EP0251213B1 - Apparatus for cleaning the inner or outer walls of standing or hanging heat exchanger tubes - Google Patents

Apparatus for cleaning the inner or outer walls of standing or hanging heat exchanger tubes Download PDF

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Publication number
EP0251213B1
EP0251213B1 EP87109148A EP87109148A EP0251213B1 EP 0251213 B1 EP0251213 B1 EP 0251213B1 EP 87109148 A EP87109148 A EP 87109148A EP 87109148 A EP87109148 A EP 87109148A EP 0251213 B1 EP0251213 B1 EP 0251213B1
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EP
European Patent Office
Prior art keywords
pipes
pipe
collecting
heat exchanger
tubes
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.)
Expired
Application number
EP87109148A
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German (de)
French (fr)
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EP0251213A1 (en
Inventor
Frohmut Dipl.-Ing. Vollhardt
Hans Dipl.-Ing. Krämer
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MAN Gutehoffnungshutte GmbH
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MAN Gutehoffnungshutte GmbH
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Publication date
Priority claimed from DE19863621850 external-priority patent/DE3621850A1/en
Application filed by MAN Gutehoffnungshutte GmbH filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0251213A1 publication Critical patent/EP0251213A1/en
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Publication of EP0251213B1 publication Critical patent/EP0251213B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/023—Cleaning the external surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F23J3/023—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the fireside of watertubes in boilers
    • 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
    • F28G7/00—Cleaning by vibration or pressure waves

Definitions

  • the invention relates to a device for cleaning the inner or outer wall of standing or hanging pipes of heat exchangers, in particular the pipes for waste incineration devices, according to the preamble of the main claim.
  • a device that vibrates them acts on the support tubes.
  • the supporting tubes have at least one preferably right-angled bend in their course between the distributor and the collector.
  • the device which generates the vibration consists of a tappet member which is non-positively connected to the support tube near its bend and an element which moves it (vibrator, drop hammer, lifting cam or the like).
  • the plunger member is designed as a suspension for the support tube.
  • the object of the invention is to improve the device of the prior art, to intensify the cleaning if desired, but in any case to achieve a more favorable mechanical stress on the parts which bring about the lifting movement and absorb the weight of the row of pipes.
  • easy accessibility should be made possible.
  • the device provides the features of the characterizing part of the main claim to solve this problem.
  • the features of the subclaims serve to improve and further develop the features of the main claim.
  • the essence of the invention is to be seen in the separation of the lifting device and the collecting device for the rows of pipes, the lifting device determining the starting position of the row of pipes, as in that the parts of the lifting device and the collecting device are arranged outside the heat exchanger and therefore easily monitored there and can be repaired if necessary.
  • the control devices for the lifting devices are also provided outside the heat exchanger and can thus also be attached to existing heat exchangers of the generic type with the entire lifting and collecting device.
  • Fig. 1 illustrates a waste heat boiler downstream of a waste incineration plant, as is known from DE-C3-2 341 444.
  • This waste heat boiler has a bottom wall (1) and the two front and rear walls (2, 3) as well as the ceiling (4) and the side walls (5).
  • In the interior (6) of the boiler tubes (7, 8) are arranged hanging, which in the present case are designed as fin tubes, the longitudinal edges of the fins being connected to one another in such a way that adjacent tubes (7, 8) each form a fin tube wall.
  • the tubes (8) are offset in the longitudinal direction with respect to the tubes (7), so that there is an intermediate space (7a, 7) at the upper end of the tubes (8) and their fins and at the lower end of the tubes (7). 8a) results.
  • fin tubes instead of the fin tubes, other types of tubes with a different arrangement and different flow of the adhering particles with leading gases can also be provided.
  • B those that are arranged as individual tubes hanging in the interior (6) of the boiler. It is essential that the pipes (7, 8) in question are freely movable in their entire length in the direction of the double arrows S irrespective of the distribution and collecting lines to be described below, in order to achieve the purpose of the invention. (A movable section of the pipes due to thermal expansion with compensating agent is not meant here.)
  • the pipes (7) open into a lower distribution line (13), which are connected to a boiler drum via a line (not shown), and into an upper header line (14), which is connected via a second line is also connected to the boiler.
  • the tubes (8) are connected in the same way to a lower distributor line (15) and an upper manifold (16) and are connected to the boiler drum via a line and a further line.
  • the two side walls (5a, 5b) of the waste heat boiler (Fig. 2, 6 and 7) are lined with fin tubes (17) lying side by side, which form a closed wall. These fin tubes and the side walls (5a, 5b) are penetrated by the collecting tubes (14, 16), for which purpose these are passed through a tube socket (18).
  • the ends (14a, 16a) of the header pipes protruding from the side walls (5a, 5b) carry a sleeve (19) which has an upwardly directed support rib (20). This is pivotally connected via a bolt (21) to a fork (22), which in turn is connected to the piston rod (23) of a hanging pneumatic cylinder-piston unit (24), which, for example, with the aid of suitable means (25).
  • the two cylinder piston units (24) on each side of the waste heat boiler, i.e. outside the side walls (5a, 5b) of the boiler are connected to one another via a common line (27) which leads to a valve (28), the inlet and outlet of which bear the reference numbers (29, 30).
  • This valve (28) determines the pressure conditions in the cylinder piston unit (24) for raising or lowering the collecting pipes (14, 16) and the pipes (7, 8) attached to them and is controlled hydraulically, pneumatically or electrically via lines (31, 32) . In this way, the manifold (14, 16) of each row of tubes from the tubes (7, 8) can be raised and lowered equally.
  • This is attached to a suitable traverse (34) and has several layers of metallic or other types of plates (35) arranged one above the other. These take up a yoke (36) which is formed from a central section (37) and two jaws (38, 39).
  • the jaws on the legs (40, 41) of the yoke have a curvature on their concave top, which is inclined towards one another, which corresponds to the curvature of the circumference of the sleeve (19).
  • the height of the two jaws is offset in relation to the plates (35) and the crossmember (34).
  • the jaw (39) has an average height a compared to the crossmember (34), while the jaw (38) has an average height b, which is recognizably greater than the height a.
  • the manifolds (14, 16) with the tubes (7, 8) hanging thereon are subject to the action of gravity when the cylinder-piston units are depressurized, so that the parts are suddenly lowered. If this lowering is also to be accelerated, the cylinder-piston units (24) are acted upon via the line (100) when the counter-line (27) is depressurized.
  • the fins (49) of the tubes (17) which line the wall (5a) have a fin or fin (50) which is continuous over the length of the tubes (7, 8). (Only one fin or fin 50 for a row of tubes is shown in FIG. 6.
  • Such a fin or fin is associated with each row of tubes.
  • the tube (7, 8) adjacent to the tube wall (5a) also carries one opposite this fin or fin the length of this tube continuous rib or fin (51). With its edges (50a, 50b), the rib or fin (50) encompasses the edge (51a) of the rib or fin (51), these edges slidingly abutting one another.
  • the rib or fin (51) has cam-shaped projections (52) on its edge (51a), which have the wedge surfaces (53).
  • the edge (50c) of the rib or fin (50) carries at the same distance as the projections (52) lugs (54) with wedge surfaces (55) on which the oblique wedge surfaces (53) of the cam-shaped projection (52) slide when the Row of tubes from the tubes (7, 8) with the manifold (14, 16) in the direction of arrow K (Fig. 6) is raised or lowered.
  • the tubes (7, 8) are suddenly laterally offset parallel to themselves in the direction of the arrows L.
  • the tube wall (5b) opposite the tube wall (5a) (cf. FIG. 2) is designed accordingly with the tube (7, 8) adjacent to this wall.

Description

Die Erfindung betrifft eine Einrichtung zum Reinigen der Innen oder Außenwand stehender oder hängender Rohre von Wärmetauschern, insbesondere der Rohre nach Müllverbrennungseinrichtungen, nach dem Oberbegriff des Hauptanspruches.The invention relates to a device for cleaning the inner or outer wall of standing or hanging pipes of heat exchangers, in particular the pipes for waste incineration devices, according to the preamble of the main claim.

Bei einem Wärmetauscher (DE-U-7 730 080) mit in einem vom wärmeabgebenden Medium lotrecht durchströmten Zug nebeneinander angeordneten, vom wärmeaufnehmenden Medium durchflossenen Rohrtafeln aus jeweils in einer lotrechten Ebene liegenden U- oder mäanderförmig gebogenen Rohren, die an einem mit einem unteren Verteiler und oberen Sammler verbundenen lotrechten Tragrohr angeschlossen sind, greift an den Tragrohren eine diese in Schwingung versetzende Vorrichtung an. Die Tragrohre weisen in ihrem Verlauf zwischen Verteiler und Sammler wenigstens eine vorzugsweise rechtwinklige Abbiegung auf. Die die Schwingung erzeugende Vorrichtung besteht aus einem mit dem Tragrohr nahe dessen Abbiegung kraftschlüssig verbundenen Stößelglied und einem dieses bewegenden Element (Vibrator, Fallhammer, Hubnocken od. dgl.). Das Stößelglied wird als Aufhängung für das Tragrohr ausgebildet.In a heat exchanger (DE-U-7 730 080) with tubes arranged next to one another in a train through which the heat-emitting medium flows perpendicularly and through which the heat-absorbing medium flows, each of which is made of U-shaped or meandering-shaped pipes which are in a vertical plane and which are connected to a lower distributor and connected to the upper header connected vertical support tube, a device that vibrates them acts on the support tubes. The supporting tubes have at least one preferably right-angled bend in their course between the distributor and the collector. The device which generates the vibration consists of a tappet member which is non-positively connected to the support tube near its bend and an element which moves it (vibrator, drop hammer, lifting cam or the like). The plunger member is designed as a suspension for the support tube.

Der Erfindung liegt in Verbesserung der Einrichtung des Standes der Technik die Aufgabe zugrunde, die Reinigung gewünschtenfalls zu intensivieren, auf jeden Fall aber eine günstigere mechanische Beanspruchung der Teile zu erreichen, die die Hubbewegung bewirken und das Gewicht der Rohrreihe aufzufangen. Außerdem soll eine leichte Zugänglichkeit ermöglicht werden.The object of the invention is to improve the device of the prior art, to intensify the cleaning if desired, but in any case to achieve a more favorable mechanical stress on the parts which bring about the lifting movement and absorb the weight of the row of pipes. In addition, easy accessibility should be made possible.

Die Einrichtung sieht zur Lösung dieser Aufgabe die Merkmale des kennzeichnenden Teils des Hauptanspruches vor. Die Merkmale der Unteransprüche dienen der Verbesserung und Weiterentwicklung der Merkmale des Hauptanspruchs.The device provides the features of the characterizing part of the main claim to solve this problem. The features of the subclaims serve to improve and further develop the features of the main claim.

Das Wesen der Erfindung ist in der Trennung der Hubvorrichtung und der Auffangvorrichtung für die Rohrreihen ebenso zu sehen, wobei die Hubvorrichtung die Ausgangslage der Rohrreihe bestimmt, wie darin, daß die Teile der Hubvorrichtung und der Auffangvorrichtung außerhalb des Wärmetauschers angeordnet werden und daher dort leicht überwacht und notfalls repariert werden können. Die Steuereinrichtungen für die Hubvorrichtungen sind ebenfalls außerhalb des Wärmetauschers vorgesehen und können somit auch mit der gesamten Hub- und Auffangvorrichtung an bestehenden Wärmetauschern der oberbegrifflichen Art angebaut werden.The essence of the invention is to be seen in the separation of the lifting device and the collecting device for the rows of pipes, the lifting device determining the starting position of the row of pipes, as in that the parts of the lifting device and the collecting device are arranged outside the heat exchanger and therefore easily monitored there and can be repaired if necessary. The control devices for the lifting devices are also provided outside the heat exchanger and can thus also be attached to existing heat exchangers of the generic type with the entire lifting and collecting device.

Auf der Zeichnung sind Ausführungsbeispiele der erfindungsgemäßen Einrichtung dargestellt, und zwar zeigt:

  • Fig. 1 den schematischen vertikalen Querschnitt durch den Wärmetauscher mit hängenden Flossenrohren, von denen die auf gleicher Höhe liegenden Rohre eine Rohrwand derart bilden, daß die Rauchgase mäanderförmig durch den Austauscher geführt werden,
  • Fig. 2 den oberen Abschnitt des Wärmetauschers mit einem oberen Sammelrohr, mit daran hängenden Tauscherrohren und den beiden Hubvorrichtungen und Auffangvorrichtungen an den Sammelrohrenden,
  • Fig. 3 und 4 in gegenüber Fig. 2 vergrößerten Maßstab die Hub- und die Auffangvorrichtung an den Enden der Sammelrohre,
  • Fig. 5 die Auffangvorrichtung für die Enden der Sammelrohre und die Verbindungsmittel zwischen diesen Enden und dem Zylinderkolben der Hubvorrichtung in vergrößertem Maßstab gegenüber der Fig. 4,
  • Fig. 6 eine Vorrichtung zum zusätzlichen seitlichen
  • und 7 Ausschwingen einer Rohrreihe.
Exemplary embodiments of the device according to the invention are shown in the drawing, namely:
  • 1 shows the schematic vertical cross section through the heat exchanger with hanging fin tubes, of which the tubes lying at the same height form a tube wall in such a way that the flue gases are guided through the exchanger in a meandering manner,
  • 2 the upper section of the heat exchanger with an upper header pipe, with attached exchanger pipes and the two lifting devices and collecting devices at the ends of the header pipe,
  • 3 and 4 in an enlarged scale compared to FIG. 2, the lifting and collecting device at the ends of the collecting tubes,
  • 5 shows the collecting device for the ends of the collecting tubes and the connecting means between these ends and the cylinder piston of the lifting device on an enlarged scale compared to FIG. 4,
  • Fig. 6 shows a device for additional lateral
  • and 7 swinging out of a row of pipes.

Fig. 1 veranschaulicht einen einer Müllverbrennungsanlage nachgeschalteten Abhitzekessel, wie er aus der DE-C3-2 341 444 bekannt ist. Dieser Abhitzekessel weist eine Bodenwand (1) sowie die beiden Vorder- und Rückwände (2, 3) sowie die Decke (4) und die Seitenwände (5) auf. In dem Innenraum (6) des Kessels sind Rohre (7, 8) hängend angeordnet, die in vorliegendem Fall als Flossenrohre ausgebildet sind, wobei die Längsränder der Flossen miteinander derart verbunden sind, daß benachbarte Rohre (7, 8) jeweils eine Flossenrohrwand bilden. Die Rohre (8) sind in Längsrichtung gegenüber den Rohren (7) nach unten versetzt, so daß sich am oberen Ende der Rohre (8) und deren Flossen und am unteren Ende der Rohre (7) und deren Flossen jeweils ein Zwischenraum (7a, 8a) ergibt. Dieser kann durch geeignete Wände (9, 10) oder anderweitig begrenzt sein. Die Rauchgase strömen daher in Richtung der Pfeile A und nehmen einen mäanderförmigen Verlauf, wobei die Rauchgase durch die zwischen den Flossenrohrwänden gebildeten Gassen (11) strömen. Das Rauchgas verläßt bei (12) den Kessel.Fig. 1 illustrates a waste heat boiler downstream of a waste incineration plant, as is known from DE-C3-2 341 444. This waste heat boiler has a bottom wall (1) and the two front and rear walls (2, 3) as well as the ceiling (4) and the side walls (5). In the interior (6) of the boiler tubes (7, 8) are arranged hanging, which in the present case are designed as fin tubes, the longitudinal edges of the fins being connected to one another in such a way that adjacent tubes (7, 8) each form a fin tube wall. The tubes (8) are offset in the longitudinal direction with respect to the tubes (7), so that there is an intermediate space (7a, 7) at the upper end of the tubes (8) and their fins and at the lower end of the tubes (7). 8a) results. This can be limited by suitable walls (9, 10) or otherwise. The flue gases therefore flow in the direction of arrows A and take a meandering course, the flue gases flowing through the alleys (11) formed between the fin tube walls. The flue gas leaves the boiler at (12).

Statt der Flossenrohre können auch andersartige Rohre mit abweichender Anordnung und unterschiedlicher Strömung der anhaftende Partikel mit sich führenden Gase vorgesehen werden, so z. B. solche, die als Einzelrohre hängend in dem Innenraum (6) des Kessels angeordnet sind. Wesentlich ist, das die in Betracht stehenden Rohre (7, 8) ungeachtet untenstehend noch näher zu beschreibender Verteiler- und Sammelleitungen in Richtung der Doppelpfeile S in ihrer gesamten Länge frei beweglich sind, um den Zweck der Erfindung zu erreichen. (Ein beweglicher Abschnitt der Rohre infolge Wärmedehnung mit Kompensationsmittel ist hier nicht gemeint.)Instead of the fin tubes, other types of tubes with a different arrangement and different flow of the adhering particles with leading gases can also be provided. B. those that are arranged as individual tubes hanging in the interior (6) of the boiler. It is essential that the pipes (7, 8) in question are freely movable in their entire length in the direction of the double arrows S irrespective of the distribution and collecting lines to be described below, in order to achieve the purpose of the invention. (A movable section of the pipes due to thermal expansion with compensating agent is not meant here.)

Beim dargestellten Beispiel münden die Rohre (7) in eine untere Verteilerleitung _(13), die über eine nicht dargestellte Leitung mit einer Kesseltrommel verbunden sind, und in eine obere Sammelleitung (14), die über eine zweite Leitung gleichfalls mit dem Kessel in Verbindung steht. Die Rohre (8) sind in gleicher Weise mit einer unteren Verteilerleitung (15) und einer oberen Sammelleitung (16) verbunden und stehen über eine Leitung und eine weitere Leitung mit der Kesseltrommel in Verbindung.In the example shown, the pipes (7) open into a lower distribution line (13), which are connected to a boiler drum via a line (not shown), and into an upper header line (14), which is connected via a second line is also connected to the boiler. The tubes (8) are connected in the same way to a lower distributor line (15) and an upper manifold (16) and are connected to the boiler drum via a line and a further line.

Die oberen zueinander parallelen, waagerechten Sammelleitungen (14, 16) bilden mit den an ihnen hängenden Rohren (7, 8) und den unteren ebenfalls parallelen, waagerechten Verteilerleitungen (13, 15) eine Einheit, die in Rohrlängsrichtung (vgl. Pfeil S in Fig. 1) bewegbar ist.The upper horizontal manifolds (14, 16), which are parallel to each other, form a unit with the pipes (7, 8) hanging from them and the lower horizontal distribution pipes (13, 15), which are also parallel, and which in the longitudinal direction of the pipe (see arrow S in Fig . 1) is movable.

Die beiden Seitenwände (5a, 5b) des Abhitzekessels (Fig. 2, 6 und 7) sind mit nebeneinanderliegenden Flossenrohren (17) ausgekleidet, die eine geschlossene Wand bilden. Diese Flossenrohre sowie die Seitenwände (5a, 5b) werden von den Sammelrohren (14, 16) durchsetzt, wozu diese durch einen Rohrstutzen (18) hindurchgeführt sind. Die aus den Seitenwänden (5a, 5b) herausragenden Enden (14a, 16a) der Sammelrohre tragen eine Muffe (19), die eine aufwärts gerichtete Tragrippe (20) besitzt. Diese ist über einen Bolzen (21) mit einer Gabel (22) schwenkbar verbunden, die ihrerseits mit der Kolbenstange (23) eines hängenden pneumatischen Zylinderkolbenaggregats (24) verbunden ist, das mit Hilfe geeigneter Mittel (25) z. B. an einer Traverse (26) od. dgl. hängt. Die beiden Zylinderkolbenaggregate (24) zu jeder Seite des Abhitzekessels, d.h. außerhalb der Seitenwände (5a, 5b) des Kessels, sind über eine gemeinschaftliche Leitung (27) miteinander verbunden, die zu einem Ventil (28) führt, dessen Zu-und Ableitung die Bezugsziffern (29, 30) tragen. Dieses Ventil (28) bestimmt die Druckverhältnisse in dem Zylinderkolbenaggregat (24) zum Anheben oder Absenken der Sammelrohre (14, 16) und der daran hängenden Rohre (7, 8) und wird hydraulisch, pneumatisch oder elektrisch über Leitungen (31, 32) gesteuert. Auf diese Weise kann das Sammelrohr (14,16) jeder Rohrreihe aus den Rohren (7, 8) gleichmäßig angehoben und ebenso gleichmäßig abgesenkt werden.The two side walls (5a, 5b) of the waste heat boiler (Fig. 2, 6 and 7) are lined with fin tubes (17) lying side by side, which form a closed wall. These fin tubes and the side walls (5a, 5b) are penetrated by the collecting tubes (14, 16), for which purpose these are passed through a tube socket (18). The ends (14a, 16a) of the header pipes protruding from the side walls (5a, 5b) carry a sleeve (19) which has an upwardly directed support rib (20). This is pivotally connected via a bolt (21) to a fork (22), which in turn is connected to the piston rod (23) of a hanging pneumatic cylinder-piston unit (24), which, for example, with the aid of suitable means (25). B. od on a traverse (26). Like. The two cylinder piston units (24) on each side of the waste heat boiler, i.e. outside the side walls (5a, 5b) of the boiler are connected to one another via a common line (27) which leads to a valve (28), the inlet and outlet of which bear the reference numbers (29, 30). This valve (28) determines the pressure conditions in the cylinder piston unit (24) for raising or lowering the collecting pipes (14, 16) and the pipes (7, 8) attached to them and is controlled hydraulically, pneumatically or electrically via lines (31, 32) . In this way, the manifold (14, 16) of each row of tubes from the tubes (7, 8) can be raised and lowered equally.

Auf Höhe der Muffe (19) ist unterhalb derselben die mit der allgemeinen Bezugsziffer (33) versehene Auffangvorrichtung für die Muffe (53) und damit die Rohrenden (14a, 16a) gelegen. Diese ist an einer geeigneten Traverse (34) angebracht und weist mehrere Lagen übereinander angeordneter metallischer oder andersartiger Platten (35) auf. Diese nehmen ein Joch (36) auf, das aus einem mittleren Abschnitt (37) und zwei Backen (38, 39) gebildet ist. Die Backen an den Schenkeln (40,41) des Joches haben an ihrer gegeneinander geneigten konkaven Oberseite eine Krümmung, die der Krümmung des Umfanges der Muffe (19) entspricht. Die beiden Backen sind höhenmäßig gegenüber den Platten (35) bzw. der Traverse (34) höhenversetzt. So besitzt die Backe (39) eine mittlere Höhe a gegenüber der Traverse (34), während die Backe (38) eine mittlere Höhe b aufweist, die erkennbar größer ist als die Höhe a. Trifft die Muffe (19) beim Absenken der Sammelrohre (14, 16) auf das Joch (36), so wird der Rohrreihe mit den Sammelrohren (14, 16) zusätzlich zu dem Aufprall auf dem Joch (36) eine schlagartige seitliche Bewegung in Richtung des Pfeiles F in Fig. 5 vermittelt. Hierzu dient die schwenkbare Aufhängung der Rippe (20) an dem Zylinderkolbenaggregat (24), das zusätzlich noch über ein Gelenk (24a) schwenkbar gelagert sein kann. Wird die Sammelleitung (14, 16) durch die Zylinderkolbenaggregate (24) in ihre obere Lage angehoben, so schwenkt die Rohrreihe mit den Rohren (7, 8) in die in Fig. 5 wiedergegebene Ausgangslage zurück, in der die Muffe (19) symmetrisch über dem Joch (36) steht.At the level of the sleeve (19), the catch device for the sleeve (53), provided with the general reference number (33), and thus the pipe ends (14a, 16a) is located below it. This is attached to a suitable traverse (34) and has several layers of metallic or other types of plates (35) arranged one above the other. These take up a yoke (36) which is formed from a central section (37) and two jaws (38, 39). The jaws on the legs (40, 41) of the yoke have a curvature on their concave top, which is inclined towards one another, which corresponds to the curvature of the circumference of the sleeve (19). The height of the two jaws is offset in relation to the plates (35) and the crossmember (34). Thus, the jaw (39) has an average height a compared to the crossmember (34), while the jaw (38) has an average height b, which is recognizably greater than the height a. If the sleeve (19) hits the yoke (36) when the collecting pipes (14, 16) are lowered, the row of pipes with the collecting pipes (14, 16) becomes an abrupt lateral movement in addition to the impact on the yoke (36) of arrow F in Fig. 5. For this purpose, the pivotable suspension of the rib (20) on the cylinder piston unit (24) is used, which can also be pivotably mounted via a joint (24a). If the manifold (14, 16) is raised to its upper position by the cylinder piston units (24), the row of pipes with the pipes (7, 8) swings back into the starting position shown in FIG. 5, in which the sleeve (19) is symmetrical stands above the yoke (36).

Die Sammelleitungen (14, 16) mit den daran hängenden Rohren (7, 8) unterliegen der Einwirkung der Schwerkraft beim Drucklosmachen der Zylinderkolbenaggregate, so daß ein schlagartiges Absenken der Teile bewirkt wird. Soll dieses Absenken zusätzlich beschleunigt werden, so werden die Zylinderkolbenaggregate (24) über die Leitung (100) bei druckloser Gegenleitung (27) beaufschlagt.The manifolds (14, 16) with the tubes (7, 8) hanging thereon are subject to the action of gravity when the cylinder-piston units are depressurized, so that the parts are suddenly lowered. If this lowering is also to be accelerated, the cylinder-piston units (24) are acted upon via the line (100) when the counter-line (27) is depressurized.

Damit nicht nur der obere Abschnitt der Rohrreihen aus den Rohren (7, 8) und die oberen Sammelleitungen (14, 16) einen schlagartigen seitlichen Versatz beim Absenken der Rohrreihen erhalten, wenn die Zylinderkolbenaggregate (24) entlastet werden, kann über die Länge der Rohrreihen aus den Rohren (7, 8) eine oder mehrere Vorrichtungen vorgesehen werden, wie sie in Fig. 6 und 7 dargestellt ist bzw. sind. Hierzu weisen die Flossen (49) der Rohre (17) (vgl. auch Fig. 2), die die Wand (5a) auskleiden, eine über die Länge der Rohre (7, 8) durchgehende Rippe oder Flosse (50) auf. (In Fig. 6 ist nur eine Rippe oder Flosse 50 für eine Rohrreihe dargestellt. Jeder Rohrreihe ist eine solche Rippe oder Flosse zugeordnet.) Gegenüber dieser Rippe oder Flosse trägt das der Rohrwand (5a) benachbarte Rohr (7, 8) ebenfalls eine über die Länge dieses Rohres durchgehende Rippe oder eine Flosse (51). Die Rippe oder Flosse (50) umfaßt mit ihren Rändern (50a, 50b) den Rand (51a) der Rippe oder Flosse (51), wobei diese Ränder gleitend aneinanderliegen. Die Rippe oder Flosse (51) trägt an ihrem Rand (51a) in gleichmäßigen Längsabständen nockenförmige Vorsprünge (52), die die Keilflächen (53) besitzen. Der Rand (50c) der Rippe oder Flosse (50) trägt in gleichem Abstand wie die Vorsprünge (52) Ansätze (54) mit Keilflächen (55), an denen die schrägen Keilflächen (53) des nockenförmigen Vorsprungs (52) abgleiten, wenn die Rohrreihe aus den Rohren (7, 8) mit der Sammelleitung (14, 16) in Richtung des Pfeiles K (Fig. 6) gehoben oder abgesenkt wird. Durch die Ansätze (52) und die Vorsprünge (54) werden die Rohre (7, 8) schlagartig parallel zu sich selbst in Richtung der Pfeile L seitlich versetzt.So that not only the upper section of the rows of tubes from the tubes (7, 8) and the upper manifolds (14, 16) receive a sudden lateral offset when lowering the rows of tubes when the cylinder piston units (24) are relieved, can be the length of the rows of tubes one or more devices can be provided from the tubes (7, 8), as is or are shown in FIGS. 6 and 7. For this purpose, the fins (49) of the tubes (17) (cf. also FIG. 2) which line the wall (5a) have a fin or fin (50) which is continuous over the length of the tubes (7, 8). (Only one fin or fin 50 for a row of tubes is shown in FIG. 6. Such a fin or fin is associated with each row of tubes.) The tube (7, 8) adjacent to the tube wall (5a) also carries one opposite this fin or fin the length of this tube continuous rib or fin (51). With its edges (50a, 50b), the rib or fin (50) encompasses the edge (51a) of the rib or fin (51), these edges slidingly abutting one another. The rib or fin (51) has cam-shaped projections (52) on its edge (51a), which have the wedge surfaces (53). The edge (50c) of the rib or fin (50) carries at the same distance as the projections (52) lugs (54) with wedge surfaces (55) on which the oblique wedge surfaces (53) of the cam-shaped projection (52) slide when the Row of tubes from the tubes (7, 8) with the manifold (14, 16) in the direction of arrow K (Fig. 6) is raised or lowered. Through the lugs (52) and the projections (54), the tubes (7, 8) are suddenly laterally offset parallel to themselves in the direction of the arrows L.

Die der Rohrwand (5a) gegenüberliegende Rohrwand (5b) (vgl. Fig. 2) ist mit dem dieser Wand benachbarten Rohr (7, 8) entsprechend ausgebildet.The tube wall (5b) opposite the tube wall (5a) (cf. FIG. 2) is designed accordingly with the tube (7, 8) adjacent to this wall.

Claims (7)

1. Device for cleaning the inside and outside wall of standing or hanging heat exchanger pipes, in particular of pipes used in rubbish incinerators in which the pipes are arranged in rows of pipes and open into upper collecting pipes, which are raised at their ends and are accelerated when lowered by the force of gravity, whereby the pipes maintain kinetic energy in a longitudinal direction and subsequently are abruptly arrested, characterised in that the upper collecting pipes (14, 16) are raised at their ends (14a, 16a) by means of pneumatic or hydraulic-cylinder and piston arrangements connected control ably to each other and are accelerated when lowered by the force of gravity, in that below the ends of the pipe (14a, 16a) and/or the pipe socket (19) of the collecting pipes (14, 16) a stationary, support forming yoke (36) is arranged, which forms a domed dish corresponding to the end of the pipe (14a, 16a) or the pipe socket (19) of the collecting pipe (14, 16) and in that of the adjacent pipes (7, 8) of the rows of pipes extending parallel to each other which are connected together by means of flange or fins, one of the two outer pipes of a row of pipes is provided with a device (50 - 55) which can be displaced sideways on the level of the row of pipes.
2. Device according to Claim 1, characterised in that the horizontal collecting pipes (14, 16) are provided with a socket on their ends (14a, 16a) extending out of the heat exchanger, onto which the connecting medium (20 - 22) between the cylinder piston rod (23) of the arrangement (24) and the pipe end (14a, 16a) of the collecting pipe (14,16) engages.
3. Device according to Claim 1 and 2, characterised in that the dish of the yoke (36) consists of two concave shaped wedges (38, 39) arranged symmetrically to the perpendicular median plane of the yoke.
4. Device according to Claim 3, characterised in that one of the two wedges (38, 39) is staggered in height relative to the second wedge,
5. Device according to Claim 1 and any one of the Claims 2 to 4, characterised in that the connecting means (20 - 22) between the hydraulic piston (23) and the pipe end (14a, 16a) or the pipe socket (19) of the collecting pipe (14, 16) has a swivel pin located parallel to the axle direction of the yoke.
6. Device according to Claim 1,
characterised in that the means of adjustment consists of at least one inclined plane arranged perpendicular to one of the two outer pipes of the row of pipes and on the neighbouring wall (5a) of the heat exchanger and on this vertically descending opposite surface.
7. Device according to claim 6, characterised in that the two outer pipes (7, 8) of the row of pipes and the neighbouring exchanger wall (5a) of the heat exchanger are provided with longitudinal fins (50, 51) which extend towards each other and the longitudinal fins (50) of the exchanger wall have inclined planes (52) and the neighbouring pipe.
EP87109148A 1986-06-30 1987-06-25 Apparatus for cleaning the inner or outer walls of standing or hanging heat exchanger tubes Expired EP0251213B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3621850 1986-06-30
DE19863621850 DE3621850A1 (en) 1986-06-30 1986-06-30 Method and device for cleaning the inner or outer wall of standing or hanging tubes of heat exchangers
DE19863632982 DE3632982A1 (en) 1986-06-30 1986-09-29 DEVICE FOR CLEANING THE INTERNAL AND EXTERNAL WALL OF STANDING OR HANGING TUBES
DE3632982 1986-09-29

Publications (2)

Publication Number Publication Date
EP0251213A1 EP0251213A1 (en) 1988-01-07
EP0251213B1 true EP0251213B1 (en) 1989-10-04

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Application Number Title Priority Date Filing Date
EP87109148A Expired EP0251213B1 (en) 1986-06-30 1987-06-25 Apparatus for cleaning the inner or outer walls of standing or hanging heat exchanger tubes

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US (2) US4831969A (en)
EP (1) EP0251213B1 (en)
JP (1) JPH071158B2 (en)
DE (2) DE3632982A1 (en)
GE (1) GEP19981166B (en)
RU (1) RU1814722C (en)
UA (1) UA13033A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241179A1 (en) * 1992-12-08 1994-06-09 Gutehoffnungshuette Man Finned tube wall for heat exchanger - has side support tubes welded to tube walls
DE4302109A1 (en) * 1993-01-27 1994-07-28 Gutehoffnungshuette Man Heat exchanger tube wall cleaning equipment
DE102008022849A1 (en) 2008-05-08 2009-11-12 Ivankovic, Josip Debris e.g. smoke gas, removing method for use in wall, involves subordinating installation area or installation part with resonance oscillations that enforce installation area or installation part

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4121815C2 (en) * 1991-07-02 1993-11-11 Schmidt Sche Heissdampf Heat exchanger
DE19544225A1 (en) * 1995-11-28 1997-06-05 Asea Brown Boveri Cleaning the water-steam cycle in a positive flow generator
US7093649B2 (en) * 2004-02-10 2006-08-22 Peter Dawson Flat heat exchanger plate and bulk material heat exchanger using the same
US8002902B2 (en) * 2008-05-15 2011-08-23 Krowech Robert J Boiler cleaning apparatus and method
GB0902221D0 (en) * 2009-02-11 2009-03-25 Edwards Ltd Pilot
US10605450B2 (en) * 2014-10-24 2020-03-31 Hrst, Inc. Tube spreading device and boiler cleaning system
RU2708181C1 (en) 2016-05-03 2019-12-04 Кэрриер Корпорейшн Heat exchanger installation
USD876189S1 (en) 2017-12-11 2020-02-25 Precision Iceblast Corporation Deep cleaning alignment tool
US11313632B2 (en) * 2017-12-11 2022-04-26 Precision Iceblast Corporation Deep cleaning alignment equipment
CN111069103A (en) * 2019-12-11 2020-04-28 周静纯 Mould hole rotation type descaling machine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1501646A (en) * 1922-02-01 1924-07-15 Griscom Russell Co Evaporator coil
CH154299A (en) * 1931-03-12 1932-04-30 Sulzer Ag Device for cleaning the tubes of heat exchangers such as evaporators and superheaters.
GB732104A (en) * 1950-12-29 1955-06-22 Svenska Maskinverken Ab Improvements relating to the cleaning of heat-exchanger tubes
FR1373827A (en) * 1963-08-22 1964-10-02 V Teplotekhnitcheski Nii E E D Device for cleaning tubular heating surfaces
GB1099742A (en) * 1966-01-28 1968-01-17 V Teplotekhnichesky I Im F E D A device for vibrational cleaning of tubular heating surfaces in heat-exchange plants from external contamination mainly of slag and ash
AT308405B (en) * 1970-07-21 1973-07-10 Babcock & Wilcox Ag Waste heat boilers through which exhaust gases with a high dust content flow, especially for roasting ovens
US4018267A (en) * 1975-01-10 1977-04-19 Dorr-Oliver Incorporated Cleaning heat exchanger tubes
US3971343A (en) * 1975-03-31 1976-07-27 Deutsche Babcock & Wilcox Aktiengesellschaft Devices for the cleaning of heating surfaces
US3991343A (en) * 1976-01-07 1976-11-09 Henry Delpy Control circuit for progressively varying illumination intensity of lamps
DE3121947C2 (en) * 1981-06-03 1983-05-19 Vereinigte Kesselwerke AG, 4000 Düsseldorf Vibrating device and arrangement of the vibrating device on a heat exchanger
US4497282A (en) * 1983-11-23 1985-02-05 Neundorfer, Inc. Apparatus for deslagging steam generator tubes
GB2152204B (en) * 1983-12-30 1988-02-24 Smidth & Co As F L Heat exchanger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241179A1 (en) * 1992-12-08 1994-06-09 Gutehoffnungshuette Man Finned tube wall for heat exchanger - has side support tubes welded to tube walls
DE4241179C2 (en) * 1992-12-08 1999-05-06 Gutehoffnungshuette Man Fin tube walls of heat exchangers
DE4302109A1 (en) * 1993-01-27 1994-07-28 Gutehoffnungshuette Man Heat exchanger tube wall cleaning equipment
DE4302109C2 (en) * 1993-01-27 1999-01-07 Gutehoffnungshuette Man Heat exchanger with flue gas flow around the pipe walls and associated cleaning device and method for cleaning the pipe walls
DE102008022849A1 (en) 2008-05-08 2009-11-12 Ivankovic, Josip Debris e.g. smoke gas, removing method for use in wall, involves subordinating installation area or installation part with resonance oscillations that enforce installation area or installation part

Also Published As

Publication number Publication date
RU1814722C (en) 1993-05-07
DE3632982A1 (en) 1988-03-31
US4831969A (en) 1989-05-23
JPH071158B2 (en) 1995-01-11
JPS6341797A (en) 1988-02-23
US4840145A (en) 1989-06-20
GEP19981166B (en) 1998-09-25
EP0251213A1 (en) 1988-01-07
DE3760695D1 (en) 1989-11-09
UA13033A (en) 1997-02-28

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