EP2851515A1 - Agencement de fixation d'aubes de turbine - Google Patents

Agencement de fixation d'aubes de turbine Download PDF

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Publication number
EP2851515A1
EP2851515A1 EP13185739.3A EP13185739A EP2851515A1 EP 2851515 A1 EP2851515 A1 EP 2851515A1 EP 13185739 A EP13185739 A EP 13185739A EP 2851515 A1 EP2851515 A1 EP 2851515A1
Authority
EP
European Patent Office
Prior art keywords
turbine
turbine blade
blade root
stemmstück
groove
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Withdrawn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
EP13185739.3A
Other languages
German (de)
English (en)
Inventor
Stefan Bentele
Ulrich Beul
Frank Brumbi
Oliver Ceranski
Manuel Ettler
Thomas Helmis
Markus Hofmann
Daniel Lindemann
Adam Maguire
Oliver Dr. Ricken
Andreas Stiehm
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 EP13185739.3A priority Critical patent/EP2851515A1/fr
Priority to PCT/EP2014/068354 priority patent/WO2015043874A1/fr
Priority to EP14759132.5A priority patent/EP3025029A1/fr
Priority to US14/915,686 priority patent/US20160194970A1/en
Publication of EP2851515A1 publication Critical patent/EP2851515A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/246—Fastening of diaphragms or stator-rings
    • 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
    • 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
    • F01D5/3092—Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers
    • 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
    • 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
    • F05D2220/31—Application in turbines in steam 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
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
    • 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
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/12—Fluid guiding means, e.g. vanes
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/502—Thermal properties
    • F05D2300/5021—Expansivity
    • F05D2300/50212—Expansivity dissimilar

Definitions

  • the invention relates to an arrangement for mounting turbine blades, wherein the turbine blades have a turbine blade root which is fitted in a groove in a component, wherein between the turbine blade root and the component a Stemm forum is arranged.
  • Steam turbines as an embodiment of a turbomachine comprise comparatively many turbine blades, which are subdivided into moving blades and guide vanes. Blades are placed on the rotor and vanes in the housing. The vanes have a blade root, which is installed in a corresponding groove in the housing. The installation is usually done by hand, which means that an employee manually inserts the individual steam turbine vanes into the appropriate grooves with a suitable force. In addition, a caulking piece is caulked between the blade root and the groove to exert a force for fixation. Some vanes have shrouds that are twisted relative to the foot.
  • the Stemm consultancy is usually driven with hammer blows, which means a high expenditure of force and is associated with rapid fatigue of the employee concerned.
  • the invention seeks to remedy this situation.
  • the object of the invention is to provide an arrangement for which less effort has to be expended.
  • the invention proposes to carry out the Stemm thoroughlye for fixing the turbine blade of a bi-metal.
  • the Stemm thoroughlye should be designed straight at installation temperature and have a small oversize between 0.1mm and 0.2mm.
  • the turbine blades can be inserted in this case with little effort on the Stemm conductede.
  • the small excess is sufficient to bias the blade or jam and thus fix in its final position.
  • the temperature is necessarily increased in operation, resulting in a bending of the bi-metal in the direction of the turbine blade root. This means that a force is exerted by the bi-metal on the turbine blade root and the groove, resulting in a fixation.
  • FIG. 1 shows an arrangement for mounting turbine blades 2 in a groove 3 of a component 4.
  • the turbine blade 2 has a turbine blade root 5, which is fitted into the corresponding groove 3.
  • a Stemm merging 6 is arranged, wherein the Stemm facilitator 6 is a bi-metal.
  • the turbine blade 2 is designed as a turbine guide vane for a steam turbine. Likewise, the turbine blade 2 could be formed as a compressor blade for a gas turbine or a compressor.
  • the component 4 is formed as a housing, in particular inner casing of a steam turbine.
  • the FIG. 2 shows the Stemmmaschine 6 at installation temperature.
  • the Stemmmaschine 6 comprises a first material 7 and a second material 8, which is connected by rigid end connections 9 firmly together.
  • the first material 7 has a different thermal expansion behavior compared to the second material 8.
  • the geometric shape of the Stemm couples 6 is changed with an increase in the temperature, which in the FIG. 3 is shown.
  • the Stemm assert 6 shows a deflection in one direction. Since the Stemm poll 6 is arranged at installation temperature in a gap 10 between the turbine blade root 5 and the groove 3, carried by a temperature increase during operation, an increase in power between the turbine blade root 5 and the groove 3, resulting in a better fixation of the turbine blade 2.
  • Turbine vane shown has a trained as a hook foot turbine blade root 5. This has a pointing to a guide blade carrier 11 surface 12. In the guide blade carrier 11, a gap 13 is formed, in which the Stemm forum 6 is arranged.
  • the turbine blade root 5 has a substantially laterally arranged side surface 14, which is aligned substantially perpendicular to the surface 12.
  • the Stemm forum 6 is arranged in a laterally arranged gap 13, which leads to an additional fixation.
  • FIG. 5 shows a formed as a hammer foot turbine blade root 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP13185739.3A 2013-09-24 2013-09-24 Agencement de fixation d'aubes de turbine Withdrawn EP2851515A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13185739.3A EP2851515A1 (fr) 2013-09-24 2013-09-24 Agencement de fixation d'aubes de turbine
PCT/EP2014/068354 WO2015043874A1 (fr) 2013-09-24 2014-08-29 Ensemble permettant de fixer des aubes de turbine
EP14759132.5A EP3025029A1 (fr) 2013-09-24 2014-08-29 Ensemble permettant de fixer des aubes de turbine
US14/915,686 US20160194970A1 (en) 2013-09-24 2014-08-29 Arrangement for securing turbine blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13185739.3A EP2851515A1 (fr) 2013-09-24 2013-09-24 Agencement de fixation d'aubes de turbine

Publications (1)

Publication Number Publication Date
EP2851515A1 true EP2851515A1 (fr) 2015-03-25

Family

ID=49303725

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13185739.3A Withdrawn EP2851515A1 (fr) 2013-09-24 2013-09-24 Agencement de fixation d'aubes de turbine
EP14759132.5A Withdrawn EP3025029A1 (fr) 2013-09-24 2014-08-29 Ensemble permettant de fixer des aubes de turbine

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14759132.5A Withdrawn EP3025029A1 (fr) 2013-09-24 2014-08-29 Ensemble permettant de fixer des aubes de turbine

Country Status (3)

Country Link
US (1) US20160194970A1 (fr)
EP (2) EP2851515A1 (fr)
WO (1) WO2015043874A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7011952B2 (ja) * 2018-03-01 2022-01-27 三菱パワー株式会社 静翼セグメント、及びこれを備えている蒸気タービン

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3236021A1 (de) * 1981-11-10 1983-05-19 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Mit schaufeln versehener turbinenrotorkoerper
JPS61129405A (ja) * 1984-11-28 1986-06-17 Hitachi Ltd タ−ビン動翼固定方法
EP1085172A2 (fr) * 1999-09-17 2001-03-21 General Electric Company Fixation d'une aube en composite
EP2239423A1 (fr) * 2009-03-31 2010-10-13 Siemens Aktiengesellschaft Turbomachine axiale dotée d'un contrôle passif d'étanchéité en bout d'aube
EP2372095A1 (fr) * 2010-03-26 2011-10-05 Siemens Aktiengesellschaft Procédé et dispositif de fixation d'une aube à un rotor par un élément à mémoire de forme
WO2012156633A1 (fr) * 2011-05-17 2012-11-22 Snecma Roue à aubes de turbomachine
WO2013017805A1 (fr) * 2011-08-03 2013-02-07 Snecma Roue à aubes de turbomachine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2013512A (en) * 1933-03-11 1935-09-03 Laval Steam Turbine Co Guide vane and diaphragm construction for turbines
US2807435A (en) * 1951-06-12 1957-09-24 Fairchild Engine & Airplane Turbine stator blade
CH676735A5 (fr) * 1988-08-03 1991-02-28 Asea Brown Boveri
US7488153B2 (en) * 2002-07-01 2009-02-10 Alstom Technology Ltd. Steam turbine
EP1548232A1 (fr) * 2003-12-23 2005-06-29 Siemens Aktiengesellschaft Turbomachine avec un stator et procédé de fixation d'aubes statoriques dans le stator
DE102013213834A1 (de) * 2013-07-15 2015-02-19 MTU Aero Engines AG Verfahren zum Herstellen eines Isolationselements und Isolationselement für ein Gehäuse eines Flugtriebwerks

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3236021A1 (de) * 1981-11-10 1983-05-19 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Mit schaufeln versehener turbinenrotorkoerper
JPS61129405A (ja) * 1984-11-28 1986-06-17 Hitachi Ltd タ−ビン動翼固定方法
EP1085172A2 (fr) * 1999-09-17 2001-03-21 General Electric Company Fixation d'une aube en composite
EP2239423A1 (fr) * 2009-03-31 2010-10-13 Siemens Aktiengesellschaft Turbomachine axiale dotée d'un contrôle passif d'étanchéité en bout d'aube
EP2372095A1 (fr) * 2010-03-26 2011-10-05 Siemens Aktiengesellschaft Procédé et dispositif de fixation d'une aube à un rotor par un élément à mémoire de forme
WO2012156633A1 (fr) * 2011-05-17 2012-11-22 Snecma Roue à aubes de turbomachine
WO2013017805A1 (fr) * 2011-08-03 2013-02-07 Snecma Roue à aubes de turbomachine

Also Published As

Publication number Publication date
WO2015043874A1 (fr) 2015-04-02
EP3025029A1 (fr) 2016-06-01
US20160194970A1 (en) 2016-07-07

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