EP2480762A1 - Kraftwerksanlage mit überlast-regelventil - Google Patents
Kraftwerksanlage mit überlast-regelventilInfo
- Publication number
- EP2480762A1 EP2480762A1 EP10760971A EP10760971A EP2480762A1 EP 2480762 A1 EP2480762 A1 EP 2480762A1 EP 10760971 A EP10760971 A EP 10760971A EP 10760971 A EP10760971 A EP 10760971A EP 2480762 A1 EP2480762 A1 EP 2480762A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- overload
- control valve
- pressure
- line
- 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
Links
- 238000000034 method Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000010678 Paulownia tomentosa Nutrition 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type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 Rotati ⁇ onsenergy.
- 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 required in the steam turbine steam is he witnesses ⁇ in the steam generator, this being a challenge to the materials and components of the steam generator.
- Particularly important components are power control, pressure control and speed control.
- Power plants are usually required for the base load operation, which results in that the ge ⁇ entire system is blownt constant loading over a longer period of time. In a continuous operation the frequency is the
- the steam turbine In the event that the load in the consumer network is suddenly reduced, the steam turbine must 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 fluidically 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 fact that now with pressure control and full load, the excess steam no longer needs to be passed over a diverting at the steam turbine, but is guided via the overload line in the steam turbine, but to an overload level. After the overload stage, this steam is introduced
- 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.
- an optimal utilization of the thermal energy of the steam is utilized, thereby increasing the efficiency of the power plant.
- the task directed towards the method is achieved according to claim 5.
- An essential feature of the erfindungsge ⁇ MAESSEN method is that the pressure regulator that controls the overload control valve is designed such that a desired value can be set and the bypass control valve when exceeding this setpoint opens only when the overload control valve already open.
- the overload control valve opens at partial load and / or full load.
- the power plant according to the invention or the inventions ⁇ inventive method for operating the power plant can be operated more flexible overall, since both the power regulator and in the form of admission pressure overload control valve can be controlled at each power.
- a further advantage is that the starting and Leis ⁇ tung losses are lower because the overload control valve directs the steam into the steam turbine, useless instead of the steam turbine inside the capacitor.
- FIG. 1 shows a schematic diagram of a power plant
- the power plant 1 comprises a steam turbine 2, which summarizes 2c, a high-pressure turbine section 2a, an intermediate ⁇ pressure turbine 2b and a low pressure turbine section to ⁇ .
- 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 diversion line 7, which the Frischdampflei ⁇ tion 4 with a high-pressure steam outlet 8 of the high-pressure part Turbine 2a fluidly connects.
- a bypass control valve 9 is arranged 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 section 2a in terms of flow.
- an overload control valve 12 is arranged ⁇ .
- the overload control valve 12 and the bypass control valve 9 are closed, wherein the live steam control valve 5 is opened and not shown in detail
- 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 reheated steam 14 flows via a medium-pressure control valve 15 into the medium-pressure turbine section 2b, where it is converted to work-relieving.
- Selected from the medium-pressure turbine section 2b flowing out ⁇ steam is fluidly connected via medium pressure delivery ducts 16 with the low pressure steam inlet 17 of the low pressure turbine section 2c.
- the effluent from the low-pressure turbine part 2c steam is passed through a Nie ⁇ derdruck-Ausströmtechnisch 18 to a condenser 19, where it is converted to water and finally fed via a feed ⁇ water pump 20 to the steam generator 3, whereby a water vapor circuit 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 Uberlast-control valve 12 öff ⁇ net before exceeding this setpoint before the bypass control valve 9 opens.
- the overload-Re ⁇ gelventil 12 is here usually open at full load.
- the 2 shows pressure curves as a function of Dampfmas ⁇ senstrom.
- 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 ⁇ 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 is increased by the Druckdiffe ⁇ ence, the diverter 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.
- Characteristic 29 is above the sliding pressure characteristic 27 and below the setpoint 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)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09012048A EP2299068A1 (de) | 2009-09-22 | 2009-09-22 | Kraftwerksanlage mit Überlast-Regelventil |
PCT/EP2010/063846 WO2011036136A1 (de) | 2009-09-22 | 2010-09-21 | Kraftwerksanlage mit überlast-regelventil |
EP10760971.1A EP2480762B1 (de) | 2009-09-22 | 2010-09-21 | Kraftwerksanlage mit Überlast-Regelventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2480762A1 true EP2480762A1 (de) | 2012-08-01 |
EP2480762B1 EP2480762B1 (de) | 2014-08-13 |
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 Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09012048A Withdrawn EP2299068A1 (de) | 2009-09-22 | 2009-09-22 | Kraftwerksanlage mit Überlast-Regelventil |
Country Status (8)
Country | Link |
---|---|
US (1) | US20120174584A1 (de) |
EP (2) | EP2299068A1 (de) |
JP (1) | JP5539521B2 (de) |
KR (1) | KR101445179B1 (de) |
CN (1) | CN102575530B (de) |
PL (1) | PL2480762T3 (de) |
RU (1) | RU2508454C2 (de) |
WO (1) | WO2011036136A1 (de) |
Families Citing this family (14)
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 |
EP2546476A1 (de) * | 2011-07-14 | 2013-01-16 | Siemens Aktiengesellschaft | Dampfturbinenanlage und Verfahren zum Betreiben der Dampfturbinenanlage |
JP5823302B2 (ja) * | 2012-01-17 | 2015-11-25 | 株式会社東芝 | 蒸気タービン制御装置 |
JP5738227B2 (ja) * | 2012-03-23 | 2015-06-17 | 三菱日立パワーシステムズ株式会社 | 蒸気タービン設備 |
EP2685055A1 (de) * | 2012-07-12 | 2014-01-15 | Siemens Aktiengesellschaft | Verfahren zur Stützung einer Netzfrequenz |
WO2015024886A1 (de) * | 2013-08-22 | 2015-02-26 | Siemens Aktiengesellschaft | Dampfkraftwerk und verfahren zum betrieb eines dampfkraftwerks |
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***及方法 |
CN104989463A (zh) * | 2015-06-15 | 2015-10-21 | 江曼 | 一种发电站内的发电*** |
EP3128136A1 (de) * | 2015-08-07 | 2017-02-08 | Siemens Aktiengesellschaft | Überlasteinleitung in eine dampfturbine |
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 |
Family Cites Families (14)
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 |
CH449792A (de) * | 1967-01-05 | 1968-01-15 | Bbc Brown Boveri & Cie | Verfahren und Einrichtung zur Deckung von Spitzenlast oder einer raschen Laständerung in einer Dampfturbinenanlage |
DE1551235B2 (de) * | 1967-01-27 | 1972-11-16 | Aktiengesellschaft Brown, Boveri & Cie., Baden (Schweiz) | Dampfkraftanlage zur deckung von spitzenlast oder einer raschen lasterhoehung |
SE395930B (sv) * | 1975-12-19 | 1977-08-29 | Stal Laval Turbin Ab | Reglersystem for angturbinanleggning |
US4403476A (en) * | 1981-11-02 | 1983-09-13 | General Electric Company | Method for operating a steam turbine with an overload valve |
JPS5970003U (ja) * | 1982-11-01 | 1984-05-12 | 三菱重工業株式会社 | 蒸気タ−ビン |
JPS63143305A (ja) * | 1986-12-08 | 1988-06-15 | Ishikawajima Harima Heavy Ind Co Ltd | タ−ビン過負荷防止方法 |
JPH02308904A (ja) * | 1989-05-24 | 1990-12-21 | Hitachi Ltd | 蒸気タービン装置及びその制御方法及び制御装置 |
JPH03134203A (ja) * | 1989-10-18 | 1991-06-07 | Toshiba Corp | 再熱式抽気タービン |
SU1813885A1 (ru) * | 1991-04-15 | 1993-05-07 | Sev Zap Otdel Vsesoyuznogo Ni | Способ работы парогазовой установки |
RU2110022C1 (ru) * | 1996-04-29 | 1998-04-27 | Леонид Иванович Архипов | Система регулирования турбодетандера |
RU2144994C1 (ru) * | 1997-12-09 | 2000-01-27 | Акционерное общество открытого типа "Ленинградский Металлический завод" | Парогазовая установка |
DE10042317A1 (de) * | 2000-08-29 | 2002-03-14 | Alstom Power Nv | Dampfturbine und Verfahren zur Einleitung von Beipassdampf |
JP4509759B2 (ja) * | 2004-12-08 | 2010-07-21 | 株式会社東芝 | 蒸気タービンの過負荷運転装置および蒸気タービンの過負荷運転方法 |
-
2009
- 2009-09-22 EP EP09012048A patent/EP2299068A1/de not_active Withdrawn
-
2010
- 2010-09-09 US US13/496,020 patent/US20120174584A1/en not_active Abandoned
- 2010-09-21 WO PCT/EP2010/063846 patent/WO2011036136A1/de active Application Filing
- 2010-09-21 RU RU2012116067/06A patent/RU2508454C2/ru active
- 2010-09-21 PL PL10760971T patent/PL2480762T3/pl unknown
- 2010-09-21 JP JP2012526087A patent/JP5539521B2/ja active Active
- 2010-09-21 KR KR1020127010440A patent/KR101445179B1/ko active IP Right Grant
- 2010-09-21 EP EP10760971.1A patent/EP2480762B1/de active Active
- 2010-09-21 CN CN201080042337.9A patent/CN102575530B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011036136A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011036136A1 (de) | 2011-03-31 |
EP2480762B1 (de) | 2014-08-13 |
RU2012116067A (ru) | 2013-10-27 |
PL2480762T3 (pl) | 2015-02-27 |
US20120174584A1 (en) | 2012-07-12 |
CN102575530A (zh) | 2012-07-11 |
JP2013502538A (ja) | 2013-01-24 |
CN102575530B (zh) | 2014-11-12 |
EP2299068A1 (de) | 2011-03-23 |
KR101445179B1 (ko) | 2014-09-29 |
KR20120068946A (ko) | 2012-06-27 |
RU2508454C2 (ru) | 2014-02-27 |
JP5539521B2 (ja) | 2014-07-02 |
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