EP2949886A1 - Verfahren und vorrichtung zur montage und demontage einer turbinenkomponente - Google Patents

Verfahren und vorrichtung zur montage und demontage einer turbinenkomponente Download PDF

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Publication number
EP2949886A1
EP2949886A1 EP15166252.5A EP15166252A EP2949886A1 EP 2949886 A1 EP2949886 A1 EP 2949886A1 EP 15166252 A EP15166252 A EP 15166252A EP 2949886 A1 EP2949886 A1 EP 2949886A1
Authority
EP
European Patent Office
Prior art keywords
inner structure
cage
interface
main cage
main
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.)
Withdrawn
Application number
EP15166252.5A
Other languages
English (en)
French (fr)
Inventor
Damir Golubic
Davide Aratori
Daniel Seng
Marc Rauch
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.)
Ansaldo Energia Switzerland AG
Original Assignee
Alstom Technology 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 Alstom Technology AG filed Critical Alstom Technology AG
Priority to EP15166252.5A priority Critical patent/EP2949886A1/de
Publication of EP2949886A1 publication Critical patent/EP2949886A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • F01D25/285—Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • 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
    • 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
    • Y10T29/49323—Assembling fluid flow directing devices, e.g., stators, diaphragms, nozzles

Definitions

  • the present invention relates to a replacing system for large parts or components of a turbine. It is applied for removing or mounting turbine components to inspect or repair these. Further, it relates to a method for removing or mounting turbine components.
  • Turbine part or components need to be removed for inspection, repairment or replacement of the parts or components.
  • Such components can for example be burners of a gas turbine for thermal power generation.
  • Burners are typically arranged radially at equal intervals at the middle part of the main body of the gas turbine and are inserted and assembled via flanges thereto.
  • Conventionally, such parts are replaced manually by constructing simple scaffolds after removing pipes and other obstacles around the part and by manipulating an overhead traveling crane to sling the part by workers who get on the scaffolds.
  • Parts or components such as burners can be far too heavy to be handled by workers without the use of cranes or other lifting tools. Such a removal and handling is time consuming and it is difficult to maintain an adequate position of the burner during the works in the narrow inner space of the turbine and on the unstable outside scaffolds.
  • US patent 5,921,075 discloses a burner replacement system in which a rail is attached at a circumferential flange connection of two axially adjacent parts of the gas turbine housing, wherein a carriage of complex design can be moved along this rail in order to transport the burner to be installed.
  • the carriage is equipped with an articulation and with a burner carrier which can be displaced in translation such that it can transport individual burners of the gas turbine to their intended location.
  • the transition pipes can also be removed from inside the gas turbine or inserted inside the gas turbine.
  • a disadvantage of the known device is, however, that it is very large and requires a comparatively large maneuvering space around the turbine housing. However, this maneuvering space is not always available.
  • a further disadvantage of the known device is that, on account of the comparatively long and free-ending rod assembly on the carriage, and the considerable weights of the components to be replaced, such as burners and transition pipes, these can only be positioned with insufficient precision with respect to the component opening through which they are to be introduced into the turbine.
  • the object of the present disclosure is to provide a mounting arrangement for installing and removing a component on or in a turbine, which mounting arrangement, on one hand, is compact and, on the other hand, allows exact-fit positioning of the relevant component on or in the turbine. It is a further object of the disclosure to provide a method for mounting and removing a part or component of a turbine, which method can be carried out quickly without a particularly large installation space requirement.
  • a mounting arrangement for a turbine component comprises a base cage, a main cage and an inner structure.
  • the base cage comprises a first face of a casing interface for connection of the base cage to a casing of the turbine, and first face of a main cage interface for connection to the main cage.
  • the main cage comprises a second face of the main cage interface for connection to the base cage, and a first face of an inner structure interface for movable connection of an inner structure to the main cage.
  • the inner structure is arranged at least partly inside the main cage and has a second face of the inner structure interface for moveable connection to the main cage.
  • the inner structure interface is configured for moving the inner structure along a defined trajectory in the main cage. Further, the inner structure comprises a first face of a component interface for holding the turbine component.
  • the first face of the casing interface for connection of the base cage to the casing of the turbine can be a flange for ridged connection of the base cage to the casing.
  • the first and second face of the main cage interface and of the can also be flanges for a ridged connection of the main cage to the base cage.
  • the interfaces can also comprise other connection types like for example clamps, plug connection, bar or framework connections or toothed connections. Any other type of ridged connection is also possible. Also a connection using a strong magnet for fixation of the arrangement to the casing or for fixation of components of the arrangement to each other is conceivable.
  • the main cage and base cage can for example have a cylindrical structure with a tube like outer wall and hollow inside.
  • the cages can also have a framework structure or be constructed based on a cantilever arrangement.
  • a component can for example be a combustor, burner of transition piece of a gas turbine. It can be also be an internal valve of a turbine or any part or assembly of part, which typically is too heavy for manual handling.
  • the trajectory along which the inner structure is moved relative to the main cage can for example be a straight line; it can also be a curved line to move the turbine component around obstacles when inserting it into the casing or removing it from the casing.
  • the mounting arrangement comprises a plurality of base cages.
  • Each base cage has one first face of the casing interface adapted for connection to different contours of different sections of the turbine casing.
  • the inner structure of the mounting arrangement comprises a sledge.
  • the sledge can be moved relative to the main cage and base cage.
  • the inner structure interface comprises a rail roller system which guides the inner structure, in particular the sledge, inside the main cage.
  • the rail roller system has three rail roller pairs.
  • One rail roller pair is in vertically top position of the main cage and two rail roller pairs are in a lower half of the cage spaced apart from a vertical bottom position.
  • the lower rails can be inclined towards the vertical top position.
  • the a rail roller system has a rail roller pair in a vertical bottom position of the main cage and two rail roller pairs in an upper half of the main cage spaced apart from a vertical top position.
  • the upper rails can be inclined towards the vertical bottom position.
  • the inner structure can for example be a y-shaped sledge with a single leg towards the top and two legs angled apart towards the bottom.
  • the rail roller pairs can for example be arranged along a rail extending in an axial direction of the inner structure and rollers pressed against the rail at two or more axial spaced apart locations.
  • the rail roller system comprises two planes spaced apart along a longitudinal axis of the inner structure. In each plane three roller rail pairs in each plane.
  • the longitudinal axis of the inner structure can be adjustable relative to a longitudinal axis of the main cage by adjusting the position of each roller relative to the inner structure in a direction of main load transferred via the respective roller for rollers connected to the inner structure.
  • the longitudinal axis of the inner structure can be adjustable relative to a longitudinal axis of the main cage can be adjusted by adjusting the position of each roller relative to the main cage in a direction of main load transferred via the respective roller for rollers connected to the main cage.
  • roller is mounted to the inner structure respectively to the main cage with a bearing.
  • An adjustment of the roller relative to the inner structure respectively to the main cage can for example be realized by a countered screw fixing a distance of the bearing to the respective structure.
  • the forth interface for connection of the turbine component to the inner structure of the mounting arrangement can comprise two planes spaced apart in axial direction of the inner structure.
  • the second interface comprises at least two toggle clamps for quick locking of the interface, i.e. quick connection of the main cage to the base cage.
  • the main cage comprises a fix point
  • the inner structure comprises a pivot support.
  • a shifting system for moving the inner structure relative to the main cage is arranged between the inner structure and main cage and connected to the fix point and the pivot support.
  • the mounting arrangement comprises a shifting system with screw jack system form moving the inner structure relative to the main cage.
  • the shifting system comprises at least one of a manual handle, an electro motor, or pneumatic motor to drive the shifting system.
  • a method for mounting respectively a method for removing a turbine component from a turbine is an object of the disclosure.
  • the method for mounting, respectively removing a turbine component from a turbine comprises the step of providing a mounting arrangement for a turbine component.
  • a mounting arrangement has a base cage, a main cage and an inner structure.
  • the base cage comprises a first face of a casing interface for connection of the base cage to a casing of the turbine, and first face of a main cage interface for connection to the main cage.
  • the main cage comprises a second face of the main cage interface for connection to the base cage, and a first face of an inner structure interface for movable connection of the inner structure to the main cage.
  • the inner structure is arranged at least partly inside the main cage and has a second face of the inner structure interface for moveable connection to the main cage.
  • the inner structure interface is configured for moving the inner structure along a defined trajectory in the main cage. Further, the inner structure comprises a first face of a component interface for holding the turbine component.
  • the method further comprises the step of disconnecting turbine component from the turbine, respectively connecting the turbine component to the turbine. If the turbine component is connected by a form fit to the turbine no particular steps have to be carried out. If the component is for example bolted the bolts have to be removed, respectively bolted.
  • the Method for mounting further comprises the steps of connecting the first face of the casing interface of the base to the casing of the turbine, connecting the second face of the main cage interface of the main cage to the first face of the main cage interface of the base cage.
  • the main cage is holding the inner structure and the inner structure can be moved inside the main cage such that the component interface of the inner structure can be connected to the turbine component.
  • the turbine component is connected to the inner structure at the component interface, the turbine component is pulled out of the casing by moving the inner structure along a trajectory in the main cage, and finally the main cage holding the inner structure and turbine component is detached from the casing.
  • the main cage can be detached from the base case by opening the main cage interface or the whole mounting arrangement can be detached including the base cage by opening the casing interface.
  • a further embodiment of the method comprises a step of aligning a longitudinal axis of the inner structure with a longitudinal axis of the turbine component before connecting the turbine component to the inner structure at the component interface.
  • the method for mounting further comprises the steps of connecting the first face of the casing interface of the base cage to the casing of the turbine, connecting the turbine component to the inner structure at the component interface, and at least partly pulling the turbine component in the main cage by moving the inner structure along a trajectory in the main cage.
  • an assembly holding the turbine component is obtained which can be easily handled and moved to the turbine and in particular to the vicinity of the base cage.
  • the second face of the main cage interface which is holding the inner structure and the turbine component is connected to the first face of the main cage interface on the base cage, and the turbine component is pushed into the casing by moving the inner structure along a trajectory out of the main cage towards the casing.
  • the turbine component can be fixed in its installed position.
  • the main cage which is holding the inner structure is detached from the casing.
  • the turbine component Before connecting the turbine component to the inner structure it can be disconnected or partly disconnected from the turbine itself. Depending on the turbine component design and accessibility the disconnection can be done after the turbine component is attached to the inner structure.
  • the base cage 1 is used as an adaptor to connect the main cage 2 towards a casing of a turbine (direction towards casing 22). This part is configured to support the complete mounting arrangement 4 with main cage 2, inner structure 3 and a combustor during mounting or removal of a combustor.
  • the base cage 1 has a cylindrical body with first face of a casing interface 5a, b, c on one end of the cylindrical body and a main cage interface 6i at the other end of the cylindrical body.
  • the casing interface 5a, b, c is configured as a flange, which is adapted to the casing section to which it is to be connected.
  • the first face of the main cage interface 6i is a circular flange.
  • the core of the tool consists of a main cage 2 with an inner structure 3.
  • the main cage 2 has a cylindrical body and 2 is a support structure for holding and moving the inner structure 3.
  • the inner structure 3 is movably connected to the main cage 2 via an inner structure interface.
  • the inner structure interface consists of a first face of inner structure interface 17i which in this case consists of three rails which are integrated into the inner structure 3, and a second face of inner structure interface 17ii which in this example consists of six rollers attached to the main cage 2.
  • the main cage 2 comprises a second face of main cage interface 6ii for connection to the base cage 1.
  • the second face of the main cage interface 6ii is a circular flange adopted for connection to the flange of the first face of the main cage interface 6i with a bolt hole pattern to secure and connect the main cage 2 in a defined vertical orientation (direction of gravity). In this position one rail of the a first face of inner structure interface 17i is on a vertical top position inside the main cage 2 while the other two rails are in the lower half of the main cage 2.
  • the Fig. 2a, 2b, and 2c show different variants of base cage 1.
  • the first face of casing interface 5a, 5b, 5c is in each case adopted for connection to different parts of the casing.
  • the bolt hole pattern of the flange from first face of main cage interface 6i is identical and orientated in the same way for all base cages 1a, 1b, 1c when attached and connected to a casing via the first face of casing interface 5a, 5b, and 5c.
  • the main cage 2 can be connected to any of the base cases 1a, 1b, 1c and will in all cases have the same orientation.
  • the inner structure 3 can be arranged vertical (parallel to a line of gravity), i.e. a top of the inner structure 3 is always arranged on top.
  • Fig. 3 shows a cut out of the main cage 2 and inner structure 3 with a shifting system 7 for moving the inner structure 3 relative to the main cage 2.
  • the shifting system 7 is connected to the main cage (2) via a pivot support 8 and connected to the inner structure 3 via a fix point 9.
  • the fix point 9 is configured as spherical joint.
  • the shifting system 7 pushes or pulls the inner structure 3 along the rails of the first face of inner structure interface 17i.
  • the shifting system 7 is configured as a screw jack system.
  • View X of Fig. 3 shows a detail of the shifting system 7.
  • the shifting system 7 In this detail one can see connect hands 16 of the shifting system 7 which allow the connection of a manually operated tool or automatic tool to drive the shifting system 7.
  • Fig. 4 shows the inner structure 3 of Fig. 1 , respectively of Fig. 3 with a turbine component 12 connected to it.
  • the main cage is not shown in this perspective view of the mounting arrangement as it would block the view on the inner structure 3 and component 12.
  • the component interface 18a, 18b i.e. in this example the connection to a combustor can be divided into two areas/planes (plane of component interface 18a, and of component interface 18b).
  • a cylindrical flange is used as component interface 18a.
  • the flange is connected via an intermediate ring 10 which can be installed on the turbine component 12 (in this case combustor).
  • a 4x bolt connection is shown.
  • the second plane i.e.
  • connection consists of three brackets 11 which can be preassembled on the combustor.
  • brackets 11 For connection to the inner structure 3 cut outs are provided on ears of the inner structure 3.
  • Two rotatable bolts 13 can be rotated towards centerline of the bracket 11, and tightly connected with nuts 14 to available pockets 15 on the inner structure 3 (in this example the ears with pockets 15 form the first face of the component interface 18b).
  • the bracket connection of the component interface 18b is shown with open bolts in detail A and with closed bolts in detail B.
  • the position of the six rollers of the second face of inner structure interface 17ii can be adjusted relative to the inner structure 3. This adjustment can be carried out from outside of the main cage 2. It also allows an alignment of the turbine component 12 connected to the inner structure 3 with the casing 21 for moving the turbine component at least partly into the casing 21 and mounting it to the casing 21.
  • the three rollers of each plane are adjusted as a group.
  • One roller is vertical on top of the section and two rollers are arranged in the lower half of the cross section with opposite angular positions.
  • the rollers of are settable relative to the inner structure 3 in a direction of main load transmitted via the respective roller.
  • FIG. 5 A detail of a settable roller attached to the main cage 2 is shown in Fig. 5 .
  • the roller is mounted in a bearing block 25 which is movably housed in a recess 26 in the main cage 2.
  • the bearing block 25 is retained in the recess 26 by spring loaded bolts 23 which pull the bearing block 25 in the direction of main load transferred via the respective roller towards the wall of the main cage 2.
  • the bearing block 25 is stopped and kept in its position by an adjustment screw 24 which is screwed through the wall of the main cage 2 and reaches into the recess. By turning the adjustment screw 24 the bearing block can be moved in a direction of the main load transferred via the respective roller thus the distance between the inner wall surface of main cage 2 and the inner structure 3 can be adjusted.
  • the inner structure 3 is adjusted in an upwards direction relative to the main cage 2.
  • the top bearing block is pulled into the recess (in direction a1) and the lower bearing blocks are pushed out of the bearing block (direction a2 and a3).
  • the inner structure 3 is adjusted in a downwards direction relative to the main cage 2.
  • the top bearing block is pushed out of the recess (in direction b1) and the lower bearing blocks are pulled into the bearing block (direction b2 and b3).
  • the inner structure 3 is adjusted towards the left side relative to the main cage 2.
  • the top bearing block is pulled into the recess (in direction c1) and the lower bearing block left of a vertical center line of the inner structure 3 is pulled into the recess of the bearing block (direction c2) while the lower bearing block right of a vertical center line of the inner structure 3 is pushed out of the recess of the bearing block (direction c3).
  • the inner structure 3 is adjusted towards the right side relative to the main cage 2.
  • the top bearing block is pulled into the recess (in direction d1) and the lower bearing block left of a vertical center line of the inner structure 3 is pushed out of the recess of the bearing block (direction d2) while the lower bearing block left of a vertical center line of the inner structure 3 is pulled into the recess of the bearing block (direction d3).
  • Fig. 7a, 7b schematically show the main stages of the mounting of a base cage 1 and main cage 2 on a casing 21 for removal of a combustor 12.
  • the base case 1 is shown installed on the casing 21, with a combustor 12 still installed in the casing.
  • the core of the mounting arrangement 4 comprising of the main cage 2 and the inner structure 3 hangs on the hook 20 of a crane.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP15166252.5A 2014-05-26 2015-05-04 Verfahren und vorrichtung zur montage und demontage einer turbinenkomponente Withdrawn EP2949886A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15166252.5A EP2949886A1 (de) 2014-05-26 2015-05-04 Verfahren und vorrichtung zur montage und demontage einer turbinenkomponente

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14169780 2014-05-26
EP15166252.5A EP2949886A1 (de) 2014-05-26 2015-05-04 Verfahren und vorrichtung zur montage und demontage einer turbinenkomponente

Publications (1)

Publication Number Publication Date
EP2949886A1 true EP2949886A1 (de) 2015-12-02

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EP15166252.5A Withdrawn EP2949886A1 (de) 2014-05-26 2015-05-04 Verfahren und vorrichtung zur montage und demontage einer turbinenkomponente

Country Status (4)

Country Link
US (1) US20150337685A1 (de)
EP (1) EP2949886A1 (de)
JP (1) JP2015224642A (de)
CN (1) CN105317481A (de)

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US11352907B2 (en) 2016-09-20 2022-06-07 Siemens Energy Global GmbH & Co. KG Device for assembling and disassembling a component of a gas turbine

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US10934893B2 (en) 2015-12-31 2021-03-02 General Electric Company Combustor assembly lift systems and methods for using the same to install and remove combustor assemblies
JP7390963B2 (ja) * 2020-04-20 2023-12-04 三菱重工コンプレッサ株式会社 吊り具、支持治具、回転機械の分解方法、及び回転機械の組立方法
US11920482B2 (en) * 2022-03-10 2024-03-05 General Electric Company Device for fixing position of adjustable rows of guide vanes of turbomachine
US11988101B2 (en) 2022-03-10 2024-05-21 Ge Infrastructure Technology Llc Device for fixing position of adjustable rows of guide vanes of turbomachine

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GB2109461A (en) * 1981-10-13 1983-06-02 Occidental Petroleum Corp Apparatus for withdrawing and reassembling compressor rotors
US5921075A (en) 1995-10-19 1999-07-13 Mitsubishi Jukogyo Kabushiki Kaisha Burner replacing system
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EP1982792A1 (de) * 2007-04-16 2008-10-22 Thermodyn Werkzeug zum Ausbauen eines internen Bauteils im Gehäuse eines Kompressors
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US20120243982A1 (en) * 2010-04-14 2012-09-27 Masashi Sasaki Compressor and assembly method thereof
EP2565399A1 (de) * 2011-09-02 2013-03-06 Siemens Aktiengesellschaft Vorrichtung zur Montage bzw. Demontage eines Bauteils an bzw. in einer stationären Gasturbine und Verfahren zur Montage und Demontage von einem Bauteil einer stationären Gasturbine

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Publication number Priority date Publication date Assignee Title
US11352907B2 (en) 2016-09-20 2022-06-07 Siemens Energy Global GmbH & Co. KG Device for assembling and disassembling a component of a gas turbine

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