EP0010305A1 - Support refroidi par un liquide pour l'extrémité d'une électrode - Google Patents

Support refroidi par un liquide pour l'extrémité d'une électrode Download PDF

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Publication number
EP0010305A1
EP0010305A1 EP79104036A EP79104036A EP0010305A1 EP 0010305 A1 EP0010305 A1 EP 0010305A1 EP 79104036 A EP79104036 A EP 79104036A EP 79104036 A EP79104036 A EP 79104036A EP 0010305 A1 EP0010305 A1 EP 0010305A1
Authority
EP
European Patent Office
Prior art keywords
liquid
holder according
electrode
cooled holder
cooled
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.)
Granted
Application number
EP79104036A
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German (de)
English (en)
Other versions
EP0010305B1 (fr
Inventor
Emil Dr.-Ing. Elsner
Rudolf Dr.-Ing. Kasper
William Ernst Dr.-Ing. Schwabe
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.)
Primetals Technologies Germany GmbH
Original Assignee
Fuchs Systemtechnik GmbH
Korf and Fuchs Systemtechnik GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6052491&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0010305(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fuchs Systemtechnik GmbH, Korf and Fuchs Systemtechnik GmbH filed Critical Fuchs Systemtechnik GmbH
Priority to AT79104036T priority Critical patent/ATE43T1/de
Publication of EP0010305A1 publication Critical patent/EP0010305A1/fr
Application granted granted Critical
Publication of EP0010305B1 publication Critical patent/EP0010305B1/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
    • 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 liquid-cooled holder for the tip of an electrode of an arc melting furnace according to the preamble of claim 1.
  • Liquid-cooled holders of this type which form the upper part of an arc electrode with an edible or non-edible electrode tip, have become known, for example, from DE-OS 1 565 207.
  • a tubular heat screen made of very heat-resistant material, such as ceramic, surrounding the cooling system is provided.
  • ceramic covering it can be provided with a wire insert.
  • Arc flashovers occur between the liquid system that conducts the electrical current of the arc electrode and the metallic insert of the electric arc furnace.
  • the pipe system for the coolant will also be damaged very quickly, which could result in water leaks in the arc furnace and explosions.
  • an electrode with a wire insert in the ceramic heat shield is somewhat better protected than one without a wire insert, but here too, damage is not ruled out, which leads to the consequences mentioned.
  • the aim of the invention is a liquid-cooled holder of the type mentioned in the introduction for an electrode tip which, with a surprisingly simple structure, not only ensures the desired thermal shielding of the metallic cooling system from the furnace atmosphere, but also better mechanical protection.
  • the invention is based on the knowledge that a heat shield made of a metal tube, which is electrically insulated from the current-carrying cooling system, can be adequately cooled via a refractory substance present between the cooling system and the metal tube while maintaining the required electrical insulation, ie at a temperature below the Softening point, especially at temperatures below 600 ° C, can be kept.
  • a steel jacket can be used as a heat shield, i.e. a very simple structural element that offers excellent mechanical protection.
  • the liquid-cooled holder 1 shown in FIGS. 1 to 3 for the tip of an electrode of an arc melting furnace, not shown, contains a cylindrical clamping part 2 which can be fastened to the electrode support arm and in this case has a separate water cooling system, and a metallic cooling system which carries the electrode current and is fastened thereon 3, which in the present case consists of four flow tubes 4 to 7, which at the lower end carry a threaded part 8 in the form of a nipple for screwing on the electrode tip.
  • the nipple 8 which is preferably made of copper, contains two channels 9 and 10.
  • the flow tubes 4 and 5 are connected through the channel 9 and the flow tubes 6 and 7 are connected through the channel 10. This serves in each of the two pairs of flow pipes 4 and 5 or 6 and 7, a flow pipe as a feed line and the other as a return line for the coolant.
  • the metallic cooling system 3 is surrounded by a metal tube 11 at a distance.
  • the metal tube is electrically insulated from the current-carrying cooling system 3.
  • a flange 12 welded to the metal tube 11 is fastened to the bottom of the cup-shaped holder 2 via a spacer ring 13 made of heat-resistant insulating material.
  • a screw connection is selected as the fastening.
  • four screw-nut pairs 14 made of non-magnetic steel are provided, which are insulated from the metallic parts by spacers 15 and 16 made of heat-resistant insulating material - in the present case, shrinking temperature is chosen. These screws and nuts could also consist of an insulating material.
  • the power pipes of the cooling system 3 are made of copper. If the metal tube 11 is not also used to carry the electrode tip, it may be expedient to provide another gu: electrically conductive material for the current tubes which has a higher strength.
  • the refractory mass should: on the one hand ensure sufficient heat transfer between the metal pipe 11 to be cooled and the cooling system 3, and on the other hand also good electrical insulation between the metal pipe 11 and the parts of the cooling system which carry the electrical current. Good results have been achieved with regard to this requirement with a refractory mass made of magnesium oxide sand or an alumina ramming mass.
  • a ramming mass or a pourable material The manufacture of the electrode is a refractory substance. as can be easily seen, extremely simple. After the metal tube 11 has been fastened to the clamping part 2, the space between the cooling system and the metal tube only needs to be filled, stamped out or poured out with the refractory material.
  • a soft carbon steel can be used as the material for the metal tube 11.
  • more advantageous are non-magnetic, scaling-resistant steels or possibly other highly heat-resistant non-magnetic metals.
  • the second exemplary embodiment namely the liquid-cooled holder 1 a according to FIGS. 4 to 6, contains a cylindrical clamping part 2 a which can be fastened to the electrode support arm.
  • This clamping part 2a together with the pipe 18, which is preferably made of copper, and the threaded part 8a in the form of a nipple, forms the conductor system or cooling system 3a carrying the electrode current and the cooling liquid.
  • a welded or cast metal part 19 is fitted and inserted into the cooling system 3 a carrying the electrode current and the cooling liquid.
  • 20 and 21 represent water supply and drainage.
  • horizontal baffle plates 23 are provided, which are fixedly connected to the part 19 or formed in one piece.
  • the cooling system guiding the electrode current and the cooling liquid is surrounded at a distance by a metal tube 11a.
  • the metal tube 11a is again electrically insulated from the current-carrying cooling system.
  • a flange 12a welded to the metal tube 11a is in turn attached to the lower end of the cylindrical clamping part 2a via a spacer ring 13a made of heat-resistant insulating material.
  • a screw connection 14a, 15a similar to the previously described exemplary embodiment is selected as the fastening.
  • a ring-shaped, metallic sheet 24 is welded or screwed onto the outer surface of the metal pipe 11a.
  • the refractory substance 17a according to the first exemplary embodiment is arranged between the metal tube 11a and the tube 18 carrying the electrode current and the cooling liquid.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Discharge Heating (AREA)
EP79104036A 1978-10-18 1979-10-18 Support refroidi par un liquide pour l'extrémité d'une électrode Expired EP0010305B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79104036T ATE43T1 (de) 1978-10-18 1979-10-18 Fluessigkeitsgekuehlte halterung fuer eine elektrodenspitze.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2845367 1978-10-18
DE2845367A DE2845367C2 (de) 1978-10-18 1978-10-18 FlUssigkeitsgekühlte Halterung für die Spitze einer Elektrode eines Lichtbogenschmelzofens

Publications (2)

Publication Number Publication Date
EP0010305A1 true EP0010305A1 (fr) 1980-04-30
EP0010305B1 EP0010305B1 (fr) 1981-04-22

Family

ID=6052491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104036A Expired EP0010305B1 (fr) 1978-10-18 1979-10-18 Support refroidi par un liquide pour l'extrémité d'une électrode

Country Status (11)

Country Link
US (1) US4291190A (fr)
EP (1) EP0010305B1 (fr)
JP (1) JPS5557295A (fr)
AR (1) AR220782A1 (fr)
AT (1) ATE43T1 (fr)
BR (1) BR7906676A (fr)
CA (1) CA1131278A (fr)
DE (2) DE2845367C2 (fr)
ES (1) ES485398A1 (fr)
GB (1) GB2036517B (fr)
MX (1) MX146063A (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051074A1 (fr) * 1980-10-27 1982-05-12 Arc Technologies Systems, Ltd. Electrode pour fours à arc
EP0050683A1 (fr) * 1980-10-27 1982-05-05 Arc Technologies Systems, Ltd. Electrode pour fours à arc
DE3071711D1 (en) * 1980-10-27 1986-09-25 Arc Tech Syst Ltd Electrode for arc furnaces
DE3102776A1 (de) * 1981-01-28 1982-08-26 C. Conradty Nürnberg GmbH & Co KG, 8505 Röthenbach Elektrode fuer lichtbogenoefen
DE3116221A1 (de) * 1981-04-23 1982-11-11 C. Conradty Nürnberg GmbH & Co KG, 8505 Röthenbach Elektrode fuer lichtbogenoefen und deren verwendung
DE3135960A1 (de) * 1981-09-10 1983-06-01 Arc Technologies Systems, Ltd., Grand Cayman, Cayman Island Axial verschiebbarer elektrodenhalter zum einsatz bei der elektrostahlerzeugung
ZA826996B (en) * 1981-10-15 1983-07-27 Von Roll Ag Process for preventing burn-off on a current-conducting electrode for metallurgical furnaces and electrodes
KR840002095A (ko) * 1981-11-09 1984-06-11 베른하르트 퀴게레 전기 아크로(爐)용 전극홀더
ZA832152B (en) * 1982-04-23 1983-12-28 Arc Tech Syst Ltd Arrangement of an electrode for arc furnaces
US4433419A (en) * 1982-04-23 1984-02-21 Owens-Corning Fiberglas Corporation Electrode purge sleeve for glass melting furnaces
US4453913A (en) * 1982-05-21 1984-06-12 The Cadre Corporation Recuperative burner
CA1199358A (fr) * 1982-06-04 1986-01-14 Robert W. Montgomery Electrodes pour four electrique a arc
US4416014A (en) * 1982-08-03 1983-11-15 Great Lakes Carbon Corporation Composite electrode for arc furnace
US4490824A (en) * 1983-07-15 1984-12-25 Great Lakes Carbon Corporation Composite electrode for arc furnace
US4513425A (en) * 1983-07-15 1985-04-23 Great Lakes Carbon Corporation Composite electrode for arc furnace
DE3339514A1 (de) * 1983-10-28 1985-05-09 Mannesmann AG, 4000 Düsseldorf Elektrodenanordnung in warmgaengigen gefaessen
US4603424A (en) * 1983-12-07 1986-07-29 Fuchs Systemtechnik Gmbh Fluid-cooled carrier member of a composite electrode of an electric arc furnace
DE3344283A1 (de) * 1983-12-07 1985-06-20 Fuchs Systemtechnik GmbH, 7601 Willstätt Fluessigkeitsgekuehlte halterung fuer eine verzehrbare elektrode eines lichtbogenofens
MX173237B (es) * 1990-08-21 1994-02-10 Blas Diaz Pena Mejoras en electrodo para hornos electricos de fundicion de metales, no consumible y enfriado por agua
ES2147061B1 (es) * 1996-10-31 2001-04-01 Fundacion Inasmet Antorcha de plasma perfeccionada con electrodo refrigerado de recambio rapido.
RU2145469C1 (ru) * 1997-12-09 2000-02-10 Бершицкий Игорь Михайлович Электрододержатель дуговой электропечи
RU2316704C1 (ru) * 2006-04-18 2008-02-10 Закрытое акционерное общество "ТЭК-98" (ЗАО "ТЭК-98") Электрододержатель дуговой электропечи
RU2705832C1 (ru) * 2019-04-11 2019-11-12 Федеральное государственное бюджетное образовательное учреждение высшего образования "Чувашский государственный университет имени И.Н. Ульянова" Электрододержатель дуговой электропечи
CN112029955A (zh) * 2020-08-21 2020-12-04 石家庄钢铁有限责任公司 一种电炉炼钢导电横臂保护方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR461030A (fr) * 1912-09-18 1913-12-17 Krupp Ag électrode à tete métallique refroidie
FR1556531A (fr) * 1967-02-23 1969-02-07
DE1565751A1 (de) * 1965-07-13 1970-02-12 Oestberg Jan Erik Elektrode fuer elektrische Lichtbogenoefen
FR2176546A1 (en) * 1972-03-23 1973-11-02 Siderurgie Fse Inst Rech Composite furnace electrode - esp for steel prodn
DE2430817A1 (de) * 1974-06-27 1976-01-15 Sigri Elektrographit Gmbh Elektrode fuer lichtbogenoefen
DE2739483A1 (de) * 1976-09-01 1978-03-02 Canada Steel Co Zusammengesetzte elektrode fuer lichtbogenoefen
BE867876A (fr) * 1977-06-06 1978-10-02 Korf Stahl Electrode pour fours a sec

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941383C (de) * 1942-02-04 1956-04-12 Saint Gobain Hohle Elektrode fuer elektrische Glasschmelzoefen, insbesondere Glasspinnoefen
US3392227A (en) * 1965-07-13 1968-07-09 Jan Erik Ostberg Electrode for arc furnaces
US4145564A (en) * 1978-01-30 1979-03-20 Andrew Dennie J Non-consumable electrode with replaceable graphite tip

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR461030A (fr) * 1912-09-18 1913-12-17 Krupp Ag électrode à tete métallique refroidie
DE1565751A1 (de) * 1965-07-13 1970-02-12 Oestberg Jan Erik Elektrode fuer elektrische Lichtbogenoefen
FR1556531A (fr) * 1967-02-23 1969-02-07
FR2176546A1 (en) * 1972-03-23 1973-11-02 Siderurgie Fse Inst Rech Composite furnace electrode - esp for steel prodn
DE2430817A1 (de) * 1974-06-27 1976-01-15 Sigri Elektrographit Gmbh Elektrode fuer lichtbogenoefen
DE2739483A1 (de) * 1976-09-01 1978-03-02 Canada Steel Co Zusammengesetzte elektrode fuer lichtbogenoefen
BE867876A (fr) * 1977-06-06 1978-10-02 Korf Stahl Electrode pour fours a sec

Also Published As

Publication number Publication date
ATE43T1 (de) 1981-05-15
BR7906676A (pt) 1980-07-22
JPS5557295A (en) 1980-04-26
EP0010305B1 (fr) 1981-04-22
DE2960277D1 (en) 1981-07-30
GB2036517A (en) 1980-06-25
CA1131278A (fr) 1982-09-07
DE2845367C2 (de) 1981-01-22
DE2845367B1 (de) 1980-04-24
US4291190A (en) 1981-09-22
AR220782A1 (es) 1980-11-28
MX146063A (es) 1982-05-07
GB2036517B (en) 1982-11-10
ES485398A1 (es) 1980-05-16

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