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1. WO2007144285 - STEAM POWER PLANT

Publication Number WO/2007/144285
Publication Date 21.12.2007
International Application No. PCT/EP2007/055457
International Filing Date 04.06.2007
IPC
F22G 1/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
GSUPERHEATING OF STEAM
1Steam superheating characterised by heating method
F01K 7/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
7Steam 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
02the engines being of multiple-expansion type
F01K 7/44 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
7Steam 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
34the engines being of extraction or non-condensing type; Use of steam for feed-water heating
44Use of steam for feed-water heating and another purpose
F01K 3/26 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
3Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
18having heaters
26with heating by steam
CPC
F01K 3/262
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
3Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
18having heaters
26with heating by steam
262by means of heat exchangers
F01K 7/025
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
7Steam engine plants characterised by the use of specific types of engine
02the engines being of multiple-expansion type
025Consecutive expansion in a turbine or a positive displacement engine
F01K 7/22
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
7Steam engine plants characterised by the use of specific types of engine
16the engines being only of turbine type
22the turbines having inter-stage steam heating
F01K 7/44
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
7Steam engine plants characterised by the use of specific types of engine
34the engines being of extraction or non-condensing type; Use of steam for feed-water heating
44Use of steam for feed-water heating and another purpose
F22D 1/32
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
DPREHEATING, 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
1Feed-water heaters, i.e. economisers or like preheaters
32arranged to be heated by steam, e.g. bled from turbines
F22G 1/005
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
GSUPERHEATING OF STEAM
1Steam superheating characterised by heating method
005the heat being supplied by steam
Applicants
  • SIEMENS AKTIENGESELLSCHAFT [DE]/[DE] (AllExceptUS)
  • KRZYSLAK, Piotr [PL]/[PL] (UsOnly)
  • DOBROWOLSKI, Piotr [PL]/[PL] (UsOnly)
Inventors
  • KRZYSLAK, Piotr
  • DOBROWOLSKI, Piotr
Common Representative
  • SIEMENS AKTIENGESELLSCHAFT
Priority Data
10 2006 028 007.514.06.2006DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) DAMPFKRAFTANLAGE
(EN) STEAM POWER PLANT
(FR) CENTRALE À VAPEUR
Abstract
(DE)
Die Erfindung betrifft eine Dampfkraftanlage (1) in welcher ein Arbeitsfluid (2) in einem Kreislauf umläuft, wobei eine regenerative Zwischenüberhitzung (30) vorgesehen ist, die vorzugsweise den gesamten Strom des Arbeitsfluids (2) vor dem Eintritt in eine Niederdruckturbine (11) zwischenüberhitzt und welche mittels Dampfentnahmen aus der stromaufwärts befindlichen Entspannungsstrecke (8) beheizt wird. Die die Zwischenüberhitzung (30) beheizenden Dampfströme werden bevorzugt zur Speisefluidvorwärmung (4) genutzt. Die Zwischenüberhitzung (30) ist als mehrstufige regenerative Zwischenüberhitzung (30) ausgebildet. Dies führt zu erhöhten Wirkungsgraden und geringerer Erosion an den Niederdruckschaufeln.
(EN)
The invention relates to a steam power plant (1) in which a working fluid (2) circulates in a circuit, wherein a regenerative intermediate superheater (30) is provided which preferably intermediately superheats the entire flow of the working fluid (2) before it enters into a low-pressure turbine (11) and which is heated by means of steam extractions from the relief path (8) situated upstream. The steam flows which heat the intermediate superheater (30) are preferably utilized for feed fluid pre-heating (4). The intermediate superheater (30) is embodied as multi-stage regenerative intermediate superheater (30). This leads to increased efficiencies and reduced erosion on the low-pressure blades.
(FR)
L'invention concerne une centrale à vapeur (1) dans laquelle circule un fluide de travail (2) dans un circuit. Un surchauffage intermédiaire régénératif (30) surchauffe de préférence tout le courant du fluide de travail (2) avant son entrée dans une turbine basse pression (11) et est chauffé par prélèvement de vapeur hors de la section de détente (8) située en amont. Les courants de vapeur chauffant le surchauffage intermédiaire (30) sont de préférence utilisés pour le préchauffage du fluide d'alimentation (4). Le surchauffage intermédiaire (30) est réalisé sous forme de surchauffage intermédiaire (30) régénératif à plusieurs étages. Ceci donne lieu à des rendements plus élevés et une plus faible érosion au niveau des aubes de basse pression.
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