EP2933436A1 - Disque de roue doté d'au moins une tôle d'étanchéité - Google Patents

Disque de roue doté d'au moins une tôle d'étanchéité Download PDF

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Publication number
EP2933436A1
EP2933436A1 EP14164724.8A EP14164724A EP2933436A1 EP 2933436 A1 EP2933436 A1 EP 2933436A1 EP 14164724 A EP14164724 A EP 14164724A EP 2933436 A1 EP2933436 A1 EP 2933436A1
Authority
EP
European Patent Office
Prior art keywords
wheel disc
sealing plate
screw
recess
circumferential direction
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Withdrawn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
EP14164724.8A
Other languages
German (de)
English (en)
Inventor
Sascha Dungs
Harald Hoell
Kevin KAMPKA
Karsten Kolk
Marc Lange
Peter Schröder
Vyacheslav Veitsman
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 EP14164724.8A priority Critical patent/EP2933436A1/fr
Priority to CN201580020013.8A priority patent/CN106232942B/zh
Priority to US15/302,019 priority patent/US20170191371A1/en
Priority to EP15713737.3A priority patent/EP3077627B1/fr
Priority to PCT/EP2015/056985 priority patent/WO2015158542A1/fr
Priority to JP2016551167A priority patent/JP2017527745A/ja
Publication of EP2933436A1 publication Critical patent/EP2933436A1/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Withdrawn legal-status Critical Current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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
    • 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/005—Sealing means between non relatively rotating elements
    • F01D11/006—Sealing the gap between rotor blades or blades and rotor
    • 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
    • F01D5/30—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
    • F05D2220/32—Application in turbines in gas 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
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/24—Rotors for 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • 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
    • F05D2260/31—Retaining bolts or nuts
    • 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
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking

Definitions

  • the present invention relates to a wheel disc with at least one sealing plate which is slidably mounted on the wheel disc in the circumferential direction, and at least one securing device which is designed such that it secures the at least one sealing plate in the intended mounted state against displacement in the circumferential direction of the wheel disc ,
  • Such wheel discs are known in the art. They form components of rotors, such as gas turbine rotors or the like. Normally, a plurality of sealing plates are slidably disposed in the circumferential direction of a wheel disc.
  • the sealing plates can be used for example with their radially inwardly facing edge in a provided on the wheel disc circumferential groove.
  • Such can be formed, for example, by a screw extending through a passage opening provided in the sealing plate and a threaded bore provided on the wheel disc, into which the screw is screwed in the intended mounted state.
  • a problem with such a safety device is that the notch effect associated with the threaded hole provided in the wheel disc can cause problems.
  • screws often can not be solved in case of service, resulting in a costly boring of the compound by itself.
  • the present invention provides a wheel disc of the type mentioned above, which is characterized in that the securing device has a screwed directly or indirectly with the sealing plate and extending through this screw and a recess provided on the wheel disc having the free end the screw receives in the intended mounted state and whose wall limits movement of the screw in the circumferential direction.
  • the screw according to the invention is bolted to the sealing plate and not to the wheel disc, it is prevented that the wheel disc, which forms the much more expensive component compared to the sealing plate, is affected by a notch effect caused by a thread. Furthermore, a screw that is bolted to the sealing plate, relatively easy to remove in case of service without damaging the wheel, even if the screw can not be solved.
  • the recess is preferably formed as a transversely extending to the circumferential direction slot in the wheel disc. Accordingly, production-related tolerances, thermal expansion or the like can be easily compensated.
  • the screw is screwed into a provided with an internal thread sleeve for indirectly screwing the screw with the sealing plate, which is held against rotation in a provided on the sealing plate through hole.
  • a sleeve is advantageous in that it can be replaced in case of service in a simple manner. Also can ensure proper fastening of the screw on such a sleeve be even if the sealing plate has only a small thickness.
  • the sleeve has at least one radially outwardly projecting projection, which is inserted during the insertion of the sleeve into the passage opening in a corresponding recess extending from the passage opening.
  • a structurally simple anti-rotation is achieved, which also can be easily installed.
  • the recess of the passage opening is advantageously accessible from that side of the sealing plate, which faces in the intended mounted state of the recess provided on the wheel disc.
  • the sleeve is advantageously mounted from the back of the sealing plate, so that the sleeve is automatically secured when screwing the screw on the sealing plate.
  • a captive which secures the screw in the intended mounted state on the sealing plate. In this way it can be prevented that the screw accidentally loosened during normal operation of the wheel disc.
  • the captive on a retaining ring which is provided with radially outwardly projecting securing projections which engage in the intended mounted state in such a manner formed on the screw and the sealing plate receiving recesses that twisting both the screw and the locking ring is prevented.
  • the receiving recesses may, for example, each extend in the axial direction such that the securing projections can be bent after tightening the screw in the receiving recesses.
  • the screw is formed at its free end, with which it engages in the intended mounted state in the recess of the wheel disc, rounded. Accordingly, any damage to the wheel disc can be prevented by the screw.
  • the at least one sealing plate is held in a form-fitting manner on the wheel disc.
  • the at least one sealing plate may have a bead-like edge region, which is received in a correspondingly formed undercut receiving groove of the wheel disc.
  • FIGS. 1 to 9 show a wheel disc 1 according to an embodiment of the present invention or components thereof.
  • the wheel disc 1 comprises a plurality of sealing plates 2, which are fastened to this displaceable in the circumferential direction.
  • the radially inwardly facing edge of the sealing plate 2 is for this purpose provided with a bead 3 which is slidably received in an undercut receiving groove 4 in the circumferential direction, wherein the receiving groove 4 is formed by the wheel disc 1 on the one hand and by a fastened to the wheel disc 1 closure piece 5 on the other , which in this case has an L-shaped cross-section.
  • each sealing plate 2 is provided with at least one securing device 6, the individual components as a screw 7, provided on the wheel disc 1 recess 8, a sleeve 9 and a Circlip 10 has.
  • the screw 7 comprises a screw head 11 and a screw shank 12. Centered on the screw head 11, a hexagon key receptacle 13 is arranged in a known manner. Along the circumference of the screw head 11 are uniformly distributed four receiving recesses 14 are formed, which extend in the axial direction through the screw head 11.
  • the screw shaft 12 is provided with external thread 15 and formed rounded at its free end.
  • the recess 8 of the wheel disc 1 serves to receive the screw 7, as will be explained in more detail below, and has corresponding dimensions. It is designed as a transversely extending to the circumferential direction slot.
  • the sleeve 9 is provided with an internal thread 16 which is matched to the external thread 15 of the screw 7.
  • the sleeve 9, which is inserted in the intended state in a through hole 17 of the sealing plate 2, comprises at its rear free end a radially outwardly projecting projection 18 which is inserted during the insertion of the sleeve 9 in the through hole 17 in a corresponding recess 19, which extends from the passage opening 17 and is accessible from that side of the sealing plate 2, which faces the recess 8.
  • the locking ring 10 is provided with four radially outwardly projecting, uniformly distributed along the circumference securing projections 20, whose dimensions are chosen such that they can be accommodated in the receiving recesses 14 of the screw 7 on the one hand and in receiving recesses 21 on the other hand, at the front of the sealing plate 2 are arranged on opposite sides of the passage opening 17.
  • the bead 3 is arranged at the intended position on the wheel disc 1 in a first step such that the passage opening of the sealing plate 2 and the recess 8 of the wheel disc are arranged in alignment with each other, whereupon the closure piece 5 is positioned and is attached to the wheel disc 1. Now, the bead 3 is slidably received in the undercut receiving groove 4 in the circumferential direction.
  • a significant advantage associated with the securing device 6 according to the invention is that the wheel disc 1, which forms a relatively expensive component, is in no way impaired by notch effects. Furthermore, the securing device 6 can be easily solved or replaced during maintenance. Thanks to the fact that the recess 8 is formed as a slot, manufacturing tolerances and thermal movements of the sealing plate 2 can be compensated. Overall, a very simple and inexpensive construction is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Connection Of Plates (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
EP14164724.8A 2014-04-15 2014-04-15 Disque de roue doté d'au moins une tôle d'étanchéité Withdrawn EP2933436A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP14164724.8A EP2933436A1 (fr) 2014-04-15 2014-04-15 Disque de roue doté d'au moins une tôle d'étanchéité
CN201580020013.8A CN106232942B (zh) 2014-04-15 2015-03-31 具有至少一个密封板的轮盘
US15/302,019 US20170191371A1 (en) 2014-04-15 2015-03-31 Wheel disc with at least one sealing plate
EP15713737.3A EP3077627B1 (fr) 2014-04-15 2015-03-31 Disque de roue doté d'au moins une tôle d'étanchéité
PCT/EP2015/056985 WO2015158542A1 (fr) 2014-04-15 2015-03-31 Disque de roue pourvu d'une ou plusieurs plaques d'étanchéité
JP2016551167A JP2017527745A (ja) 2014-04-15 2015-03-31 少なくとも１つの密閉プレートを有するホイールディスク

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14164724.8A EP2933436A1 (fr) 2014-04-15 2014-04-15 Disque de roue doté d'au moins une tôle d'étanchéité

Publications (1)

Publication Number Publication Date
EP2933436A1 true EP2933436A1 (fr) 2015-10-21

Family

ID=50513703

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14164724.8A Withdrawn EP2933436A1 (fr) 2014-04-15 2014-04-15 Disque de roue doté d'au moins une tôle d'étanchéité
EP15713737.3A Not-in-force EP3077627B1 (fr) 2014-04-15 2015-03-31 Disque de roue doté d'au moins une tôle d'étanchéité

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15713737.3A Not-in-force EP3077627B1 (fr) 2014-04-15 2015-03-31 Disque de roue doté d'au moins une tôle d'étanchéité

Country Status (5)

Country Link
US (1) US20170191371A1 (fr)
EP (2) EP2933436A1 (fr)
JP (1) JP2017527745A (fr)
CN (1) CN106232942B (fr)
WO (1) WO2015158542A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2975219A1 (fr) * 2014-07-17 2016-01-20 Siemens Aktiengesellschaft Assemblage de disque de roue
CN107178395A (zh) * 2017-06-27 2017-09-19 东方电气集团东方汽轮机有限公司 一种用于透平叶片在叶轮轮槽中轴向定位的结构
EP3564489A1 (fr) 2018-05-03 2019-11-06 Siemens Aktiengesellschaft Rotor à surfaces de contact optimisées au niveau de forces centrifuges
CN109707719A (zh) * 2018-12-28 2019-05-03 天津市盛立达机械设备有限公司 双螺母抵紧锁死螺栓
EP3960987A1 (fr) * 2020-08-31 2022-03-02 Siemens Energy Global GmbH & Co. KG Ensemble rotor pour un rotor d'une turbine à gaz et turbine à gaz comprenant un tel ensemble rotor
US11542819B2 (en) * 2021-02-17 2023-01-03 Pratt & Whitney Canada Corp. Split ring seal for gas turbine engine rotor
US12018567B2 (en) * 2022-05-31 2024-06-25 Pratt & Whitney Canada Corp. Joint between gas turbine engine components with bonded fastener(s)

Citations (7)

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Publication number Priority date Publication date Assignee Title
DE1928184A1 (de) * 1968-06-24 1970-01-08 Westinghouse Electric Corp Befestigungs- und Kuehlanordnung fuer Laufschaufelkraenze von Turbomaschine,vorzugsweise Gasturbinen
JPS5835203A (ja) * 1981-08-28 1983-03-01 Hitachi Ltd バケツトロツク機構
US5030063A (en) * 1990-02-08 1991-07-09 General Motors Corporation Turbomachine rotor
US5263823A (en) * 1991-07-24 1993-11-23 Societe Nationale D'etude Et De Construction De Moteurs D'aviation (S.N.E.C.M.A.) Gas turbine engine impeller having an annular collar platform
US5277548A (en) * 1991-12-31 1994-01-11 United Technologies Corporation Non-integral rotor blade platform
EP1840338A1 (fr) * 2006-03-28 2007-10-03 Siemens Aktiengesellschaft Arrangement pour la fermeture axiale des palettes d'une turbine dans un rotor et gasturbine avec un tel arrangement
EP2518271A2 (fr) * 2011-04-26 2012-10-31 General Electric Company Ensemble adaptateur permettant de coupler des aubes de turbine à disques de rotor

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US3259161A (en) * 1963-11-12 1966-07-05 Rosan Eng Corp Fastener with captive locking ring
US3391721A (en) * 1966-01-20 1968-07-09 Rosan Eng Corp Insert having integral internal thread lock and method of making same
US3572966A (en) * 1969-01-17 1971-03-30 Westinghouse Electric Corp Seal plates for root cooled turbine rotor blades
US3721506A (en) * 1971-05-25 1973-03-20 Gen Electric Split-nut blade locking assembly
US3748060A (en) * 1971-09-14 1973-07-24 Westinghouse Electric Corp Sideplate for turbine blade
US3853425A (en) * 1973-09-07 1974-12-10 Westinghouse Electric Corp Turbine rotor blade cooling and sealing system
US3930751A (en) * 1974-07-05 1976-01-06 Carrier Corporation Bucket locking mechanism
US4483661A (en) * 1983-05-02 1984-11-20 General Electric Company Blade assembly for a turbomachine
JPS6247703U (fr) * 1985-09-13 1987-03-24
US5232323A (en) * 1992-09-28 1993-08-03 General Electric Company Removable threaded fastener with locking plate
FR2803623B1 (fr) * 2000-01-06 2002-03-01 Snecma Moteurs Agencement de retenue axiale d'aubes dans un disque
ITMI20021465A1 (it) * 2002-07-03 2004-01-05 Nuovo Pignone Spa Dispositivo di schermatura termica di facile montaggio per un accoppiamento tra una tubazione di raffreddamento ed una foratura passante rea
US7093835B2 (en) * 2002-08-27 2006-08-22 United Technologies Corporation Floating brush seal assembly
FR2850130B1 (fr) * 2003-01-16 2006-01-20 Snecma Moteurs Dispositif pour retenir un flasque annulaire contre une face radiale d'un disque
ATE391835T1 (de) * 2004-07-22 2008-04-15 Siemens Ag Sicherungsvorrichtung für eine an einer drehbaren rotorscheibe angeordneten laufschaufel einer strömungsmaschine, strömungsmaschine und verfahren zur montage und demontage einer laufschaufel an einer rotorscheibe einer strömungsmaschine
EP1944472A1 (fr) * 2007-01-09 2008-07-16 Siemens Aktiengesellschaft Partie axiale d'un rotor de turbine, élément d'étanchéité pour un rotor équipé d'aubes de rotor d'une turbine et rotor de turbine
US20090148298A1 (en) * 2007-12-10 2009-06-11 Alstom Technologies, Ltd. Llc Blade disk seal
FR2929660B1 (fr) * 2008-04-07 2012-11-16 Snecma Dispositif anti-usure pour rotor de turbomachine, bouchon formant dispositif anti-usure et rotor de compresseur de moteur a turbine a gaz comportant un bouchon anti-usure
EP2218873A1 (fr) * 2009-02-17 2010-08-18 Siemens Aktiengesellschaft Section de rotor pour un rotor d'une turbomachine, aube directrice pour une turbomachine et élément de blocage
FR2948725B1 (fr) * 2009-07-28 2012-10-05 Snecma Dispositif anti-usure d'un rotor de turbomachine
FR2955889B1 (fr) * 2010-01-29 2012-11-16 Snecma Moyen de blocage d'un flasque d'etancheite sur un disque de turbine
EP3015656A1 (fr) * 2014-10-30 2016-05-04 Siemens Aktiengesellschaft Agencement de disque de roue

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1928184A1 (de) * 1968-06-24 1970-01-08 Westinghouse Electric Corp Befestigungs- und Kuehlanordnung fuer Laufschaufelkraenze von Turbomaschine,vorzugsweise Gasturbinen
JPS5835203A (ja) * 1981-08-28 1983-03-01 Hitachi Ltd バケツトロツク機構
US5030063A (en) * 1990-02-08 1991-07-09 General Motors Corporation Turbomachine rotor
US5263823A (en) * 1991-07-24 1993-11-23 Societe Nationale D'etude Et De Construction De Moteurs D'aviation (S.N.E.C.M.A.) Gas turbine engine impeller having an annular collar platform
US5277548A (en) * 1991-12-31 1994-01-11 United Technologies Corporation Non-integral rotor blade platform
EP1840338A1 (fr) * 2006-03-28 2007-10-03 Siemens Aktiengesellschaft Arrangement pour la fermeture axiale des palettes d'une turbine dans un rotor et gasturbine avec un tel arrangement
EP2518271A2 (fr) * 2011-04-26 2012-10-31 General Electric Company Ensemble adaptateur permettant de coupler des aubes de turbine à disques de rotor

Also Published As

Publication number Publication date
EP3077627B1 (fr) 2017-11-01
EP3077627A1 (fr) 2016-10-12
US20170191371A1 (en) 2017-07-06
WO2015158542A1 (fr) 2015-10-22
JP2017527745A (ja) 2017-09-21
CN106232942A (zh) 2016-12-14
CN106232942B (zh) 2018-04-10

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