EP3274641B1 - Device for the controlled filling of a tap opening - Google Patents

Device for the controlled filling of a tap opening Download PDF

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Publication number
EP3274641B1
EP3274641B1 EP16711562.5A EP16711562A EP3274641B1 EP 3274641 B1 EP3274641 B1 EP 3274641B1 EP 16711562 A EP16711562 A EP 16711562A EP 3274641 B1 EP3274641 B1 EP 3274641B1
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EP
European Patent Office
Prior art keywords
filling
opening
tapping
monitored
telescopic pipe
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EP16711562.5A
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German (de)
French (fr)
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EP3274641A1 (en
Inventor
Alexander Müller
Domenico Nardacchione
Christian Roser
Michael Schmid
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Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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Publication of EP3274641A1 publication Critical patent/EP3274641A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • 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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/19—Arrangements of devices for discharging
    • 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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085—Arc furnaces
    • 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
    • F27D19/00—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers

Definitions

  • the invention relates to a device for the controlled filling of a taphole, which is provided in a metallurgical furnace, with a refractory mass comprising a filling pipe having a lower opening and an upper opening, a container for the filling compound and a closure device, wherein the upper opening with interposition the closure device is connected to the container in such a way that the connection can be opened and closed by the closure device under the control of a control device, so that filler material falls through the fill tube by opening the closure device.
  • Metallurgical furnaces such.
  • electric arc furnaces are known in the art for a long time.
  • Such an electric arc furnace has a furnace vessel with a lid. Electrodes held by electrode holding arms and retractable and extendable into the oven vessel by opening in the lid are energized to form an arc.
  • feedstock such as scrap is melted to form a bath of molten steel.
  • the furnace vessel has a bottom with a refractory lining in which the bath is made of liquid steel.
  • the tapping opening is mounted in the bottom of the furnace vessel in such a way that, after the furnace vessel has returned to the starting position, the remaining sump is no longer above the tapping opening, so that it can be closed with a refractory filling compound before the next melting process.
  • To close the tapping opening is preferably a free-flowing Mass used (size and density similar to fine gravel). This is poured loose into the tap hole.
  • the tapping opening expands with the number of tapping operations, so that the amount of filling compound must be continuously increased. At the latest, if the wall of the taphole is too thin, the wall of the taphole must be replaced. The correct filling of the tap opening must be visually checked and confirmed by the operator.
  • the object of the invention is to provide a device for filling a tap opening, which solves the above problems.
  • a device according to claim 1 for the controlled filling of a tapping opening which is provided in a metallurgical furnace, with a refractory mass comprising a filling pipe with a lower opening and an upper opening, a container for the filling compound and a closure device wherein the upper opening is connected to the container with the interposition of the closure device so that the connection through the closure device under the control of a control device can be opened and closed, so that by opening the closure device filling compound falls through the filling pipe, and wherein the Verhellrohr as a telescopic tube is trained.
  • the telescopic tube descends to above the tapping opening into a working position. After filling, the telescopic tube is moved to a parking position. That is, the telescopic tube is not protected in the parking position of the hot gases through the tap hole and the associated chimney effect. This increases the service life of the filling pipe. Due to the intermediate circuit can flow through the upper opening, if necessary, free-flowing refractory filling compound under the action of gravity through the telescopic tube. The filling of the tap hole takes less time by the invention to complete. In addition, the invention provides a compact design for backfilling.
  • the telescopic tube is not limited to a round cross-section.
  • Another advantage is that at risk of overfilling the tap hole, the telescopic tube can be retracted quickly, so that the filling material does not fall out of the tap hole and thus can not accumulate in the tap hole and overfill it.
  • the telescopic tube preferably comprises at least a first partial section and at least one second telescopic partial section.
  • the telescopic tube preferably comprises at least a first partial section and at least one second telescopic partial section.
  • several, preferably coaxially in each case lying subsections may be possible.
  • Each of the inner sections can be pulled out of the next largest, which immediately envelops him.
  • the subsections are preferably designed as partial tubes.
  • the first section comprises the upper opening and the second section the lower opening, wherein the upper opening is connected to the container with the interposition of the closure device.
  • the second partial section preferably at least partially encloses the first partial section.
  • the second section can completely encase the first section.
  • the telescopic tube comprises a detection system, in particular an optical camera.
  • the telescopic tube comprises at least a first section with the upper opening and at least one second section with the lower opening, wherein the detection system is arranged in the region of the lower opening of the second section.
  • the detection system can be mounted directly next to the lower opening to a cultivation.
  • the detection system can also be arranged on a pivoting device.
  • a goal-oriented filling can be accomplished.
  • the visual control e.g. whether sufficient filling mass has been used and the tapping opening is sufficiently dense, be accomplished.
  • a main amount of filling compound can be introduced into the tapping opening.
  • a smaller amount of backfill mass can be poured back for filling. Of course, this can be repeated any number of times.
  • the telescopic tube is at least partially disposed on a manipulator.
  • the telescopic tube may include at least a first portion with the upper opening and at least a second portion with the lower opening, wherein the manipulator is at least partially disposed on the second portion.
  • the manipulator is designed as a transport carriage.
  • the transport carriage comprises a chain drive and an electric motor, e.g. a geared motor or a hydraulic motor.
  • the movement is via chain drive and electric motor, e.g. a gear motor or a hydraulic motor.
  • the transport carriage is therefore moved by means of a chain drive from the parking position to the working position.
  • the telescopic tube moves up on a transport slide to make the connection, from the opening in the lid of the arc furnace above the tap opening to the container above the lid.
  • the chain drive may be a worm drive.
  • the telescopic tube is tilted relative to the vertical.
  • the telescopic tube is tiltable by a tilting device relative to the vertical.
  • the telescopic tube can not travel vertically upwards but at an angle relative to the vertical, obliquely upward, in order to protect both the telescopic tube and the detection system.
  • the telescopic tube and the detection system is protected from heat radiation and exiting exhaust gases.
  • an exhaust pipe is provided on the telescopic tube to prevent the influx of exhaust gas into the container.
  • the telescopic tube comprises at least a first section with the upper opening and at least one second section with the lower opening, wherein the exhaust pipe is provided in the region of the lower opening to prevent the flow of exhaust gas into the container.
  • the filling material in the container is protected from hot exhaust gases.
  • the telescopic tube in the direction of the tapping opening on a heat shield. This is in particular provided between the tapping opening or the metallurgical furnace bottom and the optical camera in order to protect the optical camera from hot gases or heat as well as exhaust gases when filling the tapping opening.
  • a manual start of the backfilling is initially provided, wherein the telescopic tube is extendable with a transport slide over the tap hole in a working position and wherein the tap hole is filled with filling material, and wherein the filling material in the tap hole with a detection system is optically controllable, and wherein the Telescope tube is then retractable into a parking position.
  • Fig. 1 shows a filling tube designed as a telescopic tube. for controllably filling a tapping opening (not shown) provided in a metallurgical furnace (not shown) with a refractory mass from a container (not shown) for the filling mass.
  • the telescopic tube comprises a first section 1 with an upper opening 10 and a second section 2 with a lower opening 11.
  • the second section 2 is extendable.
  • the upper opening 10 is connected to the container with the interposition of a closure device (not shown) so that the connection through the closure device is openable and closable under the control of a control device (not shown), so that filling material is released through opening of the closure device Telescopic tube falls.
  • the closure device may comprise a hydraulic, pneumatic, electrical or piezoelectric slider for opening and closing the connection between telescopic tube and container. This slider is controlled by the controller.
  • the container is open at the top so that it is easily refillable.
  • FIG. 2 shows a second side view of the filling pipe according to the invention.
  • an optical camera 7 is arranged in the region of the lower opening 11 (FIG. FIG. 1 ) of the second section 2.
  • a heat shield 4 is arranged between the optical camera 7 and the tap opening.
  • the camera 7 and the telescopic tube is protected from heat and exhaust gases.
  • the sections 1.2 are formed as refractory clad pipes.
  • the second section 2 is held by a manipulator which is designed as a transport slide 5.
  • a manipulator allows a physical interaction with the environment.
  • the movement takes place via a chain drive chain 9 and an electric motor 6, such as a geared motor or a hydraulic motor.
  • the sand filling can be started manually.
  • the transport carriage 5 is moved by means of the chain drive from a parking position to a working position on the tap hole.
  • the second section 2 is pulled out.
  • the connection is made from the opening in the lid of the arc furnace over the tap hole to the container above the lid.
  • the lower opening 11 ( FIG. 1 ) is therefore in a position in which the filling material falling through the telescopic tube falls into the tapping opening.
  • the closure device (not shown) to the container for the filling compound can be opened (optionally this is already open and in the container filling material is poured for filling) and the sand filling for the taphole can begin.
  • the correct filling of the tapping opening can now be checked with the optical camera 7.
  • the telescopic tube is raised to a parking position.
  • the camera 7 may be provided on a pivotable pivoting device (not shown).
  • the telescopic tube is opposite a vertical 12 ( FIG. 1 ) by an angle ⁇ ( FIG. 1 ) tilted.
  • the telescopic tube does not travel vertically upwards, but at an angle ⁇ (FIG. FIG. 1 ) aslant;
  • ⁇ FIG. 1
  • the telescopic tube and the camera 7 are protected from heat radiation and exiting exhaust gases.
  • an exhaust pipe 3 is provided to prevent an influx of exhaust gas into the container.
  • the invention enables a simple and controlled filling of the tap opening. Overfilling can be avoided according to the invention. In addition, the invention increases the life of the filling pipe according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum kontrollierten Verfüllen einer Abstichöffnung, die in einem metallurgischen Ofen vorgesehen ist, mit einer feuerfesten Masse umfassend ein Verfüllrohr mit einer unteren Öffnung und einer oberen Öffnung, einen Behälter für die Verfüllmasse und eine Verschlussvorrichtung, wobei die obere Öffnung unter Zwischenschaltung der Verschlussvorrichtung so mit dem Behälter verbunden ist, dass die Verbindung durch die Verschlussvorrichtung unter Steuerung durch eine Steuervorrichtung öffenbar und verschließbar ist, so dass durch Öffnen der Verschlussvorrichtung Verfüllmasse durch das Verfüllrohr fällt.The invention relates to a device for the controlled filling of a taphole, which is provided in a metallurgical furnace, with a refractory mass comprising a filling pipe having a lower opening and an upper opening, a container for the filling compound and a closure device, wherein the upper opening with interposition the closure device is connected to the container in such a way that the connection can be opened and closed by the closure device under the control of a control device, so that filler material falls through the fill tube by opening the closure device.

Metallurgische Öfen, wie z. B. elektrische Lichtbogenöfen, sind im Stand der Technik seit langem bekannt. Ein solcher elektrischer Lichtbogenofen weist ein Ofengefäß mit einem Deckel auf. Elektroden, die von Elektrodenhaltearmen gehalten und durch Öffnung im Deckel in das Ofengefäß einfahrbar und ausfahrbar sind, werden zur Ausbildung eines Lichtbogens mit Strom versorgt. Mittels des Lichtbogens wird Einsatzmaterial wie Schrott geschmolzen, so dass ein Bad aus flüssigem Stahl entsteht. Das Ofengefäß weist einen Boden mit einer Feuerfestverkleidung, in der das Bad aus flüssigem Stahl steht, auf. In der Unterseite des Ofengefäßes ist eine Abstichöffnung vorgesehen, über die der flüssige Stahl aus dem Ofengefäß entnommen (= abgestochen) wird. Üblicherweise wird nicht die gesamte Masse des flüssigen Stahls abgestochen, sondern es verbleibt eine Restmenge (Sumpf). Zum Abstechen wird das Ofengefäß üblicherweise über eine Wiege gekippt. Die Abstichöffnung ist im Boden des Ofengefäßes derart angebracht, dass nach dem Zurückkippen des Ofengefäßes in die Ausgangsposition der verbleibende Sumpf nicht mehr über der Abstichöffnung steht, so dass diese mit einer feuerfesten Verfüllmasse vor dem nächsten Schmelzvorgang verschlossen werden kann. Zum Verschließen der Abstichöffnung wird bevorzugt eine rieselfähige Masse eingesetzt (Größe und Dichte ähnlich feinem Kies). Dieser wird lose in die Abstichöffnung eingeschüttet. Die Abstichöffnung weitet sich zudem mit Anzahl der Abstichvorgänge auf, so dass die Menge an Verfüllmasse kontinuierlich erhöht werden muss. Spätestens, wenn die Mauerung der Abstichöffnung zu dünn wird, muss die Mauerung der Abstichöffnung ausgetauscht werden. Die korrekte Verfüllung der Abstichöffnung muss optisch geprüft und vom Operator bestätigt werden. Bei falscher, insbesondere zu geringer Verfüllung, kann sich Stahl durch einen Abstichkanal durchfressen und es kann zu einem unkontrollierten Ablassen von flüssigem Stahl kommen. Das Verfüllen der Abstichöffnung wird manuell ausgeführt. Dabei wird die Verfüllmasse in Eimern in die Abstichöffnung gefüllt und optisch kontrolliert. Dies nimmt Zeit in Anspruch und hängt zudem von der Erfahrung des Operators ab. Weiter beschreiben die CN 202155494 U und die WO 2011/009579 A1 Rohre, über die der Sand in die Abstichöffnung treffgenau geleitet werden kann.Metallurgical furnaces, such. As electric arc furnaces are known in the art for a long time. Such an electric arc furnace has a furnace vessel with a lid. Electrodes held by electrode holding arms and retractable and extendable into the oven vessel by opening in the lid are energized to form an arc. Using the arc, feedstock such as scrap is melted to form a bath of molten steel. The furnace vessel has a bottom with a refractory lining in which the bath is made of liquid steel. In the bottom of the furnace vessel a tapping opening is provided, via which the liquid steel is taken from the furnace vessel (= tapped). Usually, not the entire mass of the liquid steel is tapped, but it remains a residual amount (bottom). To cut off the oven vessel is usually tilted over a cradle. The tapping opening is mounted in the bottom of the furnace vessel in such a way that, after the furnace vessel has returned to the starting position, the remaining sump is no longer above the tapping opening, so that it can be closed with a refractory filling compound before the next melting process. To close the tapping opening is preferably a free-flowing Mass used (size and density similar to fine gravel). This is poured loose into the tap hole. In addition, the tapping opening expands with the number of tapping operations, so that the amount of filling compound must be continuously increased. At the latest, if the wall of the taphole is too thin, the wall of the taphole must be replaced. The correct filling of the tap opening must be visually checked and confirmed by the operator. In case of wrong, in particular too low backfilling, steel can be eaten through a tapping channel and it can lead to an uncontrolled discharge of molten steel. The filling of the tap hole is done manually. The filling compound is filled in buckets in the tap hole and visually inspected. This takes time and depends on the experience of the operator. Next describe the CN 202155494 U and the WO 2011/009579 A1 Pipes through which the sand can be directed precisely into the tap hole.

Die Aufgabe der Erfindung ist die Angabe einer Vorrichtung zum Verfüllen einer Abstichöffnung, welche die oben genannten Probleme löst.The object of the invention is to provide a device for filling a tap opening, which solves the above problems.

Die Aufgabe wird gelöst durch die Angabe einer Vorrichtung gemäss Anspruch 1 zum kontrollierten Verfüllen einer Abstichöffnung, die in einem metallurgischen Ofen vorgesehen ist, mit einer feuerfesten Masse umfassend ein Verfüllrohr mit einer unteren Öffnung und einer oberen Öffnung, einen Behälter für die Verfüllmasse und eine Verschlussvorrichtung, wobei die obere Öffnung unter Zwischenschaltung der Verschlussvorrichtung so mit dem Behälter verbunden ist, dass die Verbindung durch die Verschlussvorrichtung unter Steuerung durch eine Steuervorrichtung öffenbar und verschließbar ist, so dass durch Öffnen der Verschlussvorrichtung Verfüllmasse durch das Verfüllrohr fällt, und wobei das Verfüllrohr als Teleskoprohr ausgebildet ist. Dadurch ist ein einfaches und sicheres Verfüllen möglich. Die Verfüllung kann manuell gestartet werden. Dazu fährt das Teleskoprohr herab bis über die Abstichöffnung in eine Arbeitsposition. Nach Verfüllen wird das Teleskoprohr in eine Parkposition gefahren. D.h. das Teleskoprohr ist in der Parkposition nicht den heißen Gasen durch die Abstichöffnung und den dazugehörigen Kamineffekt geschützt. Dadurch erhöht sich die Lebensdauer des Verfüllrohres. Durch die Zwischenschaltung kann durch die obere Öffnung bedarfsweise rieselfähige feuerfeste Verfüllmasse unter Wirkung der Schwerkraft durch das Teleskoprohr fallen. Das Verfüllen der Abstichöffnung nimmt durch die Erfindung weniger Zeit in Anspruch. Zudem wird durch die Erfindung eine kompakte Bauweise zur Verfüllung geschaffen. Dabei ist das Teleskoprohr nicht auf einen runden Querschnitt beschränkt.The object is achieved by the indication of a device according to claim 1 for the controlled filling of a tapping opening, which is provided in a metallurgical furnace, with a refractory mass comprising a filling pipe with a lower opening and an upper opening, a container for the filling compound and a closure device wherein the upper opening is connected to the container with the interposition of the closure device so that the connection through the closure device under the control of a control device can be opened and closed, so that by opening the closure device filling compound falls through the filling pipe, and wherein the Verfüllrohr as a telescopic tube is trained. This makes a simple and safe backfilling possible. The backfilling can be started manually. To do this, the telescopic tube descends to above the tapping opening into a working position. After filling, the telescopic tube is moved to a parking position. That is, the telescopic tube is not protected in the parking position of the hot gases through the tap hole and the associated chimney effect. This increases the service life of the filling pipe. Due to the intermediate circuit can flow through the upper opening, if necessary, free-flowing refractory filling compound under the action of gravity through the telescopic tube. The filling of the tap hole takes less time by the invention to complete. In addition, the invention provides a compact design for backfilling. The telescopic tube is not limited to a round cross-section.

Ein weiterer Vorteil besteht darin, dass bei Gefahr des Überfüllens der Abstichöffnung das Teleskoprohr schnell eingefahren werden kann, so dass die Verfüllmasse nicht über der Abstichöffnung herausfallen und sich somit nicht in der Abstichöffnung ansammeln und diese überfüllen kann.Another advantage is that at risk of overfilling the tap hole, the telescopic tube can be retracted quickly, so that the filling material does not fall out of the tap hole and thus can not accumulate in the tap hole and overfill it.

In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden können, um weitere Vorteile zu erzielen.In the dependent claims further advantageous measures are listed, which can be combined with each other in order to achieve further advantages.

Bevorzugt umfasst das Teleskoprohr zumindest einen ersten Teilabschnitt und zumindest einen zweiten ausziehbaren Teilabschnitt. Selbstverständlich können auch mehrere, bevorzugt koaxial jeweils ineinander liegende Teilabschnitte möglich sein. Jeder der inneren Teilabschnitte kann aus dem jeweils nächstgrößeren, der ihn unmittelbar umhüllt, ausgezogen werden. Dabei sind die Teilabschnitte bevorzugt als Teilröhren ausgebildet.The telescopic tube preferably comprises at least a first partial section and at least one second telescopic partial section. Of course, several, preferably coaxially in each case lying subsections may be possible. Each of the inner sections can be pulled out of the next largest, which immediately envelops him. The subsections are preferably designed as partial tubes.

Der erste Teilabschnitt umfasst die obere Öffnung und der zweite Teilabschnitt die untere Öffnung, wobei die obere Öffnung unter Zwischenschaltung der Verschlussvorrichtung an den Behälter angebunden ist.The first section comprises the upper opening and the second section the lower opening, wherein the upper opening is connected to the container with the interposition of the closure device.

Bevorzugt umhüllt der zweite Teilabschnitt den ersten Teilabschnitt zumindest teilweise. Auch kann der zweite Teilabschnitt den ersten Teilabschnitt selbstverständlich ganz umhüllen.The second partial section preferably at least partially encloses the first partial section. Of course, the second section can completely encase the first section.

In bevorzugter Ausgestaltung umfasst das Teleskoprohr ein Erfassungssystem, insbesondere eine optische Kamera. Auch andere, insbesondere visuelle Erfassungssysteme sind jedoch denkbar. In einem weiteren bevorzugten Ausführungsbeispiel umfasst das Teleskoprohr zumindest einen ersten Teilabschnitt mit der oberen Öffnung und zumindest einen zweiten Teilabschnitt mit der unteren Öffnung, wobei das Erfassungssystem im Bereich der unteren Öffnung des zweiten Teilabschnitts angeordnet ist. Dabei kann das Erfassungssystem direkt neben der unteren Öffnung an einem Anbau angebracht sein. Das Erfassungssystem kann auch auf einer Schwenkvorrichtung angeordnet sein. Mit dem Erfassungssystem kann eine Überfüllung der Abstichöffnung mit Verfüllmasse sehr einfach vermieden werden, indem sehr einfach eine visuelle Kontrolle ausgeführt wird. Auf Basis des Ergebnisses kann bei zu wenig Befüllung noch zusätzliche Verfüllmasse eingebracht werden. Auch kann ein zielorientiertes Einfüllen bewerkstelligt werden. Auch kann die visuelle Kontrolle, z.B. ob genügend Verfüllmasse verwendet wurde und die Abstichöffnung ausreichend dicht ist, bewerkstelligt werden. Dadurch kann zudem zunächst zuerst eine Hauptmenge an Verfüllmasse in die Abstichöffnung eingebracht werden. Nach anschließender Erfassung der bereits getätigten Verfüllung, kann danach bedarfsweise noch eine kleinere Menge an Verfüllmasse zum Verfüllen nachgeschüttet werden. Dies kann selbstverständlich beliebig oft wiederholt werden.In a preferred embodiment, the telescopic tube comprises a detection system, in particular an optical camera. However, other, in particular visual detection systems are conceivable. In a further preferred embodiment, the telescopic tube comprises at least a first section with the upper opening and at least one second section with the lower opening, wherein the detection system is arranged in the region of the lower opening of the second section. In this case, the detection system can be mounted directly next to the lower opening to a cultivation. The detection system can also be arranged on a pivoting device. With the detection system overfilling of the taphole with filling compound can be very easily avoided by a very simple visual control is performed. On the basis of the result, if there is too little filling, additional filling compound can be introduced. Also, a goal-oriented filling can be accomplished. Also, the visual control, e.g. whether sufficient filling mass has been used and the tapping opening is sufficiently dense, be accomplished. As a result, first of all, first of all, a main amount of filling compound can be introduced into the tapping opening. After subsequent detection of the already done backfilling, then, if necessary, a smaller amount of backfill mass can be poured back for filling. Of course, this can be repeated any number of times.

Bevorzugt ist das Teleskoprohr zumindest teilweise an einem Manipulator angeordnet. Auch kann das Teleskoprohr zumindest einen ersten Teilabschnitt mit der oberen Öffnung und zumindest einen zweiten Teilabschnitt mit der unteren Öffnung umfassen, wobei der Manipulator zumindest teilweise am zweiten Teilabschnitt angeordnet ist.Preferably, the telescopic tube is at least partially disposed on a manipulator. Also, the telescopic tube may include at least a first portion with the upper opening and at least a second portion with the lower opening, wherein the manipulator is at least partially disposed on the second portion.

In einem weiteren bevorzugten Ausführungsbeispiel ist der Manipulator als ein Transportschlitten ausgestaltet. Dadurch kann das Teleskoprohr einfach ausgezogen und wieder eingefahren werden. In einem weiteren bevorzugten Ausführungsbeispiel weist der Transportschlitten einen Kettenantrieb und einen elektrischen Motor, z.B. einen Getriebemotor oder einen Hydraulikmotor auf. Die Bewegung erfolgt über Kettenantrieb und elektrischen Motor, z.B. einen Getriebemotor oder einen Hydraulikmotor. Der Transportschlitten wird daher mittels eines Kettenantriebs von der Parkposition in die Arbeitsposition gefahren. Das Teleskoprohr fährt auf einem Transportschlitten nach oben, um die Verbindung, von der Öffnung im Deckel des Lichtbogenofens über der Abstichöffnung zum Behälter über dem Deckel herzustellen. Dabei kann es sich bei dem Kettenantrieb um einen Schneckenantrieb handeln. Durch den Kettenantrieb können auch unkontrollierte Bewegungen, insbesondere Abwärtsbewegungen des Transportschlittens vermieden werden. Eine Möglichkeit hierzu ist, dass der Kettenantrieb elektrisch funktioniert und blockiert wird, sobald die Stromzufuhr automatisch abgestellt wird.In a further preferred embodiment, the manipulator is designed as a transport carriage. As a result, the telescopic tube can be easily pulled out and retracted. In a further preferred embodiment, the transport carriage comprises a chain drive and an electric motor, e.g. a geared motor or a hydraulic motor. The movement is via chain drive and electric motor, e.g. a gear motor or a hydraulic motor. The transport carriage is therefore moved by means of a chain drive from the parking position to the working position. The telescopic tube moves up on a transport slide to make the connection, from the opening in the lid of the arc furnace above the tap opening to the container above the lid. The chain drive may be a worm drive. By the chain drive and uncontrolled movements, in particular downward movements of the transport carriage can be avoided. One possibility for this is that the chain drive operates electrically and is blocked as soon as the power supply is switched off automatically.

In einem weiteren bevorzugten Ausführungsbeispiel ist das Teleskoprohr gegenüber der Vertikalen verkippt. In bevorzugter Ausgestaltung ist das Teleskoprohr durch eine Verkippvorrichtung gegenüber der Vertikalen verkippbar. Dadurch kann das Teleskoprohr nicht senkrecht nach oben, sondern in einem Winkel gegenüber der Vertikalen schräg nach oben fahren, um sowohl das Teleskoprohr als auch das Erfassungssystem zu schützen. Dadurch wird das Teleskoprohr als auch das Erfassungssystem vor Hitzestrahlung und austretenden Abgasen geschützt.In a further preferred embodiment, the telescopic tube is tilted relative to the vertical. In a preferred embodiment, the telescopic tube is tiltable by a tilting device relative to the vertical. As a result, the telescopic tube can not travel vertically upwards but at an angle relative to the vertical, obliquely upward, in order to protect both the telescopic tube and the detection system. As a result, the telescopic tube and the detection system is protected from heat radiation and exiting exhaust gases.

Bevorzugt ist am Teleskoprohr ein Abgasrohr vorgesehen, um das Einströmen von Abgas in den Behälter zu verhindern. In einer bevorzugten Ausgestaltung umfasst das Teleskoprohr zumindest einen ersten Teilabschnitt mit der oberen Öffnung und zumindest einen zweiten Teilabschnitt mit der unteren Öffnung, wobei das Abgasrohr im Bereich der unteren Öffnung vorgesehen ist, um das Einströmen von Abgas in den Behälter zu verhindern. Somit wird die Verfüllmasse im Behälter vor heißen Abgasen geschützt.Preferably, an exhaust pipe is provided on the telescopic tube to prevent the influx of exhaust gas into the container. In a preferred embodiment, the telescopic tube comprises at least a first section with the upper opening and at least one second section with the lower opening, wherein the exhaust pipe is provided in the region of the lower opening to prevent the flow of exhaust gas into the container. Thus, the filling material in the container is protected from hot exhaust gases.

In bevorzugter Ausgestaltung weist das Teleskoprohr in Richtung der Abstichöffnung ein Hitzeschild auf. Diese ist insbesondere zwischen der Abstichöffnung bzw. dem metallurgischen Ofenboden und der optischen Kamera vorgesehen, um die optische Kamera vor heißen Gasen bzw. Hitze als auch Abgasen beim Verfüllen der Abstichöffnung zu schützen.In a preferred embodiment, the telescopic tube in the direction of the tapping opening on a heat shield. This is in particular provided between the tapping opening or the metallurgical furnace bottom and the optical camera in order to protect the optical camera from hot gases or heat as well as exhaust gases when filling the tapping opening.

Bevorzugt ist zunächst ein manueller Start der Verfüllung vorgesehen, wobei das Teleskoprohr mit einem Transportschlitten über die Abstichöffnung in eine Arbeitsposition ausfahrbar ist und wobei die Abstichöffnung mit Verfüllmasse verfüllbar ist, und wobei die Verfüllmasse im Bereich der Abstichöffnung mit einem Erfassungssystem optisch kontrollierbar ist und wobei das Teleskoprohr anschließend in eine Parkposition einfahrbar ist.Preferably, a manual start of the backfilling is initially provided, wherein the telescopic tube is extendable with a transport slide over the tap hole in a working position and wherein the tap hole is filled with filling material, and wherein the filling material in the tap hole with a detection system is optically controllable, and wherein the Telescope tube is then retractable into a parking position.

Weitere Merkmale, Eigenschaften und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die beiliegenden Figuren. Darin zeigen schematisch:

FIG 1:
eine erste Seitenansicht eines erfindungsgemäßen Verfüllrohres,
FIG 2:
eine zweite Seitenansicht des erfindungsgemäßen Verfüllrohres,
Further features, properties and advantages of the present invention will become apparent from the following description with reference to the accompanying figures. In it show schematically:
FIG. 1:
a first side view of a filling pipe according to the invention,
2:
a second side view of the filling pipe according to the invention,

Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschrieben wurde, ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt. Variationen hiervon können vom Fachmann abgeleitet werden, ohne den Schutzumfang der Erfindung, wie er durch die nachfolgenden Patentansprüche definiert wird, zu verlassen.Although the invention has been illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples. Variations thereof may be derived by those skilled in the art without departing from the scope of the invention as defined by the appended claims.

Fig. 1 zeigt ein als Teleskoprohr ausgestaltetes Verfüllrohr. zum kontrollierten Verfüllen einer Abstichöffnung (nicht gezeigt), die in einem metallurgischen Ofen (nicht gezeigt) vorgesehen ist, mit einer feuerfesten Masse aus einem Behälter (nicht gezeigt) für die Verfüllmasse. Dabei umfasst das Teleskoprohr einen ersten Teilabschnitt 1 mit einer oberen Öffnung 10 und einen zweiten Teilabschnitt 2 mit einer unteren Öffnung 11. Dabei ist der zweite Teilabschnitt 2 ausziehbar. Auch ist die obere Öffnung 10 unter Zwischenschaltung einer Verschlussvorrichtung (nicht gezeigt) so mit dem Behälter verbunden, dass die Verbindung durch die Verschlussvorrichtung unter Steuerung durch eine Steuervorrichtung (nicht gezeigt) öffenbar und verschließbar ist, so dass durch das Öffnen der Verschlussvorrichtung Verfüllmasse durch das Teleskoprohr fällt. Die Verschlussvorrichtung kann einen hydraulischen, pneumatischen, elektrischen oder piezoelektrischen Schieber zum Öffnen und Verschließen der Verbindung zwischen Teleskoprohr und Behälter aufweisen. Dieser Schieber wird durch die Steuerung gesteuert. Der Behälter ist oben offen, so dass er leicht nachfüllbar ist. Fig. 1 shows a filling tube designed as a telescopic tube. for controllably filling a tapping opening (not shown) provided in a metallurgical furnace (not shown) with a refractory mass from a container (not shown) for the filling mass. In this case, the telescopic tube comprises a first section 1 with an upper opening 10 and a second section 2 with a lower opening 11. In this case, the second section 2 is extendable. Also, the upper opening 10 is connected to the container with the interposition of a closure device (not shown) so that the connection through the closure device is openable and closable under the control of a control device (not shown), so that filling material is released through opening of the closure device Telescopic tube falls. The closure device may comprise a hydraulic, pneumatic, electrical or piezoelectric slider for opening and closing the connection between telescopic tube and container. This slider is controlled by the controller. The container is open at the top so that it is easily refillable.

FIG 2 zeigt eine zweite Seitenansicht des erfindungsgemäßen Verfüllrohres. Im Bereich der unteren Öffnung 11 (FIG 1) des zweiten Teilabschnitts 2 ist eine optische Kamera 7 angeordnet. Zwischen der optischen Kamera 7 und der Abstichöffnung ist ein Hitzeschild 4 angeordnet. Somit wird die Kamera 7 und das Teleskoprohr vor Hitzeeinwirkung und Abgasen geschützt. FIG. 2 shows a second side view of the filling pipe according to the invention. In the region of the lower opening 11 (FIG. FIG. 1 ) of the second section 2, an optical camera 7 is arranged. Between the optical camera 7 and the tap opening a heat shield 4 is arranged. Thus, the camera 7 and the telescopic tube is protected from heat and exhaust gases.

Die Teilabschnitte 1,2 sind als feuerfeste verkleidete Rohre ausgebildet.The sections 1.2 are formed as refractory clad pipes.

Der zweite Teilabschnitt 2 wird durch einen Manipulator gehalten, der als Transportschlitten 5 ausgebildet ist. Ein Manipulator ermöglicht eine physikalische Interaktion mit der Umgebung.The second section 2 is held by a manipulator which is designed as a transport slide 5. A manipulator allows a physical interaction with the environment.

Die Bewegung erfolgt über eine Getriebekette 9 mit Kettenantrieb und einen elektrischen Motor 6, z.B. einen Getriebemotor oder einen Hydraulikmotor. Die Sandverfüllung kann manuell gestartet werden. Der Transportschlitten 5 wird mittels des Kettenantriebs von einer Parkposition in eine Arbeitsposition über der Abstichöffnung gefahren. Somit wird der zweite Teilabschnitt 2 ausgezogen. Damit wird die Verbindung, von der Öffnung im Deckel des Lichtbogenofens über der Abstichöffnung zum Behälter über dem Deckel hergestellt. Die untere Öffnung 11 (FIG 1) befindet sich daher in einer Position, in der die Verfüllmasse, welche durch das Teleskoprohr fällt, in die Abstichöffnung fällt. Die Verschlussvorrichtung (nicht gezeigt) zum Behälter für die Verfüllmasse kann geöffnet werden (wahlweise ist diese schon offen und in den Behälter wird Verfüllmasse zum Verfüllen geschüttet) und die Sandverfüllung für die Abstichöffnung kann beginnen. Mit der optischen Kamera 7 kann nun die korrekte Verfüllung der Abstichöffnung kontrolliert werden. Nach der korrekten Verfüllung wird das Teleskoprohr in eine Parkposition hochgefahren. Dabei kann die Kamera 7 an einer schwenkbaren Schwenkeinrichtung (nicht gezeigt) vorgesehen sein.The movement takes place via a chain drive chain 9 and an electric motor 6, such as a geared motor or a hydraulic motor. The sand filling can be started manually. The transport carriage 5 is moved by means of the chain drive from a parking position to a working position on the tap hole. Thus, the second section 2 is pulled out. Thus, the connection is made from the opening in the lid of the arc furnace over the tap hole to the container above the lid. The lower opening 11 ( FIG. 1 ) is therefore in a position in which the filling material falling through the telescopic tube falls into the tapping opening. The closure device (not shown) to the container for the filling compound can be opened (optionally this is already open and in the container filling material is poured for filling) and the sand filling for the taphole can begin. The correct filling of the tapping opening can now be checked with the optical camera 7. After correct filling, the telescopic tube is raised to a parking position. In this case, the camera 7 may be provided on a pivotable pivoting device (not shown).

Das Teleskoprohr ist gegenüber einer Vertikalen 12 (FIG 1) um einen Winkel α (FIG 1) verkippt. Um das Teleskoprohr und die Kamera 7 zu schützen, fährt das Teleskoprohr daher nicht senkrecht nach oben, sondern in einem Winkel α (FIG 1) schräg; somit sind das Teleskoprohr und die Kamera 7 vor Hitzestrahlung und austretenden Abgasen geschützt.The telescopic tube is opposite a vertical 12 ( FIG. 1 ) by an angle α ( FIG. 1 ) tilted. In order to protect the telescopic tube and the camera 7, therefore, the telescopic tube does not travel vertically upwards, but at an angle α (FIG. FIG. 1 ) aslant; Thus, the telescopic tube and the camera 7 are protected from heat radiation and exiting exhaust gases.

Am Teleskoprohr ist, insbesondere im Bereich der Kamera 7, ein Abgasrohr 3 vorgesehen, um ein Einströmen von Abgas in den Behälter zu verhindern.At the telescopic tube, in particular in the region of the camera 7, an exhaust pipe 3 is provided to prevent an influx of exhaust gas into the container.

Durch die Erfindung ist ein einfaches und kontrolliertes Verfüllen der Abstichöffnung möglich. Überfüllung kann erfindungsgemäß vermieden werden. Zudem erhöht die Erfindung die Lebensdauer des erfindungsgemäßen Verfüllrohrs.The invention enables a simple and controlled filling of the tap opening. Overfilling can be avoided according to the invention. In addition, the invention increases the life of the filling pipe according to the invention.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
erstes Teilrohrfirst part pipe
22
zweites Teilrohr ausziehbarsecond partial tube extendable
33
Abgasrohrexhaust pipe
44
Hitzeschildheat shield
55
Manipulatormanipulator
66
elektrischer Getriebemotorelectric geared motor
77
optische Kameraoptical camera
88th
Transportschlittentransport carriage
99
Getriebekettetransmission chain
1010
obere Öffnungupper opening
1111
untere Öffnunglower opening
1212
Vertikalevertical
αα
Winkelcorner

Claims (15)

  1. Device for the monitored filling of a tapping opening, which is provided in a metallurgical furnace, with a refractory material, comprising a filling pipe with a lower opening (11) and an upper opening (10), a container for the filling material and a closure device, wherein the upper opening (10) is connected to the container, with the closure device interposed, in such a way that the connection can be opened and closed by the closure device under the control of a control device, so that, by opening the closure device, filling material falls through the filling pipe,
    characterized in that
    the filling pipe is formed as a telescopic pipe, wherein the telescopic pipe is arranged at least partially on a transporting carriage, the telescopic pipe comprises at least a first portion (1) with the upper opening (10) and at least a second portion (2) with the lower opening and the transporting carriage is arranged at least partially on the second portion (2) .
  2. Device for the monitored filling of a tapping opening according to Claim 1,
    characterized in that
    the telescopic pipe comprises at least a first portion (1) and at least a second extendable portion (2).
  3. Device for the monitored filling of a tapping opening according to Claim 2,
    characterized in that
    the first portion (1) comprises the upper opening (10) and the second portion (2) comprises the lower opening (11), wherein the upper opening (10) is attached to the container with the closure device interposed.
  4. Device for the monitored filling of a tapping opening according to either of Claims 2 and 3,
    characterized in that
    the second portion (2) at least partially encloses the first portion (1).
  5. Device for the monitored filling of a tapping opening according to one of the preceding claims,
    characterized in that
    the telescopic pipe comprises a recording system, in particular an optical camera (7).
  6. Device for the monitored filling of a tapping opening according to one of the preceding Claims 1-4,
    characterized in that a recording system, in particular an
    optical camera (7), is provided for recording the filling by filling material.
  7. Device for the monitored filling of a tapping opening according to either of the preceding Claims 5 and 6,
    characterized in that
    the recording system is provided on a pivotable pivoting device.
  8. Device for the monitored filling of a tapping opening according to one of the preceding Claims 5-7,
    characterized in that
    the telescopic pipe comprises at least a first portion (1) with the upper opening (10) and at least a second portion (2) with the lower opening (11) and the recording system is arranged in the region of the lower opening (11) of the second portion (2).
  9. Device for the monitored filling of a tapping opening according to Claim 1,
    characterized in that
    the transporting carriage (5) has a chain drive and an electric motor 6), in particular a geared motor or a hydraulic motor.
  10. Device for the monitored filling of a tapping opening according to one of the preceding claims,
    characterized in that
    the telescopic pipe is tilted with respect to a vertical (12).
  11. Device for the monitored filling of a tapping opening according to one of the preceding Claims 1-10,
    characterized in that
    the telescopic pipe can be tilted with respect to a vertical (12) by a tilting device.
  12. Device for the monitored filling of a tapping opening according to one of the preceding claims,
    characterized in that
    an exhaust pipe (3) is provided on the telescopic pipe in order to prevent exhaust gas from flowing into the container.
  13. Device for the monitored filling of a tapping opening according to Claim 12,
    characterized in that
    the telescopic pipe comprises at least a first portion (1) with the upper opening (10) and at least a second portion (2) with the lower opening (11) and the exhaust pipe (3) is provided in the region of the lower opening (11) in order to prevent exhaust gas from flowing into the container.
  14. Device for the monitored filling of a tapping opening according to one of the preceding claims,
    characterized in that
    the telescopic pipe has a heat shield (4) in the direction of the tapping opening.
  15. Device for the monitored filling of a tapping opening according to one of the preceding claims,
    characterized in that
    first a manual start of the filling is provided, wherein the telescopic pipe can be extended with a transporting carriage (5) over the tapping opening into an active position and wherein the tapping opening can be filled with filling material, and wherein the filling material can be optically monitored in the region of the tapping opening by a recording system and wherein the telescopic pipe can subsequently be retracted into an inactive position.
EP16711562.5A 2015-03-25 2016-03-15 Device for the controlled filling of a tap opening Active EP3274641B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202015002221.9U DE202015002221U1 (en) 2015-03-25 2015-03-25 Device for the controlled filling of a taphole
PCT/EP2016/055559 WO2016150765A1 (en) 2015-03-25 2016-03-15 Device for the controlled filling of a tap opening

Publications (2)

Publication Number Publication Date
EP3274641A1 EP3274641A1 (en) 2018-01-31
EP3274641B1 true EP3274641B1 (en) 2019-02-20

Family

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Application Number Title Priority Date Filing Date
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Country Link
EP (1) EP3274641B1 (en)
CN (1) CN208042794U (en)
DE (1) DE202015002221U1 (en)
RU (1) RU183114U1 (en)
TR (1) TR201904145T4 (en)
WO (1) WO2016150765A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU569600A1 (en) * 1975-12-04 1977-08-25 Предприятие П/Я А-3244 Device for closing converter tap holes
SU812831A1 (en) * 1979-03-19 1981-03-15 Липецкое Отделение Государственногоордена Трудового Красного Знаменисоюзного Института По Проектированиюагрегатов Сталеплавильного Ипрокатного Производства Длячерной Металлургии Device for preventing slag outlet from convertor to steel casting ladle
GB0002895D0 (en) * 2000-02-08 2000-03-29 Goricon Metallurg Services Improvements relating to plug members for steel furnaces
WO2011009579A1 (en) * 2009-07-20 2011-01-27 Fuchs Technology Holding Ag Sealing and filling device for a metallurgical furnace, metallurgical furnace, and method for tapping the metallurgical furnace.
RU2415950C1 (en) * 2009-11-02 2011-04-10 Общество с ограниченной ответственностью ПКФ "Металлургкомплектснаб" (ООО ПКФ "Металлургкомплектснаб") Stopper for cut off of converter primary slag, applicator for landing stopper into tap hole of converter, system of converter primary slag cut off and procedure for converter primary slag cut off
CN202155494U (en) * 2011-07-18 2012-03-07 永兴特种不锈钢股份有限公司 Stuffing sand pouring device
CN202576460U (en) * 2012-02-13 2012-12-05 北京科技大学 Blast furnace auxiliary device used for blast-furnace casting and taphole blocking

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
WO2016150765A1 (en) 2016-09-29
TR201904145T4 (en) 2019-05-21
RU183114U1 (en) 2018-09-11
DE202015002221U1 (en) 2015-04-22
CN208042794U (en) 2018-11-02
EP3274641A1 (en) 2018-01-31

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