EP1862642A3 - Rotor blade of a first phase of a vapor turbine with a fork foot and covering belt - Google Patents

Rotor blade of a first phase of a vapor turbine with a fork foot and covering belt Download PDF

Info

Publication number
EP1862642A3
EP1862642A3 EP07108516A EP07108516A EP1862642A3 EP 1862642 A3 EP1862642 A3 EP 1862642A3 EP 07108516 A EP07108516 A EP 07108516A EP 07108516 A EP07108516 A EP 07108516A EP 1862642 A3 EP1862642 A3 EP 1862642A3
Authority
EP
European Patent Office
Prior art keywords
blades
rotor
phase
rotor blade
vapor turbine
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Withdrawn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
EP07108516A
Other languages
German (de)
French (fr)
Other versions
EP1862642A2 (en
Inventor
Carlo Cortese
Paolo Bendinelli
Vincenzo Vecchiarino
Fabio Valeri
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.)
Nuovo Pignone SpA
Original Assignee
Nuovo Pignone SpA
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 Nuovo Pignone SpA filed Critical Nuovo Pignone SpA
Publication of EP1862642A2 publication Critical patent/EP1862642A2/en
Publication of EP1862642A3 publication Critical patent/EP1862642A3/en
Withdrawn legal-status Critical Current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
    • F01D5/12—Blades
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
    • 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
    • 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
    • F01D5/12—Blades
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • 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
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • 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
    • F01D5/3053—Fixing blades to rotors; Blade roots ; Blade spacers by means of pins
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • 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
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)

Abstract

A rotor for traction engines, in particular of a first phase of a vapor turbine, comprising a series of blades (12) arranged circumferentially on the rotor by the interposition of a base portion (18) formed in a single piece with the blades (12), on the opposite portion of the blades (12) with respect to the base portion (18), one or more covering belts (24) also being envisaged which group the blades (12) of the rotor in packs. The blades (12) and the covering belts (24) are coupled by the riveting of pins (26) integrated with the blades (12), and the coupling between the base portion or foot (18) of the blades (12) and the main body or disk (22) of the rotor is effected by fork insertion in the radial direction of the rotor.
EP07108516A 2006-05-31 2007-05-21 Rotor blade of a first phase of a vapor turbine with a fork foot and covering belt Withdrawn EP1862642A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001064A ITMI20061064A1 (en) 2006-05-31 2006-05-31 ROTORIC SHOVEL OF A FIRST STAGE OF A VAèPORE TURBINE WITH FORK FOOT AND COVERING TAPE

Publications (2)

Publication Number Publication Date
EP1862642A2 EP1862642A2 (en) 2007-12-05
EP1862642A3 true EP1862642A3 (en) 2009-03-25

Family

ID=38457565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07108516A Withdrawn EP1862642A3 (en) 2006-05-31 2007-05-21 Rotor blade of a first phase of a vapor turbine with a fork foot and covering belt

Country Status (6)

Country Link
US (1) US20080044286A1 (en)
EP (1) EP1862642A3 (en)
JP (1) JP2007321762A (en)
KR (1) KR20070115704A (en)
CN (1) CN101082287A (en)
IT (1) ITMI20061064A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008031780A1 (en) * 2008-07-04 2010-01-07 Man Turbo Ag Blade and turbomachine with blade
KR101114534B1 (en) * 2009-08-14 2012-02-27 두산중공업 주식회사 Aseembly method of Finger type bucket
EP2690254B1 (en) * 2012-07-27 2017-04-26 General Electric Technology GmbH Turbine rotor blade root attachments

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5299915A (en) * 1992-07-15 1994-04-05 General Electric Corporation Bucket for the last stage of a steam turbine
EP1331362A2 (en) * 2002-01-28 2003-07-30 Kabushiki Kaisha Toshiba Geothermal steam turbine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066384A (en) * 1975-07-18 1978-01-03 Westinghouse Electric Corporation Turbine rotor blade having integral tenon thereon and split shroud ring associated therewith
US5238368A (en) * 1991-01-16 1993-08-24 Ortolano Ralph J Converting grouped blading to equivalent integral covered blading
WO1999013200A1 (en) * 1997-09-05 1999-03-18 Hitachi, Ltd. Steam turbine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5299915A (en) * 1992-07-15 1994-04-05 General Electric Corporation Bucket for the last stage of a steam turbine
EP1331362A2 (en) * 2002-01-28 2003-07-30 Kabushiki Kaisha Toshiba Geothermal steam turbine

Also Published As

Publication number Publication date
ITMI20061064A1 (en) 2007-12-01
CN101082287A (en) 2007-12-05
JP2007321762A (en) 2007-12-13
US20080044286A1 (en) 2008-02-21
KR20070115704A (en) 2007-12-06
EP1862642A2 (en) 2007-12-05

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