EP0013039A1 - Device for lining the inner walls of industrial furnaces - Google Patents

Device for lining the inner walls of industrial furnaces Download PDF

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Publication number
EP0013039A1
EP0013039A1 EP79200724A EP79200724A EP0013039A1 EP 0013039 A1 EP0013039 A1 EP 0013039A1 EP 79200724 A EP79200724 A EP 79200724A EP 79200724 A EP79200724 A EP 79200724A EP 0013039 A1 EP0013039 A1 EP 0013039A1
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EP
European Patent Office
Prior art keywords
insulating
base plate
fastening
webs
mat
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Granted
Application number
EP79200724A
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German (de)
French (fr)
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EP0013039B1 (en
Inventor
Manfred Severin
Hans Dieter Dipl.-Ing. Marsch
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ThyssenKrupp Industrial Solutions AG
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Uhde GmbH
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Publication of EP0013039A1 publication Critical patent/EP0013039A1/en
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Publication of EP0013039B1 publication Critical patent/EP0013039B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/14—Supports for linings
    • F27D1/144—Supports for ceramic fibre materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • F27D1/0009—Comprising ceramic fibre elements
    • F27D1/0013—Comprising ceramic fibre elements the fibre elements being in the form of a folded blanket or a juxtaposition of folded blankets

Definitions

  • the invention relates to a device for lining the inner wall of industrial furnaces with a number of insulating blocks, each of which has a corrugated, possibly needled insulating mat made of high-temperature-resistant material, in particular ceramic fiber material, in the outer fold area of which supporting elements are arranged, which are also on the outside the fastening means provided for the separate fastening of each insulating block to the furnace wall can be connected.
  • the support elements are formed by support profiles embedded in at least two outer ends of the folds, each of which a web which is attached to the center of the latter extends through a corresponding opening in the insulation mat to the outside of the insulation block and there an opening passes through a fastening rail directed transversely to the fibers of the mat and can be connected to the latter by subsequent bending into the plane of the fastening rail.
  • the fastening rail itself can be inserted laterally into a C-shaped holding element which can be connected to the furnace wall, a fastening screw or the like being insertable through a fastening opening in the C-shaped holding element for connection to the furnace wall.
  • a further opening which can be aligned with the opening in the C-shaped holding element, is also formed in the fastening rail which can be pushed into the C-shaped holding element, which enables access to the fastening means passing through the opening in the C-shaped holding element after a corresponding opening has previously been drilled in the region of the insulating mat opposite these openings.
  • the object of the invention is to provide a solution by means of which individual insulation blocks which have become defective can be easily removed from the outside without interrupting the operation of the furnace and can be replaced by a new insulation block, and at the same time the individual insulation blocks are inherently stable and easy to handle.
  • each insulating block has on its outside a base plate with at least two mutually opposite sides, outward-facing webs, in such a way that adjacent insulating blocks by means of fastening screws passing through these webs in a cassette-like manner are connectable to each other, and that the base plate serves as a connecting element between the support elements for the folded insulating mat and the fastening means.
  • the base plate which connects the supporting elements for the insulating mat and the fastening means for fastening to the furnace wall, results in an excellent dimensional stability of each insulating block, both before and during assembly, and, above all, the fastening webs formed in one piece with the base plate Ensure a very safe and secure regular lining even when fully assembled.
  • fastening means are formed by hooks rotatably mounted in the base plate, which can be suspended in holding means provided on the furnace wall, in particular continuous holding rods.
  • damping or compensation element made of high-temperature-resistant material between base plate webs of adjacent insulating blocks lying opposite one another.
  • damping or compensating elements are simply inserted between the individual insulating blocks and are therefore not securely fixed, while due to the inventive design between the opposing base plate If there are adjacent insulating blocks, secure clamping and additional securing is ensured by the fastening screws in the relevant base plate webs which also penetrate the damping and compensating element in question.
  • each insulating mat it is advisable to hold each insulating mat together in the folded state with its assembly on the associated base plate to facilitate tapes, such tapes being made of non-heat-resistant material, since these can easily burn off when the oven is in use after assembly.
  • each insulating mat can be formed from several layers, which have a higher temperature resistance towards the inside of the furnace, in order to make the production cheaper in this way, since the cost of insulating material naturally increases in accordance with its temperature resistance.
  • a corrugated or meandering folded insulating mat 2 is formed from several layers of temperature-resistant, ceramic fiber material, the individual layers facing the furnace interior, i.e. 1 and 2, have higher temperature resistance graded downwards.
  • each insulating mat 2 is penetrated by two support rods 3, which are screwed to support straps 4 or fastened in another way, which in turn are connected to a base plate 5, preferably made of sheet steel, which is bent on two opposite sides, towards the outside has directed webs 6, in which fastening openings 7 are formed, which are provided for connecting adjacent insulating blocks by means of fastening screws passing through these openings.
  • suspension hooks 9 are rotatably mounted in the base plate 5. As shown in FIG. 2, these suspension hooks 9 are used for hooking or hanging on holding rods 10, which are suspended from U-shaped supports 11 of an oven ceiling, with releasable gratings 12 being arranged between the supports 11.
  • a row of insulating blocks 1 is arranged in an aisle between two rows of schematically indicated reaction tubes 13 and burners 14 arranged on the other side, in the suspended state shown in FIG. 2 the insulating blocks 1 each suspension hook 9 is assigned a locking piece 15 which is inserted between the folding web 6 and the support rod 10.
  • each insulating mat 2 is held together in the folded state to facilitate the assembly of paper tapes 16 which burn away when first started up.
  • an entire furnace ceiling is continuously covered with insulating blocks 1 a, which correspond to the above-described insulating blocks 1, with the exception that each base plate 5a is provided on all four sides with edged webs 6a in such a way that a continuous cassette ceiling is formed , in which in each case adjacent webs 6a are connected to one another by means of fastening screws passing through fastening openings.
  • the individual insulating blocks are square in plan, they are appropriately arranged in a checkerboard manner, ie the folds of the insulating mats of adjacent insulating blocks are each directed perpendicular to one another, as is already known in principle for insulating blocks of the type in question (DE-OS 22 31 658).
  • insulating blocks of the type described can also be used for lining Be walls are used.
  • honeycomb-shaped hexagons with a corresponding six edge webs or other regularly assembled polygon shapes can be used instead of square outline shapes.
  • other hanging elements such as hanging eyes or the like, can be provided on the furnace wall construction in question.
  • the insulating mat could also be attached to the base plate in a manner other than that described, for example by the known support profiles according to DE-OS 26 35 623 and the like inserted into individual outer fold ends of the insulating mat and the like. More.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung zur Innenwandauskleidung von Industrieöfen mit einer Anzahl von Isolierblöcken (1), von denen jeder eine wellenförmig gefaltete, ggf. vernadelte Isoliermatte (2) aus hochtemperaturfestem Material, insbesondere keramischem Fasermaterial, aufweist, in deren äußerem Faltenbereich Tragelemente (3) angeordnet sind, welche mit auf der Außenseite des Isolierblocks vorgesehenen Befestigungsmitteln (9) zur gesonderten Befestigung jedes Isolierblocks an der Ofenwandung (11, 12) verbindbar sind, wobei jeder Isolierblock (1) an seiner Außenserte eine Basisplatte (5) mit mindestens zwei an einander gegenüberliegenden Seiten befindlichen, nach auswärts gerichteten Stegen (6) aufweist, derart, daß benachbarte Isolierblöcke mittels diese Stege durchsetzender Befestigungsschrauben kassettenartig miteinander verbindbar sind, und wobei die Basisplatte (5) als Verbindungselement zwischen den Tragelementen (3) für die gefaltete Isoliermatte (2) und den Befestigungsmitteln (9) dient. Weitere Merkmale betreffen die nähere Ausgestaltung der Befestgungsmittel (9) mit zugeordneten Arretierungsmitteln (15) sowie der Isoliermatte (2) mit den Tragelementen (3).The invention relates to a device for lining the inner wall of industrial furnaces with a number of insulating blocks (1), each of which has a corrugated, possibly needled insulating mat (2) made of high-temperature-resistant material, in particular ceramic fiber material, in the outer fold area of which there are supporting elements (3). are arranged, which can be connected with fastening means (9) provided on the outside of the insulating block for separate fastening of each insulating block to the furnace wall (11, 12), each insulating block (1) having a base plate (5) on its outer side with at least two to one another on opposite sides, outward-facing webs (6), such that adjacent insulating blocks can be connected to one another in a cassette-like manner by means of fastening screws passing through these webs, and wherein the base plate (5) acts as a connecting element between the support elements (3) for the folded insulating mat (2) and the mounting bracket tteln (9) is used. Other features relate to the more detailed design of the fastening means (9) with associated locking means (15) and the insulating mat (2) with the support elements (3).

Description

Die Erfindung betrifft eine Vorrichtung zur Innenwandauskleidung von Industrieöfen mit einer Anzahl von.Isolierblöcken, von denen jeder eine wellenförmig gefaltete, ggf. vernadelte Isoliermatte aus hochtemperaturfestem Material, insbesondere keramischem Fasermaterial, aufweist, in deren äußerem Faltenbereich Tragelemente angeordnet sind, welche mit auf der Außenseite des Isolierblocks vorgesehenen Befestigungsmitteln zur gesonderten Befestigung jedes Isolierblocks an der Ofenwandung verbindbar sind.The invention relates to a device for lining the inner wall of industrial furnaces with a number of insulating blocks, each of which has a corrugated, possibly needled insulating mat made of high-temperature-resistant material, in particular ceramic fiber material, in the outer fold area of which supporting elements are arranged, which are also on the outside the fastening means provided for the separate fastening of each insulating block to the furnace wall can be connected.

Bei einer bekannten Vorrichtung dieser Art (DE-OS 26 35 623) sind die Tragelemente von in mindestens zwei äußere Faltenenden eingebetteten Tragprofilen gebildet, wobei sich jeweils ein an diesen mittig befestigter Steg durch eine entsprechende Öffnung in der Isoliermatte zur Außenseite des Isolierblocks erstreckt und dort eine öffnung in einer quer zu den Fasern der Matte gerichteten Befestigungsschiene durchsetzt und durch anschließendes Umbiegen in die Ebene der Befestigungsschiene mit dieser verbindbar ist. Die Befestigungsschiene selbst ist seitlich in ein mit der Ofenwandung verbindbares C-förmiges Halteelement einschiebbar, wobei durch eine Befestigungsöffnung in dem C-förmigen Halteelement eine Befestigungsschraube od. dgl. zur Verbindung mit der Ofenwandung einsetzbar ist. Ferner ist auch in der in das C-förmige Halteelement einschiebbaren Befestigungsschiene eine mit der Öffnung in dem C-förmigen Halteelement ausfluchtbare weitere öffnung ausgebildet, die den Zugang zu den die Öffnung in dem C-förmigen Halteelement durchsetzenden Befestigungsmitteln ermöglicht, nachdem vorher eine entsprechende Öffnung in dem diesen öffnungen gegenüberliegenden Bereich der Isoliermatte gebohrt worden ist. Aufgrund dieser Ausbildung ist es demnach beim Schadhaftwerden eines einzelnen Isolierblockes erforderlich, den Ofen stillzusetzen und abzukühlen, um dann vom Ofeninnenraum her die Befestigungsschrauben in der zuvor beschriebenen Weise durch die Isoliermatte hindurch lösen zu können, wobei man dann nach dem Entfernen eines Isolierblocks ggf. auch weitere Isolierblöcke durch seitliches Herausschieben der Befestigungsschienen aus den zugeordneten C-förmigen Halteelementen lösen und auswechseln kann.In a known device of this type (DE-OS 26 35 623), the support elements are formed by support profiles embedded in at least two outer ends of the folds, each of which a web which is attached to the center of the latter extends through a corresponding opening in the insulation mat to the outside of the insulation block and there an opening passes through a fastening rail directed transversely to the fibers of the mat and can be connected to the latter by subsequent bending into the plane of the fastening rail. The fastening rail itself can be inserted laterally into a C-shaped holding element which can be connected to the furnace wall, a fastening screw or the like being insertable through a fastening opening in the C-shaped holding element for connection to the furnace wall. Furthermore, a further opening, which can be aligned with the opening in the C-shaped holding element, is also formed in the fastening rail which can be pushed into the C-shaped holding element, which enables access to the fastening means passing through the opening in the C-shaped holding element after a corresponding opening has previously been drilled in the region of the insulating mat opposite these openings. Because of this design, if an individual insulation block becomes defective, it is necessary to shut down and cool the furnace in order to then be able to loosen the fastening screws from the interior of the furnace through the insulation mat in the manner described above, and then, if necessary, after removing an insulation block can detach and replace further insulating blocks by pushing the mounting rails out of the associated C-shaped holding elements.

Bei einer anderen bekannten Vorrichtung (DE-OS 22 31 658) sind eine Anzahl von Faserplatten jeweils durch alle Platten durchsetzende, an den Enden rechtwinklig abgebogene Tragstangen miteinander verbunden, wobei die Tragstangen mittels diese umgreifender U-förmiger Befestigungselemente an einem Block aus feuerfestem Material befestigt sind, in dem eine zentrische Bohrung ausgebildet ist, in die, ebenfalls von der Innenseite des Isolierblocks her, ein metallischer Befestigungsbolzen einsetzbar und an einem Ende mittels eines Lichtbogenschweißgerätes mit einer metallischen Ofenwandung verbindbar und anschließend das gegenüberliegende, mit Gewinde versehene Ende dieses Befestigungsbolzens mit dem Block aus feuerfestem Material mittels einer Beilagscheibe verbindbar ist. Auch diese bekannte Vorrichtung erfordert demnach beim Austausch eines einzelnen schadhaft gewordenen Isolierblocks eine Zugänglichkeit vom Ofeninnenraum her und dementsprechend ein vaheriges Stillsetzen und Abkühlen des ganzen Ofens.In another known device (DE-OS 22 31 658) a number of fiberboards are connected to each other through all plates penetrating, at the ends bent at right angles to support rods, the support rods being attached to a block of refractory material by means of these encompassing U-shaped fastening elements are, in which a central bore is formed, into which, also from the inside of the insulating block, a metallic fastening bolt can be inserted and connected at one end by means of an arc welding device to a metallic furnace wall and then the opposite, threaded end of this fastening ing bolt can be connected to the block of refractory material by means of a washer. Accordingly, this known device also requires accessibility from the interior of the furnace when replacing a single insulation block that has become defective, and accordingly requires the entire furnace to be stopped and cooled.

Aufgabe der Erfindung ist die Schaffung einer Lösung, mittels welcher einzelne schadhaft gewordene Isolierblöcke ohne Betriebsunterbrechung des Ofens von außen her leicht ausbaubar und durch einen neuen Isolierblock ersetzbar sind und gleichzeitig die einzelnen Isolierblocks in sich formbeständig und gut handhabbar sind.The object of the invention is to provide a solution by means of which individual insulation blocks which have become defective can be easily removed from the outside without interrupting the operation of the furnace and can be replaced by a new insulation block, and at the same time the individual insulation blocks are inherently stable and easy to handle.

Bei einer Vorrichtung der eingangs bezeichneten Art wird diese Aufgabe gemäß der Erfindung dadurch gelöst, daß jeder Isolierblock an seiner Außenseite eine Basisplatte mit mindestens zwei an einander gegenüberliegenden Seiten befindlichen, nach auswärts gerichteten Stegen aufweist, derart, daß benachbarte Isolierblöcke mittels diese Stege durchsetzender Befestigungsschrauben kassettenartig miteinander verbindbar sind, und daß die Basisplatte als Verbindungselement zwischen den Tragelementen für die gefaltete Isoliermatte und den Befestigungsmitteln dient.In a device of the type mentioned at the outset, this object is achieved according to the invention in that each insulating block has on its outside a base plate with at least two mutually opposite sides, outward-facing webs, in such a way that adjacent insulating blocks by means of fastening screws passing through these webs in a cassette-like manner are connectable to each other, and that the base plate serves as a connecting element between the support elements for the folded insulating mat and the fastening means.

Aufgrund dieser Ausbildung kann bei entsprechender Gestaltung der Ofenwandung, d.h. teilweiser Entfernbarkeit derselben derart, daß einzelne schadhaft gewordene Isolierblocks von außen zugänglich sind, jeder Isolierblock für sich nach dem Lösen der die Stege der Basisplatten benachbarter Isolierblocks mitdurchsetzenden Befestigungsschrauben nach außen herausgenommen und durch einen neuen lsolierblock ersetzt werden, ohne daß bei diesen Arbeiten der Ofen stillgesetzt zu werden braucht, da bei entsprechender Vorbereitung das Herausnehmen des schadhaften und Wiedereinsetzen des neuen Isolierblocks praktisch in wenigen Sekunden erfolgen kann. Hinzu kommt, daß sich durch die die Tragelemente für die Isoliermatte und die Befestigungsmittel zur Befestigung an der Ofenwandung miteinander verbindende Basisplatte insgesamt eine ausgezeichnete Formbeständigkeit eines jeden Isolierblocks, sowohl vor als auch bei der Montage, ergibt und die einstückig mit der Basisplatte ausgebildeten Befeetigungsstege vor allem auch im fertig montierten Zustand eine sehr sichere und eakt regelmäßige Auskleidung gewährleisten.Because of this design, with a suitable design of the furnace wall, ie partial removability of the same in such a way that individual insulation blocks which have become defective are accessible from the outside, each insulation block for itself after the loosening of the fastening screws penetrating the webs of the base plates of adjacent insulation blocks and removed to the outside and replaced by a new insulation block without the furnace being shut down during this work needs, because with appropriate preparation, the removal of the damaged and reinserting the new insulating block can be done in a matter of seconds. In addition, the base plate, which connects the supporting elements for the insulating mat and the fastening means for fastening to the furnace wall, results in an excellent dimensional stability of each insulating block, both before and during assembly, and, above all, the fastening webs formed in one piece with the base plate Ensure a very safe and secure regular lining even when fully assembled.

Eine besonders vorteilhafte Ausbildung ergibt sich dabei, wenn die Befestigungsmittel von in der Basisplatte drehbar gelagerten Haken gebildet sind, die in an der Ofenwandung vorgesehene Haltemittel, insbesondere durchlaufende Haltestangen, einhängbar sind.A particularly advantageous embodiment results if the fastening means are formed by hooks rotatably mounted in the base plate, which can be suspended in holding means provided on the furnace wall, in particular continuous holding rods.

Um hierbei zu verhindern, daß - etwa bei im Ofen auftretenden Verpuffungen - ein unbeabsichtigtes Lösen einzelner Isolierblocks auftritt, empfiehlt es sich, jedem Befestigungshaken ein Arretierungselement zuzuordnen, wobei sich eine besonders einfache Ausführung ergibt, wenn man ein solches Arretierungselement als ein zwischen Haltemittel und benachbartem Basisplattensteg einschiebbares Sperrstück ausbildet, das nach dem Einhängen des zugeordneten Befestigungshakens eingeschoben und vor dem Aushaken wieder entfernt wird.In order to prevent - in the event of deflagrations occurring in the furnace - unintentional loosening of individual Isolation blocks occurs, it is advisable to assign a locking element to each fastening hook, whereby a particularly simple design results if one forms such a locking element as a locking piece that can be inserted between the holding means and the adjacent base plate web, which is inserted after the associated fastening hook has been hooked in and before unhooking again Will get removed.

Weiterhin kann man als Tragelemente für die gefaltete Isoliermatte mindestens zwei alle Falten derselben durchsetzende, mit der Basisplatte verbindbare Tragstangen verwenden, derart, daß ein sicherer Halt.aller Falten der Isoliermatte gewährleistet und insbesondere verhindert ist, daß die Endfalten von den Tragstangen abfallen können, wie dies bei den einfach an den Enden umgebogenen Tragstangen der Isolierblocks gemäß DE-OS 22 31 658 vorkommen kann.Furthermore, one can use as support elements for the folded insulating mat at least two supporting rods which penetrate all folds of the same and can be connected to the base plate, in such a way that a secure hold.all folds of the insulating mat are ensured and in particular it is prevented that the end folds can fall off the supporting rods, such as this can occur with the support rods of the insulating blocks bent over at the ends according to DE-OS 22 31 658.

Ferner kann man zwischen gegeneinanderliegenden Basisplatten-Stegen benachbarter Isolierblöcke besonders einfach und sicher jeweils ein an sich bekanntes Dämpfungs- bzw. Ausgleichselement aus hochtemperaturfestem Material anordnen. Bei der bekannten Vorrichtung gemäß DE-OS 22 31 658 sind derartige Dämpfungs- bzw. Ausgleichselemente einfach zwischen den einzelnen Isolierblöcken eingesetzt und folglich nicht sicher festgelegt, während aufgrund der erfindungsgemäßen Ausbildung zwischen den gegeneinanderliegenden Basisplatten-Stegen benachbarter Isolierblöcke eine sichere Festklemmung und zusätzliche Sicherung durch die auch das betreffende Dämpfungs- und Ausgleichselement durchsetzenden Befestigungsschrauben in den betreffenden Basisplatten-Stegen gewährleistet ist.Furthermore, it is particularly easy and safe to arrange a damping or compensation element made of high-temperature-resistant material between base plate webs of adjacent insulating blocks lying opposite one another. In the known device according to DE-OS 22 31 658, such damping or compensating elements are simply inserted between the individual insulating blocks and are therefore not securely fixed, while due to the inventive design between the opposing base plate If there are adjacent insulating blocks, secure clamping and additional securing is ensured by the fastening screws in the relevant base plate webs which also penetrate the damping and compensating element in question.

Es empfiehlt sich, jede Isoliermatte im gefalteten Zustand mit deren Montage an der zugeordneten Basisplatte erleichternden Bändern zusammenzuhalten, wobei derartige Bänder aus nicht hitzebeständigem Material bestehen können, da diese nach beendeter Montage ohne weiteres beim Ofenbetrieb abbrennen können.It is advisable to hold each insulating mat together in the folded state with its assembly on the associated base plate to facilitate tapes, such tapes being made of non-heat-resistant material, since these can easily burn off when the oven is in use after assembly.

Schließlich kann man jede Isoliermatte aus mehreren Lagen bilden, die zum Ofeninneren hin abgestuft höhere Temperaturbeständigkeit aufweisen, um derart die Herstellung preiswerter zu machen, da naturgemäß die Kosten für Isoliermaterial entsprechend dessen Temperaturbeständigkeit ansteigen.Finally, each insulating mat can be formed from several layers, which have a higher temperature resistance towards the inside of the furnace, in order to make the production cheaper in this way, since the cost of insulating material naturally increases in accordance with its temperature resistance.

Die Erfindung ist nachstehend anhand der Zeichnung beispielsweise näher erläutert. Diese zeigt in

  • Fig. 1 eine Vorrichtung gemäß der Erfindung mit zwei aneinandergrenzenden Isolierblocks in perspektivischer Darstellung,
  • Fig. 2 einen in eine Ofendecke fertig eingesetzten Isolierblock in Seitenansicht und in
  • Fig. 3 eine perspektivisch-schematische Darstellung einer Vielzahl von fertig montierten Isolierblocks zur vollständigen Auskleidung einer Ofendecke gemäß der Erfindung.
The invention is explained below with reference to the drawing, for example. This shows in
  • 1 shows a device according to the invention with two adjacent insulating blocks in a perspective view,
  • Fig. 2 shows an insulating block inserted into a furnace ceiling in side view and in
  • Fig. 3 is a perspective-schematic representation of a plurality of fully assembled insulating blocks for the complete lining of a furnace ceiling according to the invention.

Bei den in den Fig. 1 und 2 wiedergegebenen, jeweils insgesamt mit dem Bezugszeichen 1 versehenen Isolierblocks ist jeweils eine wellenförmig bzw. mäanderartig gefaltete Isoliermatte 2 aus mehreren Lagen temperaturfesten, keramischen Fasermaterials gebildet, wobei die einzelnen Lagen zum Ofeninneren hin, d.h. gemäß den Fig. 1 und 2, nach unten abgestuft höhere Temperaturbeständigkeit aufweisen.1 and 2, each provided with the overall reference number 1, a corrugated or meandering folded insulating mat 2 is formed from several layers of temperature-resistant, ceramic fiber material, the individual layers facing the furnace interior, i.e. 1 and 2, have higher temperature resistance graded downwards.

Etwas unterhalb der äußeren Faltenenden wird jede Isoliermatte 2 von zwei Tragstangen 3 durchsetzt, die mit Traglaschen 4 verschraubt oder in anderer Weise befestigt sind, welche ihrerseits mit einer vorzugsweise aus Stahlblech gebildeten Basisplatte 5 verbunden sind, welche an zwei einander gegenüberliegenden Seiten abgekantete, nach außen gerichtete Stege 6 aufweist, in denen Befestigungsöffnungen 7 ausgebildetsind, die zur Verbindung benachbarter Isolierblöcke mittels diese öffnungen durchsetzender Befestigungsschrauben vorgesehen sind. Zwischen benachbarten Isolierblocks 1 ist dabei jeweils ein Dämpfungs- bzw. Ausgleichselement 8 angeordnet, das ebenfalls aus keramischem Fasermaterial besteht, vorzugsweise dem gleichen Fasermaterial wie die innere Lage jeder Isoliermatte 2.Slightly below the outer ends of the folds, each insulating mat 2 is penetrated by two support rods 3, which are screwed to support straps 4 or fastened in another way, which in turn are connected to a base plate 5, preferably made of sheet steel, which is bent on two opposite sides, towards the outside has directed webs 6, in which fastening openings 7 are formed, which are provided for connecting adjacent insulating blocks by means of fastening screws passing through these openings. A damping or compensating element 8, which likewise consists of ceramic fiber material, preferably the same fiber material as the inner layer of each insulating mat 2, is arranged between adjacent insulating blocks 1.

Ferner sind in der Basisplatte 5 nach außen gerichtete Aufhängehaken 9 drehbar gelagert. Wie Fig. 2 zeigt, dienen diese Aufhängehaken 9 zum Einhaken bzw. Einhängen an Haltestangen 10, die an U-förmigen Trägern 11 einer Ofendecke abgehängt sind, wobei zwischen den Trägern 11 lösbare Gitterroste 12 angeordnet sind.In addition, outwardly directed suspension hooks 9 are rotatably mounted in the base plate 5. As shown in FIG. 2, these suspension hooks 9 are used for hooking or hanging on holding rods 10, which are suspended from U-shaped supports 11 of an oven ceiling, with releasable gratings 12 being arranged between the supports 11.

Bei dem in Fig. 2 wiedergegebenen Einbaubeispiel ist jeweils eine Reihe von Isolierblöcken 1 in einer Gasse zw-i-sehen einer Reihe von schematisch angedeuteten Reaktionsrohren 13 sowie auf der anderen Seite angeordneten Brennern 14 angeordnet, wobei in dem in Fig. 2 wiedergegebenen eingehängten Zustand der Isolierblöcke 1 jedem Aufhängehaken 9 ein Sperrstück 15 zugeordnet ist, das zwischen Abkantsteg 6 und Haltestange 10 eingesetzt ist.In the installation example shown in FIG. 2, a row of insulating blocks 1 is arranged in an aisle between two rows of schematically indicated reaction tubes 13 and burners 14 arranged on the other side, in the suspended state shown in FIG. 2 the insulating blocks 1 each suspension hook 9 is assigned a locking piece 15 which is inserted between the folding web 6 and the support rod 10.

Wie Fig. 2 ferner zeigt, ist jede Isoliermatte 2 in gefaltetem Zustand zur Erleichterung der Montage von Papierbändern 16 zusammengehalten, die bei der ersten Inbetriebnahme wegbrennen.As further shown in FIG. 2, each insulating mat 2 is held together in the folded state to facilitate the assembly of paper tapes 16 which burn away when first started up.

Bei dem Ausführungsbeispiel gemäß Fig. 3 ist eine ganze Ofendecke durchgehend mit Isolierblocks la verkleidet, die den vorbeschriebenen Isolierblocks 1 mit der Ausnahme entsprechen, daß jede Basisplatte 5a an allen vier Seiten mit hochgekanteten Stegen 6a versehen ist, derart, daß eine zusammenhängende Kassettendecke gebildet ist, wobei jeweils benachbarte Stege 6a mittels deren Befestigungsöffnungen durchsetzender Befestigungsschrauben miteinander verbunden sind. Bei im Grundriß quadratischer Ausbildung der einzelnen Isolierblöcke ordnet man diese zweckmäßig schachbrettartig an, d.h. der Faltenverlauf der Isoliermatten benachbarter Isolierblöcke ist jeweils senkrecht zueinander gerichtet, wie dies grundsätzlich bereits bei Isolierblocks der betreffenden Art bekannt ist (DE-OS 22 31 658)..In the embodiment according to FIG. 3, an entire furnace ceiling is continuously covered with insulating blocks 1 a, which correspond to the above-described insulating blocks 1, with the exception that each base plate 5a is provided on all four sides with edged webs 6a in such a way that a continuous cassette ceiling is formed , in which in each case adjacent webs 6a are connected to one another by means of fastening screws passing through fastening openings. If the individual insulating blocks are square in plan, they are appropriately arranged in a checkerboard manner, ie the folds of the insulating mats of adjacent insulating blocks are each directed perpendicular to one another, as is already known in principle for insulating blocks of the type in question (DE-OS 22 31 658).

Wie die beschriebenen Ausführungsbeispiele zeigen, ist es aufgrund der erfindungsgemäßen Ausbildung ohne weiteres möglich, nach Lösen der einem schadhaft gewordenen Isolierblock gegenüberliegenden Abdeckplatte 12 der Ofenwandung und nach Lösen der Befestigungsschrauben in den Stegen des betreffenden Isolierblocks und Entfernen der Sperrstücke 15 einen einzelnen Isolierblock zu entfernen und innerhalb weniger Sekunden durch einen neuen Isolierblock zu ersetzen, so daß der Ofenbetrieb ungestört weitergehen kann, worauf dann das Verbinden des betreffenden Isolierblocks mit den benachbarten Isolierblöcken und Wiederanbringen der Sperrstücke in Ruhe erfolgen kann.As the described exemplary embodiments show, it is easily possible due to the design according to the invention to remove a single insulating block after loosening the cover plate 12 opposite the defective insulating block 12 of the furnace wall and after loosening the fastening screws in the webs of the relevant insulating block and removing the locking pieces 15 to be replaced within a few seconds by a new insulation block, so that the furnace can continue to operate undisturbed, whereupon the connection of the insulation block in question with the neighboring insulation blocks and reattachment of the locking pieces can take place at rest.

Natürlich sind die beschriebenen Ausführungsbeispiele in vielfacher Weise abzuändern, ohne den Grundgedanken der Erfindung zu verlassen. So können insbesondere Isolierblöcke der beschriebenen Art auch zur Auskleidung von Seitenwandungen verwendet werden. Ferner können an Stelle quadratischer Grundrißformen wabenförmige Sechsecke mit entsprechend sechs Randstegen oder andere regelmäßig zusammensetzbare Polygonformen verwendet werden. An Stelle von durchgehenden Haltestangen für das Einhängen der an den Basisplatten befestigten Haken können andere Aufhängeelemente, wie Einhängeösen o. dgl., an der betreffenden Ofenwandkonstruktion vorgesehen sein. Auch könnte die Isoliermatte in anderer als der beschriebenen Weise an der Basisplatte befestigt sein, beispielsweise durch die bekannten, in einzelne äußere Faltenenden der Isoliermatte eingelegte Tragprofile gemäß DE-OS 26 35 623 und dgl. mehr.Of course, the exemplary embodiments described can be modified in many ways without departing from the basic idea of the invention. In particular, insulating blocks of the type described can also be used for lining Be walls are used. Furthermore, honeycomb-shaped hexagons with a corresponding six edge webs or other regularly assembled polygon shapes can be used instead of square outline shapes. Instead of continuous holding rods for hanging the hooks fastened to the base plates, other hanging elements, such as hanging eyes or the like, can be provided on the furnace wall construction in question. The insulating mat could also be attached to the base plate in a manner other than that described, for example by the known support profiles according to DE-OS 26 35 623 and the like inserted into individual outer fold ends of the insulating mat and the like. More.

Claims (8)

1. Vorrichtung zur Innenwandauskleidung von Industrieöfen mit einer Anzahl von Isolierblöcken, von denen jeder eine wellenförmig gefaltete, ggf. vernadelte Isoliermatte aus hochtemperaturfestem Material, insbesondere keramischem Fasermaterial, aufweist, in deren äußerem Faltenbereich Tragelemente angeordnet sind, welche mit auf der Außenseite des Isolierblocks vorgesehenen Befestigungsmitteln zur gesonderten Befestigung jedes Isolierblocks an der Ofenwandung verbindbar sind, dadurch gekennzeichnet, daß jeder Isolierblock (1) an seiner Außenseite eine Basisplatte (5) mit mindestens zwei an einander gegenüberliegenden Seiten befindlichen, nach auswärts gerichteten Stegen (6) aufweist, derart, daß benachbarte Isolierblöcke mittels diese Stege durchsetzender Befestigungsschrauben kassettenartig miteinander verbindbar sind, und daß die Basisplatte (5) als Verbindungselement zwischen den Tragelementen (3) für die gefaltete Isoliermatte (2) und den Befestigungsmitteln (9) dient.1.Device for lining the inner wall of industrial furnaces with a number of insulating blocks, each of which has a corrugated, possibly needled insulating mat made of high-temperature-resistant material, in particular ceramic fiber material, in the outer fold area of which supporting elements are arranged, which are provided on the outside of the insulating block Fastening means for separately fastening each insulating block to the furnace wall can be connected, characterized in that each insulating block (1) has on its outside a base plate (5) with at least two outwardly directed webs (6) located on opposite sides, in such a way that Adjacent insulating blocks can be connected to one another in a cassette-like manner by means of fastening screws passing through these webs, and that the base plate (5) serves as a connecting element between the support elements (3) for the folded insulating mat (2) and the fastening means (9). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Befestigungsmittel von in der Basisplatte (5) drehbar gelagerten Haken (9) gebildet sind, die in an der Ofenwandung (11,12) vorgesehene Haltemittel, insbesondere durchlaufende Haltestangen (10), einhängbar sind.2. Device according to claim 1, characterized in that the fastening means of the base plate (5) rotatably mounted hooks (9) are formed, which are provided in the holding means provided on the furnace wall (11, 12), in particular continuous holding rods (10) are. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß jedem Befestigungshaken (9) ein Arretierungselement (15) zugeordnet ist.3. Device according to claim 2, characterized in that each fastening hook (9) is assigned a locking element (15). 4. Vorrichtung nach Anspruch 2 und 3, dadurch gekennzeichnet, daß das Arretierungselement von einem zwischen Haltemittel (10) und benachbartem Basisplatten-Steg (6) einschiebbaren Sperrstück (15) gebildet ist.4. Apparatus according to claim 2 and 3, characterized in that the locking element is formed by a locking piece (15) which can be inserted between the holding means (10) and the adjacent base plate web (6). 5. Vorrichtung nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß die Tragelemente für die gefaltete Is-oliermatte (2) von mindestens zwei alle Falten durchsetzenden, mit der Basisplatte (5) verbindbaren Tragstangen (3) gebildet sind.5. The device according to claim 1 or one of the following, characterized in that the support elements for the folded insulating mat (2) of at least two folds penetrating, with the base plate (5) connectable support rods (3) are formed. 6. Vorrichtung nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß zwischen gegeneinanderliegenden Basisplatten-Stegen (6) benachbarter Isolierblöcke (1) jeweils ein an sich bekanntes Dämpfungs- bzw. Ausgleichselement (8) aus hochtemperaturfestem Material angeordnet ist.6. The device according to claim 1 or one of the following, characterized in that between mutually opposed base plate webs (6) of adjacent insulating blocks (1) each a known damping or compensating element (8) made of high temperature resistant material is arranged. 7. Vorrichtung nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß jede Isoliermatte (2) in gefaltetem Zustand mit deren Montage erleichternden Bändern (16) zusammengehalten ist.7. The device according to claim 1 or one of the following, characterized in that each insulating mat (2) is held together in the folded state with its assembly-facilitating tapes (16). 8. Vorrichtung nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß jede Isoliermatte (2) aus mehreren Lagen besteht, die zum Ofeninneren.hin abgestuft höhere Temperaturbetändigkeit aufweisen.8. The device according to claim 1 or one of the following, characterized in that each insulating mat (2) from meh There are other layers that have a higher temperature resistance towards the inside of the furnace.
EP79200724A 1978-12-28 1979-12-04 Device for lining the inner walls of industrial furnaces Expired EP0013039B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782856441 DE2856441A1 (en) 1978-12-28 1978-12-28 DEVICE FOR LINING THE INTERNAL WALL OF INDUSTRIAL OVENS
DE2856441 1978-12-28

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EP0013039A1 true EP0013039A1 (en) 1980-07-09
EP0013039B1 EP0013039B1 (en) 1981-10-28

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US (1) US4287839A (en)
EP (1) EP0013039B1 (en)
CA (1) CA1127011A (en)
DE (2) DE2856441A1 (en)
DK (1) DK550779A (en)

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Also Published As

Publication number Publication date
EP0013039B1 (en) 1981-10-28
DK550779A (en) 1980-06-29
US4287839A (en) 1981-09-08
DE2961173D1 (en) 1982-01-07
DE2856441A1 (en) 1980-07-17
CA1127011A (en) 1982-07-06

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