CN101627185A - Method and device for controlling a power plant - Google Patents
Method and device for controlling a power plant Download PDFInfo
- Publication number
- CN101627185A CN101627185A CN 200780019167 CN200780019167A CN101627185A CN 101627185 A CN101627185 A CN 101627185A CN 200780019167 CN200780019167 CN 200780019167 CN 200780019167 A CN200780019167 A CN 200780019167A CN 101627185 A CN101627185 A CN 101627185A
- Authority
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- China
- Prior art keywords
- parts
- power station
- heat exchange
- gas turbine
- temperature
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- 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.)
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Classifications
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- 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
- F01K13/006—Auxiliaries or details not otherwise provided for
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- 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
- F01K23/101—Regulating means specially adapted therefor
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- 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
-
- 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
- F05D2260/94—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF]
-
- 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
- F05D2260/94—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF]
- F05D2260/941—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF] particularly aimed at mechanical or thermal stress reduction
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
Disclosed is a method for improving the start-up behavior and the shutdown times of a power plant (2) comprising several components, i.e. a boiler (4), a steam turbine (6), and an optional gas turbine (8). In said method, the temperature of at least one part of one of the components (4, 6, 8) is controlled during a standstill of the power plant (2) by transferring heat with the aid of a fluid flow (11).
Description
Technical field
The present invention relates to a kind of method and apparatus that is used to control the power station, the power station comprises a plurality of formation circuit parts, that is comprises boiler, steam turbine and selectable gas turbine.
Background technique
Combustion gas and steaming steam turbine installation or power station (GUD-Kraftwerk) are often as so-called half-peak duty value power station.A key character in this half-peak duty value power station is the starting time, that is until time of the plant capacity that reaches operational regulation.Therefore, especially Duan starting time is favourable, because it can just might participate in energy adjustment market for example through a few minutes or hour preparation.Participating in minute power station of preparation must provide the power of regulation in (in Germany for example after 15 minutes) after a little a few minutes.Under hour situation of preparation, should after 60 minutes, provide power.
Starting time and time out of service take place in member heating or cooling back, and wherein, and heating or cooling are subjected to the influence (natural cooling) of member environment temperature usually.
In addition, with to compare with the power quantity-produced electric current that the main linely connected power sup ply merchant makes an appointment, the electric current of producing between the equipment transient period is often second-rate.Here, the equipment transient state refers to this state, and this moment, the power station was changed another power level into from a power level, for example when starting.Therefore this transient state need be remained short as far as possible.When for example stopping, that is when member cools off, also wish cooling as far as possible apace, thereby shorten the time out of service that needs as far as possible for the purpose of checking.
Summary of the invention
The technical problem to be solved in the present invention provide a kind ofly improve in the power station, especially starting characteristic and the method for dead time in the GUD-Kraftwerk.Another technical problem that will solve provides a kind of equipment that is particularly useful for implementing this method.
The technical problem of method is solved by a kind of method that is used to control the power station is provided according to the present invention, the power station comprises the parts of a plurality of formation work cycle, that is comprise boiler, steam turbine and selectable gas turbine, wherein at run-stopping status, the member temperature of at least one member of one of parts is crossed heat exchange control by a kind of fluid flow.
The present invention is based on following consideration, that is, the heat that exists in the power station after parts are closed can be used on purpose regulating the member temperature of the member of parts when out of service.With interrelated on the function and constitute each structural element of a unit or structural element in groups, be called the member of parts or work cycle here.Adopt a kind of fluid stream here, it is transferred to another member or another parts with the heat of member in power station or parts, thereby initiatively in the described parts at least one is remained a desired temperatures level at run-stopping status.
Here, run-stopping status is meant a period of time, and the power station is in reduced power state down during this period, and the rotor in power station rotates under the slow-speed of revolution or may stop fully at this moment.
The advantage that this method is outstanding is, under the situation of some member temperature of ACTIVE CONTROL parts or parts, parts stop or starting process no longer depend on existed at that time-when initiatively influencing-member temperature.Exactly, pass through active heat transfer in the temperature of these members of run-stopping status, better shut down or the corresponding service condition of starting characteristic in As soon as possible Promising Policy and power station.
For control member temperature effectively, heat exchange is implemented by the additional control circle of fluid stream.Described control circle is different with the work cycle in power station, and its feature is independent pipeline and adjusts element.The circulation that separates with work cycle can be very easy to control.
In view of economic especially expansion design regulation, the power plant component that regulate temperature constitutes thermal source and low-temperature receiver in control circle, and their temperature is preferably regulated mutually by heat exchange.Carry out the transfer of heat of inside, power station here by fluid stream, can utilize the heat of parts this moment, heats at least one member of another parts when the run-stopping status of power station.If when another parts were in lower temperature levels and can extract heat from the parts than heat at least, the method in then this control power station can be used for cooling off parts simultaneously.This realizes that by suitable flow direction of control fluid stream at this moment, fluid stream feed goes out the heat of the parts of heat, and with these heat discharges in colder parts.It is just much of that control circle only connects two parts that are in the different temperatures level in power station in this case.But also can comprise more a plurality of parts and adopt external heat source or low-temperature receiver.
For the run-stopping status in power station, it is significant being distinguished between two class run-stopping status.The first kind is a run-stopping status in short-term.Thisly often reduce based on current drain and the state that takes place, be also referred to as temporarily below and stop at night or at weekend.Another kind of is power station decline power when operation troubles in the time period of predesignating or in case of necessity, so that implement the R and M operation.This service mode in the power station will safeguard that the parts that maybe will repair must be cooled to ambient temperature always, in order to implementing described operation.From these understanding, by a kind of preferred scheme, during the operation suspension of power station, fluid stream is used for keeping at least one high-temperature of described parts, so that can realize the quick starting process after operation is finished.By another kind of preferred scheme, during the service mode of power station, fluid stream is used for cooling off as far as possible apace one of parts at least, so that shortened to the dead time that is used to repair common cool time.
If preferably member is heated independently of one another and cools off, then obtain a kind of especially effectively transfer of heat, this moment is low especially for expending of cooling or heater.The purpose that will reach is in this case, and the member of parts is remained the even temperature level.For example, the rotor of gas turbine remains on the identical substantially temperature levels with casing, and in other words, casing must be regulated by active temperature and keep warm, because casing cools off sooner usually.In addition, heat can be only from the extracted region of parts regulation: for example, after the power station is closed, can only utilize the heat that exists in the steam turbine high-pressure section, be used for gas turbine being remained on than higher temperature levels at the power station run-stopping status.
Advantageously, the heat exchange between the parts is implemented by water vapour.Water vapour there is series of advantages as the fluid stream of heat-carrying: the low price of water, environmental protection and be easy to processing.
By another kind of form of implementation, the heat exchange between the parts is implemented by air.Air is a kind of cheap heat carrying agent equally, and it exists in a large number.In addition, air can not cause etching problem to wanting thermoregulator parts.
By preferred design, a kind of open system is adopted in heat exchange.Use the new magnitude of recruitment of heat carrying agent in open cycle continuously, they are released after flowing through control circle and after possible cooling.
Preferably a kind of closed system is adopted in heat exchange, this moment in control circle all the time circuit be the same amount of heat carrying agent.
Also can use a kind of semi-open type system in addition, this moment is release portion heat carrying agent and add the new magnitude of recruitment of heat carrying agent off and on.
The technical problem of relevant devices is solved by a kind of equipment of controlling the power station according to the present invention, the power station comprises the parts of a plurality of formation work cycle, that is comprise boiler, steam turbine and selectable gas turbine, wherein, at run-stopping status, at least two parts interconnect by pipeline for heat exchange.At advantage and the preferred form of implementation that method has described in detail, also can be diverted to equipment by meaning.
In design with gas turbine, by a kind of preferred expansion design, gas turbine is connected with boiler by first pipeline for heat exchange, and steam turbine is connected with boiler by second pipeline for heat exchange, and gas turbine is connected with steam turbine by the 3rd pipeline for heat exchange.Formed a kind of internal pipeline system here, on flow technique, coupled together by each parts of this pipe-line system and two other parts.These pipelines and associated adjustment element especially are designed to, and make can flow along both direction at each ducted fluid stream.
Description of drawings
Describe two kinds of embodiments of the present invention in detail by accompanying drawing below.Wherein:
Fig. 1 schematically shows out the structure of power station pipe-line system under the operation suspension state of power station; And
Fig. 2 schematically shows out the structure of power station shown in Figure 1 pipe-line system during the service mode of power station.
The identical part of effect adopts same reference character in the accompanying drawing.
Embodiment
Fig. 1 has schematically shown out power station 2, and it comprises boiler 4, steam turbine 6 and gas turbine 8 in the present embodiment.Therefore, the type design of GUD-Kraftwerk is pressed in power station 2, wherein utilizes the used heat of gas turbine 8 to produce water vapour in boiler 4, drives steam turbine 6 by water vapour.Therefore boiler 4, steam turbine 6 and gas turbine 8 constitute the parts of the work cycle in power station 2.For this reason, these parts 4,6,8 connect in the known manner by the fluid line that does not here illustrate of work cycle.Replace GUD-Kraftwerk and also can adopt a kind of power station that includes only steam turbine and boiler as parts.The main points here are that the power station comprises two parts at least, and they have different temperature changing processes after operation the time has different temperature or closing.
In the embodiment shown in fig. 1, the control circle in the pipe-line system 10 is a kind of closed cycle, wherein uses the water vapour of established amount, and water vapour is not all changed or the part replacing when control circle is worked.Yet also can use the open type control circle, infeed the already used water vapour of new water vapour and release portion this moment at work continuously.The supply of water vapour also can be undertaken by the time lag, has a kind of semi-open type control circle this moment.
Embodiment shown in Figure 1 is illustrated in the operation of control circle under the 2 operation suspension states of power station, for example reduces based on the electric current demand and power when descending at night or at weekend when power station 2.Because run-stopping status continues several hours or several days, so advantageously, even fast cooling parts 4,6,8 are still being remained between down period on the high temperature levels, in order that in that later whole power station can faster starting.In this case, the heat that still exists in the power station at run-stopping status distributes by fluid stream and shifts, and remains on a temperature levels high during than natural cooling thereby will cool off parts 4,6,8 faster.
In illustrated embodiment, gas turbine 8 means it is the fastest parts of cooling under the situation of active heat transfer not.Meanwhile, 4 in boiler is the slowest parts of cooling under 2 run-stopping status of power station.Therefore constitute low-temperature receiver and boiler 4 formation thermals source at the inner gas turbine 8 of control circle.In order to start power station 2 more quickly, steam turbine 6 and gas turbine 8 keep warm by the heat that exists in the boiler 4 during operation suspension.For reaching this point, pipe-line system 10 has a pipeline 12 of drawing from boiler 4, and its bifurcated is two pipeline 12a, 12b.Pipeline 12a feeds steam turbine 6, and the water vapour stream from boiler is regulated by valve 14 in this pipeline 12a.Pipeline 12b also is provided with valve 16, and at the state that this valve 16 is opened, 4 directly supply with gas turbine 8 to small part water vapour from boiler.Water vapour in steam turbine 6 pipeline 18 of flowing through is drawn from steam turbine 6.Same bifurcated is two pipeline 18a and 18b to pipeline 18 in the downstream.Pipeline 18a imports in the pipeline 12b, thereby at the state that valve 20 is opened, will join from the water vapour of several Baidu of having of steam turbine 6 temperature in the water vapour stream in the pipeline 12b, and this steam mixture is pumped in the gas turbine.Import in the pipeline 22 at the pipeline 18b of opposite side, the water vapour of cooling pumps into boiler 4 again through piping 22 in gas turbine 8.
Here, water vapour means described heat carrying agent, and it is sent heat and heat is supplied with steam turbine 6 and gas turbine 8 especially from boiler 4.Therefore, steam turbine is adjusted into the vapor (steam) temperature of expecting in starting process, and the member of gas turbine 8 also is heated at run-stopping status, thus with run-stopping status under do not have active temperature to regulate the power station compare, can realize rapider and start power station 2 economically.
Fig. 2 represents the power station 2 according to Fig. 1, wherein uses the control circle in pipe-line system 10, so that make gas turbine 8 and/or steam turbine 6 be cooled to ambient temperature as far as possible apace during service mode.In 2 whens operation, be adjusted into temperature above 1000 ℃ in the gas turbine 8 in the power station.Meanwhile, operating temperature is lower than 1000 ℃ in boiler 4 and in the steam turbine 6.So after power station 2 was closed, gas turbine 8 was in a temperature levels more much higher than boiler 4 and steam turbine 6.Therefore can utilize the water vapour that flows through boiler 4 and steam turbine 6, the temperature in the gas turbine 8 are placed on the level of miscellaneous part 4,6, and cooling gas turbine 8 thus.
In this case, there is the boiler of minimum operating temperature to become low-temperature receiver, and has the gas turbine 8 of maximum temperature to mean it is thermal source.From the colder water vapour of boiler 4, pump into steam turbine 6 via pipeline 12 and later its 12a of branch of process.The member of water vapour cooling steam turbine 6 there.Then, now by the heated water vapour with the member heat exchange of the high temperature of steam turbine 6, the state of opening at valve 24 pumps into boiler 4 again by pipeline 18b.
Meanwhile, supply with gas turbine 8, the there member of water vapour cooling gas turbine 8 along pipeline 12b by valve 16 from the water vapour of boiler 4.The present heated water vapour by heat exchange equally draws back boiler 4 through pipeline 22.This active cooling by steam turbine 6 and gas turbine 8 can make them shut down in the relatively shorter time, implements the inspection that needs thus more quickly.
Be used for the pipe-line system 10 that parts 4,6,8 active temperature in power station 2 are regulated especially is designed to, make each member heating and cooling independently of one another of parts 4,6,8.For example, the 2 operation suspension states in the power station by from the heat of boiler 4 or by the heat of combination boiler and heat from steam turbine 6 high-pressure sections, make steam turbine 6 low-pressure sections keep warm according to Fig. 1.In addition, by same principle, the higher high-pressure section of only temperature of cooling steam turbine 6 initiatively during service mode.
Claims (12)
1. method that is used to control power station (2), the power station comprises the parts of a plurality of formation work cycle, that is comprise boiler (4), steam turbine (6) and selectable gas turbine (8), it is characterized by: at run-stopping status, the member temperature of at least one member of one of parts (4,6,8) is controlled by heat exchange by fluid stream (11).
2. in accordance with the method for claim 1, it is characterized by, described heat exchange is implemented by the additional control circle of fluid stream (11).
3. in accordance with the method for claim 2, it is characterized by, parts (4,6,8) constitute thermal source and low-temperature receiver in control circle, and their temperature is regulated mutually by heat exchange.
4. according to the described method of one of all claims in prostatitis, it is characterized by, during the operation suspension of power station (2), fluid stream (11) is used for keeping at least one high-temperature of described parts (4,6,8).
5. according to the described method of one of all claims in prostatitis, it is characterized by, during the service mode of power station (2), fluid stream (11) is used for cooling off as far as possible apace at least one of described parts (4,6,8).
6. according to the described method of one of all claims in prostatitis, it is characterized by, the member of described parts (4,6,8) is heated independently of one another and cools off.
7. according to the described method of one of all claims in prostatitis, it is characterized by, the heat exchange between the described parts (4,6,8) is implemented by water-vapour cycle.
8. according to the described method of one of claim 1 to 6, it is characterized by, the heat exchange between the described parts (4,6,8) is implemented by air.
9. according to the described method of one of all claims in prostatitis, it is characterized by, a kind of open system is adopted in heat exchange.
10. according to the described method of one of claim 1-8, it is characterized by, a kind of closed system is adopted in heat exchange.
11. equipment that is used to control power station (2), the power station comprises the parts of a plurality of formation work cycle, that is comprise boiler (4), steam turbine (6) and selectable gas turbine (8), it is characterized by: at run-stopping status, at least two parts (4,6,8) interconnect by pipeline (12,12a, 12b) for heat exchange.
12. according to the described equipment of claim 11, it is characterized by, power station (2) comprises a gas turbine (8), and gas turbine (8) is connected with boiler (4) by first pipeline (12,12b) for heat exchange, steam turbine (6) is connected with boiler (4) by second pipeline (12,12a) for heat exchange, and gas turbine (8) passes through the 3rd pipeline (18,12b) for heat exchange and is connected with steam turbine (6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06011275 | 2006-05-31 | ||
| EP06011275.2 | 2006-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101627185A true CN101627185A (en) | 2010-01-13 |
Family
ID=38779019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200780019167 Pending CN101627185A (en) | 2006-05-31 | 2007-05-22 | Method and device for controlling a power plant |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2024609A2 (en) |
| CN (1) | CN101627185A (en) |
| WO (1) | WO2007137960A2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013205053B4 (en) * | 2013-03-21 | 2015-05-07 | Kraftwerke Mainz-Wiesbaden AG | Method for operating a power plant having a water-steam cycle |
| DE102014221566A1 (en) * | 2014-10-23 | 2016-04-28 | Siemens Aktiengesellschaft | Holding concept for rapid startup of the steam turbine in combined cycle power plants using a heat accumulator |
| DE102014221563A1 (en) * | 2014-10-23 | 2016-04-28 | Siemens Aktiengesellschaft | Method for shortening the startup process of a steam turbine |
| CN107683365A (en) * | 2015-06-02 | 2018-02-09 | 西门子公司 | For the method and flowing guidance unit of the cooling for slowing down flowing guidance unit |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE570366C (en) * | 1928-01-03 | 1933-02-15 | Bbc Brown Boveri & Cie | Method for heating steam or gas turbines by introducing a heated heat exchanger into the interior of the turbine |
| US4047005A (en) * | 1974-08-13 | 1977-09-06 | Westinghouse Electric Corporation | Combined cycle electric power plant with a steam turbine having a throttle pressure limiting control |
| JPS585415A (en) * | 1981-06-30 | 1983-01-12 | Toshiba Corp | Steam pressure controller for combined-cycle power plant |
| JPS60247001A (en) * | 1984-05-23 | 1985-12-06 | Hitachi Ltd | Thermal stress control device for steam turbine casing |
| US5131230A (en) * | 1991-06-17 | 1992-07-21 | Westinghouse Electric Corp. | System for providing early warning of potential water induction events and enabling rapid steam turbine restarts |
| US5172553A (en) * | 1992-01-21 | 1992-12-22 | Westinghouse Electric Corp. | Convective, temperature-equalizing system for minimizing cover-to-base turbine casing temperature differentials |
| US5473898A (en) * | 1995-02-01 | 1995-12-12 | Westinghouse Electric Corporation | Method and apparatus for warming a steam turbine in a combined cycle power plant |
| WO2004113684A1 (en) * | 2003-06-16 | 2004-12-29 | Siemens Aktiengesellschaft | Turbomachine, in particular gas turbine |
-
2007
- 2007-05-22 WO PCT/EP2007/054905 patent/WO2007137960A2/en active Application Filing
- 2007-05-22 CN CN 200780019167 patent/CN101627185A/en active Pending
- 2007-05-22 EP EP07729348A patent/EP2024609A2/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007137960A2 (en) | 2007-12-06 |
| WO2007137960A3 (en) | 2009-09-03 |
| EP2024609A2 (en) | 2009-02-18 |
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Open date: 20100113 |