EP1995413B1 - Spaltdichtung für Schaufeln einer Turbomaschine - Google Patents

Spaltdichtung für Schaufeln einer Turbomaschine Download PDF

Info

Publication number
EP1995413B1
EP1995413B1 EP08153316A EP08153316A EP1995413B1 EP 1995413 B1 EP1995413 B1 EP 1995413B1 EP 08153316 A EP08153316 A EP 08153316A EP 08153316 A EP08153316 A EP 08153316A EP 1995413 B1 EP1995413 B1 EP 1995413B1
Authority
EP
European Patent Office
Prior art keywords
blade
gap
projection
circumferential direction
blades
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
EP08153316A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1995413A1 (de
Inventor
Thomas Heinz-Schwarzmaier
Sven Olmes
Ronald Wifling
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
Publication of EP1995413A1 publication Critical patent/EP1995413A1/de
Application granted granted Critical
Publication of EP1995413B1 publication Critical patent/EP1995413B1/de
Active 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
    • 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
    • F01D11/008—Sealing the gap between rotor blades or blades and rotor by spacer elements between the blades, e.g. independent interblade platforms

Definitions

  • the present invention relates to a gap seal for radially sealing a gap extending axially and radially between two circumferentially adjacent blades of a turbomachine.
  • Blades are circumferentially adjacent to each other.
  • rotor blades in the region of the blade roots form gaps that extend in each case axially and radially between the blade roots of adjacent blades.
  • two axially adjacent blades in the circumferential direction at their respective blade root to provide extending, open towards the gap longitudinal groove.
  • the invention deals with the problem of providing a gap seal of the type mentioned an improved embodiment, which is characterized in particular by an increased sealing effect.
  • the invention is based on the general idea to allow the sealing element to engage in its end face in a corresponding groove, so that no residual gap is left.
  • a projection which protrudes in the circumferential direction of the blade root of a blade and thereby extends at least in the region of the longitudinal groove of the blade in the circumferential direction and in the radial direction.
  • the other blade on its blade root on a matching recess into which engages the projection.
  • the projection may overlap the gap in the circumferential direction.
  • a transverse groove can be incorporated, in which the end face of the sealing element can be inserted.
  • the gap can now also be sealed in the area of the end face of the sealing element. The effectiveness of the gap seal thus formed is thus improved.
  • the projection may be dimensioned such that it overlaps on the one hand the axially open longitudinal groove of the other blade and that on the other hand it is large enough to design the transverse groove incorporated therein at its front ends closed.
  • the projection and the recess may optionally be coordinated with each other so that the projection in the recess abuts axially on the blade root of the other blade.
  • the transverse groove in the projection of one blade passes virtually seamlessly into the longitudinal groove of the other blade. As a result, the sealing effect of the gap seal can be improved.
  • Fig. 1 are two blades, namely a first blade 1 and a second blade 2 partially shown, each forming a part of a turbomachine, otherwise not shown.
  • This turbomachine is for example a turbine or a compressor.
  • the turbomachine has a stator and a rotor which is rotatably arranged in the stator about an axis of rotation.
  • the directional statements made above and below, such as axial direction, radial direction and circumferential direction, relate here each on the axis of rotation, which defines the axial direction.
  • the directions related to the axis of rotation of the rotor are indicated by double arrows. With 3, the circumferential direction is denoted by 4, the axial direction is designated and 5 denotes the radial direction.
  • the blades 1, 2 may be stator vanes. Preferably, however, the blades 1, 2 are blades of the rotor.
  • the two blades 1, 2 shown here are arranged adjacent to one another in the circumferential direction 3.
  • Each blade 1, 2 has a blade root 6 and 7, respectively.
  • the blade root 6 of the first blade 1 is referred to below as the first blade root 6.
  • the blade root 7 of the second blade 2 is referred to below as the second blade root 7.
  • a gap 8 which extends in the axial direction 4 and in the radial direction 5, is formed in the circumferential direction 3 between adjacent blades 1, 2 in the area of the blade roots 6, 7.
  • a gap seal 9 is formed in the region of the gap 8, which will be explained in more detail below.
  • a longitudinal groove 10 is incorporated in the one blade 1, that is, for example, in the first blade 1, on its blade root 6, which is also referred to below as the first longitudinal groove 10.
  • the first longitudinal groove 10 extends axially and is open to the gap 8.
  • a longitudinal groove 11 is incorporated, which is referred to below as the second longitudinal groove 11.
  • the second longitudinal groove 11 is also open to the gap 8 and extends axially.
  • the two longitudinal grooves 10, 11 are arranged on the respective blade root 6, 7 so that they face each other in the gap 8 and aligned with each other.
  • the gap seal 9 comprises a band-shaped or strip-shaped sealing element 12, which may be formed for example by a flat metal component.
  • the term "flat” here defines that the sealing element 12 has larger dimensions in its axial longitudinal direction and in its transverse direction running parallel to the circumferential direction 3 than in its radial thickness direction.
  • the sealing element 12 is dimensioned such that it engages with its longitudinal sides 13, 14 in the two longitudinal grooves 10, 11 in the circumferential direction 3. As a result, the sealing element 12 bridges the gap 8 in the region of an axial longitudinal end.
  • the one or first blade 1 has at its blade root 6 on a projection 15 which projects in the circumferential direction 3 from the first blade root 6.
  • This projection 15 extends at least in the region of the associated longitudinal groove 10 in the circumferential direction 3 and radially.
  • the projection 15 extends over the entire radial height of the first blade root 6.
  • the other or second blade 2 at its blade root 7 a stepped recess 16, in which the projection 15 engages in the shown assembled state. In this case, the projection 16 projects into the recess 16 in the circumferential direction 3.
  • the gap seal 9 now also comprises a transverse groove 17, which is incorporated in the projection 15, in such a way that it extends in the circumferential direction 3 and the gap 8 is open.
  • the transverse groove 17 is positioned at the height of the longitudinal grooves 10, 11. Accordingly, the sealing element 12 can engage axially with a projection 15 facing end face 18 in the transverse groove 17.
  • the thus formed gap seal 9 is characterized by an increased sealing effect.
  • the transverse groove 17 is expediently designed such that it merges directly into the first longitudinal groove 10.
  • the second longitudinal groove 11 is in the region of the recess 16 frontally open, so axially open.
  • the projection 15 is expediently dimensioned in the circumferential direction 3 such that it overlaps the frontally open end of the second longitudinal groove 11 in the recess 16.
  • the dimensioning of the projection 15 is matched to the second longitudinal groove 11, that the projection 15, the recess 16 overlaps so far that the transverse groove 17 may be configured to be closed at both front ends.
  • the projection 15 in one of the second blade 2 facing end-side end portion of the transverse groove 17 forms a closure of this end face of the transverse groove 17.
  • the embodiment shown here in which the recess 16 and the projection 15 are coordinated so that the projection 15 axially abuts in the mounted state shown within the recess 16 on the second blade root 7.
  • leaks can be reduced by a flow around the projection 15 within the recess 16.
  • the transverse groove 17 can thus also merge seamlessly into the second longitudinal groove 11.
  • transverse groove 17 with respect to their groove depth and the sealing element 12 are matched with respect to its axial extent to each other so that the sealing element 12 can still engage with its end face 18 sufficiently deep into the transverse groove 17 to a desired sealing effect to be able to guarantee if the usual manufacturing tolerances to be expected in the context of production as well as in the Operating the turbomachine expected usual thermal expansion processes have extreme values and add up unfavorably.
  • the proposed gap seal 9 can thus cause a sufficient sealing of the gap 9 for usual manufacturing tolerances and thermal expansion processes in the region of the end face 18.
  • the two blades 1, 2 can be basically identical, so that the second blade 2 on its side facing away from the first blade 1 side also has such a projection 15, which in turn engages in a recess 16, the in the circumferential direction 3 on the second blade 2 subsequent further blade is formed.
  • the first blade 1 has on its blade root 6 on its side remote from the second blade 2 side such a recess 6, in which a projection 15 engages, which is formed on an adjacent in this direction to the first blade 1 further blade.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
EP08153316A 2007-04-05 2008-03-26 Spaltdichtung für Schaufeln einer Turbomaschine Active EP1995413B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH5732007 2007-04-05

Publications (2)

Publication Number Publication Date
EP1995413A1 EP1995413A1 (de) 2008-11-26
EP1995413B1 true EP1995413B1 (de) 2010-04-28

Family

ID=38457915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08153316A Active EP1995413B1 (de) 2007-04-05 2008-03-26 Spaltdichtung für Schaufeln einer Turbomaschine

Country Status (6)

Country Link
US (1) US8043050B2 (ja)
EP (1) EP1995413B1 (ja)
JP (1) JP5094510B2 (ja)
AT (1) ATE466169T1 (ja)
DE (1) DE502008000588D1 (ja)
ES (1) ES2345303T3 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2213841B1 (en) * 2009-01-28 2011-12-14 Alstom Technology Ltd Strip seal and method for designing a strip seal
US20120045337A1 (en) * 2010-08-20 2012-02-23 Michael James Fedor Turbine bucket assembly and methods for assembling same
US8905716B2 (en) 2012-05-31 2014-12-09 United Technologies Corporation Ladder seal system for gas turbine engines
BE1022361B1 (fr) * 2014-11-06 2016-03-17 Techspace Aero Sa Stator mixte de compresseur de turbomachine axiale.
EP3438410B1 (en) 2017-08-01 2021-09-29 General Electric Company Sealing system for a rotary machine
EP3498980B1 (en) * 2017-12-15 2021-02-17 Ansaldo Energia Switzerland AG Shiplap seal arrangement
CN114233402A (zh) * 2020-09-09 2022-03-25 中国航发商用航空发动机有限责任公司 具有叶片缘板密封结构的静子叶片

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981609A (en) * 1975-06-02 1976-09-21 United Technologies Corporation Coolable blade tip shroud
US3995971A (en) * 1975-06-02 1976-12-07 United Technologies Corporation Rotatable vane seal
US3970318A (en) * 1975-09-26 1976-07-20 General Electric Company Sealing means for a segmented ring
EP0103260A3 (en) * 1982-09-06 1984-09-26 Hitachi, Ltd. Clearance control for turbine blade tips
FR2552159B1 (fr) * 1983-09-21 1987-07-10 Snecma Dispositif de liaison et d'etancheite de secteurs d'aubes de stator de turbine
JPS60133103U (ja) * 1984-02-17 1985-09-05 株式会社日立製作所 シ−ル構造
EP0536575B1 (de) * 1991-10-08 1995-04-05 Asea Brown Boveri Ag Deckband für axialdurchströmte Turbine
DE59710924D1 (de) * 1997-09-15 2003-12-04 Alstom Switzerland Ltd Kühlvorrichtung für Gasturbinenkomponenten
JP3999395B2 (ja) * 1999-03-03 2007-10-31 三菱重工業株式会社 ガスタービン分割環
US6561764B1 (en) * 1999-03-19 2003-05-13 Siemens Aktiengesellschaft Gas turbine rotor with an internally cooled gas turbine blade and connecting configuration including an insert strip bridging adjacent blade platforms
JP2002201913A (ja) * 2001-01-09 2002-07-19 Mitsubishi Heavy Ind Ltd ガスタービンの分割壁およびシュラウド
JP4508482B2 (ja) * 2001-07-11 2010-07-21 三菱重工業株式会社 ガスタービン静翼
US6910854B2 (en) * 2002-10-08 2005-06-28 United Technologies Corporation Leak resistant vane cluster
JP2005233141A (ja) * 2004-02-23 2005-09-02 Mitsubishi Heavy Ind Ltd 動翼およびその動翼を用いたガスタービン

Also Published As

Publication number Publication date
ES2345303T3 (es) 2010-09-20
US20080247867A1 (en) 2008-10-09
US8043050B2 (en) 2011-10-25
ATE466169T1 (de) 2010-05-15
DE502008000588D1 (de) 2010-06-10
JP5094510B2 (ja) 2012-12-12
JP2008255989A (ja) 2008-10-23
EP1995413A1 (de) 2008-11-26

Similar Documents

Publication Publication Date Title
EP1995413B1 (de) Spaltdichtung für Schaufeln einer Turbomaschine
DE10047307A1 (de) Dichtungsanordnung
EP2478186B1 (de) Rotor einer Turbomaschine
DE2241194B2 (de) Strömungsmaschinenschaufel mit inneren Kühlkanälen
DE3148985C2 (de) Rotorbaugruppe
DE102004024683A1 (de) Dichtungssystem für horizontale Verbindungsstellen von Zwischenböden von Dampfturbinen
EP3574188B1 (de) Verfahren zur abdichtung eines ringspaltes in einer turbine sowie turbine
DE102014117262A1 (de) L-Bürstendichtung für Turbomaschinenanwendungen
EP2092164B1 (de) Strömungsmaschine, insbesondere gasturbine
EP2158381A2 (de) Leitschaufel für eine gasturbine
WO2013167346A1 (de) Turbinenlaufschaufel und axialer rotorabschnitt für eine gasturbine
EP2410131B1 (de) Rotor einer Turbomaschine
DE19654471B4 (de) Rotor einer Strömungsmaschine
WO2018206306A1 (de) Verfahren zum instandhalten einer strömungsmaschine
DE102007053135A1 (de) Gasturbinenbauteil, insbesondere Flugtriebwerksbauteil bzw. Verdichterbauteil
DE102009007664A1 (de) Abdichtvorrichtung an dem Schaufelschaft einer Rotorstufe einer axialen Strömungsmaschine
EP1698759B1 (de) Rotor-Schluss
DE10305899B4 (de) Dichtungsanordnung zur Dichtspaltreduzierung bei einer Strömungsrotationsmaschine
EP2886799A1 (de) Schaufelkranz für eine Strömungsmaschine und Verfahren zum Montieren von Schaufeln eines Schaufelkranzes einer Strömungsmaschine
EP3536913A1 (de) Innenring für eine turbomaschine und entsprechendes herstellungsverfahren
EP3623576A1 (de) Gasturbinen-laufschaufel
EP2454451B1 (de) Rotor mit kopplungselementen zur mechanischen kopplung von schaufeln
EP2863019B1 (de) Dichtungsanordnung
EP3088673B1 (de) Laufschaufel für eine gasturbine, zugehöriger rotor, gasturbine und kraftwerksanlage
DE102019206432A1 (de) Turbomaschinenschaufel

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 BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20090504

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAC Information related to communication of intention to grant a patent modified

Free format text: ORIGINAL CODE: EPIDOSCIGR1

RTI1 Title (correction)

Free format text: GAP SEAL FOR AIRFOILS OF A TURBOMACHINE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HEINZ-SCHWARZMAIER, THOMAS

Inventor name: WIFLING, RONALD

Inventor name: OLMES, SVEN

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

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: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502008000588

Country of ref document: DE

Date of ref document: 20100610

Kind code of ref document: P

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20100428

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2345303

Country of ref document: ES

Kind code of ref document: T3

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20100428

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

Ref country code: LT

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: 20100428

Ref country code: SE

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: 20100428

Ref country code: NO

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: 20100728

Ref country code: NL

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: 20100428

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

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: 20100428

Ref country code: HR

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: 20100428

Ref country code: IS

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: 20100828

Ref country code: LV

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: 20100428

Ref country code: SI

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: 20100428

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

Ref country code: PL

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: 20100428

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: 20100602

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

Ref country code: EE

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: 20100428

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: 20100428

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: 20100428

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

Ref country code: SK

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: 20100428

Ref country code: CZ

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: 20100428

Ref country code: RO

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: 20100428

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: 20110131

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: 20100729

BERE Be: lapsed

Owner name: ALSTOM TECHNOLOGY LTD

Effective date: 20110331

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: 20110331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20111130

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

Ref country code: BE

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

Effective date: 20110331

Ref country code: MT

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: 20100428

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

Ref country code: FR

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

Effective date: 20110331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: LI

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

Effective date: 20120331

Ref country code: CH

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

Effective date: 20120331

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: 20110326

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 NON-PAYMENT OF DUE FEES

Effective date: 20100428

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

Ref country code: BG

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: 20100728

Ref country code: TR

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: 20100428

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

Ref country code: HU

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: 20100428

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 466169

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130326

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

Ref country code: AT

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

Effective date: 20130326

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000588

Country of ref document: DE

Representative=s name: ROESLER PATENTANWALTSKANZLEI, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000588

Country of ref document: DE

Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH, CH

Free format text: FORMER OWNER: ALSTOM TECHNOLOGY LTD., BADEN, CH

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000588

Country of ref document: DE

Owner name: ANSALDO ENERGIA IP UK LIMITED, GB

Free format text: FORMER OWNER: ALSTOM TECHNOLOGY LTD., BADEN, CH

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH

Effective date: 20161021

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

Ref country code: GB

Payment date: 20170322

Year of fee payment: 10

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

Ref country code: ES

Payment date: 20170315

Year of fee payment: 10

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000588

Country of ref document: DE

Representative=s name: ROESLER PATENTANWALTSKANZLEI, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000588

Country of ref document: DE

Owner name: ANSALDO ENERGIA IP UK LIMITED, GB

Free format text: FORMER OWNER: GENERAL ELECTRIC TECHNOLOGY GMBH, BADEN, CH

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20170824 AND 20170830

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: ANSALDO ENERGIA IP UK LIMITED

Effective date: 20170927

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

Effective date: 20180326

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: 20180326

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20190911

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 NON-PAYMENT OF DUE FEES

Effective date: 20180327

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

Ref country code: IT

Payment date: 20230825

Year of fee payment: 16

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

Ref country code: DE

Payment date: 20240321

Year of fee payment: 17