EP0099849B1 - Dispositif de positionnement des électrodes dans un four à arc - Google Patents

Dispositif de positionnement des électrodes dans un four à arc Download PDF

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Publication number
EP0099849B1
EP0099849B1 EP83710039A EP83710039A EP0099849B1 EP 0099849 B1 EP0099849 B1 EP 0099849B1 EP 83710039 A EP83710039 A EP 83710039A EP 83710039 A EP83710039 A EP 83710039A EP 0099849 B1 EP0099849 B1 EP 0099849B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic fluid
column
electrode
cylinder
hydraulic
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
EP83710039A
Other languages
German (de)
English (en)
Other versions
EP0099849A2 (fr
EP0099849A3 (en
Inventor
Kjell Dipl.-Ing. Bergman
Erik Lassander
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Publication of EP0099849A2 publication Critical patent/EP0099849A2/fr
Publication of EP0099849A3 publication Critical patent/EP0099849A3/de
Application granted granted Critical
Publication of EP0099849B1 publication Critical patent/EP0099849B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to an arrangement for positioning electrodes in arc furnaces according to the preamble of claim 1.
  • a problem with such ovens is that the operating surface on the oven can be exposed in order to allow the oven vault (lid) including the electrode column to be pivoted out. This has previously been prevented by the hydraulic cylinder and the furnace vault connected to it. Furthermore, a quick and effective possibility of actuation for the electrodes and their positioning in or on the furnace is desired.
  • the object of the invention is to develop an arrangement of the type mentioned at the outset which enables the furnace vault to pivot out and the electrodes to be quickly positioned.
  • the hydraulic cylinder can be quickly brought to the desired altitude, for example when loading the furnace.
  • FIG 1 shows an electrode 2 attached to the free end of an electrode arm 1 for an arc furnace for direct or alternating current.
  • An electrode column 3 with a double-acting hydraulic cylinder arranged in its interior supports the electrode arm 1 and can move it in the vertical direction.
  • FIGS. 2 and 3 show the electrode column 3 with its double-acting hydraulic cylinder on the inside.
  • the double-acting piston 5 for the hydraulic cylinder is in its lowest position in the cylinder 4, and the piston rod 6 of the piston rests on a support bracket 7.
  • the positioning of the electrode 2 by means of the electrode column 3 takes place in that hydraulic fluid via the central, continuous channel 8 in the piston rod 6 in the hydraulic cylinder or is discharged from this.
  • the direction of supply and discharge for the hydraulic fluid is indicated by the double arrow 9.
  • the procedure is such that hydraulic medium is introduced into the hydraulic cylinder via the central channel 8, as a result of which the piston 5 with the piston rod 6 is pressed into its lowest position.
  • the electrode column is actuated in the usual way by supplying and discharging hydraulic fluid from the hydraulic cylinder via the inlet at the double arrow 9.
  • the channel 12 can be one or more channels which are arranged to the side of the channel 8 or also concentrically to the latter are.

Landscapes

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

Claims (2)

1. Dispositif de mise en position d'électrodes (12) dans un four à arc électrique à courant continu ou à courant alternatif, comprenant une colonne (3) portant la (les) électrode (s) et munie à l'intérieur d'un vérin hydraulique (4) qui la soulève ou l'abaisse, caractérisé en ce qu'une tige de piston (6) ou un piston plongeur de ce vérin (4) est muni, en plus de son conduit normal pour l'agent hydraulique destiné à élever le vérin (4), d'au moins un conduit supplémentaire (12) pour l'agent hydraulique, qui débouche sous le piston (5) du vérin hydraulique de manière que, lors de l'admission d'agent hydraulique, la tige de piston (6) du vérin hydraulique (4) se déplace vers le haut, et en ce que des moyens mécaniques de fixation sont prévus pour fixer la colonne à électrodes (3) dans sa position d'extrémité supérieure.
2. Dispositif suivant la revendication 1, caractérisé en ce que la tige de piston ou le piston plongeur est muni d'un canal central (8) continu pour l'agent hydraulique pour soulever la colonne à électrodes, ainsi que d'au moins un conduit supplémentaire (12) pour de l'agent hydraulique qui est disposé soit latéralement par rapport au conduit mentionné en premier soit concentriquement autour du conduit mentionné en premier et qui débouche en dessous du piston hydraulique(5).
EP83710039A 1982-06-29 1983-06-22 Dispositif de positionnement des électrodes dans un four à arc Expired EP0099849B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8204001A SE431604B (sv) 1982-06-29 1982-06-29 Anordning for positionering av elektroder vid ljusbagsugnar
SE8204001 1982-06-29

Publications (3)

Publication Number Publication Date
EP0099849A2 EP0099849A2 (fr) 1984-02-01
EP0099849A3 EP0099849A3 (en) 1984-05-02
EP0099849B1 true EP0099849B1 (fr) 1986-10-15

Family

ID=20347216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83710039A Expired EP0099849B1 (fr) 1982-06-29 1983-06-22 Dispositif de positionnement des électrodes dans un four à arc

Country Status (5)

Country Link
US (1) US4473903A (fr)
EP (1) EP0099849B1 (fr)
JP (1) JPS5912596A (fr)
DE (1) DE3367024D1 (fr)
SE (1) SE431604B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4964114A (en) * 1986-11-26 1990-10-16 Mannesmann Ag Electrode positioning mechanism
DE3714870A1 (de) * 1987-05-05 1988-11-24 Krupp Gmbh Elektrodenreguliereinrichtung fuer einen lichtbogenofen
US20080084907A1 (en) * 2006-10-06 2008-04-10 David Arthur Lehr Cushioned Lifting Apparatus and Method of Lifting Carbon Based Electrodes
CN102761998A (zh) * 2012-07-23 2012-10-31 大连华锐重工集团股份有限公司 埋弧电炉电极升降装置
DE102012216847A1 (de) * 2012-09-20 2014-03-20 Siemens Vai Metals Technologies Gmbh Vorrichtung und Verfahren zum Wechseln mindestens einer Elektrode eines schmelzmetallurgischen Gefäßes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE428631C (de) * 1923-12-03 1926-05-10 Bbc Brown Boveri & Cie Hydraulische Verstellvorrichtung fuer die Elektroden elektrischer OEfen
US2296734A (en) * 1941-01-25 1942-09-22 Payne William Harvey Means for automatically controlling the electrodes of arc furnaces
US2469740A (en) * 1946-01-31 1949-05-10 Deiaware Engineering Corp Arc furnace with lift and swing aside roof
US2921107A (en) * 1958-07-01 1960-01-12 Mc Graw Edison Co Control system for arc furnace
US3255291A (en) * 1965-01-21 1966-06-07 Charles F Weisgerber Dynamic control apparatus for electric arc furnaces and the like
DE1802604A1 (de) * 1968-10-11 1970-05-27 Vnii Elektrotermiceskogo Oboru Leistungsmesser fuer Lichtbogenoefen
DE2403480A1 (de) * 1974-01-25 1975-08-07 Salzgitter Maschinen Ag Rueckvorrichtung, insbesondere fuer strebfoerderer
JPS5631714A (en) * 1979-08-26 1981-03-31 Seiji Mochizuki Core material for bedding
AT370871B (de) * 1981-01-08 1983-05-10 Voest Alpine Ag Elektroofen, wie lichtbogenofen oder plasmaschmelzofen

Also Published As

Publication number Publication date
SE8204001D0 (sv) 1982-06-29
US4473903A (en) 1984-09-25
DE3367024D1 (en) 1986-11-20
EP0099849A2 (fr) 1984-02-01
EP0099849A3 (en) 1984-05-02
SE431604B (sv) 1984-02-13
JPS5912596A (ja) 1984-01-23
SE8204001L (sv) 1983-12-30

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