EP0522290B1 - Levelling door - Google Patents
Levelling door Download PDFInfo
- Publication number
- EP0522290B1 EP0522290B1 EP92109436A EP92109436A EP0522290B1 EP 0522290 B1 EP0522290 B1 EP 0522290B1 EP 92109436 A EP92109436 A EP 92109436A EP 92109436 A EP92109436 A EP 92109436A EP 0522290 B1 EP0522290 B1 EP 0522290B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- levelling
- sealing
- door
- hatch
- leveling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 38
- 239000012528 membrane Substances 0.000 claims description 16
- 239000000571 coke Substances 0.000 claims description 9
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011272 tar condensate Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B25/00—Doors or closures for coke ovens
- C10B25/02—Doors; Door frames
- C10B25/16—Sealing; Means for sealing
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B25/00—Doors or closures for coke ovens
- C10B25/02—Doors; Door frames
- C10B25/06—Doors; Door frames for ovens with horizontal chambers
Definitions
- the invention relates to a leveling door for sealing the leveling opening of a coke oven door, in which a flexible sealing element can be pressed against a sealing surface surrounding the leveling opening.
- DE-A-24 26 476 has therefore already proposed a leveling door which has a shell-shaped closure element made of a material with spring-like properties.
- the flexible sealing edge of this closure element is pressed against the sealing surface surrounding the leveling opening by a force acting in the middle.
- the disadvantage of this construction can be seen in the fact that on the one hand the production of such a cup-shaped closure element is relatively expensive and on the other hand it is not possible to adequately adapt to different conditions at the sealing edge or the sealing surface due to the force acting only in the middle.
- GB-A-2051851 discloses a leveling door in which a sealing frame is pressed onto the door frame by means of spring elements.
- the aim of the present invention is therefore to provide a leveling door which has a highly elastic sealing system, by means of which all unevenness in the sealing surface surrounding the leveling opening, which is to be expected during operation of the coke oven battery, can be compensated for independently.
- the leveling door according to the invention is intended to ensure permanent sealing of the leveling opening even when the opening and closing process is actuated automatically, and it is also intended to be distinguished by the simplest possible, inexpensive and maintenance-friendly construction.
- FIG. 1 shows a side view of the leveling door according to the invention, the upper half being shown as a longitudinal section.
- the cast or wrought-iron leveling door body 1 is fastened at its upper end via the joint 2 to the coke oven door body 3 so that it can pivot upwards.
- the leveling door body 1 can in practice also in the manner Coke oven door body 3 are attached so that it is pivotable to the side or down.
- the membrane sheet 4 covering the entire leveling opening 15 and the heat protection shield 5 are fastened to the leveling door body 1.
- the membrane sheet 4 is made of highly elastic stainless steel and has a thickness between 1.5 and 3.0 mm.
- the membrane sheet 4 and the heat shield 5 are fastened in the present exemplary embodiment in the middle of the leveling door body 1 via the screw connections 16, the plug sleeves 17 ensuring a sufficient distance between the membrane sheet 4 and the heat shield 5, so that the elasticity of the membrane sheet 4 is not impaired becomes.
- the type of attachment of membrane sheet 4 and heat shield 5 shown allows, if necessary, a quick and easy replacement of both parts.
- the membrane sheet 4 has a circumferential sealing frame 8 which is screwed onto the membrane sheet 4.
- the sealing frame 8 can in this case be composed of four sealing strips 9 surrounding the four sides of the membrane sheet 4, which are welded to form a continuous frame.
- the sealing strips 9 of the sealing frame 8 should rest completely on the sealing surface 18 surrounding the leveling opening 15 when the leveling door is closed, in order to ensure the required sealing effect.
- the contact pressure required for this is provided by the spring-loaded pressing elements 10, which are distributed over the entire circumference of the sealing frame 8.
- Several pressing elements 10 can be combined into a unit via the connecting plate 19 and fastened to the leveling door body 1 via plug pins 11. This fastening system enables the force of the spring elements 12 to be set precisely, via the Tappet 13 act on the sealing strips 9 of the sealing frame 8.
- the deflection of the membrane sheet 4 is limited by a corresponding adjustment of the lock nuts 14 at the ends of the tappets 13.
- the closed leveling door is locked by means of the lever 6, which presses against the sash 7 attached to the coke oven door body 3.
- another locking mechanism can also be used here.
- the leveling door according to the invention ensures a good seal against coking plant raw gas emissions under all operating conditions.
- the door is also characterized by a simple, weight-saving and, at the same time, maintenance-friendly design with high operational reliability.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
Die Erfindung betrifft eine Planiertür zum Abdichten der Planieröffnung einer Koksofentür, bei der ein flexibles Dichtelement an eine die Planieröffnung umgebende Dichtungsfläche anpreßbar ist.The invention relates to a leveling door for sealing the leveling opening of a coke oven door, in which a flexible sealing element can be pressed against a sealing surface surrounding the leveling opening.
Während der Endphase des Füllvorganges der Ofenkammern von Koksofenbatterien ist es erforderlich, die Höhe der Kohleschüttung in der jeweils befüllten Ofenkammer zu vergleichmäßigen. Dies geschieht mit Hilfe der auf der Koksausdrückmaschine angeordneten Planierstange. Um diese in die Ofenkammer einführen und dort hin- und herbewegen zu können, ist in der auf der Maschinenseite befindlichen Koksofentür im Bereich des Gassammelraumes eine Planieröffnung vorgesehen, die mit einer Planiertür verschlossen wird, sobald die Planierstange aus der Ofenkammer entfernt worden ist. Damit die während des Verkokungsprozesses entstehenden gasförmigen Produkte nicht unkontrolliert entweichen können, muß dafür gesorgt werden, daß die Planieröffnung durch die Planiertür ausreichend dicht verschlossen wird.During the final phase of the filling process of the furnace chambers of coke oven batteries, it is necessary to even out the amount of coal in the furnace chamber that is filled. This is done with the help of the leveling bar arranged on the coke pushing machine. In order to be able to insert it into the furnace chamber and to move it back and forth, a leveling opening is provided in the coke oven door on the machine side in the area of the gas collecting space, which is closed with a leveling door as soon as the leveling rod has been removed from the furnace chamber. So that the gaseous products formed during the coking process cannot escape in an uncontrolled manner, it must be ensured that the leveling opening is sealed sufficiently tightly by the leveling door.
Bei älteren Planiertürkonstruktionen wurde die erforderliche Abdichtung mit Hilfe von sogenannten Hammerschlagleisten vorgenommen, die mittels Klemmschrauben an den Rändern des Türkörpers befestigt sind und durch Hammerschläge auf einer die Planieröffnung umgebenden Dichtungsfläche zur Auflage gebracht wurden. Dieses vielfach als "Eisen auf Eisen" bezeichnete Dichtungsprinzip ist jedoch außerordentlich wartungsintensiv und hinsichtlich seiner Dichtungswirkung nicht immer befriedigend. Es arbeitet nur dann einigermaßen einwandfrei, wenn einerseits die Dichtungsflächen sorgfältig sauber gehalten werden und andererseits die Temperaturlage der Dichtung die Bildung ausreichender Mengen an Teerkondensaten an den Dichtflächen als Abschluß gestattet.In older bulldozer door constructions, the necessary sealing was carried out with the help of so-called hammer blow strips, which are fastened to the edges of the door body by means of clamping screws and were brought into contact with hammer seals on a sealing surface surrounding the bulldozer opening. This sealing principle, often referred to as "iron on iron", is extremely maintenance-intensive and is not always satisfactory with regard to its sealing effect. It only works reasonably flawless if, on the one hand, the sealing surfaces are kept carefully clean and, on the other hand, the temperature of the seal permits the formation of sufficient quantities of tar condensates on the sealing surfaces as a conclusion.
In der DE-A-24 26 476 ist deshalb bereits eine Planiertür vorgeschlagen worden, die ein schalenförmiges Verschlußelement aus einem Werkstoff mit federähnlichen Eigenschaften aufweist. Der flexible Dichtrand dieses Verschlußelementes wird dabei durch eine in der Mitte einwirkende Kraft gegen die die Planieröffnung umgebende Dichtungsfläche gepreßt. Der Nachteil dieser Konstruktion ist darin zu sehen, daß einerseits die Herstellung eines derartigen schalenförmigen Verschlußelementes relativ teuer ist und andererseits durch die nur in der Mitte einwirkende Kraft eine ausreichende Anpassung an unterschiedliche Bedingungen am Dichtrand bzw. der Dichtungsfläche nicht möglich ist.DE-A-24 26 476 has therefore already proposed a leveling door which has a shell-shaped closure element made of a material with spring-like properties. The flexible sealing edge of this closure element is pressed against the sealing surface surrounding the leveling opening by a force acting in the middle. The disadvantage of this construction can be seen in the fact that on the one hand the production of such a cup-shaped closure element is relatively expensive and on the other hand it is not possible to adequately adapt to different conditions at the sealing edge or the sealing surface due to the force acting only in the middle.
GB-A-2051851 offenbart eine Planiertür, bei der ein Dichtrahmen mittels Federelementen an den Türrahmen gepreßt wird.GB-A-2051851 discloses a leveling door in which a sealing frame is pressed onto the door frame by means of spring elements.
Ziel der vorliegenden Erfindung ist es daher, eine Planiertür zu schaffen, die ein hochelastisches Dichtsystem aufweist, durch das alle während des Betriebes der Koksofenbatterie zu erwartenden Unebenheiten der die Planieröffnung umgebenden Dichtungsfläche selbständig ausgeglichen werden können. Die erfindungsgemäße Planiertür soll dabei auch bei einer automatischen Betätigung des Öffnungs- und Schließvorganges eine dauerhafte Abdichtung der Planieröffnung gewährleisten, und sie soll sich ferner durch eine möglichst einfache, kostengünstige und wartungsfreundliche Konstruktion auszeichnen.The aim of the present invention is therefore to provide a leveling door which has a highly elastic sealing system, by means of which all unevenness in the sealing surface surrounding the leveling opening, which is to be expected during operation of the coke oven battery, can be compensated for independently. The leveling door according to the invention is intended to ensure permanent sealing of the leveling opening even when the opening and closing process is actuated automatically, and it is also intended to be distinguished by the simplest possible, inexpensive and maintenance-friendly construction.
Die der Lösung dieser Aufgabe dienende Planiertür der eingangs genannten Art ist erfindungsgemäß gekennzeichnet durch die Kombination folgender Merkmale:
- a) daß an einem guß- oder schmiedeeisernen Planiertürkörper auf der der Planieröffnung zugewandten Seite ein die gesamte Planieröffnung abdeckendes Membranblech aus Edelstahl befestigt ist, das an seinen Kanten einen umlaufenden Dichtungsrahmen aufweist,
- b) daß auf den Dichtungsrahmen federbelastete Andrückelemente einwirken, die über den gesamten Umfang des Dichtungsrahmens verteilt sind,
- c) daß die Andrückelemente mit Steckbolzen am Planiertürkörper befestigt sind,
und - d) daß auf der der Planieröffnung zugewandten Seite vor dem Membranblech ein auswechselbares Hitzeschutzschild angeordnet ist.
- a) that a diaphragm sheet made of stainless steel covering the entire leveling opening is fastened to a cast-iron or wrought-iron leveling door body on the side facing the leveling opening and has a circumferential sealing frame at its edges,
- b) that spring-loaded pressure elements act on the sealing frame and are distributed over the entire circumference of the sealing frame,
- c) that the pressing elements are fastened to the leveling door body with plug pins,
and - d) that an exchangeable heat protection shield is arranged on the side facing the leveling opening in front of the membrane sheet.
Weitere Einzelheiten der erfindungsgemäßen Konstruktion ergeben sich aus den vorliegenden Unteransprüchen und sollen nachfolgend an Hand des in der Abbildung dargestellten Ausführungsbeispiels erläutert werden. Die Abbildung zeigt hierbei eine Seitenansicht der erfindungsgemäßen Planiertür, wobei die obere Hälfte als Längsschnitt dargestellt ist.Further details of the construction according to the invention result from the present subclaims and are to be explained below on the basis of the exemplary embodiment shown in the figure. The figure shows a side view of the leveling door according to the invention, the upper half being shown as a longitudinal section.
Bei der in der Abbildung dargestellten Ausführungsform ist der guß- oder schmiedeeiserne Planiertürkörper 1 an seinem oberen Ende über das Gelenk 2 am Koksofentürkörper 3 nach oben schwenkbar befestigt. Selbstverständlich kann der Planiertürkörper 1 in der Praxis auch in der Weise am Koksofentürkörper 3 befestigt werden, daß er nach der Seite oder nach unten schwenkbar ist. Auf der der Planieröffnung 15 zugewandten Seite sind am Planiertürkörper 1 das die gesamte Planieröffnung 15 abdeckende Membranblech 4 sowie davor das Hitzeschutzschild 5 befestigt. Das Membranblech 4 ist aus hochelastischem Edelstahl gefertigt und weist eine Stärke zwischen 1,5 und 3,0 mm auf. Die Befestigung von Membranblech 4 und Hitzeschutzschild 5 erfolgt im vorliegenden Ausführungsbeispiel in der Mitte des Planiertürkörpers 1 über die Schraubverbindungen 16, wobei die Steckhülsen 17 für einen ausreichenden Abstand zwischen dem Membranblech 4 und dem Hitzeschutzschild 5 sorgen, so daß die Elastizität des Membranbleches 4 nicht beeinträchtigt wird. Die dargestellte Art der Befestigung von Membranblech 4 und Hitzeschutzschild 5 erlaubt im Bedarfsfalle ein rasches und problemloses Auswechseln beider Teile. An den Kanten weist das Membranblech 4 einen umlaufenden Dichtungsrahmen 8 auf, der an das Membranblech 4 angeschraubt ist. Der Dichtungsrahmen 8 kann hierbei aus vier, die vier Seiten des Membranbleches 4 umgebenden Dichtleisten 9 zusammengesetzt sein, die zu einem durchgehenden Rahmen verschweißt werden. Wie aus der Abbildung zu erkennen ist, sollen die Dichtleisten 9 des Dichtungsrahmens 8 bei geschlossener Planiertür auf der die Planieröffnung 15 umgebenden Dichtungsfläche 18 vollständig aufliegen, um so die erforderliche Dichtwirkung sicherzustellen. Die hierfür erforderliche Anpreßkraft wird durch die federbelasteten Andrückelemente 10 zur Verfügung gestellt, die über den gesamten Umfang des Dichtungsrahmens 8 verteilt sind. Mehrere Andrückelemente 10 können dabei über die Verbindungsplatte 19 zu einer Einheit zusammengefaßt und über Steckbolzen 11 am Planiertürkörper 1 befestigt werden. Dieses Befestigungssystem ermöglicht eine genaue Krafteinstellung der Federelemente 12, die über die Stößel 13 auf die Dichtleisten 9 des Dichtungsrahmens 8 einwirken. Um ein eventuelles Überdehnen des Membranbleches 4 durch die Federelemente 12 zu verhindern, wird die Auslenkung des Membranbleches 4 durch eine entsprechende Einstellung der Kontermuttern 14 an den Enden der Stößel 13 begrenzt. Die geschlossene Planiertür wird im vorliegenden Ausführungsbeispiel vermittels des Hebels 6, der gegen den am Koksofentürkörper 3 befestigten Vorreiber 7 drückt, verriegelt. Selbstverständlich kann hier aber auch ein anderer Verriegelungsmechanismus zur Anwendung gelangen.In the embodiment shown in the figure, the cast or wrought-iron leveling
Die erfindungsgemäße Planiertür gewährleistet unter allen Betriebsbedingungen eine gute Abdichtung gegen Kokerei-Rohgasemissionen. Die Tür zeichnet sich dabei außerdem durch eine einfache gewichtsparende sowie gleichzeitig wartungsfreundliche Bauweise bei hoher Betriebssicherheit aus.The leveling door according to the invention ensures a good seal against coking plant raw gas emissions under all operating conditions. The door is also characterized by a simple, weight-saving and, at the same time, maintenance-friendly design with high operational reliability.
Claims (4)
- Levelling door for sealing the levelling hatch of a coke oven door, in which a flexible sealing member is able to be pressed against a sealing surface surrounding the levelling hatch, in which, on the side facing the levelling hatch (15), a cast-iron or wrought-iron levelling door body (1) is provided with a stainless steel membrane plate (4) attached to it, which covers the entire levelling hatch (15) and is equipped along its edges with a peripheral sealing frame (8), characterized by the combination of the following features:a) that the sealing frame (8) is acted on by spring-loaded compressive members (10), distributed over the entire circumference of the sealing frame (8),b) that the compressive members (10) are attached to the levelling door body (1) by means of bolts (11), andc) that, on the side facing the levelling hatch (15), a replaceable heat shield (5) is arranged in front of the membrane plate (4).
- Levelling door according to Claim 1, characterized in that the sealing frame (8) is made up of four sealing strips (9) which surround the four sides of the membrane plate (4) and are welded together.
- Levelling door according to Claims 1 and 2, characterized in that a plurality of compressive members (10) are joined together to form a single unit and are attached as a unit to the levelling door body (1).
- Levelling door according to Claims 1 to 3, characterized in that the spring-loading of the membrane plate (4) exerted by the compressive members (10) is restricted by suitable adjustment of the counternuts (14) at the ends of the push-rods (13).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4122492 | 1991-07-06 | ||
| DE4122492A DE4122492A1 (en) | 1991-07-06 | 1991-07-06 | PLANING DOOR |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0522290A1 EP0522290A1 (en) | 1993-01-13 |
| EP0522290B1 true EP0522290B1 (en) | 1994-03-30 |
Family
ID=6435638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92109436A Expired - Lifetime EP0522290B1 (en) | 1991-07-06 | 1992-06-04 | Levelling door |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5306396A (en) |
| EP (1) | EP0522290B1 (en) |
| DE (2) | DE4122492A1 (en) |
| ES (1) | ES2051607T3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59407712D1 (en) * | 1994-12-17 | 1999-03-04 | Krupp Uhde Gmbh | Coke oven door unit with sealing membrane |
| US5720855A (en) * | 1996-05-14 | 1998-02-24 | Saturn Machine & Welding Co. Inc. | Coke oven door |
| DE19956939A1 (en) * | 1999-11-26 | 2001-05-31 | Eirich Maschf Gustav | Device and method for closing an emptying opening in a rotating container |
| DE10240248B4 (en) * | 2002-08-31 | 2005-04-14 | Rag Ag | Coke oven door with insulation and leveling door and use of same |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2442391A (en) * | 1944-02-24 | 1948-06-01 | Allied Chem & Dye Corp | Self-sealing leveller-door closure for coke ovens |
| US3567590A (en) * | 1969-01-21 | 1971-03-02 | Koppers Co Inc | Leveler door and operating mechanism |
| CA1021284A (en) * | 1973-09-06 | 1977-11-22 | Hugh B. Carr | Leveler door for coke ovens |
| US3990950A (en) * | 1973-09-06 | 1976-11-09 | Bloom Engineering Company, Inc. | Leveler door for coke ovens |
| DE2831512A1 (en) * | 1978-07-18 | 1980-01-31 | Dortmann & Juengst Gmbh | Coke oven leveller door seal - with absorbent ceramic fibre cords forming yielding seal ring |
| US4216062A (en) * | 1979-02-05 | 1980-08-05 | United States Steel Corporation | Sealing means for a coke oven chuck door |
| GB2051851B (en) * | 1979-07-05 | 1983-01-06 | Koritsu Kikai Kogyo Co Ltd | Leveller door for coke oven door |
| US4427494A (en) * | 1981-02-17 | 1984-01-24 | Krupp Wilputte Corporation | Chuck door for coke oven pusher side door and heat radiation shield |
| DE3131157A1 (en) * | 1981-08-06 | 1983-03-24 | Carl Still Gmbh & Co Kg, 4350 Recklinghausen | COOKING OVEN DOOR WITH PROFILE SEALING MEMBRANE |
| US4596197A (en) * | 1985-01-10 | 1986-06-24 | Raymond Kaiser Engineers Inc. | Coke oven door |
| JPH0788509B2 (en) * | 1987-02-16 | 1995-09-27 | 株式会社クボタ | Furnace lid sealing device |
| DE3818029A1 (en) * | 1988-05-27 | 1989-11-30 | Krupp Koppers Gmbh | Coke oven door |
-
1991
- 1991-07-06 DE DE4122492A patent/DE4122492A1/en not_active Withdrawn
-
1992
- 1992-05-18 US US07/885,169 patent/US5306396A/en not_active Expired - Lifetime
- 1992-06-04 ES ES92109436T patent/ES2051607T3/en not_active Expired - Lifetime
- 1992-06-04 DE DE92109436T patent/DE59200102D1/en not_active Expired - Lifetime
- 1992-06-04 EP EP92109436A patent/EP0522290B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59200102D1 (en) | 1994-05-05 |
| US5306396A (en) | 1994-04-26 |
| ES2051607T3 (en) | 1994-06-16 |
| DE4122492A1 (en) | 1993-01-07 |
| EP0522290A1 (en) | 1993-01-13 |
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