• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to electrical engineering. The purpose of the invention is to simplify the removal of the bottom electrode by pushing it into the oven. In the hearth of the metal receiver 4, a bottom electrode 14 is installed, having a conical shape tapering in the direction of the internal volume, and the profile element 15 supplementing it, expands in the direction of the internal volume of the metal receiver. The lower end of the electrode 14 is enclosed by a contact sleeve 17 and is connected to it by a detachable connection 18. An opening 27 is made in the end wall of the sleeve. When the electrode 14 is removed, the collet connection 18 is released, and a force is applied to the electrode to expel. Thus, the bottom electrode 14, together with the surrounding element 15, is easily removed inside the metal receiver. 6 Il.
    公开号:SU1545951A3
    申请号:SU843764351
    申请日:1984-07-26
    公开日:1990-02-23
    发明作者:Бюлер Карл
    申请人:Ббц Браун Бовери Аг (Фирма)；
    IPC主号:
    专利说明:

    i IP1.CHOI 17 and is connected to it by a detachable connection 18. A hole 27 is made in the end wall of the sleeve. When the electrode 14 is dismounted, the collet connection 18 is released, an attachment to the electrode is applied to the electrode, and it is necessary for vygp. pvlnnn with nl, 1. Thus, the bottom electrode 14, together with the surrounding element 15, is easily removed inside the metal receiver. 6 Il.
    The invention relates to electrical engineering.
    The purpose of the invention is to simplify the removal of the bottom electrode by pushing it into the oven.
    FIG. 1 shows an electric oven with a bottom electrode, vertical section; in fig. 2 - bottom electrode, vertical section; in fig. 3 and 4 - the same options; in fig. 5 - double bottom electrode, vertical section; in fig. 6 - under the metal receiver of the furnace with a bottom electrode, vertical section.
    Electric arc furnace 1
    (Fig. 1) contains a metal receiver 2 and a furnace 3, the furnace metal receiver 2 consists of a hearth 4 of the metal receiver, a wall 5 of the metal receiver, a refractory lining 6 of the furnace hearth, as well as a refractory lining 7 of the wall of the metal receiver. Above the bathtub asplava is the carbon electrode 9 passing through the opening of the lid 3 of the furnace. A cooling cola 10 is installed to cool the electrode 9. The electrode 9 is held in the holder 11 of the electrode bracket 12, which is connected to an electrode control device (not shown); an electric arc 13 is formed between the electrode 9 and the bath 8.
    A hearth electrode 14 is installed in the hearth 4 of the metal receiver, surrounded by a profile element 15 supplementing it in the form of a refractory sleeve. The bottom electrode 14 has a conical shape tapering in the direction of the internal volume of the metal reservoir, which is such in the area from the hearth of the furnace metal receptacle to the bottom surface 16 of the furnace. The padding element 15 expands in the direction internally about the volume of the metal receptacle. The bottom electrode 14 is held under the base 4 of the metal receiver of the furnace with the help of cooled water, made in the form of a contact,
    15
    20
    25
    Jq ,, dd
    d $, Q
    55
    ki connecting part 17, which simultaneously serves to connect the electric current supply. The bottom electrode 14 is fastened to the end surface of the connecting piece 17 by means of a screw connection 18. The bottom electrode 14 is fitted conically with side walls to conical, expanding in the side of the furnace 4, the inner side surfaces of the contact sleeve, thereby creating a good electrical connection , and the heat transfer between the electrode 14 and the part 17. On the connecting part 17 are located the contact pads 19. The electrical supply cable 20 is connected to the contact pads 19 of the terminal of the clamping part 17 by means of a screw connection 21. The connecting part 17 is provided with cooling channels 22 as well as an inlet fitting
    23 cooling channels 22. Coolant (mostly water) is supplied through inlet fitting 23
    to the cooling channels 22. It flows through the cooling channels 22 of the mounting part 17 in the form of a spiral upward and thereby indirectly cools the bottom electrode 14. The coolant outlet connection of the connecting part 17 is at the same level as the input fitting 23. Retention of the bottom electrode 14 takes place with the aid of a fastening part consisting of a metal shielding cover.
    24 in the form of a truncated cone and vertical retaining beams 25. The bottom electrode 4 passes through the opening of the shielding cover 24,
    The connection piece 17 is fixed to the underside of the shield cap 24 through an electrically insulating intermediate layer 26.
    When disassembling the bottom electrode 14 is possible, only the screw connection 18 is released.
    ten
    15
    5154595
    From the internal volume of the metal reservoir, the end surface of the bottom electrode 14 is set, for example, a grinder (not shown) of the pressing device through the hole
    27 in the end surface of the connecting part 17, and a force is applied to the bottom electrode 14 together with the core element supplementing it. In this manner, the bottom electrode 14, together with the surrounding element 15, can easily be removed from the outside to the inside of the metal receptacle. Since, in contrast to the end surface of the bottom electrode 14 that faces the melt, the end face, to which the extruded die is attached, is 20
    accurately determined, then pressing out the bottom electrode 14 from the bottom 4 of the metal plate: furnace, can in any case be repeated with good reproducibility.
    The bottom electrode (Fig. 2) 14 with a diameter d is conically tapering in the hearth region of the metal reservoir towards the bottom surface 16 and has a diameter d − j there. The additional bottom electrode 14 of the element 15, which in the hearth zone of the furnace also has a diameter approximately equal to d ,, expands and has a diameter d4 on the bottom surface. Using the dashed line indicates that the element can also be cylindrical. The average diameter of the bottom electrode 14 is denoted by the letter dj and the total length of the bottom electrode 14 is indicated by the letter 1.
    The bottom electrode 14 (Fig. 3) has a cylindrical shape and is also surrounded by an additional element 15, which again expands in a direction
    50
    the internal volume of the metal receiver. Thus, it is greatly facilitated to press out the bottom electrode 14 from the hearth of the furnace metal receiver. The bottom electrode 14 is provided with a profile insert 28 of refractory material located in a funnel-shaped notch inside the bottom electrode 14, and the notch extends from the end surface of the bottom electrode 1 4 facing to the internal volume of the metal receiver, 4 axially to the hearth area 4 of the metal receiver of the furnace. Profile0
    five
    five
    0
    five
    five
    five
    0
    sixteen
    The insert 28 serves to reduce the cross section of the bottom electrode 14 in the direction of the internal volume of the metal receiver of the furnace, thereby reducing its power loss. In pod 4, the metal application of the furnace, the electrode 14 has a diameter d, decreasing due to the profile element 28 on the surface 16 of the furnace to a radial annular width d5. The electrode 14, together with its supplementing element 15, has a diameter dt on the surface 16 of the furnace. The average diameter is indicated by the letter d.
    The outer diameter of the bottom electrode (Fig. 4) expands in the direction of the internal volume of the metal receiver or remains unchanged (indicated by dashed lines). The bottom electrode 14 does not have an additional part, since the extrusion towards the internal volume of the metal receiver is also provided without it. However, the bottom electrode 14 is provided with a funnel-shaped profile insert 28, which serves to limit the power loss.
    The double hearth electrode 14 (Fig. 5) consists of an iron alloy part 29 and a copper part 30 facing the bottom surface of the furnace. Both parts 29 and 30 are interconnected, and pressing out the electrode 14 from the outside in the direction of the internal volume of the metal receiver is performed without additional measures. tiy.
    The mushroom metal 31 and slag 32 zones (Fig. 6), penetrating into the refractory lining of the hearth 4 of the furnace metal receiver, into the bottom electrode 14 and into the element 15 that supplements it, can be removed only with great difficulty. When using the proposed bottom electrode 14, the assignment of the furnace hearth 4 of the metal receiver is easy and can be carried out without prior extensive cleaning work. The bottom electrode 14 may have a cross section of both round and polygonal shape.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    An electric arc furnace for melting metal, preferably a direct current furnace, containing a lining and installed in the bottom
    barbell is a metal hearth. an electrode having a cross section diminishing to the inner surface of the bottom associated with the lower equestrian with a copper contact element, characterized in that, in order to simplify the removal of the bottom electrode by pushing it inside the furnace, the furnace is provided with a core element of refractory
    5459518
    the material covering the outside of the bottom electrode, complementing it in cross section at least to a section that remains unchanged, the contact element is designed as a sleeve covering the lower end of the electrode protruding beyond the bottom of the furnace and is connected with it by a detachable connection, and in the end wall of the sleeve
    hole is made.
    类似技术:
    公开号 | 公开日 | 专利标题
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    US4125737A|1978-11-14|Electric arc furnace hearth connection
    SU965370A4|1982-10-07|Current feeding device for arc furnace
    SU1360596A3|1987-12-15|Arrangement for supplying electric power
    US4564950A|1986-01-14|Guard arrangement for a bottom electrode of a direct-current arc furnace
    BE899449Q|1984-08-16|ELECTRIC ARC TRANSFERED.
    US4145562A|1979-03-20|DC Arc furnace melt electrode
    RU95122163A|1997-11-27|FUSION DEVICE WITH MELTED METAL, IN PARTICULAR IRON, INSTALLATIONS FOR CASTING, AND INSTALLATION FOR CASTING OF METAL PRODUCTS CONTAINING THIS FOOD DEVICE
    US4730338A|1988-03-08|Coupling construction for an electric furnace
    JP2719938B2|1998-02-25|Furnace wall electrode of electric furnace for metallurgy
    US4564951A|1986-01-14|Cooling arrangement of a bottom electrode for a direct-current arc furnace
    RU2061998C1|1996-06-10|Bottom electrode of dc metallurgical furnace
    US3729307A|1973-04-24|Method and apparatus for electroslag remelting of metals,particularly steel
    JP2994475B2|1999-12-27|Metallurgical vessel with at least one electrode penetrating the wall
    US4446561A|1984-05-01|Axially movable electrode holder for use in electric steel production
    US4204082A|1980-05-20|DC Arc furnace having starting electrode
    US4122293A|1978-10-24|Feed system for plasma-arc furnace
    US3358067A|1967-12-12|Electric melt vessel
    CA1208006A|1986-07-22|Method of and apparatus for tapping a furnacecontaining a melt to be tapped
    US4027092A|1977-05-31|Electrode holder of a multielectrode furnace
    US3383450A|1968-05-14|Electric melt vessel having means for reducing cold spot areas therein
    JPS63206438A|1988-08-25|Electrode for electroslag refining
    JPH11219781A|1999-08-10|Cooling structure for furnace-bottom electrode of direct current arc furnace
    同族专利:
    公开号 | 公开日
    US4566108A|1986-01-21|
    JPS60111878A|1985-06-18|
    EP0133925A1|1985-03-13|
    CH664059A5|1988-01-29|
    IN161092B|1987-10-03|
    JPH049992B2|1992-02-21|
    BR8403723A|1985-07-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR421292A|1910-10-10|1911-02-18|Elektrostahlanlagen Mit Beschr|Electric furnace for metallurgy with large and spacious laboratory and heating by flame or electric arc acting on the surface of the bath|
    FR518356A|1913-12-13|1921-05-24|Fried Krup Ag|Cooling hearth electrodes for electric melting furnaces|
    DE426584C|1925-04-22|1926-03-17|Ruetgerswerke A G Abteilung Pl|Metallic socket for the electrodes of electric ovens|
    DE661185C|1936-02-01|1938-06-13|Bernhard Berghaus|Method and device for the production of metallic coatings from metals vaporized by means of an electric arc in a chamber|
    FR1425084A|1965-02-22|1966-01-14|Morgan Refractories Ltd|electrode for glass furnace|
    US3717713A|1971-02-18|1973-02-20|M Schlienger|Arc furnace crucible|
    US3708599A|1971-04-22|1973-01-02|Thermal Transfer Corp|High temperature apparatus|
    SE396226B|1974-09-20|1977-09-12|Asea Ab|KIT AND DEVICE FOR TREATMENT OF A METAL MELT|
    SE419929B|1974-11-25|1981-08-31|Asea Ab|MELT CONTACT ELECTROD|
    SE7605217L|1976-05-07|1977-11-08|Asea Ab|MELT CONTACT ELECTROD|
    DE2806270A1|1977-02-23|1978-08-24|Asea Ab|FUSION CONTACT ELECTRODE|
    DE3106741C2|1981-02-24|1983-06-16|M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen|Contact electrode arrangement for arc or resistance melting furnace|DE3461979D1|1983-07-28|1987-02-12|Bbc Brown Boveri & Cie|Cooling arrangement of a bottom electrode of a direct current arc furnace|
    AT25179T|1983-07-28|1987-02-15|Bbc Brown Boveri & Cie|PROTECTIVE ARRANGEMENT FOR A FLOOR ELECTRODE OF A DC ARC FURNACE.|
    FR2571202B1|1984-10-01|1987-01-09|Usinor|ELECTRODE STRUCTURE FOR MOLTEN METAL BATH|
    DE3515438C2|1985-04-29|1991-05-23|Man Gutehoffnungshuette Ag, 4200 Oberhausen, De|
    DE3535692A1|1985-10-05|1987-04-09|Gutehoffnungshuette Man|CONTACT ELECTRODE ARRANGEMENT FOR DC ARC OR RESISTANCE MELTING OVENS|
    DE3535690A1|1985-10-05|1987-04-09|Gutehoffnungshuette Man|CONTACT ELECTRODE ARRANGEMENT FOR DC ARC OR RESISTANCE MELTING STOVE|
    DE3701678A1|1987-01-22|1988-08-04|Gutehoffnungshuette Man|METALLURGICAL TANK, ESPECIALLY ELECTRIC OVEN WITH ONE OR MORE FLOOR ELECTRODES|
    US4947405A|1989-05-24|1990-08-07|Daidotokushijo Kabushikikaisha|DC arc furnace|
    FR2652890B1|1989-10-11|1995-01-20|Siderurgie Fse Inst Rech|ELECTRICAL CONNECTION DEVICE FOR PLACING ON THE WALL OF A METALLURGICAL CONTAINER IN CONTACT WITH A MOLTEN METAL.|
    JPH03233288A|1990-02-08|1991-10-17|Meiken Kogyo Kk|Bottom electrode of electric furnace|
    CH680086A5|1990-05-09|1992-06-15|Asea Brown Boveri|
    US5151918A|1990-08-28|1992-09-29|Argent Ronald D|Electrode blocks and block assemblies|
    DE4138724C2|1991-11-19|1997-05-28|Mannesmann Ag|Method and device for repairing an electrode|
    FR2711233B1|1993-10-15|1995-12-29|Usinor Sacilor|Metallurgical vessel comprising a sole electrode.|
    ATA20694A|1994-02-03|2000-12-15|Voest Alpine Ind Anlagen|FLOOR ANODE FOR A METALLURGICAL VESSEL|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH4132/83A|CH664059A5|1983-07-28|1983-07-28|ELECTRIC OVEN, ESPECIALLY DIRECT ARC FURNACE.|
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