DE889487C - Three-phase electrode system for electric ovens - Google Patents

Three-phase electrode system for electric ovens

Info

Publication number
DE889487C
DE889487C DEN895D DEN0000895D DE889487C DE 889487 C DE889487 C DE 889487C DE N895 D DEN895 D DE N895D DE N0000895 D DEN0000895 D DE N0000895D DE 889487 C DE889487 C DE 889487C
Authority
DE
Germany
Prior art keywords
electrodes
electrode
phase
electrode system
sets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEN895D
Other languages
German (de)
Inventor
Olaf Dipl-Ing Jensen
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.)
Norsk Hydro Elektrisk Kvaelstof AS
Original Assignee
Norsk Hydro Elektrisk Kvaelstof AS
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 Norsk Hydro Elektrisk Kvaelstof AS filed Critical Norsk Hydro Elektrisk Kvaelstof AS
Application granted granted Critical
Publication of DE889487C publication Critical patent/DE889487C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/0019Circuit arrangements
    • H05B3/0023Circuit arrangements for heating by passing the current directly across the material to be heated

Landscapes

  • Discharge Heating (AREA)

Description

Die Erfindung betrifft ein dreiphasiges Elektrodensystem für solche elektrische Ofen, bei denen die Beschickung den Heizwiderstand bildet und zwei Sätze von Dreiphasenelektroden in je einer horizontalen Ebene angeordnet sind-und paarweise das gleiche Potential besitzen.The invention relates to a three-phase electrode system for such electric ovens in which the load forms the heating resistor and two sets of three-phase electrodes are each arranged in a horizontal plane - and in pairs have the same potential.

Ein allgemein verwendetes Elektrodensystem dieser Art ist in' den Fig. i und 2 der Zeichnung veranschaulicht, von denen Fig. i einen schematischen ausgefalteten zylindrischen Schnitt und Fig. 2 einen Querschnitt darstellt.A commonly used electrode system of this type is in 'den Figs. I and 2 of the drawing illustrate, of which Fig. I is a schematic Unfolded cylindrical section and Fig. 2 shows a cross section.

Wie ersichtlich sind die Elektroden a, b, c des oberen Elektrodensatzes senkrecht oberhalb der Elektroden d, e, f des unteren angebracht.As can be seen, the electrodes a, b, c of the upper set of electrodes are attached vertically above the electrodes d, e, f of the lower one.

Dadurch erhält man, wie in der Zeichnung veranschaulicht, hauptsächlich waagerechte Strombahnen, die den Querschnitt des Schachtes nur unvollständig decken.Thereby, as illustrated in the drawing, one mainly obtains horizontal current paths that only incompletely cover the cross-section of the shaft.

Gemäß der vorliegenden Erfindung wird eine bessere Ausnutzung= der Elektroden dadurch erzielt, daß die beiden Sätze von Dreiphasenelektroden einen solchen senkrechten Abstand haben und um einen solchen Winkel zueinander versetzt sind, daß der gegenseitige Abstand der einzelnen Elektroden jedes Satzes ungefähr gleich dem Abstand jeder Elektrode des einen Satzes von der nächstliegenden ungleichnamigen Elektrode des anderen Satzes ist.According to the present invention, better utilization = the Electrodes achieved by having the two sets of three-phase electrodes have such a perpendicular distance and offset from one another by such an angle are that the mutual spacing of the individual electrodes of each set is approximately equal to the distance of each electrode of one set from the nearest unlike one Electrode of the other set is.

Ein solches System ist in den Fig. 3 und q. der (Zeichnung veranschaulicht, in denen es gezeigt ist, daß man außer den waagerechten Strombahnen auch diagonale Strombahnen erhält, nämlich zwischen den Elektroden a, b, c des oberen Elektrodensatzes und d, e, f des unteren Elektrodensatzes.Such a system is shown in Figs. 3 and q. the (drawing illustrates, in which it is shown that in addition to the horizontal current paths, diagonal current paths are also obtained, namely between electrodes a, b, c of the upper set of electrodes and d, e, f of the lower set of electrodes.

In der Ausführungsform nach Fig. 3 und q. sind die Elektroden des oberen Satzes, wie ersichtlich, an die gleiche Phase wie die eine oder die andere von den nächstliegenden Elektroden -des unteren Satzes angeschlossen. Eine noch bessere Ausnutzung der Elektroden und Deckung des ganzen Feldes, das die Strombahnen durchtreten sollen, erhält man dadurch, daß gemäß Fig. S und 6 jede Elektrode des einen Satzes an die gleiche Phase wie die diametral gegenüberliegende Elektrode des anderen Satzes angeschlossen wird.In the embodiment of Fig. 3 and q. are the electrodes of the The upper sentence, as can be seen, in the same phase as one or the other from the closest electrodes -of the lower set. One more Better utilization of the electrodes and coverage of the entire field that the current paths are to pass through, is obtained in that, according to FIGS. S and 6, each electrode of the a set to the same phase as the diametrically opposite electrode of the other set is connected.

Wie aus den Figuren hervorgeht, erzielt man in dieser Weise, daß von jeder einzelnen Elektrode vier Strombahnen ausgehen.As can be seen from the figures, one achieves in this way that of four current paths emanate from each individual electrode.

Bei der Anwendung dieses Systems wird man, wenn die Elektrodenspitze in einer Flucht mit der Innenfläche des zylindrischen Ofens gedacht wird, den Abstand zwischen den Ebenen der beiden Elektrodensätze gleich dem Schachtdurchmesser dividiert durch 1/2 festlegen müssen.When using this system you will when the electrode tip in alignment with the inner surface of the cylindrical furnace is thought to be the distance divided equal to the shaft diameter between the levels of the two sets of electrodes must specify by 1/2.

Claims (2)

PATENTANSPRÜCHE: i. Dreiphasiges Elektrodensystem für elektrische Ofen, bei denen die Beschickung den Heizwiderstand bildet und zwei Sätze von Dreiphasenelektroden in je einer waagerechten Ebene angeordnet und paarweise das gleiche Potential besitzen, dadurchgekennzeichnet, daß die beiden Sätze von Dreiphasenelektroden einen solchen senkrechten Abstand voneinander besitzen und um einen solchen Winkel zueinander versetzt sind, daß der gegenseitige Abstand der einzelnen Elektroden jedes Satzes ungefähr gleich dem Abstand jeder Elektrode des einen. Satzes von der nächstliegenden ungleichnamigen Elektrode des anderen ist. PATENT CLAIMS: i. Three-phase electrode system for electrical Furnaces with the load forming the heating resistor and two sets of three-phase electrodes arranged in a horizontal plane and in pairs have the same potential, characterized in that the two sets of three-phase electrodes are one such have perpendicular distance from each other and at such an angle to each other are offset that the mutual spacing of the individual electrodes of each set roughly equal to the spacing of each electrode of the one. Theorem of the closest unlike electrode of the other. 2. Dreiphasiges Elektrodensystem nach Anspruch i, dadurch gekennzeichnet, daß der gegenseitige Versetzungswinkel der beiden Elektrodensätze i8o° ist.2. Three-phase electrode system according to Claim i, characterized in that the mutual offset angle of the two Electrode sets i8o ° is.
DEN895D 1943-03-15 1944-11-11 Three-phase electrode system for electric ovens Expired DE889487C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO889487X 1943-03-15

Publications (1)

Publication Number Publication Date
DE889487C true DE889487C (en) 1953-09-10

Family

ID=19907569

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN895D Expired DE889487C (en) 1943-03-15 1944-11-11 Three-phase electrode system for electric ovens

Country Status (1)

Country Link
DE (1) DE889487C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970883C (en) * 1954-05-01 1958-11-06 Dr Techn Josef Ratzke Switching arrangement for resistance heating, glowing and butt welding of two workpieces with multi-phase alternating current under equal loading of all mains phases
DE1119429B (en) * 1958-02-08 1961-12-14 Demag Elektrometallurgie Gmbh Electrode circuit for large electric ovens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970883C (en) * 1954-05-01 1958-11-06 Dr Techn Josef Ratzke Switching arrangement for resistance heating, glowing and butt welding of two workpieces with multi-phase alternating current under equal loading of all mains phases
DE1119429B (en) * 1958-02-08 1961-12-14 Demag Elektrometallurgie Gmbh Electrode circuit for large electric ovens

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