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EP3015655A1 - Agencement de disque de roue doté de tôles d'étanchéité - Google Patents

Agencement de disque de roue doté de tôles d'étanchéité Download PDF

Info

Publication number
EP3015655A1
EP3015655A1 EP14191066.1A EP14191066A EP3015655A1 EP 3015655 A1 EP3015655 A1 EP 3015655A1 EP 14191066 A EP14191066 A EP 14191066A EP 3015655 A1 EP3015655 A1 EP 3015655A1
Authority
EP
European Patent Office
Prior art keywords
wheel disc
sealing plates
bolts
arrangement
recesses
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Withdrawn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
EP14191066.1A
Other languages
German (de)
English (en)
Inventor
Kevin KAMPKA
Christian Kowalzik
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to EP14191066.1A priority Critical patent/EP3015655A1/fr
Priority to PCT/EP2015/073548 priority patent/WO2016066412A1/fr
Priority to CN201590000975.2U priority patent/CN208594970U/zh
Priority to US15/519,733 priority patent/US10337338B2/en
Priority to EP15778938.9A priority patent/EP3172409B1/fr
Publication of EP3015655A1 publication Critical patent/EP3015655A1/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Withdrawn legal-status Critical Current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
    • 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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/32—Locking, e.g. by final locking blades or keys
    • F01D5/323—Locking of axial insertion type blades by means of a key or the like parallel to the axis of the 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
    • F01D5/30—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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • 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
    • F05D2260/37—Retaining components in desired mutual position by a press fit connection

Definitions

  • the present invention relates to a wheel disc assembly comprising a wheel disc, a plurality of vane means secured along an outer periphery of the wheel disc, a plurality of sealing sheets slidably received circumferentially between the wheel disc and the vane means, and securing means formed to receive the sealing sheets secure against displacement in the circumferential direction.
  • Wheel disc assemblies of the type mentioned are known in the art. They form components of rotors, such as gas turbines or the like. Normally, a plurality of sealing plates are slidably received in the circumferential direction between the wheel disc and the blade means. Thus, the sealing plates can be used for example in radially spaced-apart annular grooves, which are formed on the wheel disc on the one hand and on the blade means on the other. In order to ensure proper functioning of the sealing plates, it is necessary to secure the individual sealing plates against displacement in the circumferential direction, for which corresponding securing devices are used.
  • Such a securing device can be formed, for example, by a screw extending through a through hole provided in the sealing plate and a threaded hole provided on the wheel disc, into which the screw is screwed in the intended mounted state.
  • a problem of a safety device designed in this way is that the notch effect associated with the threaded hole provided in the wheel disc has a negative effect on the strength of the wheel disc and can cause corresponding problems.
  • screws can often no longer be solved in case of doubt, what a costly boring the threaded connection pulls, causing the expensive wheel is damaged.
  • the present invention provides a Radularnan extract of the aforementioned type, which is characterized in that as securing means bolts are provided which are fixed to the wheel disc and engage in recesses formed on the wheel disc facing surfaces of the sealing plates, wherein the bolts are clamped in unthreaded holes in the wheel disc. Due to the fact that the bolts of the safety devices according to the invention, in contrast to the prior art described above not bolted to the wheel but are held clamped to the wheel discs, it is prevented that the strength of the wheel disc is reduced by the notch effect of threads.
  • the bore has a substantially hemispherical bore bottom. Accordingly, there is a transition radius between the bore and the bottom of the hole, which also prevents unnecessary weakening of the wheel disc.
  • the bolts on their end facing the wheel disc spring leg, which engage in the associated bore. Thanks to this construction, the bolts can be easily and repeatedly assembled and disassembled.
  • the spring legs are advantageously arranged opposite each other, whereby uniformly acting clamping forces are achieved.
  • the bolts have at least their end face facing the wheel disc a radially outwardly projecting projection as an attachment for an associated sealing plate. In this way, a secure and proper positioning of the sealing plates is ensured while maintaining a defined distance between the wheel disc and the sealing plates.
  • the at least one projection is advantageously formed annular, which is particularly advantageous in relation to the production of the bolt.
  • the recesses formed on the sealing plates are formed as through holes. This is on the one hand from a production point of view advantageous. On the other hand, the bolts can be more easily inserted into the associated recesses, as they are visible through the through holes from the outside.
  • the recesses formed on the sealing plates are designed as radially extending elongated holes in order to be able to compensate for thermal expansions during the intended use of the wheel disc arrangement.
  • FIGS. 1 to 5 show a wheel disc assembly 1 according to an embodiment of the present invention or components thereof.
  • the wheel disc assembly 1 comprises a wheel disc 2, a plurality of blade devices 3, which are fastened along an outer circumference of the wheel disc 2, and a plurality of sealing plates 4, which extend between the wheel disc 2 and the blade devices 3 and are accommodated in the circumferential direction U slidably. More specifically, the sealing plates 4 are inserted in annular grooves which are arranged spaced apart in the radial direction R, wherein the annular grooves are formed on the wheel disc 2 on the one hand and on the blade means 3 on the other hand.
  • the wheel disc assembly 1 comprises a plurality of safety devices 5, in the present case a safety device 5 per sealing plate 4.
  • Each safety device 5 has a bolt 6 which is fixed to the wheel disc 2 and in a recess. 7 engages, which is formed on the wheel disc 2 facing surface of each sealing plate 4.
  • the bolts 6 are held by clamping in unthreaded holes 8 of the wheel disc 2, wherein each bore 8 has a substantially hemispherical bore base formed.
  • the bolts 6 have at its end facing the wheel disc 2 two oppositely arranged spring leg 9, which rest in the intended mounted state under exercise of a clamping force on the wall of the bore 8, as in FIG. 2 is shown.
  • the bolts 8 a radially outwardly projecting projection 10, which in the present case is annular and serves as a system for an associated sealing plate 4.
  • the projection 10 acts as a spacer and defines a predetermined distance between the wheel disc 2 and the corresponding sealing plate 4.
  • the formed on the sealing plates 4 recesses 7 are provided as through holes, more specifically as a continuous and radially extending slots so that the bolt. 6 a clearance remains in the radial direction R, in particular in the radial outward direction.
  • the wheel disc assembly 1 is characterized in particular by the fact that the bolts 6 can be easily assembled and disassembled thanks to the spring legs 9. Another advantage is that the bore 8 is formed thread-free, so that the strength of the wheel disc 2 is not unnecessarily affected by notch effect. Also, the substantially hemispherical bore bottom is conducive to strength. Thanks to the projection 10 a defined position of the sealing plates 4 is ensured in the intended mounted state.
  • the design of the recesses 7 as a radially extending and continuous slots that leave the bolt 6 in the radial direction a movement clearance, allows compensation of thermal expansion of the sealing plates 4 during normal operation of the Radusionnan angel first

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP14191066.1A 2014-10-30 2014-10-30 Agencement de disque de roue doté de tôles d'étanchéité Withdrawn EP3015655A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14191066.1A EP3015655A1 (fr) 2014-10-30 2014-10-30 Agencement de disque de roue doté de tôles d'étanchéité
PCT/EP2015/073548 WO2016066412A1 (fr) 2014-10-30 2015-10-12 Agencement de disque de roue pourvu de tôles d'étanchéité
CN201590000975.2U CN208594970U (zh) 2014-10-30 2015-10-12 具有密封板的轮盘组件
US15/519,733 US10337338B2 (en) 2014-10-30 2015-10-12 Wheel disk assembly having sealing plates
EP15778938.9A EP3172409B1 (fr) 2014-10-30 2015-10-12 Agencement de disque de roue pourvu de tôles d'étanchéité

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14191066.1A EP3015655A1 (fr) 2014-10-30 2014-10-30 Agencement de disque de roue doté de tôles d'étanchéité

Publications (1)

Publication Number Publication Date
EP3015655A1 true EP3015655A1 (fr) 2016-05-04

Family

ID=51845311

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14191066.1A Withdrawn EP3015655A1 (fr) 2014-10-30 2014-10-30 Agencement de disque de roue doté de tôles d'étanchéité
EP15778938.9A Active EP3172409B1 (fr) 2014-10-30 2015-10-12 Agencement de disque de roue pourvu de tôles d'étanchéité

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15778938.9A Active EP3172409B1 (fr) 2014-10-30 2015-10-12 Agencement de disque de roue pourvu de tôles d'étanchéité

Country Status (4)

Country Link
US (1) US10337338B2 (fr)
EP (2) EP3015655A1 (fr)
CN (1) CN208594970U (fr)
WO (1) WO2016066412A1 (fr)

Families Citing this family (2)

* 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
DE102020200073A1 (de) * 2020-01-07 2021-07-08 Siemens Aktiengesellschaft Leitschaufelkranz

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070351A (en) * 1959-02-06 1962-12-25 Gen Motors Corp Blade retention

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8206119B2 (en) * 2009-02-05 2012-06-26 General Electric Company Turbine coverplate systems
EP2702279B1 (fr) * 2011-04-27 2016-04-06 Illinois Tool Works Inc. Dispositif de retenue à pression et réutilisable

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070351A (en) * 1959-02-06 1962-12-25 Gen Motors Corp Blade retention

Also Published As

Publication number Publication date
EP3172409B1 (fr) 2021-02-17
EP3172409A1 (fr) 2017-05-31
WO2016066412A1 (fr) 2016-05-06
CN208594970U (zh) 2019-03-12
US20170241276A1 (en) 2017-08-24
US10337338B2 (en) 2019-07-02

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