EP1829062B1 - Coil for producing a magnetic field - Google Patents

Coil for producing a magnetic field Download PDF

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Publication number
EP1829062B1
EP1829062B1 EP06792434A EP06792434A EP1829062B1 EP 1829062 B1 EP1829062 B1 EP 1829062B1 EP 06792434 A EP06792434 A EP 06792434A EP 06792434 A EP06792434 A EP 06792434A EP 1829062 B1 EP1829062 B1 EP 1829062B1
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EP
European Patent Office
Prior art keywords
winding
coil
reinforcing insert
connecting piece
plastic
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.)
Not-in-force
Application number
EP06792434A
Other languages
German (de)
French (fr)
Other versions
EP1829062A1 (en
Inventor
Stefan Remke
Thomas Braun
Jan Wiezoreck
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.)
Zenergy Power GmbH
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Zenergy Power GmbH
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Publication date
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Publication of EP1829062A1 publication Critical patent/EP1829062A1/en
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Publication of EP1829062B1 publication Critical patent/EP1829062B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
    • H01F6/065—Feed-through bushings, terminals and joints
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/327—Encapsulating or impregnating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S336/00—Inductor devices
    • Y10S336/01—Superconductive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S505/00—Superconductor technology: apparatus, material, process
    • Y10S505/725—Process of making or treating high tc, above 30 k, superconducting shaped material, article, or device
    • Y10S505/739—Molding, coating, shaping, or casting of superconducting material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S505/00—Superconductor technology: apparatus, material, process
    • Y10S505/825—Apparatus per se, device per se, or process of making or operating same
    • Y10S505/917—Mechanically manufacturing superconductor
    • Y10S505/924—Making superconductive magnet or coil

Definitions

  • the invention relates to a coil for generating a magnetic field with at least one made of a superconductor, cast in a plastic winding, wherein a winding arranged at the end of the winding end serves as a contact for an electrical conductor.
  • Coils with a winding made of a superconductor are used in motor, generator and magnet construction, if the advantages of the low resistance of cooled superconductors are to be exploited.
  • high-temperature superconductors which consist of a brittle composite of ceramic and metal, but even at room temperature and especially at lower temperatures can not absorb large tensile or shear forces.
  • superconductors lose their cooling at room temperature already low elasticity on.
  • the coil end is usually contacted by soldering a metallic or superconducting conductor. Tensile and shear forces transmitted to the soldered conductor can damage the winding, which can damage the winding in the worst case if the contact is handled carelessly.
  • Such coils are described, for example, in EP0472233 ,
  • the object of the invention is to provide coils with windings of superconductors, which allow a simple contact with a robust contact and where there is a reduced risk of damage to the winding.
  • the contact has an electrically conductive connector with a flat connected to the winding end footer and a head portion for connecting the conductor, wherein the foot area of the connecting piece at the end of the winding directly adjacent legs, which are covered in the radial direction of a cast in the plastic, the winding at least partially embracing reinforcement insert
  • the connection piece is stabilized against the winding by the cast in the plastic reinforcing insert. If necessary, forces acting on the connecting piece are transmitted over a large area by the reinforcing insert to the plastic covering the coil, whereby in particular the winding end is relieved of these forces.
  • the reinforcing insert complements the fitting completely surrounds the winding, whereby local compressive and tensile loads on the winding can be prevented.
  • the reinforcing insert and the connecting piece preferably form a self-contained strain relief.
  • the reinforcing insert of a winding surrounding ring such as in particular a prefabricated, sufficiently stable band or split ring body.
  • the foot region may have legs on both opposite transverse sides, as a result of which the foot region can abut extensively on the winding end and also the reinforcing insert can largely cover the legs at the end of the winding. These legs can protrude in the circumferential direction over the transverse sides of the connecting piece in the head area.
  • the reinforcing insert then covers both legs and extends along the circumference of an outer turn of the winding along one to the other leg, whereby a strapping of the winding is formed along the circumference. As a result of this strapping, the coil is protected against impact at the circumference of the winding.
  • two reinforcing inserts can be arranged transversely to the winding, which each cover one of the legs transversely and then laterally surround the winding on the front and rear sides.
  • the reinforcing inserts can then preferably a winding body, on which the winding is wound, pass through to fully encompass the winding.
  • the reinforcing insert may alternatively be attached to the winding body be such that the connector is supported on the reinforcing insert on the winding body.
  • the reinforcing insert in particular engages positively in at least one recess between the head region and the foot region, whereby the connecting piece is also stabilized.
  • the connecting piece can have on both lateral sides in each case a groove-shaped recess into which the reinforcing insert, if it extends along the circumference, encloses with both end faces or through which it engages. If two reinforcing inserts are arranged on the front and back transverse to the winding, they can laterally engage in the recesses. The reinforcing insert may additionally be clamped in the recesses.
  • the plastic is preferably a Elektroimoniagn ists- or a potting compound.
  • the casting or impregnation of the coil in plastic is preferably carried out by vacuum impregnation or in a vacuum impregnation process, wherein the plastic advantageously consists of a resin, in particular an epoxy resin.
  • the coil is preferably designed as a double-disc coil, which is formed by two juxtaposed, counter-wound and on the inner side winding into each other passing windings, so that both winding ends are arranged on the circumference and are each provided with a connection piece.
  • These double-disc coils also referred to as "double-pancake coils" have the advantage that the contacting takes place at the easily accessible circumference.
  • the two connecting pieces are expediently arranged parallel to one another and insulated from each other by a gap. In the gap may be further suitably arranged an insulating layer.
  • the winding is preferably made of a high-temperature superconductor, which has the advantage that the coil can be cooled with nitrogen - without being limited to it.
  • the winding is suitably wound from a strip conductor or a strip of strip conductors, preferably in the "powder-in-tube” technique or manufactured as a thin-film conductor.
  • a solder having a high melting temperature is preferably used.
  • a conductor can then be soldered to the head area with a solder of lower melting temperature, without melting the solder at the foot area can occur.
  • commercially available electronic solder can be used for the solder on the head area.
  • Fig. 1 schematically shows a coil 10 for generating a magnetic field with a wound on a tubular winding body 11 winding 12.
  • the winding 12 consists of a wound with superimposed turns band conductor, which is made in the "powder in tube” technique of a ceramic high temperature superconductor.
  • a thin-film conductor or a stack of thin-film conductors can be used.
  • a connecting piece 30 is used to make contact with the winding 12.
  • the block-shaped connecting piece 30 is made of copper and has at both in the circumferential direction or Wrapping direction facing transverse sides 30a, 30b between a foot portion 31 and a head portion 32 each have a slot-shaped recess 36, whereby at the foot portion 31, a short leg 33 on the transverse side 30a and a short leg 34 is formed on the transverse side 30b.
  • the foot region 31 is soldered to the longitudinal sides of the connection piece 30 on the circumference 13 of the winding 12.
  • Fig. 2 shows that the foot portion 31 thereby bears flat against a winding end 19 of the winding 12 and is secured by a soldering, not shown.
  • an electrically conductive lead 15 is soldered, which preferably consists of a normal conductor or another superconductor.
  • a reinforcing insert 14 On the circumference 13 of the winding 12 is located on a reinforcing insert 14, which extends from the transverse side 33 a of the fitting 30 along the circumference 13 to the other transverse side 33 b.
  • Fig. 2 shows that the reinforcing insert 14 engages in each case with their ends in the recesses 36 and thereby covers both legs 33, 34.
  • the winding 12 is cast together with the tubular winding body 11, the reinforcing insert 14 and the connecting piece 30 in epoxy resin 20.
  • the reinforcing insert 14 may consist of a reinforcing band or a ring with sufficient inherent rigidity and / or a fiber reinforcement.
  • the reinforcing insert may also consist of loose or bonded reinforcing fibers such as glass fibers in particular, which are molded into the plastic.
  • the reinforcing insert 14 and in the foot area partially covered by this connector 30 thereby form a self-contained strain relief for contacting.
  • the effect of the reinforcing insert 14 is particularly good, as this is the foot area 31 of the connecting piece 30 partially, namely in the region of both short legs 33, 34 overlap in the radial direction.
  • Fig. 3 shows a particularly preferred field of application of the invention with two interconnected, counter-wound windings 112a and 112b, thereby forming a so-called "double pancake" or double-disc coil 110.
  • the windings 112a, 112b are wound from a tape-shaped superconductor.
  • the windings 112a and 112b merge into each other on the outer periphery 116 of the winding body 111 via a common inner turn 112c.
  • On the outer circumference 113a of the winding 112a is a connecting piece 150 and on the outer circumference 113b of the winding 112b, a second connecting piece 130 is soldered, which is identical to the in Fig. 1 illustrated connection piece 30 are executed. To avoid repetition, here is the description of the in Fig. 1 and 2 referenced connector 30.
  • the two connecting pieces 130, 150 are arranged parallel to one another and next to one another and spaced apart from one another by an insulating gap 118.
  • the winding parts 112a and 112b are separated from each other by an insulating layer 117, which extends further into the gap 118 between the two Agrchluss publishede 130, 150.
  • the entire coil 110 is, after the terminals 130, 150 were soldered at the coil ends and the reinforcing inserts 113 a, 113 b were placed around the windings 112 a, 112 b, poured into epoxy resin 120, which also fills the gap 118 as additional insulation and the Side surfaces of the connecting pieces 130, 150 covered. Only the head sides 135 and 155 of the connectors are exposed by the epoxy resin 120 so as to be able to solder normal conductors in the coil 110 to the connectors 130, 150 for electrically contacting the coils 112a and 112b.
  • Fig. 4 shows a coil 210 with a made of copper connector 230 according to another embodiment, which is soldered to a large area on a winding 212 in the winding direction or circumferential direction over a head region 232 protruding legs 233, 234.
  • the connecting piece 230 is provided between the head region 232 and a foot region 231 with two slot-shaped recesses 236 into which a reinforcing insert 214 engages with its ends.
  • the winding 212, the reinforcing insert 214 and the terminal 230 are molded in epoxy resin 220.
  • the recesses 236 having transverse sides 230a and 230b of the head portion 232 are two S-shaped holding layers 237 and 238 from a cast also in the epoxy resin 220 glass fiber fleece, which partially overlap the head side 235 of the head portion 232, so that the head portion 232nd is stabilized by the holding layers 237, 238.
  • a lead 215 is soldered to the head side 235.
  • Fig. 5 shows a double-disc coil 310 having a first winding 312a and a second winding 312b of a ribbon-shaped superconductor, as in FIG Fig. 3 described, which are soldered to two fittings 330 and 350.
  • the connecting piece 350 is provided along its outer longitudinal side 350a with a slot-shaped recess 316a and the connecting piece 330 is provided on its outer longitudinal side 330b with a slot-shaped, extending in the winding direction recess 316b.
  • An annular reinforcing insert 314a is inserted into the recess 316a and an annular reinforcing insert 314b is inserted into the recess 316b.
  • the solid, optionally closed rings 314a, 314b enclose the windings 312a, 312b along their circumference and are cast with the windings 312a, 312b in an epoxy resin 320.
  • annular reinforcing inserts 314a, 314b fibers or fiber mats or the like could also be inserted in the lateral recesses 316a, 316b.
  • Fig. 6 shows on a coil 410, a winding 412 with a connector 430, similar to that in Fig. 4 is shown at the transverse sides with the foot portion 431 circumferentially extending legs 433, 434 is provided, which protrude beyond the transverse sides of the head portion 432.
  • the connecting piece 430 is provided with two slot-shaped recesses 436.
  • the one leg 434 is from a first transverse to the winding Covered 412 extending reinforcing insert 414a and the other leg 433 is covered by a likewise extending transversely to the winding 412 second reinforcing insert 414b.
  • the two reinforcing inserts 414a, 414b consist, for example, of a plurality of glass fiber strips which together surround the winding 412 and are cast with the connecting piece 430 and the winding 412 in a plastic 420. Both reinforcing inserts can in this case engage in or engage in an inner opening of a winding body, so that they fix the connecting piece 430 on both legs 433, 434 relative to the winding body in the radial direction.
  • the head portion 32, 232 of the connector 30, 230 protrudes radially by a portion over the reinforcing insert 14, 214 and the plastic 20, 220 embedding them.
  • the protruding in these embodiments portion could also be subsequently removed, for example, abraded or removed, so that it is preferably flush with the plastic, in which the reinforcing insert is poured, or it is already used during assembly a connector (not shown), which only has a short in the radial direction, over the legs or the foot region protruding head area, which in turn, after pouring or embedding in plastic, preferably flush with the plastic.
  • no recesses between the foot region and head region could then be formed for the engagement of the ends of the reinforcing inserts.

Abstract

The coil has a superconducting winding (12) encapsulated in plastics. One winding end (19) allows connection of an electrical wire (15). The connection comprises an electrical connection piece (30) with a foot region (31) which is connected flat against the winding end and with a head region (32) for connecting the wire. The foot region is partially covered in the radial direction by a reinforcement insert (14) which encloses the winding and is encapsulated in the plastics.

Description

Die Erfindung betrifft eine Spule zum Erzeugen eines Magnetfeldes mit wenigstens einer aus einem Supraleiter gefertigten, in einen Kunststoff eingegossenen Wicklung, wobei ein am Umfang der Wicklung angeordnetes Wicklungsende als eine Kontaktierung für einen elektrischen Leiter dient.The invention relates to a coil for generating a magnetic field with at least one made of a superconductor, cast in a plastic winding, wherein a winding arranged at the end of the winding end serves as a contact for an electrical conductor.

Spulen mit einer aus einem Supraleiter gefertigten Wicklung kommen im Motor-, Generator- und Magnetbau zum Einsatz, falls die Vorteile des geringen Widerstands von gekühlten Supraleitern ausgenutzt werden sollen. Häufig werden Hochtemperatur-Supraleiter eingesetzt, die aus einem spröden Komposit aus Keramik und Metall bestehen, aber selbst bei Zimmertemperatur und insbesondere bei tieferen Temperaturen keine großen Zug- oder Scherkräfte aufnehmen können. Außerdem verlieren Supraleiter durch die Kühlung ihre bei Zimmertemperatur bereits geringe Elastizität weiter. Bei der Montage der Spulen wird das Wicklungsende meist durch Anlöten eines metallischen oder supraleitenden Leiters kontaktiert. Auf den angelöteten Leiter übertragene Zug- und Querkräfte können die Wicklung beschädigen, wodurch bei einem unvorsichtigen Umgang mit der Kontaktierung die Wicklung im schlimmsten Fall zerstört werden kann. Solche Spulen werden zum Beispiel beschrieben in EP0472233 .Coils with a winding made of a superconductor are used in motor, generator and magnet construction, if the advantages of the low resistance of cooled superconductors are to be exploited. Often high-temperature superconductors are used, which consist of a brittle composite of ceramic and metal, but even at room temperature and especially at lower temperatures can not absorb large tensile or shear forces. In addition, superconductors lose their cooling at room temperature already low elasticity on. When mounting the coils, the coil end is usually contacted by soldering a metallic or superconducting conductor. Tensile and shear forces transmitted to the soldered conductor can damage the winding, which can damage the winding in the worst case if the contact is handled carelessly. Such coils are described, for example, in EP0472233 ,

Aufgabe der Erfindung ist es, Spulen mit Wicklungen aus Supraleitern zu schaffen, die bei einfacher Herstellung eine robuste Kontaktierung ermöglichen und bei denen ein verringertes Risiko der Beschädigung der Wicklung besteht.The object of the invention is to provide coils with windings of superconductors, which allow a simple contact with a robust contact and where there is a reduced risk of damage to the winding.

Diese Aufgabe wird entsprechend den kennzeichnenden Merkmalen des Patentanspruchs 1 erfindungsgemäß dadurch gelöst, dass die Kontaktierung ein elektrisch leitfähiges Anschlussstück mit einem flächig mit dem Wicklungsende verbundenen Fußbereich und einem Kopfbereich zum Anschließen des Leiters aufweist, wobei der Fußbereich des Anschlussstücks am Wicklungsende unmittelbar anliegende Schenkel aufweist, die in radialer Richtung von einer in den Kunststoff eingegossenen, die Wicklung zumindest teilweise umgreifenden Verstärkungseinlage überdeckt sind Dies hat den Vorteil, dass das Anschlussstücke gegenüber der Wicklung durch die in den Kunststoff eingegossene Verstärkungseinlage stabilisiert ist. Gegebenenfalls an dem Anschlussstück angreifende Kräfte werden durch die Verstärkungseinlage großflächig auf den die Spule umhüllenden Kunststoff übertragen, wodurch insbesondere das Wicklungsende von diesen Kräften entlastet ist.This object is achieved according to the characterizing features of claim 1 according to the invention in that the contact has an electrically conductive connector with a flat connected to the winding end footer and a head portion for connecting the conductor, wherein the foot area of the connecting piece at the end of the winding directly adjacent legs, which are covered in the radial direction of a cast in the plastic, the winding at least partially embracing reinforcement insert This has the advantage that the connection piece is stabilized against the winding by the cast in the plastic reinforcing insert. If necessary, forces acting on the connecting piece are transmitted over a large area by the reinforcing insert to the plastic covering the coil, whereby in particular the winding end is relieved of these forces.

Vorzugsweise umgreift die Verstärkungseinlage ergänzt mit dem Anschlussstück die Wicklung vollständig, wodurch lokale Druck- und Zugbelastungen an der Wicklung verhindert werden. Die Verstärkungseinlage und das Anschlussstück bilden vorzugsweise eine in sich geschlossene Zugentlastung. In einer vorteilhaften Ausführung besteht die Verstärkungseinlage aus einem die Wicklung umgreifenden Ring, wie insbesondere einem vorgefertigten, ausreichend stabilen Band oder geteilten Ringkörper.Preferably, the reinforcing insert complements the fitting completely surrounds the winding, whereby local compressive and tensile loads on the winding can be prevented. The reinforcing insert and the connecting piece preferably form a self-contained strain relief. In an advantageous embodiment, the reinforcing insert of a winding surrounding ring, such as in particular a prefabricated, sufficiently stable band or split ring body.

Gemäß einer vorteilhaften Ausgestaltung, kann der Fußbereich an beiden gegenüberliegenden Querseiten Schenkel aufweisen, wodurch der Fußbereich großflächig am Wicklungsende anliegen kann und auch die verstärkungseinlage die Schenkel an dem Wicklungsende großflächig überdecken kann. Diese Schenkel können in Umfangsrichtung über die Querseiten des Anschlussstücks im Kopfbereich hinausragen. In einer besonders vorteilhaften Ausgestaltung überdeckt die Verstärkungseinlage dann beide Schenkel und erstreckt sich am Umfang einer Außenwindung der Wicklung entlang von einem zum anderen Schenkel, wodurch eine Umreifung der Wicklung entlang des Umfangs entsteht. Durch diese Umreifung ist die Spule am Umfang der Wicklung vor Stößen geschützt. In einer alternativen Ausgestaltung können zwei Verstärkungseinlagen quer zur Wicklung angeordnet sein, die je einen der Schenkel quer überdecken und anschließend die Wicklung seitlich an Vorder- und Rückseite umgreifen. Die Verstärkungseinlagen können dann vorzugsweise einen wickelkörper, auf den die wicklung aufgewickelt ist, durchfassen, um die Wicklung vollständig zu umgreifen. Die Verstärkungseinlage kann alternativ an dem Wickelkörper befestigt sein, sodass das Anschlussstück über die Verstärkungseinlage an dem Wickelkörper abgestützt ist.According to an advantageous embodiment, the foot region may have legs on both opposite transverse sides, as a result of which the foot region can abut extensively on the winding end and also the reinforcing insert can largely cover the legs at the end of the winding. These legs can protrude in the circumferential direction over the transverse sides of the connecting piece in the head area. In a particularly advantageous embodiment, the reinforcing insert then covers both legs and extends along the circumference of an outer turn of the winding along one to the other leg, whereby a strapping of the winding is formed along the circumference. As a result of this strapping, the coil is protected against impact at the circumference of the winding. In an alternative embodiment, two reinforcing inserts can be arranged transversely to the winding, which each cover one of the legs transversely and then laterally surround the winding on the front and rear sides. The reinforcing inserts can then preferably a winding body, on which the winding is wound, pass through to fully encompass the winding. The reinforcing insert may alternatively be attached to the winding body be such that the connector is supported on the reinforcing insert on the winding body.

Unabhängig von der Anordnung der Verstärkungseinlage an der Wicklung ist es vorteilhaft, wenn die Verstärkungseinlage in wenigstens eine Ausnehmung zwischen dem Kopfbereich und dem Fußbereich insbesondere formschlüssig einfaßt, wodurch das Anschlussstück ebenfalls stabilisiert ist. Das Anschlussstück kann an beiden Querseiten jeweils eine nutförmige Ausnehmung aufweisen, in welche die Verstärkungseinlage, falls sie sich entlang des Umfangs erstreckt, mit beiden Stirnseiten einfasst oder durch welche sie hindurchgreift. Falls zwei Verstärkungseinlagen an der Vorder- und Rückseite quer zu der Wicklung angeordnet sind, können diese seitlich in die Ausnehmungen einfassen. Die Verstärkungseinlage kann zusätzlich in den Ausnehmungen festgeklemmt sein.Regardless of the arrangement of the reinforcing insert on the winding, it is advantageous if the reinforcing insert in particular engages positively in at least one recess between the head region and the foot region, whereby the connecting piece is also stabilized. The connecting piece can have on both lateral sides in each case a groove-shaped recess into which the reinforcing insert, if it extends along the circumference, encloses with both end faces or through which it engages. If two reinforcing inserts are arranged on the front and back transverse to the winding, they can laterally engage in the recesses. The reinforcing insert may additionally be clamped in the recesses.

Der Kunststoff ist vorzugsweise eine Elektroimprägnierungs- bzw. eine Vergussmasse. Das Eingießen bzw. Imprägnieren der Spule in Kunststoff erfolgt vorzugsweise durch Vakuum-Imprägnieren bzw. im Vakuum-Imprägnierungs-Verfahren, wobei der Kunststoff in vorteilhafter Weise aus einem Harz, insbesondere einem Epoxydharz, besteht. Die Spule ist vorzugsweise als Doppelscheibenspule ausgeführt, die durch zwei nebeneinander angeordnete, gegenläufig gewickelte und an der Wicklungsinnenseite ineinander übergehende Wicklungen gebildet ist, sodass beide Wicklungsenden am Umfang angeordnet sind und jeweils mit einem Anschlussstück versehen sind. Diese auch als "Doublepancake-Spulen" bezeichneten Doppelscheibenspulen haben den Vorteil, dass die Kontaktierung am leicht zugänglichen Umfang erfolgt. Die beiden Anschlussstücke sind zweckmäßig parallel zueinander und durch einen Spalt voneinander isoliert angeordnet. In dem Spalt kann weiter zweckmäßig eine Isolierschicht angeordnet sein.The plastic is preferably a Elektroimprägnierungs- or a potting compound. The casting or impregnation of the coil in plastic is preferably carried out by vacuum impregnation or in a vacuum impregnation process, wherein the plastic advantageously consists of a resin, in particular an epoxy resin. The coil is preferably designed as a double-disc coil, which is formed by two juxtaposed, counter-wound and on the inner side winding into each other passing windings, so that both winding ends are arranged on the circumference and are each provided with a connection piece. These double-disc coils, also referred to as "double-pancake coils", have the advantage that the contacting takes place at the easily accessible circumference. The two connecting pieces are expediently arranged parallel to one another and insulated from each other by a gap. In the gap may be further suitably arranged an insulating layer.

Die wicklung ist vorzugsweise aus einem Hochtemperatur-Supraleiter gefertigt, was den Vorteil hat, dass die Spule mit Stickstoff - ohne sich darauf einzuschränken- gekühlt werden kann. Die Wicklung ist zweckmäßig aus einem Bandleiter oder einer Schichtung aus Bandleitern gewickelt, der vorzugsweise in der "Pulver-im-Rohr"-Technik oder als Dünnschichtleiter gefertigt ist. Beim Verlöten des Fußbereichs mit dem Wicklungsende wird vorzugsweise ein Lot mit einer hohen Schmelztemperatur verwendet. Ein Leiter kann dann mit einem Lot niedrigerer Schmelztemperatur an den Kopfbereich angelötet werden, ohne dass ein Schmelzen des Lotes am Fußbereich auftreten kann. Für das Lot am Kopfbereich kann bspw. handelsübliches Elektroniklot verwendet werden.The winding is preferably made of a high-temperature superconductor, which has the advantage that the coil can be cooled with nitrogen - without being limited to it. The winding is suitably wound from a strip conductor or a strip of strip conductors, preferably in the "powder-in-tube" technique or manufactured as a thin-film conductor. When soldering the foot portion to the coil end, a solder having a high melting temperature is preferably used. A conductor can then be soldered to the head area with a solder of lower melting temperature, without melting the solder at the foot area can occur. For example, commercially available electronic solder can be used for the solder on the head area.

Weitere Vorteile und Ausgestaltungen der Erfindung ergeben sich aus der nachfolgenden Beschreibung von in der Zeichnung gezeigten Ausführungsbeispielen für erfindungsgemäße Spulen. In der Zeichnung zeigt:

Fig. 1
schematisch in Ansicht auf die Vorderseite eine er- findungsgemäße Spule mit einem Anschlussstück gemäß einem ersten Ausführungsbeispiel;
Fig. 2
in Schnittansicht ein Detail der Spule aus Fig. 1;
Fig. 3
einen Vertikalschnitt durch die obere Spulenhälfte einer Doppelscheibenspule mit daran angeordneten An- schlussstücken;
Fig. 4
eine Detailansicht ähnlich zu Fig. 2 mit einem An- schlussstück gemäß einem zweiten Ausführungsbei- spiel;
Fig. 5
einen Vertikalschnitt durch die obere Spulenhälfte einer Doppelscheibenspule mit einem dritten Ausfüh- rungsbeispiel eines Anschlussstücks; und
Fig. 6
eine Detailansicht einer Spule mit einem Anschluss- stück gemäß einem vierten Ausführungsbeispiel und einer quer zur Wicklung verlaufenden Verstärkungs- einlage.
Further advantages and embodiments of the invention will become apparent from the following description of embodiments shown in the drawings for inventive coils. In the drawing shows:
Fig. 1
schematically in front view of a coil according to the invention with a connecting piece according to a first embodiment;
Fig. 2
in section view a detail of the coil Fig. 1 ;
Fig. 3
a vertical section through the upper coil half of a double disc coil arranged thereon with connecting pieces;
Fig. 4
a detailed view similar to Fig. 2 with a connection piece according to a second embodiment;
Fig. 5
a vertical section through the upper coil half of a double-disc coil with a third embodiment of a connector; and
Fig. 6
a detail view of a coil with a connecting piece according to a fourth embodiment and a transverse to the winding reinforcing insert.

Fig. 1 zeigt schematisch eine Spule 10 zum Erzeugen eines Magnetfeldes mit einer auf einen rohrförmigen Wickelkörper 11 gewickelten Wicklung 12. Die Wicklung 12 besteht aus einem mit übereinanderliegenden Windungen gewickelten Bandleiter, der in der "Pulver im Rohr"-Technik aus einem keramischen Hochtemperatursupraleiter gefertigt ist. Hier kann auch ein Dünnschichtleiter oder ein Stapel von Dünnschichtleitern verwendet werden. Ein Anschlussstück 30 dient zur Kontaktierung der Wicklung 12. Das hier blockförmige Anschlussstück 30 besteht aus Kupfer und weist an beiden in Umfangsrichtung bzw.
Wickelrichtung weisenden Querseiten 30a, 30b zwischen einem Fußbereich 31 und einem Kopfbereich 32 jeweils eine schlitzförmige Ausnehmung 36 auf, wodurch am Fußbereich 31 ein kurzer Schenkel 33 an der Querseite 30a und ein kurzer Schenkel 34 an der Querseite 30b gebildet wird. Der Fußbereich 31 ist an den Längsseiten des Anschlussstücks 30 am Umfang 13 der Wicklung 12 angelötet. Fig. 2 zeigt, dass der Fußbereich 31 dabei an einem Wicklungsende 19 der Wicklung 12 flächig anliegt und durch eine nicht dargestellte Lötung befestigt ist. Am Kopfbereich 32 des Anschlussstücks 30 ist eine elektrisch leitfähige Zuleitung 15 angelötet, die vorzugsweise aus einem Normalleiter oder einem weiteren Supraleiter besteht. Fig. 1 schematically shows a coil 10 for generating a magnetic field with a wound on a tubular winding body 11 winding 12. The winding 12 consists of a wound with superimposed turns band conductor, which is made in the "powder in tube" technique of a ceramic high temperature superconductor. Here also a thin-film conductor or a stack of thin-film conductors can be used. A connecting piece 30 is used to make contact with the winding 12. The block-shaped connecting piece 30 is made of copper and has at both in the circumferential direction or
Wrapping direction facing transverse sides 30a, 30b between a foot portion 31 and a head portion 32 each have a slot-shaped recess 36, whereby at the foot portion 31, a short leg 33 on the transverse side 30a and a short leg 34 is formed on the transverse side 30b. The foot region 31 is soldered to the longitudinal sides of the connection piece 30 on the circumference 13 of the winding 12. Fig. 2 shows that the foot portion 31 thereby bears flat against a winding end 19 of the winding 12 and is secured by a soldering, not shown. At the head portion 32 of the connector 30, an electrically conductive lead 15 is soldered, which preferably consists of a normal conductor or another superconductor.

Am Umfang 13 der Wicklung 12 liegt eine Verstärkungseinlage 14 an, die sich von der Querseite 33a des Anschlussstücks 30 entlang des Umfangs 13 bis zu der anderen Querseite 33b erstreckt. Fig. 2 zeigt, dass die Verstärkungseinlage 14 dabei jeweils mit ihren Enden in die Ausnehmungen 36 einfasst und dadurch beide Schenkel 33, 34 überdeckt. Die Wicklung 12 ist zusammen mit dem rohrförmigen Wickelkörper 11, der Verstärkungseinlage 14 und dem Anschlussstück 30 in Epoxyd-Harz 20 eingegossen. Die Verstärkungseinlage 14 kann aus einem Verstärkungsband oder einem Ring mit ausreichender Eigensteifigkeit und/oder einer Faserverstärkung bestehen. Die Verstärkungseinlage kann jedoch auch aus losen oder gebundenen Verstärkungsfasern wie insbesondere Glasfasern bestehen, die mit in den Kunststoff eingegossen sind. Die Verstärkungseinlage 14 und das im Fußbereich partiell von dieser überdeckte Anschlussstück 30 bilden dadurch eine in sich geschlossene Zugentlastung für die Kontaktierung. Die Wirkung der Verstärkungseinlage 14 ist besonders gut, da diese den Fußbereich 31 des Anschlussstücks 30 partiell, nämlich im Bereich beider kurzer Schenkel 33, 34 in Radialrichtung überdecken.On the circumference 13 of the winding 12 is located on a reinforcing insert 14, which extends from the transverse side 33 a of the fitting 30 along the circumference 13 to the other transverse side 33 b. Fig. 2 shows that the reinforcing insert 14 engages in each case with their ends in the recesses 36 and thereby covers both legs 33, 34. The winding 12 is cast together with the tubular winding body 11, the reinforcing insert 14 and the connecting piece 30 in epoxy resin 20. The reinforcing insert 14 may consist of a reinforcing band or a ring with sufficient inherent rigidity and / or a fiber reinforcement. However, the reinforcing insert may also consist of loose or bonded reinforcing fibers such as glass fibers in particular, which are molded into the plastic. The reinforcing insert 14 and in the foot area partially covered by this connector 30 thereby form a self-contained strain relief for contacting. The effect of the reinforcing insert 14 is particularly good, as this is the foot area 31 of the connecting piece 30 partially, namely in the region of both short legs 33, 34 overlap in the radial direction.

Fig. 3 zeigt ein insbesondere bevorzugtes Anwendungsgebiet der Erfindung mit zwei miteinander verbundenen, gegenläufig gewickelten Wicklungen 112a und 112b, die dabei eine sogenannte "Doublepancake"- oder Doppelscheibenspule 110 bilden. Die Wicklungen 112a, 112b sind aus einem bandförmigen Supraleiter gewickelt. Die Wicklungen 112a und 112b gehen am Außenumfang 116 des Wickelkörpers 111 über eine gemeinsame innere Windung 112c ineinander über. Am Außenumfang 113a der Wicklung 112a ist ein Anschlussstück 150 und am Außenumfang 113b der Wicklung 112b ist ein zweites Anschlussstück 130 angelötet, die baugleich zu dem in Fig. 1 dargestellten Anschlussstück 30 ausgeführt sind. Um Wiederholungen zu vermeiden, sei hier auf die Beschreibung des in Fig. 1 und 2 dargestellten Anschlussstücks 30 verwiesen. Fig. 3 shows a particularly preferred field of application of the invention with two interconnected, counter-wound windings 112a and 112b, thereby forming a so-called "double pancake" or double-disc coil 110. The windings 112a, 112b are wound from a tape-shaped superconductor. The windings 112a and 112b merge into each other on the outer periphery 116 of the winding body 111 via a common inner turn 112c. On the outer circumference 113a of the winding 112a is a connecting piece 150 and on the outer circumference 113b of the winding 112b, a second connecting piece 130 is soldered, which is identical to the in Fig. 1 illustrated connection piece 30 are executed. To avoid repetition, here is the description of the in Fig. 1 and 2 referenced connector 30.

Die beiden Anschlussstücke 130, 150 sind parallel zueinander und nebeneinander angeordnet und um einem isolierenden Spalt 118 voneinander beabstandet. Die Wicklungsteile 112a und 112b sind durch eine Isolierschicht 117 voneinander getrennt, die sich weiter in den Spalt 118 zwischen die beiden Agrchlussstücke 130, 150 erstreckt. Die ganze Spule 110 ist, nachdem die Anschlussstücke 130, 150 an den Wicklungsenden angelötet wurden und die verstärkungseinlagen 113a, 113b um die Wicklungen 112a, 112b gelegt wurden, in Epoxyd-Harz 120 eingegossen, das als zusätzliche Isolierung auch den Spalt 118 füllt sowie die Seitenflächen der Anschlussstücke 130, 150 bedeckt. Nur die Kopfseiten 135 und 155 der Anschlussstücke sind von dem EpoxydHarz 120 freigelegt, um bei der Spule 110 Normalleiter an die Anschlussstücke 130, 150 zur elektrischen Kontaktierung der Wicklungen 112a und 112b anlöten zu können.The two connecting pieces 130, 150 are arranged parallel to one another and next to one another and spaced apart from one another by an insulating gap 118. The winding parts 112a and 112b are separated from each other by an insulating layer 117, which extends further into the gap 118 between the two Agrchlussstücke 130, 150. The entire coil 110 is, after the terminals 130, 150 were soldered at the coil ends and the reinforcing inserts 113 a, 113 b were placed around the windings 112 a, 112 b, poured into epoxy resin 120, which also fills the gap 118 as additional insulation and the Side surfaces of the connecting pieces 130, 150 covered. Only the head sides 135 and 155 of the connectors are exposed by the epoxy resin 120 so as to be able to solder normal conductors in the coil 110 to the connectors 130, 150 for electrically contacting the coils 112a and 112b.

Fig. 4 zeigt eine Spule 210 mit einem aus Kupfer gefertigten Anschlussstück 230 gemäß einem weiteren Ausführungsbeispiel, das großflächig an einer Wicklung 212 mit in Wickelrichtung bzw. Umfangsrichtung über einen Kopfbereich 232 herausragenden Schenkeln 233, 234 angelötet ist. Durch die langen Schenkel 233, 234 ist das Anschlussstück 230 sehr gut leitend mit der Wicklung 212 verbunden. Das Anschlussstück 230 ist zwischen dem Kopfbereich 232 und einem Fußbereich 231 mit zwei schlitzförmigen Ausnehmungen 236 versehen, in die eine Verstärkungseinlage 214 mit ihren Enden eingreift. Die Wicklung 212, die Verstärkungseinlage 214 und das Anschlussstück 230 sind in Epoxyd-Harz 220 eingegossen. An den die Ausnehmungen 236 aufweisenden Querseiten 230a und 230b des Kopfbereichs 232 liegen zwei S-förmige Haltelagen 237 und 238 aus einem ebenfalls in das Epoxyd-Harz 220 eingegossenen Glasfaservlies an, welche die Kopfseite 235 des Kopfbereichs 232 partiell übergreifen, sodass auch der Kopfbereich 232 durch die Haltelagen 237, 238 stabilisiert ist. An die Kopfseite 235 ist eine Zuleitung 215 angelötet. Fig. 4 shows a coil 210 with a made of copper connector 230 according to another embodiment, which is soldered to a large area on a winding 212 in the winding direction or circumferential direction over a head region 232 protruding legs 233, 234. By the long legs 233, 234 is the connector 230 very good conductively connected to the winding 212. The connecting piece 230 is provided between the head region 232 and a foot region 231 with two slot-shaped recesses 236 into which a reinforcing insert 214 engages with its ends. The winding 212, the reinforcing insert 214 and the terminal 230 are molded in epoxy resin 220. At the recesses 236 having transverse sides 230a and 230b of the head portion 232 are two S-shaped holding layers 237 and 238 from a cast also in the epoxy resin 220 glass fiber fleece, which partially overlap the head side 235 of the head portion 232, so that the head portion 232nd is stabilized by the holding layers 237, 238. To the head side 235, a lead 215 is soldered.

Fig. 5 zeigt eine Doppelscheibenspule 310 mit einer ersten Wicklung 312a und einer zweiten Wicklung 312b aus einem bandförmigen Supraleiter, wie in Fig. 3 beschrieben, die mit zwei Anschlussstücken 330 und 350 verlötet sind. Das Anschlussstück 350 ist entlang seiner außenliegenden Längsseite 350a mit einer schlitzförmigen Ausnehmung 316a versehen und das Anschlussstück 330 ist an seiner außenliegenden Längsseite 330b mit einer schlitzförmigen, in Wickelrichtung erstreckenden Ausnehmung 316b versehen. Eine ringförmige Verstärkungseinlage 314a ist in die Ausnehmung 316a eingesetzt und eine ringförmige Verstärkungseinlage 314b ist in die Ausnehmung 316b eingesetzt. Die massiven, gegebenenfalls geschlossen ausgeführten Ringe 314a, 314b umschließen die Wicklungen 312a, 312b entlang ihres Umfangs und sind dabei mit den Wicklungen 312a, 312b in ein Epoxyd-Harz 320 eingegossen. Anstelle ringförmiger Verstärkungseinlagen 314a, 314b könnten auch Fasern oder Fasermatten oder dergleichen in die seitlichen Ausnehmungen 316a, 316b eingefügt sein. Fig. 5 shows a double-disc coil 310 having a first winding 312a and a second winding 312b of a ribbon-shaped superconductor, as in FIG Fig. 3 described, which are soldered to two fittings 330 and 350. The connecting piece 350 is provided along its outer longitudinal side 350a with a slot-shaped recess 316a and the connecting piece 330 is provided on its outer longitudinal side 330b with a slot-shaped, extending in the winding direction recess 316b. An annular reinforcing insert 314a is inserted into the recess 316a and an annular reinforcing insert 314b is inserted into the recess 316b. The solid, optionally closed rings 314a, 314b enclose the windings 312a, 312b along their circumference and are cast with the windings 312a, 312b in an epoxy resin 320. Instead of annular reinforcing inserts 314a, 314b, fibers or fiber mats or the like could also be inserted in the lateral recesses 316a, 316b.

Fig. 6 zeigt an einer Spule 410 eine Wicklung 412 mit einem Anschlussstück 430, das ähnlich wie das in Fig. 4 gezeigte Anschlussstück an den Querseiten mit den Fußbereich 431 in Umfangsrichtung verlängernden Schenkeln 433, 434 versehen ist, die über die Querseiten des Kopfbereichs 432 hinausragen. Oberhalb der Schenkel 433, 434 ist das Anschlussstück 430 mit zwei schlitzförmigen Ausnehmungen 436 versehen. Der eine Schenkel 434 ist von einer ersten quer zur Wicklung 412 verlaufenden Verstärkungseinlage 414a überdeckt und der andere Schenkel 433 ist von einer ebenfalls quer zur Wicklung 412 verlaufenden zweiten Verstärkungseinlage 414b überdeckt. Die beiden Verstärkungseinlagen 414a, 414b bestehen beispielweise aus mehreren Glasfaserstreifen, die zusammen die Wicklung 412 umgreifen und mit dem Anschlussstück 430 und der Wicklung 412 in einen Kunststoff 420 eingegossen sind. Beide Verstärkungseinlagen können hierbei in eine Innenöffnung eines Wickelkörpers eingreifen oder diesen durchfassen, sodass sie das Anschlussstück 430 an beiden Schenkeln 433, 434 relativ zum Wickelkörper in Radialrichtung festlegen. Fig. 6 shows on a coil 410, a winding 412 with a connector 430, similar to that in Fig. 4 is shown at the transverse sides with the foot portion 431 circumferentially extending legs 433, 434 is provided, which protrude beyond the transverse sides of the head portion 432. Above the legs 433, 434, the connecting piece 430 is provided with two slot-shaped recesses 436. The one leg 434 is from a first transverse to the winding Covered 412 extending reinforcing insert 414a and the other leg 433 is covered by a likewise extending transversely to the winding 412 second reinforcing insert 414b. The two reinforcing inserts 414a, 414b consist, for example, of a plurality of glass fiber strips which together surround the winding 412 and are cast with the connecting piece 430 and the winding 412 in a plastic 420. Both reinforcing inserts can in this case engage in or engage in an inner opening of a winding body, so that they fix the connecting piece 430 on both legs 433, 434 relative to the winding body in the radial direction.

Bei den in den Figuren, insbesondere in den Figuren 2 und 4 dargestellten Ausführungsbeispielen ragt der Kopfbereich 32, 232 des Anschlussstücks 30, 230 um ein Teilstück radial über die Verstärkungseinlage 14, 214 und den diese einbettenden Kunststoff 20, 220 hinaus. Der bei diesen Ausführungsbeispielen überstehende Teilbereich könnte auch nachträglich entfernt, z.B. abgeschliffen oder abgetragen werden, so dass er vorzugsweise bündig mit dem Kunststoff, in den die verstärkungseinlage eingegossen ist, abschließt, oder es wird bereits bei der Montage ein Anschlussstück (nicht gezeigt) verwendet, das nur einen in Radialrichtung kurzen, über die Schenkel bzw. den Fußbereich überstehendes Kopfbereich hat, der nach eingießen bzw. einbetten in Kunststoff wiederum vorzugsweise bündig mit dem Kunststoff abschließt. Bei dieser Ausgestaltung könnten dann auch keine Ausnehmungen zwischen Fußbereich und Kopfbereich für den Eingriff der Enden der Verstärkungseinlagen ausgebildet sein.In the in the figures, in particular in the Figures 2 and 4 illustrated embodiments, the head portion 32, 232 of the connector 30, 230 protrudes radially by a portion over the reinforcing insert 14, 214 and the plastic 20, 220 embedding them. The protruding in these embodiments portion could also be subsequently removed, for example, abraded or removed, so that it is preferably flush with the plastic, in which the reinforcing insert is poured, or it is already used during assembly a connector (not shown), which only has a short in the radial direction, over the legs or the foot region protruding head area, which in turn, after pouring or embedding in plastic, preferably flush with the plastic. In this embodiment, no recesses between the foot region and head region could then be formed for the engagement of the ends of the reinforcing inserts.

Claims (17)

  1. A coil (10) for producing a magnetic field, having at least one winding (12, 112a, 112b, 212, 312a, 312b, 412), which is manufactured from a superconductor and is encapsulated in a plastic, with a winding end (19) which is arranged on the circumference (13, 113a, 113b) of the winding (12, 112a, 112b, 212, 312a, 312b, 412) being used as a contact for an electrical conductor (15, 215), characterized in that the contact has an electrically conductive connecting piece (30, 130, 150, 230, 330, 350) with a foot area (31, 131, 231, 431), which is connected over an area to the winding end (19), and with a head area (32, 232, 432) for connection of the conductor (15, 215), with the foot area (31, 131, 231, 431) of the connecting piece (30, 130, 150, 230, 330, 350) has limbs (33, 34, 233, 234, 433, 434), which rest directly on the winding end and which are covered in the radial direction by a reinforcing insert (14, 214, 314a, 314b, 414a, 414b) which is encapsulated in the plastic (20, 120, 220, 320) and at least partially surrounds the winding (12, 112a, 112b, 212, 312a, 312b, 412).
  2. The coil as claimed in claim 1, characterized in that the reinforcing insert (14, 214) together with the connecting piece (30, 230) completely surrounds the winding (12, 212).
  3. The coil as claimed in claim 1 or 2, characterized in that the reinforcing insert (14, 214, 314a, 314b, 414a, 414b) and the connecting piece (30, 130, 150, 230, 330, 350) form an intrinsically closed strain relief means.
  4. The coil as claimed in one of claims 1 to 3, characterized in that the reinforcing insert (314a, 314b) comprises a ring surrounding the winding (312a, 312b) .
  5. The coil as claimed in one of claims 1 to 4, characterized in that the limbs (33, 34, 233, 234, 433, 434) are arranged on two opposite side faces of the foot area (31).
  6. The coil as claimed in claim 5, characterized in that the limbs (233, 234, 433, 434) project beyond the head area (232, 432) in the circumferential direction.
  7. The coil as claimed in claim 5 or 6, characterized in that the reinforcing insert (14, 214) covers both limbs (33, 34, 233, 234) and extends from one limb to the other (34, 33, 234, 233) along the circumference (13, 213) of an outer turn of the winding (12, 212).
  8. The coil as claimed in claim 5 or 6, characterized in that each limb (434, 433) is covered at the side by a reinforcing insert (414a, 414b), which extends along a front face and a rear face of the winding (412) and preferably passes through, or engages in, a winding inner face or a winding former.
  9. The coil as claimed in one of claims 1 to 8, characterized in that the reinforcing insert (14, 214, 314a, 314b, 414a, 414b) engages in at least one recess (36, 236, 316a, 316b, 436) between the head area (32, 232, 432) and the foot area (31, 231, 431).
  10. The coil as claimed in one of claims 5 to 9, characterized in that the connecting piece (30, 230, 430) has a recess (36, 236, 436) in the form of a groove on both side faces (230a, 230b), in which the reinforcing insert (14, 214, 414a, 414b) engages and/or is locked in an interlocking manner, and preferably is fixed, firmly clamped or adhesively bonded in both recesses.
  11. The coil as claimed in one of claims 1 to 10, characterized in that the reinforcing insert (14, 214, 414a, 414b) is fiber-reinforced, in particular glass-fiber-reinforced, and/or the process of encapsulation of the plastic (20, 120, 220, 320, 420) is carried out by vacuum impregnation, and/or the plastic (20, 120, 220, 320, 420) is composed of a resin, in particular an epoxy resin.
  12. The coil as claimed in one of claims 1 to 11, characterized by two windings (112a, 112b, 312a, 312b) which are arranged alongside one another, are wound in opposite senses and are connected to the winding inner face, in order to form a double-disk coil (110, 310) whose two winding ends are arranged on the circumference (113a, 113b, 313a, 313b) and are each provided with a connecting piece (130, 150, 330, 350).
  13. The coil as claimed in claim 12, characterized in that the two connecting pieces (130, 150, 330, 350) are arranged parallel to one another, and isolated from one another by a gap (118, 318), wherein preferably, an isolating layer (117) is arranged in the gap (118).
  14. The coil as claimed in one of claims 1 to 13, characterized in that the foot area (31) is soldered over an area to the winding end (19), wherein preferably, the foot area (31, 131, 231, 431) is soldered using a solder with a high melting temperature, which is preferably higher than a melting temperature of a solder which is used to solder the conductor.
  15. The coil as claimed in one of claims 1 to 14, characterized in that the winding (12, 112a, 112b, 212, 312a, 312b, 412) is manufactured from a high-temperature superconductor, and/or the winding (12, 112a, 112b, 212, 312a, 312b, 412) is wound from a ribbon conductor, which is preferably manufactured using the "powder in tube" technique, or in the form of a thin-film conductor.
  16. The coil as claimed in one of claims 1 to 15, characterized in that the head area of the connecting piece ends flush in the radial direction with the circumference of the coil or with the plastic in which the reinforcing insert is encapsulated.
  17. The coil as claimed in one of claims 1 to 16, characterized in that the limbs (33, 34, 233, 234, 433, 434), which are covered by the reinforcing insert, are encapsulated in the plastic (20, 120, 220, 320) and/or that the connecting piece is in the form of a block.
EP06792434A 2005-11-02 2006-10-18 Coil for producing a magnetic field Not-in-force EP1829062B1 (en)

Applications Claiming Priority (2)

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DE102005052602A DE102005052602B3 (en) 2005-11-02 2005-11-02 Coil for producing magnetic field, e.g. for motor or generator, has reinforcement insert enclosing superconducting winding and enclosed in plastics
PCT/EP2006/010038 WO2007051525A1 (en) 2005-11-02 2006-10-18 Coil for producing a magnetic field

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EP1829062B1 true EP1829062B1 (en) 2011-02-09

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DE102019211478A1 (en) * 2019-07-31 2021-02-04 Bruker Switzerland Ag Magnet coil section with integrated joints, especially HTS-LTS joints, and associated magnet arrangement
CN113257514B (en) * 2021-05-28 2021-10-26 潍坊新力超导磁电科技有限公司 Full-automatic plug-in current lead device

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NZ568752A (en) 2010-01-29
AU2006310844A1 (en) 2007-05-10
DE102005052602B3 (en) 2007-03-08
JP2009515325A (en) 2009-04-09
KR20080066698A (en) 2008-07-16
ATE498185T1 (en) 2011-02-15
CN101300647B (en) 2011-06-08
US7843292B2 (en) 2010-11-30
KR101050210B1 (en) 2011-07-19
WO2007051525A1 (en) 2007-05-10
CA2625952A1 (en) 2007-05-10
CN101300647A (en) 2008-11-05
AU2006310844B2 (en) 2009-11-19
US20090140831A1 (en) 2009-06-04
EP1829062A1 (en) 2007-09-05

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