DE3030714A1 - Prefabricated and prestressed wall element - for combustion chamber of kiln used for baking ceramic mouldings - Google Patents
Prefabricated and prestressed wall element - for combustion chamber of kiln used for baking ceramic mouldingsInfo
- Publication number
- DE3030714A1 DE3030714A1 DE19803030714 DE3030714A DE3030714A1 DE 3030714 A1 DE3030714 A1 DE 3030714A1 DE 19803030714 DE19803030714 DE 19803030714 DE 3030714 A DE3030714 A DE 3030714A DE 3030714 A1 DE3030714 A1 DE 3030714A1
- Authority
- DE
- Germany
- Prior art keywords
- wall element
- prefabricated
- combustion chamber
- tie rods
- tie
- 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
Links
- 239000000919 ceramic Substances 0.000 title claims description 7
- 238000002485 combustion reaction Methods 0.000 title claims description 5
- 238000000465 moulding Methods 0.000 title 1
- 239000011449 brick Substances 0.000 claims abstract description 7
- 238000010304 firing Methods 0.000 claims description 6
- 241001274613 Corvus frugilegus Species 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000035882 stress Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
- F27D1/06—Composite bricks or blocks, e.g. panels, modules
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
- F27B9/32—Casings
- F27B9/34—Arrangements of linings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
Vorgefertigtes Mauerelement für den Brennraum einesPrefabricated wall element for the combustion chamber of a
Tunnelofens zum Brennen keramischer Formlinge Die Erfindung bezieht sich auf ein vorgefertigtes Mauerelement für den Brennraum eines Tunnelofens zum Brennen keramischer Formlinge.Tunnel furnace for firing ceramic bricks The invention relates on a prefabricated wall element for the combustion chamber of a tunnel kiln Firing of ceramic bricks.
Aus der DE-AS 26 05 925 ist ein vorgefertigtes Mauerelement bekannt, welches aus einem Rahmen aus mechanisch hochfestem Material besteht, dessen Öffnung feuerseitig konvergiert. Der Rahmen ist mit formschlüssig sitzenden Füllsteinen von identischen Einbaumaßen aus hochfeuerfestem Material ausgefüllt.From DE-AS 26 05 925 a prefabricated wall element is known, which consists of a frame made of mechanically high-strength material, the opening of which converges on the fire side. The frame is made with form-fitting filler stones Filled with identical installation dimensions from highly refractory material.
Die Füllsteine werden außenseitig durch über die Füllsteine verlaufende Halteschienen gehalten, die beiderseits in Ankern verteilt sind, welche im Rahmen eingelassen sind. Als Monierung befindet sich Im Rahmen ein als Kühlmittelrohr ausgebildetes Stahlrohr.The filling stones are on the outside by running over the filling stones Holding rails held, which are distributed on both sides in anchors, which in the frame are let in. A coolant pipe is located in the frame as a mount Steel pipe.
Nachteilig ist hierbei die Verbindung zwischen Stahl und feuerfestem Material. Wegen der unterschiedlichen Ausdehnung von Stahl und feuerfestem Material ist eine starre Verbindung zwischen diesen beiden Materialien nicht möglich. Da der Stahl bei Ofentemperatur eine höhere Ausdehnung als das feuerfeste Material besitzt, kommt es zu Rissebildung im feuerfesten Material. Außerdem besteht die Gefahr der Rissebildung beim Transport durch auftretende Biegezugspannungen.The disadvantage here is the connection between steel and refractory Material. Because of the different expansion of steel and refractory material a rigid connection between these two materials is not possible. There the steel has a higher expansion at furnace temperature than the refractory material cracks develop in the refractory material. There is also the Risk of cracks forming during transport due to bending tensile stresses.
Die Aufgabe der Erfindung besteht nun darin, ein vorgefertigtes Mauerelement für den Brennraum eines Tunnelofens zum Brennen keramischer Formlinge zu schaffen, bei dem Rissebildungen beim Transport durch auftretende Biegezugspannungen vermieden werden sollen. AuQerdem soll ein dichtes Mauerelement entstehen, bei dem Rissebildungen infolge Wärmespannungen unmöglich sind.The object of the invention is now to provide a prefabricated wall element for the combustion chamber of a tunnel kiln for firing ceramic bricks, Avoided cracks during transport due to bending tensile stresses should be. In addition, a dense wall element should be created in which cracks form are impossible due to thermal stresses.
Diese Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Patentanspruchs aufgeführten Merkmale gelöst.This object is achieved according to the invention by the in the characterizing part of the claim listed features solved.
Die Mauerelemente werden nach der Fertigung durch die nicht mit dem Mauerelement in Verbindung stehenden Zugstangen so weit vorgespannt, daß beim Transport auftretende Zugspannungen aus Biegung durch Vorspannung überdrückt werden. Die Vorspannung kann während des Ofenbetriebes durch Anziehen der Schraubenmuttern bzw. Tellerfedern korrigiert und den auftretenden Wärmespannungen angepaßt werden.The wall elements are not with the after production by the Wall element connected tie rods so far biased that during transport occurring tensile stresses from bending are suppressed by prestressing. The bias can be done while the furnace is in operation by tightening the screw nuts or disc springs corrected and adapted to the thermal stresses occurring.
Damit werden die Nachteile der unterschiedlichen Ausdehnung zwischen stahl- und feuerfestem Material berücksichtigt, so daß Rissebildungen vermieden werden, da das feuerfeste Material durch die Zugstangen immer unter Druck gehalten wird. Sollten doch waagerechte Risse auftreten, so werden diese infolge der durch die Zugstangen vermittelten Vorspannung ständig überdrückt, so daß das Mauerelement nach außen dicht bleibt.This eliminates the disadvantages of the different expansion between steel and refractory material taken into account, so that cracking is avoided as the refractory material is always kept under pressure by the tie rods will. Should horizontal cracks occur, these will be due to the the tie rods imparted bias constantly overpressed, so that the wall element remains tight to the outside.
In der Zeichnung ist ein Ausführungsbeispiel des Gegenstandes der Erfindung näher veranschaulicht.In the drawing is an embodiment of the subject matter of Invention illustrated in more detail.
In dieser zeigen: Fig. 1 eine Ansicht des Mauerelements auf die Feuerseite, Fig. 2 einen Schnitt gemäß der Linie II-II in Fig. 1, Fig. 5 einen Querschnitt durch einen Tunnelofen, der mit erfindungsgemäßen Mauerelementen versehen ist.These show: FIG. 1 a view of the wall element on the fire side, FIG. 2 shows a section along the line II-II in FIG. 1, FIG. 5 shows a cross section through a tunnel furnace which is provided with wall elements according to the invention.
Das Mauerelement 1 besteht aus feuerfestem Material 2 in Form von Steinen, die auf einem Fußträger 3 aufgemauert sind. Es ist auch möglich, Gießmasse zu verwenden, die in einer Form gegossen wird.The wall element 1 consists of refractory material 2 in the form of Stones that are walled up on a foot support 3. It is also possible to use casting compound that is poured in a mold.
Als Abschluß ist das Mauerelement 1 mit einem Deckträger 4 versehen. Der Fußträger 5 und der Deckträger 4 sind durch Zugstangen 5 miteinander verbunden. Die Zugstangen 5 führen durch im Mauerelement 1 befindliche Kanäle 6 und stehen somit mit dem feuerfestem Material 2 nicht in Verbindung. Die Zugstangen 5 sind im Bereich des Fußträgers 5 mit Schraubenmuttern 7 und Tellerfedern 8 versehen.As a conclusion, the wall element 1 is provided with a cover beam 4. The foot support 5 and the deck support 4 are connected to one another by tie rods 5. The tie rods 5 lead through channels 6 located in the wall element 1 and stand thus not in connection with the refractory material 2. The tie rods 5 are Provided with screw nuts 7 and disc springs 8 in the area of the foot support 5.
Durch Anziehen der Schraubenmuttern 7 werden die Zugstangen 5 unter Vorspannung gehalten, so daß der Fußträger 5 und der Deckträger 4 einen Druck auf das Mauerelement 1 ausUben.und das feuerfeste Material 2 unter Druckspannung hält.By tightening the nuts 7, the tie rods 5 are below Pre-tension held so that the foot support 5 and the deck support 4 apply pressure the wall element 1 ausUben.und holds the refractory material 2 under compressive stress.
Die Mauerelemente 1 werden bei einem Tunnelofen 9 zum Brennen keramischer Formlinge verwandt, deren Ofenwände 10 auf einem im Abstand vom Boden angeordaieten, aus Schienen 11 bestehenden Gestell 12 aufgestellt sind. Durch die auf Abstand zueinander angeordneten Schienen 12 können die Schraubenmuttern 7 erreicht und entsprechend der in den Zugstangen 5 zu herrschenden Vorspannung angezogen werden.The wall elements 1 are ceramic in a tunnel furnace 9 for firing Related briquettes, the furnace walls 10 of which are arranged on a spaced from the floor, Frame 12 consisting of rails 11 are set up. By keeping at a distance from each other arranged rails 12 can reach the nuts 7 and accordingly the bias to be tightened in the tie rods 5.
Durch am Deckträger 4 angeordnete Halter 15 kann das Mauerelement 1 transportiert werden.By arranged on the deck support 4 holder 15, the wall element 1 can be transported.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803030714 DE3030714C2 (en) | 1980-08-14 | 1980-08-14 | Prefabricated wall element for the combustion chamber of a tunnel kiln for firing ceramic bricks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803030714 DE3030714C2 (en) | 1980-08-14 | 1980-08-14 | Prefabricated wall element for the combustion chamber of a tunnel kiln for firing ceramic bricks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3030714A1 true DE3030714A1 (en) | 1982-02-18 |
| DE3030714C2 DE3030714C2 (en) | 1985-10-24 |
Family
ID=6109581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19803030714 Expired DE3030714C2 (en) | 1980-08-14 | 1980-08-14 | Prefabricated wall element for the combustion chamber of a tunnel kiln for firing ceramic bricks |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3030714C2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512738A (en) * | 1982-11-19 | 1985-04-23 | Societe D'etudes Et De Constructions Electriques Et Mecaniques Secem | High-temperature kilns |
| DE3807243C1 (en) * | 1987-04-24 | 1988-09-08 | Voest-Alpine Ag, Linz, At | Suspension device for gas-permeable partition walls |
| AT389000B (en) * | 1986-05-22 | 1989-09-25 | Voest Alpine Ag | Suspension device for gas-permeable partition walls or built- in components in industrial furnaces |
| EP1191285A1 (en) * | 2000-09-22 | 2002-03-27 | Siemens Aktiengesellschaft | Heat shield panel, combustion chamber with inner lining and a gas turbine |
| WO2005090613A1 (en) * | 2004-03-17 | 2005-09-29 | Technological Resources Pty Limited | Direct smelting plant |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3714753A1 (en) * | 1987-05-02 | 1988-11-17 | Plibrico Co Gmbh | Cassette-shaped lining for industrial furnaces |
-
1980
- 1980-08-14 DE DE19803030714 patent/DE3030714C2/en not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| NICHTS-ERMITTELT * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512738A (en) * | 1982-11-19 | 1985-04-23 | Societe D'etudes Et De Constructions Electriques Et Mecaniques Secem | High-temperature kilns |
| AT389000B (en) * | 1986-05-22 | 1989-09-25 | Voest Alpine Ag | Suspension device for gas-permeable partition walls or built- in components in industrial furnaces |
| DE3807243C1 (en) * | 1987-04-24 | 1988-09-08 | Voest-Alpine Ag, Linz, At | Suspension device for gas-permeable partition walls |
| EP1191285A1 (en) * | 2000-09-22 | 2002-03-27 | Siemens Aktiengesellschaft | Heat shield panel, combustion chamber with inner lining and a gas turbine |
| WO2002025173A1 (en) * | 2000-09-22 | 2002-03-28 | Siemens Aktiengesellschaft | Heat-shield brick, combustion chamber comprising an internal combustion chamber lining and a gas turbine |
| US6832484B2 (en) | 2000-09-22 | 2004-12-21 | Siemens Aktiengesellschaft | Heat-shield brick, combustion chamber comprising an internal, combustion chamber lining and a gas turbine |
| WO2005090613A1 (en) * | 2004-03-17 | 2005-09-29 | Technological Resources Pty Limited | Direct smelting plant |
| US8156709B2 (en) | 2004-03-17 | 2012-04-17 | Technological Resources Pty. Limited | Direct smelting plant |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3030714C2 (en) | 1985-10-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |