EP0562701A1 - Spray-cooled cover - Google Patents

Spray-cooled cover Download PDF

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Publication number
EP0562701A1
EP0562701A1 EP93250064A EP93250064A EP0562701A1 EP 0562701 A1 EP0562701 A1 EP 0562701A1 EP 93250064 A EP93250064 A EP 93250064A EP 93250064 A EP93250064 A EP 93250064A EP 0562701 A1 EP0562701 A1 EP 0562701A1
Authority
EP
European Patent Office
Prior art keywords
spray
cover
swivel
drain
lid
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
Application number
EP93250064A
Other languages
German (de)
French (fr)
Other versions
EP0562701B1 (en
Inventor
Albert J. Zalner
Otto H. Metelmann
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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Filing date
Publication date
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Publication of EP0562701A1 publication Critical patent/EP0562701A1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/12Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/12Working chambers or casings; Supports therefor
    • F27B3/16Walls; Roofs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/18Door frames; Doors, lids, removable covers
    • F27D1/1808Removable covers
    • F27D1/1816Removable covers specially adapted for arc furnaces

Definitions

  • the invention relates to a spray-cooled lid for tiltable metallurgical vessels.
  • lids are placed on the furnace vessel and remain on it during operation. They do all the movements, especially the tilting of the vessel. In certain operating phases, for example when charging, the lid is lifted from the container and swiveled to the side.
  • a spray-cooled cover is known from US Pat. No. 4,715,042, in which the cooling medium is sucked off by means of venturi pumps. In practice it has been shown that this type of pump is not able to draw off large amounts of coolant. In special cases, water collects in the lid that instead of spray cooling there is normal water cooling with the negative effect that overheating of lid parts can occur in this area.
  • the object of the invention is to provide a spray-cooled lid of the type mentioned, in which a safe supply and removal of the cooling liquid in any position of the lid is possible in a structurally simple manner without the use of external energy.
  • the invention solves the problem by the characterizing features of claim 1.
  • two discharge lines are provided, which are guided coaxially for the majority of their distance and in a common transfer station of the coolant to the factory network.
  • the transfer station is at a distance from the lowest possible operating point of the cover, so that a reliable drainage of the cooling medium is guaranteed by gravity. The use of suction pumps is therefore unnecessary.
  • the cooling medium in the lid is extracted at two points, e.g. at the intersection of the central axis of the lid and the edge area, pointing once to the racking and once to the waste door.
  • a tunnel is provided in the groove provided on the outer edge of the cover, which ends in a trunk-like shape at the apex of tapping or slagging and is connected at the other end to pipelines arranged on the edge of the cover.
  • These drain pipes are designed as square pipes in the area of the cover, since this ensures that the floor is level with the apex of the channel and that the cooling medium can flow away safely.
  • the square tube which serves to drain the cooling medium from the region of the tapping side, is arranged parallel to the tilt axis in the region of the top of the cover, which faces the tapping hole. This makes it possible, in the "tapping" tilting position, to allow the water collecting in this tilting position to flow off safely in the region of the top of the lid.
  • the drain line which is connected to the top of the lid facing the slag flap, is designed as a square tube, so that the area in which it is connected to the edge of the lid is box-shaped.
  • the center of this box coincides with the tilt axis.
  • the box extends in the direction of the slag side of the lid and is therefore suitable for removing cooling liquid from the lid side of the lid on the slag side over a wide tilting angle range of the lid.
  • the square tube is inclined at an angle to the transfer station.
  • the ratios of the gutter depth of the cover and box size of the drain pipe are chosen so that the coolant in the Deslagging phase is safely conducted away from the lid without water being able to collect outside the channel.
  • the cooling water discharge is designed so that not only the tilting movement of the lid, but also the pivoting away without interrupting the water supply and drainage is possible.
  • hoses that can absorb torsions and bends without damage.
  • hoses are provided which are connected at one end to the cover drain pipes and at the other end are rotatably mounted on a swivel arm. If the lid tilts, be it in the parting or slag direction, this movement is carried out without moving the swivel arm.
  • the swivel arm is moved in a manner comparable to the movement of the lid support arm and thus enables the lid to be swiveled with the hoses connected.
  • the movement of the swivel arm tip is in turn compensated for by another hose, which is connected via swivel joints to the final piping of the discharge line, which is connected to the transfer station of the cooling medium to the plant network.
  • another hose which is connected via swivel joints to the final piping of the discharge line, which is connected to the transfer station of the cooling medium to the plant network.
  • FIG. 1 shows an overview of a furnace position with a metallurgical vessel 10, which has a tilting device 11, with which the vessel can be brought into the parting-off position 12 with a low-lying tap opening 14 and into the deslagging position 13.
  • the tilting angle during parting off is designated with " ⁇ " and that during deslagging with " ⁇ ”.
  • the metallurgical vessel 10 can be closed with a lid 20 by means of a lid lifting device 15.
  • the lid lifting device 15 can be pivoted away from the furnace vessel 10 via a lid rotating column 16 (shown in FIG. 4). Drain pipes 31 and 41 are arranged on the cover 20.
  • the lid 20 has a lower lid part 23 and an upper lid part 24, between which spray elements 21 for spraying coolant are arranged.
  • the lid edge 22 is designed as a trough 25, within which a partition 26 and a hood 27 are provided.
  • the partition wall 26, the hood 27 and the lid edge 22 are joined together as a tube which extends from the tilting axis Ii in the direction of the tap opening 14.
  • a drain line (tap) 30 is provided, which has a drain pipe 31 which is designed as a square pipe 32 near the cover.
  • a drain line (slag) 40 is provided which has a drain pipe 41 which is designed as a square pipe 42 near the cover. Couplings are provided on the drain pipes 31, 41, etc. the coupling pieces 61 and 62.
  • FIGS. 4 and 5 show the kinematics of a lid pivot, u.z. as a top view and a side view.
  • the lid 20 is pivoted away, for example during the loading process, into the position 20 from the vessel 10 with its tapping 14.
  • the drain pipes 31 and 41 including the coupling pieces 61, 62 are also pivoted.
  • this swivel movement is also carried out by the swivel arm 83, so that the connecting hoses 33 and 43 and the coupling pieces 64 and 65 also swivel at the same speed and at the same angle.
  • the discharge pipe 47 opens into a transfer station 70 which has a transfer container 71 which is connected to a plant network 79.
  • the transfer container is at a distance c from the lid.
  • an inflow line 50 is arranged, which consists of an inflow pipe 51 and an inflow hose 53.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Closures For Containers (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

A spray-cooled furnace cover or roof from which the coolant is removed by gravity flow without the use of any pumps. The roof has lower coolant consumption than roofs requiring Venturi pumps to remove water.

Description

Die Erfindung betrifft einen sprühgekühlten Deckel für kippbare metallurgische Gefäße.The invention relates to a spray-cooled lid for tiltable metallurgical vessels.

Solche Deckel werden auf dem Ofengefäß abgelegt und bleiben während des Betriebes auf diesen liegen. Dabei machen sie sämtliche Bewegungen, insbesondere das Kippen des Gefäßes mit. In bestimmten Betriebsphasen, beispielsweise beim Chargieren, wird der Deckel vom Gefäß angehoben und zur Seite geschwenkt.Such lids are placed on the furnace vessel and remain on it during operation. They do all the movements, especially the tilting of the vessel. In certain operating phases, for example when charging, the lid is lifted from the container and swiveled to the side.

Diesen von der Normallage verschiedenen Deckelpositionen kommt der Kühlmittelzu- und -abfuhr bei sprühgekühlten Deckeln eine besondere Bedeutung zu. Aus der Schrift US-PS 4 715 042 ist ein sprühgekühlter Deckel bekannt, bei dem das Kühlmedium mittels Venturi-Pumpen abgesaugt wird. In der betrieblichen Praxis hat sich gezeigt, daß diese Pumpenart nicht in der Lage ist, größere Mengen an Kühlflüssigkeit abzusaugen. In besonderen Fällen sammelt sich Wasser im Deckel an, daß statt der Sprühkühlung hier eine normale Wasserkühlung vorliegt mit dem negativen Effekt, daß es in diesem Bereich zu überhitzungen von Deckelteilen kommen kann.These cover positions, which differ from the normal position, are of particular importance for the coolant supply and removal for spray-cooled covers. A spray-cooled cover is known from US Pat. No. 4,715,042, in which the cooling medium is sucked off by means of venturi pumps. In practice it has been shown that this type of pump is not able to draw off large amounts of coolant. In special cases, water collects in the lid that instead of spray cooling there is normal water cooling with the negative effect that overheating of lid parts can occur in this area.

Aus der Schrift US-PS 47 89 991 ist ein sprühgekühlter Deckel bekannt, bei dem Scheibenpumpen zum Einsatz kommen, die in der Lage sind, größere Wassermengen abzusaugen. Darüber hinaus sind sie geeignet. auch nach einem möglichen Trockenlauf, das bedeutet, wenn der Wasserfaden auf der Ansaugseite abreißt, den Betrieb unbeschadet wieder aufzunehmen. Diese Pumpen sind über Schläuche mit dem sprühgekühlten Deckel verbunden und erlauben somit ein Kippen des Deckels. Zum Schwenken des Deckels ist es erforderlich, diese Schläuche mittels Schnellkupplungen von Deckel zu lösen. Als weiterer Nachteil sei noch erwähnt, daß bei dem bekannten Zu- und Abführen der Kühlflüssigkeit nicht nur Pumpen für das Sprühwasser, sondern auch fremdgetriebene Pumpen für das Absaugen der Kühlflüssigkeit erforderlicln sind.From the document US-PS 47 89 991 a spray-cooled lid is known, in which disc pumps are used, which are able to draw off larger amounts of water. They are also suitable. Even after a possible dry run, this means that if the water thread on the suction side breaks off, operation will resume undamaged. These pumps are connected to the spray-cooled cover by hoses and thus allow the cover to tilt. To pivot the cover, it is necessary to detach these hoses from the cover using quick-release couplings. As a further disadvantage, it should be mentioned that in the known supply and discharge of the cooling liquid, not only pumps for the spray water, but also externally driven pumps are required for the suction of the cooling liquid.

Aufgabe der Erfindung ist es, einen sprühgekühlten Deckel der genannten Gattung zu schaffen, bei dem in konstruktiv einfacher weise ohne den Einsatz von Fremdenergie ein sicheres Zu- und Wegführen der Kühlflussigkeit in jeder beliebigen Lage des Deckels möglich ist.The object of the invention is to provide a spray-cooled lid of the type mentioned, in which a safe supply and removal of the cooling liquid in any position of the lid is possible in a structurally simple manner without the use of external energy.

Die Erfindung löst die Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 1.The invention solves the problem by the characterizing features of claim 1.

Zum Wegführen der Kühlflüssigkeit, die über Pumpen dem Deckel zugeführt und über Sprühdüsen auf der Unterseite des Deckels verteilt sich in einer am Rand des Deckels vorgesehenen Rinne sammelt, sind zwei Abführleitungen vorgesehen, die den größten Teil ihrer Strecke koaxial geführt werden und in einer gemeinsamen übergabestation der Kühlflüssigkeit an das Werksnetz enden. Die Übergabestation weist zum tiefst möglichen Betriebspunkt des Deckels eine Entfernung auf, so daß ein sicheres Abfließen des Kühlmediums durch Schwerkraft gewährleistet ist. Der Einsatz von Absaugpumpen erübrigt sich damit.To discharge the coolant, which is supplied to the cover by pumps and collected in a channel provided at the edge of the cover via spray nozzles on the underside of the cover, two discharge lines are provided, which are guided coaxially for the majority of their distance and in a common transfer station of the coolant to the factory network. The transfer station is at a distance from the lowest possible operating point of the cover, so that a reliable drainage of the cooling medium is guaranteed by gravity. The use of suction pumps is therefore unnecessary.

Das Absaugen des Kühlmediums im Deckel erfolgt an zwei Stellen, u.z. am Schnittpunkt der Mittenachse des Deckels mit dem Randbereich einmal zum Abstich und einmal zur Abschlacktür weisend.The cooling medium in the lid is extracted at two points, e.g. at the intersection of the central axis of the lid and the edge area, pointing once to the racking and once to the waste door.

Hierzu ist in der am Außenrand des Deckels vorgesehenen Rinne ein Tunnel vorgesehen, der rüsselförmig einenends im Scheitelpunkt Abstechen bzw. Abschlacken mündet und anderenends mit am Deckelrand angeordneten Rohrleitungen in Verbindung steht. Diese Abflußrohre sind im Bereich des Deckels als Vierkantrohre ausgebildet, da so eine Bodengleichheit mit dem Scheitel der Rinne erreicht wird und ein sicheres Abfließen des Kühlmediums möglich ist.For this purpose, a tunnel is provided in the groove provided on the outer edge of the cover, which ends in a trunk-like shape at the apex of tapping or slagging and is connected at the other end to pipelines arranged on the edge of the cover. These drain pipes are designed as square pipes in the area of the cover, since this ensures that the floor is level with the apex of the channel and that the cooling medium can flow away safely.

Das Vierkantrohr, das zum Abfluß des Kühlmediums aus dem Bereich der Abstichseite dient, ist parallel zur Kippachse im Bereich des Deckelscheitels, der dem Abstichloch zugewandt ist, angeordnet. Hierdurch ist es möglich, bei der Kippstellung "Abstechen", das sich in dieser Kippstellung im Bereich des Deckelscheitels sammelnde Wasser sicher abfließen zu lassen.The square tube, which serves to drain the cooling medium from the region of the tapping side, is arranged parallel to the tilt axis in the region of the top of the cover, which faces the tapping hole. This makes it possible, in the "tapping" tilting position, to allow the water collecting in this tilting position to flow off safely in the region of the top of the lid.

Die Abflußleitung, die mit dem der Abschlackklappe zugewandten Deckelscheitel in Verbindung steht, ist als Vierkantrohr ausgebildet, so daß der Bereich, in dem es mit dem Deckelrand in Verbindung steht, kastenförmig ist. Der Mittelpunkt dieses Kastens stimmt mit der kippachse überein. Der Kasten erstreckt sich dabei in Richtung Abschlackseite des Deckels und ist somit geeignet, über einen weiten kippwinkelbereich des Deckels über den Absaugtunnel Kühlflüssigkeit aus dem abschlackseitigen Deckelscheitel abzuführen. Von der Abschlackseite wegweisend ist das Vierkantrohr unter einem Winkel der übergabestation zugeneigt angeordnet. Die Verhältnisse von Rinnentiefe des Deckels und Kastengröße des Abflußrohres sind so gewählt, daß das Kühlmittel in der Abschlackphase sicher vom Deckel weggeleitet wird, ohne daß sich Wasser außerhalb der Rinne ansammeln kann.The drain line, which is connected to the top of the lid facing the slag flap, is designed as a square tube, so that the area in which it is connected to the edge of the lid is box-shaped. The center of this box coincides with the tilt axis. The box extends in the direction of the slag side of the lid and is therefore suitable for removing cooling liquid from the lid side of the lid on the slag side over a wide tilting angle range of the lid. Pointing away from the slag side, the square tube is inclined at an angle to the transfer station. The ratios of the gutter depth of the cover and box size of the drain pipe are chosen so that the coolant in the Deslagging phase is safely conducted away from the lid without water being able to collect outside the channel.

Die Kühlwasserabfuhr ist dabei so ausgestaltet, daß nicht nur die Kippbewegung des Deckels, sondern auch das Wegschwenken ohne Unterbrechung der Wasserzu- und -abfuhr möglich ist.The cooling water discharge is designed so that not only the tilting movement of the lid, but also the pivoting away without interrupting the water supply and drainage is possible.

Hierzu werden wesentliche Teile der Leitungsführungen aus Schläuchen gebildet, die ohne Beschädigung Torsionen und Biegungen aufnehmen können. Hierzu sind Schläuche vorgesehen, die einenends mit den Deckelabflußrohren verbunden sind und anderenends auf einem Schwenkarm drehbar gelagert werden. Bei einem Kippen des Deckels, sei es in Abstech- oder Anschlackrichtung, wird diese Bewegung ohne Verlagerung des Schwenkarms durchgeführt. Bei einem Schwenken des beckels wird der Schwenkarm vergleichbar mit der Bewegung des Deckeltragarmes bewegt und ermoglicht somit ein Schwenken des Deckels mit angeschlossenen Schläuchen. Die Bewegung der Schwenkarmspitze wird wiederum ausgeglichen von einem weiteren Schlauch, der über Drehgelenke mit der endgültigen Verrohrung der Abführleitung in Verbindung steht, die mit der übergabestation des Kühlmediums an das Werksnetz verbunden ist. Je nach Ausführung und Ausnutzung der geometrischen Verhältnisse, d.h. also Anordnung der Schwenksäule und Länge des Schwenkarmes besteht die Möglichkeit, den Deckel mit angeschlossener Kühlwasserversorgung so weit zu schwenken, daß das Ofengefäß komplett freigegeben werden kann.To this end, essential parts of the cable routing are formed from hoses that can absorb torsions and bends without damage. For this purpose, hoses are provided which are connected at one end to the cover drain pipes and at the other end are rotatably mounted on a swivel arm. If the lid tilts, be it in the parting or slag direction, this movement is carried out without moving the swivel arm. When the lid is swiveled, the swivel arm is moved in a manner comparable to the movement of the lid support arm and thus enables the lid to be swiveled with the hoses connected. The movement of the swivel arm tip is in turn compensated for by another hose, which is connected via swivel joints to the final piping of the discharge line, which is connected to the transfer station of the cooling medium to the plant network. Depending on the design and utilization of the geometric relationships, i.e. So arrangement of the swivel column and length of the swivel arm, it is possible to swivel the lid with the connected cooling water supply so far that the furnace vessel can be completely released.

Ein Beispiel der Erfindung ist in der beiliegenden Zeichnung dargelegt. Es zeigen:

Fig. 1
eine übersicht einer Ofenanlage,
Fig. 2.1
einen Deckelschnitt,
Fig. 2.2
eine teilweise geschnittene Ansicht A aus Fig. 2.1,
Fig. 3
eine Deckeldraufsicht,
Fig. 4
die Kinematik einer Deckelschwenkung als Draufsicht,
Fig. 5
die Kinematik einer Deckelschwenkung als Seitenansicht.
An example of the invention is set out in the accompanying drawing. Show it:
Fig. 1
an overview of a furnace system,
Fig. 2.1
a lid cut,
Fig. 2.2
2 shows a partially sectioned view A from FIG. 2.1,
Fig. 3
a top view of the lid,
Fig. 4
the kinematics of a pivoting lid as a top view,
Fig. 5
the kinematics of a lid pivoting as a side view.

Die Fig. 1 zeigt die Übersicht einer Ofenlage mit einem metallurgischen Gefäß 10, das eine Kippeinrichtung 11 aufweist, mit der das Gefäß in die Stellung Abstechen 12 mit tiefliegender Abstichöffnung 14 und in die Stellung Abschlacken 13 gebracht werden kann. Der Kippwinkel beim Abstechen ist mit "α" und der beim Abschlacken mit "β" bezeichnet. Das metallurgische Gefäß 10 ist mit einem Deckel 20 mittels einer Deckelhubvorrichtung 15 verschließbar. Die Deckelhubvorrichtung 15 ist dabei über eine Deckeldrehsäule 16 (in Fig. 4 dargestellt) vom Ofengefäß 10 wegschwenkbar. Am Deckel 20 angeordnet sind Abflußrohr 31 und 41.1 shows an overview of a furnace position with a metallurgical vessel 10, which has a tilting device 11, with which the vessel can be brought into the parting-off position 12 with a low-lying tap opening 14 and into the deslagging position 13. The tilting angle during parting off is designated with "α" and that during deslagging with "β". The metallurgical vessel 10 can be closed with a lid 20 by means of a lid lifting device 15. The lid lifting device 15 can be pivoted away from the furnace vessel 10 via a lid rotating column 16 (shown in FIG. 4). Drain pipes 31 and 41 are arranged on the cover 20.

Die Fig. 2.1, 2.2 und 3 zeigen den Deckel im Schnitt in einer Teilansicht und in der Draufsicht. Der Deckel 20 weist ein Deckelunterteil 23 und ein Deckeloberteil 24 auf, zwischen denen Sprühelemente 21 zum Versprühen von Kühlflüssigkeit angeordnet sind. Der Deckelrand 22 ist als Rinne 25 ausgebildet, innerhalb der eine Trennwand 26 sowie eine Haube 27 vorgesehen ist. Die Tennwand 26, die Haube 27 und der Deckelrand 22 sind als Rohr zusammengefügt, welches sich von der Kippachse Ii in Richtung Abstichöffnung 14 erstreckt.2.1, 2.2 and 3 show the cover in section in a partial view and in plan view. The lid 20 has a lower lid part 23 and an upper lid part 24, between which spray elements 21 for spraying coolant are arranged. The lid edge 22 is designed as a trough 25, within which a partition 26 and a hood 27 are provided. The partition wall 26, the hood 27 and the lid edge 22 are joined together as a tube which extends from the tilting axis Ii in the direction of the tap opening 14.

Im rechten Winkel zur Schwenkachse III ist eine Abflußleitung (Abstich) 30 vorgesehen, die ein Abflußrohr 31 aufweist, das in Deckelnähe als Vierkantrohr 32 ausgebildet ist.At right angles to the pivot axis III, a drain line (tap) 30 is provided, which has a drain pipe 31 which is designed as a square pipe 32 near the cover.

Tangential vom Deckelrand im Bereich der Kippachse II beginnend, ist eine Abflußleitung (Schlacke) 40 vorgesehen, die ein Abflußrohr 41 aufweist, das in Deckelnähe als Vierkantrohr 42 ausgebildet ist. An den Abflußrohren 31, 41 sind Kupplungen vorgesehen, u.z. die Kupplungsstücke 61 und 62.Starting from the edge of the cover in the region of the tilt axis II tangentially, a drain line (slag) 40 is provided which has a drain pipe 41 which is designed as a square pipe 42 near the cover. Couplings are provided on the drain pipes 31, 41, etc. the coupling pieces 61 and 62.

Die Fig. 4 und 5 zeigen die Kinematik einer Deckelschwenkung, u.z. als Draufsicht und als Seitenansicht. Der Deckel 20 wird, beispielsweise während des Beschickungsvorganges, in die Stellung 20 vom Gefäß 10 mit seinem Abstich 14 weggeschwenkt. Die Abflußrohre 31 und 41 einschließlich der Kupplungsstücke 61, 62 werden dabei mitgeschwenkt. Bei Verwendung der Deckeldrehsäule 16 als Schwenkvorrichtung 80 wird diese Schwenkbewegung von dem Schwenkarm 83 ebenfalls durchgeführt, so daß die Anschlußschläuche 33 und 43 sowie die Kupplungsstücke 64 und 65 in gleicher Geschwindigkeit und gleichem Winkel mitschwenken. Die zwischen dem Kopfende 81 des Schwenkarmes 83 und den Drehgelenken 36, 46, die an einem Abführrohr 47 befestigt sind, angeordneten Verbindungsschläuche 35, 45 nehmen diese Bewegung elastisch auf. Beim Schwenken des Deckels braucht somit keine Schlauchverbindung gelöst zu werden.4 and 5 show the kinematics of a lid pivot, u.z. as a top view and a side view. The lid 20 is pivoted away, for example during the loading process, into the position 20 from the vessel 10 with its tapping 14. The drain pipes 31 and 41 including the coupling pieces 61, 62 are also pivoted. When using the cover rotating column 16 as a swivel device 80, this swivel movement is also carried out by the swivel arm 83, so that the connecting hoses 33 and 43 and the coupling pieces 64 and 65 also swivel at the same speed and at the same angle. The connecting hoses 35, 45 arranged between the head end 81 of the swivel arm 83 and the rotary joints 36, 46, which are fastened to a discharge pipe 47, absorb this movement elastically. When swiveling the cover, no hose connection needs to be loosened.

Das Abführrohr 47 mündet in einer übergabestation 70, die einen übergabebehälter 71 aufweist, der mit einem Werksnetz 79 in Verbindung steht. Der übergabebehälter weist zum Deckel einen Abstand c auf.The discharge pipe 47 opens into a transfer station 70 which has a transfer container 71 which is connected to a plant network 79. The transfer container is at a distance c from the lid.

An dem Deckel 20 ist eine Zuflußleitung 50 angeordnet, die aus einem Zuflußrohr 51 und einem Zuflußschlauch 53 besteht.

Figure imgb0001
On the cover 20, an inflow line 50 is arranged, which consists of an inflow pipe 51 and an inflow hose 53.
Figure imgb0001

Claims (10)

Sprühgekühlter Deckel für kippbare metallurgische Gefäße, von denen dieser abhebbar und wegschwenkbar ist, mit planparallel angeordnetem kreisförmigem Ober- und Unterteil und dazwischen angeordneten, an eine Kühlmittelzufuhr angeschlossenen Sprühelementen sowie mit einem Kühlmittelabfluß, der über zwei koaxial geführte Abflußleitungen mit einer übergabestation der kühlflüssigkeit ans Werksnetz anschließbar ist,
dadurch gekennzeichnet,
daß am Rand des Deckelunterteils (23) des Deckels (20) eine rinnernartige Absenkung (25) vorgesehen ist, an die im Schnittpunkt mit der Kippachse (II) des Deckels (20) ein Abflußrohr (41) der tangential und in einem mindestens dem Kippwinkel des Gefäßes entsprechenden Winkel "γ" zum Deckelunterteil (23) geführte Abflußleitung (40) und an die im Bereich des der Abstichöffnung (14) zugeneigten Teils des Deckels (20) parallel zur Kippachse (II) ein zum Deckelunterteil (23) einen Winkel "δ" aufweisendes Abflußrohr (31) angeschlossen ist,
daß der mit der rinnenförmigen Absenkung (25) verbundene Teil der Abflußrohre (31, 41) als Vierkantrohre (32, 42) ausgebildet sind und
daß baugleich und in räumlicher Nähe vorgesehene Mündungen der Abflußrohre (31, 41) Kupplungsteile (61, 62) aufweisen, an die Anschlußschläuche (33, 43) ankuppelbar sind, und
daß die Abflußrohre (31, 41) mit der übergabestation (70) in Verbindung stehen, die von der tiefsten Lage des gekippten Deckels (20) einen vertikalen Abstand (c) aufweist, der ein sicheres Abfließen des Kühlmediums aufgrund der Schwerkraft unter Berücksichtigung aller Widerstände zuläßt.
Spray-cooled lid for tiltable metallurgical vessels, from which it can be lifted off and swung away, with a flat top and bottom part arranged in parallel and with spray elements connected to a coolant supply in between, and with a coolant outflow via two coaxial discharge lines with a transfer station of the coolant to the plant network can be connected,
characterized,
that at the edge of the lower lid part (23) of the lid (20) a gutter-like depression (25) is provided, to which, at the intersection with the tilt axis (II) of the lid (20), a drain pipe (41) tangentially and in at least the tilt angle the angle "γ" corresponding to the vessel to the lower part (23) of the drain line (40) and to the part of the cover (20) inclined towards the tap opening (20) parallel to the tilt axis (II) an angle to the lower part (23) " δ "drain pipe (31) is connected,
that the part of the drain pipes (31, 41) connected to the trough-shaped lowering (25) are designed as square pipes (32, 42) and
that identically designed and in close proximity provided mouths of the drain pipes (31, 41) have coupling parts (61, 62) to which connecting hoses (33, 43) can be coupled, and
that the drain pipes (31, 41) are connected to the transfer station (70), which has a vertical distance (c) from the deepest position of the tilted cover (20), which ensures safe drainage of the cooling medium due to gravity, taking into account all resistances allows.
Sprühgekühlter Deckel nach Anspruch 1,
dadurch gekennzeichnet,
daß im Scheitel der rinnenförmigen Absenkung (25> eine Trennwand (26) befestigt ist, die mit einer am Deckelrand (22) vorgesehenen Haube (27) einen Tunnel bildet,
daß der Tunnel (26, 27) im die Abflußleitungen (30, 40) aufweisenden Teil des Deckels (20) angeordnet ist und
daß eine Scheidewand (28) zum Trennen der den Abflußleitungen (30, 40) zuordnenbaren Kühlmittelströme aufweist.
Spray-cooled lid according to claim 1,
characterized,
that a partition (26) is fastened in the apex of the channel-shaped depression (25>), which forms a tunnel with a hood (27) provided on the lid edge (22),
that the tunnel (26, 27) in the drain lines (30, 40) having part of the cover (20) is arranged and
that a partition (28) for separating the coolant flows which can be assigned to the drain lines (30, 40).
Sprühgekühlter Deckel nach Anspruch 1,
dadurch gekennzeichnet,
daß das Vierkantrohr (42) sich über einen Bereich von 30 bis 40 Grad des Umfangwinkels des Deckels (20) erstreckt und dabei im Rand der Kippachse (II) ein Abstand (a) vom Deckelrand (22) von Größe 1/3 des Rohrdurchmessers der Abflußleitung (40) aufweist.
Spray-cooled lid according to claim 1,
characterized,
that the square tube (42) extends over a range of 30 to 40 degrees of the circumferential angle of the cover (20) and in the edge of the tilt axis (II) a distance (a) from the cover edge (22) of size 1/3 of the tube diameter of the Drain line (40).
Sprühgekühlter Deckel nach Anspruch 1,
dadurch gekennzeichnet,
daß die Mündung der Abflußrohre (31, 41) einen zur Längsachse (III) und zum Unterteil (23) des Deckels (20) gleichen Abstand aufweisen.
Spray-cooled lid according to claim 1,
characterized,
that the mouth of the drain pipes (31, 41) are at the same distance from the longitudinal axis (III) and from the lower part (23) of the cover (20).
Sprühgekühlter Deckel nach Anspruch 1,
dadurch gekennzeichnet,
daß an die Kupplungsstücke (61, 62) Anschlußschläuche (33, 43) kuppelbar sind, die unter einem Winkel "ε" von 10 Grad zur Horizantalen weggeführt anderenends an Rohrstücke (34, 44) ankuppelbar sind, die am Kopfende (81) eines Schwenkarmes (83) einer Schwenkvorrichtung (80) angeordnet sind.
Spray-cooled lid according to claim 1,
characterized,
that to the coupling pieces (61, 62) connecting hoses (33, 43) can be coupled, which, at an angle "ε" of 10 degrees to the horizontal, can be coupled at the other end to pipe pieces (34, 44) which are at the head end (81) of a swivel arm (83) a swivel device (80) are arranged.
Sprühgekühlter Deckel nach Anspruch 5,
dadurch gekennzeichnet,
daß der Schwenkarm (83) eine Schwenksäule (82) aufweist, die außerhalb des Ofengefäßes (10) unterhalb der Schwenkebene des Deckels (20) im Bereich der Kippachse (II) angeordnet ist und räumlich in einer Weise angeordnet ist, daß ein behinderungsfreies Schwenken des Deckels (20) einschließlich der Zu- und Abflußleitungen (30, 40, 50) erfolgen kann.
Spray-cooled lid according to claim 5,
characterized,
that the swivel arm (83) has a swivel column (82) which is arranged outside the furnace vessel (10) below the swivel plane of the cover (20) in the region of the tilt axis (II) and is arranged spatially in such a way that an unobstructed swiveling of the Cover (20) including the inlet and outlet lines (30, 40, 50) can be done.
Sprühgekühlter Deckel nach Anspruch 6,
dadurch gekennzeichnet,
daß die Schwenksäule (82) die Deckeldrehsäule (16) ist, an der der der Schwenkarm (83) einen Radius (r) von 0,5 bis 0,8 des Abstandes (R) von der Deckeldrehsäule (16) zur Mündung der Abflußrohre (31, 41) aufweist,
Spray-cooled lid according to claim 6,
characterized,
that the swivel column (82) is the swivel cover column (16) on which the swivel arm (83) has a radius (r) of 0.5 to 0.8 of the distance (R) from the swivel cover column (16) to the outlet of the drain pipes ( 31, 41),
Sprühgekühlter Deckel nach Anspruch 5,
dadurch gekennzeichnet,
daß Verbindungsschläuche (35, 45) vorgesehen sind, die einenends an den Rohrstücken (34, 44) und anderenends an Drehgelenken (36, 46) befestigt sind.
Spray-cooled lid according to claim 5,
characterized,
that connecting hoses (35, 45) are provided which are attached at one end to the pipe sections (34, 44) and at the other ends to swivel joints (36, 46).
Sprühgekühlter Deckel nach Anspruch 8,
dadurch gekennzeichnet,
daß die Drehgelenke (36, 46) am Kopfende von Abführrohren (37, 47) angeordnet sind, die fußendig mit der übergabestation (70) des Kühlmediums zum Werksnetz (79) verbunden sind.
Spray-cooled lid according to claim 8,
characterized,
that the swivel joints (36, 46) are arranged at the head end of discharge pipes (37, 47) which are connected at the bottom to the transfer station (70) of the cooling medium to the plant network (79).
Sprügekühlter Deckel nach einem der o.g. Ansprüche,
dadurch gekennzeichnet,
daß eine Zuführleitung (30) für das Kühlmittel vorgesehen ist, die mindestens im Bereich der Verbindungsschläuche (35, 45) koaxial zu den Abflußleitungen (30, 40) angeordnet ist.
Spray-cooled lid according to one of the above claims,
characterized,
that a supply line (30) for the coolant is provided, which is arranged at least in the region of the connecting hoses (35, 45) coaxially to the drain lines (30, 40).
EP93250064A 1992-03-24 1993-02-24 Spray-cooled cover Expired - Lifetime EP0562701B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/856,447 US5227119A (en) 1992-03-24 1992-03-24 Spray-cooled furnace cover
US856447 1992-03-24

Publications (2)

Publication Number Publication Date
EP0562701A1 true EP0562701A1 (en) 1993-09-29
EP0562701B1 EP0562701B1 (en) 1996-01-03

Family

ID=25323659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93250064A Expired - Lifetime EP0562701B1 (en) 1992-03-24 1993-02-24 Spray-cooled cover

Country Status (7)

Country Link
US (1) US5227119A (en)
EP (1) EP0562701B1 (en)
JP (1) JPH0642880A (en)
AT (1) ATE132614T1 (en)
DE (1) DE59301284D1 (en)
ES (1) ES2081685T3 (en)
ZA (1) ZA93227B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5936995A (en) * 1997-11-14 1999-08-10 Fuchs Systems, Inc. Electric arc furnace with scrap diverting panel and associated methods
DE19925550A1 (en) * 1999-06-04 2000-12-07 Sms Demag Ag Method and device for emptying metallurgical melting vessels by tilting
TW200930850A (en) * 2008-01-03 2009-07-16 Green Energy Technology Inc Cooling structure for body of crystal growth furnace

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002436A1 (en) * 1984-10-12 1986-04-24 Heggart Ronald G Furnace cooling system and method
US4789991A (en) * 1988-01-19 1988-12-06 Mannesmann Aktiengesellschaft Cooling system for electric arc furnaces
US4815096A (en) * 1988-03-08 1989-03-21 Union Carbide Corporation Cooling system and method for molten material handling vessels
US4849987A (en) * 1988-10-19 1989-07-18 Union Carbide Corporation Combination left and right handed furnace roof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002436A1 (en) * 1984-10-12 1986-04-24 Heggart Ronald G Furnace cooling system and method
US4789991A (en) * 1988-01-19 1988-12-06 Mannesmann Aktiengesellschaft Cooling system for electric arc furnaces
US4815096A (en) * 1988-03-08 1989-03-21 Union Carbide Corporation Cooling system and method for molten material handling vessels
US4849987A (en) * 1988-10-19 1989-07-18 Union Carbide Corporation Combination left and right handed furnace roof

Also Published As

Publication number Publication date
JPH0642880A (en) 1994-02-18
DE59301284D1 (en) 1996-02-15
ZA93227B (en) 1994-05-23
ATE132614T1 (en) 1996-01-15
US5227119A (en) 1993-07-13
EP0562701B1 (en) 1996-01-03
ES2081685T3 (en) 1996-03-16

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