WO2009127523A2 - Dampfturbinensystem für ein kraftwerk - Google Patents
Dampfturbinensystem für ein kraftwerk Download PDFInfo
- Publication number
- WO2009127523A2 WO2009127523A2 PCT/EP2009/053924 EP2009053924W WO2009127523A2 WO 2009127523 A2 WO2009127523 A2 WO 2009127523A2 EP 2009053924 W EP2009053924 W EP 2009053924W WO 2009127523 A2 WO2009127523 A2 WO 2009127523A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steam
- live
- valve
- mass flow
- bypass 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.)
- Ceased
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
- 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
- F01K7/165—Controlling means specially adapted therefor
-
- 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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
- F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
-
- 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
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/181—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters using nuclear heat
Definitions
- the invention relates to a steam turbine system for a power plant and the power plant with the steam turbine system.
- a nuclear power plant is operated, for example, with a pressurized water reactor.
- fuel elements are provided in which, caused by atomic decomposition reactions, heat is released.
- the heat is dissipated by a coolant, e.g. Water, discharged, with the steam produced in a steam generator live steam.
- the live steam is conducted in a live steam line to a steam turbine, which is coupled to a generator to drive it.
- Main steam in the steam turbine is expanded to condenser pressure, the steam turbine and the generator is driven to generate electricity.
- a condenser is provided in which the expanded steam is condensed using a refrigerant and returned to the steam generator.
- the steam turbine has a bleed steam outlet, is removed by the bleed steam for further use in the nuclear power plant.
- the drive power of the steam turbine is determined by the temperature and the static pressure of the live steam, the static pressure in the condenser and the mass flow of the live steam entering the steam turbine and the mass flow of the bleed steam taken at a certain pressure level of the steam turbine.
- a steam control valve is provided on the steam turbine.
- a nominal operating state is defined in which the temperature and the static pressure of the live steam and the mass flow of the live steam is fixed.
- the live steam mass flow is defined as 100%.
- an operating range is to be considered, which is determined by a variation of the temperature and the static pressure of the live steam and the live steam mass flow.
- the steam turbine is designed for a stationary partial load operation with a constant mean coolant temperature in the upper load range.
- Another operating condition to be considered in the design of the steam turbine is characterized by a reduced static pressure of the live steam.
- the steam steam control valve is fully opened with a nominal or smaller live steam quantity of the steam generator / reactor, so that the static pressure of the live steam is lowered and thus a lowering of the coolant temperature takes place (so-called “stretch-out operation") of the live steam leads to an increase in the specific live steam volume, whereby a strong throttling of the fresh steam control valve in the nominal operating state is necessary.
- a performance guarantee for the steam turbine is conventionally related to the nominal operating state, which is mobile only with the throttled steam control valve.
- the operation of the steam turbine with throttled live steam valve is effectively, whereby the thermal efficiency of the nuclear power plant is lowered.
- the object of the invention is to provide a steam turbine system for a power plant and the power plant with the steam turbine system, wherein the power plant has a high thermal efficiency.
- the steam turbine system according to the invention for the power plant has a steam turbine, which has at its live steam inlet a steam control valve and a bleed steam outlet, and a live steam bypass line with a throttle valve, which at the entrance of the steam control valve and at the bleed steam outlet for conducting throttled with the throttle valve live steam of
- the steam turbine with the main steam control valve and the live steam bypass line with the throttle valve are designed such that the steam turbine both in the nominal operating state at 100% fresh steam mass flow and in a special operating state at over 100% live steam mass flow respectively can be moved with fully opened steam control valve, wherein excess live steam mass flow compared to the nominal operating state at the entrance of Frischdampfregelven- tils via the Frischdampfumg
- a lowering of the static pressure of the live steam by passing a predetermined portion of the live steam mass flow via the live steam bypass line can be achieved.
- the portion of the live steam which is supplied by the steam generator beyond the 100% live steam mass flow is not supplied directly to the steam turbine, but is conducted past the main steam bypass line past the main steam control valve and fed into the bleed steam outlet at the highest static pressure.
- the steam control valve is fully open, whereby a loss of efficiency by a possible Throttling the live steam valve does not occur.
- the 100% fresh steam mass flow corresponds to the live steam mass flow in the nominal operating state of the steam turbine.
- the steam turbine needs less or no bleed steam to be taken because the live steam bypassing the steam bypass steam line is fed to the bleed steam outlet.
- the thermal efficiency of the steam turbine system is high in a wide operating range of the steam turbine.
- the power plant is able to participate in a frequency control / support of a power grid. If the power plant is, for example, a nuclear power plant, then with the steam turbine system possible power reserves of the nuclear reactor can be used without conversion of the steam turbine with appropriate operation, the steam turbine system having a high thermal efficiency in the nominal operating state.
- the nuclear power plant has a higher operating flexibility, whereby a fuel change in the nuclear power plant can be delayed, so that a higher burnup of the fuel rods can be achieved.
- the nuclear power plant in the so-called “stretch-out" operation to drive, in which the increased reactivity can be achieved by lowering the pressure of the live steam.
- the steam turbine system according to the invention has a high thermal efficiency when the steam turbine is a saturated steam engine with a low live steam condition and thus a reduced expansion gradient.
- the steam turbine is run at 100% fresh steam mass flow with fully opened steam control valve in the nominal operating state, so that in a wide operating range of the steam turbine system Androsse- treatment of the fresh steam control valve in the nominal operating state not needs to be provided.
- This is advantageous because even with a one percent throttling of the main steam control valve in the nominal operating state would be expected with a reduction in power of the steam turbine at the same reactor power of 0.13%.
- the avoidance of the throttling of the fresh steam control valve in the nominal operating state due to the higher efficiency of the steam turbine system leads to a power gain of the power plant.
- thermodynamic guaranteed values of the steam turbine system according to the invention are improved in the performance guarantee, because a corresponding throttling of the steam control valves can be omitted.
- the live steam mass flow is preferably 102% to 115% of the live steam mass flow in the nominal operating state.
- the power plant may utilize potential power reserves of the reactor / steam generator permanently in steady-state operation or, alternatively, for short-term power release for frequency control / frequency support requirements.
- the steam turbine system preferably has a main steam line with a quick-action valve which is connected to the main steam control valve for supplying the live steam mass flow, the main steam bypass line being connected between the main steam control valve and the quick-closing valve of the main steam line.
- the main steam by-pass line is branched off from the main steam line downstream of the quick-closing valve, as a result of which the live steam bypass line is also protected by the quick-closing valve of the live steam line.
- the quick-acting valve in the live steam by-pass line is preferably used as a control valve with safety function trained. As a result, it is advantageous to provide only a single valve in the main steam bypass line.
- the fish steam bypass line is connected upstream of the quick-acting valve.
- the fresh steam control valve is a quick-closing control valve with safety function for double protection.
- the piping connection is advantageously simple and no corresponding modifications need to be provided for a valve test operation, so that restrictions imposed thereby are prevented.
- Quick stop valve is provided and the live steam bypass line has a quick-release valve, which is installed upstream of the throttle valve.
- the steam turbine is protected at its live steam inlet and the bypass line.
- the quick-closing valve of the fresh-steam bypass line is coupled with the quick-closing valve at the main steam inlet, so that the quick-acting valve triggers the fresh steam bypass line with the quick-closing valve at the live steam inlet.
- the throttle valve is coupled to the tap steam inlet, so that the throttle valve throttles the live steam to the bleed steam pressure in the bleed steam outlet.
- the bypass mass flow is regulated by the throttle valve via the live steam bypass line, so that the live steam pressure required by the reactor / steam generator can be set in the main steam line when the main steam control valves are fully open.
- the steam turbine system has a bleed steam line which is connected to the bleed steam outlet and into which the live steam bypass line flows.
- the power plant according to the invention with the steam turbine system has to reheat the live steam on a reheater to which the bleed steam can be supplied.
- the steam turbine system has the live steam bypass line through which steam is supplied to the bleed steam with the throttle valve.
- the live steam supplied to the steam turbine via the live steam bypass line is supplied to the reheater for overheating of the live steam, whereby the power plant has a high thermal efficiency.
- the reheater is designed in two stages.
- bypass mass flow can be significantly increased before it comes to a direct introduction of the throttled bypass mass flow into the steam turbine.
- a check valve is provided at the bleed steam outlet, upstream of which the live steam bypass line opens.
- Figures 1 and 2 is a schematic representation of a first embodiment of the steam turbine system according to the invention and the power plant according to the invention and
- Figure 3 is a schematic representation of a first embodiment of the steam turbine system according to the invention.
- a steam turbine system 100 includes a steam turbine 110 and a steam turbine 111.
- the steam turbines 110 and 111 have a live steam inlet 112 to 115 for the live steam inlet and a bleed steam outlet 116 for the extraction of tap steam.
- Steam turbines 110 and 111 are provided at the steam recesses 112 to 115 steam control valves 117 to 120. To protect the live steam inlets 112 to 115 and the steam turbine are connected to these quick-closing valves 121 to 124.
- the steam turbine system 100 has live steam lines 125 to 128, which are respectively connected to the live steam inlets 112 to 115.
- a bleed steam line 129 is provided at the bleed steam outlet 116.
- the steam turbine system 100 has a live steam bypass line 130, which is connected to the inlet of the main steam control valves 117 to 120 and the bleed steam outlet 116, so that live steam can be conducted past the inlet of the fresh steam control valves 117 to 129 to the bleed steam outlet 116 at the steam turbines 110 and 111 in the live steam bypass line 130 is.
- the fish Steam bypass 130 is connected upstream of the quick-acting valve.
- a quick-closing valve 131 and, subsequently, a throttle valve 132 are provided in the flow direction.
- the quick-closing valve 131 is coupled to the quick-closing valve 121, so that both quick-action valves 121 to 124 and 131 trigger synchronously when a triggering event (for example, overspeed) is reached.
- the throttle valve 132 is regulated in response to the vapor pressure downstream of the main steam bypass passage 130, so that the main steam is throttled from the entrance of the main steam control valves 117 to 120 to the bleed steam outlet 116.
- live steam lines 125 to 128 are provided, in which live steam for operating the steam turbine 110 and 111 is provided.
- live steam for operating the steam turbine 110 and 111 is provided in the main steam lines 125 to 128.
- quick-acting valves 146 to 149 are provided for securing the live steam inlet and the steam turbine.
- check valves 170 and 171 are provided in the bleed line 129, with which a return flow in the bleed steam line 129 can be prevented.
- the live steam bypass line 130 branches off in the live steam lines 125 to 128 between the quick-closing valves 146 to 149 and the entry of the main steam control valves 117 to 120 and opens into the bleed steam line 129 between the check valve 171 and the bleed steam outlet 116.
- control valves 150 and 151 are provided parallel to the quick-closing valves 146 to 149.
- the steam turbine system 100 has reheaters 140 and 141, each of which has a first reheater section. stage 142 and 143 and a second reheater stage 144 and 145 have.
- second heating pipes 162 and 163 branch off downstream of the non-return flap 170, in which tapping steam is conducted to the first reheater stages 142 and 143.
- first heating steam lines 160 and 161 are provided at the second reheater stages 144 and 145 for supplying live steam, which is fed into the main steam line 125 to 128 upstream of the quick-closing valves 146 to 149.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Control Of Turbines (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/937,294 US20110146279A1 (en) | 2008-04-14 | 2009-04-02 | Steam turbine system for a power plant |
| EP09733333A EP2288793A2 (de) | 2008-04-14 | 2009-04-02 | Dampfturbinensystem für ein kraftwerk |
| CN2009801132490A CN102007274A (zh) | 2008-04-14 | 2009-04-02 | 发电厂的汽轮机系统 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08007316A EP2131013A1 (de) | 2008-04-14 | 2008-04-14 | Dampfturbinensystem für ein Kraftwerk |
| EP08007316.6 | 2008-04-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2009127523A2 true WO2009127523A2 (de) | 2009-10-22 |
| WO2009127523A3 WO2009127523A3 (de) | 2009-12-23 |
Family
ID=41165404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/053924 Ceased WO2009127523A2 (de) | 2008-04-14 | 2009-04-02 | Dampfturbinensystem für ein kraftwerk |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20110146279A1 (de) |
| EP (2) | EP2131013A1 (de) |
| KR (1) | KR20100133427A (de) |
| CN (1) | CN102007274A (de) |
| RU (1) | RU2010146183A (de) |
| WO (1) | WO2009127523A2 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8926273B2 (en) | 2012-01-31 | 2015-01-06 | General Electric Company | Steam turbine with single shell casing, drum rotor, and individual nozzle rings |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120071751A (ko) | 2010-12-23 | 2012-07-03 | 엘지디스플레이 주식회사 | 디스플레이 장치 |
| KR101989516B1 (ko) * | 2012-09-24 | 2019-06-14 | 삼성전자주식회사 | 반도체 패키지 |
| JP6185338B2 (ja) * | 2013-08-29 | 2017-08-23 | ヤンマー株式会社 | 発電装置 |
| EP3040525B1 (de) | 2015-01-05 | 2020-08-26 | General Electric Technology GmbH | Mehrstufige Dampfturbine zur Energieerzeugung |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60175711A (ja) | 1984-02-23 | 1985-09-09 | Mitsubishi Heavy Ind Ltd | 発電機負荷制限動作装置 |
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| BE794556A (fr) * | 1972-01-27 | 1973-07-26 | Westinghouse Electric Corp | Systeme et methode de fonctionnement de rechauffeur de cycles de vapeur pour un systeme a turbine destine a la production d'electricite |
| US3879616A (en) * | 1973-09-17 | 1975-04-22 | Gen Electric | Combined steam turbine and gas turbine power plant control system |
| CH617494A5 (de) * | 1975-08-22 | 1980-05-30 | Bbc Brown Boveri & Cie | |
| US4015430A (en) * | 1975-09-30 | 1977-04-05 | Westinghouse Electric Corporation | Electric power plant and turbine acceleration control system for use therein |
| US4007595A (en) * | 1975-09-30 | 1977-02-15 | Westinghouse Electric Corporation | Dual turbine power plant and a reheat steam bypass flow control system for use therein |
| CH633348A5 (de) * | 1978-08-10 | 1982-11-30 | Bbc Brown Boveri & Cie | Dampfturbinenanlage. |
| JPS5572608A (en) * | 1978-11-29 | 1980-05-31 | Hitachi Ltd | Driving process of cross-compound turbine bypath system and its installation |
| US4253308A (en) * | 1979-06-08 | 1981-03-03 | General Electric Company | Turbine control system for sliding or constant pressure boilers |
| US4320625A (en) * | 1980-04-30 | 1982-03-23 | General Electric Company | Method and apparatus for thermal stress controlled loading of steam turbines |
| US4353216A (en) * | 1980-09-29 | 1982-10-12 | General Electric Company | Forward-reverse flow control system for a bypass steam turbine |
| US4372125A (en) * | 1980-12-22 | 1983-02-08 | General Electric Company | Turbine bypass desuperheater control system |
| JPS6038523B2 (ja) * | 1981-04-16 | 1985-09-02 | 株式会社日立製作所 | タ−ビン制御装置 |
| US4448026A (en) * | 1981-09-25 | 1984-05-15 | Westinghouse Electric Corp. | Turbine high pressure bypass pressure control system |
| US4455836A (en) * | 1981-09-25 | 1984-06-26 | Westinghouse Electric Corp. | Turbine high pressure bypass temperature control system and method |
| US4471620A (en) * | 1981-11-13 | 1984-09-18 | Westinghouse Electric Corp. | Turbine low pressure bypass spray valve control system and method |
| JPH0743087B2 (ja) * | 1985-04-13 | 1995-05-15 | バブコツク日立株式会社 | ボイラ起動装置 |
| US4598551A (en) * | 1985-10-25 | 1986-07-08 | General Electric Company | Apparatus and method for controlling steam turbine operating conditions during starting and loading |
| JPS62206203A (ja) * | 1986-03-07 | 1987-09-10 | Hitachi Ltd | 蒸気タ−ビン運転制御方法 |
| US4873827A (en) * | 1987-09-30 | 1989-10-17 | Electric Power Research Institute | Steam turbine plant |
| US5042246A (en) * | 1989-11-06 | 1991-08-27 | General Electric Company | Control system for single shaft combined cycle gas and steam turbine unit |
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| US5361585A (en) * | 1993-06-25 | 1994-11-08 | General Electric Company | Steam turbine split forward flow |
| JP3913328B2 (ja) * | 1997-08-26 | 2007-05-09 | 株式会社東芝 | コンバインドサイクル発電プラントの運転方法およびコンバインドサイクル発電プラント |
| WO2001011198A1 (de) * | 1999-08-10 | 2001-02-15 | Siemens Aktiengesellschaft | Kraftwerk, insbesondere industriekraftwerk |
| EP1288761B1 (de) * | 2001-07-31 | 2017-05-17 | General Electric Technology GmbH | Verfahren zur Regelung eines Niederdruckbypassystems |
| FI120658B (fi) * | 2005-05-04 | 2010-01-15 | Metso Power Oy | Välitulistushöyryn lämmönsäätömenetelmä, lämmönsäätöjärjestelmä sekä voimalaitos |
| US7343744B2 (en) * | 2005-07-27 | 2008-03-18 | General Electric Company | Method and system for controlling a reheat turbine-generator |
| EP1854964A1 (de) * | 2006-05-10 | 2007-11-14 | Siemens Aktiengesellschaft | Nutzung der Dampfturbine zur primären Frequenzregelung in Energieerzeugungsanlagen |
| EP1881164B1 (de) * | 2006-07-21 | 2016-09-14 | Ansaldo Energia S.P.A. | Vorrichtung für das Regulieren von Absperrventilen einer Dampfturbinenanlage |
| JP2008159806A (ja) * | 2006-12-22 | 2008-07-10 | Sharp Corp | 半導体発光装置およびその製造方法 |
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| US7937928B2 (en) * | 2008-02-29 | 2011-05-10 | General Electric Company | Systems and methods for channeling steam into turbines |
-
2008
- 2008-04-14 EP EP08007316A patent/EP2131013A1/de not_active Withdrawn
-
2009
- 2009-04-02 US US12/937,294 patent/US20110146279A1/en not_active Abandoned
- 2009-04-02 KR KR1020107022819A patent/KR20100133427A/ko not_active Withdrawn
- 2009-04-02 CN CN2009801132490A patent/CN102007274A/zh active Pending
- 2009-04-02 EP EP09733333A patent/EP2288793A2/de not_active Withdrawn
- 2009-04-02 WO PCT/EP2009/053924 patent/WO2009127523A2/de not_active Ceased
- 2009-04-02 RU RU2010146183/06A patent/RU2010146183A/ru not_active Application Discontinuation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60175711A (ja) | 1984-02-23 | 1985-09-09 | Mitsubishi Heavy Ind Ltd | 発電機負荷制限動作装置 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8926273B2 (en) | 2012-01-31 | 2015-01-06 | General Electric Company | Steam turbine with single shell casing, drum rotor, and individual nozzle rings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102007274A (zh) | 2011-04-06 |
| RU2010146183A (ru) | 2012-05-20 |
| US20110146279A1 (en) | 2011-06-23 |
| EP2288793A2 (de) | 2011-03-02 |
| WO2009127523A3 (de) | 2009-12-23 |
| KR20100133427A (ko) | 2010-12-21 |
| EP2131013A1 (de) | 2009-12-09 |
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