JP2012038812A - Superconducting coil device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a superconducting coil device with better stability of a superconducting coil than conventional superconducting coil devices.SOLUTION: In a first superconducting coil device 10A, superconducting coils 11a, 11b are made by winding superconducting tape wires 12a, 12b on a bobbin 16 and stacked multiply in the axial direction of the bobbin 16. The bobbin 16 of the multiply stacked superconducting coils 11a, 11b is formed as an integrated single structure.

Description

  The present invention relates to a superconducting coil device including a superconducting coil.

  When a pancake coil formed by winding a superconducting wire in a radial direction on a winding frame is actually used in a device, it is generally used by stacking a plurality of pieces in the axial direction, and between adjacent pancake coils in the axial direction. Need to be fixed.

  As a method of fixing between adjacent pancake coils in the axial direction, a method of fixing by bonding is known, but the adhesive force is loosened by the electromagnetic force during fixed energization, and the pancake coil rotates. May end up. When the pancake coil is rotated, the outer diameter of each pancake coil is shifted, and a technique for avoiding this has been proposed.

  For example, in JP 2009-16622 A (Patent Document 1), the winding frames are connected by a mechanical structure to fix the pancake coils adjacent in the axial direction and prevent rotation. Yes.

JP 2009-16622 A

  In order to electrically connect each pancake coil, a method of soldering a metal plate to the outermost periphery of pancake coils adjacent in the axial direction is employed.

  However, if the outer diameter of each pancake coil is shifted, a gap is formed between the metal plate and the pancake coil, so that the amount of solder increases and the connection resistance increases. An increase in connection resistance is an event that should be avoided from the viewpoint of the stability of the superconducting coil.

  In order to make the solder connection, it is necessary to heat the pancake coil. However, if the dimensions are shifted, the heating time increases, and the superconducting characteristics of the pancake coil are deteriorated. The deterioration of the superconducting characteristics of the pancake coil is an event that should be avoided from the viewpoint of the stability of the superconducting coil.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a superconducting coil device in which the stability of the superconducting coil is further improved as compared with the conventional superconducting coil device.

  In order to solve the above-described problem, a superconducting coil device according to an embodiment of the present invention is a superconducting coil in which a plurality of superconducting coils formed by winding a superconducting tape wire around a winding frame are stacked in the axial direction of the winding frame. The laminated superconducting coil winding frame is configured as an integrated single structure.

  ADVANTAGE OF THE INVENTION According to this invention, the superconducting coil apparatus which improved stability compared with the past can be provided.

It is the schematic which shows the structure of the superconducting coil apparatus which concerns on the 1st Embodiment of this invention, (A) is a top view of the superconducting coil apparatus which concerns on the 1st Embodiment of this invention, (B) is (A). Sectional drawing which follows the II line shown by FIG. Explanatory drawing which shows the connection state of the superconducting tape wire which is an example of the superconductor which comprises each superconducting coil of the superconducting coil unit in the superconducting coil apparatus which concerns on the 1st Embodiment of this invention. FIG. 3 is an arrow view from the direction of arrow A shown in FIG. 2. It is the schematic which shows the structure of the superconducting coil apparatus which concerns on the 2nd Embodiment of this invention, (A) is a top view of the superconducting coil apparatus which concerns on the 2nd Embodiment of this invention, (B) is (A). Sectional drawing which follows the II-II line | wire shown by FIG. Explanatory drawing which shows the connection state of the superconducting tape wire which is an example of the superconductor which comprises each superconducting coil of the superconducting coil unit in the superconducting coil apparatus which concerns on the 2nd Embodiment of this invention. The arrow view from the direction of arrow B shown by FIG. Schematic which shows the structure of the superconducting coil apparatus which concerns on the 3rd Embodiment of this invention. Sectional drawing which follows the III-III line | wire shown by FIG. Sectional drawing which follows the IV-IV line | wire shown by FIG. It is the schematic which shows the structure of the superconducting coil apparatus which concerns on the 4th Embodiment of this invention, (A) is a top view of the superconducting coil apparatus which concerns on the 4th Embodiment of this invention, (B) is (A). Sectional drawing which follows the VV line shown by FIG. Explanatory drawing which shows the structure of the electrode connected with the superconducting tape wire which is an example of the superconductor which comprises the superconducting coil arrange | positioned at the end of the axial direction of the winding frame in the superconducting coil apparatus which concerns on the 4th Embodiment of this invention. . The description which shows the structure of the electrode connected with the superconducting tape wire which is an example of the superconductor which comprises the superconducting coil arrange | positioned at the other end of the axial direction of the winding frame in the superconducting coil apparatus which concerns on the 4th Embodiment of this invention. Figure. It is the schematic which shows the structure of the superconducting coil apparatus which concerns on the 5th Embodiment of this invention, (A) is a top view of the superconducting coil apparatus which concerns on the 5th Embodiment of this invention, (B) is (A). Sectional drawing which follows the VI-VI line shown by FIG. It is the schematic which shows the structure of the superconducting coil apparatus which concerns on the 6th Embodiment of this invention, (A) is a top view of the superconducting coil apparatus which concerns on the 6th Embodiment of this invention, (B) is (A). Sectional drawing which follows the VII-VII line shown by FIG. It is the schematic which shows the structure of the superconducting coil apparatus which concerns on the 7th Embodiment of this invention, (A) is a top view of the superconducting coil apparatus which concerns on the 7th Embodiment of this invention, (B) is (A). Sectional drawing which follows the VIII-VIII line shown by FIG. It is the schematic which shows the structure of the superconducting coil apparatus which concerns on the 8th Embodiment of this invention, (A) is a top view of the superconducting coil apparatus which concerns on the 8th Embodiment of this invention, (B) is (A). Sectional drawing which follows the IX-IX line shown by FIG. Explanatory drawing which shows the connection state of the superconducting tape wire which is an example of the superconductor which comprises each superconducting coil of the superconducting coil unit in the superconducting coil apparatus which concerns on the 9th Embodiment of this invention.

Hereinafter, superconducting coil device 10 (10A to 10I), which is an example of 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 (FIG. 1 (A) and FIG. 1 (B)) is a superconducting coil device (hereinafter referred to as “first superconducting coil device”) which is an example of the superconducting coil device according to the first embodiment of the present invention. FIG. 1A is a plan view of the first superconducting coil device 10A, and FIG. 1B is taken along the line I-I shown in FIG. 1A. It is sectional drawing. FIG. 2 is an explanatory view showing a connection state of superconducting tape wires 12a and 12b which are examples of superconductors constituting the superconducting coils 11a and 11b of the superconducting coil unit 11 in the first superconducting coil device 10A. FIG. 3 is an arrow view from the direction of arrow A shown in FIG.

  As shown in FIG. 1, the first superconducting coil device 10A includes a plurality of superconducting coil units 11 in which, for example, six superconducting coil units 11a and 11b are arranged so as to be adjacent to each other coaxially. The superconducting tape wire 12b at the outermost position of the superconducting coil 11b of the superconducting coil unit 11 and the superconducting tape wire 12a at the outermost position of the superconducting coil 11a are made of a conductive material structure such as copper (Cu), for example. They are electrically connected by a copper plate 13 which is an example of (conductor).

  For joining the superconducting tape wires 12a and 12b and the copper plate 13, for example, a joining material having a low connection resistance such as solder is used. After the superconducting tape wires 12a and 12b and the copper plate 13 are joined, in the first superconducting coil device 10A shown in FIG. 1, the six superconducting coils in which the copper plate 13 including the winding frame 16 is joined. The entire unit 11 is impregnated with resin.

  In the first superconducting coil device 10A, as shown in FIG. 1B, six superconducting coil units 11 are arranged. These superconducting coil units 11 are, for example, non-conductive fiber reinforced plastics. It is formed by winding superconducting tape wires 12a and 12b around one common winding frame 16 formed of an insulator such as (FRP: Fiber Reinforced Plastics).

  As shown in FIGS. 2 and 3, the superconducting coil unit 11 includes a copper (Cu) electrode (hereinafter referred to as “copper electrode”) 17 and a superconducting tape wire 12a as an example of a material exhibiting high conductivity. 12b is electrically connected by soldering in the opposite direction, and after being mechanically fixed to the winding frame 16 by a fixing tool 18 such as a screw (screw), the superconducting tape wires 12a and 12b are wound, The superconducting coil 11a and the superconducting coil 11b are arranged so as to be adjacent to each other coaxially.

  The first superconducting coil device 10 </ b> A configured as described above uses a winding frame 16 configured as an integrated single structure, that is, a winding frame 16 common to each superconducting coil unit 11. Therefore, the superconducting coil unit 11 is not displaced, and the outer diameter can be made uniform.

  Since the superconducting coil unit 11 has the same outer diameter without being displaced, there is no gap when the superconducting coil unit 11 is soldered with the copper plate 13, and the amount of bonding material such as solder can be reduced. The connection resistance between the coil units 11 can be reduced. Moreover, since the heating time of the joining material at the time of joining is also reduced, the risk of degrading the superconducting characteristics of the superconducting coil unit 11 (superconducting coils 11a and 11b) can be reduced.

  As described above, the first superconducting coil device 10A in which the connection resistance between the superconducting coil units 11 is reduced and the risk of lowering the superconducting characteristics of the superconducting coil units 11 (superconducting coils 11a and 11b) is reduced. Stability can be improved as compared to the apparatus.

  In the present embodiment, the copper plate 13 and the electrode 17 of the first superconducting coil device 10A have been described using copper as a material, but these are not limited to the case using copper as a material. Instead of copper, a material (for example, silver, gold, superconducting tape wire, etc.) having the same or better conductivity than copper can be used.

[Second Embodiment]
FIG. 4 (FIGS. 4A and 4B) is a superconducting coil device (hereinafter referred to as “second superconducting coil device”) which is an example of the superconducting coil device according to the second embodiment of the present invention. FIG. 4A is a plan view of the second superconducting coil device 10B, and FIG. 4B is taken along the line II-II shown in FIG. 4A. It is sectional drawing. FIG. 5 is an explanatory diagram showing a connection state of superconducting tape wires 12a and 12b, which are examples of superconductors constituting the superconducting coils 11a and 11b of the superconducting coil unit 11 in the second superconducting coil device 10B. 6 is an arrow view from the direction of arrow B shown in FIG.

  The second superconducting coil device 10B differs from the first superconducting coil device 10A in the members and methods used to fix the electrode 17 to the winding frame 16, but the other points are not substantially different. Therefore, constituent elements that are not substantially different from the first superconducting coil device 10A are assigned the same reference numerals and description thereof is omitted.

  The second superconducting coil device 10B includes, for example, a plurality of superconducting coil units 11 in which two superconducting coils 11a and 11b are arranged so as to be adjacent to each other coaxially, and a plurality of superconducting coils 11b of the adjacent superconducting coil units 11 are arranged. The superconducting tape wire 12b at the outermost peripheral position and the superconducting tape wire 12a at the outermost peripheral position of the superconducting coil 11a are electrically connected by, for example, a copper plate 13.

  For joining the superconducting tape wires 12a and 12b and the copper plate 13, for example, a joining material having a low connection resistance such as solder is used. After the superconducting tape wires 12a and 12b and the copper plate 13 are joined, the entire resin is impregnated in the same manner as the first superconducting coil device 10A.

  As shown in FIGS. 5 and 6, the superconducting coil unit 11 of the second superconducting coil device 10B electrically connects the copper electrode 17 and the superconducting tape wires 12a and 12b with solder in the reverse direction. For example, a fixing tool 21 such as a pin is inserted into the frame 16, and the fixing tool 21 and the winding frame 16 are bonded and fixed with an adhesive. Thereafter, the superconducting tape wire 12a and the superconducting tape wire 12b are wound in the radial direction, and the superconducting coil 11a and the superconducting coil 11b are disposed so as to be coaxially adjacent to each other.

  The second superconducting coil device 10B configured as described above has the same effect as that of the first superconducting coil device 10A, that is, the superconducting coil unit 11 is not displaced, and the outer diameter can be made uniform. In addition to improving the stability of the superconducting coil device, as shown in FIG. 5, as shown in FIG. 5, a hole for inserting and fixing the fixture 21 into the winding frame 16 is provided in the copper electrode 17. Since the copper electrode 17 can be fixed from the outside, it can be easily fixed even when the inner diameter of the winding frame 16 is small or the axial length of the winding frame 16 is long.

  Note that the copper electrode 17 shown in FIG. 5 can be applied not only to the second superconducting coil device 10B but also to other superconducting coil devices such as the first superconducting coil device 10A.

[Third Embodiment]
FIG. 7 is a schematic diagram showing the 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. 9 and 9 are a cross-sectional view taken along line III-III and a cross-sectional view taken along line IV-IV shown in FIG. 7, respectively.

  The third superconducting coil device 10C has a fixed position to the winding frame 16 of the superconducting tape wires 12a and 12b forming the superconducting coil unit 11, the one superconducting coil unit 11 and the like with respect to the first superconducting coil device 10A. Although it differs in the connection position of the copper plate 13 which connects between this and the superconducting coil unit 11, it is not substantially different about another point. Therefore, constituent elements that are not substantially different from the first superconducting coil device 10A are assigned the same reference numerals and description thereof is omitted.

  Similarly to the first superconducting coil device 10A and the like, the third superconducting coil device 10C includes, for example, a plurality of superconducting coil units 11 in which two superconducting coils 11a and 11b are coaxially adjacent to each other. Then, the superconducting tape wire 12b at the outermost position of the superconducting coil 11b of the adjacent superconducting coil unit 11 and the superconducting tape wire 12a at the outermost position of the superconducting coil 11a are electrically connected by the copper plate 13, and the whole Impregnate with resin.

  However, in the third superconducting coil device 10C, as shown in FIGS. 7 to 9, when the superconducting coil unit 11 is formed, the fixing positions of the superconducting tape wires 12a and 12b forming the respective superconducting coil units 11 are set. The position is changed with respect to the circumferential direction of the winding frame 16 and it is embedded and mechanically fixed by a fixing tool 18 such as a screw. Further, since the fixing positions of the superconducting tape wires 12a and 12b are different from each other in the circumferential direction of the winding frame 16, the superconducting tape wire 12b and the superconducting coil at the outermost peripheral position of the superconducting coil 11b of the adjacent superconducting coil unit 11 are used. The position of the copper plate 13 that electrically connects the superconducting tape wire 12a located at the outermost periphery of 11a is also different.

  In the third superconducting coil device 10 </ b> C configured as described above, in addition to the effect exhibited by the first superconducting coil device 10 </ b> A, the position of the adjacent copper electrode 17 fixed to the winding frame 16 is in the circumferential direction of the winding frame 16. Due to the deviation, the insulation distance becomes longer and the withstand voltage characteristic can be improved. Moreover, since the copper plate 13 is also displaced in the circumferential direction, the insulation distance becomes long and the withstand voltage characteristics can be improved. Therefore, it is needless to say that the conventional superconducting coil device is used, and the third superconducting coil device 10A, which can improve the stability more than the conventional superconducting coil device, can be further improved in stability. A superconducting coil device 10C can be provided.

[Fourth Embodiment]
FIG. 10 (FIG. 10 (A) and FIG. 10 (B)) shows a superconducting coil device (hereinafter referred to as “fourth superconducting coil device”) which is an example of the superconducting coil device according to the fourth embodiment of the present invention. FIG. 10A is a plan view of the fourth superconducting coil device 10D, and FIG. 10B is a VV line shown in FIG. 10A. It is sectional drawing which follows.

  The fourth superconducting coil device 10D is formed with electrodes 25 that protrude in the vertical direction from both axial end surfaces (upper and lower surfaces in FIG. 10) of the winding frame 16 with respect to the first superconducting coil device 10A. However, the other points are not substantially different. Therefore, constituent elements that are not substantially different from the first superconducting coil device 10A are assigned the same reference numerals and description thereof is omitted.

  The fourth superconducting coil device 10D includes superconducting tape wires 12a and 12b as shown in FIGS. 11 and 12, which will be described later, with respect to superconducting coils 31a and 31b arranged at both ends (upper and lower ends) shown in FIG. Each is composed by winding. On the other hand, the other superconducting coil unit 11 disposed between the superconducting coils 31a and 31b is formed in the same manner as the first superconducting coil device 10A and the like.

  After the fourth superconducting coil device 10D is electrically connected between the superconducting coil 31b and the superconducting coil unit 11, between the superconducting coil units 11, and between the superconducting coil 31a and the superconducting coil unit 11 by the copper plate 13. Like the first superconducting coil device 10A, the whole is impregnated with resin.

  FIG. 11 shows the configuration of the electrode 25 connected to the superconducting tape wire 12b constituting the superconducting coil 31b disposed at one end (the upper end side shown in FIG. 10) of the winding frame 16 in the fourth superconducting coil device 10D. FIG. 12 is a superconducting tape wire 12a constituting a superconducting coil 31a disposed at the other axial end of the winding frame 16 (lower end side shown in FIG. 10) in the fourth superconducting coil device 10D. It is explanatory drawing which shows the structure of the electrode 25 connected with.

  As shown in FIGS. 11 and 12, the width is larger than the superconducting tape wire 12b and the superconducting tape wire 12a, that is, in FIG. 11 and FIG. 12, it is longer in the vertical direction than the superconducting tape wire 12b and the superconducting tape wire 12a. Superconducting tape wire 12b and superconducting tape wire 12a are electrically connected to copper electrode 25 by a bonding material such as solder. Thereafter, as shown in FIG. 10, the copper electrode 25 is embedded in the positions of the upper end and the lower end with respect to the axial direction of the winding frame 16, and is mechanically fixed by a fixing tool 18 such as a screw, and the superconducting tape. The wire 12b and the superconducting tape wire 12a are wound to form the superconducting coil 31b and the superconducting coil 31a.

  In the fourth superconducting coil device 10D configured as described above, in addition to the effects exhibited by the first superconducting coil device 10A, a copper electrode 25, which is an electrode for conducting current, is fixed to the winding frame 16. Therefore, the strength of the electrode for energizing the current can be improved as compared with the conventional superconducting coil device and the first superconducting coil device 10A in which the copper electrode 25 is not fixed to the winding frame 16. That is, the peeling from the superconducting coil 31 of the current-carrying copper electrode 25 that can be caused by electromagnetic force or thermal stress at the time of cooling can be suppressed as compared with the conventional superconducting coil device.

  Therefore, it is needless to say that the conventional superconducting coil device is a fourth one that can further improve the stability as compared with the first superconducting coil device 10A that can improve the stability as compared with the conventional superconducting coil device. A superconducting coil device 10D can be provided.

  In the fourth superconducting coil device 10D, it has been described that the entire resin is impregnated like the first superconducting coil device 10A. However, when the resin is impregnated, other superconducting coil devices or the like of the copper electrode 25 are used. In some cases, a fourth superconducting coil device 10D may be provided in which a part used for connection with an external device is masked to prevent the part from being impregnated with resin.

[Fifth Embodiment]
FIG. 13 (FIG. 13 (A) and FIG. 13 (B)) shows a superconducting coil device (hereinafter referred to as “fifth superconducting coil device”) which is an example of the superconducting coil device according to the fifth embodiment of the present invention. FIG. 13 (A) is a plan view of the fifth superconducting coil device 10E, and FIG. 13 (B) is a VI-VI line shown in FIG. 13 (A). It is sectional drawing which follows.

  The fifth superconducting coil device 10E is a non-conductive FRP plate (hereinafter simply referred to as “FRP”) as an example of an insulator from the viewpoint of improving insulation characteristics between the superconducting coil units 11 with respect to the first superconducting coil device 10A. It is different in that it is inserted "33"), but the other points are not substantially different. Therefore, constituent elements that are not substantially different from the first superconducting coil device 10A are assigned the same reference numerals and description thereof is omitted.

  The fifth superconducting coil device 10E forms a superconducting coil unit 11 similarly to the first superconducting coil device 10A and the like, and as shown in FIG. 13, between the superconducting coil unit 11 and the superconducting coil unit 11. Then, an FRP plate 33 as an insulator is inserted and configured in the same manner as the first superconducting coil device 10A.

  In the fifth superconducting coil device 10E configured as described above, in addition to the effects exhibited by the first superconducting coil device 10A, the FRP plate 33 is inserted between the superconducting coil units 11, so that the insulation characteristics are improved. The withstand voltage characteristic is improved. Therefore, it goes without saying that the conventional superconducting coil device, the fifth superconductivity is further improved in stability as compared with the first superconducting coil device 10A that can improve the stability as compared with the conventional superconducting coil device. A coil device 10E can be provided.

  In the fifth superconducting coil device 10E shown in FIG. 13, the example in which the FRP plate 33 is inserted between the superconducting coil units 11 is shown. However, the FRP plate 33 is not necessarily provided between the superconducting coil units 11. It does not have to be inserted. That is, the fifth superconducting coil device 10 </ b> E includes all embodiments in which the FRP plates 33 are inserted in one or more between the superconducting coil units 11.

  From the viewpoint of thermal conductivity, the insulator inserted between the superconducting coil units 11 is preferably selected so as to be equal to or higher than the thermal conductivity of the resin to be impregnated, but it is not necessarily impregnated. It is not necessary to have a thermal conductivity higher than that of the resin.

[Sixth Embodiment]
FIG. 14 (FIGS. 14A and 14B) shows a superconducting coil device (hereinafter referred to as “sixth superconducting coil device”) as an example of the superconducting coil device according to the sixth embodiment of the present invention. FIG. 14A is a plan view of the sixth superconducting coil device 10F, and FIG. 14B is a VII-VII line shown in FIG. 14A. It is sectional drawing which follows.

  The sixth superconducting coil device 10F has a higher thermal conductivity than the first superconducting coil device 10A between the superconducting coil units 11 from the viewpoint of improving insulation characteristics and thermal conductivity (hereinafter referred to as “high thermal conductor”). And the point that the aluminum nitride plate 35 as an insulator is inserted, but the other points are not substantially different. Therefore, constituent elements that are not substantially different from the first superconducting coil device 10A are assigned the same reference numerals and description thereof is omitted.

  Similar to the first superconducting coil device 10A and the like, the sixth superconducting coil device 10F forms a superconducting coil unit 11, and between the superconducting coil unit 11 and the superconducting coil unit 11 as shown in FIG. For example, an insulator having a high thermal conductivity, such as an aluminum nitride plate 35, that is, a high thermal conductor and an insulating material is inserted, and the configuration is the same as that of the first superconducting coil device 10A. The high heat conductor plays a role as a heat radiator that absorbs heat generated in the superconducting coil unit 11 and dissipates the heat to the outside.

  The sixth superconducting coil device 10F configured as described above has an insulator having a high thermal conductivity between the superconducting coil units 11, that is, an insulating property, in addition to the effect exhibited by the first superconducting coil device 10A. Since the aluminum nitride plate 35 which is a heat radiating body (insulating heat radiating body) is inserted, it is possible to provide a superconducting coil device with improved insulation characteristics and heat transfer characteristics, high withstand voltage and excellent heat dissipation. That is, it is possible to provide the sixth superconducting coil device 10F with further improved stability as compared with the first superconducting coil device 10A with improved stability over the conventional superconducting coil device.

  In the sixth superconducting coil device 10F shown in FIG. 14, an example in which the aluminum nitride plate 35 is inserted between each superconducting coil unit 11 is shown, but an aluminum nitride plate is not necessarily provided between each superconducting coil unit 11. 35 need not be inserted. That is, the sixth superconducting coil device 10 </ b> F includes all embodiments in which the aluminum nitride plate 35 is inserted into one or more between the superconducting coil units 11.

  In addition, aluminum nitride (aluminum nitride plate 35) is selected as the insulating heat radiator, but this is an example. For example, various insulators applied as heat sinks such as silicon nitride and boron nitride are used as the insulating heat radiator. Can be applied. This point is the same not only in the present embodiment but also in other embodiments. Furthermore, it is preferable to select the insulating heat radiator so as to be equal to or higher than the thermal conductivity of the resin to be impregnated as a whole, but the thermal conductivity of the insulating heat radiator is not necessarily higher than the thermal conductivity of the resin to be impregnated as a whole. good.

[Seventh Embodiment]
FIG. 15 (FIGS. 15A and 15B) shows a superconducting coil device (hereinafter referred to as “seventh superconducting coil device”) as an example of the superconducting coil device according to the seventh embodiment of the present invention. FIG. 15A is a plan view of the seventh superconducting coil device 10G, and FIG. 15B is a VIII-VIII line shown in FIG. 15A. It is sectional drawing which follows.

  In the seventh superconducting coil device 10G, an aluminum plate 37, which is an example of a high thermal conductor, is inserted between the superconducting coil units 11 with respect to the first superconducting coil device 10A from the viewpoint of improving thermal conductivity (heat dissipation). However, the other points are not substantially different. Therefore, constituent elements that are not substantially different from the first superconducting coil device 10A are assigned the same reference numerals and description thereof is omitted.

  As with the first superconducting coil device 10A and the like, the seventh superconducting coil device 10G forms a superconducting coil unit 11, and between the superconducting coil unit 11 and the superconducting coil unit 11 as shown in FIG. An aluminum plate 37, which is an example of a high thermal conductor (heat radiating body) having a high thermal conductivity, is inserted and configured in the same manner as the first superconducting coil device 10A.

  The seventh superconducting coil device 10G configured as described above has an aluminum plate 37 that is a high thermal conductor having high thermal conductivity between the superconducting coil units 11 in addition to the effects exhibited by the first superconducting coil device 10A. Therefore, a superconducting coil device with improved heat transfer characteristics and excellent heat dissipation can be provided. That is, it is possible to provide the seventh superconducting coil device 10G having further improved stability as compared with the first superconducting coil device 10A having improved stability compared to the conventional superconducting coil device.

  In the seventh superconducting coil device 10G shown in FIG. 15, an example in which the aluminum plate 37 is inserted between the superconducting coil units 11 is shown. However, the aluminum plate 37 is not necessarily provided between the superconducting coil units 11. It does not have to be inserted. That is, the seventh superconducting coil device 10 </ b> G includes all embodiments in which the aluminum plate 37 is inserted into one or more between the superconducting coil units 11.

  Moreover, although aluminum (aluminum plate 37) is selected as the heat radiating body, this is an example, and various materials that are generally applied as heat sinks can be appropriately selected and applied. These points are the same not only in this embodiment but also in other embodiments. Furthermore, it is preferable to select the heat radiating body so as to be equal to or higher than the thermal conductivity of the resin impregnating the whole, but the thermal conductivity of the heat radiating body does not necessarily need to be higher than the thermal conductivity of the resin impregnating the whole.

[Eighth Embodiment]
FIG. 16 (FIG. 16 (A) and FIG. 16 (B)) is a superconducting coil device (hereinafter referred to as “eighth superconducting coil device”) as an example of the superconducting coil device according to the eighth embodiment of the present invention. FIG. 16A is a plan view of the eighth superconducting coil device 10H, and FIG. 16B is a IX-IX line shown in FIG. 16A. It is sectional drawing which follows.

  The eighth superconducting coil device 10H is an insulator between the superconducting coil units 11 from the viewpoint of improving insulation characteristics and thermal conductivity (heat dissipation) between the superconducting coil units 11 with respect to the first superconducting coil device 10A. The difference is that an aluminum plate 37 sandwiched between a certain FRP plate 33 is inserted, but the other points are not substantially different. Therefore, constituent elements that are not substantially different from the first superconducting coil device 10A are assigned the same reference numerals and description thereof is omitted.

  The eighth superconducting coil device 10H forms a superconducting coil unit 11 in the same manner as the first superconducting coil device 10A and the like, and as shown in FIG. 16, between the superconducting coil unit 11 and the superconducting coil unit 11. Two FRP plates 33, which are insulators, are inserted so as to be in contact with the superconducting coil unit 11, and an aluminum plate 37 having a high thermal conductivity is inserted between the two FRP plates 33. Other points are the same as those of the first superconducting coil device 10A described above.

  In other words, the eighth superconducting coil device 10H is configured by stacking two FRP plates 33 in the fifth superconducting coil device 10E instead of one, and inserting an aluminum plate 37 between the two FRP plates 33. Alternatively, the FRP plate 33 is inserted between the aluminum plate 37 and the coil unit 11 with respect to the seventh superconducting coil device 10G.

  In the eighth superconducting coil device 10H configured as described above, the FRP plate 33 which is an insulator is brought into contact with the superconducting coil unit 11 between the superconducting coil units 11 in addition to the effect exhibited by the first superconducting coil device 10A. The aluminum plate 37 having a high thermal conductivity is inserted between the two FRP plates 33, so that the insulation characteristics and the heat transfer characteristics are improved, the withstand voltage is high and the heat dissipation is achieved. An excellent superconducting coil device can be provided. That is, it is possible to provide the eighth superconducting coil device 10H with further improved stability as compared with the first superconducting coil device 10A with improved stability over the conventional superconducting coil device.

  In the eighth superconducting coil device 10H shown in FIG. 16, two FRP plates 33 are inserted between the superconducting coil units 11 so as to come into contact with the superconducting coil unit 11, and the two FRP plates 33 are inserted. Although the aluminum plate 37 is inserted in between, the aspect is arbitrary as long as a high heat conductor is inserted between the superconducting coil units 11 via an insulator, and is not necessarily limited to the example shown in FIG. For example, instead of the two FRP plates 33 and the aluminum plate 37, a plate-like body filled with aluminum in the gap (concave portion) of one FRP plate-like body formed in a U-shape is provided between the superconducting coil units 11. It may be inserted into.

[Ninth Embodiment]
A superconducting coil device (hereinafter referred to as a “ninth superconducting coil device”) 10I, which is an example of a superconducting coil device according to the ninth embodiment of the present invention, is compared with the first superconducting coil device 10A. The difference is that a wide superconducting tape wire 39 is connected between the superconducting tape wires 12a and 12b constituting the superconducting coils 11a and 11b of the superconducting coil unit 11 and the copper electrode 17. Are not substantially different. Therefore, constituent elements that are not substantially different from the first superconducting coil device 10A are assigned the same reference numerals and description thereof is omitted.

  FIG. 17 is an explanatory diagram showing a connection state of superconducting tape wires 12a and 12b, which are examples of superconductors constituting the superconducting coils 11a and 11b of the superconducting coil unit 11 in the ninth superconducting coil device 10I.

  In the superconducting coil unit 11 in the ninth superconducting coil device 10I, as shown in FIG. 17, a wide superconducting tape wire 39 is joined to the copper electrode 17 with solder which is an example of a joining material having a low connection resistance. Superconducting tape wire 12a and superconducting tape wire 12b are soldered and joined.

  The copper electrode 17 electrically connected to the superconducting tape wires 12a and 12b via the wide superconducting tape wire 39 is mechanically fixed to the winding frame 16 by a fixing tool 18 such as a screw, and the first superconducting coil device. Similarly to 10A, the superconducting tape wires 12a and 12b are wound, and the superconducting coil 11a and the superconducting coil 11b are arranged so as to be adjacent to each other coaxially to form the superconducting coil unit 11 of the ninth superconducting coil device 10I.

  The ninth superconducting coil device 10I configured as described above connects the wide superconducting tape wire 39, the superconducting tape wire 12a, and the superconducting tape wire 12b in addition to the effects exhibited by the first superconducting coil device 10A. Thus, the connection resistance between the superconducting tape wire 12a and the superconducting tape wire 12b can be reduced, and the heat generation at the connecting portion between the superconducting tape wire 12a and the superconducting tape wire 12b can be reduced. Therefore, it is needless to say that the conventional superconducting coil device is used, and the ninth superconducting coil device 10A, which can improve the stability as compared with the conventional superconducting coil device, is capable of further improving the stability. Superconducting coil device 10I can be provided.

  As described above, according to the superconducting coil devices 10 </ b> A to 10 </ b> I, the superconducting coil unit 11 is not displaced and the outer diameter can be made uniform, so that a gap is generated when the superconducting coil unit 11 is soldered with the copper plate 13. This eliminates the need to use an excessive bonding material, thereby reducing the amount of bonding material used and the heating time. That is, it is possible to provide the superconducting coil devices 10A to 10I that reduce the connection resistance between the superconducting coil units 11 and do not deteriorate the superconducting characteristics of the superconducting coil unit 11 (superconducting coils 11a and 11b).

  According to the second superconducting coil device 10B, in addition to the effects produced by the first superconducting coil device 10A, the copper electrode 17 can be used even when the inner diameter of the winding frame 16 is small or the axial length of the winding frame 16 is long. Can be easily fixed to the reel 16. That is, it is possible to provide the second superconducting coil device 10B in which the copper electrode 17 is more easily fixed to the winding frame 16 than the first superconducting coil device 10A.

  According to the third superconducting coil device 10C, in addition to the effects exhibited by the first superconducting coil device 10A, the withstand voltage characteristic can be improved. Accordingly, not only the conventional superconducting coil device, but also the third superconducting coil having further improved stability as compared with the first superconducting coil device 10A having improved stability over the conventional superconducting coil device. An apparatus 10C can be provided.

  According to the fourth superconducting coil device 10D, in addition to the effects exhibited by the first superconducting coil device 10A, a copper electrode caused by electromagnetic force or thermal stress during cooling than the conventional device or the first superconducting coil device 10A. Separation from the 25 superconducting coils 31a and 31b hardly occurs. Therefore, not only the conventional superconducting coil device, but also the first superconducting coil device 10A having improved stability compared to the conventional superconducting coil device, the fourth superconducting coil device having further improved stability. 10D can be provided.

  According to the fifth superconducting coil device 10E, in addition to the effect exhibited by the first superconducting coil device 10A, the withstand voltage characteristic can be improved. Accordingly, not only the conventional superconducting coil device, but also the fifth superconducting coil having further improved stability as compared with the first superconducting coil device 10A having improved stability compared to the conventional superconducting coil device. An apparatus 10E can be provided.

  According to the sixth superconducting coil device 10F, in addition to the effects exhibited by the first superconducting coil device 10A, the insulation characteristics and the heat transfer characteristics can be improved. Accordingly, not only the conventional superconducting coil device but also the sixth superconducting coil having further improved stability as compared with the first superconducting coil device 10A having improved stability over the conventional superconducting coil device. An apparatus 10F can be provided.

  According to the seventh superconducting coil device 10G, in addition to the effects exhibited by the first superconducting coil device 10A, the heat transfer characteristics can be improved. Accordingly, not only the conventional superconducting coil device, but also the seventh superconducting coil having further improved stability compared to the first superconducting coil device 10A having improved stability over the conventional superconducting coil device. An apparatus 10G can be provided.

  According to the eighth superconducting coil device 10H, in addition to the effects exhibited by the first superconducting coil device 10A, insulation characteristics and heat transfer characteristics can be improved. Accordingly, not only the conventional superconducting coil device, but also the eighth superconducting coil having further improved stability compared to the first superconducting coil device 10A having improved stability compared to the conventional superconducting coil device. An apparatus 10H can be provided.

  According to the ninth superconducting coil device 10I, in addition to the effects exhibited by the first superconducting coil device 10A, the connection resistance between the superconducting tape wire 12a and the superconducting tape wire 12b can be reduced. Accordingly, not only the conventional superconducting coil device, but also the ninth superconducting coil having further improved stability compared to the first superconducting coil device 10A having improved stability compared to the conventional superconducting coil device. An apparatus 10I can be provided.

  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.

10A 1st superconducting coil device 10B 2nd superconducting coil device 10C 3rd superconducting coil device 10D 4th superconducting coil device 10E 5th superconducting coil device 10F 6th superconducting coil device 10G 7th superconducting coil device 10H Eighth superconducting coil device 10I Ninth superconducting coil device 11 Superconducting coil units 11a, 11b Superconducting coil 12 (12a, 12b) Superconducting tape wire 13 Copper plate 16 Winding frame 17 Electrode 18 Fixing tool 21 Fixing tool 25 Electrode 31 Superconducting coil 31a 31b Superconducting coil 33 FRP plate 35 Aluminum nitride plate 37 Aluminum plate 39 Superconducting tape wire

Claims (12)

In a superconducting coil in which a plurality of superconducting coils formed by winding a superconducting tape wire connected with an electrode fixed to a winding frame around the winding frame are stacked in the axial direction of the winding frame,
The superconducting coil device is characterized in that the plurality of superconducting coil winding frames are configured as an integrated single structure. Superconductivity in which two superconducting tape wires are connected so as to be adjacent to the electrode fixed to the winding frame, and two superconducting coils formed by winding the two superconducting tape wires in opposite directions are coaxially adjacent to each other. A plurality of coil units are arranged adjacent to each other on the axis of the winding frame, and the outermost circumference of the superconducting tape wire and the other superconducting coil unit located at the outermost circumference of one superconducting coil unit arranged adjacent to each other. 2. The superconducting coil device according to claim 1, wherein the whole of the superconducting tape wire at the position is electrically connected with a conductor and impregnated with resin. The superconducting coil device according to claim 2, wherein the connection positions of the conductors are different positions in the circumferential direction of the winding frame. 4. The superconducting coil device according to claim 1, wherein the electrodes fixed to the winding frame are arranged at different positions in the circumferential direction of the winding frame. 5. The electrode is fixed to the winding frame by a fixing tool, and the fixing of the winding frame and the fixing tool is performed by either the fixing tool itself or an adhesive. 5. The superconducting coil device according to any one of items 4 to 4. 6. The superconducting coil unit in which the plurality of layers are stacked has two superconducting coils, and is disposed at both ends in the axial direction of the winding frame. Superconducting coil device One of the plurality of superconducting coil units stacked has two superconducting coils disposed at both ends in the axial direction of the winding frame, and the electrodes of the two superconducting coils are respectively in the axial direction of the winding frame. The superconducting coil device according to any one of claims 1 to 6, wherein the superconducting coil device is configured to protrude from both ends. The superconducting coil device according to any one of claims 1 to 7, wherein the electrode fixed to the winding frame is configured by connecting a superconducting tape wire to a metal fixed to the winding frame. . 9. The radiator according to claim 1, wherein a heat radiator that dissipates heat of the two adjacent superconducting coil units is inserted between two adjacent superconducting coil units among the plurality of superconducting coil units stacked. The superconducting coil device according to any one of the above. The superconducting coil device according to claim 9, wherein the heat radiator is an insulator. 11. The superconducting coil device according to claim 9, wherein an insulator is interposed between each of the heat radiating body and the two adjacent superconducting coil units. The superconducting coil device according to any one of claims 1 to 8, wherein an insulator is inserted between two adjacent superconducting coil units among the plurality of superconducting coil units stacked.

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