EP2689106A1 - Dispositif et procédé pour éjecter des aubes tenues dans un disque de roue par une liaison par sûreté de forme - Google Patents

Dispositif et procédé pour éjecter des aubes tenues dans un disque de roue par une liaison par sûreté de forme

Info

Publication number
EP2689106A1
EP2689106A1 EP11726097.6A EP11726097A EP2689106A1 EP 2689106 A1 EP2689106 A1 EP 2689106A1 EP 11726097 A EP11726097 A EP 11726097A EP 2689106 A1 EP2689106 A1 EP 2689106A1
Authority
EP
European Patent Office
Prior art keywords
unit
expelling
expulsion
punch
blade
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Withdrawn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
EP11726097.6A
Other languages
German (de)
English (en)
Inventor
Holger Laue-Beckmann
Oliver NEUKRANTZ
Helmut Pfoertner
Matthias Richter
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
Publication of EP2689106A1 publication Critical patent/EP2689106A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/005—Repairing methods or devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B23P19/025—For detaching only
    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/80—Repairing, retrofitting or upgrading methods

Definitions

  • the present invention relates to fine an apparatus and a method for driving out of a form-fitting held in a wheel ⁇ disc blades, in particular Ver Whyrschau-.
  • Ver Whyrrad ⁇ disc compressor blades are subject to wear, which is why they must be replaced after certain delay intervals in the context of a revision.
  • the Ver Whyrradlaten be first removed from the turbine, whereupon the compressor blades are usually removed locally and replaced by new compressor blades.
  • the compressor blades are held in a form-fitting manner via a dovetail-shaped blade root in correspondingly shaped grooves formed in the compressor wheel disk.
  • the backup of the compressor blades against axial displacement in the corresponding grooves is realized either via locking plates or on the An josgen two locking lugs at the ends of the respective groove.
  • the blades are sawn off behind the blade root. Then the compressor ⁇ disc from the outside must be a relief to be milled nut with a disc cutter to drive out the blades, following in each blade. Since suitable milling machines are usually present neither in the power plant nor in the immediate vicinity, often fall long transport routes for the transport back and forth of the Verêtrradfusionn. This extends the duration of the revision, which is associated with corresponding costs. In addition, the re-commissioning of the gas or steam turbine is delayed.
  • the present invention provides an expelling device for expelling held in a wheel disc blades, in particular compressor blades, comprising a frame, a turntable, in particular lifting turntable, and held on the frame striker unit with an expelling punch and acting on this percussion.
  • the wheel disc in which the technologytrei ⁇ reproduced blades are held to be mounted respectively on the turntable, whereupon the individual blades with the Austreibest Zi the blowing unit and the forces acting on these percussion series semi-automatic or automatic can be according expelled. Thanks to the expulsion device according to the invention, the body of the removal of the blades making worker hardly or not at all charged. The risk of accidents compared to manual ⁇ len expulsion is much lower.
  • the beating unit has a biasing cylinder acting on the expelling ram, with which the expelling ram can be prestressed with a predetermined pressure against a vane to be expelled.
  • the biasing force can for example be such ge ⁇ selects that they in the range between 70% and 90% required Austreibekraft, while the remaining lower proportion of Austreibekraft on the striking mechanism he witnessed ⁇ , which allows a very precise control of Austreibever ⁇ driving.
  • At least one operating device is provided, via which the pretensioning pressure of the pretensioning cylinder and / or the impact energy of the percussion mechanism and / or the impact frequency of the striking mechanism can be set by an operator, wherein the pretensioning pressure can be set in particular in a range between 0 bar and 250 bar , Accordingly, the operator can set the relevant parameters during the Austreibevorgangs be ⁇ must meet or adapt.
  • a machine control and at least one of the biasing pressure of the biasing cylinder sensing sensor which sends the detected biasing pressure in the form of Vorspanndruckausgangssig- signals to the machine control
  • the machine controller is arranged such that it the biasing pressure of the biasing cylinder and / or the striking force of the striker ⁇ factory and / or the percussion power of the percussion mechanism in Depending ⁇ ness changes from the received preload pressure output signals.
  • an automatic control or regulation of the expulsion process is realized via the machine control and the at least one sensor.
  • the biasing cylinder is preferably a hydraulic cylinder. Such a hydraulic cylinder has proved to be particularly favorable.
  • the biasing cylinder has, according to an embodiment of the present invention, a continuous piston rod and is arranged between the percussion mechanism and the Austreibestkov such that the impact mechanism acts on the one piston rod ⁇ end, and that the other piston rod end acts on the Austreibestkov.
  • the impact mechanism preferably has a pneumatic impact cylinder.
  • the expulsion punch is mounted in a receiving head oscillating, so that the expulsion punch is deflectable transversely to its longitudinal axis in particular in both directions. In this way it is prevented that the drive punch is damaged when side forces act on them.
  • the deflection angle can be monitored with a suitable sensor during the expulsion process.
  • a corresponding sensor per deflection direction may be arranged in the receiving head.
  • provided at the free end of the expulsion stamp Austrei ⁇ Bestkovspitze is rounded, in particular semi ⁇ spherical.
  • An ejection punch tip formed in this way is applied to the base of the blade to be driven out.
  • a groove ge ⁇ milled is before the beginning of the blade root in Austreibevorgangs preferably a groove ge ⁇ milled, in which engages the Austreibestkovspitze during Austrei ⁇ bens.
  • the shape of the groove bottom is advantageously adapted to the shape of the expulsion temple tip, so that a partial positive connection is achieved.
  • the expelling punch tip for expelling the blade is attached to the blade neck in such a way that the expelling punch tip partially surrounds the blade neck. Forming a groove on the blade can ent ⁇ speaking omitted.
  • the beating unit is advantageously held pivotably on a frame part via an adjusting unit. With such an adjustment unit, the beater unit can be optimally aligned with respect to the blades to be driven out.
  • the expelling means comprises a clamping unit that forms such ⁇ out and is adapted to supporting the wheel disc held on the turntable in driving out of the blades.
  • the clamping unit is used primarily to neutralize the reaction forces generated during off ⁇ drive to prevent slippage of the Verêtrradulation during Austrei ⁇ bens.
  • the clamping unit preferably has an adjusting device, which is designed such that it allows at least one Be ⁇ movement of the clamping unit radially to the turntable. Ent ⁇ speaking the clamping unit for wheel discs can be used with various ⁇ which diameters.
  • the clamping unit is preferably pivotally supported on the frame, in particular on a holding frame part, the
  • the clamping unit is pivotally attached to the upper frame part. Ent ⁇ speaking, the clamping unit can be aligned centrally to the center axis of the Verêtrradus.
  • the clamping unit has a lower and one or more upper holding stamps, which are movable toward and away from one another, in particular via a spindle drive or a hydraulic cylinder. Accordingly, can absorb the compressor ⁇ disc between the holding temples.
  • the expelling installation comprises an embossing unit which is integrally formed into ⁇ particular with the clamping unit to clamp embossing unit.
  • the embossing unit serves to the new blades replacing the driven blades by means of To define embossing in the wheel disc.
  • the equipment of the expelling device with such a stamping unit is in particular to the advantage that a separate pre ⁇ machine is not required.
  • In the Hal- test Zin die are preferably integrated, resulting in a very simp ⁇ Chen and inexpensive construction.
  • the expelling device comprises a milling unit.
  • a milling embossed areas that allow for For ⁇ driving blades are attached to a wheel disk can be removed before Austreiberea at least for the most part.
  • a groove can be introduced in the blade root of the blade to be driven out before carrying out the expulsion process, which groove serves to receive the punching punch.
  • the shape of the groove preferably corresponds substantially to the shape of the punch.
  • the milling unit is preferably held for a multi-limbed Ge ⁇ steering arm between an operating position and a non-operating position pivoted to the frame, and in particular on the holding frame part. Accordingly, the milling ⁇ unit can be switched on and swung out as needed.
  • the milling unit is advantageously designed such that, in its operating position, it can be supported on a central axis of the rotary table. Thanks to this additional support, a very good rigidity of the milling unit is achieved during the milling process.
  • the milling unit preferably has a locking device for locking the pivot joints of the articulated arm. About a sol ⁇ che locking the milling unit is additionally stiffened during milling.
  • the milling unit at least on two Fräserver ⁇ travel axes for moving a cutter head.
  • a horizontal cutter travel axis is provided, which is positioned on one of the Gelenkarmglieder such that the direction of a groove to be milled always passes through the center axis of the turntable.
  • a vertical Milling Verfahrachse is provided, via which the feed motion is realized.
  • the frame comprises a base frame part, a lower frame part, which is held movably on the base frame via a linear guide, an upper frame part, which is pivotally and releasably attached to the lower Ge ⁇ technikil, a Garmaneil, the pivotally and releasably supported on the lower frame member, and a striker frame member detachably supported on the upper frame member, the base frame member being preferably divided into discrete base frame sections detachably connected to each other.
  • Such a subdivision of the frame into individual detachably interconnected frame parts is particularly advantageous in that the expelling device can be disassembled accordingly for transport.
  • the Austrei ⁇ before direction is divided into individual transport modules that can be transported easily and space-saving.
  • the present invention provides a procedural ⁇ ren to expel positively locking ge ⁇ held in a wheel disc blades, in particular compressor blades, wherein the blades are driven by using an expelling member according to the invention.
  • the impact frequency of the percussion mechanism changes during the ejection of a blade, which can be done manually, semi-automatically or fully automatically.
  • the mentioned parameters are adapted to the respective requirements of the expulsion process.
  • embossed areas of a blade root of a blade redesigntrei ⁇ reproduced before the expulsion of the blade are at least partially removed by milling, in order to simplify the Austreibevorgang.
  • a recess is milled advantageous at the top of a blade root of a blade to be expelled before the sprouting, serves during the expulsion of the blade than on ⁇ location for the Austreibestkov and counteracts slipping of the Austreibestkovs.
  • FIG. 1 shows a perspective side view of a Austreibe ⁇ device according to an embodiment of the present invention, which has a modular structure up;
  • Figure 2 is a perspective side view of a first
  • FIG. 3 shows a perspective partial rear view of the first module shown in FIG. 2;
  • Figure 4 is a perspective side view of a second module of the expelling device shown in Figure 1;
  • Figure 5 is a partial perspective rear view of the second module shown in Figure 4;
  • Figure 6 is a side perspective view of a third
  • Figure 7 is a side perspective view of the third module shown in Figure 6, which is pivoted within the transport device in an upright position;
  • Figure 8 is a side perspective view of the
  • Transport device removed third module
  • Figure 9 is a perspective bottom view of the third module shown in Figure 8.
  • FIG. 10 shows a perspective view of a support element
  • Figure is a partial perspective side view of the first
  • Figure 12 is a side perspective view of a fourth
  • FIG. 13 shows a perspective top view of that in FIG. 12
  • Figure 14 is a partial perspective front view of the expelling apparatus shown in Figure 1 with the milling unit in its operative position;
  • FIG. 15 shows a perspective partial view of FIG. 1
  • Figures 1 to 15 show an expelling device 10 according to an embodiment of the present invention, which serves for the expulsion of positively held in a wheel disc blades, in particular for expulsion of compressor blades.
  • the expelling device 10 comprises a frame 12 which is divided into a plurality of frame parts.
  • the frame 12 a front base frame part 12a, a detachably connected thereto rear base frame part 12b, a lower frame portion 12c, which is movably supported via a linear guide 24 on the front base ⁇ frame portion 12a, an upper frame portion 12d on the lower frame ⁇ part 12c pivotally and releasably attached, a Garmaneil 12e, which is pivotally and releasably held on the upper Gerillonil 12d, and a Schlagech hobbyeil 12f, which is detachably mounted on the upper frame part 12d.
  • Further main components of the expulsion device 10 form a lifting turntable 14, a striking unit 16, a clamping embossing unit 18, a milling unit 20 and a control cabinet 22.
  • the method of serving as a slide lower frame portion 12c along the linear guide 24 is done manually.
  • the lower frame part 12c can be locked via a locking ⁇ plate 26 at three positions on the front base frame ⁇ part 12a and the rear base frame part 12b. In this way, the complete adjustment range of the lower frame part 12c along the linear guide 24 is divided into three partial adjustment.
  • the final positioning of the lower frame part 12c in the respective partial adjustment ⁇ areas then takes place via a trapezoidal threaded spindle, not shown, which can be manually operated via a arranged on the back of unte ⁇ ren frame member 12c handwheel 28. As orientation serves a not shown position indicator.
  • the manual adjustment of the lower frame part 12c along the linear guide 24 can also be effected by an electrical-mechanical adjustment by means of a servomotor or three-phase motor or by a hydraulic cylinder.
  • the corresponding adjustment axes can be equipped with displacement measuring systems. The respective distances can then be via digital display on the operation panel shows ⁇ .
  • the fixation of the lower frame part 12 c in the working position can be realized in all axes by piston rod clamping devices attached to the respective piston rods.
  • the upper frame part 12d is pivotably held about a pivot axis 37 on the lower frame part 12c.
  • the pivoting movement about the pivot axis 37 is realized via a hydraulic cylinder, not shown, and serves as self-weight compensation for all held on the upper frame part 12d components.
  • pivoting device 38 which, as will be explained in more detail below, serves to receive the clamping embossing unit 18 and allows pivoting about a vertical pivot axis 32.
  • the pivoting is done manually here. It should be clear that the manual adjustment can also be replaced here by an electromechanical or hydraulic adjustment.
  • horizontally extending guide rails 36 are formed and 38 from ⁇ which allow an adjusting movement of the pivoting device 30 held on the clamping-embossing unit 18 for radially lifting rotary table 14, as is explained in more detail below ER.
  • the lifting turntable 14 serves to accommodate compressor wheel discs. It consists of a lifting part and a rotating part, which are not shown here in detail.
  • the lifting part has a sturdy vertical guide with hydraulic cylinder. By adjusting the hydraulic cylinder, the thickness differences of the Ver emphasizerradAMPn can be compensated. So that the hydraulic cylinder does not change its holding position during prolonged loading due to corresponding leaks in seals, the lifting turntable 14 is equipped with a strong stop ring which prevents the compressor disc from slowly descending. For the exact Feinposi ⁇ tioning of the angular position of the compressor wheel to the impact unit 16, the recording of the lifting turntable is equipped with the rotating part. About this rotary member, the Verdich ⁇ terradusion can be positioned with respect to the beating unit 16. Alternatively, the positioning of the compressor wheel Disc also done by a built in the hub turntable 14 servo drive.
  • the front base frame part 12a of the rear base frame part 12b detachably the front Basisge ⁇ adjusting part 12a at its rear side with locating pins 40, one operatively connected with the locking plate 26 Kupp ⁇ averaging part 42 and an anti-rotation device 44 is provided. Furthermore, numerous through holes 45 are formed, which serve to receive screws to the front base frame ⁇ part 12a with the rear base frame part 12b to screw ben. About height j ustageschrauben 46, the rear portion of the front base frame part 12a can be moved slightly up and down ⁇ down to realize a height adjustment during assembly between the front base frame part 12a with the rear base frame part 12b. Furthermore, transport securing devices 48 are provided adjacent to the linear guide 24, which prevent displacement of the lower frame part 12 c along the linear guide 24 during the transport of the module A.
  • two substantially horizontally extending support surfaces 50 and 52 are formed on the upper side of the upper frame member 12d, each of which a Tarnah ⁇ mebolzen 54 and 56 protrudes.
  • the Aufla ⁇ surfaces are provided with a series of through holes 58 which serve to receive screws to screw the Schlagech arbitreil 12 f to the upper frame part 12 d.
  • FIGS 4 and 5 show a second module B, which in ⁇ We sentlichen from the rear base frame part 12b, which is arranged on it the rear part of the linear guide 24 and the cabinet 22nd Between the linear guide 24 and the cabinet 22, an actuating lever 60 for Be ⁇ activity of the locking plate 26 is arranged.
  • the Actu ⁇ supply lever 60 is operatively connected to a linkage 62, to whose free end another coupling part 64 is arranged, which can be brought into engagement with the coupling part 42 of the module A.
  • receiving bores 65 are provided at corresponding positions on the front side of the rear base frame part 12b.
  • FIGS 6 to 9 show a third module C, which is held in Figures 6 and 7 in a transport device 66.
  • the module C consists essentially of the upper Ge ⁇ schreibil 12d, on which the beating unit 16 is held by a pivoting means 68 arcuately pivotable.
  • the beating unit 16 viewed from top to bottom, comprises a percussion mechanism 70, which is formed by a pneumatic impact cylinder, a prestressing cylinder 72 formed by a hydraulic cylinder and an expulsion punch 74.
  • the pretensioning cylinder 72 comprises a continuous piston rod 76, on the upper free end of which the striking mechanism 70 acts , wherein at the lower free end of the punch 74 is held.
  • the biasing cylinder 72 serves to bias the Austreibest Zi 74 during the Austreibereaes with a predetermined pre ⁇ clamping pressure against the scooped out bucket, which can be set via a not shown Riversideein- direction by the worker between 0 bar and 250 bar. Likewise, the impact energy and the frequency of impact of percussion 70 can be varied manually via this control device.
  • a machine controller and at least one sensor that detects the biasing pressure of the preload cylinder 72 and sends the preload pressure detected during the expulsion process to the machine controller in the form of preload pressure output signals, the machine controller being configured to set the preload pressure of the preload pressure biasing the cylinder 72 and / or impact ⁇ force and / or impact energy of the impact mechanism 70 in depen ⁇ dependence received from the preload pressure output signals changes.
  • the machine controller being configured to set the preload pressure of the preload pressure biasing the cylinder 72 and / or impact ⁇ force and / or impact energy of the impact mechanism 70 in depen ⁇ dependence received from the preload pressure output signals changes.
  • the Austreibestkov 74 is mounted on an unspecified Darge ⁇ set recording head swinging at the lower free end of the piston rod 76 of the biasing cylinder 72 to prevent damage to the drive punch 74 due to laterally acting on these forces.
  • the free end of Austreibestkovs 74 is formed herein in cross-section be ⁇ seeks V-shaped, whereby the risk of waste is reduced slippage of Austreibestkovs 74 of the blade to be expelled.
  • the underside of the Schlaghow amateureil 12f is provided with two on ⁇ bearing surfaces 78 and 80, whose positions correspond to those of the bearing surfaces 50 and 52 of the upper member 12d.
  • the bearing surfaces 78 and 80 are provided with corresponding receiving bores 82 and 84.
  • 12f through holes 86 are formed on the bearing surfaces 78 and 80 of the impact unit frame part, the positions of the through holes 58 of the supporting surfaces 50 and 52 of the upper frame part 12d korrespondie ⁇ ren. Accordingly, the upper frame portion 12d, and the striking unit frame portion 12f may be screwed together. To transport the third module C, this can, as it is in
  • FIG. 10 shows a support element 94 which serves to support the milling unit 20 during a milling process. From the ⁇ supporting element 94 is mounted at the initial assembly of corresponding bolts 96 on the hub turntable 14, as shown in FIG. 11 In this case, the longitudinal axis of the support element 94 is aligned with the axis of rotation of the lifting turntable 14. After initial assembly, the support element may remain on the first module A.
  • Figures 12 and 13 show a fourth module D, which in the
  • the holding frame part 12e the slide 12f for the self-weight balance of the holding frame part 12e, and the clamping embossing unit 18 and the milling unit 20, which are mounted on the holding frame part 12e.
  • a slide 12g for self-weight compensation in the vertical direction of the holding frame part 12e.
  • Provided on the carriage rear side are substantially horizontally extending, spaced superimposed and mutually facing guide grooves 98 and 100, which are in engagement with the guide rails 36 and 38 of the pivoting device 30 of the upper frame part 12d.
  • the fixation of the holding frame part 12 e on the upper frame part 12 d is realized via clamping plates 102.
  • the carriage 12g along the upper frame portion 12d can move radially in the direction of the guide rails 36 and 38 for lifting and rotating table fourteenth
  • the slide front side vertically extending guide rails 103 are arranged, on which the holding frame part 12e is held up and down ⁇ down movable.
  • the clamping embossing unit 18 includes a stationary on the Garge ⁇ scholaril 12e held lower holding punch 104 and a movable up and down upper holding punch 106.
  • the Be ⁇ movement of the upper holding punch 106 is realized in the present case by a hydraulic cylinder, which also allows the use of a spindle drive is.
  • embossing dies not shown are integrated.
  • the clamping embossing unit 18 can be used both for supporting a compressor wheel disc arranged on the lifting turntable 14 and for embossing new blades to be fastened in the compressor wheel disc.
  • the milling unit 20 comprises a multi-link articulated arm 108, wherein a free end of the articulated arm 108 is fixed on the holding setting part 12e and the other free end of the articulated arm 108 on the supporting element 94.
  • a milling head 110 can be moved over two travel axes. More specifically, a horizontal travel axis 112 is provided which is positioned on one of the articulated arm members such that the direction of a groove to be milled always passes through the center axis of the lift turntable 14. Furthermore, a vertical travel axis 114 is provided, via which the delivery can take place. The drive of the track axes 112 and 114 is done manually here. Alternatively, of course, appropriate motors can be provided.
  • the individual Drehge ⁇ joints of the articulated arm 108 can be locked on not shown Arre ⁇ tier tillen to ensure good rigidity during milling. If the milling unit 20 is not required, the articulated arm 108 can be released from the supporting element 94, whereupon the milling unit 20 can be pivoted into a non-operating position, as shown in FIG.
  • the expulsion device 10 In order to carry out a revision of compressor impeller blades , the expulsion device 10, which is put into its individual modules A, B, C and D, is first transported to the inspection location.
  • the modular design facilitates transport to air, water and land.
  • the modules A and B are then placed on a level surface and aligned.
  • aligning make sure that the mounting bolts 40 of the front base Adjustment part 12a with the associated receiving holes 65 of the rear base frame part 12b are aligned.
  • the two modules A and B can be aligned with each other via the bankruptcynj ustierschrauben 46.
  • the anti-rotation lock 44 of the module A is removed, whereupon the front base frame part 12a and the rear base frame part 12b are pushed together.
  • the front base frame part 12a is bolted to the rear base frame part 12b.
  • the module C is erected in the transport device 66 using a crane by the module C ge with its pins 88 to the pivot joints 90 of the transport device 66 ⁇ pivots. Now the module C is in its mounting position. Then, the Schlagech amateureil 12 f can be lifted onto the upper frame part 12 d. Upon lowering of the upper frame part 12f is important to ensure that the receiving bolts are ord ⁇ voltage according inserted into the associated receiving bores 82 and 84 of the impact unit 12f frame part 54 and 56 of the upper frame part 12d. Then, the screwing of Schlagech hoeils 12f done with the upper frame part 12d.
  • the support element 94 is screwed to the screws 96 on the hub turntable 14.
  • each blade is held in a form-fitting manner via a dovetail-shaped blade root in correspondingly shaped, formed along the circumference of Ver Nonerradscale Ver Whyrradinnut , Each blade is secured against axial displacement within the associated Ver Nonerradusionnnut by a two-sided embossing edge-side Schaufelfußabête on the Ver Nonerradin.
  • the lifting turntable 14 and the striking unit 16 are directed towards each other from ⁇ so that the tip of the punch 74 is received in a milled groove of a scoop to be driven out, it should be ensured that the axis of Austrei ⁇ stamp 74 with the associated Compressor wheel groove, in which the compressor blade to be driven is received, is aligned.
  • the biasing pressure of the biasing cylinder 72 of the beating unit 16 is adjusted such that the pusher punch 74 exerts on the scoop to be driven about 70% to 90% of the expulsion force required for expulsion.
  • the impact energy of the percussion mechanism 70 of the ⁇ art is selected so that the remaining required to drive the blade force is applied by the impact mechanism 70th Furthermore, the beat frequency of the striking mechanism 70 is determined.
  • the blade from the Ver Togetherrradsay can be ⁇ exaggerated, wherein the biasing force of the biasing cylinder 72, the impact energy of the percussion mechanism 70 as well as its impact frequency of the worker depending on the Austreibe- be changed state of a blade. After expelling a compressor blade of the lift turntable 14 is so ge ⁇ rotates that the expulsion punch 74 is aligned with the next compressor blade, after which the next Austrei- can be performed process.
  • the Verreterradular each between the holding punches 104 and 106 of the clamping embossing unit 18 is clamped and supported in this way, so that the forces acting on the Verdichtradulation via the impact unit 16 are absorbed. In this way, a change in position of the blade to be driven out with respect to the expulsion punch 74 is reliably prevented.
  • the pivotable mounting of the expulsion punch 74 in the associated receiving head ver ⁇ reduces the risk of damage to the Austreibest Zis 74 during the respective Austreibeluxes.
  • the tip of the punch for picking up a blade neck of a bucket to be driven out is U-shaped or V-shaped, for expelling a blade, the Austreibestkovspitze is then on the blade neck so ⁇ sets that the Austreibestkovspitze the blade neck ⁇ attacks, thereby slipping the Austreibestkovs is prevented during the Austreibereaes.
  • the Provision of the previously described groove on the blade root can be waived accordingly.
  • Compressor disc disengaged from the lifting turntable 14 and re-installed in the appropriate implement.
  • the expelling device 10 is disassembled again into its individual modules A, B, C and D and can be transported away easily.

Landscapes

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

Abstract

La présente invention porte sur un dispositif d'expulsion destiné à éjecter des aubes, en particulier des aubes de compresseur, qui sont tenues sur un disque de roue par une liaison par sûreté de forme, le dispositif comprenant un bâti, une table tournante, en particulier une table tournante et élévatrice, et une unité de frappe tenue sur le bâti, et comprenant un piston d'éjection ainsi qu'un mécanisme de percussion agissant sur ce piston.
EP11726097.6A 2011-06-08 2011-06-08 Dispositif et procédé pour éjecter des aubes tenues dans un disque de roue par une liaison par sûreté de forme Withdrawn EP2689106A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/059499 WO2012167824A1 (fr) 2011-06-08 2011-06-08 Dispositif et procédé pour éjecter des aubes tenues dans un disque de roue par une liaison par sûreté de forme

Publications (1)

Publication Number Publication Date
EP2689106A1 true EP2689106A1 (fr) 2014-01-29

Family

ID=44627208

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Application Number Title Priority Date Filing Date
EP11726097.6A Withdrawn EP2689106A1 (fr) 2011-06-08 2011-06-08 Dispositif et procédé pour éjecter des aubes tenues dans un disque de roue par une liaison par sûreté de forme

Country Status (5)

Country Link
EP (1) EP2689106A1 (fr)
KR (1) KR101549323B1 (fr)
CN (1) CN103597169B (fr)
RU (1) RU2571494C2 (fr)
WO (1) WO2012167824A1 (fr)

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Publication number Priority date Publication date Assignee Title
US9381602B2 (en) 2014-05-14 2016-07-05 General Electric Company Turbomachine bucket displacement apparatus and method of use
DE102015215004A1 (de) 2015-08-06 2017-02-09 Siemens Aktiengesellschaft Verfahren und Austreibevorrichtung zum Austreiben einer Schaufel
EP3318716B2 (fr) 2016-11-04 2023-01-11 General Electric Company Installation ou dépose d'aube de turbine sur l'emplanture d'aube de turbine
EP3327250B1 (fr) * 2016-11-23 2024-05-15 General Electric Technology GmbH Installation ou dépose d'aube de turbine à l'embase de l'aube de turbine
CN107914131B (zh) * 2017-12-15 2023-07-18 浙江武义浩伟机械有限公司 一种执手锁把手与锁壳的装配装置
CN109333412B (zh) * 2018-12-07 2020-08-25 中国航发南方工业有限公司 涡轮转子组件的锁片分解工装
US11732613B2 (en) 2021-01-22 2023-08-22 General Electric Company Apparatus for removal or installation of turbine blade

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Also Published As

Publication number Publication date
RU2013158353A (ru) 2015-07-20
KR20140015523A (ko) 2014-02-06
CN103597169B (zh) 2016-01-20
RU2571494C2 (ru) 2015-12-20
KR101549323B1 (ko) 2015-09-01
WO2012167824A1 (fr) 2012-12-13
CN103597169A (zh) 2014-02-19

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