EP2561521B1 - Verbesserte spule zur erzeugung eines starken magnetfeldes und verfahren zu herstellung einer derartigen spule - Google Patents

Verbesserte spule zur erzeugung eines starken magnetfeldes und verfahren zu herstellung einer derartigen spule Download PDF

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Publication number
EP2561521B1
EP2561521B1 EP11714783.5A EP11714783A EP2561521B1 EP 2561521 B1 EP2561521 B1 EP 2561521B1 EP 11714783 A EP11714783 A EP 11714783A EP 2561521 B1 EP2561521 B1 EP 2561521B1
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EP
European Patent Office
Prior art keywords
removal
coil
indentation
turn
turns
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EP11714783.5A
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English (en)
French (fr)
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EP2561521A1 (de
Inventor
François DEBRAY
Jean Dumas
Rolf Pfister
Christophe Trophime
Jean-Marc Tudela
Nadine Vidal
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Centre National de la Recherche Scientifique CNRS
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Centre National de la Recherche Scientifique CNRS
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    • 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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H01F7/202—Electromagnets for high magnetic field strength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/04—Cooling
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor

Definitions

  • the present invention relates to a coil adapted to generate a magnetic field particularly suitable for the generation of intense magnetic fields and / or for withstanding significant mechanical forces and a method of manufacturing said coil.
  • magnets consisting of one or more coils crossed by an intense electric current, said coils being cooled.
  • the said coils may consist of cylindrical tubes obtained in a conductive or superconductive material and cut along a generally helical cut line, with a constant pitch or not, to form turns.
  • NMR machines usually have a tunnel-like structure with a central space reserved for the patient and an annular structure which integrates on the one hand means for creating in the central observation space a homogeneous and intense main magnetic field and on the other hand radiofrequency excitation means and radiofrequency signal processing reemitted by the body of the patient placed in the central observation space, in response to the excitation sequences.
  • these machines also comprise so-called gradient coils for superimposing on the intense homogeneous field additional magnetic fields the value of which depends on the spatial coordinates of their place of application.
  • the document US 2,592,802 discloses an induction coil consisting of a tube obtained in a conductive material and cut along several generally helicoidal lines to form turns which are separated by a vertical portion ensuring a separation between the turns. Said separation part is cut to form a pair of spacing members on either side of a cylindrical hole in which is advantageously inserted a rod obtained in an insulating material, this rod serving as a spacer to avoid any contact between the turns.
  • EP 0146494 discloses an induction coil made of incomplete annular cutouts in a cylindrical tube, said incomplete annular cutouts being connected by two vertical cuts. This type of induction coil is intended to allow the displacement of the spacers in the nuclear reactors and is not intended to receive high intensity currents for the formation of intense fields.
  • the document US 3,466,743 discloses a coil made of a tube obtained in a conductive material and cut along a generally helicoidal line to form turns, said turns passing through holes initially made along the tube, the cutting line and / or the holes being filled with an insulating material to prevent any deformation when the coil is traversed by currents of very high intensities, but also to maintain a separation between the turns.
  • an insulating spacer is positioned at a hole, the spacer has larger dimensions than the hole to completely fill the hole and to separate the adjacent turns.
  • the magnetic field gradient coils or generating an intense magnetic field are subjected to intense electromagnetic forces that induce mechanical forces leading to a deformation of the turns of the coil.
  • the deformation of the turns can induce a lack of reliability of the machine and / or an inhomogeneity of the detrimental magnetic field for the realization of good quality imaging.
  • This is how it was proposed in the application WO 2009/053420 published on April 30, 2009 to use coils made of a tube obtained in a conductive material and cut along a generally helical line to form a plurality of turns, wherein at least one turn comprises at least one boss extending in line with a correspondingly shaped depression formed in an adjacent turn.
  • Such a configuration is advantageous in that it makes it possible to recover the mechanical forces induced by the electromagnetic forces and the mechanical forces of thermal origin.
  • the coil structure can be permanently cooled, in particular by the circulation of a cooling fluid, preferably a cryogenic fluid (nitrogen-based, for example). helium or hydrogen for example).
  • a cooling fluid preferably a cryogenic fluid (nitrogen-based, for example). helium or hydrogen for example).
  • This cooling must also be as homogeneous as possible in the structure. Such cooling is particularly useful to compensate for the thermal increase experienced by the structure in case of transit or resistive transition ("quench" in English).
  • One of the aims of the invention is therefore to overcome all these drawbacks by proposing a coil or a set of coils suitable for generating an intense magnetic field, in particular for forming superconducting magnets, and a method for manufacturing said coil of simple design and inexpensive.
  • an object of the present invention is to provide a coil or a set of coils adapted to be thermally controlled and simple to manufacture, and preferably providing a recovery of the mechanical forces induced on the coils of the coils by the electromagnetic forces and / or mechanical forces of thermal origin.
  • a method of manufacturing a coil capable of generating a so-called intense field magnetic field according to claim 1. More specifically, when an insulating material is positioned between the coil comprising the recess by removal of material and an adjacent turn, said indentation recess is spared in the ridge so that it forms with the insulating material a passage between the inside and the outside of the tube when the coil is constrained.
  • the coil according to the invention will advantageously be used to form a magnet for intense or homogeneous field, such as for example a superconducting magnet.
  • Such a coil may also be used as a solenoid gradient coil of a nuclear magnetic resonance machine.
  • the coil 1 comprises a tube 2, preferably generally hollow cylindrical, in which turns 3 have been formed by cutting, by any appropriate means, along a cutting line 4, preferably helical, said tube 2 being obtained from a material electrically conductive, such as metals or preferably a massive superconductor (such as Bismuth alloys or compounds of Ytrium or MgB2 for example) and said coil optionally comprising an insulating material filling the cutting line 4 in a well-known manner by the skilled person.
  • a material electrically conductive such as metals or preferably a massive superconductor (such as Bismuth alloys or compounds of Ytrium or MgB2 for example) and said coil optionally comprising an insulating material filling the cutting line 4 in a well-known manner by the skilled person.
  • the tube 2 provided with turns 3 can constitute the coil 1 as such.
  • the tube with the turns constitutes a support for a coil, this support + coil assembly forming said coil.
  • the winding may for example be formed of a tape or a superconducting wire (consisting for example of an alloy of NbTi, Nb3Sn, Nb3Al, or YBaCuO type) surrounding the cut tube. spiral.
  • the tube serves as a mechanical support for the tape and is further used in the thermal regulation of the superconducting magnet.
  • the tape or the superconducting wire is fixed in abutment on the inner face of the helically cut tube.
  • the coil may consist of a plurality of tubes 2.
  • At least one recess 10 is formed in the edge of at least one of the turns 3, such a recess being provided to form an opening, that is to say a passage or channel, between the 2.
  • the recess 10 alone forms the opening, that is to say the passage or channel, between the inside and the outside of the tube 2, when the coil is constrained but also when it is not.
  • the recess 10 corresponds to a removal of material in the tube 2.
  • the recess 10 does not comprise a corresponding shape formed in the edge of the coil adjacent to the turn comprising said recess. This removal of material constituting the recess 10 thus makes it possible to create an opening through the coil irrespective of the position of the turns relative to each other, that is to say whether they are constrained or not relative to one another. to others, that an element (such as an insulating material) is interposed or not between the adjacent turns.
  • the passage thus formed between the inside and the outside of the tube makes it possible to circulate a cooling fluid through the coil, such as, for example, water or a cryogenic fluid (eg nitrogen-based fluid). helium or hydrogen).
  • a cooling fluid such as, for example, water or a cryogenic fluid (eg nitrogen-based fluid). helium or hydrogen).
  • a cryogenic fluid eg nitrogen-based fluid. helium or hydrogen.
  • Such a cooling possibility is particularly advantageous for providing the heat transfer necessary to compensate for any thermal increase experienced by a superconducting coil in the event of transit or transition from the superconducting state to the resistive state ("quench" in English).
  • the fact of being able to thermally regulate the coil by the passage of cooling fluid between the inside and the outside of the tube is also particularly advantageous for reducing the mechanical deformations that may be of thermal origin.
  • the recess or recesses are formed in the region of the edges of the turns located opposite the insulating material.
  • this insulating material forms a barrier preventing the circulation of the heat transfer fluid between two adjacent turns, and this results in a local heating present in the normal operation of resistive magnets and in the case of a "quench" for a superconductor.
  • the recess 10 forms with the insulating material a passage between the inside and the outside of the tube 2 when the coil is constrained. The formation of a recess facing the insulating material therefore makes it possible to thermally regulate the coil at said insulating material through the cooling fluid passage, so as to avoid local heating.
  • the recesses formed in the ridges of each of the turns may have any shape, for example semicircular, triangular, square, rectangular, trapezoidal, or any other shape to create a passage for a cooling fluid. It should be noted that the shape and the size of the recess will be optimized to allow the passage of the cooling fluid and to control its flow velocity while guaranteeing the physical properties (especially mechanical and electrical) of the turns (taking into account for example the minimum width of the turns).
  • a plurality of turns 3 of the coil 1 comprises a recess 10 facing a complementary recess 11 formed in an adjacent turn 3, so that the cooperation of these recesses (10, 11 ) forms the opening between the inside and the outside of the tube 2 for the passage of a cooling fluid.
  • Complementary recess means a recess with a similar shape, that is, a recess with similar removal of material.
  • the opening between the inside and the outside of the tube 2 comprises, when the coil is constrained, two passages formed by the insulating material and respectively the recess 10 and the complementary recess 11.
  • Such an embodiment is particularly preferred when the width of the turns must remain low, which allows to distribute the size of the opening on two adjacent turns, and therefore avoids too much weaken the turns at the recesses.
  • the recesses formed in several adjacent turns may advantageously have an angular offset.
  • each turn 3 is constant; however, the width of all or part of the turns may be variable, the width of the space between two adjacent turns being preferably constant including the recesses.
  • the turns 3 are preferably formed in a generally cylindrical tube 2 by cutting along a helical cutting line 4.
  • a plurality of turns 3 of the coil 1 comprises a boss 5 extending in line with a recess 6 of corresponding shape formed in an adjacent turn 3 making it possible to take up the mechanical forces induced by the electromagnetic couples on the turns 3 when they are traversed by a current of strong intensity.
  • a recess 10 in the edge of the turn 3 at the boss-shaped profile 5 and optionally but preferred, a complementary recess 11 in the edge of the turn 3 at the level of the boss. 6.
  • Each recess is formed in the boss-shaped profile of a turn so as to face the complementary recess formed in the hollow-shaped profile of the adjacent coil. In this way, when the boss 5 extends to the right of the corresponding recess 6, the recesses (10, 11) cooperate to form a passage or channel between the inside and outside of the tube, which can be used to the passage of the cooling fluid.
  • the fact of placing the recesses at the bosses and recesses is particularly advantageous since it makes it possible to machine said recesses concomitantly with the corresponding bosses and recesses (for example by a wire cutting method by electroerosion), and does not come to complicate the machining process of the coil, while greatly improving the thermal properties of said coil.
  • all the bosses 5 and the recesses 6 of the turns 3 are generally aligned along a longitudinal straight line.
  • bosses 5 of two adjacent turns can be angularly offset.
  • the upper part of the coil 1, arbitrarily represented vertically on the figure 2 , has a plurality of bosses 5 and recesses 6 whose concavity is oriented in the same direction towards the lower end of said coil 1.
  • the lower part of the coil 1 also comprises a plurality of bosses 5 and recesses 6 whose concavity is oriented in the same direction, for example towards the upper end of said coil 1, opposite the direction to the orientation of the concavity of the bosses 5 of the turns 3 of the upper part of said coil.
  • the coil 1 may comprise only one boss and a single hollow or a plurality of bosses and recesses on one or more turns, the concavity of at least one boss may have an opposite orientation to the orientation of the concavity of at least one second boss.
  • each boss 5, and therefore each recess 6, has a generally semicircular shape; however, it is obvious that each boss 5 may have any shape such as a triangular shape, square or rectangular, for example.
  • f (t) may be substituted by f (t, ⁇ ) to adjust the angle of the cut along Oz in a radial plane.
  • the bosses 5 and the recesses 6 will then have a generally conical shape, that is to say that their edges will not be perpendicular to the axis of revolution of the tube 2.
  • the coil according to the invention is constituted in the same manner as previously of a generally cylindrical tube 2 in which turns 3 have been formed by cutting along a generally helical cut line 4, said turns comprising bosses 5 and recesses 6 of corresponding shapes. , a recess being further formed at each boss and hollow turns.
  • said bosses 5 and said recesses 6 have a trapezoidal shape while the recesses have a rectangular shape.
  • the section of the bosses 5 and recesses 6 may decrease from the outer wall to the inner wall of the tube 3.
  • This form of bosses and hollows is particularly suitable for the implementation of thin turns and / or for the isolation of insulation.
  • insulating boards such as, for example, pre-impregnated pre-preg fiberglass boards or polyimide insulating sheets, may be positioned between two adjacent turns 3, said plates preferably having a shape of annular section.
  • the turns 3 are separated by any appropriate means ( figure 3 ).
  • These insulating plates 7 advantageously consist of several superimposed thin insulating sheets 8, preferably at least three superimposed insulating thin sheets 8.
  • this superposition of thin sheets of insulation 8 provides a reduction of internal stresses to the insulator.
  • the intermediate sheet 8 is never in direct contact with the metal or the superconducting material of the turns 3 thus ensuring increased electrical safety.
  • the insulating plates 7 may comprise any number of sheets 8 and that they may be obtained in any insulating material without departing from the scope of the invention.
  • the positioning of the or recesses (10,11) formed at the bosses 5 and recesses 6 in the zone comprising the insulating plates 8 is particularly advantageous since the opening formed by these recesses. allows to guarantee a heat transfer in this zone, which would form in the opposite case a hot spot in the coil what is to be avoided to be able to have a homogeneous thermal regulation.
  • the setting of insulating plates between bosses 5 and successive recesses 6 can allow the passage of coolant between two zones comprising a boss 5 and a recess 6 ( figure 4 ).
  • the insulating plates come away from the turns 3 formed in the tube 2, thus creating days 9 between two zones having a boss 5 and a recess 6, these days 9 also allowing a circulation of a cooling fluid between inside and outside the tube and vice versa.
  • Said cooling liquid consisting for example in water in the case of resistive magnets, or in helium or liquid nitrogen in the case of superconducting materials.
  • Such an arrangement therefore allows for increased thermal regulation, since it is performed not only by the days 9 formed between the recesses 6 and bosses 5, but also at the level of the passages formed by the recesses (10,11).
  • a geometric model of the turns is made using computer-aided design (CAD) software such as CATIA® or Open Cascade marketed by the company Open Cascade SAS.
  • CAD computer-aided design
  • a mesh of the turns 3 and the boss or bosses 5 and corresponding hollow or recesses 6, and recesses (10, 11) is produced, in a step 200, from the CAD model by means of a suitable software such as, for example, the CATIA® software or a mesher Ghs3d® from the company Distene, then in a step 300, a simulation of thermal heating and / or electromagnetic fields and / or mechanical behavior corresponding to the previous mesh is performed.
  • CAD computer-aided design
  • Said thermal heating and / or electromagnetic fields and / or mechanical deformations obtained by this mesh are compared, in a step 400, with a so-called reference model having no bosses and hollows, and / or having no recesses. . Modifications can be made if necessary on the geometry of the turns. The procedure is then repeated until a suitable model is obtained.
  • the steps 100 to 400 are then repeated until a mesh is obtained having a minimum thermal heating and / or a homogeneous or almost homogeneous magnetic field and / or a minimization of the displacements consecutive to the electromagnetic and thermal loadings.
  • the parameterized curve corresponding to the selected cutout thus determined is then transmitted to a digital cutting machine, which cuts the turns 3, bosses 5 and recesses 6, and recesses (10,11) in the tube 2, in a step 500.
  • a digital cutting machine which cuts the turns 3, bosses 5 and recesses 6, and recesses (10,11) in the tube 2, in a step 500.
  • bosses 5 and the recesses 6 cooperate to ensure a centering of the turns.
  • the tube 2 may consist of a set of tubes, said tube 2 or the set of tubes being preferably formed of a solid conducting and / or superconductive material.
  • the tube 2 may consist of a support tube obtained in copper or stainless steel for example and on which are secured, for example by welding, son or superconducting cables.
  • the support tube provided with the bosses 5 and recesses 6 and recesses according to the invention then has a function of recovery of the electromagnetic forces and a heat dissipation function in case of "quench", that is to say of return in the normal accidental state or not of the superconducting part.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Claims (15)

  1. Verfahren zur Herstellung einer Spule, die geeignet ist, ein Magnetfeld, sogenanntes intensives Feld, zu erzeugen, wenn sie von einem elektrischen Strom durchflossen wird, umfassend einen Schritt des Ausbildens von Windungen in einem Rohr, das aus einem leitenden und/oder supraleitenden Material erhalten wird, dadurch gekennzeichnet, dass es wenigstens einen Schritt des Ausbildens wenigstens einer Vertiefung durch Materialabtrag in einer Kante wenigstens einer Windung der Spule sowie einen Schritt des Positionierens eines Isolationsmaterials zwischen der Windung mit der Materialabtragsvertiefung und einer benachbarten Windung umfasst, wobei die Materialabtragsvertiefung in der Kante ausgebildet ist, um mit dem Isolationsmaterial, das gegenüber der Materialabtragsvertiefung angeordnet ist, einen Kanal zwischen dem Inneren und dem Äußeren des Rohres zu bilden, wenn die Spule belastet ist.
  2. Verfahren nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Schritt des Ausbildens wenigstens einer Vertiefung durch Materialabtrag das Ausbilden wenigstens einer ersten Vertiefung durch Materialabtrag in einer Kante wenigstens einer Windung der Spule und wenigstens einer zweiten Vertiefung durch Materialabtrag in einer Kante einer benachbarten Windung umfasst, derart, dass die erste Materialabtragsvertiefung der zweiten Materialabtragsvertiefung gegenüberliegt, wobei die erste und die zweite Materialabtragsvertiefung, die in den benachbarten Windungen ausgebildet sind, den Kanal zwischen dem Inneren und dem Äußeren des Rohres bilden.
  3. Verfahren nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass es ferner das Ausbilden wenigstens eines Buckels an der Windung mit der ersten Materialabtragsvertiefung und das Ausbilden wenigstens einer Mulde an der Windung mit der zweiten Materialabtragsvertiefung umfasst, derart, dass der Buckel sich gegenüber der Mulde erstreckt, wodurch ermöglicht wird, die mechanischen Kräfte, welche durch die elektromagnetischen Kräfte und die mechanischen Kräfte thermischen Ursprungs bewirkt werden, wiederaufzunehmen.
  4. Verfahren nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die erste Materialabtragsvertiefung in der Kante der Windung im Bereich des buckelförmigen Profils ausgebildet ist und die zweite Materialabtragsvertiefung in der Kante der Windung im Bereich des muldenförmigen Profils ausgebildet ist.
  5. Verfahren nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Ausbildung des Buckels und die Ausbildung der ersten Materialabtragsvertiefung gleichzeitig vollzogen werden und dass die Ausbildung der Mulde und die Ausbildung der zweiten Materialabtragsvertiefung gleichzeitig vollzogen werden.
  6. Verfahren nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass es einen vorhergehenden Schritt des Optimierens des oder der Buckel(s) und der entsprechenden Mulde oder Mulden sowie der Materialabtragsvertiefungen umfasst.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der Schritt des Optimierens wenigstens in den folgenden Schritten besteht des:
    - Festlegens eines Netzes der Windungen, des oder der Buckel(s) und der entsprechenden Mulde oder Mulden sowie der Materialabtragsvertiefungen,
    - Simulierens der thermischen Erwärmungen und/oder der elektromagnetischen Felder anhand des Netzes,
    - Vergleichens der thermischen Erwärmungen und/oder der elektromagnetischen Felder mit denjenigen eines sogenannten Referenznetzes, das keine Buckel umfasst und/oder keine Materialabtragsvertiefungen umfasst,
    - Vergleichens der Bewegungen unter den elektromagnetischen und thermischen Belastungen der Windungen mit denjenigen eines sogenannten Referenzmodells, das keine Buckel umfasst und/oder keine Materialabtragsvertiefungen umfasst.
  8. Spule, die geeignet ist, ein Magnetfeld, sogenanntes intensives Feld, zu erzeugen, wenn sie von einem elektrischen Strom durchflossen wird, wobei die Spule (1) wenigstens ein Rohr (2) oder eine Anordnung von Rohren umfasst, das/die aus einem leitenden und/oder supraleitenden Material erhalten und entlang einer Schnittlinie (4) geschnitten wird, um Windungen (3) zu bilden, dadurch gekennzeichnet, dass sie ein Isolationsmaterial umfasst, das die Schnittlinie (4) wenigstens teilweise ausfüllt, und dass wenigstens eine Windung (3) wenigstens eine Vertiefung (10), welche durch Materialabtrag in einer Kante der Windung (3) gegenüber dem Isolationsmaterial ausgebildet ist, umfasst, wobei die Materialabtragsvertiefung (10) mit dem Isolationsmaterial einen Kanal zwischen dem Inneren und dem Äußeren des Rohres (2) bildet, wenn die Spule belastet ist.
  9. Spule nach Anspruch 8, dadurch gekennzeichnet, dass wenigstens eine Windung (3) wenigstens eine erste Materialabtragsvertiefung (10) umfasst, welche in einer Kante der Windung ausgebildet ist und einer zweiten Materialabtragsvertiefung (11), welche in einer Kante einer benachbarten Windung (3) ausgebildet ist, gegenüberliegt, wobei die erste (10) und die zweite (11) Materialabtragsvertiefung, welche in den benachbarten Windungen ausgebildet sind, den Kanal zwischen dem Inneren und dem Äußeren des Rohres (2) bilden.
  10. Spule nach Anspruch 9, dadurch gekennzeichnet, dass die Windung (3), welche die erste Materialabtragsvertiefung (10) umfasst, ferner wenigstens einen Buckel (5) umfasst, der sich gegenüber einer Mulde (6) mit entsprechender Form erstreckt, welche in der benachbarten Windung (3) mit der zweiten Materialabtragsvertiefung (11) ausgebildet ist, wobei die erste (10) und die zweite (11) Materialabtragsvertiefung in der Kante der entsprechenden Windungen (3) im Bereich des buckelförmigen (5) bzw. muldenförmigen (6) Profils ausgebildet sind.
  11. Spule nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass jede Materialabtragsvertiefung (10, 11) allgemein halbkreisförmig oder dreieckig oder quadratisch oder rechteckig oder trapezförmig ausgebildet ist.
  12. Spule nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, dass die Windungen (3) mehrere Materialabtragsvertiefungen umfassen, wobei die benachbarten Materialabtragsvertiefungen einer Windung (3) winkelmäßig versetzt sind.
  13. Spule nach einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, dass sie ferner einen Streifen oder Draht umfasst, der aus einem supraleitenden Material gebildet ist, wobei der Streifen oder Draht an der Innen- und/oder Außenseite des Rohres (2) befestigt ist.
  14. Anwendung der Spule nach einem der Ansprüche 8 bis 13 auf einen supraleitenden Magneten.
  15. Anwendung der Spule nach einem der Ansprüche 8 bis 13 auf eine Spule mit solenoidförmigem Gradienten einer Kernspinresonanzmaschine.
EP11714783.5A 2010-04-19 2011-04-19 Verbesserte spule zur erzeugung eines starken magnetfeldes und verfahren zu herstellung einer derartigen spule Not-in-force EP2561521B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1052952A FR2959059A1 (fr) 2010-04-19 2010-04-19 Bobine amelioree apte a generer un champ magnetique intense et procede de fabrication de ladite bobine
PCT/EP2011/056194 WO2011131645A1 (fr) 2010-04-19 2011-04-19 Bobine améliorée apte à générer un champ magnétique intense et procédé de fabrication de ladite bobine

Publications (2)

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EP2561521A1 EP2561521A1 (de) 2013-02-27
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US (1) US9275780B2 (de)
EP (1) EP2561521B1 (de)
JP (1) JP5913288B2 (de)
KR (1) KR101874652B1 (de)
CN (1) CN102934178B (de)
FR (1) FR2959059A1 (de)
WO (1) WO2011131645A1 (de)

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US9786421B2 (en) * 2014-09-22 2017-10-10 Advanced Magnet Lab, Inc. Segmentation of winding support structures
CN112071583B (zh) 2020-07-23 2021-11-05 中国科学院电工研究所 高压隔离耐压平板变压器及其高压绝缘方法

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FR2959059A1 (fr) 2011-10-21
US9275780B2 (en) 2016-03-01
CN102934178B (zh) 2016-05-04
JP2013529377A (ja) 2013-07-18
US20130038331A1 (en) 2013-02-14
EP2561521A1 (de) 2013-02-27
KR20130060182A (ko) 2013-06-07
WO2011131645A1 (fr) 2011-10-27
CN102934178A (zh) 2013-02-13
KR101874652B1 (ko) 2018-08-02
JP5913288B2 (ja) 2016-04-27

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