JP5526629B2 - Superconducting coil body manufacturing method and superconducting coil body - Google Patents

Description

  The present invention relates to a method for manufacturing a superconducting coil body and a superconducting coil body.

  Conventionally, superconducting equipment such as a superconducting magnet is manufactured by laminating a plurality of superconducting coils. The superconducting coil is manufactured by winding a winding frame and a superconducting wire around the winding frame. Examples of the superconducting wire used for the superconducting coil include Non-Patent Documents 1 and 2. It is described that the average thickness of the superconducting wire of Non-Patent Document 1 is 0.255 to 0.285 mm. Non-Patent Document 2 describes that the superconducting wire has an average thickness of 0.30 ± 0.04 mm.

"High Strength Plus Wire", [online], [Search April 21, 2009], Internet <URL: http: //www.amsc.com/products/htswire/1gHSP.html> "DI-BSCCO", [online], [Search April 21, 2009], Internet <http://www.sei.co.jp/super/hts/type_ht.html>

  The average thickness of the superconducting wires of Non-Patent Documents 1 and 2 varies from 0.03 to 0.08 mm. Thus, when the dispersion | variation in the average thickness of a superconducting wire is large, there exists a problem that the characteristic of the superconducting coil produced using these superconducting wires deteriorates. The reason will be described below.

  Specifically, as shown in FIG. 10, when superconducting wires 210 and 220 having different average thicknesses are wound around a winding frame 213 with the same number of turns to form a superconducting coil, the outer shapes of the respective superconducting coils are different. For this reason, when each superconducting wire is connected in the region R of FIG. 10, the superconducting wire may be caught and broken due to the difference in the outer shape. If the superconducting wire is broken, the characteristics of the superconducting coil deteriorate.

  Therefore, an object of the present invention is to provide a method of manufacturing a superconducting coil body and a superconducting coil body in which deterioration of characteristics is suppressed.

The manufacturing method of the superconducting coil body of the present invention includes the following steps. Prepare multiple superconducting wires. The first superconducting wire having the largest average thickness is identified from the superconducting wires, the outer shape of the first superconducting coil formed by winding the first superconducting wire is designed, and the first superconducting wire is wound. Thus, the first superconducting coil is formed. It is formed by winding the remaining superconducting wire together with the tape-like member so that the difference in outer edge with the first superconducting coil is 5 mm or less and the same number of turns as the first superconducting coil. The remaining superconducting coil is designed, and the remaining superconducting wire is wound with a tape-shaped member to form the remaining superconducting coil. The first superconducting coil and the remaining superconducting coil are connected so that the characteristics of the plurality of superconducting wires are not deteriorated .

  According to the method for manufacturing a superconducting coil body of the present invention, the outer shape of the remaining superconducting coil is adjusted using a tape-like member, and the outer shape of the first superconducting coil formed using the superconducting wire having the largest average thickness. It has the same external shape. For this reason, it is possible to align the outer shapes of the first superconducting coil and the remaining superconducting coil. Thereby, it is possible to prevent the superconducting wire from being caught in the connection between the first superconducting coil and the remaining superconducting coil. Therefore, since the superconducting wire can be prevented from being broken, it is possible to suppress the deterioration of the characteristics of the superconducting coil body in which the first superconducting coil formed using these superconducting wires and the remaining superconducting material are connected.

The superconducting coil body according to the present invention has a plurality of superconducting coils formed of a plurality of superconducting wires coated with an insulating material and having an average thickness of at least one different so that characteristics of the plurality of superconducting wires are not deteriorated. A plurality of superconducting coils , wherein the difference between the outer edges of the plurality of superconducting coils is 5 mm or less . In the plurality of superconducting coils, the superconducting wire and the tape-like member are wound together, The number of turns of the tape-like member in one of the superconducting coils is different from the number of turns of the tape-like member in the other one of the plurality of superconducting coils.
In the superconducting coil body according to one aspect of the present invention, a plurality of superconducting coils formed using a plurality of superconducting wires coated with an insulating material and having an average thickness different from each other are deteriorated in characteristics of the plurality of superconducting wires. The superconducting coil bodies are connected so that the difference between the outer edges of the plurality of superconducting coils is 5 mm or less , and at least one superconducting coil of the plurality of superconducting coils is composed of a superconducting wire and a tape-like member. The superconducting wire is wound, and at least one superconducting coil of the plurality of superconducting coils is characterized in that the superconducting wire is wound in a state where the tape-like member is not co-wound.

  According to the superconducting coil body in one aspect of the present invention, the superconducting wire and the tape-like member are wound together to make the outer shapes of the plurality of superconducting coils the same. For this reason, it can suppress that a superconducting wire is caught and can connect a some superconducting coil. Therefore, since the superconducting wire can be prevented from being broken at the connection of a plurality of superconducting coils, the deterioration of the characteristics of the superconducting coil body can be suppressed.

A superconducting coil body according to another aspect of the present invention is a superconducting coil body in which a plurality of superconducting coils in which a superconducting wire and a tape-like member are wound together are connected , and the plurality of superconducting coils have an average thickness of at least 1. Are formed using a plurality of different superconducting wires, the plurality of superconducting coils are connected so that the characteristics of the plurality of superconducting wires are not deteriorated, and the difference between the outer edges of the plurality of superconducting coils is 5 mm or less. It is characterized in that the average thicknesses of the tape-like members wound together in the coil are different.

  According to the superconducting coil body in another aspect of the present invention, the outer shapes of the plurality of superconducting coils are made the same by co-winding tape-like members having different average thicknesses. For this reason, it can suppress that a superconducting wire is caught and can connect a some superconducting coil. Therefore, since the superconducting wire can be prevented from being broken at the connection of a plurality of superconducting coils, the deterioration of the characteristics of the superconducting coil body can be suppressed.

Preferably, in the method of manufacturing the superconducting coil body, in the step of forming the first superconducting coil, the first superconducting wire is wound together with the tape-shaped member to form the first superconducting coil, and the first superconducting coil The number of turns of the tape-like member is different from the number of turns of at least one tape-like member in the remaining superconducting coil.
Preferably, in the method of manufacturing the superconducting coil body, in the step of forming the remaining superconducting coil, at least one selected from the group consisting of a polyimide tape, a prepreg tape, and a polyamide tape is used as the tape-like member.

  In the superconducting coil body according to one and other aspects of the present invention, preferably, the tape-shaped member is at least one selected from the group consisting of a polyimide tape, a prepreg tape, and a polyamide tape.

  These tape-shaped members are insulative and have low-temperature resistance. For this reason, the short circuit of a superconducting coil can be prevented and the tolerance in a superconducting state can be improved.

  Preferably, in the method of manufacturing the superconducting coil body, in the step of forming the remaining superconducting coil, the remaining superconducting wire is wound together with the tape-like member in the entire length of the remaining superconducting wire.

  In the one and other superconducting coil bodies, preferably, the superconducting wire co-wound with the tape-like member is wound together with the tape-like member in all the length directions.

  Thereby, the current density of the superconducting coil having the superconducting wire wound together with the tape-like member in all the length directions can be made uniform. For this reason, the uniformity of the magnetic field distribution can be improved.

  Preferably, in the method of manufacturing the superconducting coil body, in the step of forming the remaining superconducting coil, the remaining superconducting wire is wound together with the tape-like member in a part of the remaining superconducting wire in the length direction.

  In the superconducting coil body according to the above and other aspects, preferably, the superconducting wire wound together with the tape-like member is wound together with the tape-like member in a part in the length direction.

  Thereby, the external shape of the superconducting coil wound with the tape-like member can be easily adjusted without depending on the thickness of the superconducting wire, the thickness of the tape-like member, or the like. For this reason, a superconducting coil can be easily formed in the same external shape.

  As described above, according to the method of manufacturing a superconducting coil body and the superconducting coil body of the present invention, it is possible to suppress deterioration of characteristics.

It is a perspective view which shows roughly the superconducting coil body in Embodiment 1 of this invention. It is sectional drawing which showed the 1st superconducting coil in Embodiment 1 of this invention roughly, and followed the line segment II-II in FIG. It is sectional drawing which showed the 2nd superconducting coil in Embodiment 1 of this invention roughly, and followed the III-III line | wire in FIG. It is sectional drawing which shows schematically the superconducting wire in Embodiment 1 of this invention. It is sectional drawing which shows schematically the superconducting wire in Embodiment 1 of this invention. It is a flowchart which shows the manufacturing method of the superconducting coil body in Embodiment 1 of this invention. It is a schematic diagram which shows schematically the superconducting coil body different from Embodiment 1 of this invention. It is sectional drawing which shows schematically the 1st superconducting coil which comprises the superconducting coil body in Embodiment 2 of this invention. It is sectional drawing which shows schematically the 2nd superconducting coil which comprises the superconducting coil body in Embodiment 3 of this invention. It is a schematic diagram which shows roughly the superconducting coil body of a comparative example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

(Embodiment 1)
A superconducting coil body 100 according to an embodiment of the present invention will be described with reference to FIGS. Superconducting coil body 100 in the present embodiment is a double pancake type coil.

  Specifically, the superconducting coil body 100 according to the present embodiment includes a first superconducting coil 110 and a second superconducting coil 120 as shown in FIGS. The external shapes of the first and second superconducting coils 110 and 120 are the same. As shown in FIG. 2, the first superconducting coil 110 includes a winding frame 111 and a superconducting wire 112 wound around the winding frame 111. The first superconducting coil 110 is wound with a superconducting wire 112 in a state where the tape-like member is not wound together. As shown in FIG. 3, the second superconducting coil 120 includes a winding frame 121, a superconducting wire 122 wound around the winding frame 121, and a tape-like member 123 wound together with the superconducting wire 122. In the present embodiment, the second superconducting coil 120 is wound together with the tape-like member 123 in all the length directions. Superconducting wires 112 and 122 are connected to each other in the outermost peripheral layer.

  Here, “the outer shapes of the first and second superconducting coils 110 and 120 are the same” means that the difference between the outer edges of the first superconducting coil 110 and the second superconducting coil 120 is the superconducting wire 112 used. , 122 within the allowable bending strain range. In this case, the deterioration of the characteristics of the superconducting wires 112 and 122 can be suppressed in the connection of the superconducting wires 112 and 122. The difference in the outer edge is, for example, 5 mm or less, preferably 1 mm or less, more preferably 0.3 mm or less. In the case of 0.3 mm or less, the bending strain of the superconducting wires 112 and 122 can be effectively suppressed. In the present embodiment, since first and second superconducting coils 110 and 120 are cylindrical, the difference between outer diameters R110 and R120 of first and second superconducting coils 110 and 120 is 10 mm or less. If the first and second superconducting coils 110 and 120 are racetrack types, the difference between the major axis and the minor axis of the first and second superconducting coils 110 and 120 is 10 mm or less.

  The reels 111 and 121 have, for example, a cylindrical shape with an opening inside. In addition, the shape etc. of the winding frames 111 and 121 are not specifically limited, For example, a racetrack shape may be sufficient. Superconducting wires 112 and 122 are wound around the outer peripheries of the winding frames 111 and 121, respectively. Although the material which comprises the reels 111 and 121 is not specifically limited, Stainless steel (SUS) or an insulating material etc. can be used.

  Superconducting wires 112 and 122 are wound around winding frames 111 and 121 to form first and second superconducting coils 110 and 120. In this embodiment, as shown in FIG. 1, it is a double pancake type coil, but the winding type is not particularly limited, and the double pancake type coil, the single pancake type coil, and the superconducting wires 112 and 122 are spiral. A wound coil or the like can be used.

  The superconducting wires 112 and 122 are tape-shaped, and a bismuth (Bi) -based superconducting wire may be used as shown in FIG. 4, or a thin film superconducting wire may be used as shown in FIG.

  As shown in FIG. 4, the bismuth-based superconducting wire covers a plurality of superconductors 112a extending in the longitudinal direction, a sheath portion 112b covering the entire circumference of the plurality of superconductors 112a, and covering the entire circumference of the sheath portion 112b. 112 g of insulating material. The sheath portion 112b is in contact with the superconductor 112a. Each of the plurality of superconductors 112a is preferably a bismuth-based superconductor having a composition of, for example, Bi—Pb—Sr—Ca—Cu—O, and in particular, an atomic ratio of (bismuth and lead): strontium: calcium: copper. Is optimally a material containing a Bi2223 phase represented by an approximate ratio of 2: 2: 2: 3. Note that a single superconductor 112a may be provided. The material of the sheath portion 112b is made of, for example, silver or a silver alloy. The insulating material 112g is formed to ensure insulation with other superconducting wires and the like. As the insulating material 112g, for example, a polyimide tape or the like can be used.

  As shown in FIG. 5, the thin film superconducting wire has a substrate 112c, an intermediate layer 112d, a superconducting layer 112e, a stabilization layer 112f, and an insulating material 112g. The intermediate layer 112d is provided in contact with the substrate 112c. Superconducting layer 112e is provided on and in contact with intermediate layer 112d. The stabilization layer 112f is provided in contact with the superconducting layer 112e. The insulating material 112g covers the entire outer periphery of the laminate including the substrate 112c, the intermediate layer 112d, the superconducting layer 112e, and the stabilization layer 112f.

  The substrate 112c is made of a metal such as stainless steel, nickel alloy (for example, Hastelloy), or silver alloy. The intermediate layer 112d is made of, for example, yttria stabilized zirconia, cerium oxide, magnesium oxide, or strontium titanate. Note that the intermediate layer 112d may be omitted.

Superconducting layer 112e is made of, for example, an RE123-based superconductor. The RE123-based superconductor, the _{RE x Ba y Cu z O 7} -d, is 0.7 ≦ x ≦ 1.3,1.7 ≦ y ≦ 2.3,2.7 ≦ z ≦ 3.3 Means that. The RE of the RE123-based superconductor means a material containing at least one of a rare earth element and an yttrium element. Examples of rare earth elements include neodymium (Nd), gadolinium (Gd), holmium (Ho), and samarium (Sm). The RE123-based superconducting wire has the advantage that the critical current density at the liquid nitrogen temperature (77.3 K) is higher than that of the bismuth-based superconducting wire. Moreover, it has the advantage that the critical current value is high under low temperature and constant magnetic field. On the other hand, since the RE123-based superconductor cannot be covered with the sheath portion unlike the bismuth-based superconductor, the superconductor (superconducting thin film material) is formed on the oriented metal substrate only by the vapor phase method or the liquid phase method. It is manufactured by the method.

  The stabilizing layer 112f is a layer provided for protecting the surface of the superconducting layer 112e, and is made of, for example, silver or copper. The stabilization layer 112f may be omitted.

  In the Bi-based superconducting wire and the thin film superconducting wire of the present embodiment, the insulating material 112g is not omitted in the superconducting wire 112 constituting the first superconducting coil 110, and in the superconducting wire 122 constituting the second superconducting coil 120. The insulating material 112g may be omitted.

  The tape-like member 123 is formed so that the outer shapes of the first and second superconducting coils 110 and 120 are the same. In the present embodiment, the average thickness of superconducting wire 112 that constitutes first superconducting coil 110 is greater than the average thickness of superconducting wire 122 that constitutes second superconducting coil 120. For this reason, the tape-like member 123 is wound together with the second superconducting wire 122 in order to align the outer shapes of the first and second superconducting coils 110 and 120.

  The tape-like member 123 may be insulative or conductive. When the superconducting wire 122 does not have the insulating material 112g, the tape-like member 123 is preferably insulative from the viewpoint of preventing a short circuit between the turns of the first superconducting coil 120. Such a material is preferably at least one selected from the group consisting of a polyimide tape, a prepreg tape (semi-cured tape), and a polyamide tape. Since these materials are thin, it is easy to adjust the thickness. The polyimide tape has a thickness of about 10 μm, for example. The prepreg tape and the polyamide tape have a thickness of about 50 μm, for example. As the polyamide tape, for example, Nomex tape (R) can be used. Further, when the first and second superconducting coils 110 and 120 are impregnated with resin, these materials have high affinity with the resin. Furthermore, since these materials have high resistance at low temperatures, the resistance in the superconducting state can be improved. The tape-like member 123 may be made of a material such as glass cloth.

  Then, the manufacturing method of the superconducting coil body 100 in this Embodiment is demonstrated. First, as shown in FIGS. 1-6, the several superconducting wire 112,122 is prepared (step S1). As the plurality of superconducting wires 112 and 122, superconducting wires as shown in FIG. 4 or 5 can be used.

  Next, the first superconducting wire 112 having the largest average thickness is specified from among the plurality of superconducting wires 112 and 122 (step S2). The average thickness means an average value of thicknesses measured at 50 points or more per 1 m in the longitudinal direction.

  Next, a first superconducting coil 110 is formed by winding the first superconducting wire 112 (step S3). In step S <b> 3, the superconducting wire 112 is wound around the winding frame 111. The winding method is not particularly limited, and the superconducting wire 112 is wound around the winding frame 111 like a double pancake type, a single pancake type, or a spiral shape. By performing step S3, a superconducting coil having the largest outer shape can be formed from among the plurality of prepared superconducting wires.

  Next, the outer shape of the second superconducting coil 120 when the second superconducting wire 112 is used is calculated (step S4). In step S <b> 4, the thickness and length of the tape-like member 123 wound together with the superconducting wire 122 are determined in consideration of the difference between the calculated outer shape and the outer shape of the first superconducting coil 110.

  For example, when the average thickness of the first superconducting wire 112 is 0.34 mm and the average thickness of the second superconducting wire 122 is 0.30 mm, the tape-like member 123 having an average thickness of 0.04 mm is wound together. Decide what to do.

  Next, the remaining superconducting wire 122 is wound with the tape-shaped member 123 so that the outer shape is the same as the outer shape of the first superconducting coil 110 and the same number of turns as the first superconducting coil 110. Thus, the second superconducting coil 120 is formed (step S5). In step S5, the tape-shaped member 123 determined in step S4 and the superconducting wire 122 are wound around the reel 121 in a state where they are overlapped. The method of co-winding is not particularly limited as in the method of winding the superconducting wire 110 constituting the first superconducting coil 110.

  In the present embodiment, the superconducting wire 122 is wound together with the tape-like member 123 in all the length directions of the superconducting wire 122. For this reason, the current density of the second superconducting coil 120 becomes equal.

  Next, the first superconducting coil and the remaining superconducting coil are connected (step S6). In this step S6, for example, the first and second superconducting coils 110 and 120 are stacked, and the terminal portions of the superconducting wires 112 and 122 of the first and second superconducting coils 110 and 120 are pulled out. In the present embodiment, the outermost ends of the superconducting wires 112 and 122 are drawn out and electrically connected to each other.

  By performing the above steps, the superconducting coil body 100 shown in FIGS. 1 to 3 can be manufactured. In addition, the above-mentioned manufacturing method is an example, and may include another process, and you may change the order of a process.

  Next, the effects of the superconducting coil body 100 and the manufacturing method thereof according to the present embodiment will be described.

  As shown in FIG. 10, the present inventor paid attention to the fact that when a plurality of superconducting coils formed using a superconducting wire having a variation in thickness are connected, the superconducting wire may be caught and broken due to the difference in outer shape. . Therefore, the present inventor manufactured a superconducting coil by using the superconducting wire disclosed in Non-Patent Document 2 and winding the superconducting wire with the number of turns of 300 turns with the inner diameter of the cylindrical winding frame being 100 mm. As a result, the outer diameter was 256 mm when the thickness of the superconducting wire was 0.26 mm, and the outer diameter was 304 mm when the thickness of the superconducting wire was 0.34 mm. That is, when the variation in the average thickness of the superconducting wire was 0.08 mm, it was confirmed that the difference in the outer diameter of the superconducting coil was 48 mm. For this reason, when the respective superconducting coils are connected, the difference in outer diameter is large, so that there is a problem that the superconducting wire is caught and broken by the step and the characteristics of the superconducting coil deteriorate.

  Therefore, in the present embodiment, the remainder of the first superconducting coil 110 having the largest outer diameter is the same as that of the first superconducting coil 110, and the remaining number of turns is the same as the number of turns of the first superconducting coil 110. The remaining superconducting coil (second superconducting coil 120) is formed by winding the superconducting wire (second superconducting wire 122) together with the tape-like member 123. Thereby, the external shape of the 1st superconducting coil 110 and the 2nd superconducting coil 120 can be arranged. For this reason, it is possible to suppress the superconducting wires 112 and 122 from being caught in the connection between the first superconducting coil 110 and the second superconducting coil 120. Therefore, since it is possible to prevent the superconducting wires 112 and 122 from being broken, the superconducting coil body 100 in which the first superconducting coil 110 and the second superconducting coil 120 formed using these superconducting wires 112 and 122 are connected. The deterioration of the characteristics can be suppressed.

  In particular, even when the number of turns increases, the superconducting coil having the same outer diameter can be produced by the tape-like member 123. For this reason, deterioration of the characteristics of the superconducting coil body 100 can be suppressed.

  Moreover, since the number of turns (number of turns) of the first superconducting coil 110 and the second superconducting coil 120 is the same, the accuracy of the magnetic field can be improved. For this reason, the superconducting coil body 100 in the present embodiment can be suitably used for MRI or the like.

  Moreover, in this Embodiment, the superconducting wire 112 with the largest average thickness has the insulating material 112g which coat | covered the whole outer periphery. For this reason, since the 1st superconducting coil 110 can prevent a short circuit, the 1st superconducting coil 110 can be formed, without winding together a tape-shaped member. In this case, the first superconducting coil 110 can be simplified and formed.

  Here, in the present embodiment, the superconducting coil body 100 has been described by taking as an example a structure in which the first and second superconducting coils 110 and 120 are connected. However, the superconducting coil body of the present invention has two superconducting coils. The connection body is not particularly limited. The superconducting coil body of the present invention includes a connection body of three or more superconducting coils.

  A superconducting coil body to which three or more superconducting coils are connected has the same outer shape between the superconducting coils to be connected, for example, as shown in FIG. That is, the difference D1 between the outer edges of the first superconducting coil 110 and the second superconducting coil 120 is less than or equal to the allowable bending strain of the superconducting wires 112 and 122 (for example, 5 mm or less), and the second superconducting coil 120 and the third superconducting coil The difference D2 of the outer edge with the superconducting coil 130 is less than the allowable bending strain of the superconducting wires 112 and 122 (for example, 5 mm or less). In other words, the difference between the outer diameter R110 of the first superconducting coil 110 and the outer diameter R120 of the second superconducting coil 120 is less than or equal to twice the allowable bending strain of the superconducting wires 112 and 122 (for example, 10 mm or less). The difference between the outer diameter R120 of the superconducting coil 120 and the outer diameter R130 of the third superconducting coil 130 is not more than twice the allowable bending strain of the superconducting wire (for example, 10 mm or less).

(Embodiment 2)
A superconducting coil body in the present embodiment will be described with reference to FIG. The superconducting coil body in the present embodiment has basically the same configuration as the superconducting coil body in the first embodiment, but differs in the configuration of the first superconducting coil 110 as shown in FIG. Yes.

  Specifically, the first superconducting coil 110 includes a superconducting wire 112 and a tape-like member 113 wound together with the superconducting wire 112. The average thickness of the tape-like member 113 constituting the first superconducting coil 110 is different from the average thickness of the tape-like member 123 constituting the second superconducting coil 120. In the present embodiment, since the average thickness of the superconducting wire 112 constituting the first superconducting coil 110 is larger than the average thickness of the superconducting wire 122 constituting the second superconducting coil 120, the first superconducting coil 110 is constituted. The average thickness of the tape-like member 113 is smaller than the average thickness of the tape-like member 123 constituting the second superconducting coil 120.

  Here, the average thickness of the tape-like members 113 and 123 means an average value of thicknesses measured at 50 points or more per 1 m in the longitudinal direction.

  Since the other structure of the tape-shaped member 113 is the same as that of the tape-shaped member 123 described in the first embodiment, the description thereof will not be repeated.

  Moreover, the superconducting wire 112 in the present embodiment may or may not include the insulating material 112g shown in FIGS. 4 and 5.

  Then, the manufacturing method of the superconducting coil body in this Embodiment is demonstrated. The method for manufacturing the superconducting coil body in the present embodiment basically has the same configuration as the method for manufacturing the superconducting coil body in the first embodiment, but differs in the method for forming the first superconducting coil 110. Yes.

  Specifically, a plurality of superconducting wires 112 and 122 are prepared (step S1). Next, the first superconducting wire having the largest thickness is specified (step S2). Since steps S1 and S2 are the same as steps S1 and S2 of the first embodiment, description thereof will not be repeated.

  Next, the outer diameters of the first and second superconducting coils 110 and 120 are designed from the first and second superconducting wires 112 and 122, and the outer diameters of the first and second superconducting wires 110 and 120 are designed. The tape-shaped members 113 and 123 that are co-wound with 112 are specified (step S4).

  Next, the first superconducting wire 112 and the tape-like member 113 are wound together to form the superconducting coil 110 (step S3). Further, the second superconducting wire 122 and the tape-like member 123 are wound together to form the second superconducting coil 120 (step S5). Steps S3 and S5 are the same as step S5 of the first embodiment, and therefore description thereof will not be repeated.

  Next, the first superconducting wire 112 and the second superconducting wire 122 are connected (step S6). Since step S6 is the same as step S6 of the first embodiment, description thereof will not be repeated.

  By performing the above steps S1 to S6, the superconducting coil body in the present embodiment can be manufactured.

  According to the superconducting coil body and the manufacturing method thereof in the present embodiment, the plurality of superconducting coils (first and second superconducting coils 110, 120) have the same outer shape, and the plurality of superconducting coils (first and second). The average thicknesses of the tape-shaped members 113 and 123 wound together in the superconducting coils 110 and 120) are different. Thus, by winding the tape-like members 113 and 123 together with the superconducting wires 112 and 122, superconducting coils (first and second superconducting coils 110 and 120) having a desired outer diameter and the same outer diameter can be produced. Therefore, deterioration of characteristics can be suppressed and a superconducting coil body having a desired size can be manufactured.

  Here, in the present embodiment, in the first superconducting coil 110, the superconducting wire 112 is wound with the tape-like member 113 in all of the length direction, but with the tape-like member 113 in a part of the length direction. It may be wound.

(Embodiment 3)
With reference to FIG. 9, the superconducting coil body in the present embodiment will be described. The superconducting coil body in the present embodiment has basically the same configuration as the superconducting coil body in the first embodiment, but differs in the configuration of the second superconducting coil 120 as shown in FIG. Yes.

  Specifically, in the second superconducting coil 120, the superconducting wire 122 wound together with the tape-like member 123 is wound together with the tape-like member 123 in a part in the length direction. In the present embodiment, the superconducting wire 122 is wound around the reel 111 side (inner peripheral side) without the tape-like member being wound, and the tape-like member is wound around the outer peripheral side together with the superconducting wire 122. . The part in the length direction is not particularly limited to the outer peripheral side, and may be the inner peripheral side or the central part.

  Then, the manufacturing method of the superconducting coil body in this Embodiment is demonstrated. The method for manufacturing the superconducting coil body in the present embodiment is basically the same as the method for manufacturing the superconducting coil body in the first and second embodiments, but differs in the method for forming the second superconducting coil 120.

  Specifically, in step S <b> 4 for forming the second superconducting coil 120, the superconducting wire 122 is wound together with the tape-like member 123 in a part of the length of the superconducting wire 122. In the present embodiment, only the superconducting wire 122 is wound around the winding frame 121 with a predetermined number of turns, and then the superconducting wire 122 is wound together with the tape-like member 123. Note that the tape-like member 123 may be wound together only at the beginning of winding of the superconducting wire 122, or the superconducting wire 122 and the tape-shaped member 123 may be wound together while avoiding the start and end of winding.

  According to the superconducting coil body and the manufacturing method thereof in the present embodiment, superconducting wire 122 is wound together with tape-like member 123 in a part of the length of superconducting wire 122. Regardless of the thickness of the superconducting wires 112 and 122, the thickness of the tape-like member 123, and the like, and even if it is difficult to obtain the tape-like member 123 having a desired thickness, the second superconductivity wound together with the tape-like member 123 The outer shape of the coil 120 can be easily adjusted. For this reason, a superconducting coil can be easily formed in the same external shape.

  Here, the present embodiment can also be applied to the superconducting coil body and the manufacturing method thereof according to the second embodiment. Moreover, when applied to Embodiment 2, it is applicable not only to the second superconducting coil but also to the first superconducting coil.

  Although the embodiments of the present invention have been described as described above, it is also planned from the beginning to combine the features of each embodiment as appropriate. In addition, it should be considered that the embodiment disclosed this time is illustrative and not restrictive in all respects. The scope of the present invention is shown not by the above-described embodiment but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

  100 superconducting coil body, 110 superconducting coil, 111, 121 winding frame, 112, 122 superconducting wire, 112a superconductor, 112b sheath part, 112c substrate, 112d intermediate layer, 112e superconducting layer, 112f stabilization layer, 112g insulating material, 113 , 123 tape-shaped member, 120 second superconducting coil, 130 third superconducting coil.

Claims (11)

Preparing a plurality of superconducting wires;
A first superconducting wire having the largest average thickness is identified from among the superconducting wires, the outer shape of the first superconducting coil formed by winding the first superconducting wire is designed, and the first superconducting wire forming said Ri by the winding a first superconducting coil,
Winding the remaining superconducting wire together with the tape-like member so that the difference between the outer edges of the first superconducting coil is 5 mm or less and the number of turns is the same as the number of turns of the first superconducting coil. a step of designing the outer shape of the superconducting coils of the balance, the superconducting wire of the remainder to form a superconducting coil by Ri the remainder to be wound together with the tape-like member which is formed by,
A method of manufacturing a superconducting coil body, comprising: connecting the first superconducting coil and the remaining superconducting coil so that characteristics of the plurality of superconducting wires are not deteriorated . In the step of forming the first superconducting coil, the first superconducting coil is formed by winding the first superconducting wire together with a tape-shaped member,
2. The method of manufacturing a superconducting coil body according to claim 1, wherein the number of turns of the tape-like member in the first superconducting coil is different from the number of turns of at least one of the tape-like members in the remaining superconducting coil. The superconducting coil according to claim 1 or 2 , wherein in the step of forming the remaining superconducting coil, at least one selected from the group consisting of a polyimide tape, a prepreg tape, and a polyamide tape is used as the tape-like member. Body manufacturing method. 4. The method according to claim 1 , wherein in the step of forming the remaining superconducting coil, the remaining superconducting wire is wound together with the tape-like member in all of the lengthwise direction of the remaining superconducting wire. Manufacturing method of superconducting coil body. 4. The method according to claim 1 , wherein in the step of forming the remaining superconducting coil, the remaining superconducting wire is wound together with the tape-shaped member in a part of the remaining superconducting wire in a length direction. The manufacturing method of the superconducting coil body of description. A superconducting coil body in which a plurality of superconducting coils formed by using a plurality of superconducting wires having different average thicknesses and covered with an insulating material are connected so as not to deteriorate the characteristics of the plurality of superconducting wires. And
The difference between the outer edges of the plurality of superconducting coils is 5 mm or less ,
In the plurality of superconducting coils, the superconducting wire and the tape-shaped member are wound together,
The number of turns of the tape-like member in one superconducting coil of the plurality of superconducting coils is different from the number of turns of the tape-like member in another superconducting coil of the plurality of superconducting coils. . A superconducting coil body in which a plurality of superconducting coils formed by using a plurality of superconducting wires having different average thicknesses and covered with an insulating material are connected so as not to deteriorate the characteristics of the plurality of superconducting wires. And
The difference between the outer edges of the plurality of superconducting coils is 5 mm or less ,
At least one superconducting coil of the plurality of superconducting coils has the superconducting wire and a tape-shaped member wound together, and at least one superconducting coil of the plurality of superconducting coils is the tape-shaped member. A superconducting coil body, wherein the superconducting wire is wound in a state where it is not co-wound. A superconducting coil body in which a plurality of superconducting coils in which a superconducting wire and a tape-like member are wound together are connected ,
The plurality of superconducting coils are formed using a plurality of superconducting wires having at least one average thickness different from each other,
The plurality of superconducting coils are connected so as not to deteriorate the characteristics of the plurality of superconducting wires,
The difference between the outer edges of the plurality of superconducting coils is 5 mm or less ,
A superconducting coil body, wherein the tape-shaped members wound together in the plurality of superconducting coils have different average thicknesses. The superconducting coil body according to any one of claims 6 to 8 , wherein the tape-shaped member is at least one selected from the group consisting of a polyimide tape, a prepreg tape, and a polyamide tape. The superconducting coil body according to any one of claims 6 to 9 , wherein the superconducting wire wound together with the tape-like member is wound together with the tape-like member in all length directions. The superconducting coil body according to any one of claims 6 to 9 , wherein the superconducting wire wound together with the tape-like member is wound together with the tape-like member in a part in a length direction.

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