EP1365109A1 - Turbine à vapeur - Google Patents

Turbine à vapeur Download PDF

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Publication number
EP1365109A1
EP1365109A1 EP02011282A EP02011282A EP1365109A1 EP 1365109 A1 EP1365109 A1 EP 1365109A1 EP 02011282 A EP02011282 A EP 02011282A EP 02011282 A EP02011282 A EP 02011282A EP 1365109 A1 EP1365109 A1 EP 1365109A1
Authority
EP
European Patent Office
Prior art keywords
steam
reheater
turbine
heated
pressure stage
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Withdrawn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
EP02011282A
Other languages
German (de)
English (en)
Inventor
Thorsten Wolf
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 EP02011282A priority Critical patent/EP1365109A1/fr
Priority to US10/443,130 priority patent/US20030221410A1/en
Publication of EP1365109A1 publication Critical patent/EP1365109A1/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Withdrawn legal-status Critical Current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
    • 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type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
    • 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
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
    • F01K3/26—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam
    • F01K3/262—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam by means of heat exchangers

Definitions

  • the invention relates to a steam turbine with at least one High pressure, at least one medium pressure and at least one Low pressure stage.
  • Known steam power plants usually include several steam turbines, which from a steam boiler process steam higher Temperature is supplied. The contained in this operating steam Energy is converted by the steam turbine into rotational energy, which in turn by means of at least one, with of the steam turbine or the generator connected to electrical Energy is implemented.
  • the efficiency of steam power plants is mainly determined by the pressure and temperature of the turbine stages incoming steam and the number of reheat stages as well as their respective superheating temperature.
  • the reheat stages of known steam power plants are usually arranged in the steam boiler, so that the entire Steam emerging from a turbine stage in the Steam boiler overheated and fed to the subsequent turbine stage becomes.
  • the invention is based on the object, known steam turbines to improve, especially with regard to the to be achieved Efficiency and also with a view to improved Lifespan of the blades of the steam turbine, in particular the blades of the low pressure part.
  • a steam turbine with at least one high pressure, at least one medium pressure and at least one low pressure stage, as well as at least a steam channel, which is between the medium pressure and the low pressure stage is arranged so that steam is out the medium pressure stage of the low pressure stage can be fed, wherein at least one reheater is connected in the steam duct which is heated by steam.
  • the invention proposes before, into the steam channel between the medium pressure part and the Low-pressure section to a steam-heated reheater turn.
  • the steam channel can be used, for example, as an overflow line ("Cross over pipe”) or as a flow channel within the Turbine housing (e.g. an annular channel).
  • an overflow line (“Cross over pipe”
  • a flow channel within the Turbine housing e.g. an annular channel
  • the reheater according to the invention does not use hot gas the steam boiler, but can be heated with steam this reheater prefers not in the steam boiler, but directly at or close to the steam turbine (e.g. in the turbine housing, the steam channel being an annular channel can) arranged so that the steam guide to the invention Reheater, both with regard to the medium of the reheater steam to be heated, as well as its Heating steam according to the invention is simplified.
  • the reheater according to the invention can be used the existing guide vanes of the steam turbine be used.
  • the cause of the improvement includes in that the energy conversion process the steam turbine by means of the invention steam-heated reheater closer to the ideal Carnot cycle is introduced. Besides, will by means of the steam-heated reheater according to the invention the steam wetness of the steam is reduced.
  • the steam by means of which the reheater is advantageous is heated can be removed from a steam flow, which is fed to another reheater.
  • Such a further reheater can, for example be arranged in the steam boiler.
  • the heating steam for the steam-heated The superheater can be found in the steam flow, which the further reheater for reheating is fed.
  • the further reheater can e.g. the reheater by means of which the known, so-called first reheating is realized.
  • the steam that one such additional reheater is supplied, is particularly suitable for use as heating steam in connection with the invention so that this steam is advantageous a steam stream is removed and the steam-heated reheater is supplied as heating steam. That with the invention steam-heated reheating Condensate is advantageous to an existing steam side Auxiliary condensate feed of a preheater of a turbine stage fed.
  • steam can be heated by means of the additional reheater, which leaves the high pressure stage and the medium pressure stage is feedable.
  • This embodiment of the invention is the further reheater the reheater that the Steam from the high pressure stage is reheated and the medium pressure stage feeds.
  • the steam that such a is particularly supplied favorable temperature properties with regard to its use as heating steam for the reheater according to the invention on.
  • the further reheater is advantageous within one Steam boiler arranged.
  • Such a further reheater is consequently means of the heating gas in the steam boiler is heated.
  • the steam boiler can advantageously use a fossil Fuel heated or designed as a waste heat boiler be heated by exhaust gas from a gas turbine.
  • the first-mentioned embodiment comprises actively heated steam boilers, which have burners supplied with fossil fuel is.
  • the latter steam boiler does not include an active means Burner and fuel heated boiler but a boiler that which are already supplied with hot heating gas.
  • Particularly suitable for such heating purposes in a steam boiler is the exhaust gas from a gas turbine, which is a temperature has, which for generating operating steam for a Steam turbine in a waste heat boiler is suitable.
  • Such waste heat boilers can preferably be used in power plants, which comprise at least one gas and one steam turbine, for example gas and steam power plants. Doing so the hot exhaust gas from the gas turbine to generate operating steam used for the steam turbine, often the additional active heating of the exhaust gas can be omitted.
  • FIG a steam turbine according to the invention.
  • the steam turbine 1 comprises a high pressure stage 3, a medium pressure level 5 and at least one low pressure level 7th
  • the steam turbine 1 is used to generate electrical energy coupled to a generator 9, which is on the same Shaft as the turbine stages can be located.
  • High pressure stage 3 by means of a steam feed 11 live steam supplied, which is preferably by means of a steam boiler 13 is generated.
  • a steam stream 20 which after performing work in the High pressure level 3 leaves this by means of a in the steam boiler 13 arranged further reheater 15 overheats and the medium pressure stage 5 supplied.
  • the medium pressure stage 5 is through an overflow line 17 connected to the low pressure stage 7.
  • an intermediate superheater 14 is connected according to the invention, which can be heated with steam.
  • the one needed Heating steam is preferably taken from the steam flow 20, which leaves high pressure stage 3.
  • the heating steam for the reheater 14 is by means of a heating steam line 12 Reheater 14 supplied.
  • the overflow line 17 can, as shown by dots in the figure, from the low pressure stage 7 continued to a further low pressure stage his.
  • Analogous to the steam turbine 1 according to the invention is in a modification of the invention conceivable in an overflow line between the low pressure stage and another low pressure stage a steam turbine also a steam-heated reheater provided.
  • the heating steam for this can, for example are taken from a steam flow which the superheat stages arranged in the steam boiler is, including the other reheater shown 15.
  • the selection of a suitable reheater takes place advantageously due to the temperature range in which the respective other reheater works.
  • a steam-heated reheater 14 is provided, which is connected in the overflow line 17 between the medium pressure stage 5 and the low pressure stage 7 of the steam turbine 1.
  • the heating steam for the reheater 14 is preferably taken from the so-called cold first reheater.

Landscapes

  • 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)
EP02011282A 2002-05-22 2002-05-22 Turbine à vapeur Withdrawn EP1365109A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02011282A EP1365109A1 (fr) 2002-05-22 2002-05-22 Turbine à vapeur
US10/443,130 US20030221410A1 (en) 2002-05-22 2003-05-22 Steam turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02011282A EP1365109A1 (fr) 2002-05-22 2002-05-22 Turbine à vapeur

Publications (1)

Publication Number Publication Date
EP1365109A1 true EP1365109A1 (fr) 2003-11-26

Family

ID=29286135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011282A Withdrawn EP1365109A1 (fr) 2002-05-22 2002-05-22 Turbine à vapeur

Country Status (2)

Country Link
US (1) US20030221410A1 (fr)
EP (1) EP1365109A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757293A (en) * 1953-12-10 1956-09-19 Sulzer Ag Steam power plants employing forced flow steam generators
DE1029010B (de) * 1952-12-24 1958-04-30 Escher Wyss Gmbh Dampfkraftanlage mit Frischdampfdruck von mindestens 150 ata und mindestens zweifacher Zwischenueberhitzung des Arbeitsdampfes
CH344426A (de) * 1955-09-27 1960-02-15 Hellmut Dipl Ing Eickemeyer Verfahren zum Betreiben einer Dampfkraftanlage mit Zwischenüberhitzung durch Frischdampf
FR1266810A (fr) * 1960-09-02 1961-07-17 Sulzer Ag Centrale thermique à vapeur avec machine motrice à plusieurs étages
DE19619470C1 (de) * 1996-05-14 1997-09-25 Siemens Ag Gas- und Dampfturbinenanlage sowie Verfahren zu deren Betrieb

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005234A1 (fr) * 1985-03-15 1986-09-12 Tch Thermo-Consulting-Heidelberg Gmbh Installation mixte de turbines a vapeur et a gaz
EP0523466B1 (fr) * 1991-07-17 1995-10-04 Siemens Aktiengesellschaft Procédé de fonctionnement d'une installation à turbines à gaz et à vapeur et installation pour la mise en oeuvre du procédé

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029010B (de) * 1952-12-24 1958-04-30 Escher Wyss Gmbh Dampfkraftanlage mit Frischdampfdruck von mindestens 150 ata und mindestens zweifacher Zwischenueberhitzung des Arbeitsdampfes
GB757293A (en) * 1953-12-10 1956-09-19 Sulzer Ag Steam power plants employing forced flow steam generators
CH344426A (de) * 1955-09-27 1960-02-15 Hellmut Dipl Ing Eickemeyer Verfahren zum Betreiben einer Dampfkraftanlage mit Zwischenüberhitzung durch Frischdampf
FR1266810A (fr) * 1960-09-02 1961-07-17 Sulzer Ag Centrale thermique à vapeur avec machine motrice à plusieurs étages
DE19619470C1 (de) * 1996-05-14 1997-09-25 Siemens Ag Gas- und Dampfturbinenanlage sowie Verfahren zu deren Betrieb

Also Published As

Publication number Publication date
US20030221410A1 (en) 2003-12-04

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