EP0127568B1 - Kühlungsvorrichtung für Elektrodennippelverbindung an Lichtbogenöfen - Google Patents

Kühlungsvorrichtung für Elektrodennippelverbindung an Lichtbogenöfen Download PDF

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Publication number
EP0127568B1
EP0127568B1 EP84730042A EP84730042A EP0127568B1 EP 0127568 B1 EP0127568 B1 EP 0127568B1 EP 84730042 A EP84730042 A EP 84730042A EP 84730042 A EP84730042 A EP 84730042A EP 0127568 B1 EP0127568 B1 EP 0127568B1
Authority
EP
European Patent Office
Prior art keywords
nipple
electrode
wall
section
conical
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
EP84730042A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0127568A1 (de
Inventor
Luciano Ambrosi
Klaus Dipl.-Ing. Von Ploetz
Ludger Dr. Ing. Zangs
Friedrich Dr. Ing. Nordmeyer
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT84730042T priority Critical patent/ATE41581T1/de
Publication of EP0127568A1 publication Critical patent/EP0127568A1/de
Application granted granted Critical
Publication of EP0127568B1 publication Critical patent/EP0127568B1/de
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
    • H05B7/12—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 cooling device for electrode connection nipples for arc furnaces according to the preamble of the claim.
  • a composite electrode is known, the upper section - which is made of steel - is cooled.
  • This permanent section is connected to the graphite electrode section by means of a nipple, the latter being designed as a double cone and screwed into both sections.
  • the nipple is made of the same material as the lower electrode section, i.e. graphite.
  • the cooling liquid is guided in the interior of the upper electrode section in such a way that the nipple is also sufficiently cooled.
  • Cooling is of particular importance because box breakage often occurs, particularly in the area of the nippling, which damages the furnace operation very much.
  • a graphite electrode is known from DE-A1-31 44 926, which can be positively engaged with an electrode holder of an electric furnace.
  • very high temperatures occur in practice. This will damage the tie rod head, the connector and especially the tie rod.
  • the non-contact arrangement of the electrode connection device inside the double-walled current-carrying tube is not sufficient to cool the device and the nipple.
  • a cooling device of an electrode nipple connection according to the preamble of the patent claim is known from EP-A1-0 053 200.
  • the object of the invention is to provide an effective cooling device for the electrode sections of a composite electrode which are connected to one another by tensile force, the electrical current flowing exclusively through the outer surfaces of the electrodes and not through the nipple. to find.
  • the nipple and the connecting elements are intensively g, e-cooled by contact pressure over the entire conical contact surface of the cooling sleeve.
  • the water connections of the sleeve do not have to be disconnected when tapping on and off.
  • the electrode is double-walled, with the cooling chamber connected to the cooling circuit.
  • the nipple 2 is positively connected to the electrode 1 and the metal transducer 3 via a thread, the upper part of the nipple 2 or the transducer 3 is conical in the example shown.
  • the transducer 3 with the nipple 2 and the electrode 1 is firmly attracted to the end face K of the water-cooled electrode section 9.
  • the transducer 3 slides with its conical outer surface into the conical opening of a cooling sleeve 5.
  • the cooling sleeve 5 is guided over guide rods 8 in a guide ring 7 and pressed onto the transducer 3 via springs 6, so that between the contact surfaces of the Sensor 3 and the cooling sleeve 5 a good contact arises.
  • the cooling sleeve 5 is water-cooled and connected to a water cooling circuit via the lines 11 and 13.
  • a corrugated tube (compensator) 10 in the water pipes to compensate for the upward movement caused when the tube is pulled up.
  • This corrugated tube can also be designed such that, in addition to the compensation, it also has the function of the axial movement of the sleeve 5 in the direction of the lower electrode section 1, corresponding to the springs 6.
  • Flow guide plates 4 are arranged in the cooling sleeve 5 in order to intensify the cooling.
  • the electrode section 9 is of double-walled design, the part receiving the cooling liquid being designated 21.
  • the gripping claws 12 engage the pulling head 20 of the pickup 3. They are articulated to a claw head, to which the pull rod 14 is connected.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Heating (AREA)
  • Furnace Details (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
EP84730042A 1983-05-26 1984-04-16 Kühlungsvorrichtung für Elektrodennippelverbindung an Lichtbogenöfen Expired EP0127568B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84730042T ATE41581T1 (de) 1983-05-26 1984-04-16 Kuehlungsvorrichtung fuer elektrodennippelverbindung an lichtbogenoefen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3319389A DE3319389C2 (de) 1983-05-26 1983-05-26 Elektrode für Lichtbogenöfen
DE3319389 1983-05-26

Publications (2)

Publication Number Publication Date
EP0127568A1 EP0127568A1 (de) 1984-12-05
EP0127568B1 true EP0127568B1 (de) 1989-03-15

Family

ID=6200103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84730042A Expired EP0127568B1 (de) 1983-05-26 1984-04-16 Kühlungsvorrichtung für Elektrodennippelverbindung an Lichtbogenöfen

Country Status (7)

Country Link
US (1) US4615036A (da)
EP (1) EP0127568B1 (da)
JP (1) JPS59226499A (da)
AT (1) ATE41581T1 (da)
DE (1) DE3319389C2 (da)
DK (1) DK159037C (da)
ES (1) ES532661A0 (da)

Families Citing this family (1)

* 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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053200A1 (de) * 1980-12-02 1982-06-09 Arc Technologies Systems, Ltd. Elektrode für Lichtbogenschmelzöfen
EP0106767A1 (fr) * 1982-10-15 1984-04-25 Clecim Dispositif de mesure de tension d'arc sur un four électrique

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US824153A (en) * 1904-05-03 1906-06-26 Willson Aluminum Company Carbon-holder for electric furnaces.
US4121042A (en) * 1976-09-01 1978-10-17 The Steel Company Of Canada Limited Composite electrode with non-consumable upper section
US4168392A (en) * 1976-09-01 1979-09-18 The Steel Company Of Canada, Limited Composite electrode with non-consumable upper section
US4287381A (en) * 1978-12-19 1981-09-01 British Steel Corporation Electric arc furnace electrodes
GB2087699B (en) * 1980-11-17 1984-07-18 Leybold Heraeus Gmbh & Co Kg Graphite electrode for use in an electric furnace
DE3144926C2 (de) * 1980-11-17 1987-04-16 Leybold-Heraeus GmbH, 5000 Köln Grafitelektrode für den Einsatz in einen Elektrodenhalter eines Elektroofens
DE3102776A1 (de) * 1981-01-28 1982-08-26 C. Conradty Nürnberg GmbH & Co KG, 8505 Röthenbach Elektrode fuer lichtbogenoefen
ATE14816T1 (de) * 1981-03-24 1985-08-15 Krupp Gmbh Hochstromleitungssystem fuer elektrooefen.
CA1199358A (en) * 1982-06-04 1986-01-14 Robert W. Montgomery Electric arc furnace electrodes
US4451926A (en) * 1982-08-03 1984-05-29 Great Lakes Carbon Corporation Composite electrode for arc furnace

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053200A1 (de) * 1980-12-02 1982-06-09 Arc Technologies Systems, Ltd. Elektrode für Lichtbogenschmelzöfen
EP0106767A1 (fr) * 1982-10-15 1984-04-25 Clecim Dispositif de mesure de tension d'arc sur un four électrique

Also Published As

Publication number Publication date
JPH0372192B2 (da) 1991-11-15
DK159037B (da) 1990-08-20
US4615036A (en) 1986-09-30
DK258184D0 (da) 1984-05-25
ATE41581T1 (de) 1989-04-15
JPS59226499A (ja) 1984-12-19
DE3319389A1 (de) 1984-11-29
ES8502830A1 (es) 1985-01-16
DK159037C (da) 1991-02-04
DK258184A (da) 1984-11-27
ES532661A0 (es) 1985-01-16
DE3319389C2 (de) 1987-03-05
EP0127568A1 (de) 1984-12-05

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