EP0185902B1 - Pipe socket within an opening of a plate - Google Patents

Pipe socket within an opening of a plate Download PDF

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Publication number
EP0185902B1
EP0185902B1 EP85114278A EP85114278A EP0185902B1 EP 0185902 B1 EP0185902 B1 EP 0185902B1 EP 85114278 A EP85114278 A EP 85114278A EP 85114278 A EP85114278 A EP 85114278A EP 0185902 B1 EP0185902 B1 EP 0185902B1
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EP
European Patent Office
Prior art keywords
tube
weld
build
protection element
support plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85114278A
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German (de)
French (fr)
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EP0185902A1 (en
Inventor
Günter Dr.-Ing. Keintzel
Arno Czimczik
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.)
Hitachi Zosen Inova Steinmueller GmbH
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L&C Steinmueller GmbH
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Publication date
Application filed by L&C Steinmueller GmbH filed Critical L&C Steinmueller GmbH
Priority to AT85114278T priority Critical patent/ATE28931T1/en
Publication of EP0185902A1 publication Critical patent/EP0185902A1/en
Application granted granted Critical
Publication of EP0185902B1 publication Critical patent/EP0185902B1/en
Expired legal-status Critical Current

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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
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/40—Shell enclosed conduit assembly
    • Y10S165/401—Shell enclosed conduit assembly including tube support or shell-side flow director
    • Y10S165/416—Extending transverse of shell, e.g. fin, baffle

Definitions

  • the invention relates to a tube holder in an opening of a plate, in particular a heat exchanger tube in a support plate of a high-temperature heat exchanger, in which the tube is mounted in the opening with the interposition of at least one sleeve-like wear protection element and is secured in this position by welding.
  • Such a pipe holder is known from DE-A-30 01 756, in which the sleeve-like wear protection element is designed as a closed sleeve.
  • the closed sleeve is secured at its two ends protruding from the plate by a fillet-shaped weld. After the tube has been pushed through the wear protection sleeve, the tube is secured by a fillet weld joining the two workpieces.
  • the connection welding between the tube and the sleeve is not only difficult to check when assembling the tube holder, but also during repeat tests.
  • a pipe holder for cross-flow pipes which are guided into the openings of at least one support plate by means of a bushing with play, whereby a material is provided for the bushing, which welds it to the support plate higher temperatures difficult.
  • the connection of the bushing to the tube takes place here with the aid of a conical sleeve, which can be in one or more parts.
  • the object of the invention is to provide a tube holder of the type mentioned in the preamble of the claim, which ensures a secure and verifiable connection between the sleeve and the tube, which can also be used at high temperature.
  • At least one build-up weld is provided on the tube, which is in non-positive and, or positive engagement with the inner surface of the at least two-part wear protection element.
  • the build-up welding applied to the pipe is particularly easy to test. In comparison to the verifiability of joint welds, especially fillet welds, considerably more favorable conditions can be expected for the verifiability (also with recurring tests) of the surfacing welds. This means that the requirements of a nuclear quality assurance process (e.g. in the manufacture of primary circuit components) with regard to reproducibility and documentation of the manufacturing and process data can be easily met.
  • the build-up weld is preferably an annular build-up weld.
  • a ring build-up weld can be made with a mechanized orbital welding machine. However, it is also possible to apply sector-like build-up welding only in the area of certain circumferential angles instead of a ring-shaped build-up weld.
  • the weld can also be applied spirally. It is also conceivable to apply build-up welds in the longitudinal direction of the pipe. It is only important that the build-up weld is applied to the tube and can be in a non-positive and / or positive engagement with the inner surface of the wear protection element.
  • a protective coating is to be provided as protection against fretting, this can be applied to the wear protection element (s) independently of the pipes in a separate operation. A complex direct pipe coating and thus also the arrangement of the friction point directly on the pipe wall can thus be avoided.
  • the outer surface of the build-up weld can be non-positively against the inner surface of the two parts of the wear protection element.
  • the two parts of the wear protection element may be provided on the inner surface with ribs running in the circumferential direction of the tube, against which the build-up weld rests. In this case there is a non-positive and positive engagement.
  • the two parts of the wear protection element may be provided with a groove running in the circumferential direction of the tube, which lies in a form-fitting manner on the build-up weld.
  • Fig. 3 is a non-positive and positive connection of a tube with a sleeve arrangement acting as a wear protection element as a floating bearing (guide point with play) in a support plate and
  • Fig. 4 is a non-positive and positive connection of a tube with a sleeve arrangement acting as a wear protection element with a fixed point.
  • the tube holder consists of a stationary tube holder designed as a support plate 1 as a floating bearing with an opening 2 through which a tube 3 is passed.
  • the opening 2 in the support plate 1 is larger than the outer diameter of the tube 3.
  • a wear protection element consisting of two shell parts 4 and 5 is arranged.
  • the parts 4 and 5 are welded to the support plate 1 and enclose the tube 3 almost completely at a short distance.
  • an annular build-up weld 6 which is particularly characterized by its easy testability.
  • This ring-shaped build-up welding 6, which can be produced in a simple manner with the aid of a mechanized orbital welding device, and by the connection welding of the shell parts 4 and 5 to the support plate 1 results in a non-positive holding of the tube 3 in the support plate 1 achieved, which also high thermal loads, d. H. Withstands temperatures well above 700 ° C.
  • the connection of the shell parts 4 and 5 with the support plate 1 can take place by means of a form-fitting fit and / or by annular section welds 7.
  • a particular advantage of this storage of the tube 3 in the shell parts 4 and 5 and the support plate 1 by the annular build-up weld 6 between the shell parts 4, 5 and the tube 3 is that the build-up welding as a wearing part all loads caused by temperature effects, in particular also from very high temperatures, caused or occur, recorded and kept away from the pipe wall or compensated for by the permissible axial play and compensated so that there is certainly no undue stress or frictional stress on the pipe wall by the bracket at these points comes in the support plate 1.
  • the two-part half-shell design of the wear protection element also contributes very advantageously to the tension compensation in the region of the holder of the tube 3 of the support plate 1.
  • the wear protection element which is arranged between a tube 8 and a support plate 9, also consists of two shell-shaped parts 10 and 11.
  • these shell-shaped parts 10 and 11 have on the inside extending in the circumferential direction of the tube 8 Ribs 12 and 13, which rest on the outer wall of the tube 8.
  • the form-fitting connection of the tube 8 to the support plate 9 via the half-shell parts 10 and 11 serves as a fixed point and is likewise carried out very advantageously by means of a ring-shaped deposition weld 14 resting on the ribs 12 and 13 and on the inside of the shell parts, and connecting section welding 15, 16.
  • the arrangement of the ribs 12, 13 on the inside of the shell parts 10 and 11 creates a larger contact surface for the tube 8, which contributes to a particularly stable fixed-point mounting of the tube 8, without the positive connection of the tube 8 to the shell parts 10 To affect 11. An axial movement play for the tube 8 in the support plate 9 is prevented.
  • the wear protection element which is arranged between the tube 3 or 8 can also consist of more than two shell parts.
  • a plurality of pipes, preferably running parallel to one another, can also be fastened in a pipe holder with openings corresponding to the number of pipes.
  • This consists of an inner one-piece slotted or multi-part conical wedge sleeve 20, 21 and an outer conical clamping bush 22, which are non-positively fixed by wedging on the tube by wedging.
  • the non-positive fixation is additionally secured by a form-fitting fastening in that the inner wedge sleeve 20, 21 has on the inside a recess or groove 23 running in the circumferential direction of the tube 18, which rests on the application weld 24 welded annularly on the outer wall of the tube.
  • Parts 20 and 21 the inner wedge sleeve are secured after the construction of the pipe holder with the clamping bush 22 at one end by a section weld, as shown on the left in FIGS. 3 and 4.
  • the positive fastening of the sleeve arrangement acting as a wearing part by means of a tubular annular build-up weld advantageously enables the use and fixation of similar sleeve arrangements acting as a wear protection element, both at lower operating temperatures (up to 700 ° C only non-positively, without build-up welding), as well as at high operating temperatures ( above 700 ° C by means of positive build-up welding). All loads that occur in the pipe holder, in particular friction stresses due to the permissible axial play of the floating bearing holder, are initially absorbed by the sleeve arrangement as a wearing part and therefore cannot act directly on the pipe wall.
  • connection of the tube to the support plate via the sleeve arrangement can be provided with an additional section welding 25.
  • the build-up welding can be revised before the parts of the wear protection element are applied to the pipe.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Supports For Pipes And Cables (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

A device for mounting a conduit in an opening of a plate, especially for mounting a heat-exchanger tube in a support plate of a high-temperature heat exchanger. The tube is mounted in the opening of the support plate via the interposition of at least one sleeve-like wear-protection element, with the positioning of the tube being secured by welding. To guarantee a reliable connection between the plate and the tube that can be tested and can also be utilized at high temperatures, at least one build-up weld is provided on the tube. This build-up weld is in frictional and/or positive engagement with the inner surface of the at least two-part wear-protection element.

Description

Die Erfindung betrifft eine Rohrhalterung in einer Öffnung einer Platte, insbesondere eines Wärmetauscherrohres in einer Stützplatte eines Hochtemperatur-Wärmetauschers, bei der das Rohr unter Zwischenschaltung von mindestens einem hülsenartigen Verschleißschutzelement in der Öffnung gelagert und in dieser Lage durch eine Schweißung gesichert ist.The invention relates to a tube holder in an opening of a plate, in particular a heat exchanger tube in a support plate of a high-temperature heat exchanger, in which the tube is mounted in the opening with the interposition of at least one sleeve-like wear protection element and is secured in this position by welding.

Aus der DE-A- 30 01 756 ist eine solche Rohrhalterung bekannt, bei der das hülsenartige Verschleißschutzelement als geschlossene Hülse ausgebildet ist. Die geschlossene Hülse ist an ihren beiden aus der Platte vorragenden Enden durch eine kehlförmige Verbindungsschweißung gesichert. Nach Durchschieben des Rohres durch die Verschleißschutzhülse wird das Rohr durch eine ebensolche die beiden Werkstücke zusammenfügende Kehlschweißung gesichert. Die Verbindungsschweißung zwischen Rohr und Hülse ist nicht nur beim Aufbau der Rohrhalterung schlecht prüfbar, sondern auch bei Wiederholungsprüfungen.Such a pipe holder is known from DE-A-30 01 756, in which the sleeve-like wear protection element is designed as a closed sleeve. The closed sleeve is secured at its two ends protruding from the plate by a fillet-shaped weld. After the tube has been pushed through the wear protection sleeve, the tube is secured by a fillet weld joining the two workpieces. The connection welding between the tube and the sleeve is not only difficult to check when assembling the tube holder, but also during repeat tests.

Ferner ist aus der DE-B 16 01 243 eine Rohrhalterung für quer angeströmte Rohre bekannt, die in die Öffnungen mindestens einer Stützplatte jeweils mittels einer Buchse mit Spiel geführt sind, wobei für die Buchse ein Werkstoff vorgesehen ist, der ihr Verschweißen an der Stützplatte bei höheren Temperaturen erschwert. Die Verbindung der Buchse mit dem Rohr erfolgt hierbei mit Hilfe einer konischen Hülse, die ein-oder mehrteilig sein kann. Bei der Montage dieser bekannten Rohrhalterung wird zunächst die Buchse auf das Rohr aufgeschoben, bevor es durch die Bohrung in der Stützplatte hindurchgeführt wird. Nachdem das Rohr in der Stützplatte in seine richtige Lage gebracht worden ist, wird die Buchse in die Bohrung der Stützplatte geschoben und darauf die Hülse eingeschlagen oder eingepreßt. Im Anschluß daran werden die Hülse und auch die Buchse durch eine Schweißung miteinander verbunden und durch zusätzlichen Auftrag von Schweißmaterial als Ganzes in der Stützplatte gegen ein Herausschieben gesichert.Furthermore, from DE-B 16 01 243 a pipe holder for cross-flow pipes is known, which are guided into the openings of at least one support plate by means of a bushing with play, whereby a material is provided for the bushing, which welds it to the support plate higher temperatures difficult. The connection of the bushing to the tube takes place here with the aid of a conical sleeve, which can be in one or more parts. When installing this known pipe holder, the bush is first pushed onto the pipe before it is passed through the hole in the support plate. After the tube has been brought into the correct position in the support plate, the bush is pushed into the bore of the support plate and the sleeve is then hammered in or pressed in. Following this, the sleeve and also the bushing are connected to one another by welding and secured as a whole in the support plate against being pushed out by additional application of welding material.

Bei diesen bekannten Rohrbefestigungen handelt es sich um Verbindungen der Rohre mit der Rohrplatte, die entweder nicht in ausreichender Weise prüfbar sind oder als rein kraftschlüssige Verbindungen nur bis zu einer Temperatur von etwa 700° C eingesetzt werden können, da bei höheren Temperaturen die Rohrbefestigung mit Hilfe von Spannelementen infolge des temperaturbedingten Spannungsabbaus leicht aufgehoben wird und daher versagt.These known pipe fastenings are connections between the pipes and the pipe plate, which either cannot be adequately tested or can only be used as purely frictional connections up to a temperature of around 700 ° C, since at higher temperatures the pipe fastening can be done with the help of tensioning elements is easily canceled due to the temperature-related stress reduction and therefore fails.

Die Aufgabe der Erfindung besteht darin, eine Rohrhalterung der im Oberbegriff des Anspruches genannten Art bereitzustellen, welche eine sichere und überprüfbare Verbindung zwischen Hülse und Rohr gewährleistet, die auch bei hoher Temperatur eingesetzt werden kann.The object of the invention is to provide a tube holder of the type mentioned in the preamble of the claim, which ensures a secure and verifiable connection between the sleeve and the tube, which can also be used at high temperature.

Diese Aufgabe wird dadurch gelöst, daß mindestens eine Auftragsschweiße auf dem Rohr vorgesehen ist, die im kraftschlüssigen und, oder formschlüssigen Eingriff mit der Innenfläche des mindestens zweiteilig ausgebildeten Verschleißschutzelementes steht. Die auf dem Rohr aufgetragene Auftragsschweiße zeichnet sich besonders durch eine leichte Prüfbarkeit aus. Im Vergleich zur Prüfbarkeit von Verbindungsschweißungen, insbesondere Kehlschweißungen, sind für die Prüfbarkeit (auch bei wiederkehrenden Prüfungen) der Auftragsschweißungen erheblich günstigere Bedingungen zu erwarten. Somit können die Anforderungen eines nuklearen Qualitätssicherungsverfahrens (z. B. bei der Herstellung von Primärkreiskomponenten) hinsichtlich Reproduzierbarkeit und Dokumentation der Herstell- und Verfahrensdaten problemlos erfüllt werden.This object is achieved in that at least one build-up weld is provided on the tube, which is in non-positive and, or positive engagement with the inner surface of the at least two-part wear protection element. The build-up welding applied to the pipe is particularly easy to test. In comparison to the verifiability of joint welds, especially fillet welds, considerably more favorable conditions can be expected for the verifiability (also with recurring tests) of the surfacing welds. This means that the requirements of a nuclear quality assurance process (e.g. in the manufacture of primary circuit components) with regard to reproducibility and documentation of the manufacturing and process data can be easily met.

Vorzugsweise ist die Auftragsschweiße eine ringförmige Auftragsschweiße. Eine ringförmige Auftragsschweiße kann mit einem mechanisierten Orbital-Schweißgerät hergestellt werden. Es ist jedoch auch möglich, anstelle einer ringförmig geschlossenen Auftragsschweiße nur im Bereich bestimmter Umfangswinkel sektorartige Auftragsschweißen aufzubringen. Die Schweißung kann auch spiralförmig aufgebracht werden. Es ist auch denkbar, in Längserstreckungsrichtung des Rohres Auftragsschweißungen aufzubringen. Es kommt nur darauf an, daß die Auftragsschweiße auf dem Rohr aufgebracht ist und in einem kraft-und/oder formschlüssigen Eingriff mit der Innenfläche des Verschleißschutzelementes stehen kann.The build-up weld is preferably an annular build-up weld. A ring build-up weld can be made with a mechanized orbital welding machine. However, it is also possible to apply sector-like build-up welding only in the area of certain circumferential angles instead of a ring-shaped build-up weld. The weld can also be applied spirally. It is also conceivable to apply build-up welds in the longitudinal direction of the pipe. It is only important that the build-up weld is applied to the tube and can be in a non-positive and / or positive engagement with the inner surface of the wear protection element.

Falls zur Absicherung gegen Reibverschleiß eine Schutzbeschichtung vorzusehen ist, kann diese unabhängig von den Rohren in einem getrennten Arbeitsgang auf das oder die Verschleißschutzelemente aufgebracht werden. Eine aufwendige direkte Rohrbeschichtung und damit auch die Anordnung der Reibstelle unmittelbar auf der Rohrwandung können damit vermieden werden.If a protective coating is to be provided as protection against fretting, this can be applied to the wear protection element (s) independently of the pipes in a separate operation. A complex direct pipe coating and thus also the arrangement of the friction point directly on the pipe wall can thus be avoided.

Bei einer einfachen Ausbildung der Rohrhalterung kann die Außenfläche der Auftragsschweiße an der Innenfläche der beiden Teile des Verschleißschutzelementes kraftschlüssig anliegen.With a simple construction of the pipe holder, the outer surface of the build-up weld can be non-positively against the inner surface of the two parts of the wear protection element.

Es kann in einigen Anwendungsfällen jedoch zweckmäßig sein, daß die beiden Teile des Verschleißschutzelementes auf der Innenfläche mit in Umfangsrichtung des Rohres verlaufenden Rippen versehen sind, an denen die Auftragsschweiße anliegt. In diesem Falle ist ein kraft- und formschlüssiger Eingriff gegeben.In some applications, however, it may be appropriate for the two parts of the wear protection element to be provided on the inner surface with ribs running in the circumferential direction of the tube, against which the build-up weld rests. In this case there is a non-positive and positive engagement.

In anderen Fällen kann es zweckmäßig sein, daß die beiden Teile des Verschleißschutzelementes mit einer in Umfangsrichtung des Rohres verlaufenden Nut versehen sind, die formschlüssig auf der Auftragsschweiße aufliegt.In other cases, it may be appropriate for the two parts of the wear protection element to be provided with a groove running in the circumferential direction of the tube, which lies in a form-fitting manner on the build-up weld.

Schließlich ist es möglich, daß die beiden Teile des Verschleißschutzelementes zum Aufbau einer Keilhülse konisch ausgebildet sind und von einer äußeren Spannbuchse umgeben sind.Finally, it is possible that the two parts of the wear protection element for the construction of a wedge sleeve are conical and are surrounded by an outer clamping bush.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Erläuterung von in den Zeichnungen schematisch dargestellten Ausführungsformen der erfindungsgemäßen Rohrhalterung. Es zeigenFurther details, features and advantages of the invention result from the following explanation of embodiments of the pipe holder according to the invention which are shown schematically in the drawings. Show it

Fig. 1 eine kraftschlüssige Verbindung eines Rohres mit einer Stützplatte und zwei dazwischenliegenden Schalenteilen als Loslager im Teillängsschnitt gemäß einer ersten Ausführungsform,1 is a positive connection of a tube with a support plate and two intermediate shell parts as a floating bearing in the partial longitudinal section according to a first embodiment,

Fig. 2 eine kraft- und formschlüssige Verbindung eines Rohres mit Stützplatte und zwei dazwischenliegenden mit Rippen versehenen Schalenteilen als Festpunkt,2 is a non-positive and positive connection of a tube with a support plate and two intermediate shell parts provided with ribs as a fixed point,

Fig. 3 eine kraft- und formschlüssige Verbindung eines Rohres mit einer als Verschleißschutzelement wirkenden Hülsenanordnung als Loslager (Führungspunkt mit Spiel) in einer Stützplatte undFig. 3 is a non-positive and positive connection of a tube with a sleeve arrangement acting as a wear protection element as a floating bearing (guide point with play) in a support plate and

Fig. 4 eine kraft- und formschlüssige Verbindung eines Rohres mit einer als Verschleißschutzelement wirkenden Hülsenanordnung mit Festpunkt.Fig. 4 is a non-positive and positive connection of a tube with a sleeve arrangement acting as a wear protection element with a fixed point.

Wie aus Fig. 1 ersichtich, besteht die Rohrhalterung aus einer stationär angeordneten, als Stützplatte 1 ausgebildeten Rohrhalterung als Loslager mit einer Öffnung 2, durch die ein Rohr 3 hindurchgeführt ist. Die Öffnung 2 in der Stützplatte 1 ist größer ausgebildet als der Außendurchmesser des Rohres 3. Zwischen der Öffnung 2 in der Stützplatte 1 und dem Rohr 3 ist ein aus zwei Schalenteilen 4 und 5 bestehendes Verschleißschutzelement angeordnet. Die Teile 4 und 5 sind an der Stützplatte 1 angeschweißt und umschließen das Rohr 3 mit geringem Abstand nahezu vollständig. Zwischen den Schalenteilen 4 und 5 befindet sich eine ringförmige Auftragsschweiße 6, die sich besonders durch ihre leichte Prüfbarkeit auszeichnet. Durch diese ringförmige Auftragsschweiße 6, die in einfacher Weise mit Hilfe eines mechanisierten Orbital-Schweißgerätes hergestellt werden kann, und durch die Verbindungs-Verschweiße der Schalenteile 4 und 5 mit der Stützplatte 1 wird in sehr vorteilhafter Weise eine kraftschlüssige Halterung des Rohres 3 in der Stützplatte 1 erreicht, die auch hohen thermischen Belastungen, d. h. Temperaturen weit über 700° C, standhält. Die Verbindung der Schalenteile 4 und 5 mit der Stützplatte 1 kann durch einen formschlüssigen Paßsitz und/oder durch ringförmige Streckenschweißungen 7 erfolgen. Ein besonderer Vorteil dieser Lagerung des Rohres 3 in den Schalenteilen 4 und 5 und der Stützplatte 1 durch die ringförmige Auftragsschweiße 6 zwischen den Schalenteilen 4, 5 und dem Rohr 3 besteht darin, daß von der Auftragsschweiße als Verschleißteil alle Belastungen, die durch Temperatureinwirkungen, insbesondere auch von sehr hohen Temperaturen, hervorgerufen werden bzw. auftreten, aufgenommen und von der Rohrwand entfernt gehalten bzw. durch das zulässige axiale Bewegungsspiel kompensiert und so ausgeglichen werden, daß es an diesen Stellen mit Sicherheit zu keiner unzulässigen Belastung oder Reibbeanspruchung der Rohrwandung durch die Halterung in der Stützplatte 1 kommt. Auch die zweigeteilte halbschalige Ausbildung des Verschleißschutzelementes trägt sehr vorteilhaft zum Spannungsausgleich im Bereich der Halterung des Rohres 3 der Stützplatte 1 bei.As can be seen from Fig. 1, the tube holder consists of a stationary tube holder designed as a support plate 1 as a floating bearing with an opening 2 through which a tube 3 is passed. The opening 2 in the support plate 1 is larger than the outer diameter of the tube 3. Between the opening 2 in the support plate 1 and the tube 3, a wear protection element consisting of two shell parts 4 and 5 is arranged. The parts 4 and 5 are welded to the support plate 1 and enclose the tube 3 almost completely at a short distance. Between the shell parts 4 and 5 there is an annular build-up weld 6, which is particularly characterized by its easy testability. This ring-shaped build-up welding 6, which can be produced in a simple manner with the aid of a mechanized orbital welding device, and by the connection welding of the shell parts 4 and 5 to the support plate 1 results in a non-positive holding of the tube 3 in the support plate 1 achieved, which also high thermal loads, d. H. Withstands temperatures well above 700 ° C. The connection of the shell parts 4 and 5 with the support plate 1 can take place by means of a form-fitting fit and / or by annular section welds 7. A particular advantage of this storage of the tube 3 in the shell parts 4 and 5 and the support plate 1 by the annular build-up weld 6 between the shell parts 4, 5 and the tube 3 is that the build-up welding as a wearing part all loads caused by temperature effects, in particular also from very high temperatures, caused or occur, recorded and kept away from the pipe wall or compensated for by the permissible axial play and compensated so that there is certainly no undue stress or frictional stress on the pipe wall by the bracket at these points comes in the support plate 1. The two-part half-shell design of the wear protection element also contributes very advantageously to the tension compensation in the region of the holder of the tube 3 of the support plate 1.

Wie Fig. 2 zeigt, besteht das Verschleißschutzelement, das zwischen einem Rohr 8 und einer Stützplatte 9 angeordnet ist, ebenfalls aus zwei schalenförmig ausgebildeten Teilen 10 und 11. Diese schalenförmig ausgebildeten Teile 10 und 11 weisen jedoch auf ihrer Innenseite in Umfangsrichtung des Rohres 8 verlaufende Rippen 12 und 13 auf, die auf der Außenwandung des Rohres 8 aufliegen. Die formschlüssige Verbindung des Rohres 8 mit der Stützplatte 9 über die Halbschalenteile 10 und 11 dient als Festpunkt und erfolgt hierbei ebenfalls sehr vorteilhaft durch eine an den Rippen 12 und 13 und an den Innenseiten der Schalenteile anliegende ringförmige Auftragsschweiße 14 sowie verbindende Streckenschweißen 15, 16. Durch die Anordnung der Rippen 12, 13 auf der Innenseite der Schalenteile 10 und 11 wird eine größere Auflagefläche für das Rohr 8 geschaffen, die zu einer besonders stabilen Festpunkt-Lagerung des Rohres 8 beiträgt, ohne die formschlüssige Verbindung des Rohres 8 mit den Schalenteilen 10, 11 zu beeinträchtigen. Ein axiales Bewegungsspiel für das Rohr 8 in der Stützplatte 9 wird damit unterbunden.As shown in FIG. 2, the wear protection element, which is arranged between a tube 8 and a support plate 9, also consists of two shell-shaped parts 10 and 11. However, these shell-shaped parts 10 and 11 have on the inside extending in the circumferential direction of the tube 8 Ribs 12 and 13, which rest on the outer wall of the tube 8. The form-fitting connection of the tube 8 to the support plate 9 via the half-shell parts 10 and 11 serves as a fixed point and is likewise carried out very advantageously by means of a ring-shaped deposition weld 14 resting on the ribs 12 and 13 and on the inside of the shell parts, and connecting section welding 15, 16. The arrangement of the ribs 12, 13 on the inside of the shell parts 10 and 11 creates a larger contact surface for the tube 8, which contributes to a particularly stable fixed-point mounting of the tube 8, without the positive connection of the tube 8 to the shell parts 10 To affect 11. An axial movement play for the tube 8 in the support plate 9 is prevented.

Schließlich kann das Verschleißschutzelement, das zwischen dem Rohr 3 oder 8 angeordnet ist, auch aus mehr als zwei Schalenteilen bestehen. Auch kann die Befestigung mehrerer, vorzugsweise parallel zueinander verlaufender Rohre in einer Rohrhalterung mit der Rohranzahl entsprechend übereinstimmenden Öffnungen erfolgen.Finally, the wear protection element, which is arranged between the tube 3 or 8, can also consist of more than two shell parts. A plurality of pipes, preferably running parallel to one another, can also be fastened in a pipe holder with openings corresponding to the number of pipes.

Die Fig. 3 dargestellte Rohrhalterung, die für ein Rohr 18 als Loslager-Halterung in einer Stützplatte 19 wirkt, enthält zwischen der Stützplatte 19 und dem Rohr 18 eine ebenfalls als Verschleißschutzelement dienende Hülsenanordnung 20, 21, 22. Diese besteht aus einer inneren einteilig-geschlitzten oder mehrteiligen konischen Keilhülse 20, 21 und einer äußeren konischen Spannbuchse 22, die durch Ineinanderschieben auf dem Rohr kraftschlüssig durch Verkeilen fixiert sind. Die kraftschlüssige Fixierung wird zusätzlich durch eine formschlüssige Befestigung dadurch abgesichert, daß die innere Keilhülse 20, 21 auf der Innenseite eine in Umfangsrichtung des Rohres 18 verlaufende Ausdrehung bzw. Nut 23 aufweist, die fbrmschlüssig auf der an der Rohraußenwand ringförmig aufgeschweißten Auftragsschweiße 24 aufliegt. Die Teile 20 und 21 der inneren Keilhülse werden nach Aufbau der Rohrhalterung mit der Spannbuchse 22 an ihrem einen Ende durch eine Streckenschweißung gesichert, wie links in den Fig. 3 und 4 gezeigt. Die forschlüssige Befestigung der als Verschleißteil wirkenden Hülsenanordnung mittels einer rohrseitigen ringförmigen Auftragsschweiße ermöglicht in vorteilhafter Weise die Verwendung und Fixierung von gleichartigen als Verschleißschutzelement wirkenden Hülsenanordnungen, sowohl bei niedrigeren Einsatztemperaturen (bis 700°C nur kraftschlüssig, ohne Auftragsschweiße), als auch bei hohen Einsatztemperaturen (oberhalb 700°C mittels formschlüssiger Auftragsschweiße). Alle Belastungen, die in der Rohrhalterung auftreten, insbesondere Reibbeanspruchungen durch das zulässige axiale Spiel der Loslager-Halterung, werden zunächst von der Hülsenanordnung als Verschleißteil aufgenommen und können somit nicht direkt auf die Rohrwand einwirken.The pipe holder shown in FIG. 3, which acts for a pipe 18 as a floating bearing holder in a support plate 19, contains between the support plate 19 and the pipe 18 a sleeve arrangement 20, 21, 22 also serving as a wear protection element. This consists of an inner one-piece slotted or multi-part conical wedge sleeve 20, 21 and an outer conical clamping bush 22, which are non-positively fixed by wedging on the tube by wedging. The non-positive fixation is additionally secured by a form-fitting fastening in that the inner wedge sleeve 20, 21 has on the inside a recess or groove 23 running in the circumferential direction of the tube 18, which rests on the application weld 24 welded annularly on the outer wall of the tube. Parts 20 and 21 the inner wedge sleeve are secured after the construction of the pipe holder with the clamping bush 22 at one end by a section weld, as shown on the left in FIGS. 3 and 4. The positive fastening of the sleeve arrangement acting as a wearing part by means of a tubular annular build-up weld advantageously enables the use and fixation of similar sleeve arrangements acting as a wear protection element, both at lower operating temperatures (up to 700 ° C only non-positively, without build-up welding), as well as at high operating temperatures ( above 700 ° C by means of positive build-up welding). All loads that occur in the pipe holder, in particular friction stresses due to the permissible axial play of the floating bearing holder, are initially absorbed by the sleeve arrangement as a wearing part and therefore cannot act directly on the pipe wall.

Gemäß Fig. 4 kann die Verbindung des Rohres mit der Stützplatte über die Hülsenanordnung, wie auch in Fig. 3 gezeigt ist, mit einer zusätzlichen Streckenschweiße 25 versehen sein.According to FIG. 4, the connection of the tube to the support plate via the sleeve arrangement, as also shown in FIG. 3, can be provided with an additional section welding 25.

Vor Aufbringen der Teile des Verschleißschutzelementes auf das Rohr kann die Auftragsschweiße überarbeitet werden.The build-up welding can be revised before the parts of the wear protection element are applied to the pipe.

Claims (6)

1. A device for mounting a conduit in an opening (2) of a plate (1), especially a heat- exchanger tube in a support plate of a high- temperature heat exchanger, with which the tube (3) is supported in the opening under interposal of a at least a sleeve like wear-protection element and secured in this position by a weld characterized in that at least one build-up weld (6; 14; 24) is disposed on the tube (3; 8; 18), which weld is in force-locking and/or formlocking engagement with the inner surface of the wear-protection element (4, 5; 10; 20, 21, 22) being made-up by at least two-parts.
2. Device according to claim 1, characterized in that the build-up weld (6; 14; 24) is an annular build-up weld.
3. Device according to claim 1 or 2, characterized in that the outer surface of the build-up weld (6) rests in a force-locking manner against the inner surface of the two parts (4, 5) of the wear-protection element.
4. Device according to claim 1 or 2, characterized in that the two parts (10, 11) of the wear-protection element are provided on the inner surface with ribs (12, 13) extending in the circumferential direction of the tube, with the build-up weld (14) engaging the ribs.
5. Device according to claim 1 or 2, characterized in that the two parts (20, 21) of the wear-protection element are provided with a groove (23) extending in the circumferential direction of said tube, with the groove resting in a formlocking manner.
6. Device according to claim 5, characterized in that the two parts (20, 21) of the wear-protection element are provided with a tapered configuration to provide a wedge-type sleeve arrangement and are surrounded by an outer clamping sleeve (22).
EP85114278A 1984-12-22 1985-11-08 Pipe socket within an opening of a plate Expired EP0185902B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85114278T ATE28931T1 (en) 1984-12-22 1985-11-08 PIPE HOLDER IN AN OPENING OF A PLATE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3447264A DE3447264C2 (en) 1984-12-22 1984-12-22 Pipe holder in an opening in a plate
DE3447264 1984-12-22

Publications (2)

Publication Number Publication Date
EP0185902A1 EP0185902A1 (en) 1986-07-02
EP0185902B1 true EP0185902B1 (en) 1987-08-12

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ID=6253795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114278A Expired EP0185902B1 (en) 1984-12-22 1985-11-08 Pipe socket within an opening of a plate

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US (1) US4674567A (en)
EP (1) EP0185902B1 (en)
AT (1) ATE28931T1 (en)
DE (2) DE3447264C2 (en)

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DE3731987A1 (en) * 1987-09-23 1989-04-06 Steinmueller Gmbh L & C Pipe-securing means
ATA137288A (en) * 1988-05-25 1997-12-15 Roth Technik Austria COMPONENT, ESPECIALLY EXHAUST MANIFOLD FOR INTERNAL COMBUSTION ENGINES, AND METHOD FOR THE PRODUCTION THEREOF
US7431074B1 (en) * 2006-03-20 2008-10-07 Fellman Michael L Radiator structure
DE102011051866A1 (en) 2011-07-15 2013-01-17 Contitech Techno-Chemie Gmbh Solderless fixing of a pipeline
CN106764092B (en) * 2017-01-20 2019-05-03 合肥志功机电工程有限公司 Bus sealing to through the wall structure
CN113983241A (en) * 2021-11-10 2022-01-28 上海外高桥造船有限公司 Method of installing reinforced pipe using structural retainer and reinforced pipe assembly

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DE1601243B2 (en) * 1968-01-23 1971-11-18 Gebrüder Sulzer AG, Winterthur (Schweiz) Heat exchanger with pipes guided in a support plate
DE3001756A1 (en) * 1979-01-19 1980-07-24 Sterling Drug Inc CORROSION-RESISTANT JOINT ARRANGEMENT

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US2056920A (en) * 1935-07-17 1936-10-06 Gen Motors Corp Heat exchanger for refrigerating systems
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DE1601243B2 (en) * 1968-01-23 1971-11-18 Gebrüder Sulzer AG, Winterthur (Schweiz) Heat exchanger with pipes guided in a support plate
DE3001756A1 (en) * 1979-01-19 1980-07-24 Sterling Drug Inc CORROSION-RESISTANT JOINT ARRANGEMENT

Also Published As

Publication number Publication date
DE3447264C2 (en) 1986-11-06
DE3560468D1 (en) 1987-09-17
DE3447264A1 (en) 1986-07-03
ATE28931T1 (en) 1987-08-15
EP0185902A1 (en) 1986-07-02
US4674567A (en) 1987-06-23

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