EP3280884A1 - Verfahren zum abkühlen einer dampfturbine - Google Patents
Verfahren zum abkühlen einer dampfturbineInfo
- Publication number
- EP3280884A1 EP3280884A1 EP16728922.2A EP16728922A EP3280884A1 EP 3280884 A1 EP3280884 A1 EP 3280884A1 EP 16728922 A EP16728922 A EP 16728922A EP 3280884 A1 EP3280884 A1 EP 3280884A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- steam turbine
- cooling rate
- determined
- cooling
- 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
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 turbines are used in power plants to generate energy. After successful commissioning, the steam turbines are more or less used in continuous operation. Nevertheless, it is necessary to carry out revisions from time to time. Here, it is necessary that the vapor ⁇ turbines are decommissioned and are cooled.
- the "forced cooling” essentially comprises three phases, wherein in the first phase, a steam temperature reduction occurs during power operation and then takes place after switching off a natural cooling and then 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 the use of a boiler spray and / or by power reduction
- care must be taken that the steam temperatures are reduced so that the design limits of the steam turbine are not exceeded, for which the steam temperature can be reduced by means of rigid ramps ground.
- the object of the invention is therefore to accelerate the method of cooling the steam turbine. This problem is solved by the independent claim 1.
- 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 ⁇ Liche cooling rate is determined and compared with the predetermined Ab ⁇ cooling rate and the Steam generator is operated such that the actual cooling rate substantially corresponds to the predetermined cooling rate.
- an essential feature of the invention is that a regulation is taken into account, which now regulates 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.
- Figure 1 is a schematic representation of an inventive ⁇ SEN power plant.
- 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. Fresh steam is generated in Dampferzeu ⁇ ger 6 and flows through a main steam pipe 8 into the high pressure turbine section 3 and from there via an outlet 9 10 to a reheater in the intermediate superheater 10 of the steam is again brought to a higher temperature and then flows into the medium pressure 4. Steam turbine 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 into the condenser 7.
- the steam condenses to water and is returned to the steam generator 6 by means of a pump 13 guided.
- the steam turbine 1 is flown with steam from the steam generator 6, wherein a predetermined cooling rate T is determined before the steam turbine ⁇ 2. Furthermore, determines the actual From ⁇ cooling rate T did and with the predetermined cooling T ago 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 Liehe cooling rate T tat substantially corresponds to the predetermined cooling rate T 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. In other words, with the automation system, the optimum steam temperature will quickly lower the temperature, if there are still large allowances and reduce more slowly, if only small allowances are still available, such. As close to the limit of interpretation ⁇ . Here are taken into account temperatures of the steam ⁇ turbine and thus the wall temperature limits.
- the specified 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)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15173619.6A EP3109418A1 (de) | 2015-06-24 | 2015-06-24 | Verfahren zum abkühlen einer dampfturbine |
| PCT/EP2016/062963 WO2016206972A1 (de) | 2015-06-24 | 2016-06-08 | Verfahren zum abkühlen einer dampfturbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3280884A1 true EP3280884A1 (de) | 2018-02-14 |
| EP3280884B1 EP3280884B1 (de) | 2021-07-28 |
Family
ID=53491304
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15173619.6A Withdrawn EP3109418A1 (de) | 2015-06-24 | 2015-06-24 | Verfahren zum abkühlen einer dampfturbine |
| EP16728922.2A Active EP3280884B1 (de) | 2015-06-24 | 2016-06-08 | Verfahren zum abkühlen einer dampfturbine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15173619.6A Withdrawn EP3109418A1 (de) | 2015-06-24 | 2015-06-24 | Verfahren zum abkühlen einer dampfturbine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10422251B2 (de) |
| EP (2) | EP3109418A1 (de) |
| JP (1) | JP2018523048A (de) |
| KR (1) | KR102055378B1 (de) |
| CN (1) | CN107889514B (de) |
| WO (1) | WO2016206972A1 (de) |
Families Citing this family (1)
| 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 |
Family Cites Families (16)
| 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 (de) | 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 |
| WO2002103177A1 (en) | 2001-06-18 | 2002-12-27 | 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 |
| AU2008202733A1 (en) * | 2007-06-20 | 2009-01-22 | Stanwell Corporation Limited | Method and apparatus for cooling a steam turbine |
| 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 |
| EP2630342B1 (de) * | 2010-10-19 | 2014-09-17 | ALSTOM Technology Ltd | Verfahren für den betrieb eines gud-raftwerks mit kraft-wärme-kopplung und gud-kraftwerk zur durchführung des verfahrens |
| EP2620604A1 (de) * | 2012-01-25 | 2013-07-31 | Siemens Aktiengesellschaft | Verfahren zur Steuerung eines Abkühlungsprozesses von Turbinenkomponenten |
| 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 |
-
2015
- 2015-06-24 EP EP15173619.6A patent/EP3109418A1/de not_active Withdrawn
-
2016
- 2016-06-08 US US15/735,472 patent/US10422251B2/en active Active
- 2016-06-08 KR KR1020187001780A patent/KR102055378B1/ko active Active
- 2016-06-08 WO PCT/EP2016/062963 patent/WO2016206972A1/de not_active Ceased
- 2016-06-08 CN CN201680036522.4A patent/CN107889514B/zh active Active
- 2016-06-08 JP JP2017566722A patent/JP2018523048A/ja active Pending
- 2016-06-08 EP EP16728922.2A patent/EP3280884B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107889514B (zh) | 2020-02-21 |
| US10422251B2 (en) | 2019-09-24 |
| KR102055378B1 (ko) | 2019-12-12 |
| EP3280884B1 (de) | 2021-07-28 |
| EP3109418A1 (de) | 2016-12-28 |
| KR20180019210A (ko) | 2018-02-23 |
| US20180163572A1 (en) | 2018-06-14 |
| WO2016206972A1 (de) | 2016-12-29 |
| CN107889514A (zh) | 2018-04-06 |
| JP2018523048A (ja) | 2018-08-16 |
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