EP2348196A3 - Turbine protection device and method for controlling a steam turbine - Google Patents

Turbine protection device and method for controlling a steam turbine Download PDF

Info

Publication number
EP2348196A3
EP2348196A3 EP10173147.9A EP10173147A EP2348196A3 EP 2348196 A3 EP2348196 A3 EP 2348196A3 EP 10173147 A EP10173147 A EP 10173147A EP 2348196 A3 EP2348196 A3 EP 2348196A3
Authority
EP
European Patent Office
Prior art keywords
turbine
deaerator
protection device
steam
controlling
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.)
Granted
Application number
EP10173147.9A
Other languages
German (de)
French (fr)
Other versions
EP2348196A2 (en
EP2348196B1 (en
EP2348196A8 (en
Inventor
Yosuke Hirakawa
Mitsuru Sudo
Ichiro Hiraga
Tsugutomo Teranishi
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 EP2348196A2 publication Critical patent/EP2348196A2/en
Publication of EP2348196A8 publication Critical patent/EP2348196A8/en
Publication of EP2348196A3 publication Critical patent/EP2348196A3/en
Application granted granted Critical
Publication of EP2348196B1 publication Critical patent/EP2348196B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/14—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to other specific conditions
    • 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
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/20—Checking operation of shut-down devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/345—Control or safety-means particular thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/28—Feed-water heaters, i.e. economisers or like preheaters for direct heat transfer, e.g. by mixing water and steam

Abstract

An object of the present invention is to provide a turbine protection device which can interrupt steam flowing backward from a deaerator (5) to a turbine (2) completely even if a check valve (3a) provided between the deaerator (5) and the turbine (2) can not interrupt the steam flowing between the deaerator (5) and the turbine (2) completely. In order to achieve the above object, a control unit (11) sends commands to a shutdown valve device (12) so as to close the shutdown valve device (12) when a differential pressure resulted from subtracting a pressure of a extraction steam from a pressure within the deaerator (5) becomes equal to or greater than a first predetermined value. As a result, the steam flowing backward from the deaerator (5) to the turbine (2) is interrupted by a stop valve of the shutdown valve device (12).
EP10173147.9A 2009-08-18 2010-08-18 Turbine protection device and method for controlling a steam turbine Active EP2348196B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009189423A JP5118672B2 (en) 2009-08-18 2009-08-18 Turbine protection device

Publications (4)

Publication Number Publication Date
EP2348196A2 EP2348196A2 (en) 2011-07-27
EP2348196A8 EP2348196A8 (en) 2011-09-28
EP2348196A3 true EP2348196A3 (en) 2017-06-14
EP2348196B1 EP2348196B1 (en) 2019-10-09

Family

ID=43604183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10173147.9A Active EP2348196B1 (en) 2009-08-18 2010-08-18 Turbine protection device and method for controlling a steam turbine

Country Status (3)

Country Link
US (1) US20110041503A1 (en)
EP (1) EP2348196B1 (en)
JP (1) JP5118672B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103954022A (en) * 2014-04-09 2014-07-30 美的集团股份有限公司 Temperature-detection protective device and air conditioner
CN109488394A (en) * 2018-10-19 2019-03-19 哈尔滨汽轮机厂有限责任公司 The control method that million nuclear steam turbine control system machine heaps are coordinated
CN109091013B (en) * 2018-10-30 2021-03-16 四川爱创科技有限公司 Dry burning prevention method for coffee machine system during starting
JP7093319B2 (en) * 2019-02-21 2022-06-29 三菱重工業株式会社 Operation method of condensate water supply system of thermal power plant and condensate water supply system of thermal power plant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971506C (en) * 1953-11-27 1959-02-05 Brown Switching and control device for steam power plants with intermediate overheating at changeable intermediate pressure
US4819436A (en) * 1988-05-26 1989-04-11 General Electric Company Deaerator pressure control system
JPH08210107A (en) * 1995-02-01 1996-08-20 Fuji Electric Co Ltd Bleed steam turbine plant

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515651A (en) * 1947-10-04 1950-07-18 Reconstruction Finance Corp Steam heating system
US3955358A (en) * 1974-08-08 1976-05-11 Westinghouse Electric Corporation Combined cycle electric power plant and a heat recovery steam generator with improved fluid level control therefor
JPS5124438A (en) * 1974-08-09 1976-02-27 Hitachi Ltd Karyokuburantono kyusokufukaseigensochi
JPS56117004A (en) * 1980-02-20 1981-09-14 Hitachi Ltd Method and device for controlling pressure of deaerator
JPS56132409A (en) * 1980-03-19 1981-10-16 Hitachi Ltd Method of controlling operation pressure of deaerator
JPS61205309A (en) * 1985-03-08 1986-09-11 Hitachi Ltd Protective operating method and its device of feed water heater
JPH11148310A (en) * 1997-11-19 1999-06-02 Toshiba Eng Co Ltd Water induction preventing device for steam turbine plant
US7416294B2 (en) * 2004-02-19 2008-08-26 Fujifilm Corporation Image forming apparatus and liquid control method
JP4158120B2 (en) * 2006-05-18 2008-10-01 株式会社日立製作所 Steam turbine plant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971506C (en) * 1953-11-27 1959-02-05 Brown Switching and control device for steam power plants with intermediate overheating at changeable intermediate pressure
US4819436A (en) * 1988-05-26 1989-04-11 General Electric Company Deaerator pressure control system
JPH08210107A (en) * 1995-02-01 1996-08-20 Fuji Electric Co Ltd Bleed steam turbine plant

Also Published As

Publication number Publication date
US20110041503A1 (en) 2011-02-24
EP2348196A2 (en) 2011-07-27
JP5118672B2 (en) 2013-01-16
JP2011038500A (en) 2011-02-24
EP2348196B1 (en) 2019-10-09
EP2348196A8 (en) 2011-09-28

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