EP3129599B1 - Assemblage de disque de roue - Google Patents

Assemblage de disque de roue Download PDF

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Publication number
EP3129599B1
EP3129599B1 EP15738025.4A EP15738025A EP3129599B1 EP 3129599 B1 EP3129599 B1 EP 3129599B1 EP 15738025 A EP15738025 A EP 15738025A EP 3129599 B1 EP3129599 B1 EP 3129599B1
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EP
European Patent Office
Prior art keywords
sealing plates
projection
wheel disk
disk assembly
designed
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.)
Active
Application number
EP15738025.4A
Other languages
German (de)
English (en)
Other versions
EP3129599A1 (fr
Inventor
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
Publication of EP3129599A1 publication Critical patent/EP3129599A1/fr
Application granted granted Critical
Publication of EP3129599B1 publication Critical patent/EP3129599B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F05D2240/55—Seals

Definitions

  • the present invention relates to a wheel disc assembly having a wheel disc, a plurality of vane means secured along the outer periphery of the wheel disc, and a plurality of sealing plates held in two radially spaced apart annular grooves, the first annular groove provided in the wheel disc and axially outwardly through an annular projection is limited, and wherein the second annular groove is defined by a plurality of adjacently arranged annular groove segments, which are respectively provided in the individual blade means.
  • Wheel disc assemblies of the type mentioned are known in the prior art in a variety of configurations.
  • the blade devices are inserted into grooves of the wheel disc, wherein successively, the sealing plates are inserted into the two annular grooves.
  • all the sealing plates In order to install the last two vane devices, all the sealing plates must already be mounted and moved so far over their overlap areas in the annular grooves that the vane devices can be installed in the associated grooves of the wheel disc. Subsequently, the sealing plates are pushed in the circumferential direction back to its intended position and secured there against displacement suitable.
  • the recess in the rotor disk is closed by a closing part, which in turn is axially secured by the sealing plates.
  • the present invention provides a Radularnan extract of the aforementioned type, which is characterized in that at least one axially extending through the annular projection extending recess is provided whose minimum width in the circumferential direction is greater than the width of the sealing plates on the inner diameter, so in that a sealing plate can be inserted axially through the recess between the annular grooves and moved in the circumferential direction, and that at least one closure piece is provided, which is prepared for closing the recess and releasably attachable to the wheel disc, wherein the closure piece is held captive in the intended mounted state by a provided between the closure piece and at least one sealing plate positive locking in the axial direction captive.
  • the sealing plates can be threaded in a simple manner in the associated annular grooves, even if all blade devices are already mounted on the wheel disc, whereby the assembly is made very flexible. Also, the individual sealing plates can be removed easily in the service case through the recess without much effort. Thanks to the provided between the closure piece and at least one sealing plate positive locking additional securing elements for securing the closure piece in the assembled state are superfluous, whereby a very simple structure with few components is achieved.
  • the first annular groove is formed undercut and, viewed in cross-section, has at least one axially projecting retaining projection which is provided with a contact surface
  • the sealing plates each have at least one axially projecting protrusion in the region of the inner diameter viewed in cross-section
  • Supporting projection which is provided with a bearing surface, wherein the contact surface of the at least one retaining projection, the support surface of the at least one support projection and the height of the sealing plates are formed such that the wings of the sealing plates during normal operation of the Radusionnan extract under the action of centrifugal against support the contact surface of the at least one retaining projection.
  • the positive connection is realized by at least one radially projecting projection of the closure piece and at least one recess formed on the sealing plate, in which the projection engages in the intended mounted state.
  • the positive connection is realized by at least one radially projecting projection from the sealing plate and at least one recess formed on the closure piece, in which the projection engages in the intended mounted state.
  • the at least one recess is designed as a ring-segment-shaped groove extending in the circumferential direction and the at least one projection is designed as a ring-segment-shaped web extending in the circumferential direction, whereby a simple structure is achieved.
  • the first annular groove seen in cross-section two axially opposite and mutually facing retaining projections, which are each provided with a contact surface, and the sealing plates include in the region of the inner diameter in cross section considered two corresponding to the retaining projections formed axially opposing and facing away from each other support projections, each provided with a support surface, wherein the contact surfaces and the support surfaces are formed such that support the supporting surfaces of the sealing plates during normal operation of the Radusionnanowski extract under the action of a centrifugal force against the contact surfaces of the retaining projections.
  • the weight of the sealing plates is distributed more uniformly during normal operation, whereby a better stability and force introduction into the wheel disc is achieved.
  • the contact surface of the at least one holding projection and the support surfaces of the sealing plates each extend both transversely to the radial direction and transversely to the axial direction.
  • the contact surfaces and the wings are each inclined.
  • the side surfaces of the sealing plates extend at least partially transversely to the axial direction and are formed such that the sealing plates overlap in the intended state with respect to the axial direction in the region of their side surfaces. In this way, a sealing effect is achieved between the side surfaces adjacent arranged sealing plates in the axial direction.
  • the side surfaces of the sealing plates are stepped, so that the sealing plates can be displaced relative to each other by a predetermined amount while maintaining an overlap in the circumferential direction.
  • the grading should be chosen such that the sealing plates in a state in which all the sealing plates of a Radularnanowski are mounted, can be pushed together so that between two adjacent sealing plates arranged a distance can be set, which is greater than the width of a single sealing plate.
  • Such a configuration may be advantageous depending on the type of mounting of the sealing sheets, as will become apparent from the embodiment described below with reference to the figures.
  • the at least one closure piece on opposite sides radially outwardly projecting Ver gleich Swissvorsprünge, which engage in the intended state in correspondingly formed pockets of the recess.
  • the closure piece can be secured in the circumferential direction of the wheel disc.
  • FIGS. 1 to 4 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 means 3, which are fixed along the outer periphery of the wheel disc 2, and a plurality of sealing plates 4, which are held between the wheel disc 2 and the blade means 3 in two radially spaced annular grooves 5 and 6.
  • the first annular groove 5 is provided in the wheel disc 2 and is limited axially outwardly by an annular projection 7.
  • the second annular groove 6 is defined by a plurality of adjacently arranged annular groove segments which are respectively formed in the blade devices 3.
  • the wheel disc 2 comprises at least one axially extending through the annular projection 7 through recess 8, the minimum width in the circumferential direction is greater than the width of the sealing plates 4 at the inner diameter. Accordingly, the sealing plates 4 can be axially inserted through the recess 8 between the annular grooves 5 and 6 and moved in the circumferential direction of these.
  • the wheel disc assembly 1 also comprises a closure piece 9, which can be releasably secured to the wheel disc 2.
  • the provided on the wheel disc 2 first annular groove 5 is formed undercut and, viewed in cross section has two axially opposite and mutually facing retaining projections 10, which are each provided with a contact surface 11.
  • the sealing plates 4 comprise in the region of their inner diameter in cross-section two corresponding to the holding projections 10 formed axially opposite each other and facing away from each other supporting projections 12, which are each provided with a support surface 13.
  • the holding projections 10 and the supporting projections 12 each extend transversely to the radial direction R as well as transversely to the axial direction A and are presently arranged on the bisecting line, although other inclinations are possible.
  • the contact surfaces 11 of the retaining projections 10, the support surfaces 13 of the support projections 12 and the height of the sealing plates 4 are formed or selected such that the support surfaces 13 of the sealing plates 4 during normal operation of the Support wheel disc assembly 1 under the action of centrifugal force against the contact surfaces 11 of the holding projections 10.
  • the side surfaces 14 of the sealing plates 4 extend at least partially transversely to the axial device A and are formed such that the sealing plates 4 overlap in their intended condition with respect to the axial direction A in the region of their side surfaces 14.
  • the side surfaces 14 of the sealing plates 4 are stepped, so that adjacent arranged and overlapping sealing plates 4 can be displaced in the radial direction while maintaining the overlap.
  • the degree of overlap is selected such that the sealing sheets 4 are mounted in a state in which all the sealing sheets 4 are mounted on the wheel disc assembly 1, as shown in FIG FIG. 1 is shown, can slide into one another such that between two adjacently arranged sealing plates 4, a distance can be set, which is greater than the maximum width of the sealing plates 4.
  • the recess 8 comprises pockets 15 arranged on both sides, which extend axially through the entire annular projection 7 and form undercuts in the radial direction.
  • the closure piece 9 comprises correspondingly formed to the pockets 15, radially outwardly projecting VerMAN Swissvorsprünge 16 which engage in the intended condition of the closure piece 9 in the pockets 15, whereby a securing of the closure piece 9 is achieved in the radial direction.
  • the closure piece 9 further comprises a receiving surface 17 which serves to receive at least one sealing plate 4. In the area of the receiving surface 17, the closure piece 9 has a web 18 extending in the radial direction, which engages in the intended state in correspondingly formed, provided on the inner diameter of the sealing plates 4 grooves 19 of the sealing plates 4.
  • the sealing plates 4 are moved in the circumferential direction in its intended position.
  • the grooves 19 of the sealing plates of two adjacent sealing plates 4 are each partially brought into positive engagement with the protruding from the receiving surface 17 of the closure piece 9 web 18.
  • the sealing plates 4 are fixed by suitable means in their intended circumferential position.
  • a fixation for example, using bolts not shown in detail, which extend through provided in the sealing plates 4, extending in the radial direction elongated holes and fixed to the wheel disc 2.
  • the slots are used to allow movement of the sealing plates 4 during normal operation of the wheel disc assembly 1 in the radial direction.
  • a significant advantage of the wheel disc assembly 1 is that the sealing plates 4 can be easily and easily assembled and disassembled, even if the blade devices 3 already or still on the wheel disc 2 are fixed. Further, the contact surfaces 11 of the retaining projections 10, the support surfaces 13 of the support projections 12 and the height of the sealing plates 4 are formed such that the support surfaces 13 of the sealing plates 4 during normal operation of the Radusionnan Aunt 1 under the action of centrifugal force against the contact surface 11 of the retaining projections 10 support. Thus, the weight of the sealing plates 4 is taken up by the wheel disc 2, resulting in that the connection areas between the wheel disc 2 and the blade means 3 must be less stable and thus can be produced more cheaply.
  • the closure piece 9 is due to the positive connection between the web 18 of the closure piece 9 and the grooves 19 of the sealing plates 4 secured in a simple manner without additional securing elements in its intended position, whereby a total of a simple structure is achieved.
  • said positive connection can also be achieved by means of a depression provided on the closure piece 9 and projections or webs projecting radially from the sealing plates 4.
  • FIG. 5 it is basically sufficient to provide a single retaining projection 10 and a single support projection 12, as in FIG. 5 is shown in the same or similar components with the same reference numerals as in the FIGS. 1 to 4 are provided. Otherwise, the in FIG. 5 shown arrangement of that arrangement, previously with reference to the FIGS. 2 to 4 has been described.
  • FIG. 6 shows a further alternative embodiment of the in the FIGS. 2 to 4 arrangement shown, which differs only to the effect that for axial securing of the closure piece 9 on sealing plates 4 radially inwardly projecting webs 20 are formed and on the closure piece. 9 a correspondingly formed groove 21 is provided, whereby a positive connection between the closure piece 9 and the sealing plates is achieved in the intended mounted state.
  • the arrangements correspond to each other, which is why identical or similar components are provided with the same reference numerals.

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

Claims (9)

  1. Agencement (1) de disque de roue, comprenant un disque (2) de roue, plusieurs dispositifs (3) d'aube, qui sont fixés sur le pourtour extérieur du disque (2) de roue, et plusieurs tôles (4) d'étanchéité, qui sont retenues dans deux rainures (5, 6) annulaires à distance l'une de l'autre radialement, la première rainure (5) annulaire étant prévue dans le disque (2) de roue et étant délimitée vers l'extérieur axialement par une saillie (7) annulaire, et dans lequel la deuxième rainure (6) annulaire est définie par une pluralité de segments de rainure annulaire voisins, prévus chacun dans les divers dispositifs (3) d'aube, dans lequel il est prévu au moins un évidement (8), qui s'étend axialement à travers la saillie (7) annulaire et dont la largeur minimum, dans la direction du pourtour, est plus grande que la largeur de la tôle (4) d'étanchéité au diamètre intérieur, de manière à pouvoir déplacer une tôle (4) d'étanchéité axialement dans l'évidement (8) insérée entre les rainures (5, 6) annulaires et guidée par celles-ci dans la direction du pourtour, et en ce qu'il est prévu au moins une pièce (9) de fermeture, qui est conçue pour fermer l'évidement (8) et qui peut être fixée de manière amovible au disque (2) de roue, la pièce (9) de fermeture étant, à l'état monté conforme aux prescriptions, retenue, sans pouvoir se perdre, dans la direction axiale, par une complémentarité de forme prévue entre la pièce (9) de fermeture et au moins une tôle (4) d'étanchéité, caractérisé en ce que
    la première rainure (5) annulaire est à contre-dépouille et, considéré dans la section transversale, a au moins une saillie (10) de retenue en saillie axialement, qui est pourvue d'une surface (11) de contact, et en ce que les tôles (4) d'étanchéité ont, dans la région du diamètre intérieur, considéré en section transversale, chacune au moins une saillie (12) de portée en saillie axialement, constituée en correspondance avec la au moins une saillie (10) de retenue et pourvue d'une surface (13) de portée, dans lequel la surface (11) de contact de la au moins une saillie (10) de retenue, la surface (13) de portée de la au moins une saillie (12) de portée et la hauteur des tôles (4) d'étanchéité sont telles que les surfaces (13) de portée des tôles (4) d'étanchéité s'appuient, pendant le fonctionnement conforme aux prescriptions de l'agencement (1) de disque de roue, sous l'effet d'une force centrifuge, sur la surface (11) de contact de la au moins une saillie (10) de retenue.
  2. Agencement (1) de disque de roue suivant la revendication 1,
    caractérisé en ce que
    la complémentarité de forme est réalisée par au moins une saillie en saillie radialement de la pièce (9) de fermeture et par au moins un creux, qui est constitué sur la tôle (4) d'étanchéité et dans lequel la saillie pénètre à l'état monté conformément aux prescriptions.
  3. Agencement (1) de disque de roue suivant la revendication 1,
    caractérisé en ce que
    la complémentarité de forme est réalisée par au moins une saillie en saillie radialement de la tôle (4) d'étanchéité et par au moins un creux, qui est constitué sur la pièce (9) de fermeture et dans lequel la saillie pénètre à l'état monté conforme aux prescriptions.
  4. Agencement (1) de disque de roue suivant la revendication 2 ou 3,
    caractérisé en ce que
    le au moins un creux est constitué sous la forme d'une rainure (19 ; 21) en forme de segment d'anneau s'étendant dans la direction du pourtour et la au moins une saillie est constituée sous la forme d'une nervure (18 ; 20) sous forme de segment d'anneau s'étendant dans la direction du pourtour.
  5. Agencement (1) de disque de roue suivant l'une des revendications 1 à 4,
    caractérisé en ce que
    la première rainure (5) annulaire a, considéré en section transversale, deux saillies (10) de retenue opposées axialement l'une à l'autre et tournées l'une vers l'autre, qui sont pourvues chacune d'une surface (11) de contact, et en ce que les tôles (4) d'étanchéité comprennent, dans la région du diamètre intérieur, considéré en section transversale, deux saillies (12) de portée, constituées de manière correspondante aux saillies (10) de retenue, opposées axialement l'une à l'autre et tournées loin l'une de l'autre, qui sont pourvues chacune d'une surface (13) de portée, les surfaces (11) de contact et les surfaces (13) de portée étant constituées de manière à ce que les surfaces (13) de portée des tôles (4) d'étanchéité s'appuient, pendant le fonctionnement conformément aux prescriptions de l'agencement (1) de disque de roue, sous l'effet d'une force centrifuge, sur les surfaces (11) de contact des saillies (10) de retenue.
  6. Agencement (1) de disque de roue suivant l'une des revendications 1 à 5,
    caractérisé en ce que
    les surfaces (11) de contact de la au moins une saillie (10) de retenue et les surfaces (13) de portée des tôles (4) d'étanchéité s'étendent chacune à la fois transversalement à la direction radiale et transversalement à la direction axiale.
  7. Agencement (1) de disque de roue suivant l'une des revendications précédentes,
    caractérisé en ce que
    les surfaces (14) latérales des tôles (4) d'étanchéité s'étendent, au moins en partie, transversalement à la direction axiale et sont constituées de manière à ce que les tôles (4) d'étanchéité, à l'état conforme aux prescriptions, se chevauchent, par rapport à la direction axiale, dans la région de leurs surfaces (14) latérales.
  8. Agencement (1) de disque de roue suivant l'une des revendications précédentes,
    caractérisé en ce que
    les surfaces (14) latérales des tôles (4) d'étanchéité sont constituées de manière échelonnée.
  9. Agencement (1) de disque de roue suivant la revendication 8,
    caractérisé en ce que
    la au moins une pièce (9) de fermeture a, sur des côtés opposés, des saillies (16) de fermeture en saillie dans la direction du pourtour, qui, à l'état conforme aux prescriptions, pénètrent dans des poches (15) constituées de manière correspondante de l'évidement (8).
EP15738025.4A 2014-07-17 2015-07-09 Assemblage de disque de roue Active EP3129599B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14177461.2A EP2975218A1 (fr) 2014-07-17 2014-07-17 Assemblage de disque de roue
PCT/EP2015/065656 WO2016008789A1 (fr) 2014-07-17 2015-07-09 Agencement de disque de roue

Publications (2)

Publication Number Publication Date
EP3129599A1 EP3129599A1 (fr) 2017-02-15
EP3129599B1 true EP3129599B1 (fr) 2019-06-19

Family

ID=51205299

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14177461.2A Withdrawn EP2975218A1 (fr) 2014-07-17 2014-07-17 Assemblage de disque de roue
EP15738025.4A Active EP3129599B1 (fr) 2014-07-17 2015-07-09 Assemblage de disque de roue

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14177461.2A Withdrawn EP2975218A1 (fr) 2014-07-17 2014-07-17 Assemblage de disque de roue

Country Status (5)

Country Link
US (1) US10378367B2 (fr)
EP (2) EP2975218A1 (fr)
JP (1) JP6367463B2 (fr)
CN (1) CN106536864B (fr)
WO (1) WO2016008789A1 (fr)

Families Citing this family (3)

* 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
EP3561234B1 (fr) * 2018-04-25 2020-10-07 Siemens Aktiengesellschaft Rotor pourvu de dispositif d'étanchéité
EP3564489A1 (fr) * 2018-05-03 2019-11-06 Siemens Aktiengesellschaft Rotor à surfaces de contact optimisées au niveau de forces centrifuges

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5662458A (en) * 1995-08-24 1997-09-02 Rolls-Royce Plc Bladed rotor with retention plates and locking member

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832905A (ja) * 1981-08-21 1983-02-26 Agency Of Ind Science & Technol 翼冷却装置
JPS5910704A (ja) * 1982-07-08 1984-01-20 Toshiba Corp タ−ビン羽根植込部の構造
US6190131B1 (en) * 1999-08-31 2001-02-20 General Electric Co. Non-integral balanced coverplate and coverplate centering slot for a turbine
GB0423363D0 (en) * 2004-10-21 2004-11-24 Rolls Royce Plc Rotor assembly retaining apparatus
US7500832B2 (en) 2006-07-06 2009-03-10 Siemens Energy, Inc. Turbine blade self locking seal plate system
EP1916389A1 (fr) * 2006-10-26 2008-04-30 Siemens Aktiengesellschaft Assemblage d'aubes de turbine
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
US9366151B2 (en) * 2012-05-07 2016-06-14 General Electric Company System and method for covering a blade mounting region of turbine blades
WO2014137435A2 (fr) * 2013-03-05 2014-09-12 Rolls-Royce North American Technologies, Inc. Procédé de rétention de plaques de capot segmentées de turbine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5662458A (en) * 1995-08-24 1997-09-02 Rolls-Royce Plc Bladed rotor with retention plates and locking member

Also Published As

Publication number Publication date
WO2016008789A1 (fr) 2016-01-21
US20170211397A1 (en) 2017-07-27
CN106536864A (zh) 2017-03-22
US10378367B2 (en) 2019-08-13
EP3129599A1 (fr) 2017-02-15
JP6367463B2 (ja) 2018-08-01
CN106536864B (zh) 2018-10-09
JP2017522492A (ja) 2017-08-10
EP2975218A1 (fr) 2016-01-20

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