EP1287723B1 - Verfahren und einrichtung zum wechseln der elektroden an einem elektrisch betriebenen metallurgischen gefäss, insbesondere an einem lichtbogenofen - Google Patents

Verfahren und einrichtung zum wechseln der elektroden an einem elektrisch betriebenen metallurgischen gefäss, insbesondere an einem lichtbogenofen Download PDF

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Publication number
EP1287723B1
EP1287723B1 EP01936398A EP01936398A EP1287723B1 EP 1287723 B1 EP1287723 B1 EP 1287723B1 EP 01936398 A EP01936398 A EP 01936398A EP 01936398 A EP01936398 A EP 01936398A EP 1287723 B1 EP1287723 B1 EP 1287723B1
Authority
EP
European Patent Office
Prior art keywords
changing
unit
adapter
vessel
hydraulic cylinders
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
EP01936398A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1287723A1 (de
Inventor
Guido Grund
Andreas Schüring
Kurt Ogorek
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 Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP1287723A1 publication Critical patent/EP1287723A1/de
Application granted granted Critical
Publication of EP1287723B1 publication Critical patent/EP1287723B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B7/109—Feeding arrangements

Definitions

  • the invention relates to a method and a device for changing the electrodes on an electrically operated metallurgical vessel, in particular on one Arc furnace, by exchanging a unit consisting of on a base plate arranged contact electrodes with electrical connections, coolant and Thermocouple connections, against a new unit.
  • Metallurgical vessels of this type in particular arc furnaces or shaft furnaces, are equipped with a metallic electrode attached to the jacket of the bottom of the vessel, on one side, e.g. from below, protrudes through the bottom of the vessel into the oven and connected to an electrical supply line on the outer side and is also cooled from this side.
  • the contact electrodes in the arc furnace are subject to one in relation to the furnace lining leading wear. Because the replacement of individual electrode rods requires a relatively large amount of time and work, one has started to replace all electrodes together.
  • a device for changing the electrode unit is also known (EP 0 219 650 A1).
  • the known procedure is based on a construction in which the electrodes, including the stamping out, are preassembled on a base plate and are lowered into the furnace bottom from above by means of a crane on an eyelet. After the centering has to be carried out in particular, the remaining annular gap between the electrode unit and the furnace bottom is filled with ramming compound. The pre-assembled eyelet is dissolved in the melt with the first melting process.
  • the electrode unit on the base plate is broken out in such a way that hydraulic cylinders are arranged beneath the electrode arrangement on claws, which break it out of the furnace floor via the base plate of the electrode arrangement.
  • the hydraulic cylinders raise the electrodes to such an extent that a crane with appropriate grippers can pull the electrodes upwards.
  • This procedure is disadvantageous in that the furnace base must be reinserted, ie stamped, when the new electrodes are inserted. Disadvantages of this procedure and of the device itself are primarily the complex work by means of a crane, the inaccurate centering in the furnace floor and the complex and expensive device for breaking out the electrode unit, which must be provided separately on each furnace vessel.
  • the imprecise centering of the electrodes has a not inconsiderable influence on the position of the magnetic fields and the associated deflection of the arc.
  • the invention has for its object without the expansion of the electrode units by means of a crane and without one tied to each oven vessel Assignment of hydraulic cylinders to get by, better centering to reach the electrode unit during installation and less repair work to have to carry out on the furnace floor after a change.
  • the object is achieved according to the invention on the basis of a method solved, in which the used unit after loosening from the bottom of the vessel a positioned change car or a change adapter lowered and transported away and where the new one, on a change car or on a Removable adapter inserted unit inserted into the bottom of the vessel from below and is attached, the change car or the change adapter with in pairs arranged hydraulic cylinders hydraulically connected in the positioned position and the piston rods self-centering laterally in coupling devices be retracted to the bottom of the vessel and locked.
  • This makes a crane for It is no longer necessary to change the anode above the furnace vessel and one furnace vessel no longer needs to be equipped with hydraulic cylinders.
  • can an automatic centering of the new unit take place and it is only necessary between the refractory lining and the used electrode unit re-insert brickwork removed during removal.
  • Another step of the procedure is that one with the hydraulic cylinders connected change adapter under the base plate of the unit with the contact electrodes lifted and a connection between the removable adapter and the Base plate is made.
  • the used unit can already be used as a change car aligned and centered.
  • the contact electrode unit is finally brought onto the change carriage by the wax adapter connected to the hydraulic cylinders due to its own weight the unit with the contact electrodes lowered via the hydraulic cylinders become.
  • the installation is carried out in such a way that the change carriage or the change adapter is positioned under the vessel and four hydraulic cylinders with the vessel bottom get connected.
  • the interchangeable adapter with the new unit it centers itself and is lifted into the furnace vessel with the hydraulic cylinders and attached there.
  • the device for changing the electrodes in an electrically operated metallurgical Vessel, especially in an arc furnace solves the task Avoid crane, hydraulic cylinders permanently present on every furnace vessel avoid and better center the unit to be replaced by on a
  • An interchangeable adapter with a mobile interchangeable trolley centrally under the bottom of the vessel hydraulic cylinders provided in pairs can be raised and lowered and by a coupling device is provided on the piston rods of each can be connected self-centering with a counter coupling on the bottom of the vessel.
  • the Change trolley or the change adapter can be used for several furnace vessels be so that only a single assembly with hydraulic cylinders is required is.
  • the change carriage or the change adapter then represents a compact unit, if, according to further features, the interchangeable adapter has extension arms in pairs, in each of which a hydraulic cylinder is held.
  • a precisely positioned transfer position is also achieved in that the base plate, on which the unit of contact electrodes rests, has further centering means, which when lowering through the change adapter of the change car into the Intervene in the wagon frame of the change car. This also affects the location of the Interchangeable adapter on the interchangeable car itself.
  • the positioning between the base plate and the interchangeable adapter is advantageous thereby precisely stipulated that on the change adapter of the change car Centering means for receiving means corresponding in the base plate of the unit are provided, which form a releasable connection in the closed position.
  • a spent electrode unit 3 After its furnace journey and after cleaning with a cleaning hammer around the electrodes (anode) cleaned from the refractory masonry 4 and then the electrical Connections, coolant and thermocouple connections disconnected.
  • FIGS. 5 to 8 the installation of a new unit 3 of electrodes shown.
  • the base plate 10 is part of the unit 3 with the electrodes. After that Connecting bolts 11 between the bottom of the vessel 1a and the base plate 10 solved (Fig. 4). This can be followed by the one connected to the hydraulic cylinders 6 Interchangeable adapter 7 due to its own weight and the weight of the rest of the unit 3 can be lowered with the electrodes controlled by the piston rods 6a. At the Lowering the change adapter 7 is already centered on the change carriage 5. Then the coupling device 8 on the piston rod 6a from the Counter clutch 1b released and the hydraulic cylinders 6 retracted. Then will the change car 5 moved away with the used unit 3.
  • the change carriage 5 is positioned centrally under the Vessel 1 with a new unit 3 of the electrodes.
  • the piston rods 6a extended and the coupling device 8 on the piston rod 6a is in each case connected to the associated mating coupling 1b on the vessel bottom 1a and locked (Fig. 6).
  • the base plate 10 and the interchangeable adapter 7 are on the interchangeable adapter 7 located centering means 7b, which in the corresponding receiving means Intervene 10a, centered.
  • the base plate 10 becomes the vessel 1 through the centering means 7b and by the coupling device 8 on the piston rods 6a in connection with the corresponding receiving means 10a automatically centered.
  • Unit 3 is lifted into the vessel 1.
  • the unit 3 is then with the bottom of the vessel 1a screwed by means of the connecting bolts 11.
  • the weight of the unit is 3 on the connection over.
  • the base plate 10, on which the unit 3 of contact electrodes rests, can be further Centering means 12 which, when lowered by the interchangeable adapter 7 of the Change car 5 dips into the car frame 5a of the change car 5.

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)
EP01936398A 2000-06-03 2001-05-26 Verfahren und einrichtung zum wechseln der elektroden an einem elektrisch betriebenen metallurgischen gefäss, insbesondere an einem lichtbogenofen Expired - Lifetime EP1287723B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10027755 2000-06-03
DE10027755A DE10027755A1 (de) 2000-06-03 2000-06-03 Verfahren und Einrichtung zum Wechseln der Elektroden an einem elektrisch betriebenen metallurgischen Gefäß, insbesondere an einem Lichtbogenofen
PCT/EP2001/006027 WO2001095672A1 (de) 2000-06-03 2001-05-26 Verfahren und einrichtung zum wechseln der elektroden an einem elektrisch betriebenen metallurgischen gefäss, insbesondere an einem lichtbogenofen

Publications (2)

Publication Number Publication Date
EP1287723A1 EP1287723A1 (de) 2003-03-05
EP1287723B1 true EP1287723B1 (de) 2004-06-30

Family

ID=7644722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01936398A Expired - Lifetime EP1287723B1 (de) 2000-06-03 2001-05-26 Verfahren und einrichtung zum wechseln der elektroden an einem elektrisch betriebenen metallurgischen gefäss, insbesondere an einem lichtbogenofen

Country Status (6)

Country Link
EP (1) EP1287723B1 (zh)
AT (1) ATE270489T1 (zh)
DE (2) DE10027755A1 (zh)
EG (1) EG22981A (zh)
TW (1) TW524029B (zh)
WO (1) WO2001095672A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106565073A (zh) * 2016-10-31 2017-04-19 彩虹（合肥）液晶玻璃有限公司 玻璃基板池炉电极推进及池壁砖更换装置
DE102011075003C5 (de) * 2011-04-29 2017-06-01 Primetals Technologies Germany Gmbh Elektroschmelzofen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106714360B (zh) * 2017-01-10 2020-03-06 中国工程物理研究院材料研究所 一种高温气氛压力烧结炉电极常见绝缘故障的维修方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5177763A (en) * 1990-03-28 1993-01-05 Kawasaki Steel Corporation Furnace bottom structure of direct current electric furnace
JPH0711390B2 (ja) * 1990-03-28 1995-02-08 川崎製鉄株式会社 直流電気炉の炉底電極交換装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075003C5 (de) * 2011-04-29 2017-06-01 Primetals Technologies Germany Gmbh Elektroschmelzofen
CN106565073A (zh) * 2016-10-31 2017-04-19 彩虹（合肥）液晶玻璃有限公司 玻璃基板池炉电极推进及池壁砖更换装置

Also Published As

Publication number Publication date
TW524029B (en) 2003-03-11
EP1287723A1 (de) 2003-03-05
ATE270489T1 (de) 2004-07-15
EG22981A (en) 2003-12-31
WO2001095672A1 (de) 2001-12-13
DE50102750D1 (de) 2004-08-05
DE10027755A1 (de) 2001-12-06

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