EP0653146A1 - Electrodentragvorrichtung. - Google Patents
Electrodentragvorrichtung.Info
- Publication number
- EP0653146A1 EP0653146A1 EP93915665A EP93915665A EP0653146A1 EP 0653146 A1 EP0653146 A1 EP 0653146A1 EP 93915665 A EP93915665 A EP 93915665A EP 93915665 A EP93915665 A EP 93915665A EP 0653146 A1 EP0653146 A1 EP 0653146A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- electrode
- support arm
- furnace system
- carrying sleeve
- 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
Links
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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
-
- 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
- H05B7/11—Arrangements for conducting current to the electrode terminals
Definitions
- the invention relates to an electrode support device for a metallurgical vessel operated with electric current, consisting of a support column and a support arm separated from it by insulation, which has two coaxially guided sleeves, one sleeve consisting of material which conducts electric current, and on the latter An electrode can be fastened at the head end and is connected to a power supply system via the current-conducting sleeve and flexible feed line.
- the current conductor consists of a sleeve surrounding the electrode arm made of a material of good conductivity and the electrode support arm including the current conductor is attached to a guide column and is electrically separated from it by insulating plates.
- the live parts of these AC ovens are disadvantageously exposed to the aggressive environment.
- the aim of the invention is to provide, with simple means, a low-maintenance electrode support device in which the current supply to a direct current heating device is improved and in particular the arc is stabilized and the flicker problem is reduced while the inductance of the direct current choke is reduced and its size is reduced.
- the main circuit of a furnace operated with direct current consists of the main components: converter transformer, rectifier, direct current choke, high current supply and electrodes.
- part of the high-current lead is moved into the interior of the tubular support arm.
- the metallic support arm acts as a throttle. This makes it possible to reduce the necessary inductance of the DC choke arranged in the main circuit and thus its size, or to completely replace it in special applications.
- the current-carrying sleeve can be designed as a current tube separated from the metallic support arm by insulation.
- the sleeve is arranged as an inner plating for the tubular or square tubular support arm.
- the service life of the current-carrying parts is increased by the protected position and also by the possibility of cooling.
- Fig. 1 shows an electrode support device with power supply insulated from the support arm
- Fig. 2 shows an embodiment of the current-carrying sleeve as the inner plating of the support arm.
- FIGS 1 and 2 show a furnace 10 with a vessel jacket 11, in which a lining 12 is arranged.
- a bottom electrode 35 is provided in the bottom of the furnace vessel.
- a high-current cable 36 leads to this bottom electrode 35, which is switched as an anode.
- the current-carrying sleeve 32 is connected to a cooling device 40, not shown, which has a cooling water inlet 41 and a cooling water outlet 42.
- a cooling water inlet 43 and a cooling water outlet 44 are provided for the support arm.
- the pulse-guiding sleeve 32 is arranged in a support arm 21 with an electrode carrying device 20.
- An electrode holder 22 with a pressure plate 23 is provided at the head end of the support arm 21.
- the support arm 21 is separated by an insulation 24 from a guide column 25 which can be moved vertically to the steelworks platform via guide rollers 26 and a lifting device (not shown further).
- the current-carrying sleeve is designed as a current tube, which is electrically separated from the support arm 21 by insulation 24.
- the support arm 21 supported on the guide column 25, which has an insulation 24 at the head, can have the profile of a tube or a square tube or profiles not shown in any more detail.
- the current-carrying sleeve 32 is designed as an inner plating of the support arm 21.
- Cooling device 1 Cooling water inlet on the current-carrying sleeve 2 Cooling water outlet on the current-carrying sleeve 3 Cooling water outlet on the support arm 4 Cooling water outlet on the support arm
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Discharge Heating (AREA)
- Furnace Details (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Secondary Cells (AREA)
- Optical Head (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4225256A DE4225256C2 (de) | 1992-07-28 | 1992-07-28 | Mit Gleichstrom betriebene Ofenanlage |
DE4225256 | 1992-07-28 | ||
PCT/DE1993/000660 WO1994003028A1 (de) | 1992-07-28 | 1993-07-21 | Electrodentragvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0653146A1 true EP0653146A1 (de) | 1995-05-17 |
EP0653146B1 EP0653146B1 (de) | 1996-01-31 |
Family
ID=6464499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93915665A Expired - Lifetime EP0653146B1 (de) | 1992-07-28 | 1993-07-21 | Electrodentragvorrichtung |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0653146B1 (de) |
JP (1) | JP3170284B2 (de) |
AT (1) | ATE133830T1 (de) |
AU (1) | AU4558593A (de) |
DE (2) | DE4225256C2 (de) |
WO (1) | WO1994003028A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19621672A1 (de) * | 1996-05-30 | 1997-12-04 | Km Europa Metal Ag | Anordnung zur Übertragung der elektrischen Energie von einem Ofentransformator zu den Elektroden eines Drehstrom-Lichtbogenofens |
DE102006027648A1 (de) * | 2006-06-13 | 2007-12-20 | Arndt Dung | Wandungselemente für einen wassergekühlten, stromführenden Elektrodentragarm und aus solchen Wandungselementen bestehende Elektrodentragarme |
CN115433802B (zh) * | 2022-09-21 | 2024-01-26 | 马鞍山钢铁股份有限公司 | 一种lf炉电极存放装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE322850B (de) * | 1965-06-10 | 1970-04-20 | Asea Ab | |
US3686421A (en) * | 1971-08-30 | 1972-08-22 | Edgar Wunsche | Unitized electride holder and arm for electric arc furnace electrodes or the like |
-
1992
- 1992-07-28 DE DE4225256A patent/DE4225256C2/de not_active Expired - Fee Related
-
1993
- 1993-07-21 AU AU45585/93A patent/AU4558593A/en not_active Abandoned
- 1993-07-21 DE DE59301563T patent/DE59301563D1/de not_active Expired - Fee Related
- 1993-07-21 EP EP93915665A patent/EP0653146B1/de not_active Expired - Lifetime
- 1993-07-21 AT AT93915665T patent/ATE133830T1/de not_active IP Right Cessation
- 1993-07-21 JP JP50408494A patent/JP3170284B2/ja not_active Expired - Fee Related
- 1993-07-21 WO PCT/DE1993/000660 patent/WO1994003028A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9403028A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0653146B1 (de) | 1996-01-31 |
JPH07509094A (ja) | 1995-10-05 |
DE4225256A1 (de) | 1994-02-03 |
WO1994003028A1 (de) | 1994-02-03 |
JP3170284B2 (ja) | 2001-05-28 |
ATE133830T1 (de) | 1996-02-15 |
AU4558593A (en) | 1994-02-14 |
DE4225256C2 (de) | 1997-06-19 |
DE59301563D1 (de) | 1996-03-14 |
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