EP2634376A3 - Turbo-machinery sealing arrangement - Google Patents

Turbo-machinery sealing arrangement Download PDF

Info

Publication number
EP2634376A3
EP2634376A3 EP13157095.4A EP13157095A EP2634376A3 EP 2634376 A3 EP2634376 A3 EP 2634376A3 EP 13157095 A EP13157095 A EP 13157095A EP 2634376 A3 EP2634376 A3 EP 2634376A3
Authority
EP
European Patent Office
Prior art keywords
rotating body
stator
seal fin
seal
turbo
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Withdrawn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
EP13157095.4A
Other languages
German (de)
French (fr)
Other versions
EP2634376A2 (en
Inventor
Akira Endo
Kazuyuki Yamaguchi
Yohei Magara
Toyomi Yoshida
Kenichi Murata
Takeshi Kudo
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.)
Mitsubishi Power Ltd
Original Assignee
Mitsubishi Hitachi Power Systems Ltd
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 Mitsubishi Hitachi Power Systems Ltd filed Critical Mitsubishi Hitachi Power Systems Ltd
Publication of EP2634376A2 publication Critical patent/EP2634376A2/en
Publication of EP2634376A3 publication Critical patent/EP2634376A3/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Withdrawn legal-status Critical Current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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • 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
    • F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and rotor
    • 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
    • F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
    • 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
    • F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
    • F01D11/122—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
    • 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
    • F01D25/04—Antivibration arrangements
    • 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
    • F05D2200/30—Mathematical features miscellaneous
    • F05D2200/33—Mathematical features miscellaneous bigger or smaller
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Turbo machinery includes a rotating body (2), a stator (3, 4, 5), and a labyrinth seal (11) disposed in a gap between the rotating body and the stator. The labyrinth seal (11) includes a first seal fin (12) and a second seal fin (14). The first seal fin (12) protrudes fromaportionof one of the rotating body and the stator, which is disposed on the high-pressure side of the center of the labyrinth seal in the axial direction of the rotating body, toward an opposing portion of the other one of the rotating body and the stator. The second seal fin (14) is disposed on the low-pressure side of the first seal fin to form a cavity (13) together with the first seal fin and protrude from a portion of one of the rotating body and the stator toward an opposing portion of the other one of the rotating body and the stator. A gap to the portion opposing the first seal fin (12) is smaller than a gap to the portion opposing the second seal fin (14).
EP13157095.4A 2012-02-29 2013-02-28 Turbo-machinery sealing arrangement Withdrawn EP2634376A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012042693A JP2013177866A (en) 2012-02-29 2012-02-29 Turbomachine

Publications (2)

Publication Number Publication Date
EP2634376A2 EP2634376A2 (en) 2013-09-04
EP2634376A3 true EP2634376A3 (en) 2016-04-13

Family

ID=47757452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13157095.4A Withdrawn EP2634376A3 (en) 2012-02-29 2013-02-28 Turbo-machinery sealing arrangement

Country Status (4)

Country Link
US (1) US20130223998A1 (en)
EP (1) EP2634376A3 (en)
JP (1) JP2013177866A (en)
CN (1) CN103291379B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013219766A1 (en) * 2013-09-30 2015-04-16 Siemens Aktiengesellschaft Adhesive seal and seal arrangement
WO2016121207A1 (en) 2015-01-27 2016-08-04 三菱日立パワーシステムズ株式会社 Rotary machine
JP7051656B2 (en) * 2018-09-28 2022-04-11 三菱重工コンプレッサ株式会社 Turbine stators, steam turbines, and dividers
JP7281991B2 (en) * 2019-07-23 2023-05-26 三菱重工業株式会社 sealing member and rotary machine
CN112796841B (en) * 2020-12-25 2022-03-15 东方电气集团东方汽轮机有限公司 Structure for reducing steam leakage of gap bridge steam seal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154556U (en) * 1984-09-14 1986-04-12
JPH0343502U (en) * 1989-09-05 1991-04-24
WO1994016251A1 (en) * 1993-01-08 1994-07-21 The Texas A&M University System Pressure damper seals
US5967746A (en) * 1997-07-30 1999-10-19 Mitsubishi Heavy Industries, Ltd. Gas turbine interstage portion seal device
US20120003080A1 (en) * 2010-06-30 2012-01-05 General Electric Company Method and apparatus for labyrinth seal packing rings

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529904A (en) * 1968-10-28 1970-09-22 Westinghouse Electric Corp Diaphragm seal structure
JPS6469798A (en) * 1987-09-11 1989-03-15 Hitachi Ltd Fixed bush for sealing pump shaft
JPH0488566U (en) * 1990-12-18 1992-07-31
JPH0719005A (en) 1993-06-30 1995-01-20 Toshiba Corp Labyrinth seal device
JPH10141005A (en) * 1996-11-08 1998-05-26 Mitsubishi Heavy Ind Ltd Seal device and centrifugal compressor using it
JP3567064B2 (en) * 1997-06-23 2004-09-15 株式会社 日立インダストリイズ Labyrinth seal device and fluid machine provided with the same
JP2002228013A (en) * 2001-02-01 2002-08-14 Mitsubishi Heavy Ind Ltd Acc type labyrinth seal
CN1704561A (en) * 2004-06-02 2005-12-07 王胜五 Honeycomb contact steam seal
US7344357B2 (en) * 2005-09-02 2008-03-18 General Electric Company Methods and apparatus for assembling a rotary machine
US7780407B2 (en) * 2006-01-04 2010-08-24 General Electric Company Rotary machines and methods of assembling
JP4655123B2 (en) * 2008-08-07 2011-03-23 株式会社日立プラントテクノロジー Centrifugal compressor
US8570505B2 (en) * 2012-03-06 2013-10-29 Siemens Energy, Inc. One-dimensional coherent fiber array for inspecting components in a gas turbine engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154556U (en) * 1984-09-14 1986-04-12
JPH0343502U (en) * 1989-09-05 1991-04-24
WO1994016251A1 (en) * 1993-01-08 1994-07-21 The Texas A&M University System Pressure damper seals
US5967746A (en) * 1997-07-30 1999-10-19 Mitsubishi Heavy Industries, Ltd. Gas turbine interstage portion seal device
US20120003080A1 (en) * 2010-06-30 2012-01-05 General Electric Company Method and apparatus for labyrinth seal packing rings

Also Published As

Publication number Publication date
EP2634376A2 (en) 2013-09-04
CN103291379A (en) 2013-09-11
JP2013177866A (en) 2013-09-09
US20130223998A1 (en) 2013-08-29
CN103291379B (en) 2016-08-17

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