EP2617951A3 - Tip cover of a steam turbine for the drainage of water droplets - Google Patents

Tip cover of a steam turbine for the drainage of water droplets Download PDF

Info

Publication number
EP2617951A3
EP2617951A3 EP13151786.4A EP13151786A EP2617951A3 EP 2617951 A3 EP2617951 A3 EP 2617951A3 EP 13151786 A EP13151786 A EP 13151786A EP 2617951 A3 EP2617951 A3 EP 2617951A3
Authority
EP
European Patent Office
Prior art keywords
blades
tip
tip cover
leading edge
axial direction
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Withdrawn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
EP13151786.4A
Other languages
German (de)
French (fr)
Other versions
EP2617951A2 (en
Inventor
Tomohiko Tsukuda
Hiroshi Kawakami
Sakae Kawasaki
Naoki Shibukawa
Shinichiro Ohashi
Yoshifumi Iwasaki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Publication of EP2617951A2 publication Critical patent/EP2617951A2/en
Publication of EP2617951A3 publication Critical patent/EP2617951A3/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Withdrawn legal-status Critical Current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
    • F01D5/14—Form or construction
    • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
    • 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
    • F01D5/14—Form or construction
    • 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
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • F05B2260/602—Drainage

Landscapes

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

Abstract

A steam turbine includes: a turbine rotor shaft; a plurality of blades that are provided on the turbine rotor shaft and are rotated by a steam flow; tip covers that are attached to tip ends of the respective blades and are connected to and in contact with one another; at least one water drip fin that is provided along a circumferential direction at the tip cover, and outwardly extends in a radial direction of each of the blades; and a diaphragm outer ring that is disposed at an outer circumferential side from each of the blades, and has a drain catcher opposed to a tip end portion of the water drip fin, wherein the tip cover is provided with a leading edge that is formed at a downstream side in an axial direction from a leading edge of the blade or at a position in the axial direction corresponding to the leading edge of the blade in the axial direction.
EP13151786.4A 2012-01-19 2013-01-18 Tip cover of a steam turbine for the drainage of water droplets Withdrawn EP2617951A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012008849A JP5823305B2 (en) 2012-01-19 2012-01-19 Steam turbine and steam turbine blades

Publications (2)

Publication Number Publication Date
EP2617951A2 EP2617951A2 (en) 2013-07-24
EP2617951A3 true EP2617951A3 (en) 2014-08-27

Family

ID=47563264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13151786.4A Withdrawn EP2617951A3 (en) 2012-01-19 2013-01-18 Tip cover of a steam turbine for the drainage of water droplets

Country Status (3)

Country Link
US (1) US20130189077A1 (en)
EP (1) EP2617951A3 (en)
JP (1) JP5823305B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6125351B2 (en) * 2013-06-27 2017-05-10 株式会社東芝 Steam turbine
JP6066948B2 (en) * 2014-03-13 2017-01-25 三菱重工業株式会社 Shroud, blades, and rotating machinery
CN104061023A (en) * 2014-06-23 2014-09-24 中国船舶重工集团公司第七�三研究所 Marine turbine dehumidification device
EP3009610B1 (en) * 2014-10-14 2020-11-25 General Electric Technology GmbH Steam turbine rotor seal arrangement
JP6539525B2 (en) * 2015-07-09 2019-07-03 株式会社東芝 Turbine bucket
DE112019003577T5 (en) * 2018-07-13 2021-06-24 Mitsubishi Power, Ltd. Flow guide, steam turbine, inner element and method for producing flow guide
CN110043336A (en) * 2019-05-21 2019-07-23 中国船舶重工集团公司第七0三研究所 A kind of ocean movable type nuclear steam turbine outer rim dehumidification device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU510583A1 (en) * 1974-09-30 1976-04-15 Харьковский Филиал Центрального Конструкторского Бюро Главэнергоремонта Turbine stage for wet steam operation
JPS5752602A (en) * 1980-09-16 1982-03-29 Toshiba Corp Steam-water separator in steam turbine
US5234318A (en) * 1993-01-22 1993-08-10 Brandon Ronald E Clip-on radial tip seals for steam and gas turbines
US5261785A (en) * 1992-08-04 1993-11-16 General Electric Company Rotor blade cover adapted to facilitate moisture removal
US20040223844A1 (en) * 2003-05-07 2004-11-11 Farrell Alison Carol Method and apparatus to facilitate sealing within turbines
WO2011007506A1 (en) * 2009-07-14 2011-01-20 株式会社 東芝 Steam turbine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304056A (en) * 1965-03-19 1967-02-14 Hitachi Ltd Turbine blades
JPH11159302A (en) * 1997-11-25 1999-06-15 Hitachi Ltd Moving blade of steam turbine
JP4387697B2 (en) * 2003-06-12 2009-12-16 株式会社東芝 Steam turbine seal device and steam turbine provided with the same
JP5025241B2 (en) * 2006-12-01 2012-09-12 株式会社東芝 Turbine blades and steam turbines
JP2009138540A (en) * 2007-12-04 2009-06-25 Toshiba Corp Steam turbine and moisture removing structure for steam turbine stage
GB2475704A (en) * 2009-11-26 2011-06-01 Alstom Technology Ltd Diverting solid particles in an axial flow steam turbine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU510583A1 (en) * 1974-09-30 1976-04-15 Харьковский Филиал Центрального Конструкторского Бюро Главэнергоремонта Turbine stage for wet steam operation
JPS5752602A (en) * 1980-09-16 1982-03-29 Toshiba Corp Steam-water separator in steam turbine
US5261785A (en) * 1992-08-04 1993-11-16 General Electric Company Rotor blade cover adapted to facilitate moisture removal
US5234318A (en) * 1993-01-22 1993-08-10 Brandon Ronald E Clip-on radial tip seals for steam and gas turbines
US20040223844A1 (en) * 2003-05-07 2004-11-11 Farrell Alison Carol Method and apparatus to facilitate sealing within turbines
WO2011007506A1 (en) * 2009-07-14 2011-01-20 株式会社 東芝 Steam turbine

Also Published As

Publication number Publication date
EP2617951A2 (en) 2013-07-24
JP2013147999A (en) 2013-08-01
JP5823305B2 (en) 2015-11-25
US20130189077A1 (en) 2013-07-25

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