AT99666B - Protection device for the cooling cylinders of the electrodes of electric arc furnaces. - Google Patents

Protection device for the cooling cylinders of the electrodes of electric arc furnaces.

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Publication number
AT99666B
AT99666B AT99666DA AT99666B AT 99666 B AT99666 B AT 99666B AT 99666D A AT99666D A AT 99666DA AT 99666 B AT99666 B AT 99666B
Authority
AT
Austria
Prior art keywords
cooling
protection device
furnace
electrodes
electrode
Prior art date
Application number
Other languages
German (de)
Original Assignee
Stahl Und Walzwerk Hennigsdorf
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stahl Und Walzwerk Hennigsdorf filed Critical Stahl Und Walzwerk Hennigsdorf
Application granted granted Critical
Publication of AT99666B publication Critical patent/AT99666B/en

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Description

  

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  Schutzvorrichtung für die Kühlzylinder der Elektroden von   Lichtbogenöfen.   
 EMI1.1 




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  Protection device for the cooling cylinders of the electrodes of electric arc furnaces.
 EMI1.1


 

Claims (1)

PATENT-ANSPRÜCHE : 1. Schutzvorrichtung für die Kühlzylinder der Elektroden von Lichtbogenöfen, dadurch gekenn- zeichnet, dass sowohl die Elektroden von den Kühlzylindern oder Kühlringen als auch die Kühlzylinder oder Kühlringe selbst von dem Ofenkörper elektrisch isoliert und letztere unter Zwischenschaltung einer bei Bruch einer Elektrode ansprechenden Schaltvorrichtung mit dem Ofentransformator oder Stromerzeuger elektrisch leitend verbunden sind. PATENT CLAIMS: 1. Protection device for the cooling cylinder of the electrodes of arc furnaces, characterized in that both the electrodes of the cooling cylinders or cooling rings and the cooling cylinders or cooling rings themselves are electrically isolated from the furnace body and the latter with the interposition of a switching device that responds when an electrode breaks Furnace transformer or power generator are electrically connected. 2. Schutzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass in der elektrischen Leitung zwischen den Kühlzylindern oder Kühlringen (e) und dem Ofentransformator (b) ein Relais oder Höchst- stromauslöser (h) direkt oder unter Vorschaltung von Widerständen (g) angeordnet ist, welche beim Bruche einer Elektrode den Ofen abschalten und damit ein Durchschmelzen der Kühlzylinder oder Kühlringe verhindern. 2. Protection device according to claim 1, characterized in that in the electrical line between the cooling cylinders or cooling rings (e) and the furnace transformer (b) a relay or high current release (h) is arranged directly or with upstream resistors (g), which at If an electrode breaks, switch off the furnace and thus prevent the cooling cylinders or cooling rings from melting through. 3. Schutzvorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, dass das in die Schutz- leitung (f) eingeschaltete Relais oder der Höchststromauslöser mit einer Sperrvorrichtung (n) ver- sehen ist, durch welche ein Einschalten des Ofens bei zerbrochene ! Elektrode verhindert wird. 3. Protection device according to claim 1 and 2, characterized in that the relay switched on in the protective line (f) or the high-current release is provided with a locking device (s), by means of which the furnace can be switched on in the event of a broken! Electrode is prevented. , 4. Schutzvorrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass für jede Elektrode eine besondere Schutzleitung, (I) mit Relais, Sperrvorrichtungen usw. vorgesehen ist, wobei durch eine an sich bekannte Anzeigevorrichtung die Elektrode kenntlich gemacht ist, bei der ein Bruch und dadurch eine Lichtbogenbildung im Kühlzylinder oder Kühlringe aufgetreten ist. 4. Protection device according to claim 1 to 3, characterized in that a special protective line (I) with relays, locking devices, etc. is provided for each electrode, the electrode being identified by a known display device in which a break and thereby arcing has occurred in the cooling cylinder or cooling rings. 5. Schutzvorrichtung nach Anspruch 1 bis 4, dadurch gekennzeichnet, dass die Schutzleitung (f) vom Kühlzylinder oder Kühlringe (c) am Nullpunkt oder an einer der nächsten Phasen des Ofentransformators (b) angeschlossen ist. 5. Protection device according to claim 1 to 4, characterized in that the protective line (f) from the cooling cylinder or cooling rings (c) is connected to the zero point or to one of the next phases of the furnace transformer (b). 6. Schutzvorrichtung nach Anspruch 1 bis 5, dadurch gekennzeichnet, dass die Relais oder Höchst- stromauslöser bei einem Bruch der Elektroden durch eine besondere oder sekundäre Stromquelle betätigt werden und den Ofen selbsttätig abschalten, EMI2.1 6. Protection device according to claim 1 to 5, characterized in that the relays or high-current release in the event of a break in the electrodes are actuated by a special or secondary power source and switch off the furnace automatically, EMI2.1
AT99666D 1923-08-15 1924-03-28 Protection device for the cooling cylinders of the electrodes of electric arc furnaces. AT99666B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE111226X 1923-08-15

Publications (1)

Publication Number Publication Date
AT99666B true AT99666B (en) 1925-04-10

Family

ID=5652447

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99666D AT99666B (en) 1923-08-15 1924-03-28 Protection device for the cooling cylinders of the electrodes of electric arc furnaces.

Country Status (2)

Country Link
AT (1) AT99666B (en)
CH (1) CH111226A (en)

Also Published As

Publication number Publication date
CH111226A (en) 1925-08-01

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