EP3109418A1 - Procédé de refroidissement d'une turbine à vapeur - Google Patents

Procédé de refroidissement d'une turbine à vapeur Download PDF

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Publication number
EP3109418A1
EP3109418A1 EP15173619.6A EP15173619A EP3109418A1 EP 3109418 A1 EP3109418 A1 EP 3109418A1 EP 15173619 A EP15173619 A EP 15173619A EP 3109418 A1 EP3109418 A1 EP 3109418A1
Authority
EP
European Patent Office
Prior art keywords
steam
cooling rate
determined
steam turbine
temperature
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Withdrawn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
EP15173619.6A
Other languages
German (de)
English (en)
Inventor
Jan Greis
Oliver Stawarski
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP15173619.6A priority Critical patent/EP3109418A1/fr
Priority to EP16728922.2A priority patent/EP3280884B1/fr
Priority to KR1020187001780A priority patent/KR102055378B1/ko
Priority to JP2017566722A priority patent/JP2018523048A/ja
Priority to US15/735,472 priority patent/US10422251B2/en
Priority to PCT/EP2016/062963 priority patent/WO2016206972A1/fr
Priority to CN201680036522.4A priority patent/CN107889514B/zh
Publication of EP3109418A1 publication Critical patent/EP3109418A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • F01D21/12—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to temperature
    • 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
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/12—Cooling
    • 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
    • F01K13/003—Arrangements for measuring or testing
    • 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
    • F01K7/16—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 only of turbine type
    • 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

Definitions

  • the invention relates to a method for cooling a steam turbine, wherein the steam turbine is flowed with steam from a steam generator, wherein a predetermined cooling rate ⁇ is determined in front of the steam turbine, wherein the actual cooling rate ⁇ tat determined and compared with the predetermined cooling rate ⁇ before .
  • the "forced cooling” essentially comprises three phases, wherein in the first phase, a steam temperature reduction occurs during power operation and after switching off a natural cooling and then a "cold drawing” with ambient air, whereby the air is drawn through an evacuation device through the steam turbine , The steam turbine is thus cooled in advance by a reduction of the steam temperature during power operation.
  • This reduction of the steam temperature can be achieved by using a boiler spray and / or by reducing the power of the furnace or the gas turbine (in the case of a combined cycle plant).
  • care must be taken that the reduction of the steam temperatures takes place in such a way that the design limits of the steam turbine are not exceeded.
  • the steam temperature can be reduced by means of rigid ramps. The disadvantage here, however, that any given freedoms are not fully exploited. This in turn leads to a loss of time, could be wasted valuable fuel.
  • the object of the invention is therefore to accelerate the method of cooling the steam turbine.
  • a method for cooling a steam turbine wherein the steam turbine is flowed with steam from a steam generator, wherein a predetermined cooling rate of the steam turbine is determined, the actual cooling rate is determined and compared with the predetermined cooling rate and the steam generator is operated in such a way in that the actual cooling rate essentially corresponds to the predetermined cooling rate.
  • an essential feature of the invention is that a control is taken into account, which now controls the steam temperature such that the cooling of the steam turbine takes place within predetermined limits.
  • the predetermined cooling rate is determined by a finite element method, determined by measurements or determined by tests.
  • the temperature of the components, such as the housing and the rotor of the steam turbine is taken into account.
  • the power plant 1 comprises a steam turbine 2, which is divided into a high-pressure turbine section 3, a medium-pressure turbine section 4 and low-pressure turbine section 5. Furthermore, the power plant 1 comprises a steam generator 6 and a condenser 7, which is fluidically connected to the low-pressure turbine part 5. Live steam is generated in the steam generator 6 and flows through a main steam line 8 in the high-pressure turbine section 3 and from there via an outlet 9 to a reheater 10. In the reheater 10, the steam is brought back to a higher temperature and then flows into the medium-pressure turbine section 4. From there, the steam flows via an overflow line 11 to the low-pressure turbine section 5 and finally via an exhaust steam line 12 in the condenser 7. In the condenser 7, the steam condenses to water and is guided by a pump 13 back to the steam generator 6.
  • the steam turbine 1 is supplied with steam from the steam generator 6, whereby a predetermined cooling rate ⁇ is determined in front of the steam turbine 2. Furthermore, the actual cooling rate ⁇ tat is determined and with the given cooling rate T before compared. This is done in an automation system (not shown).
  • the automation system supplies an output signal to the steam generator 6, which results in that the steam generator 6 is operated such that the actual cooling rate ⁇ tat essentially corresponds to the predetermined cooling rate ⁇ before .
  • the design limits are shown, with a default for cooling is calculated and the steam generator 6 is provided as a signal available. This optimum steam temperature optimally exploits the design limits of the steam turbine 2 during cooling. It always checks the actual conditions and compares with the permissible limits.
  • the default cooling rate can be determined by a finite element method or by measurements or tests.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Turbines (AREA)
EP15173619.6A 2015-06-24 2015-06-24 Procédé de refroidissement d'une turbine à vapeur Withdrawn EP3109418A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP15173619.6A EP3109418A1 (fr) 2015-06-24 2015-06-24 Procédé de refroidissement d'une turbine à vapeur
EP16728922.2A EP3280884B1 (fr) 2015-06-24 2016-06-08 Procédé de refroidissement d'une turbine à vapeur
KR1020187001780A KR102055378B1 (ko) 2015-06-24 2016-06-08 증기 터빈을 냉각하는 방법
JP2017566722A JP2018523048A (ja) 2015-06-24 2016-06-08 蒸気タービンを冷却するための方法
US15/735,472 US10422251B2 (en) 2015-06-24 2016-06-08 Method for cooling a steam turbine
PCT/EP2016/062963 WO2016206972A1 (fr) 2015-06-24 2016-06-08 Procédé de refroidissement d'une turbine à vapeur
CN201680036522.4A CN107889514B (zh) 2015-06-24 2016-06-08 用于冷却蒸汽轮机的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15173619.6A EP3109418A1 (fr) 2015-06-24 2015-06-24 Procédé de refroidissement d'une turbine à vapeur

Publications (1)

Publication Number Publication Date
EP3109418A1 true EP3109418A1 (fr) 2016-12-28

Family

ID=53491304

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15173619.6A Withdrawn EP3109418A1 (fr) 2015-06-24 2015-06-24 Procédé de refroidissement d'une turbine à vapeur
EP16728922.2A Active EP3280884B1 (fr) 2015-06-24 2016-06-08 Procédé de refroidissement d'une turbine à vapeur

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP16728922.2A Active EP3280884B1 (fr) 2015-06-24 2016-06-08 Procédé de refroidissement d'une turbine à vapeur

Country Status (6)

Country Link
US (1) US10422251B2 (fr)
EP (2) EP3109418A1 (fr)
JP (1) JP2018523048A (fr)
KR (1) KR102055378B1 (fr)
CN (1) CN107889514B (fr)
WO (1) WO2016206972A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111852592B (zh) * 2020-06-22 2021-11-19 西安交通大学 基于火电中间再热式凝汽机组的无蒸汽运行系统及方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2008202733A1 (en) * 2007-06-20 2009-01-22 Stanwell Corporation Limited Method and apparatus for cooling a steam turbine
EP2620604A1 (fr) * 2012-01-25 2013-07-31 Siemens Aktiengesellschaft Procédé pour contrôler un processus de refroidissement de composants de turbine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588265A (en) * 1968-04-19 1971-06-28 Westinghouse Electric Corp System and method for providing steam turbine operation with improved dynamics
JPS5537762B2 (fr) 1973-06-29 1980-09-30
US4227093A (en) * 1973-08-24 1980-10-07 Westinghouse Electric Corp. Systems and method for organizing computer programs for operating a steam turbine with digital computer control
US4179742A (en) * 1978-04-06 1979-12-18 Westinghouse Electric Corp. System for intelligently selecting the mode of control of a power plant
US4213935A (en) * 1978-06-19 1980-07-22 John Zink Company Apparatus for use in conjunction with boiler flue gases for generating inert blanketing gases
US5433079A (en) * 1994-03-08 1995-07-18 General Electric Company Automated steam turbine startup method and apparatus therefor
US7065471B2 (en) 2001-06-18 2006-06-20 Hitachi, Ltd. Method and system for diagnosing state of gas turbine
US7699907B2 (en) * 2005-08-17 2010-04-20 Air Liquide Process & Construction, Inc. Apparatus and methods for gas separation
JP2007138856A (ja) 2005-11-21 2007-06-07 Chugoku Electric Power Co Inc:The 蒸気タービンプラントの起動スケジュール予測システムおよび予測方法、ならびに予測用プログラムおよび該プログラムを格納した記録媒体
JP4931511B2 (ja) 2006-08-08 2012-05-16 中国電力株式会社 応力緩和を考慮した逆解析による高温部材のクリープ余寿命の評価方法
JP4974944B2 (ja) 2008-03-31 2012-07-11 中国電力株式会社 発電プラントの運転停止システム
RU2563447C2 (ru) * 2010-10-19 2015-09-20 Альстом Текнолоджи Лтд Способ работы электростанции комбинированного цикла с когенерацией и электростанция комбинированного цикла для реализации этого способа
JP6071421B2 (ja) 2012-10-26 2017-02-01 三菱日立パワーシステムズ株式会社 コンバインドサイクルプラント、及びその停止方法、及びその制御装置
US9200799B2 (en) * 2013-01-07 2015-12-01 Glasspoint Solar, Inc. Systems and methods for selectively producing steam from solar collectors and heaters for processes including enhanced oil recovery

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2008202733A1 (en) * 2007-06-20 2009-01-22 Stanwell Corporation Limited Method and apparatus for cooling a steam turbine
EP2620604A1 (fr) * 2012-01-25 2013-07-31 Siemens Aktiengesellschaft Procédé pour contrôler un processus de refroidissement de composants de turbine

Also Published As

Publication number Publication date
WO2016206972A1 (fr) 2016-12-29
KR20180019210A (ko) 2018-02-23
JP2018523048A (ja) 2018-08-16
CN107889514B (zh) 2020-02-21
US10422251B2 (en) 2019-09-24
EP3280884A1 (fr) 2018-02-14
KR102055378B1 (ko) 2019-12-12
CN107889514A (zh) 2018-04-06
EP3280884B1 (fr) 2021-07-28
US20180163572A1 (en) 2018-06-14

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