EP0127568A1 - Dispositif réfrigérant pour connexion à nipple d'électrodes de fours à arc - Google Patents
Dispositif réfrigérant pour connexion à nipple d'électrodes de fours à arc Download PDFInfo
- Publication number
- EP0127568A1 EP0127568A1 EP84730042A EP84730042A EP0127568A1 EP 0127568 A1 EP0127568 A1 EP 0127568A1 EP 84730042 A EP84730042 A EP 84730042A EP 84730042 A EP84730042 A EP 84730042A EP 0127568 A1 EP0127568 A1 EP 0127568A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nipple
- sleeve
- electrode section
- lower electrode
- cooling device
- 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
Images
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 main claim.
- a composite electrode is known, the upper section - which consists of steel - is cooled.
- This permanent section is connected to the graphite electrode section by means of a nipple, this 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, particularly in the area of nippling, box breaks often occur which damage the furnace operation very much.
- the construction according to the cited OS is unusable, in particular because the two electrode sections are connected by tensile force.
- a graphite electrode is known from DE-OS 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 in the interior of the double-walled current-carrying tube is not sufficient for cooling the device and the nipple.
- the object of the invention is to find 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.
- 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 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 pipe (compensator) 10 to compensate for the upward movement caused when the pipe 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 baffles 4 are arranged in the cooling bell 5 in order to intensify the cooling.
- the electrode section 9 is of double-walled design, the part receiving the cooling liquid being designated by 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)
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 |
---|---|---|---|
DE19833319389 DE3319389A1 (de) | 1983-05-26 | 1983-05-26 | Kuehlungsvorrichtung fuer elektrodenverbindungsnippel an lichtbogenoefen |
DE3319389 | 1983-05-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0127568A1 true EP0127568A1 (fr) | 1984-12-05 |
EP0127568B1 EP0127568B1 (fr) | 1989-03-15 |
Family
ID=6200103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84730042A Expired EP0127568B1 (fr) | 1983-05-26 | 1984-04-16 | Dispositif réfrigérant pour connexion à nipple d'électrodes de fours à arc |
Country Status (7)
Country | Link |
---|---|
US (1) | US4615036A (fr) |
EP (1) | EP0127568B1 (fr) |
JP (1) | JPS59226499A (fr) |
AT (1) | ATE41581T1 (fr) |
DE (1) | DE3319389A1 (fr) |
DK (1) | DK159037C (fr) |
ES (1) | ES532661A0 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4964114A (en) * | 1986-11-26 | 1990-10-16 | Mannesmann Ag | Electrode positioning mechanism |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US824153A (en) * | 1904-05-03 | 1906-06-26 | Willson Aluminum Company | Carbon-holder for electric furnaces. |
DE2739483A1 (de) * | 1976-09-01 | 1978-03-02 | Canada Steel Co | Zusammengesetzte elektrode fuer lichtbogenoefen |
DE3144926A1 (de) * | 1980-11-17 | 1982-06-09 | Leybold-Heraeus GmbH, 5000 Köln | Grafitelektrode fuer den einsatz in einen elektrodenhalter eines elektroofens |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
ATE22383T1 (de) * | 1980-12-02 | 1986-10-15 | Arc Tech Syst Ltd | Elektrode fuer lichtbogenschmelzoefen. |
DE3102776A1 (de) * | 1981-01-28 | 1982-08-26 | C. Conradty Nürnberg GmbH & Co KG, 8505 Röthenbach | Elektrode fuer lichtbogenoefen |
EP0061612B1 (fr) * | 1981-03-24 | 1985-08-07 | Fried. Krupp Gesellschaft mit beschränkter Haftung | Système de conducteurs pour courant intense pour fours électriques |
CA1199358A (fr) * | 1982-06-04 | 1986-01-14 | Robert W. Montgomery | Electrodes pour four electrique a arc |
US4451926A (en) * | 1982-08-03 | 1984-05-29 | Great Lakes Carbon Corporation | Composite electrode for arc furnace |
FR2534691A1 (fr) * | 1982-10-15 | 1984-04-20 | Clecim Sa | Dispositif de mesure de tension d'arc sur un four electrique |
-
1983
- 1983-05-26 DE DE19833319389 patent/DE3319389A1/de active Granted
-
1984
- 1984-04-05 JP JP59068341A patent/JPS59226499A/ja active Granted
- 1984-04-16 AT AT84730042T patent/ATE41581T1/de active
- 1984-04-16 EP EP84730042A patent/EP0127568B1/fr not_active Expired
- 1984-05-21 US US06/612,423 patent/US4615036A/en not_active Expired - Fee Related
- 1984-05-21 ES ES532661A patent/ES532661A0/es active Granted
- 1984-05-25 DK DK258184A patent/DK159037C/da not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US824153A (en) * | 1904-05-03 | 1906-06-26 | Willson Aluminum Company | Carbon-holder for electric furnaces. |
DE2739483A1 (de) * | 1976-09-01 | 1978-03-02 | Canada Steel Co | Zusammengesetzte elektrode fuer lichtbogenoefen |
DE3144926A1 (de) * | 1980-11-17 | 1982-06-09 | Leybold-Heraeus GmbH, 5000 Köln | Grafitelektrode fuer den einsatz in einen elektrodenhalter eines elektroofens |
Also Published As
Publication number | Publication date |
---|---|
DK159037C (da) | 1991-02-04 |
DE3319389C2 (fr) | 1987-03-05 |
DE3319389A1 (de) | 1984-11-29 |
DK258184A (da) | 1984-11-27 |
JPS59226499A (ja) | 1984-12-19 |
EP0127568B1 (fr) | 1989-03-15 |
ES8502830A1 (es) | 1985-01-16 |
ATE41581T1 (de) | 1989-04-15 |
DK258184D0 (da) | 1984-05-25 |
JPH0372192B2 (fr) | 1991-11-15 |
ES532661A0 (es) | 1985-01-16 |
US4615036A (en) | 1986-09-30 |
DK159037B (da) | 1990-08-20 |
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