EP2545747A1 - Electrode support arm system - Google Patents

Electrode support arm system

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Publication number
EP2545747A1
EP2545747A1 EP11707833A EP11707833A EP2545747A1 EP 2545747 A1 EP2545747 A1 EP 2545747A1 EP 11707833 A EP11707833 A EP 11707833A EP 11707833 A EP11707833 A EP 11707833A EP 2545747 A1 EP2545747 A1 EP 2545747A1
Authority
EP
European Patent Office
Prior art keywords
electrode support
support arm
electrode
arm system
flow
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
EP11707833A
Other languages
German (de)
French (fr)
Other versions
EP2545747B1 (en
Inventor
Rolf Best
Peter Starke
Andreas Schüring
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.)
SMS Group GmbH
Original Assignee
SMS Siemag AG
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Publication date
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Application filed by SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP2545747A1 publication Critical patent/EP2545747A1/en
Application granted granted Critical
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/12—Arrangements for cooling, sealing or protecting electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • H05B7/101—Mountings, supports or terminals at head of electrode, i.e. at the end remote from the arc

Definitions

  • the invention relates to a Elektrodentragarmsystenn, preferably for electric arc furnaces and ladle furnaces, for attaching graphite electrodes.
  • the vertical movements are realized with a hydraulic or electromechanical lifting system on which the electrode support arm is mounted. Reversible clamps allow the graphite electrodes to be loosened and adjusted according to the burnup.
  • the invention has therefore set itself the goal of improving the Elektrodentragarmsystem.
  • the water flow is channeled and influenced in such a way that optimal flow velocities of the cooling medium are present at each point of the electrode support arm in order to ensure optimum heat dissipation.
  • the internals prevent any deposits from the cooling medium, since the flow rate in the electrode support arm can be kept relatively constant.
  • the invention relates to an electrode support system in which the electrode support arm is made of aluminum, steel with externally applied copper, or another material which is a good conductor of current, through an integrated potential-free electrode clamping device which makes it possible to implement these without insulating parts in the electrode support arm.
  • the clamping device is installed so modular within the Elektrodentragarms that bear the contact surfaces of the plate springs in the tensioned state, but not firmly connected to the lifting cylinder. This device allows installation without sensitive insulation materials. In case of repair, the components can be removed and installed without much effort because of the compact modular design, without having to dismantle the electrode support arm.
  • the design of the clamping device further allows to detect and monitor the state of the electrode contact pressure with a sensor.
  • the holding force generated by cup spring packs is thus detected and when falling below the previously defined minimum holding force is warned, so that in time a necessary replacement of the plate spring packages can be performed. This ensures that correctly working disc springs are not removed too early or too late in the event of a weakening holding force, which can otherwise result in unintentional arcing between the clamping device and the graphite electrode.
  • Electrode breakage monitoring can prevent damage to the electrode support arm and prevent production interruptions.
  • the screw connection remains unaffected by the magnetic field of the electric arc furnace, so that a resulting foreign heating is eliminated.
  • the screwed connections are therefore not subject to strength-reducing operating conditions. Likewise, the insulation is not exposed to uncontrolled thermal stress.
  • connection electrode support arm / guide column shows the connection electrode support arm / guide column.
  • each electrode support arm 1 is assigned a guide column 3, with the head region of which the respective electrode support arm is detachably connected.
  • An example of the connection is shown in FIG. 3, wherein here an insulating plate 6 arranged between the guide column head and the electrode support arm is shown.
  • the actual, releasable connection is made by screws 7 made of antimagnetic material.
  • the front region of the electrode support arm 1 -the electrode support arm head 13 -with the electrode holder 2 is reproduced in detail in FIG.
  • the holder 2 comprises the electrode (which is not shown here) over a large part of its circumference and presses it against the contact jaw fifth
  • the holder 2 comprising the electrode is operatively connected via the arms 11 to a disc spring pact 8 arranged in the interior of the front electrode carrier arm 13, this disc spring packet 8 bearing the holder - and thus the electrode - against the contact pad 5 draws.
  • the operative connection between the holder 2 or its arms 11 takes place via the pin 12 penetrating the plate spring package.
  • the bolt 12 On the back side, ie on the end facing away from the holder 2, the bolt 12 is in operative connection with a lifting cylinder 9, with the bolt against the pressure of the disc spring 8 of the bolt 12 in the direction of the holder is movable, so that the holder 2 opens slightly and thus An exchange of the electrode or a repositioning can be done according to the burnup.
  • the electrode support arms 1 and their front electrode support arm 13, to which the holder 2 is respectively connected, are water cooled, wherein it is essential that the flow guide for the cooling water inside the Electrodentragarmes and the Elektrodentragarmkopfes so that the flow rate at each point of the electrode support arm is optimal, so that optimal heat dissipation can be achieved.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Heating (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

The invention relates to an electrode support arm system for metallurgical furnaces, having an electrode support arm (1) having an electrode support arm head (13) implemented as an electrode support device at the front part thereof, designed as a hollow profile having a wall formed at least partially of conductive material having high conductivity, through which a coolant can be guided. According to the invention, flow guide plates and/or displacers are disposed within the electrode support arm (1) implemented as a hollow profile and within the electrode support device implemented on the electrode support arm head (13), by which the coolant flow can be channelized and affected with respect to flow speed, such that optimal flow speeds of the coolant are present at all locations within the electrode support arm (1) and the electrode support arm head (13), wherein highly thermally loaded regions, such as the contact surfaces on the electrode support arm head (13), can be more intensively cooled than other, less intensely thermally loaded regions of the electrode support arm (1).

Description

Elektrodentragarmsystenn  Elektrodentragarmsystenn
Die Erfindung betrifft einen Elektrodentragarmsystenn, vorzugsweise für Elektrolichtbogenöfen und Pfannenöfen, zum Anbringen von Graphitelektroden. The invention relates to a Elektrodentragarmsystenn, preferably for electric arc furnaces and ladle furnaces, for attaching graphite electrodes.
Über die Elektrodentragarme wird die für den Schmelzvorgang erforderliche elektrische Energie übertragen. Die Vertikalbewegungen werden mit einem hydraulischen oder elektromechanischen Hubsystem, auf dem der Elektrodentragarm befestigt ist, realisiert. Reversierbare Klemmvorrichtungen ermögl ichen ein Lösen der Graphitelektroden, die so entsprechend dem Abbrand nachgestellt werden. About the electrode support arms required for the melting electrical energy is transmitted. The vertical movements are realized with a hydraulic or electromechanical lifting system on which the electrode support arm is mounted. Reversible clamps allow the graphite electrodes to be loosened and adjusted according to the burnup.
Bekannte Elektrodentragarme werden zur Abfuhr der Wärme komplett mit Wasser durchströmt, wobei hier das Kühlpotential des Kühlmediums nicht ausreichend ausgenutzt wird. Known electrode support arms are flowed through to remove the heat completely with water, in which case the cooling potential of the cooling medium is not sufficiently utilized.
Aus der EP 0 594 272 ist ein Elektrodentragarm bekannt, der über Kühlkanäle, die sich in Hohlprofilen befinden, gekühlt wird . Bedingt durch den hohen Fertigungsaufwand sowie ggf. aufwendige Reparaturarbeiten, hat sich dieses System in der Praxis nicht durchsetzen können. From EP 0 594 272 an electrode support arm is known, which is cooled by cooling channels, which are located in hollow profiles. Due to the high production costs and possibly expensive repair work, this system has not prevailed in practice.
Die bisher eingesetzten Klemmvorrichtungen sind, wegen ihrer relativ großen Bauart, schwierig zu handhaben. Bei Wartungs- und Reparaturarbeiten wird oftmals wegen der schweren Zugänglichkeit sowie Verbackungen an den Kontaktflächen der komplette Ausbau in der Werkstatt notwendig. Dafür ist es erforderlich, den ganzen Elektrodentragarm zu demontieren. The clamping devices used so far are, because of their relatively large size, difficult to handle. For maintenance and repair work, the complete removal in the workshop is often necessary because of the difficult accessibility and caking on the contact surfaces. For this it is necessary to disassemble the whole electrode support arm.
Konstruktiv werden bei herkömmlichen Klemmvorrichtungen Tellerfedern mit kleinem Durchmesser und geringem Federweg eingesetzt, die, durch das ungünstige Kraft Federwegverhältnis, keine sichere Klemmung gewährleisten. Oftmals besteht das Problem, dass es innerhalb der Klemmvorrichtung zu Überschlägen kommt, dem so genannten Arcing. Bei aktuellen Lösungen werden daher entsprechende Isolierwerkstoffe eingesetzt. Erschwerend sind die Umgebungsbedingungen für Isoliermaterialen, da sie anfällig gegen Hitze, Staub und Wasser aus der Elektrodenberieselung sind. Conventionally, disc springs with a small diameter and a small spring travel are used in conventional clamping devices which, due to the unfavorable force of the spring travel ratio, do not ensure secure clamping. Often there is the problem that it comes to rollovers within the clamping device, the so-called Arcing. In current solutions, therefore, appropriate insulating materials are used. The environmental conditions for insulating materials are aggravating since they are susceptible to heat, dust and water from the electrode sprinkling.
Die Verbindung des Elektrodentragarms mit der Hubsäule wird mit magnetisierbaren Schraubenwerkstoffen wie z. B. der Güte 8.8 oder 10.9 ausgeführt. Bei modernen leistungsstarken Schmelzaggregaten kann sich der Schraubenwerkstoff aufgrund der starken Magnetfelder unzulässig hoch erhitzen, so dass sich dadurch die Festigkeitseigenschaften verringern. Ebenso können die umgebenden Isolationswerkstoffe durch die Wärme beschädigt werden, was dann zu Arcing führen kann. The connection of the Elektrodentragarms with the lifting column with magnetizable screw materials such. B. grade 8.8 or 10.9 executed. In modern high-performance melting units, the screw material can heat up unacceptably high due to the strong magnetic fields, thereby reducing the strength properties. Likewise, the surrounding insulation materials can be damaged by the heat, which can then lead to arcing.
Die Erfindung hat sich daher als Ziel gesetzt, das Elektrodentragarmsystem zu verbessern. The invention has therefore set itself the goal of improving the Elektrodentragarmsystem.
Gelöst wird diese Aufgabe erfindungsgemäß mit einem Elektrodentragarmsystem für metallurgische Öfen, mit einem Elektrodentragarm mit einem als Elektrodentragvornchtung ausgebildeten Elektrodentragarmkopf an seinem vorderen Teil, der mit einer zumindest teilweise aus stromführenden Material hoher Leitfähigkeit gebildeten Wandung als Hohlprofil ausgestaltet ist, durch das ein Kühlmittel leitbar ist, This object is achieved according to the invention with a Elektrodentragarmsystem for metallurgical furnaces, with an electrode support arm designed as Elektrodentragvornchtung Elektrodentragarmkopf at its front part, which is configured with a wall formed at least partially of current-carrying material high conductivity as a hollow profile through which a coolant is conductive,
der dadurch gekennzeichnet ist, - dass innerhalb des als Hohlprofil ausgebildeten Elektrodentragarm und der am Elektrodentragarmkopf ausgebildeten Elektrodentragvornchtung Strömungsleitbleche und/oder Verdrängungskörper angeordnet sind, - durch die der Kühlmittelstrom derart hinsichtlich der Strömungsgeschwindigkeit kanalisierbar und beeinflussbar ist, dass an jeder Stelle innerhalb des Elektrodentragarms und des Elektrodentragarmkopfes optimale Strömungsgeschwindigkeiten descharacterized in that - within the designed as a hollow profile electrode support arm and the Elektrodentragarmkopf formed Elektrodentragvornchtung Strömungsleitbleche and / or displacement body are arranged - through which the coolant flow can be channeled and influenced in terms of the flow velocity that at any point within the Elektrodentragarms and the Elektrodentragarmkopfes optimal flow velocities of the
Kühlmediums vorhanden sind, Coolant are present,
wobei hoch wärmebelastete Bereiche, wie die Kontaktflächen am  where highly heat-stressed areas, such as the contact surfaces on
Elektrodentragarmkopf intensiver kühlbar sind als andere, weniger hoch wärmebelastete Bereiche des Elektrodentragarmes.  Elektrodentragarmkopf are more intense coolable than other, less highly heat-stressed areas of Elektrodentragarmes.
Durch den Einbau von Strömungsleitblechen bzw. Verdrängungskörpern wird der Wasserstrom derart kanalisiert und beeinflusst, dass an jeder Stelle des Elektrodentragarms optimale Strömungsgeschwindigkeiten des Kühlmediums vorliegen, um so eine optimale Wärmeableitung zu gewährleisten. Ebenso beugen die Einbauten eventuellen Ablagerungen aus dem Kühlmedium vor, da die Durchströmgeschwindigkeit im Elektrodentragarm relativ konstant gehalten werden kann. Through the installation of flow baffles or displacement bodies, the water flow is channeled and influenced in such a way that optimal flow velocities of the cooling medium are present at each point of the electrode support arm in order to ensure optimum heat dissipation. Likewise, the internals prevent any deposits from the cooling medium, since the flow rate in the electrode support arm can be kept relatively constant.
We iterh i n ze ich n et s i ch d as El e ktrod en trag a rm system , wobe i d er Elektrodentragarm aus Aluminium, Stahl mit außen aufgebrachten Kupfer oder aus einem anderen, den Strom gut leitenden Material bestehen kann, durch eine integrierte potentialfreie Elektrodenklemmvorrichtung aus, die es möglich macht, diese ohne Isolierteile in den Elektrodentragarm zu implementieren. Die Klemmvorrichtung ist innerhalb des Elektrodentragarms so modular eingebaut, dass die Kontaktflächen der Tellerfedern im gespannten Zustand anliegen, jedoch nicht fest mit dem Hubzylinder verbunden sind. Diese Vorrichtung ermöglicht einen Einbau ohne empfindliche Isolationswerkstoffe. Im Falle einer Reparatur lassen sich die Bauteile ohne große Aufwendungen wegen der kompakten modularen Ausführung aus- und einbauen, ohne den Elektrodentragarm demontieren zu müssen. More particularly, the invention relates to an electrode support system in which the electrode support arm is made of aluminum, steel with externally applied copper, or another material which is a good conductor of current, through an integrated potential-free electrode clamping device which makes it possible to implement these without insulating parts in the electrode support arm. The clamping device is installed so modular within the Elektrodentragarms that bear the contact surfaces of the plate springs in the tensioned state, but not firmly connected to the lifting cylinder. This device allows installation without sensitive insulation materials. In case of repair, the components can be removed and installed without much effort because of the compact modular design, without having to dismantle the electrode support arm.
Die Ausführung der Klemmvorrichtung erlaubt weiterhin, den Zustand des Elektrodenanpressdrucks mit einem Sensor zu erfassen und zu überwachen. Die über Tellerfederpakete erzeugte Haltekraft wird somit erfasst und bei Unterschreitung der vorher definierten Mindesthaltekraft wird gewarnt, so dass rechtzeitig ein notwendiger Austausch der Tellerfederpakete durchgeführt werden kann. Somit wird sichergestellt, dass korrekt arbeitende Tellerfedern nicht zu früh bzw. bei nachlassender Haltekraft zu spät ausgebaut werden, was sonst ein ungewolltes Arcing zwischen der Klemmvorrichtung und der Graphitelektrode nach sich ziehen kann. The design of the clamping device further allows to detect and monitor the state of the electrode contact pressure with a sensor. The holding force generated by cup spring packs is thus detected and when falling below the previously defined minimum holding force is warned, so that in time a necessary replacement of the plate spring packages can be performed. This ensures that correctly working disc springs are not removed too early or too late in the event of a weakening holding force, which can otherwise result in unintentional arcing between the clamping device and the graphite electrode.
Durch die Integration der nach Patent EP 1 825716 B1 bekannten Sicherungseinrichtung des Sprühkühlsystems einschließlich der darin beschriebenen By the integration of the known according to patent EP 1 825 716 B1 safety device of the spray cooling system including the described therein
Elektrodenbruchüberwachung können Schäden am Elektrodentragarm verhindert und Produktionsunterbrechungen vermieden werden.  Electrode breakage monitoring can prevent damage to the electrode support arm and prevent production interruptions.
Durch Verwendung von hochlegierten, nichtmagnetisierbaren Materialien bleibt die Schraubverbindung vom Magnetfeld des Elektrolichtbogenofens unberührt, so dass eine daher kommende Fremderwärmung entfällt. Die Schraubverbindungen unterliegen somit keine festigkeitsmindernden Betriebszustände. Ebenso wird die Isolation nicht einer unkontrollierten thermischen Belastung ausgesetzt. By using high-alloy, non-magnetisable materials, the screw connection remains unaffected by the magnetic field of the electric arc furnace, so that a resulting foreign heating is eliminated. The screwed connections are therefore not subject to strength-reducing operating conditions. Likewise, the insulation is not exposed to uncontrolled thermal stress.
Die Erfindung soll nachfolgend unter Bezug auf die Zeichnungen näher erläutert werden. The invention will be explained in more detail with reference to the drawings.
Dabei zeigt: Showing:
Fig.1 eine schematische Darstellung des Elektrodentragarmsystems, 1 shows a schematic representation of the electrode support arm system,
Fig.2 einen Schnitt durch die Halter-Anordnung und 2 shows a section through the holder assembly and
Fig.3 die Verbindung Elektrodentragarm/Führungssäule.  3 shows the connection electrode support arm / guide column.
Im vorliegenden Fall sind drei Elektrodentragarme 1 vorgesehen, die im Wesentlichen aus geschweißten Hohlprofilen bestehen. Jedem Elektrodentragarm ist eine Führungssäule 3 zugeordnet, mit deren Kopfbereich der jeweilige Elektrodentragarm lösbar verbunden ist. Ein Beispiel für die Verbindung ist in der Figur 3 dargestellt, wobei hier eine zwischen dem Führungssäulenkopf und dem Elektrodentragarm angeordnete Isolierplatte 6 dargestellt ist. Die eigentliche, lösbare, Verbindung wird durch Schrauben 7 aus antimagnetischem Werkstoff hergestellt. In the present case, three electrode support arms 1 are provided, which consist essentially of welded hollow sections. Each electrode support arm is assigned a guide column 3, with the head region of which the respective electrode support arm is detachably connected. An example of the connection is shown in FIG. 3, wherein here an insulating plate 6 arranged between the guide column head and the electrode support arm is shown. The actual, releasable connection is made by screws 7 made of antimagnetic material.
Der vordere Bereich des Elektrodentragarmes 1 - also der Elektrodentragarmkopf 13 - mit dem Elektrodenhalter 2 ist im Detail in der Figur 2 wiedergegeben. The front region of the electrode support arm 1 -the electrode support arm head 13 -with the electrode holder 2 is reproduced in detail in FIG.
Der Halter 2 umfasst die Elektrode ( die hier nicht dargestellt ist) über einen Großteile ihres Umfanges und drückt diese gegen die Kontaktbacke 5. The holder 2 comprises the electrode (which is not shown here) over a large part of its circumference and presses it against the contact jaw fifth
Wie aus dem Schnitt der Figur 2 ersichtlich, steht der die Elektrode umfassende Halter 2 über die Arme 11 mit einem im Inneren des vorderen Elektrodentragarmkopfes 13 angeordneten Tellerfederpakt 8 in Wirkverbindung, wobei dieses Tellerfederpaket 8 den Halter - und damit die Elektrode - gegen die Kontaktbacke 5 zieht. Die Wirkverbindung zwischen dem Halter 2 bzw. dessen Armen 11 erfolgt über den das Tellerfederpaket durchdringenden Bolzen 12. As can be seen from the section of FIG. 2, the holder 2 comprising the electrode is operatively connected via the arms 11 to a disc spring pact 8 arranged in the interior of the front electrode carrier arm 13, this disc spring packet 8 bearing the holder - and thus the electrode - against the contact pad 5 draws. The operative connection between the holder 2 or its arms 11 takes place via the pin 12 penetrating the plate spring package.
Rückseitig, also am vom Halter 2 abgewandten Ende, steht der Bolzen 12 mit einem Hubzylinder 9 in Wirkverbindung , mit dem gegen den Druck des Tellerfederpaketes 8 der Bolzen 12 in Richtung auf den Halter bewegbar ist, so dass sich der Halter 2 etwas öffnet und damit ein Austausch der Elektrode oder ein Nachsetzen entsprechend dem Abbrand erfolgen kann. On the back side, ie on the end facing away from the holder 2, the bolt 12 is in operative connection with a lifting cylinder 9, with the bolt against the pressure of the disc spring 8 of the bolt 12 in the direction of the holder is movable, so that the holder 2 opens slightly and thus An exchange of the electrode or a repositioning can be done according to the burnup.
Die Elektrodentragarme 1 und deren vorderer Elektrodentragarmkopf 13, an die der Halter 2 jeweils angeschlossen ist, sind wassergekühlt, wobei es wesentlich ist, dass die Strömungsführung für das Kühlwasser im Inneren des Elektrodentragarmes und des Elektrodentragarmkopfes so erfolgt, dass die Strömungsgeschwindigkeit an jeder Stelle des Elektrodentragarmes optimal ist, also damit eine optimale Wärmeabgabe erreichbar ist. The electrode support arms 1 and their front electrode support arm 13, to which the holder 2 is respectively connected, are water cooled, wherein it is essential that the flow guide for the cooling water inside the Electrodentragarmes and the Elektrodentragarmkopfes so that the flow rate at each point of the electrode support arm is optimal, so that optimal heat dissipation can be achieved.
Dies geschieht durch im Inneren des Elektrodentragarmes angeordnete Einbauten, wie Strömungsbleche, Kanäle, Verdrängungskörper. In der Figur 2 sind andeutungsweise h ier n ur d ie Kanäle 10 dargestellt, die den der Kontaktbacke 5 des vorderen Elektrodentragarmkopfes zugewandten Bereich kühlen. This is done by internals arranged in the interior of the electrode support arm, such as flow plates, channels, displacement bodies. In FIG. 2, the channels 10, which cool the area facing the contact jaw 5 of the front electrode support arm head, are indicated.

Claims

Patentansprüche claims
1 . Elektrodentragarmsystem für metallurgische Öfen, mit einem 1 . Electrode support arm system for metallurgical furnaces, with one
Elektrodentragarm (1 ) mit einem als Elektrodentragvorrichtung  Electrode support arm (1) with a as electrode support device
ausgebildeten Elektrodentragarm köpf (13) an seinem vorderen Teil, der mit einer zumindest teilweise aus stromführenden Material hoher  trained Elektrodentragarm köpf (13) at its front part, which is at least partially made of current-carrying material high
Leitfähigkeit gebildeten Wandung als Hohlprofil ausgestaltet ist, durch das ein Kühlmittel leitbar ist,  Conductivity formed wall is designed as a hollow profile through which a coolant is conductive,
dadurch gekennzeichnet,  characterized,
dass innerhalb des als Hohlprofil ausgebildeten Elektrodentragarm (1 ) und der am Elektrodentragarmkopf (13) ausgebildeten Elektrodentragvorrichtung Strömungsleitbleche und/oder  in that flow guide plates and / or within the electrode support arm (1) designed as a hollow profile and the electrode support device formed on the electrode support arm head (13)
Verdrängungskörper angeordnet sind,  Displacement body are arranged,
durch die der Kühlmittelstrom derart hinsichtlich der  by the coolant flow so in terms of
Strömungsgeschwindigkeit kanalisierbar und beeinflussbar ist, dass an jeder Stelle innerhalb des Elektrodentragarms (1 ) und des Elektrodentragarmkopfes (13) optimale Strömungsgeschwindigkeiten des Kühlmediums vorhanden sind,  Can be channeled and influenced flow rate that at each point within the Elektrodentragarms (1) and the Elektrodentragarmkopfes (13) optimal flow rates of the cooling medium are present,
wobei hoch wärmebelastete Bereiche, wie die Kontaktflächen am Elektrodentragarmkopf (13) intensiver kühlbar sind als andere, weniger hoch wärmebelastete Bereiche des Elektrodentragarmes (1 ).  wherein high heat-stressed areas, such as the contact surfaces on the Elektrodentragarmkopf (13) are more cool than other, less high heat-loaded areas of the electrode support arm (1).
2. Elektrodentragarmsystem nach Anspruch 1 , 2. Elektrodentragarmsystem according to claim 1,
dadurch gekennzeichnet,  characterized,
dass der Elektrodentragarm (1 ) aus Aluminium, Stahl mit außen  that the electrode support arm (1) made of aluminum, steel with outside
aufgebrachten leitfähigem Material wie z.B. Kupfer oder aus einem anderen, den Strom gut leitenden Material besteht.  applied conductive material such as e.g. Copper or from another, the current is good conductive material.
3. Elektrodentragarmsystem nach einem der vorstehenden Ansprüche, 3. Elektrodentragarmsystem according to any one of the preceding claims,
dadurch gekennzeichnet, dass der am vorderen Ende des Elektrodentragarmes (1 ) angeordnete Elektrodentragarmkopf (13) als integrierte potentialfreie characterized, in that the electrode support arm head (13) arranged at the front end of the electrode support arm (1) is designed as an integrated potential-free
Elektrodenklemmvorrichtung ausgebildet ist., Electrode clamping device is formed.,
Elektrodentragarmsystem nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, Electrode support arm system according to one of the preceding claims, characterized
dass die Elektrodenklemmvorrichtung einen die Elektrode umfassenden Halter (2) und mindestens eine Kontaktbacke (5) aufweist, sowie ein die Elektrode gegen die Kontaktbacke drückendes Tellerfederpaket (8), und dass ein mit dem Tellerfederpaket (8) zusammenwirkender in that the electrode clamping device has a holder (2) comprising the electrode and at least one contact jaw (5), as well as a disk spring packet (8) pressing the electrode against the contact jaw, and that one cooperating with the disk spring packet (8)
Hubzylinder (9) vorgesehen ist, mit dem - zum Wechsel oder Nachsetzen der Elektrode - der Druck des Tellerfederpaketes (8) aufhebbar ist. Lifting cylinder (9) is provided, with the - for changing or repositioning of the electrode - the pressure of the disc spring assembly (8) can be canceled.
Elektrodentragarmsystem nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, Electrode support arm system according to one of the preceding claims, characterized
dass das Tellerfederpaket (8) mit dem Hubzylinder (9) in Wirkverbindung steht , jedoch nicht fest mit dem Hubzylinder (9) verbunden ist. that the plate spring assembly (8) with the lifting cylinder (9) is in operative connection, but not firmly connected to the lifting cylinder (9).
Elektrodentragarmsystem nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, Electrode support arm system according to one of the preceding claims, characterized
dass der Zustand des Elektrodenanpressdrucks mit einem Sensor erfassbar und überwachbar ist und dass beim Unterschreiten der über das Tellerfederpaket (8) erzeugten, vorgegebenen Mindesthaltekraft ein Signal auf einen notwendigen Austausch des Tellerfederpaketes hinweist. that the state of the electrode contact pressure can be detected and monitored by a sensor and that when falling below the predetermined minimum holding force generated by the plate spring package (8), a signal indicates a necessary replacement of the cup spring package.
Elektrodentragarmsystem nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, Electrode support arm system according to one of the preceding claims, characterized
dass der Elektrodentragarm (1 ) lösbar an einer Führungssäule (3) befestigt ist, wobei die Verbindungselemente aus einem hochlegierten, nichtmagnetisierbaren Werkstoff bestehen. in that the electrode support arm (1) is detachably fastened to a guide column (3), wherein the connecting elements consist of a high-alloy, non-magnetizable material.
EP11707833.7A 2010-03-10 2011-03-07 Electrode support arm system Revoked EP2545747B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010010994 2010-03-10
DE102010052086A DE102010052086A1 (en) 2010-03-10 2010-11-17 Elektrodentragarmsystem
PCT/EP2011/053384 WO2011110522A1 (en) 2010-03-10 2011-03-07 Electrode support arm system

Publications (2)

Publication Number Publication Date
EP2545747A1 true EP2545747A1 (en) 2013-01-16
EP2545747B1 EP2545747B1 (en) 2014-05-14

Family

ID=44508065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11707833.7A Revoked EP2545747B1 (en) 2010-03-10 2011-03-07 Electrode support arm system

Country Status (10)

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US (1) US20130039379A1 (en)
EP (1) EP2545747B1 (en)
JP (1) JP2013521625A (en)
KR (1) KR20120123725A (en)
CN (1) CN102870496B (en)
BR (1) BR112012022762A2 (en)
CA (1) CA2792909C (en)
DE (1) DE102010052086A1 (en)
MA (1) MA34210B1 (en)
WO (1) WO2011110522A1 (en)

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DE102014001713B3 (en) * 2014-02-11 2015-03-26 Badische Stahl-Engineering Gmbh Elektrodentragarmkörper with support body
DE102014208516A1 (en) 2014-05-07 2015-11-12 Sms Group Gmbh Apparatus for supporting an electrode arm of a high current supply to a metallurgical furnace
DE102018220594A1 (en) * 2018-11-29 2020-06-04 Sms Group Gmbh Device and method for holding an electrode support arm
RU2705832C1 (en) * 2019-04-11 2019-11-12 Федеральное государственное бюджетное образовательное учреждение высшего образования "Чувашский государственный университет имени И.Н. Ульянова" Electric holder of arc electric furnace
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Also Published As

Publication number Publication date
KR20120123725A (en) 2012-11-09
WO2011110522A1 (en) 2011-09-15
EP2545747B1 (en) 2014-05-14
US20130039379A1 (en) 2013-02-14
CA2792909C (en) 2016-05-10
CA2792909A1 (en) 2011-09-15
JP2013521625A (en) 2013-06-10
CN102870496A (en) 2013-01-09
BR112012022762A2 (en) 2016-07-19
CN102870496B (en) 2015-11-25
MA34210B1 (en) 2013-05-02
DE102010052086A1 (en) 2011-09-15

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