EP0965729A3 - Locking element for turbine rotor blades - Google Patents

Locking element for turbine rotor blades Download PDF

Info

Publication number
EP0965729A3
EP0965729A3 EP99108999A EP99108999A EP0965729A3 EP 0965729 A3 EP0965729 A3 EP 0965729A3 EP 99108999 A EP99108999 A EP 99108999A EP 99108999 A EP99108999 A EP 99108999A EP 0965729 A3 EP0965729 A3 EP 0965729A3
Authority
EP
European Patent Office
Prior art keywords
locking element
rotor blades
turbine rotor
fitting part
lock
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
EP99108999A
Other languages
German (de)
French (fr)
Other versions
EP0965729A2 (en
EP0965729B1 (en
Inventor
Bernd Sokol
Horst Müller
Georg Dipl.-Ing. Feeder
Gerd Rupprecht
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.)
Alstom SA
Original Assignee
ABB Patent GmbH
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 ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0965729A2 publication Critical patent/EP0965729A2/en
Publication of EP0965729A3 publication Critical patent/EP0965729A3/en
Application granted granted Critical
Publication of EP0965729B1 publication Critical patent/EP0965729B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F01D5/32—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

Landscapes

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

Abstract

The lock (2) has a filler part (5) with a contour matching the blade foot (12) supported against a bearer edge (3) in the turbine blade (1) via a fitting part. A protrusion (4) in the base region of the lock provides axial support for the filler part. The fitting part has a slot into which a wedge can be pressed to spread the fitting part.
EP99108999A 1998-06-17 1999-05-06 Locking element for turbine rotor blades Expired - Lifetime EP0965729B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19826897A DE19826897A1 (en) 1998-06-17 1998-06-17 Lock for blades of a turbine runner
DE19826897 1998-06-17

Publications (3)

Publication Number Publication Date
EP0965729A2 EP0965729A2 (en) 1999-12-22
EP0965729A3 true EP0965729A3 (en) 2000-12-27
EP0965729B1 EP0965729B1 (en) 2004-01-07

Family

ID=7871109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99108999A Expired - Lifetime EP0965729B1 (en) 1998-06-17 1999-05-06 Locking element for turbine rotor blades

Country Status (6)

Country Link
US (1) US6135717A (en)
EP (1) EP0965729B1 (en)
AT (1) ATE257547T1 (en)
CZ (1) CZ294271B6 (en)
DE (2) DE19826897A1 (en)
PT (1) PT965729E (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080050238A1 (en) * 2006-08-24 2008-02-28 Pratt & Whitney Canada Corp. Disc firtree slot with truncation for blade attachment
DE102008048261B4 (en) 2008-09-22 2017-04-06 Siemens Aktiengesellschaft Axial turbomachinery rotor with a paddle lock and method of making the same
US8523529B2 (en) * 2009-11-11 2013-09-03 General Electric Company Locking spacer assembly for a circumferential entry airfoil attachment system
US8414268B2 (en) * 2009-11-19 2013-04-09 United Technologies Corporation Rotor with one-sided load and lock slots
FR2996251B1 (en) * 2012-09-28 2018-07-27 Safran Aircraft Engines SELF-TENSIONING ATTACHMENT FOR TURBINE BLADE IN CMC
US9416670B2 (en) 2013-10-16 2016-08-16 General Electric Company Locking spacer assembly
US9512732B2 (en) 2013-10-16 2016-12-06 General Electric Company Locking spacer assembly inserted between rotor blades
US9518471B2 (en) 2013-10-16 2016-12-13 General Electric Company Locking spacer assembly
US9464531B2 (en) 2013-10-16 2016-10-11 General Electric Company Locking spacer assembly
US9341071B2 (en) 2013-10-16 2016-05-17 General Electric Company Locking spacer assembly
ITMI20132124A1 (en) 2013-12-18 2015-06-19 Franco Tosi Meccanica S P A ROTORIAL STAGE OF AXIAL TURBINE WITH BLOCK LOCKING OF THE ROOTS OF THE BALLS
CN106089317B (en) * 2016-06-08 2017-06-23 哈尔滨汽轮机厂有限责任公司 Turbine rotor tooth form blade root last years locking piece assembly method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB659592A (en) * 1948-09-17 1951-10-24 Sulzer Ag Improvements relating to rotors for turbines or axial flow compressors
DE3028701A1 (en) * 1980-07-29 1982-02-25 AEG-Kanis Turbinenfabrik GmbH, 8500 Nürnberg Locking arrangement for turbine rotor blade - has profiled lock segment pressed into blade recess by wedge-expanded spacer
DE19619317A1 (en) * 1996-05-14 1997-11-20 Voith Hydro Gmbh Impeller for impulse turbine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB704882A (en) * 1951-03-08 1954-03-03 W H Allen Sons & Company Ltd Improvements in and relating to the securing of blading to turbine wheels and other high speed rotary members
US3721506A (en) * 1971-05-25 1973-03-20 Gen Electric Split-nut blade locking assembly
US3801222A (en) * 1972-02-28 1974-04-02 United Aircraft Corp Platform for compressor or fan blade

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB659592A (en) * 1948-09-17 1951-10-24 Sulzer Ag Improvements relating to rotors for turbines or axial flow compressors
DE3028701A1 (en) * 1980-07-29 1982-02-25 AEG-Kanis Turbinenfabrik GmbH, 8500 Nürnberg Locking arrangement for turbine rotor blade - has profiled lock segment pressed into blade recess by wedge-expanded spacer
DE19619317A1 (en) * 1996-05-14 1997-11-20 Voith Hydro Gmbh Impeller for impulse turbine

Also Published As

Publication number Publication date
CZ216299A3 (en) 2000-02-16
CZ294271B6 (en) 2004-11-10
ATE257547T1 (en) 2004-01-15
EP0965729A2 (en) 1999-12-22
US6135717A (en) 2000-10-24
DE59908226D1 (en) 2004-02-12
DE19826897A1 (en) 1999-12-23
EP0965729B1 (en) 2004-01-07
PT965729E (en) 2004-05-31

Similar Documents

Publication Publication Date Title
EP0965729A3 (en) Locking element for turbine rotor blades
CA2188138A1 (en) Centrifugal chopper pump
GB9607578D0 (en) Turbine rotor blades
EP1985423A3 (en) Mitre gauge
IL97087A0 (en) Key for electronic and mechanical locks
AU622972B2 (en) Device for retaining knife blades for cutting a paper web
BR0010272A (en) Blade for holding a cutting insert inside a tool holder cavity, and tool holder assembly
AU2349384A (en) Saw blade
ZA985281B (en) Blade profile for rotor craft rotors and rotor blade having this profile
ITMI970327V0 (en)
EP0895777A3 (en) Compositions based on peroxyacids
CZ45095A3 (en) Reamer
DK1163832T3 (en) Cutting machine
BR0212643A (en) Face milling cutting tool
AU582935B2 (en) Improved shroud means for turbine rotor blade tip clearance
PL346333A1 (en) Blade-type lock and method of making same
DE50005322D1 (en) Tub Grinders
ATE235317T1 (en) BLADE SEAT ARRANGEMENT ON A CUTTING SHAFT IN A SHREDDING MACHINE
DE59806770D1 (en) Electric hair clipper
TW350802B (en) Compass saw blade
SE8401383D0 (en) FIXING OF CIRCULAR ORGANIZED LOST TAG IN A CIRCULAR CUT
ES2167108T3 (en) TEETH FIXING SYSTEM FOR FRESHING OF TOOTH TOOTH TO WORK WOOD.
SG80000A1 (en) A fixture for use in disposing a region of material on the shroud of a rotor blade
JPH1067001A (en) Saw
IT244590Y1 (en) LOCKING DEVICE FOR A CUTTING INSERT ON A CUTTER BODY.

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 CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

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

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 CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

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

17P Request for examination filed

Effective date: 20010625

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

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

Owner name: ALSTOM

17Q First examination report despatched

Effective date: 20020829

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

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

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040107

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040107

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040107

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: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 59908226

Country of ref document: DE

Date of ref document: 20040212

Kind code of ref document: P

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040407

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040407

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

Effective date: 20040324

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040418

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

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

Ref country code: LU

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

Effective date: 20040506

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: MICHELI & CIE INGENIEURS-CONSEILS

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

Ref country code: MC

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

Effective date: 20040531

Ref country code: BE

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

Effective date: 20040531

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20040401

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
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

BERE Be: lapsed

Owner name: *ALSTOM

Effective date: 20040531

26N No opposition filed

Effective date: 20041008

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: SIEMENS AKTIENGESELLSCHAFT

Free format text: ALSTOM#25, AVENUE KLEBER#75116 PARIS (FR) -TRANSFER TO- SIEMENS AKTIENGESELLSCHAFT#WITTELSBACHERPLATZ 2#80333 MUENCHEN (DE)

Ref country code: CH

Ref legal event code: NV

Representative=s name: SIEMENS SCHWEIZ AG

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20110428 AND 20110504

REG Reference to a national code

Ref country code: NL

Ref legal event code: SD

Effective date: 20110606

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: PT

Ref legal event code: PC4A

Owner name: SIEMENS AKTIENGESELLSCHAFT, DE

Effective date: 20110907

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCOW

Free format text: NEW ADDRESS: WERNER-VON-SIEMENS-STRASSE 1, 80333 MUENCHEN (DE)

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

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

Ref country code: PT

Payment date: 20180411

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20180529

Year of fee payment: 20

Ref country code: AT

Payment date: 20180405

Year of fee payment: 20

Ref country code: NL

Payment date: 20180517

Year of fee payment: 20

Ref country code: FR

Payment date: 20180516

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20180514

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20180719

Year of fee payment: 20

Ref country code: GB

Payment date: 20180516

Year of fee payment: 20

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

Ref country code: CH

Payment date: 20180809

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59908226

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20190505

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20190505

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 257547

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190506

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

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

Ref country code: PT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190513

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 EXPIRATION OF PROTECTION

Effective date: 20190505