EP4124814A1 - Insulating module support for furnace lining - Google Patents

Abstract

The present invention relates to an insulation module carrier (1) for furnace lining, comprising a base plate (2) with at least one fastening device (3) for attaching the insulation module carrier (1) to an inner furnace wall and at least two from the top of the base plate (2) in essentially the same Support arms (4a, 4b) pointing in the spatial direction, on each of which at least one retaining mandrel (5a, 5a', 5b, 5b') is attached for fastening an insulating material block (6). The invention further relates to an insulation module (20) with such an insulation module carrier (1), an oven insulation (30) comprising at least two such insulation modules (20) and a method for producing such an oven insulation (30).

Description

The present invention relates to an insulation module carrier for furnace lining, comprising a base plate with at least one fastening device for attaching the insulation module carrier to an inner furnace wall and at least two support arms pointing from the top side of the base plate in essentially the same spatial direction, on each of which at least one holding mandrel for fastening a block of insulation material is attached . The invention further relates to an insulation module with such an insulation module carrier, a furnace insulation comprising at least two such insulation modules and a method for producing such a furnace insulation.

Furnaces, which are mainly run in batch mode at operating temperatures between 1000 and 1650 °C and are therefore exposed to strong temperature changes, are often lined with modules made of high-temperature wool (HTW). Even stoves that do not require high storage heat in the wall area are insulated with the same. These typically consist of an insulation module carrier to which the insulation material blocks made of high-temperature wool are attached. In the case of high-temperature wool, there are basically three different types of high-temperature wool, namely alkaline earth wool (AES), aluminum silicate wool (ASW) or ceramic fibers (RCF) and polycrystalline wool (PCW).

The alkaline earth wools are mostly used at temperatures up to approx. 1200 °C, the aluminum silicate wools and ceramic fibers up to 1300 °C and the polycrystalline wools up to 1650 °C. Combinations of different wool types are possible. For example, at temperatures around 1400 °C, PCW are used in the hot area and ASW in the cold area. When using high-temperature wool, the chemical atmospheres are usually also taken into account.

So-called blanket pieces made of high-temperature wool are pressed into modules as linings in order to compensate for shrinkage of the materials due to crystallization effects and are mounted on the outer housing of the furnace with the help of insulation module carriers. For thermal and cost reasons, rear insulation a few centimeters thick can also be used in front of the steel casing of the stove. Common materials here are, for example, calcium silicate boards.

Module technology has been widespread since the mid-1990s. The HTW modules have low thermal conductivity, low heat capacities and high resistance to temperature changes and can therefore be used for energy-efficient operation of furnaces. However designed their assembly proves to be complex. In the 7 an isolation module carrier known from the prior art is shown. With this system, the insulation module carrier, also known as the anchor, is supplied separately and only inserted into the fiber module on site. The anchor is fastened with a washer and nut by screwing it to the inner wall of the furnace, which is very time-consuming. A further disadvantage of this system is that the backing insulation typically used is not compressible and gaps can form between the backing insulation and the modules, particularly on ceilings where the modules sink slightly under their own weight.

A further disadvantage of this known system can be seen in the fact that an arrangement of the modules in the "chessboard system", in which the following module is arranged rotated by 90°, is not possible, but only laying "in line". In addition, due to the type of attachment by means of screws, so-called end modules have to be set in the edge areas, which differ in structure from the modules used on the surfaces. At least two different types of modules are therefore required, which, in addition to disadvantages in the manufacture of the furnace insulation, also entails logistical disadvantages.

DE 19 76 236 U discloses a refractory lining for interior walls and/or the interior ceilings of an industrial furnace. The working lining of the lining, which consists of ramming mass and faces the combustion chamber, is anchored by several ceramic anchors which are held in a vertical or radial direction between two pliers-like ceramic blocks connected to the outer wall of the furnace. These holding blocks are walled into the masonry arranged between the outer wall of the furnace and the working lining and protrude from this masonry only as far as is necessary to clamp the movable ceramic holders located in the working lining. The ceramic anchors are provided on two opposite outer surfaces with trapezoidal grooves embedded in the anchor material and on the other two outer surfaces with attached ribs and the ends facing away from the combustion chamber of the anchors are arranged so that they can move vertically or horizontally between two ceramic blocks, with the clamps each have a trapezoidal rib on one side in the area of the head ends and that the clamps are located in the masonry arranged between the outer wall of the furnace and the rammed working lining, with the exception of the head ends intended for receiving the anchors.

The object of the present invention was therefore to provide an insulation module carrier that can be installed more easily. In addition, the insulation module carrier should allow the production of insulation modules with which the best possible insulating oven insulation can be produced, in particular those in which the modules are arranged in a checkerboard system can become. Advantageously, the insulation module carrier according to the invention allows the production of insulation modules that can be installed both in the surfaces and in the edge areas and thus makes special end modules superfluous. In particular, the insulation module with the insulation module carrier according to the invention should be able to be delivered pre-assembled to the construction site, so that on-site assembly of the insulation modules is no longer necessary.

This object is achieved according to the invention by an insulation module carrier for furnace lining, comprising a base plate with at least one fastening device for attaching the insulation module carrier to an inner furnace wall and at least two support arms pointing from the top side of the base plate in essentially the same spatial direction, on each of which at least one holding mandrel for fastening a block of insulation material is attached, wherein the insulation module carrier is characterized in that the fastening device has a latching device which can be engaged and releasably connected to a retaining bolt which can be fastened to the inner wall of the furnace.

In the present context, essentially the same spatial direction means that the support arms are arranged parallel to one another, with deviations of, for example, 15° or less, preferably 10° or less, being able to occur.

The present invention is based on the finding that the fact that the fastening device has a latching device which can be engaged and releasably connected to a retaining bolt that can be fastened to the inner wall of the furnace means that assembly can take place in a much more time-saving manner. Not only is there no screwing, but no special tools are required for assembly. Typically, retaining bolts, for example threaded bolts, are welded onto the inner wall of the furnace as later central fastening points of the insulation module. The already pre-assembled insulation module then only needs to be pushed onto the threaded bolt, with the insulation module being fixed by the latching device. It is also advantageous here that the latching device can be designed in the shape of a dome, for example made of sheet metal bent in a dome shape, so that this component has spring elasticity and can be pressed onto the threaded bolt with a certain amount of pretension. In addition, the latching device can, to a certain extent, better accommodate temperature-related linear expansion and the resulting stresses. A further advantage is that with the insulation module carrier according to the invention, an arrangement of the insulation modules in a “chessboard system” is possible, in which the following module is arranged rotated by 90°. Among other things, this can reduce the lateral heat propagation in the furnace insulation.

As already mentioned above, with the in 7 illustrated insulation module carrier from the prior art, the problem that the flush closure to the rear insulation is missing and thus optimal thermal insulation is not guaranteed. One of the reasons for this is that with this system, the insulation module carrier (comb anchor) is first screwed onto the inner wall of the furnace and only then are the insulation material blocks pushed laterally onto the forks of the comb anchor. In some cases, the blocks of insulating material can tilt unnoticed, resulting in cavities between the backing insulation and the blocks of insulating material as well as between the two blocks of insulating material pushed onto a comb anchor, particularly in the area of the backing insulation. In the system according to the invention, the already pre-assembled module is pushed directly onto the retaining bolt by the integrated anchor and can thus be pressed and clicked in with the entire support against the rear insulation.

According to a preferred embodiment of the insulation module carrier according to the invention, the latching device has a dome-shaped elevation pointing away from the upper side of the base plate with a central opening for the retaining bolt. A passage opening for the retaining bolt is provided below the central opening in the base plate. In this configuration, at least one incision, preferably four incisions, which are more preferably arranged in the shape of a cross, can advantageously branch off from the central opening. In a particularly advantageous development, the incision can end in a preferably circular recess at its end opposite the central opening. This enables it to be pushed particularly easily onto the retaining bolt, in particular the threaded bolt.

The material of the base plate, the fastening device, the support arms and the holding mandrels can be selected independently of one another from steel, stainless steel, in particular 1.4841, or also nickel-based alloys such as Inconel ^® alloys, in particular Inconel ^® 600 and Inconel ^® 718, which is preferably heated at temperatures of 200 °C to 500 °C is used. The material of the base plate, the fastening device, the support arms and the holding mandrels is preferably the same.

In a further preferred embodiment of the insulation module carrier according to the invention, the support arms are made from sheet metal. The base plate can also be made of sheet metal and the support arms can be formed by cutting and preferably folding the sheet metal at right angles. This is very advantageous because it allows the majority of the insulation module carrier to be manufactured in a simple manner in a few work steps from a single sheet metal section.

In the case of the insulation module carrier according to the invention, it can also be provided that the retaining mandrel of one support arm is aligned essentially parallel to the retaining mandrel of the other support arm. This makes it easier to slide on the insulation made of high-temperature wool.

According to a preferred embodiment of the insulation module carrier according to the invention, each support arm is equipped with two retaining pins aligned with one another. As a result, insulation made from high-temperature wool can be fastened quickly and reliably to the insulation module carrier.

Another object of the present invention relates to an insulation module comprising an insulation module carrier according to the invention and an insulation material block which is attached to the insulation module carrier, the insulation material block preferably having a square or rectangular base area on the side facing the base plate of the insulation module carrier.

The material of the insulating material block can be selected from refractory vacuum molded parts or pressed high-temperature wool, with the high-temperature wool preferably used according to the invention being selected from alkaline earth silicate wool (AES), in particular from calcium-magnesium silicate wool, calcium silicate wool and magnesium silicate wool, from aluminum silicate wool (ASW), as well as aluminum silicate zirconium wool and polycrystalline wool (PCW) or mixtures of these.

The block of insulating material is particularly preferably formed from high-temperature wool, particularly preferably from pieces of high-temperature wool mat pressed together, with the block of insulating material being able to comprise a retaining cord with which the block of insulating material can be pretensioned for assembly and, after assembly has been completed, can be relaxed by cutting through the retaining cord. The retaining cord can be designed as a round cord or else in the form of a band, for example.

The pressing can also be realized by mounting plates. The insulating material block is provided on at least two opposite side surfaces pointing away from the base plate of the insulation module carrier, each with a removable mounting plate, which is encompassed by the retaining cord and with which the insulating material block is pretensioned for assembly and, after assembly has been completed, by cutting through the retaining cord and removing the mounting plates relaxation can be brought. The mounting plates are preferably dimensioned in such a way that they cover the side surfaces of the insulating material block as completely as possible. The mounting plates are made of plastic, for example.

The block of insulating material can be formed, for example, from at least two, preferably from 10 or more, layers of high-temperature wool lying one on top of the other.

In an advantageous development of the insulation module according to the invention, this has a detachable tubular assembly insert, which is aligned with the passage opening of the base plate and the central opening of the locking device and extends essentially vertically through the insulating material block, pointing away from the base plate, the tubular assembly insert preferably being formed by a plastic tube is. Also, the tubular mounting insert can be made of a cardboard, ceramic or metal tube.

Another object of the present invention is directed to a furnace insulation, comprising at least two, preferably a large number of retaining bolts fastened essentially perpendicularly to the inner wall of the furnace and insulation modules according to the invention fastened thereto, as well as optionally rear insulation provided between the inner wall of the furnace and the insulation modules, for example made of vacuum molded parts or calcium silicate plates , wherein adjacent insulation modules are preferably arranged rotated by substantially 90 ° to each other. In the present case, “substantially 90°” means a possible deviation of up to +/-10°, preferably of up to +/-5°, more preferably of up to +/-2°. As an alternative to this checkerboard arrangement, however, a parallel arrangement is also possible.

In the furnace insulation according to the invention, it is further preferred that the retaining bolt is designed as a threaded bolt. However, other configurations are also possible, which allow engagement with the latching device of the insulation module carrier, such as bolts in a horizontal corrugation.

The retaining bolt preferably has a recess for centering an assembly aid at its end opposite the furnace inner wall. This makes assembly much easier, since the assembly personnel can hardly visually check whether the assembly aid is seated in the middle.

In a further development of the furnace insulation according to the invention, an insulating mat can be provided between two horizontal rows of insulation modules, which is preferably cut in the shape of a staircase at its abutting edges to the adjacent mat. This further increases the insulating effect. The step-shaped cutting makes it more difficult for hot gases to migrate out of the furnace and thus for the formation of heat bridges, which means that the insulating effect is also increased.

In a further preferred embodiment of the furnace insulation according to the invention, the insulation modules fitted in the corners of the furnace are of identical construction compared to those on FIG the oven walls. As already explained above, this is not readily possible in the systems known from the prior art.

1. a) Befestigung eines Haltebolzens auf der Ofeninnenwand, vorzugsweise mittels Punktschweißen;
2. b) optionales Positionieren einer stangenförmigen Montagehilfe in der Vertiefung des Haltebolzens, wobei die stangenförmige Montagehilfe zu diesem Zweck mit einem Zentrierdorn ausgerüstet ist, der in die Vertiefung des Haltebolzens eingreift;
3. c) Aufbringen und Fixieren eines erfindungsgemäßen Isolationsmoduls auf dem Haltebolzen durch Ineingriffbringen der Rasteinrichtung mit dem Haltebolzen, wobei das Aufbringen vorzugweise derart erfolgt, dass das Isolationsmodul mit dem rohrförmigen Montageeinsatz über die stangenförmige Montagehilfe geschoben wird, bis die Rasteinrichtung auf dem Haltebolzen einrastet und anschließend die Montagehilfe und der rohrförmige Montageeinsatz entfernt werden;
4. d) Wiederholen der Schritte a) bis c) bis die Ofeninnenwand zumindest abschnittsweise ausgekleidet ist und gegebenenfalls Durchtrennen der Halteschnur und gewünschtenfalls Entfernen der Montageplatten.

The present invention also relates to a method for producing a furnace insulation according to the invention, comprising the following steps:

1. a) Attachment of a retaining bolt to the inner wall of the furnace, preferably by means of spot welding;
2. b) optional positioning of a rod-shaped assembly aid in the recess of the retaining bolt, the rod-shaped assembly aid being equipped for this purpose with a centering mandrel which engages in the recess of the retaining bolt;
3. c) Applying and fixing an insulation module according to the invention on the retaining bolt by bringing the locking device into engagement with the retaining bolt, the application preferably being carried out in such a way that the insulation module with the tubular assembly insert is pushed over the rod-shaped assembly aid until the locking device engages on the retaining bolt and then the Mounting aid and the tubular mounting insert are removed;
4. d) repeating steps a) to c) until the inner wall of the furnace is lined at least in sections and, if necessary, cutting through the retaining cord and, if desired, removing the mounting plates.

If side plates are used instead of the retaining cord, these are pulled out at the end of step d).

1. 1. Isolationsmodulträger 1 zur Ofenauskleidung, umfassend eine Basisplatte 2 mit zumindest einer Befestigungseinrichtung 3 zur Anbringung des Isolationsmodulträgers 1 an einer Ofeninnenwand 31 und wenigstens zwei von der Oberseite der Basisplatte 2 in im Wesentlichen gleiche Raumrichtung weisenden Tragarmen 4a, 4b an denen jeweils wenigstens ein Haltedorn 5a, 5a', 5b, 5b' zur Befestigung eines Isolationswerkstoffblocks 6 angebracht ist, dadurch gekennzeichnet, dass
   die Befestigungseinrichtung 3 über eine Rasteinrichtung 7 verfügt, die mit einem an der Ofeninnwand 31 befestigbaren Haltebolzen 8 in Eingriff gebracht und lösbar verbunden werden kann.
2. 2. Isolationsmodulträger nach Ausführungsform 1, dadurch gekennzeichnet, dass die Rasteinrichtung 7 eine von der Oberseite der Basisplatte wegweisende kuppelförmige Erhebung 9 mit einer zentralen Öffnung 10 für den Haltebolzen 8 aufweist und unterhalb der zentralen Öffnung 10 in der Basisplatte 2 eine Durchlassöffnung 11 für den Haltebolzen 8 vorgesehen ist.
3. 3. Isolationsmodulträger nach Ausführungsform 2, dadurch gekennzeichnet, dass von der zentralen Öffnung 10 wenigstens ein Einschnitt 12 abgeht, vorzugsweise vier Einschnitte, die weiter bevorzugt kreuzförmig angeordnet sind.
4. 4. Isolationsmodulträger nach Ausführungsform 3, dadurch gekennzeichnet, dass der Einschnitt an seinem der zentralen Öffnung 10 gegenüberliegenden Ende in einer vorzugsweise kreisrunden Aussparung 13 endet.
5. 5. Isolationsmodulträger nach einer der vorstehenden Ausführungsformen, dadurch gekennzeichnet, dass das Material der Basisplatte 2, der Befestigungseinrichtung 3, der Tragarme 4a, 4b und der Haltedorne 5a, 5a', 5b, 5b' unabhängig voneinander ausgewählt ist aus Stahl, Edelstahl oder Nickelbasislegierungen, wobei das Material der Basisplatte 2, der Befestigungseinrichtung 3, der Tragarme 4a, 4b und der Haltedorne 5a, 5a', 5b, 5b' vorzugsweise gleich ist.
6. 6. Isolationsmodulträger nach einer der vorstehenden Ausführungsformen, dadurch gekennzeichnet, dass die Tragarme 4a, 4b aus einem Metallblech gefertigt sind.
7. 7. Isolationsmodulträger nach Ausführungsform 6, dadurch gekennzeichnet, dass die Basisplatte aus einem Metallblech gefertigt ist und die Tragarme 4a, 4b durch Einschneiden und vorzugsweise rechtwinkliges Abkanten des Metallblechs gebildet sind.
8. 8. Isolationsmodulträger nach einer der vorstehenden Ausführungsformen, dadurch gekennzeichnet, dass der Haltedorn 5a, 5a' des einen Tragarms 4a im wesentlichen parallel zu dem Haltedorn 5b, 5b' des weiteren Tragarms 4b ausgerichtet ist.
9. 9. Isolationsmodulträger nach einer der vorstehenden Ausführungsformen, dadurch gekennzeichnet, dass jeder Tragarm 4a, 4b mit zwei miteinander fluchtenden Haltedornen 5a, 5a', 5b, 5b'ausgestattet ist.
10. 10. Isolationsmodul 20 umfassend einen Isolationsmodulträger 1 nach einer der Ausführungsformen 1 bis 9 und einen Isolationswerkstoffblock 6, der an dem Isolationsmodulträger 1 befestigt ist, wobei der Isolationswerkstoffblock 6 auf der zur Basisplatte 2 des Isolationsmodulträgers 1 weisenden Seite vorzugsweise eine quadratische oder rechteckige Grundfläche aufweist.
11. 11. Isolationsmodul nach Ausführungsform 10, dadurch gekennzeichnet, dass das Material des Isolationswerkstoffblocks 6 ausgewählt ist aus Feuerfest-Vakuumformteilen oder verpressten Hochtemperaturwollen, wobei die Hochtemperaturwolle vorzugsweise ausgewählt ist aus Erdalkalisilikatwolle (AES), insbesondere aus Calcium-Magnesium-Silikatwolle, Calcium-Silikatwolle und Magnesium-Silikatwolle, aus Aluminium-Silikatwolle (ASW), sowie Aluminium-Silikat-Zirkonwolle und polykristalliner Wolle (PCW) oder Mischungen von diesen.
12. 12. Isolationsmodul nach Ausführungsform 11, dadurch gekennzeichnet, dass der Isolationswerkstoffblock 6 aus Hochtemperaturwolle gebildet ist und eine Halteschnur 14 umfasst, mit welcher der Isolationswerkstoffblock 6 zur Montage vorgespannt und nach erfolgter Montage mittels Durchtrennen der Halteschnur 14 zur Relaxation gebracht werden kann.
13. 13. Isolationsmodul nach Ausführungsform 12, dadurch gekennzeichnet, dass der Isolationswerkstoffblock 6 an wenigstens zwei gegenüberliegenden und von der Basisplatte 2 des Isolationsmodulträgers 1 wegweisenden Seitenflächen mit jeweils einer entfernbaren Montageplatte versehen ist, welche von der Halteschnur 14 umgriffen wird und mit welchen der Isolationswerkstoffblock 6 zur Montage vorgespannt und nach erfolgter Montage mittels Durchtrennen der Halteschnur 14 und Entfernen der Montageplatten zur Relaxation gebracht werden kann.
14. 14. Isolationsmodul nach einer der Ausführungsformen 11 bis 13, dadurch gekennzeichnet, dass der Isolationswerkstoffblock 6 aus wenigstens zwei, bevorzugt aus 10 oder mehr, aufeinanderliegenden Lagen Hochtemperaturwolle gebildet ist.
15. 15. Isolationsmodul nach einer der Ausführungsformen 10 bis 14, dadurch gekennzeichnet, dass das Isolationsmodul 20 einen lösbaren rohrförmigen Montageeinsatz aufweist, der mit der Durchlassöffnung 11 der Basisplatte 2 und der zentralen Öffnung 10 der Rasteinrichtung 7 fluchtet und sich im Wesentlichen vertikal von der Basisplatte 2 wegweisend durch den Isolationswerkstoffblock 6 erstreckt, wobei der rohrförmige Montageeinsatz vorzugsweise durch ein Kunststoffrohr gebildet ist.
16. 16. Ofenisolation 30 umfassend wenigstens zwei, vorzugsweise eine Vielzahl von im wesentlichen senkrecht auf der Ofeninnenwand 31 befestigten Haltebolzen 8 und daran befestigten Isolationsmodulen 20 nach einer der Ausführungsformen 10 bis 15 sowie optional eine zwischen der Ofeninnenwand 31 und den Isolationsmodulen 20 vorgesehenen Hinterisolierung 32, wobei benachbarte Isolationsmodule vorzugsweise um im Wesentlichen 90° zueinander gedreht angeordnet sind.
17. 17. Ofenisolation nach Ausführungsform 16, dadurch gekennzeichnet, dass der Haltebolzen 8 als Gewindebolzen ausgestaltet ist.
18. 18. Ofenisolation nach Ausführungsform 16 oder 17, dadurch gekennzeichnet, dass der Haltebolzen 8 an seinem der Ofeninnenwand gegenüberliegenden Ende eine Vertiefung 15 zur Zentrierung einer Montagehilfe aufweist.
19. 19. Ofenisolation nach einer der Ausführungsformen 16 bis 18, dadurch gekennzeichnet, dass zwischen zwei horizontalen Reihen von Isolationsmodulen 20 eine Isoliermatte 33 vorgesehen ist, die an ihren den Stoßkanten zur benachbarten Matte vorzugsweise treppenförmig geschnitten ist.
20. 20. Ofenisolation nach einer der Ausführungsformen 16 bis 19, dadurch gekennzeichnet, dass die in den Ecken des Ofens angebrachten Isolationsmodule identischer Bauart verglichen mit denen auf den Ofenwänden sind.
21. 21. Verfahren zur Herstellung einer Ofenisolation 30 nach einer der Ausführungsformen 16 bis 20 umfassend die folgenden Schritte:
    1. a) Befestigung eines Haltebolzens 8 auf der Ofeninnenwand 31, vorzugsweise mittels Punktschweißen;
    2. b) optionales Positionieren einer stangenförmigen Montagehilfe in der Vertiefung 15 des Haltebolzens 8, wobei die stangenförmige Montagehilfe zu diesem Zweck mit einem Zentrierdorn ausgerüstet ist, der in die Vertiefung15 des Haltebolzens 8 eingreift;
    3. c) Aufbringen und Fixieren eines Isolationsmoduls 20 gemäß einer der Ausführungsformen 10 bis 15 auf dem Haltebolzen 8 durch Ineingriffbringen der Rasteinrichtung 7 mit dem Haltebolzen 8, wobei das Aufbringen vorzugweise derart erfolgt, dass das Isolationsmodul 20 mit dem rohrförmigen Montageeinsatz über die stangenförmige Montagehilfe geschoben wird, bis die Rasteinrichtung 7 auf dem Haltebolzen 8 einrastet und anschließend die Montagehilfe und der rohrförmige Montageeinsatz entfernt werden;
    4. d) Wiederholen der Schritte a bis c bis die Ofeninnenwand 31 zumindest abschnittsweise ausgekleidet ist und gegebenenfalls Durchtrennen der Halteschnur 14 und gewünschtenfalls Entfernen der Montageplatten.

The invention relates in particular to the following embodiments:

1. 1. Insulation module carrier 1 for lining the furnace, comprising a base plate 2 with at least one fastening device 3 for attaching the insulation module carrier 1 to an inner furnace wall 31 and at least two support arms 4a, 4b pointing from the top side of the base plate 2 in essentially the same spatial direction, on each of which at least one holding pin 5a, 5a', 5b, 5b' for fastening an insulating material block 6, characterized in that
   the fastening device 3 has a latching device 7 which can be engaged and releasably connected to a retaining bolt 8 which can be fastened to the inner wall 31 of the furnace.
2. 2. Insulation module carrier according to embodiment 1, characterized in that the locking device 7 has a dome-shaped elevation 9 pointing away from the top of the base plate with a central opening 10 for the retaining bolt 8 and below the central opening 10 in the base plate 2 a passage opening 11 for the retaining bolt 8 is provided.
3. 3. Insulation module carrier according to embodiment 2, characterized in that at least one incision 12 extends from the central opening 10, preferably four incisions, which are more preferably arranged in the shape of a cross.
4. 4. Insulation module carrier according to embodiment 3, characterized in that the incision ends in a preferably circular recess 13 at its end opposite the central opening 10 .
5. 5. Insulation module carrier according to one of the preceding embodiments, characterized in that the material of the base plate 2, the fastening device 3, the support arms 4a, 4b and the holding mandrels 5a, 5a', 5b, 5b' is selected independently from steel, stainless steel or nickel-based alloys , wherein the material of the base plate 2, the fastening device 3, the support arms 4a, 4b and the holding mandrels 5a, 5a ', 5b, 5b' is preferably the same.
6. 6. Insulation module carrier according to one of the preceding embodiments, characterized in that the support arms 4a, 4b are made of sheet metal.
7. 7. Insulation module carrier according to embodiment 6, characterized in that the base plate is made of sheet metal and the support arms 4a, 4b are formed by cutting and preferably folding the metal sheet at right angles.
8. 8. Insulation module carrier according to one of the preceding embodiments, characterized in that the retaining mandrel 5a, 5a' of one support arm 4a is aligned essentially parallel to the retaining mandrel 5b, 5b' of the other support arm 4b.
9. 9. Insulation module carrier according to one of the preceding embodiments, characterized in that each support arm 4a, 4b is equipped with two retaining pins 5a, 5a', 5b, 5b' which are aligned with one another.
10. 10. insulation module 20 comprising an insulation module carrier 1 according to one of the embodiments 1 to 9 and an insulation material block 6, which is attached to the insulation module carrier 1, wherein the insulation material block 6 on the base plate 2 of the insulation module carrier 1 facing side preferably has a square or rectangular base.
11. 11. Insulation module according to embodiment 10, characterized in that the material of the insulating material block 6 is selected from refractory vacuum molded parts or pressed high-temperature wool, the high-temperature wool preferably being selected from alkaline earth silicate wool (AES), in particular from calcium-magnesium silicate wool, calcium silicate wool and magnesium silicate wool, aluminum silicate wool (ASW), as well as aluminum silicate zirconium wool and polycrystalline wool (PCW) or mixtures of these.
12. 12. Insulation module according to embodiment 11, characterized in that the block of insulating material 6 is formed from high-temperature wool and includes a retaining cord 14, with which the block of insulating material 6 can be prestressed for assembly and, after assembly has been completed, can be relaxed by cutting through the retaining cord 14.
13. 13. The insulation module according to embodiment 12, characterized in that the insulation material block 6 is provided on at least two opposite side surfaces pointing away from the base plate 2 of the insulation module carrier 1, each with a removable mounting plate, which is encompassed by the retaining cord 14 and with which the insulation material block 6 Installation can be prestressed and brought to relaxation after installation by cutting the retaining cord 14 and removing the mounting plates.
14. 14. Insulation module according to one of embodiments 11 to 13, characterized in that the insulating material block 6 is formed from at least two, preferably from 10 or more layers of high-temperature wool lying on top of one another.
15. 15. Insulation module according to one of the embodiments 10 to 14, characterized in that the insulation module 20 has a detachable tubular assembly insert which is aligned with the passage opening 11 of the base plate 2 and the central opening 10 of the latching device 7 and extends essentially vertically from the base plate 2 pioneeringly extends through the insulating material block 6, the tubular mounting insert preferably being formed by a plastic tube.
16. 16. Furnace insulation 30 comprising at least two, preferably a multiplicity of retaining bolts 8 fastened essentially perpendicularly to the furnace inner wall 31 and insulation modules 20 fastened thereto according to one of the embodiments 10 to 15 and optionally one between the furnace inner wall 31 and the insulation modules 20 provided rear insulation 32, wherein adjacent insulation modules are preferably arranged rotated by substantially 90 ° to each other.
17. 17. Furnace insulation according to embodiment 16, characterized in that the retaining bolt 8 is designed as a threaded bolt.
18. 18. Furnace insulation according to embodiment 16 or 17, characterized in that the retaining bolt 8 has a depression 15 for centering an assembly aid at its end opposite the furnace inner wall.
19. 19. Furnace insulation according to one of the embodiments 16 to 18, characterized in that an insulating mat 33 is provided between two horizontal rows of insulation modules 20, which is preferably cut in a stepped manner at its abutting edges to the adjacent mat.
20. 20. Furnace insulation according to any one of embodiments 16 to 19, characterized in that the insulation modules fitted in the corners of the furnace are of identical construction compared to those on the furnace walls.
21. 21. Method for producing a furnace insulation 30 according to one of the embodiments 16 to 20 comprising the following steps:
    1. a) Fastening of a retaining bolt 8 on the furnace inner wall 31, preferably by means of spot welding;
    2. b) optional positioning of a rod-shaped assembly aid in the recess 15 of the retaining bolt 8, the rod-shaped assembly aid being equipped for this purpose with a centering mandrel which engages in the recess 15 of the retaining bolt 8;
    3. c) Applying and fixing an insulation module 20 according to one of the embodiments 10 to 15 on the retaining bolt 8 by bringing the locking device 7 into engagement with the retaining bolt 8, the application preferably being carried out in such a way that the insulation module 20 with the tubular assembly insert is pushed over the rod-shaped assembly aid until the locking device 7 engages on the retaining bolt 8 and then the assembly aid and the tubular assembly insert are removed;
    4. d) repeating steps a to c until the inner wall 31 of the furnace is lined at least in sections and, if necessary, cutting through the retaining cord 14 and, if desired, removing the mounting plates.

Fig. 1

eine Ausführungsform eines erfindungsgemäßen Isolationsmodulträgers in 3-dimensionaler Darstellung von schräg oben,

Fig. 2

den Isolationsmodulträger aus Fig.1 in der Draufsicht,

Fig. 3

den Isolationsmodulträger aus Fig.2 in Schrittansicht entlang der Linie A - A,

Fig. 4

den Isolationsmodulträger aus Fig.2 in Schrittansicht entlang der Linie B - B,

Fig. 5

einen Isolationswerkstoffblock für einen erfindungsgemäßen Isolationsmodulträger,

Fig. 6

einen Ausschnitt aus einer erfindungsgemäßen Ofenisolation,

Fig. 7

ein Isolationsmodul gemäß dem Stand der Technik in 3-dimensionaler Darstellung von schräg oben, sowie

Fig. 8

ein erfindungsgemäßes Isolationsmodul in 3-dimensionaler Darstellung von schräg oben.

The present invention is based on one in the Figs. 1 to 8 illustrated embodiment explained in more detail. In it shows

1

an embodiment of an insulation module carrier according to the invention in a 3-dimensional representation obliquely from above,

2

the isolation module carrier Fig.1 in top view,

3

the isolation module carrier Fig.2 in step view along line A - A,

4

the isolation module carrier Fig.2 in step view along line B - B,

figure 5

an insulation material block for an insulation module carrier according to the invention,

6

a section of a furnace insulation according to the invention,

7

an isolation module according to the state of the art in a 3-dimensional representation obliquely from above, as well as

8

an insulation module according to the invention in a 3-dimensional representation obliquely from above.

In the Figs. 1 to 4 an insulation module carrier 1 according to the invention for lining the furnace is shown, in 1 in 3-dimensional representation from diagonally above, in 2 in top view, in 3 in step view along the line A - A 2 and in 4 in step view along the line B - B 2 . The insulation module carrier 1 is made of stainless steel and includes a base plate 2 with a fastening device 3 for attaching the insulation module carrier 1 to an inner wall 31 of the furnace and two support arms 4a, 4b extending at right angles from the upper side of the base plate 2. Two holding pins 5a, 5a', 5b, 5b' are attached to each support arm 4a, 4b for fastening an insulating material block 6, with the holding pins 5a, 5a' of one support arm 4a being essentially parallel to the holding pins 5b, 5b' of the other support arm 4b are aligned. The holding mandrels 5a, 5a' of the first support arm 4a are aligned with one another and the holding mandrels 5b, 5b' of the second support arm 4b are aligned with one another. The holding mandrels 5a, 5a', 5b, 5b' are designed to taper at their free end, which makes it easier to slip on a block of insulating material 6.

The fastening device 3 has a latching device 7 which can be engaged and releasably connected to a retaining bolt 8 which can be fastened to the inner wall 31 of the furnace. For this purpose, the retaining bolt 8 has an external thread into which the edges of the latching device 7 engage. The latching device 7 has a dome-shaped elevation 9 pointing away from the upper side of the base plate 2 and having a central opening 10 for the retaining bolt 8 . In addition, a passage opening 11 for the retaining bolt 8 is provided in the base plate 2 below the central opening 10 . Four incisions 12 proceed from the central opening 10, which are further arranged in the shape of a cross and each end in a circular recess 13 at the end opposite the central opening 10. FIG.

The insulation module carrier 1 is produced from sheet metal, with the support arms 4a, 4b being formed by cutting and preferably folding the sheet metal at right angles. The remaining part of the sheet metal then forms the base plate 2, resulting in material waste. The holding mandrels 5a, 5a', 5b, 5b' are then welded to the support arms 4a, 4b and the fastening device 3 to the base plate 2.

In figure 5 shows an insulation material block 6 made of five superimposed layers of pressed high-temperature wool, which is pushed onto the holding mandrels 5a, 5a', 5b, 5b' of the insulation module carrier 1, so that an insulation module 20 is formed. The block of insulating material 6 is prestressed for assembly by means of a plurality of retaining cords 14 . After assembly has been completed, the retaining cords 14 are severed and the insulating material block 6 is thus relaxed. As a result, the spaces between the insulation modules 20 that arise during the installation of a furnace insulation 30 are closed.

6 1 shows a furnace insulation 30 made up of a large number of insulation modules 20 according to the invention fastened to an inner furnace wall 31 . Rear insulation 32 is also fitted between the inner furnace wall 31 and the insulation modules 20 . An insulating mat 33 is provided between each two horizontal rows of insulation modules 20 .

To produce the furnace insulation 30, the retaining bolts 8 are first fastened in predetermined positions on the furnace inner wall 31 by means of spot welding. The positioning can take place by means of a cross-line laser or by means of a batter board with a chalk line, with the aid of which the grid can be transferred to the inner wall 31 of the furnace. Next, a rod-shaped assembly aid equipped with a centering mandrel can be positioned in a recess 15 of the retaining bolt 8 . In this case, the insulation module 20 has a detachable tubular assembly insert in the form of a plastic tube, which is aligned with the passage opening 11 of the base plate 2 and the central opening 10 of the latching device 7 and is essentially vertical extending from the base plate 2 through the insulating material block 6 pointing away. The insulation module 20 is now pushed onto the rod-shaped assembly aid with the plastic tube as a guide and pressed onto the inner wall 31 of the oven, so that the insulation module 20 is fixed by bringing the latching device 7 into engagement with the retaining bolt 8 . The locking device 7 is guided precisely onto the retaining bolt 8 through the interaction of the plastic tube and the assembly aid. The assembly aid and the tubular assembly insert are then removed. Since the insulating material block 6 is prestressed, the opening for the plastic pipe closes by itself after it has been removed.

These steps are repeated until the furnace inner wall 31 is lined at least in sections. After each horizontal layer of insulation modules 20 produced in this way, a layer of an insulating mat 33 is applied thereto. The retaining cords 14 of the insulating material blocks 6 are then severed and pulled out, as a result of which the gaps between the insulating modules 20 close and the insulating mat 33 is also clamped and thus fixed.

In 7 an isolation module 21 according to the prior art is shown in a three-dimensional representation obliquely from above. The insulation module 21, which is not according to the invention, comprises an insulation module carrier 21 to be screwed onto the inner wall 31 of the oven and an insulation material block 6 attached thereto. The insulation material block 6 is shown as transparent for reasons of clarity. In 8 the insulation module carrier 20 according to the invention is shown in the same perspective for direct comparison.

Reference list:

1

isolation module carrier

2

base plate

3

fastening device

4a, 4b

Beam

5a, 5a', 5b, 5b'

retaining mandrel

6

insulation material block

7

locking device

8th

retaining bolts

9

dome-shaped elevation

10

central opening

11

passage opening

12

incision

13

circular recess

14

retaining cord

15

Indentation for centering an assembly aid

20

isolation module (according to the invention)

21

Isolation module (state of the art)

30

furnace insulation

31

furnace inner wall

32

back insulation

33

insulating mat

Claims (15)

Insulation module carrier (1) for furnace lining, comprising a base plate (2) with at least one fastening device (3) for attaching the insulation module carrier (1) to an inner furnace wall (31) and at least two pointing from the upper side of the base plate (2) in essentially the same spatial direction Carrying arms (4a, 4b) on which at least one holding mandrel (5a, 5a', 5b, 5b') is attached for fastening an insulating material block (6),
characterized in that
the fastening device (3) has a latching device (7) which can be engaged and releasably connected to a retaining bolt (8) which can be fastened to the inner wall (31) of the furnace. Insulation module carrier according to Claim 1, characterized in that the latching device (7) has a dome-shaped elevation (9) pointing away from the top side of the base plate with a central opening (10) for the retaining bolt (8) and below the central opening (10) in the Base plate (2) a passage opening (11) for the retaining bolt (8) is provided. Insulation module carrier according to Claim 2, characterized in that at least one incision (12), preferably four incisions, which are more preferably arranged in the shape of a cross, extends from the central opening (10), the incision preferably being at its end opposite the central opening (10) in a preferably circular recess (13) ends. Insulation module carrier according to one of the preceding claims, characterized in that the material of the base plate (2), the fastening device (3), the support arms (4a, 4b) and the holding pins (5a, 5a', 5b, 5b') is selected independently of one another made of steel, stainless steel or nickel-based alloys, the material of the base plate (2), the fastening device (3), the support arms (4a, 4b) and the holding mandrels (5a, 5a', 5b, 5b') preferably being the same and/or the Support arms (4a, 4b) are made from sheet metal, the base plate (2) preferably being made from sheet metal and the support arms (4a, 4b) being formed by cutting and preferably folding the metal sheet at right angles. Insulation module carrier according to one of the preceding claims, characterized in that the retaining mandrel (5a, 5a') of one support arm (4a) is essentially parallel to the retaining mandrel (5b, 5b') of the further support arm (4b) and/or each support arm (4a, 4b) is equipped with two holding pins (5a, 5a', 5b, 5b') aligned with one another. Insulation module (20) comprising an insulation module carrier (1) according to one of Claims 1 to 5 and an insulation material block (6) which is fastened to the insulation module carrier (1), the insulation material block (6) on the base plate (2) of the insulation module carrier ( 1) facing side preferably has a square or rectangular base. Insulation module according to Claim 6, characterized in that the material of the insulating material block (6) is selected from refractory vacuum molded parts or pressed high-temperature wool, the high-temperature wool preferably being selected from alkaline earth silicate wool (AES), in particular from calcium-magnesium silicate wool, calcium silicate wool and Magnesium silicate wool, aluminum silicate wool (ASW), and aluminum silicate zirconium wool and polycrystalline wool (PCW) or mixtures of these, wherein the insulating material block (6) is preferably formed from high-temperature wool and includes a retaining cord (14) with which the block of insulating material (6) can be prestressed for assembly and relaxed after assembly by cutting through the retaining cord (14). Insulation module according to Claim 7, characterized in that the insulation material block (6) is provided on at least two opposite side surfaces pointing away from the base plate (2) of the insulation module carrier (1) with a removable mounting plate each, which is encompassed by the retaining cord (14) and with which the insulating material block (6) can be pretensioned for assembly and, after assembly has been completed, can be relaxed by cutting through the retaining cord (14) and removing the assembly plates. Insulation module according to Claim 7 or 8, characterized in that the insulating material block (6) is formed from at least two, preferably 10 or more layers of high-temperature wool lying on top of one another. Insulation module according to one of Claims 6 to 9, characterized in that the insulation module (20) has a detachable tubular assembly insert which is aligned with the passage opening (11) in the base plate (2) and the central opening (10) in the latching device (7) and extends substantially vertically from the base plate (2) through the block of insulating material (6), the tubular mounting insert preferably being formed by a plastic tube. Furnace insulation (30) comprising at least two, preferably a large number of retaining bolts (8) fastened essentially perpendicularly to the furnace inner wall (31) and insulation modules (20) fastened thereto according to one of Claims 6 to 10 and optionally one between the furnace inner wall (31) and the insulation modules (20) provided rear insulation (32), wherein adjacent insulation modules are preferably arranged rotated by substantially 90 ° to each other. Furnace insulation according to Claim 11, characterized in that the retaining bolt (8) is designed as a threaded bolt and/or the retaining bolt (8) has a recess (15) at its end opposite the furnace inner wall for centering an assembly aid. Furnace insulation according to Claim 11 or 12, characterized in that between two horizontal rows of insulation modules (20) there is an insulating mat (33) which is preferably cut in the shape of a step at its abutting edges to the adjacent mat. Furnace insulation according to any one of claims 11 to 13, characterized in that the insulation modules fitted in the corners of the furnace are of identical construction compared to those on the furnace walls. A method for manufacturing a furnace insulation (30) according to any one of claims 11 to 14, comprising the following steps: a) Fastening of a retaining bolt (8) on the furnace inner wall (31), preferably by means of spot welding; b) optional positioning of a rod-shaped assembly aid in the recess (15) of the retaining bolt (8), the rod-shaped assembly aid being equipped for this purpose with a centering mandrel which engages in the recess (15) of the retaining bolt (8); c) applying and fixing an insulation module (20) according to one of claims 6 to 10 on the retaining bolt (8) by bringing the locking device (7) into engagement with the retaining bolt (8), the application preferably being carried out in such a way that the insulation module (20) the tubular assembly insert is pushed over the rod-shaped assembly aid until the latching device (7) engages on the retaining bolt (8) and the assembly aid and the tubular assembly insert are then removed; d) repeating steps a) to c) until the furnace inner wall (31) is lined at least in sections and, if necessary, cutting through the retaining cord (14) and, if desired, removing the mounting plates.

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