JP2010109287A - Superconducting coil apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a superconducting coil apparatus which has improved stability and insulation by reducing an influence of deterioration and strain stress in an edgewise direction which are caused by thermal distortion at the time of connection. <P>SOLUTION: A first superconducting coil apparatus 10A includes a core 15 formed of an insulator, an electrode 13 buried into the core and fixed to the core 15 with a screw 16, and two superconducting tape wires 14a and 14b electrically connected to the electrode 13, and is constituted by disposing two superconducting coils 11a and 11b wherein two superconducting tape wires 14a and 14b are wound in opposite directions, coaxially adjacently to each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a superconducting coil apparatus that suppresses deterioration of a superconducting coil as much as possible and reduces stability and insulation by reducing deterioration due to thermal strain at the time of connection and strain stress in the edgewise direction.

With the improvement of superconducting technology, for example, a magnetic resonance imaging diagnostic apparatus (MRI), a superconducting magnetic energy storage apparatus (SMES), a single crystal pulling apparatus and the like have been put into practical use. These devices use a superconducting coil formed by winding a superconducting wire. However, when using a tape-shaped superconducting wire (superconducting tape wire) such as a high-temperature superconducting wire, the superconducting tape wire is in the same plane. There are cases where two single pancake-shaped superconducting coils are wound and used as a double pancake-shaped superconducting coil. To make a double pancake-shaped superconducting coil, two single-pancake-shaped superconducting coils are manufactured, arranged coaxially, and a single pancake-shaped superconducting coil is connected by soldering a metal plate inside. There are a method of connecting each other and a method of manufacturing a double pancake-shaped superconducting coil without providing a connecting portion by providing a connecting portion in the innermost layer (for example, Patent Document 1).
JP 2000-130785 A

  However, in the method of soldering two single pancake-shaped superconducting coils using a metal plate, the metal plate is heated to make the solder connection. At that time, the heat is transferred to the inside of the coil, depending on the location. There was a problem in that the thermal conductivity of the superconducting tape wire was caused by the temperature difference and the difference in thermal expansion coefficient of the constituent materials, resulting in deterioration.

  In addition, since the metal plate is arranged in the innermost layer, the electrode is exposed in the innermost layer, which causes a problem that the insulation is weakened and a bore in the innermost layer is reduced. Further, in order to manufacture a double pancake-shaped superconducting coil without providing a connecting portion, not to wind a single pancake-shaped superconducting coil, but to wind a double pancake-shaped superconducting coil. There is a problem that a special winding machine is required and strain stress is generated in the edgewise direction on the wire at the crossing portion, so that the superconducting tape wire is deteriorated.

  The present invention has been made in consideration of the above-mentioned problems, and by suppressing the deterioration due to thermal strain at the time of connection and the strain stress in the edgewise direction, the deterioration of the superconducting coil is suppressed as much as possible, and the stability and An object of the present invention is to provide a superconducting coil device with improved insulation.

  In order to solve the above-described problem, the superconducting coil device according to the present invention, as described in the claims, is a core formed of an insulator, embedded in the core, and fixed without heating. An electrode and two superconducting tape wires electrically connected to the electrode are provided, and two superconducting coils formed by winding the two superconducting tape wires in opposite directions are arranged so as to be adjacent to each other coaxially. It is characterized by that.

  According to the present invention, deterioration due to thermal strain at the time of connection and influence due to strain stress in the edgewise direction can be reduced, so that deterioration during manufacturing of the superconducting coil can be suppressed as much as possible, and stability and insulation are improved. A superconducting coil device can be provided.

  Hereinafter, a superconducting coil device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is a schematic diagram showing a configuration of a superconducting coil device (hereinafter referred to as “first superconducting coil device”) 10A, which is an example of the superconducting coil device according to the first embodiment of the present invention. .

  The first superconducting coil device 10A is a double pancake-shaped superconducting coil device in which two superconducting coils 11a and 11b are arranged so as to be coaxially adjacent to each other. The first superconducting coil device 10A, for example, after electrically connecting superconducting tape wires 14a and 14b, which are examples of superconductors, to a copper (Cu) electrode (hereinafter referred to as "copper electrode") 13 is used. For example, the copper electrode 13 is embedded in the core 15 formed of an insulator such as FRP, and is mechanically fixed by a fixing tool 16 such as a screw. Thereafter, the superconducting tape wires 14a and 14b are wound, and the superconducting coil 11a and the superconducting coil 11b are arranged so as to be coaxially adjacent to each other.

  That is, the first superconducting coil device 10A includes a winding core 15, a copper electrode 13 embedded in the winding core 15 and mechanically fixed, and two superconducting conductors electrically connected to the electrode 13 in opposite directions. A tape wire 14 is provided, and two superconducting coils 11a and 11b formed by winding two superconducting tape wires 14a and 14b in opposite directions are arranged so as to be adjacent to each other coaxially.

  FIG. 2 is a schematic diagram showing the connection between the superconducting tape wires 14a and 14b forming the superconducting coils 11a and 11b of the first superconducting coil device 10A and the copper electrode 13, and FIG. FIG. 3 is an arrow view of the superconducting tape wires 14 a and 14 b and the copper electrode 13 shown from the direction of arrow AA.

  As shown in FIG. 2, the copper electrode 13 is electrically connected with solder while the superconducting tape wires 14 a and 14 b are in opposite directions. After embedding the copper electrode 13 in which the superconducting tape wires 14a and 14b are electrically connected with solder in the opposite directions in the winding core 15, the superconducting tape wires 14a and 14b are placed in the direction shown in FIG. Wind it around.

  As described above, in the first superconducting coil device 10A configured as shown in FIGS. 1 to 3, since the superconducting tape wires 14a and 14b are not subjected to large strain stress, the superconducting tape wires 14a and 14b Deterioration can be prevented. Further, before the superconducting coils 11a and 11b are formed, in order to electrically connect the superconducting tape wires 14a and 14b, after the superconducting tape wires 14a and 14b are wound to form the superconducting coils 11a and 11b, solder connection is performed. Therefore, it is possible to prevent the superconducting coils 11a and 11b from deteriorating without applying heat to the superconducting coils 11a and 11b.

  According to this embodiment, the first superconducting coil device 10A having a double pancake shape is manufactured without applying heat to the superconducting coils 11a and 11b and without applying a large strain stress to the superconducting tape wires 14a and 14b. it can. As a result, deterioration during production of the superconducting coils 11a and 11b can be suppressed as compared with the prior art, and the stability of the first superconducting coil device 10A (superconducting coils 11a and 11b) can be improved.

  Although the case where the electrode 13 of the first superconducting coil device 10A is copper has been described, it is not limited to copper. In some cases, the electrode 13 is made of a material that is equivalent to copper or has better conductivity than copper (eg, silver, gold, superconducting tape wire, etc.).

  Further, when manufacturing the superconducting coil device 10A, from the viewpoint of improving the insulation, for example, as shown in FIG. 4, an insulator 18 is provided between the superconducting coils 11a and 11b constituting the double pancake. It may be inserted. Further, for example, as shown in FIG. 5, the superconducting tape wires 14 a and 14 b and the insulator (insulator tape wire) 18 are wound together to form a space between the superconducting tape wires 14 a and 14 a and the superconducting tape wire 14 b. , 14b may be used to form superconducting coils 11a, 11b with an insulator 18 sandwiched between them, or a superconducting tape wire whose periphery is covered with an insulator may be used instead of the superconducting tape wires 14a, 14b. .

  Furthermore, the method of fixing the copper electrode 13 to the core 15 is not limited to fixing with the screw 16, and any method of fixing without applying heat (without heating) can be adopted. For example, if there is an adhesive capable of bonding the copper electrode 13 and the core 15 without heating, it may be used.

[Second Embodiment]
FIG. 6 is a schematic diagram showing a configuration of a superconducting coil device (hereinafter referred to as “second superconducting coil device”) 10B which is an example of the superconducting coil device according to the second embodiment of the present invention. .

  A superconducting coil device 10B shown in FIG. 6 is a double pancake in which superconducting coils 21a and 21b are arranged coaxially adjacent to the superconducting coil device 10A shown in FIG. 1 instead of the superconducting coils 11a and 11b. Although it is different in that it is a superconducting coil device having a shape, there is no substantial difference in other points. Therefore, in the present embodiment, the configuration of the superconducting coils 21a and 21b will be mainly described, and the components that are not substantially different will be denoted by the same reference numerals and description thereof will be omitted.

  7 and FIG. 8 are views of the second superconducting coil device 10B shown in FIG. 6 from the directions of arrows BB and CC, respectively, and FIG. 9 shows the second superconducting coil device. It is the schematic showing the mode of a connection of parallel conductors 22a and 22b which form 10B superconducting coils 21a and 21b, and copper electrodes 13a and 13b.

  As shown in FIG. 9, the superconducting coil 21a of the superconducting coil device 10B includes, for example, a parallel conductor 22a in which two superconducting tape wires 23a and 24a, which are a plurality of examples, are arranged adjacent to each other coaxially (in parallel). On the other hand, the superconducting coil 21b is formed by winding, for example, a parallel conductor 22b in which two superconducting tape wires 23b and 24b, which are a plurality of examples, are arranged in parallel, and the superconducting coils 21a and 21b. The parallel conductors 22a and 22b are dislocated so that the inductances are equal.

  The second superconducting coil device 10B composed of such superconducting coils 21a and 21b electrically connects the superconducting tape wire 23b and the superconducting tape wire 24b to the first copper electrode 13a with solder, The superconducting tape wire 23a and the superconducting tape wire 24a are electrically connected to the copper electrode 13b with solder. Then, after embedding the first copper electrode 13a and the second copper electrode 13b in the winding core 15 and mechanically fixing with the screw 16 as an example of a fixture, the superconducting tape wire 23a and the superconducting tape wire 24a are bundled. The superconducting coil 21a formed by winding the parallel conductor 22a and the superconducting coil 21b formed by winding the same number of the parallel conductor 22b in which the superconducting tape wire 23b and the superconducting tape wire 24b are bundled as the superconducting coil 21a are coaxially adjacent to each other. It is arranged and arranged.

  According to the present embodiment, in the second superconducting coil device 10B configured by arranging the superconducting coils 21a and 21b in which the parallel conductors 22a and 22b are dislocated so as to equalize the inductances so as to be adjacent to each other coaxially. Also, the same effect as that of the first superconducting coil device 10A can be obtained.

  Moreover, superconductivity which wound superconducting tape wire | line 14a, 14b is provided by providing the superconducting coil 21a, 21b which wound the parallel conductor 22a, 22b which gave the dislocation which can increase an electric current capacity and can suppress alternating current loss. As compared with the first superconducting coil device 10A including the coils 11a and 11b, the current capacity can be increased and the AC loss can be suppressed.

  In the second superconducting coil device 10B shown in FIGS. 6 to 8, the two copper electrodes 13a and 13b fixed to the core 15 are positioned relative to the central axis of the coil (in the circumferential direction of the coil). Although an example of arrangement at a symmetrical position) is shown, it is not always necessary that the two copper electrodes 13a and 13b be arranged at positions opposed to the central axis of the coil.

[Third Embodiment]
FIG. 10 is a schematic diagram showing a configuration of a superconducting coil device (hereinafter referred to as “third superconducting coil device”) 10C which is an example of the superconducting coil device according to the third embodiment of the present invention. .

  The superconducting coil device 10C shown in FIG. 10 is a double pancake in which superconducting coils 31a and 31b are arranged coaxially adjacent to the superconducting coil device 10A shown in FIG. 1 instead of the superconducting coils 11a and 11b. Although it is different in that it is a superconducting coil device having a shape, there is no substantial difference in other points. Therefore, in the present embodiment, the configuration of the superconducting coils 31a and 31b will be mainly described, and the components that are not substantially different will be denoted by the same reference numerals and description thereof will be omitted.

  FIG. 11 is a schematic diagram showing the connection between the superconducting tape wires 32a and 32b, the superconducting tape wires 33a and 33b, and the copper electrode 13 forming the superconducting coils 31a and 31b of the third superconducting coil device 10C. 12 is a view of the superconducting tape wires 32a and 32b, the superconducting tape wires 33a and 33b, and the copper electrode 13 shown in FIG.

  The superconducting coil 31a of the third superconducting coil device 10C has two superconducting tape wires 32a and a superconducting tape wire 33a as shown in FIGS. 11 and 12, instead of the superconducting tape wire 14a shown in FIG. It is formed by winding a superconducting tape wire (hereinafter referred to as “connected superconducting tape wire”) 34a constructed by soldering in the direction. Similarly, the superconducting coil 31b is formed by winding a connecting superconducting tape wire 34b formed by soldering two superconducting tape wires 32b and a superconducting tape wire 33b in the longitudinal direction instead of the superconducting tape wire 14b. .

  FIG. 13 is a partial enlarged view showing in greater detail a connection portion between the superconducting tape wire 32a, the superconducting tape wire 33a, and the copper electrode 13 shown in FIG. In addition, about the connection part of the superconducting tape wire | line 32b shown in FIG. 12, the superconducting tape wire | line 33b, and the copper electrode 13, the connection part of the superconducting tape wire | line 32a shown in FIG. Since it is substantially the same, description is abbreviate | omitted.

  As shown in FIG. 13, the superconducting tape wires 32 a and 33 a are an example of a superconducting tape wire having an asymmetrical structure composed of a stabilizer 36, a base 37, a superconducting layer 38, and a protective layer 39. When forming the connection superconducting tape wire 34a, it is preferable to connect the superconducting layer 38 of the superconducting tape wire 32a and the superconducting layer 38 of the superconducting tape wire 33a at a shorter distance from the viewpoint of reducing the connection resistance as much as possible. Therefore, the superconducting tape wire 32a and the superconducting tape wire 33a are electrically connected by the solder 40 so that the superconducting layer 38 sides face each other, thereby forming a connection superconducting tape wire 34a.

  In the third superconducting coil device 10C composed of such superconducting coils 31a and 31b, after superconducting tape wires 32a and 32b are electrically connected to the copper electrode 13 by soldering, they are embedded in the core 15 and fixed. A superconducting coil 31a is manufactured by mechanically fixing with a screw 16 as an example, and then winding a connection superconducting tape wire 34a formed by connecting the superconducting tape wire 33a to the superconducting tape wire 32a with solder. Next, the superconducting coil 31b is manufactured by winding the connection superconducting tape wire 34b formed by connecting the superconducting tape wire 33b to the superconducting tape wire 32b with solder.

  According to the present embodiment, when the copper electrode 13 and the superconducting tape wires 32a and 32b are solder-connected, the superconducting tape wires 32a and 32b that are directly solder-connected to the copper electrode 13 can be shortened. Compared with the case of the superconducting tape wires 14a and 14b according to the first embodiment and the parallel conductors 22a and 22b according to the second embodiment, the superconducting tape wires 32a and 32b are excessive due to a handling error at the time of solder connection. This is advantageous in that it can prevent the application of force and heat. Moreover, it is advantageous in that the front and back of the superconducting tape wires 32a and 32b can be freely changed.

  Further, since the front and back sides of the superconducting tape wires 32a and 32b can be freely changed, the superconducting tape wires 33a and 33b are connected to the superconducting tape wires 32a and 32b by soldering so that the directions are necessary in terms of the coil characteristics. The tape wires 34a and 34b can be formed and the connection superconducting tape wires 34a and 34b can be wound. As a result, when the superconducting coils 31a and 31b are manufactured, there is no need to use a winding machine for producing a superconducting coil having a double pancake shape. It becomes possible to wind. That is, workability when winding the superconducting tape wire can be significantly improved.

  Furthermore, when the connecting superconducting tape wires 34a and 34b are formed, the superconducting tape wires 32a and 32b and the superconducting tape wires 33a and 33b are electrically connected by the solder 40 so that the superconducting layer 38 faces each other. Therefore, the superconducting tape wire 32a and the superconducting tape wire 32a are formed rather than the case where the connection superconducting tape wires 34a and 34b are formed without considering the direction of the superconducting tape wire 32a and the superconducting tape wire 33a and the direction of the superconducting tape wire 32b and the superconducting tape wire 33b. Since the connection resistance between the superconducting tape wires 33a and between the superconducting tape wires 32b and the superconducting tape wires 33b can be suppressed, heat generation at the connecting portions can be reduced, and the third superconducting coil device 10C (superconducting coil 31a) can be reduced. , 31b) can be improved.

  In addition, although the connection superconducting tape wire 34a (34b) explained the case where the two superconducting tape wires of the superconducting tape wire 32a (32b) and the superconducting tape wire 33a (33b) were connected in the longitudinal direction. In some cases, two or more superconducting tape wires are connected in the longitudinal direction.

[Fourth Embodiment]
A superconducting coil device (hereinafter referred to as a “fourth superconducting coil device”) 10D, which is an example of the superconducting coil device according to the fourth embodiment of the present invention, is compared with the first superconducting coil device 10A. The copper electrode 13 and the superconducting tape wires 14a and 14b are all differently covered with the insulator 18, but the other points are not substantially different. Therefore, in the present embodiment, description will be made centering on the copper electrode 13 and the superconducting tape wires 14a and 14b covered with the insulator 18, and the components that are not substantially different will be given the same reference numerals and description thereof will be omitted. .

  FIG. 14 is a schematic view showing a state of the copper electrode 13 and the superconducting tape wires 14a and 14b covered with the insulator 18 forming the superconducting coils 11a and 11b in the fourth superconducting coil device 10D.

  As in the first superconducting coil device 10A, the fourth superconducting coil device 10D has the copper electrode 13 electrically connected with solder while the superconducting tape wires 14a and 14b are in the opposite directions. As shown in FIG. 4, the superconducting tape wires 14a and 14b and the entire copper electrode 13 (the entire surface) are covered with an insulator 18. The fourth superconducting coil device 10D is manufactured in the same manner as the first superconducting coil device 10A shown in FIGS. 1 to 3 by using the electrode 13 covered with the insulator 18 and the superconducting tape wires 14a and 14b. The

  That is, the electrode 13 covered with the insulator 18 is embedded in the core 15, fixed with a screw 16, and the superconducting tape wires 14 a and 14 b covered with the insulator 18 are wound to thereby connect the superconducting coil 11 a and the superconducting coil 11 b. The superconducting coil 11a and the superconducting coil 11b thus formed are arranged so as to be adjacent to each other coaxially.

  In the fourth superconducting coil device 10D configured in this manner, in addition to the effects obtained by the first superconducting coil device 10A, the copper electrode 13 and the superconducting tape wires 14a and 14b are all covered with an insulator 18, thereby insulating Therefore, the withstand voltage of the formed superconducting coils 11a and 11b can be improved, and the stability of the fourth superconducting coil device 10D (superconducting coils 11a and 11b) can be improved.

  According to the present embodiment, in addition to the effects obtained in the first embodiment, the withstand voltage can be improved as compared with the conventional and the first embodiment, so the fourth superconducting coil device 10D (superconducting coil 11a). 11b) can be further improved.

[Fifth Embodiment]
A superconducting coil device (hereinafter referred to as a “fifth superconducting coil device”) 10E, which is an example of a superconducting coil device according to the fifth embodiment of the present invention, is compared with the first superconducting coil device 10A. The superconducting tape wire 41, which is a superconducting conductor, is soldered between the copper electrode 13 and the superconducting tape wires 14a and 14b, but the other points are not substantially different. Therefore, in this embodiment, the copper electrode 13 and the superconducting tape wires 14a and 14b that are respectively solder-connected by the superconducting tape wire 41 will be mainly described, and the other components that are not substantially different will be denoted by the same reference numerals. Description is omitted.

  FIG. 15 is a schematic view showing the state of the copper electrode 13 and the superconducting tape wires 14a and 14b in which the superconducting tape wires 41 forming the superconducting coils 11a and 11b are respectively solder-connected in the fifth superconducting coil device 10E. .

  The fifth superconducting coil device 10E includes a superconducting tape wire 41 soldered to the copper electrode 13 while the superconducting tape wires 14a and 14b are oppositely connected to each other while the superconducting tape wire 41 is solder-connected to the copper electrode 13. Each of the superconducting tape wires 14a and 14b is soldered to connect the superconducting tape wire 14a, the superconducting tape wire 41, and the superconducting tape wire 14b in a superconducting manner. The fifth superconducting coil device 10E is similar to the first superconducting coil device 10A shown in FIGS. 1 to 3, using the copper electrode 13 and the superconducting tape wires 14a and 14b respectively connected to the superconducting tape wire 41. Produced.

  That is, the copper electrode 13 soldered to the superconducting tape wire 41 is embedded in the winding core 15 and fixed with the screw 16, and the superconducting tape wires 14a and 14b superconductively connected to the superconducting tape wire 41 are wound. Superconducting coil 11a and superconducting coil 11b are formed, and the formed superconducting coil 11a and superconducting coil 11b are arranged so as to be adjacent to each other coaxially.

  In the fifth superconducting coil device 10E configured as described above, in addition to the effects obtained by the first superconducting coil device 10A, it is the superconductor that connects the two superconducting tape wires 14a and 14b. Since the superconducting tape wire 41 is, the connection resistance can be further reduced. As a result, heat generation at the connection portion can be reduced, and the stability of the fifth superconducting coil device 10E (superconducting coils 11a and 11b) can be improved.

  According to the present embodiment, in addition to the effects obtained in the first embodiment, the connection resistance of the connection portion between the two superconducting tape wires 14a and the superconducting tape wires 14b is made smaller than in the conventional and first embodiments. Since it becomes possible to suppress, the heat_generation | fever in the said connection part can be reduced and stability of the 5th superconducting coil apparatus 10E (superconducting coil 11a, 11b) can be improved more.

  As described above, according to the superconducting coil device according to the present invention, a double pancake-shaped superconducting coil device can be manufactured without applying heat to the superconducting coil and without applying a large strain stress to the superconducting tape wire. As a result, deterioration during production of the superconducting coil can be suppressed more than before, and the stability of the superconducting coil device (superconducting coil) can be improved.

  In addition, since the superconducting tape wire can be wound by being fixed to the core while covering not only the superconducting tape wire but also the electrode, the withstand voltage of the formed superconducting coil can be improved, and the superconducting coil device (superconducting coil) ) Can be improved.

  Note that the present invention is not limited to the above-described embodiments as they are, and may be embodied by modifying constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, you may delete some components from all the components shown by embodiment. Furthermore, the constituent elements over different embodiments may be appropriately combined.

Schematic which shows the structure of the superconducting coil apparatus which concerns on the 1st Embodiment of this invention. The schematic diagram showing the mode of connection of the superconducting tape wire which forms the superconducting coil of the superconducting coil device concerning a 1st embodiment of the present invention, and a copper electrode. The figure which looked at the superconducting tape wire and copper electrode which form the superconducting coil of the superconducting coil apparatus which concerns on the 1st Embodiment of this invention from the arrow AA direction shown by FIG. Schematic which shows the application example which inserted the insulator between the superconducting coils in the superconducting coil apparatus which concerns on embodiment of this invention. Schematic which shows the example which applied the superconducting coil which pinched | interposed the insulator between the superconducting tape wires in the superconducting coil apparatus which concerns on embodiment of this invention. Schematic which shows the structure of the superconducting coil apparatus which concerns on the 2nd Embodiment of this invention. The figure which looked at the superconducting coil apparatus which concerns on the 2nd Embodiment of this invention from the arrow BB direction shown by FIG. The figure which looked at the superconducting coil apparatus which concerns on the 2nd Embodiment of this invention from the arrow CC direction shown by FIG. The schematic diagram showing the mode of connection of the parallel conductor and copper electrode which form the superconducting coil of the superconducting coil device concerning a 2nd embodiment of the present invention. Schematic which shows the structure of the superconducting coil apparatus which concerns on the 3rd Embodiment of this invention. The schematic diagram showing the mode of connection of the superconducting tape wire and superconducting tape wire which form the superconducting coil of the superconducting coil device concerning a 3rd embodiment of the present invention, and the connection of a superconducting tape wire and a copper electrode. The figure which looked at the superconducting tape wire and copper electrode which form the superconducting coil of the superconducting coil apparatus which concerns on the 3rd Embodiment of this invention from the arrow DD direction shown by FIG. The elements on larger scale which expanded and showed in detail the connection part of the superconducting tape wire | line shown in FIG. 12, and the connection part of a superconducting tape wire | wire and a copper electrode. The schematic diagram showing the mode of the connection of the superconducting tape wire which forms the superconducting coil of the superconducting coil apparatus which concerns on the 4th Embodiment of this invention, and a copper electrode. Schematic showing the state of the connection of the superconducting tape wire which forms the superconducting coil of the superconducting coil apparatus which concerns on the 5th Embodiment of this invention, and a copper electrode.

Explanation of symbols

10A, 10B, 10C, 10D, 10E Superconducting coil devices 11a, 11b Superconducting coil 13 (13a, 13b) Electrodes 14a, 14b Superconducting tape wire 15 Core 16 Screw (fixing tool)
18 Insulator (insulator tape wire)
21a, 21b Superconducting coils 22a, 22b Parallel conductors 23a, 23b Superconducting tape wires 24a, 24b Superconducting tape wires 31a, 31b Superconducting coils 32a, 32b Superconducting tape wires 33a, 33b Superconducting tape wires 34a, 34b Connecting superconducting tape wires 36 Stabilizing material 37 Substrate 38 Superconducting layer 39 Protective layer 40 Solder 41 Superconducting tape wire (superconducting conductor)

Claims (10)

A winding core formed of an insulator;
An electrode embedded in the core and fixed without heating;
Comprising two superconducting tape wires electrically connected to this electrode;
A superconducting coil device comprising two superconducting coils formed by winding the two superconducting tape wires in opposite directions so as to be adjacent to each other coaxially. The electrode has a first electrode and a second electrode;
Each of the first electrode and the second electrode has two superconducting tape wires coaxially adjacent to each other, and
Two loops connected to the first electrode so that a loop formed by the superconducting tape wire connected to the first electrode is equal to a loop formed by the superconducting tape wire connected to the second electrode. 2. The superconducting device according to claim 1, wherein two superconducting coils formed by winding a superconducting tape wire and two superconducting tape wires connected to the second electrode are arranged so as to be coaxially adjacent to each other. Coil device. 3. The superconducting coil device according to claim 2, wherein the first electrode and the second electrode are arranged at positions symmetrical in a coil circumferential direction with respect to a central axis of the superconducting coil. The superconducting coil device according to claim 1 or 2, wherein the superconducting tape wire is configured by connecting a plurality of superconducting tape wires in a longitudinal direction. 5. The superconducting coil device according to claim 4, wherein the superconducting tape wire is connected so that superconducting layers in the superconducting tape wire face each other when the superconducting tape wire has a front and back asymmetric structure. The superconducting coil device according to any one of claims 1 to 5, wherein an insulator is sandwiched between the respective superconducting tape wires. The superconducting coil device according to any one of claims 1 to 6, wherein the entire surface of the superconducting tape wire is covered with an insulator. The superconducting coil device according to any one of claims 1 to 7, wherein an insulator is sandwiched between the superconducting coils. The superconducting coil device according to any one of claims 1 to 8, wherein the superconducting coil has the electrode and a superconducting tape wire connected to the electrode covered with an insulator. The superconducting coil is configured by connecting another superconducting tape wire between the electrode and the superconducting tape wire electrically connected to the electrode. The superconducting coil device according to claim 1.

Images