WO2012131449A1 - Device and method for securing cover bands to stator blades - Google Patents

Device and method for securing cover bands to stator blades Download PDF

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Publication number
WO2012131449A1
WO2012131449A1 PCT/IB2011/055191 IB2011055191W WO2012131449A1 WO 2012131449 A1 WO2012131449 A1 WO 2012131449A1 IB 2011055191 W IB2011055191 W IB 2011055191W WO 2012131449 A1 WO2012131449 A1 WO 2012131449A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
cover
blades
blade wheel
segments
Prior art date
Application number
PCT/IB2011/055191
Other languages
English (en)
French (fr)
Inventor
Vlastimil Sedlacek
Original Assignee
Vlastimil Sedlacek
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 Vlastimil Sedlacek filed Critical Vlastimil Sedlacek
Priority to EP11793493.5A priority Critical patent/EP2691608B1/en
Priority to CN201180025719.5A priority patent/CN102933796B/zh
Priority to BR112012016716-2A priority patent/BR112012016716B1/pt
Priority to PL11793493T priority patent/PL2691608T3/pl
Publication of WO2012131449A1 publication Critical patent/WO2012131449A1/en

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
    • 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
    • F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
    • F01D9/044—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators permanently, e.g. by welding, brazing, casting or the like
    • 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
    • F01D5/12—Blades
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/916—Mounting on supporting structures or systems on a stationary structure with provision for hoisting onto the structure
    • 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
    • F05D2230/60—Assembly methods
    • F05D2230/68—Assembly methods using auxiliary equipment for lifting or holding
    • 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
    • F05D2250/00—Geometry
    • F05D2250/30—Arrangement of components
    • F05D2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05D2250/313—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being perpendicular to each other
    • 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
    • F05D2250/00—Geometry
    • F05D2250/30—Arrangement of components
    • F05D2250/35—Arrangement of components rotated
    • 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
    • F05D2260/30—Retaining components in desired mutual position

Definitions

  • the invention involves a method for securing stator blade fixing covers and devices used for implementing the method.
  • stator wheel blades are fixed with a cover along their internal diameter.
  • the cover is not attached to the blades during the manufacturing process as it is only fixed to the blades after inserting and fixing the stator wheel in the turbine support where the stator wheels are fixed firmly.
  • Protruding rivets on stator blades must be manually protracted onto the individual small cover parts according to actual condition of blades fitting so that drilling of the openings for placing the cover parts on the specified number of rivets is carried out according to it.
  • Such drilled openings are used for inserting the rivets located at the end of stator blades.
  • the opening and rivet tolerances are so small that some of the rivets have to be forced into the openings using a brute force while both the fixing rivet and the actual stator blades are damaged.
  • a device for implementing the method for securing the stator blade fixing covers is not known and the method is still being implemented using a combination of a number of procedures and devices, especially the hand held riveting hammer.
  • the disadvantages are prevented by the method for stator blade fixing covers while its principle lies in inserting the blades in the blade wheel freely without any fixing.
  • the blade wheel is located on the rotating segments and side-secured by the top segments.
  • the blade rivets are inserted in the cover one after another.
  • the blade with its bottom part inserted in the blade wheel, together with the blade wheel, stands on a firm surface and is secured in the cover by clenching the rivet with a riveting head.
  • the entire blade wheel is rotated using the rotating segments to secure the next rivet, i.e. the entire wheel is rotated so that the next blade is in a position perpendicular to the solid surface again.
  • the procedure is applied until all blade rivets in the cover are removed.
  • the greatest advantage of the method for securing the stator blade fixing covers and implementing the method is the fact that it is a controlled riveting process where the power is applied accurately and the rivets are not overloaded. Riveting is always performed in the rivet axis. It achieves high accuracy allowing avoidance of the stator blade deformation when placing the actual cover on the rivets. Thanks to using the device for implementing the method, the worker is not exposed to strong vibrations during manual riveting and their health is not being damaged.
  • fig. 1 shows the device for implementation of securing the stator blade fixing covers seen from the front.
  • the method for securing stator blade fixing covers is carried out by blades 5 being freely inserted in the blade wheel 4 without any fixing.
  • the actual blade wheel 4 is located at the sides on the rotating segments 6 and side-secured by the top segments 7, while, at the same time, its bottom side stands on a solid surface 2.
  • Rivets 8 of the blades 5 are inserted into the cover 3, while the blade 5 is inserted in the blade wheel 4, so that it stands on the solid surface 2.
  • the blade is secured in the cover 3 by removing the rivet 8 using a rivet head I .
  • the entire blade wheel 4 is rotated using the rotating segments 6 to secure the next rivet 8. This method is applied until all the blades 5 are fixed in the cover 3.
  • the device for implementing the method for securing the stator blade fixing covers is composed of non-indicated frame with the rotating segments 6 and top segments 7 placed on it for fixing the blade wheel 4 that always stands with the bottom perpendicularly inserted blade 5 on a solid surface 2.
  • the riveting head 1 is located in the internal circular cover area 3.
  • the blade wheel 4 is placed on the rotating segments 6 and solid surface 2. It is secured from side movement by the top segments 7.
  • the blades 5 are inserted into the blade wheel in such a way that the rivets 8 are positioned towards the wheel centre.
  • the blade 5 rivets 8 prepared in such way are placed into the cover 3 openings prepared in advance.
  • the riveting head 1 located in the internal area of the blade wheel 4 and as a matter of fact in the internal area of the cover 3, removes the rivet 8 causing its deformation hence fixing the cover to the blade 5.
  • the blade 5 under such application is located on the solid surface 2 a, together with the blade wheel 4, it sits directly on it. Thus, the least dissipating energy transfer is used. Further, the entire blade wheel is rotated using the rotating segments 6 in such a way that the next blade can be secured. This is applied until all the blades are secured. When this process is complete, the blade wheel 4 is removed and blades 5 are secured in the actual blade wheel 4.
  • the invention can be applied in the current spacing ring manufacturing allowing the production of ready-made spacing rings with fixed blades, including their covers.
  • the method developed is more effective, faster, as well as less costly financial-wise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Manufacture Of Motors, Generators (AREA)
PCT/IB2011/055191 2011-03-31 2011-11-18 Device and method for securing cover bands to stator blades WO2012131449A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11793493.5A EP2691608B1 (en) 2011-03-31 2011-11-18 Device and method for securing cover bands to stator blades
CN201180025719.5A CN102933796B (zh) 2011-03-31 2011-11-18 安装定子叶片固定罩的方法及使用该方法的装置
BR112012016716-2A BR112012016716B1 (pt) 2011-03-31 2011-11-18 método para prender coberturas de fixação de pá de estator e dispositivo para implantar o método
PL11793493T PL2691608T3 (pl) 2011-03-31 2011-11-18 Urządzenie i sposób mocowania pokryw zabezpieczających do łopatek stojana

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2011-181A CZ305366B6 (cs) 2011-03-31 2011-03-31 Způsob montáže statorových lopatek turbíny a jejich zajištění pomocí bandáže a zařízení k provádění tohoto způsobu
CZPV2011-181 2011-03-31

Publications (1)

Publication Number Publication Date
WO2012131449A1 true WO2012131449A1 (en) 2012-10-04

Family

ID=44351970

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2011/055191 WO2012131449A1 (en) 2011-03-31 2011-11-18 Device and method for securing cover bands to stator blades

Country Status (6)

Country Link
EP (1) EP2691608B1 (cs)
CN (1) CN102933796B (cs)
BR (1) BR112012016716B1 (cs)
CZ (1) CZ305366B6 (cs)
PL (1) PL2691608T3 (cs)
WO (1) WO2012131449A1 (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6082285B2 (ja) * 2013-03-14 2017-02-15 三菱日立パワーシステムズ株式会社 静翼環の取外・取付方法、及びこの方法に用いる静翼セグメントの補助支持装置
CN109372599B (zh) * 2018-11-26 2021-03-16 东方电气集团东方汽轮机有限公司 一种用于组装汽轮机静子部件的六向调节支撑装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137620A (en) * 1976-10-14 1979-02-06 Julius Beusing Apparatus for connecting a cover band to guide blading of a turbomachine
US4437213A (en) * 1982-08-19 1984-03-20 Transamerica Delaval Inc. Means for tenon-forming a shroud to a turbine rotor
EP0393567A1 (fr) * 1989-04-21 1990-10-24 Gec Alsthom Sa Procédé et dispositif pour le rivetage d'un bandage aux sommets d'ailettes montées sur un rotor
US20070074554A1 (en) * 2005-09-30 2007-04-05 Roberts Dennis W Method and apparatus for self indexing portable automated tenon peening

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831692A1 (de) * 1988-09-17 1989-03-02 Bbc Brown Boveri & Cie Verfahren zum verbinden von deckplatte und/oder fussstueck einerseits mit dem schaufelblatt andererseits einer turbinenschaufel mittels eines loet- oder fuegeprozesses
US7034262B2 (en) * 2004-03-23 2006-04-25 General Electric Company Apparatus and methods for repairing tenons on turbine buckets
EP1724443A1 (de) * 2005-05-20 2006-11-22 ABB Turbo Systems AG Düsenring
US7771164B2 (en) * 2006-12-18 2010-08-10 General Electric Company Method and system for assembling a turbine engine
US20090220331A1 (en) * 2008-02-29 2009-09-03 General Electric Company Turbine nozzle with integral impingement blanket
US20100186415A1 (en) * 2009-01-23 2010-07-29 General Electric Company Turbulated aft-end liner assembly and related cooling method
CN201669367U (zh) * 2010-05-07 2010-12-15 中国长江动力公司(集团) 圆盘类叶轮铆接装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137620A (en) * 1976-10-14 1979-02-06 Julius Beusing Apparatus for connecting a cover band to guide blading of a turbomachine
US4437213A (en) * 1982-08-19 1984-03-20 Transamerica Delaval Inc. Means for tenon-forming a shroud to a turbine rotor
EP0393567A1 (fr) * 1989-04-21 1990-10-24 Gec Alsthom Sa Procédé et dispositif pour le rivetage d'un bandage aux sommets d'ailettes montées sur un rotor
US20070074554A1 (en) * 2005-09-30 2007-04-05 Roberts Dennis W Method and apparatus for self indexing portable automated tenon peening

Also Published As

Publication number Publication date
BR112012016716A2 (pt) 2018-06-05
BR112012016716B1 (pt) 2020-11-10
CZ2011181A3 (cs) 2011-08-10
PL2691608T3 (pl) 2020-02-28
CN102933796A (zh) 2013-02-13
EP2691608B1 (en) 2019-07-17
EP2691608A1 (en) 2014-02-05
CZ305366B6 (cs) 2015-08-19
CN102933796B (zh) 2015-11-25

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