EP3511524A1 - Rotor doté des éléments d'étanchéité montés au niveau des rainures de maintien de l'aube de rotor - Google Patents

Rotor doté des éléments d'étanchéité montés au niveau des rainures de maintien de l'aube de rotor Download PDF

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Publication number
EP3511524A1
EP3511524A1 EP18150975.3A EP18150975A EP3511524A1 EP 3511524 A1 EP3511524 A1 EP 3511524A1 EP 18150975 A EP18150975 A EP 18150975A EP 3511524 A1 EP3511524 A1 EP 3511524A1
Authority
EP
European Patent Office
Prior art keywords
rotor
blade
sealing
rotor disk
axially
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.)
Withdrawn
Application number
EP18150975.3A
Other languages
German (de)
English (en)
Inventor
Kevin KAMPKA
Peter Schröder
Joana VERHEYEN
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
Priority to EP18150975.3A priority Critical patent/EP3511524A1/fr
Publication of EP3511524A1 publication Critical patent/EP3511524A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/31—Retaining bolts or nuts

Definitions

  • the invention relates to a rotor for use in a gas turbine with a particularly advantageous attachment of a sealing element for covering Schaufelhaltenuten in a rotor disk.
  • the rotor blades each have a blade platform projecting beyond the end face of the rotor disk.
  • In each of these ring segment grooves are present on the side facing the rotor axis, in which the sealing plates are fixed with an outer edge portion both axially and radially.
  • the blade platform of the rotor blades in the overhang extending beyond the end face of the rotor disk has a ring segment groove extending in the circumferential direction and opening toward the rotor axis.
  • the sealing elements are mounted with the respective radially outwardly facing outer edge portion in at least one Ringsegmentnut, so that the sealing elements are fixed in the axial direction of the blade.
  • the blade root has an attachment means which is undercut in the axial direction.
  • a complementary axially undercut retaining means is arranged on the holding element.
  • the system of sealing elements on the rotor disk can be done directly by their own flat contact on the front side of the rotor disk.
  • the rotor disk has an abutment shoulder extending axially between in each case two blade retaining grooves and / or the sealing element has an abutment shoulder extending to the rotor disk.
  • an advantageous direct axial support of the blade can be ensured via the sealing element on the rotor disk.
  • a backup of the fuse elements can be done by a locking pin is used, which is fixed in the axial and / or radial direction of the rotor disk and adjacent to the securing element secures this against displacement in the circumferential direction.
  • a separate locking tab is used, which is attached adjacent to the securing element, or between two securing elements on the rotor disk.
  • the securing element can be axially fixed at one end to the rotor disk and cause axial insertion after insertion of blades and sealing element into the blade retaining groove by bending the axially opposite end of the securing element.
  • the radially outer region of the blade retaining grooves or the end face of the rotor disk is covered by the sealing element.
  • the sealing element due to the attachment of the retaining foot of the sealing element in the blade retaining groove there is no cover of the rotor disk or the blade retaining groove (although this would be possible by a cover plate in front of the retaining foot on the sealing element). Therefore, it is particularly advantageous for the separation of the gas turbine flowing through the hot gas, when a sealing portion is arranged on the sealing element, which extends axially opposite to the end face of the rotor disk and in the circumferential direction.
  • the sealing portion on the radially outwardly facing side extending in the circumferential direction, axially-radially aligned sealing ribs.
  • the sealing portion can effect an advantageous sealing cooperatively with another component, for example a stator ring.
  • FIGS. 1 to 13 a first embodiment of a rotor according to the invention is shown. It can be seen in the Fig. 1 In the blade holding grooves 02 are fixed circumferentially distributed blades 11. In front of a front side of the rotor disk 01 circumferentially distributed sealing elements 21 are fixed, which are 21 axially secured by a securing element 31 ,
  • FIG. 2 This shows the Fig. 2 the execution Fig. 1 in a perspective sectional view.
  • the sealing elements 21 hereby partially cover the blade retaining grooves 02 in the radially outer region and in this case extend as far as the rotor blades 11. In the radially lower region on the side facing the rotor axis, the sealing elements 21 are fastened in the blade retaining grooves 02.
  • the rotor disk 01 is shown.
  • the blade holding grooves 02 which extend axially through the rotor disk 01, can be seen.
  • the rotor disk 01 has an extension 03 in the form of a shoulder, so that the blade retaining grooves 02 extend axially in the region of the extension 03 over the overlying end face of the rotor disk 01.
  • each fuse receptacles 08 are arranged between the blade retaining grooves 02, which 08 in this case in the form of a are designed axially opening T-slot.
  • the blade 11 is shown pre-assembled with the sealing element 21.
  • a blade platform 13 connects, which 13 extends in the circumferential direction and axially.
  • a ring segment groove 16 which extends in the circumferential direction and opens radially to the rotor axis.
  • the sealing element 21 In front of an end face of the blade root 12 extending in the circumferential direction beyond the blade root 12, the sealing element 21 is located. This 21 is axially mounted with an outer edge portion 26 in the Ringsegmentnut 16.
  • the sealing element 21 is shown in a perspective view. Evident is its flat, circumferentially and radially extending shape with the outer edge portion 26.
  • the sealing element 21 On the side facing the rotor axis, the sealing element 21 has a retaining foot 22. This 22 is in this case designed to be complementary to blade holding groove 02.
  • the sealing element 21 has a sealing portion 24, which extends axially from the flat basic shape of the sealing element 21, starting axially and in the circumferential direction opposite to the blade.
  • the sealing portion 24 in this case has circumferentially extending axially-radially aligned sealing ribs.
  • the rotor is shown in section in the region of the sealing element 21.
  • the rotor disk 01 and the blade platform 13 of the rotor blade 11 can be seen again.
  • the sealing element 21, which is mounted with the outer edge portion 26 in the annular segment groove 16 of the rotor blade 11, is located in front of the end face of the rotor disk 01.
  • the area of the holding foot 22 is shown enlarged.
  • the rotor disk 01 with the extension 03 as well as the in the blade holding groove 02 fixed blade 11, which has a further 11 extending in the axial direction of the investment projection 17 in contact with the back of the sealing element 21.
  • the retaining foot 22 is fixed in the axial direction by means of the securing element 31.
  • An improved seal between the sealing element 21 and the radially outwardly facing top of the extension 03 is achieved by the arrangement of a sealing strip 36 in the sealing groove 09.
  • FIG. 13 Now another embodiment is outlined.
  • a rotor disk 61 with the sealing elements 81 fastened in blade holding grooves 62 can be seen.
  • the rotor disk 61 analogously has an extension 63 extending axially in front of an end face for the corresponding widening of the blade retaining grooves 62 in the radially lower region.
  • an abutment paragraph 67 for the axial support of the sealing elements 81 is present.
  • An advantageous sealing portion 84 with extending in the circumferential direction Sealing ribs is arranged directly radially outside of the holding foot 82 in this embodiment.
EP18150975.3A 2018-01-10 2018-01-10 Rotor doté des éléments d'étanchéité montés au niveau des rainures de maintien de l'aube de rotor Withdrawn EP3511524A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18150975.3A EP3511524A1 (fr) 2018-01-10 2018-01-10 Rotor doté des éléments d'étanchéité montés au niveau des rainures de maintien de l'aube de rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18150975.3A EP3511524A1 (fr) 2018-01-10 2018-01-10 Rotor doté des éléments d'étanchéité montés au niveau des rainures de maintien de l'aube de rotor

Publications (1)

Publication Number Publication Date
EP3511524A1 true EP3511524A1 (fr) 2019-07-17

Family

ID=60953771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18150975.3A Withdrawn EP3511524A1 (fr) 2018-01-10 2018-01-10 Rotor doté des éléments d'étanchéité montés au niveau des rainures de maintien de l'aube de rotor

Country Status (1)

Country Link
EP (1) EP3511524A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137478A (en) * 1962-07-11 1964-06-16 Gen Electric Cover plate assembly for sealing spaces between turbine buckets
EP1081337A2 (fr) * 1999-08-31 2001-03-07 General Electric Company Plaques de couverture pour des aubes de turbomachines
EP2400116A2 (fr) * 2010-06-25 2011-12-28 General Electric Company Dispositif d'étanchéité d'un pied d'aube
EP2674577A2 (fr) * 2012-06-12 2013-12-18 General Electric Company Ensemble de fixation d'aube rotorique pour turbomachine et turbomachine associée
US20140363279A1 (en) * 2013-06-10 2014-12-11 General Electric Company Non-integral segmented angel-wing seal
EP3090135A2 (fr) 2014-04-29 2016-11-09 Siemens Aktiengesellschaft Agencement de disque de roue et procédé de montage d'un agencement de disque de roue
EP3129600A1 (fr) 2014-07-17 2017-02-15 Siemens Aktiengesellschaft Ensemble formant disque de roue

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137478A (en) * 1962-07-11 1964-06-16 Gen Electric Cover plate assembly for sealing spaces between turbine buckets
EP1081337A2 (fr) * 1999-08-31 2001-03-07 General Electric Company Plaques de couverture pour des aubes de turbomachines
EP2400116A2 (fr) * 2010-06-25 2011-12-28 General Electric Company Dispositif d'étanchéité d'un pied d'aube
EP2674577A2 (fr) * 2012-06-12 2013-12-18 General Electric Company Ensemble de fixation d'aube rotorique pour turbomachine et turbomachine associée
US20140363279A1 (en) * 2013-06-10 2014-12-11 General Electric Company Non-integral segmented angel-wing seal
EP3090135A2 (fr) 2014-04-29 2016-11-09 Siemens Aktiengesellschaft Agencement de disque de roue et procédé de montage d'un agencement de disque de roue
EP3129600A1 (fr) 2014-07-17 2017-02-15 Siemens Aktiengesellschaft Ensemble formant disque de roue

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