EP1934433A2 - Procede pour chauffer une turbine a vapeur - Google Patents

Procede pour chauffer une turbine a vapeur

Info

Publication number
EP1934433A2
EP1934433A2 EP06794008A EP06794008A EP1934433A2 EP 1934433 A2 EP1934433 A2 EP 1934433A2 EP 06794008 A EP06794008 A EP 06794008A EP 06794008 A EP06794008 A EP 06794008A EP 1934433 A2 EP1934433 A2 EP 1934433A2
Authority
EP
European Patent Office
Prior art keywords
steam
pressure turbine
medium
pressure
turbine section
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Withdrawn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
EP06794008A
Other languages
German (de)
English (en)
Inventor
Edwin Gobrecht
Karsten Peters
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
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Priority to EP06794008A priority Critical patent/EP1934433A2/fr
Publication of EP1934433A2 publication Critical patent/EP1934433A2/fr
Withdrawn legal-status Critical Current

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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • 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
    • 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
    • F01K7/165—Controlling means specially adapted therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Definitions

  • the invention relates to a method for warming a
  • Steam turbine comprising a medium-pressure turbine section and / or low-pressure turbine section, wherein the medium-pressure turbine section has a discharge device on the output side.
  • a steam turbine is also called a turbomachine.
  • Hydraulic turbines, steam and gas turbines, wind turbines, centrifugal pumps and centrifugal compressors as well as propellers are summarized under the collective term turbomachinery. All of these machines have in common that they serve the purpose to withdraw a fluid energy to drive so that another Ma ⁇ machine or vice versa, zuzu ⁇ result, to increase the pressure of a fluid energy.
  • a sub-turbine which is charged on the input side with superheated ⁇ tem steam, which may have temperatures up to 620 0 C and a pressure up to 300 bar.
  • superheated ⁇ tem steam which may have temperatures up to 620 0 C and a pressure up to 300 bar.
  • the above temperature and pressure specifications are merely indicative.
  • Partial turbines, which are designed for higher temperatures and higher pressures, can also be referred to as high-pressure Operatur ⁇ bine.
  • a medium-pressure turbine section is usually subjected to superheated steam having a temperature of 600 0 C and a pressure of about 140 bar.
  • a low-pressure turbine part is usually supplied with the steam flowing out of the medium-pressure turbine section. The effluent from the low-pressure turbine section steam is finally collected in a condenser and converted back into water.
  • the effluent from the high pressure turbine steam is heated in an intermediate superheater and flows into the intermediate-pressure turbine ⁇ .
  • the steam turbines designed to drive the generators can be raised to the rated speeds as quickly as possible.
  • the rated speeds are 50 and 60 Hz. However, other rated speeds are known.
  • the object of the invention is therefore to provide a method by which a steam turbine can be heated quickly.
  • the object is achieved by a method for warming up a steam turbine, comprising an intermediate-pressure turbine and / or low-pressure turbine, the intermediate-pressure turbine on the output side has a storage means, a during a starting through the intermediate-pressure part ⁇ turbine flowing steam is stowed at an exit by means of the storage device such that the pressure of the steam in the medium-pressure turbine section is increased so that the saturation temperature of the steam is raised.
  • the invention is based inter alia on the aspect that by a controlled damming of the vapor stream at the exit the medium-pressure turbine section during startup of the steam turbine, the pressure is increased. For example, by closing a flap, the pressure at the outlet of the medium-pressure turbine section can be raised. Increasing the pressure causes the saturation temperature of the steam to increase.
  • the heat transfer values are particularly high with saturated steam. These heat transfer values are higher than convective warming. Therefore, the temperature of the vapor at a saturation for the heat input into the wave is decisive.
  • the temperature without the inventive damming is about 80 0 C and about 0.5 bar.
  • the storage means for example, 4 bar itself characterized a saturation temperature of the vapor of 144 0 C.
  • the heat transfer to the angeord in the steam turbine ⁇ designated wave is thereby increased, with the result that the wave heats up comparatively quickly.
  • the higher vapor density also accelerates subsequent convective overheating of a medium-pressure turbine shaft.
  • the storage device is arranged in the overflow line.
  • the overflow line is a line which, in terms of flow, connects the output of the medium-pressure turbine section to the input of a low-pressure section turbine.
  • This measure makes it comparatively easy to increase the pressure on the output side of a medium-pressure turbine section.
  • the storage device is designed to be adjustable.
  • the warm-up process of the steam turbine can be regulated.
  • a non-continuous inflow into the intermediate-pressure turbine steam mass flow could be changed by the variable storage means so that the heat input takes place in the thick-walled components of the medium-pressure turbine section ⁇ evenly.
  • the temperature, the pressure and / or the Dampfmassen- Ström could be used as input for a control of the storage device.
  • the storage device is designed as a pivotable flap.
  • the off ⁇ form a pivotable flap is a comparatively inexpensive measure with the desired effect, NaEM ⁇ Lich the damming up of the steam is achieved.
  • the steam on the output side of the medium-pressure turbine part is accumulated to pressure values between 3 and 5 bar and temperature values between 130 0 C and 150 0 C.
  • FIG. 1 is a schematic representation of a medium-pressure turbine part and a low-pressure turbine part.
  • FIG. 1 shows a schematic illustration of a steam turbine 8.
  • a steam turbine can include a high pressure turbine, intermediate-pressure turbine and / or a low-pressure turbine section ⁇ .
  • the illustrated in the figure steam turbine includes a medium-pressure and a low-pressure turbine section.
  • live steam flows into a high-pressure turbine part, not shown in the figure, where it is decompressed and cooled to a lower temperature.
  • the ⁇ ser expanded and cooled steam is heated in a, not shown in the fi gure 1 reheater to a higher temperature, then flows via a line 1 into a medium-pressure turbine. 2
  • the steam flowing into the medium-pressure turbine section 2 relaxes, whereby the pressure and the temperature of the steam decrease.
  • the medium-pressure turbine section 2 On the output side of the medium-pressure turbine section 2, the ent ⁇ spanned steam flows from an outlet 3 via an overflow line 4 in an input 5 of a low-pressure turbine section 6.
  • the medium-pressure 2 and low-pressure part ⁇ turbine 6 shown in Figure 1 are part of a Steam turbine to see. For clarity, the high-pressure turbine section, the reheater, the condenser and various units such. B. a pump not shown in detail.
  • a storage device 7 is arranged.
  • the storage device 7 can be made adjustable and / or as a pivotable flap.
  • the storage device 7 is operated such that the effluent at the outlet 3 steam is dammed in front of the control valve, whereby the pressure of the steam is increased. Since ⁇ is increased, the saturation temperature of the steam which the steam to the medium-pressure turbine shaft of the intermediate-pressure turbine leading to an increase of the temperature transition values by 2.
  • the medium-pressure turbine shaft is not closer Darge ⁇ provides. It has been found that the steam on the output side to values between 3 and 5 bar and 130 0 C to 150 0 C should be accumulated in order to obtain good heat transfer values.
  • the starting process of a steam turbine is shortened by about one hour.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Turbines (AREA)

Abstract

L'invention concerne un procédé pour chauffer une turbine à vapeur (8) dotée d'une turbine moyenne pression (2) et/ou d'une turbine basse pression (4), la turbine moyenne pression (2) comportant côté sortie un dispositif de barrage (7). Pendant le processus de démarrage, la vapeur traversant la turbine moyenne pression (2) est retenue au niveau d'une sortie (3) par un dispositif de barrage (7) de manière à augmenter la pression de la vapeur dans la turbine moyenne pression (2). La retenue de la vapeur sortant de la turbine moyenne pression (2) fait augmenter sa pression et sa température. La transmission thermique de la vapeur aux éléments à parois épaisses de la turbine moyenne pression (2) et à l'arbre de ladite turbine est accrue, diminuant ainsi le temps de démarrage de la turbine.
EP06794008A 2005-10-12 2006-10-11 Procede pour chauffer une turbine a vapeur Withdrawn EP1934433A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06794008A EP1934433A2 (fr) 2005-10-12 2006-10-11 Procede pour chauffer une turbine a vapeur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05022279A EP1775429A1 (fr) 2005-10-12 2005-10-12 Procédé pour chauffer und turbine à vapeur
EP06794008A EP1934433A2 (fr) 2005-10-12 2006-10-11 Procede pour chauffer une turbine a vapeur
PCT/EP2006/067254 WO2007042523A2 (fr) 2005-10-12 2006-10-11 Procede pour chauffer une turbine a vapeur

Publications (1)

Publication Number Publication Date
EP1934433A2 true EP1934433A2 (fr) 2008-06-25

Family

ID=36282973

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05022279A Withdrawn EP1775429A1 (fr) 2005-10-12 2005-10-12 Procédé pour chauffer und turbine à vapeur
EP06794008A Withdrawn EP1934433A2 (fr) 2005-10-12 2006-10-11 Procede pour chauffer une turbine a vapeur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05022279A Withdrawn EP1775429A1 (fr) 2005-10-12 2005-10-12 Procédé pour chauffer und turbine à vapeur

Country Status (10)

Country Link
US (1) US20090288415A1 (fr)
EP (2) EP1775429A1 (fr)
JP (1) JP2009511812A (fr)
KR (1) KR20080054439A (fr)
CN (1) CN101351621B (fr)
BR (1) BRPI0617303A2 (fr)
CA (1) CA2625470A1 (fr)
RU (1) RU2392452C2 (fr)
TW (1) TW200734528A (fr)
WO (1) WO2007042523A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2743247T3 (es) * 2010-01-12 2020-02-18 Siemens Ag Turbina con sistema de calefacción, y central de energía solar correspondiente y procedimiento de funcionamiento
DE102013205979A1 (de) 2013-04-04 2014-10-09 Siemens Aktiengesellschaft Optimierung von Kaltstarts bei thermischen Kraftwerken, insbesondere bei Dampfturbinen- oder bei Gas-und-Dampfturbinenkraftwerken (GuD-Kraftwerke)
EP3249183A1 (fr) * 2016-05-23 2017-11-29 Siemens Aktiengesellschaft Procédé destiné au chauffage d'une soupape
US10577962B2 (en) 2016-09-07 2020-03-03 General Electric Company Turbomachine temperature control system

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US1499697A (en) * 1919-11-01 1924-07-01 Vaporackumulator Ab Steam-accumulator apparatus for steam plants
US1923251A (en) * 1931-05-22 1933-08-22 Bauer Gustav Gas or steam turbine casing
US2874711A (en) * 1953-02-04 1959-02-24 Rateau Soc Control of high-power turbines
DE1228623B (de) * 1963-07-23 1966-11-17 Sulzer Ag Dampfkraftanlage mit Zwanglaufdampferzeuger und Zwischenueberhitzer
US3375665A (en) * 1964-06-24 1968-04-02 Georg Gyarmathy Method and arrangement for utilizing steam power in steam power plants
DE2029830C3 (de) * 1970-06-18 1974-04-11 Steag Ag, 4300 Essen Verfahren zum Anwärmen der Frischdampfleitung und der Zwischenüberhitzerleitung von Dampfturbinenanlagen
CH635401A5 (de) * 1978-08-31 1983-03-31 Bbc Brown Boveri & Cie Sperrdampfvorrichtung und verwendung desselben.
DE3137379C2 (de) * 1980-12-23 1985-11-14 Saarbergwerke AG, 6600 Saarbrücken Verfahren zur Versorgung von Fernwärmenetzen mit Wärme uns einem Wärmekraftwerk
JPS5810104A (ja) * 1981-07-10 1983-01-20 Hitachi Ltd タ−ビンプラントおよびその制御方法
DE3408937A1 (de) * 1984-01-31 1985-08-08 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Kombinierte gas-/dampf-kraftwerkanlage
FR2560636B1 (fr) * 1984-03-01 1988-07-08 Alsthom Atlantique Corps de turbine pour chauffage urbain
JPS61237802A (ja) * 1985-04-12 1986-10-23 Hitachi Ltd 蒸気タ−ビンの暖機方法
JP2633720B2 (ja) * 1990-10-12 1997-07-23 株式会社東芝 蒸気タービンのプレウォーミング方法
DE19506787B4 (de) * 1995-02-27 2004-05-06 Alstom Verfahren zum Betrieb einer Dampfturbine
EP0853214B1 (fr) * 1997-01-10 2004-03-10 Framatome ANP GmbH Procédé et appareil pour surchauffer de la vapeur
DE19808596A1 (de) * 1998-02-28 1999-09-02 Babcock Kraftwerksrohrleitungs Verfahren und Vorrichtung zum Anwärmen und Entwässern einer Hochdruckdampfleitung
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
JP2002341947A (ja) * 2001-05-21 2002-11-29 Mitsubishi Heavy Ind Ltd 圧力流量制御装置
JP4363955B2 (ja) * 2003-10-27 2009-11-11 株式会社東芝 バタフライ弁型蒸気弁及びそれを用いた蒸気タービンプラント
JP2005226500A (ja) * 2004-02-10 2005-08-25 Chugoku Electric Power Co Inc:The 発電プラントの停止方法
EP1775431A1 (fr) * 2005-10-12 2007-04-18 Siemens Aktiengesellschaft Procédé pour chauffer und turbine à vapeur

Non-Patent Citations (1)

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Title
See references of WO2007042523A2 *

Also Published As

Publication number Publication date
WO2007042523A2 (fr) 2007-04-19
WO2007042523A3 (fr) 2007-09-13
RU2392452C2 (ru) 2010-06-20
KR20080054439A (ko) 2008-06-17
CA2625470A1 (fr) 2007-04-19
BRPI0617303A2 (pt) 2011-07-19
TW200734528A (en) 2007-09-16
CN101351621A (zh) 2009-01-21
US20090288415A1 (en) 2009-11-26
EP1775429A1 (fr) 2007-04-18
JP2009511812A (ja) 2009-03-19
RU2008118368A (ru) 2009-11-20
CN101351621B (zh) 2012-12-05

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