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WO2013000720A3 - Additional controlled extraction for a preheater for improving the plant dynamics and the frequency regulation in a steam power plant - Google Patents

Additional controlled extraction for a preheater for improving the plant dynamics and the frequency regulation in a steam power plant Download PDF

Info

Publication number
WO2013000720A3
WO2013000720A3 PCT/EP2012/061278 EP2012061278W WO2013000720A3 WO 2013000720 A3 WO2013000720 A3 WO 2013000720A3 EP 2012061278 W EP2012061278 W EP 2012061278W WO 2013000720 A3 WO2013000720 A3 WO 2013000720A3
Authority
WO
WIPO (PCT)
Prior art keywords
steam
power plant
preheater
energetic
steam power
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.)
Ceased
Application number
PCT/EP2012/061278
Other languages
German (de)
French (fr)
Other versions
WO2013000720A2 (en
Inventor
Wolfgang WIESENMÜLLER
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
Siemens Corp
Original Assignee
Siemens AG
Siemens 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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to CN201280031673.2A priority Critical patent/CN103717846B/en
Priority to RU2014102615/06A priority patent/RU2014102615A/en
Priority to EP12729098.9A priority patent/EP2712393A2/en
Publication of WO2013000720A2 publication Critical patent/WO2013000720A2/en
Publication of WO2013000720A3 publication Critical patent/WO2013000720A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant
    • 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
    • F01K7/22—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 the turbines having inter-stage steam 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
    • F01K7/40—Use of two or more feed-water heaters in series

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The invention relates to an extraction method for a preheater of a steam power plant and to a water-steam circuit in a steam power plant. According to the invention, a higher-energetic steam is tapped on a turbine of the steam power plant and is admixed to a lower-energetic steam which is tapped on the turbine. The steam mixture of the lower-energetic steam and the admixed higher-energetic steam is fed to a preheater, in particular a high-pressure preheater, especially a last high-pressure preheating stage of the high-pressure preheater of the steam power plant, particularly for heating feed water flowing through the preheater. By an in particular regulated and/or controlled admixing of the higher-energetic steam to the lower-energetic steam (controlled extraction), a fast power change can be achieved in the steam power plant, particularly in part-load operation of the steam power plant, by changing the temperature of the lower-energetic steam.
PCT/EP2012/061278 2011-06-28 2012-06-14 Additional controlled extraction for a preheater for improving the plant dynamics and the frequency regulation in a steam power plant Ceased WO2013000720A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201280031673.2A CN103717846B (en) 2011-06-28 2012-06-14 The additional control for preheater for improvement of the equipment dynamic performance in steam power station and FREQUENCY CONTROL is drawn gas
RU2014102615/06A RU2014102615A (en) 2011-06-28 2012-06-14 ADDITIONAL ADJUSTABLE STEAM SELECTION FOR A HEATER IN ORDER TO IMPROVE THE EQUIPMENT DYNAMICS AND FREQUENCY REGULATION AT A POWER STATION
EP12729098.9A EP2712393A2 (en) 2011-06-28 2012-06-14 Additional controlled extraction for a preheater for improving the plant dynamics and the frequency regulation in a steam power plant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011078193.5 2011-06-28
DE201110078193 DE102011078193A1 (en) 2011-06-28 2011-06-28 Additional control tap for a preheater to improve the system dynamics and frequency control in a steam power plant

Publications (2)

Publication Number Publication Date
WO2013000720A2 WO2013000720A2 (en) 2013-01-03
WO2013000720A3 true WO2013000720A3 (en) 2013-12-19

Family

ID=46331293

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/061278 Ceased WO2013000720A2 (en) 2011-06-28 2012-06-14 Additional controlled extraction for a preheater for improving the plant dynamics and the frequency regulation in a steam power plant

Country Status (5)

Country Link
EP (1) EP2712393A2 (en)
CN (1) CN103717846B (en)
DE (1) DE102011078193A1 (en)
RU (1) RU2014102615A (en)
WO (1) WO2013000720A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2876266A1 (en) * 2013-11-21 2015-05-27 Siemens Aktiengesellschaft Arrangement for removal of steam from a steam turbine
DE102018100712A1 (en) 2018-01-15 2019-07-18 Deutsches Zentrum für Luft- und Raumfahrt e.V. Steam power plant and method for operating a steam power plant
CN112805454A (en) * 2018-09-27 2021-05-14 西门子能源环球有限责任两合公司 Fluid mechanical device and method for operating a fluid mechanical device
CN109653819B (en) * 2019-01-24 2023-10-24 中国电力工程顾问集团东北电力设计院有限公司 Deep peak-shaving steam turbine system of cogeneration unit and control method
CN110645062A (en) * 2019-10-31 2020-01-03 大唐郓城发电有限公司 Double-machine regenerative system participating in primary frequency modulation and operation method thereof
CN115218245B (en) * 2022-07-21 2023-07-28 西安热工研究院有限公司 A control method and system for improving unit flexibility through heat extraction and throttling

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238729A (en) * 1962-07-23 1966-03-08 Ass Elect Ind Steam turbine power plants
DE3616797A1 (en) * 1986-05-17 1987-11-19 Koerting Ag Steam turbine system
US5404724A (en) * 1994-04-07 1995-04-11 Westinghouse Electric Corporation Boiler feedpump turbine drive/feedwater train arrangement
DE19535318A1 (en) * 1995-09-22 1997-03-27 Steag Ag Method and arrangement for preheating the feed water of a steam generator in power plant processes
EP0773348A1 (en) * 1995-11-08 1997-05-14 Steag Ag Process and apparatus for heating the main condensate in a power plant
US20110220744A1 (en) * 2010-03-09 2011-09-15 Xu Zhao Process for reducing coal consumption in coal fired power plant with fluidized-bed drying

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE563973C (en) * 1931-03-15 1932-11-11 Aeg Steam power plant with several auxiliary machines driven by live steam
JP3847962B2 (en) * 1997-07-30 2006-11-22 株式会社東芝 Power plant heating water heating system
CN100354504C (en) * 2005-12-28 2007-12-12 上海电力学院 Multi-grade using backheating drain residual heat generator of thermal power generator set
CN101650022B (en) * 2009-08-21 2011-09-21 上海电力学院 A cross-stage connection system for steam turbine interstage regenerative heaters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238729A (en) * 1962-07-23 1966-03-08 Ass Elect Ind Steam turbine power plants
DE3616797A1 (en) * 1986-05-17 1987-11-19 Koerting Ag Steam turbine system
US5404724A (en) * 1994-04-07 1995-04-11 Westinghouse Electric Corporation Boiler feedpump turbine drive/feedwater train arrangement
DE19535318A1 (en) * 1995-09-22 1997-03-27 Steag Ag Method and arrangement for preheating the feed water of a steam generator in power plant processes
EP0773348A1 (en) * 1995-11-08 1997-05-14 Steag Ag Process and apparatus for heating the main condensate in a power plant
US20110220744A1 (en) * 2010-03-09 2011-09-15 Xu Zhao Process for reducing coal consumption in coal fired power plant with fluidized-bed drying

Also Published As

Publication number Publication date
CN103717846B (en) 2015-11-25
WO2013000720A2 (en) 2013-01-03
EP2712393A2 (en) 2014-04-02
CN103717846A (en) 2014-04-09
RU2014102615A (en) 2015-08-10
DE102011078193A1 (en) 2013-01-03

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