EP2952702A1 - Procédé de chauffage ou de maintien à température pour une turbine à vapeur - Google Patents

Procédé de chauffage ou de maintien à température pour une turbine à vapeur Download PDF

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Publication number
EP2952702A1
EP2952702A1 EP14171101.0A EP14171101A EP2952702A1 EP 2952702 A1 EP2952702 A1 EP 2952702A1 EP 14171101 A EP14171101 A EP 14171101A EP 2952702 A1 EP2952702 A1 EP 2952702A1
Authority
EP
European Patent Office
Prior art keywords
pressure stage
steam
final
stage
steam turbine
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.)
Withdrawn
Application number
EP14171101.0A
Other languages
German (de)
English (en)
Inventor
Tobias Hogen
Yevgen Dr. Kostenko
Sebastian Dr. Zahn
Uwe Zander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 AG, Siemens Corp filed Critical Siemens AG
Priority to EP14171101.0A priority Critical patent/EP2952702A1/fr
Priority to RU2016150530A priority patent/RU2650239C1/ru
Priority to CN201580029589.0A priority patent/CN106414912B/zh
Priority to PCT/EP2015/059276 priority patent/WO2015185292A1/fr
Priority to EP15719220.4A priority patent/EP3126641A1/fr
Priority to US15/312,930 priority patent/US10100665B2/en
Priority to JP2016571126A priority patent/JP6339242B2/ja
Priority to KR1020167033544A priority patent/KR101965660B1/ko
Publication of EP2952702A1 publication Critical patent/EP2952702A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/10—Heating, e.g. warming-up before starting
    • 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
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • 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
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F01K13/025—Cooling the interior by injection during idling or stand-by
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/70—Application in combination with
    • F05D2220/74—Application in combination with a gas turbine

Definitions

  • the invention relates to a method for heating or keeping warm a steam turbine, the at least one operating at an initial or intermediate pressure level, at least one at a final pressure level, which is lower than the initial or intermediate pressure level, fluidly downstream of the pressure stage final pressure stage and at least one the final pressure stage has downstream condenser, wherein a steam generated outside the steam turbine is introduced into the pressure stage.
  • the invention further relates to a system for heating or keeping warm a steam turbine, the at least one operating at an initial or intermediate pressure level, at least one at a final pressure level, which is lower than the initial or intermediate pressure level, working fluidly downstream of the pressure stage final pressure stage and has at least one of the final pressure stage downstream capacitor.
  • the invention relates to a power plant, in particular gas-and-steam turbine power plant or steam power plant, with at least one steam turbine.
  • the keeping warm of components of a steam turbine can be done by supplying externally generated steam, for example, auxiliary steam, sealing steam or the like, to the components of the steam turbine.
  • Typical temperatures of the steam used herein may be about 250 ° C to about 300 ° C.
  • the steam can be introduced, for example, in a medium-pressure stage of a multi-stage steam turbine, the steam can expand in the direction of a medium-pressure stage downstream low-pressure stage of the steam turbine.
  • the components of a low pressure stage of a steam turbine are not designed for discharge temperatures of 300 ° C. Therefore, upon initiation of a steam used to warm up or maintain a steam turbine into the low pressure stage, significant limitations to the components of the low pressure stage may arise, which can significantly shorten the life of the low pressure stage.
  • the components of a low-pressure stage can be cooled during warming up of a steam turbine, for example by means of a water injection (so-called hood injection) and / or by means of a two-phase injection.
  • hood injection water injection
  • this is associated with additional costs for cooling.
  • the object of the invention is to enable heating or keeping warm a steam turbine at a lower cost.
  • the steam introduced into the steam turbine or its pressure stage is not passed through the final pressure stage.
  • boundary conditions of the components of the final pressure stage which correspond to the design of the low-pressure stage, are maintained when the steam turbine is warmed up or kept warm. Since the components of the final pressure stage are not subjected to the steam or the associated high temperatures, the life of the components of the final pressure stage is not affected.
  • no cooling of the components of the final pressure stage must be carried out, as described above and conventionally required, so that the warming up or keeping warm of the steam turbine using the method according to the invention can be done more cost-effectively, especially since no cooling system must be used.
  • the final pressure stage is fluidically decoupled from the pressure stage during heating or keeping warm of the steam turbine.
  • the pressure stage may be a medium-pressure stage of a three-stage steam turbine, in which the steam is introduced directly into the medium pressure stage of the steam turbine or at which the steam is introduced into a high-pressure stage upstream of the intermediate-pressure stage of the steam turbine and from there into the medium-pressure stage.
  • the final pressure stage can be designed here as a low-pressure stage of the steam turbine.
  • the pressure stage may be a high-pressure stage of a two-stage steam turbine and the final pressure stage may be a low-pressure stage downstream of the high-pressure stage of the steam turbine.
  • a liquid contained in the vapor can be condensed and fed to a liquid circuit in order to be used again for the production of steam can.
  • the condensed liquid may be otherwise used or removed.
  • the method according to the invention can be used for heating or keeping warm a steam turbine of a steam power plant or a combined cycle power plant.
  • the steam is preferably sucked out of the pressure stage by means of negative pressure after flowing through the pressure stage.
  • This is a simple and effective way to dissipate the vapor from the pressure stage.
  • a suction connection can be arranged at the pressure stage, which is connected in fluid-conducting manner to the condenser.
  • a suction connection can be arranged on an overflow line between the pressure stage and the final pressure stage or on a Zudampfön opening into the final pressure stage.
  • the negative pressure can be generated and adjusted by a suitable means, which is for this purpose respectively activated or activated during the warming or warming of the steam turbine.
  • the vapor is sucked out of the pressure stage by means of at least one blower.
  • a suction side of the blower is in this case facing the pressure stage, while a pressure side of the blower faces the condenser.
  • a throttle valve arranged in an overflow line between the pressure stage and the final pressure stage is closed during the introduction of the steam into the pressure stage. This can prevent the steam from entering the final pressure stage.
  • the effectiveness of a suction of the steam from the pressure stage is increased, since the suction of the vapor, a backflow of fluid is prevented from the final pressure stage.
  • the device may be designed to generate auxiliary steam, sealing steam or the like.
  • the device preferably has at least one means for drawing off the vapor from the pressure stage.
  • the means may be, for example, a fan or blower.
  • the system comprises at least one shut-off device formed by a throttle valve arranged in an overflow line between the pressure stage and the final pressure stage, which can be closed during the introduction of the steam into the pressure stage.
  • the system may include an electronic controller for driving the device, the device, and the shut-off device that controls these components of the system as described above.
  • the power plant according to the invention in particular gas-and-steam turbine power plant or steam power plant, comprises at least one steam turbine and at least one system according to one of the aforementioned embodiments or any combination thereof.
  • gas-and-steam turbine power plant or steam power plant comprises at least one steam turbine and at least one system according to one of the aforementioned embodiments or any combination thereof.
  • the figure shows a schematic representation of an embodiment of an inventive system 1 for heating or keeping warm a three-stage steam turbine 2, which operates at an initial pressure level or high pressure level high-pressure stage 3, operating at an intermediate pressure level or medium pressure level pressure stage 4 or medium pressure stage, one Having a final pressure level or low pressure level, fluidically downstream of the pressure stage 4 final pressure stage 5 and a final pressure stage 5 downstream capacitor 6 has.
  • the high-pressure stage 3, the pressure stage 4 and the final pressure stage 5 are mechanically coupled via a common rotor shaft 7.
  • the system 1 comprises a device 8 for generating a steam and for introducing the steam into the pressure stage 4 or medium pressure stage.
  • the device 8 has for this purpose a steam generating unit 9, which generates the steam as the main product or by-product.
  • the device 8 comprises a feed line 10 which opens in the pressure stage 4 and in which an electrically controllable valve 11 is arranged which is opened to heat or keep the steam turbine 2 warm.
  • the system 1 further comprises a device 12 for discharging the steam after flowing through the pressure stage 4 or medium pressure stage from the pressure stage 4 and for directly feeding the derived from the pressure stage 4 steam bypassing the final pressure stage 5 and low pressure stage to the condenser 6.
  • the device 12 comprises a means 13 in the form of a blower for sucking the steam from the pressure stage 4, which is arranged in a suction line 14 of the device 12.
  • the Suction line 14 starts directly at the pressure stage 4.
  • a dash-dotted suction line 15 may be present, which connects an overflow line 16 between the pressure stage 4 and the final pressure stage 5 fluid-conducting with the condenser 6.
  • a shut-off device 17 formed by a throttle valve is arranged, which is closed during the introduction of the steam into the pressure stage 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Turbines (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP14171101.0A 2014-06-04 2014-06-04 Procédé de chauffage ou de maintien à température pour une turbine à vapeur Withdrawn EP2952702A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP14171101.0A EP2952702A1 (fr) 2014-06-04 2014-06-04 Procédé de chauffage ou de maintien à température pour une turbine à vapeur
RU2016150530A RU2650239C1 (ru) 2014-06-04 2015-04-29 Способ нагрева или сохранения в горячем состоянии паровой турбины
CN201580029589.0A CN106414912B (zh) 2014-06-04 2015-04-29 用于蒸汽轮机的暖机或保温的方法
PCT/EP2015/059276 WO2015185292A1 (fr) 2014-06-04 2015-04-29 Procédé de préchauffage ou de maintien à température d'une turbine à vapeur
EP15719220.4A EP3126641A1 (fr) 2014-06-04 2015-04-29 Procédé de préchauffage ou de maintien à température d'une turbine à vapeur
US15/312,930 US10100665B2 (en) 2014-06-04 2015-04-29 Method for heating up a steam turbine or for keeping a steam turbine hot
JP2016571126A JP6339242B2 (ja) 2014-06-04 2015-04-29 蒸気タービンの暖機又は保温方法
KR1020167033544A KR101965660B1 (ko) 2014-06-04 2015-04-29 증기 터빈의 가열 또는 열 유지 방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14171101.0A EP2952702A1 (fr) 2014-06-04 2014-06-04 Procédé de chauffage ou de maintien à température pour une turbine à vapeur

Publications (1)

Publication Number Publication Date
EP2952702A1 true EP2952702A1 (fr) 2015-12-09

Family

ID=50884741

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14171101.0A Withdrawn EP2952702A1 (fr) 2014-06-04 2014-06-04 Procédé de chauffage ou de maintien à température pour une turbine à vapeur
EP15719220.4A Withdrawn EP3126641A1 (fr) 2014-06-04 2015-04-29 Procédé de préchauffage ou de maintien à température d'une turbine à vapeur

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15719220.4A Withdrawn EP3126641A1 (fr) 2014-06-04 2015-04-29 Procédé de préchauffage ou de maintien à température d'une turbine à vapeur

Country Status (7)

Country Link
US (1) US10100665B2 (fr)
EP (2) EP2952702A1 (fr)
JP (1) JP6339242B2 (fr)
KR (1) KR101965660B1 (fr)
CN (1) CN106414912B (fr)
RU (1) RU2650239C1 (fr)
WO (1) WO2015185292A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111042875A (zh) * 2019-12-13 2020-04-21 上海电气电站设备有限公司 一种汽轮机的暖机方法及暖机系统

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014221563A1 (de) * 2014-10-23 2016-04-28 Siemens Aktiengesellschaft Verfahren zur Verkürzung des Anfahrvorgangs einer Dampfturbine
US12291982B2 (en) 2020-11-30 2025-05-06 Rondo Energy, Inc. Thermal energy storage systems for use in material processing
US12146424B2 (en) 2020-11-30 2024-11-19 Rondo Energy, Inc. Thermal energy storage system coupled with a solid oxide electrolysis system
MA71196B1 (fr) 2020-11-30 2025-04-30 Rondo Energy, Inc. Système et applications de stockage d'énergie
US12018596B2 (en) 2020-11-30 2024-06-25 Rondo Energy, Inc. Thermal energy storage system coupled with thermal power cycle systems
US11913361B2 (en) 2020-11-30 2024-02-27 Rondo Energy, Inc. Energy storage system and alumina calcination applications
US11913362B2 (en) 2020-11-30 2024-02-27 Rondo Energy, Inc. Thermal energy storage system coupled with steam cracking system
US12359591B1 (en) 2020-11-30 2025-07-15 Rondo Energy, Inc. Thermal energy storage systems for repowering existing power plants for improving efficiency and safety
AU2024251596A1 (en) 2023-04-14 2025-11-27 Rondo Energy, Inc. Thermal energy storage systems with improved seismic stability
WO2025226989A2 (fr) 2024-04-24 2025-10-30 Rondo Energy, Inc. Système de stockage d'énergie thermique pour génération d'énergie de cycle simple et combinée
US12566034B1 (en) 2024-07-02 2026-03-03 Rondo Energy, Inc. Thermal energy storage system coupled to a heat exchanger with thermal protection

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Publication number Priority date Publication date Assignee Title
DE607273C (de) 1934-12-20 Siemens Schuckertwerke Akt Ges Einrichtung zur Warmhaltung von Dampfturbinen in Betriebspausen
EP1191192A1 (fr) * 2000-09-26 2002-03-27 Siemens Aktiengesellschaft Procédé et dispositif pour préchauffer et enlever l'eau de conduits de vapeur pour étages de turbines
US6405537B1 (en) * 1996-06-26 2002-06-18 Hitachi, Ltd. Single shaft combined cycle plant and operating thereof
DE102010042405A1 (de) * 2010-10-13 2012-04-19 Robert Bosch Gmbh Vorrichtung und Verfahren zur Abwärmenutzung einer Brennkraftmaschine

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Publication number Priority date Publication date Assignee Title
DE607273C (de) 1934-12-20 Siemens Schuckertwerke Akt Ges Einrichtung zur Warmhaltung von Dampfturbinen in Betriebspausen
US6405537B1 (en) * 1996-06-26 2002-06-18 Hitachi, Ltd. Single shaft combined cycle plant and operating thereof
EP1191192A1 (fr) * 2000-09-26 2002-03-27 Siemens Aktiengesellschaft Procédé et dispositif pour préchauffer et enlever l'eau de conduits de vapeur pour étages de turbines
DE102010042405A1 (de) * 2010-10-13 2012-04-19 Robert Bosch Gmbh Vorrichtung und Verfahren zur Abwärmenutzung einer Brennkraftmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111042875A (zh) * 2019-12-13 2020-04-21 上海电气电站设备有限公司 一种汽轮机的暖机方法及暖机系统
CN111042875B (zh) * 2019-12-13 2023-02-28 上海电气电站设备有限公司 一种汽轮机的暖机方法及暖机系统

Also Published As

Publication number Publication date
WO2015185292A1 (fr) 2015-12-10
KR101965660B1 (ko) 2019-04-04
US10100665B2 (en) 2018-10-16
KR20160147034A (ko) 2016-12-21
CN106414912A (zh) 2017-02-15
JP2017522483A (ja) 2017-08-10
RU2650239C1 (ru) 2018-04-11
EP3126641A1 (fr) 2017-02-08
US20170204741A1 (en) 2017-07-20
JP6339242B2 (ja) 2018-06-06
CN106414912B (zh) 2018-01-26

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