WO2018010878A1 - Installation de production d'électricité à préchauffage optimisé de l'eau d'alimentation pour turbogénérateurs montés à une faible hauteur - Google Patents

Installation de production d'électricité à préchauffage optimisé de l'eau d'alimentation pour turbogénérateurs montés à une faible hauteur Download PDF

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Publication number
WO2018010878A1
WO2018010878A1 PCT/EP2017/062130 EP2017062130W WO2018010878A1 WO 2018010878 A1 WO2018010878 A1 WO 2018010878A1 EP 2017062130 W EP2017062130 W EP 2017062130W WO 2018010878 A1 WO2018010878 A1 WO 2018010878A1
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WIPO (PCT)
Prior art keywords
steam
low
turbine
pump drive
line
Prior art date
Application number
PCT/EP2017/062130
Other languages
German (de)
English (en)
Inventor
Carsten Graeber
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2018010878A1 publication Critical patent/WO2018010878A1/fr

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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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating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
    • 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
    • F01K17/04—Using steam or condensate extracted or exhausted from steam engine plant for specific purposes other than heating
    • 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
    • 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
    • F01K7/38—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 the engines being of turbine type
    • 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
    • F01K7/44—Use of steam for feed-water heating and another purpose
    • 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
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • 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

Definitions

  • turbo set When using steam turbines in power plants, the type of installation of the turbo set is an essential condition for the plant design and thus for the costs incurred.
  • turbo set is generally understood the arrangement how turbines and generator are arranged on a common shaft.
  • the turbo set can be arranged in a so-called low position, which in recent years has mainly been used for combined cycle gas turbine (GUD) applications.
  • GUID combined cycle gas turbine
  • the condenser is placed next to the steam turbine.
  • a high position towards ⁇ finds predominantly in pure steam turbine plants application, which have a capacity of 250 MW or more.
  • high-set turbo sets can capacitor arranged for space reasons below the steam turbine.
  • the low setting offers special advantages, since the reduction of the installation height can result in more cost-effective project planning and erection of the machine house.
  • the disadvantage is that just the required for a regenerative preheating large number of taps on the steam turbine housing can be implemented very difficult constructive. Therefore, especially for larger steam power plants having a plurality of taps on the steam turbine housing, the high position of the turbo set constructively advantageous because an arrangement of the nozzle and the derivation of the pipeline due to the installation height (centerline) is possible ⁇ .
  • thermodynamic design of the turbo set is to be diverted, is a transfer of the thermodynamic design of the turbo set and the ent did not just make it as easy as moving technologies from a high-mounted turbo set to a low-set turbo set.
  • a thermodynamically designed high-altitude turbo set can therefore not be placed low, but always requires its own design. Since the arrangement of the taps, especially in the low pressure range, is made difficult by the low position, in the past only turbo sets for the low position with a small number of tapping options have been developed, which does not represent the optimum thermodynamic.
  • Object of the invention is therefore to admit a power plant at ⁇ which is on the one hand for the cost Tiefauf ⁇ position, so lowered Centerline, but requires fewer taps of the low-pressure part of the steam turbine, which while not significantly nega ⁇ tive thermodynamic effect , It is another object of the invention to provide a corresponding method.
  • the object relating to a power plant object of the inventions is dung achieved by a power plant, with a What ⁇ ser-steam circuit, wherein in the water-steam circuit min ⁇ least a low-pressure, a steam generator, a steam turbine, a condenser and a Feedwater pump with the feedwater pump via a shaft from a feedwater pump drive turbine (SPAT)
  • a feedwater pump drive turbine PAT
  • the invention is based on the consideration not to lead the steam from the feed pump drive turbine on the Kondensa ⁇ tor but to use the Niederbuchvormaschinermung. Since the feed pump drive turbine is supplied with higher-value steam from the medium-pressure part of the steam turbine, thereby a tapping of the low-pressure part of the steam turbine for the low-pressure preheating can be omitted. Through an optimized integration of the steam of the feed pump drive turbine in the additional low-pressure preheater thermodynamic see the disadvantage of otherwise missing Niedertemperaturvor mayberumg to 100 ° C is almost completely compensated.
  • Low pressure preheating can be done.
  • This additional supply of steam can be designed so thermodynamically that in special load cases, for example in case of failure of the low pressure preheater, the feedwater pump drive turbine can be operated without restrictions.
  • the steam line can be arranged at the steam outlet of the feedwater pump drive turbine, so that the low pressure preheater Abdampf from the tapping point of the feedwater pump drive turbine can be fed. This configuration relaxes the steam in the feed water pump power turbine and only the exhaust steam becomes
  • a bypass line is furthermore provided, via which the feedwater pump drive turbine is connected to the condenser, so that in the event of a fault, steam from the feedwater pump drive turbine can be supplied to the condenser.
  • the bypass line connects the feedwater pump turbine to the condenser.
  • Condensate accumulation established.
  • the main condensate is accumulated in the hotwell of the condenser.
  • the feed water for the supply of the steam generator is removed from the storage contents of the feed water tank.
  • the reduction of the main condensate quantity leads to a reduction in the low-pressure bleed-off mass flows and, associated therewith, to an increase in output in the turbo set, since the bleed steam that has not been removed can be expanded to condenser pressure. Since the first low-pressure preheater condenses the steam from the feed-water pump drive turbine and thus is needed to generate the power of the drive turbine, it must be reduced
  • the supply of storage sewasserpumpenturbine from the main steam turbine may in ⁇ dependence from the power demand of the feedwater pump (subcritical or supercritical) carried by the intermediate-pressure exhaust steam or the first medium pressure tap.
  • a quick-opening valve (control valve) can be switched, which is opened in case of failure. This valve increases the operational flexibility and safety of the power plant.
  • the bypass line is connected to the tapping point on the feedwater pump drive turbine.
  • the operational flexibility can be increased further, since a higher flexibility between the fulfillment of the requirements of the feedwater pump and the preheating section can be achieved, and at the same time can be reacted to incidents.
  • the bypass line is connected to the steam outlet at the feedwater pump drive turbine is. Depending on the design of the power plant, this configuration can also be advantageous.
  • the steam turbine of at least one high-pressure part to at least one medium-pressure part and Minim ⁇ least one low-pressure part.
  • the feedwater pump drive turbine is connected via a Schoanzapfdampftechnisch with steam from at least one medium-pressure part of Dampftur ⁇ bine, wherein in the Hauptanzapfdampf admir a control valve is connected, whereby steam in dependence on the power requirement of the feedwater pump drive turbine and / or the Niederbuchvor Suiters is controllable.
  • the feedwater pump drive turbine is connected to steam from at least one medium pressure section of the steam turbine via an exhaust steam line, wherein a control valve is connected in the exhaust steam line, through which steam as a function of the power requirement of the feedwater pumps -Atrieb drive turbine and / or the low ⁇ pressure preheater is regulated.
  • the low-pressure preheater comprises a connection for a condensate drain.
  • Condensate drain line provided by which the connection for condensate is connected to the main condensate line of the water-steam circuit.
  • the condensate can be discharged from the low-pressure preheater, and introduced at a suitable position in the main condensate line.
  • the low pressure preheater constitutes a first low pressure preheater.
  • the water / steam cycle further comprises a second low pressure preheater and a third low pressure preheater.
  • the second low-pressure preheater in this case comprises a connection for a condensate drain, and also the third low-pressure preheater comprises a connection for a condensate drain.
  • a first low pressure preheater constitutes a first low pressure preheater.
  • the water / steam cycle further comprises a second low pressure preheater and a third low pressure preheater.
  • the second low-pressure preheater in this case comprises a connection for a condensate drain, and
  • Condensate drain line provided by which the two connections for condensate ver ⁇ connected with the water-steam cycle, so drain condensate from the second low ⁇ pressure preheater and the third Niedertownvoriserr
  • the condensate drain line is connected to the main condensate line of the water-steam cycle.
  • the condensate can be introduced at a suitable location in the main condensate line, whereby the condenser is relieved.
  • the condensate drain line may be connected to the first low pressure preheater of the water-steam cycle.
  • this configuration can also be advantageous.
  • the invention is particularly directed to Kraftwerksanla ⁇ gene, which are configured as a steam turbine plant (DKW).
  • the on a method for operating a power plant ge ⁇ taught object of the invention is achieved by a method with a water-steam circuit, wherein in the water-steam circuit, at least one low-pressure, a steam generator, a steam turbine, a condenser and a feed ⁇ Water pump are connected, wherein the feedwater pump via a shaft of a feedwater pump drive turbine ⁇ is driven, wherein steam from the feedwater pump drive turbine via a steam line is fed to the low-pressure preheater.
  • the steam is taken either from a tapping point on the feedwater pump drive turbine which occurs between Dampfein ⁇ occurs and the steam outlet of the feedwater pump drive ⁇ turbine is arranged, or in the form of Abdampf from the steam outlet of the feedwater pump drive turbine.
  • steam is supplied to the condenser via a bypass line from the feedwater pump drive turbine in the event of a fault, the steam being supplied either from the tapping point or at the steam outlet at the
  • Feedwater pump drive turbine is removed.
  • the steam ⁇ removal from the extraction point is this the preferred Va ⁇ riante.
  • the removal of waste steam may be advantageous. For example, if no tap on the feedwater pump drive turbine is possible or wanted.
  • the steam turbine of at least one high-pressure part, to at least one medium-pressure part and Minim ⁇ least one low-pressure part.
  • the feedwater pump drive turbine is supplied either via a Schoanzapf ⁇ steam line with steam from at least one medium-pressure part of the steam turbine, or via an exhaust steam line with exhaust steam from at least one medium-pressure part of Dampfturbi ⁇ ne.
  • a control valve it is switched to the Hauptanzapfdampftechnisch or exhaust steam, whereby steam is controlled in depen ⁇ dependence of the performance requirement of Suitewasserpumpen- drive turbine and / or the Niederdruckvor lockerrs.
  • the low-pressure economizer is designed as a low-pressure ers ⁇ ter, wherein the water-steam circuit further comprises a second low-pressure and a third low-pressure.
  • Outflow condensate from the second low-pressure preheater is discharged at a connection for condensate drain, and drain condensate from the third low-pressure preheater is discharged at a connection for a further condensate drain.
  • a condensate drain line these two condensate drains are mixed, and the mixed drain condensate in the
  • Figure 1 is a schematic representation of a power plant with a high-altitude turbo set according to the prior art
  • Figure 2 is a schematic representation of a power plant with a low-set turbo set according to the prior art
  • Figure 3 is a schematic representation of a power plant with a low-set turbo set with a steam line through which the feedwater pump drive turbine is connected to the low-pressure preheater according to the invention
  • Figure 4 is a schematic representation of a power plant with a low-set turbo set, further developed with a bypass line through which the feedwater pump drive turbine with the condenser ver ⁇ is connected;
  • Figure 5 is a schematic representation of a power plant with a low-set turbo set according to a further development of the invention, wherein the steam line is connected to a tapping point on the feedwater pump drive turbine;
  • Figure 6 is a schematic representation of a power plant with a low-set turbo set according to a further development of the invention, wherein a
  • Condensate drain line 25 is provided, through which drain condensate from the connection for a condensate drain 24 from the first Niedertownvorierr 27 of the main condensate line 26 of the water-steam cycle 2 can be fed;
  • Figure 7 is a schematic representation of a power plant with a low-set turbo set according to a further development of the invention, wherein a
  • Condensate drain line 34 is provided by which drain condensate from a second and third
  • Figure 8 is a schematic representation of a power plant with a low-set turbo set according to a further development of the invention, wherein a
  • Condensate drain line is provided, through which drain condensate from a second and third low-pressure preheater and the third Niedertownvor Suiter mixable and the main condensate line is traceable;
  • FIG. 9 shows a schematic representation of a power plant with a low-set turbine set, according to a further development of FIG. 4, with a plurality of steam lines, via which the feedwater pump Drive turbine is connected to various Niedertownvorskarn.
  • FIG. 1 shows a simplified schematic representation of a power plant 1 with a high-altitude turbo set according to the prior art.
  • a not illustrated ⁇ set condensate pump is connected in the water-steam circuit 2.
  • the steam turbine in this example consists of a combined high pressure part 17, medium pressure part 18 and a separate low pressure part 19.
  • the steam turbine 7 is connected via a common shaft with a generator G.
  • the feedwater pump 9 is connected via a further shaft 10 to a feedwater pump drive turbine 11.
  • the steam turbine 7 is removed at the middle pressure part 18 at a tapping point ⁇ steam, and fed via a bleed steam line 22 of the feedwater pump drive turbine 11.
  • a control valve 23 is connected, with which the extracted steam can be controlled depending on the required amount of steam.
  • the feedwater pump drive turbine 11 the steam is expanded, and the feedwater pump 9 is driven via the shaft 10 via the force arising therefrom .
  • the expanded steam is supplied via a Dampflei ⁇ tung the capacitor. 8
  • the water-steam cycle 2 is essentially formed between the condenser 8 and the feedwater turbine 9 through a main condensate line 26.
  • the condenser 8 can be arranged below the turbo set. Also, it can easily connect to multiple taps from the low pressure part 19 of the steam turbine 7 steam for the low-pressure preheater 3 are removed.
  • three low-pressure preheaters 3 are provided, which are supplied with steam from the low-pressure part 19 of the steam turbine 7.
  • a first low-pressure preheater 27, a second low-pressure preheater 28 and a third low-pressure preheater 29 are also shown.
  • a fourth low-pressure preheater 34 is also shown, which, however, is supplied with steam from the medium-pressure stage 18. Not ge ⁇ shows are further Hochdruckvormaschiner.
  • FIG. 2 shows a simplified schematic representation of a power plant 1 with a deep-set turbo set according to the prior art.
  • the condenser 8 is structurally located next to the steam turbine 7. This requires, on the one hand, longer lineweighing from the low-pressure part 19 of the steam turbine 7 to the condenser 8.
  • Figure 2 shows a comparable water-steam circuit 2 as described in Figure 1, but can be through the
  • Figure 3 shows a schematic representation of a power plant 1 with a low-set turbo set with a steam line 12, via which the feedwater pump drive turbine 11 is connected to the low-pressure preheater 3 according to the invention.
  • Figure 3 differs in particular from the prior art in Figure 2, that at least one of Never ⁇ derdruckvor Anlagenr 3 vapor from the Suitewasserpumpen- power turbine is fed.
  • the low-pressure preheater 3 here symbolizes the first low-pressure preheater 27 from FIGS. 1 and 2.
  • further low-pressure preheaters which are supplied with steam via the low-pressure part 19 of the steam turbine 7 and are arranged between the low-pressure preheater 3 and the feedwater pump 9.
  • the steam from the feedwater pump drive turbine 11 is not fed to the condenser 8 as in FIG. 1 or 2, but used for low pressure preheating. Furthermore, the feedwater pump drive turbine 11 is supplied via a Hauptanzapf ⁇ steam line 20 with higher-grade steam from the medium-pressure part 18 of the steam turbine 7. As a result, an Anzap ⁇ tion of the low-pressure part 19 of the steam turbine 7 for the
  • control valve 21 which is connected in the Hauptanzapfdampflei ⁇ tion 20, steam is dependent on the Leis- Supply requirement of the feedwater pump drive turbine 11 and / or the low-pressure preheater 3 adjustable.
  • Re ⁇ gelventil 21 can thus be the line of the feedwater drive turbine 11 or the Niederbuchvor lockerrs 3 separated from each other, or regulate feedwater drive turbine 11 and 3 Niederbuchvor lockerrs together.
  • FIG. 4 is based on the inventive concept of FIG. 3 and shows a schematic representation of a power plant 1 with an advanced deep-set turbine set with a bypass line 16, via which the feedwater pump drive turbine 11 is connected to the condenser 8.
  • Figure 4 also shows a water-steam cycle 2, in which a low-pressure preheater 3, a steam generator 6, a
  • Steam turbine 7, a condenser 8 and a feedwater pump 9 are connected.
  • the steam turbine 7 also consists of a combined high-pressure part 17, medium-pressure part 18 and a separate low-pressure part 19.
  • the feed water pump 9 is connected via a ⁇ inde pendent of the turbine generator shaft 10 with a feed water pump drive turbine. 11
  • the steam turbine 7 is taken from the intermediate-pressure section 18 at a tapping point steam, and steam line over the Anzapf- 22 of the feed water pump drive turbine 11 out to ⁇ .
  • a control valve 23 is connected in the tapping steam line 22, a control valve 23 in the feed-water pump drive turbine 11 .
  • the steam is expanded, thereby driving the feed ⁇ water pump 9 via the shaft 10th
  • the expanded steam is supplied via the steam line 12 to the first low-pressure preheater 27.
  • the tap steam line 22 and the control valve 23 essentially correspond to the main tap steam line 20 and the control valve 21.
  • the bypass line 16 is connected to the steam line 12 in FIG. But the bypass line 16 can also be connected directly to the feedwater pump drive turbine 11 with the same effect.
  • a quick-opening valve (Re ⁇ gelarmatur) is connected to all relevant load conditions ( ⁇ including Störlast tubn) to be able to control.
  • Figure 4 also shows a second low-pressure economizer 28 and a third low-pressure economizer 29, which will ensure 7 ver ⁇ with tapped steam from the low-pressure section 19 of the steam turbine. Furthermore, a fourth low-pressure preheater 34 can also be seen, which, however, is supplied with steam from the middle pressure part 18 of the steam turbine 7. The in the
  • Low pressure preheater introduced steam gives off heat at the respective point in the water-steam cycle 2 from.
  • the resulting condensate is discharged from the respective low ⁇ pressure preheater.
  • the fourth low-pressure preheater 34 comprises a connection for a condensate drain
  • the third low-pressure preheater 29 comprises a connection for a condensate outlet 31 through which outflow condensate can be fed to the second low-pressure preheater 28.
  • the second low-pressure preheater 28 includes a connection for a condensate drain 30 through the drain condensate of the main condensate line 26 is the water-steam cycle 2 is supplied.
  • the drain condensate of the first low-pressure preheater 27 is connected via a
  • Condensate drain line 25 is returned to the condenser 8.
  • FIG. 5 shows a schematic representation of a power plant with a low-set turbine set according to a further development of the invention, the steam line 12 being connected to a tapping point 13 on the feedwater pump drive turbine 11.
  • Figure 5 corresponds in this case We ⁇ sentlichen the embodiment of Figure 4, but with the following differences:
  • the feed water pump drive turbine 11 is supplied via the Hauptanzapfdampf Gustav 20 with steam from the exhaust steam of the intermediate pressure section 18 of the steam turbine ⁇ 7 and not by bled steam.
  • the steam line 12 is connected to a tapping point 13 on the feedwater pump drive turbine 11.
  • the tapping point 13 is arranged between the steam inlet 14 and the steam outlet 15 of the feedwater pump drive turbine 11.
  • the bypass line 16 is connected to the steam outlet 15.
  • FIG. 6 shows a schematic representation of a power plant 1 with a low-set turbo set according to a further development of the invention, wherein the condensate drain line 25, the drain condensate from the first Nielichvorierr 27 of the main condensate line 26 of the water-steam cycle 2 supplies.
  • the condensate drain line 25 may be connected another pump.
  • the feedwater pump drive turbine 11 is supplied with steam via the main extraction steam line 20 from the medium-pressure part 18 of the steam turbine 7.
  • Condensate drain line 34 is provided, through which effluent condensate from the second low-pressure preheater 28 and third low-pressure preheater 29 mixable and the first low-pressure preheater 27 is traceable.
  • Figure 8 shows a schematic representation of a power plant with a low-set turbo set according to a further development of the invention, wherein a condensate drain line is provided, through which drain condensate from a two ⁇ ten Niedertownvor Anlagenr 28 and third Niedertownvor lockerr 29 can be mixed and the Hauptkondensat effet traceable. It is assumed that there are additional advantages for the system layout, if a part of Nie ⁇ derdruckvorowskir be plugged into the machine capacitor. Inserted means that 1 or 2 low-pressure will not be placed in the nacelle, but di rectly ⁇ be accommodated in the capacitor with the advantage of very short steam pipes and a space saving.
  • FIG. 9 is a is a schematic illustration of a power plant with a deep ⁇ established turbo set, according to a further development of figure 4, wherein a plurality of steam lines are provided via which the Lucasiganpumpen- comparable power turbine with different Niederdruckvor Suitern is prevented.
  • the arrangement shows a first low pressure preheater 27, a second low pressure preheater 28, a third low pressure preheater 29, and a fourth low pressure preheater 34.
  • the feedwater pump drive turbine 11 has a flash point and a bleed point.
  • the exhaust point is connected to the first low-pressure preheater 27 by a first steam line 12.
  • the tapping point is connected to a second line 12 ⁇ with a low pressure preheater downstream of the first low-pressure preheater 27 connected.
  • the downstream low pressure preheater is the second low pressure preheater 28.
  • the second low-pressure preheater 28 comprises a cooler with a connection for a condensate drain through the drain ⁇ condensate the first low-pressure preheater 27 can be fed.
  • the main advantage of this design is that the steam lines 12 and 12 ⁇ can be made compact, since the steam in the drive turbine not up

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Control Of Turbines (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

L'invention concerne une installation de production d'électricité (1) comprenant un circuit eau-vapeur (2), au moins un dispositif de préchauffage basse pression (3), un dispositif de génération de vapeur (6), une turbine à vapeur (7), un condenseur (8) et une pompe à eau d'alimentation (9) étant montés dans le circuit eau-vapeur (2), ladite pompe à eau d'alimentation (9) pouvant être entraînée par une turbine d'entraînement de pompe à eau d'alimentation (11) par l'intermédiaire d'un arbre (10). Selon l'invention, une conduite à vapeur (12) sert à relier la turbine d'entraînement de pompe à eau d'alimentation (11) au dispositif de préchauffage basse pression (3), de sorte que la vapeur provenant de la turbine d'entraînement de pompe à eau d'alimentation (11) puisse être introduite dans le dispositif de préchauffage basse pression (3).
PCT/EP2017/062130 2016-07-11 2017-05-19 Installation de production d'électricité à préchauffage optimisé de l'eau d'alimentation pour turbogénérateurs montés à une faible hauteur WO2018010878A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102016212583.4 2016-07-11
DE102016212583 2016-07-11
DE102016214960.1A DE102016214960B3 (de) 2016-07-11 2016-08-11 Kraftwerksanlage mit optimierter Vorwärmung von Speisewasser für tiefaufgestellte Turbosätze
DE102016214960.1 2016-08-11

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WO2018010878A1 true WO2018010878A1 (fr) 2018-01-18

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CN110645061A (zh) * 2019-10-31 2020-01-03 大唐郓城发电有限公司 切除低压加热器的双机回热系统及其一次调频方法
CN111206969A (zh) * 2018-11-21 2020-05-29 赫普科技发展（北京）有限公司 一种火电厂热压机与空分系统结合的系统及控制方法
CN111946412A (zh) * 2020-07-06 2020-11-17 东方电气集团东方汽轮机有限公司 一种带回热系统的背压式汽轮机系统
CN113624027A (zh) * 2021-09-09 2021-11-09 西安热工研究院有限公司 一种降低间接空冷机组夏季运行背压的系统及运行方法
CN114922704A (zh) * 2022-05-18 2022-08-19 西安热工研究院有限公司 一种可低负荷安全运行的汽轮机组发电系统
CN114922706A (zh) * 2022-04-25 2022-08-19 国网河北能源技术服务有限公司 一种抽凝供热机组低压缸零出力运行方式下最小技术出力特性的确定方法

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EP4200521A1 (fr) * 2021-10-19 2023-06-28 Gas Shipping Advisors, S.L. Procédé de conversion d'installations de propulsion à vapeur ou hybride de navire méthanier
CN115506863B (zh) * 2022-10-24 2024-05-07 西安热工研究院有限公司 双旁路高低位布置频率解耦控制的热力系统

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CN111206969A (zh) * 2018-11-21 2020-05-29 赫普科技发展（北京）有限公司 一种火电厂热压机与空分系统结合的系统及控制方法
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CN110645061A (zh) * 2019-10-31 2020-01-03 大唐郓城发电有限公司 切除低压加热器的双机回热系统及其一次调频方法
CN111946412A (zh) * 2020-07-06 2020-11-17 东方电气集团东方汽轮机有限公司 一种带回热系统的背压式汽轮机系统
CN113624027A (zh) * 2021-09-09 2021-11-09 西安热工研究院有限公司 一种降低间接空冷机组夏季运行背压的系统及运行方法
CN114922706A (zh) * 2022-04-25 2022-08-19 国网河北能源技术服务有限公司 一种抽凝供热机组低压缸零出力运行方式下最小技术出力特性的确定方法
CN114922706B (zh) * 2022-04-25 2024-02-13 国网河北能源技术服务有限公司 一种抽凝供热机组低压缸零出力运行方式下最小技术出力特性的确定方法
CN114922704A (zh) * 2022-05-18 2022-08-19 西安热工研究院有限公司 一种可低负荷安全运行的汽轮机组发电系统
CN114922704B (zh) * 2022-05-18 2024-03-26 西安热工研究院有限公司 一种可低负荷安全运行的汽轮机组发电系统

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