigen Endes 39 in die Öffnung 51 eingeschwenkt werden kann, ist der Ring 53 und die Plattform 49 zuvor zu öffnen. Hierzu ist vorgesehen, dass das zweite Segment 57 des Rings 53 um die Drehachse 59 gemäß dem Pfeil 60 von einer geschlossenen Position in eine offene Position (dargestellt) schwenkbar ist. In gleicher Art und Weise sind die in der FIG 3 unten dargestellten Streben 65 und das Geländer 70 der Arbeitsbühne von der Plattform 49 gemäß dem Pfeil 62 weggeklappt, so dass insgesamt die Aufnahme geöffnet ist.In order for the rotor 13 to be pivoted into the opening 51 when lifting its turbine-side end 39, the ring 53 and the platform 49 must first be opened. For this purpose, it is provided that the second segment 57 of the ring 53 is pivotable about the rotation axis 59 according to the arrow 60 from a closed position to an open position (shown). In the same manner, the struts 65 and the railing 70 of the working platform shown in the bottom of FIG. 3 are of the Platform 49 folded away according to the arrow 62, so that a total of the recording is open.
FIG 4 zeigt die Draufsicht auf die Sicherungsvorrichtung 45 mit dem annähernd vollständig geschlossenen Ring 53. Der Ring 53 umgreift die Hohlwelle 22, so dass die Abstützflächen 61 an der Mantelfläche der Hohlwelle 22 anliegen. Der Ring 53 ist über die einzelnen Verschraubungen 63 in der Ebene parallel zum Fundament 29 verschiebbar, so dass der Mittelpunkt des Rings 53 und somit der Mittelpunkt des Zugankers 15 gegenüber dem Wendebock 27 und somit gegenüber dem zentralen Rotorabstützpunkt geringfügig verlagerbar ist, um den Rotor 13 in eine lotrechte Ausrichtung zu bringen.4 shows the top view of the securing device 45 with the approximately completely closed ring 53. The ring 53 surrounds the hollow shaft 22, so that the support surfaces 61 abut against the lateral surface of the hollow shaft 22. The ring 53 is displaceable over the individual screw 63 in the plane parallel to the foundation 29, so that the center of the ring 53 and thus the center of the tie rod 15 relative to the turn block 27 and thus relative to the central Rotorabstützpunkt is slightly displaced to the rotor thirteenth in a vertical orientation.
Insgesamt kann durch die konstruktive Trennung von Wendebock und Sicherungsvorrichtung die letztgenannte größere, vom Rotor ausgehende Kräfte und Momente aufnehmen und ins Fundament weiterleiten als eine Sicherungsvorrichtung, welche unmittelbar am Wendebock angebracht ist. Größere Kräfte können beispielsweise bei vergleichsweise kleineren Erdbeben auftreten, so dass nun die erfindungsgemäße Vorrichtung Erdbebenanforderungen in einem gewissen Maße erfüllt. Außerdem kann das Gerüst auch als Arbeitsplattform dienen, so dass die Ausrichtung des Rotors in eine Lotrechte wesentlich einfacher von Monteuren ausgeführt werden kann. Overall, by the structural separation of turning block and safety device, the latter larger, outgoing from the rotor forces and moments and forward into the foundation as a backup device, which is mounted directly on the turning block. Larger forces can occur, for example, with comparatively smaller earthquakes, so that now the device according to the invention satisfies earthquake requirements to a certain extent. In addition, the scaffolding can also serve as a working platform, so that the alignment of the rotor can be performed in a perpendicular much easier by fitters.

Claims

Patentansprüche claims
1. Montagevorrichtung (23) zum Zusammensetzen und Zerlegen eines sich aus Rotorscheiben (21) zusammensetzenden RotorsAn assembly device (23) for assembling and disassembling a rotor composed of rotor disks (21)
(13) einer Strömungsmaschine, welche Rotorscheiben (21) von mindestens einem Zuganker (15) miteinander verspannt sind, umfassend: ein auf einem Fundament (29) befestigten Wendebock (27) und eine Sicherungsvorrichtung (45), durch welche Sicherungsvorrichtung (45) ein am Wendebock (27) schwenkbar gelagerten, gegenüber einer Horizontalebene (47) des Fundaments (29) quer aufgestellten Rotor (13) gegen Umkippen sicherbar ist, wobei die Sicherungsvorrichtung (45) vom Wendebock (27) getrennt am Fundament (29) befestigbar ist, dadurch gekennzeichnet, dass die Sicherungsvorrichtung (45) mittels mehrerer Stützen (64) am Fundament (29) befestigt und der Wendebock (27) innerhalb der von den Stützen aufgespannten Fundamentfläche angeordnet ist.(13) a turbomachine, which rotor discs (21) of at least one tie rod (15) are clamped together, comprising: on a foundation (29) fixed turning block (27) and a securing device (45), through which securing device (45) on the turn block (27) pivotally mounted, relative to a horizontal plane (47) of the foundation (29) transversely mounted rotor (13) is secured against tipping over, wherein the securing device (45) from the turning block (27) separately fastened to the foundation (29), characterized in that the securing device (45) by means of several supports (64) attached to the foundation (29) and the turning block (27) is disposed within the plane defined by the supports foundation surface.
2. Montagevorrichtung (23) nach Anspruch 1, bei der die Sicherungsvorrichtung (45) über vier auf dem Fundament (29) im Rechteck angeordnete Stützen (64) oberhalb des Fundaments (29) angeordnet ist.2. Mounting device (23) according to claim 1, wherein the securing device (45) via four on the foundation (29) arranged in the rectangle supports (64) above the foundation (29) is arranged.
3. Montagevorrichtung (23) nach Anspruch 1 oder 2, bei der die Sicherungsvorrichtung (45) mindestens eine Ab- Stützfläche (61) umfasst, durch welche der zur Horizontalebene (47) quer aufgestellte Rotor (13) seitlich abstützbar ist, und bei der der vertikale Abstand zwischen einem Gelenk (31) des Wendebocks (27) und der darüber angeordneten Abstütz- fläche (61) 2 m bis 3 m beträgt. 3. Mounting device (23) according to claim 1 or 2, wherein the securing device (45) comprises at least one Ab support surface (61) through which the horizontal plane (47) transversely mounted rotor (13) is supported laterally, and in the the vertical distance between a joint (31) of the turning block (27) and the supporting surface (61) arranged above it is 2 m to 3 m.
4. Montagevorrichtung (23) nach Anspruch 1, 2 oder 3, bei der die Stützen (64) eine Plattform (49) tragen.4. Mounting device (23) according to claim 1, 2 or 3, wherein the supports (64) carry a platform (49).
5. Montagevorrichtung (23) nach Anspruch 4, bei der die Abstützfläche (61) auf der Höhe der Plattform (49) vorgesehen ist.5. Mounting device (23) according to claim 4, wherein the support surface (61) at the height of the platform (49) is provided.
6. Montagevorrichtung (23) nach einem der Ansprüche 4 bis 5, bei der die Plattform (49) als Arbeitsbühne für Monteure ausgebildet ist .6. Mounting device (23) according to one of claims 4 to 5, wherein the platform (49) is designed as a working platform for fitters.
7. Montagevorrichtung (23) nach einem der vorangehenden Ansprüche, bei der der Wendebock (27) die Gewichtskraft des Rotors (13) kreisflächig in das Fundament (29) weiterleitet. 7. Mounting device (23) according to any one of the preceding claims, wherein the turning block (27) the weight of the rotor (13) circular area in the foundation (29) passes.
EP20080735742 2007-04-16 2008-04-03 Assembly device for assembling and disassembling a rotor of a turbomachine consisting of rotor disks Active EP2134928B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL08735742T PL2134928T3 (en) 2007-04-16 2008-04-03 Assembly device for assembling and disassembling a rotor of a turbomachine consisting of rotor disks
EP20080735742 EP2134928B1 (en) 2007-04-16 2008-04-03 Assembly device for assembling and disassembling a rotor of a turbomachine consisting of rotor disks

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP20070007681 EP1983161A1 (en) 2007-04-16 2007-04-16 Safety device for protection of a rotor of a fluid flow engine installed at right angles to the horizontal plane against overturning and mounting device
PCT/EP2008/053993 WO2008125507A1 (en) 2007-04-16 2008-04-03 Assembly device for assembling and disassembling a rotor of a turbomachine consisting of rotor disks
EP20080735742 EP2134928B1 (en) 2007-04-16 2008-04-03 Assembly device for assembling and disassembling a rotor of a turbomachine consisting of rotor disks

Publications (2)

Publication Number Publication Date
EP2134928A1 true EP2134928A1 (en) 2009-12-23
EP2134928B1 EP2134928B1 (en) 2011-05-25

Family

ID=38436746

Family Applications (3)

Application Number Title Priority Date Filing Date
EP20070007681 Withdrawn EP1983161A1 (en) 2007-04-16 2007-04-16 Safety device for protection of a rotor of a fluid flow engine installed at right angles to the horizontal plane against overturning and mounting device
EP08735741.4A Not-in-force EP2134927B1 (en) 2007-04-16 2008-04-03 Securing device for securing a rotor of a turbomachine counter to tilting, said rotor being arranged perpendicular to a horizontal plane and method for the alignment thereof
EP20080735742 Active EP2134928B1 (en) 2007-04-16 2008-04-03 Assembly device for assembling and disassembling a rotor of a turbomachine consisting of rotor disks

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP20070007681 Withdrawn EP1983161A1 (en) 2007-04-16 2007-04-16 Safety device for protection of a rotor of a fluid flow engine installed at right angles to the horizontal plane against overturning and mounting device
EP08735741.4A Not-in-force EP2134927B1 (en) 2007-04-16 2008-04-03 Securing device for securing a rotor of a turbomachine counter to tilting, said rotor being arranged perpendicular to a horizontal plane and method for the alignment thereof

Country Status (7)

Country Link
US (2) US9003656B2 (en)
EP (3) EP1983161A1 (en)
JP (2) JP4948644B2 (en)
AT (1) ATE510998T1 (en)
ES (1) ES2365375T3 (en)
PL (1) PL2134928T3 (en)
WO (2) WO2008125506A1 (en)

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Also Published As

Publication number Publication date
EP2134927A1 (en) 2009-12-23
PL2134928T3 (en) 2011-10-31
JP2010523901A (en) 2010-07-15
US9003656B2 (en) 2015-04-14
ATE510998T1 (en) 2011-06-15
US20100139064A1 (en) 2010-06-10
ES2365375T3 (en) 2011-10-03
US8667678B2 (en) 2014-03-11
WO2008125506A1 (en) 2008-10-23
EP2134927B1 (en) 2017-03-08
WO2008125507A1 (en) 2008-10-23
EP2134928B1 (en) 2011-05-25
EP1983161A1 (en) 2008-10-22
JP4937408B2 (en) 2012-05-23
US20100107385A1 (en) 2010-05-06
JP4948644B2 (en) 2012-06-06
JP2010523900A (en) 2010-07-15

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