EP0013045A1 - Installation de production de vapeur - Google Patents

Installation de production de vapeur Download PDF

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Publication number
EP0013045A1
EP0013045A1 EP79200749A EP79200749A EP0013045A1 EP 0013045 A1 EP0013045 A1 EP 0013045A1 EP 79200749 A EP79200749 A EP 79200749A EP 79200749 A EP79200749 A EP 79200749A EP 0013045 A1 EP0013045 A1 EP 0013045A1
Authority
EP
European Patent Office
Prior art keywords
water
control valve
separator
line
steam
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.)
Granted
Application number
EP79200749A
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German (de)
English (en)
Other versions
EP0013045B1 (fr
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
Sulzer AG
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(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0013045A1 publication Critical patent/EP0013045A1/fr
Application granted granted Critical
Publication of EP0013045B1 publication Critical patent/EP0013045B1/fr
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.
  • a steam generator system according to the preamble of claim 1.
  • German patent specification 802 458 such a system is known in which all water is drained from the separator through a single, first control valve which serves to keep the level in the separator at a constant level To keep height.
  • a secondary line with a valve is then connected to the water outlet line of the separator downstream of this first control valve, via which, if necessary, water can be drained from the separator.
  • the circuit feature according to claim 2 has the advantage that the water that is drained through the secondary line, but is already desalinated, is not lost.
  • the above-mentioned contaminants are retained by the condensate cleaning system arranged between the condenser and the feed water tank.
  • the capacitor is protected.
  • the isolator is preferably provided with an injection cooler.
  • the arrangement according to claim 7 allows a single level transmitter on the water separator to be used.
  • the dimensioning rule according to claim 8 allows the invention to be used in systems in which the separator is operated dry during normal operation.
  • the circuit according to claim 9 brings considerable savings in safety blow-off means in the case of the separator driven dry at full load.
  • Condensate separators according to claim 10 also called condensate plugs, are known separator mechanisms which allow water, but not steam, to escape. They have largely proven themselves in practice and are reliable and inexpensive redundant means for preventing steam from entering the feed water tank.
  • FIG. 1 leads from a feed water tank 1, a feed line 2 with feed pump 3 and two high pressure preheaters 4 and 5 to the secondary side of a heat exchanger 6 and from there to an economizer 10 of a steam generator 11.
  • the exit of the economizer 10 is via a line 14 with the input connected to an evaporator 15, which forms the wall tubing of a combustion chamber 16.
  • a furnace 17 opens into this combustion chamber 16
  • Evaporator 15 leads a line 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 arranged in the steam generator 11 in the space above the combustion chamber 16.
  • a live steam line 30 leads from the end of the superheater 24 via a live steam line 31 to a turbine 32 which is seated on the same shaft with a generator 33.
  • a condenser 35 with a hotwell 36 is connected at the low pressure end of the turbine 32.
  • 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 seated on the feed water tank 1.
  • a safety blow-off device 47 sits on the feed water tank 1 is represented by a safety valve.
  • a pressure sensor (not shown) on the feed water tank, which acts on valves located 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.
  • Nom outlet 21 of the separator 20 leads a water outlet line 50 back to the feed water tank 1 via the primary side of the heat exchanger 6, via a check valve 51 and a first control valve 52.
  • this water outlet line 50 is connected between the heat exchanger 6 and the first control valve 52, in the present exemplary embodiment still upstream of the check valve 51, a secondary line 55, which leads via a second control valve 56 to a water-steam separator 57, the steam outlet 58 of which leads to the steam chamber of the condenser 35 and its water outlet 59 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 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 valve 56.
  • the regulators are designed in such a way that when the water level rises, the valve 52 first opens and then the valve 56, while when the water level falls, the valve 56 closes first and then the valve 52.
  • the opening and closing movements of the two valves can adjoin one another or overlap, but there can 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 being connected via a third control valve 77 between the second control valve and the injection point 61 into the secondary line 55 ′′. flows into.
  • This third control valve 77 is actuated by a level sensor 78 via a controller 79.
  • the regulating device 78, 79 for the valve 77 is designed analogously to the regulating devices for the regulating valves 52 and 56 and is set such that the third regulating valve opens at the third position when the level rises and closes at the first position when the level falls.
  • the device described allows the evaporator from zero to a limit load, e.g. 30%, to feed with an approximately constant amount of feed water, the excess water is returned from the separator, and to drive above this load with a dry separator.
  • a limit load e.g. 30%
  • the circuit is also suitable for the known concept, in which the evaporator is above the mentioned limit load of e.g. 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 passes directly past the heat exchanger 6 via the discharge line 76 flows to the capacitor 35.
  • This has the advantage that the heat exchanger 6 can be built smaller; As a disadvantage, however, it must be taken into account that more heat is lost in the condenser during a certain short section of the start-up time. It is a question of the operational management of the system whether it is economical to provide the discharge line 76 with valve 77.
  • the pressure transducer mentioned acting on valves in the tapping lines to the high-pressure preheaters, can be provided, through which one, the other or both of these valves are now driven in the throttling or closed position. As a result, the temperature of the feed water at the inlet of the heat exchanger 6 drops, so
  • the water separator 20 and the control valves 52, 56 and 77 are shown.
  • the level sensor 70, 71 and 78 instead of the level sensor 70, 71 and 78, however, only a single level sensor 80 is arranged on the separator 20, the output of which acts on three proportional elements 81, 82 and 83 connected in parallel, the output of which leads to the control valves 52, 56 and 77, respectively.
  • the proportional elements 81 to 83 convert the input signal x into an output signal y according to the diagram shown on them. It is easy to see that when the value x rises from 0, the valve 52 first opens approximately linearly and finally reaches an asymptotic area. At the beginning of this area, the control valve 56 then begins to open approximately linearly. As soon as this valve reaches its asymptotic region, the valve 77 begins to open.
  • control valves 52, 56 and 77 could also be controlled in cascade, in that the position of the valve 52 acts as a control variable on the position of the valve 56, during which position influences the valve 77.
  • the attempt to reduce the size of the safety blow-off device 47 on the feed water container 1 creates the risk that, in the event of a fault-related opening 52 of the first control valve 52 under full load and a dry separator 20, the pressure in the feed water container 1 increases rapidly and the feed water container 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 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 attached in series with the first control valve, which is controlled by the pressure in the feed water tank 1 as soon as it exceeds a certain limit value.
  • an expedient solution can also be seen in arranging, apart from the safety blow-off device dimensioned according to claim 9, a tear membrane, the cross-section of which, together with that of the blow-off device, is designed for the full steam flow arising in the above-mentioned malfunction in the feed water tank.

Landscapes

  • 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 Installation de production de vapeur Expired EP0013045B1 (fr)

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 true EP0013045A1 (fr) 1980-07-09
EP0013045B1 EP0013045B1 (fr) 1984-03-07

Family

ID=4389272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200749A Expired EP0013045B1 (fr) 1978-12-22 1979-12-11 Installation de production de vapeur

Country Status (10)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244363A1 (de) * 1982-12-01 1984-06-07 Deutsche Babcock Werke AG, 4200 Oberhausen Wasserstandsmesser fuer einen zwangsdurchlaufdampferzeuger
EP2933444A1 (fr) * 2014-04-16 2015-10-21 IFP Energies nouvelles Dispositif de contrôle d'un circuit fermé fonctionnant selon un cycle de Rankine et procédé utilisant un tel dispositif.

Families Citing this family (17)

* 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 (fr) * 1982-03-31 1986-04-30
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 (fr) 1987-12-22 1988-02-18 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
EP0425717B1 (fr) * 1989-10-30 1995-05-24 Siemens Aktiengesellschaft Générateur de vapeur à passage unique
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 (fr) * 2002-03-01 2016-05-25 GEZE GmbH Commande de porte
US8181463B2 (en) * 2005-10-31 2012-05-22 Ormat Technologies Inc. Direct heating organic Rankine cycle
US9581328B2 (en) * 2007-03-22 2017-02-28 Nooter/Eriksen, Inc. High efficiency feedwater heater
EP2182278A1 (fr) * 2008-09-09 2010-05-05 Siemens Aktiengesellschaft Générateur de vapeur en continu
EP2690760A1 (fr) * 2012-07-23 2014-01-29 Alstom Technology Ltd Machine électrique
EP2868872B1 (fr) * 2013-10-31 2018-09-05 General Electric Technology GmbH Système et procédé de préchauffage d'eau d'alimentation
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
US10393369B2 (en) * 2014-04-28 2019-08-27 General Electric Company System and method for fluid medium preheating
JP6254968B2 (ja) * 2015-03-06 2017-12-27 ヤンマー株式会社 動力発生装置

Citations (6)

* 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
US3172266A (en) * 1963-02-26 1965-03-09 Gilbert Associates Automatic start-up devices for a steamelectric generating plant
DE1230037B (de) * 1962-06-27 1966-12-08 Ver Kesselwerke Ag Anfahrvorrichtung fuer eine Dampfkraftanlage mit Zwangdurchlaufkessel
US3338053A (en) * 1963-05-20 1967-08-29 Foster Wheeler Corp Once-through vapor generator start-up system
DE1290940B (de) * 1965-09-18 1969-03-20 Duerrwerke Ag Einrichtung zum Anfahren und fuer den Schwachlastbetrieb von Zwangdurchlaufdampferzeugern

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Patent Citations (6)

* 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
DE1290940B (de) * 1965-09-18 1969-03-20 Duerrwerke Ag Einrichtung zum Anfahren und fuer den Schwachlastbetrieb von Zwangdurchlaufdampferzeugern

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244363A1 (de) * 1982-12-01 1984-06-07 Deutsche Babcock Werke AG, 4200 Oberhausen Wasserstandsmesser fuer einen zwangsdurchlaufdampferzeuger
EP2933444A1 (fr) * 2014-04-16 2015-10-21 IFP Energies nouvelles Dispositif de contrôle d'un circuit fermé fonctionnant selon un cycle de Rankine et procédé utilisant un tel dispositif.
FR3020090A1 (fr) * 2014-04-16 2015-10-23 IFP Energies Nouvelles Dispositif de controle d'un circuit ferme fonctionnant selon un cycle de rankine et procede utilisant un tel dispositif

Also Published As

Publication number Publication date
YU301179A (en) 1982-10-31
AU5400379A (en) 1980-06-26
FI67753B (fi) 1985-01-31
FI793736A (fi) 1980-06-23
CH635184A5 (de) 1983-03-15
CA1129277A (fr) 1982-08-10
JPS6136121B2 (fr) 1986-08-16
FI67753C (fi) 1985-05-10
US4290390A (en) 1981-09-22
DE2966769D1 (en) 1984-04-12
AU531456B2 (en) 1983-08-25
JPS5589604A (en) 1980-07-07
PL219838A1 (fr) 1980-09-08
EP0013045B1 (fr) 1984-03-07

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