EP2631436A3 - Steam turbine - Google Patents

Steam turbine Download PDF

Info

Publication number
EP2631436A3
EP2631436A3 EP13156130.0A EP13156130A EP2631436A3 EP 2631436 A3 EP2631436 A3 EP 2631436A3 EP 13156130 A EP13156130 A EP 13156130A EP 2631436 A3 EP2631436 A3 EP 2631436A3
Authority
EP
European Patent Office
Prior art keywords
outer casing
side outer
half side
turbine
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Withdrawn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
EP13156130.0A
Other languages
German (de)
French (fr)
Other versions
EP2631436A2 (en
Inventor
Hiroshi Saeki
Tatsuro Uchida
Naoki Shibukawa
Kenichi Imai
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 EP2631436A2 publication Critical patent/EP2631436A2/en
Publication of EP2631436A3 publication Critical patent/EP2631436A3/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Withdrawn legal-status Critical Current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
    • F01D1/04—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 traversed by the working-fluid substantially axially
    • 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
    • F01D25/30—Exhaust heads, chambers, or the like
    • 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
    • F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
    • F01D3/02—Machines or engines with axial-thrust balancing effected by working-fluid characterised by having one fluid flow in one axial direction and another fluid flow in the opposite direction
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

A steam turbine 10 in an embodiment includes: an inner casing 21 surrounding a turbine rotor; an outer casing 20 composed of an upper half side outer casing 20a and a lower half side outer casing 20b; and an annular diffuser 50 through which steam passed through a turbine stage is discharged radially outward. A vertical distance H from a axis of a turbine rotor 23 to an inner wall of the upper half side outer casing 20a, an outermost diameter D of final stage rotor blades 22a, a blade height B of the fmal stage rotor blade 22a, and a distance W between inner walls in vertical and horizontal directions to the axis of the turbine rotor 23, at a bottom portion of the lower half side outer casing 20b forming a discharge port 60, satisfy (H - D/2)/B≤1.7 and (W - D)/2B≥2.
EP13156130.0A 2012-02-24 2013-02-21 Steam turbine Withdrawn EP2631436A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012038725A JP5606473B2 (en) 2012-02-24 2012-02-24 Steam turbine

Publications (2)

Publication Number Publication Date
EP2631436A2 EP2631436A2 (en) 2013-08-28
EP2631436A3 true EP2631436A3 (en) 2017-12-13

Family

ID=47779857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13156130.0A Withdrawn EP2631436A3 (en) 2012-02-24 2013-02-21 Steam turbine

Country Status (3)

Country Link
US (1) US20130224006A1 (en)
EP (1) EP2631436A3 (en)
JP (1) JP5606473B2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130243564A1 (en) * 2012-03-14 2013-09-19 Prakash Bavanjibhai Dalsania Exhaust diffuser for turbine
CN104213949B (en) * 2014-08-15 2016-08-17 中国航空工业集团公司沈阳发动机设计研究所 A kind of combustion turbine exhaustion spiral case diffusion runner
EP3054086B1 (en) * 2015-02-05 2017-09-13 General Electric Technology GmbH Steam turbine diffuser configuration
EP3265653B1 (en) * 2015-03-05 2019-05-15 Turboden S.p.A. Turbine for organic rankine cycles with axial input and output
EP3299592B1 (en) * 2016-09-21 2020-03-18 Doosan Skoda Power S.r.o. Exhaust casing for a low pressure steam turbine system
RU2632354C1 (en) * 2016-12-01 2017-10-04 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Steam turbine double-flow low-pressure cylinder
JP6847673B2 (en) * 2017-01-17 2021-03-24 株式会社東芝 Turbine exhaust chamber
JP6731359B2 (en) * 2017-02-14 2020-07-29 三菱日立パワーシステムズ株式会社 Exhaust casing and steam turbine including the same
JP7093238B2 (en) * 2018-06-18 2022-06-29 三菱重工業株式会社 Steam turbine equipment and combined cycle plant
JP7278903B2 (en) * 2019-08-09 2023-05-22 株式会社東芝 turbine exhaust chamber
JP7433166B2 (en) * 2020-08-17 2024-02-19 三菱重工業株式会社 Steam turbine exhaust chamber and steam turbine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU916770A1 (en) * 1980-05-23 1982-03-30 Gudkov Eduard Exhaust pipe of steam turbine low-pressure end
US5518366A (en) * 1994-06-13 1996-05-21 Westinghouse Electric Corporation Exhaust system for a turbomachine
JP2006329148A (en) * 2005-05-30 2006-12-07 Hitachi Ltd Turbine exhauster

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1812487A1 (en) * 1968-12-03 1970-08-13 Siemens Ag Housing arrangement for low pressure parts of steam turbines in fully welded multi-shell construction
JPS5520607U (en) * 1978-07-26 1980-02-08
US6261055B1 (en) * 1999-08-03 2001-07-17 Jerzy A. Owczarek Exhaust flow diffuser for a steam turbine
JP3679960B2 (en) * 2000-01-18 2005-08-03 三菱重工業株式会社 Low pressure steam turbine casing structure
US6419448B1 (en) * 2000-03-20 2002-07-16 Jerzy A. Owczarek Flow by-pass system for use in steam turbine exhaust hoods
JP3831617B2 (en) * 2001-02-06 2006-10-11 三菱重工業株式会社 Steam turbine casing structure
JP2005233154A (en) * 2004-02-23 2005-09-02 Toshiba Corp Steam turbine
JP4619849B2 (en) * 2005-03-31 2011-01-26 株式会社日立製作所 Turbine exhaust system
JP4541950B2 (en) * 2005-03-31 2010-09-08 株式会社日立製作所 Turbine exhaust system and method for modifying the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU916770A1 (en) * 1980-05-23 1982-03-30 Gudkov Eduard Exhaust pipe of steam turbine low-pressure end
US5518366A (en) * 1994-06-13 1996-05-21 Westinghouse Electric Corporation Exhaust system for a turbomachine
JP2006329148A (en) * 2005-05-30 2006-12-07 Hitachi Ltd Turbine exhauster

Also Published As

Publication number Publication date
JP2013174160A (en) 2013-09-05
US20130224006A1 (en) 2013-08-29
EP2631436A2 (en) 2013-08-28
JP5606473B2 (en) 2014-10-15

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