EP2299068A1 - Kraftwerksanlage mit Überlast-Regelventil - Google Patents

Kraftwerksanlage mit Überlast-Regelventil Download PDF

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Publication number
EP2299068A1
EP2299068A1 EP09012048A EP09012048A EP2299068A1 EP 2299068 A1 EP2299068 A1 EP 2299068A1 EP 09012048 A EP09012048 A EP 09012048A EP 09012048 A EP09012048 A EP 09012048A EP 2299068 A1 EP2299068 A1 EP 2299068A1
Authority
EP
European Patent Office
Prior art keywords
steam
overload
control valve
line
pressure
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Withdrawn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
EP09012048A
Other languages
German (de)
English (en)
French (fr)
Inventor
Martin Bennauer
Edwin Gobrecht
Karsten Peters
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42753010&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2299068(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP09012048A priority Critical patent/EP2299068A1/de
Priority to US13/496,020 priority patent/US20120174584A1/en
Priority to JP2012526087A priority patent/JP5539521B2/ja
Priority to PCT/EP2010/063846 priority patent/WO2011036136A1/de
Priority to RU2012116067/06A priority patent/RU2508454C2/ru
Priority to EP10760971.1A priority patent/EP2480762B1/de
Priority to PL10760971T priority patent/PL2480762T3/pl
Priority to CN201080042337.9A priority patent/CN102575530B/zh
Priority to KR1020127010440A priority patent/KR101445179B1/ko
Publication of EP2299068A1 publication Critical patent/EP2299068A1/de
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F01K7/16—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
    • F01K7/18—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 turbine being of multiple-inlet-pressure type
    • F01K7/20—Control means specially adapted therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making

Definitions

  • the invention relates to a power plant with a steam generator and a steam turbine according to the preamble of claim 1 and a method for operating a power plant according to the preamble of claim 5.
  • Power plants usually include a steam generator and a steam turbine, which are designed such that the internal energy of a water vapor is converted into mechanical rotational energy.
  • the generators driven by such steam turbines are usually operated at 50 Hz for the European market and 60 Hz for the US market.
  • Modern steam turbines are exposed to a water vapor, which may have a pressure of up to 350 bar and a temperature of up to 700 ° C.
  • This steam needed in the steam turbine is generated in the steam generator, which presents a challenge to the materials and components of the steam generator.
  • Particularly important components are power control, pressure control and speed control. In order to be able to operate the required 50 Hz or 60 Hz constant over a longer required period of time, high demands are placed on the controls.
  • Power plants are usually required for base load operation, which means that the entire system is constantly stressed over a longer period of time.
  • the frequency of the steam turbine shaft and the amount of steam leading to the steam turbine is substantially constant.
  • the generator applied torque transmission changes, which means that the performance of the steam turbine could suddenly change, which should be prevented by the scheme.
  • a sudden change in the power of the steam turbine is also given by a possible fault.
  • a power plant is operated in the fixed pressure, sliding pressure or power mode.
  • the steam turbine has to transmit a lower torque to the generator. This could be accomplished by closing the valves arranged for delivery to the steam turbine or by providing the steam generator with a lower amount of steam at a lower pressure.
  • the pressure controls are designed such that a live steam pressure is brought in a high-pressure steam system during startup of the steam turbine to a fixed pressure value.
  • a diversion line is arranged such that the high-pressure steam inlet of the steam turbine is fluidly connected to the high-pressure steam outlet of the steam turbine.
  • the invention begins, whose task is to further develop a power plant such that a power loss is further reduced.
  • the invention proposes to arrange an overload line, which forms a fluidic connection between the steam generator and an overload stage of the steam turbine, and to arrange a arranged in the overload line overload control valve that is controlled by a pressure regulator.
  • the advantage of the invention is u.a.
  • the overload line acts as a sort of diverter station, thereby directing the steam into the steam turbine rather than uselessly bypassing the steam turbine.
  • the steam turbine is designed such that the overload stage, which is fluidically connected to the overload line, is designed such that the inflowing steam is converted work-giving.
  • the overload stage which is fluidically connected to the overload line
  • the inflowing steam is converted work-giving.
  • An essential feature of the method according to the invention is that the pressure regulator, which controls the overload control valve, is designed such that a desired value can be set and the bypass control valve only opens when the desired value is exceeded, when the overload control valve is already open is.
  • the overload control valve opens at partial load and / or full load.
  • the power plant can be operated more flexible overall, since both the power regulator and in the pre-pressure operation, the overload control valve can be controlled at each power. Another advantage is that the start-up and power losses are lower because the overload control valve directs the steam into the steam turbine rather than uselessly past the steam turbine into the condenser.
  • the power plant 1 comprises a steam turbine 2, which comprises a high-pressure turbine section 2a, a medium-pressure turbine section 2b and a low-pressure turbine section 2c. Via a steam generator 3, live steam passes via a live steam line 4 via a live steam control valve 5 into a high pressure steam inlet 6 of the high pressure turbine part 2a.
  • the power plant 1 comprises a bypass line 7, the main steam line 4 with a high-pressure steam outlet 8 of the high-pressure turbine section 2a fluidly connects. In the bypass 7, a bypass control valve 9 is arranged.
  • the power plant 1 comprises an overload line 10, which connects the steam generator 3 with an overload stage 11 of the high-pressure turbine part 2a fluidly.
  • an overload control valve 12 is arranged in the overload line 10.
  • the overload control valve 12 and the bypass control valve 9 are closed, the live steam control valve 5 is open and is controlled by a pressure regulator or power controller, not shown.
  • the effluent from the high-pressure turbine section 2a steam is referred to as a cold reheater steam and reheated in a reheater 13.
  • the effluent from the reheater 13 steam is referred to as hot superheated steam 14.
  • This hot superheated steam 14 flows through a medium-pressure control valve 15 in the medium-pressure turbine section 2b and is converted there relaxes work.
  • the steam flowing out of the medium-pressure turbine section 2b is fluidically connected via medium-pressure discharge lines 16 to the low-pressure steam inlet 17 of the low-pressure turbine section 2c.
  • the effluent from the low-pressure turbine section 2c steam is passed through a low-pressure discharge line 18 to a condenser 19, where it is converted to water and finally fed via a feedwater pump 20 to the steam generator 3, whereby a steam cycle is closed.
  • the vapor converted from thermal energy to rotational energy drives a shaft 21, which in turn drives a generator 22 which eventually provides electrical energy.
  • the main steam control valve 5, the overload control valve 12 and the bypass control valve 9 are also each arranged on its own separate pressure regulator.
  • the responsible for the overload control valve 12 pressure regulator is such designed that a setpoint is adjustable and the overload control valve 12 opens when exceeding this setpoint before the bypass control valve 9 opens.
  • the overload control valve 12 is usually opened at full load.
  • the steam flowing in via the overload stage 11 is converted into a work-giving function, instead of being uselessly guided past the high-pressure turbine section 2 a via the bypass line 7.
  • the efficiency of the power plant is further increased thereby.
  • a new pressure characteristic for the overload control valve 12 is set between a sliding pressure characteristic of the high-pressure turbine section 2a and the high-pressure bypass characteristic curve.
  • the overload control valve 12 opens and not the bypass control valve 9.
  • the overload control valve 12 then regulates a predetermined by the new pressure characteristic pressure.
  • the live steam is used via the overload control valve 12 in the high-pressure turbine section 2a and not useless passed to the steam turbine 2 in the condenser 19.
  • FIG. 2 shows pressure curves as a function of the steam mass flow.
  • the live steam pressure 26 is plotted on the Y axis and the steam generator mass flow 25 is plotted on the X axis.
  • the sliding pressure characteristic 27 represents the usual course of operation. When the turbine valves are fully opened, the steam mass flow rates are fully absorbed by the turbine at the rated pressure.
  • the nominal value characteristic curve 28 of the bypass station runs at a pressure difference ⁇ P above the sliding pressure characteristic curve 27. This has the consequence that the bypass station is not opened too early. Only when the operating pressure has increased by the pressure difference, the bypass valves are opened.
  • an additional characteristic 29 for the overload valve control is included between the sliding pressure characteristic curve 27 and the nominal value characteristic curve 28.
  • the additional characteristic curve 29 is above the sliding pressure characteristic curve 27 and below the nominal value characteristic curve 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
EP09012048A 2009-09-22 2009-09-22 Kraftwerksanlage mit Überlast-Regelventil Withdrawn EP2299068A1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP09012048A EP2299068A1 (de) 2009-09-22 2009-09-22 Kraftwerksanlage mit Überlast-Regelventil
US13/496,020 US20120174584A1 (en) 2009-09-22 2010-09-09 Power plant system having overload control valve
KR1020127010440A KR101445179B1 (ko) 2009-09-22 2010-09-21 과부하 제어 밸브를 가지고 있는 발전소 시스템
RU2012116067/06A RU2508454C2 (ru) 2009-09-22 2010-09-21 Энергоустановка с перегрузочным регулирующим клапаном
PCT/EP2010/063846 WO2011036136A1 (de) 2009-09-22 2010-09-21 Kraftwerksanlage mit überlast-regelventil
JP2012526087A JP5539521B2 (ja) 2009-09-22 2010-09-21 オーバーロード制御バルブを有する発電プラントシステム
EP10760971.1A EP2480762B1 (de) 2009-09-22 2010-09-21 Kraftwerksanlage mit Überlast-Regelventil
PL10760971T PL2480762T3 (pl) 2009-09-22 2010-09-21 Instalacja elektrowni z przeciążeniowym zaworem regulacyjnym
CN201080042337.9A CN102575530B (zh) 2009-09-22 2010-09-21 具有过载控制阀的发电厂系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09012048A EP2299068A1 (de) 2009-09-22 2009-09-22 Kraftwerksanlage mit Überlast-Regelventil

Publications (1)

Publication Number Publication Date
EP2299068A1 true EP2299068A1 (de) 2011-03-23

Family

ID=42753010

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09012048A Withdrawn EP2299068A1 (de) 2009-09-22 2009-09-22 Kraftwerksanlage mit Überlast-Regelventil
EP10760971.1A Active EP2480762B1 (de) 2009-09-22 2010-09-21 Kraftwerksanlage mit Überlast-Regelventil

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10760971.1A Active EP2480762B1 (de) 2009-09-22 2010-09-21 Kraftwerksanlage mit Überlast-Regelventil

Country Status (8)

Country Link
US (1) US20120174584A1 (zh)
EP (2) EP2299068A1 (zh)
JP (1) JP5539521B2 (zh)
KR (1) KR101445179B1 (zh)
CN (1) CN102575530B (zh)
PL (1) PL2480762T3 (zh)
RU (1) RU2508454C2 (zh)
WO (1) WO2011036136A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013194720A (ja) * 2012-03-23 2013-09-30 Hitachi Ltd 蒸気タービン設備
CN103649474A (zh) * 2011-07-14 2014-03-19 西门子公司 蒸汽轮机设备和用于运行蒸汽轮机设备的方法
WO2015024886A1 (de) * 2013-08-22 2015-02-26 Siemens Aktiengesellschaft Dampfkraftwerk und verfahren zum betrieb eines dampfkraftwerks
EP2813674A4 (en) * 2012-01-17 2015-12-09 Toshiba Kk STEAM CONTROL DEVICE
EP3128136A1 (de) * 2015-08-07 2017-02-08 Siemens Aktiengesellschaft Überlasteinleitung in eine dampfturbine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5596631B2 (ja) * 2011-06-30 2014-09-24 株式会社神戸製鋼所 バイナリ発電装置
EP2685055A1 (de) * 2012-07-12 2014-01-15 Siemens Aktiengesellschaft Verfahren zur Stützung einer Netzfrequenz
JP6203600B2 (ja) * 2013-10-23 2017-09-27 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
CN104076801B (zh) * 2014-07-10 2017-02-15 大唐阳城发电有限责任公司 一种超高压远距离输电线路故障自动甩负荷系统及方法
CN105443166A (zh) * 2015-06-15 2016-03-30 江曼 一种发电站内的发电系统
CN105134313B (zh) * 2015-08-14 2016-09-14 江苏永钢集团有限公司 汽轮机上抽汽阀的控制装置
US10871072B2 (en) * 2017-05-01 2020-12-22 General Electric Company Systems and methods for dynamic balancing of steam turbine rotor thrust
IT201800006187A1 (it) * 2018-06-11 2019-12-11 System for recovering waste heat and method thereof/sistema per recuperare calore residuo e relativo metodo
JP7137398B2 (ja) * 2018-08-08 2022-09-14 川崎重工業株式会社 コンバインドサイクル発電プラント

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CH405359A (de) * 1963-12-13 1966-01-15 Bbc Brown Boveri & Cie Einrichtung zur Verhinderung des Druckanstieges im Zwischenüberhitzer einer Dampfturbinenanlage
DE1551235A1 (de) * 1967-01-27 1970-04-02 Bbc Brown Boveri & Cie Verfahren und Einrichtung zur Deckung von Spitzenlast oder einer raschen Lastaenderung in einer Dampfturbinenanlage
DE2655796A1 (de) * 1975-12-19 1977-06-23 Bbc Brown Boveri & Cie Regelsystem fuer eine dampfturbinenanlage
DE10042317A1 (de) * 2000-08-29 2002-03-14 Alstom Power Nv Dampfturbine und Verfahren zur Einleitung von Beipassdampf

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Publication number Priority date Publication date Assignee Title
CH405359A (de) * 1963-12-13 1966-01-15 Bbc Brown Boveri & Cie Einrichtung zur Verhinderung des Druckanstieges im Zwischenüberhitzer einer Dampfturbinenanlage
DE1551235A1 (de) * 1967-01-27 1970-04-02 Bbc Brown Boveri & Cie Verfahren und Einrichtung zur Deckung von Spitzenlast oder einer raschen Lastaenderung in einer Dampfturbinenanlage
DE2655796A1 (de) * 1975-12-19 1977-06-23 Bbc Brown Boveri & Cie Regelsystem fuer eine dampfturbinenanlage
DE10042317A1 (de) * 2000-08-29 2002-03-14 Alstom Power Nv Dampfturbine und Verfahren zur Einleitung von Beipassdampf

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103649474A (zh) * 2011-07-14 2014-03-19 西门子公司 蒸汽轮机设备和用于运行蒸汽轮机设备的方法
CN103649474B (zh) * 2011-07-14 2015-12-23 西门子公司 蒸汽轮机设备和用于运行蒸汽轮机设备的方法
US9322298B2 (en) 2011-07-14 2016-04-26 Siemens Aktiengesellschaft Steam turbine installation and method for operating the steam turbine installation
EP2813674A4 (en) * 2012-01-17 2015-12-09 Toshiba Kk STEAM CONTROL DEVICE
US9567868B2 (en) 2012-01-17 2017-02-14 Kabushiki Kaisha Toshiba Steam turbine control device
JP2013194720A (ja) * 2012-03-23 2013-09-30 Hitachi Ltd 蒸気タービン設備
WO2015024886A1 (de) * 2013-08-22 2015-02-26 Siemens Aktiengesellschaft Dampfkraftwerk und verfahren zum betrieb eines dampfkraftwerks
EP3128136A1 (de) * 2015-08-07 2017-02-08 Siemens Aktiengesellschaft Überlasteinleitung in eine dampfturbine
WO2017025242A1 (de) * 2015-08-07 2017-02-16 Siemens Aktiengesellschaft Überlasteinleitung in eine dampfturbine
CN107849944A (zh) * 2015-08-07 2018-03-27 西门子公司 到蒸汽轮机中的过载导入
RU2672221C1 (ru) * 2015-08-07 2018-11-12 Сименс Акциенгезелльшафт Ввод перегрузки в паровую турбину
US10301975B2 (en) 2015-08-07 2019-05-28 Siemens Aktiengesellschaft Overload introduction into a steam turbine

Also Published As

Publication number Publication date
US20120174584A1 (en) 2012-07-12
EP2480762B1 (de) 2014-08-13
WO2011036136A1 (de) 2011-03-31
PL2480762T3 (pl) 2015-02-27
EP2480762A1 (de) 2012-08-01
RU2508454C2 (ru) 2014-02-27
JP5539521B2 (ja) 2014-07-02
CN102575530A (zh) 2012-07-11
CN102575530B (zh) 2014-11-12
KR20120068946A (ko) 2012-06-27
KR101445179B1 (ko) 2014-09-29
JP2013502538A (ja) 2013-01-24
RU2012116067A (ru) 2013-10-27

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