EP3075208B1 - Dispositif et procédé permettant de réajuster une électrode pour un four métallurgique - Google Patents

Dispositif et procédé permettant de réajuster une électrode pour un four métallurgique Download PDF

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Publication number
EP3075208B1
EP3075208B1 EP14805873.8A EP14805873A EP3075208B1 EP 3075208 B1 EP3075208 B1 EP 3075208B1 EP 14805873 A EP14805873 A EP 14805873A EP 3075208 B1 EP3075208 B1 EP 3075208B1
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EP
European Patent Office
Prior art keywords
electrode
clamping ring
clamping
stroke
cylinders
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EP14805873.8A
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German (de)
English (en)
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EP3075208A1 (fr
Inventor
Detlef Strieder
Stefanie FROHN
Roland König
Ralf NÖRTHEMANN
Patrick Henke
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SMS Group GmbH
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SMS Group GmbH
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    • 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
    • H05B7/102—Mountings, supports or terminals at head of electrode, i.e. at the end remote from the arc specially adapted for consumable electrodes

Definitions

  • the invention relates to a device for repositioning an electrode of a metallurgical furnace, and a corresponding method for such repositioning.
  • adjustment devices are known from the prior art, e.g. B. off DE 43 42 511 A1 or EP 1 969 902 B1 . These adjustment devices have at least one clamping ring which can be clamped around the electrode for holding. The clamping ring can be moved relative to the furnace cover by hydraulic cylinders. The electrode can be moved into the furnace if it is held by the clamping ring and this is moved in the direction of the furnace cover by means of the hydraulic cylinder.
  • Support arms are traditionally used in electric arc furnaces to hold, guide and move the electrodes.
  • EP 1 484 566 A1 shows a device for repositioning an electrode of a metallurgical furnace according to the preamble of claim 1.
  • a lower clamping ring is integrated into an electrode support arm, an upper clamping ring being connected to the lower clamping ring via hydraulic cylinders.
  • By actuating the hydraulic cylinder a distance between the clamping rings can be adjusted, in conjunction with repositioning the electrode.
  • the power supply to the electrode is ensured via both the lower clamping ring and the upper clamping ring.
  • the power supply is switched alternately between the two clamping rings when the other clamping ring is used to move the device with respect to the electrode is temporarily not clamped or opened with the electrode.
  • This switching back and forth of the power supply between the electrodes is complex in terms of control technology.
  • the clamping rings which mostly also contain copper contact jaws for the transmission of current to the electrode, are prone to wear and tear in order to apply sufficient clamping forces.
  • US 2005/0259711 A1 shows a system for lowering and / or lifting an electrode of a metallurgical furnace, in which, according to one embodiment, clamping rings are provided, one of which is de-energized and a current transfer to the electrode is ensured by another clamping ring, these clamping rings not being provided by lifting cylinders or the like are connected to each other.
  • the invention is based on the object of creating a device and a method for repositioning an electrode of a metallurgical furnace, an improved power supply to the electrode being ensured with simplified and robust means while at the same time increasing operational reliability.
  • the invention is based on the essential knowledge that the power supply to the electrode takes place permanently only via one of the two clamping rings, which for this purpose has a contact jaw designed for this purpose.
  • the other of the two clamping rings on the other hand, is permanently de-energized and is designed to apply sufficient holding or clamping forces to the electrode.
  • the current transfer to the electrode takes place permanently only via the clamping ring, which, as explained, is equipped with at least one contact jaw for this purpose. Switching the current transmission between the two clamping rings back and forth does not take place in the present invention.
  • At least one of the two clamping rings is equipped with at least one pressure jaw, which is permanently biased in the direction of the electrode by at least one spring device, and is thus designed to be self-locking.
  • the pressure jaw can be moved in the opposite direction by at least one clamping ring cylinder, i. be moved against the bias of the spring device.
  • the clamping ring cylinder is expediently operated hydraulically.
  • the self-locking mechanism just mentioned is to be understood in the sense of the present invention to the effect that the pressure jaw is pressed against the electrode by the bias of the spring device when the clamping ring cylinder is not actuated.
  • the pressure jaw applies a sufficiently high holding force to the electrode, which is matched to the dead weight of the electrode and accordingly prevents the electrode from slipping or relative displacement of the electrode with respect to the clamping ring.
  • the clamping ring cylinder e.g. B. in the event of a defect in the hydraulic system, it is ensured in the sense of a self-locking in any case that the pressure jaw clamps the electrode as explained as a result of the preload by the spring device. If the electrode is to be readjusted, the clamping ring cylinder is moved against the bias of the spring device, so that at least a relative displacement of the electrode with respect to the clamping ring and its pressure jaw is possible. Optionally, it is also possible here to move the clamping ring cylinder so far against the bias of the spring device that the pressure jaw is released from the electrode and lifts off, which also enables the electrode to be repositioned.
  • the sole purpose of the clamping ring with the pressure jaw is to apply sufficiently large holding forces in the radial direction to the electrode.
  • this clamping ring does not fulfill the function of transmitting electricity and is therefore not made of copper or comparable metals. This has a beneficial effect on increased Operational reliability of the device 1 from, in conjunction with a reduced susceptibility to wear.
  • the permanently currentless clamping ring is designed to be self-locking, with the mode of operation just explained.
  • both clamping rings are designed to be self-locking. This increases the safety of the device in the event of a possible failure of the hydraulic system.
  • the device according to the invention can be used for different types of furnaces, and in this case e.g. be connected with a support arm or with a traverse attached to a furnace platform. It is advantageous here if the clamping ring, which has the contact jaw and is used to transmit power to the electrode, is integrated in the support arm or in the cross member.
  • the upper first clamping ring is permanently de-energized, the lower, second clamping ring having the contact jaw for power transmission to the electrode and is expediently integrated in the support arm or in the cross member.
  • Electrode support arm solution found that offers the possibility of automated electrode replacement.
  • the adjustment device can be placed directly above the electrode holder or holder on the support arm. This means that the position at which the electrode is clamped and thus held can be changed without manual intervention. This has the advantage of retrofitting conventional electrode support arms with the adjustment device according to the invention with limited effort.
  • Electrodes used in electric arc furnaces can be composed of adjoining electrode parts.
  • the connection point between the electrode parts represents a sensitive length of the electrode.
  • the control device for controlling the lifting cylinder and the two clamping rings is programmed or control-technically set up in such a way that the compensation stroke for the The lifting cylinder for moving the first clamping ring relative to the second clamping ring can be set variably and automatically so that the first or second clamping ring is clamped again around the electrode after the compensation stroke has been reached exclusively adjacent to the sensitive length of the electrode, but in no case within it Length section.
  • FIG. 1 an adjustment device 1 according to the invention is shown in simplified form in a side view, with which an electrode 2 for an arc furnace (not shown) can be adjusted relative to the furnace or can be adjusted into the furnace.
  • the device 1 comprises an upper, first clamping ring 4 and a lower, second clamping ring 6.
  • the clamping rings 4, 6 are connected to one another by lifting cylinders 8 and can be activated by actuating these lifting cylinders 8 in their distance to one another are adjusted, namely by a compensation stroke a.
  • the lifting cylinders 8 are designed as hydraulic cylinders and are correspondingly connected to a hydraulic system (not shown).
  • the compensation stroke a is in Fig. 1 shown with a maximum size.
  • the compensation stroke a or a distance between the two clamping rings 4, 6 can also be smaller than in FIG Fig. 1 shown. Details regarding a change in the distance between the two clamping rings 4, 6 are explained in detail below.
  • the lower, second clamping ring 6 is connected to a support arm 9 and is preferably integrated into the support arm 9.
  • the support arm 9 can be positioned lower in the vertical direction according to the consumption of the electrode (in Fig. 1 down), usually hydraulic.
  • the support arm 9 is a known component and is therefore not explained in further detail.
  • the lower, second clamping ring 6 is used to transmit current to the electrode 2.
  • the second clamping ring 6 has at least one contact jaw 10 which is in contact with the electrode 2.
  • the power supply to the second clamping ring 6 and thus to the electrode 2 takes place via a power supply line 12 which is connected to the second clamping ring 6.
  • the upper first clamping ring 4 is designed to be permanently currentless and serves to hold or clamp the electrode 2.
  • the first clamping ring 4 is equipped with at least one pressure jaw 14, as evidenced by the sectional view according to Fig. 2 .
  • the pressure jaw 14 is moved radially in the direction of the electrode 2 by a spring device 16, preferably in the form of a spring assembly preloaded so that a sufficient holding or clamping force is applied to the electrode 2.
  • the holding force for the electrode 2 is thus generated by the spring assembly 16.
  • the first clamping ring 4 has at least one clamping ring cylinder 18, which is preferably designed as a hydraulic cylinder.
  • the clamping ring cylinder 18 has the function of moving or opening the pressure jaw 14 against the bias of the spring assembly 16 in order to reduce the clamping force applied to the electrode 2 for moving the electrode 2 relative to the first clamping ring 4 or cancel.
  • the clamping ring cylinder 18 can be actuated in such a way that either the electrode 2 can be displaced relative to the pressure jaw 14, or the pressure jaw 14 lifts completely from the electrode 2 and is no longer in contact with the electrode 2.
  • the first clamping ring 4 has a total of three clamping ring cylinders 18.
  • the clamping ring z. B four clamping ring cylinders 18 are provided, such as in Fig. 2a shown. Notwithstanding this, the number of clamping ring cylinders 18 can also be less than three or more than four.
  • the lower, second clamping ring 6 can also be equipped with a pressure jaw for holding the electrode, in conjunction with at least one clamping ring cylinder which, as explained, interacts with the pressure jaw.
  • a pressure jaw for holding the electrode
  • at least one clamping ring cylinder which, as explained, interacts with the pressure jaw.
  • the pressure jaw and the clamping ring cylinder for the lower second clamping ring 6 are not shown.
  • the device 1 comprises a control device 20 by means of which the two clamping rings 4, 6 and also the lifting cylinders 8 can be controlled.
  • Fig. 3 shows a further embodiment of the device 1.
  • the same features are provided with the same reference numerals.
  • the lower, second clamping ring 6 is integrated in a cross member 22 which is attached to a furnace platform 26 in a suspended manner via hydraulically operated regulating cylinders 24.
  • the second clamping ring 6 and thus the entire device 1 can be moved in the vertical direction by actuating the regulating cylinder 24, in the direction of a furnace lid (not shown) or away from it.
  • the pressure jaws 14 of the first and second clamping rings 4, 6 are shown in FIG Fig. 3 indicated in greatly simplified form.
  • the clamping ring cylinder 18 and the contact jaw 10, which is provided for the lower second clamping ring 6, are in the Fig. 3 not shown for the sake of simplicity.
  • the electrode string can also be designed in an upright design, in which the regulating cylinders 24 are supported downward on a suitable frame or the like.
  • the electrode 2 When an arc furnace is in operation, the electrode 2 is compensated for by adjusting it in the direction of the furnace cover.
  • This can in the embodiment according to Fig. 1 by a vertical lowering of the support arm 9, and in the embodiment according to FIG Fig. 3 by extending the regulating cylinder 24, the electrode 2 being held at least by the upper first clamping ring 4, and optionally also by the second lower clamping ring 6, provided this is provided with pressure jaws 14.
  • Such readjustment of the electrode 2 by a vertical movement of the support arm 9 or by actuating the regulating cylinder 24 is known per se and is therefore not explained further.
  • the invention functions with regard to a readjustment of the electrode 2 as follows: At the beginning of a readjustment process, it is assumed that the two clamping rings 4, 6 are only at a small distance from one another, the compensation stroke a being essentially zero.
  • the clamping ring cylinders 18 are each completely relieved, as a result of which the pressure jaws 14 are pressed against the electrode 2 with the full bias of the respective spring assemblies 16 in order to hold them.
  • the clamping ring cylinders 18 of the upper first clamping ring 4 are now actuated so that the pressure jaws 14 of the upper first clamping ring 4 either press against the electrode 2 with only a reduced clamping force or lift off the electrode 2.
  • the hydraulic cylinders 8 are then actuated and extended so that the upper, first clamping ring 4 is spaced apart from the lower, second clamping ring 6, namely until, for example, the maximum compensation stroke a (cf. Fig. 1 ) is reached. Thereafter, the clamping ring cylinders 18 of the first clamping ring 4 are relieved again, whereby the pressure jaws 14 of the first clamping ring 4 are closed and the electrode 2 clamped. The clamping ring cylinders 18 of the lower second clamping ring 6 are now actuated, so that a relative movement of the electrode 2 with respect to the lower second clamping ring 6 is possible.
  • the electrode 2 can be composed of different electrode parts which are connected to one another at their respective end faces. When connecting such electrode parts, it can be problematic that an axial offset is formed at a connection point between adjacent electrode parts.
  • FIG. 4 an electrode 2 with an axial offset at a connection point between adjacent electrode parts is shown schematically in a greatly simplified manner. If one of the clamping rings 4, 6 radially braces the electrode 2 for holding or clamping in the area of the connection point between the electrode parts with a force F, this connection point is subjected to disadvantageous shear loads. Particularly in the case of long or heavy electrodes, this can lead to immediate or time-delayed damage, or even cause the electrode to break. A possible electrode break leads to a malfunction and disadvantageous business interruption with corresponding costs.
  • the device 1 can have at least one sensor device 28 on the first clamping ring 4 and / or on the second clamping ring 6.
  • a sensor device 28 has the purpose of detecting a marking provided on the electrode 2 for a sensitive length section of the electrode 2 so that the clamping rings or their pressure jaws 14 do not clamp the electrode 2 in this sensitive length section.
  • the lifting cylinders 8 are activated or regulated accordingly by the control device 20 as a function of signals from the sensor device 28.
  • a sensor device 28 can be provided at least on the first upper clamping ring 4, which is shown in the side view of FIG Fig. 5 is shown in greatly simplified detail.
  • Three sensor devices 28 can be attached to an upper edge of the first clamping ring 4 by means of suitable mountings.
  • the Fig. 5 it is a developed representation, with the three Sensor devices 28 are attached to the annular first clamping ring 4 at a uniform distance from one another.
  • the sensor devices 28 are attached to the first clamping ring 4 in such a way that they lie together in a virtual horizontal plane E.
  • this plane E is transverse or perpendicular to the longitudinal axis of the electrode 2. It is also possible for more or less than three sensor devices 28 to be attached to the first clamping ring 4, in the latter case preferably at an even distance from one another.
  • the sensor devices 28 can also be arranged in the region of an inner circumferential surface of the clamping ring 4.
  • a sensor device 28 on the upper first clamping ring 4 is in each case greatly simplified and shown symbolically only in the form of a rectangle.
  • the sensor device 28 is connected to the control device 20, with which the hydraulic components of the device 1 can also be controlled.
  • the purpose of the sensor device 28 is to use it to detect markings that are provided on the electrode 2. In the representations of the Figures 6 to 9 these markings 30 are shown in simplified form and explained below.
  • the electrode 2 consists in its longitudinal direction of a plurality of electrode parts which are connected to one another at their respective end faces.
  • two such electrode parts 2a, 2b are shown before they are connected to one another by means of a screw connection 32.
  • the electrode parts 2a, 2b are each provided with a marking 30 which runs transversely to the longitudinal side of the electrode 2 and can, for example, consist of a luminescent colored ribbon or the like.
  • Fig. 7 are the Electrode parts 2a, 2b shown in their assembled state.
  • the two markings 30 define or identify in the longitudinal direction of the electrode 2 a sensitive length section 2l, the axial length of which is defined by the screwed connection point between the two electrode parts 2a, 2b.
  • FIGS. 8 and 9 an alternative embodiment of the markings 30 on the electrode 2 is shown in simplified form.
  • the FIGS. 8 and 9 show in the same way as that FIGS. 6 and 7 two adjacent electrode parts 2a, 2b before and after a connection at their opposite end faces.
  • the markings 30 on the electrode parts 2a, 2b are each formed by an annular groove 30r which runs transversely to the longitudinal axis of the electrode 2.
  • the position of such an annular groove 30r can, for example, be detected by a sensor device in the form of a light sensor which emits radiation in the direction of the electrode 2.
  • at least one light sensor, which emits radiation in the direction of the electrode 2 is attached to the upper, first clamping ring 4.
  • the light sensor can direct the radiation to an edge region of the electrode 2, so that the radiation passes through the annular groove 30r when the annular groove 30r is at the level of the light sensor. In this case, it is then detected that the upper clamping ring 4 is located within the area of the sensitive length section 2l of the electrode 2. Otherwise, ie if the annular groove 30r is not positioned adjacent to the light sensor, the radiation is interrupted by the wall of the electrode 2, which means that the light sensor and thus also the first clamping ring 4 are located on a non-critical section of the electrode 2 .
  • the design of the marking 30 in the form of the aforementioned annular groove 30r has the advantage that it can be manufactured inexpensively and is insensitive to contamination.
  • the markings 30 on the electrode 2 it goes without saying that the design in the form of a luminescent colored ribbon (cf. Fig. 6, Fig. 7 ) also with the design in the form of the annular groove (cf. Fig. 8, Fig. 9 ) can be combined.
  • the marking 30 can also have magnetic properties that can be detected by a correspondingly adapted sensor device 28.
  • the second clamping ring 6 can also be provided with a sensor device 28 which is signal-connected to the control device 20 and with which a marking 30 on the electrode 2 and so that a sensitive length section 2l of the electrode 2 can be detected.
  • a sensor device 28 which is signal-connected to the control device 20 and with which a marking 30 on the electrode 2 and so that a sensitive length section 2l of the electrode 2 can be detected.
  • this is symbolized in a simplified manner by a rectangle with the reference symbol “28” above the second clamping ring 6.
  • At least one sensor device 28 can be attached to the second clamping ring 6 in the same way as to the first clamping ring 4, so that reference is made to the above explanation to avoid repetition.
  • the control device 20 is represented symbolically in the drawing by a rectangle and in this respect only in a greatly simplified manner.
  • the individual data connections between the control device 20 and the respective sensor devices 28 or hydraulic units 8, 18, 24, which can be read out or controlled by the control device 20, are indicated in the drawing with dashed lines 21.
  • These data connections 21 can be implemented, for example, by cable links or by radio links.
  • the distance between the first clamping ring 4 and the second clamping ring 6 is increased by extending the lifting cylinder 8.
  • an evaluation of the signals from the sensor devices 28 is used to check whether the first clamping ring 4 is possibly positioned in the area of a sensitive length section 2l of the electrode 2.
  • a renewed clamping or holding of the electrode 2 by the first clamping ring 4 is initiated exclusively in the event that the first clamping ring 4 is not positioned in the area of a sensitive length section 2l of the electrode 2 after the lifting cylinder 8 has been extended.
  • the lifting cylinders 8 - if possible - are either extended further, or, conversely, retracted a little. In any case, the lifting cylinders 8 are actuated or extended so far that the first clamping ring 4 is not located in the area of the sensitive length section 2l of the electrode 2. Only then is the electrode 2 clamped again by adjusting the pressure jaw 14.
  • the sensitive length section 2l of the electrode 2 is detected by the at least one sensor device 28 with the aid of the markings 30, 30r provided thereon, in order to prevent the electrode 2 from jamming in this area by a clamping ring.
  • the sensitive length section 21 of the electrode or the end-face sections of the respective electrode parts are also referred to as the nipple area, which is thus effectively protected against jamming by a clamping ring and possible damage resulting therefrom.
  • the invention is suitable for various forms of electrodes that are used in electric arc furnaces or electric reduction furnaces.
  • Exemplary electrode types are “pre-baked” electrodes (e.g. graphite or carbon electrodes) or self-baking (Söderberg) electrodes.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Furnace Details (AREA)
  • Discharge Heating (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Claims (16)

  1. Dispositif (1) destiné au réajustement d'une électrode (2) d'un four métallurgique, qui comprend :
    une première bague de serrage supérieure (4) et une deuxième bague de serrage inférieure (6) ; dans lequel les bagues de serrage (4, 6) sont reliées l'une à l'autre par l'intermédiaire de cylindres de levage (8) et peuvent faire l'objet d'un déplacement, via une mise en service des cylindres de levage (8), en ce qui concerne leur écartement réciproque, à concurrence d'une course de compensation (a) ; dans lequel les bagues de serrage (4, 6) peuvent entourer l'électrode (2) en l'enserrant dans le but de maintenir cette dernière et peuvent s'en détacher pour un mouvement relatif de l'électrode (2) par rapport aux bagues de serrage (4, 6) ; et
    un mécanisme de commande (20) destiné à la commande du cylindre de levage (8) et des bagues de serrage (4, 6) ;
    caractérisé
    en ce qu'au moins une des deux bagues de serrage (4, 6) est mise hors tension de manière permanente ; dans lequel l'autre bague respective parmi les deux bagues de serrage (6, 4) présente au moins une mâchoire de contact (10) au moyen de laquelle on garantit un transfert de courant constant à l'électrode (2).
  2. Dispositif (1) selon la revendication 1, caractérisé en ce qu'au moins une des deux bagues de serrage (4, 6) présente une mâchoire de pression (14) qui est mise en état de précontrainte de manière permanente contre l'électrode (2) par l'intermédiaire d'au moins un mécanisme (16) faisant office de ressort et est par conséquence réalisée de manière à ne pas pouvoir être desserrée ; dans lequel la mâchoire de pression (14) peut être mise en mouvement par l'intermédiaire d'au moins un vérin de bague de serrage (18) à l'encontre de la mise en état de précontrainte du mécanisme (16) faisant office de ressort ; de préférence, en ce que la mâchoire de pression (14) peut se désolidariser de l'électrode (2) par la mise en service du vérin de bague de serrage (18).
  3. Dispositif (1) selon la revendication 2, caractérisé en ce que le mécanisme (16) faisant office de ressort est réalisé sous la forme d'un bloc-ressort.
  4. Dispositif (1) selon la revendication 2 ou 3, caractérisé en ce que l'on prévoit deux vérins (18) de bagues de serrage, de préférence quatre vérins (18) de bagues de serrage, avec lesquels la mâchoire de pression (14) peut être mise en mouvement à l'encontre de la mise en état de précontrainte du mécanisme (16) faisant office de ressort.
  5. Dispositif (1) selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la bague de serrage (4, 6) qui est mise hors tension de manière permanente est réalisée de manière à ne pas pouvoir être desserrée et présente de cette manière la mâchoire de pression (14) et le vérin (18) de bague de serrage.
  6. Dispositif (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la bague de serrage (4, 6) qui présente la mâchoire de contact (10) est reliée au moyen d'un bras de support (9) ou au moyen d'une traverse (22) ; dans lequel le bras de support (9), respectivement la traverse (22) peut se déplacer en direction verticale par rapport au four ; de préférence, en ce que cette bague de serrage (4, 6) est intégrée dans le bras de support (9) ou dans la traverse (22).
  7. Dispositif (1) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la première bague de serrage supérieure (4) est mise hors tension de manière permanente ; dans lequel la deuxième bague de serrage inférieure (6) présente la mâchoire de contact (10).
  8. Dispositif (1) selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le mécanisme de commande (20) est conçu, en ce qui concerne la technique de programmation, d'une manière telle que la course de compensation (a) pour les cylindres de levage (8) dans le but de déplacer les bagues de serrage (4, 6) l'une par rapport à l'autre peut être réglée de manière variable et de manière automatisée, de telle façon qu'un serrage renouvelé de la première ou de la deuxième bague de serrage (4, 6) autour de l'électrode (2), une fois la course de compensation (a) aboutie, a lieu de manière exclusive en position adjacente à un tronçon longitudinal sensible (2l) de l'électrode (2) et non au sein de ce tronçon longitudinal (2l).
  9. Dispositif (1) selon la revendication 8, caractérisé en ce qu'au moins la première bague de serrage (4) ou la deuxième bague de serrage (6) présente au moins un mécanisme (28) faisant office de capteur, avec lequel des repères (30) qui sont prévus contre l'électrode (2) pour un tronçon longitudinal sensible (2l) de l'électrode (2) peuvent être détectés ; dans lequel les cylindres de levage (8) peuvent être réglés par l'intermédiaire du mécanisme de commande (20) pour la mise en oeuvre de la course de compensation (a) en fonction de signaux émis par le mécanisme (20) faisant office de capteur.
  10. Dispositif (1) selon la revendication 9, caractérisé en ce que les cylindres de levage (8) peuvent être mis en service, pour le déplacement de la première ou de la deuxième bague de serrage (4, 6), à concurrence de la course de compensation (a), par l'intermédiaire de l'activation au moyen du mécanisme de commande (20), uniquement avec cette condition que les cylindres de levage (8) disposent d'une réserve de course prédéterminée qui est supérieure à une longueur axiale du tronçon longitudinal sensible (2l) de l'électrode (2).
  11. Dispositif (1) selon la revendication 9 ou 10, caractérisé en ce que le mécanisme (28) faisant office de capteur est approprié pour la détection d'un repère (30) contre l'électrode (2), qui est réalisé sous une forme optique et/ou sous une forme magnétique et/ou qui présente la forme d'une rainure annulaire (30r).
  12. Procédé destiné au réajustement d'une électrode (2) d'un four métallurgique par l'intermédiaire de l'utilisation d'un dispositif (1) selon l'une quelconque des revendications 1 à 11, caractérisé en ce que du courant est alimenté à l'électrode (2) uniquement par l'intermédiaire d'une des deux bagues de serrage (4, 6) et l'autre bague parmi les deux bagues de serrage (6, 4) est mise hors tension de manière permanente.
  13. Procédé selon la revendication 12, caractérisé en ce qu'au moins une des deux bagues de serrage (4, 6) présente une mâchoire de pression (14) qui est mise en état de précontrainte de manière permanente contre l'électrode (2) au moyen d'au moins un mécanisme (16) faisant office de ressort pour le maintien de l'électrode (2) ; dans lequel la mâchoire de pression (14) est mise en mouvement à l'encontre de la mise en état de précontrainte du mécanisme (16) faisant office de ressort, par l'intermédiaire d'au moins un vérin (18) de bague de serrage, pour permettre un mouvement relatif de l'électrode (2) par rapport à la bague de serrage (4, 6) ; de préférence en ce que la mâchoire de pression (14) se soulève par rapport à l'électrode suite à l'activation du vérin (18) de la bague de serrage.
  14. Procédé selon la revendication 12 ou 13, caractérisé en ce qu'un tronçon longitudinal sensible (2l) de l'électrode (2) est muni de repères (30) qui sont détectés par au moins un mécanisme (28) faisant office de capteur appliqué contre la première ou la deuxième bague de serrage (4, 6) ; dans lequel les cylindres de levage sont réglés à des fins de déplacement des bagues de serrage (4, 6) l'une par rapport à l'autre en fonction des signaux du mécanisme (28) faisant office de capteur.
  15. Procédé selon la revendication 14, caractérisé en ce que les cylindres de levage (8) destinés au déplacement de la première bague de serrage (4) par rapport à la deuxième bague de serrage (6) peuvent être réglés, en fonction du tronçon longitudinal sensible (2l) de l'électrode (2), d'une manière telle qu'un serrage renouvelé de la première ou de la deuxième bague de serrage (4, 6) autour de l'électrode (2), une fois la course de compensation (a) aboutie, a lieu de manière exclusive en position adjacente au tronçon longitudinal sensible (2l) de l'électrode (2) et non au sein de ce tronçon longitudinal (2l).
  16. Procédé selon la revendication 15, caractérisé en ce que les cylindres de levage (8) destinés au déplacement de la première bague de serrage (4) par rapport à la deuxième bague de serrage (6) ne sont activés qu'à la condition de disposer d'une réserve de course prédéterminée (a) qui est supérieure à une longueur axiale du tronçon longitudinal sensible (2l) de l'électrode (2).
EP14805873.8A 2013-11-29 2014-11-28 Dispositif et procédé permettant de réajuster une électrode pour un four métallurgique Active EP3075208B1 (fr)

Applications Claiming Priority (2)

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DE102013224552.1A DE102013224552A1 (de) 2013-11-29 2013-11-29 Vorrichtung und Verfahren zum Nachsetzen einer Elektrode für einen metallurgischen Ofen
PCT/EP2014/075944 WO2015079024A1 (fr) 2013-11-29 2014-11-28 Dispositif et procédé permettant de réajuster une électrode pour un four métallurgique

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FI20165035A (fi) * 2016-01-20 2017-07-21 Outotec Finland Oy Menetelmä valokaariuunin yläelektrodiasetelmakokoonpanon käyttämiseksi ja valokaariuunin yläelektrodiasetelmakokoonpano
CN109897969A (zh) * 2017-12-07 2019-06-18 天工爱和特钢有限公司 一种模具钢用的电渣炉
WO2019233549A1 (fr) * 2018-06-04 2019-12-12 Rheinfelden Carbon Gmbh & Co. Kg Électrode à auto-cuisson
DE102019217433A1 (de) * 2019-11-12 2021-05-12 Sms Group Gmbh Elektrodenhaltevorrichtung und System zum Nachsetzen einer Elektrode eines metallurigschen Ofens
CN111043865B (zh) * 2019-12-24 2022-09-02 南京玻璃纤维研究设计院有限公司 用于电熔炉生产的电极给进装置
WO2024178618A1 (fr) * 2023-02-28 2024-09-06 宁德烯铖科技有限公司 Four de graphitisation et son procédé de commande, et système de production de batterie

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CN105935002B (zh) 2019-10-22
CN105935002A (zh) 2016-09-07
DE102013224552A1 (de) 2015-06-03
EP3075208A1 (fr) 2016-10-05
WO2015079024A1 (fr) 2015-06-04

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