WO2016162272A1 - Installation de turbine et procédé pour faire fonctionner une installation de turbine - Google Patents

Installation de turbine et procédé pour faire fonctionner une installation de turbine Download PDF

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Publication number
WO2016162272A1
WO2016162272A1 PCT/EP2016/057182 EP2016057182W WO2016162272A1 WO 2016162272 A1 WO2016162272 A1 WO 2016162272A1 EP 2016057182 W EP2016057182 W EP 2016057182W WO 2016162272 A1 WO2016162272 A1 WO 2016162272A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam
working fluid
turbine
steam generator
pressure
Prior art date
Application number
PCT/EP2016/057182
Other languages
German (de)
English (en)
Inventor
Christoph Schindler
Michael Winkel
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2016162272A1 publication Critical patent/WO2016162272A1/fr

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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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • 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
    • F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant

Definitions

  • the invention relates to a method for operating a turbine system with a steam generator and a steam turbine, in which steam is generated in the steam generator, which is passed into the steam turbine, and the steam turbine is driven by the steam.
  • the invention relates to a turbine plant with a steam turbine and one with the
  • Steam turbine connected to the steam generator, which is adapted to steam for driving the steam turbine to erzeu ⁇ gen.
  • the electricity market is increasingly changing due to an increasing share of renewable energies in power generation. Especially the generation of electricity from solar energy and / or wind energy is subject to strong fluctuations, so that more and more an adapted, flexible energy supply is demanded from thermal power plants to compensate for the fluctuations.
  • the ⁇ be indicated, due to an ever-increasing flexibility of the electricity market will require a variable power output of power plants increasingly.
  • turbines of the thermal power plants will be adapted to a current power requirement.
  • Turbine systems are usually optimized for a given Leis ⁇ tung and have limited abilities to fle ⁇ ble adjusting the power.
  • a known method for increasing the power generated by the turbine system provides to throttle valves between a steam generator and a steam turbine in normal operation and to open at a ge ⁇ desired performance increase these valves. By opening the valves, there is an increase in a
  • the turbine plant has a working fluid accumulator connected to the steam generator and a steam mass flow in the steam turbine is increased by a working fluid from the working fluid accumulator is fed into the steam turbine.
  • the invention is based on the consideration that using the working fluid accumulator, the steam mass flow in the steam turbine can be increased without previously valves zwi ⁇ tween the steam generator and the steam turbine must be throttled. As a result, a higher efficiency of the turbine system can be achieved. At a desired performance ⁇ increase of the means of storage can stand as an additional source of steam for the steam turbine.
  • the working fluid accumulator if it is filled with working fluid, is ready for use at any time.
  • the invention is further based on the consideration that the components of the steam generator should have the smallest possible volume in order to keep a thermal inertia of the steam generator low.
  • the working memory means can be any size designed principally insbeson ⁇ particular since the working fluid reservoir can be pelt Tinkop- from the steam generator and thus does not affect the thermal inertia of the turbine system when disconnected.
  • the steam generator could in principle be smaller than previously customary. which has the advantage that the thermal inertia of the steam generator can be reduced. In particular, it is therefore possible to start the turbine system faster than usual.
  • the steam generator may include one or more steam boilers. It makes sense to store the working fluid and the steam generator are two separate elements of the turbine system. That is, the working fluid storage is expediently no part of the steam generator. Furthermore, it makes sense ⁇ full, if the working fluid storage is located outside the steam generator.
  • the steam generator can be arranged in a closed space and the working fluid store can be located outside this room.
  • the working fluid reservoir can be decoupled from the steam generator by means of one or more valves. As a disconnected state, such a state can be understood in which a mass transfer between the steam generator and working fluid storage is prevented.
  • the working medium at least We ⁇ sentlichen water.
  • the aforesaid steam may consequently comprise in particular water vapor.
  • the working fluid may contain additives in addition to water.
  • the working fluid is passed from the Hämit ⁇ telatorium in the steam generator.
  • the working fluid can be heated.
  • the working fluid can be passed from the steam generator in the steam turbine.
  • the working fluid preferably emerges at least substantially in the form of steam from the working fluid accumulator .
  • the whole contained in the working memory beitssch or only a part thereof may be in the steam turbine ge ⁇ passes.
  • a generator is driven by the steam turbine, which generates an electric power.
  • increasing the steam mass flow in the steam turbine increases the electrical power generated by the generator.
  • a condensate or a condensate-steam mixture can be stored.
  • the condensate is expediently condensed steam.
  • a condensate from the steam generator is fed into the working fluid reservoir to fill the working fluid store.
  • the condensate can be passed from a liquid separator of the steam generator into the working fluid reservoir to fill the working fluid reservoir.
  • the condensate from a preheater, also referred to as economizer, or an evaporator of the steam generator can be passed into the working fluid reservoir to fill the working fluid storage.
  • the condensate forms the working fluid.
  • the condensate can be removed from any other element of the turbine system which contains a condensate.
  • the condensate is fed gravitativ and / or with the aid of a pump in the working ⁇ memory.
  • the filling of the working fluid accumulator can basically follow it, while the turbine system is operated at full load or at partial load.
  • the working fluid reservoir is filled ideal manner while the turbine system is operated at a high load, for example at a load corresponding to min ⁇ least 50% of full load to the working medium of brass with a high energy density in the working fluid storage to storage.
  • the working fluid storage can basically from a medium-pressure or a low pressure region of the steam generator be filled.
  • the working fluid accumulator is filled from a high-pressure region of the steam generator.
  • valves between the working fluid accumulator and the steam generator are closed. If an increase in the steam mass flow in the steam turbine is desired by an operator, at least one of the valves between the working fluid accumulator and the steam generator is expediently opened. By opening at least one of these valves, the working fluid from the working fluid storage in the steam generator and subsequently passed into the steam turbine ⁇ the.
  • the condensate, which forms the working ⁇ medium evaporated from the working fluid accumulator before the working fluid is passed from the working fluid reservoir in the steam turbine.
  • all the working fluid contained in the working fluid reservoir can evaporate or only a part thereof.
  • the Ar ⁇ beitsstoff evaporated due to a reduction in pressure in the working fluid accumulator, for example, when a valve between Hämit ⁇ tel Items and steam generator is opened. And the boiling temperature of the working fluid is lowered by the pressure expediently lowered in the working medium reservoir and the Ar ⁇ beitsstoff begins in the working fluid reservoir to vaporize or "boil".
  • the condensate which is introduced into the Ar ⁇ beitsstoffssen a temperature
  • the temperature of the condensate introduced is substantially equal to a saturated steam temperature preferably at the saturated steam temperature or up to 5% below the saturated steam temperature.
  • An advantage of this is that the working medium with a high energy density can be vomit ⁇ chert.
  • the working ⁇ medium is passed from the steam generator at nominal pressure in the working fluid reservoir . Nominal pressure can be understood as the pressure which prevails in that element from which the condensate is removed.
  • An advantageous embodiment of the invention provides that the working fluid is passed from the working fluid storage in the steam turbine at a startup of the steam turbine. Also in this case, the steam mass flow in the steam turbine is increased. In this way, the starting process or the start of operation of the steam turbine can be accelerated.
  • a further advantageous embodiment of the invention provides that the working fluid, in particular in the form of a condensate ⁇ sats, from a first element of the steam generator, in which a first pressure prevails, is passed into the working fluid reservoir.
  • the working fluid from the working fluid ⁇ memory can be passed into a second element of the steam generator, in which a second pressure prevails.
  • This second pressure is expediently lower than the first pressure.
  • the first element can be, for example, a liquid separator , an evaporator or a preheater of the steam generator.
  • the second element can be, for example, another liquid separator , a superheater, another evaporator or another preheater of the steam generator.
  • the first element may be arranged, for example, in the high-pressure region of the steam generator.
  • the second element is arranged in the medium-pressure or low-pressure region of the steam generator.
  • Exemplary be ⁇ interprets that the working fluid reservoir may initially be filled with the working fluid from the high pressure area of the steam generator. Subsequently, the work equipment can be discharged to the working fluid accumulator in the medium-pressure range or in the low pressure range of the steam generator. It is also conceivable that the first element is arranged in the middle ⁇ pressure range. In the latter case, the second element is advantageously arranged ⁇ in the low pressure area.
  • an advantageous embodiment of the He ⁇ invention provides that the working medium, in particular in the form of egg nes condensate is introduced from an element of the steam generator via ei ⁇ ne connecting line into the working fluid reservoir, while the turbine system is operated under a first predetermined load.
  • the element is preferably a liquid separator, an evaporator or a preheater of the steam generator.
  • the working fluid is again introduced into the same ele ment ⁇ of the steam generator, while the Turbinenan ⁇ position is operated under a second predetermined load.
  • This is useful if the working fluid is introduced via the ⁇ same connection line in the same element of Dampferzeu ⁇ gers. It is particularly preferable if the working fluid is introduced directly into the same element of Dampferzeu ⁇ gers is.
  • the second load is suitably lower than the first load.
  • the working fluid reservoir was filled with ⁇ play, when full load operation of the turbine system via a connecting line from an element of the high pressure area of the steam generator, the working fluid from the working fluid reservoir can be discharged over DIE same connection line back into the same element of the high pressure area in the partial load operation.
  • the working fluid is directed into the same pressure range of the steam generator, but in another element.
  • the invention has for its object to provide a tur ⁇ binenstrom in which the power generated by the turbine system can be increased efficiently.
  • This turbine plant may be the turbine system used in the above method in particular beschrie ⁇ surrounded. It is useful if the working fluid storage has a thermal insulation. This thermal energy losses of the working fluid in the working fluid reservoir can be redu ⁇ ed.
  • the steam turbine can have a single pressure stage.
  • the steam turbine comprises a plurality of pressure stages, in particular a high-pressure, a medium-pressure and / or a low-pressure stage. As a result, the efficiency of the turbine system, compared to a single-stage steam turbine can be increased.
  • the steam generator comprises a plurality of Druckbe ⁇ rich, in particular a high-pressure, a medium pressure and / or a low pressure area.
  • the working fluid accumulator can be connected to at least one, preferably at least two, of the pressure ranges.
  • the working fluid store is connected in each case via a connecting line with the respective pressure range.
  • the Africanspei is rather connected via a single connecting line with the Dampferzeu ger.
  • the working fluid accumulator is connected via at least two connecting lines to the steam generator. Thereby it is e.g. possible to initiate the Ar beitsstoff in different pressure ranges and / or in un ferent elements of the steam generator.
  • the steam generator is equipped with at least one liquid separator, at least one preheater and / or at least one superheater.
  • the working medium reservoir is preferably connected in each case via a kauslei ⁇ tion with the liquid separator, the preheater and / or a superheater.
  • each of the pressure ranges of the steam generator may include a superheater, an evaporator and / or a preheater.
  • each connecting line between the working fluid reservoir and the steam generator comprises a valve.
  • the working fluid accumulator can be disconnected from the steam generator.
  • the thermal inertia of the turbine system can be kept low.
  • the working fluid storage is expediently connected to an element of the steam generator, which contains a liquid ⁇ speed or a condensate.
  • the Ar beitsstoff be filled with working fluid in the form of condensate.
  • the turbine system comprises a gas turbine.
  • the turbine installation can thus be in particular a gas-and-steam Acting turbine plant.
  • the gas turbine is expediently exhaust-side, ie via an exhaust pipe, connected to the Dampferzeu ⁇ ger.
  • an exhaust gas produced during the combustion of a fuel to drive the gas turbine is passed through the steam generator and provides thermal energy for evaporating the condensate.
  • the turbine system may be a component of a Koh ⁇ lekraftwerks or a solar thermal energy system.
  • FIG. 1 shows a turbine plant with a steam generator, which comprises a plurality of liquid separators, and with egg ⁇ nem working fluid accumulator, which is connected to the liquid separators;
  • FIG. 2 shows a turbine system with a steam generator, which comprises a plurality of preheaters and a plurality of superheaters, and with a working fluid accumulator, which is connected to one of the preheater and one of the superheater.
  • Turbine plant 2 comprises a gas turbine 4, a steam generator 6 and a separate working fluid reservoir 8 connected to a steam generator 6 for storing a working fluid.
  • the gas turbine 4 is connected via an exhaust pipe 10 to the steam generator 6.
  • the turbine system 2 comprises a steam turbine 12 ⁇ which stage a high-pressure stage 14, an intermediate-16 and comprises a low pressure stage 18th
  • the steam generator 6 comprises a high-pressure region 20, a medium-pressure region 22 and a low-pressure region 24.
  • Each of the pressure regions 20, 22, 24 is provided with a superheater 26, 28, 30, a liquid separator 32, 34, 36, an evaporator 38, 40, 42 and a preheater 44, 46, 48 equipped.
  • the high pressure area 20 additionally includes a reheater 50.
  • an exhaust outlet 52 which is out ⁇ leads as a fireplace.
  • the working fluid accumulator 8 is connected via a connecting line 54 to the liquid separator 32 of the high-pressure region 20.
  • the working fluid accumulator 8 is connected via a connecting line 58 to the liquid separator 34 of the medium-pressure region 22.
  • the working fluid accumulator 8 is connected via a connecting line 62 to the liquid separator 36 of the low-pressure region 24.
  • each of the connecting lines 54, 58, 62 each have a valve 56, 60, 64.
  • the gas turbine 4 is connected to a combustion chamber 66, which has a fuel feed 68.
  • a fuel in the combustion chamber 66 is combusted ⁇ and hot, pressurized exhaust gases are supplied to the gas turbine 4 and expanded there with the performance of mechanical work.
  • the still about 500 to 700 ° C hot exhaust gases are then fed through the exhaust pipe 10 to the steam generator 6. Further, the exhaust gases flow through the steam generator 6 until they finally reach the environment through the exhaust gas outlet 52.
  • the exhaust gases supply their heat to the superheater 26, the reheater 50, the evaporator 38 and the preheater 44 of the high-pressure region 20.
  • the exhaust gases supply their heat to the superheater 28, the evaporator 40 and the preheater 46 of the medium pressure region 22. Furthermore, the exhaust gases carry their heat to the superheater 30, the evaporator 42 and the preheater 48, also called condensate preheater, of the low-pressure region 24.
  • a working medium is in the steam generator 6, in particular in the evaporator 38 of the high-pressure region 20, evaporated.
  • the working fluid in the present example in Wesentli ⁇ chen of water.
  • the working fluid contains additives.
  • the resulting ⁇ ne steam is heated and ansch manend by a Ablei ⁇ tion 70 in the high-pressure stage 14 of the steam turbine 12 passes. Subsequently, in the high-pressure stage 14 of the
  • Steam turbine 12 partially relaxed hot steam the intermediate ⁇ superheater 50 of the high-pressure region 20 in the steam generator 6 supplied.
  • the steam is reheated and passed through a further discharge line 72 in the intermediate pressure stage 16 of the steam turbine 12 and there relaxed while performing mechanical shear ⁇ work.
  • the partially relaxed in the intermediate pressure stage 16 of the steam turbine 12 steam is via a (turbine) internal supply line of the low pressure stage 18 of
  • the steam turbine 12 is connected to a generator 78 via a shaft 74, which has a coupling 76.
  • the gas turbine 4 is rigidly connected to the shaft 74 via the shaft 74
  • the steam turbine 12 and the Gasturbi ⁇ ne 4 drive with coupled coupling 76 via the shaft 74 to the generator 78, which generates electrical energy.
  • the turbine system 2 could also be designed as a multi-shaft system, ie the gas turbine 4 and the
  • Steam turbine 12 may each be connected via its own shaft, each with a generator.
  • the expanded steam is condensed out in a condenser 80 connected downstream of the steam turbine 12.
  • a part as in ⁇ resulting condensate is fed via a condensate pump 82, the low pressure region 24 of the steam generator 6 of the.
  • Another part of the condensate is via one of the condensate pump 82 downstream feed pump 84 to the medium-pressure region 22 and the high-pressure region 20 of the steam generator 6 is supplied.
  • the condensate introduced into the low-pressure region 24 of the steam generator 6 is reheated. In this case, the condensate evaporates and the resulting vapor is further heated. About a derivative 86 of the steam is passed into the low-pressure stage 18 of the steam turbine 12. The ⁇ be introduced into the medium-pressure section 22 of the steam generator condensate 6 is also heated again. Here ver ⁇ evaporated, the condensate and the resulting steam is further heated. Via a connecting line 88, the steam is passed into the reheater 50 in the high-pressure region 20, where the steam is further heated. Via a discharge line 72, the steam is conducted into the medium-pressure stage 16 and from there into the low-pressure stage 18 of the steam turbine 12.
  • Condensate also and the resulting vapor is further ⁇ he heated.
  • the steam passes via the corresponding discharge line 70 into the steam turbine 12.
  • the steam is used to perform mechanical work and the process described above is repeated in a cycle.
  • the civil system 2 under a high load, in particular ⁇ sondere is operated under full load
  • the civil fluid is a condensate from the steam generator. 6
  • the condensate is removed from the high-pressure region 20 of the steam generator 6.
  • the condensate is gravitationally guided from the liquid separator 32 of the high-pressure region 20 in the working fluid reservoir 8.
  • the condensate is removed from the liquid separator 32 at approximately saturated steam temperature.
  • valves 60, 64 of the connecting lines 58, 62 are of the working medium storage rather 8 closed to the medium-pressure region 22 and to the low-pressure region 24.
  • valve 60 of the connecting line 58 is first opened by the working fluid accumulator 8 into the central pressure region 22 of the steam generator 6. In the middle ⁇ pressure range 22 there is a lower pressure than in the working fluid accumulator 8. Therefore, the boiling temperature of the condensate in the working fluid reservoir 8 is lowered by opening the réellege ⁇ called valve 56. Consequently, the work of cooking medium from the working medium reservoir 8 and thereby ent ⁇ avowed, additional steam is Gelei tet ⁇ in the diesstechniksabschei ⁇ of 34 of the medium-pressure section 22 of the steam generator. 6 Any drops of steam entrained in the steam are in
  • Liquid separator 34 separated.
  • the additional steam is heated in the superheater 28 of the medium-pressure region and in the reheater 50 of the high-pressure region 20 and then passed into the medium-pressure stage 16 of the Dampftur ⁇ bine 12.
  • a steam mass flow in the medium-pressure stage 16 and consequently also in the low-pressure stage 18 of the steam turbine 12 is increased. In this way, the electric power generated by Gene ⁇ rator 78 increases.
  • the additional steam is heated in the superheater 30 of the low pressure region 24 and passed into the low pressure stage 18 of the steam turbine 12.
  • the steam mass flow in the low-pressure stage 18 of the steam turbine 12 is increased.
  • the electric power generated by the generator 78 is increased.
  • the valve 56 of the Ver ⁇ connection line 54 is opened by the working medium reservoir 8 for liquid separator 32 the high pressure area twentieth
  • the valves 60, 64 of the connecting lines 58, 62 from the working medium memory 8 to the medium-pressure region 22 or to the low-pressure region 24 are kept closed.
  • partial load operation prevails in the high pressure region 20 of the steam generator 6, a lower pressure than in full load operation and thus a lower pressure than in the working fluid storage 8.
  • the additional steam generated in this way is passed into the liquid separator 32 of the high-pressure region 20 of the steam generator 6. Subsequently, the additional steam is directed into the superheater 26 of the high pressure section 20 where it is heated. From the latter, the additional steam is passed into the high-pressure stage 14 of the steam turbine 12, whereby the steam mass flow in the high-pressure stage 14 of the steam turbine 12 is increased. Since the steam is passed from the high-pressure stage 14 in the manner described above in the intermediate-pressure stage 16 and Nie ⁇ derdruckch 18 of the steam turbine 12, is also increased in the two latter pressure stages 16, 18 of the steam mass flow. In this way, the electric power generated by Genera ⁇ tor 78 is increased.
  • the valve 56 of the dung Verbin ⁇ line 54 between the working medium reservoir 8 and high-pressure area 20 is closed.
  • the working fluid is introduced from the working fluid accumulator 8 into the medium-pressure region 22 until the pressure in the working fluid accumulator 8 has adapted to the pressure in the medium-pressure region 22.
  • the valve 60 of the connecting line 58 between the working fluid reservoir 8 and the medium-pressure region 22 is closed.
  • the working fluid is introduced from the working fluid accumulator 8 into the low-pressure region 24.
  • the working fluid which was filled in a vorrausgangs operation of the steam turbine 12 in the working fluid reservoir 8, are passed from the working fluid ⁇ memory 8 in the steam turbine to the starting process to accelerate the steam turbine 12.
  • the working fluid is conducted into the steam generator 6 and thereby causes an increase in the steam mass flow in the steam turbine 12.
  • 2 schematically shows another turbine system 2, likewise designed as a gas-and-steam turbine, with a working storage 8. The following description is essentially limited to the differences from the exemplary embodiment shown in FIG. 1 with respect to features which remain the same and functions. Essentially identical elements are generally designated by the same reference numerals, and features not mentioned are taken over into the following exemplary embodiment without being described again.
  • the Ar ⁇ beitsstoffurs 8 in the present example is not provided with the liquid separators 32, 34, 36 of the steam generator 6 connected comparable.
  • the working fluid reservoir 8 is connected via a connecting line 90, which has a valve 92, to the preheater 38 and the evaporator 42 of the high-pressure region 20, wherein the connecting line 90 on the inlet side of the evaporator 38 and the output side of the preheater 44 to the steam generator 6 is connected.
  • the working fluid accumulator 8 is also connected via the connecting line 94, which has a valve 96, to the superheater 28 of the medium-pressure region 22.
  • the Africanspei ⁇ cher 8 is filled with condensate from the steam generator. 6
  • the valve 92 of the connecting line 90 between the working fluid accumulator 8 and the high-pressure region 20 of the steam generator 6 is opened.
  • the valve 96 of the connecting pipe 94 Zvi ⁇ rule the working medium reservoir 8 and the superheater 28 of the medium-pressure section 22 of the steam generator 6 remains CLOSED ⁇ sen. After filling the working fluid accumulator 8, the two latter valves 92, 96 are closed.
  • the valve 96 of the Wegslei ⁇ tung 94 between the working medium reservoir 8 and the medium is pressure range 22 opened.
  • opening the valve 96 of the kauslei ⁇ tung 94 between the working medium reservoir 8 and intermediate-pressure region 22 prevails, the working medium starts to boil.
  • the resulting vapor is passed into the superheater 28 of the medium pressure stage 22 and heated there. Any entrained drops are evaporated.
  • the additional steam passes through the reheater 50 of the high-pressure region via an outlet 72 into the medium-pressure stage 16 of the steam turbine 12
  • the turbine system 2 If the turbine system 2 is operated under partial load, it is possible to increase the electrical power generated by the turbine system 2, to introduce the working fluid from the working fluid accumulator 8 in the high-pressure region 20 of the steam generator 6.
  • the valve 92 of the connecting line 90 between the working fluid accumulator 8 and the high-pressure region 20 is opened.
  • partial load operation there is a lower pressure in the high pressure region 20 than in full load operation, so that the working fluid evaporates from the working fluid reservoir 8.
  • the additional vapor passes through the evaporator 38 of the high-pressure region 20 into the superheater 26 of the high-pressure region 20, where it is heated.
  • the additional steam is passed into the steam turbine 12.
  • generator 78 generates more electrical power.
  • the connecting line 94 between the working fluid accumulator 8 and the medium-pressure region 22 may alternatively be connected to the evaporator 40 of the medium-pressure region 22. Furthermore, it is possible for the working fluid accumulator 8 to be connected to the low-pressure region 24 of the steam generator 6, in particular to the superheater 30 or the evaporator 42 of the low-pressure region 24, instead of the medium-pressure region 22.
  • the operation of the turbine system 2 would be analogous to the above-described operation in such a case.

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  • 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)

Abstract

L'invention concerne un procédé pour faire fonctionner une installation de turbine (2) comprenant un générateur de vapeur (6) et une turbine à vapeur (12), procédé selon lequel de la vapeur est générée dans le générateur de vapeur (6), laquelle est acheminée dans la turbine à vapeur (12), et la turbine à vapeur (12) est entraînée par la vapeur. Selon l'invention, en vue d'accroître efficacement une puissance produite par l'installation de turbine (2), l'installation de turbine (2) possède un accumulateur de fluide de travail (8) relié au générateur de vapeur (6) et un débit massique de vapeur dans la turbine à vapeur (12) est augmenté en acheminant dans la turbine à vapeur (12) un fluide de travail issu de l'accumulateur de fluide de travail (8).
PCT/EP2016/057182 2015-04-10 2016-04-01 Installation de turbine et procédé pour faire fonctionner une installation de turbine WO2016162272A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015206440 2015-04-10
DE102015206440.9 2015-04-10

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WO2016162272A1 true WO2016162272A1 (fr) 2016-10-13

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0410111A1 (fr) * 1989-07-27 1991-01-30 Siemens Aktiengesellschaft Chaudière de récupération de chaleur pour une centrale à turbine à gaz et à vapeur
EP0579061A1 (fr) * 1992-07-15 1994-01-19 Siemens Aktiengesellschaft Méthode de fonctionnement d'un système à turbines à gaz et à vapeur et système pour la mise en oeuvre de la méthode
DE19918347A1 (de) * 1999-04-22 2000-10-26 Asea Brown Boveri Verfahren und Vorrichtung zur schnellen Leistungssteigerung und Sicherstellung einer Zusatzleistung einer Gasturbinenanlage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0410111A1 (fr) * 1989-07-27 1991-01-30 Siemens Aktiengesellschaft Chaudière de récupération de chaleur pour une centrale à turbine à gaz et à vapeur
EP0579061A1 (fr) * 1992-07-15 1994-01-19 Siemens Aktiengesellschaft Méthode de fonctionnement d'un système à turbines à gaz et à vapeur et système pour la mise en oeuvre de la méthode
DE19918347A1 (de) * 1999-04-22 2000-10-26 Asea Brown Boveri Verfahren und Vorrichtung zur schnellen Leistungssteigerung und Sicherstellung einer Zusatzleistung einer Gasturbinenanlage

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