DE102010039870A1 - Steam power plant - Google Patents
Steam power plant Download PDFInfo
- Publication number
- DE102010039870A1 DE102010039870A1 DE201010039870 DE102010039870A DE102010039870A1 DE 102010039870 A1 DE102010039870 A1 DE 102010039870A1 DE 201010039870 DE201010039870 DE 201010039870 DE 102010039870 A DE102010039870 A DE 102010039870A DE 102010039870 A1 DE102010039870 A1 DE 102010039870A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- steam
- feedwater
- turbine
- power plant
- 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
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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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating
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- 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
-
- 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
- F01K7/34—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
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- 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
- F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
- F01K9/02—Arrangements or modifications of condensate or air pumps
- F01K9/023—Control thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Turbines (AREA)
Abstract
Die Erfindung betrifft ein Dampfkraftwerk (1) mit einem Hauptturbosatz (2), einer Speisewasserpumpe (17) zum Pumpen von Speisewasser in einen Kessel (8), einer Speisepumpen-Antriebsturbine (18) zum Antreiben der Speisewasserpumpe (17), wobei die Speisepumpen-Antriebsturbine (18) als Dampfturbine ausgebildet ist, deren Frischdampfseite (19) mit einer Dampfzuführung (9) aus dem Hauptturbosatz (2) strömungstechnisch verbunden ist, und wobei eine weitere Speisewasserpumpe (170) parallel zur Speisewasserpumpe (17) angeordnet ist.The invention relates to a steam power plant (1) with a main turbo set (2), a feed water pump (17) for pumping feed water into a boiler (8), a feed pump drive turbine (18) for driving the feed water pump (17), the feed pump The drive turbine (18) is designed as a steam turbine, the live steam side (19) of which is fluidically connected to a steam supply (9) from the main turbine set (2), and a further feed water pump (170) is arranged parallel to the feed water pump (17).
Description
Die Erfindung betrifft ein Dampfkraftwerk gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a steam power plant according to the preamble of
In Dampfkraftwerken bzw. in Kraftwerksprozessen wird Speisewasser verwendet, das in einem Dampferzeuger in komprimierten und hoch temperierten Dampf überführt und anschließend in einem Dampf-Hauptturbosatz thermisch umgewandelt wird. Das Speisewasser wird dazu mit Hilfe einer Speisewasserpumpe gegen den Widerstand des Frischdampf-Druckes in den Kessel bzw. Dampferzeuger gepumpt. Häufig wird diese Speisewasserpumpe durch eine zusätzliche Dampfturbine angetrieben, die daher auch als Speisepumpen-Antriebsturbine (SPAT) bezeichnet wird. In herkömmlichen Kraftwerksprozessen wird die Speisepumpen-Antriebsturbine dabei aus einer Anzapfung der Hauptdampfturbine gespeist (bei einem Druckniveau zwischen 10 und 15 bar) und anschließend auf ein Kondensatorniveau expandiert.In steam power plants or in power plant processes feedwater is used, which is transferred in a steam generator in compressed and high-temperature steam and then thermally converted in a steam main turbo set. The feed water is pumped by means of a feedwater pump against the resistance of the live steam pressure in the boiler or steam generator. Often, this feed water pump is driven by an additional steam turbine, which is therefore also referred to as feed pump drive turbine (SPAT). In conventional power plant processes, the feed pump drive turbine is fed from a tap of the main steam turbine (at a pressure level between 10 and 15 bar) and then expanded to a condenser level.
Bei der Auslegung dieser Art von Speisewasserpumpenantrieben muss aber berücksichtigt werden, dass die Speisewasserpumpe in Extremfällen einen um 20% bis 30% über dem Normalbetrieb liegenden Leistungsbedarf benötigt und somit Leistungsreserven aufweisen muss. Dieser erhöhte Leistungsbedarf muss durch die Speisepumpen-Antriebsturbine bereitgestellt werden. Dazu wird bei der Konstruktion bzw. im laufenden Betrieb der Dampfkraftwerksanlage für die Speisepumpen-Antriebsturbine eine entsprechende Reserve berücksichtigt bzw. vorgehalten.In the design of this type of feedwater pump drives but must be taken into account that the feedwater pump in extreme cases requires a 20% to 30% above normal operation power requirements and thus must have power reserves. This increased power requirement must be provided by the feed pump power turbine. For this purpose, a corresponding reserve is taken into account or kept in reserve during the construction or during ongoing operation of the steam power plant for the feed pump drive turbine.
Das Bereitstellen solcher Leistungsreserven für die Speisewasserpumpe durch die Speisepumpen-Antriebsturbine führt aber dazu, dass im Normalbetrieb – wo diese Reserven nicht benötigt werden – diese Speisepumpen-Antriebsturbine entsprechend gedrosselt werden muss. Diese Drosselung bewirkt aber eine Verschlechterung des Gesamtwirkungsgrads der Dampfkraftwerksanlage im Normalbetrieb.However, the provision of such power reserves for the feedwater pump by the feed pump drive turbine means that in normal operation - where these reserves are not needed - this feed pump drive turbine must be throttled accordingly. However, this throttling causes a deterioration of the overall efficiency of the steam power plant in normal operation.
Aufgabe der Erfindung ist es, ein Dampfkraftwerk bereitzustellen, das den zuvor beschriebenen Nachteil überwindet.The object of the invention is to provide a steam power plant, which overcomes the disadvantage described above.
Gelöst wird diese Aufgabe durch ein Dampfkraftwerk gemäß Anspruch 1.This object is achieved by a steam power plant according to
Dadurch, dass bei einem Dampfkraftwerk mit einem Hauptturbosatz, einer Speisewasserpumpe zum Pumpen von Speisewasser in einen Kessel, einer Speisepumpen-Antriebsturbine zum Antreiben der Speisewasserpumpe, wobei die Speisepumpen-Antriebsturbine als Dampfturbine ausgebildet ist, deren Frischdampfseite mit einer Dampfzuführung aus dem Hauptturbosatz strömungstechnisch verbunden ist, eine weitere Speisewasserpumpe parallel zur bisherigen Speisewasserpumpe angeordnet ist, kann die bisherige Speisewasserpumpe für ein Leistungsniveau für den Normalbetrieb und die weitere Speisewasserpumpe für Leistungsreserven ausgelegt werden und bereitstehen. Die Dampfkraftwerksanlage kann so im optimalen Wirkungsgrad gefahren werden, da im Normalbetrieb keine Drosselung der Speisewasserantriebsturbine mehr notwendig ist.Characterized in that in a steam power plant with a main turbo set, a feedwater pump for pumping feedwater into a boiler, a feed pump drive turbine for driving the feedwater pump, wherein the feed pump drive turbine is designed as a steam turbine whose live steam side is fluidly connected to a steam supply from the main turbo set , A further feedwater pump is arranged parallel to the previous feedwater pump, the previous feedwater pump for a power level for normal operation and the other feedwater pump for power reserves can be designed and available. The steam power plant can be driven in optimal efficiency, since in normal operation no throttling of the feedwater turbine is more necessary.
Ein optimaler Gesamtwirkungsgrad wird erreicht, wenn die Speisewasserpumpe bei nahezu 100% der Kesselleistung vorzugsweise 70% bis 90% der benötigten Speisewassermenge pumpt, und die weitere Speisewasserpumpe entsprechend der geforderten über diese Leistung hinausgehenden Leistungsreserven dimensioniert ist. Somit kann die weitere Speisewasserpumpe die Pumpenleistung für das gesamte Leistungsspektrum der Anlage – von der Teillast bis zur Überlast – je nach Bedarf passend ergänzen.Optimum overall efficiency is achieved when the feedwater pump pumps at nearly 100% of the boiler output, preferably 70% to 90% of the required feedwater quantity, and the additional feedwater pump is sized in accordance with the required power reserves beyond that power. Thus, the additional feed water pump can complement the pump performance for the entire performance spectrum of the system - from the partial load to the overload - as needed.
Wird die weitere Speisewasserpumpe durch einen separaten Antrieb, insbesondere durch einen Elektromotor, autark vom Hauptturbosatz angetrieben, kann besonders schnell und flexibel und ohne weitere zusätzliche Einstellungen an den eigentlichen Dampfkraftwerkskomponenten des Hauptturbosatzes auf Leistungsschwankungen reagiert werden.If the additional feedwater pump is driven independently of the main turbine set by a separate drive, in particular by an electric motor, it is possible to react to fluctuations in output particularly quickly and flexibly and without any additional additional adjustments to the actual steam power plant components of the main turbocharger set.
Die Erfindung soll nun anhand der nachfolgenden Figuren beispielhaft erläutert werden. Es zeigen:The invention will now be explained by way of example with reference to the following figures. Show it:
Im Hauptkondensator
Das Drosselorgan
Erfindungsgemäß ist nun hier parallel zu der Speisewasserpumpe
Die weitere Speisewasserpumpe
Durch die Aufteilung der Pumpenarbeit auf zwei Aggregate, hier der Speisewasserpumpe
Durch die erfindungsgemäße Anordnung werden somit nahezu sämtliche, über den Normalbetrieb hinausgehende Leistungsanforderungen, von der durch die SPAT- bzw. Tuning-Turbine angetriebenen Speisewasserpumpe, auf die parallel geschaltete Pumpe übertragen. Somit kann die SPAT- bzw. Tuning-Turbine über weite Lastbereiche mit voll geöffneten Ventilen und damit ohne Drosselverluste gefahren werden.As a result of the arrangement according to the invention, virtually all the power requirements beyond normal operation are transferred from the feedwater pump driven by the SPAT or tuning turbine to the pump connected in parallel. Thus, the SPAT or tuning turbine can be driven over wide load ranges with fully open valves and thus without throttle losses.
Das erfindungsgemäß so angeordnete Dampfkraftwerk ist dem Stand der Technik sowohl in Fragen der Bauteilbeanspruchung, des Wirkungsgrades und des Betriebes überlegen. Damit qualifiziert es sich in besonderer Weise für die Anwendung in zukünftigen, wirkungsgradkritischen Großkraftwerksanlagen mit einfacher oder doppelter Zwischenüberhitzung.The steam power plant thus arranged according to the invention is superior to the state of the art both in terms of the component stress, the efficiency and the operation. This makes it particularly suitable for use in future, efficiency-critical large-scale power plants with single or double reheat.
Die in Bezug auf
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010039870 DE102010039870A1 (en) | 2010-08-27 | 2010-08-27 | Steam power plant |
PCT/EP2011/064167 WO2012025440A2 (en) | 2010-08-27 | 2011-08-17 | Steam power plant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010039870 DE102010039870A1 (en) | 2010-08-27 | 2010-08-27 | Steam power plant |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010039870A1 true DE102010039870A1 (en) | 2012-03-01 |
Family
ID=44503848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201010039870 Ceased DE102010039870A1 (en) | 2010-08-27 | 2010-08-27 | Steam power plant |
Country Status (2)
Country | Link |
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DE (1) | DE102010039870A1 (en) |
WO (1) | WO2012025440A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103498782A (en) * | 2013-10-17 | 2014-01-08 | 中国电力工程顾问集团华东电力设计院 | Arrangement structure of pneumatic water supply pump set and water supply booster pump arrangement method thereof |
DE102016214960B3 (en) * | 2016-07-11 | 2017-07-06 | Siemens Aktiengesellschaft | Power plant with optimized preheating of feed water for low-level turbo sets |
CN109695484A (en) * | 2018-05-21 | 2019-04-30 | 陈建文 | A kind of tubular pole residual neat recovering system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109869208A (en) * | 2017-12-05 | 2019-06-11 | 平高集团有限公司 | Steam generating system and the seawater desalination system for using the steam generating system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3972196A (en) * | 1974-05-10 | 1976-08-03 | Westinghouse Electric Corporation | Steam pressure increasing device for drive turbines |
DE3044991A1 (en) * | 1980-11-28 | 1982-07-01 | Steag Ag, 4300 Essen | Coal plus refuse burning power station - has refuse-fired boiler steam fed into coal-fired boiler system after high-pressure turbine, before reheater |
US5533337A (en) * | 1993-07-23 | 1996-07-09 | Hitachi, Ltd. | Feed water supply system of power plant |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3163009A (en) * | 1963-08-29 | 1964-12-29 | Gen Electric | Boiler feed pump arrangement for steam turbine powerplant |
JPS5399103A (en) * | 1977-02-08 | 1978-08-30 | Toshiba Corp | Boiler feed water pump controller |
JPS57197499A (en) * | 1981-03-27 | 1982-12-03 | Hitachi Ltd | Reactor feedwater control device |
-
2010
- 2010-08-27 DE DE201010039870 patent/DE102010039870A1/en not_active Ceased
-
2011
- 2011-08-17 WO PCT/EP2011/064167 patent/WO2012025440A2/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3972196A (en) * | 1974-05-10 | 1976-08-03 | Westinghouse Electric Corporation | Steam pressure increasing device for drive turbines |
DE3044991A1 (en) * | 1980-11-28 | 1982-07-01 | Steag Ag, 4300 Essen | Coal plus refuse burning power station - has refuse-fired boiler steam fed into coal-fired boiler system after high-pressure turbine, before reheater |
US5533337A (en) * | 1993-07-23 | 1996-07-09 | Hitachi, Ltd. | Feed water supply system of power plant |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103498782A (en) * | 2013-10-17 | 2014-01-08 | 中国电力工程顾问集团华东电力设计院 | Arrangement structure of pneumatic water supply pump set and water supply booster pump arrangement method thereof |
CN103498782B (en) * | 2013-10-17 | 2016-04-13 | 中国电力工程顾问集团华东电力设计院有限公司 | A kind of layout of automobile assembly welding Iine and pre feedwater pump method for arranging thereof |
DE102016214960B3 (en) * | 2016-07-11 | 2017-07-06 | Siemens Aktiengesellschaft | Power plant with optimized preheating of feed water for low-level turbo sets |
WO2018010878A1 (en) * | 2016-07-11 | 2018-01-18 | Siemens Aktiengesellschaft | Power plant having optimized preheating of feed water for deep erected turbine sets |
CN109695484A (en) * | 2018-05-21 | 2019-04-30 | 陈建文 | A kind of tubular pole residual neat recovering system |
Also Published As
Publication number | Publication date |
---|---|
WO2012025440A3 (en) | 2013-10-17 |
WO2012025440A2 (en) | 2012-03-01 |
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Legal Events
Date | Code | Title | Description |
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R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |
Effective date: 20120817 |