EP0013045B1 - Dampferzeugeranlage - Google Patents

Dampferzeugeranlage Download PDF

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Publication number
EP0013045B1
EP0013045B1 EP79200749A EP79200749A EP0013045B1 EP 0013045 B1 EP0013045 B1 EP 0013045B1 EP 79200749 A EP79200749 A EP 79200749A EP 79200749 A EP79200749 A EP 79200749A EP 0013045 B1 EP0013045 B1 EP 0013045B1
Authority
EP
European Patent Office
Prior art keywords
water
control valve
separator
steam
plant according
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.)
Expired
Application number
EP79200749A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0013045A1 (de
Inventor
Heinz Dr. Juzi
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4389272&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0013045(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0013045A1 publication Critical patent/EP0013045A1/de
Application granted granted Critical
Publication of EP0013045B1 publication Critical patent/EP0013045B1/de
Expired 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
    • 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
    • F01K3/20—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by combustion gases of main boiler
    • F01K3/22—Controlling, e.g. starting, stopping

Definitions

  • the invention relates to a steam generator system according to the preamble of claim 1.
  • the object of the invention is to improve the steam generator system of the type mentioned at the outset in such a way that the disadvantages are avoided.
  • this object is achieved by the features according to the characterizing part of claim 1. This will prior to lowering the pressure of the water flowing in the water drain line. H. upstream of the first control valve, the water in the heat exchanger is cooled to a temperature which is substantially below the saturated steam temperature, so that there is no longer any risk of cavitation for the first control valve. Because of the staggered operation of the two control valves, the duration during which the second valve is flowed through is considerably reduced. Since the second valve is in the secondary line, which can also branch off from the water outlet line upstream of the heat exchanger, the gradation prevents rapid erosion of the second control valve in this arrangement as well.
  • the staggered use of the two control valves allows the first control valve to be made smaller for a given amount of water to be fed to the feed water vessel. This in turn allows the safety blow-off device in the feed water vessel to be made smaller. Both are associated with significant savings.
  • a steam generator system is known from FIG. 2 of DE-AS 1290940, in which - similar to the characterizing part of the new claim 1 - the heat exchanger is connected upstream of the first control valve in the flow direction of the water from the separator and means for influencing two depending on the water content of the heat exchanger Control valves are provided in such a way that when the level in the heat exchanger rises, the first and then the second control valve opens first, and that when the level falls, the second control valve closes and then the first control valve closes.
  • the heat exchanger there is designed as a control preheater in which - depending on the amount of water covering the heating surface - more or less steam is condensed.
  • the purpose of this is to influence the amount of steam flowing through a post-heater depending on the hot steam temperature and thus the temperature of the steam.
  • the invention is a water-water heat exchanger, which is flooded with water on the primary side. The primary-side Wa SSE is therefore cooled down considerably.
  • the arrangement according to the claim further reduces the risk of cavitation erosions occurring at the second control valve.
  • a larger amount of heat can be recuperated in heat transfer.
  • the claim 3 gives a dimensioning rule for the cross section of the first control valve, which has the additional advantage of a smaller dimensioning of the safety blow-off device.
  • the first control valve is to be designed in such a way that it does not exceed 125% of the water accumulated under these conditions in the separator under the pressure and temperature conditions of the specified minimum load. H. a maximum of 18.7% of the full-load feed water can let through, but not the full 30% that temporarily flows into the separator when starting, or the even larger amount of water that briefly gets into the separator when the steam starts up
  • the capacitor is protected.
  • the isolator is preferably provided with an injection cooler.
  • the arrangement according to claim 6 allows to get by with a single level sensor on the water separator.
  • the dimensioning rule according to claim 7 allows the invention to be used in systems in which the separator is operated dry at full load.
  • the circuit according to claim 8 brings considerable savings to safety blow-off devices in the event that the separator is driven dry at full load.
  • Condensate separators according to claim 9, also called condensate plugs, are known separator elements which probably allow water to escape, but not steam. They have largely proven themselves in practice and are reliable and inexpensive, redundant means for preventing steam from entering the feed water tank.
  • a feed line 2 with feed pump 3 and two high-pressure preheaters 4 and 5 leads from a feed water tank 1 to the secondary side of a heat exchanger 6 and from there to an economizer 10 of a steam generator 11.
  • the economizer 10 exits via a line 14 connected to an evaporator 15, which forms the wall tube of a combustion chamber 16.
  • a furnace 17 opens into this combustion chamber 16.
  • the evaporator 15 is connected to a water separator 20, which has an outlet 21 for separated water at the bottom and is provided at the top with a steam discharge line 22, which leads to a superheater 24, which is in the steam generator 11 in the room is arranged above the combustion chamber 16.
  • a live steam line 30 leads from the superheater 24 via a live steam valve 31 to a turbine 32 which is seated on a common shaft with a generator 33.
  • a condenser 35 with a hotwell 36 is connected.
  • a condensate line 40 leads via a first condensate pump 41, a condensate cleaning system 42, a second condensate pump 43 and a low-pressure preheater 44 to a degassing tower 45 arranged on the feed water tank 1.
  • a safety blow-off device 47 is located on the feed water tank 1 is represented by a safety valve.
  • a pressure transmitter (not shown) on the feed water tank 1, which acts on valves fitted in the bleed steam lines of the high-pressure preheaters 4 and 5 in the sense that the steam pressure in the feed water tank is regulated by influencing the temperature of the feed water at the inlet of the heat exchanger 6.
  • a water outlet line 50 leads via the primary side of the heat exchanger 6, a check valve 51 and a first control valve 52 to the feed water tank 1.
  • a secondary line 55 is connected, which leads via a second control valve 56 to a water-steam separator 57, the steam outlet 58 of which is connected to the steam chamber of the condenser 35 and the water outlet 59 of which is connected to the hotwell 36.
  • An injection water line 60 branches off from the condensate line 40 between the condensate cleaning system 42 and the second condensate pump 43 and opens into the secondary line 55 at an injection point 61 directly upstream of the water-steam separator 57.
  • a second level transmitter 70 and 71 are arranged, the outputs of which are connected to a controller 72 and 73, respectively.
  • the output of the controller 72 influences the first control valve 52, while the output of the second controller 73 acts on the second control valve 56.
  • the regulators 72 and 73 are designed such that when the water level rises, the first regulating valve 52 opens first and then the second regulating valve 56, while when the water level falls, the second regulating valve 56 and then the first regulating valve 52 close first.
  • the opening and closing movements of the two control valves can adjoin or overlap; however, there may also be a margin between the two strokes.
  • a water discharge line 76 is connected to the water outlet line 50 between the outlet 21 and the heat exchanger 6, said water discharge line 76 or directly via a third control valve 77 between the second control valve 56 and the injection point 61 opens into the water-steam separator 57.
  • This third control valve 77 is actuated by a level sensor 78 via a controller 79, which is designed analogously to the controllers 72 and 73 and is set such that the third control valve 77 opens in third place when the level rises and closes in first place when the level falls.
  • the first control valve 52 is able to discharge the entire amount of water separated in the separator 20.
  • the level in the separator drops so far that the second control valve 56 closes. This recuperates all of the heat contained in the returned water. If the steam generator output rises further, the water content at the outlet of the evaporator 15 drops. The level in the separator 20 drops further, and the first control valve 52 is also moved successively into the closed position. Finally, slightly overheated steam enters the separator 20, which evaporates the water still present there.
  • the system described allows the evaporator 15 from zero to a limit load, for. B. 30% to feed with approximately constant amount of feed water, the excess water from the separator 20 is returned to the feed water tank 1, and to drive above this load with a dry separator.
  • the system is also suitable for the known concept, according to which the evaporator 15 above the limit load of z. B. 30% is driven with low humidity.
  • the device functions as described, but with the difference that at high water levels in the water separator 20, part of the water flows through the discharge line 76 flows past the heat exchanger directly to the condenser 35.
  • E; is a question of the operational management of the system, ot it is economical to provide the discharge line 76 with the third control valve 77.
  • control valves 52, 56 and 77 could also be controlled in cascade by the position of the first control valve 52 acting as a control variable on the position of the second control valve 56, during the position of which influences the third control valve 77.
  • the attempt to reduce the size of the safety blow-off device 47 on the feed water tank 1 creates the risk that, when the first control valve 52 is opened due to a fault, the pressure in the feed water tank 1 rises rapidly at full load and the dry separator 20 and the feed water tank could explode.
  • the first control valve 52 - or a shut-off valve arranged in series therewith - can be influenced by an aggregate state, which is arranged in the water outlet line 50 and closes the first control valve or, if appropriate, the shut-off valve when steam occurs therein.
  • a static or dynamic condensing plug can also be arranged in series with the first control valve 52, which only allows water to flow through, but not steam.
  • a so-called negative safety valve can also be installed in series with the first control valve 52, which is actuated in a closing sense by the pressure in the feed water tank 1 as soon as this pressure exceeds a certain limit value. It may also be expedient to arrange a tear membrane in addition to the safety blow-off device dimensioned according to claim 8, the cross-section of which is designed, together with that of the blow-off device 47, for the full steam flow occurring in the feed water tank in the event of a malfunction.

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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 Steam Boilers And Waste-Gas Boilers (AREA)
EP79200749A 1978-12-22 1979-12-11 Dampferzeugeranlage Expired EP0013045B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH13096/78 1978-12-22
CH1309678A CH635184A5 (de) 1978-12-22 1978-12-22 Dampferzeugeranlage.

Publications (2)

Publication Number Publication Date
EP0013045A1 EP0013045A1 (de) 1980-07-09
EP0013045B1 true EP0013045B1 (de) 1984-03-07

Family

ID=4389272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200749A Expired EP0013045B1 (de) 1978-12-22 1979-12-11 Dampferzeugeranlage

Country Status (10)

Country Link
US (1) US4290390A (ja)
EP (1) EP0013045B1 (ja)
JP (1) JPS5589604A (ja)
AU (1) AU531456B2 (ja)
CA (1) CA1129277A (ja)
CH (1) CH635184A5 (ja)
DE (1) DE2966769D1 (ja)
FI (1) FI67753C (ja)
PL (1) PL219838A1 (ja)
YU (1) YU301179A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042952A (zh) * 2014-04-16 2015-11-11 Ifp新能源公司 用于控制以兰金循环工作的闭合回路的设备及使用该设备的方法

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI68458C (fi) * 1980-12-23 1985-09-10 Sulzer Ag Tvaongsstyrdaonggeneratoranlaeggning
CH655548B (ja) * 1982-03-31 1986-04-30
DE3244363A1 (de) * 1982-12-01 1984-06-07 Deutsche Babcock Werke AG, 4200 Oberhausen Wasserstandsmesser fuer einen zwangsdurchlaufdampferzeuger
US4552099A (en) * 1984-10-25 1985-11-12 Westinghouse Electric Corp. Anticipatory boiler feedpump suction head controller system
DE3863153D1 (de) * 1987-09-21 1991-07-11 Siemens Ag Verfahren zum betreiben eines durchlaufdampferzeugers.
DE8716847U1 (de) 1987-12-22 1988-02-18 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Feucht-Farbwerk für Offset-Druckmaschinen
DE58909259D1 (de) * 1989-10-30 1995-06-29 Siemens Ag Durchlaufdampferzeuger.
AT394627B (de) * 1990-08-27 1992-05-25 Sgp Va Energie Umwelt Verfahren zum anfahren eines waermetauschersystems zur dampferzeugung sowie waermetauschersystem zur dampferzeugung
DE19907451A1 (de) * 1999-02-22 2000-08-24 Abb Alstom Power Ch Ag Verfahren zum Anfahren eines Zwangdurchlauf-Abhitzekessels und Vorrichtung zur Durchführung des Verfahrens
EP1340877B1 (de) * 2002-03-01 2016-05-25 GEZE GmbH Türantrieb
US8181463B2 (en) * 2005-10-31 2012-05-22 Ormat Technologies Inc. Direct heating organic Rankine cycle
KR101317222B1 (ko) * 2007-03-22 2013-10-15 누터/에릭슨 인코퍼레이티드 고효율 급수 가열기
EP2182278A1 (de) * 2008-09-09 2010-05-05 Siemens Aktiengesellschaft Durchlaufdampferzeuger
EP2690760A1 (en) * 2012-07-23 2014-01-29 Alstom Technology Ltd Electric machine
EP2868872B1 (en) * 2013-10-31 2018-09-05 General Electric Technology GmbH Feedwater preheating system and method
DE102014206012A1 (de) * 2014-03-31 2015-10-01 Mtu Friedrichshafen Gmbh Verfahren zur Regelung eines Dampfgehalts eines in einem Verdampfer eines Systems zur Durchführung eines thermodynamischen Kreisprozesses erhitzten Arbeitsmediums, Steuereinrichtung für ein System, System für einen thermodynamischen Kreisprozess, und Anordnung aus einer Brennkraftmaschine und einem System
MX2016014151A (es) * 2014-04-28 2017-02-15 General Electric Technology Gmbh Sistema y metodo para precalentamiento de un medio fluido.
JP6254968B2 (ja) * 2015-03-06 2017-12-27 ヤンマー株式会社 動力発生装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE802458C (de) * 1949-08-03 1951-02-12 Babcock & Wilcox Dampfkessel W Zwanglauf-Dampferzeuger
GB816765A (en) * 1956-11-22 1959-07-15 Sulzer Ag Steam power plants
DE1230037B (de) * 1962-06-27 1966-12-08 Ver Kesselwerke Ag Anfahrvorrichtung fuer eine Dampfkraftanlage mit Zwangdurchlaufkessel
US3172266A (en) * 1963-02-26 1965-03-09 Gilbert Associates Automatic start-up devices for a steamelectric generating plant
US3338053A (en) * 1963-05-20 1967-08-29 Foster Wheeler Corp Once-through vapor generator start-up system
US3212477A (en) * 1963-09-05 1965-10-19 Combustion Eng Forced flow steam generator and method of starting same
US3313111A (en) * 1965-04-30 1967-04-11 Electrodyne Res Corp Startup system for a once through steam generator including a startup balancing heatexchanger
DE1290940B (de) * 1965-09-18 1969-03-20 Duerrwerke Ag Einrichtung zum Anfahren und fuer den Schwachlastbetrieb von Zwangdurchlaufdampferzeugern
CH517266A (de) * 1969-12-24 1971-12-31 Sulzer Ag Verfahren zum Gleitdruckbetrieb eines Zwanglaufdampferzeugers und Zwanglaufdampferzeugeranlage zum Durchführen des Verfahrens
DE2735463C2 (de) * 1977-08-05 1982-03-04 Kraftwerk Union AG, 4330 Mülheim Durchlaufdampferzeuger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042952A (zh) * 2014-04-16 2015-11-11 Ifp新能源公司 用于控制以兰金循环工作的闭合回路的设备及使用该设备的方法
CN105042952B (zh) * 2014-04-16 2020-09-15 Ifp新能源公司 用于控制以兰金循环工作的闭合回路的设备及使用该设备的方法

Also Published As

Publication number Publication date
US4290390A (en) 1981-09-22
AU5400379A (en) 1980-06-26
CA1129277A (en) 1982-08-10
EP0013045A1 (de) 1980-07-09
AU531456B2 (en) 1983-08-25
JPS5589604A (en) 1980-07-07
FI793736A (fi) 1980-06-23
FI67753C (fi) 1985-05-10
YU301179A (en) 1982-10-31
JPS6136121B2 (ja) 1986-08-16
DE2966769D1 (en) 1984-04-12
FI67753B (fi) 1985-01-31
CH635184A5 (de) 1983-03-15
PL219838A1 (ja) 1980-09-08

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