EP1130217B1 - Fixation des aubes dans une turbomachine - Google Patents

Fixation des aubes dans une turbomachine Download PDF

Info

Publication number
EP1130217B1
EP1130217B1 EP00810175A EP00810175A EP1130217B1 EP 1130217 B1 EP1130217 B1 EP 1130217B1 EP 00810175 A EP00810175 A EP 00810175A EP 00810175 A EP00810175 A EP 00810175A EP 1130217 B1 EP1130217 B1 EP 1130217B1
Authority
EP
European Patent Office
Prior art keywords
blade
rotor blades
recess
roots
blade roots
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.)
Expired - Lifetime
Application number
EP00810175A
Other languages
German (de)
English (en)
Other versions
EP1130217A1 (fr
Inventor
Michael Prof. Dr. Müller
Manfred Knorr
Jörg Dr. Pross
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology 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 Alstom Technology AG filed Critical Alstom Technology AG
Priority to DE50010348T priority Critical patent/DE50010348D1/de
Priority to EP00810175A priority patent/EP1130217B1/fr
Priority to US09/794,050 priority patent/US20010019697A1/en
Publication of EP1130217A1 publication Critical patent/EP1130217A1/fr
Application granted granted Critical
Publication of EP1130217B1 publication Critical patent/EP1130217B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
    • F01D5/3038—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot the slot having inwardly directed abutment faces on both sides

Definitions

  • the invention relates to blades with blade roots in the circumferential grooves on Rotor of a turbomachine are attached. It particularly concerns her Mounting and securing against twisting and falling out of the groove.
  • blades on a rotor of a Turbomachine to assemble is anchoring using shovel feet in T-shaped Circumferential grooves.
  • To assemble the blades in a circumferential groove, in particular to allow the last shovel is a certain assembly game in the circumferential direction required.
  • This Problem is solved by a reduction of the mounting game by between the shovel feet intermediate pieces are installed tightly so that the Monday game is completed. After installation of the spacers is remaining game between the shovel feet, however, often too small to free to allow thermal expansion. Due to the strains arise while forces that disturb the smoothness of the rotor and finally vibrations can cause.
  • the blade roots which are anchored in circumferential grooves, each have at least one depression or opening which runs in the circumferential direction and in each of which a connecting piece is arranged which connects at least two blade roots to one blade package.
  • the thus connected blade roots are thereby prevented from twisting.
  • a connector consists of a shaped piece of any cross-section, and is arranged in a recess or opening, whose cross-section is adapted to the fitting.
  • the recess or opening and the fitting is dimensioned so that the fitting is located with a small clearance in a recess or opening and a displacement of a blade root and the fitting relative to each other is still possible.
  • the inventive compound of blade roots is the Rotational freedom of the blade roots around the blade longitudinal axis insofar reduces that they are secured against twisting and falling out. Intermediate pieces are used to partially fill in the mounting gap installed the blade feet. However, they no longer have the function of Anti-rotation of the blade feet held and now do not need so tight to be installed. As a result, free thermal expansions of Shovel feet ensured.
  • the connecting piece consists of a shaped piece of rectangular cross-section, which is inserted in a likewise rectangular recess on the side of the blade root, which faces the rotor and groove bottom.
  • the connecting piece consists of a round wire which is inserted in a drilling opening in the blade root. Again, the diameter of the opening and the wire is dimensioned so that a displacement of the blade root along the wire is possible.
  • the blade feet each have a recess or opening on, which extends in the circumferential direction.
  • the blade roots each two parallel in the circumferential direction extending depressions or openings, in each of which a connector inserted or inserted.
  • a single connector is arranged in one embodiment, which extends almost over the entire circumference of a groove and almost all blade feet in this groove interconnects.
  • shorter connecting pieces are arranged in the recesses or openings, which each connect two or more adjacent blade feet together to form a blade package.
  • a further embodiment with two mutually parallel Recesses or openings are arranged short connectors, the connect two blade feet to a blade root pair.
  • Side by side and parallel connectors are one Blade foot offset from each other by a first connector in one first recess or opening is inserted and a first and adjacent, second blade foot connects.
  • a second, parallel Connector is in the second, adjacent recess or opening inserted and connects the second and adjacent, third blade root, and immediately.
  • the foot of the last shovel is placed in a mounting slit intended for it in the groove screwed in and to prevent rotation by a final connector locked with the adjacent blade feet by a connector in the recess or opening of the last blade root is pulled in.
  • Figure 1 illustrates a blade root 1, which is anchored in an inverse T-shaped circumferential groove 2 in a rotor 3 of a turbomachine.
  • the blade root 1 has on the side facing the groove bottom, a recess 4 with a rectangular cross-section.
  • a connector 5 with a similar rectangular cross-section is inserted with a small clearance in the recess.
  • the cross-section of the recess in the blade root and the associated connector is basically arbitrary. Instead of the rectangular cross section for the recess and the connector, for example, elliptical or round shapes are executable.
  • a round recess 6 is arranged, in which a pressing spring 7 is inserted, which additionally prevents the blade root from displacements.
  • Figure 2 shows a view II of a plurality of adjacent, anchored in the circumferential groove blade roots 1, which are connected by a connecting piece 5. They form a package of blade roots, which can not twist in the circumferential groove thanks to their greater length, even if a mounting gap has arisen due to displacement of the blade roots during operation.
  • the connector thus provides an anti-rotation, which makes it impossible for the blades to fall out.
  • the blade roots along the entire circumferential groove are connected together in this way to form several such blade root packets. A connection of almost all blade roots, with the exception of the last or last two blades, by a single connector, is also feasible.
  • FIG. 3 shows a plurality of blade roots anchored in a peripheral groove with a further arrangement of connecting pieces according to the invention.
  • the blade roots 1, 1a, 1b, 1c, 1d each have on their side facing the groove bottom two parallel depressions, which are arranged on both sides of the blade root center.
  • short connectors 5a, 5b, 5c are inserted.
  • Each connecting piece in each case connects a blade root pair, wherein the connecting pieces arranged parallel next to one another are each offset by one blade root.
  • a connecting piece 5a is inserted in the first recess of the two blade feet 1a and 1b, connecting them and securing them against rotation.
  • FIGS. 4a to 4e show the assembly of the last blade of the circumferential groove and the locking of its blade root with the adjacent blade roots by means of the connecting pieces according to the invention.
  • FIG. 4 a shows blade roots 11 and 12, which are spaced from the blade roots 13 and 14 by a mounting gap in the circumferential groove 2.
  • the blade roots 11 and 12 are connected to each other with connecting pieces 5d and 5e. They both extend, for example, over several blade feet.
  • FIG. 4b shows the same circumferential groove 2 with the last blade, the blade root 15 of which has been anchored in the mounting gap of the groove 2.
  • the depressions 4 of the blade root 15 are still empty here, so the blade root is not yet secured against rotation.
  • the locking of this last blade root proceeds as follows according to FIGS. 4c-e: The blade root 12 is first pushed over the remaining gap next to the blade root 15 so that the ends of the connecting pieces 5d and 5e become visible.
  • the connecting piece 5d is then pulled in the same direction until its end comes to lie in the recess 4 of the blade root 12.
  • the assembly and locking is completed by slightly increasing the gaps between all the blade roots in the circumferential groove, so that the gap left after the last blade has been assembled is distributed over the entire circumferential groove. Intermediate pieces fill these remaining columns. It results that almost all blade feet are secured by means of two parallel connecting pieces against rotation and the remaining blade feet are secured at least by means of a connecting piece. This ensures that none of the blades can twist and fall out of the groove.
  • the spacers are a known component and are not shown here. They are dimensioned so that they can reduce the assembly game and during the turbine operation no larger gap can form, which could disturb the smoothness of the rotor. Thanks to the anti-rotation device, however, they no longer need to fill up the assembly play completely so that a sufficiently large free space remains between the blade feet, in which thermal expansions are freely granted.

Claims (9)

  1. Aubes d'un rotor (3) de turbomachine, où les aubes présentent chacune une base d'aube en forme de T ou de tête de marteau (1), qui est ancrée dans une rainure périphérique (2) sur le rotor (3) de la turbomachine,
    caractérisées en ce que
    les aubes présentent dans la région de la tête de marteau (1) une fixation contre la rotation pour les empêcher de ressortir de la rainure périphérique, la base d'aube présentant dans la région de la tête de marteau (1) un renfoncement (4) s'étendant dans la direction longitudinale de la rainure périphérique ou une ouverture et une pièce de connexion (5) disposée dans le renfoncement (4) ou l'ouverture, laquelle s'étend dans la région de la tête de marteau (1) sur au moins deux bases d'aubes, entre les aubes étant prévu dans la rainure périphérique (2) un jeu de montage pour accommoder les dilatations thermiques et la pièce de connexion pouvant être déplacée par rapport aux bases d'aubes.
  2. Aubes selon la revendication 1,
    caractérisées en ce que
    les bases d'aubes (1) présentent à chaque fois deux renfoncements (4) ou ouvertures dans lesquels est disposée à chaque fois une pièce de connexion.
  3. Aubes selon la revendication 1 ou 2,
    caractérisées en ce que
    l'au moins un renfoncement (4) est prévu à chaque fois du côté de la base de l'aube (1) tourné vers le fond de rainure de la rainure périphérique (2), et présente une section transversale rectangulaire et la pièce de connexion (5), qui est placée à chaque fois dans l'au moins un renfoncement (4), est une pièce moulée de section transversale rectangulaire identique.
  4. Aubes selon la revendication 1 ou 2,
    caractérisées en ce que
    l'ouverture au niveau de la base d'aube (1) est une ouverture percée et la pièce de connexion se compose d'un fil de même diamètre qui est enfoncé dans l'ouverture percée.
  5. Aubes selon l'une quelconque des revendications 1 à 4,
    caractérisées en ce que
    les pièces de connexion (5) s'étendent presque sur toute la périphérie de la rainure et relient pratiquement toutes les bases d'aubes (1) pour former un paquet d'aubes.
  6. Aubes selon l'une quelconque des revendications 1 à 4,
    caractérisées en ce que
    les pièces de connexion (5) s'étendent sur deux bases d'aubes (1) ou plus, et les relient pour former plusieurs paquets d'aubes.
  7. Aubes selon la revendication 6,
    caractérisées en ce que
    les bases d'aubes (2) présentent à chaque fois deux renfoncements (4) ou ouvertures et les pièces de connexion (5) s'étendent à chaque fois sur deux bases d'aubes (1) et les pièces de connexion juxtaposées en parallèle sont disposées de manière décalée autour d'une base d'aube.
  8. Aubes selon l'une quelconque des revendications 1 à 7,
    caractérisées en ce que
    les bases d'aubes (1) présentent à chaque fois un renfoncement rond (6) dans lequel est disposé un ressort de pression (7).
  9. Aubes selon l'une quelconque des revendications 1 à 7,
    caractérisées en ce que
    la dernière base d'aube (1) montée dans la rainure périphérique (2) est verrouillée aux bases d'aubes adjacentes par déplacement d'une ou de deux pièces de connexion (5d, 5e).
EP00810175A 2000-03-01 2000-03-01 Fixation des aubes dans une turbomachine Expired - Lifetime EP1130217B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE50010348T DE50010348D1 (de) 2000-03-01 2000-03-01 Befestigung von Laufschaufeln in einer Turbomaschine
EP00810175A EP1130217B1 (fr) 2000-03-01 2000-03-01 Fixation des aubes dans une turbomachine
US09/794,050 US20010019697A1 (en) 2000-03-01 2001-02-28 Fastening rotor blades in a turbomachine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00810175A EP1130217B1 (fr) 2000-03-01 2000-03-01 Fixation des aubes dans une turbomachine

Publications (2)

Publication Number Publication Date
EP1130217A1 EP1130217A1 (fr) 2001-09-05
EP1130217B1 true EP1130217B1 (fr) 2005-05-18

Family

ID=8174578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00810175A Expired - Lifetime EP1130217B1 (fr) 2000-03-01 2000-03-01 Fixation des aubes dans une turbomachine

Country Status (3)

Country Link
US (1) US20010019697A1 (fr)
EP (1) EP1130217B1 (fr)
DE (1) DE50010348D1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005010323A1 (fr) * 2003-07-26 2005-02-03 Alstom Technology Ltd Systeme de fixation des emplantures d'aubes d'une turbomachine
US7474643B2 (en) * 2003-10-02 2009-01-06 Qualcomm Incorporated Systems and methods for communicating control data using multiple slot formats
EP1707746A1 (fr) * 2005-03-18 2006-10-04 Siemens Aktiengesellschaft Composant de turbomachine, turbomachine et procédé de fixation d'aubes sur un composant
EP2045444B1 (fr) * 2007-10-01 2015-11-18 Alstom Technology Ltd Aube de rotor, procédé de fabrication d'une aube de rotor, et compresseur avec une telle aube
EP2320030B1 (fr) 2009-11-10 2012-12-19 Alstom Technology Ltd Rotor et aube de rotor pour une turbomachine axiale
CH702203A1 (de) * 2009-11-10 2011-05-13 Alstom Technology Ltd Rotor für eine axial durchströmte turbomaschine sowie laufschaufel für einen solchen rotor.
DE102010053141B4 (de) * 2009-12-07 2018-10-11 General Electric Technology Gmbh Turbinenaggregat mit möglicher Überdrehung des Fußes einer Schaufel bis zum Einbau einer letzten Schaufel
EP2562356A1 (fr) * 2011-08-24 2013-02-27 Siemens Aktiengesellschaft Agencement de pales
GB201203303D0 (en) 2012-02-27 2012-04-11 Rolls Royce Plc Balancing of rotor
US11773750B2 (en) * 2022-01-05 2023-10-03 General Electric Company Turbomachine component retention

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE459203C (de) * 1928-04-27 E H Hans Holzwarth Dr Ing Einrichtung zur Schaufelbefestigung fuer Dampf- und Gasturbinen
DE333353C (de) * 1920-04-16 1921-03-18 Osthoff Fa Walter Gewebe-Gassengmaschine
GB614678A (en) * 1946-07-19 1948-12-20 Parsons C A & Co Ltd Improvements in or relating to turbine blading or the like
US2809801A (en) * 1952-04-18 1957-10-15 Ingersoll Rand Co Turbine rotor construction
CH494341A (de) * 1968-07-26 1970-07-31 Sulzer Ag Rotor für Turbomaschinen
FR2680828A1 (fr) * 1991-08-28 1993-03-05 Sev Motorola Rotor de turbomachine a positionnement angulaire ameliore des aubes.
US5509784A (en) * 1994-07-27 1996-04-23 General Electric Co. Turbine bucket and wheel assembly with integral bucket shroud

Also Published As

Publication number Publication date
US20010019697A1 (en) 2001-09-06
DE50010348D1 (de) 2005-06-23
EP1130217A1 (fr) 2001-09-05

Similar Documents

Publication Publication Date Title
EP1130217B1 (fr) Fixation des aubes dans une turbomachine
DE3419462A1 (de) Ausgleichsgetriebe
DE602005001231T2 (de) Verriegelungsmittel für Gasturbinentriebwerke
DE7438208U (de) Kupplung, insbesondere zur verwendung bei turbogeneratoren
DE2817968C2 (de) Kettentrommel
DE2937244A1 (de) Wellen-naben-verbindung
DE2922528B2 (de) Zahnkette
DE3714568C2 (fr)
DE4033536C2 (de) Zweirichtungs-Kupplung
DE2708538C3 (de) Verbindung zwischen den Kettengliedern einer Gleiskette
DE2906703C3 (de) Laschenkette mit abwechselnd Einlaschengliedern und Doppellaschengliedern
DE3642438A1 (de) Anordnung mit einem axialen haltekoerper
EP1552149B1 (fr) Stator pour pompe a vis sans fin excentrique
DE3223994C2 (de) Axialsicherungselement
DE2655728C2 (de) Lösbare Naben-Wellenverbindung
DE2930578C3 (de) Buchse aus elastischem Material für eine Verbindung
WO2009003659A2 (fr) Disque de frein à ailettes de refroidissement
DE1947065A1 (de) Sicherheitsentkupplungswelle
DE19823157A1 (de) Einrichtung zur Befestigung der Laufschaufeln axial durchströmter Turbomaschinen
DE19820638A1 (de) Zahnradanordnung
EP0959288A2 (fr) Collier de serrage
DE2830198C3 (de) Zahnwellen-Nabenverbindung
EP0940587B1 (fr) Dispositif de fixation
DE10392948B4 (de) Drehbarer Antrieb und Schaltmechanismus mit diesem drehbaren Antrieb
WO2005010323A1 (fr) Systeme de fixation des emplantures d'aubes d'une turbomachine

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: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

Kind code of ref document: A1

Designated state(s): DE GB

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALSTOM (SWITZERLAND) LTD

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALSTOM (SWITZERLAND) LTD

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

17P Request for examination filed

Effective date: 20020506

RBV Designated contracting states (corrected)

Designated state(s): DE GB

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALSTOM TECHNOLOGY LTD

17Q First examination report despatched

Effective date: 20040616

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 GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50010348

Country of ref document: DE

Date of ref document: 20050623

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050803

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: 20060221

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

Ref country code: GB

Payment date: 20130225

Year of fee payment: 14

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

Ref country code: DE

Payment date: 20130328

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50010348

Country of ref document: DE

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

Effective date: 20140301

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50010348

Country of ref document: DE

Effective date: 20141001

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: 20140301

Ref country code: DE

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

Effective date: 20141001