EP1923652B1 - Tube bundle heat exchanger with a pipe support with integrated cleaning device - Google Patents

Tube bundle heat exchanger with a pipe support with integrated cleaning device Download PDF

Info

Publication number
EP1923652B1
EP1923652B1 EP07021545.4A EP07021545A EP1923652B1 EP 1923652 B1 EP1923652 B1 EP 1923652B1 EP 07021545 A EP07021545 A EP 07021545A EP 1923652 B1 EP1923652 B1 EP 1923652B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
bundle heat
tubes
tube
tube bundle
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.)
Not-in-force
Application number
EP07021545.4A
Other languages
German (de)
French (fr)
Other versions
EP1923652A2 (en
EP1923652A3 (en
Inventor
Ulrich Dr. Willibald
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.)
Flucorrex AG
Original Assignee
Flucorrex AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Flucorrex AG filed Critical Flucorrex AG
Publication of EP1923652A2 publication Critical patent/EP1923652A2/en
Publication of EP1923652A3 publication Critical patent/EP1923652A3/en
Application granted granted Critical
Publication of EP1923652B1 publication Critical patent/EP1923652B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0132—Auxiliary supports for elements for tubes or tube-assemblies formed by slats, tie-rods, articulated or expandable rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents

Definitions

  • the invention relates to a tube bundle heat exchanger with a pipe support with integrated cleaning device according to the preamble of claim 1.
  • Tube bundle heat exchangers with integrated cleaning devices are known in the art.
  • the cleaning device serves to prevent fouling of the heat exchanger, triggered by a deposition of entrained in the gas flow dirt particles and / or from the gas stream condensing deposits.
  • the cleaning of a shell and tube heat exchanger is particularly important in terms of the efficiency of the heat exchanger, as deposited on the pipes dirt acts as an insulator layer and hinders the heat transfer. Since such heat exchangers are often used in the area for cooling flue gases, the cleaning of the outer surfaces of the replacement tubes at regular intervals to carry out, since the hot flue gases often still contain a high amount of dirt and dust and / or have a high pollution potential in condensation of flue gas ingredients.
  • a tube bundle heat exchanger with integrated cleaning device is in the US 5,186,240 described.
  • the horizontal tubes are acted upon by rotatably arranged spray arms with spray nozzles with a suitable cleaning liquid.
  • the German utility model 1 948 739 proposes a different solution.
  • slidable lances are provided for ejecting cleaning liquid in the longitudinal direction, which can be inserted in pipe passages between the tubes of a bundle heat exchanger and moved in the longitudinal direction.
  • the lances are rotated about their longitudinal axis in order to be able to use simpler nozzle heads for the same cleaning effect.
  • the in the DE 195 15 291 C2 described device for the purification of heat exchangers consists of a device for spraying the tube outer surfaces with a pressurized cleaning liquid, wherein between the Exchanger tubes fixedly arranged cleaning lines are provided which have upwardly directed outlet openings.
  • the cleaning lines form part of spacer elements between the exchanger tubes.
  • the invention has for its object to provide a tube bundle heat exchanger with a pipe support with integrated cleaning device that can be used variably.
  • the invention is based on the idea to design a pipe support with integrated cleaning device of a bundle heat exchanger with a plurality of parallel tubes or hoses so that insertable distributor elements are provided in pipe passages of the heat exchanger, which can be flowed through by an internal cavity with cleaning medium. Furthermore, there are openings provided, which are in the flow direction with the inner cavity and serve the output of cleaning medium.
  • the pipe support with integrated cleaning device is characterized in that each extending from a distributor element supporting elements which are dimensioned so as to extend into the space between two arranged along the distributor element, adjacent tubes or hoses of the bundle heat exchanger.
  • these support elements have an extension in the longitudinal direction of the tubes or tubes, which is smaller than the inside diameter of the associated pipe alley into which the distributor element is inserted.
  • the openings may be provided in the manifold elements, support members or both.
  • the distributor elements can be designed with associated support elements so that they are each rotatable by a rotation about the longitudinal axis of the distributor elements into a position in which they can be removed from the bundle heat exchanger.
  • the distributor elements with associated supporting elements can be rotated together about the longitudinal axis of the distributor element in such a way that the structural unit consisting of distributor element and associated supporting elements can be removed from the bundle heat exchanger in the longitudinal direction of the distributor elements.
  • a simple design element fulfills various functions simultaneously.
  • the pipe support consisting of distributor element and supporting element stabilizes the tubes or hoses of the bundle heat exchanger and simultaneously acts on these with cleaning medium.
  • this unit can be brought about a simple rotation, preferably by 90 °, about the longitudinal axis of the distributor elements in a position in which they can be removed from the bundle heat exchanger. As a result, this unit can be removed from the fully assembled heat exchanger and replaced if necessary.
  • tube bundle heat exchangers can be manufactured as a modular system of variable use, whereby a greater or lesser number of pipe supports are introduced into the pipe paths of the heat exchanger bundle as required and, depending on the cleaning requirements, a suitable amount of cleaning medium can be dispensed at a suitable position.
  • the support elements are arranged only on one longitudinal side of a distributor element.
  • the resulting comb-like geometry may be suitable when distribution elements are to be used in close proximity to each other in a bundle heat exchanger and therefore the removal of individual distribution elements should be subjected to smaller spatial restrictions.
  • the arrangement of the support elements on two opposite longitudinal sides of a distributor element still has the advantage that the distributor elements can be brought with associated support elements in each case by a rotation about the longitudinal axis of the distributor element in the removal position.
  • the support elements have an extension in the cross-sectional plane of the tubes or tubes, which corresponds at least to the radius of the tubes or hoses of the bundle heat exchanger. If the manifold elements are dimensioned to fill the entire pipe lane in the cross-sectional plane of the pipes or hoses, this means that the support elements are tangent to the outer circumference of the pipes or hoses and therefore in best possible way to stabilize the pipes or hoses allow.
  • the distributor elements are preferably arranged in each parallel tube lane of the bundle heat exchanger.
  • the openings in the distributor elements are arranged so that in each case a tube or hose is acted upon by cleaning liquid from at least one opening of a distributor element. It is desirable that the cleaning medium forms a liquid film with a cleaning effect on the heat exchanger tube.
  • the openings are arranged according to a preferred embodiment so that a distributor element acts on two rows of pipes or hoses on both sides of the pipe alley with cleaning medium.
  • the support elements In order to improve the cleaning effect of the liquid film, it may be advantageous to provide the support elements with openings and thus act on a pipe or hose via the support elements with cleaning medium.
  • Such openings on the support elements can also be arranged in addition to the openings on the distributor elements:
  • a tube bundle heat exchanger with a pipe support further comprises additional cleaning nozzles on the upstream side of the tube bundle heat exchanger.
  • additional cleaning nozzles on the upstream side of the tube bundle heat exchanger.
  • a conventional tube bundle heat exchanger 10 which consists of a plurality of mutually perpendicular tubes or tubes 12.
  • the tubes 12 are arranged in a plurality of side by side and one behind the other like a bundle and extend vertically. They are flowed through on the inside of the tube by a cooling or heating medium and on the outside of the tube in the cross flow of a in Fig. 4 with "raw gas” designated to flow around or to be heated gas flow around.
  • the crossflow exposes the tubes to a flow pressure that can cause compressive forces and flow-induced vibrations. Therefore, in conventional heat exchangers spacer elements 14 and support members 16 are used, which, in the case of spacer elements, avoid swinging and concerns of the tubes to each other or, in the case of support members 16, cause an accurate fixation of the individual tubes.
  • a cleaning medium manifold extending in the longitudinal direction of the tubes 12 and having exit nozzles 20 for directing the cleaning medium to the most heavily contaminated upstream side of the adjacent tubes is sprayed on.
  • the in Fig. 1 illustrated section of a tube bundle heat exchanger according to the invention with a pipe support with integrated cleaning device consists of a distributor element 22, which, as shown, extends into a pipe passage of the tube bundle heat exchanger.
  • the distributor element 22 is arranged substantially perpendicular to the longitudinal axis of the tubes 12.
  • the distributor element 22 preferably has a circular cross-section in order to be described later with reference to FIGS Fig. 2 illustrated rotation, but at the same time a as in Fig. 1 represented concerns to allow the pipes 12 on both sides of the pipe alley.
  • Other cross-sectional shapes are However, conceivable as long as only the rotation of the distributor elements is possible, so that they can be removed.
  • the distributor element 22 is provided with a plurality of outlet openings 24, of which only a few in Fig. 1 are denoted by reference numeral.
  • two outlet openings are each associated with a tube 12 so that the tube can be acted upon with cleaning medium, preferably a cleaning liquid, preferably on the entire circumferential area facing the distributor element 22.
  • the outlet openings 24 may be configured as nozzles, from which the cleaning medium transported in the inner cavity 30 of the distributor element 22 exits under increased pressure. In the same way, it is also possible to let the cleaning medium without appreciable pressure and without the provision of a nozzle-like constriction gush out, so that the cleaning medium flows as a film along the tubes 12 along.
  • the outlet openings 24 are arranged downwards and thus allow the generation of a cleaning film which can flow down the entire, the distributor element 22 facing the peripheral region of the tube along.
  • each with two outlet openings 24, which are assigned to a single tube 12 are of course others, hereof deviating geometries possible, which are particularly tailored to the cleaning medium used and the nature and extent of the dirt to be removed.
  • Such openings on the support elements may also be arranged in addition to the openings on the distributor elements.
  • Support elements 26a, 26b extend from the distributor element 22 on both sides of the distributor element into the intermediate space between two juxtaposed tubes along one side of the distributor element 22.
  • the support elements 26 are arranged diametrically opposite one another on both sides of the distributor element 22, so that the later will be described with reference to FIGS Fig. 2 shown rotational movement before removal of the distributor elements 22 is possible.
  • Fig. 1 Also, the gap 28 between two groups of each spaced apart at a greater distance tubes 12 is shown. In the area of such a gap, as in Fig. 1 is shown, a plurality of support elements 26 'may be provided, which have only a small extension in the longitudinal direction of the distributor element 22.
  • the remaining support elements 26a and 26b are preferably dimensioned so that their extension in the longitudinal direction of the distributor element 22 corresponds to the smallest distance between two adjacent tubes 12. Furthermore, the support elements 26 are dimensioned in a direction perpendicular to the longitudinal extent of the distributor elements 22 and perpendicular to the longitudinal direction of the tubes 12 so that they extend at least to the smallest distance between two adjacent tubes 12. By this measure it is ensured that the support elements 26 abut tangentially on the outer circumference of the adjacent tubes 12 and thus fix the tubes to each other.
  • the extension of the support elements 26 perpendicular to the plane of the Fig. 1 . ie in the longitudinal direction of the tubes must be less than the width of the pipe alley, according to the embodiment Fig. 1 the outer diameter of the distributor element 22 corresponds.
  • Fig. 2 Several juxtaposed tubes 12 are shown in the longitudinal direction. Between each two adjacent tubes in each case a distributor element is shown, wherein arranged in adjacent pipe routes distributor elements can be arranged with respect to their height in one or more planes.
  • An advantageous embodiment results in staggered arrangement, since so the drainage of the cleaning medium is improved, which is placed over a possibly arranged above the described pipe support cleaning device.
  • the reference to the height is made on condition that it is a heat exchanger with vertically arranged tubes 12.
  • the distribution elements 22a and 22c are at the same height, while the distribution element 22b is offset sufficiently far in relation to the height that it can be rotated about its longitudinal axis. This is illustrated by the distribution device 22b with the support elements 26b. With solid lines is in Fig.
  • FIG. 2 show the operating position of the distributor element 22b with the support elements 26b attached thereto. This corresponds to the in Fig. 1 shown position in which the individual support members 26b are disposed between adjacent tubes and fix them relative to each other. With broken lines is in Fig. 2 position 26'b, in which the distributor element 22b has been rotated by 90 ° about its longitudinal axis, so that the support elements 26b arranged diametrically thereon are moved into the pipe path and in the position shown by 26'b by a longitudinal movement of the distributor element 22b can be removed with this from the tube bundle heat exchanger.
  • Fig. 2 is again the extension of the support members 26b shown in the longitudinal direction of the tubes 12, the lower must be as the clear width of the pipe line, so that after the rotation of the distributor element, these can be removed from the tube bundle heat exchanger.
  • FIG. 3 Finally, in extension of Fig. 1 illustrated that distributor elements 22 can be arranged in each pipe passage of the tube bundle heat exchanger, so that each individual tube 12 is exactly fixed in position. By the broken line on the distributor element 22b and the associated support element 26b it is clear that this at a different height to the adjacent distributor elements 22a and 22d as shown in FIG Fig. 2 can be arranged. As with the example of any tube 12 in Fig. 3 is clear, the individual tubes are fixed on two sides by adjacent distributor elements, whereas a movement perpendicular thereto and perpendicular to the longitudinal direction of the tubes is excluded by the support members 26 of both an adjacent distributor element as well as the other adjacent distributor element. Furthermore are out Fig.
  • each distribution element separately removed from the heat exchanger and replaced, but also be easily adjusted in terms of its height.
  • the advantage of the present invention is, a pipe support with integrated cleaning device in such a way that it is easily interchangeable, so that a tube bundle heat exchanger with pipe supports according to the invention quickly and variably to the respective Application designed or, if necessary, can be replaced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cleaning In General (AREA)

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft einen Rohrbündel-Wärmeaustauscher mit einer Rohrabstützung mit integrierter Reinigungseinrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a tube bundle heat exchanger with a pipe support with integrated cleaning device according to the preamble of claim 1.

Stand der TechnikState of the art

Röhrbündel-Wärmetauscher mit integrierten Reinigungseinrichtungen sind in der Technik bekannt. Dabei dient die Reinigungseinrichtung dazu, einem Fouling des Wärmetauschers, ausgelöst durch eine Ablagerung von in dem Gasstrom mitgeführten Schmutzpartikeln und/oder aus dem Gasstrom kondensierenden Ablagerungen, vorzubeugen. Die Reinigung eines Rohrbündel-Wärmeaustauschers ist insbesondere auch im Hinblick auf den Wirkungsgrad des Wärmetauschers wichtig, da auf den Rohren abgelagerter Schmutz wie eine Isolatorschicht wirkt und den Wärmeübergang behindert. Da derartige Wärmeaustauscher häufig im Bereich zur Kühlung von Rauchgasen eingesetzt werden, ist die Reinigung der äußeren Oberflächen der Austauschrohre in regelmäßigen Abständen durchzuführen, da die heißen Rauchgase häufig noch eine hohe Schmutz- und Staubfracht enthalten und/oder bei Kondensation von Rauchgasinhaltsstoffen ein hohes Verschmutzungspotential aufweisen.Tube bundle heat exchangers with integrated cleaning devices are known in the art. In this case, the cleaning device serves to prevent fouling of the heat exchanger, triggered by a deposition of entrained in the gas flow dirt particles and / or from the gas stream condensing deposits. The cleaning of a shell and tube heat exchanger is particularly important in terms of the efficiency of the heat exchanger, as deposited on the pipes dirt acts as an insulator layer and hinders the heat transfer. Since such heat exchangers are often used in the area for cooling flue gases, the cleaning of the outer surfaces of the replacement tubes at regular intervals to carry out, since the hot flue gases often still contain a high amount of dirt and dust and / or have a high pollution potential in condensation of flue gas ingredients.

Ein Rohrbündel-Wärmeaustauscher mit integrierter Reinigungseinrichtung ist in der US 5,186,240 beschrieben. Die horizontalen Rohre werden dabei über rotierbar angeordnete Sprüharme mit Sprühdüsen mit einer geeigneten Reinigungsflüssigkeit beaufschlagt. In ähnlicher Weise arbeitet der in der DE-GM 66 06 681 beschriebene Ladeluftkühler für Dieselmotoren, bei dem die Lamellenrohre oder Rippenrohre über zwischen diesen fest eingebaute Sprüharme mit Reinigungsflüssigkeit beaufschlagt werden.A tube bundle heat exchanger with integrated cleaning device is in the US 5,186,240 described. The horizontal tubes are acted upon by rotatably arranged spray arms with spray nozzles with a suitable cleaning liquid. Similarly, the works in the DE-GM 66 06 681 described intercooler for diesel engines, in which the finned tubes or finned tubes are acted upon by these permanently installed spray arms with cleaning liquid.

Das deutsche Gebrauchsmuster 1 948 739 schlägt eine unterschiedliche Lösung vor. Hierbei sind in Längsrichtung verschiebbare Lanzen zum Ausdüsen von Reinigungsflüssigkeit vorgesehen, die in Rohrgassen zwischen den Rohren eines Bündel-Wärmetauschers eingeführt und in Längsrichtung verschoben werden können. Zusätzlich wird angeregt, die Lanzen um ihre Längsachse zu drehen, um bei gleicher Reinigungswirkung einfachere Düsenköpfe verwenden zu können.The German utility model 1 948 739 proposes a different solution. In this case, slidable lances are provided for ejecting cleaning liquid in the longitudinal direction, which can be inserted in pipe passages between the tubes of a bundle heat exchanger and moved in the longitudinal direction. In addition, it is suggested that the lances are rotated about their longitudinal axis in order to be able to use simpler nozzle heads for the same cleaning effect.

Eine hiervon unterschiedliche Lösung ist in der deutschen Patentschrift 1 055 565 beschrieben. Hierin gibt ein Versteifungsanker zwischen den Außenwänden eines Gaskühlers Spülflüssigkeit aus, um den Kühler periodisch oder kontinuierlich zu berieseln. Bei schlanken, hohen Kühlern können derartige Versteifungsanker in verschiedenen Höhen vorgesehen werden, um eine gute Reinigungswirkung erzielen zu können.A different solution is in the German Patent 1,055,565 described. Herein, a stiffening anchor between the outer walls of a gas cooler emits flushing liquid to periodically or continuously spray the cooler. With slender, high coolers such stiffening anchors can be provided at different heights to achieve a good cleaning effect can.

Die in der DE 195 15 291 C2 beschriebene Vorrichtung zur Reinigung von Wärmeaustauschern besteht aus einer Einrichtung zum Bespritzen der Rohraußenflächen mit einer unter Druck stehenden Reinigungsflüssigkeit, wobei zwischen den Austauscherrohren fest angeordnete Reinigungsleitungen vorgesehen sind, die nach oben gerichtete Austrittsöffnungen aufweisen. Dabei können nach einer Ausführungsform die Reinigungsleitungen Bestandteil von Distanzelementen zwischen den Austauscherrohren bilden.The in the DE 195 15 291 C2 described device for the purification of heat exchangers consists of a device for spraying the tube outer surfaces with a pressurized cleaning liquid, wherein between the Exchanger tubes fixedly arranged cleaning lines are provided which have upwardly directed outlet openings. In this case, according to one embodiment, the cleaning lines form part of spacer elements between the exchanger tubes.

Bei der im französischen Patent FR 1 119 437 beschriebenen Vorrichtung zur Reinigung der Austauschrohre wird über ein Rohrsystem die Reinigungsflüssigkeit in Sprührohren über die gesamten Austauschrohre gebracht. Diese Sprührohre sind drehbar und verschiebbar gelagert und sind vorzugsweise senkrecht zu den Austauschrohren der Wärmerückgewinnungsanlage angeordnet. Die Reinigung der Austauschrohre erfolgt mittels des Übersprühens der Reinigungsflüssigkeit aus den Sprührohren über die Austauschrohre.When in the French patent FR 1 119 437 described apparatus for cleaning the replacement pipes is brought through a pipe system, the cleaning liquid in spray pipes over the entire exchange tubes. These spray tubes are mounted rotatably and displaceably and are preferably arranged perpendicular to the replacement tubes of the heat recovery system. The cleaning of the replacement tubes by means of overspray the cleaning liquid from the spray tubes on the exchange tubes.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, einen Rohrbündel-Wärmeaustauscher mit einer Rohrabstützung mit integrierter Reinigungseinrichtung vorzuschlagen, die variabel einsetzbar ist.The invention has for its object to provide a tube bundle heat exchanger with a pipe support with integrated cleaning device that can be used variably.

Die Aufgabe dieser Erfindung wird durch einen Rohrbündel-Wärmeaustauscher mit einer Rohrabstützung mit integrierter Reinigungseinrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausführungsformen folgen aus den übrigen Ansprüchen.The object of this invention is achieved by a tube bundle heat exchanger with a pipe support with integrated cleaning device with the features of claim 1. Advantageous embodiments follow from the remaining claims.

Der Erfindung liegt der Gedanke zugrunde, eine Rohrabstützung mit integrierter Reinigungseinrichtung eines Bündel-Wärmeaustauscher mit einer Vielzahl parallel angeordneter Rohre oder Schläuche so auszugestalten, dass in Rohrgassen des Wärmetauschers einführbare Verteilerelemente vorgesehen sind, die durch einen inneren Hohlraum mit Reinigungsmedium durchströmbar sind. Weiterhin sind Öffnungen vorgesehen, die mit dem inneren Hohlraum in Strömungsrichtung stehen und der Ausgabe von Reinigungsmedium dienen. Die Rohrabstützung mit integrierter Reinigungseinrichtung ist dadurch gekennzeichnet, dass sich jeweils von einem Verteilerelement ausgehend Abstützelemente erstrecken, die so dimensioniert sind, um sich in den Freiraum zwischen zwei längs des Verteilerelements angeordneten, benachbarten Rohren oder Schläuchen des Bündel-Wärmetauschers zu erstrecken. Dabei besitzen diese Abstützelemente eine Erstreckung in Längsrichtung der Rohre oder Schläuche, die geringer ist als die lichte Weite der zugehörigen Rohrgasse, in welche das Verteilerelement eingeführt ist. Die Öffnungen können in den Verteilerelementen, Abstützelementen oder beiden vorgesehen sein. Der Vorteil dieser Ausgestaltung besteht darin, dass die Verteilerelemente mit zugehörigen Abstützelementen so ausgestaltet sein können, dass sie jeweils durch eine Drehung um die Längsachse der Verteilerelemente in eine Position rotierbar sind, in der sie aus dem Bündel-Wärmetauscher entnehmbar sind. Mit anderen Worten lassen sich die Verteilerelemente mit zugehörigen Abstützelementen gemeinsam so um die Längsachse des Verteilerelements drehen, dass die aus Verteilerelement und zugehörigen Abstützelementen bestehende Baueinheit in Längsrichtung der Verteilerelemente aus dem Bündel-Wärmetauscher entnehmbar ist. Auf diese Weise werden mit einem einfach gestalteten Bauelement verschiedene Funktionen gleichzeitig erfüllt. Die Rohrabstützung bestehend aus Verteilerelement und Abstützelement stabilisiert die Rohre oder Schläuche des Bündel-Wärmetauschers und beaufschlagt gleichzeitig diese mit Reinigungsmedium. Gleichzeitig kann diese Baueinheit über eine einfache Rotation, vorzugsweise um 90°, um die Längsachse der Verteilerelemente in eine Position gebracht werden, in der diese aus dem Bündel-Wärmeaustauscher entnommen werden kann. Dadurch kann diese Baueinheit aus dem fertig zusammengebauten Wärmetauscher ausgebaut und bei Bedarf ausgetauscht werden.The invention is based on the idea to design a pipe support with integrated cleaning device of a bundle heat exchanger with a plurality of parallel tubes or hoses so that insertable distributor elements are provided in pipe passages of the heat exchanger, which can be flowed through by an internal cavity with cleaning medium. Furthermore, there are openings provided, which are in the flow direction with the inner cavity and serve the output of cleaning medium. The pipe support with integrated cleaning device is characterized in that each extending from a distributor element supporting elements which are dimensioned so as to extend into the space between two arranged along the distributor element, adjacent tubes or hoses of the bundle heat exchanger. In this case, these support elements have an extension in the longitudinal direction of the tubes or tubes, which is smaller than the inside diameter of the associated pipe alley into which the distributor element is inserted. The openings may be provided in the manifold elements, support members or both. The advantage of this embodiment is that the distributor elements can be designed with associated support elements so that they are each rotatable by a rotation about the longitudinal axis of the distributor elements into a position in which they can be removed from the bundle heat exchanger. In other words, the distributor elements with associated supporting elements can be rotated together about the longitudinal axis of the distributor element in such a way that the structural unit consisting of distributor element and associated supporting elements can be removed from the bundle heat exchanger in the longitudinal direction of the distributor elements. In this way, a simple design element fulfills various functions simultaneously. The pipe support consisting of distributor element and supporting element stabilizes the tubes or hoses of the bundle heat exchanger and simultaneously acts on these with cleaning medium. At the same time, this unit can be brought about a simple rotation, preferably by 90 °, about the longitudinal axis of the distributor elements in a position in which they can be removed from the bundle heat exchanger. As a result, this unit can be removed from the fully assembled heat exchanger and replaced if necessary.

Auf diese Weise lassen sich Rohrbündel-Wärmetauscher als ein variabel einsetzbares Baukastensystem fertigen, wobei je nach Bedarf eine größere oder geringere Anzahl von Rohrabstützungen in die Rohrgassen des Wärmetauscherbündels eingeführt sind und je nach den Reinigungserfordernissen auch eine geeignete Menge Reinigungsmedium an geeigneter Position ausgegeben werden kann.In this way, tube bundle heat exchangers can be manufactured as a modular system of variable use, whereby a greater or lesser number of pipe supports are introduced into the pipe paths of the heat exchanger bundle as required and, depending on the cleaning requirements, a suitable amount of cleaning medium can be dispensed at a suitable position.

Nach einer bevorzugten Ausführungsform der Erfindung sind die Abstützelemente nur an einer Längsseite eines Verteilerelements angeordnet. Die sich dabei ergebende kammartige Geometrie kann geeignet sein, wenn Verteilerelemente in großer räumlicher Nähe zueinander in einem Bündel-Wärmeaustauscher eingesetzt werden sollen und daher das Entnehmen einzelner Verteilerelemente geringeren räumlichen Beschränkungen unterworfen sein soll. Bevorzugt ist es allerdings, die Abstützelemente auf zwei entgegengesetzten Längsseiten eines Verteilerelements anzuordnen, so dass die oben beschriebenen Aufgaben einer Stabilisierung und Reinigung für die auf beiden Seiten einer Rohrgasse angeordneten Rohre gleichzeitig erfüllt werden können. Durch die Anordnung der Abstützelemente auf zwei entgegengesetzten Längsseiten eines Verteilerelements bleibt weiterhin der Vorteil bestehen, dass die Verteilerelemente mit zugehörigen Abstützelementen jeweils durch eine Drehung um die Längsachse des Verteilerelements in die Entnahmeposition gebracht werden können.According to a preferred embodiment of the invention, the support elements are arranged only on one longitudinal side of a distributor element. The resulting comb-like geometry may be suitable when distribution elements are to be used in close proximity to each other in a bundle heat exchanger and therefore the removal of individual distribution elements should be subjected to smaller spatial restrictions. However, it is preferred to arrange the support elements on two opposite longitudinal sides of a distributor element, so that the above-described tasks of stabilization and cleaning for the tubes arranged on both sides of a tube lane can be fulfilled simultaneously. The arrangement of the support elements on two opposite longitudinal sides of a distributor element still has the advantage that the distributor elements can be brought with associated support elements in each case by a rotation about the longitudinal axis of the distributor element in the removal position.

Vorzugsweise weisen die Abstützelemente eine Erstreckung in der Querschnittsebene der Rohre oder Schläuche auf, die zumindest dem Radius der Rohre oder Schläuche des Bündel-Wärmetauschers entspricht. Wenn die Verteilerelemente so dimensioniert sind, dass sie die gesamte Rohrgasse in der Querschnittsebene der Rohre oder Schläuche ausfüllen, bedeutet dies, dass die Abstützelemente tangential an dem Außenumfang der Rohre oder Schläuche anliegen und daher in bestmöglicher Weise eine Stabilisierung der Rohre oder Schläuche ermöglichen.Preferably, the support elements have an extension in the cross-sectional plane of the tubes or tubes, which corresponds at least to the radius of the tubes or hoses of the bundle heat exchanger. If the manifold elements are dimensioned to fill the entire pipe lane in the cross-sectional plane of the pipes or hoses, this means that the support elements are tangent to the outer circumference of the pipes or hoses and therefore in best possible way to stabilize the pipes or hoses allow.

Um eine bestmögliche Stabilisierung der Rohre oder Schläuche zu erreichen, sind die Verteilerelemente vorzugsweise in jeder parallelen Rohrgasse des Bündel-Wärmeaustauschers angeordnet.In order to achieve the best possible stabilization of the tubes or hoses, the distributor elements are preferably arranged in each parallel tube lane of the bundle heat exchanger.

Nach einer bevorzugten Ausführungsform der Erfindung sind die Öffnungen in den Verteilerelementen so angeordnet, dass jeweils ein Rohr oder Schlauch von mindestens einer Öffnung eines Verteilerelements mit Reinigungsflüssigkeit beaufschlagt wird. Dabei wird angestrebt, dass das Reinigungsmedium am Wärmetauscherrohr einen Flüssigkeitsfilm mit reinigender Wirkung bildet. Zu diesem Zweck sind die Öffnungen nach einer bevorzugten Ausführungsform so angeordnet, dass ein Verteilerelement zwei Reihen von Rohren oder Schläuchen beidseits der Rohrgasse mit Reinigungsmedium beaufschlagt.According to a preferred embodiment of the invention, the openings in the distributor elements are arranged so that in each case a tube or hose is acted upon by cleaning liquid from at least one opening of a distributor element. It is desirable that the cleaning medium forms a liquid film with a cleaning effect on the heat exchanger tube. For this purpose, the openings are arranged according to a preferred embodiment so that a distributor element acts on two rows of pipes or hoses on both sides of the pipe alley with cleaning medium.

Um die reinigende Wirkung des Flüssigkeitsfilms zu verbessern, kann es vorteilhaft sein, die Abstützelemente mit Öffnungen zu versehen und so ein Rohr oder Schlauch über die Abstützelemente mit Reinigungsmedium zu beaufschlagen. Solche Öffnungen an den Abstützelementen können auch zusätzlich zu den Öffnungen an den Verteilerelementen angeordnet sein:In order to improve the cleaning effect of the liquid film, it may be advantageous to provide the support elements with openings and thus act on a pipe or hose via the support elements with cleaning medium. Such openings on the support elements can also be arranged in addition to the openings on the distributor elements:

Nach einer bevorzugten Ausführungsform weist ein Rohrbündel-Wärmetauscher mit einer erfindungsgemäßen Rohrabstützung weiterhin zusätzliche Reinigungsdüsen auf der stromaufwärts gelegenen Seite des Rohrbündel-Wärmetauschers auf. Durch diese Maßnahme lässt sich diejenige Stelle eines Rohrbündel-Wärmeaustauschers, die der stärksten Schmutzfracht ausgesetzt ist, nämlich die dem Rohgasstrom zugewandte Seite der stromaufwärts angeordneten Rohre, zusätzlich mit Reinigungsflüssigkeit beaufschlagen, die in diesem Fall mit Druck auf die Rohre abgegeben wird. Außerdem wird durch diese Anordnung von Düsen erreicht, dass die reinigende Wirkung der am Wärmetauscherrohr abfließenden Flüssigkeitsfilm weder durch die Gasströmung selbst (nämlich durch Mitriss) noch durch Verdampfung infolge Wärmeeinwirkung beeinträchtigt wird.According to a preferred embodiment, a tube bundle heat exchanger with a pipe support according to the invention further comprises additional cleaning nozzles on the upstream side of the tube bundle heat exchanger. By this measure, that point of a tube bundle heat exchanger, which is exposed to the strongest dirt load, namely the raw gas stream facing side of the upstream tubes, additionally apply cleaning fluid, which is discharged in this case with pressure on the tubes. In addition, through this Arrangement of nozzles ensures that the cleaning effect of the effluent at the heat exchanger tube liquid film is affected neither by the gas flow itself (namely by entrainment) nor by evaporation due to heat.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

In den nachfolgenden Figuren wird die Erfindung sowie ein herkömmlicher Bündel-Wärmeaustauscher beispielhaft beschrieben. Darin zeigen:

Fig. 1
die Anordnung einer Rohrabstützung mit integrierter Reinigungseinrichtung im Bereich eines Teils eines Rohrbündels, wobei die Rohrbündel im Schnitt dargestellt sind;
Fig. 2
ein Beispiel für die Anordnung mehrerer Rohrabstützungen innerhalb eines erfindungsgemäßen Rohrbündels sowie die Rotationsbewegung zur Entnahme der Rohrabstützung;
Fig. 3
die relative Lage mehrerer parallel zueinander verlaufender Rohrabstützungen; und
Fig. 4
einen herkömmlichen Bündel-Wärmeaustauscher.
In the following figures, the invention and a conventional bundle heat exchanger will be described by way of example. Show:
Fig. 1
the arrangement of a pipe support with integrated cleaning device in the region of a part of a tube bundle, wherein the tube bundles are shown in section;
Fig. 2
an example of the arrangement of several Rohrabstützungen within a tube bundle according to the invention and the rotational movement to remove the Rohrabstützung;
Fig. 3
the relative position of several parallel pipe supports; and
Fig. 4
a conventional bundle heat exchanger.

Wege zur Ausführung der ErfindungWays to carry out the invention

In den nachfolgenden Figuren werden dieselben Bauelemente jeweils mit denselben Referenzziffern bezeichnet.In the following figures, the same components are denoted by the same reference numerals.

In Fig. 4 ist ein herkömmlicher Rohrbündel-Wärmetauscher 10 dargestellt, der aus einer Vielzahl von senkrecht zueinander angeordneten Rohren oder Schläuchen 12 besteht. Im Folgenden wird stets nur noch der Ausdruck "Rohre" verwendet werden, auch wenn es sich erfindungsgemäß in gleicher Weise um durchströmte Schläuche handeln könnte. Die Rohre 12 sind in einer Vielzahl neben- und hintereinander bündelartig angeordnet und verlaufen vertikal. Sie werden auf der Rohrinnenseite von einem Kühl- oder Heizmedium durchströmt und auf der Rohraußenseite im Kreuzstrom von einem in Fig. 4 mit "Rohgas" bezeichneten, zu kühlenden oder aufzuheizenden Gasstrom umströmt.In Fig. 4 a conventional tube bundle heat exchanger 10 is shown, which consists of a plurality of mutually perpendicular tubes or tubes 12. In the following, only the term "tubes" will always be used, even if they are the same in the invention flowed through hoses could act. The tubes 12 are arranged in a plurality of side by side and one behind the other like a bundle and extend vertically. They are flowed through on the inside of the tube by a cooling or heating medium and on the outside of the tube in the cross flow of a in Fig. 4 with "raw gas" designated to flow around or to be heated gas flow around.

Durch den Kreuzstrom werden die Rohre einem Strömungsdruck ausgesetzt, der Druckkräfte und strömungsinduzierte Schwingungen hervorrufen kann. Daher werden in herkömmlichen Wärmeaustauschern Distanzelemente 14 sowie Abstützelemente 16 eingesetzt, welche, im Falle der Distanzelemente, ein Schwingen und Anliegen der Rohre aneinander vermeiden oder aber, im Falle von Abstützelementen 16, eine genaue Fixierung der einzelnen Rohre bewirken.The crossflow exposes the tubes to a flow pressure that can cause compressive forces and flow-induced vibrations. Therefore, in conventional heat exchangers spacer elements 14 and support members 16 are used, which, in the case of spacer elements, avoid swinging and concerns of the tubes to each other or, in the case of support members 16, cause an accurate fixation of the individual tubes.

Im einfachsten Fall ist auf der stromaufwärts gelegenen Seite des Wärmeaustauschers 10 ein Verteilerrohr für ein Reinigungsmedium vorgesehen, das in Längsrichtung der Rohre 12 verläuft und Austrittsdüsen 20 besitzt, mit denen das Reinigungsmedium auf die am stärksten mit Schmutzfracht beaufschlagte, stromaufwärts gelegene Seite der daran angrenzenden Rohre aufgesprüht wird.In the simplest case, on the upstream side of the heat exchanger 10, there is provided a cleaning medium manifold extending in the longitudinal direction of the tubes 12 and having exit nozzles 20 for directing the cleaning medium to the most heavily contaminated upstream side of the adjacent tubes is sprayed on.

Der in Fig. 1 dargestellte Ausschnitt eines erfindungsgemäßen Rohrbündel-Wärmeaustauschers mit einer Rohrabstützung mit integrierter Reinigungseinrichtung besteht aus einem Verteilerelement 22, das sich, wie dargestellt, in eine Rohrgasse des Rohrbündel-Wärmetauschers erstreckt. Dabei ist das Verteilerelement 22 im Wesentlichen senkrecht zur Längsachse der Rohre 12 angeordnet. Das Verteilerelement 22 hat vorzugsweise einen kreisförmigen Querschnitt, um die später anhand der Fig. 2 dargestellte Rotation zu ermöglichen, gleichzeitig aber auch ein wie in Fig. 1 dargestelltes Anliegen an den Rohren 12 beidseits der Rohrgasse zu ermöglichen. Auch andere Querschnittsformen sind allerdings denkbar, solange nur die Rotation der Verteilerelemente möglich ist, damit diese ausgebaut werden können. Wenn in Fig. 1 auch ein Anliegen zwischen dem Verteilerelement 22 und den einzelnen Rohren 12 dargestellt ist, so sollte deutlich sein, dass auch ein geringer Zwischenraum zwischen diesen Elementen möglich sein sollte, um auch nach einem Betrieb mit verschmutzender Wirkung, bei erhöhten Temperaturen und möglicherweise unterschiedlichen Wärmedehnungen der Bauelemente das erfindungsgemäße Entnehmen des Verteilerelements 22 aus dem Rohrbündel zu ermöglichen.The in Fig. 1 illustrated section of a tube bundle heat exchanger according to the invention with a pipe support with integrated cleaning device consists of a distributor element 22, which, as shown, extends into a pipe passage of the tube bundle heat exchanger. In this case, the distributor element 22 is arranged substantially perpendicular to the longitudinal axis of the tubes 12. The distributor element 22 preferably has a circular cross-section in order to be described later with reference to FIGS Fig. 2 illustrated rotation, but at the same time a as in Fig. 1 represented concerns to allow the pipes 12 on both sides of the pipe alley. Other cross-sectional shapes are However, conceivable as long as only the rotation of the distributor elements is possible, so that they can be removed. When in Fig. 1 Also, a concern between the distributor element 22 and the individual tubes 12 is shown, it should be clear that even a small gap between these elements should be possible, even after operation with a polluting effect, at elevated temperatures and possibly different thermal expansions of the components to allow the inventive removal of the distributor element 22 from the tube bundle.

Das Verteilerelement 22 ist mit einer Vielzahl von Austrittsöffnungen 24 versehen, von denen nur einige in Fig. 1 mit Referenzziffer bezeichnet sind. Im dargestellten Ausführungsbeispiel sind jeweils zwei Austrittsöffnungen einem Rohr 12 zugeordnet, so dass das Rohr möglichst auf dem gesamten, dem Verteilerelement 22 zugewandten Umfangsbereich mit Reinigungsmedium, vorzugsweise einer Reinigungsflüssigkeit, beaufschlagt werden kann. Die Austrittsöffnungen 24 können als Düsen ausgestaltet sein, aus denen das im inneren Hohlraum 30 des Verteilerelements 22 antransportierte Reinigungsmedium unter erhöhten Druck austritt. In gleicher Weise ist es aber auch möglich, das Reinigungsmedium ohne nennenswertem Druck und ohne das Vorsehen einer düsenartigen Verengung schwallartig austreten zu lassen, so dass das Reinigungsmedium als Film entlang der Rohre 12 entlang strömt. Bei einem Rohrbündel-Wärmeaustauscher mit vertikalen Rohren 12 ist die in Fig. 1 dargestellte Ansicht vorzugsweise eine Ansicht von unten, d.h. die Austrittsöffnungen 24 sind nach unten angeordnet und ermöglichen somit die Erzeugung eines Reinigungsfilms, der an dem gesamten, dem Verteilerelement 22 zugewandten Umfangsbereich des Rohres entlang nach unten strömen kann.The distributor element 22 is provided with a plurality of outlet openings 24, of which only a few in Fig. 1 are denoted by reference numeral. In the illustrated embodiment, two outlet openings are each associated with a tube 12 so that the tube can be acted upon with cleaning medium, preferably a cleaning liquid, preferably on the entire circumferential area facing the distributor element 22. The outlet openings 24 may be configured as nozzles, from which the cleaning medium transported in the inner cavity 30 of the distributor element 22 exits under increased pressure. In the same way, it is also possible to let the cleaning medium without appreciable pressure and without the provision of a nozzle-like constriction gush out, so that the cleaning medium flows as a film along the tubes 12 along. In a shell-and-tube heat exchanger with vertical tubes 12, the in Fig. 1 2, the outlet openings 24 are arranged downwards and thus allow the generation of a cleaning film which can flow down the entire, the distributor element 22 facing the peripheral region of the tube along.

Neben der in Fig. 1 dargestellten Geometrie mit jeweils zwei Austrittsöffnungen 24, die einem einzelnen Rohr 12 zugeordnet sind, sind selbstverständlich auch andere, hiervon abweichende Geometrien möglich, die insbesondere auf das verwendete Reinigungsmedium und Art und Umfang des zu entfernenden Schmutzes abgestimmt sind. Um die reinigende Wirkung des Flüssigkeitsfilms zu verbessern, kann es vorteilhaft sein, beispielsweise die Abstützelemente 26 mit Öffnungen zu versehen und die Rohre über die Abstützelemente mit Reinigungsmedium zu beaufschlagen. Solche Öffnungen an den Abstützelementen können auch zusätzlich zu den Öffnungen an den Verteilerelementen angeordnet sein.In addition to the in Fig. 1 shown geometry, each with two outlet openings 24, which are assigned to a single tube 12, are of course others, hereof deviating geometries possible, which are particularly tailored to the cleaning medium used and the nature and extent of the dirt to be removed. In order to improve the cleaning effect of the liquid film, it may be advantageous, for example, to provide the support elements 26 with openings and to act on the pipes via the support elements with cleaning medium. Such openings on the support elements may also be arranged in addition to the openings on the distributor elements.

Von dem Verteilerelement 22 erstrecken sich beidseits des Verteilerelements Abstützelemente 26a, 26b in den Zwischenraum zwischen zwei nebeneinander angeordneten Rohren längs einer Seite des Verteilerelements 22. Die Abstützelemente 26 sind dabei diametral zueinander auf beiden Seiten des Verteilerelements 22 angeordnet, damit die später anhand der Fig. 2 dargestellte Rotationsbewegung vor dem Entnehmen der Verteilerelemente 22 möglich ist. In Fig. 1 ist auch der Zwischenraum 28 zwischen zwei Gruppen von jeweils in größerem Abstand zueinander beabstandeten Rohren 12 dargestellt. Im Bereich eines derartigen Zwischenraums können, wie in Fig. 1 dargestellt ist, mehrere Abstützelemente 26' vorgesehen sein, die nur eine geringe Erstreckung in Längsrichtung des Verteilerelements 22 aufweisen. Die übrigen Abstützelemente 26a und 26b sind vorzugsweise so dimensioniert, dass ihre Erstreckung in Längsrichtung des Verteilerelements 22 dem geringsten Abstand zwischen zwei benachbarten Rohren 12 entspricht. Weiterhin sind die Abstützelemente 26 in einer Richtung senkrecht zur Längserstreckung der Verteilerelemente 22 sowie senkrecht zur Längsrichtung der Rohre 12 so dimensioniert, dass sie sich zumindest bis über den geringsten Abstand zwischen zwei nebeneinander angeordneten Rohren 12 erstrecken. Durch diese Maßnahme wird sichergestellt, dass die Abstützelemente 26 tangential am Außenumfang der benachbarten Rohre 12 anliegen und somit die Rohre zueinander fixieren. Die Erstreckung der Abstützelemente 26 senkrecht zur Zeichenebene der Fig. 1, d.h. in Längsrichtung der Rohre muss geringer sein als die Weite der Rohrgasse, die im Ausführungsbeispiel nach Fig. 1 dem Außendurchmesser des Verteilerelements 22 entspricht.Support elements 26a, 26b extend from the distributor element 22 on both sides of the distributor element into the intermediate space between two juxtaposed tubes along one side of the distributor element 22. The support elements 26 are arranged diametrically opposite one another on both sides of the distributor element 22, so that the later will be described with reference to FIGS Fig. 2 shown rotational movement before removal of the distributor elements 22 is possible. In Fig. 1 Also, the gap 28 between two groups of each spaced apart at a greater distance tubes 12 is shown. In the area of such a gap, as in Fig. 1 is shown, a plurality of support elements 26 'may be provided, which have only a small extension in the longitudinal direction of the distributor element 22. The remaining support elements 26a and 26b are preferably dimensioned so that their extension in the longitudinal direction of the distributor element 22 corresponds to the smallest distance between two adjacent tubes 12. Furthermore, the support elements 26 are dimensioned in a direction perpendicular to the longitudinal extent of the distributor elements 22 and perpendicular to the longitudinal direction of the tubes 12 so that they extend at least to the smallest distance between two adjacent tubes 12. By this measure it is ensured that the support elements 26 abut tangentially on the outer circumference of the adjacent tubes 12 and thus fix the tubes to each other. The extension of the support elements 26 perpendicular to the plane of the Fig. 1 . ie in the longitudinal direction of the tubes must be less than the width of the pipe alley, according to the embodiment Fig. 1 the outer diameter of the distributor element 22 corresponds.

In Fig. 2 sind mehrere nebeneinander angeordnete Rohre 12 in Längsrichtung dargestellt. Zwischen jeweils zwei benachbarten Rohren ist jeweils ein Verteilerelement dargestellt, wobei in benachbarten Rohrgassen angeordnete Verteilerelemente in Bezug auf ihre Höhe in einer oder mehreren Ebenen angeordnet sein können. Eine vorteilhafte Ausführung ergibt sich bei versetzter Anordnung, da so das Abfließen des Reinigungsmediums verbessert wird, das über eine möglicherweise oberhalb der beschriebenen Rohrabstützung angeordneten Reinigungseinrichtung aufgegeben wird. Die Bezugnahme auf die Höhe erfolgt unter der Voraussetzung, dass es sich um einen Wärmeaustauscher mit vertikal angeordneten Rohren 12 handelt. Die Verteilerelemente 22a und 22c liegen auf derselben Höhe, während das Verteilerelement 22b ausreichend weit in Bezug auf die Höhe versetzt ist, dass dieses um seine Längsachse rotiert werden kann. Dies wird anhand der Verteilereinrichtung 22b mit den Abstützelementen 26b dargestellt. Mit durchgezogenen Linien ist in Fig. 2 die Betriebsposition des Verteilerelements 22b mit den daran angebrachten Abstützelementen 26b gezeigt. Dies entspricht der in Fig. 1 dargestellten Position, in der die einzelnen Abstützelemente 26b zwischen benachbarten Rohren angeordnet sind und diese relativ zueinander fixieren. Mit unterbrochenen Linien ist in Fig. 2 die Position 26'b gezeigt, bei der das Verteilerelement 22b um 90° um seine Längsachse gedreht wurde, so dass die diametral daran angeordneten Abstützelement 26b in die Rohrgasse bewegt werden und in der mit 26'b dargestellten Position durch ein Längsbewegen des Verteilerelements 22b gemeinsam mit diesem aus dem Rohrbündel-Wärmetauscher entfernt werden können.In Fig. 2 Several juxtaposed tubes 12 are shown in the longitudinal direction. Between each two adjacent tubes in each case a distributor element is shown, wherein arranged in adjacent pipe routes distributor elements can be arranged with respect to their height in one or more planes. An advantageous embodiment results in staggered arrangement, since so the drainage of the cleaning medium is improved, which is placed over a possibly arranged above the described pipe support cleaning device. The reference to the height is made on condition that it is a heat exchanger with vertically arranged tubes 12. The distribution elements 22a and 22c are at the same height, while the distribution element 22b is offset sufficiently far in relation to the height that it can be rotated about its longitudinal axis. This is illustrated by the distribution device 22b with the support elements 26b. With solid lines is in Fig. 2 show the operating position of the distributor element 22b with the support elements 26b attached thereto. This corresponds to the in Fig. 1 shown position in which the individual support members 26b are disposed between adjacent tubes and fix them relative to each other. With broken lines is in Fig. 2 position 26'b, in which the distributor element 22b has been rotated by 90 ° about its longitudinal axis, so that the support elements 26b arranged diametrically thereon are moved into the pipe path and in the position shown by 26'b by a longitudinal movement of the distributor element 22b can be removed with this from the tube bundle heat exchanger.

In Fig. 2 ist noch einmal die Erstreckung der Abstützelemente 26b in Längsrichtung der Rohre 12 dargestellt, die geringer sein muss als die lichte Weite der Rohrgasse, so dass nach der Drehung des Verteilerelements diese aus dem Rohrbündel-Wärmeaustauscher entnommen werden können.In Fig. 2 is again the extension of the support members 26b shown in the longitudinal direction of the tubes 12, the lower must be as the clear width of the pipe line, so that after the rotation of the distributor element, these can be removed from the tube bundle heat exchanger.

In Fig. 3 schließlich ist in Erweiterung der Fig. 1 dargestellt, dass Verteilerelemente 22 in jeder Rohrgasse des Rohrbündel-Wärmetauschers angeordnet werden können, so dass jedes einzelne Rohr 12 exakt lagefixiert wird. Durch die unterbrochene Linie am Verteilerelement 22b sowie dem zugehörigen Abstützelement 26b wird deutlich, dass dieses in einer unterschiedlichen Höhe zu den benachbarten Verteilerelementen 22a und 22d entsprechend der Darstellung in Fig. 2 angeordnet sein kann. Wie am Beispiel eines beliebigen Rohres 12 in Fig. 3 deutlich wird, sind die einzelnen Rohre auf zwei Seiten durch benachbarte Verteilerelemente fixiert, wohingegen eine Bewegung senkrecht hierzu und senkrecht zur Längsrichtung der Rohre durch die Abstützelemente 26 sowohl des einen benachbarten Verteilerelements wie auch des anderen benachbarten Verteilerelements ausgeschlossen ist. Weiterhin sind aus Fig. 3 die Austrittsöffnungen 24 ersichtlich, durch welche jedes einzelne Rohr 12 von mindestens einer oder mehreren, hier vier unterschiedlichen Stellen her mit Reinigungsfluid beaufschlagt wird. Auf diese Weise lässt sich eine gute Reinigungswirkung erzielen, gleichzeitig aber auch das Rohrbündel exakt in seiner Lage fixieren. Durch Rotieren der einzelnen Verteilerelemente kann zudem, wie anhand der Fig. 2 erläutert wurde, jedes Verteilerelement gesondert aus dem Wärmeaustauscher entnommen und ausgetauscht, aber auch bequem in Bezug auf seine Höhe neu eingestellt werden.In Fig. 3 Finally, in extension of Fig. 1 illustrated that distributor elements 22 can be arranged in each pipe passage of the tube bundle heat exchanger, so that each individual tube 12 is exactly fixed in position. By the broken line on the distributor element 22b and the associated support element 26b it is clear that this at a different height to the adjacent distributor elements 22a and 22d as shown in FIG Fig. 2 can be arranged. As with the example of any tube 12 in Fig. 3 is clear, the individual tubes are fixed on two sides by adjacent distributor elements, whereas a movement perpendicular thereto and perpendicular to the longitudinal direction of the tubes is excluded by the support members 26 of both an adjacent distributor element as well as the other adjacent distributor element. Furthermore are out Fig. 3 the outlet openings 24 can be seen, through which each individual tube 12 is acted upon by cleaning fluid from at least one or more, here four different locations. In this way, a good cleaning effect can be achieved, but at the same time fix the tube bundle exactly in its position. By rotating the individual distribution elements can also, as based on the Fig. 2 has been explained, each distribution element separately removed from the heat exchanger and replaced, but also be easily adjusted in terms of its height.

Der Vorteil der vorliegenden Erfindung besteht darin, eine Rohrabstützung mit integrierter Reinigungseinrichtung so auszugestalten, dass diese bequem austauschbar ist, so dass ein Rohrbündel-Wärmeaustauscher mit erfindungsgemäßen Rohrabstützungen schnell und variabel auf den jeweiligen Anwendungsfall konzipiert oder, falls betrieblich notwendig, ausgetauscht werden kann.The advantage of the present invention is, a pipe support with integrated cleaning device in such a way that it is easily interchangeable, so that a tube bundle heat exchanger with pipe supports according to the invention quickly and variably to the respective Application designed or, if necessary, can be replaced.

Zusätzlich zu der erfindungsgemäßen Ausgestaltung der Rohrabstützung mit integrierter Reinigungseinrichtung können aber auch zusätzliche Maßnahmen zur Verbesserung der Reinigungswirkung verwirklicht werden, wie die anhand der Fig. 4 dargestellten zusätzlichen Austrittsdüsen für Reinigungsmedium auf der stromaufwärts gelegenen Seite des Rohrbündel-Wärmeaustauschers.In addition to the inventive design of the pipe support with integrated cleaning device but also additional measures to improve the cleaning effect can be realized as the basis of the Fig. 4 shown additional cleaning fluid outlet nozzles on the upstream side of the shell and tube heat exchanger.

Claims (10)

  1. Tube bundle heat exchanger having a plurality of tubes (12) or pipes arranged to be parallel, and having a tube support with integrated cleaning device, wherein the tube support comprises:
    - distributor elements (22; 22a, 22b, 22c) which can be introduced into tube ducts of the heat exchanger (10) and through which cleaning medium can flow through an inner cavity (30);
    - openings (24) which are in flow connection with the inner cavity (30);
    characterised by
    - supporting elements (26; 26a, 26b, 26c, 26') which extend in each case from the distributor element (22; 22a, 22b, 22c) and have dimensions so as to extend into the gap between two adjacent tubes (12) or pipes arranged along the distributor element (22; 22a, 22b, 22c); wherein
    - the supporting elements (26; 26a, 26b, 26c, 26') have an extension in the longitudinal direction of the tubes (12) or pipes which is less than the internal diameter of the associated tube duct; and
    - the distributor elements (22; 22a, 22b, 22c) with associated supporting elements (26; 26a, 26b, 26c, 26') can be rotated in each case by a joint rotation about the longitudinal axis of the distributor element to a position in which they can be removed from the bundle heat exchanger (10).
  2. Tube bundle heat exchanger according to claim 1, characterised in that the supporting elements (26; 26a, 26b, 26c, 26') are arranged only on one longitudinal side of a distributor element (22; 22a, 22b, 22c).
  3. Tube bundle heat exchanger according to claim 1, characterised in that the supporting elements (26; 26a, 26b, 26c, 26') are arranged on two opposite longitudinal sides of a distributor element (22; 22a, 22b, 22c).
  4. Tube bundle heat exchanger according to one of the preceding claims, characterised in that distributor elements (22; 22a, 22b, 22c) are arranged in any parallel tube duct of the tube bundle heat exchanger (10).
  5. Tube bundle heat exchanger according to one of the preceding claims, characterised in that the openings (24) are arranged so that in each case a tube (12) and at least one opening (24) of a distributor element (22; 22a, 22b, 22c) can be exposed to cleaning medium.
  6. Tube bundle heat exchanger according to one of the preceding claims, characterised in that the openings (24) are arranged so that a distributor element (22; 22a, 22b, 22c) exposes two rows of tubes (12) or pipes on both sides of the tube duct to cleaning medium.
  7. Tube bundle heat exchanger according to one of the preceding claims, characterised in that the supporting elements (26; 26a, 26b, 26c, 26') have an extension vertically to the longitudinal direction of the tubes (12) or pipes which corresponds at least to the radius of the tubes (12) or pipes.
  8. Tube bundle heat exchanger according to one of the preceding claims, characterised in that the supporting elements (26; 26a, 26b, 26c, 26') have openings (24).
  9. Tube bundle heat exchanger according to one of the preceding claims, characterised in that the distributor elements (22; 22a, 22b, 22c) and the supporting elements (26; 26a, 26b, 26c) have openings (24).
  10. Tube bundle heat exchanger according to claim 1, further comprising additional cleaning nozzles (20) on the side of the tube bundle heat exchanger (10) placed upstream.
EP07021545.4A 2006-11-15 2007-11-06 Tube bundle heat exchanger with a pipe support with integrated cleaning device Not-in-force EP1923652B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610053812 DE102006053812B4 (en) 2006-11-15 2006-11-15 Pipe support with integrated cleaning device

Publications (3)

Publication Number Publication Date
EP1923652A2 EP1923652A2 (en) 2008-05-21
EP1923652A3 EP1923652A3 (en) 2012-05-30
EP1923652B1 true EP1923652B1 (en) 2016-02-24

Family

ID=39123124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07021545.4A Not-in-force EP1923652B1 (en) 2006-11-15 2007-11-06 Tube bundle heat exchanger with a pipe support with integrated cleaning device

Country Status (3)

Country Link
EP (1) EP1923652B1 (en)
DE (1) DE102006053812B4 (en)
PL (1) PL1923652T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009031969A1 (en) * 2009-07-06 2011-01-13 Babcock Borsig Service Gmbh Pipe register for indirect heat exchange
CN114152114B (en) * 2022-02-10 2022-06-10 潍坊金健钛设备有限公司 Tube type heat exchanger
CN117804253A (en) * 2024-02-29 2024-04-02 陕西中博工业制冷设备有限公司 Water heat exchange equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1119437A (en) * 1954-05-13 1956-06-20 Green & Son Ltd Corrosion protection device in heat recovery units

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1027701B (en) * 1956-08-24 1958-04-10 Licentia Gmbh Tube heat exchangers, especially for gas turbines
DE1948739U (en) * 1964-11-12 1966-11-03 Hoechst Ag PIPE HEAT EXCHANGER WITH CLEANING DEVICE.
DE6606681U (en) * 1968-03-05 1970-11-19 Heinrich Habermann Fa CHARGE AIR COOLER FOR DIESEL ENGINES
US5186240A (en) * 1991-08-02 1993-02-16 King Company Coil cleansing assembly
DE19515291C2 (en) * 1995-04-26 1998-08-13 Gea Luftkuehler Happel Gmbh Device for cleaning heat exchangers
DE502004007534D1 (en) * 2003-08-22 2008-08-21 Moeritz Martin Process for the cleaning of lamellae heat exchangers in ventilation systems

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1119437A (en) * 1954-05-13 1956-06-20 Green & Son Ltd Corrosion protection device in heat recovery units

Also Published As

Publication number Publication date
DE102006053812A1 (en) 2008-05-21
PL1923652T3 (en) 2016-09-30
EP1923652A2 (en) 2008-05-21
DE102006053812B4 (en) 2008-08-14
EP1923652A3 (en) 2012-05-30

Similar Documents

Publication Publication Date Title
EP0495385B1 (en) Process for material exchange between liquid and gazeous fluids
DE102008011558B4 (en) heat exchangers
DE19648128C2 (en) Grate for a furnace
DE2805671C2 (en)
EP0213380B1 (en) Soot blower
DE3206625C2 (en) Retractable sootblower
EP1923652B1 (en) Tube bundle heat exchanger with a pipe support with integrated cleaning device
CH676603A5 (en)
EP0931600A2 (en) Device for descaling rolled material
WO2016131787A1 (en) Shell and tube heat exchanger having sequentially arranged shell and tube components
DE2933720A1 (en) LIQUID DISTRIBUTION DEVICE FOR COOLING TOWERS
EP0802384A2 (en) Heat exchanger
DE2429864A1 (en) HORIZONTAL HEAT EXCHANGER WITH CONCENTRIC DOUBLE TUBE FOR FIBER-CONTAINING FLUID
DE69102879T2 (en) GAS COOLER FOR HEAT TRANSFER BY CONVECTION.
DE102016113137A1 (en) Gas-fluid counterflow heat exchanger
DE3420117C2 (en)
DE3908277C2 (en) Protection against erosion for heat exchangers
DD274886A5 (en) VENTURIC HEATER FOR A SMOKE-GAS SINKING DEVICE
DE4344480A1 (en) Flexible heat exchanger for heat recovery from exhaust gases etc.
EP2853852B1 (en) Installation element for a device for treating a usage fluid by means of a working fluid
DE19515291C2 (en) Device for cleaning heat exchangers
DE4120251C2 (en) Water pipe heat exchanger with inclined pipes
DE4244301C2 (en) Impact cooling device
DE102008038663A1 (en) Heat exchanger comprises pipe bundle which consists of pipes made of plastic and running parallel to each other, where supporting pipe ridges are arranged as spacers with distance from each other
EP1952063A1 (en) Device and method for cleaning the exhaust gases in heating installations with simultaneous heat recovery and with dust removal

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RIC1 Information provided on ipc code assigned before grant

Ipc: F28G 9/00 20060101ALI20120420BHEP

Ipc: F28F 9/013 20060101AFI20120420BHEP

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20121130

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20141222

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150930

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 776944

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160315

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007014571

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160624

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007014571

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20161125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160524

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20161106

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161106

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161106

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20071106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160224

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20181102

Year of fee payment: 12

Ref country code: PL

Payment date: 20181022

Year of fee payment: 12

Ref country code: CZ

Payment date: 20181003

Year of fee payment: 12

Ref country code: DE

Payment date: 20181126

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20181114

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007014571

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191130

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191106

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 776944

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200603

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191106