EP0597345B1 - Conductor section for increasing the inductance of a cooled peak current cable - Google Patents

Conductor section for increasing the inductance of a cooled peak current cable Download PDF

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Publication number
EP0597345B1
EP0597345B1 EP93117645A EP93117645A EP0597345B1 EP 0597345 B1 EP0597345 B1 EP 0597345B1 EP 93117645 A EP93117645 A EP 93117645A EP 93117645 A EP93117645 A EP 93117645A EP 0597345 B1 EP0597345 B1 EP 0597345B1
Authority
EP
European Patent Office
Prior art keywords
conductor
inductance
arrangement according
sleeve
iron sleeve
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 - Lifetime
Application number
EP93117645A
Other languages
German (de)
French (fr)
Other versions
EP0597345A1 (en
Inventor
Herbert Dung
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.)
Flohe GmbH and Co
Original Assignee
Flohe GmbH and Co
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 Flohe GmbH and Co filed Critical Flohe GmbH and Co
Publication of EP0597345A1 publication Critical patent/EP0597345A1/en
Application granted granted Critical
Publication of EP0597345B1 publication Critical patent/EP0597345B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/001—Power supply cables for the electrodes of electric-welding apparatus or electric-arc furnaces
    • 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
    • H05B7/11—Arrangements for conducting current to the electrode terminals

Definitions

  • the invention relates to an arrangement which increases the inductance of a cooled high-current cable.
  • the primary object of the invention is to offer a space-saving or space-saving solution for rectifying the reactance asymmetry.
  • the iron sleeve surrounding a conductor section and insulated from the conductor increases the inductance in the high-current cable to which the conductor arrangement is assigned.
  • the cross section, wall thickness and / or length of the iron sleeve determine the additional inductance generated by the conductor arrangement according to the invention and are chosen to take account of the respective requirements.
  • the conductor arrangement which increases the inductance can be inserted into the current path in a space-saving manner, the inductance of which requires the increase.
  • the new conductor arrangement can then also be manufactured more easily and cost-effectively than, for example, a reactance loop.
  • Embodiments of the invention result from subclaims 1 to 8.
  • the conductor arrangement in FIG. 1 has a solid conductor 11 formed from a plurality of twisted copper wires 111, 112 ..., which is provided at its ends with connecting pieces 12 and 12 ', via which the connection to the high-current cable is established.
  • a partial area of the conductor 11 is surrounded by an iron sleeve 13.
  • the end regions of the sleeve 13 are overlapped by hose sections 14 and 14 'starting from the connecting pieces 12 and 12', which are fixed on the connecting pieces 12 and 12 'and on the iron sleeve 13 by means of clamps 16.
  • the iron sleeve 13 is assigned spacer sleeves 17, 17 'made of non-conductive material, which prevent contact between the conductor 11 and the iron sleeve 13.
  • these spacer sleeves 17, 17 ' have a clear width which is greater than the cross section of the conductor 11.
  • the spacer sleeves 17 and 17' are embedded in recesses 131, 131 'in the iron sleeve 13.
  • Spacer sleeves 17 ' also have a shoulder 171 with which they come to rest against the respective end face of the iron sleeve 13.
  • the cross section, wall thickness and / or length of the iron sleeve 13 are selected with a view to the additional inductance desired or required in the individual case.
  • FIGS. 4 and 5 differs from the embodiment according to FIGS. 1 to 3 only in that the conductor 21 is a waveguide which is formed from wires 211, 212... Applied on a supporting tube 22 ( in particular Figure 5). A corresponding conductor arrangement is used when it is necessary to cool the high-current cable more than necessary.

Abstract

In order to increase the inductance of a cooled high-current cable, a conductor section (11) which is integrated into the cable is assigned an iron sleeve (13) in a manner which leaves an interspace. The iron sleeve (13), which is designed so as to achieve the desired increase in inductance, is supported on the conductor section (11) by means of an insulation, preferably in the shape of distance sleeves (17, 17') of non-conducting material, which surrounds the conductor section (11) while maintaining a passage, and is fixed in terms of position with respect to the conductor section (11). <IMAGE>

Description

Die Erfindung betrifft eine die Induktivität eines gekühlten Hochstromkabels erhöhende anordnung.The invention relates to an arrangement which increases the inductance of a cooled high-current cable.

Etwa beim Betreiben von Dreiphasenlichtbogenöfen stellt sich das Problem, daß bei in einer Ebene angeordneten Tragarmen für die Elektroden der mittlere Strompfad eine geringere Induktivität aufweist als die äußeren Strompfade. Zur Behebung der sogenannten Reaktanzasymmetrie ist unter anderem vorgeschlagen worden, in den mittleren Strompfad eine die Reaktanzasymmetrie eliminierende Reaktanzschleife einzufügen (DE-PS 35 16 940). Bei den vielfach vorliegenden räumlich beengten Bedingungen sind mit dem Einsatz der Reaktanzschleife Probleme verbunden.When operating three-phase arc furnaces, for example, the problem arises that in the case of support arms arranged for the electrodes, the middle current path has a lower inductance than the outer current paths. To correct the so-called reactance asymmetry, it has been proposed, inter alia, to insert a reactance loop which eliminates the reactance asymmetry in the middle current path (DE-PS 35 16 940). Given the often confined space conditions, there are problems associated with the use of the reactance loop.

Ausgehend vom Stand der Technik liegt der Erfindung in erster Linie die Aufgabe zugrunde, für die Behebung der Reaktanzasymmetrie eine raum- bzw. platzsparende Lösung anzubieten.Starting from the prior art, the primary object of the invention is to offer a space-saving or space-saving solution for rectifying the reactance asymmetry.

Die Aufgabe wird mit einer die Induktivität eines gekühlten Hochstromkabels erhöhende Leiteranordnung gelöst, die erfindungsgemaß entsprechend dem kennzeichnenden Teil des Anspruches 1 ausgebildet ist.The object is achieved with a conductor arrangement which increases the inductance of a cooled high-current cable and which is designed according to the invention in accordance with the characterizing part of claim 1.

Durch die einen Leiterabschnitt umgebende, gegenüber dem Leiter isolierte Eisenhülse erfolgt eine Erhöhung der Induktivität in dem Hochstromkabel, dem die Leiteranordnung zugeordnet ist. Querschnitt, Wandstärke und/oder Länge der Eisenhülse bestimmen die durch die erfindungsgemäße Leiteranordnung erzeugte Zusatzinduktivität und werden den jeweiligen Erfordernissen Rechnung tragend gewählt. Die die Induktivität erhöhende Leiteranordnung läßt sich raumsparend in den Strompfad einfügen, dessen Induktivität der Erhöhung bedarf. Die neue Leiteranordnung läßt sich dann auch leichter und kostengünstiger fertigen als etwa eine Reaktanzschleife.The iron sleeve surrounding a conductor section and insulated from the conductor increases the inductance in the high-current cable to which the conductor arrangement is assigned. The cross section, wall thickness and / or length of the iron sleeve determine the additional inductance generated by the conductor arrangement according to the invention and are chosen to take account of the respective requirements. The conductor arrangement which increases the inductance can be inserted into the current path in a space-saving manner, the inductance of which requires the increase. The new conductor arrangement can then also be manufactured more easily and cost-effectively than, for example, a reactance loop.

Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen 1 bis 8.Embodiments of the invention result from subclaims 1 to 8.

In der Zeichnung ist die Erfindung weitergehend erläutert.

Figur 1
eine erfindungsgemäße Leiteranordnung in Ansicht, in einem Teilbereich aufgebrochen,
Figur 2
einen Längsschnitt durch den Bereich II in Figur 1.
Figur 3
einen Schnitt nach Linie III - III"' in Figur 2,
Figur 4
eine der Figur 2 entsprechende Darstellung von einer, einer Hohlleiter aufweisenden Leiteranordnung
Figur 5
einen Schnitt nach Linie V - V in Figur 4.
The invention is further explained in the drawing.
Figure 1
a conductor arrangement according to the invention in view, broken open in a partial area,
Figure 2
2 shows a longitudinal section through area II in FIG. 1.
Figure 3
2 shows a section along line III-III "'in FIG. 2,
Figure 4
a representation corresponding to Figure 2 of a, having a waveguide conductor arrangement
Figure 5
a section along line V - V in Figure 4.

Die Leiteranordnung in Figur 1 weist einen aus einer Mehrzahl von verdrillten Kupferadern 111, 112... gebildeten Vollleiter 11 auf, der an seinen Enden mit Anschlußstücken 12 und 12' versehen ist, über die die Verbindung zum Hochstromkabel hergestellt wird. Ein Teilbereich des Leiters 11 ist von einer Eisenhülse 13 umgeben. Die Endbereiche der Hülse 13 werden von von den Anschlußstücken 12 und 12' ausgehenden Schlauchabschnitten 14 und 14' übergriffen, die auf den Anschlußstücken 12 und 12' sowie auf der Eisenhülse 13 mittels Schellen 16 festgelegt sind. Mit 121 sind Kanäle in den Anschlußstücken 12, 12' bezeichnet, durch die das Kühlmittel zu- bzw. abgeleitet wird.The conductor arrangement in FIG. 1 has a solid conductor 11 formed from a plurality of twisted copper wires 111, 112 ..., which is provided at its ends with connecting pieces 12 and 12 ', via which the connection to the high-current cable is established. A partial area of the conductor 11 is surrounded by an iron sleeve 13. The end regions of the sleeve 13 are overlapped by hose sections 14 and 14 'starting from the connecting pieces 12 and 12', which are fixed on the connecting pieces 12 and 12 'and on the iron sleeve 13 by means of clamps 16. With 121 channels in the connecting pieces 12, 12 'are designated, through which the coolant is supplied or discharged.

Wie aus den Figuren 2 und 3 ersichtlich ist, sind der Eisenhülse 13 Distanzhülsen 17, 17' aus nichtleitendem Material zugeordnet, die einen Kontakt zwischen dem Leiter 11 und der Eisenhülse 13 unterbinden. Diese Distanzhülsen 17, 17' weisen zwecks Belassung eines Durchgangs für das Kühlmittel eine lichte Weite auf, die größer ist als der Querschnitt des Leiters 11. Die Distanzhülsen 17 und 17' sind eingelagert in Rücksprünge 131, 131' in der Eisenhülse 13. Die in den Endbereich der Eisenhülse 13 angesetzten Distanzhülsen 17' weisen überdies eine Schulter 171 auf, mit der sie gegen die jeweilige Stirnseite der Eisenhülse 13 zur Anlage kommen.As can be seen from FIGS. 2 and 3, the iron sleeve 13 is assigned spacer sleeves 17, 17 'made of non-conductive material, which prevent contact between the conductor 11 and the iron sleeve 13. In order to leave a passage for the coolant, these spacer sleeves 17, 17 'have a clear width which is greater than the cross section of the conductor 11. The spacer sleeves 17 and 17' are embedded in recesses 131, 131 'in the iron sleeve 13. The in the end portion of the iron sleeve 13 attached Spacer sleeves 17 'also have a shoulder 171 with which they come to rest against the respective end face of the iron sleeve 13.

Querschnitt, Wandstärke und/oder Länge der Eisenhülse 13 werden im Hinblick auf die im Einzelfall gewünschte bzw. erforderliche Zusatz-Induktivität gewählt.The cross section, wall thickness and / or length of the iron sleeve 13 are selected with a view to the additional inductance desired or required in the individual case.

Die in den Figuren 4 und 5 wiedergegebene Ausführungsform unterscheidet sich von der Ausführungsform nach den Figuren 1 bis 3 lediglich darin, daß der Leiter 21 ein Hohlleiter ist, der aus auf einem tragenden Rohr 22 aufgebrachten Adern 211, 212... gebildet ist, (insbesondere Figur 5). Eine entsprechende Leiteranordnung kommt zum Einsatz, wenn sich eine stärkere Kühlung des Hochstromkabels als erforderlich erweist.The embodiment shown in FIGS. 4 and 5 differs from the embodiment according to FIGS. 1 to 3 only in that the conductor 21 is a waveguide which is formed from wires 211, 212... Applied on a supporting tube 22 ( in particular Figure 5). A corresponding conductor arrangement is used when it is necessary to cool the high-current cable more than necessary.

Claims (8)

  1. Conductor arrangement, which increases the inductance of a cooled heavy current cable and has a conductor (11; 21), characterised in that the conductor (11; 21) is surrounded by an iron sleeve (13), which is supported on the conductor (11; 21) via an insulation (17, 17'), which surrounds the conductor (11; 21) so as to leave a passage for a coolant, said sleeve being secured in position relative to the conductor (11; 21) and being adapted to the desired increase in inductance.
  2. Conductor arrangement according to claim 1, characterised in that the insulation surrounding the conductor (11; 21) is a sleeve of non-conductive material.
  3. Conductor arrangement according to claim 1, characterised in that the insulation surrounding the conductor (11; 21) is formed by spacer sleeves (17, 17') of non-conductive material, which are mounted in the iron sleeve (13) at least with spacings therebetween.
  4. Conductor arrangement according to claim 3, characterised by spacer sleeves (17, 17'), which are mounted in position in sockets (131, 131') in the iron sleeve (13).
  5. Conductor arrangement according to one of claims 1 to 4, characterised by tubular portions (14, 14'), which extend between the iron sleeve (13) and connecting-pieces (12, 12') of the conductor (11; 21) and are secured on the iron sleeve (13) and the connecting-pieces (12, 12').
  6. Conductor arrangement according to one of claims 1 to 4, characterised by a through-tube, which extends between connecting-pieces (12, 12') and is secured on the connecting-pieces (12, 12') and opposite the iron sleeve (13).
  7. Conductor arrangement according to one of claims 1 to 6, characterised in that the conductor (11) is formed from a plurality of twisted wires (111, 112).
  8. Conductor arrangement according to one of claims 1 to 6, characterised in that the conductor is a hollow conductor (21), which is formed from wires (211, 212) mounted on a supporting sleeve (22).
EP93117645A 1992-11-12 1993-10-30 Conductor section for increasing the inductance of a cooled peak current cable Expired - Lifetime EP0597345B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9215389U DE9215389U1 (en) 1992-11-12 1992-11-12 Conductor section increasing the inductance of a cooled high-current cable
DE9215389U 1992-11-12

Publications (2)

Publication Number Publication Date
EP0597345A1 EP0597345A1 (en) 1994-05-18
EP0597345B1 true EP0597345B1 (en) 1996-10-16

Family

ID=6885939

Family Applications (1)

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EP93117645A Expired - Lifetime EP0597345B1 (en) 1992-11-12 1993-10-30 Conductor section for increasing the inductance of a cooled peak current cable

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EP (1) EP0597345B1 (en)
AT (1) ATE144366T1 (en)
DE (2) DE9215389U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7684051B2 (en) 2006-04-18 2010-03-23 Halliburton Energy Services, Inc. Fiber optic seismic sensor based on MEMS cantilever
US7782465B2 (en) 2005-03-16 2010-08-24 Halliburton Energy Services, Inc. High intensity fabry-perot sensor
US7787128B2 (en) 2007-01-24 2010-08-31 Halliburton Energy Services, Inc. Transducer for measuring environmental parameters
US7864329B2 (en) 2004-12-21 2011-01-04 Halliburton Energy Services, Inc. Fiber optic sensor system having circulators, Bragg gratings and couplers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285640B (en) * 1965-01-28 1968-12-19 Demag Elektrometallurgie Gmbh Electric furnace with movable electrodes
SE322850B (en) * 1965-06-10 1970-04-20 Asea Ab
GB1280762A (en) * 1970-02-27 1972-07-05 Central Electr Generat Board Improvements in or relating to electric cables
DE2212214C3 (en) * 1972-03-14 1982-04-15 Fried. Krupp Gmbh, 4300 Essen Liquid-cooled flexible electrical line for metallurgical furnaces or the like.
GB2093261B (en) * 1981-02-13 1984-11-28 Pirelli General Plc Electric cable
DE3516940C3 (en) * 1985-05-10 1995-09-21 Fuchs Systemtechnik Gmbh Arc furnace with reactance loop in the high-current conductor
DE3814261A1 (en) * 1988-04-27 1989-11-09 Fuchs Systemtechnik Gmbh Arc furnace having additional connectable reactance

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7864329B2 (en) 2004-12-21 2011-01-04 Halliburton Energy Services, Inc. Fiber optic sensor system having circulators, Bragg gratings and couplers
US7782465B2 (en) 2005-03-16 2010-08-24 Halliburton Energy Services, Inc. High intensity fabry-perot sensor
US7684051B2 (en) 2006-04-18 2010-03-23 Halliburton Energy Services, Inc. Fiber optic seismic sensor based on MEMS cantilever
US7787128B2 (en) 2007-01-24 2010-08-31 Halliburton Energy Services, Inc. Transducer for measuring environmental parameters

Also Published As

Publication number Publication date
EP0597345A1 (en) 1994-05-18
DE59304187D1 (en) 1996-11-21
ATE144366T1 (en) 1996-11-15
DE9215389U1 (en) 1994-03-17

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