EP0712995A1 - Rotor portant des aubes - Google Patents

Rotor portant des aubes Download PDF

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Publication number
EP0712995A1
EP0712995A1 EP95810673A EP95810673A EP0712995A1 EP 0712995 A1 EP0712995 A1 EP 0712995A1 EP 95810673 A EP95810673 A EP 95810673A EP 95810673 A EP95810673 A EP 95810673A EP 0712995 A1 EP0712995 A1 EP 0712995A1
Authority
EP
European Patent Office
Prior art keywords
rotor
blade
bolt
groove
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.)
Pending
Application number
EP95810673A
Other languages
German (de)
English (en)
Inventor
Siegfried Hohmann
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.)
ABB Management AG
Original Assignee
ABB Management 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 ABB Management AG filed Critical ABB Management AG
Publication of EP0712995A1 publication Critical patent/EP0712995A1/fr
Pending 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
    • F01D5/32—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
    • F05D2200/00—Mathematical features
    • F05D2200/10—Basic functions
    • F05D2200/11—Sum
    • 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
    • F05D2260/38—Retaining components in desired mutual position by a spring, i.e. spring loaded or biased towards a certain position

Definitions

  • the invention relates to a bladed rotor of a turbomachine, in which the rotor blades are fastened with their feet in substantially axially running blade grooves of the rotor.
  • Bladed rotors of this type are known.
  • the blades fastened in the axial grooves are fixed in their axial position.
  • a circumferential, T-shaped groove is provided in the wheel rim at the level of the groove base of the axial grooves, above all for fixing the end stage rotor blade rows.
  • the T-shaped groove is designed in the same way as conventional circumferential blade grooves, but is arranged in the wheel rim rotated by 90 degrees.
  • a T-shaped groove is fitted for each row of blades with curved and oblique axial grooves. Due to the position of the T-groove at the level of the groove base of the blade groove, the T-groove runs through the blade root.
  • L-shaped elements that are curved according to the circumference of the rotor can be inserted.
  • Two L-shaped elements next to each other pushed together to form a T and completely fill the T-shaped groove.
  • the L-shaped elements are segmented over the circumference. The individual segments are at least wider than the blade root and usually cover approximately three blade roots or grooves.
  • the L-shaped elements are pushed into the T-shaped groove in segments one after the other.
  • Narrower L-shaped elements are used as end elements, which can be pushed in together through the opening.
  • a wedge is driven in between these two elements, which is additionally fixed.
  • the invention has for its object to make the axial securing of the blades easier and cheaper in a bladed rotor of the type mentioned.
  • the rotor blades are each axially fixed in the blade groove by at least one movable bolt which is resiliently mounted via a spring-like element and connects the blade root to the blade groove.
  • a rotor 1 is provided with rotor blades 5.
  • the blades 5 consist of an only partially illustrated blade 4 and a blade root 3.
  • the blades are inserted with the blade roots 3 in blade grooves 2 of the rotor 1 which run essentially in the longitudinal direction.
  • the blade root 3 is in the form of a fir tree with a plurality of teeth 11. Accordingly, the blade grooves 2 in the drum rotor 1 are also formed with teeth 20.
  • the blades 5 are accelerated radially outward, being held back by the drum rotor 1 by the fir tree-shaped attachment.
  • the bore 9 lies completely in the axial projection 12 of the blade root 3.
  • the bore 9 is therefore outside that area of the blade root 3 which is loaded when the rotor 1 rotates.
  • the blade root is not weakened by the bore 9.
  • a further bore 13 is made in the axial projection 12 above the bolt 6.
  • the diameter of the bore 13 is smaller than that of the bore 9.
  • the spring 7 and then the bolt 6 are inserted into the bore 8.
  • the bolt 6 can be pressed down so far into the bore 8 that it no longer protrudes beyond the groove base of the blade groove 2.
  • the blades 5 are inserted into the axial blade grooves 2 and pushed over the depressed bolt 6 until the bore 9 is above the bore 8.
  • the bolt 6 is pressed upwards by the spring 7 and penetrates into the bore 9, as a result of which the rotor blade is axially fixed.
  • the spring 7 must of course be designed so that the spring force is at least as large as the sum of the friction of the bolt 6 in the bores 8 and 9 and the weight of the bolt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP95810673A 1994-11-19 1995-10-30 Rotor portant des aubes Pending EP0712995A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4441233A DE4441233A1 (de) 1994-11-19 1994-11-19 Beschaufelter Rotor
DE4441233 1994-11-19

Publications (1)

Publication Number Publication Date
EP0712995A1 true EP0712995A1 (fr) 1996-05-22

Family

ID=6533664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810673A Pending EP0712995A1 (fr) 1994-11-19 1995-10-30 Rotor portant des aubes

Country Status (4)

Country Link
EP (1) EP0712995A1 (fr)
JP (1) JPH08210103A (fr)
CN (1) CN1130713A (fr)
DE (1) DE4441233A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1764479A1 (fr) * 2005-09-15 2007-03-21 ALSTOM Technology Ltd Plaques de virole couplées pour une série d'aubes d'une turbomachine
WO2007031383A1 (fr) * 2005-09-15 2007-03-22 Alstom Technology Ltd Aube d'une turbomachine pourvue d'un ancrage liberable pour une plaque de couverture separee
WO2007031408A1 (fr) * 2005-09-15 2007-03-22 Alstom Technology Ltd Bande de couverture a ancrage liberable pour une rangee d'aubes d'une turbomachine
CN100351496C (zh) * 2002-10-31 2007-11-28 通用电气公司 用于蒸汽涡轮机反作用式叶片的连续径向荷载装置及方法
EP1860280A1 (fr) * 2006-04-07 2007-11-28 Siemens Aktiengesellschaft Dispositif de verrouillage d'une aube de turbine comprenant un élément de verrouillage
EP2299060A1 (fr) * 2009-09-17 2011-03-23 Siemens Aktiengesellschaft Fixation des aubes avec dispositif de verrouillage pour aubes de turbines
EP2562357A1 (fr) * 2011-08-24 2013-02-27 General Electric Company Ensemble insert de tuteurage remplaçable et procédé associé
US9995155B2 (en) 2014-10-07 2018-06-12 Rolls-Royce Plc Locking member

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024932A1 (de) * 2005-05-31 2006-12-07 Rolls-Royce Deutschland Ltd & Co Kg Turbinenschaufelaxialsperre
FR2903154B1 (fr) * 2006-06-29 2011-10-28 Snecma Rotor de turbomachine et turbomachine comportant un tel rotor
JP5692994B2 (ja) * 2009-12-08 2015-04-01 三菱重工業株式会社 動翼固定構造およびこれを備えた回転機械ならびに動翼着脱方法
US20120087799A1 (en) * 2010-10-12 2012-04-12 General Electric Company Axial retention device for turbine system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846183A (en) * 1952-07-18 1958-08-05 William C Morgan Retaining devices for turbine blades
US2847187A (en) * 1955-01-21 1958-08-12 United Aircraft Corp Blade locking means
US2953348A (en) * 1952-12-30 1960-09-20 Gen Motors Corp Blade fastenings
FR2273155A1 (fr) * 1974-05-27 1975-12-26 Bbc Sulzer Turbomaschinen
DE2850941A1 (de) * 1978-11-24 1980-06-12 Motoren Turbinen Union Turborotor mit keramikschaufeln

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341871A1 (de) * 1983-11-19 1985-05-30 Brown, Boveri & Cie Ag, 6800 Mannheim Axialverdichter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846183A (en) * 1952-07-18 1958-08-05 William C Morgan Retaining devices for turbine blades
US2953348A (en) * 1952-12-30 1960-09-20 Gen Motors Corp Blade fastenings
US2847187A (en) * 1955-01-21 1958-08-12 United Aircraft Corp Blade locking means
FR2273155A1 (fr) * 1974-05-27 1975-12-26 Bbc Sulzer Turbomaschinen
DE2850941A1 (de) * 1978-11-24 1980-06-12 Motoren Turbinen Union Turborotor mit keramikschaufeln

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100351496C (zh) * 2002-10-31 2007-11-28 通用电气公司 用于蒸汽涡轮机反作用式叶片的连续径向荷载装置及方法
EP1764479A1 (fr) * 2005-09-15 2007-03-21 ALSTOM Technology Ltd Plaques de virole couplées pour une série d'aubes d'une turbomachine
WO2007031383A1 (fr) * 2005-09-15 2007-03-22 Alstom Technology Ltd Aube d'une turbomachine pourvue d'un ancrage liberable pour une plaque de couverture separee
WO2007031408A1 (fr) * 2005-09-15 2007-03-22 Alstom Technology Ltd Bande de couverture a ancrage liberable pour une rangee d'aubes d'une turbomachine
US7874791B2 (en) 2005-09-15 2011-01-25 Alstom Technology Ltd. Turbomachine
EP1860280A1 (fr) * 2006-04-07 2007-11-28 Siemens Aktiengesellschaft Dispositif de verrouillage d'une aube de turbine comprenant un élément de verrouillage
CN102498264A (zh) * 2009-09-17 2012-06-13 西门子公司 具有用于涡轮叶片的固定装置的叶片固定装置
WO2011033063A1 (fr) * 2009-09-17 2011-03-24 Siemens Aktiengesellschaft Fixation d'aube avec dispositif de sécurité pour aubes de turbine
EP2299060A1 (fr) * 2009-09-17 2011-03-23 Siemens Aktiengesellschaft Fixation des aubes avec dispositif de verrouillage pour aubes de turbines
US8956122B2 (en) 2009-09-17 2015-02-17 Siemens Aktiengesellschaft Blade fastening having safety device for turbine blades
CN102498264B (zh) * 2009-09-17 2015-02-25 西门子公司 具有用于涡轮叶片的固定装置的叶片固定装置
EP2562357A1 (fr) * 2011-08-24 2013-02-27 General Electric Company Ensemble insert de tuteurage remplaçable et procédé associé
CN102954034A (zh) * 2011-08-24 2013-03-06 通用电气公司 可更换式桩定插件组件和方法
US8992180B2 (en) 2011-08-24 2015-03-31 General Electric Company Replaceable staking insert assembly and method
CN102954034B (zh) * 2011-08-24 2016-12-07 通用电气公司 可更换式桩定插件组件和方法
US9995155B2 (en) 2014-10-07 2018-06-12 Rolls-Royce Plc Locking member

Also Published As

Publication number Publication date
DE4441233A1 (de) 1996-05-23
CN1130713A (zh) 1996-09-11
JPH08210103A (ja) 1996-08-20

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