EP1254302B1 - Method and device for evacuating a turbine condenser - Google Patents

Method and device for evacuating a turbine condenser Download PDF

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Publication number
EP1254302B1
EP1254302B1 EP00985216A EP00985216A EP1254302B1 EP 1254302 B1 EP1254302 B1 EP 1254302B1 EP 00985216 A EP00985216 A EP 00985216A EP 00985216 A EP00985216 A EP 00985216A EP 1254302 B1 EP1254302 B1 EP 1254302B1
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Prior art keywords
condenser
steam
turbine
condensate
jet pump
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EP00985216A
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German (de)
French (fr)
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EP1254302A1 (en
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Thomas König
Wolfgang Lehmann
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Siemens AG
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Siemens AG
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K9/00Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/02Arrangements or modifications of condensate or air pumps

Definitions

  • the invention relates to a method for evacuation a turbine condenser, in particular during start-up operation. It further relates to a device for implementation of the procedure.
  • the turbine or main capacitor is evacuated. It is by means of a so-called Start-up steam jet, in turn, according to the jet pump principle is supplied with motive steam, the turbine condenser and thus the steam turbine plant within z. B. evacuated from 1.0 bar to approx. 0.3 bar for half an hour. The the start-up jet pump leaving the steam-air mixture on the pressure side is conveyed to the outside via a pipeline. The Piping must be adjusted for the mixing temperature the steam-air mixture is designed and is due Environmental requirements to be met with a silencer equip.
  • the main disadvantage here is that usually the Water-steam cycle of the steam turbines extracted motive steam is lost, so that in the feedwater circuit of the Turbine condenser a corresponding amount of feed water must be refilled. This feed water loss increases with increasing number of starts and requires additional Costs for the necessary feedwater treatment.
  • the invention is therefore based on the object, a method for evacuating a turbine condenser, in particular during start-up operation, with which the specified Disadvantages avoided in a particularly simple manner are. Furthermore, one for carrying out the method particularly suitable device can be specified.
  • the driving steam condensing in the auxiliary condenser as condensate the feedwater circuit of the turbine condenser and thus the steam turbine plant fed again.
  • the air contained in the motive steam is expediently removed from the auxiliary capacitor.
  • the heating of the over the auxiliary capacitor keeps the flow of condensate within required limits, is the means of a condensate pump on the auxiliary capacitor guided condensate flow to a large extent of approx. 75% passed over the condenser tubes of the main capacitor.
  • the cooling water cooling of the main condenser becomes Re-cooling of the guided over the auxiliary capacitor condensate partial stream used.
  • the comparatively small share of about 25% of the condensate flow, d. H. the subsidized per unit time Condensate thus stands for the start-up operation required cooling of the drainage systems from the steam turbine to disposal.
  • the advantages achieved by the invention are in particular in that the water-steam cycle of a steam turbine removed and for evacuation of a turbine condenser inserted motive steam by its introduction into the Auxiliary capacitor of a steam turbine plant the cycle again is supplied. This is an undesirable Nachspeisung avoided by feed water in the circulation. About that In addition, a previously common silencer in steam jet air pump system for turbine and condensate venting additionally saved.
  • a main or turbine condenser 1 of a (not shown) Steam turbine plant is on the output side over the Condensate collector 2 connected to a condensate line 3, via a condensate pump 4 to an auxiliary capacitor. 5 connected on the input side.
  • On the output side is the Auxiliary capacitor 5 via a condensate line 6 with the Main capacitor 1 connected.
  • a circulation control valve 7 for setting the for a start-up operation required amount of cooling condensate.
  • To the condensate line 6 is an at z.
  • auxiliary capacitor 5 accumulating condensate K is about a condensate line 10 in the condensate collector 2 of the main capacitor 1 led.
  • the condensate line 10 via two branch lines 10a and 10b, in each of which a shut-off valve 11a, 11b, with a first pressure stage 5a or with a second pressure stage 5b of the auxiliary capacitor 5 connected.
  • a branch line for condensate return 10c of the condensate line 10 leads into the main capacitor 1, in which an exhaust steam line 12 from the (not shown) Steam turbine opens.
  • the first and second pressure stage 5a, 5b of the auxiliary capacitor 5 is in each case a further operating jet pump 20a or 20b assigned.
  • the operating jet pumps 17a, 20a and 17b, 20b are redundant.
  • the operating jet pumps 17a, 17b and 20a, 20b are each connected via a branch line 21a, 21b and 22a, 22b, in each of which a shut-off valve 23 is connected to a common motive steam line 24.
  • a shut-off valve 23 is connected to a common motive steam line 24.
  • the start-up jet pump 19 via a branch line 25, in turn, a check valve 26 is connected to the motive steam line 24.
  • the motive steam line 24 is another shut-off valve 27, which is taken over this guided motive steam D T in a manner not shown a water-steam cycle of the steam turbine.
  • the turbine condenser 1 is first evacuated.
  • motive steam D T is guided.
  • the amount of motive steam D T guided during the Ahfahr lies over the motive steam line 24 and via the branch line 25 per unit time is determined by the start-jet pump 19.
  • the start-up jet pump 19 is preferably connected on the pressure side via a connecting line 28 to the second pressure stage 5b of the auxiliary capacitor 5. While the motive steam D T condenses in the auxiliary capacitor 5, the entrained by the driving steam D T air L is discharged via a vent line 29 from the auxiliary capacitor 5 into the atmosphere. The condensing in the auxiliary capacitor 5 driving steam D T is introduced as condensate through the condensate line 10 in the condensate collector 2 of the main capacitor 1 and thus in the circuit.
  • the cooling water K ' which warms up during the heat exchange with the motive steam D within the auxiliary condenser 5, leaves the auxiliary condenser 5 via the condensate line 6.
  • the actuating or Control valve 7 To set the amount of condensate substream or cooling water K' carried per unit time via the auxiliary condenser 5, the actuating or Control valve 7. During start-up operation, the amount of cooling water K 'is set to about 50% to 70% of the rated condensate amount.

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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 Turbines (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

In order to evacuate a turbine condenser, air (L) contained in the turbine condenser (1) is suctioned using propellant steam from a starting jet pump (19). According to the invention, the propellant steam (D) and the air (L) are guided into an auxiliary condenser (5) which is arranged downstream from said turbine condenser (1)

Description

Die Erfindung bezieht sich auf ein Verfahren zum Evakuieren eines Turbinenkondensators, insbesondere im Anfahrbetrieb. Sie bezieht sich weiter auf eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for evacuation a turbine condenser, in particular during start-up operation. It further relates to a device for implementation of the procedure.

Beim Betrieb einer Dampfturbinenanlage wird der üblicherweise in einem Dampferzeuger produzierte und in einer Dampfturbine arbeitsleistend entspannte Dampf in einem der Dampfturbinen nachgeschalteten Kondensator kondensiert. Das im Turbinenkondensator anfallende Kondensat wird dem Wasser-Dampf-Kreislauf der Dampfturbine wieder zugeführt. Zum Absaugen von im Turbinen- oder Hauptkondensator enthaltener Luft während des Betriebs der Turbinenanlage werden häufig sogenannte Betriebs-Strahlpumpen eingesetzt, die an eine Treibdampfleitung angeschlossen und mit einem dem Hauptkondensator nachgeschalteten Hilfskondensator verbunden sind. An die nach dem Strahlpumpenprinzip arbeitenden Betriebs-Strahlpumpen sind saugseitig mit dem Hauptkondensator verbundene Luftleitungen angeschlossen.When operating a steam turbine plant is usually produced in a steam generator and in a steam turbine working performing relaxed steam in one of the steam turbines condensed downstream condenser. The in the turbine condenser accumulating condensate becomes the water-steam cycle the steam turbine fed again. For sucking off in the turbine or main condenser contained air during operation The turbine system often become so-called operating jet pumps used, which are connected to a motive steam line and with a main capacitor downstream Auxiliary capacitor are connected. To the after the jet pump principle working jet pumps are on the suction side connected to the main condenser connected air lines.

Während des Anfahrens oder Wiederanfahrens der Dampfturbine ist es erforderlich, dass zunächst der Turbinen- oder Hauptkondensator evakuiert wird. Dabei wird mittels eines sogenannten Anfahr-Dampfstrahlers, der wiederum nach dem Strahlpumpenprinzip mit Treibdampf beaufschlagt wird, der Turbinenkondensator und somit die Dampfturbinenanlage innerhalb z. B. einer halben Stunde von 1,0bar auf ca. 0,3bar evakuiert. Das die Anfahr-Strahlpumpe druckseitig verlassende Dampf-Luft-Gemisch wird über eine Rohrleitung ins Freie gefördert. Die Rohrleitung muss dabei für die sich einstellende Mischtemperatur des Dampf-Luft-Gemisches ausgelegt werden und ist aufgrund einzuhaltender Umweltauflagen mit einem Schalldämpfer auszurüsten.During startup or restart of the steam turbine It is necessary that first the turbine or main capacitor is evacuated. It is by means of a so-called Start-up steam jet, in turn, according to the jet pump principle is supplied with motive steam, the turbine condenser and thus the steam turbine plant within z. B. evacuated from 1.0 bar to approx. 0.3 bar for half an hour. The the start-up jet pump leaving the steam-air mixture on the pressure side is conveyed to the outside via a pipeline. The Piping must be adjusted for the mixing temperature the steam-air mixture is designed and is due Environmental requirements to be met with a silencer equip.

Wesentlicher Nachteil hierbei ist, dass der üblicherweise dem Wasser-Dampf-Kreislauf der Dampfturbinen entnommene Treibdampf verloren geht, so dass in den Speisewasserkreislauf des Turbinenkondensators eine entsprechende Menge an Speisewasser nachgespeist werden muss. Dieser Speisewasserverlust steigt mit zunehmender Anzahl an Anfahrvorgängen und erfordert zusätzliche Kosten für die notwendige Speisewasseraufbereitung.The main disadvantage here is that usually the Water-steam cycle of the steam turbines extracted motive steam is lost, so that in the feedwater circuit of the Turbine condenser a corresponding amount of feed water must be refilled. This feed water loss increases with increasing number of starts and requires additional Costs for the necessary feedwater treatment.

In der DE-B-1 109 722, die die Merkmale der Oberbegriffe der unabhängigen Patentansprüche 1 und 23 zeigt, wird eine Absaugeinrichtung für Turbinenkondensatoren von Dampfkraftanlagen mit schwanhender Blastung offenbart.In DE-B-1 109 722, the features of the preambles of the independent Claims 1 and 23 shows becomes a suction device for turbine condensers of steam power plants with fluctuating blast disclosed.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Evakuierung eines Turbinenkondensators, insbesondere während des Anfahrbetriebs, anzugeben, mit dem die genannten Nachteile in besonders einfacher Art und Weise vermieden sind. Des Weiteren soll eine zur Durchführung des Verfahrens besonders geeignete Vorrichtung angegeben werden.The invention is therefore based on the object, a method for evacuating a turbine condenser, in particular during start-up operation, with which the specified Disadvantages avoided in a particularly simple manner are. Furthermore, one for carrying out the method particularly suitable device can be specified.

Bezüglich des Verfahrens wird die genannte Aufgabe erfindungsgemäß gelöst durch die Merkmale des Anspruchs 1. Dazu wird der über die Anfahr-Strahlpumpe geführte Treibdampf zusammen mit der aus dem Turbinenkondensator abgesaugten Luft in den Hilfskondensator eingeleitet.With regard to the method, the stated object is achieved according to the invention solved by the features of claim 1. In addition the motive steam guided via the start-up jet pump is combined with the extracted from the turbine condenser air introduced into the auxiliary capacitor.

Dadurch wird der im Hilfskondensator kondensierende Treibdampf als Kondensat dem Speisewasserkreislauf des Turbinenkondensators und somit der Dampfturbinenanlage wieder zugeführt. Die im Treibdampf enthaltene Luft wird zweckmäßigerweise aus dem Hilfskondensator abgeführt.As a result, the driving steam condensing in the auxiliary condenser as condensate the feedwater circuit of the turbine condenser and thus the steam turbine plant fed again. The air contained in the motive steam is expediently removed from the auxiliary capacitor.

Um einen Anfahrbetrieb auch über mehrere Stunden zu ermöglichen, wird zweckmäßigerweise mindestens die Hälfte der dem Nennbetrieb entsprechenden Kondensat- oder Speisewassermenge für die Kühlung im Hilfskondensator zur Verfügung gestellt. Dies erfordert lediglich eine entsprechende Auslegung eines Regelventils, das den über den Hilfskondensator geführten Kondensatstrom aus dem Hauptkondensator üblicherweise einstellt.To enable a start-up operation even over several hours, is expediently at least half of the Rated operation corresponding amount of condensate or feed water provided for the cooling in the auxiliary capacitor. This requires only a corresponding interpretation of a Control valve that the guided over the auxiliary capacitor Condensate flow from the main capacitor usually sets.

Um zusätzlich die Aufwärmung des über den Hilfskondensator geführten Kondensatstroms in erforderlichen Grenzen zu halten, wird der mittels einer Kondensatpumpe über den Hilfskondensator geführte Kondensatstrom zu einem großen Teil von ca. 75% über die Kondensatorrohre des Hauptkondensators geführt. Dadurch wird die Kühlwasserkühlung des Hauptkondensators zur Rückkühlung des über den Hilfskondensator geführten Kondensatteilstroms genutzt. Der vergleichsweise kleine Anteil von ca. 25% des Kondensatstroms, d. h. der pro Zeiteinheit geförderten Kondensatmenge steht somit für die auch im Anfahrbetrieb erforderliche Kühlung der Entwässerungen aus der Dampfturbine zur Verfügung.In addition, the heating of the over the auxiliary capacitor keep the flow of condensate within required limits, is the means of a condensate pump on the auxiliary capacitor guided condensate flow to a large extent of approx. 75% passed over the condenser tubes of the main capacitor. As a result, the cooling water cooling of the main condenser becomes Re-cooling of the guided over the auxiliary capacitor condensate partial stream used. The comparatively small share of about 25% of the condensate flow, d. H. the subsidized per unit time Condensate thus stands for the start-up operation required cooling of the drainage systems from the steam turbine to disposal.

Bezüglich der Vorrichtung wird die genannte Aufgabe erfindungsgemäß gelöst durch die Merkmale des Anspruchs 3. Vorteilhafte Ausgestaltungen sind Gegenstand der auf diesen rückbezogenen Unteransprüche.With regard to the device, the stated object is achieved according to the invention solved by the features of claim 3. Advantageous Embodiments are the subject of this related subclaims.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass dem Wasser-Dampf-Kreislauf einer Dampfturbine entnommener und zur Evakuierung eines Turbinenkondensators eingesetzter Treibdampf durch dessen Einleiten in den Hilfskondensator einer Dampfturbinenanlage dem Kreislauf wieder zugeführt wird. Dadurch ist eine unerwünschte Nachspeisung von Speisewasser in den Kreislauf vermieden. Darüber hinaus wird ein bisher üblicher Schalldämpfer im Dampfstrahl-Luft-Pumpensystem für die Turbinen- und Kondensatentlüftung zusätzlich eingespart.The advantages achieved by the invention are in particular in that the water-steam cycle of a steam turbine removed and for evacuation of a turbine condenser inserted motive steam by its introduction into the Auxiliary capacitor of a steam turbine plant the cycle again is supplied. This is an undesirable Nachspeisung avoided by feed water in the circulation. About that In addition, a previously common silencer in steam jet air pump system for turbine and condensate venting additionally saved.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Darin zeigt die einzige Figur schematisch einen Turbinenkondensator mit nachgeschaltetem Hilfskondensator und Dampfstrahl-Luft-Pumpensystem. An embodiment of the invention will be described below a drawing explained in more detail. This shows the only figure schematically a turbine condenser with downstream Auxiliary Condenser and Steam Jet Air Pump System.

Ein Haupt- oder Turbinenkondensator 1 einer (nicht dargestellten) Dampfturbinenanlage ist ausgangsseitig über dessen Kondensatsammler 2 mit einer Kondensatleitung 3 verbunden, die über eine Kondensatpumpe 4 an einen Hilfskondensator 5 eingangsseitig angeschlossen ist. Ausgangsseitig ist der Hilfskondensator 5 über eine Kondensatleitung 6 mit dem Hauptkondensator 1 verbunden. In der Kondensatleitung 6 liegt ein Umwälz-Regelventil 7 zur Einstellung der für einen Anfahrbetrieb erforderlichen Kühlkondensatmenge. An die Kondensatleitung 6 ist eine an z. B. Dampferzeugerheizflächen führende Kondensatumlaufleitung 8 mit einem während des Anfahrbetriebs geschlossenen Regelventil 9 angeschlossen.A main or turbine condenser 1 of a (not shown) Steam turbine plant is on the output side over the Condensate collector 2 connected to a condensate line 3, via a condensate pump 4 to an auxiliary capacitor. 5 connected on the input side. On the output side is the Auxiliary capacitor 5 via a condensate line 6 with the Main capacitor 1 connected. In the condensate line 6 is located a circulation control valve 7 for setting the for a start-up operation required amount of cooling condensate. To the condensate line 6 is an at z. B. steam generator heating surfaces leading condensate transfer line 8 with a during start-up operation closed control valve 9 connected.

Im Hilfskondensator 5 sich ansammelndes Kondensat K wird über eine Kondensatleitung 10 in den Kondensatsammler 2 des Hauptkondensators 1 geführt. Dazu ist die Kondensatleitung 10 über zwei Zweigleitungen 10a und 10b, in denen jeweils ein Absperrventil 11a, 11b liegt, mit einer ersten Druckstufe 5a bzw. mit einer zweiten Druckstufe 5b des Hilfskondensators 5 verbunden. Eine zur Kondensatrückführung dienende Zweigleitung 10c der Kondensatleitung 10 führt in den Hauptkondensator 1, in den eine Abdampfleitung 12 von der (nicht dargestellten) Dampfturbine mündet.In the auxiliary capacitor 5 accumulating condensate K is about a condensate line 10 in the condensate collector 2 of the main capacitor 1 led. For this purpose, the condensate line 10 via two branch lines 10a and 10b, in each of which a shut-off valve 11a, 11b, with a first pressure stage 5a or with a second pressure stage 5b of the auxiliary capacitor 5 connected. A branch line for condensate return 10c of the condensate line 10 leads into the main capacitor 1, in which an exhaust steam line 12 from the (not shown) Steam turbine opens.

An den Hauptkondensator 1 sind drei Teilleitungen 14a, 14b und 14c einer diesen gemeinsamen Dampf/Luft-Gemisch-Rohrleitung 14 angeschlossen. Diese ist an ein Strahlpumpensystem 15 zum Evakuieren oder Entlüften des Hauptkondensators 1 und somit der (nicht dargestellten) Turbinenanlage geführt. Dazu ist die Leitung 14 über je ein Absperrventil 16a,16b an eine Betriebs-Strahlpumpe 17a bzw. 17b der ersten Druckstufe 5a des Hilfskondensators 5 geführt. Ober die Teilleitung 14c, in der wiederum ein Absperrventil 18 liegt, ist die mit dem Hauptkondensator 1 verbundene Leitung 14 an eine Anfahr-Strahlpumpe 19 geführt. Diese ist der zweiten Druckstufe 5b des Hilfskondensators 5 zugeordnet. To the main capacitor 1 are three sub-lines 14a, 14b and 14c of this common steam / air mixture piping 14 connected. This is to a jet pump system 15th for evacuating or venting the main capacitor 1 and thus the (not shown) turbine system out. To is the line 14 via a respective shut-off valve 16 a, 16 b to a Operating jet pump 17a and 17b of the first pressure stage 5a of the auxiliary capacitor 5 out. Above the sub-line 14c, in which in turn is a check valve 18, which is with the Main capacitor 1 connected line 14 to a start-up jet pump 19 led. This is the second pressure stage 5b assigned to the auxiliary capacitor 5.

Der ersten und zweiten Druckstufe 5a, 5b des Hilfskondensators 5 ist jeweils eine weitere Betriebs-Strahlpumpe 20a bzw. 20b zugeordnet. Die Betriebs-Strahlpumpen 17a, 20a und 17b, 20b sind redundant ausgeführt.The first and second pressure stage 5a, 5b of the auxiliary capacitor 5 is in each case a further operating jet pump 20a or 20b assigned. The operating jet pumps 17a, 20a and 17b, 20b are redundant.

Die Betriebs-Strahlpumpen 17a,17b und 20a,20b sind über je eine Zweigleitung 21a,21b und 22a,22b, in denen jeweils ein Absperrventil 23 liegt, an eine gemeinsame Treibdampfleitung 24 angeschlossen. Ebenso ist die Anfahr-Strahlpumpe 19 über eine Zweigleitung 25, in der wiederum ein Absperrventil 26 liegt, an die Treibdampfleitung 24 angeschlossen. In der Treibdampfleitung 24 liegt ein weiteres Absperrventil 27, wobei über dieses geführter Treibdampf DT in nicht näher dargestellter Art und Weise einem Wasser-Dampf-Kreislauf der Dampfturbine entnommen wird.The operating jet pumps 17a, 17b and 20a, 20b are each connected via a branch line 21a, 21b and 22a, 22b, in each of which a shut-off valve 23 is connected to a common motive steam line 24. Similarly, the start-up jet pump 19 via a branch line 25, in turn, a check valve 26 is connected to the motive steam line 24. In the motive steam line 24 is another shut-off valve 27, which is taken over this guided motive steam D T in a manner not shown a water-steam cycle of the steam turbine.

Während eines Anfahr-Betriebs der Dampfturbinenanlage wird zunächst der Turbinenkondensator 1 evakuiert. Dazu wird bei geöffneten Absperrventilen 27 und 26 über die Zweigleitung 25 und über die Anfahr-Strahlpumpe 19 Treibdampf DT geführt. Die während des Ahfahrbetriebs über die Treibdampfleitung 24 und über die Zweigleitung 25 pro Zeiteinheit geführte Menge an Treibdampf DT wird über die Anfahr-Strahlpumpe 19 bestimmt. Der über die nach dem Strahlpumpenprinzip arbeitenden Anfahr-Strahlpumpe 19 geführte Treibdampf DT wird zusammen mit Luft L, die infolge des sich innerhalb des Hauptkondensators 1 aufbauenden Unterdrucks über die Luftleitung 14 aus dem Hauptkondensator 1 abgesaugt wird, als Dampf-Luft-Gemisch DL in den Hilfskondensator 5 eingeleitet. Dazu ist die Anfahr-Strahlpumpe 19 druckseitig über eine Verbindungsleitung 28 vorzugsweise mit der zweiten Druckstufe 5b des Hilfskondensators 5 verbunden. Während der Treibdampf DT im Hilfskondensator 5 kondensiert, wird die vom Treibdampf DT mitgeführte Luft L über eine Entlüftungsleitung 29 aus dem Hilfskondensator 5 in die Atmosphäre abgeführt. Der im Hilfskondensator 5 kondensierende Treibdampf DT wird als Kondensat über die Kondensatleitung 10 in den Kondensatsammler 2 des Hauptkondensators 1 und somit in dessen Kreislauf eingeleitet.During a start-up operation of the steam turbine plant, the turbine condenser 1 is first evacuated. For this purpose, with the shut-off valves 27 and 26 open via the branch line 25 and the start-up jet pump 19, motive steam D T is guided. The amount of motive steam D T guided during the Ahfahrbetriebs over the motive steam line 24 and via the branch line 25 per unit time is determined by the start-jet pump 19. The driving steam D T guided via the start-up jet pump 19, which operates on the jet pump principle, together with air L, which is sucked out of the main condenser 1 via the air line 14 as a result of the negative pressure built up within the main condenser 1, as a vapor-air mixture DL in introduced the auxiliary capacitor 5. For this purpose, the start-up jet pump 19 is preferably connected on the pressure side via a connecting line 28 to the second pressure stage 5b of the auxiliary capacitor 5. While the motive steam D T condenses in the auxiliary capacitor 5, the entrained by the driving steam D T air L is discharged via a vent line 29 from the auxiliary capacitor 5 into the atmosphere. The condensing in the auxiliary capacitor 5 driving steam D T is introduced as condensate through the condensate line 10 in the condensate collector 2 of the main capacitor 1 and thus in the circuit.

Zum Kondensieren des Treibdampfs DT im Hilfskondensator 5 wird diesem als Kühlwasser ein über die Kondensatpumpe 4 geförderter Teilstrom an Kondensat K aus dem Hauptkondensator 1 zugeführt. Das sich während des Wärmetausches mit dem Treibdampf D innerhalb des Hilfskondensators 5 erwärmende Kühlwasser K' verlässt den Hilfskondensator 5 über die Kondensatleitung 6. Zur Einstellung der pro Zeiteinheit über den Hilfskondensator 5 geführten Menge des Kondensat-Teilstroms oder Kühlwassers K' dient das Stell- oder Regelventil 7. Während des Anfahr-Betriebs wird die Menge des Kühlwassers K' auf etwa 50% bis 70% der Nenn-Kondensatmenge eingestellt.For condensing the motive steam D T in the auxiliary capacitor 5 this is supplied as cooling water via the condensate pump 4 funded partial flow of condensate K from the main capacitor 1. The cooling water K ', which warms up during the heat exchange with the motive steam D within the auxiliary condenser 5, leaves the auxiliary condenser 5 via the condensate line 6. To set the amount of condensate substream or cooling water K' carried per unit time via the auxiliary condenser 5, the actuating or Control valve 7. During start-up operation, the amount of cooling water K 'is set to about 50% to 70% of the rated condensate amount.

Die redundant ausgeführten Betriebs-Strahlpumpen 17a,17b und 20a,20b, von denen z. B. die Strahlpumpen 17a und 20a während des Normalbetriebs der Dampfturbinenanlage arbeiten, während die beiden Strahlpumpen im Stand-by-Betrieb sind, arbeiten dabei ebenso wie die Anfahr-Strahlpumpe 19 nach dem Strahlpumpenprinzip. Während die Anfahr-Strahlpumpe 19 zur Evakuierung des Hauptkondensators 1 beim Anfahren der Dampfturbinenanlage dient, saugen die Betriebs-Strahlpumpen 17a, 20a oder 20a, 20b während des Normalbetriebs der Dampfturbinenanlage im Hauptkondensator 1 anfallende Luft L aus diesem ab.The redundant operating jet pumps 17a, 17b and 20a, 20b, of which z. B. the jet pumps 17a and 20a during the normal operation of the steam turbine plant work while the two jet pumps are in stand-by mode, working as well as the start-up jet pump 19 according to the jet pump principle. While the start-up jet pump 19 for evacuation of the main capacitor 1 when starting the steam turbine plant serves to suck the operating jet pumps 17a, 20a or 20a, 20b during normal operation of the steam turbine plant in the main capacitor 1 accumulating air L from this.

Claims (5)

  1. Method for evacuating a turbine condenser (1), in which air (L) contained in the turbine condenser (1) is extracted by means of propellant steam (D) conducted via a starting jet pump (19) and this air (L), together with the propellant steam (D), is conducted into an auxiliary condenser (5) connected downstream of the turbine condenser (1), characterized in that an adjustable partial condensate flow (K) is conveyed out of the turbine condenser (1) via the auxiliary condenser (5), which condenses the propellant steam (D) in the auxiliary condenser (5) and in that the condensate (K') is again supplied to the turbine condenser (1).
  2. Method according to Claim 1, in which the air (L) is removed from the auxiliary condenser (5).
  3. Device for evacuating a turbine condenser (1), in particular in order to carry out the method according to one of Claims 1 to 2, which condenser (1) is connected at its outlet end to an auxiliary condenser (5), and a starting jet pump (19), which is connected to a propellant steam main (24) and to the auxiliary condenser (5) at the pressure end and is connected to an air main (14) connected at the suction end to the main condenser (5), characterized in that the auxiliary condenser (5) is connected, at the inlet end via a condensate pump (4) and at the outlet end via a setting valve (7), to the turbine condenser (1).
  4. Device according to Claim 3, characterized in that at least one operational jet pump (17, 20) is connected in parallel with the starting jet pump (19).
  5. Device according to Claim 4, characterized in that the or each operational jet pump (17a, 17b; 20a, 20b) is embodied so as to provide redundancy.
EP00985216A 2000-02-09 2000-12-20 Method and device for evacuating a turbine condenser Expired - Lifetime EP1254302B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00985216A EP1254302B1 (en) 2000-02-09 2000-12-20 Method and device for evacuating a turbine condenser

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP00102718 2000-02-09
EP00102718 2000-02-09
EP00985216A EP1254302B1 (en) 2000-02-09 2000-12-20 Method and device for evacuating a turbine condenser
PCT/EP2000/013039 WO2001059265A1 (en) 2000-02-09 2000-12-20 Method and device for evacuating a turbine condenser

Publications (2)

Publication Number Publication Date
EP1254302A1 EP1254302A1 (en) 2002-11-06
EP1254302B1 true EP1254302B1 (en) 2005-07-27

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EP00985216A Expired - Lifetime EP1254302B1 (en) 2000-02-09 2000-12-20 Method and device for evacuating a turbine condenser

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US (1) US6755023B2 (en)
EP (1) EP1254302B1 (en)
JP (1) JP4579479B2 (en)
CN (1) CN1325767C (en)
DE (1) DE50010850D1 (en)
WO (1) WO2001059265A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060254280A1 (en) * 2005-05-12 2006-11-16 Siemens Westinghouse Power Corporation Combined cycle power plant using compressor air extraction
US8112997B2 (en) * 2008-04-28 2012-02-14 Siemens Energy, Inc. Condensate polisher circuit
US8069667B2 (en) * 2009-02-06 2011-12-06 Siemens Energy, Inc. Deaerator apparatus in a superatmospheric condenser system
CN101666250B (en) * 2009-09-25 2012-04-11 天津大学 System for improving low-temperature heat source power generation capacity by using injection pump
DE102011114776B4 (en) * 2011-10-01 2014-10-23 Walter Aumann Method for operating a steam power plant
EP2589764A1 (en) * 2011-11-04 2013-05-08 Siemens Aktiengesellschaft Power plant assembly with integrated steam turbine with hogging ejector and method for starting-up a power-plant assembly with steam turbine
EP2642089B1 (en) 2012-03-19 2016-08-24 General Electric Technology GmbH Method for operating a power plant
DE102012023898A1 (en) * 2012-12-07 2014-06-12 Man Diesel & Turbo Se Method for operating plant for production of mechanical and electrical energy, has turbine in which steam is supplied and capacitor with closed vacuum breaker valve is evacuated
WO2014196231A1 (en) * 2013-06-04 2014-12-11 シャープ株式会社 Display device

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US2927428A (en) 1952-01-26 1960-03-08 Sala Antillo Geothermic central plant for the production of energy, with uncondensable gases compressor-extractors directly operated by the engines producing the energy
DE1109722B (en) * 1959-03-21 1961-06-29 Siemens Ag Extraction device for turbine condensers
JPS5968502A (en) * 1982-10-13 1984-04-18 Hitachi Ltd Method and device for deaerating condensate in electric power plant
GB8325813D0 (en) 1983-09-27 1983-10-26 Hick Hargreaves & Co Ltd Condenser vacuum system
DE8708383U1 (en) * 1986-08-20 1988-10-20 Körting Hannover AG, 3000 Hannover Steam turbine plant

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JP2004502893A (en) 2004-01-29
US6755023B2 (en) 2004-06-29
CN1325767C (en) 2007-07-11
WO2001059265A1 (en) 2001-08-16
EP1254302A1 (en) 2002-11-06
CN1434895A (en) 2003-08-06
DE50010850D1 (en) 2005-09-01
JP4579479B2 (en) 2010-11-10
US20030000215A1 (en) 2003-01-02

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