WO2014188002A1 - Dispositif de retenue - Google Patents

Dispositif de retenue Download PDF

Info

Publication number
WO2014188002A1
WO2014188002A1 PCT/EP2014/060828 EP2014060828W WO2014188002A1 WO 2014188002 A1 WO2014188002 A1 WO 2014188002A1 EP 2014060828 W EP2014060828 W EP 2014060828W WO 2014188002 A1 WO2014188002 A1 WO 2014188002A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
guide ring
support plate
holding device
holding
Prior art date
Application number
PCT/EP2014/060828
Other languages
German (de)
English (en)
Inventor
Klaus BLÖDEL
Peter Clement
Jens Göhler
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PL14728136T priority Critical patent/PL2981678T3/pl
Priority to EP14728136.4A priority patent/EP2981678B1/fr
Publication of WO2014188002A1 publication Critical patent/WO2014188002A1/fr

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
    • 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 are 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 radially inner ends of the guide vanes are also connected to an inner guide ring provided there - also called shroud - in order to seal the fluid channel against the turbine shaft, to reduce gap losses and to mechanically connect a plurality of guide vanes for influencing the vibration behavior.
  • 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 known for example from DE 10 2008 051 937 B4. In order to rivet the vanes reasonably and stably, a 90 ° angle must be provided between the rivet axis and the top surface of the shroud against which the blade face is placed.
  • 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 tube.
  • 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.
  • 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. However, such a locking device can be omitted if the adjusting device, via which the support plate in vertical
  • the support means may be fixedly mounted separately from the frame. According to a preferred embodiment, however, it is fixed to the frame and, if appropriate, can be set up with respect to it so that the rear contact surface defined by it assumes 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 can be provided, for example, on a cross slide arrangement.
  • 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 device may further comprise retaining elements which are formed and positioned or positionable to hold, 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 push them.
  • 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 means of the adjustment possibility, the holding elements can each be correspondingly positioned according to the size of the outer guide ring.
  • 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 according to the invention 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 so as to make a rivet connection between a vane fixed to an outer guide ring positioned on the platen and an inner guide ring.
  • FIG. 4 shows an inner guide ring, which is vernietbar with the guide vanes of the arrangement shown in Figure 3.
  • a riveting apparatus according to the present invention is shown.
  • This serves to produce 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 shown in Figure 3, at their radially inner ends with a inner guide ring 3 - also called shroud - to connect, namely to rivet.
  • the inner guide ring 3 as can be seen in Figure 4, corresponding holes 3a, which of the radially inside lie ing ends of the vanes 3, which are formed as rivet tap la, 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 support plate 7, which is adjustable in the vertical direction on the frame by means of a hydraulic or mechanical actuating device not shown in detail.
  • 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 contact surface of the rear wall 8a.
  • the support rollers 9 are mounted on a carriage IIa and rotatably supported, which is parallel to the support surface defined by the rear wall 8a adjustable in the horizontal direction, so that the distance of the support rollers 9 of the support plate 7 is changeable.
  • 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 IIa is in turn mounted to form a cross slide assembly on a carriage IIb, which is adjustable perpendicular to the rear wall 9.
  • 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 retaining holder 13 can be moved to fix an outer guide ring 2 positioned on the support rollers 9 or the support plate 7, around the outer guide ring 2 in its lower circumferential region in which the outer guide ring 2 engages the support plate 7 comes into contact to press against the abutment surface of the rear wall 8a.
  • the fixing device 12 comprises holding elements 14, which are spaced from the support plate 7 on the rear wall 8a of
  • Support means 8 are fixed 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.
  • 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 perpendicular to the plane of the contact surface
  • Axes 18 are rotatable.
  • 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 comprises a pressing tool which is located above the geplatte is positioned, wherein the wobble riveting unit is operable to move the pressing tool vertically in the direction of the support plate 7 and so 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 to manufacture.
  • an outer guide ring 2 with guide vanes 1 provided thereon is positioned on the support rollers 9 of the holding device 4.
  • the support rollers 9 are positioned by adjusting the carriages IIa, IIb so that the axis of the rivet pin of a guide blade 1 to be riveted is approximately coaxial to the adjustment axis of the pressing tool.
  • 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.
  • 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 lower the pressing 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 in order to position a further guide slide 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)

Abstract

L'invention concerne un dispositif de retenue (4) destiné à retenir et à positionner une couronne directrice extérieure (2) à laquelle des aubes directrices (1) sont fixées pendant un processus de rivetage destiné à monter une couronne directrice intérieure (3) sur les aubes directrices (1). Le dispositif comporte un châssis (6), une plaque d'appui (7) montée mobile dans le sens vertical sur le châssis (6), un système d'appui (8) positionné sur la face arrière de la plaque d'appui (7) et définissant une surface d'appui arrière pour la couronne directrice extérieure (2), une paire d'éléments d'appui disposés sur les faces opposées de la plaque d'appui (7) devant la surface d'appui arrière du système d'appui (8), ainsi qu'un système de fixation (12) configuré pour retenir une couronne directrice extérieure (2) positionnée sur la plaque d'appui pendant un processus de rivetage contre la surface d'appui arrière du système d'appui (8), en particulier pour la pousser contre ce dernier (7).
PCT/EP2014/060828 2013-05-24 2014-05-26 Dispositif de retenue WO2014188002A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL14728136T PL2981678T3 (pl) 2013-05-24 2014-05-26 Przyrząd przytrzymujący
EP14728136.4A EP2981678B1 (fr) 2013-05-24 2014-05-26 Dispositif de retenue

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013209694.1 2013-05-24
DE102013209694 2013-05-24

Publications (1)

Publication Number Publication Date
WO2014188002A1 true WO2014188002A1 (fr) 2014-11-27

Family

ID=50884892

Family Applications (1)

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

Country Status (3)

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

Cited By (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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918356A (en) * 1996-05-02 1999-07-06 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Tools for mounting a turbo aero engine distributor
US20050086788A1 (en) * 2003-10-23 2005-04-28 Siemens Westinghouse Power Corporation Valve tooling system and method of employing same
DE102008051937B4 (de) 2008-10-16 2011-03-17 Siemens Aktiengesellschaft Verfahren zur Herstellung eines Leitrings
US20130014389A1 (en) * 2011-01-20 2013-01-17 United Technologies Corporation Assembly fixture with wedge clamps for stator vane assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918356A (en) * 1996-05-02 1999-07-06 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Tools for mounting a turbo aero engine distributor
US20050086788A1 (en) * 2003-10-23 2005-04-28 Siemens Westinghouse Power Corporation Valve tooling system and method of employing same
DE102008051937B4 (de) 2008-10-16 2011-03-17 Siemens Aktiengesellschaft Verfahren zur Herstellung eines Leitrings
US20130014389A1 (en) * 2011-01-20 2013-01-17 United Technologies Corporation Assembly fixture with wedge clamps for stator vane assembly

Cited By (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

Also Published As

Publication number Publication date
PL2981678T3 (pl) 2017-10-31
EP2981678B1 (fr) 2017-05-03
EP2981678A1 (fr) 2016-02-10

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