EP0393221A1 - Heat-exchanger - Google Patents

Heat-exchanger Download PDF

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Publication number
EP0393221A1
EP0393221A1 EP89107114A EP89107114A EP0393221A1 EP 0393221 A1 EP0393221 A1 EP 0393221A1 EP 89107114 A EP89107114 A EP 89107114A EP 89107114 A EP89107114 A EP 89107114A EP 0393221 A1 EP0393221 A1 EP 0393221A1
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EP
European Patent Office
Prior art keywords
tube
tube plate
flange
heat exchanger
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89107114A
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German (de)
French (fr)
Other versions
EP0393221B1 (en
Inventor
Herbert Krips
Miroslan Dr. Podhorsky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balcke Duerr AG
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Balcke Duerr AG
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Filing date
Publication date
Application filed by Balcke Duerr AG filed Critical Balcke Duerr AG
Priority to AT89107114T priority Critical patent/ATE84141T1/en
Priority to DE8989107114T priority patent/DE58903180D1/en
Priority to ES198989107114T priority patent/ES2037317T3/en
Priority to EP89107114A priority patent/EP0393221B1/en
Priority to SU904743598A priority patent/RU2008605C1/en
Priority to CS901971A priority patent/CS197190A2/en
Publication of EP0393221A1 publication Critical patent/EP0393221A1/en
Application granted granted Critical
Publication of EP0393221B1 publication Critical patent/EP0393221B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • F28F9/12—Arrangements for sealing elements into header boxes or end plates by dismountable joints by flange-type connections

Definitions

  • the invention relates to a heat exchanger with at least one, preferably metallic tube plate and a plurality of arranged in bores of this tube plate tubes made of plastic, preferably PTFE, which are attached to the separation of the two media involved in the heat exchange pressure-tight manner to the tube plate.
  • the plastics used for the production of the heat exchanger tubes which are preferably saturated fluoroplastics, are characterized in addition to a pronounced Creep at elevated temperatures by about ten times the thermal expansion compared to metal. This means that in a bundle of plastic pipes, the relative displacements of the tubes relative to the surrounding metallic walls reach significant values, so that constructively must be taken to compensate for the different dimensions and ensure that it is not due to the large relative movements not jamming and Displacements of the pipes can come opposite the pipe supports and housings.
  • the invention has for its object to provide an inexpensive and repairable detachable and pressure-tight attachment of plastic pipes to flat or curved tube plates, which in particular consist of metal, but can also be made of plastic.
  • each tube is provided for attachment to the tube plate at each end with a flange formed integrally from the tube end, which rests against a respective bore in the tube plate surrounding annular bearing surface and by an elastic Be is held fastening element.
  • the invention results in a simple and inexpensive producible pressure-tight attachment of plastic pipes of heat exchangers to the associated tube plates, which also allows repair or replacement of individual tubes.
  • the at the respective pipe end integrally formed with this flange can be made in a simple manner by deforming the pipe end under the action of heat.
  • the required for this flange annular support surface around the respective hole in the tube plate can be produced in a simple manner by an additional drilling of the tube plate, which can be made in one operation together with the through hole.
  • the elastic fastening element used to fix the tube end to the tube plate is a cheap, commercially available component whose installation is simple and inexpensive.
  • a sealing ring can be arranged between the tube plate and each tube.
  • the fastening element is formed by a plate-spring-like retaining ring, which abuts with its outer edge on the wall provided for generating the support surface for the flange ring and abuts with a part of its end face on the flange.
  • the flange with U-shaped cross-section in the Form a bead around 90 ° to 180 °.
  • the dimensional stability of the flange ring can be increased.
  • a part of a tube plate 1 of a heat exchanger or collector can be seen; this tube plate 1 is provided with through-holes la, in each of which a tube 2 made of art fabric, preferably polytetrafluoroethylene is used.
  • This tube 2 is provided at its end for attachment to the tube plate 1 with a flange ring 2a formed integrally from the tube end. This flange 2a extends in the embodiment of FIG. 1 at right angles to the longitudinal axis of the tube. 2
  • the bore 1a is provided with a bore 1c larger diameter, so that there is the necessary space for the flange 2a.
  • an elastic fastener is used, which reliably presses the flange 2a against the support surface 1b of the tube plate 1.
  • This elastic fastening element is formed in the embodiments by a plate-spring-like retaining ring 3.
  • this retaining ring 3 lies with its outer edge against the wall of the boring 1c designed to produce the bearing surface 1b and with a part of its end face extending from its inner edge on the flange ring 2a of the pipe 2. In this way, a constant pressure is exerted on the flange 2a of the tube 2, which reliably presses against the support surface 1b of the tube plate 1 and thereby produces a pressure-tight connection between the tube 2 and the tube plate 1.
  • a sealing ring 4 can be inserted as shown in FIG. 2 between tube 2 and tube plate 1.
  • this sealing ring 4 which may be an O-ring, for example, either by bevels (as in the left part of Fig. 2) or by step-like boring (as in the right part of Fig. 2) the necessary installation space can be created.
  • FIG. 3 shows a further possible embodiment.
  • the tube 2 made of plastic is provided at its end with a flange 2a with a U-shaped cross section, which has been formed in the manner of a crimping operation by 180 ° and by simultaneous expansion of the tube end.
  • the annular bearing surface 1 b is provided by a kind of collar 1 d, which is formed within the bore 1 c.
  • the sealing ring 4 is disposed within the U-shaped cross-section of the flange 2a between this and the bearing surface 1b formed on the tube plate 1.
  • the plate-spring-like retaining ring 3 ensures that even with changing temperatures and pressures of the respective flange 2a of the tube 2 is reliably pressed against its support surface 1b on the tube plate 1 in order to achieve the necessary pressure-tight connection.
  • the heat exchange takes place, for example, between a liquid flowing in the tubes 2 and a gas flowing around the outside of the tubes 2. Should it be necessary in such heat exchangers or collectors to replace individual tubes 2, for example, due to damage, this is readily possible that the corresponding retaining rings 3 removed, the tubes 2 removed and replaced by new tubes 2 and then corresponding retaining rings be used. Also, a short-term closure of defective pipes in burned Crutationdem heat exchanger operation is possible in a simple manner, that in the corresponding bore 1c in the tube plate 1 fitting plugs are used.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

In order to achieve a pressure-tight mounting between the tube plate (1) and the plastic tubes (2), each tube (2) is provided for the purpose of mounting on the tube plate (1) at the respective end with a flange ring (2a), which is formed in one piece from the tube end, bears against an annular support surface (1b) surrounding the respective bore (1a) in the tube plate (1), and is held by an elastic mounting element (3). A sealing ring (4) can be arranged, if desired, between the tube (2) and tube plate (1). <IMAGE>

Description

Die Erfindung betrifft einen Wärmetauscher mit mindestens einer, vorzugsweise metallischen Rohrplatte und einer Mehrzahl von in Bohrungen dieser Rohrplatte angeordneten Rohren aus Kunststoff, vorzugsweise PTFE, die zur Trennung der beiden am Wärmeaustausch beteiligten Medien druckdicht an der Rohrplatte befestigt sind.The invention relates to a heat exchanger with at least one, preferably metallic tube plate and a plurality of arranged in bores of this tube plate tubes made of plastic, preferably PTFE, which are attached to the separation of the two media involved in the heat exchange pressure-tight manner to the tube plate.

Bei der Herstellung von Wärmetauschern für korrosive Medien besteht der Wunsch, den metallischen Werkstoff insbesondere der Rohre durch geeignete Kunststoffe, vorzugsweise Polytetra­fluoräthylen zu ersetzen, da derartige Kunststoffe kostengün­stiger sind als korrosionsbestandige metallische Werkstoffe. Derartige Wärmetauscher mit aus Kunststoff hergestellten Rohren werden in der letzten Zeit häufiger für Anlagen benutzt, durch die die im Rauchgas enthaltene Wärme ausgenutzt wird. Die Kunststoffrohre ergeben hierbei auch den Vorteil, daß bei der Rauchgasabkühlung der Taupunkt des Rauchgases un­terschritten werden kann, weil die Kunststoffrohre auch für diesen Fall korrosionsbeständig sind.In the production of heat exchangers for corrosive media, there is a desire to replace the metallic material in particular of the pipes by suitable plastics, preferably polytetrafluoroethylene, since such plastics are less expensive than corrosion-resistant metallic materials. Such heat exchangers with pipes made of plastic are used more often in recent times for facilities that exploit the heat contained in the flue gas. The plastic pipes in this case also have the advantage that in the flue gas cooling the dew point of the flue gas can be below, because the plastic pipes are corrosion resistant for this case.

Die für die Herstellung der Wärmetauscherrohre verwendeten Kunststoffe, bei denen es sich vorzugsweise um gesättigte Fluorkunststoffe handelt, zeichnen sich neben einem ausgepräg­ ten Kriechverhalten bei erhöhten Temperaturen durch ungerfähr zehnfache Temperaturausdehnung im Vergleich zu Metall aus. Dies bedeutet, daß bei einem Bündel aus Kunststoffrohren die relativen Verschiebungen der Rohre gegenüber den sie umgeben­den metallischen Wänden erhebliche Werte erreichen, so daß konstruktiv für eine Kompensation der unterschiedlichen Aus­dehnungen gesorgt und sichergestellt werden muß, daß es auch aufgrund der großen Relativbewegungen nicht zu Verklemmungen und Verlagerungen der Rohre gegenüber den Rohrhalterungen und Gehäusen kommen kann.The plastics used for the production of the heat exchanger tubes, which are preferably saturated fluoroplastics, are characterized in addition to a pronounced Creep at elevated temperatures by about ten times the thermal expansion compared to metal. This means that in a bundle of plastic pipes, the relative displacements of the tubes relative to the surrounding metallic walls reach significant values, so that constructively must be taken to compensate for the different dimensions and ensure that it is not due to the large relative movements not jamming and Displacements of the pipes can come opposite the pipe supports and housings.

Ein weiteres Problem bei der Herstellung von Wärmetauschern unter Verwendung von Kunststoffrohren ist die druckdichte Be­festigung der Enden der Kunststoffrohre an der zugehörigen Rohrplatte. Insvesondere wenn diese aus einem metallischen Werkstoff hergestellt ist, muß trotz des Kriechens der Kunst­stoffrohre und trotz deren großer Längenänderung beim An- und Abfahren des Wärmetauschers für die notwendige Druckdichtig­keit der Verbindung zwischen Rohrplatte und Rohren gesorgt werden.Another problem in the manufacture of heat exchangers using plastic pipes is the pressure-tight attachment of the ends of the plastic pipes to the associated pipe plate. Insvesondere if this is made of a metallic material, despite the creep of the plastic pipes and despite their large change in length when starting and stopping the heat exchanger for the necessary pressure tightness of the connection between the tube plate and pipes must be taken care of.

Der Erfindung liegt die Aufgabe zugrunde, eine preiswerte und zu Reparaturzwecken lösbare sowie druckdichte Befestigung von Kunststoffrohren an ebenen oder gebogenen Rohrplatten zu schaffen, die insbesondere aus Metall bestehen, aber auch aus Kunststoff hergestellt sein können.The invention has for its object to provide an inexpensive and repairable detachable and pressure-tight attachment of plastic pipes to flat or curved tube plates, which in particular consist of metal, but can also be made of plastic.

Die Lösung dieser Aufgabenstellung durch die Erfin­dung ist dadurch gekennzeichnet, daß jedes Rohr zur Befesti­gung an der Rohrplatte am jeweiligen Ende mit einem einstückig aus dem Rohrende gebildeten Flanschring versehen ist, der an einer die jeweilige Bohrung in der Rohrplatte umgebenden ring­förmigen Auflagefläche anliegt und durch ein elastisches Be­ festigungselement gehalten ist.The solution of this problem by the invention is characterized in that each tube is provided for attachment to the tube plate at each end with a flange formed integrally from the tube end, which rests against a respective bore in the tube plate surrounding annular bearing surface and by an elastic Be is held fastening element.

Durch die Erfindung ergibt sich eine einfach und preiswert herstellbare druckdichte Befestigung der Kunststoffrohre von Wärmetauschern an den zugehörigen Rohrplatten, die auch eine Reparatur bzw. den Austausch einzelner Rohre ermöglicht. Der am jeweiligen Rohrende einstückig mit diesem ausgebildete Flanschring kann auf einfache Weise durch Verformen des Rohr­endes unter Wärmeeinwirkung hergestellt werden. Die für diesen Flanschring erforderliche ringförmige Auflagefläche um die je­weilige Bohrung in der Rohrplatte ist auf einfache Weise durch eine zusätzliche Aufbohrung der Rohrplatte herstellbar, die in einem Arbeitsgang zusammen mit der Durchgangsbohrung herge­stellt werden kann. Bei dem zur Festlegung des Rohrendes an der Rohrplatte verwendeten elastischen Befestigungselement handelt es sich um ein preiswertes, handelsübliches Bauele­ment, dessen Montage einfach und preiswert ist.The invention results in a simple and inexpensive producible pressure-tight attachment of plastic pipes of heat exchangers to the associated tube plates, which also allows repair or replacement of individual tubes. The at the respective pipe end integrally formed with this flange can be made in a simple manner by deforming the pipe end under the action of heat. The required for this flange annular support surface around the respective hole in the tube plate can be produced in a simple manner by an additional drilling of the tube plate, which can be made in one operation together with the through hole. The elastic fastening element used to fix the tube end to the tube plate is a cheap, commercially available component whose installation is simple and inexpensive.

Um die Dichtwirkung zu erhöhen, kann gemäß einem weiteren Merkmal der Erfindung zwischen der Rohrplatte und jedem Rohr ein Dichtungsring angeordnet sein.In order to increase the sealing effect, according to a further feature of the invention, a sealing ring can be arranged between the tube plate and each tube.

Bei einer bevorzugten Ausführungsform der Erfindung ist das Befestigungselement durch einen tellerfederartigen Haltering gebildet, der mit seinem Außenrand an der Wand der zur Erzeu­gung der Auflagefläche für den Flanschring vorgesehenen Auf­bohrung anliegt und mit einem Teil seiner Stirnfläche am Flanschring anliegt. Durch einen derartigen Haltering wird der Flanschring des Rohres stets zuverlässig gegen die ringförmige Auflagefläche der Rohrplatte gedrückt, so daß auch bei wechselnden Reparatur- und Druckzuständen eine druckdichte Ab­dichtung zwischen Rohr und Rohrplatte sichergestellt ist.In a preferred embodiment of the invention, the fastening element is formed by a plate-spring-like retaining ring, which abuts with its outer edge on the wall provided for generating the support surface for the flange ring and abuts with a part of its end face on the flange. By such a retaining ring of the flange of the tube is always reliably pressed against the annular bearing surface of the tube plate, so that even with changing repair and pressure conditions a pressure-tight seal between the tube and tube plate is ensured.

Während es im Normalfall ausreicht, den erfindungsgemäß am Rohrende gebildeten Flanschring durch eine ebene, rechtwinklig zur rohrachse liegende Ringscheibe zu bilden, kann es bei höheren Anforderungen an die Druckdichtigkeit gemäß einem wei­teren Merkmal der Erfindung vorteilhaft sein, den Flanschring mit U-förmigen Querschnitt in der Art einer Umbördelung um 90° bis 180° auszubilden. Hierdurch kann insbesondere die Formsta­bilität des Flanschringes erhöht werden. Außerdem ist es bei dieser Gestaltung möglich, den Dichtring innerhalb des U-för­migen Querschnittes des Flanschringes zwischen diesem und der an der Rohrplatte ausgebildeten Auflagefläche anzuordnen.While it is normally sufficient to form the present invention formed at the pipe end flange by a flat, lying perpendicular to the tube axis washer, it may be advantageous for higher pressure requirements according to another feature of the invention, the flange with U-shaped cross-section in the Form a bead around 90 ° to 180 °. As a result, in particular the dimensional stability of the flange ring can be increased. Moreover, it is possible in this design, to arrange the sealing ring within the U-shaped cross-section of the flange between this and the support plate formed on the tube plate.

Auf der Zeichnung sind verschiedene Ausführungsbeispiele eines erfindungsgemäßen Wärmetauschers anhand der Ausgestaltung und Verbindung des Endes eines Kunststoffrohres mit dem zugehöri­gen Teil einer Rohrplatte dargestellt, und zwar zeigen:

  • Fig. 1      einen Längsschnitt durch ein erstes Ausfüh­rungsbeispiel eines Rohrendes und einen Schnitt durch den zugehörigen Teil der Rohr­platte,
  • Fig. 2      eine der Fig. 1 entsprechende Darstellung mit zusätzlicher Anordnung eines Dichtringes und
  • Fig. 3      eine weitere, den Figuren 1 und 2 ent­sprechende Darstellung einer dritten Ausfüh­rungsform.
In the drawing, various embodiments of a heat exchanger according to the invention with reference to the design and connection of the end of a plastic tube with the associated part of a tube plate are shown, namely:
  • 1 shows a longitudinal section through a first embodiment of a pipe end and a section through the associated part of the tube plate,
  • Fig. 2 is a representation corresponding to FIG. 1 with additional arrangement of a sealing ring and
  • Fig. 3 shows a further, the figures 1 and 2 corresponding representation of a third embodiment.

In allen drei Darstellungen ist ein Teil einer Rohrplatte 1 eines im übrigen nicht dargestellten Wärmetauschers oder Samm­lers zu erkennen; diese Rohrplatte 1 ist mit durchgehenden Bohrungen la versehen, in die jeweils ein Rohr 2 aus Kunst­ stoff, vorzugsweise Polytetrafluoräthylen eingesetzt ist. Die­ses Rohr 2 ist an seinem Ende zur Befestigung an der Rohrplat­te 1 mit einem einstückig aus dem Rohrende gebildeten Flansch­ring 2a versehen. Dieser Flanschring 2a verläuft beim Ausfüh­rungsbeispiel nach Fig. 1 rechtwinklig zur Längsachse des Roh­res 2.In all three representations, a part of a tube plate 1 of a heat exchanger or collector, not shown otherwise, can be seen; this tube plate 1 is provided with through-holes la, in each of which a tube 2 made of art fabric, preferably polytetrafluoroethylene is used. This tube 2 is provided at its end for attachment to the tube plate 1 with a flange ring 2a formed integrally from the tube end. This flange 2a extends in the embodiment of FIG. 1 at right angles to the longitudinal axis of the tube. 2

Um für diesen Flanschring 2a eine Auflagefläche 1b an der Rohrplatte 1 zu schaffen, ist die Bohrung 1a mit einer Aufboh­rung 1c größeren Durchmessers versehen, so daß sich der not­wendige Raum für den Flanschring 2a ergibt. In diesen durch die Aufbohrung 1b geschaffenen Raum ist ein elastisches Be­festigungselement eingesetzt, das den Flanschring 2a zuverläs­sig gegen die Auflagefläche 1b der Rohrplatte 1 drückt. Dieses elastische Befestigungselement wird bei den Ausführungsbei­spielen durch einen tellerfederartigen Haltering 3 gebildet.In order to provide for this flange 2a a support surface 1b on the tube plate 1, the bore 1a is provided with a bore 1c larger diameter, so that there is the necessary space for the flange 2a. In this created by the bore 1b space an elastic fastener is used, which reliably presses the flange 2a against the support surface 1b of the tube plate 1. This elastic fastening element is formed in the embodiments by a plate-spring-like retaining ring 3.

Wie die Zeichnungen erkennen lassen, liegt dieser Haltering 3 mit seinem Außenrand an der Wand der zur Erzeugung der Auf­lagefläche 1b ausgeführten Aufbohrung 1c und mit einem von seinem Innenrand ausgehenden Teil seiner Stirnfläche am Flanschring 2a des Rohres 2 an. Auf diese Weise wird ein stän­diger Druck auf den Flanschring 2a des Rohres 2 ausgeübt, der diesen zuverlässig gegen die Auflagefläche 1b der Rohrplatte 1 drückt und hierdurch eine druckdichte Verbindung zwischen Rohr 2 und Rohrplatte 1 herstellt.As can be seen from the drawings, this retaining ring 3 lies with its outer edge against the wall of the boring 1c designed to produce the bearing surface 1b and with a part of its end face extending from its inner edge on the flange ring 2a of the pipe 2. In this way, a constant pressure is exerted on the flange 2a of the tube 2, which reliably presses against the support surface 1b of the tube plate 1 and thereby produces a pressure-tight connection between the tube 2 and the tube plate 1.

Um die Druckdichtigkeit dieser Verbindung zu erhöhen, kann gemäß Fig. 2 zwischen Rohr 2 und Rohrplatte 1 ein Dichtring 4 eingefügt werden. Zur Aufnahme dieses Dichtringes 4, der bei­spielsweise ein O-Ring sein kann, kann entweder durch Abschrä­gen (wie im linken Teil der Fig. 2) oder durch stufenartiges Aufbohren (wie im rechten Teil der Fig. 2) der notwendige Ein­bauraum geschaffen werden.In order to increase the pressure-tightness of this compound, a sealing ring 4 can be inserted as shown in FIG. 2 between tube 2 and tube plate 1. To accommodate this sealing ring 4, which may be an O-ring, for example, either by bevels (as in the left part of Fig. 2) or by step-like boring (as in the right part of Fig. 2) the necessary installation space can be created.

Die Fig. 3 zeigt schließlich eine weitere Ausführungsmöglich­keit. Bei dieser Ausführung ist das aus Kunststoff herge­stellte Rohr 2 an seinem Ende mit einem Flanschring 2a mit U-förmigem Querschnitt versehen, der in der Art eines Bördel­vorganges um 180° und durch gleichzeitiges Aufweiten aus dem Rohrende gebildet worden ist. Bei dieser Ausführungsform wird die ringförmige Auflagefläche 1b durch eine Art Kragen 1d ge­schaffen, der innerhalb der Aufbohrung 1c ausgebildet ist. Bei dieser Konstruktion ist der Dichtring 4 innerhalb des U-för­migen Querschnittes des Flanschringes 2a zwischen diesem und der an der Rohrplatte 1 ausgebildeten Auflagefläche 1b ange­ordnet.Finally, FIG. 3 shows a further possible embodiment. In this embodiment, the tube 2 made of plastic is provided at its end with a flange 2a with a U-shaped cross section, which has been formed in the manner of a crimping operation by 180 ° and by simultaneous expansion of the tube end. In this embodiment, the annular bearing surface 1 b is provided by a kind of collar 1 d, which is formed within the bore 1 c. In this construction, the sealing ring 4 is disposed within the U-shaped cross-section of the flange 2a between this and the bearing surface 1b formed on the tube plate 1.

Bei allen Ausführungsbeispielen sorgt der tellerfederartige Haltering 3 dafür, daß auch bei wechselnden Temperaturen und Drücken der jeweilige Flanschring 2a des Rohres 2 zuverlässig gegen seine Auflagefläche 1b an der Rohrplatte 1 gedrückt wird, um die notwendige druckdichte Verbindung zu erzielen. Bei den Ausführungsbeispielen findet der Wärmeaustausch bei­spielsweise zwischen einer in den Rohren 2 strömenden Flüssig­keit und einem Gas statt, das die Außenseite der Rohre 2 umströmt. Sollte es bei derartigen Wärmetauschern oder Samm­lern erforderlich sein, einzelne Rohre 2, beispielsweise wegen Beschädigung auszuwechseln, ist dies ohne weiteres dadurch möglich, daß die entsprechenden Halteringe 3 entfernt, die Rohre 2 herausgenommen und durch neue Rohre 2 ersetzt werden und daß anschließend entsprechende Halteringe 3 eingesetzt werden. Auch ein kurzzeitiger Verschluß defekter Rohre bei weiterlaufendem Wärmetauscherbetrieb ist auf einfache Weise dadurch möglich, daß in die entsprechende Aufbohrung 1c in der Rohrplatte 1 passende Verschlußstopfen eingesetzt werden.In all embodiments, the plate-spring-like retaining ring 3 ensures that even with changing temperatures and pressures of the respective flange 2a of the tube 2 is reliably pressed against its support surface 1b on the tube plate 1 in order to achieve the necessary pressure-tight connection. In the embodiments, the heat exchange takes place, for example, between a liquid flowing in the tubes 2 and a gas flowing around the outside of the tubes 2. Should it be necessary in such heat exchangers or collectors to replace individual tubes 2, for example, due to damage, this is readily possible that the corresponding retaining rings 3 removed, the tubes 2 removed and replaced by new tubes 2 and then corresponding retaining rings be used. Also, a short-term closure of defective pipes in weiterlaufendem heat exchanger operation is possible in a simple manner, that in the corresponding bore 1c in the tube plate 1 fitting plugs are used.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

  • 1 Rohrplatte1 tube plate
  • 1a Bohrung1a hole
  • 1b Auflagefläche1b bearing surface
  • 1c Aufbohrung1c boring
  • 1d Kragen1d collar
  • 2 Rohr2 pipe
  • 2a Flanschring2a flange ring
  • 3 Haltering3 retaining ring
  • 4 Dichtring4 sealing ring

Claims (5)

1. Wärmetauscher mit mindestens einer, vorzugsweise metalli­schen Rohrplatte (1) und einer Mehrzahl von in Bohrungen (1a) dieser Rohrplatte (1) angeordneten Rohren (2) aus Kunststoff, vorzugsweise Polytetrafluoräthylen, die zur Trennung der beiden am Wärmeaustausch beteiligten Medien druckdicht an der Rohrplatte (1) befestigt sind,
dadurch gekennzeichnet,
daß jedes Rohr (2) zur Befestigung an der Rohrplatte (1) am jeweiligen Ende mit einem einstückig aus dem Rohrende ge­bildeten Flanschring (2a) versehen ist, der an einer die jeweilige Bohrung (1a) in der Rohrplatte (1) umgebenden ringförmigen Auflagefläche (1b) anliegt und durch ein ela­stisches Befestigungselement (3) gehalten ist.1. Heat exchanger with at least one, preferably metallic tube plate (1) and a plurality of in holes (1 a) of this tube plate (1) arranged pipes (2) made of plastic, preferably polytetrafluoroethylene, the pressure-tight to separate the two participating in the heat exchange media at the Tube plate (1) are attached,
characterized,
in that each tube (2) for attachment to the tube plate (1) is provided at the respective end with a flange ring (2a) formed integrally from the tube end, which annular receiving surface (FIG. 1) surrounds the respective bore (1a) in the tube plate (1). 1b) and is held by an elastic fastening element (3). 2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß zwischen der Rohrplatte (1) und jedem Rohr (2) ein Dicht­ring (4) angeordnet ist.2. Heat exchanger according to claim 1, characterized in that between the tube plate (1) and each tube (2) a sealing ring (4) is arranged. 3. Wärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeich­net, daß das Befestigungselement durch einen tellerfederar­tigen Haltering (3) gebildet ist, der mit seinem Außenrand an der Wand der zur Erzeugung der Auflagefläche (1b) für den Flanschring (2a) vorgesehenen Aufbohrung (1c) anliegt und mit einem Teil seiner Stirnfläche am Flanschring (2a) anliegt.3. Heat exchanger according to claim 1 or 2, characterized in that the fastening element is formed by a plate-spring-like retaining ring (3) provided with its outer edge on the wall of the production of the support surface (1b) for the flange (2a) provided bore (1c ) is applied and rests with a part of its end face on the flange ring (2a). 4. Wärmetauscher nach mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Flanschring (2a) mit U-för­migem Querschnitt in der Art einer Umbördelung um 90° bis 180° ausgebildet ist.4. Heat exchanger according to at least one of claims 1 to 3, characterized in that the flange ring (2 a) is formed with a U-shaped cross-section in the manner of a bead around 90 ° to 180 °. 5. Wärmetauscher nach Anspruch 4, dadurch gekennzeichnet, daß der Dichtring (4) innerhalb des U-förmigen Querschnitts des Flanschringes (2a) zwischen diesem und der an der Rohrplat­te (1) ausgebildeten Auflagefläche (1b) angeordnet ist.5. Heat exchanger according to claim 4, characterized in that the sealing ring (4) within the U-shaped cross section of the flange ring (2 a) between this and the tube plate (1) formed bearing surface (1 b) is arranged.
EP89107114A 1989-04-20 1989-04-20 Heat-exchanger Expired - Lifetime EP0393221B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT89107114T ATE84141T1 (en) 1989-04-20 1989-04-20 HEAT EXCHANGER.
DE8989107114T DE58903180D1 (en) 1989-04-20 1989-04-20 HEAT EXCHANGER.
ES198989107114T ES2037317T3 (en) 1989-04-20 1989-04-20 COLOR CHANGER.
EP89107114A EP0393221B1 (en) 1989-04-20 1989-04-20 Heat-exchanger
SU904743598A RU2008605C1 (en) 1989-04-20 1990-04-18 Heat exchanger
CS901971A CS197190A2 (en) 1989-04-20 1990-04-20 Heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89107114A EP0393221B1 (en) 1989-04-20 1989-04-20 Heat-exchanger

Publications (2)

Publication Number Publication Date
EP0393221A1 true EP0393221A1 (en) 1990-10-24
EP0393221B1 EP0393221B1 (en) 1992-12-30

Family

ID=8201259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107114A Expired - Lifetime EP0393221B1 (en) 1989-04-20 1989-04-20 Heat-exchanger

Country Status (6)

Country Link
EP (1) EP0393221B1 (en)
AT (1) ATE84141T1 (en)
CS (1) CS197190A2 (en)
DE (1) DE58903180D1 (en)
ES (1) ES2037317T3 (en)
RU (1) RU2008605C1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269447A (en) * 1992-08-05 1994-02-09 David Bland Pierce Heat exchanger tubular insert
DE19536300C1 (en) * 1995-09-29 1997-04-03 Balcke Duerr Gmbh Heat exchanger with at least one metallic tube plate
WO2001031277A1 (en) * 1999-10-26 2001-05-03 Tetra Laval Holdings & Finance Sa An arrangement in a tube heat exchanger
FR2802119A1 (en) * 1999-12-08 2001-06-15 Inst Francais Du Petrole Coupling between heat exchange tube and pressurized chemical reactor permits has stuffing box between tube and casing and coupled by bellows, etc. to flange attached to reactor casing
WO2002044641A1 (en) * 2000-11-30 2002-06-06 Yonggao Zhao New polytetrafluoroethylene shell-and-tube heat exchanger
DE102010006370A1 (en) 2010-01-29 2011-08-04 Wallstein Ingenieur-Gesellschaft mbH, 45657 Heat exchanger has multiple tubes made of plastic, particularly polytetrafluoroethylene, which extend between openings of two tube plates and are directly connected with tube plates
DE102010006371A1 (en) 2010-01-29 2011-08-04 Wallstein Ingenieur-Gesellschaft mbH, 45657 Heat exchanger, has pipes made of plastic i.e. polytetrafluoroethylene, extending between apertures of tubesheets, connected with tubesheets, and comprises bars extending in longitudinal direction of pipes
DE102015102245A1 (en) * 2015-02-17 2016-08-18 Wallstein Ingenieur Gmbh Connection between a pipe and a tube plate of a heat exchanger and method for producing such a connection
CN108237698A (en) * 2017-12-25 2018-07-03 浙江鼎诚环保科技有限公司 A kind of fluoroplastics exchanger tubes and tubesheets connection structure and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU170354U1 (en) * 2016-05-21 2017-04-24 Сергей Леонидович Лякишев Steam generator module with liquid metal coolant

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB695390A (en) * 1950-12-05 1953-08-12 Hugh David Heron Heat exchangers and tube connections therefor
US3027142A (en) * 1956-05-28 1962-03-27 Reynolds Metals Co Heat exchanger
DE2009122A1 (en) * 1969-02-26 1970-09-10 S.A. des Usines Chausson, Asnieres, Hauts de Seine (Frankreich) Process for the tight mechanical connection of the components of a cooler
FR2181497A1 (en) * 1972-04-26 1973-12-07 Chausson Usines Sa
FR2380488A1 (en) * 1977-02-15 1978-09-08 Hamon Sobelco Sa Liq. storage tank outlet pipe seal - includes internally and externally toothed washer to retain sealing ring and grip pipe
EP0099806A2 (en) * 1982-07-16 1984-02-01 Radiadores Puma Chausson S.A. Heat exchanger with tubes locked to the tube end plate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB695390A (en) * 1950-12-05 1953-08-12 Hugh David Heron Heat exchangers and tube connections therefor
US3027142A (en) * 1956-05-28 1962-03-27 Reynolds Metals Co Heat exchanger
DE2009122A1 (en) * 1969-02-26 1970-09-10 S.A. des Usines Chausson, Asnieres, Hauts de Seine (Frankreich) Process for the tight mechanical connection of the components of a cooler
FR2181497A1 (en) * 1972-04-26 1973-12-07 Chausson Usines Sa
FR2380488A1 (en) * 1977-02-15 1978-09-08 Hamon Sobelco Sa Liq. storage tank outlet pipe seal - includes internally and externally toothed washer to retain sealing ring and grip pipe
EP0099806A2 (en) * 1982-07-16 1984-02-01 Radiadores Puma Chausson S.A. Heat exchanger with tubes locked to the tube end plate

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269447A (en) * 1992-08-05 1994-02-09 David Bland Pierce Heat exchanger tubular insert
GB2269447B (en) * 1992-08-05 1996-05-01 David Bland Pierce Tubular insert, heat exchanger fitted therewith and method of fitment
DE19536300C1 (en) * 1995-09-29 1997-04-03 Balcke Duerr Gmbh Heat exchanger with at least one metallic tube plate
US8196644B1 (en) 1999-10-26 2012-06-12 Tetra Laval Holdings & Finance Sa Arrangement in a tube heat exchanger
WO2001031277A1 (en) * 1999-10-26 2001-05-03 Tetra Laval Holdings & Finance Sa An arrangement in a tube heat exchanger
FR2802119A1 (en) * 1999-12-08 2001-06-15 Inst Francais Du Petrole Coupling between heat exchange tube and pressurized chemical reactor permits has stuffing box between tube and casing and coupled by bellows, etc. to flange attached to reactor casing
US6824747B2 (en) 1999-12-08 2004-11-30 Institut Francais Du Petrole Device for connecting a pipe that is intended for heating/or cooling a pressurized reactor and said reactor
WO2002044641A1 (en) * 2000-11-30 2002-06-06 Yonggao Zhao New polytetrafluoroethylene shell-and-tube heat exchanger
DE102010006370A1 (en) 2010-01-29 2011-08-04 Wallstein Ingenieur-Gesellschaft mbH, 45657 Heat exchanger has multiple tubes made of plastic, particularly polytetrafluoroethylene, which extend between openings of two tube plates and are directly connected with tube plates
DE102010006371A1 (en) 2010-01-29 2011-08-04 Wallstein Ingenieur-Gesellschaft mbH, 45657 Heat exchanger, has pipes made of plastic i.e. polytetrafluoroethylene, extending between apertures of tubesheets, connected with tubesheets, and comprises bars extending in longitudinal direction of pipes
DE102010006371B4 (en) 2010-01-29 2018-10-11 Wallstein Ingenieur-Gesellschaft Mbh heat exchangers
DE102010006370B4 (en) 2010-01-29 2021-08-19 Wallstein Ingenieur-Gesellschaft Mbh Heat exchanger
DE102015102245A1 (en) * 2015-02-17 2016-08-18 Wallstein Ingenieur Gmbh Connection between a pipe and a tube plate of a heat exchanger and method for producing such a connection
DE102015102245B4 (en) 2015-02-17 2022-03-31 Wallstein Ingenieur Gmbh Connection between a tube and a tube sheet of a heat exchanger and method of making such a connection
CN108237698A (en) * 2017-12-25 2018-07-03 浙江鼎诚环保科技有限公司 A kind of fluoroplastics exchanger tubes and tubesheets connection structure and method

Also Published As

Publication number Publication date
RU2008605C1 (en) 1994-02-28
ATE84141T1 (en) 1993-01-15
EP0393221B1 (en) 1992-12-30
CS197190A2 (en) 1991-08-13
DE58903180D1 (en) 1993-02-11
ES2037317T3 (en) 1993-06-16

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