EP0173035B1 - Ascencion pipe cover - Google Patents

Ascencion pipe cover Download PDF

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Publication number
EP0173035B1
EP0173035B1 EP85108406A EP85108406A EP0173035B1 EP 0173035 B1 EP0173035 B1 EP 0173035B1 EP 85108406 A EP85108406 A EP 85108406A EP 85108406 A EP85108406 A EP 85108406A EP 0173035 B1 EP0173035 B1 EP 0173035B1
Authority
EP
European Patent Office
Prior art keywords
cover
ascension pipe
water seal
wall shell
rim
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
Application number
EP85108406A
Other languages
German (de)
French (fr)
Other versions
EP0173035A3 (en
EP0173035A2 (en
Inventor
Heinz Spindeler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Still Otto GmbH
Original Assignee
Still Otto GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Still Otto GmbH filed Critical Still Otto GmbH
Publication of EP0173035A2 publication Critical patent/EP0173035A2/en
Publication of EP0173035A3 publication Critical patent/EP0173035A3/en
Application granted granted Critical
Publication of EP0173035B1 publication Critical patent/EP0173035B1/en
Expired legal-status Critical Current

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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
    • C10B25/20—Lids or closures for charging holes
    • C10B25/22—Lids or closures for charging holes for ovens with vertical chambers
    • 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
    • C10B27/00—Arrangements for withdrawal of the distillation gases
    • C10B27/06—Conduit details, e.g. valves

Definitions

  • the invention relates to a riser closure for closing the upper opening of a circular or oval riser with a cross section, which is arranged on the furnace top of a coke oven and via which raw gas formed during the coking of the coal in the coke oven chambers is drawn off and sucked into the template, whereby the riser pipe closure consists of a bell-like upper cover and an inner cover and the peripheral edge of the upper cover in the closed position is immersed in a water cup formed at the upper edge of the riser pipe, while the edge of the inner cover rests on an inner contact surface of the riser pipe.
  • the invention has for its object to make a riser closure easier on the one hand and on the other hand to prevent the inner cover from sticking to its seat, and to reduce or completely eliminate the maintenance and cleaning work previously required.
  • the invention consists in that the inner cover consists of a curved sheet metal, has the shape of a spherical jacket section with a curvature directed towards the inside of the ascending pipe and rests with its circumferential edge on a sealing surface which passes through the upper edge an annular wall is formed, which is arranged at a distance from the water cup, is enclosed by this and the upper edge of which lies above the bottom of the water cup.
  • a riser pipe 1 which is provided with a circumferential flange 2, on which the closure device is fastened with screws 3.
  • This consists of a water cup with a bottom 4, an outer wall 5 and an inner wall 6.
  • the bottom 4 is extended to the interior of the riser and is provided with a further annular wall 7 which is enclosed by the water cup and is arranged at a distance from the inner wall 6 concentrically to the opening of the riser.
  • the water cup with the bottom 4 and the two walls 5 and 6 and the annular wall 7 consist of one piece, preferably of a cast construction. It is also possible to loosely place the ring-shaped wall 7 in the form of a ring on the inwardly drawn-out floor of the water cup and to position it concentrically with the riser pipe at some points evenly distributed over the circumference by inserting spacers between the inner wall 6 and the ring.
  • the closure member which can be pivoted from the position shown in Figure 1 into the open position shown in Figure 3, consists of a bell-shaped upper cover 8, the peripheral edge, as can be seen from Figure 1, in the closed position in the water or another suitable liquid filled water cup 9 so that there is a gas-tight seal.
  • the inner cover 10 according to the invention consists of a curved sheet which has the shape of a * Kugelmanteiabschnit- and is fastened within the top cover so that the curvature in the closed position is directed downwards, ie towards the interior of the riser pipe 1.
  • the inner cover 10 is at a distance attached from the inner surface of the top cover 8 by means of a tubular holder 11 which is connected in the middle, for example by welding, to the inside cover and is attached at its other end in the central region of the top cover.
  • the spacer 11 is provided with a flange which is screwed to the top cover.
  • the invention provides for the upper cover with the inner cover attached to it via a universal joint 12 with the pivot lever 13 of the Linkage linkage 14.
  • a universal joint 12 with the pivot lever 13 of the Linkage linkage 14.
  • the pivot point of the pivot mechanism is designated, which contains a counterweight 16 in the usual way in order to reduce the force required to lift the lid.
  • a counterweight 16 in the usual way in order to reduce the force required to lift the lid.
  • three screws are designated, with which the mobility of the upper cover is reduced to a necessary minimum.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Coke Industry (AREA)
  • Gasket Seals (AREA)
  • Joints Allowing Movement (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Description

Die Erfindung bezieht sich auf einen Steigerohrverschluß zum Verschließen der oberen Öffnung eines im Querschnitt kreisförmigen oder ovalen Steigerohres, das auf der Ofendecke eines Koksofens angeordnet ist und über das bei der Verkokung der Kohle in den Koksofenkammern entstehendes Rohgas abgezogen und in die Vorlage abgesaugt wird, wobei der Steigerohrverschluß aus einem glockenartigen Oberdeckel und einem Innendeckel besteht und der umlaufende Rand des Oberdeckeis in der Schließstellung in eine am oberen Rand des Steigerohres ausgebildete Wassertasse eintaucht, während der Rand des Innendeckels auf einer inneren Auflagefläche des Steigerohres aufliegt.The invention relates to a riser closure for closing the upper opening of a circular or oval riser with a cross section, which is arranged on the furnace top of a coke oven and via which raw gas formed during the coking of the coal in the coke oven chambers is drawn off and sucked into the template, whereby the riser pipe closure consists of a bell-like upper cover and an inner cover and the peripheral edge of the upper cover in the closed position is immersed in a water cup formed at the upper edge of the riser pipe, while the edge of the inner cover rests on an inner contact surface of the riser pipe.

Bei derartigen Steigerohrverschlüssen haben sich Probleme dadurch ergeben, daß der aus Gußeisen bestehende Innendeckel sehr schwer war und große Gegengewichte für das Betätigungsgestänge erforderte. Ferner ließ sich nicht vermeiden, daß sich bei den bekannten Verschlüssen im Bereich des Deckelsitzes Kondensat- und Verkrackungsrückstände ansammelten, so daß der Innendeckel anbackte und eine Handbetätigung nur unter großem Kraftaufwand oder unter Zuhilfenahme einer Brechstange möglich war.Problems with such riser closures have arisen from the fact that the cast iron inner cover was very heavy and required large counterweights for the actuating linkage. Furthermore, it could not be avoided that condensate and cracking residues accumulated in the known closures in the area of the lid seat, so that the inner lid baked on and manual operation was only possible with great effort or with the aid of a crowbar.

Der Erfindung liegt die Aufgabe zugrunde, einen Steigerohrverschluß einerseits leichter auszubilden und andererseits ein Festbacken des Innendeckels auf seinem Sitz zu vermeiden, sowie den bisher erforderlichen Wartungs- und Reinigungsaufwand auf ein Minimum zu reduzieren bzw. ganz auszuschalten.The invention has for its object to make a riser closure easier on the one hand and on the other hand to prevent the inner cover from sticking to its seat, and to reduce or completely eliminate the maintenance and cleaning work previously required.

Ausgehend von einem Steigerohrverschluß der eingangs beschriebenen Art besteht die Erfindung darin, daß der Innendeckel aus einem gewölbten Blech besteht, cas die Form eines Kugelmantelabschnittes mit einer zum Inneren des Steigerohres gerichteten Wölbung hat und mit seinem umlaufenden Rand auf einer Dichtfläche aufliegt, die durch die Oberkante einer ringförmigen Wand gebildet ist, die mit Abstand von der Wassertasse angeordnet ist, von dieser umschlossen wird und deren Oberkante oberhalb des Bodens der Wassertasse liegt.Starting from an ascending pipe closure of the type described in the introduction, the invention consists in that the inner cover consists of a curved sheet metal, has the shape of a spherical jacket section with a curvature directed towards the inside of the ascending pipe and rests with its circumferential edge on a sealing surface which passes through the upper edge an annular wall is formed, which is arranged at a distance from the water cup, is enclosed by this and the upper edge of which lies above the bottom of the water cup.

Weitere Merkmale der Erfindung ergeben sich aus den Unteransprüchen.Further features of the invention emerge from the subclaims.

Praktische Versuche mit einem Steigerohrverschluß gemäß der Erfindung haben ergeben, daß selbst nach 6-wöchigem Betrieb keine störenden Kondensatrückstände, die zu einem Festbacken des innendecke'.s führen können, aufgetreten sind. Dieses Ergebnis ist insofern überraschend, als die Steigerohrverschlüsse bisher nach spätestens einigen Tagen gereinigt werden mußten. Die Anmelderin führt dies unter anderem darauf zurück, daß der Innendeckel als nach unten gewölbte Scheibe ausgebildet ist und an der Dichtfläche nur eine Kantenberührung vorliegt. Dadurch kann sich das an dem Innendeckel anfallende Kondensat nicht mehr im Bereich des Dichtrandes ansammein. sondern trieft zu dem unteren tiefsten Punkt des Deckels und sammelt sich dort an bis es durch das Steigerohr in den Ofen tropft. Soweit sich an dieser Stelle filigranähnliche Verkrackungsrückstände bilden, fallen diese infolge der bei der Betätigung des Deckels auftretenden Erschütterungen in den Ofen zurück. Die Bildung des Kondensates wird ferner durch den isolierend wirkenden freien Raum beeinflußt, der zwischen der Innenwandung der Wassertasse und der im Abstand von dieser angeordneten ringförmigen Wand vorliegt, da sich das Kondensat an senkrechten Flächen niederschlägt und keine Möglichkeit mehr hat, an den Dichtrand zu fließen und sich dort anzustauen. Es wird ferner vermutet, daß Verschmutzungen an der Unterseite des Deckels und an dessen Dichtflächen dadurch erheblich verringert werden, daß die Dichtkante des Innendeckels höher liegt als bei bekannten Verschlüssen, so daß das Produktionsgas in größerem Abstand von der Dichtfläche in die Vorlage gesaugt wird.Practical tests with a riser pipe closure according to the invention have shown that even after 6 weeks of operation there were no annoying condensate residues which could lead to the inner ceiling becoming stuck. This result is surprising insofar as the riser tube closures had to be cleaned after a few days at the latest. The applicant attributes this, among other things, to the fact that the inner cover is designed as a downwardly curved disc and there is only an edge contact on the sealing surface. As a result, the condensate accumulating on the inner cover can no longer accumulate in the area of the sealing edge. but drips to the lower, lowest point of the lid and collects there until it drips through the riser pipe into the oven. Insofar as filigree cracking residues form at this point, they fall back into the furnace as a result of the vibrations that occur when the cover is actuated. The formation of the condensate is also influenced by the insulating free space that exists between the inner wall of the water cup and the annular wall arranged at a distance from it, since the condensate is deposited on vertical surfaces and no longer has the possibility of flowing to the sealing edge and accumulate there. It is also suspected that contamination on the underside of the cover and on its sealing surfaces is significantly reduced by the fact that the sealing edge of the inner cover is higher than in known closures, so that the production gas is sucked into the template at a greater distance from the sealing surface.

Auf der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

  • Figur 1 eine teilweise geschnittene Seitenansicht des oberen Endes eines Steigerohres mit dem erfindungsgemäßen Verschluß,
  • Figur 2 eine Draufsicht und
  • Figur 3 eine der Figur 1 entsprechende Seitenansicht, bei der der Deckel geöffnet ist.
In the drawing, an embodiment of the invention is shown. Show it:
  • 1 shows a partially sectioned side view of the upper end of a riser pipe with the closure according to the invention,
  • Figure 2 is a plan view and
  • Figure 3 is a side view corresponding to Figure 1, in which the lid is open.

Auf Figur 1 ist das obere Ende eines Steigerohres 1 dargestellt, das mit einem umlaufenden Flansch 2 versehen ist, an dem die Verschlußeinrichtung mit Schrauben 3 befestigt ist. Diese besteht aus einer Wassertasse mit einem Boden 4, einer äußeren Wand 5 und einer inneren Wand 6.In Figure 1, the upper end of a riser pipe 1 is shown, which is provided with a circumferential flange 2, on which the closure device is fastened with screws 3. This consists of a water cup with a bottom 4, an outer wall 5 and an inner wall 6.

Der Boden 4 ist zum Innenraum des Steigerohres verlängert und mit einer weiteren ringförmigen Wandung 7 versehen, die von der Wassertasse umschlossen wird und im Abstand von der inneren Wand 6 konzentrisch zur Öffnung des Steigerohres angeordnet ist. Bei dem dargestellten Ausführungsbeispiel bestehen die Wassertasse mit dem Boden 4 und den beiden Wandungen 5 und 6 und die ringförmige Wand 7 aus einem Stück, vorzugsweise aus einer Gußkonstruktion. Es ist auch möglich, die ringförmige Wandung 7 in Form eines Ringes lose auf den nach innen vorgezogenen Boden der Wassertasse aufzusetzen und an einigen gleichmäßig über den Umfang verteilten Stellen durch Einfügen von Distanzstücken zwischen der Innenwandung 6 und dem Ring konzentrisch zu dem Steigerohr zu positionieren.The bottom 4 is extended to the interior of the riser and is provided with a further annular wall 7 which is enclosed by the water cup and is arranged at a distance from the inner wall 6 concentrically to the opening of the riser. In the illustrated embodiment, the water cup with the bottom 4 and the two walls 5 and 6 and the annular wall 7 consist of one piece, preferably of a cast construction. It is also possible to loosely place the ring-shaped wall 7 in the form of a ring on the inwardly drawn-out floor of the water cup and to position it concentrically with the riser pipe at some points evenly distributed over the circumference by inserting spacers between the inner wall 6 and the ring.

Das Verschlußteil, das aus der in Figur 1 dargestellten Stellung in die aus Figur 3 ersichtliche geöffnete Stellung verschwenkt werden kann, besteht aus einem glockenartig ausgebildeten Oberdeckel 8, dessen umlaufender Rand, wie sich aus Figur 1 ergibt, in der Schließstellung in die mit Wasser oder einer anderen geeigneten Flüssigkeit gefüllte Wassertasse 9 eintaucht, so daß ein gasdichter Abschluß vorliegt. Der Innendeckel 10 besteht erfindungsgemäß aus einem gewölbten Blech, das die Form eines*Kugelmanteiabschnit- tes hat und ist so innerhalb des Oberdeckels befestigt, daß die Wölbung in der Schließstellung nach unten, d.h. zum Innenraum des Steigerohres 1, gerichtet ist. Der Innendeckel 10 ist im Abstand von der Innenfläche des Oberdeckeis 8 mittels einer rohrförmigen Halterung 11 befestigt, die mittig, z.B. durch Schweißen, mit dem Innendeckel verbunden ist und an ihrem anderen Ende im mittleren Bereich des Oberdeckeis angebracht ist. Bei dem dargestellten Ausführungsbeispiel ist der Abstandshalter 11 mit einem Flansch versehen, der mit dem Oberdeckel verschraubt ist. Innendeckel und Oberdeckel bilden somit eine Einheit. Eine getrennte Beweglichkeit zwischen Oberdekkel und Innendeckel ist deswegen nicht erforderlich, weil der Oberdeckel nicht flächenmäßig abdichtet, sondern weil die Abdichtung nach außen durch die Wassertauchung gewährleistet ist. Um eine einwandfreie Abdichtung auch dann sicherzustellen, wenn im praktischen Betrieb nicht auszuschließende Spannungen oder Verformungen durch Hitzeeinwirkung, z.B. bei langem Offenstehen der Steigerohre, auftreten, sieht die Erfindung vor, den Oberdeckel mit dem daran befestigten Innendeckel über ein Kreuzgelenk 12 mit dem Schwenkhebel 13 des Gestänges 14 zu verbinden. Selbstverständlich ist auch eine kardanische Aufhängung möglich. Mit 15 ist der Drehpunkt des Schwenkmechanismus bezeichnet, der in üblicher Weise ein Gegengewicht 16 enthält, um den zum Anheben des Deckels notwendigen Kraftaufwand zu verringern. Mit 17 sind drei Stellschrauben bezeichnet, mit denen die Beweglichkeit des Oberdeckels auf ein erforderliches Mindestmaß reduziert wird.The closure member, which can be pivoted from the position shown in Figure 1 into the open position shown in Figure 3, consists of a bell-shaped upper cover 8, the peripheral edge, as can be seen from Figure 1, in the closed position in the water or another suitable liquid filled water cup 9 so that there is a gas-tight seal. The inner cover 10 according to the invention consists of a curved sheet which has the shape of a * Kugelmanteiabschnit- and is fastened within the top cover so that the curvature in the closed position is directed downwards, ie towards the interior of the riser pipe 1. The inner cover 10 is at a distance attached from the inner surface of the top cover 8 by means of a tubular holder 11 which is connected in the middle, for example by welding, to the inside cover and is attached at its other end in the central region of the top cover. In the illustrated embodiment, the spacer 11 is provided with a flange which is screwed to the top cover. The inner cover and upper cover thus form a unit. A separate mobility between the top lid and inner lid is not necessary because the top lid does not seal in terms of area, but because the seal to the outside is guaranteed by water immersion. In order to ensure a perfect seal even if stresses or deformations caused by heat, for example when the riser pipes are open for a long time, occur in practical operation, the invention provides for the upper cover with the inner cover attached to it via a universal joint 12 with the pivot lever 13 of the Linkage linkage 14. Of course, gimbaling is also possible. With 15 the pivot point of the pivot mechanism is designated, which contains a counterweight 16 in the usual way in order to reduce the force required to lift the lid. With 17 three screws are designated, with which the mobility of the upper cover is reduced to a necessary minimum.

Claims (6)

1. Ascension pipe cover designed to seal-off the upper opening of an ascension pipe being of a circular or oval cross-section, and located on the oven top of a coke oven, and through which the crude gas evolving during coal carbonization in the coke oven chambers is drawn off and exhausted into the collecting main, with the ascension pipe cover consisting of a bell-type upper cover and an inner cover and with the peripheral rim of the upper cover, whilst being in locking position, submerging into a water seal provided at the upper rim of the ascension pipe while the rim of the inner rim rests on an inner support surface of the ascension pipe, characterized in that the inner cover (10) consists of an arched plate shaped like a ball shell section with an arch pointing to the inside of the ascension pipe and resting with its peripheral rim on a sealing surface formed by the upper edge of an annular wall (7) arranged at a distinct distance away from the water seal, being surrounded by said water seal and the upper edge of which lies above the bottom (4) of the water seal.
2. Ascension pipe cover according to Claim 1, characterized in that the upper edge of the annular wall shell (7) roughly lies in the area of the upper edge of the water seal.
3. Ascension pipe cover according to any of the preceding Claims 1 or 2, characterized in that the annular wall shell (7) is of a ring-shaped design, loosely placed on the inwardly prolongued bottom (4) of the water seal, and being concentrically positioned at some points equally spread over the periphery toward the opening of the ascension pipe (1) by insertion of spacer pieces arranged between inner wall shell (6) of the water seal and the ring.
4. Ascension pipe cover according to any of the preceding Claims 1 or 2, characterized in that the annular wall shell (7) consists of one piece with the inwardly extended bottom (4) of the water seal and forms a wall shell arranged at a distinct distance from the inner wall shell (6) of the water seal.
5. Ascension pipe cover, according to any of the preceding Claims 1 to 4, characterized in that the inner cover (10) preferrably is rigidly connected by bolting to the upper cover (8).
6. Ascension pipe cover, according to any of the preceding Claims 1 to 5, characterized in that the sealing part consisting of the upper cover (8) and inner cover (10) is fastened to the lever arm (13) of the linkage unit to put-on and raise the cover by means of a universal joint (12).
EP85108406A 1984-08-25 1985-07-06 Ascencion pipe cover Expired EP0173035B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3431298 1984-08-25
DE19843431298 DE3431298A1 (en) 1984-08-25 1984-08-25 PIPE CLOSURE

Publications (3)

Publication Number Publication Date
EP0173035A2 EP0173035A2 (en) 1986-03-05
EP0173035A3 EP0173035A3 (en) 1987-05-20
EP0173035B1 true EP0173035B1 (en) 1989-11-08

Family

ID=6243875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108406A Expired EP0173035B1 (en) 1984-08-25 1985-07-06 Ascencion pipe cover

Country Status (4)

Country Link
US (1) US4666559A (en)
EP (1) EP0173035B1 (en)
KR (1) KR860001867A (en)
DE (1) DE3431298A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5372680A (en) * 1991-05-30 1994-12-13 Aktsionernoe Obschestvo "Sistemy Novykh Tekhnology" (Sinto Ltd) Plant for processing vegetal stock
KR100742511B1 (en) * 2001-09-06 2007-07-24 주식회사 포스코 Apparatus for controlling mini ascension pipe water supply of coke oven
DE10217188B4 (en) * 2002-04-18 2004-02-26 Deutsche Montan Technologie Gmbh Device for closing the riser pipe of a coke oven

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE664833C (en) * 1929-10-29 1938-09-09 Carl Still G M B H Device for removing gases and vapors from inside the fuel mass of chamber ovens
US4168208A (en) * 1977-06-29 1979-09-18 Dr. C. Otto & Comp. G.M.B.H. Ascension pipe closure for coke oven batteries
DE2730221A1 (en) * 1977-07-05 1979-01-25 Otto & Co Gmbh Dr C FURNITURE AT COCING OVENS
DE7914320U1 (en) * 1979-05-17 1979-08-09 Fa. Carl Still Gmbh & Co Kg, 4350 Recklinghausen SUBMERSIBLE LOCKING DEVICE FOR ELEVATOR LID
US4239602A (en) * 1979-07-23 1980-12-16 Insul Company, Inc. Ascension pipe elbow lid for coke ovens
DE3108483C2 (en) * 1981-03-06 1985-06-27 Carl Still Gmbh & Co Kg, 4350 Recklinghausen Filling hole closure device for horizontal coking ovens

Also Published As

Publication number Publication date
US4666559A (en) 1987-05-19
DE3431298A1 (en) 1986-03-06
DE3431298C2 (en) 1991-11-14
EP0173035A3 (en) 1987-05-20
KR860001867A (en) 1986-03-24
EP0173035A2 (en) 1986-03-05

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