EP0123940A1 - Water-cooled condenser - Google Patents

Water-cooled condenser Download PDF

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Publication number
EP0123940A1
EP0123940A1 EP84103599A EP84103599A EP0123940A1 EP 0123940 A1 EP0123940 A1 EP 0123940A1 EP 84103599 A EP84103599 A EP 84103599A EP 84103599 A EP84103599 A EP 84103599A EP 0123940 A1 EP0123940 A1 EP 0123940A1
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EP
European Patent Office
Prior art keywords
titanium
water
condenser
jacket
welded
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EP84103599A
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German (de)
French (fr)
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EP0123940B1 (en
Inventor
Werner Muri
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BBC Brown Boveri AG Switzerland
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BBC Brown Boveri AG Switzerland
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/086—Heat exchange elements made from metals or metal alloys from titanium or titanium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/20—Fastening; Joining with threaded elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49373—Tube joint and tube plate structure

Definitions

  • the invention relates to a water-cooled condenser, in which the condenser tubes made of titanium are rolled and / or welded at their ends in a tube sheet and in which the tube sheets are either welded to the condenser jacket or the water chamber jacket with a fillet weld or are screwed together by means of flanges.
  • the cladding For the welded construction, when using titanium tubes, the cladding must also consist of titanium for the reasons mentioned. However, due to the thermal stresses that occur, there is a risk - even if only slightly - of the plating becoming detached. Since this is completely unthinkable, especially in today's nuclear plants, which place extremely high demands on the purity of the feed water, the power plant operators demand completely safe solutions. As far as corrosion and tightness are concerned, only titanium tube sheets can be considered in addition to the titanium tubes.
  • the invention defined in the characterizing part of the claim is therefore based on the object water-cooled condenser of the type mentioned to create a connection of the tube sheet with the steel sheet of the condenser jacket or the water chamber jacket.
  • the invention thus makes it possible for the first time ever to use titanium tube sheets in welded constructions and to provide the critical point with an absolutely tight welded joint in flange constructions.
  • the tube sheet 4 is made of pure titanium. It is equipped with a large number of titanium tubes 5, which can either be rolled, welded in at their ends or both.
  • the fresh cooling water is conveyed from the first water chamber 7 into the second, opposite water chamber through these tubes, which form the actual cooling surface and which penetrate the entire length of the steam chamber 6 and are supported in support plates (not shown).
  • the steam to be condensed flows around the tubes in cross flow.
  • the inside of the capacitor jacket 1 is now provided with explosive-plated titanium 8 at the point at which the connection to the tube sheet 4 takes place. Because of the strength of the cladding, its axial extension (in relation to the tube axes) is larger than it would be according to the tube sheet thickness.
  • Explosive plating or explosive welding is a process that can be used to produce metal combinations that are not possible by fusion welding.
  • the titanium sheet is placed over the capacitor jacket to be coated at a small distance.
  • the explosives distributed on the titanium sheet are detonated on one side, followed by the detonation zone runs over the titanium at high speed and accelerates it onto the capacitor jacket. This creates very high pressures in the collision zone, which lead to flowing metal boundary layers and thus to large-area welding.
  • the tube sheet 4 is over its entire circumference by means of fillet welds 9, respectively. 10 welded to the cladding 8 and thus to the capacitor shell.
  • the new solution is more advantageous in that the feared rust efflorescence cannot occur even with leaky pipe connections.
  • the conventional downtime preservation is superfluous.
  • the rubber coating is much simpler than before, since the pipe base / shell connection point cannot be bridged.
  • the protective cover 3 is only pulled just over the slanted end of the cladding.
  • both the capacitor jacket 1 and the water chamber wall 2 are each with a welded flange l 'and. 2 'provided, between which the titanium tube sheet is screwed tightly by means of the screw connection 12 only indicated.
  • the protective cover 3 is included in the flange.
  • explosively plated titanium 8 ' is arranged here on the sealing surface of the flange 1'.
  • the cladding is completely sealed with a condenser shell with a weld 9 'after the tube sheets have been installed.
  • the flange 1 ' is provided with a recess 11 in the zone of the sealing weld.
  • the steam chamber is thus secured both against air ingress and against cooling water, which could seep in through a possibly leaking protective cover 3 and the screw holes.
  • Concerns that explosive plating could come off are irrelevant in this version, because the plating is only subjected to pressure due to the screw connection.

Abstract

A condenser comprising a condenser shell, a plurality of titanium tubes and a titanium tube plate, wherein the condenser shell at the junction with the tube plate is explosion plated with titanium and a water-tight weld is provided between the titanium plating and the tube plate.

Description

Die Erfindung bezieht sich auf einen wassergekühlten Kondensator, bei welchem die Kondensatorrohre aus Titan an ihren Enden in jeweils einen Rohrboden eingewalzt und/oder eingeschweisst sind und bei welchem die Rohrböden mit dem Kondensatormantel oder dem Wasserkammermantel entweder mit einer Kehlnaht verschweisst oder mittels Flanschen verschraubt sind.The invention relates to a water-cooled condenser, in which the condenser tubes made of titanium are rolled and / or welded at their ends in a tube sheet and in which the tube sheets are either welded to the condenser jacket or the water chamber jacket with a fillet weld or are screwed together by means of flanges.

Derartige Kondensatoren, die am sogenannten kalten Ende von Kraftmaschinen angeordnet sind und zum Zwecke haben, durch Erzeugung eines grösstmöglichen Vakuums beispielsweise einer Dampfturbine ein grösseres Druck- und Wärmegefälle zu geben, sind bekannt. Handelt sich dabei um solche Kondensatoren, bei denen die Wasserkammer über Flansche mit dem Rohrboden und der Kondensatorschale verbunden sind, so herrschen folgende Probleme vor:

  • - Die Bearbeitung der ausserordentlich grossen Flansche für die heutigen Grosskondensatoren gestaltet sich auf der Baustelle sehr aufwendig;
  • - es besteht grundsätzlich die Gefahr, dass durch die grossen Fla..sche Luft in den Dampfraum des Kondensators eindringen kann;
  • - undichte Flansche können nachträglich nur sehr behelfsmässig und schwierig abgedichtet werden.
Such condensers, which are arranged at the so-called cold end of engines and have the purpose of giving a larger pressure and heat gradient by generating the greatest possible vacuum, for example to a steam turbine, are known. If these are condensers in which the water chamber is connected to the tube sheet and the condenser shell by flanges, the following problems are present:
  • - The processing of the extraordinarily large flanges for today's large capacitors is very complex on the construction site;
  • - there is always a risk that air can enter the vapor space of the condenser through the large bottle.
  • - Leaking flanges can only be sealed very temporarily and with difficulty.

Handelt es sich hingegen um eine reine Schweisskonstruktion, so sind die Stahlblechwände der Wasserkammern mit dem Kondensatormantel verschweisst und die Rohrböden aus Stahlblech sind in der Regel in die Wasserkammern eingeschweisst. Dies führt zu folgenden Problemen:

  • - Der Rohrboden muss mit einer rostfreien Plattierung auf der Wasserseite versehen sein;
  • - der erforderlich Schutzüberzug der Wasserkammer wird über einen Teil des plattierten Rohrbodens gezogen und wird insbesondere im Bereich der Verbindung Rohrboden/Mantel sehr anfällig;
  • - sind die Rohre eingeschweisst, so besteht während des Betriebes aufgrund der axialen Rohrkräfte die Gefahr, dass in der gelochten Zone des Rohrbodens die Plattierung sich ablöst;
  • - sind die Rohre hingegen nur eingewalzt, so kann aufgrund von Leckagen Kühlwasser durch die Plattierung hindurch zum nicht seewasserfesten Rohrboden gelangen und dort zu Rostausblühungen führen.
If, on the other hand, it is a pure welded construction, the sheet steel walls of the water chambers are welded to the condenser jacket and the tube sheets made of sheet steel are usually welded into the water chambers. This leads to the following problems:
  • - The tube sheet must be provided with a stainless plating on the water side;
  • - The required protective coating of the water chamber is drawn over part of the clad tube sheet and is particularly vulnerable in the area of the tube sheet / jacket connection;
  • - If the pipes are welded in, there is a risk of the plating becoming detached in the perforated zone of the tube sheet during operation due to the axial pipe forces;
  • - If, on the other hand, the pipes are only rolled in, cooling water can leak through the cladding to the pipe bottom, which is not seawater-resistant, and cause rust efflorescence there.

Heute werden von Kraftwerksbetreibern extreme Dichtheiten gegen Kühlwassereinbruch in Kondensatoren verlangt. Die zulässigen Leckraten sind kaum messbar, was dazu führt, dass die bisher angewandte Technik des Einwalzens der Rohre ergänzt wird durch Einschweissen der Rohre. Darüber hinaus gelangen heute extrem korrosionsbeständige Titanrohre zur Anwendung.Today, power plant operators are required to have extreme tightness against the ingress of cooling water in condensers. The permissible leakage rates are hardly measurable, which means that the previously used technique of rolling in the Pipes are supplemented by welding the pipes. In addition, extremely corrosion-resistant titanium tubes are used today.

Bei der genannten Flanschverbindung besteht nun die Möglichkeit, die Titanrohre auch in Titan-Rohrböden einzuwalzen und/oder einzuschweisse. Dies ist insbesondere deshalb naheliegend, weil sich Titan praktisch nur mit Titan verschweissen lässt. Zur Verschraubung des Titanrohrbodens mit den Flanschen sowohl des Wasserkammermantels als auch des Kondensatormantels müssen entsprechende Dichtungen vorgesehen werden. Zwischen Wasserkammermantel und Rohrboden hat man deshalb die ohnehin benötigte Gummischicht des Schutzüberzuges angeordnet, während zwischen Rohrboden und Flansch des Kondensatormantels eine Weichdichtung eingelegt wurde. Nach längerer Betriebszeit kann eine derartige Lösung indessen sowohl zu einem Kühlwasser- als auch zu einem Lufteinbruch in den Dampfraum führen, da die Dichtungen wegen der unterschiedlichen Dehnungen zwischen Rohren und Kondensatorschale sehr hoch beansprucht sind.With the flange connection mentioned, it is now possible to also roll and / or weld the titanium tubes into titanium tube sheets. This is particularly obvious because titanium can practically only be welded with titanium. Appropriate seals must be provided to screw the titanium tube base to the flanges of both the water chamber jacket and the condenser jacket. The rubber layer of the protective coating, which is required anyway, has therefore been arranged between the water chamber jacket and the tube sheet, while a soft seal has been inserted between the tube sheet and the flange of the capacitor jacket. After a long period of operation, however, such a solution can lead to both cooling water and air ingress into the vapor space, since the seals are subject to very high stresses due to the different expansions between the pipes and the condenser shell.

Bei der Schweisskonstruktion muss bei Anwendung von Titanrohren die Plattierung aus den genannten Gründen ebenfalls aus Titan bestehen. Durch die auftretenden Wärmespannungen besteht indessen - wenn auch nur geringfügig - die Gefahr einer Ablösung der Plattierung. Da dies insbesondere bei den heutigen nuklearen Anlagen, die extrem hohe Anforderungen an die Reinheit des Speisewassers stellen, völlig undenkbar ist, verlangen die Kraftwerksbetreiber völlig sichere Lösungen. Was die Korrosion und die Dichtheit betrifft, können somit neben den Titanrohren auch nur Titan-Rohrböden berücksichtigt werden.For the welded construction, when using titanium tubes, the cladding must also consist of titanium for the reasons mentioned. However, due to the thermal stresses that occur, there is a risk - even if only slightly - of the plating becoming detached. Since this is completely unthinkable, especially in today's nuclear plants, which place extremely high demands on the purity of the feed water, the power plant operators demand completely safe solutions. As far as corrosion and tightness are concerned, only titanium tube sheets can be considered in addition to the titanium tubes.

Der im kennzeichnenden Teil des Patentanspruchs definierten Erfindung liegt deshalb die Aufgabe zugrunde, bei einem wassergekühlten Kondensator der eingangs genannten Art eine Verbindung des Rohrbodens mit dem Stahlblech des Kondensatormantels oder des Wasserkammermantels zu schaffen.The invention defined in the characterizing part of the claim is therefore based on the object water-cooled condenser of the type mentioned to create a connection of the tube sheet with the steel sheet of the condenser jacket or the water chamber jacket.

Mit der Erfindung ist somit möglich, bei Schweisskonstruktionen erstmals überhaupt Rohrböden aus Titan anwenden zu können und bei Flanschkonstruktionen die kritische Stelle mit einer absolut dichten Schweissverbindung zu versehen.The invention thus makes it possible for the first time ever to use titanium tube sheets in welded constructions and to provide the critical point with an absolutely tight welded joint in flange constructions.

In der Zeichnung sind zwei Ausführungsbeispiele der Erfindung schematisch dargestellt.Two exemplary embodiments of the invention are shown schematically in the drawing.

Es zeigt:

  • Fig. 1 einen Teillängsschnitt eines in den Kondensatormantel eingeschweissten Rohrbodens;
  • Fig. 2 einen Teillängsschnitt einer Flanschverbindung von Wasserkammer, Rohrboden und Kondensatorschale.
It shows:
  • 1 shows a partial longitudinal section of a tube sheet welded into the condenser jacket;
  • Fig. 2 shows a partial longitudinal section of a flange connection of water chamber, tube sheet and condenser shell.

In den Figuren sind die gleichen Elemente jeweils mit den gleichen Bezugszeichen versehen. Erfindungsunwesentliche Elemente wie beispielsweise die Ausgestaltung der Wasserkammer und jene der Rohreintritte sind nicht dargestellt, obschon die korrosive Wirkung des Kühlwassers eine Randbedingung hinsichtlich deren Konstruktion ist. Auch die eigentliche Rohrbefestigung sowie die bündelformige Konfiguration der Rohre im Dampfraum sind nicht dargestellt, da sich nichts zum besseren Verständnis der Erfindung beitragen. Ferner sei festgehalten, dass die eigentliche Geometrie des Kondensators, seine Grösse und seine Aufstellungsart im vorliegenden Zusammenhang nicht von Bedeutung sind und dass auch die Form der Rohrböden, ob rund oder mehreckig, die Wirkungsweise der Erfindung nicht beeinflusst. All dies führt dazu, dass die Erläuterung der Erfindung anhand einer einfachen Prinzipskizze einer Wasserkammer erfolgen kann.In the figures, the same elements are provided with the same reference symbols. Elements not essential to the invention, such as the design of the water chamber and that of the pipe entries, are not shown, although the corrosive effect of the cooling water is a boundary condition with regard to their construction. The actual pipe fastening and the bundle-shaped configuration of the pipes in the steam room are also not shown, since nothing contributes to a better understanding of the invention. It should also be noted that the actual geometry of the condenser, its size and its type of installation are not important in the present context and that the shape of the tube sheets, whether round or polygonal, does not influence the mode of operation of the invention. All of this leads to the explanation the invention can be done using a simple schematic diagram of a water chamber.

Mit 1 ist der Kondensatormantel aus einfachem C-Stahl bezeichnet, der in Fig. 1 mit der wasserkammerwand 2, ebenfalls aus einfachem Stahlblech, zusammengeschweisst ist. Insbesondere wenn Meerwasser als Kühlmittel verwendet wird, ist auf der Wasserseite die Wand 2 vollständig und der Mantel 1 teilweise mit einem Schutzüberzug 3 versehen, welcher in der Regel eine Gummischicht ist, jedoch auch ein glasfaserverstärkter Epoxydharzanstrich sein kann. Der Rohrboden 4 besteht aus reinem Titan. Er ist mit einer Vielzahl von Titanrohren 5 bestückt, die entweder mit ihren Enden eingewalzt, eingeschweisst oder beides sein können. Durch diese Rohre, welche die eigentliche Kühlfläche bilden und die den Dampfraum 6 in ihrer ganzen Länge durchdringen und dabei in nicht gezeigten Stützplatten abgestützt sind, wird das frische Kühlwasser von der ersten Wasserkammer 7 in die zweite, gegenüberliegende Wasserkammer gefördert. Im Dampfraum 6. sind die Rohre vom zu kondensierenden Dampf im Querstrom umströmt.1 with the capacitor jacket made of simple carbon steel, which is welded together in FIG. 1 with the water chamber wall 2, also made of simple steel sheet. Especially when sea water is used as a coolant, the wall 2 is completely on the water side and the jacket 1 is partially provided with a protective coating 3, which is usually a rubber layer, but can also be a glass fiber reinforced epoxy resin paint. The tube sheet 4 is made of pure titanium. It is equipped with a large number of titanium tubes 5, which can either be rolled, welded in at their ends or both. The fresh cooling water is conveyed from the first water chamber 7 into the second, opposite water chamber through these tubes, which form the actual cooling surface and which penetrate the entire length of the steam chamber 6 and are supported in support plates (not shown). In the steam chamber 6, the steam to be condensed flows around the tubes in cross flow.

Gemäss der Erfindung ist nun die Innenseite des Kondensatormantels 1 an jener Stelle, an der die Verbindung mit dem Rohrboden 4 stattfindet, mit sprengplattiertem Titan 8 versehen. Der Festigkeit der Plattierung wegen ist diese in ihrer axialen Erstreckung (bezogen auf die Rohrachsen) grösser bemessen als es der Rohrbodendicke entsprechend würde.According to the invention, the inside of the capacitor jacket 1 is now provided with explosive-plated titanium 8 at the point at which the connection to the tube sheet 4 takes place. Because of the strength of the cladding, its axial extension (in relation to the tube axes) is larger than it would be according to the tube sheet thickness.

Es handelt sich beim Sprengplattieren oder auch Sprengschweissen um ein Verfahren, mit dem Metallkombinationen hergestellt werden können, die durch Schmelzschweissen nicht möglich sind. Ueber den zu beschichtenden Kondensatormantel wird mit geringem Abstand das Titanblech gelegt. Der auf dem Titanblech verteilte Sprengstoff wird auf einer Seite gezündet, worauf die Detonationszone mit grosser Geschwindigkeit über das Titan hinwegläuft und dieses auf den Kondensatormantel beschleunigt. Dabei entstehen sehr hohe Drücke in der Kollisionszone, die zu fliessenden Metallgrenzschichten und somit zu einer grossflächigen Schweissung führen.Explosive plating or explosive welding is a process that can be used to produce metal combinations that are not possible by fusion welding. The titanium sheet is placed over the capacitor jacket to be coated at a small distance. The explosives distributed on the titanium sheet are detonated on one side, followed by the detonation zone runs over the titanium at high speed and accelerates it onto the capacitor jacket. This creates very high pressures in the collision zone, which lead to flowing metal boundary layers and thus to large-area welding.

Dampfseitig und wasserseitig ist der Rohrboden 4 über seinen ganzen Umfang mittels Kehlnähten 9 resp. 10 mit der Plattierung 8 und somit mit der Kondensatorschale verschweisst. Gegenüber der bekannten Schweisskanstruktion ist die neue Lösung insofern vorteilhafter, als es selbst bei undichten Rohrverbindungen nicht zu den gefürchteten Rostausblühungen kommen kann. Ferner ist die bisher übliche Stillstandskonservierung überflüssig. Darüber hinaus gestaltet sich die Gummierung wesentlich einfacher als bisher, da die Verbindungsstelle Rohrboden/ Schale nicht zu überbrücken ist. Der Schutzüberzug 3 wird lediglich knapp über das abgeschrägte Ende der Plattierung gezogen.On the steam and water sides, the tube sheet 4 is over its entire circumference by means of fillet welds 9, respectively. 10 welded to the cladding 8 and thus to the capacitor shell. Compared to the known welding construction, the new solution is more advantageous in that the feared rust efflorescence cannot occur even with leaky pipe connections. Furthermore, the conventional downtime preservation is superfluous. In addition, the rubber coating is much simpler than before, since the pipe base / shell connection point cannot be bridged. The protective cover 3 is only pulled just over the slanted end of the cladding.

Bei der Kondensatorausbildung nach Fig. 2 sind sowohl der Kondensatormantel 1 als auch die Wasserkammerwand 2 jeweils mit einem aufgeschweissten Flansch l' resp. 2' versehen, zwischen denen der Titan-Rohrboden mittels nur angedeuteter Verschraubung 12 fest verschraubt wird. Auf der Wasserseite wird der Schutzüberzug 3 mit in den Flansch einbezogen. Gemäss der Erfindung ist hier an der Dichtfläche des flansches 1' sprengplattiertes Titan 8' angeordnet. Die Plattierung wird nach der Montage der Rohrböden mit der Kondensatorschale mit einer Schweissnaht 9' vollständig abgedichtet. Der bessern Schweissbarkeit wegen ist der Flansch 1' in der Zone der Dichtschweissung mit einer Aussparung 11 versehen. Der Dampfraum ist damit sowohl gegen Lufteinbrüche als auch gegen Kühlwasser, welches über einen gegebenenfalls undichten Schutzüberzug 3 und die Schraubenlöcher einsickern könnte, gesichert. Bedenken, dass die Sprengplattierung sich ablösen könnte, sind bei dieser Ausführung gegenstandslos, da infolge der Verschraubung die Plattierung ausschliesslich auf Druck beansprucht ist.2, both the capacitor jacket 1 and the water chamber wall 2 are each with a welded flange l 'and. 2 'provided, between which the titanium tube sheet is screwed tightly by means of the screw connection 12 only indicated. On the water side, the protective cover 3 is included in the flange. According to the invention, explosively plated titanium 8 'is arranged here on the sealing surface of the flange 1'. The cladding is completely sealed with a condenser shell with a weld 9 'after the tube sheets have been installed. For better weldability, the flange 1 'is provided with a recess 11 in the zone of the sealing weld. The steam chamber is thus secured both against air ingress and against cooling water, which could seep in through a possibly leaking protective cover 3 and the screw holes. Concerns that explosive plating could come off are irrelevant in this version, because the plating is only subjected to pressure due to the screw connection.

Claims (1)

Wassergekühlter Kondensator, bei welchem die Kondensatorrohre aus Titan an ihren Enden in jeweils einen Rohrboden eingewalzt und/oder eingeschweisst sind und bei welchem die Rohrböden mit dem Kondensatormantel oder dem Wasserkammermantel entweder mit einer Kehlnaht verschweisst oder mittels Flanschen verschraubt sind, dadurch gekennzeichnet, dass die Rohrböden (4) wie bekannt aus Titan bestehen und dass der Kondensatormantel (1, 1') oder Wasserkammermantel (2, 2') aus Stahlblech an den Verbindungsstellen mit den Rohrböden (4) mit einer Titan-Sprengplattierung (8, 8') versehen ist, welche dampfraumseitig mit den Rohrböden (4) wasserdicht verschweisst (9, 9') ist.Water-cooled condenser, in which the titanium condenser tubes are rolled and / or welded at their ends in a tube sheet and in which the tube sheets are either welded to the condenser jacket or the water chamber jacket with a fillet weld or screwed by means of flanges, characterized in that the tube sheets (4) consist of titanium, as is known, and that the condenser jacket (1, 1 ') or water chamber jacket (2, 2') made of sheet steel is provided with a titanium explosive plating (8, 8 ') at the connection points with the tube sheets (4) which is welded watertight (9, 9 ') to the tube sheets (4) on the steam chamber side.
EP84103599A 1983-04-28 1984-03-31 Water-cooled condenser Expired EP0123940B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103599T ATE40591T1 (en) 1983-04-28 1984-03-31 WATER-COOLED CONDENSER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2278/83 1983-04-28
CH2278/83A CH664626A5 (en) 1983-04-28 1983-04-28 Wassergekuehlter capacitor.

Publications (2)

Publication Number Publication Date
EP0123940A1 true EP0123940A1 (en) 1984-11-07
EP0123940B1 EP0123940B1 (en) 1989-02-01

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EP84103599A Expired EP0123940B1 (en) 1983-04-28 1984-03-31 Water-cooled condenser

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US (1) US4562887A (en)
EP (1) EP0123940B1 (en)
JP (1) JPS59208388A (en)
AT (1) ATE40591T1 (en)
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CA (1) CA1222142A (en)
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DK (1) DK159741C (en)
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Cited By (5)

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Publication number Priority date Publication date Assignee Title
US4562887A (en) * 1983-04-28 1986-01-07 Bbc Brown, Boveri & Company, Limited Water-cooled condenser tube-plate attachment
EP0267349A1 (en) * 1986-11-13 1988-05-18 Hamon-Sobelco S.A. Assembly by welding of tube plates in heat exchangers comprising solid titanium tube plates
EP0267350A1 (en) * 1986-11-13 1988-05-18 Hamon-Sobelco S.A. Assembly by flanges of tube plates in heat exchangers comprising solid titanium tube plates
DE10306262B4 (en) * 2002-02-14 2009-12-03 Mitsubishi Heavy Industries, Ltd. Tube plate unit for heat exchangers and method for installing a tube plate unit
CN108317779A (en) * 2018-02-05 2018-07-24 江阴市双友空调机械有限公司 A kind of condenser backwater room end socket

Families Citing this family (5)

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ES2052142T3 (en) * 1990-12-05 1994-07-01 Asea Brown Boveri WATER COOLED CONDENSER.
JP4451520B2 (en) * 1999-11-08 2010-04-14 株式会社日本触媒 Vertical heat exchanger
EP1577632A1 (en) * 2004-03-16 2005-09-21 Urea Casale S.A. Apparatus for treating highly corrosive agents
FR2933178A1 (en) * 2008-06-26 2010-01-01 Valeo Systemes Thermiques HEAT EXCHANGER AND CARTER FOR THE EXCHANGER
CN107560245A (en) * 2017-10-19 2018-01-09 江苏兆胜空调有限公司 The underwater shell-tube type water cooling anti-corrosion condenser that a kind of superelevation is pressure-resistant

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FR2448703A3 (en) * 1979-02-12 1980-09-05 Equip Indl Verres Speciaux Heat exchange tube for boiler-evaporators - comprises tube inside outer tube closed at one end so that steam passing through inner tube returns through annular space

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562887A (en) * 1983-04-28 1986-01-07 Bbc Brown, Boveri & Company, Limited Water-cooled condenser tube-plate attachment
EP0267349A1 (en) * 1986-11-13 1988-05-18 Hamon-Sobelco S.A. Assembly by welding of tube plates in heat exchangers comprising solid titanium tube plates
EP0267350A1 (en) * 1986-11-13 1988-05-18 Hamon-Sobelco S.A. Assembly by flanges of tube plates in heat exchangers comprising solid titanium tube plates
DE10306262B4 (en) * 2002-02-14 2009-12-03 Mitsubishi Heavy Industries, Ltd. Tube plate unit for heat exchangers and method for installing a tube plate unit
CN108317779A (en) * 2018-02-05 2018-07-24 江阴市双友空调机械有限公司 A kind of condenser backwater room end socket

Also Published As

Publication number Publication date
PT78497A (en) 1984-05-01
BR8401963A (en) 1984-12-04
PT78497B (en) 1986-08-08
EP0123940B1 (en) 1989-02-01
ES8505845A1 (en) 1985-06-16
AU2688384A (en) 1984-11-01
DE3476580D1 (en) 1989-03-09
CH664626A5 (en) 1988-03-15
JPS59208388A (en) 1984-11-26
ES531942A0 (en) 1985-06-16
ATE40591T1 (en) 1989-02-15
FI79610B (en) 1989-09-29
DK159741C (en) 1991-04-22
JPH0414273B2 (en) 1992-03-12
US4562887A (en) 1986-01-07
CA1222142A (en) 1987-05-26
DK201984A (en) 1984-10-29
DK159741B (en) 1990-11-26
NO841614L (en) 1984-10-29
FI841608A0 (en) 1984-04-24
DK201984D0 (en) 1984-04-18
FI841608A (en) 1984-10-29
AU559091B2 (en) 1987-02-19

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