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EP2545747A1 - Système à bras support d'électrodes - Google Patents

Système à bras support d'électrodes

Info

Publication number
EP2545747A1
EP2545747A1 EP11707833A EP11707833A EP2545747A1 EP 2545747 A1 EP2545747 A1 EP 2545747A1 EP 11707833 A EP11707833 A EP 11707833A EP 11707833 A EP11707833 A EP 11707833A EP 2545747 A1 EP2545747 A1 EP 2545747A1
Authority
EP
European Patent Office
Prior art keywords
electrode support
support arm
electrode
arm system
flow
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
EP11707833A
Other languages
German (de)
English (en)
Other versions
EP2545747B1 (fr
Inventor
Rolf Best
Peter Starke
Andreas Schüring
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.)
SMS Group GmbH
Original Assignee
SMS Siemag 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=44508065&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2545747(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP2545747A1 publication Critical patent/EP2545747A1/fr
Application granted granted Critical
Publication of EP2545747B1 publication Critical patent/EP2545747B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H05B7/00Heating by electric discharge
    • H05B7/02Details
    • H05B7/10Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00Heating by electric discharge
    • H05B7/02Details
    • H05B7/12Arrangements for cooling, sealing or protecting electrodes
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00Heating by electric discharge
    • H05B7/02Details
    • H05B7/10Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • H05B7/101Mountings, supports or terminals at head of electrode, i.e. at the end remote from the arc

Definitions

  • the invention relates to a Elektrodentragarmsystenn, preferably for electric arc furnaces and ladle furnaces, for attaching graphite electrodes.
  • the vertical movements are realized with a hydraulic or electromechanical lifting system on which the electrode support arm is mounted. Reversible clamps allow the graphite electrodes to be loosened and adjusted according to the burnup.
  • the invention has therefore set itself the goal of improving the Elektrodentragarmsystem.
  • the water flow is channeled and influenced in such a way that optimal flow velocities of the cooling medium are present at each point of the electrode support arm in order to ensure optimum heat dissipation.
  • the internals prevent any deposits from the cooling medium, since the flow rate in the electrode support arm can be kept relatively constant.
  • the invention relates to an electrode support system in which the electrode support arm is made of aluminum, steel with externally applied copper, or another material which is a good conductor of current, through an integrated potential-free electrode clamping device which makes it possible to implement these without insulating parts in the electrode support arm.
  • the clamping device is installed so modular within the Elektrodentragarms that bear the contact surfaces of the plate springs in the tensioned state, but not firmly connected to the lifting cylinder. This device allows installation without sensitive insulation materials. In case of repair, the components can be removed and installed without much effort because of the compact modular design, without having to dismantle the electrode support arm.
  • the design of the clamping device further allows to detect and monitor the state of the electrode contact pressure with a sensor.
  • the holding force generated by cup spring packs is thus detected and when falling below the previously defined minimum holding force is warned, so that in time a necessary replacement of the plate spring packages can be performed. This ensures that correctly working disc springs are not removed too early or too late in the event of a weakening holding force, which can otherwise result in unintentional arcing between the clamping device and the graphite electrode.
  • Electrode breakage monitoring can prevent damage to the electrode support arm and prevent production interruptions.
  • the screw connection remains unaffected by the magnetic field of the electric arc furnace, so that a resulting foreign heating is eliminated.
  • the screwed connections are therefore not subject to strength-reducing operating conditions. Likewise, the insulation is not exposed to uncontrolled thermal stress.
  • connection electrode support arm / guide column shows the connection electrode support arm / guide column.
  • each electrode support arm 1 is assigned a guide column 3, with the head region of which the respective electrode support arm is detachably connected.
  • An example of the connection is shown in FIG. 3, wherein here an insulating plate 6 arranged between the guide column head and the electrode support arm is shown.
  • the actual, releasable connection is made by screws 7 made of antimagnetic material.
  • the front region of the electrode support arm 1 -the electrode support arm head 13 -with the electrode holder 2 is reproduced in detail in FIG.
  • the holder 2 comprises the electrode (which is not shown here) over a large part of its circumference and presses it against the contact jaw fifth
  • the holder 2 comprising the electrode is operatively connected via the arms 11 to a disc spring pact 8 arranged in the interior of the front electrode carrier arm 13, this disc spring packet 8 bearing the holder - and thus the electrode - against the contact pad 5 draws.
  • the operative connection between the holder 2 or its arms 11 takes place via the pin 12 penetrating the plate spring package.
  • the bolt 12 On the back side, ie on the end facing away from the holder 2, the bolt 12 is in operative connection with a lifting cylinder 9, with the bolt against the pressure of the disc spring 8 of the bolt 12 in the direction of the holder is movable, so that the holder 2 opens slightly and thus An exchange of the electrode or a repositioning can be done according to the burnup.
  • the electrode support arms 1 and their front electrode support arm 13, to which the holder 2 is respectively connected, are water cooled, wherein it is essential that the flow guide for the cooling water inside the Electrodentragarmes and the Elektrodentragarmkopfes so that the flow rate at each point of the electrode support arm is optimal, so that optimal heat dissipation can be achieved.

Landscapes

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

Abstract

Système à bras support d'électrodes pour fours métallurgiques. L'invention concerne un système à bras support d'électrodes pour fours métallurgiques, comprenant un bras support d'électrodes (1) présentant à sa partie avant, une tête (13) de bras support d'électrodes configurée en tant que dispositif support d'électrodes, qui est conçu en tant que profilé creux, doté d'une paroi formée, au moins partiellement, en un matériau électroconducteur d'une conductivité élevée, à travers lequel peut circuler un agent réfrigérant. Il est prévu, à l'intérieur du bras support d'électrodes (1) configuré comme profilé creux, et du dispositif support d'électrodes configuré sur la tête (13) du bras support d'électrodes, de disposer des tôles de guidage d'écoulement et/ou des corps de refoulement, à travers lesquels le courant d'agent réfrigérant peut être canalisé et influencé eu égard à la vitesse d'écoulement, de façon qu'on obtienne, à chaque emplacement à l'intérieur du bras support d'électrodes (1) et de la tête (13) du bras support d'électrodes, des vitesses d'écoulement optimales du milieu réfrigérant, cependant que des zones à charge thermique élevée, telles que les surfaces de contact à la tête (13) du bras support d'électrodes, peuvent être refroidies de manière plus intensive que d'autres zones, à charge thermique moins élevée, dudit bras support d'électrodes (1).
EP11707833.7A 2010-03-10 2011-03-07 Système à bras support d'électrodes Revoked EP2545747B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010010994 2010-03-10
DE102010052086A DE102010052086A1 (de) 2010-03-10 2010-11-17 Elektrodentragarmsystem
PCT/EP2011/053384 WO2011110522A1 (fr) 2010-03-10 2011-03-07 Système à bras support d'électrodes

Publications (2)

Publication Number Publication Date
EP2545747A1 true EP2545747A1 (fr) 2013-01-16
EP2545747B1 EP2545747B1 (fr) 2014-05-14

Family

ID=44508065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11707833.7A Revoked EP2545747B1 (fr) 2010-03-10 2011-03-07 Système à bras support d'électrodes

Country Status (10)

Country Link
US (1) US20130039379A1 (fr)
EP (1) EP2545747B1 (fr)
JP (1) JP2013521625A (fr)
KR (1) KR20120123725A (fr)
CN (1) CN102870496B (fr)
BR (1) BR112012022762A2 (fr)
CA (1) CA2792909C (fr)
DE (1) DE102010052086A1 (fr)
MA (1) MA34210B1 (fr)
WO (1) WO2011110522A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9775198B2 (en) 2012-06-28 2017-09-26 Jacques Venter Electrode clamping device
FI125248B (en) * 2013-07-05 2015-07-31 Outotec Finland Oy Method and system for measuring clamping pressure in an electrode control device
DE102014001713B3 (de) * 2014-02-11 2015-03-26 Badische Stahl-Engineering Gmbh Elektrodentragarmkörper mit Tragkörper
DE102014208516A1 (de) 2014-05-07 2015-11-12 Sms Group Gmbh Vorrichtung zum Stützen eines Elektrodenarms einer Hochstromzuführung für einen metallurgischen Ofen
DE102018220594A1 (de) * 2018-11-29 2020-06-04 Sms Group Gmbh Vorrichtung und Verfahren zum Halten eines Elektrodentragarms
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
CN112738937B (zh) * 2021-02-05 2022-06-28 西安中天冶金工程有限公司 一种钢包精炼炉电极调节系统

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US3602624A (en) * 1970-03-11 1971-08-31 Dixie Bronze Co Unitized electrode holder for electric furnace electrodes or the like
DE3010894C2 (de) * 1980-03-21 1985-12-12 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Elektroden-Tragarm mit Öffnungsvorrichtung für Klemmbacken von elektrischen Lichtbogenöfen
US4422172A (en) * 1982-01-26 1983-12-20 Owens-Corning Fiberglas Corporation Electrode support mechanism and method
US4653066A (en) * 1984-04-11 1987-03-24 Dixie Arc, Inc. Electrode holder assembly and electrode clamp for electric arc furnaces
JPH0128640Y2 (fr) * 1985-02-05 1989-08-31
CN88202223U (zh) * 1988-03-22 1988-12-21 刘尚仁 矿热炉电极馈电装置
IT1242380B (it) * 1990-07-23 1994-03-04 Danieli Off Mecc Procedimento e dispositivo per il controllo della forza applicata sui bracci porta elettrodi del forno elettrico ad arco
DE4236158C1 (de) 1992-10-20 1994-03-17 Mannesmann Ag Elektrodentragarm für Lichtbogenöfen
CN2210505Y (zh) * 1994-07-23 1995-10-18 王德洪 导电水冷式电极横臂
CN2203011Y (zh) * 1994-11-09 1995-07-05 西安市东方钢铁设备研究所 全铝合金导电横臂及电极夹持装置
JPH09229571A (ja) * 1996-02-21 1997-09-05 Daido Steel Co Ltd アーク炉における電極長さの調整装置
JPH09260052A (ja) * 1996-03-22 1997-10-03 Daido Steel Co Ltd 電極支持装置
BR9712083A (pt) * 1996-08-30 2000-01-18 Melttran Inc Mecanismo de acionamento rotativo-translacional para dispositivos de posicionamento em um fundidor.
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CN1125308C (zh) * 1997-08-25 2003-10-22 贵州天和磷业股份有限公司 六相电极矿热炉
CN2417442Y (zh) * 2000-04-17 2001-01-31 宜兴市宇龙冶金电炉附件厂 直冷式铜瓦
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DE102004060826A1 (de) 2004-12-17 2006-06-29 Sms Demag Ag Sicherungseinrichtung zur Detektion von Elektrodenbrüchen
EP1901585B1 (fr) * 2006-09-18 2012-08-29 Homa Gesellschaft f. Hochstrom- Magnetschalter v. Vollenbroich GmbH & Co. KG Support de bras pour four à arc
JP4638464B2 (ja) * 2007-03-29 2011-02-23 三菱重工業株式会社 工作機械の主軸装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011110522A1 *

Also Published As

Publication number Publication date
CN102870496B (zh) 2015-11-25
BR112012022762A2 (pt) 2016-07-19
MA34210B1 (fr) 2013-05-02
JP2013521625A (ja) 2013-06-10
CA2792909A1 (fr) 2011-09-15
CA2792909C (fr) 2016-05-10
CN102870496A (zh) 2013-01-09
EP2545747B1 (fr) 2014-05-14
US20130039379A1 (en) 2013-02-14
WO2011110522A1 (fr) 2011-09-15
DE102010052086A1 (de) 2011-09-15
KR20120123725A (ko) 2012-11-09

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