EP2935805A1 - Roue à aubes et procédé de fabrication d'une aube - Google Patents

Roue à aubes et procédé de fabrication d'une aube

Info

Publication number
EP2935805A1
EP2935805A1 EP13786193.6A EP13786193A EP2935805A1 EP 2935805 A1 EP2935805 A1 EP 2935805A1 EP 13786193 A EP13786193 A EP 13786193A EP 2935805 A1 EP2935805 A1 EP 2935805A1
Authority
EP
European Patent Office
Prior art keywords
blade
paddle wheel
blade root
inlet
length
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Withdrawn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
EP13786193.6A
Other languages
German (de)
English (en)
Inventor
Andreas Föhrigen
Enno Jung
Christian Albrecht Koch
Udo Weber
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 EP13786193.6A priority Critical patent/EP2935805A1/fr
Publication of EP2935805A1 publication Critical patent/EP2935805A1/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Withdrawn legal-status Critical Current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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • F01D5/3015—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type with side plates
    • 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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • 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
    • F01D5/12—Blades
    • 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
    • F01D5/32—Locking, e.g. by final locking blades or keys
    • F01D5/326—Locking of axial insertion type blades by other means
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • 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
    • F05D2230/10—Manufacture by removing material
    • 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
    • F05D2230/50—Building or constructing in particular ways
    • 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
    • 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
    • F05D2260/00—Function
    • F05D2260/82—Forecasts
    • F05D2260/821—Parameter estimation or prediction
    • 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
    • Y10T29/49336—Blade making
    • Y10T29/49337—Composite blade

Definitions

  • the invention relates to a paddle wheel comprising a wheel disc with a disk element which comprises an inlet side and an exit side opposite the inlet side with substantially axial grooves distributed over the circumference and a plurality of blades each comprising a blade root, an outlet blade end face and an entry-side blade root end surface, wherein the
  • Blade root is provided from the inlet side of the disc member for attachment in the respective groove. Furthermore, the invention relates to a method for producing a blade by means of such a paddle wheel.
  • turbines In turbines, a flow medium is transported in a flow channel in order to gain energy from this.
  • turbine blades are arranged in the flow channel.
  • successively vane rings are formed alternately from vanes and rotor blades formed from blades arranged.
  • the vanes suitably direct the flow medium onto the blades, which are connected to a rotor and rotated so that kinetic energy of the flow medium is converted to rotational energy.
  • Such blades in turbomachines are often exposed to considerable mechanical stress. Especially at the same time high temperature and high speeds, such as in a gas turbine, it comes to a high material stress of the blade material. As a result, cracks may form in the blade material, which spread over time with continued stress.
  • a first object of the invention is the specification of a paddle wheel, which reduces or even avoids the above-mentioned problems.
  • a second object of the invention is the production of a blade with the aid of such a paddle wheel, in particular of a replacement blade in the revision of a turbine.
  • the first object is achieved with the specification of a paddle wheel comprising a wheel disc with a disc element according to the preamble of claim 1 by the following features, wherein on the outlet side a first contact plate is provided, so that the outlet side
  • At least one thrust piece shim is provided in the groove for the axial fixation of the shovel foot in the one groove
  • a second abutment plate is provided, so that the inlet side Schaufelfußstirn imagery at least partially rests against this second contact sheet,
  • At least the disc element is connected to the second abutment plate by a radial connecting element so that thereby a force is exerted on the disc element and whereby a force is transmitted through the Druck Suitebeilage at least on the blade root, whereby the blade root fixed in a radially outermost position in the groove is.
  • the pressure pieces transmit the force which results from the tightening of the radial connection elements to the blade roots and thus contribute to the secured, radially outermost position of the blade roots. They also prevent damage to the blade roots, in particular the coating.
  • the blades are thus fixed axially and radially fixed. This allows the blades to be manufactured within the tolerance; Deviations due to inadequate fixation no longer occur.
  • the paddle wheel according to the invention an accurate production is possible because the blades can no longer move in the grooves.
  • the first abutment sheet lies completely against the exit-side blade root end face and / or the second abutment sheet completely against the entry-side blade root end face. This increases the safety of the axial fixation.
  • the second contact sheet is connected by releasable merger elements, in particular screws, with the inlet side.
  • the first contact plate is connected by non-detachable connecting elements with the outlet side.
  • the blade feet are therefore pushed only from the inlet side into the grooves.
  • the risk of damaging the blade feet is avoided by, for example, a further screwing the first bearing plate also.
  • the second object is achieved by specifying a method for producing a blade by means of a paddle wheel as described above, wherein the paddle wheel comprises at least one blade to be manufactured in an actual state with an actual length, with the following steps :
  • Provision of production specifications by a time-discrete model comprising a plurality of model sizes, - Making the at least one blade on the paddle wheel to a desired state with a desired length.
  • both the rotor and the surrounding components usually change in their dimensions due to the acceleration. Therefore, the blades to be replaced must be adapted in a revision to the new conditions. This was previously possible only with much effort.
  • the blades are ready for replacement before the revision of a turbine and can be installed directly. An unwanted revision extension is therefore avoided. If the method is used in conjunction with the paddle wheel according to the invention, all blades can be made equal length; the variance of the blade length is minimized.
  • a desired-actual deviation of the actual blade length and the desired blade length is determined. This can be manufactured within the tolerance.
  • the changes in the dimensions of the turbine at least partially flow in as a model size.
  • an original, predetermined reference value of the blade length flows in as a model size.
  • FIG. 2 shows a partial section of a paddle wheel without a blade from the outlet side with thrust piece inserts
  • FIG. 3 shows a partial section of a paddle wheel with blades from the inlet side.
  • the impeller according to the invention has a wheel disc 1 with a disc element 2 which comprises an inlet side 3 and an outlet side 3 opposite the outlet side 4 with substantially axial grooves 5 distributed over the circumference. Furthermore, the impeller comprises a plurality of blades 6, each having a blade root 7, an outlet-side blade root end surface 9 and an inlet-side Schaufelfußstirn simulation 8, a Schaufelfußober Structure 10 and a blade top 11.
  • a first abutment plate 12 is provided on the outlet side 4, in such a way that the outlet-side blade root end face 9 bears completely against this first abutment plate 12.
  • the first contact plate 12 is connected to the disc element 2. This can also be an insoluble connection, eg a welded joint. 2 or 2 Druck Suitebeilagen 13 (FIG 2) are provided for the axial fixation of the blade root 7 in the grooves 5.
  • the pressure pad shims 13 may be made of plastic and are inserted with the blade roots 7 in the grooves 5.
  • the thrust piece inserts 13 (FIG. 2) can, however, be pushed into the grooves 5 in front of the blade roots 7, and subsequently only the blade roots 7. Subsequently, the inlet side becomes a second one Attachment plate 14 mounted. This can be, for example, by means of a screw 16.
  • the inlet-side blade root end face 8 lies completely against this second abutment sheet 14 (FIG. 3).
  • the inlet-side blade root end face 8 rests only partially on this second abutment sheet 14.
  • Blades 6 fixed axially.
  • the disk element 2 is connected to the second contact plate 14 by radial connecting elements 15.
  • the radial connecting elements 15 may be connected to the disc element 2 and the second contact plate 14 and the first contact plate 12.
  • the connecting element 15 is attached to the second plant sheet 14, forming tension.
  • the impeller of the method is the above-mentioned impeller with a wheel disc 1 and Scheibenelemen-
  • the blade wheel comprises at least one blade to be manufactured in an actual state with an actual length.
  • the method comprises in a first step the provision of production specifications by a time-discrete model with a plurality of model sizes, and in a second step, the manufacture of the blades 6 using the time-discrete model to a desired state with a desired length.
  • One of the model sizes is the specification of an original, predetermined reference value of the display length, that is to say the original blade length
  • Blades 6 made to this target blade length, in particular by grinding.
  • the blades 6 can no longer slide in the grooves 5.
  • a desired-actual deviation of the actual blade length with the desired blade length is determined.
  • the inventive method in conjunction with the paddle wheel according to the invention therefore, the blades are ready for replacement before the revision of a turbine. An unwanted revision extension is therefore avoided.
  • the blades 6 can be manufactured within the tolerance by the paddle wheel according to the invention. The tolerance deviation of the blade length is thus avoided or at least minimized.
  • all manufactured blades 6 are the same length; There is no divergence in the length of the blades 6 more.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne une roue à aubes comportant un disque de roue muni d'un élément de disque (2). Ladite roue à aube présente un côté entrée (3) et un côté sortie (4) opposé au côté entrée (3). La roue à aubes comporte également des gorges (5) sensiblement axiales réparties sur la circonférence ainsi qu'une pluralité d'aubes (6) comportant chacune un pied d'aube (7), une face frontale de pied d'aube (9) côté sortie et une face frontale de pied d'aube (8) côté entrée. Le pied d'aube (7) est destiné à être placé dans la gorge respective (5) depuis le côté entrée (3) de l'élément de disque (2). Une première plaque de butée (12) est disposée côté sortie (4). Au moins une garniture de réception de pression (13) est disposée dans la gorge (5). Une seconde plaque de butée (14) est disposée côté entrée (3). L'élément de disque (2) au moins est relié à la seconde plaque de butée (14) au moyen d'un élément de liaison radial (15) de sorte que le pied d'aube (7) est fixé dans la gorge (5) dans une position radialement la plus extérieure. L'invention concerne en outre un procédé de fabrication d'une aube à l'aide d'une telle roue à aubes.
EP13786193.6A 2013-02-19 2013-10-23 Roue à aubes et procédé de fabrication d'une aube Withdrawn EP2935805A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13786193.6A EP2935805A1 (fr) 2013-02-19 2013-10-23 Roue à aubes et procédé de fabrication d'une aube

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13155707.6A EP2767678A1 (fr) 2013-02-19 2013-02-19 Roue aubagée et procédé de fabrication d'une aube
EP13786193.6A EP2935805A1 (fr) 2013-02-19 2013-10-23 Roue à aubes et procédé de fabrication d'une aube
PCT/EP2013/072125 WO2014127859A1 (fr) 2013-02-19 2013-10-23 Roue à aubes et procédé de fabrication d'une aube

Publications (1)

Publication Number Publication Date
EP2935805A1 true EP2935805A1 (fr) 2015-10-28

Family

ID=47748460

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13155707.6A Withdrawn EP2767678A1 (fr) 2013-02-19 2013-02-19 Roue aubagée et procédé de fabrication d'une aube
EP13786193.6A Withdrawn EP2935805A1 (fr) 2013-02-19 2013-10-23 Roue à aubes et procédé de fabrication d'une aube

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13155707.6A Withdrawn EP2767678A1 (fr) 2013-02-19 2013-02-19 Roue aubagée et procédé de fabrication d'une aube

Country Status (3)

Country Link
US (1) US20150369063A1 (fr)
EP (2) EP2767678A1 (fr)
WO (1) WO2014127859A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160230579A1 (en) * 2015-02-06 2016-08-11 United Technologies Corporation Rotor disk sealing and blade attachments system
CN105065065A (zh) * 2015-08-07 2015-11-18 山东青能动力股份有限公司 一种枞树型叶根动叶片锁紧装置及其装配工艺
FR3057908B1 (fr) * 2016-10-21 2019-11-22 Safran Aircraft Engines Ensemble rotatif d'une turbomachine muni d'un systeme de maintien axial d'une aube
FR3139855A1 (fr) * 2022-09-16 2024-03-22 Safran Aircraft Engines Ensemble rotatif de turbomachine comprenant un dispositif de retenue axiale de pieds d’aube dans les alvéoles d’un disque de rotor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572970A (en) * 1969-01-23 1971-03-30 Gen Electric Turbomachinery blade spacer
US4265595A (en) * 1979-01-02 1981-05-05 General Electric Company Turbomachinery blade retaining assembly
US4512115A (en) * 1983-06-07 1985-04-23 United Technologies Corporation Method for cylindrical grinding turbine engine rotor assemblies
US5123813A (en) * 1991-03-01 1992-06-23 General Electric Company Apparatus for preloading an airfoil blade in a gas turbine engine
US5191711A (en) * 1991-12-23 1993-03-09 Allied-Signal Inc. Compressor or turbine blade manufacture
GB2410531B (en) * 2004-01-29 2006-03-01 Rolls Royce Plc Fan blade disk assembly
US7927069B2 (en) * 2006-11-13 2011-04-19 United Technologies Corporation Hoop seal with partial slot geometry
US7806662B2 (en) * 2007-04-12 2010-10-05 Pratt & Whitney Canada Corp. Blade retention system for use in a gas turbine engine
US8205335B2 (en) * 2007-06-12 2012-06-26 United Technologies Corporation Method of repairing knife edge seals
US8186961B2 (en) * 2009-01-23 2012-05-29 Pratt & Whitney Canada Corp. Blade preloading system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014127859A1 *

Also Published As

Publication number Publication date
US20150369063A1 (en) 2015-12-24
EP2767678A1 (fr) 2014-08-20
WO2014127859A1 (fr) 2014-08-28

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