EP1714528B1 - Contact block arranged at the free end of an electrode support arm forming a component of an electric oven - Google Patents
Contact block arranged at the free end of an electrode support arm forming a component of an electric oven Download PDFInfo
- Publication number
- EP1714528B1 EP1714528B1 EP05701182A EP05701182A EP1714528B1 EP 1714528 B1 EP1714528 B1 EP 1714528B1 EP 05701182 A EP05701182 A EP 05701182A EP 05701182 A EP05701182 A EP 05701182A EP 1714528 B1 EP1714528 B1 EP 1714528B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact jaw
- contact
- electrode
- support arm
- passage
- 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.)
- Active
Links
- 230000000694 effects Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 2
- 230000006735 deficit Effects 0.000 abstract description 4
- 230000003628 erosive effect Effects 0.000 abstract 2
- 230000004927 fusion Effects 0.000 abstract 1
- 230000007704 transition Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 241001295925 Gegenes Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
- F27D11/10—Disposition of electrodes
Definitions
- the invention relates to one of the at the free end of a component of an electric furnace forming electrode support arm located interchangeable contact jaw for contact means by means of a leading on Elektrodentragarm tensioning contact against the interchangeable interchangeable electrode.
- US 4700356 describes a contact plate located on an electrode arm.
- the invention has the object to develop a solution based on a on the one hand large area against the component of the electrode support arm forming contact plate and on the other hand over a large area against the coming into contact with the electrode coming to the plant the impairment of the current transition from the contact plate on the attached thereto, interacting with the electrode contact jaw fixes, at least reduces.
- Burning occurring during operation is continuously carried out by the passage formed in the contact jaw and leaving the support arm. To a noticeable impairment of the current transfer from the component the electrode support arm forming contact plates on the interacting with the electrode contact jaw it is no longer.
- 11 denotes the front side region of the electrode support arm.
- the electrode support arm consists of a box profile which is continuous in the middle (111).
- the contact jaw 12 is attached, via Screwed connections 121 between the contact jaw 12 and the component of the electrode support arm forming contact plates 112.
- the replaceable electrode 21 is brought against the contact jaw 12 by means of a not shown, leading to the support arm 11 clamping contact.
- the contact surfaces of the contact jaw 12 are designated 122.
- 123, the contact jaw 12 passing through cooling channels are called.
- the contact jaw 12 is centrally continuous (124) formed in the support arm 11 passage 111th
- a bevel of the vertical abutment surfaces 126 of the contact jaw 12 against the Tragarmuttonutton 112 in the region of the passage 124 in the contact jaw 12 is provided, in the illustrated case on the one hand ( 126 ') incident to the passage 124 and on the other hand, sloping (126 ") to the circumference 127 of the contact jaw 12.
- An alternative would be a chamfering from the periphery of the contact jaw to the passage in the contact jaw.
- a tongue and groove connection can be provided which prevents relative movements between the contact jaw 12 and the support arm 11, ie its contact plates 112. This possibility is indicated in FIG. After that are Tragarm nurse formed in the contact surface 126 of the contact jaw 12 grooves 128, in which overlap with protrusion springs 129, the supernatant inserted at the support arm 11 attached contact jaw 12 in the front of the support arm 11 located contact plates 112 formed, corresponding grooves.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
- Resistance Heating (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Bag Frames (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Abstract
Description
Die Erfindung betrifft eine der am freien Ende eines Bestandteil eines Elektroofens bildenden Elektrodentragarms befindlichen Kontaktplatte auswechselbar zuzuordnende Kontaktbacke für die mittels eines sich am Elektrodentragarm führenden Spannbügels kontaktbewirkend dagegen zur Anlage bringbare auswechselbare Elektrode.
Während des laufenden Schmelzbetriebes kommt es hervorgerufen durch von den aufsteigenden Gasen mitgerissenen Abbrand zu Ablagerungen zwischen der Bestandteil des Elektrodentragarms bildenden Kontaktplatte und der daran lösbar angesetzten Kontaktbacke, was zu einer fortschreitenden Beeinträchtigung des Stromüberganges von der Kontaktplatte auf die Kontaktbacke führt. Der Effekt wird dann auch noch dadurch verstärkt, dass ein satter Sitz der Kontaktbacke an der Kontaktplatte sich über die Kontaktbacke mit der Kontaktplatte lösbar zusammenfassenden Schraubverbindungen nicht herbeiführen lässt, woraus die Möglichkeit einer begrenzten Verlagerung der Kontaktbacke gegenüber der Kontaktplatte während des laufenden Betriebes resultiert, was nicht etwa zum Abtragen von Ablagerungen zwischen Kontaktbacke und Kontaktplatte führt, sondern zu sich verstärkenden Ablagerungen durch Elektrodenabrieb mit der Folge der fortschreitenden Beeinträchtigung des Stromüberganges von der Kontaktplatte auf die Kontaktbacke.During the current melting operation, it is caused by deposits entrained by the rising gases to deposits between the component of the electrode support arm forming contact plate and the contact jaw detachably attached thereto, resulting in a progressive deterioration of the current transition from the contact plate to the contact jaw. The effect is then also reinforced by the fact that a snug fit of the contact jaw on the contact plate on the contact jaw with the contact plate releasably summarizing screw connections not which gives rise to the possibility of a limited displacement of the contact jaw against the contact plate during operation, which does not lead to the removal of deposits between the contact jaw and contact plate, but to reinforcing deposits by electrode abrasion with the result of progressive impairment of the current transition of the Contact plate on the contact jaw.
Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde eine Lösung zu entwickeln, die basierend auf einer einerseits großflächig gegen die Bestandteil des Elektrodentragarms bildende Kontaktplatte und andererseits großflächig gegen die mit ihr in Wechselwirkung tretende Elektrode zur Anlage kommend die Beeinträchtigung des Stromüberganges von der Kontaktplatte auf die daran angesetzte, mit der Elektrode in Wechselwirkung tretende Kontaktbacke behebt, zumindest mindert.Against this background, the invention has the object to develop a solution based on a on the one hand large area against the component of the electrode support arm forming contact plate and on the other hand over a large area against the coming into contact with the electrode coming to the plant the impairment of the current transition from the contact plate on the attached thereto, interacting with the electrode contact jaw fixes, at least reduces.
Die Aufgabe wird mit einer am freien Ende eines Bestandteil eines Elektroofens bildenden Elektrodentragarms auswechselbar angeordnete Kontaktbacke für die mittels eines sich am Elektrodentragarm führenden Spannbügels kontaktbewirkend dagegen zur Anlage bringbare auswechselbare Elektrode gelöst, die dadurch gekennzeichnet ist, dass
- die gegen einen Teilbereich der Elektrode flächig zur Anlage bringbare Kontaktbacke mittig von einem zum Tragarm hin auslaufenden Durchgang versehen ist, der im Tragarm seine Fortsetzung findet.
- the contact jaw, which can be brought into abutment against a partial region of the electrode, is provided centrally by a passage which leads to the support arm and which continuation takes place in the support arm.
Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen 2 bis 9.Embodiments of the invention will become apparent from the dependent claims 2 to 9.
Während des laufenden Betriebs anfallender Abbrand wird durch den in der Kontaktbacke ausgebildeten, zum Tragarm hin auslaufenden Durchgang kontinuierlich ausgetragen. Zu einer merklichen Beeinträchtigung des Stromübergangs von den Bestandteil des Elektrodentragarms bildenden Kontaktplatten auf die mit der Elektrode in Wechselwirkung tretende Kontaktbacke kommt es nicht mehr.Burning occurring during operation is continuously carried out by the passage formed in the contact jaw and leaving the support arm. To a noticeable impairment of the current transfer from the component the electrode support arm forming contact plates on the interacting with the electrode contact jaw it is no longer.
Zur Unterbindung, zumindest zur Einschränkung der Ausbildung von auf Elektrodenabrieb zurückzuführenden Ablagerungen zwischen Kontaktplatte und Kontaktbacke trägt bei, wenn den bislang in Kauf zunehmenden Relativbewegungen zwischen der mit der Kontaktplatte über Schraubverbindungen lösbar zusammengefassten Kontaktbacke während der sich einstellenden Relativbewegungen zwischen Kontaktbacke und Kontaktplatte entgegengewirkt wird. Das lässt sich in Ausgestaltung der Erfindung in der Weise realisieren, dass die Kontaktbacke an der Rückseite beidseits mit sich vorzugsweise in der Vertikalen erstreckenden Rücksprüngen versehen wird, die Federn aufnehmen, deren Überstände sich in entsprechender, in der Kontaktplatte befindliche Rücksprünge diese Rücksprünge ausfüllend einfügen.To prevent, at least to limit the formation of attributable to electrode abrasion deposits between the contact plate and contact jaw contributes when counteracting the hitherto buying relative movements between the contact plate with screw detachably combined contact jaw counteracting during the adjusting relative movements between the contact jaw and contact plate. This can be realized in an embodiment of the invention in such a way that the contact jaw is provided on the back on both sides with preferably extending in the vertical recesses, record the springs whose supernatants insert in corresponding, located in the contact plate recesses filling these recesses.
In der Zeichnung ist die Erfindung anhand eines in ganz schematischer Weise wiedergegebenen Ausführungsbeispiels weitergehend erläutert. Dargestellt ist in
- Figur 1
- ein Horizontal-Schnitt durch das Ensemble im Bereich der Einspannung der Elektrode, abgebrochen,
- Figur 2
- eine Ansicht der Bestandteil des Ensembles bildenden Kontaktbacke von ihrer tragarmseitigen Anlageseite her (Pfeil II in Figur 1).
- FIG. 1
- a horizontal section through the ensemble in the region of the clamping of the electrode, aborted,
- FIG. 2
- a view of the component of the ensemble forming contact jaw forth from their Tragarmseitigen system side (arrow II in Figure 1).
In der Darstellung ist mit 11 der Stirnseitenbereich des Elektrodentragarms bezeichnet. Der Elektrodentragarm besteht aus einem Kastenprofil, das mittig durchgängig ist (111). Vor Kopf des Elektrodentragarms 11 ist die Kontaktbacke 12 angesetzt, und zwar über Schraubverbindungen 121 zwischen Kontaktbacke 12 und den Bestandteil des Elektrodentragarms bildenden Kontaktplatten 112. Die auswechselbare Elektrode 21 wird über einen nicht dargestellten, sich am Tragarm 11 führenden Spannbügel kontaktgebend gegen die Kontaktbacke 12 zur Anlage gebracht. Die kontaktgebenden Flächen der Kontaktbacke 12 sind mit 122 bezeichnet. Mit 123 sind die Kontaktbacke 12 durchsetzende Kühlkanäle bezeichnet. Die Kontaktbacke 12 ist mittig durchgängig (124) zum im Tragarm 11 ausgebildeten Durchgang 111.In the illustration, 11 denotes the front side region of the electrode support arm. The electrode support arm consists of a box profile which is continuous in the middle (111). Before the head of the
Zwecks Vermeidung von Ablagerungen zwischen den Anlageflächen 126 der Kontaktbacke 12 gegenüber dem Tragarmkontakten (112) anfallenden Abbrandes ist erfindungsgemäß eine Abschrägung der vertikalen Anlageflächen 126 der Kontaktbacke 12 gegenüber den Tragarmkontakten 112 im Bereich des Durchgangs 124 in der Kontaktbacke 12 vorgesehen, im dargestellten Fall einerseits (126') einfallend zum Durchgang
124 und andererseits abfallend (126") zum Umfang 127 der Kontaktbacke 12. Eine Alternative wäre eine vom Umfang der Kontaktbacke zum Durchgang in der Kontaktbacke hin einfallende Abschrägung.In order to avoid deposits between the
124 and on the other hand, sloping (126 ") to the
Dank dieser Abschrägungen kommt es nicht mehr zu den beeinträchtigenden Ablagerungen zwischen Kontaktbacke und Tragarmkontakten, da anfallender Abbrand vollständig durch den Tragarm (Pfeil A in Figur 1) abgeführt wird, gegebenenfalls dann auch nach außen hin (Pfeil A' in Figur 1). Dazu trägt der sich im Kontaktbackendurchgang ausbildende, sich in den Tragarmdurchgang fortsetzende Sog während des Schmelzbetriebes bei.Thanks to these chamfers, it no longer comes to the impairing deposits between the contact jaw and Tragarmkontakten because accumulating burn is completely dissipated by the support arm (arrow A in Figure 1), if necessary then also outwardly (arrow A 'in Figure 1). Contributes to the training in contact jaw passage, continuing in the Tragarmdurchgang suction during the melting operation at.
In Ausgestaltung kann ergänzend zur Schraubverbindung 121 zwischen Kontaktbacke 12 und Elektrodentragarm 11 eine Nut-Feder-Verbindung vorgesehen sein, die Relativbewegungen zwischen Kontaktbacke 12 und Tragarm 11, d.h. dessen Kontaktplatten 112, unterbindet. Diese Möglichkeit ist in Figur 2 angedeutet. Danach sind tragarmseitig in der Anlagefläche 126 der Kontaktbacke 12 Nuten 128 ausgebildet, in die sich mit Überstand Federn 129 einfügen, deren Überstand sich bei am Tragarm 11 angesetzter Kontaktbacke 12 in den vor Kopf des Tragarms 11 befindlichen Kontaktplatten 112 ausgebildete, korrespondierende Nuten einfügen.In a refinement, in addition to the
Claims (9)
- Contact jaw, which is to be associated exchangeably with the contact plate located on the free end of an electrode bracket which forms a component of an electric furnace, for the exchangeable electrode which can be brought to abut by means of a clamp clip guided on the electrode bracket against said contact jaw in order to effect contact, characterised in that the contact jaw which can be brought to abut in a planar manner against a partial region of the electrode is provided in the centre by a passage which runs out towards the bracket and finds its continuation in the bracket.
- Contact jaw according to claim 1, characterised by a concave course of the horizontal faces of the contact jaw which delimit the passage penetrating the contact jaw.
- Contact jaw according to claim 1 or claim 2, characterised in that the passage penetrating the contact jaw in the vertical starting from the rear side of the contact jaw is provided with inclined portions which fall inwards towards the passage.
- Contact jaw according to claim 3, characterised in that the inclined portions which fall inwards start at a spacing from the outer edge of the contact jaw and the remaining regions with inclined portions which fall away outwardly.
- Contact jaw according to claim 3, characterised in that the inclined portions fall inwards towards the passage starting from the outer edges of the contact jaw.
- Contact jaw according to one of the claims 1 to 5, characterised in that the contact jaw on the rear side is provided on both sides with recesses which receive springs, the projecting ends of which fit into corresponding recesses located in the contact plate which forms a component of the electrode bracket, fitting fully into these recesses.
- Contact jaw according to claim 6, characterised in that the recesses extend in the vertical.
- Contact jaw according to claim 6 or claim 7, characterised by springs which fit into the recesses in a snug fit.
- Contact jaw according to one of the claims 1 to 8, characterised in that the borings for the screw connection of the contact jaw to the bracket penetrate the contact jaw in lateral projecting ends of the contact jaw via the contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL05701182T PL1714528T3 (en) | 2004-01-30 | 2005-01-26 | Contact block arranged at the free end of an electrode support arm forming a component of an electric oven |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004005051A DE102004005051A1 (en) | 2004-01-30 | 2004-01-30 | At the free end of a component of an electric furnace forming Elektrodentragarms interchangeable arranged contact jaw |
| PCT/EP2005/000732 WO2005074324A1 (en) | 2004-01-30 | 2005-01-26 | Contact block arranged at the free end of an electrode support arm forming a component of an electric oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1714528A1 EP1714528A1 (en) | 2006-10-25 |
| EP1714528B1 true EP1714528B1 (en) | 2007-08-01 |
Family
ID=34801418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05701182A Active EP1714528B1 (en) | 2004-01-30 | 2005-01-26 | Contact block arranged at the free end of an electrode support arm forming a component of an electric oven |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7682156B2 (en) |
| EP (1) | EP1714528B1 (en) |
| AT (1) | ATE369027T1 (en) |
| DE (2) | DE102004005051A1 (en) |
| ES (1) | ES2292099T3 (en) |
| PL (1) | PL1714528T3 (en) |
| TR (1) | TR200602836T2 (en) |
| WO (1) | WO2005074324A1 (en) |
| ZA (1) | ZA200604859B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2334832B1 (en) | 2008-09-16 | 2017-11-08 | Alcoa Inc. | Sidewall and bottom electrode arrangement for electrical smelting reactors and method for feeding such electrodes |
| DE102022204610A1 (en) | 2022-05-11 | 2023-11-16 | Sms Group Gmbh | Copper contact jaw and process for its production |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2086148A (en) * | 1935-10-22 | 1937-07-06 | Young John | Electrode holder or clamp |
| DE946303C (en) * | 1944-01-29 | 1956-07-26 | Bbc Brown Boveri & Cie | Electrode support device for electric arc furnaces with an air-cooled electrode holder |
| US3444092A (en) * | 1967-03-28 | 1969-05-13 | Andrew Truhan | Fog generator and chamber |
| GB1404661A (en) * | 1972-07-07 | 1975-09-03 | British Steel Corp | Furnace electrode clamp |
| US4110548A (en) * | 1976-12-29 | 1978-08-29 | Bethlehem Steel Corporation | Water-cooled electrode holder |
| BE867144A (en) * | 1978-05-17 | 1978-11-17 | Gyproc Benelux Nv | IMPROVED STYLE FRAME WALLS AND THE LIKE |
| US4323717A (en) * | 1979-02-07 | 1982-04-06 | British Steel Corporation | Furnace electrode clamps |
| ES524130A0 (en) * | 1982-08-26 | 1984-12-16 | Arc Tech Syst Ltd | IMPROVEMENTS IN THE MANUFACTURE OF ELECTRODES FOR ARC FURNACES. |
| DE3517069A1 (en) * | 1985-05-11 | 1986-11-13 | Fried. Krupp Gmbh, 4300 Essen | CONTACT JACK OF AN ELECTRODE SOCKET |
| US4674817A (en) * | 1985-09-13 | 1987-06-23 | Tronomed, Inc. | Medical terminal clip |
| DE8805807U1 (en) * | 1988-05-02 | 1989-08-31 | Kark, Uwe, 2104 Hamburg, De | |
| DE4122151A1 (en) * | 1991-07-04 | 1993-01-07 | Flohe Gmbh & Co | ELECTRODE SOCKET OF AN ELECTRODE ARM |
-
2004
- 2004-01-30 DE DE102004005051A patent/DE102004005051A1/en not_active Withdrawn
-
2005
- 2005-01-26 EP EP05701182A patent/EP1714528B1/en active Active
- 2005-01-26 DE DE502005001143T patent/DE502005001143D1/en active Active
- 2005-01-26 ZA ZA200604859A patent/ZA200604859B/en unknown
- 2005-01-26 AT AT05701182T patent/ATE369027T1/en active
- 2005-01-26 PL PL05701182T patent/PL1714528T3/en unknown
- 2005-01-26 TR TR2006/02836T patent/TR200602836T2/en unknown
- 2005-01-26 ES ES05701182T patent/ES2292099T3/en active Active
- 2005-01-26 US US10/582,723 patent/US7682156B2/en active Active
- 2005-01-26 WO PCT/EP2005/000732 patent/WO2005074324A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| DE502005001143D1 (en) | 2007-09-13 |
| ES2292099T3 (en) | 2008-03-01 |
| WO2005074324A1 (en) | 2005-08-11 |
| US7682156B2 (en) | 2010-03-23 |
| TR200602836T2 (en) | 2006-11-21 |
| EP1714528A1 (en) | 2006-10-25 |
| US20090247022A1 (en) | 2009-10-01 |
| ZA200604859B (en) | 2007-10-31 |
| PL1714528T3 (en) | 2007-12-31 |
| DE102004005051A1 (en) | 2005-08-18 |
| ATE369027T1 (en) | 2007-08-15 |
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