EP0405700B1 - Nachsetzvorrichtung für Elektroden - Google Patents

Nachsetzvorrichtung für Elektroden Download PDF

Info

Publication number
EP0405700B1
EP0405700B1 EP90250149A EP90250149A EP0405700B1 EP 0405700 B1 EP0405700 B1 EP 0405700B1 EP 90250149 A EP90250149 A EP 90250149A EP 90250149 A EP90250149 A EP 90250149A EP 0405700 B1 EP0405700 B1 EP 0405700B1
Authority
EP
European Patent Office
Prior art keywords
electrode
tube
slipping device
elements
frame
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
EP90250149A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0405700A2 (de
EP0405700A3 (en
Inventor
Luciano Ambrosi
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT90250149T priority Critical patent/ATE98083T1/de
Publication of EP0405700A2 publication Critical patent/EP0405700A2/de
Publication of EP0405700A3 publication Critical patent/EP0405700A3/de
Application granted granted Critical
Publication of EP0405700B1 publication Critical patent/EP0405700B1/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 repositioning device for electrodes with a pressing device consisting of a one-piece, ring-shaped hose filled with a pressure medium, which is arranged between clamping elements, which are arranged radially around the electrode, and a framework.
  • a repositioning device in which clamping elements are pressed onto the outer electrode sleeve with the aid of a pressure medium drive.
  • the heart of the pressure medium drive is a one-piece, annular hose that can be filled with pressure medium.
  • the increase in volume of the tube caused by pressure increase leads to the required contact pressure, which fixes the electrode vertically and horizontally.
  • the electrodes often have a weight of up to 50 t in practice, high forces arise which have to be compensated for by the contact material.
  • the weight of the electrode creates strong tensions.
  • the hose is subjected to severe material stresses, caused by strong tensile stresses. On top of that, the hose material can be further stressed by deformations and edge crushing.
  • the object of the invention is to provide a repositioning device which, with simple design means, ensures that the electrodes are held securely and increases the service life of the pressure hose material.
  • clamping elements have holding and guide brackets which are horizontally slidably mounted on the scaffolding, and in that supporting elements are provided on the clamping elements which partially rest on the hose filled with pressure medium.
  • the vertical weight forces and the horizontal contact forces are considered separately.
  • the proportion of the stresses that arise from the vertical weight forces is transferred directly to the scaffolding via the holding bracket.
  • the hose material is only loaded by the horizontal contact forces. Due to the length ratio of the hose edges from 5: 1 to 10: 1, the hose is adapted to this ratio of forces. This leads to a strong relief of the pressure hose material.
  • a second task of the holding bracket is to prevent the clamping elements from sliding off in an uncontrolled manner when the pressure in the hose is reduced.
  • the guide console which does not have to transmit any forces, serves to protect the pressing device and ensures even pressure conditions.
  • the pressure hose is enclosed by the frame with its rounded lugs and the support elements. They only allow a hose expansion in the direction of the electrode. Because the support elements are slidably supported on the lugs and overlap with these, the shape of the hose is retained even under pressure when the clamping elements are displaced. This prevents uncontrolled kinking of the hose.
  • the edge-free, rounded shapes of the support elements prevent the pressure hose from touching sharp component edges.
  • the radius of the support elements and lugs is adapted to the thickness of the hose. All of these measures can protect the hose material from fatigue and also from cracks.
  • FIG. 1 shows a repositioning device for electrodes 10.
  • a pressing device 30 is mounted between the clamping elements 20 and the frame 40.
  • the pressure device 30, consisting of a pressure hose 31, is provided with pressure medium by a pressure generating station 33 via a feed line 32.
  • the frame 40 has lugs 41 which point inwards, are rounded on the hose side and bear against the pressure hose 31.
  • the clamping elements 20 are mounted radially around the electrode 10 and are divided into segments 21 and closing parts 25.
  • the segments 21 have holding brackets 22 and guide brackets 23.
  • a holding bracket 22 and a guide bracket 23 are each connected to a segment 21.
  • the surfaces of the brackets 22 rest on the lugs 41 of the frame 40 and are horizontally slidably mounted.
  • support elements 24 are attached to segment 21.
  • the support elements 24 consist of rounded bleaches which abut the pressure hose 31. They are slidably supported on the lugs 41 and overlap with these.
  • the support element 24 is fastened to the segment 21 by a welded connection.
  • the wear parts 25 are located between the electrode 10 and the segments 21. They are positively attached to the segments 21 by the ends of the wear parts 25 being bent over the segment edges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Clamps And Clips (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Hybrid Cells (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Ceramic Capacitors (AREA)
  • Discharge Heating (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Led Devices (AREA)
EP90250149A 1989-06-26 1990-06-08 Nachsetzvorrichtung für Elektroden Expired - Lifetime EP0405700B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90250149T ATE98083T1 (de) 1989-06-26 1990-06-08 Nachsetzvorrichtung fuer elektroden.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921238 1989-06-26
DE3921238A DE3921238A1 (de) 1989-06-26 1989-06-26 Nachsetzvorrichtung fuer elektroden

Publications (3)

Publication Number Publication Date
EP0405700A2 EP0405700A2 (de) 1991-01-02
EP0405700A3 EP0405700A3 (en) 1992-04-15
EP0405700B1 true EP0405700B1 (de) 1993-12-01

Family

ID=6383813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90250149A Expired - Lifetime EP0405700B1 (de) 1989-06-26 1990-06-08 Nachsetzvorrichtung für Elektroden

Country Status (8)

Country Link
US (1) US5056104A (enExample)
EP (1) EP0405700B1 (enExample)
AT (1) ATE98083T1 (enExample)
BR (1) BR9002998A (enExample)
CA (1) CA2019747A1 (enExample)
DE (2) DE3921238A1 (enExample)
ES (1) ES2046683T3 (enExample)
ZA (1) ZA903962B (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3150856B2 (ja) * 1994-10-12 2001-03-26 株式会社リコー 画像処理方法
US5774802A (en) 1996-04-10 1998-06-30 Motorola Inc. Apparatus and method for billing in a wireless communication system
US6377605B1 (en) * 2001-03-02 2002-04-23 Hatch Associates Ltd. Electrode seal for arc furnace
FI128018B (en) 2013-12-20 2019-08-15 9282 3087 Quebec Dba Tmc Canada Metallurgical oven

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673227A (en) * 1951-02-15 1954-03-23 Elektrokemisk As Electrode holder with fluid control
DE1165783B (de) * 1954-01-11 1964-03-19 Demag Elektrometallurgie Gmbh Elektrodenhaltevorrichtung
US2778865A (en) * 1956-01-09 1957-01-22 Elektrokemisk As Suspension mechanism for continuous type electrodes and method of operation
US2921108A (en) * 1957-05-11 1960-01-12 Demag Elektrometallurgie Gmbh Furnace electrode holding means
US2884475A (en) * 1957-07-12 1959-04-28 Elektrokemisk As Clamp members for supporting electrodes
FR2136965A1 (en) * 1971-05-10 1972-12-29 Zinkovsky Viktor Electrode holder - that can vertically adjust industrial furnace electrodes without damage to them by friction
US3950601A (en) * 1973-04-02 1976-04-13 Alexandr Nikolaevich Popov Electric furnace
US3898364A (en) * 1974-09-05 1975-08-05 Stanford A Hardin Combined suspension device for holding, contacting, slipping and torquing electric furnace electrodes
FR2363958A1 (fr) * 1976-09-07 1978-03-31 Bozel Electrometallurgie Perfectionnements apportes au dispositif de montage d'une plaque de contact pour une electrode de four electrique
US4154974A (en) * 1977-09-16 1979-05-15 Lectromelt Corporation Clamp for arc furnace electrode
ZA786513B (en) * 1977-12-05 1980-07-30 Elkem Spigerverket As Arrangement for gas-tight insertion of electrodes in covered electrical smelting furnaces
FR2466168A1 (fr) * 1979-09-24 1981-03-27 Roche Maurice Perfectionnement aux dispositifs d'amenee de courant electrique a, par exemple, une electrode de four electrometallurgique
GB2087699B (en) * 1980-11-17 1984-07-18 Leybold Heraeus Gmbh & Co Kg Graphite electrode for use in an electric furnace
ATE14816T1 (de) * 1981-03-24 1985-08-15 Krupp Gmbh Hochstromleitungssystem fuer elektrooefen.
AT388444B (de) * 1984-09-18 1989-06-26 Voest Alpine Ag Elektroofen

Also Published As

Publication number Publication date
CA2019747A1 (en) 1990-12-26
ZA903962B (en) 1991-03-27
ATE98083T1 (de) 1993-12-15
BR9002998A (pt) 1991-08-20
US5056104A (en) 1991-10-08
EP0405700A2 (de) 1991-01-02
DE3921238C2 (enExample) 1991-11-07
EP0405700A3 (en) 1992-04-15
ES2046683T3 (es) 1994-02-01
DE3921238A1 (de) 1991-01-10
DE59003660D1 (de) 1994-01-13

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