EP2396514A1 - Procédé de réchauffement d'un arbre de turbine - Google Patents

Procédé de réchauffement d'un arbre de turbine

Info

Publication number
EP2396514A1
EP2396514A1 EP10702463A EP10702463A EP2396514A1 EP 2396514 A1 EP2396514 A1 EP 2396514A1 EP 10702463 A EP10702463 A EP 10702463A EP 10702463 A EP10702463 A EP 10702463A EP 2396514 A1 EP2396514 A1 EP 2396514A1
Authority
EP
European Patent Office
Prior art keywords
turbine shaft
water
turbine
steam
injection
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.)
Granted
Application number
EP10702463A
Other languages
German (de)
English (en)
Other versions
EP2396514B1 (fr
Inventor
Matthias Heue
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 EP10702463.0A priority Critical patent/EP2396514B1/fr
Publication of EP2396514A1 publication Critical patent/EP2396514A1/fr
Application granted granted Critical
Publication of EP2396514B1 publication Critical patent/EP2396514B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
    • 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
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means
    • 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
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/232—Heat transfer, e.g. cooling characterized by the cooling medium
    • F05D2260/2322—Heat transfer, e.g. cooling characterized by the cooling medium steam
    • 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
    • F05D2260/00—Function
    • F05D2260/85—Starting

Definitions

  • the invention relates to a method for heating a turbine shaft and a steam turbine comprising a turbine shaft and a device for heating the turbine shaft.
  • a starting method for starting the steam turbine is started.
  • live steam valves are more or less opened.
  • the values for the starting temperature, the starting pressure and the starting quality of the steam are selected such that after startup of the steam turbine an idling operation or a load operation with a low load for the steam turbine can be realized.
  • Machine condition are reached by the application of hot steam regularly high material loads by the thermal expansion stresses occurring. Due to the liberalization of the energy market, it is currently common practice to decommission steam turbine plants over a longer period of time. These include short-term shutdowns or daily start / stop modes and weekend shutdowns.
  • the invention begins, whose task is to provide a method and a steam turbine, which can be heated quickly.
  • This object is achieved by a method for heating a turbine shaft, wherein the turbine shaft is heated by water injection.
  • the task directed towards the steam turbine is achieved by a steam turbine comprising a turbine shaft and a device for injecting water onto the turbine shaft.
  • the turbine shaft is a large component with a high mass and thus a comparatively high heat capacity. This leads to the fact that the turbine shaft is heated comparatively slowly with an energy supply.
  • An essential idea of the invention is to heat the turbine shaft faster by spraying warm water onto the turbine shaft. By this water injection takes place a rapid heat transfer of the warm water to the turbine shaft.
  • the term water is here understood to mean liquid in its state of aggregation.
  • the turbine shaft is sprayed with water until a maximum Anürmformatiere is reached.
  • the maximum heating speed hereby reaches values between 8 Hz and 25 Hz. Since there is a permanent transfer of heat to the turbine shaft via the injection of water, it is advantageous that the water is continuously injected onto the turbine shaft until the turbine shaft reaches the maximum heating speed during the warm-up process has reached. The start-up time is thereby further shortened.
  • the warm water is taken from a preheating or from a feed pump to ensure the required steam purity, z. B. from a parallel vapor source.
  • a steam circuit is generally present in such a way that water is available from the preheating section or from the feed pump.
  • the water from the preheat section is opposite the water from the pump so that it has a higher temperature, the pressure in the turbine is of crucial importance.
  • injection nozzles are arranged within the steam turbine, via which the warm water is sprayed onto the turbine shaft.
  • Figure 1 is a schematic representation of a water injection on a turbine shaft.
  • the turbine shaft 1 shows a schematic representation of a turbine shaft 1, which is designed to be double-flow.
  • the turbine shaft 1 comprises a left-hand flood 2 and a right-hand flood 3.
  • the turbine shaft 1 rotates about the rotation axis 4.
  • live steam flows into the steam turbine via an inflow region (not shown) and relaxes along the left-hand flood 2 and the right-hand side Flood 3.
  • the turbine shaft 1 includes blades not shown in detail.
  • the turbine shaft 1 can heat to above 300 0 C. The temperatures can even reach values up to 630 0 C. After a standstill, the temperature of the turbine shaft 1 may be less than 100 0 C.
  • the warm water 5 may have temperatures between 100 0 C and 350 0 C.
  • the water is passed through a valve 7 to the injection nozzle 6. With the valve 7, the amount of water that leads through a line 8 to the injection nozzle 6, are regulated.
  • the turbine shaft 1 is hereby heated by the water injection before the abutment. This means that the turbine shaft 1 is already sprayed with water during the turn operation, ie an externally supplied rotational movement via a motor. Care must be taken here, however, that the amount of water 5 injected from the injection nozzle 6 is constant over the surface of the turbine nozzle. wave 1, otherwise local tensions may arise. Furthermore, the turbine shaft 1 is sprayed so long by means of the injection nozzles 6 with warm water 5 until a maximum Anürmformatiere is reached. The heating speed assumes values between 8 Hz and 25 Hz.
  • the valve 7 is fluidically coupled to a line 9, wherein the line 9 is fluidly coupled in a manner not shown on a preheating or at a feed pump.
  • the turbine shaft 1 is part of a steam turbine, not shown.
  • This steam turbine comprises a housing, wherein the injection nozzles 6 are arranged for injecting the water 5 within the housing.
  • the position of the injectors 6 and the flow rate of hot water 5 should be selected appropriately so that the heat transfer coefficient is optimal.
  • the steam turbine housing drainages which are designed such that in the housing located water can flow. These drain casings are opened during the heating process so that the water can drain off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne un procédé de réchauffement d'un arbre de turbine (1). L'arbre de turbine (1) est réchauffé par projection d'eau chaude (5) provenant d'une pompe d'alimentation ou d'un parcours de préchauffage. L'invention concerne en outre une turbine à vapeur comprenant un carter. Des buses de projection (6) sont installées dans le carter pour la projection de l'eau (5).
EP10702463.0A 2009-02-10 2010-01-25 Procédé de chauffage d'un arbre de turbine Not-in-force EP2396514B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10702463.0A EP2396514B1 (fr) 2009-02-10 2010-01-25 Procédé de chauffage d'un arbre de turbine

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09001828A EP2216506A1 (fr) 2009-02-10 2009-02-10 Procédé de chauffage d'un arbre de turbine
PCT/EP2010/050800 WO2010091942A1 (fr) 2009-02-10 2010-01-25 Procédé de réchauffement d'un arbre de turbine
EP10702463.0A EP2396514B1 (fr) 2009-02-10 2010-01-25 Procédé de chauffage d'un arbre de turbine

Publications (2)

Publication Number Publication Date
EP2396514A1 true EP2396514A1 (fr) 2011-12-21
EP2396514B1 EP2396514B1 (fr) 2014-03-05

Family

ID=41053762

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09001828A Withdrawn EP2216506A1 (fr) 2009-02-10 2009-02-10 Procédé de chauffage d'un arbre de turbine
EP10702463.0A Not-in-force EP2396514B1 (fr) 2009-02-10 2010-01-25 Procédé de chauffage d'un arbre de turbine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09001828A Withdrawn EP2216506A1 (fr) 2009-02-10 2009-02-10 Procédé de chauffage d'un arbre de turbine

Country Status (5)

Country Link
US (1) US20110308251A1 (fr)
EP (2) EP2216506A1 (fr)
JP (1) JP2012517550A (fr)
CN (1) CN102317576A (fr)
WO (1) WO2010091942A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9359898B2 (en) 2012-04-19 2016-06-07 General Electric Company Systems for heating rotor disks in a turbomachine
FR3007459B1 (fr) * 2013-06-19 2016-10-14 Airbus Operations Sas Systeme et procede de mise en rotation d'un element rotatif d'un dispositif mecanique, en particulier d'une turbomachine.
JP6479386B2 (ja) * 2014-09-26 2019-03-06 株式会社東芝 蒸気タービン
EP3029280B1 (fr) 2014-12-04 2023-02-08 General Electric Technology GmbH Procédé de démarrage d'une turbine à vapeur

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1230325A (fr) * 1969-03-05 1971-04-28
US4055048A (en) * 1976-08-20 1977-10-25 Reed Charles W Apparatus and method for side stream demineralization of condensate in a steam cycle
JPS5912105A (ja) * 1982-07-12 1984-01-21 Fuji Electric Co Ltd 再熱復水式蒸気タ−ビンの起動方式
JPS61237802A (ja) * 1985-04-12 1986-10-23 Hitachi Ltd 蒸気タ−ビンの暖機方法
JPS6267206A (ja) * 1985-09-20 1987-03-26 Hitachi Ltd 中圧タ−ビン暖機装置
JPS62159704A (ja) * 1986-01-09 1987-07-15 Mitsubishi Heavy Ind Ltd 蒸気タ−ビンの暖機方法
JPS63270410A (ja) * 1987-04-28 1988-11-08 Nkk Corp 低温物体の加熱方法
US5172553A (en) * 1992-01-21 1992-12-22 Westinghouse Electric Corp. Convective, temperature-equalizing system for minimizing cover-to-base turbine casing temperature differentials
US5433079A (en) * 1994-03-08 1995-07-18 General Electric Company Automated steam turbine startup method and apparatus therefor
US5498131A (en) * 1995-03-02 1996-03-12 General Electric Company Steam turbine with thermal stress reduction system
JPH09177755A (ja) * 1995-12-28 1997-07-11 Toshiba Corp 蒸気タービンのロータ加熱装置
JPH11190205A (ja) * 1997-12-25 1999-07-13 Mitsubishi Heavy Ind Ltd ロータ熱的安定性試験方法
US6311704B1 (en) * 2000-03-03 2001-11-06 Hydrochem Industrial Services Methods and apparatus for chemically cleaning turbines
JP2003035108A (ja) * 2001-07-24 2003-02-07 Fuji Electric Co Ltd 軸流排気式蒸気タービン
JP4723884B2 (ja) * 2005-03-16 2011-07-13 株式会社東芝 タービン起動制御装置およびその起動制御方法
EP1707739A1 (fr) * 2005-03-24 2006-10-04 Siemens Aktiengesellschaft Turbine à vapeur avec arbre creux refroidi et méthode de refroidissement correspondante

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010091942A1 *

Also Published As

Publication number Publication date
JP2012517550A (ja) 2012-08-02
US20110308251A1 (en) 2011-12-22
WO2010091942A1 (fr) 2010-08-19
EP2396514B1 (fr) 2014-03-05
EP2216506A1 (fr) 2010-08-11
CN102317576A (zh) 2012-01-11

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