EP0232465A1 - Heat exchanger, particularly a steam-heated reheater - Google Patents

Heat exchanger, particularly a steam-heated reheater Download PDF

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Publication number
EP0232465A1
EP0232465A1 EP86114195A EP86114195A EP0232465A1 EP 0232465 A1 EP0232465 A1 EP 0232465A1 EP 86114195 A EP86114195 A EP 86114195A EP 86114195 A EP86114195 A EP 86114195A EP 0232465 A1 EP0232465 A1 EP 0232465A1
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Prior art keywords
tubes
condensate
tube
heat exchanger
steam
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EP86114195A
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German (de)
French (fr)
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EP0232465B1 (en
Inventor
Hubert Dipl.-Ing. Nowak
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Balcke Duerr AG
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Balcke Duerr AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G1/00—Steam superheating characterised by heating method
    • F22G1/005—Steam superheating characterised by heating method the heat being supplied by steam

Definitions

  • the invention relates to a heat exchanger, in particular steam-heated reheater, with a tube bundle arranged between a distribution and a collecting chamber for the heat-emitting medium containing inert gases, which condenses in the tubes and thereby heats the medium acting on the tubes from the outside.
  • Such heat exchangers are known in various designs. Since the medium to be heated, for example the steam to be overheated, acts more on the outer tubes of the tube bundle than the tubes lying in the core of the tube bundle, the condensation effect of the steam in the tube bundle core is less than in the peripheral areas. As a result, residual steam still escapes at the end of the core tubes under certain working conditions. This residual steam has a tendency to flow back into the pipes in the edge region, since these pipes are exposed to a greater temperature difference and thus exert a suction effect on the residual steam emerging from the core pipes.
  • the invention has for its object to prevent backflow of the residual steam from the core tubes of the tube bundle with simple technical means and without a deterioration in the overall efficiency in a heat exchanger of the type described.
  • the solution to this problem by the invention is characterized in that at least the backflow-prone tubes of the tube bundle lying in the edge region are passed through the tube disk of the collecting chamber and protrude with their end into a condensate collecting trough which is provided with a condensate overflow lying above the tube ends .
  • the means used to prevent this backflow are extremely simple, since it is only necessary to make the tubes of the tube bundle longer in new heat exchangers and to pass them through the tube disk of the collecting chamber or to add pieces of tube to the existing tubes in the case of subsequent conversions that extend into the condensate - Pass down the collecting pan.
  • the condensate collecting trough is a simple component which can be accommodated in the collecting chamber of the tube bundle without difficulty, so that the technical outlay for the proposal according to the invention is also limited.
  • the condensate collecting trough is annular and its condensate overflow is arranged in the region of the core tubes of the tube bundle.
  • the invention proposes to jagged the edge of the condensate overflow. This creates strands of condensate that do not hinder reliable suction of the inert gases.
  • the exemplary embodiment is a standing steam-heated reheater, which comprises a bundle of vertically extending tubes 1 for the heat-emitting medium, namely the steam. At the upper end, these pipes 1 are connected to a distribution chamber 2, at the lower end to a collection chamber 3. " The steam containing inert gases is fed to the distribution chamber 2 through a connection piece 4. The condensate formed in the pipes 1 due to heat emission reaches the collection chamber 3 , from which it is withdrawn through a drain 5.
  • the tube bundle formed from the tubes 1 is surrounded by a housing jacket 6, to which steam to be heated is fed from below in the exemplary embodiment, as can be seen from the two arrows in the drawing.
  • This steam acts on the pipes 1 from the outside; the heated steam leaves the housing jacket 6 through a steam nozzle 7.
  • these tubes 1a which are at risk of backflow and which are in the edge region of the tube bundle are passed through the tube disk 3a of the collecting chamber 3. They protrude with their end into a condensate collecting trough 8, which is thus designed in a ring shape in the exemplary embodiment.
  • a condensate collecting trough 8 such a liquid level is constantly maintained that the individual ends of the pipes 1 a are closed by the condensate present. Residual steam emerging from the ends of the inner tubes 1b cannot therefore enter the lower ends of the outer tubes 1a.
  • the liquid level is maintained in that a condensate overflow 9 is arranged above the ends of the tubes 1a.
  • the edge of the condensate overflow 9 is jagged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Power Steering Mechanism (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Chimneys And Flues (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1. A heat exchanger, more particularly a stream-heated reheater, having a tube bunch for the heat-yielding medium which contains inert gases, the tube bunch extending vertically between a top distributing chamber and a bottom collecting chamber, the tube bunch being flowed through in the same direction, the medium condensing in the tubes and thus heating the medium operative on the outside of the tubes, characterised in that at least those tubes (1a) of the tube bunch (1) which are disposed in the edge zone and which are at risk from backflow pass through the tube plate (3a) of the collecting chamber (3) and extend at their end into a condensate collecting sump (8) which has a condensate overflow (9) disposed above the tube ends.

Description

Die Erfindung betrifft einen Wärmetauscher, insbesondere dampfbeheizten Zwischenüberhitzer, mit einem zwischen einer Verteil- und einer Sammelkammer angeordneten Rohrbündel für das wärmeabgebende, Inertgase enthaltende Medium, das in den Rohren kondensiert und hierdurch das die Rohre von außen beaufschlagende Medium erwärmt.The invention relates to a heat exchanger, in particular steam-heated reheater, with a tube bundle arranged between a distribution and a collecting chamber for the heat-emitting medium containing inert gases, which condenses in the tubes and thereby heats the medium acting on the tubes from the outside.

Derartige Wärmetauscher sind in verschiedenen Ausführungen bekannt. Da das aufzuwärmende Medium, beispielsweise der zu überhitzende Dampf, die außenliegenden Rohre des Rohrbündels stärker beaufschlagt als die im Kern des Rohrbündels liegenden Rohre, ist die Kondensationswirkung des Dampfes im Rohrbündelkern geringer als in den Randgebieten. Dies führt dazu, daß am Ende der Kernrohre unter bestimmten Arbeitsbedingungen noch Restdampf austritt. Dieser Restdampf hat die Tendenz, in die Rohre des Randbereiches zurückzuströmen, da diese Rohre einer größeren Temperaturdifferenz ausgesetzt sind und damit eine Saugwirkung auf den aus den Kernrohren austretenden Restdampf ausüben.Such heat exchangers are known in various designs. Since the medium to be heated, for example the steam to be overheated, acts more on the outer tubes of the tube bundle than the tubes lying in the core of the tube bundle, the condensation effect of the steam in the tube bundle core is less than in the peripheral areas. As a result, residual steam still escapes at the end of the core tubes under certain working conditions. This residual steam has a tendency to flow back into the pipes in the edge region, since these pipes are exposed to a greater temperature difference and thus exert a suction effect on the residual steam emerging from the core pipes.

Eine derartige Rückströmung von Restdampf, der aus dem hinteren Ende der Kernrohre des Rohrbündels austritt, ist unerwünscht, weil die Rückströmung nicht nur der Strömungsrichtung des Kondensats in den Außenrohren des Rohrbündels entgegenwirkt und Kondensatpfropfen bilden kann, sondern auch im Dampf enthaltenes Inertgas zurückhält, das nicht kondensierbar ist und in den Rohren des Randbereiches auf diese Weise Inertgaspfropfen bildet, die im Extremfall eine große Kondensationsfläche blockieren und zu einem mit der Zeit zunehmenden Leistungsabfall des Wärmetauschers führen.Such a backflow of residual steam, which emerges from the rear end of the core tubes of the tube bundle, is undesirable because the backflow not only counteracts the direction of flow of the condensate in the outer tubes of the tube bundle and can form condensate plugs, but also retains inert gas contained in the steam, which does not condense is bar and in this way forms inert gas plugs in the tubes of the edge area, which in extreme cases block a large condensation area and lead to an increase in the performance of the heat exchanger which increases over time.

Um diese bekannten Nachteile zu verhindern, wurden bereits Einbauten in die Rohre des Wärmetauschers vorgeschlagen, die durch eine unterschiedliche Drosselwirkung eine Vergleichmäßigung bei der Verteilung des zu kondensierenden Dampfes bewirken sollen. Neben einem großen technischen Aufwand haben diese Maßnahmen den Nachteil, daß sie störanfällig sind, nur für einen bestimmten Lastfall optimal ausgelegt werden können und durch den unvermeidbaren Druckverlust einen generellen Leistungsabfall des Wärmetauschers zur Folge haben.In order to prevent these known disadvantages, installations in the tubes of the heat exchanger have already been proposed, which are intended to bring about an equalization in the distribution of the steam to be condensed by a different throttling effect. In addition to a great technical outlay, these measures have the disadvantage that they are susceptible to faults, can only be optimally designed for a specific load case and, as a result of the unavoidable pressure loss, result in a general drop in performance of the heat exchanger.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Wärmetauscher der eingangs beschriebenen Art eine Rückströmung des Restdampfes aus den Kernrohren des Rohrbündels mit einfachen technischen Mitteln und ohne eine Verschlechterung des Gesamtwirkungsgrades zu verhindern.The invention has for its object to prevent backflow of the residual steam from the core tubes of the tube bundle with simple technical means and without a deterioration in the overall efficiency in a heat exchanger of the type described.

Die Lösung dieser Aufgabenstellung durch die Erfindung ist dadurch gekennzeichnet, daß zumindest die rückströmungsgefährdeten, im Randbereich liegenden Rohre des Rohrbündels durch die Rohrscheibe der Sammelkammer hindurchgeführt sind und mit ihrem Ende in eine Kondensat-Sammelwanne hineinragen, die mit einem oberhalb der Rohrenden liegenden Kondensatüberlauf versehen ist.The solution to this problem by the invention is characterized in that at least the backflow-prone tubes of the tube bundle lying in the edge region are passed through the tube disk of the collecting chamber and protrude with their end into a condensate collecting trough which is provided with a condensate overflow lying above the tube ends .

Durch die Verlängerung der Rohre des Rohrbündels, mindestens im rückströmungsgefährdeten Randbereich, über die Rohrscheibe der Sammelkammer hinaus und die Einführung dieser Rohrenden in eine Kondensat-Sammelwanne, die wegen des oberhalb der Rohrenden liegenden Kondensatüberlaufs im Betrieb des Wärmetauschers mit Kondensat gefüllt ist, wird ein Abschluß jedes rückströmungsgefährdeten Rohres erreicht, so daß aus den Kernrohren austretender Restdampf nicht in die Rohre des Randbereiches zurückströmen und dort zu den beschriebenen Funktionsstörungen führen kann. Die zur Verhinderung dieser Rückströmung eingesetzten Mittel sind denkbar einfach, da es lediglich erforderlich ist, bei neuen Wärmetauschern die Rohre des Rohrbündels länger auszubilden und durch die Rohrscheibe der Sammelkammer hindurchzuführen bzw. bei nachträglichen Umbauten an die vorhandenen Rohre Rohrstücke anzusetzen, die bis in die Kondensat-Sammelwanne herabreichen. Bei der Kondensat-Sammelwanne handelt es sich um ein einfaches Bauteil, das ohne Schwierigkeiten in der Sammelkammer des Rohrbündels untergebracht werden kann, so daß sich auch insoweit der technische Aufwand für den erfindungsgemäßen Vorschlag in Grenzen hält.By extending the tubes of the tube bundle, at least in the edge area at risk of backflow, beyond the tube disk of the collecting chamber and introducing these tube ends into a condensate collecting trough, which due to the condensate overflow lying above the tube ends during operation of the heat exchanger is filled with condensate, a completion of each backflow-prone tube is achieved, so that residual steam escaping from the core tubes does not flow back into the tubes of the edge area and can lead there to the described malfunctions. The means used to prevent this backflow are extremely simple, since it is only necessary to make the tubes of the tube bundle longer in new heat exchangers and to pass them through the tube disk of the collecting chamber or to add pieces of tube to the existing tubes in the case of subsequent conversions that extend into the condensate - Pass down the collecting pan. The condensate collecting trough is a simple component which can be accommodated in the collecting chamber of the tube bundle without difficulty, so that the technical outlay for the proposal according to the invention is also limited.

Bei einer bevorzugten Ausbildung der Erfindung ist die Kondensat-Sammelwanne ringförmig ausgebildet und ihr Kondensatüberlauf im Bereich der Kernrohre des Rohrbündels angeordnet. Die erfindungsgemäßen Maßnahmen werden somit auf einfache Weise auf die rückströmungsgefährdeten Rohre des Rohrbündels beschränkt.In a preferred embodiment of the invention, the condensate collecting trough is annular and its condensate overflow is arranged in the region of the core tubes of the tube bundle. The measures according to the invention are thus restricted in a simple manner to the tubes of the tube bundle which are at risk of backflow.

Um die Bildung eines Wasserschleiers beim Verlassen des Kondensats über den Kondensatüberlauf der Sammelwanne zu vermeiden, der das Abziehen der Inertgase erschweren würde, wird mit der Erfindung schließlich vorgeschlagen, den Rand des Kondensatüberlaufs gezackt auszubilden. Hierdurch entstehen Kondensatsträhnen, die eine zuverlässige Absaugung der Inertgase nicht behindern.Finally, in order to avoid the formation of a water curtain when leaving the condensate via the condensate overflow of the collecting trough, which would make it more difficult to remove the inert gases, the invention proposes to jagged the edge of the condensate overflow. This creates strands of condensate that do not hinder reliable suction of the inert gases.

Mit der Erfindung wird insgesamt die Weiterbildung eines bekannten Wärmetauschers geschaffen, welche die Möglichkeit einer Rückströmung von aus den Kernrohren des Rohrbündels austretendem Restdampf in die Rohre des Randbereiches zuverlässig verhindert, so daß sich in diesen Randbereichsrohren keine Inertgase ansammeln können, wodurch zugleich eine Blockierung von Kondensationsflächen verhindert und ein mit der Zeit zunehmender Leistungsabfall des Wärmetauschers vermieden wird.Overall, the development of a known heat exchanger is created with the invention, which is the possibility a backflow of residual steam escaping from the core tubes of the tube bundle into the tubes of the edge region is reliably prevented, so that no inert gases can accumulate in these edge region tubes, which at the same time prevents blocking of condensation surfaces and prevents the heat exchanger from decreasing in performance over time.

Auf der Zeichnung ist ein Ausführungsbeispiel des erfindungsgemäßen Wärmetauschers in einem Längsschnitt dargestellt.In the drawing, an embodiment of the heat exchanger according to the invention is shown in a longitudinal section.

Beim Ausführungsbeispiel handelt es sich um einen stehenden dampfbeheizten Zwischenüberhitzer, der ein Bündel aus senkrecht verlaufenden Rohren 1 für das wärmeabgebende Medium, nämlich den Dampf umfaßt. Am oberen Ende sind diese Rohre 1 an eine Verteilkammer 2 angeschlossen, am unteren Ende an eine Sammelkammer 3."Der Inertgase enthaltende Dampf wird der Verteilkammer 2 durch einen Stutzen 4 zugeführt. Das durch Wärmeabgabe in den Rohren 1 entstehende Kondensat gelangt in die Sammelkammer 3, aus der es durch einen Abfluß 5 abgezogen wird.The exemplary embodiment is a standing steam-heated reheater, which comprises a bundle of vertically extending tubes 1 for the heat-emitting medium, namely the steam. At the upper end, these pipes 1 are connected to a distribution chamber 2, at the lower end to a collection chamber 3. " The steam containing inert gases is fed to the distribution chamber 2 through a connection piece 4. The condensate formed in the pipes 1 due to heat emission reaches the collection chamber 3 , from which it is withdrawn through a drain 5.

Das aus den Rohren 1 gebildete Rohrbündel ist von einem Gehäusemantel 6 umgeben, dem beim Ausführungsbeispiel von unten her aufzuwärmender Dampf zugeführt wird, wie dies die beiden Pfeile in der Zeichnung erkennen lassen. Dieser Dampf beaufschlagt die Rohre 1 von außen; der aufgewärmte Dampf verläßt den Gehäusemantel 6 durch einen Dampfstutzen 7.The tube bundle formed from the tubes 1 is surrounded by a housing jacket 6, to which steam to be heated is fed from below in the exemplary embodiment, as can be seen from the two arrows in the drawing. This steam acts on the pipes 1 from the outside; the heated steam leaves the housing jacket 6 through a steam nozzle 7.

Da der zu überhitzende Dampf die außenliegenden Rohre la des Rohrbündels stärker beaufschlagt als die im Kern des Rohrbündels liegenden Rohre 1b, ist die Kondensationswirkung des wärmeabgebenden, durch den Stutzen 4 zugeführten Dampfes in den innenliegenden Rohren 1b des Rohrbündelkernes geringer als in den außenliegenden Rohren la. Unter bestimmten Arbeitsbedingungen kann deshalb aus dem unteren Ende der innenliegenden Rohre 1b neben Kondensat Restdampf austreten.Since the steam to be overheated impacts the outer tubes la of the tube bundle more than the tubes 1b lying in the core of the tube bundle, the condensation effect of the heat-emitting steam supplied through the nozzle 4 in the inner tubes 1b of the tube bundle core is less than in the outer tubes la. Under certain working conditions, residual steam can therefore escape from the lower end of the inner tubes 1b in addition to condensate.

Um zu verhindern, daß dieser aus den Rohren ib austretende Restdampf in die außenliegenden Rohre la zurückströmt, sind beim Ausführungsbeispiel diese rückströmungsgefährdeten, im Randbereich des Rohrbündels liegenden Rohre la durch die Rohrscheibe 3a der Sammelkammer 3 hindurchgeführt. Sie ragen mit ihrem Ende in eine Kondensat-Sammelwanne 8 hinein, die beim Ausführungsbeispiel somit ringförmig ausgeführt ist. In dieser Kondensat-Sammelwanne 8 wird ständig ein solcher Flüssigkeitsstand gehalten, daß durch das vorhandene Kondensat die einzelnen Enden der Rohre la abgeschlossen sind. Aus den Enden der innenliegenden Rohre 1b austretender Restdampf kann somit nicht in die untenliegenden Enden der außenliegenden Rohre la eintreten. Der Flüssigkeitsstand wird dadurch gehalten, daß ein Kondensatüberlauf 9 oberhalb der Enden der Rohre la angeordnet ist. Beim Ausführungsbeispiel ist der Rand des Kondensatüberlaufs 9 gezackt ausgebildet. Mit Hilfe dieses Kondensatüberlaufes 9 gelangt somit das aus den außenliegenden Rohren la austretende, die Kondensat-Sammelwanne 8 über den Kondensatüberlauf 9 verlassende Kondensat gemeinsam mit den aus den innenliegenden Rohren 1b austretenden Kondensat in die Sammelkammer 3 des Wärmetauschers, aus der es mittels des Abflusses 5 abgezogen wird.In order to prevent this residual steam escaping from the tubes 1b from flowing back into the outer tubes 1a, in the exemplary embodiment these tubes 1a which are at risk of backflow and which are in the edge region of the tube bundle are passed through the tube disk 3a of the collecting chamber 3. They protrude with their end into a condensate collecting trough 8, which is thus designed in a ring shape in the exemplary embodiment. In this condensate collecting trough 8 such a liquid level is constantly maintained that the individual ends of the pipes 1 a are closed by the condensate present. Residual steam emerging from the ends of the inner tubes 1b cannot therefore enter the lower ends of the outer tubes 1a. The liquid level is maintained in that a condensate overflow 9 is arranged above the ends of the tubes 1a. In the embodiment, the edge of the condensate overflow 9 is jagged. With the help of this condensate overflow 9, the condensate emerging from the outer pipes la and leaving the condensate collecting trough 8 via the condensate overflow 9, together with the condensate emerging from the inner pipes 1b, enters the collecting chamber 3 of the heat exchanger, from which it flows by means of the drain 5 is subtracted.

Bezugsziffernliste:

  • 1 Rohr
  • la außenliegendes Rohr
  • lb innenliegendes Rohr
  • 2 Verteilkammer
  • 3 Sammelkammer
  • 3a Rohrscheibe
  • 4 Stutzen
  • 5 Abfluß
  • 6 Gehäusemantel
  • 7 Dampfstutzen
  • 8 Kondensat-Sammelwanne
  • 9 Kondensatüberlauf
List of reference numbers:
  • 1 pipe
  • la external pipe
  • lb inner tube
  • 2 distribution chamber
  • 3 collecting chamber
  • 3a pipe disc
  • 4 sockets
  • 5 drain
  • 6 housing jacket
  • 7 steam spigots
  • 8 condensate collecting tray
  • 9 condensate overflow

Claims (3)

1. Wärmetauscher, insbesondere dampfbeheizter Zwischenüberhitzer, mit einem zwischen einer Verteil- und einer Sammelkammer angeordneten Rohrbündel für das wärmeabgebende, Inertgase enthaltende Medium, das in den Rohren kondensiert und hierdurch das die Rohre von außen beaufschlagende Medium erwärmt,
dadurch gekennzeichnet,
daß zumindest die rückströmungsgefährdeten, im Randbereich liegenden Rohre (la) des Rohrbündels (1) durch die Rohrscheibe (3a) der Sammelkammer (3) hindurchgeführt sind und mit ihrem Ende in eine Kondensat-Sammelwanne (8) hineinragen, die mit einem oberhalb der Rohrenden liegenden Kondensatüberlauf (9) versehen ist.1. heat exchanger, in particular steam-heated reheater, with a tube bundle arranged between a distribution and a collecting chamber for the heat-emitting medium containing inert gases, which condenses in the tubes and thereby heats the medium acting on the tubes from the outside,
characterized,
that at least the backflow-endangered pipes (la) of the tube bundle (1) are passed through the pipe disc (3a) of the collecting chamber (3) and protrude with their end into a condensate collecting trough (8) with one above the pipe ends lying condensate overflow (9) is provided. 2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß die Kondensat-Sammelwanne (8) ringförmig ausgebildet ist und ihr Kondensatüberlauf (9) im Bereich der Kernrohre (lb) des Rohrbündels (1) angeordnet ist.2. Heat exchanger according to claim 1, characterized in that the condensate collecting trough (8) is annular and its condensate overflow (9) in the region of the core tubes (lb) of the tube bundle (1) is arranged. 3. Wärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Rand des Kondensatüberlaufs (9) gezackt ausgebildet ist.3. Heat exchanger according to claim 1 or 2, characterized in that the edge of the condensate overflow (9) is jagged.
EP86114195A 1985-12-17 1986-10-14 Heat exchanger, particularly a steam-heated reheater Expired EP0232465B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86114195T ATE39181T1 (en) 1985-12-17 1986-10-14 HEAT EXCHANGER, PARTICULARLY STEAM HEATED INTERHEATER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3544517 1985-12-17
DE3544517A DE3544517C1 (en) 1985-12-17 1985-12-17 Heat exchanger

Publications (2)

Publication Number Publication Date
EP0232465A1 true EP0232465A1 (en) 1987-08-19
EP0232465B1 EP0232465B1 (en) 1988-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114195A Expired EP0232465B1 (en) 1985-12-17 1986-10-14 Heat exchanger, particularly a steam-heated reheater

Country Status (7)

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EP (1) EP0232465B1 (en)
CN (1) CN86108080B (en)
AT (1) ATE39181T1 (en)
BR (1) BR8606219A (en)
DE (2) DE3544517C1 (en)
ES (1) ES2005815B3 (en)
IN (1) IN164298B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502006004797D1 (en) 2006-07-06 2009-10-22 Balcke Duerr Gmbh Heat exchanger and a method for its production

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2238817A1 (en) * 1972-08-07 1974-03-07 Cass International Gmbh Superheater for wet steam - construction permits easy exchange of dama-ged external tubes and obviates necessity of tube bundle removal
FR2274121A1 (en) * 1974-06-06 1976-01-02 Sulzer Ag PARTLY EXPANDED STEAM REHEATING PROCESS AND NUCLEAR POWER PLANT FOR IMPLEMENTING THE PROCESS
FR2373671A1 (en) * 1976-12-08 1978-07-07 Stein Industrie STEAM SEPARATOR-SUPERHEATER WITH DRY SATURATED STEAM OUTLET
US4166497A (en) * 1976-01-21 1979-09-04 Westinghouse Electric Corp. Apparatus for increasing effective scavenging vent steam within a heat exchanger which condenses vapor inside long tubes
DE2927977A1 (en) * 1979-06-20 1981-01-22 Bbc Brown Boveri & Cie HEAT EXCHANGER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119883B (en) * 1955-08-12 1961-12-21 Helmut Baelz Ges Fuer Patentve Standing steam-heated heat exchanger with helically tightly wound heating pipes
DE3131508A1 (en) * 1981-08-08 1983-02-17 Vereinigte Deutsche Metallwerke Ag, 6000 Frankfurt Method for splitting a flowing gas/liquid mixture into a plurality of component flows

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2238817A1 (en) * 1972-08-07 1974-03-07 Cass International Gmbh Superheater for wet steam - construction permits easy exchange of dama-ged external tubes and obviates necessity of tube bundle removal
FR2274121A1 (en) * 1974-06-06 1976-01-02 Sulzer Ag PARTLY EXPANDED STEAM REHEATING PROCESS AND NUCLEAR POWER PLANT FOR IMPLEMENTING THE PROCESS
US4166497A (en) * 1976-01-21 1979-09-04 Westinghouse Electric Corp. Apparatus for increasing effective scavenging vent steam within a heat exchanger which condenses vapor inside long tubes
FR2373671A1 (en) * 1976-12-08 1978-07-07 Stein Industrie STEAM SEPARATOR-SUPERHEATER WITH DRY SATURATED STEAM OUTLET
DE2927977A1 (en) * 1979-06-20 1981-01-22 Bbc Brown Boveri & Cie HEAT EXCHANGER

Also Published As

Publication number Publication date
DE3544517C1 (en) 1987-09-03
BR8606219A (en) 1987-09-29
CN86108080B (en) 1988-09-14
DE3661384D1 (en) 1989-01-12
IN164298B (en) 1989-02-11
CN86108080A (en) 1987-06-17
ATE39181T1 (en) 1988-12-15
ES2005815B3 (en) 1991-03-01
EP0232465B1 (en) 1988-12-07

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