EP1937942A2 - Dampfkraftwerk sowie verfahren zum nachrüsten eines dampfkraftwerks - Google Patents
Dampfkraftwerk sowie verfahren zum nachrüsten eines dampfkraftwerksInfo
- Publication number
- EP1937942A2 EP1937942A2 EP06807006A EP06807006A EP1937942A2 EP 1937942 A2 EP1937942 A2 EP 1937942A2 EP 06807006 A EP06807006 A EP 06807006A EP 06807006 A EP06807006 A EP 06807006A EP 1937942 A2 EP1937942 A2 EP 1937942A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- turbine
- power plant
- main
- drive shaft
- 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
- 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
Definitions
- the invention relates to a steam power plant with at least one steam heater for providing compressed
- the invention further relates to a method for retrofitting a steam power plant with at least one steam heater for providing compressed steam, as well as a steam turbine downstream, arranged on a main shaft and designed for operation with high ⁇ pressure and / or medium pressure steam main turbine.
- the method comprises the step of retrofitting the ther ⁇ mischen power plant with an additional drive shaft arranged on an additional turbine.
- Main turbine can be designed as a separate high-pressure, as a separate with ⁇ teldruck- or as a combined high-pressure / medium-pressure turbine.
- High-pressure turbines are usually designed for a temperature of 520 to 600 0 C and a pressure of 120 to 300 bar.
- medium-pressure turbines are generally designed to hold 520 to 62O 0 C hot steam at a pressure of 30 to 60 bar.
- the steam generator of the steam power plant can use various heat sources for steam generation, in particular the exhaust gas of a gas turbine. In that sense, the steam power plant can also be part of another power plant.
- an auxiliary turbine is connected on an auxiliary drive shaft between the steam heater and the main turbine.
- the main drive shaft is mechanically coupled to each other with the set drive shaft ⁇ for driving an electric generator.
- One of the problem underlying the invention is to provide a steam power plant of the type mentioned, as well as a method for retrofitting a steam power plant of the initially ge ⁇ called type such to improve, that the power ⁇ and efficiency can be further increased the steam power plant.
- auxiliary turbine is designed to a relative to a rated speed of the main turbine by at least 50% higher operating speed.
- the task is further solved by a generic method in which the auxiliary turbine is designed to be at a relative to a nominal rotational speed ⁇ number of the main turbine by at least 50% higher Be ⁇ operating speed.
- the steam conditions for the additional turbine which is designed in particular as a high-pressure or medium-pressure turbine, can be increased considerably.
- the respect to the nominal speed of the main turbine by at least 50% higher lying operating speed of the auxiliary turbine enables a high efficiency-enhancing operation of the auxiliary turbine with steam conditions of increased temperature and increased pressure.
- An implementation of this increased steam conditions in mechanical power can accordingly high in entspre ⁇ operating speed with increased efficiency respectively.
- This increases the output power of the additional turbine.
- the vapor state advantageously has a vapor state which the main turbine is usually designed. That is, the power generated by the auxiliary turbine is available in addition to the power generated by the steam power plant prior to retrofitting with the auxiliary turbine.
- the additional turbine is arranged on an auxiliary drive shaft, retrofitting of an existing steam power plant with the auxiliary turbine is possible without much effort.
- the main ⁇ drive shaft of the existing steam power plant does not have to be modified.
- For the on the auxiliary drive shaft ⁇ arranged additional turbine only a suitable space in the steam power plant must be found and then the steam heater leaving the steam mass flow are passed through appropriate adaptation of pipelines through the auxiliary turbine to the main turbine.
- the operating speed of the auxiliary turbine with respect to the rated speed of the main turbine twice the value.
- the operating speed of the record turbine ⁇ 80 to 120 Hz, preferably 100 Hz.
- the nominal ⁇ speed of the main turbine is half as large as the operation ⁇ speed of the auxiliary turbine, so that in this case is the rated speed of the main turbine 40 to 60 Hz, preferably 50 Hz.
- the secondary turbine is designed for a vapor Tempe ⁇ temperature of 700 to 76o C 0. That is, the steam ⁇ heater is designed to generate a steam temperature of 700 to 76O 0 C.
- the steam in the auxiliary turbine cools with appropriate expansion to 52O 0 C to 62O 0 C and is forwarded at this temperature to the main turbine.
- the said steam temperatures lead to a further improved efficiency and a further improved power output of the steam power plant.
- the auxiliary drive shaft is coupled to a high-speed generator.
- the thermal power plant has an electric speed converter for reducing the frequency of the AC voltage generated by the high-speed generator.
- a main generator see the main drive shaft pre ⁇ .
- the electric speed converter reduces the frequency of the AC voltage generated by the high speed generator coupled to the auxiliary drive shaft to the frequency of the AC electric current generated by the main drive shaft.
- This preferably has the usual mains frequency of 50 Hz.
- the alternating current generated by the additional turbine can thus be fed into the electricity grid together with the alternating current generated by the main generator without further conversion effort.
- the auxiliary drive shaft is coupled via a mechanical speed converter to the main drive shaft.
- the mechanical speed converter reduces the frequency of the auxiliary drive shaft to the frequency of the main drive shaft.
- the mechanical energy generated by the turbine to set ⁇ is thus transferred to the shaft line of the main shaft.
- the connected to the main drive shaft main electrical generator wanders delt with it also generated by the secondary turbine mechanical ⁇ cal energy into electrical energy.
- An additional generator does not have to be provided.
- the steam heater is designed as a generator Frischdampfer-, which in particular comprises a steam boiler on ⁇ .
- the steam heater is designed as a reheater. With a reheater, steam that has already passed through a first turbine can be processed for feeding to the additional turbine according to the invention.
- the steam heater in particular the steam generator, or the Reheater compared to conventional steam heaters or reheaters additional superheater surfaces on.
- the additional turbine is arranged close to the steam heater, in particular on a steam boiler of the steam heater.
- This Anord ⁇ planning is particularly useful for supplying super-supercritical steam conditions to the additional turbine.
- the respective length of Frischdampferzeu ⁇ ger and reheater lines is reduced to a minimum. The remaining lines can be conventionally ⁇ out leads.
- the main propulsion turbine are successively a SwissGermanhit- zer, another additional turbine and another Schotur ⁇ bine, which are designed in particular as a medium-pressure turbine from ⁇ downstream, the further 1925tur ⁇ bine on the auxiliary drive shaft and the other Main turbine are arranged on the main drive shaft.
- the steam power plant can be achieved.
- the first main turbine leaving expanded vapor is preferably brought by the reheater back to a high vapor state at a temperature of about 72o C 0.
- the auxiliary drive shaft is supplied with additional power, which increases the electric power output of the electric generator coupled thereto.
- the steam heater is provided with additional overheating. zerflachen retrofitted. In particular, this After ⁇ armor of additional superheater surfaces occurs at a configured as a steam heater boiler.
- the steam heater thus retrofitted can thus generate higher steam conditions. This in turn allows for improved operation of the retrofitted with the auxiliary turbine steam power plant.
- the rated speed of the additional turbine compared to the rated speed of the main turbine twice the value, in particular 80 to 120 Hz, preferably be ⁇ carries this 100 Hz.
- the additional turbine is expedient ⁇ tiger to a steam temperature of 700 to 76O 0 C ⁇ laid out.
- the steam power plant is advantageously retrofitted with a high-speed generator and an electric speed converter, coupled the fast-running generator to the auxiliary drive shaft, and coupled the electric speed converter to the high-speed generator for reducing the frequency of the alternating voltage generated by the high-speed generator.
- the steam power plant is advantageously retrofitted with a mechanical ⁇ rule speed transducer and the auxiliary drive ⁇ wave with the main drive shaft via the mechanical torque converter coupled.
- a further advantageous embodiments will guide form the secondary turbine close to the steam superheater arranged in particular on a steam boiler of the steam heater is ⁇ .
- a further supplementary turbine a reheater is arranged downstream of the steam power plant and a further main turbine of the further auxiliary turbine downstream ⁇ is arranged.
- the other main turbine and the additional additional turbine ⁇ are each designed as a medium-pressure turbines, the further auxiliary turbine on the auxiliary drive shaft and the other main turbine are arranged on the main drive shaft.
- Fig. 1 is a schematic view of a steam power plant prior to retrofitting according to the invention, as well as
- Fig. 2 is a schematic view of a retrofitted according to the invention steam power plant.
- FIG. 1 shows a conventional steam power plant 10 prior to retrofitting according to the invention
- FIG. 2 shows a steam power plant 12 retrofitted according to the invention or a corresponding newly produced steam power plant 12.
- the steam power plant 10 according to FIG. 1 is equipped with a steam generator 14 serving as steam heater.
- the live steam generator 14 either steam is supplied at low temperature or liquid, which is / are DA transforms the fresh steamer ⁇ generator 14 high in vapor pressure and high temperature and with vapor of a high vapor state.
- the fresh steam is then ⁇ leads 18 supplied ⁇ via a steam line 16 on the one designed as a high pressure turbine first main turbine, in which it expands to drive a main drive shaft 20 connected to the first main turbine 18th
- the expanded and thus cooled steam is then fed to a reheater 22, wherein a repeated heating of the steam takes place.
- the steam is supplied via a further steam line 16 to a second main turbine 24 designed as a medium-pressure turbine.
- the steam then expands again and transmits additional torque to the main turbine drive shaft 20.
- the second main turbine 24 the steam of a low-pressure turbine 26 is supplied, in which it further expands with further transmission of torque to the main drive shaft 20.
- a main electric generator 28 is connected by means of which the mechanical energy of the main drive shaft 20 is converted into electrical energy.
- the high-pressure, medium-pressure and low-pressure turbines used in the steam power plant 10 according to FIG. 1 are designed for steam conditions customary for such turbines.
- ⁇ high pressure turbines are usually designed to a temperature of 520-600 0 C and a pressure of 120 to 300 bar.
- With ⁇ teltikturbinen hot steam are usually designed to hold also 520 to 62O 0 C at a pressure of 30 to 60 bar.
- Low-pressure turbines are usually designed for 4 to 10 bar pressure.
- FIG. 2 a steam power plant after a 12 erfindungsge- MAESSEN retrofitting to increase the performance and effect of the steam power plant ⁇ grades shown.
- Elements of the steam power plant ⁇ 12 which match corresponding elements of the steam power plant 10 shown in Fig. 1 are identified by the same reference numerals. With regard to their function, reference is made to the comments with respect to FIG. 1.
- the steam power plant 12 is compared to the steam power plant 10 initially equipped with a steam generator 14 downstream of the auxiliary steam heater 14 x for additional heating of the live steam to about 700 0 C. In this case, the function of the additional steam heater 14 x can also be integrated into the main steam generator 14.
- the steam generator 14 may be provided with additional superheater surfaces for higher steam conditions, or may be designed for higher steam conditions when the steam power plant shown in FIG. 2 is newly manufactured.
- the steam power plant 12 is equipped with a arranged on an auxiliary drive shaft 32 first auxiliary turbine 30 or retrofitted.
- the first auxiliary turbine 30 is designed as a high pressure turbine designed to receive 700 ° C. hot steam.
- the first auxiliary turbine 30 expands at a temperature of about 700 0 C supplied steam and thereby cools to 56O 0 C to 62O 0 C.
- the expanded steam is then directed via a steam line 16 into the first main turbine 18.
- the steam is supplied to the reheater 22 and a downstream auxiliary reheater 22 x .
- the additional reheater 22 x may also be functionally integrated into the reheater 22. This can also be accomplished here with additional superheater surfaces in the reheater 22.
- the second auxiliary turbine 34 is just ⁇ if arranged on the auxiliary drive shaft 32.
- the Anord ⁇ voltage of several drive shafts in accordance with the steam power plant 12 to the main drive shaft 20 and the auxiliary drive shaft 32 is also referred to as a multi-shaft arrangement.
- the second additional turbine 34 exerts a further torque on the formean ⁇ drive shaft 32.
- the first auxiliary turbine 30 and the second auxiliary turbine 34 are designed for a speed that is twice as high as the rated speed of the main turbines 18, 24 and 26.
- the auxiliary drive shaft 32 is at a frequency of 100 Hz compared to a drive frequency of the main drive 20 driven by 50 Hz.
- the additional electric generator 36 is coupled to the main electric generator 28 via an electric speed converter (not shown in the drawing). In another not in the drawing
- auxiliary drive shaft 32 and the main drive shaft 20 may also be coupled by means of a mechanical speed converter (transmission).
- a mechanical speed converter transmission
- all that is necessary is an electrical generator to convert the mechanical energy into electricity.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06807006T PL1937942T3 (pl) | 2005-10-17 | 2006-10-05 | Siłownia parowa i sposób doposażania siłowni parowej |
EP06807006.9A EP1937942B1 (de) | 2005-10-17 | 2006-10-05 | Dampfkraftwerk sowie verfahren zum nachrüsten eines dampfkraftwerks |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05022606A EP1775430A1 (de) | 2005-10-17 | 2005-10-17 | Dampfkraftwerk sowie Verfahren zum Nachrüsten eines Dampfkraftwerks |
PCT/EP2006/067096 WO2007045563A2 (de) | 2005-10-17 | 2006-10-05 | Dampfkraftwerk sowie verfahren zum nachrüsten eines dampfkraftwerks |
EP06807006.9A EP1937942B1 (de) | 2005-10-17 | 2006-10-05 | Dampfkraftwerk sowie verfahren zum nachrüsten eines dampfkraftwerks |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1937942A2 true EP1937942A2 (de) | 2008-07-02 |
EP1937942B1 EP1937942B1 (de) | 2016-09-14 |
Family
ID=36513498
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05022606A Withdrawn EP1775430A1 (de) | 2005-10-17 | 2005-10-17 | Dampfkraftwerk sowie Verfahren zum Nachrüsten eines Dampfkraftwerks |
EP06807006.9A Not-in-force EP1937942B1 (de) | 2005-10-17 | 2006-10-05 | Dampfkraftwerk sowie verfahren zum nachrüsten eines dampfkraftwerks |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05022606A Withdrawn EP1775430A1 (de) | 2005-10-17 | 2005-10-17 | Dampfkraftwerk sowie Verfahren zum Nachrüsten eines Dampfkraftwerks |
Country Status (6)
Country | Link |
---|---|
US (1) | US7975483B2 (de) |
EP (2) | EP1775430A1 (de) |
JP (1) | JP4833293B2 (de) |
CN (1) | CN101292075B (de) |
PL (1) | PL1937942T3 (de) |
WO (1) | WO2007045563A2 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101042058B (zh) * | 2007-04-27 | 2011-12-07 | 冯伟忠 | 一种高低位分轴布置的汽轮发电机组 |
ES2304118B1 (es) * | 2008-02-25 | 2009-07-29 | Sener Grupo De Ingenieria, S.A | Procedimiento para generar energia mediante ciclos termicos con vapor de presion elevada y temperatura moderada. |
WO2009118332A2 (de) | 2008-03-25 | 2009-10-01 | Alstom Technology Ltd | Kraftwerksanlage sowie verfahren zu deren betrieb |
EP2147896A1 (de) * | 2008-07-22 | 2010-01-27 | Uhde GmbH | Niedrigenergie-Verfahren zur Herstellung von Ammoniak oder Methanol |
CN101809252B (zh) | 2008-08-11 | 2014-11-05 | 三菱重工业株式会社 | 蒸气轮机设备 |
CN101802349B (zh) * | 2008-08-11 | 2014-11-05 | 三菱重工业株式会社 | 蒸气轮机设备 |
EP2685055A1 (de) * | 2012-07-12 | 2014-01-15 | Siemens Aktiengesellschaft | Verfahren zur Stützung einer Netzfrequenz |
JP2014239604A (ja) * | 2013-06-07 | 2014-12-18 | 株式会社神戸製鋼所 | 発電装置 |
EP3262284B1 (de) * | 2015-02-24 | 2019-01-02 | Siemens Aktiengesellschaft | Kombikraftwerk mit überkritischer dampfturbine |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1971818A (en) * | 1931-09-11 | 1934-08-28 | Gen Electric | Frequency and load control of alternating current systems |
US2467092A (en) * | 1944-12-16 | 1949-04-12 | Comb Eng Superheater Inc | Steam power plant |
US2504640A (en) * | 1948-07-03 | 1950-04-18 | Westinghouse Electric Corp | Reheat turbine control |
US2540691A (en) * | 1948-08-19 | 1951-02-06 | Westinghouse Electric Corp | Valve control of reheat turbine installation |
DE820600C (de) * | 1950-05-21 | 1951-11-12 | Grosskraftwerk Mannheim A G | Dampfkraftanlage, deren Kessel seine Verbrennungsluft aus einer Luftturbine erhaelt |
FR1511106A (fr) * | 1966-12-15 | 1968-01-26 | Steinmueller Gmbh L & C | Procédé de réglage des températures de vapeur dans les processus de fonctionnement de machines à vapeur comportant un ou plusieurs surchauffages intermédiaires |
US4007596A (en) * | 1975-04-24 | 1977-02-15 | Westinghouse Electric Corporation | Dual turbine power plant and method of operating such plant, especially one having an HTGR steam supply |
JPH03189333A (ja) * | 1989-12-18 | 1991-08-19 | Jinichi Nishiwaki | 水冷却式ガスタービン装置 |
JPH04171202A (ja) * | 1990-11-06 | 1992-06-18 | Toshiba Corp | 蒸気タービン発電プラント |
JP3279740B2 (ja) * | 1993-07-23 | 2002-04-30 | 株式会社日立製作所 | 発電プラントの給水装置 |
JP3315800B2 (ja) * | 1994-02-22 | 2002-08-19 | 株式会社日立製作所 | 蒸気タービン発電プラント及び蒸気タービン |
JP3977546B2 (ja) * | 1999-03-25 | 2007-09-19 | 株式会社東芝 | 蒸気タービン発電設備 |
JP3095745B1 (ja) * | 1999-09-09 | 2000-10-10 | 三菱重工業株式会社 | 超高温発電システム |
JP2002221007A (ja) * | 2001-01-23 | 2002-08-09 | Toshiba Corp | 火力発電プラント |
JP2002247759A (ja) * | 2001-02-21 | 2002-08-30 | Toshiba Eng Co Ltd | 電源装置および高周波電源装置 |
EP1445429A1 (de) * | 2003-02-07 | 2004-08-11 | Elsam Engineering A/S | Dampfturbinensystem |
-
2005
- 2005-10-17 EP EP05022606A patent/EP1775430A1/de not_active Withdrawn
-
2006
- 2006-10-05 PL PL06807006T patent/PL1937942T3/pl unknown
- 2006-10-05 JP JP2008534998A patent/JP4833293B2/ja not_active Expired - Fee Related
- 2006-10-05 US US12/083,668 patent/US7975483B2/en not_active Expired - Fee Related
- 2006-10-05 EP EP06807006.9A patent/EP1937942B1/de not_active Not-in-force
- 2006-10-05 WO PCT/EP2006/067096 patent/WO2007045563A2/de active Application Filing
- 2006-10-05 CN CN2006800385510A patent/CN101292075B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007045563A3 * |
Also Published As
Publication number | Publication date |
---|---|
EP1775430A1 (de) | 2007-04-18 |
JP2009511810A (ja) | 2009-03-19 |
CN101292075A (zh) | 2008-10-22 |
US20090229267A1 (en) | 2009-09-17 |
CN101292075B (zh) | 2011-09-28 |
JP4833293B2 (ja) | 2011-12-07 |
WO2007045563A2 (de) | 2007-04-26 |
PL1937942T3 (pl) | 2017-04-28 |
US7975483B2 (en) | 2011-07-12 |
WO2007045563A3 (de) | 2007-09-13 |
EP1937942B1 (de) | 2016-09-14 |
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