EP3219939A1 - Verfahren zum betreiben einer dampfturbine - Google Patents

Verfahren zum betreiben einer dampfturbine Download PDF

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Publication number
EP3219939A1
EP3219939A1 EP16190272.1A EP16190272A EP3219939A1 EP 3219939 A1 EP3219939 A1 EP 3219939A1 EP 16190272 A EP16190272 A EP 16190272A EP 3219939 A1 EP3219939 A1 EP 3219939A1
Authority
EP
European Patent Office
Prior art keywords
steam
steam turbine
actual
abdampfdruck
pressure
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Withdrawn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
EP16190272.1A
Other languages
German (de)
English (en)
Inventor
Lange Holger
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.)
Everllence SE
Original Assignee
MAN Diesel and Turbo SE
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 MAN Diesel and Turbo SE filed Critical MAN Diesel and Turbo SE
Publication of EP3219939A1 publication Critical patent/EP3219939A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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

Definitions

  • the invention relates to a method for operating a steam turbine.
  • a steam turbine is supplied from a steam source steam for relaxation, wherein energy obtained in the relaxation of the steam is converted into mechanical energy, and wherein the steam turbine leaving exhaust steam can be fed to a downstream process as process steam.
  • process steam can be used, for example, in the papermaking or chemical industries.
  • a protective shutdown is performed for the steam turbine to avoid damage to the steam turbine, in particular blade damage to the steam turbine.
  • the present invention has the object to provide a novel method for operating a steam turbine.
  • This object is achieved by a method according to claim 1.
  • the auxiliary control valve in particular the bypass valve of the steam turbine bypass, controlled to control the actual Abdampf réelles to the SollAbdampftik, whereas the control valve of the steam turbine is driven to a Adjust steam mass flow through the steam turbine.
  • the limit with the reaching or falling below the control valve of the steam turbine is used to adjust the steam mass flow through the steam turbine, has a defined distance to the Abdampftik, at which the protective shutdown of the steam turbine would take place.
  • auxiliary control valve in particular the bypass valve of the steam turbine bypass, used according to the invention for controlling the actual Abdampfdrucks to the desired Abdampftik.
  • the control valve of the steam turbine then serves to adjust the steam mass flow, in particular the steam mass flow, through the steam turbine. In this way, a protective shutdown of the steam turbine can be avoided without the risk of damage to the steam turbine, in particular the risk of blade damage to the steam turbine.
  • the steam mass flow through the steam turbine can be adjusted particularly advantageous with the aid of the control valve of the steam turbine.
  • the steam turbine internal actual vapor pressure on the steam turbine internal desired vapor pressure of the steam mass flow is controlled indirectly by the steam turbine.
  • such a steam turbine internal actual vapor pressure for adjusting the steam mass flow is controlled by the steam turbine, which corresponds to a pressure of that stage of the steam turbine, the exhaust steam is fed to the downstream process as process steam.
  • a maximum permissible steam mass flow is determined by the steam turbine depending on the detected actual Abdampftik, depending on the maximum allowable steam mass flow through the steam turbine, the steam turbine internal desired steam pressure is determined. This allows a particularly advantageous adjustment, in particular regulation, of the steam mass flow through the steam turbine.
  • both the control valve of the steam turbine and the auxiliary control valve, in particular the bypass valve of the steam turbine bypass are controlled to control the actual boil-off pressure to the desired boil-off pressure.
  • both the control valve of the steam turbine and the auxiliary control valve, in particular the bypass valve of the steam turbine bypass to control the actual Abdampf réelles be controlled to the desired Abdampf réelle to control the actual Abdampf réelle to the desired Abdampftik.
  • Fig. 1 schematically shows a to be operated by means of the method according to the invention steam turbine 10, wherein the steam turbine 10 is supplied from a steam source 11 steam 12 for relaxation in the steam turbine 10. Relaxed exhaust steam 13, which leaves the steam turbine 10, is fed to a downstream process 14 as process steam.
  • the exhaust steam leaving the steam turbine 10 has a relatively low exhaust steam pressure p2, which also metrologically detected, again by means of a pressure sensor 25th
  • Fig. 1 are the metrologically detected actual pressures, namely the metrologically detected actual vapor pressure p1 of the steam to be relaxed 12 and the metrologically detected actual steam pressure p2 of the exhaust steam 13, a control device 19 can be fed. Then, when the actual steam pressure p1 of the steam 12 to be relaxed is too large, excess steam 12 can be diverted via a valve 18, in particular into the environment or to an (auxiliary) condenser.
  • the steam turbine 10 is associated with a control valve 15 which is positioned upstream of the steam turbine 10.
  • FIG. 1 a steam turbine bypass 16, in which a serving as an auxiliary control valve bypass valve 17 is integrated.
  • bypass valve 17 When the bypass valve 17 is closed all steam 12 is passed through the steam turbine 10. When the bypass valve 17 is open, however, steam 12 can be conducted past the steam turbine 10.
  • the procedure is that of the control device 19 for controlling the steam mass flow M through the steam turbine 10 dependent
  • a maximum permissible steam mass flow is determined by the steam turbine 10, preferably map-dependent.
  • a desired steam pressure within the steam turbine is also determined by the control device 19 as a function of the characteristic map, depending on the characteristic.
  • the control valve 15 of the steam turbine 10 is then controlled by the control device 19 so that a detected by means of a pressure sensor 26, steam turbine internal actual vapor pressure p3 corresponds to the steam turbine internal desired vapor pressure.
  • the steam mass flow M is then indirectly controlled by the steam turbine 10, namely via the regulation of the steam turbine internal actual steam pressure p3 to the steam turbine internal desired steam pressure via the control valve 15 of the steam turbine 10th
  • such a steam turbine internal actual vapor pressure p3 is regulated, which corresponds to a pressure of a last stage of the steam turbine 10.
  • Particularly preferred such a steam turbine internal actual vapor pressure p3 is regulated, which corresponds to a pressure of a stage of the steam turbine 10, the exhaust steam 13 is fed to the downstream process 14 as process steam.
  • the steam turbine internal actual vapor pressure p3 to be regulated is detected by measurement using the pressure sensor 26 and supplied to the control device 19.
  • Fig. 2 the steam mass flow M is applied through the steam turbine 10 above the actual exhaust steam pressure p2 of the exhaust steam 13 of the steam turbine 10.
  • the characteristic 21 of the Fig. 2 illustrates a steam mass flow-dependent, non-static and therefore dynamic threshold value for the actual steam pressure p2, at which reaching or falling below a protective shutdown of the steam turbine 10 would take place.
  • the steam turbine 10 is switched off protection.
  • the limit value 20 is used according to the invention, the limit of the 21 a has defined distance. If the actual exhaust steam pressure p2 is greater than the steam mass flow-dependent limit value 20, then there is no risk of damage to the steam turbine 10. In the area 22, both the control valve 15 of the steam turbine 10 and the bypass valve 17 of the steam turbine bypass 16 are used to determine the actual exhaust steam pressure p2 to regulate to the desired Abdampftik.
  • the control valve 15 of the steam turbine 10 is no longer used to regulate the actual steam exhaust pressure p2 to the desired exhaust steam pressure; in this case, the control valve 15 of the steam turbine 10 is used to control the steam mass flow M through the steam turbine 10, in which case the steam mass flow M is controlled along the limit value 20 indirectly via the steam turbine internal actual steam pressure p3.
  • the steam mass flow M is proportional to the steam turbine internal actual steam pressure p3 (M ⁇ p3) to be regulated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
EP16190272.1A 2016-03-15 2016-09-23 Verfahren zum betreiben einer dampfturbine Withdrawn EP3219939A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016204214.9A DE102016204214A1 (de) 2016-03-15 2016-03-15 Verfahren zum Betreiben einer Dampfturbine

Publications (1)

Publication Number Publication Date
EP3219939A1 true EP3219939A1 (fr) 2017-09-20

Family

ID=57189739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16190272.1A Withdrawn EP3219939A1 (fr) 2016-03-15 2016-09-23 Verfahren zum betreiben einer dampfturbine

Country Status (3)

Country Link
EP (1) EP3219939A1 (fr)
CA (1) CA2957052C (fr)
DE (1) DE102016204214A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4321738A1 (fr) * 2022-05-26 2024-02-14 General Electric Technology GmbH Système et procédé d'actionnement hydraulique de soupapes principales et de dérivation d'une turbine à vapeur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005036685A (ja) * 2003-07-17 2005-02-10 Mitsubishi Heavy Ind Ltd コンバインドプラントの自動停止方法及び自動停止制御装置及びこの自動停止制御装置を備えたコンバインドプラント
US20090211252A1 (en) * 2008-02-19 2009-08-27 Kabushiki Kaisha Toshiba Power generation complex plant and plant control method
US20100275610A1 (en) * 2007-09-27 2010-11-04 Kabushiki Kaisha Toshiba Power generation plant and control method thereof
US20110185744A1 (en) * 2010-02-02 2011-08-04 General Electric Company Method and apparatus for combined cycle power plant startup
WO2015179907A1 (fr) * 2014-05-30 2015-12-03 Leartek Pty Ltd Procédé et dispositif de commande de système de récupération de chaleur d'échappement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006088442A1 (fr) * 2005-02-14 2006-08-24 Carrier Corporation Msysteme de generateur a turbine a vapeur
JP4616847B2 (ja) * 2007-02-16 2011-01-19 三菱重工業株式会社 蒸気システムとその制御システム及び制御方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005036685A (ja) * 2003-07-17 2005-02-10 Mitsubishi Heavy Ind Ltd コンバインドプラントの自動停止方法及び自動停止制御装置及びこの自動停止制御装置を備えたコンバインドプラント
US20100275610A1 (en) * 2007-09-27 2010-11-04 Kabushiki Kaisha Toshiba Power generation plant and control method thereof
US20090211252A1 (en) * 2008-02-19 2009-08-27 Kabushiki Kaisha Toshiba Power generation complex plant and plant control method
US20110185744A1 (en) * 2010-02-02 2011-08-04 General Electric Company Method and apparatus for combined cycle power plant startup
WO2015179907A1 (fr) * 2014-05-30 2015-12-03 Leartek Pty Ltd Procédé et dispositif de commande de système de récupération de chaleur d'échappement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4321738A1 (fr) * 2022-05-26 2024-02-14 General Electric Technology GmbH Système et procédé d'actionnement hydraulique de soupapes principales et de dérivation d'une turbine à vapeur
US12428972B2 (en) 2022-05-26 2025-09-30 Ge Infrastructure Technology Llc System and method for hydraulically actuating main and bypass valves of a steam turbine

Also Published As

Publication number Publication date
CA2957052A1 (fr) 2017-09-15
CA2957052C (fr) 2019-03-12
DE102016204214A1 (de) 2017-09-21

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