EP3172409A1 - Agencement de disque de roue pourvu de tôles d'étanchéité - Google Patents

Agencement de disque de roue pourvu de tôles d'étanchéité

Info

Publication number
EP3172409A1
EP3172409A1 EP15778938.9A EP15778938A EP3172409A1 EP 3172409 A1 EP3172409 A1 EP 3172409A1 EP 15778938 A EP15778938 A EP 15778938A EP 3172409 A1 EP3172409 A1 EP 3172409A1
Authority
EP
European Patent Office
Prior art keywords
wheel disc
sealing plates
bolts
bore
wheel disk
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.)
Granted
Application number
EP15778938.9A
Other languages
German (de)
English (en)
Other versions
EP3172409B1 (fr
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 Energy Global GmbH and Co KG
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
Publication of EP3172409A1 publication Critical patent/EP3172409A1/fr
Application granted granted Critical
Publication of EP3172409B1 publication Critical patent/EP3172409B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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, being provided as securing means bolts, which are releasably held in arranged in the wheel disc holes and engage in recesses which are formed on the wheel disc facing surfaces of the sealing plates.
  • Wheel disc assemblies of the type mentioned are known in the art. They form components of rotors, such as gas turbines or the like. Usually a plurality of sealing plates are received displaceably in the circumferential direction ⁇ bar between the wheel disc and the blade means. Thus, the sealing plates, for example, in radially spaced from each other arranged annular grooves are ⁇ sets to be on the one hand and on the wheel
  • Bucket devices on the other hand are formed.
  • Such securing means may be formed for example by a through a sealing plate provided in the through hole extending screw and provided on the wheel disc threaded bore into which the screw is screwed in the destination ⁇ according to the mounted state.
  • a problem of such a trained safety device is that with the provided in the wheel disc Tapping effect associated with negatively impact on the strength of the wheel disc and can cause corresponding problems.
  • screws can often no longer be loosened in case of doubt, which entails time-consuming boring of the screw connection, as a result of which the expensive wheel disc is damaged.
  • the US 3,070,351 a Siche ⁇ approximately ring for fitting in axial grooves blades of a compressor.
  • the clamping sleeves are located in aligned bores, which are provided on the one hand in the paddle wheel and on the other hand ⁇ in the locking ring.
  • the seat of the clamping sleeves is not further secured, so that a loss of the clamping sleeves is possible.
  • the present invention provides a wheel disc assembly of the type mentioned above, which is characterized in that for manually releasing the engagement of the respective bolt from the associated recess, the relevant bolt resiliently in the bore further
  • the pins are configured such that they supportingly resiliently to press it in its final assembly position at the hole bottom of the Radschei ⁇ be facing surfaces of the sealing plates. This ensures a play-free and thus low-wear seat of the bolt in the recess of the sealing plate.
  • the hole can be designed thread-free, so that the strength of the wheel disc is not 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 ⁇ th at least one, preferably two spring legs, which engage in the associated bore. Thanks to this one-piece construction, the bolts can be easily and repeatedly assembled and disassembled. A separate spring is not required according to this preferred embodiment, which simplifies the assembly.
  • the spring legs are advantageously oppositely arranged ⁇ , advertising achieved thereby clamping forces acting evenly to.
  • the bolts on their end face facing the wheel disc at least one radially outwardly projecting projection as an investment for an associated sealing plate.
  • the at least one projection is advantageously formed from 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 ⁇ technical point of view of advantage. 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 formed on the sealing sheets recesses as radially extending elongated holes are trained det, advantageous to be able to compensate for thermal expansion during the intended use of the wheel ⁇ disc assembly.
  • Figure 1 is a schematic perspective view of a
  • Figure 2 is a schematic sectional view showing a Siche ⁇ tion device of the wheel disc shown in Figure 1;
  • Figure 3 is a schematic perspective view of a
  • FIG. 4 shows an enlarged view of a recess formed in the sealing sheet shown in FIG. 3; and Figure 5 is a schematic perspective view of a
  • 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 received displaceably in the circumferential direction U. More precisely, the sealing plates 4 are inserted in annular grooves which are arranged spaced from each other in the radial direction R, wherein the annular grooves on the wheel disc 2 on the one hand and on the blade ⁇ devices 3 on the other hand are formed.
  • the wheel disc assembly 1 comprises a plurality of securing devices 5, in the present case a safety device 5 per sealing plate 4.
  • Each safety device 5 has a bolt 6, which is fastened to the wheel disc 2 and into one Recess 7 engages, which is formed on the wheel disc 2 to ⁇ facing surface of each sealing plate 4.
  • the bolts 6 are releasably clamped in unthreaded bores 8 of the wheel disc 2, wherein each bore 8 has a substantially hemispherical bore bottom formed.
  • the bolts 6 have, at their the wheel disc 2 supplied ⁇ end region toward two mutually oppositely disposed spring legs 9, which mounted in intended to ⁇ was under exercise rest, as shown in Figure 2 a clamping force on the wall of the bore. 8 End region facing away from the wheel disc 2, the pin 8 has a radially outwardly projecting protrusion 10, which is pre-formed overlying annular and serves as a support for a child to ⁇ sealing plate. 4 At the same time acts the pre ⁇ crack 10 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 in the radial direction R remains a play, especially 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. While in the assembly of the first bolt 6 is so deeply immersed in the bore, that then a sealing plate can be moved past its end, it is for disassembly of the bolt 6 also dive into the bore 8 to the engagement of the bolt 6 with the recess 7 to solve and thus to allow a displacement of the sealing plate in the circumferential direction.
  • the spring action of the bolt 6 is directed so that the bolt moves out of its bore at least partially, as soon as the ⁇ ser is released.
  • 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 reason is conducive to strength. Thanks to the projection 10 a defined position of the sealing plates 4 is ensured in beticiansge ⁇ according mounted state. The formation of the off ⁇ recesses 7 as a radially extending and continuous slots, which leave the bolt 6 in the radial direction of a motion play, enables compensation of heat ⁇ expansions of the sealing plates 4 during the normal operation of the Radusionnan angel. 1

Landscapes

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

Abstract

L'invention concerne un agencement de disque de roue (1) qui comprend un disque de roue (2), une pluralité de moyens formant aubes (3) qui sont fixés le long la périphérie extérieure du disque de roue (2), une pluralité de tôles d'étanchéité (4) disposées entre le disque de roue (2) et les moyens formant aubes (3) de façon coulissante dans la direction périphérique et des moyens de sécurité (5) configurés de façon à empêcher les tôles d'étanchéité (4) de coulisser dans la direction périphérique (U), les moyens de sécurité prévus étant des boulons (6) qui sont maintenus de façon amovible dans des perçages (8) ménagés au niveau du disque de roue (2) et qui s'engagent dans des évidements (7) qui sont ménagés au niveau de surfaces des tôles d'étanchéité (4) qui sont opposées au disque de roue (2), au moins un des boulons (6), de préférence toutes les boulons (6), étant conçus de telle sorte que, pour libérer l'engagement du boulon (6) respectif de l'évidement (7) associé, le boulon (6) en question est introduit davantage de manière élastique dans le perçage (8).
EP15778938.9A 2014-10-30 2015-10-12 Agencement de disque de roue pourvu de tôles d'étanchéité Active EP3172409B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
EP3172409A1 true EP3172409A1 (fr) 2017-05-31
EP3172409B1 EP3172409B1 (fr) 2021-02-17

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 Before (1)

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

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

Family Cites Families (3)

* 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
US8206119B2 (en) * 2009-02-05 2012-06-26 General Electric Company Turbine coverplate systems
CN103748369B (zh) * 2011-04-27 2016-01-27 伊利诺斯工具制品有限公司 可重复使用的压入保持器

Also Published As

Publication number Publication date
CN208594970U (zh) 2019-03-12
EP3015655A1 (fr) 2016-05-04
US10337338B2 (en) 2019-07-02
WO2016066412A1 (fr) 2016-05-06
EP3172409B1 (fr) 2021-02-17
US20170241276A1 (en) 2017-08-24

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