EP1728972A2 - Dispositif de verrouillage d'une aube de turbine - Google Patents

Dispositif de verrouillage d'une aube de turbine Download PDF

Info

Publication number
EP1728972A2
EP1728972A2 EP06009569A EP06009569A EP1728972A2 EP 1728972 A2 EP1728972 A2 EP 1728972A2 EP 06009569 A EP06009569 A EP 06009569A EP 06009569 A EP06009569 A EP 06009569A EP 1728972 A2 EP1728972 A2 EP 1728972A2
Authority
EP
European Patent Office
Prior art keywords
turbine
blade
groove
recess
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
EP06009569A
Other languages
German (de)
English (en)
Other versions
EP1728972B1 (fr
EP1728972A3 (fr
Inventor
Joana Negulescu
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.)
Rolls Royce Deutschland Ltd and Co KG
Original Assignee
Rolls Royce Deutschland Ltd and Co KG
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 Rolls Royce Deutschland Ltd and Co KG filed Critical Rolls Royce Deutschland Ltd and Co KG
Publication of EP1728972A2 publication Critical patent/EP1728972A2/fr
Publication of EP1728972A3 publication Critical patent/EP1728972A3/fr
Application granted granted Critical
Publication of EP1728972B1 publication Critical patent/EP1728972B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F01D5/32—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
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/24—Three-dimensional ellipsoidal
    • F05D2250/241—Three-dimensional ellipsoidal spherical

Definitions

  • the invention relates to a turbine blade locking device for axially securing a turbine blade on the turbine disk.
  • a fuse is required.
  • Such fuses show, for example, the EP 0 610 668 B1 , the US 5,135,354 or the US 5,518,369 ,
  • Another disadvantage is that the overall construction has a higher weight and that the production and assembly are associated with not inconsiderable costs.
  • Another disadvantage is that the functionality and reliability is not always secured or that relatively expensive control measures are required to verify the correct installation.
  • the invention has for its object to provide a turbine blade locking device of the type mentioned, which has a high level of reliability and safety with a simple structure, simple cost manufacturability and ease of installation.
  • a ball is used for locking, which forms a stop.
  • the operating principle is that one half of the ball is mounted in a hemispherical recess, while the other half of the ball is inserted into an axial groove during assembly.
  • the ball is thus each half in the blade root and arranged in the turbine disk and thus leads to an axial backup in the form of an axial stop.
  • the sealing strip of the blade platform is provided with a detent groove extending over part of its axial length, which receives one half of the ball and has a semicircular cross-section in this regard, while the other half of the ball is in a hemispherical recess of the turbine disk or the disc finger is arranged.
  • the groove is provided in the turbine disk or its Scheibenfingernut, while the hemispherical recess is formed in the blade root.
  • the locking groove is formed with a part-spherical axial end region, since the associated surface of the ball can thereby be precisely positioned and held for power transmission. It is understood that the central axis of the recess for receiving the one ball half and the radial center axis of the hemispherical end portion of the groove are preferably coincident or coincident, in order to make a tailor-made assignment of the turbine blade to the turbine disk can.
  • an additional securing element is mounted between the blade root and the turbine disk.
  • This may be formed, for example, in the form of a form-fitting ring.
  • Fig. 1 shows a schematic partial representation of a turbine disk 4, which comprises a plurality of disk fingers 7, through which axial grooves 5 are formed, in which in axial Direction blade roots 3 of turbine blades 1 are inserted.
  • the contouring of the groove 5 and the blade roots 3 is selected accordingly to ensure a snug fit.
  • FIG. 1 shows that holding plates or the like are used in the prior art for axial securing.
  • FIG. 2 shows a side view in each case of a turbine blade 1 and a partial region of the turbine disk 4.
  • FIG. 2 shows a side view in which a ball 2 is half in a hemispherical seat (recess 8) milled in the disk finger 7.
  • a locking groove 6 is milled with a hemispherical cross-section, which allows the installation of the blade 1 in the disk rim (turbine disk 4) from the front. It is thus first inserted the ball 2, whereupon then the turbine blade 1 is inserted in the direction of the arrow.
  • fuse element 9 which is insertable into a suitable fitting groove, as is known from the prior art.
  • FIG. 3 shows an alternative embodiment variant in which the ball seat (recess 8) is formed (milled) in the blade root.
  • the locking groove 6 is formed at the bottom of the Scheibenfingernut5 of the turbine disk 4.
  • the ball 2 is thereby pushed forward during assembly together with the blade 1 in the disk rim (turbine disk 4) (see arrow direction in Fig. 3).
  • the ball snaps into the groove 6, which is milled on the groove bottom of the Scheibenfingernut 5.
  • a back securing of the turbine blade 1 takes place in a simple and cost-effective manner with low weight.
  • a securing element 9 is used for the locking in front.
EP06009569A 2005-05-31 2006-05-09 Dispositif de verrouillage d'une aube de turbine Expired - Fee Related EP1728972B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005024932A DE102005024932A1 (de) 2005-05-31 2005-05-31 Turbinenschaufelaxialsperre

Publications (3)

Publication Number Publication Date
EP1728972A2 true EP1728972A2 (fr) 2006-12-06
EP1728972A3 EP1728972A3 (fr) 2011-05-04
EP1728972B1 EP1728972B1 (fr) 2012-10-17

Family

ID=36384365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06009569A Expired - Fee Related EP1728972B1 (fr) 2005-05-31 2006-05-09 Dispositif de verrouillage d'une aube de turbine

Country Status (3)

Country Link
US (1) US7309215B2 (fr)
EP (1) EP1728972B1 (fr)
DE (1) DE102005024932A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8087874B2 (en) * 2009-02-27 2012-01-03 Honeywell International Inc. Retention structures and exit guide vane assemblies
US8251668B2 (en) * 2009-06-30 2012-08-28 General Electric Company Method and apparatus for assembling rotating machines
EP2386721A1 (fr) * 2010-05-14 2011-11-16 Siemens Aktiengesellschaft Dispositif de fixation pour pales de turbomachines pouvant s'écouler axialement et son procédé de fabrication
US8753090B2 (en) 2010-11-24 2014-06-17 Rolls-Royce Corporation Bladed disk assembly
US9051845B2 (en) 2012-01-05 2015-06-09 General Electric Company System for axial retention of rotating segments of a turbine
US9623492B2 (en) 2015-03-27 2017-04-18 General Electric Company Milling tool for portion of slot in rotor
US9827628B2 (en) 2015-03-27 2017-11-28 General Electric Company Fixture for electro-chemical machining electrode
US9943920B2 (en) 2015-03-27 2018-04-17 General Electric Company Method for electro-chemical machining turbine wheel in-situ
US10005139B2 (en) 2015-12-21 2018-06-26 General Electric Company Portable milling tool with method for turbomachine milling

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5135354A (en) 1990-09-14 1992-08-04 United Technologies Corporation Gas turbine blade and disk
EP0610668B1 (fr) 1993-01-14 1996-05-01 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Dispositif pour le verrouillage d'aubes de rotor à entrée axiale et pour l'élimination du déséquilibre du rotor
US5518369A (en) 1994-12-15 1996-05-21 Pratt & Whitney Canada Inc. Gas turbine blade retention

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR976790A (fr) * 1948-10-19 1951-03-22 Pied d'aubes de compresseurs et de turbines ou analogues
US2846183A (en) * 1952-07-18 1958-08-05 William C Morgan Retaining devices for turbine blades
BE549780A (fr) * 1953-07-28
FR2120499A5 (fr) * 1971-01-06 1972-08-18 Snecma
US3853425A (en) * 1973-09-07 1974-12-10 Westinghouse Electric Corp Turbine rotor blade cooling and sealing system
JPS57143104A (en) * 1981-03-02 1982-09-04 Hitachi Ltd Moving vane loosening preventer
DE4441233A1 (de) * 1994-11-19 1996-05-23 Abb Management Ag Beschaufelter Rotor
JP2000297605A (ja) * 1999-04-12 2000-10-24 Hitachi Ltd 流体機械に於ける動翼の固定装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5135354A (en) 1990-09-14 1992-08-04 United Technologies Corporation Gas turbine blade and disk
EP0610668B1 (fr) 1993-01-14 1996-05-01 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Dispositif pour le verrouillage d'aubes de rotor à entrée axiale et pour l'élimination du déséquilibre du rotor
US5518369A (en) 1994-12-15 1996-05-21 Pratt & Whitney Canada Inc. Gas turbine blade retention

Also Published As

Publication number Publication date
US20060280611A1 (en) 2006-12-14
DE102005024932A1 (de) 2006-12-07
US7309215B2 (en) 2007-12-18
EP1728972B1 (fr) 2012-10-17
EP1728972A3 (fr) 2011-05-04

Similar Documents

Publication Publication Date Title
EP1728972B1 (fr) Dispositif de verrouillage d'une aube de turbine
EP1584793B1 (fr) Dispositif pour la fixation axiale d'aubes de turbine
EP1457640B1 (fr) Redresseur tubulaire de vortex pour turbine à gaz et sa structure de support
DE102010049493B4 (de) Kippsegmentlager
CH698337B1 (de) Anordnung mit einem Halterungssystem zur Halterung zweier Maschinenbauteile.
EP3092371B1 (fr) Rotor doté d'une bague d'appui bloquée axialement
DE102009034626A1 (de) Baugruppe bestehend aus einem Ausgleichsbehälter und einem Hauptzylinder für eine hydraulische Kraftfahrzeugbremsanlage
EP3287608B1 (fr) Bague intérieure d'une couronne d'aubes directrices d'une turbomachine
EP1524409B1 (fr) Dispositif de verrouillage d'aube
EP3167163B1 (fr) Agencement de disque de rouet
EP1552149B1 (fr) Stator pour pompe a vis sans fin excentrique
DE102008028371A1 (de) Toleranzring
EP1350924B1 (fr) Attachement des éléments de stator dans une turbine à gaz
EP3172409B1 (fr) Agencement de disque de roue pourvu de tôles d'étanchéité
EP1318276B1 (fr) Raccord à baionnette pour des sections d'un carter de compresseur à haute pression d'une turbine à gaz
EP3333438B1 (fr) Cage pour roulement à billes linéaires, boîtier et procédé
DE102014012554B3 (de) Baueinheit zum axialen Fixieren von Komponenten auf Wellen und Achsen
DE102009048905A1 (de) Verstellbare Axialkolbenmaschine mit einer Lagerschale für die Schwenkwiege
EP2787175B1 (fr) Système de sécurité et procédé de sécurité d'une zone de fixation d'au moins une aube de rotor ou d'un segment d'aube de rotor dans une zone de montage d'un palier de rotor
DE102004036389B4 (de) Turbinenschaufelfuß mit Mehrfachradiusnut für eine axiale Schaufelbefestigung
DE102019116250B4 (de) Schwenkwiegenlagerung und Verfahren zur Herstellung einer Schwenkwiegenlagerung
EP2246575A1 (fr) Agencement d'aube mobile pour un compresseur axial
EP1306522A1 (fr) Dispositif de verrouillage d'une aube pour turbomachines axiales
EP2818638B1 (fr) Assemblage aubes-disque, procédé et turbomachine
DE102019101958A1 (de) Kupplungsbetätigungseinrichtung und Kupplungseinrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

RIC1 Information provided on ipc code assigned before grant

Ipc: F01D 5/30 20060101AFI20110329BHEP

17P Request for examination filed

Effective date: 20110823

AKX Designation fees paid

Designated state(s): DE FR GB

RIC1 Information provided on ipc code assigned before grant

Ipc: F01D 5/32 20060101AFI20120606BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502006012093

Country of ref document: DE

Effective date: 20121220

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20130718

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006012093

Country of ref document: DE

Effective date: 20130718

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20170525

Year of fee payment: 12

Ref country code: DE

Payment date: 20170530

Year of fee payment: 12

Ref country code: GB

Payment date: 20170530

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006012093

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006012093

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180509

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180531

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181201