EP2246524A3 - Seal structure and control method therefor - Google Patents

Seal structure and control method therefor Download PDF

Info

Publication number
EP2246524A3
EP2246524A3 EP10161505.2A EP10161505A EP2246524A3 EP 2246524 A3 EP2246524 A3 EP 2246524A3 EP 10161505 A EP10161505 A EP 10161505A EP 2246524 A3 EP2246524 A3 EP 2246524A3
Authority
EP
European Patent Office
Prior art keywords
seal
contact
fins
breathable spacers
rotor
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Withdrawn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
EP10161505.2A
Other languages
German (de)
French (fr)
Other versions
EP2246524A2 (en
Inventor
Kenjiro Narita
Haruyuki Yamazaki
Hiroyuki Doi
Kei Kobayashi
Hajime Toriya
Takeshi Kudo
Yoshitaka Kojima
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 EP2246524A2 publication Critical patent/EP2246524A2/en
Publication of EP2246524A3 publication Critical patent/EP2246524A3/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Withdrawn legal-status Critical Current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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
    • 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
    • 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
    • F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
    • 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
    • F05D2240/00—Components
    • F05D2240/55—Seals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

The invention discloses a seal structure and a control method therefor that can improve sealing performance between a rotating portion and a fixed portion, smoothly start up a steam turbine (2), and suppress the temperature rise of the rotating portion even if the rotating portion is continuously rotated for a long period of time.
A seal structure is configured such that seal fins (62) on a seal base-plate (61) side and corresponding breathable spacers (4b) on a rotor (2a) side are opposed to each other and breathable spacers (4a) on the seal base-plate (61) side and corresponding seal fins (2a1) on the rotor (2a) side are opposed to each other. The seal base-plate (61) is installed shiftably in a direction coming close to or moving away from the rotor (2a). If steam St has low pressure, the seal fins (62) and the corresponding breathable spacers (4b) are not in contact with each other and the seal fins (2a1) and the corresponding breathable spacers (4a) are not in contact with each other. If the steam St has high pressure, the seal fins (62) and the corresponding breathable spacers (4b) are in contact with each other and the seal fins (2a1) and the corresponding breathable spacers (4a) are in contact with each other.
EP10161505.2A 2009-05-01 2010-04-29 Seal structure and control method therefor Withdrawn EP2246524A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009112332A JP5411569B2 (en) 2009-05-01 2009-05-01 Seal structure and control method

Publications (2)

Publication Number Publication Date
EP2246524A2 EP2246524A2 (en) 2010-11-03
EP2246524A3 true EP2246524A3 (en) 2017-10-18

Family

ID=42275618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10161505.2A Withdrawn EP2246524A3 (en) 2009-05-01 2010-04-29 Seal structure and control method therefor

Country Status (4)

Country Link
US (1) US20100278645A1 (en)
EP (1) EP2246524A3 (en)
JP (1) JP5411569B2 (en)
CN (1) CN101876259A (en)

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JP4668976B2 (en) * 2007-12-04 2011-04-13 株式会社日立製作所 Steam turbine seal structure
JP5427798B2 (en) * 2011-01-14 2014-02-26 株式会社日立製作所 Steam turbine seal structure
ITCO20110013A1 (en) * 2011-03-29 2012-09-30 Nuovo Pignone Spa LOCKING SYSTEMS FOR TURBO-EXTRACTORS TO BE USED IN ORGANIC RANKINE CYCLES
JP5717566B2 (en) * 2011-07-13 2015-05-13 株式会社東芝 Seal device and steam turbine
JP5308548B2 (en) * 2012-02-06 2013-10-09 三菱重工業株式会社 Seal structure and rotary machine equipped with the same
CN102619577B (en) * 2012-04-06 2015-06-10 东南大学 Device for inhibiting clearance leakage of blade tip and reducing steam flow exciting force
JP5892880B2 (en) * 2012-07-03 2016-03-23 三菱日立パワーシステムズ株式会社 Rotary machine seal structure and rotary machine
JP5936515B2 (en) * 2012-10-18 2016-06-22 三菱日立パワーシステムズ株式会社 Rotating machine
US9995164B2 (en) * 2012-12-13 2018-06-12 Mitsubishi Hitachi Power Systems, Ltd. Rotating fluid machine
CN103075204B (en) * 2013-01-25 2015-11-18 潍坊雷诺特动力设备有限公司 Back steam seal device of steam turbine
DE202013012218U1 (en) * 2013-10-24 2015-09-21 Man Diesel & Turbo Se sealing system
WO2016022136A1 (en) * 2014-08-08 2016-02-11 Siemens Energy, Inc. Interstage seal housing optimization system in a gas turbine engine
CN104654786B (en) * 2015-02-10 2016-08-31 烽火通信科技股份有限公司 A kind of motion seal part of preheating furnace
JP6601677B2 (en) * 2016-02-16 2019-11-06 三菱日立パワーシステムズ株式会社 Sealing device and rotating machine
JP2018035717A (en) * 2016-08-30 2018-03-08 三菱日立パワーシステムズ株式会社 Seal device segment, turbine rotor including the same, and turbine
FR3058495B1 (en) * 2016-11-09 2019-06-28 Safran Aircraft Engines DOUBLE SHAPE SEALING DEVICE, LABYRINTH SEAL AND MOBILE LATCH
US11519288B2 (en) * 2020-12-18 2022-12-06 General Electric Company Turbomachine clearance control using brush seals having magnetically responsive filaments

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US3825364A (en) * 1972-06-09 1974-07-23 Gen Electric Porous abradable turbine shroud
US20070248452A1 (en) * 2006-04-25 2007-10-25 Brisson Bruce W Retractable compliant abradable sealing system and method for rotary machines
EP2372103A1 (en) * 2007-12-04 2011-10-05 Hitachi Ltd. Seal structure for a steam turbine

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US3527053A (en) * 1968-12-11 1970-09-08 Gen Electric Gas turbine engine with improved gas seal
US3970319A (en) * 1972-11-17 1976-07-20 General Motors Corporation Seal structure
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JPS5920908B2 (en) * 1977-07-21 1984-05-16 住友電気工業株式会社 Labyrinth Spatskin
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US6840519B2 (en) * 2001-10-30 2005-01-11 General Electric Company Actuating mechanism for a turbine and method of retrofitting
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US7066470B2 (en) * 2001-12-05 2006-06-27 General Electric Company Active seal assembly
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US7549834B2 (en) * 2006-06-19 2009-06-23 General Electric Company Actuation pressure control for adjustable seals in turbomachinery
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825364A (en) * 1972-06-09 1974-07-23 Gen Electric Porous abradable turbine shroud
US20070248452A1 (en) * 2006-04-25 2007-10-25 Brisson Bruce W Retractable compliant abradable sealing system and method for rotary machines
EP2372103A1 (en) * 2007-12-04 2011-10-05 Hitachi Ltd. Seal structure for a steam turbine

Also Published As

Publication number Publication date
JP2010261351A (en) 2010-11-18
EP2246524A2 (en) 2010-11-03
US20100278645A1 (en) 2010-11-04
CN101876259A (en) 2010-11-03
JP5411569B2 (en) 2014-02-12

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