EP3766599B1 - Dispositif a bobine electromagnetique pour un rouleau agitateur electromagnetique d'une installation de coulee continue - Google Patents

Dispositif a bobine electromagnetique pour un rouleau agitateur electromagnetique d'une installation de coulee continue Download PDF

Info

Publication number
EP3766599B1
EP3766599B1 EP20185850.3A EP20185850A EP3766599B1 EP 3766599 B1 EP3766599 B1 EP 3766599B1 EP 20185850 A EP20185850 A EP 20185850A EP 3766599 B1 EP3766599 B1 EP 3766599B1
Authority
EP
European Patent Office
Prior art keywords
coil winding
iron core
winding assemblies
electromagnetic
cross
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
Application number
EP20185850.3A
Other languages
German (de)
English (en)
Other versions
EP3766599A1 (fr
Inventor
Peter Paul WIMMER
Martin Hirschmanner
Felix LINDLBAUER
Andreas ROHRHOFER
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.)
Primetals Technologies Austria GmbH
Original Assignee
Primetals Technologies Austria GmbH
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 Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Publication of EP3766599A1 publication Critical patent/EP3766599A1/fr
Application granted granted Critical
Publication of EP3766599B1 publication Critical patent/EP3766599B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/122—Accessories for subsequent treating or working cast stock in situ using magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/34—Arrangements for circulation of melts
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements

Definitions

  • Electromagnetic stirrers are used in continuous casting plants to produce high-quality electrical steel. If the stirrer is located in the area of the so-called pouring arch, it is referred to as a strand stirrer. If the electromagnetic stirrer is installed in a roller of a segment of the continuous casting plant, it is referred to as a so-called stirrer roller.
  • the strand agitator creates a stirring force in the liquid section of the strand that moves the liquid steel horizontally along a casting production width and creates a butterfly-like flow pattern in the liquid steel.
  • the construction sees there is always a pair of rollers that act on the strand from both sides.
  • Such agitator rollers are, for example, from the documents US2015/0290703 A1 and US2013/0008624 A1 known.
  • These stirring rollers consist of an iron core and coil winding packs.
  • These coil winding packets consist of a wire that is wound into a large number of windings lying next to one another and layers lying one on top of the other. The wire is covered with an electrical insulation layer.
  • the current-carrying coil winding packets enclosing the iron core generate the magnetic flux, which depends on the number of turns and the current strength in the windings. The magnitude of the magnetic flux density in turn determines the strength of the stirring force of the electromagnetic stirring roller.
  • the agitator rollers have at least two electrical connection contacts in order to connect different phases in each case.
  • Known electromagnetic agitator rollers are mostly designed with two phases, but three-phase designs are also known.
  • the arrangement of the coil winding packets on an iron core which has a longitudinal extension means that coil winding packets at the edge with the same number of turns have a lower inductance than coil winding packets in the middle area. This is because an air gap of the magnetic circuit is larger at the periphery than at the center, increasing magnetic reluctance.
  • the object of this invention is an electromagnetic coil assembly and a to create electromagnetic stirring roller of the type mentioned, so that all interconnected coil winding packages are designed so that they have the same maximum current carrying capacity.
  • the object is achieved with the electromagnetic coil arrangement mentioned at the outset in that the coil winding packages closest to the fastening stubs and all coil winding packages electrically connected to them have a higher total number of turns than a total number of turns of all other coil winding packages - each electrically connected to one another.
  • the coil winding packs which are placed at the edge, have a larger air gap, since magnetic field lines emerge at least partially via one of the two end faces of the iron core. This means that these coil winding packages have a greater length of the air gap l air in the magnetic circuit compared to those coil winding packages that are not placed at the edge. This means that the total magnetic resistance R m,ges (cf. equation 4) is higher and the inductance therefore decreases.
  • the inductance L is calculated by Equation 1, where N is the number of turns.
  • the magnetic resistance in the air gap is calculated using Equation 2, where ⁇ 0 is the permeability of vacuum and A is the cross-sectional area of the magnetic conductor.
  • Equation 3 shows the formula for the magnetic reluctance in iron, where ⁇ r is the relative permeability of the iron core.
  • the embodiment according to the invention provides that all of the coil winding packages connected to an electrical contact each have almost the same inductance.
  • the inductance can be changed either via the number of turns N or via the magnetic resistance R m,ges .
  • the simplest version is obtained by adjusting the number of turns.
  • the coil winding packets connected to the individual electrical connection contacts should have almost the same current carrying capacity and inductance by adapting the total number of turns. With this solution it is possible to increase the electrical output of the agitator roller in the range of 5% with the same space conditions. This is done by an ideal - ie the same - current distribution to all coil winding packets of the electromagnetic coil winding arrangement.
  • the electrical coil winding arrangement has three electrical connection contacts and the number of coil winding packages corresponds to a multiple of three plus two.
  • the number of coil winding packages is, for example, at least five, preferably at least eight, particularly preferably at least eleven, very particularly preferably fourteen coil winding packets.
  • the coil winding packages closest to the fastening stubs have a smaller number of turns than the remaining coil winding packages.
  • the coil winding packets which are arranged in the vicinity of the attachment stub, that is to say are arranged on the edge of the iron core, serve as so-called compensating coil winding packets.
  • a connection contact is connected to the two coil winding packages closest to the fastening stub.
  • the number of turns of the compensating coil winding packs is greater than half the number of turns but less than the number of turns of the remaining coil winding packs.
  • Another embodiment is that two electrical connection contacts are connected to a compensating coil winding packet.
  • the electromagnetic coil winding arrangement has three electrical connection contacts.
  • the number of coil winding packages is at least three or a multiple of three.
  • the coil winding packages closest to the fastening stubs have a larger number of turns than the remaining coil winding packages.
  • at least two electrical terminals are connected to a coil winding package closest to the mounting stubs.
  • An expedient embodiment provides that the iron core is arranged in a hollow support tube with a second longitudinal extension.
  • the support tube therefore has a hollow cross section and extends along a longitudinal axis.
  • the support tube has a support tube length which is of the order of magnitude of the casting production width.
  • the iron core can be stabilized over the casting production width by the support tube.
  • the iron core is arranged in a hollow support tube.
  • the iron core is designed as a laminated iron core.
  • the iron core is a laminated and insulated stack of laminations so that eddy current losses are minimized as much as possible.
  • the support tube consists of a hollow profile with an inner wall, an outer wall and a second longitudinal extension.
  • the support tube therefore has a hollow cross section and extends in one direction—that is, it has a certain length.
  • the support tube ensures the stability of the iron core along the first longitudinal extension and thus acts as a support structure for the iron core.
  • this design inevitably leads to an increase in the air gap between the winding packages and the iron core and also to an additional heat input in the support tube due to eddy current losses.
  • the supporting body has at least one slit with a predetermined slit area along the second longitudinal extent, and the slit extends from the outer wall to the inner wall.
  • the slit has a slit length along the second longitudinal extent and a slit width perpendicular to the longitudinal extent.
  • the slot width and slot length are understood to mean the largest dimension in each case.
  • the slot has a rectangular shape.
  • the support tube is preferably designed as a tube with an annular cross-section.
  • the iron core is designed in such a way that a partial volume of the iron core can be pushed into the slot from the inner surface of the support tube in the direction of the outer surface of the support tube.
  • the partial volume of the iron core, which is pushed into the slot is therefore preferably designed as a negative to the slot.
  • the partial volume fills the slit almost completely.
  • the slot and the partial volume of the iron core can, of course, have different dimensions in order to facilitate assembly and manufacture.
  • the core of the invention is that the support tube over the stability of the iron core Casting production width guaranteed and the partial volume of the iron core has the smallest possible distance to the coil winding packages.
  • the at least two coil winding packets enclose the outer wall of the support tube completely and in partial areas along the second longitudinal extent. By inserting the iron core into the slot of the support tube, the coil winding packs can be arranged very close to the iron core.
  • the coil winding packages have a protective layer for protection and insulation. This protective layer completely encloses the coil winding packages.
  • the protective layer surrounds the coil winding packets in such a way that at least an outer side and both lateral surfaces of the coil winding packet are surrounded by the protective layer.
  • the fastening stubs are each arranged on the front side of the support tube.
  • the connection contacts are each connected to at least one coil winding package. A preferred arrangement of the electrical connection contacts is on the end faces of the fastening stubs.
  • the fastening stubs have bushings which make it possible to guide the coil contacts to an end face of the fastening stub that can be seen from the outside.
  • the coil winding packages can then be electrically connected to this end face via the electrical connection contacts.
  • the fastening stubs have the function of being able to mount the coil arrangement on a bearing block.
  • this design enables the arrangement of the iron core across the casting production width due to the support tube and, on the other hand, the minimization of the distance between the coil winding packets and the iron core leads to an increase in the magnetic flux and thus to an increase in the stirring effect. This increase in the magnetic flux can take place without increasing the current and the space requirement.
  • a protective tube with a hollow cross section, preferably a circular cross section encloses the coil winding packages.
  • the protective tube extends at least over the two coil winding packs.
  • a possible design of the protective tube is that it consists of several parts and existing joints are sealed - for example with glued metal strips.
  • the gaps between the protective tube and the coil winding packages are filled with filling compound.
  • the filling compound means that as much heat as possible is transferred to an inside of the protective tube.
  • This protective tube is made of a material with good thermal conductivity, preferably non-magnetic steel, and thus conducts the heat from an inside to an outside of the protective tube.
  • the filling compound has a thermal conductivity of greater 0.1 W m K , preferably larger 1 W m K , having.
  • the filling compound with this thermal conductivity ensures particularly good heat dissipation from the coil winding packages to the protective tube.
  • the support tube has a plurality of slits along the second longitudinal extension, in particular at least two, preferably at least four, particularly preferably at least six, very particularly preferably eight slits, each with a predetermined slit area.
  • the iron core is designed in such a way that in each case a partial volume of the iron core can be pushed into one of these slots; the respective partial volumes preferably fill the respective slots completely.
  • the design with several slits has the advantage that an expansion of the tube due to possible internal mechanical stresses in the tube is prevented by means of webs located between the slits. This embodiment therefore provides for between three and ten slots to be present, which are arranged along the second longitudinal extent.
  • the iron core therefore has a partial volume for each slot, which can be pushed into the slots.
  • the bars in the iron core must also be shown as a negative, so that the partial volumes can be pushed into the respective slots.
  • a further preferred embodiment provides that cooling channels are arranged next to the iron core within the support tube. These cooling channels run close to the iron core in order to dissipate the heat generated as effectively as possible.
  • the cooling channels can be designed as a tube that is pushed into the support tube next to the iron core.
  • a further advantageous embodiment of the invention provides that the iron core has at least one cooling channel.
  • the heat generated in the iron core can be dissipated particularly effectively.
  • a further advantageous embodiment provides that the slot area is rectangular. This embodiment is preferred in order to achieve the largest possible slot area.
  • the coil winding packets consist of a maximum of two layers lying one on top of the other, preferably only one layer, and a large number of windings lying next to one another.
  • the respective coil winding packet thus consists of a large number of turns that are wound next to one another and of a maximum of two turns lying one above the other.
  • the number of turns is determined by calculations and depends on a maximum available voltage and a maximum current density at a given stirring frequency. The goal is always to provide the highest possible stirring effect, i.e. the highest possible magnetic flux density.
  • the individual windings are covered with an insulating material so that the individual windings are electrically insulated from one another.
  • the insulating material is preferably a polyimide film.
  • the heat can be dissipated more easily to the outside or to the protective tube - which can be easily cooled from the outside. It has also been shown that by minimizing the layers - to a maximum of two - the electromagnetic flux density can be kept at a higher level over a longer period of time than is the case with an embodiment with more than two layers, since the heat generated can be discharged better.
  • This design reduces a temperature difference between the inner layer and the outer layer down to 120 Kelvin. In the preferred embodiment of the coil winding packets with only one layer, the temperature difference between inside and outside can be reduced to up to 60 Kelvin—at a current density of 17 A/m 2 .
  • a particularly preferred embodiment is that the windings have a rectangular cross-section, the dimension of the winding being larger in the radial direction than in the axial direction.
  • the windings are therefore designed as so-called standing windings. Due to the rectangular cross section, several narrow and high windings can be arranged next to each other in order to obtain the desired number of windings and still produce a compact coil winding package.
  • rectangular also means that the corners can have curves, which ensure easier assembly when assembling the coil winding arrangement.
  • a winding with a rectangular cross section and only one layer has turned out to be a particularly preferred embodiment.
  • This embodiment variant results in particularly good heat dissipation to the outside. Experiments have shown that this results in the lowest temperature difference. In this single-layer design, there are no transitions in the radial direction from the insulated winding to the insulated winding lying above it, which results in particularly good heat transport to the outside.
  • the electrical connection contacts have a bolt with a bolt cross-sectional area, which can transmit a required energy to the coil winding packets, and a fastening bolt stub, with a fastening cross-sectional area.
  • the bolt cross-sectional area and the fastener cross-sectional area have a ratio of 1.7 to 4.
  • the connection contacts must be able to be arranged and fastened in a very limited space. For this reason, the connection contact should, on the one hand, be able to transmit the required energy to the coil winding packets and, on the other hand, have a reliable attachment.
  • Electrical supply cables should preferably be connected to the connection contacts using a cable lug.
  • the cable lug is pushed onto the fastening stub, whereby this must be fixed in such a way that it has good contact with the cross-sectional area of the bolt.
  • This is preferably done in that the fastening bolt has a thread and the cable lug is pressed onto the fastening cross-sectional area by screwing on a nut. Due to the reduced mounting cross-sectional area, the contacts require less space. This design makes it possible that the connection contacts - despite limited space - to the End faces of the fastening stubs can be arranged.
  • the object according to the invention is achieved by the electromagnetic stirring roller mentioned at the outset.
  • the electromagnetic coil assembly described above is located within the roller.
  • the electromagnetic coil arrangement is fixed to a bearing block on both sides.
  • a cooling channel is formed between the tube and the coil arrangement, which is connected to the inflow and the outflow.
  • This arrangement results in an electromagnetic stirring roller which, with the same electrical connected load and size, achieves a greater magnetic flux and thus an increased stirring effect.
  • the roller is rotatably mounted on the bearing block on both sides.
  • This design has proven to be a particularly robust design.
  • Another embodiment is that the storage takes place on the fastening stubs.
  • FIG. 1 a schematic representation of an embodiment of the coil winding arrangement according to the invention is shown.
  • the iron core 2 with a cross section and a first longitudinal extent is surrounded by a plurality of coil winding packages 10u, 10v, 10w along the first longitudinal extent.
  • Attachment stubs 12 are arranged on each end face of the iron core 2 .
  • the fastening stubs 12 have electrical contacts 15 . These electrical contacts 15 are each connected to a specific number of coil winding packages. Each electrical contact 15 is connected to a phase u, v, w of an electrical supply network.
  • the coil winding packages of phase u 10u and phase w 10w each have a larger number of turns 11b than the coil winding packages of phase v 10v.
  • the phase u and the phase w are each with a Coil winding package 10u, 10w connected which is closest to the mounting stub. These coil winding packages 10u, 10w connected to the phases u and the phase w have a higher number of turns than the coil winding packages 10v connected to the phase v.
  • the coil winding packets 10u, 10v, 10w connected to the individual phases u, v, w should have a number of turns that have almost the same current carrying capacity and almost the same inductance.
  • the number of coil winding packages is a multiple of three - e.g. three, six, nine, twelve, etc..
  • FIG 12 is another schematic representation of an embodiment of the invention.
  • the phase u has an electrical connection with coil winding packages 10u, which are closest to the end faces of the iron core 2 or the fastening stub (not shown).
  • the coil winding packages 10u connected to the phase u have a higher number of turns 11b than the coil winding packages 10v, 10w connected to the phase v and the phase w.
  • This embodiment has only two electrical connection contacts 15 .
  • the phase u is in each case connected to coil winding packages 10u which are closest to the fastening stub 12 . It is of course conceivable with two electrical connection contacts that five, seven, nine, eleven - i.e. multiples of two plus one - coil winding packages 10u, 10v are arranged on the iron core 2 and the coil winding packages 10u closest to the fastening stub 12 are connected to the same phase.
  • This embodiment comprises eight coil winding packages 10u, 10v, 10w, the phases u and v respectively being connected to three coil winding packages 10u, 10v and the phase w with two coil winding packages 10w.
  • the coil winding packages closest to the face of the iron core or the attachment stub (not shown) have a smaller number of turns.
  • the total number of turns of all the coil winding packs connected to phase u and phase v is greater than the total number of turns of the coil winding packs connected to phase w. for the inside 4 illustrated embodiment that at least five coils must be present, but it can also be arranged eight or eleven or thirteen coil winding packets - so a multiple of three plus two coil winding packets.
  • FIG 5 a coil winding arrangement 1 according to the invention is shown.
  • the iron core 2 has a first longitudinal extension L1--that is, a specific length--and the support tube 3 has a second longitudinal extension L2--that is, also a specific length.
  • the support tube 3 has a slot 4 into which a partial volume of the iron core 2a is inserted.
  • the slot 4 extends from the inner wall 3a to an outer wall 3b of the support tube.
  • a residual volume of the iron core 2b is located inside the support tube 3.
  • the support tube 3 and the iron core 2 are enclosed by coil winding packages 11.
  • coil winding packets 11 which are each electrically connected to electrical contacts 15 which are located on the fastening stubs 12. This electrical connection exists on both sides, ie on the left fastening stub 12 and on the right fastening stub 12. During operation, different phases of a supply network are connected to the electrical contacts 15 on one side. The at least two electrical contacts 15 have no electrical connection to one another.
  • the coil winding packages 10 are surrounded by a protective layer 13a.
  • a coil winding arrangement 1 is shown, which differs from figure 5 differs in that the support tube 3 has a plurality of slots 4 .
  • a web 5 is present between the slots. These webs 5 have the function of preventing the support tube 3 from widening when the slot is being made.
  • the webs are arranged in such a way that, in a preferred embodiment, they are completely surrounded by a coil winding packet--that is, the webs 5 lie under a coil winding packet 10.
  • the iron core--in this embodiment with a plurality of slots-- is designed in such a way that it also has a number of partial volumes of the iron core 2a corresponding to the number of slots, which almost completely fill the respective slots.
  • the partial volumes of the iron core 2a are represented by the vertical hatching.
  • the coil winding packs 10 are surrounded by a protective tube 13 . Intermediate spaces present between the coil winding packages 10 and the protective tube 13 are filled with a filling compound 14 .
  • the cross section of a coil winding assembly is in 7 shown.
  • the iron core 2 - which has a cross section A - is arranged in the support tube 3 .
  • the partial volume of the iron core 2a is pushed into the slot 4 of the support tube 3 .
  • the partial volume of the iron core 2a almost fills the slot, but there is a small gap on the left and right to enable insertion.
  • the coil winding packs 3 enclose the iron core 2 and the support tube 3, the coil winding packs 10 having two layers 11a.
  • the coil winding packets 10 are enclosed by the protective tube 13, with a remaining space being filled with filling compound 14. Cooling channels 20 are arranged next to the iron core.
  • a cooling channel is present in the iron core 21 in addition to the cooling channels 20 .
  • the arrangement shown here of the cooling channels is only an example, it is also conceivable that only the cooling channels 20 or only the cooling channels in the iron core 21 are present.
  • the 9 shows a stirring roller 30 according to the invention for a continuous casting plant.
  • the agitator roller 30 includes the coil winding assembly 1 and a roller 31 which supports a strand produced by the continuous casting plant.
  • the coil winding arrangement 1 is on both sides in a bearing block 36 - on the mounting stub 12 - fixed.
  • the roller 31 is rotatably mounted on both sides.
  • the bearing 35 is arranged in the bearing block 36 .
  • a cooling channel 34 is formed in the space between the coil winding arrangement 1 and the roller 31 .
  • a coolant can be supplied through a coolant inflow 32 and removed again through a coolant outflow.
  • the electrical contacts 15 are each connected to a coil winding package 10 .
  • the coil winding packages 10 consist of a layer 11a and a large number of turns 11b.
  • the single-layer design ensures particularly good heat dissipation to the outside to the protective tube 13 or the insulating layer 13a (not shown).
  • the coil winding packages 10 have two layers 11a and each layer 11a has a plurality of turns 11b.
  • connection contacts 15 are shown as a plan view.
  • the space requirement on the attachment stub 12 for connecting three phases is small.
  • An electrical connection cable is fastened in a cable lug 43 and is pressed snugly against the electrical connection contact 15 with a fastening element 42—in the present example a nut.
  • In 13 is a plan and elevation of the in 12 connection contacts described shown schematically.
  • the cable lug 43 is pressed firmly onto the bolt cross section 40a by means of a fastening element (nut) 42 and a washer 44 .
  • the fastening bolt 41 has a fastening bolt cross section 41a.
  • the ratio of bolt cross section 40a and fastening bolt cross section 41a is in the ratio of 1.7 to 4.
  • Bolt 40 is advantageously designed with a round cross section and fastening bolt 41 has a thread.
  • a bolt diameter is in the range of 14 mm to 20 mm in order to be able to transmit the currents required for the coil winding packets.
  • a ratio of bolt diameter to fastening bolt thread diameter - whereby the nominal thread diameter is used here - is between 1.3 and 2.
  • FIG. 14 12 is an enlarged view of an electrical terminal including the bolt 40, the cable lug 43, the washer 44, and the fastener 42 screwed onto the fastener bolt 41.
  • FIG. 14 12 is an enlarged view of an electrical terminal including the bolt 40, the cable lug 43, the washer 44, and the fastener 42 screwed onto the fastener bolt 41.
  • a further preferred embodiment is shown, which differs from that in 12 differs in that a washer 44 is attached on both sides of the cable lug 43.
  • the washer 44 which rests on the bolt 40 can also be rigidly connected to the bolt - for example by being welded to the bolt 40. But it is also conceivable that instead of Washer - which rests on the bolt - a nut is screwed onto the bolt or the fastening bolt.
  • a support tube 3 is shown with a plurality of slots 4, each with a slot surface.
  • the webs 5 are located between the slots 4. The partial volumes of the iron core can be inserted into the slots 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Coils Of Transformers For General Uses (AREA)

Claims (15)

  1. Agencement de bobines électromagnétiques pour un rouleau d'agitation électromagnétique d'une installation de coulée continue comprenant un noyau de fer (2) avec une section transversale A et une première extension longitudinale L1, et au moins trois paquets d'enroulement de bobine (10) entourant le noyau de fer (2), deux tronçons de fixation (12), deux contacts de raccordement électriques (15) qui sont reliés respectivement à au moins un paquet d'enroulement de bobine (10), dans lequel les tronçons de fixation (12) sont agencés respectivement sur le noyau de fer (2) sur la face avant, caractérisé en ce que les paquets d'enroulement de bobine (10) respectivement les plus proches des tronçons de fixation (12) et tous les paquets d'enroulement de bobine (10) reliés électriquement à ceux-ci présentent un nombre total de spires supérieur à un nombre total de spires de tous les autres paquets d'enroulement de bobine (10) reliés respectivement électriquement les uns aux autres.
  2. Agencement de bobines électromagnétiques selon la revendication 1, dans lequel celui-ci présente trois contacts de raccordement électriques (15) et une multiplicité de paquets d'enroulement de bobine (10), dans lequel la multiplicité correspond à un multiple de trois plus deux et les paquets d'enroulement de bobine (10) respectivement les plus proches du tronçon de fixation (12) ont un nombre de spires plus petit que les paquets d'enroulement de bobine restants (10).
  3. Agencement de bobines électromagnétiques selon la revendication 1, dans lequel celui-ci présente trois contacts de raccordement électriques (15) et présente des paquets d'enroulement de bobine (10) en un nombre d'au moins trois ou d'un multiple de trois, dans lequel les paquets d'enroulement de bobine (10) respectivement les plus proches du tronçon de fixation (12) ont un nombre de spires plus grand que les paquets d'enroulement de bobine restants (10).
  4. Agencement de bobines électromagnétiques selon les revendications 1 à 3, dans lequel le noyau de fer (2) est agencé dans un tube de support (3),
    - dans lequel le tube de support (3) est constitué d'un profil creux avec une paroi intérieure (3a) et une paroi extérieure (3b) et une seconde extension longitudinale (L2),
    - dans lequel le tube de support (3) présente au moins une fente (4) le long de la seconde extension longitudinale (L2) avec une surface de fente prédéterminée et la fente (4) s'étend de la paroi intérieure (3a) jusqu'à la paroi extérieure (3b),
    - dans lequel le noyau de fer (2) est conçu de telle sorte qu'un volume partiel du noyau de fer (2a) peut être inséré dans la fente (4) à partir de la paroi intérieure (3a) du tube de support en direction de la paroi extérieure (3b) du tube de support (3), de préférence le volume partiel remplit presque complètement la fente (4),
    - dans lequel les au moins trois paquets d'enroulement de bobine (10) entourent la paroi extérieure (3b) du tube de support (3) dans des zones partielles le long de la seconde extension longitudinale (L2),
    - dans lequel une couche de protection entoure les paquets d'enroulement de bobine,
    - dans lequel les tronçons de fixation (12) sont agencés sur le tube de support (3) côté face avant.
  5. Agencement de bobines électromagnétiques (1) selon la revendication 4, dans lequel la couche de protection est un tube de protection (13) de section transversale creuse, de préférence de section transversale annulaire circulaire, dans lequel le tube de protection (13) entoure les paquets d'enroulement de bobine (10) et des intervalles existants entre le tube de protection (13) et les paquets d'enroulement de bobine (10) sont remplis au moyen d'une masse de remplissage (14).
  6. Agencement de bobines électromagnétiques selon la revendication 5, dans lequel la masse de remplissage (14) présente une conductivité thermique supérieure à 0,1 W m K
    Figure imgb0011
    , de préférence supérieure à 1 W m K
    Figure imgb0012
    .
  7. Agencement de bobines électromagnétiques selon les revendications 4 à 6, dans lequel le tube de support (3) présente le long de la seconde extension longitudinale (L2) une multiplicité de fentes (4), en particulier au moins deux, de préférence au moins quatre, de manière particulièrement préférée au moins six, de manière encore plus particulièrement préférée huit fentes (4), avec chacune une surface de fente prédéterminée, et le noyau de fer (2) est agencé de telle sorte qu'un volume partiel du noyau de fer (2a) peut être inséré dans ces fentes, de préférence les volumes partiels respectifs du noyau de fer (2a) remplissent complètement les fentes.
  8. Agencement de bobines électromagnétiques selon les revendications 1 à 7, dans lequel des canaux de refroidissement (20) sont agencés à l'intérieur du tube de support (3) à côté du noyau de fer (2).
  9. Agencement de bobines électromagnétiques selon les revendications 1 à 8, dans lequel le noyau de fer (2) présente des canaux de refroidissement (21).
  10. Agencement de bobines électromagnétiques selon les revendications 4 à 9, dans lequel la surface de fente est rectangulaire.
  11. Agencement de bobines électromagnétiques selon les revendications 1 à 10, dans lequel les paquets d'enroulement de bobine (10) sont constitués au maximum de deux couches superposées (11a), de préférence seulement d'une couche (11a), ainsi que d'une pluralité de spires juxtaposées (11b) et les spires individuelles (11b) sont recouvertes d'un matériau isolant.
  12. Agencement de bobines électromagnétiques selon la revendication 11, dans lequel les spires (11b) présentent une section transversale rectangulaire, dans lequel la dimension de la spire (11b) dans la direction radiale est plus grande que dans la direction axiale.
  13. Agencement de bobines électromagnétiques selon les revendications 1 à 12, dans lequel les contacts de raccordement électriques (15) comprennent un boulon (40) présentant une surface de section transversale de boulon (40a), qui peut transmettre une énergie requise aux paquets d'enroulement, et un tronçon de boulon de fixation (41) présentant une surface de section transversale de fixation (41a), dans lequel la surface de section transversale de boulon (40a) et la surface de section transversale de fixation (41a) ont un rapport de 1,7 à 4.
  14. Rouleau brasseur électromagnétique pour une installation de coulée continue pour la fabrication de produits de grandes sections transversales, en particulier de brames, comprenant :
    - un rouleau (31) de section transversale creuse circulaire qui est monté de manière rotative des deux côtés,
    - une entrée de milieu de refroidissement (32),
    - une sortie de milieu de refroidissement (33),
    dans lequel l'agencement de bobines électromagnétiques (1) selon les revendications 1 à 13 est agencé à l'intérieur du rouleau (31) et celui-ci est fixé des deux côtés à un support de palier (36), dans lequel un canal de refroidissement (20) est formé entre le tube (31) et l'agencement de bobines (1), lequel est relié à l'entrée (31) et à la sortie (32).
  15. Rouleau brasseur électromagnétique selon la revendication 14, dans lequel le rouleau est monté sur le dispositif de montage de manière à pouvoir tourner des deux côtés.
EP20185850.3A 2019-07-17 2020-07-15 Dispositif a bobine electromagnetique pour un rouleau agitateur electromagnetique d'une installation de coulee continue Active EP3766599B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50646/2019A AT522811B1 (de) 2019-07-17 2019-07-17 Elektromagnetische Spulenanordnung und elektromagnetische Rührrolle für eine Stranggussanlage

Publications (2)

Publication Number Publication Date
EP3766599A1 EP3766599A1 (fr) 2021-01-20
EP3766599B1 true EP3766599B1 (fr) 2022-09-07

Family

ID=71620226

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20185850.3A Active EP3766599B1 (fr) 2019-07-17 2020-07-15 Dispositif a bobine electromagnetique pour un rouleau agitateur electromagnetique d'une installation de coulee continue

Country Status (2)

Country Link
EP (1) EP3766599B1 (fr)
AT (1) AT522811B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240069638A1 (en) * 2022-08-22 2024-02-29 Mina Maged Micheal Farag Mid-air Electromagnetic-based Kinesthetic Haptic Device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494607A1 (fr) * 1980-11-25 1982-05-28 Cem Comp Electro Mec Inducteur a champ glissant et a flux oriente pour rouleau- brasseur de coulee continue de brames
SU1537362A1 (ru) * 1988-02-08 1990-01-23 Всесоюзный научно-исследовательский и проектно-конструкторский институт металлургического машиностроения Индуктор-электромагнитный ролик машины непрерывного лить заготовок
WO2011057426A1 (fr) * 2009-11-12 2011-05-19 湖南中科电气股份有限公司 Rouleau agitateur électromagnétique à champ magnétique élevé pour une zone de refroidissement secondaire d'ébauche de plaque
FR2957829B1 (fr) 2010-03-23 2012-11-09 Rotelec Sa Rouleau brasseur pour machine de coulee continu de brames
US20150290703A1 (en) 2012-03-27 2015-10-15 Rotelec Stirring-roll for a continuous cast machine of metallic products of large cross section

Also Published As

Publication number Publication date
AT522811B1 (de) 2021-10-15
EP3766599A1 (fr) 2021-01-20
AT522811A1 (de) 2021-02-15

Similar Documents

Publication Publication Date Title
DE69503521T2 (de) Synchronmotor mit dauermagneten
DE69922094T2 (de) Transformatorkern aus amorphem Metall
EP2688183B1 (fr) Bobine électrique fabriquée selon une technique de coulage
DE4125044C2 (fr)
DE102018127558A1 (de) Elektrische Maschine mit Statorwicklungen unterschiedlichen Querschnitts
DE112007000344T5 (de) Schutzdrosselteil
EP2918005B1 (fr) Cage d'écureuil sécurisée
DE2809070C2 (de) Elektrischer Linearmotor
EP0629311A1 (fr) Bobine pour un transformeur haute tension.
DE112017002040T5 (de) Gemeinsame Blechkomponente zur Aufnahme von mehrfachen Leitungsgeometrien in einer elektrischen Maschine
EP3766599B1 (fr) Dispositif a bobine electromagnetique pour un rouleau agitateur electromagnetique d'une installation de coulee continue
DE2924037A1 (de) Dynamoelektrische maschine mit einem lamellenfoermigen statorkern
EP4275265A1 (fr) Procédé pour fabriquer un stator ainsi que stator
DE102011083577A1 (de) Elektrische Maschine mit Stator mit variablem Nutabstand
DE102006023493B4 (de) Mehrphasiges Wicklungsteil für einen Linearmotor oder Lineargenerator
EP3766600B1 (fr) Dispositif a bobine electromagnetique pour un rouleau agitateur electromagnetique d'une installation de coulee continue
EP1779499B1 (fr) Machine pourvue d'un enroulement d'excitation constitue de supraconducteurs a haute t<sb>c</sb> et situe dans un dispositif de retenue
EP1722998B1 (fr) Pole magnetique de vehicules a sustentation magnetique
DE69302807T2 (de) Induktoreinheit fuer einen elektrischen linearen asynchronmotor
EP3871803A1 (fr) Disposition des bobines électromagnétiques et rouleau électromagnétique pour une installation de casting continu
DE4137992A1 (de) Spulenanordnung, insbesondere primaerspulenanordnung fuer einen supraleitfaehigen linearen induktionsmotor
EP3183799B1 (fr) Pièce active d'une machine électrique
CH347571A (de) Dynamoelektrische Maschine
DE102018206512A1 (de) Elektrische Maschine und hybridelektrisches Luftfahrzeug
DE10033014A1 (de) Statorwicklung für eine elektrische Maschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210720

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220405

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1516610

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220915

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502020001654

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221207

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221208

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230109

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230107

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502020001654

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

26N No opposition filed

Effective date: 20230608

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230731

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230719

Year of fee payment: 4

Ref country code: FR

Payment date: 20230726

Year of fee payment: 4

Ref country code: DE

Payment date: 20230719

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220907

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230715

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230715