EP1112947A2 - Mounting device for hot gaz or expansion nozzles in reaction rooms passages, as in the heat exchangers of the cement's production - Google Patents
Mounting device for hot gaz or expansion nozzles in reaction rooms passages, as in the heat exchangers of the cement's production Download PDFInfo
- Publication number
- EP1112947A2 EP1112947A2 EP00127712A EP00127712A EP1112947A2 EP 1112947 A2 EP1112947 A2 EP 1112947A2 EP 00127712 A EP00127712 A EP 00127712A EP 00127712 A EP00127712 A EP 00127712A EP 1112947 A2 EP1112947 A2 EP 1112947A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- shaped block
- receiving box
- wall
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- F27D1/0023—Linings or walls comprising expansion joints or means to restrain expansion due to thermic flows
-
- 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
- F27D1/145—Assembling elements
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
Definitions
- the invention relates to a device according to the preamble of patent claim 1.
- Such known devices such as EP 0 555 725 or DE-C 38 41 381, have one either directly or via a molded block into a passage opening in a reaction chamber arranged exchange box, inside which the hot fire nozzle or expansion nozzle is detachably received via a mounting flange, so that the nozzle can be replaced with a new nozzle in the event of damage.
- the exchange box and nozzle extend to the inside of the furnace extend and in particular arranged flush with the inner surface of the furnace wall are, which leads to significant wear problems, since the atmosphere inside the furnace must be described as extremely aggressive.
- Such a wear-related Exchange of nozzle and exchange box is with a corresponding material and Labor associated.
- the object of the invention is to provide a device which is not only easy to assemble but also includes a wear-reducing arrangement or receptacle of the nozzle and in particular enables a quick replacement of a destroyed nozzle. Also the receiving box is intended to be largely exposed to the aggressive interior atmosphere remain spared from the oven.
- a molded block is placed in front of the receiving box for protection, which in particular via fastening anchors on the end face of the receiving box attached and is mainly releasably attached. Furthermore, is inside the receiving box the nozzle detachably added so that it can be exchanged for another nozzle if necessary can be. Furthermore, the nozzle is arranged within the receiving box in such a way that the front nozzle section at a distance from that preferably with the adjacent The inner wall is flush with the inside end face of the shaped block and thus also with respect the inner surface or the interior of the furnace is arranged, which is advantageous for is the wear reduction.
- the preformed stone is a prefabricated element what has the advantage that the shaped block specifically within a plant to the application needs can be prefabricated and thus the molded block designed for optimal operating conditions is. In the case of such shaped stones, it is important that they have an exact composition between dry matter and water must be ensured to during operation to avoid that the molded block is susceptible to wear, especially porous.
- the molded block and the receiving box via an expansion joint opposite the inner wall the through hole of the reaction chamber arranged which is manufacturing technology expediently takes place in that after fastening the receiving box on the Portions of the outer wall of the reaction chamber set in the through opening
- Apply a suitable coat of thick paint to the molded block and the receiving box or one Fireproof felt fabric is handled in the manner of a mat, taking thick paint and Felt fabrics can decompose more or less during operation.
- the front nozzle section within the shaped block with an annular gap opposite the inner shell of the shaped block is arranged, the annular gap through a packing can be bridged. This not only makes it easier to insert the nozzle a possible exchange but also the removal of the nozzle.
- the transfer of vibrations caused by the operation of the air blast device on the others Components reduced.
- This will form stone and in particular the device surrounding sections of the furnace wall hardly affected by vibrations, so that effectively the risk of cracking can be prevented, which is a considerable advantage represents the device according to the invention.
- the device stands out characterized in that the parts can be assembled and disassembled very easily, the The receiving box and the nozzle are largely protected and therefore the service life is essential is longer than in known devices and also the surrounding furnace wall largely is kept vibration-free.
- the molded block is expediently in one piece, which favors simple assembly. Further is the receptacle on the molded block appropriate via a screw connection or another releasable connection, such as a clamp connection, is fastened so that the receiving box can be removed from the stone. All you need to take out the nozzle the cover plate can be removed, with which the nozzle is then also lifted becomes. If the nozzle is stuck, the screw connection between the nozzle and Cover plate can be solved and then the cover plate can be removed and finally the nozzle can be removed. Also the removal of the shaped stone, even if this as a result furnace operation is stuck due to mass to be added, can be easily carried out, which in turn is favored by the expansion joint.
- the one according to the invention is also expedient Design of the nozzle, which tapers conically on the one hand and then in parallel walls runs out on the inside of the furnace and on average perpendicular to it over a small opening angle expands what offers fluidic advantages.
- Figure 1 shows a receiving box 1, which is preferably made of sheet steel or cast can be and preferably from the outside in a through opening 2 of the wall 3 a reaction chamber is inserted and arranged.
- the outer casing of the receiving box 1 is adapted to the geometry of the through opening, mostly either rectangular or round.
- the receiving box 1 has a circumferential internally drawn shoulder 4, which forms the inside end face of the receiving box 1.
- the receiving box 1 is placed in front of a shaped block designated 5, which in its Outer contour as well as the receiving box 1 adapted to the contour of the through opening is.
- the shaped block 5 is a prefabricated part and made of a refractory mass or ceramic mass.
- 5 anchors are in the molded block 6 embedded, which protrude from the outside of the molded block and as a connecting bolt for attachment to the receiving box 1, here by a screw connection, serve, the screw nut is designated 7.
- the screw nut is designated 7.
- at least two screw anchors 6 are provided.
- a screw connection can also be another suitable detachable connection, in particular a clamp connection be provided.
- a welded connection would also be possible, in which case however, to remove the receiving box 1 the connection must be destroyed by an abrasive witch or the like.
- the receiving box 1 On the outside, that is, outside the wall 3 of the reaction chamber, the receiving box 1 depending on the outwardly drawn mounting flange 8, on which one designated 9 Cover plate is attached, here by screw connections 10 distributed over the circumference.
- the cover plate 9 in turn carries a tube 10 with an end arranged Connection flange 11, which is used to attach the air blast device, which is useful again by means of screw connections not shown here.
- the cover plate 9, the Tube 10 and the connecting flange 11 can be welded or cast Execution be made.
- On the cover plate 9 is in turn detachable, that is interchangeable, the hot fire nozzle or expansion nozzle 12 attached and that in the here shown Embodiment again via a screw connection, which can be seen in Figure 2 and is given the reference number 13.
- the Attachment of the hot fire nozzle provided two flange-like tabs 14 projecting outwards, however, a circumferential flange or the like is also provided can be.
- the receiving box 1 is via a mounting flange 15, here as a flat iron frame formed, preferably attached by welding, the outer wall here a steel wall 16 is formed. In the case of a flat iron frame, this is also with the Receptacle box 1 welded.
- the shaped block 5 which is a prefabricated molded part made of refractory material, for example Silicon carbide material or ceramic material is preferably formed in one piece, however, the shaped block 5 can expediently also be made up of several parts be, for example, from an upper part and a lower part or four side parts be formed in the case of a rectangular design of the shaped block, the side parts form the four rectangular walls.
- the nozzle is with its front Section 17 opposite the end face 18 flush with the inside of the furnace wall 3 offset towards the rear so that the front of the nozzle is subject to wear is protected.
- the front section 17 of the nozzle 12 at a certain circumferential distance from the inner wall of the shaped block 5 is arranged, the annular gap being provided with the reference number 19.
- This ring gap is preferably bridged via a seal packing 20, but this is only shown in FIG. 1 is shown.
- the nozzle which is suitably made of a wear-resistant metal alloy is, there is no connection with the shaped stone, so that they are easily excavated can.
- a seal packing could also be dispensed with, because during of operation material accumulates within the annular gap 19 and builds this up.
- the ring game 19 ensures advantages when removing the nozzle 12, since this despite baking of material within the annular gap 19 easily excavated to the outside can be. If a packing 20 is missing, bulk goods would only be in the rear located chamber 21 of the receiving box discharged and could be removed the nozzle can be easily removed after unscrewing the cover plate 9, so that then the nozzle 12 can be removed.
- the between shaped stone 5, receiving box 1 and the inner wall of the through opening 2 provided expansion joint, which is also an annular gap is designated by the reference numeral 21.
- the receiving box 1 is first over the mounting flange 15 attached to the outside of the reaction chamber, in the illustrated embodiment by welding to the steel wall 16 via a flat iron frame 15 the receiving box 1 with the form stone attached and fastened to the receiving box 1 5 inside the through hole 2. Then the furnace wall around the device forming refractory mass 22 provided.
- the expansion joint 21 can be ensured be that molded stone and receiving box 1 either with a coat of paint be provided from a mass that burns or is destroyed during operation or that around the shaped stone 5 and the receiving box 1 in a fireproof felt fabric Kind of a mat or the like is arranged, which then more during operation or less can resolve.
- the expansion joint 21 has the advantage that due to the shock-like vibrations within the device caused by the operation of the air blast device are generated, hardly any vibrations are transmitted to the surrounding furnace wall be so that the risk of cracking within the furnace wall is reduced.
- the same advantage results from the annular gap 19, since it has the expansion joint there both the front nozzle section, which is made of a high quality material Nozzle 12 as well as the inner jacket of the shaped block made from complex refractory material 5 largely from loads during operation as a result of the operation of the Air blast device is spared vibrations.
- the nozzle 12 has one particularly advantageous shape, which is optimized with regard to flow technology.
- the nozzle widens from the area of the connection to the cover plate 9 towards the inside of the oven and advantageously over the entire length of the nozzle and at a comparatively small opening angle between 10 and 20 degrees, in particular around the range of 15 degrees.
- the section is perpendicular to it, like figure 2 identifies the nozzle starting from the connection to the cover plate 9 conically inwards tapered, but with the front region of the nozzle inside the shaped block is carried out with parallel walls 23 and 24.
- the inner jacket is advantageously of the shaped stone slightly tapered to the outside and rounded off at 25, so that the nozzle can be easily inserted into the opening of the shaped block 5.
- the stabilization is in the front nozzle section 17 in the illustrated embodiment in the middle there is a web 26 which can also be seen in FIG. 3 and which connects the parallel walls 23 and 24 connects together.
- a web 26 which can also be seen in FIG. 3 and which connects the parallel walls 23 and 24 connects together.
- two bridge arranged in the middle two can also be used or several webs can be arranged distributed over the width of the outlet opening of the nozzle.
- FIG. 3 finally shows the end face of the front nozzle section 17 with the web 26, the annular gap 19 and the shaped stone 5.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Gas Burners (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a device according to the preamble of patent claim 1.
Derartige bekannte Vorrichtungen, etwa EP 0 555 725 oder DE-C 38 41 381, weisen einen entweder unmittelbar oder über einen Formstein in eine Durchgangsöffnung einer Reaktionskammer angeordneten Wechselkasten auf, innerhalb dem die Heißbranddüse oder Expansionsleitdüse über einen Befestigungsflansch lösbar aufgenommen ist, so daß die Düse im Falle einer Beschädigung durch eine neue Düse ersetzt werden kann. Bei diesen bekannten Vorrichtungen ist es nachteilhaft, daß Wechselkasten und Düse sich bis zum Ofeninneren erstrecken und insbesondere bündig mit der Innenfläche der Ofenwand angeordnet sind, was zu erheblichen Verschleißproblemen führt, da die Atmosphäre innerhalb des Ofens als außerordentlich aggressiv bezeichnet werden muß. Ein solcher verschleißbedingter Austausch von Düse und Wechselkasten, ist jedoch mit einem entsprechenden Material- und Arbeitsaufwand verbunden. Zwar ist es auch bekannt, den vorderen Abschnitt der Düse mit Abstand zur Innenseite der Ofenwand anzuordnen, jedoch ist bei dieser bekannten Vorrichtung der Aufbau insgesamt aufwendig, weil die Düse innerhalb eines mehrteiligen Gebildes aus Hüllstein und Düsenstein gehalten ist und ein Aufnahmekasten in den Hüllstein eingreifend vorgesehen ist, wodurch sich nicht nur die Fertigung und der Einbau verkompliziert sondern auch Schwierigkeiten bei einem etwaigen Austausch von Bauteilen der Vorrichtung zu gewärtigen sind.Such known devices, such as EP 0 555 725 or DE-C 38 41 381, have one either directly or via a molded block into a passage opening in a reaction chamber arranged exchange box, inside which the hot fire nozzle or expansion nozzle is detachably received via a mounting flange, so that the nozzle can be replaced with a new nozzle in the event of damage. With these known Devices it is disadvantageous that the exchange box and nozzle extend to the inside of the furnace extend and in particular arranged flush with the inner surface of the furnace wall are, which leads to significant wear problems, since the atmosphere inside the furnace must be described as extremely aggressive. Such a wear-related Exchange of nozzle and exchange box, however, is with a corresponding material and Labor associated. While it is also known to use the front section of the nozzle Distance to the inside of the furnace wall to be arranged, but in this known device the overall structure is complex because the nozzle within a multi-part structure is made of enveloping stone and nozzle stone and engaging a receiving box in the enveloping stone is provided, which not only complicates the manufacture and installation but also difficulties with a possible replacement of components of the device are to be expected.
Aufgabe der Erfindung ist es, eine Vorrichtung zu schaffen, die nicht nur leicht montierbar ist, sondern die auch eine verschleißmindernde Anordnung bzw. Aufnahme der Düse beinhaltet und insbesondere einen schnellen Austausch einer zerstörten Düse ermöglicht. Auch der Aufnahmekasten soll hierbei weitgehend gegenüber der aggressiven Innenatmosphäre des Ofens verschont bleiben. The object of the invention is to provide a device which is not only easy to assemble but also includes a wear-reducing arrangement or receptacle of the nozzle and in particular enables a quick replacement of a destroyed nozzle. Also the receiving box is intended to be largely exposed to the aggressive interior atmosphere remain spared from the oven.
Diese Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruches 1 enthaltenen Merkmale gelöst, wobei zweckmäßige Weiterbildungen durch die in den Unteransprüchen enthaltenen Merkmale gekennzeichnet sind.This object is achieved by the characterizing part of claim 1 Characteristics contained solved, expedient further developments by the in the dependent claims included features are marked.
Nach Maßgabe der Erfindung ist dem Aufnahmekasten zum Schutze ein Formstein vorgesetzt, der insbesondere über Befestigungsanker an der Stirnfläche des Aufnahmekastens befestigt und zwar vornehmlich lösbar befestigt ist. Ferner ist innerhalb des Aufnahmekastens die Düse lösbar aufgenommen, so daß sie bei Bedarf gegen eine andere Düse ausgetauscht werden kann. Ferner ist die Düse innerhalb des Aufnahmekastens derart angeordnet, daß der vordere Düsenabschnitt mit Abstand gegenüber der vorzugsweise mit der angrenzenden Innenwand bündigen innenseitigen Stirnfläche des Formsteins und damit auch bezüglich der Innenfläche bzw. des Innenraums des Ofens angeordnet ist, was vorteilhaft für die Verschleißminderung ist. Der vorgesetzte Formstein ist ein vorgefertigtes Element, was den Vorteil hat, daß der Formstein speziell innerhalb eines Werks auf die Einsatzbedürfnisse vorgefertigt werden kann und damit der Formstein auf optimale Betriebsverhältnisse ausgelegt ist. Bei derartigen Formsteinen ist es wichtig, daß hier eine genaue Zusammensetzung zwischen Trockenmasse und Wasser gewährleistet sein muß, um während des Betriebs zu vermeiden, daß der Formstein verschleißanfällig, insbesondere porös wird. Vorteilhaft ist ferner der Formstein und der Aufnahmekasten über eine Dehnungsfuge gegenüber der Innenwand der Durchgangsöffnung der Reaktionskammer angeordnet, was herstellungstechnisch dadurch zweckmäßig erfolgt, daß die nach Befestigung des Aufnahmekastens an der Außenwand der Reaktionskammer in die Durchgangsöffnung gesetzten Abschnitte von Formstein und Aufnahmekasten mit einem geeigneten Dickanstrich versehen oder aber ein feuerfestes Filzgewebe in Art einer Matte umgeschlagen wird, wobei sich Dickanstrich und Filzgewebe während des Betriebs mehr oder weniger zersetzen können. Ferner ist auch bevorzugt, daß der vordere Düsenabschnitt innerhalb des Formsteins mit Ringspalt gegenüber dem Innenmantel des Formsteins angeordnet ist, wobei der Ringspalt durch eine Dichtungspackung überbrückt sein kann. Dadurch erleichtert sich nicht nur das Einsetzen der Düse bei einem allfälligen Austausch sondern auch die Herausnahme der Düse. Ferner wird das Übertragen von durch den Betrieb des Luftstoßgeräts erzeugten Erschütterungen auf die übrigen Bauteile vermindert. Dadurch werden Formstein und insbesondere die die Vorrichtung umgebenden Abschnitte der Ofenwand kaum durch Erschütterungen beeinträchtigt, so daß wirksam die Gefahr einer Rißbildung verhindert werden kann, was einen erheblichen Vorteil der erfindungsgemäßen Vorrichtung darstellt. Insgesamt zeichnet sich die Vorrichtung dadurch aus, daß die Teile sehr leicht montiert und auch demontiert werden können, der Aufnahmekasten und die Düse weitgehend geschützt und damit die Lebensdauer wesentlich länger als bei bekannten Vorrichtungen ist und auch die umgebende Ofenwand weitgehend erschütterungsfrei gehalten ist.According to the invention, a molded block is placed in front of the receiving box for protection, which in particular via fastening anchors on the end face of the receiving box attached and is mainly releasably attached. Furthermore, is inside the receiving box the nozzle detachably added so that it can be exchanged for another nozzle if necessary can be. Furthermore, the nozzle is arranged within the receiving box in such a way that the front nozzle section at a distance from that preferably with the adjacent The inner wall is flush with the inside end face of the shaped block and thus also with respect the inner surface or the interior of the furnace is arranged, which is advantageous for is the wear reduction. The preformed stone is a prefabricated element what has the advantage that the shaped block specifically within a plant to the application needs can be prefabricated and thus the molded block designed for optimal operating conditions is. In the case of such shaped stones, it is important that they have an exact composition between dry matter and water must be ensured to during operation to avoid that the molded block is susceptible to wear, especially porous. It is advantageous furthermore the molded block and the receiving box via an expansion joint opposite the inner wall the through hole of the reaction chamber arranged, which is manufacturing technology expediently takes place in that after fastening the receiving box on the Portions of the outer wall of the reaction chamber set in the through opening Apply a suitable coat of thick paint to the molded block and the receiving box or one Fireproof felt fabric is handled in the manner of a mat, taking thick paint and Felt fabrics can decompose more or less during operation. It is also preferred that the front nozzle section within the shaped block with an annular gap opposite the inner shell of the shaped block is arranged, the annular gap through a packing can be bridged. This not only makes it easier to insert the nozzle a possible exchange but also the removal of the nozzle. Furthermore, the transfer of vibrations caused by the operation of the air blast device on the others Components reduced. This will form stone and in particular the device surrounding sections of the furnace wall hardly affected by vibrations, so that effectively the risk of cracking can be prevented, which is a considerable advantage represents the device according to the invention. Overall, the device stands out characterized in that the parts can be assembled and disassembled very easily, the The receiving box and the nozzle are largely protected and therefore the service life is essential is longer than in known devices and also the surrounding furnace wall largely is kept vibration-free.
Zweckmäßigerweise ist der Formstein einteilig, was die einfache Montage begünstigt. Ferner ist der Aufnahmekasten am Formstein zweckmäßig über eine Schraubverbindung oder eine andere lösbare Verbindung, wie Klemmverbindung, befestigt, so daß der Aufhahmekasten vom Formstein abgenommen werden kann. Zur Herausnahme der Düse braucht lediglich die Abdeckplatte abgenommen werden, mit der dann auch die Düse ausgehoben wird. Bei Festsitzen der Düse kann auch zuerst die Schraubverbindung zwischen Düse und Abdeckplatte gelöst werden und kann dann die Abdeckplatte abgenommen und schließlich die Düse entfernt werden. Auch die Herausnahme des Formsteins, selbst wenn dieser infolge des Ofenbetriebs durch zusetzende Masse festsitzt, kann einfach vorgenommen werden, was wiederum durch die Dehnfuge begünstigt wird. Zweckmäßig ist auch die erfindungsgemäße Ausführung der Düse, die einerseits sich konisch verjüngt und dann in Parallelwände ofeninnenseitig ausläuft und im Schnitt senkrecht hierzu sich über einen geringen Öffnungswinkel aufweitet, was strömungstechnische Vorteile bietet.The molded block is expediently in one piece, which favors simple assembly. Further is the receptacle on the molded block appropriate via a screw connection or another releasable connection, such as a clamp connection, is fastened so that the receiving box can be removed from the stone. All you need to take out the nozzle the cover plate can be removed, with which the nozzle is then also lifted becomes. If the nozzle is stuck, the screw connection between the nozzle and Cover plate can be solved and then the cover plate can be removed and finally the nozzle can be removed. Also the removal of the shaped stone, even if this as a result furnace operation is stuck due to mass to be added, can be easily carried out, which in turn is favored by the expansion joint. The one according to the invention is also expedient Design of the nozzle, which tapers conically on the one hand and then in parallel walls runs out on the inside of the furnace and on average perpendicular to it over a small opening angle expands what offers fluidic advantages.
Nachfolgend wird ein bevorzugtes Ausführungsbeispiel der Erfindung anhand der Zeichnungen beschrieben:
- Figur 1
- eine Schnittansicht durch die erfindungsgemäße Vorrichtung in Anordnung innerhalb der Durchgangsöffhung einer Reaktionskammer,
Figur 2- eine um 90 Grad gegenüber der Schnittansicht nach Figur 1 versetzte Schnittansicht der Vorrichtung sowie
Figur 3- eine Stirnansicht der Vorrichtung von der Innenseite der Reaktionskammer her gesehen.
- Figure 1
- 2 shows a sectional view through the device according to the invention in an arrangement within the passage opening of a reaction chamber,
- Figure 2
- a sectional view of the device offset by 90 degrees compared to the sectional view of Figure 1 and
- Figure 3
- an end view of the device seen from the inside of the reaction chamber.
Figur 1 zeigt einen Aufhahmekasten 1, der vorzugsweise aus Stahlblech oder aus Guß hergestellt
sein kann und vorzugsweise von außen her in eine Durchgangsöffnung 2 der Wand
3 einer Reaktionskammer eingesetzt und angeordnet ist. Der Außenmantel des Aufnahmekastens
1 ist der Geometrie der Durchgangsöffnung angepaßt, zumeist entweder rechteckig
oder rund. Am innenseitigen Stirnende weist der Aufnahmekasten 1 eine umlaufende, nach
innen gezogene Schulter 4 auf, die die innenseitige Stirnfläche des Aufnahmekastens 1 bildet.
Dem Aufnahmekasten 1 ist ein mit 5 bezeichneter Formstein vorgesetzt, der in seiner
Außenkontur ebenso wie der Aufnahmekasten 1 der Kontur der Durchgangsöffnung angepaßt
ist. Der Formstein 5 ist ein vorgefertigtes Teil und aus einer feuerfesten Masse oder
keramischen Masse hergestellt.Figure 1 shows a receiving box 1, which is preferably made of sheet steel or cast
can be and preferably from the outside in a through opening 2 of the wall
3 a reaction chamber is inserted and arranged. The outer casing of the receiving box
1 is adapted to the geometry of the through opening, mostly either rectangular
or round. At the inside front end, the receiving box 1 has a circumferential
internally drawn
Gemäß dem in Figur 1 dargestellten Ausführungsbeispiel sind im Formstein 5 Befestigungsanker 6 eingebettet, die außenseitig über den Formstein vorstehen und als Verbindungsbolzen für die Befestigung am Aufnahmekasten 1, hier durch eine Schraubverbindung, dienen, wobei die Schraubmutter mit 7 bezeichnet ist. Im dargestellten Ausführungsbeispiel sind mindestens zwei Schraubanker 6 vorgesehen. Anstelle einer Schraubverbindung kann aber auch eine andere geeignete lösbare Verbindung, insbesondere Klemmverbindung vorgesehen sein. Es wäre aber auch eine Schweißverbindung möglich, wobei dann allerdings zur Abnahme des Aufnahmekastens 1 die Verbindung zerstört werden muß durch eine Schleifhexe oder dergleichen.According to the embodiment shown in Figure 1, 5 anchors are in the molded block 6 embedded, which protrude from the outside of the molded block and as a connecting bolt for attachment to the receiving box 1, here by a screw connection, serve, the screw nut is designated 7. In the illustrated embodiment at least two screw anchors 6 are provided. Instead of a screw connection can also be another suitable detachable connection, in particular a clamp connection be provided. However, a welded connection would also be possible, in which case however, to remove the receiving box 1 the connection must be destroyed by an abrasive witch or the like.
Außenseitig, also außerhalb der Wand 3 der Reaktionskammer, weist der Aufnahmekasten 1
einen je nach außen gezogenen Befestigungsflansch 8 auf, an dem eine mit 9 bezeichnete
Abdeckplatte befestigt ist, hier durch über den Umfang verteilte Schraubverbindungen 10.
Die Abdeckplatte 9 trägt ihrerseits ein Rohr 10 mit einem endseitig angeordneten
Anschlußflansch 11, der zur Befestigung des Luftstoßgerätes dient, was zweckmäßigerweise
wieder mittels hier nicht dargestellter Schraubverbindungen erfolgt. Die Abdeckplatte 9, das
Rohr 10 und der Anschlußflansch 11 können in Schweißkonstruktion oder auch in gegossener
Ausführung hergestellt sein. An der Abdeckplatte 9 ist wiederum lösbar, also austauschbar,
die Heißbranddüse oder Explansionsleitdüse 12 befestigt und zwar im hier dargestellten
Ausführungsbeispiel wiederum über eine Schraubverbindung, die aus Figur 2 ersichtlich
und mit dem Bezugszeichen 13 belegt ist. Im dargestellten Ausführungsbeispiel sind zur
Befestigung der Heißbranddüse zwei nach außen abstehende flanschartige Lappen 14 vorgesehen,
wobei jedoch ebenso ein rundumlaufender Flansch oder dergleichen vorgesehen
sein kann.On the outside, that is, outside the
Der Aufnahmekasten 1 ist über einen Befestigungsflansch 15, hier als Flacheisenrahmen
ausgebildet, vorzugsweise durch Schweißen befestigt, wobei die Außenwand hier durch
eine Stahlwand 16 gebildet ist. Im Falle eines Flacheisenrahmens ist dieser auch mit dem
Aufnahmekasten 1 verschweißt.The receiving box 1 is via a mounting flange 15, here as a flat iron frame
formed, preferably attached by welding, the outer wall here
a
Der Formstein 5, bei dem es sich um ein vorgefertigtes Formteil aus Feuerfestmasse, etwa Silicium-Carbid Material oder Keramikwerkstoff handelt, ist bevorzugt einteilig ausgebildet, jedoch kann zweckmäßigerweise der Formstein 5 auch durch mehrere Teile ineinandergesetzt sein, so beispielsweise aus einem Oberteil und einem Unterteil oder vier Seitenteile im Falle einer rechteckförmigen Ausführung des Formsteins gebildet sein, wobei die Seitenteile die vier Rechteckwände bilden.The shaped block 5, which is a prefabricated molded part made of refractory material, for example Silicon carbide material or ceramic material is preferably formed in one piece, however, the shaped block 5 can expediently also be made up of several parts be, for example, from an upper part and a lower part or four side parts be formed in the case of a rectangular design of the shaped block, the side parts form the four rectangular walls.
Wie der Figur 1 und der Figur 2 entnommen werden kann, ist die Düse mit ihrem vorderen
Abschnitt 17 gegenüber der mit der Innenseite der Ofenwand 3 bündigen Stirnfläche 18
nach hinten zur Außenseite hin versetzt, so daß die Vorderseite der Düse gegenüber Verschleiß
geschützt ist. Wiederum aus den Figuren 1 und 2 ist ersichtlich, daß der vordere Abschnitt
17 der Düse 12 im gewissen Umfangsabstand zur inneren Wand des Formsteins 5
angeordnet ist, wobei der Ringspalt mit den Bezugszeichen 19 versehen ist. Dieser Ringspalt
wird vorzugsweise über eine Dichtungspackung 20 überbrückt, die aber nur in Figur 1
dargestellt ist. Die Düse, die zweckmäßig aus einer verschleißfesten Metallegierung hergestellt
ist, geht mit dem Formstein keine Verbindung ein, so daß sie leicht ausgehoben werden
kann. Es könnte auch auf eine Dichtungspackung verzichtet werden, weil sich während
des Betriebs Material innerhalb des Ringspaltes 19 ansammelt und diesen zubaut. Jedoch
gewährleistet das Ringspiel 19 Vorteile beim Ausbau der Düse 12, da diese trotz einem Zubacken
von Material innerhalb des Ringspaltes 19 ohne weiteres nach außen ausgehoben
werden kann. Falls eine Dichtungspackung 20 fehlt, würde Schüttgut lediglich in die hinter
befindliche Kammer 21 des Aufnahmekastens ausgetragen und könnte beim Herausnehmen
der Düse nach Abschrauben der Abdeckplatte 9 ohne weiteres entnommen werden, so daß
dann die Düse 12 ausgebaut werden kann. Die zwischen Formstein 5, Aufnahmekasten 1
und Innenwand der Durchgangsöffnung 2 vorgesehene Dehnfuge, die gleichfalls als Ringspalt
ausgebildet ist, ist mit dem Bezugszeichen 21 bezeichnet.As can be seen in Figure 1 and Figure 2, the nozzle is with its
Zum Zwecke des Einbaus wird zuerst der Aufnahmekasten 1 über den Befestigungsflansch
15 an der Außenseite der Reaktionskammer befestigt, im dargestellten Ausführungsbeispiel
durch Verschweißen mit der Stahlwand 16 über einen Flacheisenrahmen 15. Dadurch sitzt
der Aufnahmekasten 1 mit dem vorgesetzten und am Aufnahmekasten 1 befestigten Formstein
5 innerhalb der Durchgangsöffnung 2. Danach wird die die Ofenwand um die Vorrichtung
bildende Feuerfestmasse 22 beigestellt. Die Dehnungsfuge 21 kann dadurch gewährleistet
werden, daß Formstein und Aufnahmekasten 1 entweder mit einem Dickanstrich
versehen werden, aus einer Masse, die während des Betriebs verbrennt oder zerstört wird
oder aber daß um den Formstein 5 und den Aufnahmekasten 1 ein feuerfestes Filzgewebe in
Art einer Matte oder dergleichen angeordnet wird, die sich dann während des Betriebs mehr
oder weniger auflösen kann. Die Dehnungsfuge 21 hat den Vorteil, daß aufgrund der
schockartigen Erschütterungen innerhalb der Vorrichtung, die durch den Betrieb des Luftstoßgerätes
erzeugt werden, kaum Erschütterungen auf die umgebende Ofenwand übertragen
werden, so daß die Gefahr einer Rißbildung innerhalb der Ofenwand vermindert wird.
Der gleiche Vorteil ergibt sich durch den Ringspalt 19, da hier über die dortige Dehnungsfuge
sowohl der vordere Düsenabschnitt, der aus einem hochwertigen Material hergestellten
Düse 12 wie auch der Innenmantel des aus aufwendiger Feuerfestmasse hergestellten Formsteins
5 weitgehend von Belastungen während des Betriebs infolge durch den Betrieb des
Luftstoßgeräts bedingten Erschütterungen verschont wird.For the purpose of installation, the receiving box 1 is first over the mounting flange
15 attached to the outside of the reaction chamber, in the illustrated embodiment
by welding to the
Wie sich aus einem Vergleich der Figur 1 und der Figur 2 ergibt, weist die Düse 12 eine
besonders vorteilhafte Form auf, die mit Hinsicht auf die Strömungstechnik optimiert ist. In
Schnitt nach Figur 1 weitet sich die Düse vom Bereich des Anschlusses an die Abdeckplatte
9 hin zur Ofeninnenseite auf und zwar vorteilhaft über die gesamte Länge der Düse und
zwar unter einem vergleichsweise geringen Öffnungswinkel zwischen 10 und 20 Grad, insbesondere
um den Bereich von 15 Grad. Hingegen ist im Schnitt senkrecht hierzu, wie Figur
2 ausweist, die Düse beginnend vom Anschluß an die Abdeckplatte 9 her konisch nach innen
verjüngt ausgebildet, wobei jedoch der vordere Bereich der Düse innerhalb des Formsteins
mit Parallelwänden 23 und 24 ausgeführt ist. Überdies ist vorteilhafterweise der Innenmantel
des Formsteins leicht konisch nach außen geführt und außen bei 25 abgerundet,
so daß die Düse leicht in die Öffnung des Formsteins 5 eingesetzt werden kann. Zum Zwecke
der Stabilisierung ist im vorderen Düsenabschnitt 17 im dargestellten Ausführungsbeispiel
mittig ein auch aus Figur 3 ersichtlicher Steg 26 vorgesehen, der die Parallelwände 23
und 24 miteinander verbindet. Anstelle eines mittig angeordneten Stegs können auch zwei
oder mehrere Stege über die Breite der Austrittsöffnung der Düse verteilt angeordnet sein.
Figur 3 zeigt schließlich die Stirnfläche des vorderen Düsenabschnitts 17 mit dem Steg 26,
den Ringspalt 19 und den Formstein 5.As can be seen from a comparison of FIG. 1 and FIG. 2, the
Claims (17)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10000023 | 2000-01-03 | ||
DE10000023A DE10000023A1 (en) | 2000-01-03 | 2000-01-03 | Device for arranging hot fire nozzles or expansion guide nozzles in through openings of reaction chambers, such as heat exchangers for cement production and the like |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1112947A2 true EP1112947A2 (en) | 2001-07-04 |
EP1112947A3 EP1112947A3 (en) | 2002-07-24 |
EP1112947B1 EP1112947B1 (en) | 2004-04-21 |
Family
ID=7626683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00127712A Expired - Lifetime EP1112947B1 (en) | 2000-01-03 | 2000-12-18 | Mounting device for hot gas or expansion nozzles in reaction rooms passages, as in the heat exchangers of the cement's production |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1112947B1 (en) |
AT (1) | ATE264797T1 (en) |
DE (2) | DE10000023A1 (en) |
DK (1) | DK1112947T3 (en) |
ES (1) | ES2218056T3 (en) |
PT (1) | PT1112947E (en) |
TR (1) | TR200401330T4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2139567A1 (en) * | 2007-04-27 | 2010-01-06 | Martin Engineering Company | Removable nozzle for use with air cannons and aerators |
DE202014002625U1 (en) | 2014-03-25 | 2015-03-27 | Agrilux Beteiligungs Gmbh | Blow-out system for air blast equipment |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202010012637U1 (en) | 2010-09-15 | 2010-11-18 | Agrilux Beteiligungs Gmbh | Air blast device with an air blast device with hot blast nozzle arranged thereon |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0555725A1 (en) | 1992-02-11 | 1993-08-18 | AGRICHEMA Materialflusstechnik GmbH | Mounting device for hot gas or expansion nozzles for the connection of apparatus for air admission in order to eliminate caking or banking of material |
DE3841381C2 (en) | 1988-12-08 | 1997-08-14 | Agrichema Materialflusstechnik | Device for arranging an expansion nozzle of an air blast device in the boundary walls of reaction chambers |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0197306B1 (en) * | 1985-03-06 | 1990-09-12 | AGRICHEMA Materialflusstechnik GmbH | Device for the exchangeable fitting of operating elements directed towards the reaction enclosure |
FR2733168B1 (en) * | 1995-04-20 | 1997-06-27 | Financ De Gestion Soc | METHOD FOR MOUNTING A GAS INJECTION NOZZLE THROUGH A WALL AND MEANS FOR CARRYING OUT SAID METHOD |
DE29518283U1 (en) * | 1995-11-17 | 1996-01-04 | Agrichema Materialflußtechnik GmbH, 55257 Budenheim | Hot fire nozzle with exchangeable tube |
DE29822427U1 (en) * | 1998-12-16 | 1999-03-11 | Agrichema Materialflußtechnik GmbH, 55257 Budenheim | Exchange box with hot fire nozzle |
-
2000
- 2000-01-03 DE DE10000023A patent/DE10000023A1/en not_active Withdrawn
- 2000-12-18 TR TR2004/01330T patent/TR200401330T4/en unknown
- 2000-12-18 AT AT00127712T patent/ATE264797T1/en active
- 2000-12-18 DK DK00127712T patent/DK1112947T3/en active
- 2000-12-18 PT PT00127712T patent/PT1112947E/en unknown
- 2000-12-18 ES ES00127712T patent/ES2218056T3/en not_active Expired - Lifetime
- 2000-12-18 DE DE50006143T patent/DE50006143D1/en not_active Expired - Lifetime
- 2000-12-18 EP EP00127712A patent/EP1112947B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3841381C2 (en) | 1988-12-08 | 1997-08-14 | Agrichema Materialflusstechnik | Device for arranging an expansion nozzle of an air blast device in the boundary walls of reaction chambers |
EP0555725A1 (en) | 1992-02-11 | 1993-08-18 | AGRICHEMA Materialflusstechnik GmbH | Mounting device for hot gas or expansion nozzles for the connection of apparatus for air admission in order to eliminate caking or banking of material |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2139567A1 (en) * | 2007-04-27 | 2010-01-06 | Martin Engineering Company | Removable nozzle for use with air cannons and aerators |
EP2139567A4 (en) * | 2007-04-27 | 2010-12-29 | Martin Eng Co | Removable nozzle for use with air cannons and aerators |
US8236235B2 (en) | 2007-04-27 | 2012-08-07 | Martin Engineering Company | Removable nozzle for use with air cannons and aerators and method for replacing same |
DE202014002625U1 (en) | 2014-03-25 | 2015-03-27 | Agrilux Beteiligungs Gmbh | Blow-out system for air blast equipment |
EP2924382A1 (en) | 2014-03-25 | 2015-09-30 | Agrilux Beteiligungs GmbH | Air purge system for air impact devices |
Also Published As
Publication number | Publication date |
---|---|
ES2218056T3 (en) | 2004-11-16 |
DK1112947T3 (en) | 2004-07-12 |
ATE264797T1 (en) | 2004-05-15 |
DE50006143D1 (en) | 2004-05-27 |
TR200401330T4 (en) | 2004-07-21 |
DE10000023A1 (en) | 2001-07-05 |
PT1112947E (en) | 2004-09-30 |
EP1112947A3 (en) | 2002-07-24 |
EP1112947B1 (en) | 2004-04-21 |
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