EP2981678B1 - Haltevorrichtung - Google Patents

Haltevorrichtung Download PDF

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Publication number
EP2981678B1
EP2981678B1 EP14728136.4A EP14728136A EP2981678B1 EP 2981678 B1 EP2981678 B1 EP 2981678B1 EP 14728136 A EP14728136 A EP 14728136A EP 2981678 B1 EP2981678 B1 EP 2981678B1
Authority
EP
European Patent Office
Prior art keywords
guide ring
support
bearing surface
holder device
rear bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14728136.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2981678A1 (de
Inventor
Klaus BLÖDEL
Peter Clement
Jens Göhler
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 PL14728136T priority Critical patent/PL2981678T3/pl
Publication of EP2981678A1 publication Critical patent/EP2981678A1/de
Application granted granted Critical
Publication of EP2981678B1 publication Critical patent/EP2981678B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/12—Riveting machines with tools or tool parts having a movement additional to the feed movement, e.g. spin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
    • B21J15/145—Turbines
    • 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
    • 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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector

Definitions

  • the present invention relates to a holding device for holding and positioning an outer guide ring with guide vanes fixed thereto during a riveting process for attaching an inner guide ring to the guide vanes. Furthermore, the invention relates to a riveting device in order to attach an inner guide ring to the guide vanes, which are fixed to an outer guide ring.
  • guide vanes and impellers are arranged one behind the other in the compressor and turbine stages.
  • the wheels form the moving or rotating part of the turbine system, with which a flowing fluid is either compressed or relaxed.
  • Each impeller is followed by a guide device, which defines the flow generated by the wheels defined.
  • the guide devices and wheels are alternately connected in series.
  • a guide device in a turbine consists of an outer guide ring, on the inside of which a plurality of guide vanes is arranged in a defined manner in the circumferential direction.
  • This outer vane ring is installed in a so-called vane support and mounted together with this in the turbine housing.
  • the outer guide ring can be inserted into a corresponding groove in the inner surface of the guide blade carrier.
  • the vanes are riveted here with the designed as shrouds inner guide rings.
  • the inner guide rings or shrouds have for this purpose corresponding holes into which the rivets are introduced can.
  • the guide vanes may also comprise rivet pins at their front ends, with which they can be riveted by said holes in the inner guide rings.
  • Such guide devices, in which the guide vanes are fixed to an outer guide ring and riveted at its radially inner end with an inner guide ring and the shroud are, for example, from DE 10 2008 051 937 B4 known.
  • the outer guide ring with the guide vanes fixed thereto must furthermore be positioned in the guide blade carrier.
  • the riveting can be done in a so-called dummy. This is a half Schmiedering having a groove with an inner diameter which corresponds exactly to the outer diameter of the outer guide ring.
  • the positioning in the vane carrier or dummy is required because the outer diameter of the outer guide ring requires a firm support. If there is no firm support, there is a risk that the rivet connection fails qualitatively faulty or curved the outer guide ring by introduced stresses.
  • Object of the present invention is therefore to provide a holding device with which the riveting of the vanes can be done comparatively easily with an inner guide ring or shroud.
  • the invention provides a holding device for holding and positioning an outer guide ring with guide vanes fixed thereto during a riveting process for attaching an inner guide ring to the guide vanes, with a frame, a vertically adjustable on the frame arranged support plate, a positioned on the back of the support plate supporting means defining a rear abutment surface for the outer guide ring, a pair of support elements on opposite sides of the support plate in front of the rear abutment surface Support means are arranged, and a fixing device which is adapted to hold a positioned on the support plate outer guide ring during a riveting process on the rear abutment surface of the support means and in particular to press against them.
  • the inventively provided holding device initially comprises two support elements which serve the support of the outer guide ring outside the riveting operation. Further, a fixing device is provided to press a placed on the support elements outer guide ring against the rear abutment surface of the support means and so to fix. For the riveting operation, the support plate, which is placed between the support elements, for example by means of a hydraulic or mechanical actuator in the vertical direction is raised so that it lifts the outer guide ring, and so supported during the riveting operation on its underside.
  • the holding device according to the invention thus provides the possibility of riveting the inner guide ring of a guide device with the guide vanes outside the guide blade carrier or of a dummy on a riveting device.
  • the support plate is associated with a locking device to fix the support plate in a predetermined vertical position.
  • a locking device can be dispensed with if the adjusting device, via which the support plate is movable in the vertical direction, is designed such that it securely holds the support plate in a raised position during the riveting operation.
  • the support means may be fixedly mounted separately from the frame. According to a preferred embodiment, however, it is fixed to the frame and optionally set against this, so that the rear contact surface defined by it occupies a fixed predetermined position relative to the frame.
  • the support means may comprise a support wall on which the rear contact surface is formed.
  • the support elements are designed as support rollers which are rotatable about axes perpendicular to the rear abutment surface.
  • the design of the support elements as a support rollers has the advantage that the outer guide ring is rotated on the support rollers and thus the respective vane to be riveted can be brought exactly to the desired position.
  • the support elements are parallel and / or perpendicular to the rear contact surface of the support means in the horizontal direction adjustable and fixed in predetermined or predetermined positions.
  • the support elements may be provided for example on a cross slide assembly.
  • the fixing device comprises a holder which is adjustably held and formed on the frame perpendicular with respect to the rear abutment surface of the support means and formed around an outer guide ring positioned on the support plate in the extension region of the support plate on the back To hold contact surface and in particular to press against them.
  • the holder is used to fix the outer guide ring during the riveting 90 ° to the direction of force of the riveting in the area in which the outer guide ring rests on the support plate.
  • the outer guide ring is supported by the support plate on its underside and securely fixed between the rear abutment surface and the retainer in that area in which the riveting forces acting on the outer guide ring, so that the riveting forces are optimally introduced into the outer guide ring and thus deformations or undesirable loads on the outer guide ring are avoided.
  • the fixing means may further comprise retaining members which are formed and positioned or positionable to retain and in particular against an outer guide ring positioned on the platen at positions spaced from the platen against the rear support surface of the support means to press.
  • the holding elements are preferably designed as holding rollers, which are rotatable about axes extending parallel to the rear contact surface.
  • the holding elements or retaining rollers serve to guide the additional guide ring during the cycle between two riveting operations and the additional fixation during the riveting process.
  • the holding elements are expediently adjustable relative to the rear abutment surface parallel and / or perpendicular to this and fixed in predetermined or predeterminable positions.
  • the holding elements on the support means in particular on the rear wall of the support means, be mounted horizontally adjustable. By adjusting the holding elements can be positioned according to the size of the outer guide ring respectively.
  • positioning elements can be adjustably mounted on the support device in the horizontal direction in order to support an outer guide ring positioned on the support plate on its outer circumference and / or on its inner circumference and thus position it in the lateral direction.
  • a holding device can be used in a riveting device which has a riveting unit, in particular a wobble riveting unit with a pressing tool which is positioned above the support plate.
  • the wobble riveting unit is operable to move the pressing tool vertically toward the platen to make a rivet connection between a vane fixed to an outer guide ring positioned on the platen and an inner guide ring.
  • FIGS. 1 and 2 a riveting device according to the present invention is shown.
  • This serves for producing a guide device for a turbine, the guide vanes 1, which are fixed to the inner periphery of an outer guide ring 2 and project radially inwardly from this - as in FIG. 3 is shown, at their radially inner ends with an inner guide ring 3 - also called shroud - to connect, namely to rivet.
  • the inner guide ring 3 as in FIG. 4 can be seen, corresponding holes 3a, which of the radially inner Ends of the guide vanes 3, which are formed as rivet 1 a, are penetrated.
  • the riveting device comprises a holding device 4 for holding and positioning the outer guide ring 2 with the guide vanes 1 fixed thereto during the riveting process for attaching the inner guide ring 3 to the guide vanes 1, and a wobble riveting unit 5.
  • the holding device 4 has a frame 6 and a Platen 7, which is adjustable to the frame by means of a hydraulic or mechanical adjusting device, not shown in the vertical direction.
  • a support device 8 is mounted at the back of the frame 6. This essentially comprises a rear wall 8a, which defines on its front side a vertical abutment surface, and a plurality of fastening struts 8b, via which the rear wall 8a is supported on the frame 6.
  • support elements in the form of support rollers 9 are provided on opposite sides of the support plate 2, which are rotatable about axes 10 perpendicular to the rear abutment surface of the rear wall 8a.
  • the support rollers 9 are mounted on a carriage 11a and rotatably supported, which is parallel to the defined by the rear wall 8a contact surface in the horizontal direction adjustable, so that the distance of the support rollers 9 of the support plate 7 is variable.
  • the arrangement is made such that the support rollers protrude 9 in a lowered position of the support plate 7 upwards on this.
  • the support rollers 9 serve to place an outer guide ring 2 on the holding device 4.
  • the outer guide ring 2 can be moved laterally so that the lowest point is positioned immediately below the wobble riveting unit 2.
  • the carriage 11a is in turn mounted to form a cross slide assembly on a carriage 11b, which is perpendicular to the rear wall 9 adjustable.
  • the holding device 4 further comprises a fixing device 12, which is formed on the Auflagerollen 9 or positioned on the support plate 7 outer guide ring 2 on the contact surface of the support means 8, that is to hold on the rear wall 8a and in particular to press against them.
  • the fixing device 12 comprises a holding holder 13, which is held on the frame 6 perpendicular with respect to the contact surface of the support means 8 adjustable. The arrangement is such that the retainer 13 can be moved to fix a positioned on the support rollers 9 and the support plate 7 outer guide ring 2 to the outer guide ring 2 in its underlying peripheral region, in which the outer guide ring 2 with the support plate 7 comes into contact to press against the contact surface of the rear wall 8a.
  • the fixing device 12 comprises holding elements 14, which are fixed at a distance from the support plate 7 on the rear wall 8a of the support means 8 in order to hold an outer guide ring 2 on the rear wall 8a.
  • the holding elements are designed as holding rollers 14 which are rotatable about axes 15 extending parallel to the contact surface of the rear wall 8a.
  • the support rollers 14 are mounted on the rear wall 8a of the support means 8 and held horizontally adjustable at this.
  • corresponding guide grooves 16 are formed in the front side of the rear wall 8a.
  • the rear wall positioning elements 17 are mounted, which serve to support an outer guide ring 2 at its outer periphery and / or on its inner circumference and so to position in the lateral direction.
  • the positioning elements are designed as positioning rollers 17 which are rotatable about axes 18 perpendicular to the plane of the contact surface.
  • the positioning rollers 17 are connected via corresponding fastening arms 19 with the rear wall 8a and held there in horizontal guide grooves 20 movable so that they can be adjusted according to the size of the outer guide ring 2 inwards or outwards.
  • the wobble riveting unit 5 is mounted on the frame 6 of the holding device 4 in the illustrated embodiment. It includes a pressing tool above the platen wherein the wobble riveting unit is operable to move the pressing tool vertically in the direction of the support plate 7 and thus a rivet connection between an inner guide ring 3 and a stator 1, which is fixed to an outer guide ring 2 positioned on the support plate 7, manufacture.
  • an outer guide ring 2 with guide vanes 1 provided thereon is positioned on the support rollers 9 of the holding device 4. Subsequently, the support rollers 9 are positioned by adjusting the carriages 11a, 11b so that the axis of the rivet pin of a guide blade 1 to be riveted is approximately coaxial with the adjustment axis of the pressing tool. In this case, the outer guide ring 2 is pressed by the retaining bracket 13 and the retaining elements 14 of the fixing device 12 against the contact surface of the rear wall 8a. Further, the positioning rollers 17 are positioned on the inner periphery of the outer guide ring 2 to stabilize it in the lateral direction.
  • the support plate 7 is slightly raised and secured in the raised position, so that the outer guide ring 2 has no contact with the support rollers 9 and is supported only by the support plate 7 itself before the tumble riveting unit 5 is actuated to the Lower press tool and so rivet the vane 1 with an attached inner guide ring 3 or shroud.
  • the support plate 7 is lowered, so that the outer guide ring 2 again comes to rest on the support rollers 9 and can be rotated by one cycle to position a further guide blade 1 opposite the pressing tool of the wobble riveting unit 4.
  • the support rollers 9, the support rollers 14 and the positioning rollers 17 thereby allow the outer guide ring 2 can be easily rotated after release of the retainer 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automatic Assembly (AREA)
EP14728136.4A 2013-05-24 2014-05-26 Haltevorrichtung Active EP2981678B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14728136T PL2981678T3 (pl) 2013-05-24 2014-05-26 Przyrząd przytrzymujący

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013209694 2013-05-24
PCT/EP2014/060828 WO2014188002A1 (de) 2013-05-24 2014-05-26 Haltevorrichtung

Publications (2)

Publication Number Publication Date
EP2981678A1 EP2981678A1 (de) 2016-02-10
EP2981678B1 true EP2981678B1 (de) 2017-05-03

Family

ID=50884892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14728136.4A Active EP2981678B1 (de) 2013-05-24 2014-05-26 Haltevorrichtung

Country Status (3)

Country Link
EP (1) EP2981678B1 (pl)
PL (1) PL2981678T3 (pl)
WO (1) WO2014188002A1 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1027992B1 (fr) * 2020-01-15 2021-08-17 Safran Aero Boosters Méthode et ensemble pour la sélection d’un jeu d’aubes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748224B1 (fr) * 1996-05-02 1998-06-19 Snecma Outillage de montage d'un distributeur de turbomachine
US7222417B2 (en) * 2003-10-23 2007-05-29 Siemens Power Generation, Inc. Valve tooling system
DE102008051937B4 (de) 2008-10-16 2011-03-17 Siemens Aktiengesellschaft Verfahren zur Herstellung eines Leitrings
US9121283B2 (en) * 2011-01-20 2015-09-01 United Technologies Corporation Assembly fixture with wedge clamps for stator vane assembly

Also Published As

Publication number Publication date
PL2981678T3 (pl) 2017-10-31
EP2981678A1 (de) 2016-02-10
WO2014188002A1 (de) 2014-11-27

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