WO2023169726A1 - Installation de turbine à vapeur - Google Patents

Installation de turbine à vapeur Download PDF

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Publication number
WO2023169726A1
WO2023169726A1 PCT/EP2023/051426 EP2023051426W WO2023169726A1 WO 2023169726 A1 WO2023169726 A1 WO 2023169726A1 EP 2023051426 W EP2023051426 W EP 2023051426W WO 2023169726 A1 WO2023169726 A1 WO 2023169726A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam
turbine
primary
source
partial
Prior art date
Application number
PCT/EP2023/051426
Other languages
German (de)
English (en)
Inventor
Ingo Assmann
Tobias Florian BURGARD
Jörg Eppendorfer
Andreas Schulze
Ingo Stephan
Original Assignee
Siemens Energy Global GmbH & Co. KG
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 Energy Global GmbH & Co. KG filed Critical Siemens Energy Global GmbH & Co. KG
Publication of WO2023169726A1 publication Critical patent/WO2023169726A1/fr

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
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/005—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for the working fluid being steam, created by combustion of hydrogen with oxygen
    • 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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
    • F01K7/226—Inter-stage steam injection
    • 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
    • F01K7/24—Control or safety means specially adapted therefor

Definitions

  • Steam turbine system The invention relates to a steam turbine system according to claim 1.
  • certain (optimal) steam parameters In order to be able to operate a steam turbine system at the optimal operating point, certain (optimal) steam parameters must be maintained, in particular with regard to the mass flow, pressure, moisture and/or temperature.
  • process steam is used to operate the steam turbine system or if the steam for operating the steam turbine system is provided from renewable energy sources, the steam parameters can be subject to strong fluctuations. In these cases, the steam parameters must be brought to the required values before entering the steam turbine or along the expansion section, otherwise a drop in efficiency or damage to the steam turbine can occur.
  • An unpublished application by the applicant therefore provides for the use of a secondary steam source to generate a secondary steam if necessary, which if the primary steam falls below or exceeds predetermined limit values for individual or several steam parameters (in particular mass flow, pressure, temperature and/or moisture). , is added to the primary steam, so that a total steam that can be generated from primary steam and secondary steam is created, which has steam parameters that lie in a predeterminable range with regard to its steam parameters.
  • the secondary steam is generated by means of a secondary steam source, which causes hydrogen and oxygen to react with one another within a defined area or component, for example a combustion chamber, to generate steam. By burning oxygen with hydrogen, large amounts of water vapor with high steam parameters (especially high temperature and little or no moisture) can be produced within a very short time.
  • the steam turbine system comprises at least one water-steam circuit, in which a steam turbine with at least a first and a second partial turbine is arranged.
  • the first partial turbine and the second partial turbine can be connected via at least one first switchable clutch.
  • the water-steam circuit comprises a first primary steam source and a second secondary steam source, wherein the first sub-turbine can be supplied with a primary steam from the primary steam source and the second sub-turbine can be supplied with the primary steam from the primary steam source or a part thereof and/or a secondary steam (or a part thereof) of the secondary steam source can be acted upon and the secondary steam can be generated by means of a steam generator, which is part of the secondary steam source, with hydrogen and oxygen being reacted with one another to generate steam.
  • primary steam refers to the steam that comes from the primary steam source; this can also be partially expanded steam or part of the original steam generated by the primary steam source.
  • a partial turbine consists of at least one turbine housing.
  • the combination of at least two partial turbines, which can be connected via a switchable clutch, and a secondary steam source, which can generate steam using hydrogen and oxygen, results in a highly flexible steam turbine system that can adapt to rapidly changing conditions both in terms of steam provision and the - can be adapted to drive-side requirements (electrical energy or drive power of a connected consumer).
  • the first sub-turbine can be operated individually or together with the second sub-turbine, provided there is sufficient primary steam with the corresponding steam parameters, without additional secondary steam. If the steam parameters of the primary steam are insufficient, the second partial turbine can be operated with a mixture of primary steam and secondary steam or only with secondary steam.
  • the steam turbine system according to the invention is therefore flexible, with the individual operating modes being able to be set and varied quickly due to the coupling and the short-term available secondary steam.
  • An embodiment of the invention provides that a second switchable clutch is arranged between the first and the second partial turbine, which can be actuated independently of the first switchable clutch, and a generator or a machine is arranged between the first and the second switchable clutch Depending on the switching position of the first or second switchable clutch, it can be connected to the first and/or the second partial turbine.
  • the second switchable clutch thus further increases the flexibility of the steam turbine system according to the invention compared to the first embodiment.
  • FIG. 1 The basic structure of a first exemplary embodiment of a steam turbine system according to the invention with a switchable clutch.
  • Fig. 2 A first operating mode of the steam turbine system shown in Fig. 1.
  • Fig. 3 A second operating mode of the steam turbine system shown in Fig. 1.
  • Fig. 4 A third operating mode of the steam turbine system shown in Fig. 1.
  • Fig. 5 A fourth operating mode of the steam turbine system shown in Fig. 1.
  • Fig. 6 The basic structure of a second exemplary embodiment of a steam turbine system according to the invention with two switchable clutches.
  • Fig. 7 A first operating mode of the steam turbine system shown in Fig. 6.
  • Fig. 8 A second operating mode of the steam turbine system shown in Fig. 6.
  • Fig. 7 A first operating mode of the steam turbine system shown in Fig. 6.
  • Fig. 8 A second operating mode of the steam turbine system shown in Fig. 6.
  • Fig. 7 A first operating mode of the steam turbine system shown in Fig. 6.
  • FIGS. 1 and 6 each show a steam turbine system according to the invention, FIGS.
  • FIG. 1 shows the basic structure of a first exemplary embodiment of a steam turbine system according to the invention.
  • the steam turbine system includes a water-steam circuit 1 in which a steam turbine 2 is arranged.
  • the steam turbine 2 includes a first partial turbine 2' and a second partial turbine 2''.
  • the two partial turbines 2', 2'' are connected in series and can be connected via a switchable clutch 3, so that they can drive a common output shaft 8 when the clutch 3 is closed.
  • the steam turbine system further includes a primary steam source 4.
  • the primary steam provided by the primary steam source 4 can have fluctuating steam parameters, which can prevent continuous operation of the steam turbine system, or at least the operation of the steam turbine system at an optimal operating point.
  • the primary steam source 4 can be, for example, a waste-to-energy plant or a regenerative power plant (eg solar thermal power plant).
  • a secondary steam source 5 is provided in order to ensure continuous operation of the steam turbine system, or to adapt the steam parameters of the steam upstream and/or along the expansion section.
  • the secondary steam source 5 obtains its steam by causing hydrogen and oxygen to react with each other in a controlled manner. Large ones can be used Achieve quantities of water vapor with high steam temperatures.
  • the primary and secondary steam sources 4.5 are arranged within the water-steam circuit 1 in such a way that the first partial turbine 2' with the primary steam from the primary steam source 4 and the second partial turbine 2'' with the primary steam from the primary steam source 4, which already partially expanded primary steam (after expansion in partial turbine 2 ') and / or a part of it and / or a secondary mass flow of the secondary steam source 5 can be applied.
  • Which operating mode is used essentially depends on the steam parameters, in particular the mass flow, the pressure, the moisture and/or the temperature of the primary steam.
  • the optimal operating mode can be set by preferably continuously collecting the required measurement data and comparing them with the target values, for example using appropriate characteristic maps.
  • FIGS. 2 to 5 show Various operating modes below in FIGS. 2 to 5, which can be operated with the steam turbine system according to FIG. 1.
  • FIG. 2 shows a first operating mode of the steam turbine system shown in FIG. 1.
  • the steam turbine system is operated exclusively with primary steam, which is provided by the primary steam source 4.
  • a typical application would be that there is enough primary steam available with steam parameters that enable the steam turbine system to be operated at an optimal operating point. In such a case, adding secondary steam can be omitted.
  • the primary steam provided by the primary steam source 4 is first supplied to the steam inlet 9 of the first partial turbine 2' and the primary steam is first expanded before the partially expanded primary steam leaves the first partial turbine 2' via the steam outlet 10 and via corresponding ones Lines of the water-steam circuit 1 to the steam inlet 11 of the second Sub-turbine 2'' is supplied, expanded further there and the second sub-turbine 2'' leaves via the steam outlet 12.
  • the switchable clutch 3 is closed so that the entire power provided by the partial turbines 2', 2'' can be transmitted to the common output shaft 8.
  • FIG. 3 shows a second operating mode of the steam turbine system shown in FIG. 1.
  • the steam turbine system is operated exclusively with secondary steam, which is provided by the secondary steam source 5.
  • FIG. 4 shows a third operating mode of the steam turbine system shown in FIG. 1.
  • the steam turbine system is operated with primary steam, to which secondary steam is added during the expansion phase.
  • a typical application would be, for example, if the steam parameters of the primary steam are still within the permissible limits at the beginning of the expansion phase, but fall below and/or exceed the operating ranges during the expansion, for example if the temperature at the steam outlet 10 from the first partial turbine 2' is too low.
  • the primary steam provided by the primary steam source 4 is first fed to the steam inlet 9 of the first partial turbine 2' and it takes place a first expansion of the primary steam.
  • the partially expanded primary steam leaves the first partial turbine 2' via the steam outlet 10 and is then fed to the steam inlet 11 of the second partial turbine 2'' via corresponding lines of the water-steam circuit 1.
  • secondary steam is added to the partially expanded primary steam, which is provided by the secondary steam source 5.
  • the steam parameters of the added secondary steam depend on the steam parameters of the partially expanded primary steam downstream of the steam outlet 10 (which can also be determined indirectly from the power and/or speed as well as other steam parameters along the expansion section).
  • the required variables are measured using appropriate sensors and a downstream control unit uses the measured variables to determine the steam parameters of the secondary steam to be added in order to achieve a total steam whose steam parameters are within permissible and specified limits.
  • the measuring and control unit is not explicitly shown in any of the figures.
  • the total steam formed from partially expanded primary steam and secondary steam is fed to the second partial turbine 2" via the steam inlet 11, expanded and discharged from the second partial turbine 2" via the steam outlet 12.
  • the clutch 3 is engaged in this operating mode, so that both partial turbines 2', 2'' can transmit work to the output shaft 8.
  • 5 shows a fourth operating mode of the steam turbine system shown in FIG. 1.
  • the steam turbine system is operated with primary steam and secondary steam, whereby the first partial turbine 2' is not supplied with steam and does not perform any work.
  • the primary steam, which is provided by the primary steam source 4 is mixed with secondary steam, which is provided by the secondary steam source 5, before entering the second partial turbine 2'' is mixed.
  • FIG. 6 shows the basic structure of a second exemplary embodiment of a steam turbine system according to the invention.
  • each partial turbine has its own output shaft 8', 8'' which is connected to a generator or a machine to be driven by switchable clutches 3', 3'' 7 can be connected.
  • each output shaft 8', 8'' is connected to a switchable clutch 3', 3'', via which the respective output shaft 8', 8'' is connected to a generator or arranged between the two output shafts 8', 8'' arranged work machine 7 can be connected.
  • both output shafts 8 ⁇ , 8 ⁇ ⁇ can perform work at different speeds.
  • the remaining structure and the components used of the steam turbine system are essentially identical to the structure according to FIG. 1, the description of which is referred to.
  • the previously described operating modes 1-4 can be carried out with the steam turbine system according to FIG. 6, with either the first, the second or both partial turbines 2', 2'' driving the generator or the work machine 7, depending on the operating mode.
  • FIG. 7 shows a first operating mode of a steam turbine system according to the invention according to FIG. 6, analogous to the first operation.
  • the operation of the steam turbine system takes place exclusively with primary steam, which is provided by the primary steam source 4 and subsequently expanded first in the first partial turbine 2' and then in the second partial turbine 2'' becomes.
  • the two clutches 3' and 3'' are engaged, so that the work done by the two partial turbines 2', 2'' can be transmitted to the generator 7 via the respective output shaft 8', 8''.
  • 8 shows a second operating mode of a steam turbine system according to the invention according to FIG. 6, analogous to the second operating mode of the steam turbine system according to the invention according to FIG is provided.
  • the secondary steam is expanded by means of the second partial turbine 2'' and the work done is transmitted to the generator 7 via the second output shaft 8''.
  • the second clutch 3'' is engaged. In this mode, the first partial turbine 2' is not supplied with steam and therefore does not perform any work.
  • the first clutch 3' is not engaged and thus decouples the first partial turbine 2' from the generator 7 and thus also from the second partial turbine 2''.
  • 9 shows a third operating mode of a steam turbine system according to the invention according to FIG. 6, analogous to the third operating mode of the steam turbine system according to the invention according to FIG. Pansion phase secondary steam is added to the secondary steam source 5 in order to adjust the steam parameters.
  • this operating mode there is both the first te as well as the second clutch 3', 3'' engage to transfer the work done during the expansion of the steam in the respective partial turbines 2', 2'' to the generator 7 via the respective output shafts 8', 8'' transmitted.
  • FIG. 10 shows a fourth operating mode of a steam turbine system according to the invention according to FIG. 6, analogous to the fourth operating mode of the steam turbine system according to the invention according to FIG. and is mixed with secondary steam, which is provided by the secondary steam source 5, before entering the second partial turbine 2''.
  • the second clutch 3'' is engaged in order to transmit the work done during the expansion of the total steam mass flow in the second partial turbine 2'' to the generator 7 via the second output shaft 8''.
  • the first partial turbine 2' is not supplied with primary steam and does not perform any work in this operating mode; As a result, the first clutch 3' is not engaged.
  • the first output shaft 8' is thereby decoupled from the generator 7.
  • 11 shows a fifth operating mode of a steam turbine system according to the invention according to FIG.
  • the steam turbine system is operated exclusively with primary steam, which is provided by the primary steam source 4 and exclusively in the first partial turbine 2 ' is relaxed.
  • the work done is transferred to the generator 7 via the first output shaft 8'.
  • the first clutch 3' is brought into engagement.
  • the second partial turbine 2'' does not perform any work and as a result the second clutch 3'' is not engaged.
  • the second output shaft 8'' is thereby decoupled from the generator 7.

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

Abstract

L'invention concerne une installation de turbine à vapeur comprenant un circuit eau-vapeur (1). Le circuit eau-vapeur (1) comprend au moins une turbine à vapeur (2) dotée d'une première et d'une seconde turbine auxiliaire (2', 2"). La première turbine auxiliaire (2') peut être reliée directement ou indirectement à la seconde turbine auxiliaire (2") par l'intermédiaire d'au moins un premier accouplement commutable (3). Le circuit eau-vapeur (1) comprend en outre une première source de vapeur primaire (4) et une seconde source de vapeur secondaire (5), la première turbine auxiliaire (2') pouvant être alimentée avec une vapeur primaire de la source de vapeur primaire (4), et la seconde turbine auxiliaire (2") pouvant être alimentée avec la vapeur primaire de la source de vapeur primaire (4) ou une partie de celle-ci et/ou une vapeur secondaire de la source de vapeur secondaire (5). La vapeur secondaire peut être générée au moyen d'un générateur de vapeur qui, en tant que partie de la source de vapeur secondaire (5), fait réagir l'hydrogène et l'oxygène ensemble afin de générer de la vapeur.
PCT/EP2023/051426 2022-03-07 2023-01-20 Installation de turbine à vapeur WO2023169726A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022202265.3 2022-03-07
DE102022202265.3A DE102022202265A1 (de) 2022-03-07 2022-03-07 Dampfturbinenanlage

Publications (1)

Publication Number Publication Date
WO2023169726A1 true WO2023169726A1 (fr) 2023-09-14

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ID=85036926

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/051426 WO2023169726A1 (fr) 2022-03-07 2023-01-20 Installation de turbine à vapeur

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DE (1) DE102022202265A1 (fr)
WO (1) WO2023169726A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB754213A (en) * 1953-01-27 1956-08-08 Sulzer Ag Steam power plants
US3276203A (en) * 1966-10-04 Top heat power cycle
EP1744032A1 (fr) * 2005-07-15 2007-01-17 Siemens Aktiengesellschaft Installation combinée de turbines à gaz et à vapeur et son procédé de fonctionnement
US20170037908A1 (en) * 2014-04-15 2017-02-09 Siemens Aktiengesellschaft Coupling device for connecting a clutch to a turbine train
US20190284963A1 (en) * 2018-03-16 2019-09-19 Kabushiki Kaisha Toshiba Plant control apparatus, plant control method and power plant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021151605A1 (fr) 2020-01-29 2021-08-05 Siemens Aktiengesellschaft Installation comprenant un module auxiliaire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276203A (en) * 1966-10-04 Top heat power cycle
GB754213A (en) * 1953-01-27 1956-08-08 Sulzer Ag Steam power plants
EP1744032A1 (fr) * 2005-07-15 2007-01-17 Siemens Aktiengesellschaft Installation combinée de turbines à gaz et à vapeur et son procédé de fonctionnement
US20170037908A1 (en) * 2014-04-15 2017-02-09 Siemens Aktiengesellschaft Coupling device for connecting a clutch to a turbine train
US20190284963A1 (en) * 2018-03-16 2019-09-19 Kabushiki Kaisha Toshiba Plant control apparatus, plant control method and power plant

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Publication number Publication date
DE102022202265A1 (de) 2023-09-07

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