Linear material protection member and method for connecting superconducting wire

Abstract

A protective member (100) for a linear material, the protective member (100) having a plurality of modules (20) for protecting a linear material (10) comprising a superconducting tape wire (11), a member (20A2) constituting a bottom portion (23) of the first module (20A) has a first side (20s1) disposed along one of a first side wall portion (24) and a second side wall portion (25) of the first module (20A), a second side (20s2) disposed on the opposite side of the first side (20s1), and a central region (CR1) disposed between the first side (20s1) and the second side (20s2). Furthermore, the member (20A2) has a second cable holding portion (TR2) and a third cable holding portion (TR3), which are formed along the first side (20s1) so as to be able to sandwich the first cable holding portion (TR1) of the first member (20A1). And a threaded hole (TH1) disposed in the central region (CR1) and formed so as to penetrate the member (20A2) in the thickness direction.

Description

Technical Field

[0001] This invention relates to a linear material protection component for maintaining linear materials and a method for connecting superconducting wires. Background Technology

[0002] Japanese Patent Publication No. 2019-102298 (Patent Document 1) discloses a superconductor in which multiple superconducting wires are bundled together in a stacked state and inserted into a flexible tube. Additionally, Patent Document 1 discloses a forming method in which the superconductor is formed into a coil shape and then the stacked superconducting wires are molded using a resin or metal molding component.

[0003] Existing technical documents Patent documents Patent document 1: Japanese Patent Publication No. 2019-102298 Summary of the Invention The problem to be solved by the present invention For example, linear materials, such as electrical wires or conduits, are used in applications where they can be deformed and utilized, for instance, by being wound around a structure. When using linear materials for such applications, it is essential to prevent damage to the material itself due to external forces during winding or forces applied after winding. Furthermore, for winding around a structure, both the linear material and the protective component protecting it must be deformable. The inventors of this application have researched a protective component that prevents damage to the linear material and possesses a deformable structure.

[0004] As part of the research on protective components, for example, research was conducted on protective components with structures capable of connecting multiple linear materials. If multiple linear materials that can be separated from each other can be connected via a protective component, a long linear material can be obtained by joining the multiple linear materials.

[0005] Problem-solving methods One embodiment of a linear material protection component includes: a plurality of modules for holding the linear material in a manner surrounding it in a first direction; and a first cable extending in the first direction and engaging with the plurality of modules. The linear material has a first linear material comprising a plurality of stacked first superconducting strip wires. The plurality of modules are arranged sequentially along the first direction. Each of the plurality of modules includes: a holding space for holding the linear material; a top covering the holding space; a bottom located opposite the top via the holding space; a first sidewall connected to each of the top and the bottom; and a second sidewall connected to each of the top and the bottom and located opposite the first sidewall. The plurality of modules includes: a first module; and a second module having a different shape from the first module. The first module includes: a first component constituting the top, the first sidewall, and the second sidewall; and a second component connected to the first component via the first cable and constituting the bottom. The first component includes: a first cable holding portion formed at either the position where the first sidewall portion and the bottom are combined, or at either the position where the second sidewall portion and the bottom are combined, and capable of engaging with the first cable; and a first fixing portion formed at the other position where the first sidewall portion and the bottom are combined, and capable of fixing the second component. The second component includes: a first side disposed along one of the first sidewall portion and the second sidewall portion; a second side disposed on the opposite side of the first side; a central region disposed between the first side and the second side in a second direction intersecting the first direction; a second cable holding portion and a third cable holding portion formed along the first side in a state capable of clamping the first cable holding portion of the first component; a second fixing portion disposed along the second side and capable of being fixed to the first fixing portion of the first component; and a first threaded hole disposed in the central region and formed to penetrate the second component in the thickness direction.

[0006] Another embodiment of the linear material protection component protects: a first linear material comprising a plurality of stacked first superconducting strip wires extending in a first direction; a second linear material comprising a plurality of stacked second superconducting strip wires extending in the first direction; and a plurality of third superconducting strip wires extending in a second direction intersecting the first direction and electrically connected to the plurality of first and second superconducting strip wires. The linear material protection component includes: a first module group formed by a plurality of modules for holding the first linear material in an enclosing manner; a second module group formed by a plurality of modules for holding the second linear material in an enclosing manner; a third module for holding the portions of the plurality of first and second superconducting strip wires electrically connected via the plurality of third superconducting strip wires in an enclosing manner; a first cable extending in the first direction and engaging with the first module group and the third module; and a second cable extending in the first direction and engaging with the second module group and the third module. The third module includes: a first holding space for holding the first linear material; a second holding space for holding the second linear material; a top covering the first holding space and the second holding space; a first bottom located opposite the top via the first holding space; a second bottom located opposite the top via the second holding space; a first sidewall connected to each of the top and the first bottom; a second sidewall connected to each of the top and the second bottom and located opposite the first sidewall; a middle wall located between the first sidewall and the second sidewall; a third holding space formed in a manner connecting the first holding space and the second holding space, holding the plurality of third superconducting strip wires; a first component constituting the top, the first sidewall, the second sidewall, and the middle wall; a second component connected to the first component via the first cable and constituting the first bottom; and a third component connected to the first component via the second cable and constituting the second bottom. The first component has: a first cable holding portion formed at the position where the first sidewall portion and the first bottom portion are combined, and capable of engaging with the first cable; a first fixing portion formed at the position where the middle wall portion and the first bottom portion are combined, and capable of fixing the second component; and a second fixing portion formed at the position where the second sidewall portion and the second bottom portion are combined, and capable of fixing the third component.The second component has: a first side disposed along the first sidewall portion; a second side disposed on the opposite side of the first side; a first central region disposed in the second direction between the first side and the second side; a second cable holding portion and a third cable holding portion formed along the first side in a state capable of clamping the first cable holding portion of the first component; a third fixing portion disposed along the second side and capable of being fixed to the first fixing portion of the first component; a fourth cable holding portion formed at the position where the central wall portion and the second bottom portion are combined and capable of engaging with the second cable; and a first threaded hole disposed in the first central region and formed in such a way as to penetrate the second component in the thickness direction. The third component has: a third side disposed along the second side of the second component; a fourth side disposed on the opposite side of the third side; a second central region disposed in the second direction between the third side and the fourth side; a fifth cable holding portion and a sixth cable holding portion formed along the third side in a state capable of clamping the second cable holding portion of the second component; a fourth fixing portion disposed along the fourth side and capable of being fixed to the second fixing portion of the first component; and a second threaded hole disposed in the second central region and formed in such a way as to penetrate the third component in the thickness direction.

[0007] Another embodiment of the superconducting wire connection method includes: (a) a step of preparing a first superconducting wire, the first superconducting wire having a first stack formed by a plurality of first superconducting strip wires stacked together; (b) a step of preparing a second superconducting wire, the second superconducting wire having a second stack formed by a plurality of second superconducting strip wires stacked together; (c) a step of forming a third stack, which involves, after steps (a) and (b), alternately stacking portions of the plurality of first superconducting strip wires and portions of the plurality of second superconducting strip wires in an overlapping manner; (d) a step of preparing a first module of a protective member, the protective member being able to be held in a manner surrounding the third stack; and (e) a step of fixing the third stack to a holding space of the first module, which involves, after steps (c) and (d), inserting screws into threaded holes formed in the first module and tightening them. The first module includes: the holding space capable of holding the third stack; a top that covers the holding space; a bottom that is located on the opposite side of the top via the holding space; and the threaded hole that extends through the bottom in the thickness direction and communicates with the holding space.

[0008] Effects of the present invention According to a representative embodiment of the present invention, a wire protector that prevents damage to linear materials and is deformable can be obtained. Attached Figure Description

[0009] Figure 1 This is an explanatory diagram illustrating a structural example of a linear material held by a protective component in one embodiment.

[0010] Figure 2 This indicates that it is held by a protective component according to one embodiment. Figure 1 The diagram illustrates the state of the superconducting wire.

[0011] Figure 3 It is along Figure 2 The cross-sectional view of line AA is shown.

[0012] Figure 4 This is a top view of the modules arranged at the ends of the array, viewed from the bottom surface side.

[0013] Figure 5 It indicates assembly. Figure 4 The diagram shows the state of the module before it was displayed.

[0014] Figure 6 It indicates that the components have been assembled. Figure 5 A 3D view showing the state of the two components of the module.

[0015] Figure 7 It is along Figure 2 A cross-sectional view of the BB line.

[0016] Figure 8 It indicates assembly. Figure 7 The diagram shows the state of the module before it was displayed.

[0017] Figure 9 It indicates that the components have been assembled. Figure 7 A 3D view showing the state of the two components of the module.

[0018] Figure 10 It is along Figure 2 A cross-sectional view of the CC line.

[0019] Figure 11 This is a perspective view illustrating an example of using superconducting wire as a coil.

[0020] Figure 12 It means in Figure 11 A perspective view of an example of a module that protects the portion of the superconducting wire connected in parallel among the multiple modules used in the coil shown.

[0021] Figure 13 It is along Figure 12 A cross-sectional view of the DD line.

[0022] Figure 14 It is along Figure 12A cross-sectional view of the EE line. Figure 5 It means Figure 12 A 3D view of one of the two modules shown.

[0023] Figure 15 It indicates assembly. Figure 13 The diagram shows the state of the module before it was displayed.

[0024] Figure 16 It indicates that the components have been assembled. Figure 13 A 3D view showing the state of the three components of the module.

[0025] Figure 17 Viewed from the bottom side Figure 16 The top view of the module shown.

[0026] Figure 18 It means to Figure 12 The diagram shows a 3D view of the superconducting wire flipped up and down with multiple cables and the bottom removed.

[0027] Figure 19 It means to Figure 10 Cross-sectional view of the deformed example.

[0028] Figure 20 It means to Figure 3 Cross-sectional view of the deformed example.

[0029] Figure 21 This is an explanatory diagram illustrating an example of the process flow for connecting superconducting wires.

[0030] Figure 22 It means through Figure 21 The diagram shows an enlarged cross-sectional view of the linear material after the connection method of the superconducting wires is shown.

[0031] Figure 23 It means Figure 22 The diagram illustrates an example of the structure of a superconducting wire.

[0032] Figure 24 It is Figure 22 The enlarged cross-sectional view of a portion of the stacked body shown is shown. Detailed Implementation

[0033] The inventors of this application have researched and developed a nuclear fusion furnace that conducts nuclear fusion reactions by enclosing high-temperature, high-density plasma within a furnace. As part of this, the use of high-temperature superconducting wire as a material for generating coils to enclose the plasma within the furnace was investigated. The technology described below can also be used as a protective component for various linear materials such as wires or conduits, in addition to high-temperature superconductors. Embodiments applied to protective components for high-temperature superconductors are described below. In the following description, a distinction is made between "linear material" and a "linear material protective component" that protects the "linear material." A cable with multiple modules that engage with the protective component is described as a component included in the "linear material protective component." Furthermore, in the following description, the phenomenon of a superconductor changing from a superconducting state to a normally conducting state is referred to as "loss of superconductivity."

[0034] <Superconducting wires> In this application, superconductors exhibiting superconductivity above 77K are referred to as high-temperature superconductors. Hereinafter, the terms "superconductor," "superconductor layer," "superconducting strip wire," or "superconducting wire" will be used, but all refer to materials including high-temperature superconductors. Superconducting strip wire (specifically, high-temperature superconducting strip wire) is a strip material on which a superconducting layer (specifically, high-temperature superconducting layer) is formed on a metal strip with a thickness of approximately 100 micrometers. When using superconducting strip wire as, for example, a coil, multiple superconducting strip wires are stacked, the material binding these is used as a superconducting wire (specifically, high-temperature superconducting wire), and the material shaping the superconducting wire into a coil shape is used as a superconducting coil (specifically, high-temperature superconducting coil). Furthermore, for example, in cases where a strong magnetic field must be generated, such as in coils used in nuclear fusion reactors or high-energy particle accelerators, there are cases where multiple superconducting wires are stacked together to form a wound layered coil.

[0035] Superconducting wires, for example, include flexible tubes that bundle stacked superconducting wires. These flexible tubes are formed, for example, by winding a metal strip around the stacked superconducting wires. Furthermore, as described in Patent Document 1 above, when superconducting wires stacked using a molding component made of resin or a low-melting-point metal are molded after the superconducting wire is formed, the strength can be improved compared to monolithic superconducting wires.

[0036] However, according to the inventors' research, when superconducting wires are shaped into complex forms, the external forces applied to the superconducting wires or the stresses generated within them are large, thus requiring further increases in strength. For example, in the case of coils used in helical nuclear fusion reactors, since the superconducting wires are wound into a coil shape in a twisting manner, strong forces are easily applied during the winding process, resulting in increased stress on the superconducting wires. Furthermore, there are cases where strong external forces are applied to the superconducting wires after they have been shaped into coils. For example, when a large current flows through a superconducting coil, strong external forces such as the Lorentz force are applied to the superconducting wires due to the magnetic field generated around the coil. Therefore, protective components capable of preventing damage to the superconducting wires are necessary.

[0037] On the other hand, in order to prevent damage to the superconducting wire, for example, by storing the superconducting wire in a metal tube, although the superconducting wire can be protected, processing such as bending and shaping becomes difficult.

[0038] The techniques described below can be applied to various uses, but they are particularly effective when used in protective components for superconducting wires used to protect shaped structures such as superconducting coils. Furthermore, techniques that are particularly effective when multiple superconducting wires are stacked will also be described below.

[0039] Figure 1 This is an explanatory diagram illustrating a structural example of the linear material held by a protective component in one embodiment. (Example:) Figure 1 As shown, the linear material in this embodiment is a superconducting wire 10, which includes a plurality of superconducting wires 11 stacked together and a metal strip 12 wound on a stack 11A of the plurality of superconducting wires 11. Figure 1 The example illustrates the state of a superconducting wire 11 with 152 layers stacked together. The number of layers in the superconducting wire is not limited to this. Figure 1 The example shown can be determined based on the size of the coil or the specifications of the current flowing through the coil. For example, as a variation of this embodiment, the number of layers in the superconducting wire 11 stack 11A can be 151 or less, or 153 or more.

[0040] Superconducting strip wire 11 is a strip wire in which a superconducting layer (specifically, a high-temperature superconducting layer) is formed on a metallic strip of approximately tens of μm in diameter. Figure 1 In the example shown, the thickness of the superconducting strip wire 11 is approximately 0.1 mm, and the width of the superconducting strip wire 11 is approximately 12 mm. The thickness and width of the superconducting strip wire 11 are just one example, and various variations can be applied. Each of the multiple superconducting strip wires 11 is not bonded to each other, but is stacked in a state where they can be offset from each other. Therefore, the superconducting wire 10 of the stack 11A of multiple superconducting strip wires 11 can be formed into, for example, a coil shape. Furthermore, although the figures are omitted, as a reference... Figure 1 In some variations, a laminate 11A consisting of multiple superconducting wires 11 bundled together using cables or the like (not shown). In this case, the operability of the laminate 11A is improved. On the other hand, from the viewpoint of increasing the degree of freedom of movement of the multiple superconducting wires 11 within the tube formed by the metal strip 12, it is preferable not to bundle the laminate 11A consisting of multiple superconducting wires 11 as in this embodiment.

[0041] Multiple superconducting wires 11, stacked in layers 11A, are inserted into a tubular metal strip 12. Figure 1 In the example shown, the thickness of the metal strip 12 is, for example, about 100 μm to several hundred μm, and the width is about 3 to 5 mm. Furthermore, as described later... Figure 3 In the cross-sectional view shown, the metal strip 12 is formed into a cylindrical shape. Hereinafter, the structure constructed by the metal strip 12 is referred to as a tube. The outer diameter of the tube is, for example, 23 mm, and the inner diameter is, for example, 22 mm. The tube is a metal cylinder, but as long as the thickness is this level, the tube can be formed into a coil shape. The metal strip 12 functions as a binding component, binding the stacked superconducting wires 11A to prevent them from becoming tangled. However, each of the multiple superconducting wires 11 can move freely to a certain extent within the tube formed by the metal strip 12.

[0042] exist Figure 1 In the example shown, the metal strip 12 surrounding the laminate 11A is shaped like a spring, and gaps are provided between adjacent metal strips 12. As will be described later, when molding a laminate 11A of multiple superconducting wire strips 11 using a molding component after the superconducting wire 10 has been formed into a coil shape, the molding component must be inserted into the opening within the tube of the metal strip 12. Figure 1 As shown, when a gap is provided between adjacent metal strips 12, a molding component is introduced through the gap, which enables the molding of a stack 11A of multiple superconducting wires 11.

[0043] However, as a response to Figure 1 In some variations, the metal strip 12 may be partially overlapped and wound. In such cases, when molding a stack 11A of multiple superconducting wires 11, it is preferable to provide an opening for introducing the molding component at one or more locations of the tube formed by the metal strip 12.

[0044] like Figure 1 As shown, the superconducting wire 10 has a cooling pipe 13 and a spacer 14 arranged next to the laminate 11A of the superconducting wire 11. Figure 1 In the example shown, multiple ( Figure 1 There are two cooling pipes in the middle (13) and multiple ( Figure 1Two spacers 14 are arranged next to a stack 11A of multiple superconducting wires 11.

[0045] Cooling tube 13 is a pipe for the flow path of coolant and is arranged along the stack 11A of multiple superconducting wires 11. For example, liquid hydrogen or gaseous helium at a temperature of about 20 K (Kelvin) flows through cooling tube 13 as coolant. The outer diameter of cooling tube 13 is, for example, 8 mm, and the inner diameter is, for example, 7 mm. The wall thickness of cooling tube 13 is 1 mm. With this thickness, even if cooling tube 13 is made of metal, it can be deformed to mimic the shape of the superconducting wire 10. In addition, from the viewpoint of improving the flexibility of cooling tube 13, there are cases where corrugated piping is used. As in this embodiment, by arranging cooling tube 13 next to the stack 11A of superconducting wires 11, the cooling efficiency of superconducting wires 11 can be improved.

[0046] Spacer 14 is, for example, a cable. Spacer 14 is provided to prevent the positional relationship of the superconducting wire 11 stack 11A and each of the plurality of cooling tubes 13 from shifting within the tube formed by the metal strip 12.

[0047] The spacer 14 is made of copper, for example. The spacer 14 may come into contact with the superconducting wire 11. Therefore, in order not to impair the electrical properties of the superconducting wire 11, it is preferable to use a copper conductor as the spacer 14.

[0048] The wire diameter of the spacer 14 used as a cable is, for example, about 2mm to 3mm. Additionally, in Figure 1 In the example shown, a spacer 14 is disposed in the space surrounded by the laminate 11A of the two cooling tubes 13 and the superconducting wire 11, and a spacer 14 is disposed in the space surrounded by the two cooling tubes 13 and the metal strip 12.

[0049] However, depending on the location or cross-sectional area of ​​the space created inside the tube, various variations can be applied in the number and shape of the spacers 14. For example, when a gap is created between the laminate 11A of the metal strip 12 and the superconducting wire 11, the spacers 14 can be inserted into the gap.

[0050] Similarly, there are various variations in the presence and number of cooling tubes 13. For example, in the case of a small superconducting wire 11 with approximately 30 layers, there may be cases where cooling tubes 13 are not provided. In addition, there may be cases where there is only one cooling tube 13, or where there are three or more cooling tubes 13.

[0051] Each of the superconducting wire 11 stack 11A, cooling tube 13, and spacer 14 is inserted into a tubular metal strip 12. Since two cooling tubes 13 and two spacers 14 are arranged inside the tube, the shape of the superconducting wire 11 stack 11A is the cross-sectional shape of one side of the stack 11A along the inner wall of the tube. Because each of the multiple superconducting wires 11 is not bonded to each other but stacked in a state that allows them to be offset from each other, the superconducting wire 11 can be deformed without special pre-forming. Figure 1 The shape shown.

[0052] There are also Figure 1 The method shown describes a method of directly winding the superconducting wire 10 onto the core material of a coil to form a coil shape. However, according to the inventors' research, when the superconducting wire 10 is directly wound onto the core material of the coil, it is determined that the superconducting wire 10 may be damaged during the winding process. Furthermore, when the superconducting wire 10 is wound in multiple layers onto the core material of the coil, it is determined that there is a positional misalignment of the stacked superconducting wire 10.

[0053] Therefore, the inventors of this application have studied a protective component for protecting the superconducting wire 10. The required functions of the protective component are as follows: First, the protective component itself must be deformable when the superconducting wire 10 is formed (e.g., in a coil shape). Second, a structure capable of preventing damage to the superconducting wire 10 is necessary when it is formed (e.g., in a coil shape). Furthermore, in the case of multi-layered winding of the superconducting wire 10, it is preferable to prevent positional displacement of the stacked superconducting wire 10. Additionally, when the superconducting wire 10 is mounted on the protective component, it is preferable that the mounting of the superconducting wire 10 is simple. Furthermore, a large current flows through the superconducting wire 10. In this case, a structure in which the components of the protective component are difficult to be damaged by the electromagnetic forces generated around the superconducting wire 10 is preferred.

[0054] <Protective Components> Figure 2 This indicates that the protective component according to this embodiment is used to maintain... Figure 1 The diagram illustrates the state of the superconducting wire. Figure 2 It is a 3D diagram, but to clearly show the boundaries of the protective components, 20A2 and 20B2 are marked with shaded lines. Figure 3 It is along Figure 2 A cross-sectional view of line AA. Figure 4 This is a top view of the modules arranged at the ends of the array, viewed from the bottom surface side. Figure 5 It indicates assembly. Figure 4 The diagram shows the state of the module before it was displayed. Figure 6 It indicates that the components have been assembled. Figure 5A 3D view showing the state of the two components of the module. Figure 5 and Figure 6 In the middle, only the illustration is shown. Figure 3 The cable 31 shown is one of the multiple cables 30 that facilitates the connection between component 20A1 and component 20A2. In this embodiment, in addition to the cable 31 shown, there is a cable 31 on module 20A. Figure 5 and Figure 6 In addition to the cable 31 shown, there is also a clip. Figure 3 The cables shown are 32, 33, and 34.

[0055] The following will Figure 2 The extension direction of the superconducting wire 10 shown is taken as the X direction, and the direction that intersects the X direction when viewed from above (in... Figure 2 In the example shown, the direction orthogonal to the X direction is taken as the Y direction, and the normal direction of the XY plane, which includes both the X and Y directions (and sometimes the thickness direction), is taken as the Z direction.

[0056] like Figure 2 As shown, the protective component 100 of this embodiment includes: a plurality of modules 20 for holding the superconducting wire 10 of linear material in a manner that surrounds it; and a cable 30 that engages with the plurality of modules 20. In this embodiment, as Figure 3 As shown, the protective component 100 has four cables 30. (As indicated...) Figure 3 As shown, the four cables 30 are formed by cables 31, 32, 33, and 34. Each of the cables 30 is made of metal. Examples of metal materials constituting the cables 30 include stainless steel (e.g., SUS304), titanium (Ti), or titanium alloys. The diameter of the cables 30 is, for example, approximately 2 mm.

[0057] The protective member 100 of this embodiment can be divided into multiple modules 20, forming a structure in which the multiple modules 20 are connected via cables 30. Therefore, when the protective member 100 (in other words, the linear material with the protective member) that holds the superconducting wire 10 is wound around a core material such as a coil, gaps can be created at the boundaries of the multiple modules 20 as needed. Therefore, the protective member 100 can be deformed and can be wound around a structure such as a core material. In other words, the multiple modules 20 form a deformable structure like a spine.

[0058] Cable 30 functions as a reinforcing component to prevent damage to the superconducting wire 10 due to tensile forces when the superconducting wire 10 housed in the protective component 100 is wound around a core material such as a coil. Therefore, cable 30 is configured to be in the same direction as the extension direction of the superconducting wire (in... Figure 2 In the case of X direction, it extends in the direction of X. At least one cable of 30 is required, but in cases where... Figure 2In the case shown, where multiple cables 30 are provided, it is preferable to increase the reinforcing strength of the superconducting wire 10.

[0059] like Figure 3 As shown, each of the plurality of modules 20 includes a holding space 21 for holding the superconducting wire 10 (see reference). Figure 6 ), covering the top 22 of the retaining space 21, the bottom 23 located on the opposite side of the top 22 via the retaining space 21, the sidewall portion 24 connected to each of the top 22 and the bottom 23, and the sidewall portion 25. The sidewall portion 25 is connected to the retaining space 21 (see reference ). Figure 6 It is located on the opposite side of the side wall portion 24.

[0060] Each of the top 22, bottom 23, sidewall portion 24, and sidewall portion 25 is formed of a metallic material. Examples of metallic materials constituting the top 22, bottom 23, and sidewall portion 24 include titanium (Ti) or titanium alloys. Especially in the case of protective components for linear materials such as the superconducting wire 10 through which a large current flows, a non-magnetic material is preferred. Considering the material's hardness, machinability, and non-magnetic properties, in addition to the aforementioned titanium alloy, stainless steel (e.g., SUS304) can also be used to form the top 22, bottom 23, sidewall portion 24, and sidewall portion 25.

[0061] The protective component 100 has several types of modules 20 with different shapes. Figure 2 In the example shown, the protective component 100 includes module 20A and module 20B, which has a different shape from module 20A. As will be described in detail later, module 20A forms a structure that facilitates the connection of the superconducting wire 11 laminate 11A and the lead portion 40. On the other hand, module 20B forms a simple structure that is easily wound onto the superconducting wire 10.

[0062] Therefore, among the multiple modules 20 arranged along the X direction, module 20A is disposed at the end of the arrangement. Additionally, in Figure 2 In the example shown, only the module 20 configured at the end of the arrangement is called module 20A, and the others are called module 20B. However, the configuration of module 20A is not limited to the end of the arrangement, and there are also cases where multiple modules 20A, including the end of the arrangement, are continuously configured along the X direction.

[0063] <Module 20A> First, regarding Figure 2 The structure of module 20A shown will be explained. For example... Figure 3 As shown, module 20A includes: component 20A1 forming top 22, side wall portion 24 and side wall portion 25; and component 20A2 connected to component 20A1 via cable 31 and forming bottom 23.

[0064] Component 20A1 has a cable holding part TR1 capable of engaging cable 31 and a fixing part BP1 capable of fixing component 20A2 (see reference). Figure 5 The cable retaining part TR1 is formed at either the position where the side wall part 24 and the bottom part 23 are combined, or at the position where the side wall part 25 and the bottom part 23 are combined. Figure 3 In the example shown, the cable holding part TR1 is formed at the end of the side wall part 24 (where the side wall part 24 and the bottom 23 are combined). The fixing part BP1 is formed at either the position where the side wall part 24 and the bottom 23 are combined, or at the position where the side wall part 25 and the bottom 23 are combined. Figure 3 In the example shown, the fixing part BP1 is formed at the end of the side wall part 25 (the position where the side wall part 25 and the bottom 23 are combined).

[0065] like Figure 4 As shown, component 20A2 includes side 20s1, side 20s2, central region CR1, cable holding part TR2, cable holding part TR3, and fixing part BP2 (see reference). Figure 5 ) and threaded hole TH1.

[0066] Each of sides 20s1 and 20s2 extends along the X direction. Side 20s1 extends along sidewall portion 24 (see reference). Figure 3 ) and sidewall portion 25 (refer to Figure 3 One of the configurations in ) . In Figure 4 In the example shown, side 20s1 is along sidewall portion 24 (refer to...) Figure 3 The configuration is as follows: Side 20s2 is positioned opposite to Side 20s1. In a top-down view, the central region CR1 is positioned between Side 20s1 and Side 20s2. Specifically, it is positioned at the intersection with the X direction (in...). Figure 4 In the orthogonal Y direction, the central region CR1 is positioned between side 20s1 and side 20s2.

[0067] Each of the cable holding portion TR2 and the cable holding portion TR3 extends along the X direction. Each of the cable holding portion TR2 and the cable holding portion TR3 is formed in a state in which the cable holding portion TR1 of the member 20A1 can be clamped along the side 20s1. In other words, in the X direction, the cable holding portion TR1 of the member 20A1 is clamped between the cable holding portion TR2 and the cable holding portion TR3.

[0068] Figure 5 The fixing part BP2 shown is arranged along the side 20s2. In this embodiment, as... Figure 5 and Figure 6 As shown, by using the fixing part BP2 (refer to) as a protrusion... Figure 5 ) and the fixing part BP1 as a recess (refer to Figure 6The two parts are combined to form a structure in which the fixing part BP1 and the fixing part BP2 are tightly attached and fixed to each other. Hereinafter, this fixing method will be called "riveting", and the part fixed by riveting will be called the riveting part.

[0069] Furthermore, the method of fixing the fixing part BP1 and the fixing part BP2 is not limited to riveting, and various variations exist. For example, a method of fixing by welding can be exemplified.

[0070] A threaded hole TH1 is located in the central region CR1 and is formed in such a way that it penetrates the component 20A2 in the thickness direction. For example... Figure 3 As shown, screw SS1 is inserted into threaded hole TH1. Figure 3 In the example shown, one end of the screw SS1 contacts the laminate 11A of the superconducting wire 11. In this embodiment, the module 20A provided at the end of the arrangement of the plurality of modules 20 can be used to fix the laminate 11A with the screw SS1.

[0071] In cases where the laminate 11A of the superconducting wire 11 can be fixed by screws SS1, it is particularly preferred as a joint or joint disposed with the superconducting wire 10. Figure 2 The protective component for the portion connected to the lead wire 40 shown. This is because, when multiple superconducting wires 10 are connected to form a long superconducting wire 10, the electrical characteristics of the superconducting wire 10 can be easily maintained by fixing the laminate 11A at the connection point of the superconducting wire 10. Details of the method for connecting the superconducting wires 10 will be described later.

[0072] Screw SS1 is a headless screw (also known as a locating screw) without threads. Therefore, screw SS1 can be completely embedded in threaded hole TH1. Screw SS1 does not protrude from the lower end of threaded hole TH1. In other words, screw SS1 does not protrude from the lower surface 23b of bottom 23.

[0073] In passing Figure 2 When the superconducting wire 10 shown is formed into a coil, there is a situation where the superconducting wire 10 is stacked in a state where it is protected by the protective member 100. In this case, from the viewpoint of preventing interference between the protective member 100 disposed in the upper section and the protective member 100 disposed in the lower section, it is preferable to reduce the protruding portion protruding from the protective member.

[0074] In this embodiment, a structure is configured to facilitate the stacking of superconducting wires 10 by using a headless screw as screw SS1.

[0075] Furthermore, in order to easily secure the laminate 11A with screw SS1, module 20A is preferably structured as follows. That is, Figure 3The inner surface 24a of the sidewall portion 24 and the inner surface 25a of the sidewall portion 25 of the component 20A1 of the module 20A shown are each in the X direction (refer to) Figure 2 The bottom 23 of module 20A has an arc shape when viewed from the side. The upper surface 23a of the bottom 23 of module 20A is a flat surface. In addition, the lower surface 22b of the top 22 of module 20A is a flat surface.

[0076] In other words, each of the surfaces in contact with the superconducting wire 11 laminate 11A in the bottom 23 of module 20A (upper surface 23a) and the surfaces in contact with the superconducting wire 11 laminate 11A in the top 22 of module 20A (lower surface 22b) is a flat surface. In this case, the adhesion between the laminate 11A and the lower surface 22b, and the adhesion between the laminate 11A and the upper surface 23a, can be improved respectively.

[0077] Furthermore, as will be described later as a variation. Figure 20 As shown, there is a case where a metal plate 19 is disposed on the upper surface 23a of the bottom 23. In this case, the screw SS1, inserted into the threaded hole TH1, is in contact with the metal plate 19. According to this modified example, direct contact between the screw SS1 and the superconducting wire 11 can be avoided. Therefore, it is preferable that damage to the superconducting wire 11 can be suppressed even if the screw is forcefully screwed into S1.

[0078] In addition, such as Figure 3 As shown, each of the sidewall portions 24 and 25 of component 20A1 in module 20A has an opening in the Y direction that penetrates the sidewall portion 24 or the sidewall portion 25. Specifically, the sidewall portion 24 has an opening 26 that penetrates the sidewall portion 24 in the Y direction. In addition, the sidewall portion 25 has an opening 27 that penetrates the sidewall portion 25 in the Y direction.

[0079] The following advantages are available from providing opening 26 or opening 27: Specifically, by forming opening 26, sidewall 24 forms an arched shape. Similarly, by forming opening 27, sidewall 25 forms an arched shape. In this case, the effect of sidewall 24 and sidewall 25 on... Figure 3 The strength of the external force applied in the Z direction is shown.

[0080] Or, such as Figure 3 As shown, when the superconducting wire 10 includes a cooling tube 13 in addition to the laminate 11A of the superconducting wire 11, there is a case where the cooling tube 13 is led out in a direction different from the extension direction of the laminate 11A. In this case, the opening 26 and the opening 27 can be used as paths for leading out the cooling tube 13. In other words, by providing the opening 26 and the opening 27, the degree of freedom in the layout of the cooling tube 13 can be increased.

[0081] Alternatively, when the superconducting wire 10 is used as a coil, there may be a situation where, after the superconducting wire 10 is shaped into a coil with the protective member 100 installed, the superconducting wire 10 is sealed with a sealing material to prevent positional displacement. In this case, with the openings 26 and 27 provided, these openings can be used as supply paths for the sealing material. In other words, by providing the openings 26 and 27, the sealing material for sealing the superconducting wire 10 can be easily supplied. Furthermore, the sealing material may be made of resin or metal.

[0082] exist Figure 3 At least one of the top 22, bottom 23, side wall portion 24, and side wall portion 25 shown is provided with a groove for inserting the cable 30. Figure 3 In the example shown, since the four cables 30 are engaged, a slot is formed for inserting each of the four cables 30.

[0083] Specifically, slots 31T1 and 31T2, capable of inserting a cable 31, are formed in the area where the bottom 23 and the side wall portion 24 intersect. Slot 31T1 is a slot provided in component 20A1 and has an opening opposite to component 20A1. Slot 31T1 communicates with the cable holding portion TR1 at its bottom. Slot 31T2 is a slot provided in component 20A2 and has an opening on the lower surface of the bottom 23. Slot 31T2 communicates with the cable holding portion TR2 (see reference) at its bottom. Figure 4 ) or cable retainer TR3 (refer to Figure 4 Connected. For example... Figure 3 As shown, by inserting the cable 31 into the slots 31T1 and 31T2, which have openings facing different directions, the component 20A1 and component 20A2 can be connected via the cable 31 held in the cable holding parts TR1, TR2, and TR3.

[0084] A slot 32T for inserting a cable 32 is formed in the area where the top 22 intersects with the side wall portion 24. A slot 33T for inserting a cable 33 is formed in the area where the top 22 intersects with the side wall portion 25. A slot 34T for inserting a cable 34 is formed in the area where the bottom 23 intersects with the side wall portion 25.

[0085] The superconducting wire 10 is wound around the core of the coil while held in the protective member 100. During this operation, the superconducting wire 10 is reinforced by multiple cables 30, which can prevent or suppress damage to the superconducting wire 10 caused by external forces during operation.

[0086] <Module 20B> Next, regarding... Figure 2 The structure of module 20B shown will be explained. Figure 7 It is along Figure 2 A cross-sectional view of the BB line. Figure 8 It indicates assembly. Figure 7 The diagram shows the state of the module before it was displayed. Figure 9 It indicates that the components have been assembled. Figure 7 A 3D view showing the state of the two components of the module. Figure 8 and Figure 9 The image only shows... Figure 7 The cable 32, one of the plurality of cables 30 shown, facilitates the connection between component 20B1 and component 20B2. In this embodiment, besides... Figure 8 and Figure 9 In addition to the cable 32 shown, there is also a clip. Figure 7 The cables shown are 31, 33, and 34.

[0087] As mentioned above, Figures 3 to 6 The module 20A shown has the advantage of being able to fix the superconducting wire 11 laminate 11A with screw SS1. On the other hand, from the viewpoint of ease of assembly of module 20A, a simple structure that does not necessarily require fixing with screw SS1 is preferred.

[0088] like Figure 2 As shown, the protective component 100 also has a cable 32 that extends in the X direction and engages with a plurality of modules 20.

[0089] like Figure 7 As shown, module 20B includes component 20B1 constituting the top 22 and sidewall portion 24, and component 20B2 constituting the bottom 23 and sidewall portion 25. In this embodiment, module 20B is formed by component 20B1 and component 20B2.

[0090] like Figure 8 and Figure 9 As shown, component 20B1 has a cable holding portion TR5 and a cable holding portion TR6 formed along the X direction in a state capable of clamping the cable holding portion TR4 of component 20B1 (see reference). Figure 9 ), and a fixing part BP3 that can fix part 20B2.

[0091] Component 20B2 has a cable holding portion TR4 that can engage with cable 32, and a fixing portion BP4 that can be fixed to component 20B1. The cable holding portion TR4 is formed in the side wall portion 24 (see reference). Figure 7 ) and top 22 (refer to) Figure 7 The position of the assembly and the side wall portion 25 (refer to) Figure 7 ) and bottom 23 (refer to) Figure 7The fixing part BP3 is formed in either the position where the side wall part 24 is combined with the top 22 or the position where the side wall part 25 is combined with the bottom 23. In this embodiment, a cable holding part TR4 is formed at the position where the side wall part 24 is combined with the top 22, and a fixing part BP3 is formed at the position where the side wall part 25 is combined with the bottom 23.

[0092] In the case of module 20B, it does not have Figure 3 The module 20A shown has a threaded hole TH1. In other words, module 20B does not have the function of fixing the superconducting wire 11 in the laminate 11A, but only covers the superconducting wire 10 (see reference). Figure 1 Installed around the perimeter. With Figure 3 Compared to module 20A, module 20B can be assembled in fewer sequences. Therefore, by setting module 20B as a module 20 placed in the middle of an arrangement of multiple modules 20, assembly efficiency can be improved.

[0093] In addition, such as Figure 9 As shown, in a side view in the X direction, the holding space 21 of module 20B is formed in a cylindrical shape. Figure 1 As shown, a metal strip in the shape of a cylindrical tube can be easily accommodated inside the holding space 21 of module 20B.

[0094] like Figure 7 As shown, the laminate 11A does not contact components 20B1 and 20B2 of module 20B. A gap exists between the laminate 11A and the metal strip 12. Therefore, in Figure 7 In the example shown, a metal strip 12 and a spacer 14 are disposed between the top 22 and the laminate 11A in the Z direction. Similarly, a metal strip 12 and a spacer 14 are disposed between the bottom 23 and the laminate 11A in the Z direction. Specifically, in the Z direction, the spacer 14 is disposed between the metal strip 12 and the laminate 11A.

[0095] Each of cables 31, 32, 33, and 34 engages with module 20B. Therefore, similar to module 20A, module 20B has slots formed for inserting each of the four cables 30.

[0096] Specifically, in the area where the top 22 intersects with the side wall portion 24, slots 32T1 and 32T2 are formed for inserting wire 32. Slot 32T1 is a slot provided on component 20B1, and has an opening on the upper surface 22a of the top 22. Slot 32T1 intersects with the cable holding portion TR5 (see reference 20B1) at the bottom of the slot. Figure 9 ) or cable retainer TR6 (refer to Figure 9The groove 32T2 is a groove provided in component 20B2 and has an opening opposite to component 20B1. The groove 31T2 communicates with the cable holding part TR4 at its bottom. (Example) Figure 7 As shown, by inserting a cable 32 into slots 32T1 and 32T2, which have openings facing different directions, component 20B1 and component 20B2 can be connected via the cable 32 held in cable holding parts TR4, TR5, and TR6.

[0097] Additionally, a slot 31T for inserting a cable 31 is formed in the area where the bottom 23 intersects with the side wall portion 24. A slot 33T for inserting a cable 33 is formed in the area where the top 22 intersects with the side wall portion 25. The slot 33T has an opening on the upper surface 22a of the top 22. A slot 34T for inserting a cable 34 is formed in the area where the bottom 23 intersects with the side wall portion 25. The slot 34T has an opening on the side of the bottom 23.

[0098] <Method for connecting to the lead wire> Next, we will discuss the matter regarding Figure 2 The method of electrically connecting the lead portion 40 to the superconducting wire 10 will be described. Figure 10 It is along Figure 2 A cross-sectional view of the CC line. As described above, Figure 3 The superconducting strip wire 11 shown in the figure is a stack of 152 sheets of superconducting strip wire 11. However, in Figure 10 In order to facilitate observation of the overlapping structure of the superconducting wire 11 stack 11A and the superconducting wire 16 stack 16A, the number of stacks is represented as small.

[0099] In a nuclear fusion device with a closed magnetic field, Figure 2 When the superconducting wire 10 shown is used as a coil for generating a magnetic field, the lead portion 40 functions as a terminal for connecting a power supply source (not shown) to the coil. By installing the lead portion 40, which functions as a terminal, on the superconducting wire 10, external devices can be easily electrically connected to the superconducting wire 10. Figure 10 The lead portion 40 shown has a support portion 41 that supports a stack of multiple superconducting wires 16A and a cover portion 42 that covers the stack of multiple superconducting wires 16A. Each of the support portion 41 and the cover portion 42 is formed of a metal such as copper. The stack of multiple superconducting wires 16A is sandwiched between the support portion 41 and the cover portion 42. In addition, the stack of multiple superconducting wires 16A is fixed between the support portion 41 and the cover portion 42.

[0100] Each of the multiple superconducting wires 16, with use Figure 1The superconducting wire 11 described is also a wire having a superconducting layer. There are also cases where the laminate 11A of the superconducting wire 11 is held between the support portion 41 and the cover portion 42 of the lead portion 40. However, from the viewpoint of facilitating the connection of superconducting and non-superconducting metals in a good condition within the lead portion 40, it is preferable, as in this embodiment, to use the laminate 16A of the superconducting wire 16 to connect to the lead portion 40.

[0101] like Figure 10 As shown, each of the upper surface 41a of the support portion 41 and the lower surface 42b of the cover portion 42 is formed in a stepped shape. Each of the plurality of superconducting wires 16 is in contact with any segment of the stepped upper surface 41a and lower surface 42b. In addition, the laminate 16A is in close contact with the support portion 41 and the cover portion 42. Because each of the upper surface 41a of the support portion 41 and the lower surface 42b of the cover portion 42 is formed in a stepped shape, each of the superconducting wires 16 constituting the laminate 16A can contact the support portion 41 or the cover portion 42.

[0102] like Figure 2 As shown, each of the support portion 41 and the cover portion 42 has a plurality of through holes 41H and a plurality of through holes 42H. A bolt 43, penetrating both sides of the through holes 42H and 41H, is inserted into a portion of the plurality of through holes 41H and 42H. A nut 44 is mounted on the bolt 43. When the bolt 43 and nut 44 are tightened, an external force is applied in such a way that the separation distance between the support portion 41 and the cover portion 42 is brought closer. Figure 10 The laminate 16A shown is clamped between the support portion 41 and the cover portion 42 by the external force generated by the screwing in of the bolt 43 and nut 44. The surface pressure on the laminate 16A from the support portion 41 and the cover portion 42 of the lead portion 40 is, for example, about 100 MPa (megapascals).

[0103] In this embodiment, by adjusting the tightening force of the bolt 43 and nut 44, the adhesion of the contact interface between the superconducting wire 16 and the support portion 41 or the cover portion 42 can be improved. As a result, the reliability of the electrical connection between the lead portion 40 and the superconducting wire 16 can be improved.

[0104] Furthermore, the laminate 16A of the superconducting wire 16 extends from the lead portion 40 to the module 20A adjacent to the lead portion. The portion where the laminate 16A of the superconducting wire 16 is electrically connected to the laminate 11A of the superconducting wire 11 is as follows: Figure 10 The module 20A shown encloses the superconducting wire 16. In other words, the stack 16A of the superconducting wire 16 and the stack 11A of the superconducting wire 11 are disposed in the holding space 21 of the module 20A (see...). Figure 6 )middle.

[0105] In this embodiment, in the holding space 21 of module 20A (refer to...) Figure 6 Within the structure, multiple superconducting wires 11 and multiple superconducting wires 16 are alternately stacked. In this structure, compared to the case where only the stack 16A of the superconducting wires 16 is disposed on the stack 11A of the superconducting wires 11, the contact area between the superconducting wires 11 and 16 can be increased. In other words, the paths for electrically connecting the superconducting wires 11 and 16 are increased. Therefore, the reliability of the electrical connection between the superconducting wires 11 and 16 can be improved.

[0106] Furthermore, in this embodiment, there are cases where multiple (e.g., two or three) superconducting wire strips 11 and multiple (e.g., two or three) superconducting wire strips 16 are alternately stacked. However, from the viewpoint of increasing the contact area between the superconducting wire strips 11 and 16, it is preferable, as shown in this embodiment, that the superconducting wire strips 11 and 16 are alternately stacked piece by piece.

[0107] The path for increasing the electrical connection between the superconducting wires 11 and 16 is preferred at the following points: For example, in the case of partial quenching of multiple superconducting wires 11 or 16, the resistance increases in the normally conductive portion. However, if there are multiple current paths, the current preferentially flows through the path in the superconducting state. As a result, since heating at the quenching site can be suppressed, the propagation of quenching can be suppressed. In other words, the reduction in electrical characteristics caused by locally generated quenching can be suppressed.

[0108] Furthermore, the laminate 11B of superconducting wires 11 and 16 is pressed against the lower surface 22b of the top 22 by screws SS1. As described above, since the lower surface 22b of the top 22 becomes a flat surface, the laminate 11B of superconducting wires 11 and 16 is fixed within the holding space 21 of the module 20A by screwing in screws SS1 (see reference). Figure 6 ).

[0109] In addition, Figure 10 In the example shown, there are multiple (in) arranged along the X direction. Figure 10 (There are 3 screws SS1 in the middle). In this case, the force used to fix the laminate of superconducting wire 11 and superconducting wire 16 to module 20A is applied at multiple locations. Therefore, the adhesion of the alternately laminated superconducting wire 16 and superconducting wire 11 is improved. Specifically, the area of ​​the region where a good adhesion is achieved at the bonding interface of superconducting wire 16 and superconducting wire 11 is increased. As a result, the reliability of the electrical connection between superconducting wire 16 and superconducting wire 11 can be improved.

[0110] like Figure 10 As shown, in the case of module 20B, the laminate 11A does not contact the top 22 and the bottom 23. Therefore, from the viewpoint of fixing the laminate 11A as in module 20B, module 20B is unsuitable. Conversely, although module 20A is more complex to assemble than module 20B in that it requires the installation of screw SS1, it has advantages over module 20B in terms of fixing the laminate 11A. That is, in order to attach the superconducting wire 10 (refer to...) Figure 2 It is connected to other components (e.g., lead wire 40) and is a module 20, preferably a module 20A structure, which is configured at the end of an arrangement of multiple modules 20.

[0111] <Application of Superconducting Cables in Connection Sections> Next, the connection method for connecting and using multiple superconducting wires will be explained. Additionally, in... Figure 2 When the superconducting wires 10 shown are connected in series along the X direction, they can be used with Figure 10 The connection method for superconducting wires 11 and 16 described herein is the same. In this case, module 20B can be used instead. Figure 10 The lead portion 40 shown is implemented by making the laminate 16A of the superconducting strip wire 16 into the same structure as the laminate 11A of the superconducting strip wire 11.

[0112] However, in the case of using superconducting wires as coils, such as Figure 11 As exemplified by coil 200, there are cases where superconducting wires are connected in parallel to form multi-layer coils. Figure 11 This is a perspective view illustrating an example of using superconducting wire as a coil.

[0113] exist Figure 11 In the case of coil 200 shown, it becomes a structure in which the first layer coil 201 and the second layer coil 202 are connected. In this case, in order to electrically connect the first layer coil 201 and the second layer coil 202, a connection method in which the wire is bent at 90 degrees relative to the extension direction of the superconducting wire is necessary.

[0114] The structure of a particularly effective protective component used in a connection method that bends 90 degrees relative to the extension direction of the superconducting wire will be described below. Figure 12 It means in Figure 11 A perspective view of an example of a module that protects the portion of the superconducting wire connected in parallel among the multiple modules used in the coil shown. Figure 13 It is along Figure 12 A cross-sectional view of the DD line. Figure 14 It is along Figure 12 A cross-sectional view of the EE line. Figure 5 It means Figure 12 A 3D view of one of the two modules shown. Figure 15 It indicates assembly. Figure 13 The diagram shows the state of the module before it was displayed. Figure 16 It indicates that the components have been assembled. Figure 13 A 3D view showing the state of the three components of the module. Additionally, Figure 15 and Figure 16 Indicates will Figure 12 , Figure 13 and Figure 14 The module shown is in a flipped-up / flipped state. Figure 17 Viewed from the bottom side Figure 16 The top view of the module shown. Figure 18 It means to Figure 12 The diagram shows a 3D view of the superconducting wire flipped up and down with multiple cables and the bottom removed.

[0115] in addition, Figure 12 This indicates that two are arranged side by side along the extension direction of the superconducting wire 10. Figure 11 The state of module 20C is shown. Additionally, in... Figure 12 In the text, the cooling pipe 13 of the superconducting wire 10 is omitted (see reference). Figure 3 ) and spacer 14 (refer to Figure 3 The cooling pipe 13 of the superconducting wire 10A (see reference) Figure 13 ) and spacer 14 (refer to Figure 13 The illustration is shown in the image. Figure 13 and Figure 14 In, with Figure 10 Similarly, to facilitate observation of the structure where any one of the superconducting strip wires 11 and 17 overlaps with the superconducting strip wire 18, the number of layers is reduced.

[0116] In the examples described below, Figure 12 The superconducting wire (linear material) 10 and superconducting wire (linear material) 10A shown are... Figure 13 The stack 18A of the multiple superconducting strip wires 18 shown is protected by a linear material protective component. The superconducting wire includes multiple superconducting strip wires 11 stacked together. The superconducting wire 10A includes multiple superconducting strip wires 17 stacked together (a stack 17A composed of multiple superconducting strip wires 17). The superconducting strip wires 17 and 18 are made of the same material as the already described superconducting strip wires 11, therefore, a repeated description is omitted.

[0117] like Figure 12As shown, each of the superconducting wires 10 and 10A extends in the X direction. Furthermore, at locations where the plurality of superconducting strip wires 11 and 17 are electrically connected, the superconducting wires 10 and 10A are adjacent to each other. In other words, a portion of the superconducting wire 10 and a portion of the superconducting wire 10A are adjacent to each other. In the adjacent portions of the superconducting wires 10 and 10A, the plurality of superconducting strip wires 11 and 17 are connected via... Figure 13 The multiple superconducting strip wires 18 shown are electrically connected.

[0118] exist Figure 11 In the coil 200 shown, a first layer coil 201 is formed by a module group 20GA consisting of a superconducting wire 10 and a plurality of modules 20 holding the superconducting wire 10. Additionally, in the coil 200, a second layer coil 202 is formed by a superconducting wire 10A and a module group 20GB consisting of a plurality of modules 20 holding the superconducting wire 10A.

[0119] As multiple modules 20 held together in a manner that surrounds the superconducting wire 10, for example, can be used Figures 7 to 9 Module 20B is described. However, in Figure 11 In the example shown, in multiple modules 20, the ends of the arrangement connected to the lead section are used Figures 3-6 Module 20A is described.

[0120] In addition, such as Figure 11 As shown, in the case of coil 200, there is module 20C with a structure different from modules 20A and 20B. For example... Figure 12 As shown, module 20C is used to surround multiple superconducting strip wires 18 (see reference). Figure 13 The module 20 is electrically connected to maintain multiple superconducting wires 11 and multiple superconducting wires 17.

[0121] In the 20GA module group (see reference) Figure 11 Multiple modules 20 and module 20C are fitted with cables 31 extending in the X direction. In the module group 20GB (refer to...) Figure 11 Multiple modules 20 and module 20C are fitted with cables 31A extending in the X direction.

[0122] like Figure 16 As shown, module 20C has a retaining superconducting wire 10 (refer to...) Figure 12 ) holding space 21A, holding superconducting wire 10A (refer to) Figure 12The module 20C has a holding space 21B, and a holding space 21C that connects the holding spaces 21A and 21B and holds a plurality of superconducting strip wires 18. In addition, the module 20C has a top 22 covering the holding spaces 21A and 21B, a bottom 23A located on the opposite side of the top 22 via the holding space 21A, and a bottom 23B located on the opposite side of the top 22 via the holding space 21B.

[0123] like Figure 14 As shown, module 20C has a side wall portion 24 connected to each of the top 22 and the bottom 23A, a side wall portion 25 connected to each of the top 22 and the bottom 23B and located on the opposite side of the side wall portion 24, and a middle wall portion 28 located between the side wall portion 24 and the side wall portion 25.

[0124] When the structure of module 20C is classified according to its separable components, it can be represented as follows. That is, as... Figure 14 As shown, module 20C has a component 20C1 that forms a top 22, a side wall portion 24, a side wall portion 25, and a middle wall portion 28. Module 20C has a component 20C2 that is connected to component 20C1 via a cable 31 and forms a bottom 23A. Module 20C has a component 20C3 that is connected to component 20C1 via a cable 31A and forms a bottom 23B.

[0125] like Figure 15 As shown, component 20C1 is formed at the junction of side wall portion 24 and bottom portion 23A, and has a cable holding portion TR1 capable of engaging with cable 31. Component 20C1 is formed at the junction of middle wall portion 28 and bottom portion 23A, and has a fixing portion BP5 capable of fixing component 20C2. Component 20C1 is formed at the junction of side wall portion 25 and bottom portion 23B (see reference). Figure 6 The assembly position has a fixing part BP6 that can fix the component 20C3.

[0126] like Figure 17 As shown, component 20C2 has a side 20s1 disposed along the side wall portion 24, a side 20s2 disposed on the opposite side of side 20s1, and a central region CR1 disposed in the Y direction orthogonal to the X direction between side 20s1 and side 20s2.

[0127] Component 20C2 has a cable holding portion TR2 and a cable holding portion TR3 formed in a state capable of clamping the cable holding portion TR1 of component 20C1 along 20s1. Each of the cable holding portion TR2 and the cable holding portion TR3 extends along the X direction. In the X direction, the cable holding portion TR1 of component 20C1 is clamped between the cable holding portion TR2 and the cable holding portion TR3.

[0128] Component 20C2 is formed at the junction of the middle wall portion 28 and the bottom portion 23B, and has a cable holding portion TR4 capable of engaging with cable 31A. Component 20C2 is disposed in the central region CR1 and has a threaded hole TH1 formed through component 20C2 in the thickness direction. Component 20C2 is disposed along the side 20s2 and has a fixing portion BP7 capable of being fixed to the fixing portion BP5 of component 20C1 (see reference). Figure 15 ).

[0129] Component 20C3 has a side 20s3 disposed along side 20s2 of component 20C2, a side 20s4 disposed on the opposite side of side 20s3, and a central region CR2 disposed in the Y direction between side 20s3 and side 20s4. Each of side 20s1, side 20s2, side 20s3 and side 20s4 extends in the X direction.

[0130] Component 20C3 has a cable holding portion TR5 and a cable holding portion TR6 formed in a state that can clamp the cable holding portion TR4 of component 20C2 along the side 20s3. Each of the cable holding portion TR5 and the cable holding portion TR6 extends in the X direction. In the X direction, the cable holding portion TR4 of component 20C2 is clamped between the cable holding portion TR5 and the cable holding portion TR6.

[0131] Component 20C3 has a threaded hole TH2 disposed in the central region CR2 and formed in such a way that it penetrates through component 20C3 in the thickness direction. Further, component 20C3 has a fixing part BP6 disposed along the side 20s4 and capable of being fixed to component 20C1 (see reference). Figure 15 The fixing part BP8 (refer to) Figure 16 ).

[0132] exist Figures 12 to 17 In the case shown, such as Figure 15 and Figure 16 As shown, by using the fixing part BP7 (refer to) as a protrusion... Figure 15 ) and the fixing part BP5 as a recess (see Figure 15 The two parts are combined to form a structure in which the fixing part BP5 and the fixing part BP7 are tightly attached and fixed to each other. That is, in Figures 12 to 17 In the example shown, the fixing part BP5 and the fixing part BP7 are fixed by riveting. Similarly, Figure 15 The fixing part BP6 shown is connected to the fixing part by riveting. Figure 16 The fixing part BP8 of component 20C3 shown is fixed. The fixing part BP8 of component 20C3 has a... Figure 15 The convex part with the same structure as the fixing part BP7 shown is also shown.

[0133] In addition, as already explained Figure 5 and Figure 6The fixing method for fixing part BP1 and fixing part BP2 shown is the same. Figure 15 The fixing method of fixing part BP5 and fixing part BP7 shown, and Figure 16 The fixing method for the fixing parts BP6 and BP8 shown is not limited to riveting; various variations exist. For example, fixing by welding can be illustrated.

[0134] like Figure 13 as well as Figure 17 As shown, threaded hole TH1 is located in the central area CR1 (refer to...). Figure 17 It is formed in such a way that it penetrates through the component 20C2 in the thickness direction. Similarly, the threaded hole TH2 is disposed in the central region CR2 (see reference). Figure 17 ), formed in such a way that it penetrates the component 20C3 in the thickness direction.

[0135] Screw SS1 is inserted into threaded hole TH1. Figure 13 In the example shown, one end of the screw SS1 contacts the laminate 11C, wherein superconducting wires 11 and 18 are alternately laminated. In this embodiment, the module 20C provided at the connection portion of the superconducting wires can fix the laminate 11C in the holding space 21A (see reference 11C) by the screw SS1. Figure 16 )Inside.

[0136] Similarly, screw SS2 is inserted into threaded hole TH2. Figure 13 In the example shown, one end of screw SS2 contacts the laminate 17C, wherein superconducting wires 17 and 18 are alternately laminated. In this embodiment, module 20C, located at the connection portion of the superconducting wires, can secure the laminate 17C to the holding space 21B (see reference 17C) by screw SS2. Figure 16 )Inside.

[0137] With each of the laminates 11C and 17C fixed, the laminate 18A of the superconducting strip wire 18 disposed between the laminates 11C and 17C in the Y direction is fixed in the holding space 21C (see reference). Figure 16 )middle.

[0138] In the case of module 20C, since the laminate 11C is fixed by screw SS1, the electrical connection reliability of superconducting wire 11 and superconducting wire 18 can be improved. Similarly, in the case of module 20C, since the laminate 17C is fixed by screw SS2, the electrical connection reliability of superconducting wire 17 and superconducting wire 18 can be improved.

[0139] In addition, such as Figure 17 As shown, there are multiple (in) arranged along the X direction. Figure 17(3 screws in the middle) SS1. If already used Figure 10 Explanation, used to... Figure 13 The forces that secure the superconducting wires 11 and 18 to the module 20C act at multiple locations. Therefore, the adhesion of the alternating superconducting wires 11 and 18 is improved. Specifically, the area of ​​the region achieving good adhesion at the bonding interface of the superconducting wires 11 and 18 is increased. As a result, the electrical connection reliability of the superconducting wires 11 and 18 can be improved. Similarly, in Figure 17 In the example shown, there are multiple (in) arranged along the X direction. Figure 17 There are three screws (SS2). Therefore, it can improve... Figure 13 The electrical connection reliability of the superconducting wire 17 and superconducting wire 18 shown.

[0140] Screws SS1 and SS2 are headless screws (also known as locating screws) without threads. Screw SS1 can be completely embedded in the threaded hole TH1. Similarly, screw SS2 can be completely embedded in the threaded hole TH2. By using headless screws as screws SS1 and SS2, linear material covered by the protected component can be easily stacked.

[0141] Furthermore, in order to facilitate the fixing of the laminate 11A with screws SS1, module 20C is preferably configured as follows. That is, Figure 14 The inner surface 24a of the sidewall portion 24 and the inner surface 25a of the sidewall portion 25 of the component 20C1 of the module 20C shown are each in the X direction (refer to) Figure 2 The bottom 23A of module 20C has an arc shape when viewed from the side. The upper surface 23a1 of the bottom 23A and the upper surface 23a2 of the bottom 23B of module 20C are both flat surfaces. In addition, the lower surface 22b of the top 22 of module 20C is a flat surface.

[0142] In other words, each of the surfaces of module 20C at its bottom 23A that contact the laminate 11C (upper surface 23a1) and at its top 22 that contact the laminate 11C (lower surface 22b) is a flat surface. Similarly, each of the surfaces of module 20C at its bottom 23B that contact the laminate 17C (upper surface 23a2) and at its top 22 that contact the laminate 17C (lower surface 22b) is a flat surface.

[0143] In this case, the adhesion between laminate 11C and lower surface 22b, as well as the adhesion between laminate 11C and upper surface 23a1, can be improved. Similarly, the adhesion between laminate 17C and lower surface 22b, and the adhesion between laminate 17C and upper surface 23a2, can be improved respectively.

[0144] In addition, such as Figure 13 As shown, each of the sidewall portions 24 and 25 of component 20A1 in module 20C has an opening in the Y direction that penetrates the sidewall portion 24 or the sidewall portion 25. Specifically, the sidewall portion 24 has an opening 26 that penetrates the sidewall portion 24 in the Y direction. In addition, the sidewall portion 25 has an opening 27 that penetrates the sidewall portion 25 in the Y direction.

[0145] As already explained, by providing opening 26 or opening 27, the sidewall portion 24 and sidewall portion 25 can be improved to better support the sidewall portion 24 and sidewall portion 25. Figure 13 The strength of the external force applied in the Z direction is shown. Other effects of providing opening 26 or opening 27 are the same as those already described, therefore, a repeat description is omitted.

[0146] like Figure 13 As shown, slots 31T1 and 31T2, capable of inserting a cable 31, are formed in the area where the bottom 23A intersects with the side wall portion 24. Slot 31T1 is a slot provided in component 20C1, having an opening opposite to component 20C1. Slot 31T1 communicates with the cable holding portion TR1 at its bottom. Slot 31T2 is a slot provided in component 20C2, having an opening in the lower surface of the bottom 23A. Slot 31T2 communicates with the cable holding portion TR2 (see reference) at its bottom. Figure 17 ) or cable retainer TR3 (refer to Figure 17 Connected. For example... Figure 13 As shown, by inserting the cable 31 into the slots 31T1 and 31T2, which have openings facing different directions, the component 20C1 and component 20C2 can be connected via the cable 31 held in the cable holding parts TR1, TR2, and TR3.

[0147] At the bottom 23A and the middle wall 28 (see reference) Figure 14 The area where they intersect has grooves 31AT1 and 31AT2 for inserting cable 31A. Groove 31AT1 is a groove provided in component 20C2 and has an opening opposite to component 20C3. Groove 31AT1 has a cable holding part TR4 at its bottom (see reference). Figure 17 The groove 31AT2 is a groove provided on component 20C3, and has an opening on the lower surface of the bottom 23B. The groove 31AT2 connects to the cable holding part TR5 at the bottom of the groove (see reference). Figure 17 ) or cable retainer TR6 (refer to Figure 17 ( ) Connect. As shown in FIG33, by inserting cable 31A into slots 31AT1 and slot 31AT2 which have openings facing different directions, component 20C2 and component 20C3 can be connected via cable 31A held in cable holding parts TR4, TR5, TR6.

[0148] exist Figure 13In the example shown, in addition to the above, a slot 32T for inserting a cable 32 is formed in the area where the top 22 intersects with the side wall portion 24. In the top 22 and the middle wall portion 28 (see...) Figure 14 The area where the top 22 and the side wall 25 intersect has a slot 33T for inserting cable 33 and a slot 32AT for inserting cable 32A. The area where the bottom 23A and the middle wall 28 intersect has a slot 34T for inserting cable 34. The area where the bottom 23B and the side wall 25 intersect has a slot 34AT for inserting cable 34A.

[0149] Figure 18 It means to Figure 12 The image shows a 3D view of the superconducting wire flipped up and down, with multiple cables and the bottom section removed. Figure 12 In the example shown, multiple (in) Figure 12 The two modules (20C) are arranged adjacently. In other words, in Figure 18 In the example shown, a superconducting wire 10 comprising multiple superconducting strip wires 11 and a superconducting wire 10A comprising multiple superconducting strip wires 17 are connected by multiple modules 20C arranged adjacent to each other. In this case, the cross-sectional area of ​​the path through which the superconducting current flows can be increased compared to the case where the superconducting wires 10 and 10A are connected by only one module 20C.

[0150] like Figure 13 As shown, in the region where only superconducting wires 18 are stacked, multiple superconducting wires 18 are stacked separately from each other. Therefore, the number of superconducting wires 18 in the stack 18A is, for example, half the number of superconducting wires 11 in the stack 11A. Therefore, in the superconducting wire 10 (refer to...) Figure 18 ) and superconducting wire 10A (refer to Figure 18 When connected via only one module 20C, the cross-sectional area of ​​the current path in the superconducting state is halved in part of the stack 18A.

[0151] like Figure 18 As shown, when superconducting wires 10 and 10A are connected by two adjacent modules 20C, portions of the laminate 18A are connected in parallel. Therefore, the reduction in the cross-sectional area of ​​the path through which the superconducting current flows in the joint can be compensated.

[0152] Additionally, using Figures 11 to 18 The connection method of module 20C shown can also be used. Figures 3 to 6 This is achieved using module 20A. For example, combining two modules 20A allows for the connection method where module 20C is a single module. Furthermore, combining four modules 20A, such as... Figure 12 and Figure 18 As shown, a method for connecting two modules 20C can be implemented. However, if using... Figures 11 to 18 As explained, in the case of parallel connection of superconducting wires, for example from improving... Figure 11 From the perspective of the positional accuracy of the first layer coil 201 and the second layer coil 202 shown, it is more preferable to use module 20C to connect them in parallel.

[0153] In addition, such as Figure 13 and Figure 18 As shown, the method of electrically connecting a plurality of superconducting strip wires 18 extending in a direction (Y direction) intersecting (specifically, orthogonal) with the extension direction (X direction) of the superconducting wire 10 and a plurality of superconducting strip wires 11 constituting the superconducting wire 10 can be applied to use Figure 10 The connection of the lead wire section is explained.

[0154] For example, in Figure 11 In the case of the coil 200 shown, the lead portion 40 is connected to the module 20A disposed at the end of the arrangement of the modules 20. In the case of the coil 200, the lead portion 40 extends in a direction orthogonal to the arrangement direction of the plurality of modules 20 constituting the coil 200. In this case, using... Figure 10 The description describes the multiple superconducting strip wires 16 clamped in the lead section 40, each via Figure 3 The opening 26 or opening 27 of the module 20A shown extends into the retaining space 21 of the module 20A (see reference). Figure 6 Within the module 20A, multiple superconducting wires 11 (or multiple superconducting wires 17) and superconducting wires 16 are alternately stacked in the holding space 21. Therefore, in Figure 11 In the coil 200 shown, the lead portion 40, which extends in a direction orthogonal to the arrangement direction of the plurality of modules 20, can be electrically connected to a superconducting wire.

[0155] <Example of the connection method with the lead portion> Next, regarding the use Figure 10 A variation of the connection method with the lead portion will be explained. For example, using... Figure 10 As explained, when superconducting wires 11 and 16 are alternately stacked, a gap BL is created between the ends of the superconducting wires 11 and 16. In the region overlapping the gap BL in the Z-direction, the number of superconducting wires 11 (or 16) is relatively small. For example, in… Figure 10 In the example shown, 152 superconducting wires are stacked in the region that does not overlap with the gap BL. On the other hand, in the region that overlaps with the gap BL, the number of superconducting wires is half that of 152 (76).

[0156] In this case, the path through which the current flows in the superconducting state limits the maximum current value (hereinafter referred to as the maximum current value) that can flow in the region with the fewest number of layers (e.g., the region with 76 layers). In other words, from the viewpoint of flowing a large current, the region with the gap BL becomes the bottleneck.

[0157] However, it is difficult to configure as Figure 10 The ends of the superconducting wire 11 and the superconducting wire 16 shown are in contact with each other when they are facing each other, and a gap BL is inevitably generated.

[0158] The following describes an implementation method for reducing the limitation on the maximum current value generated by the gap BL by designing the stacking state of the superconducting strip wire 11 and the superconducting strip wire 16. Figure 19 It means to Figure 10 Cross-sectional view of the deformed example.

[0159] Figure 19 The linear material protective component shown is at the following points and Figure 10 The linear material protective components shown are different. Figure 19 In the illustrated variant, each of the plurality of superconducting strip wires 11 is electrically connected to the lead portion 40 via a plurality of superconducting strip wires 16, which are clamped in the lead portion 40 disposed adjacent to the module 20A. This is similar to the use of Figure 10 The examples used are the same.

[0160] Between the lead section 40 and the module 20B, starting from the side closest to the lead section 40, the first module 20A (module 20AA), the second module 20A (module 20AB) and the third module 20A (module 20AC) are arranged sequentially along the X direction.

[0161] The lead portion 40 includes a support portion 41 and a cover portion 42. The support portion 41 supports a stack 16A of multiple superconducting wires 16, and the cover portion 42 covers the stack 16A. The stack 16A is sandwiched between the support portion 41 and the cover portion 42 and extends toward the first module 20AA.

[0162] Multiple superconducting wires 11 and multiple superconducting wires 16 are disposed in the holding space 21 of each of the first, second and third modules 20A (see reference). Figure 6 In the first, second, and third modules 20A, multiple superconducting wires 11 and multiple superconducting wires 16 are stacked in the holding space 21 of each of the modules 20A.

[0163] Structure and use of modules 20AA, 20AB and 20AC Figures 3 to 6 The description is the same as module 20A.

[0164] exist Figure 19 In the example shown, by arranging multiple modules 20A adjacent to each other along the X direction, the number of gaps BL that overlap each other in the thickness direction (Z direction) can be reduced.

[0165] exist Figure 19 In the example shown, in the first layer (e.g., the layer closest to the bottom 23), the superconducting wire 11 extends from the laminate 11A protected by module 20B via the third module 20AC to the second module 20AB. The superconducting wire 11 terminates before reaching the first module 20AA. In the first layer, the superconducting wire 16 extends from the laminate 16A held in the lead portion 40 to the first module 20AA and terminates at the boundary between module 20AA and module 20AB.

[0166] In the second layer (e.g., the layer directly above the first layer), superconducting wire 11 extends from the laminate 11A protecting module 20B to the third module 20AC. Superconducting wire 11 terminates before reaching the second module 20AB. In the second layer, superconducting wire 16 extends from the laminate 16A held in the lead portion 40 via the first module 20AA to the second module 20AB. Superconducting wire 16 terminates at the boundary between modules 20AB and 20AC.

[0167] In the third layer (e.g., the layer directly above the second layer), the superconducting strip 11 extends from the laminate 11A protected by module 20B, through the third module 20AC and the second module 20AB, to the first module 20AA. The superconducting strip 11 terminates before reaching the lead portion 40. In the third layer, the superconducting strip 16 terminates at the boundary between the lead portion 40 and the first module 20AA.

[0168] In the fourth layer (e.g., the layer directly above the third layer), the superconducting wire 11 terminates between the laminate 11A protecting module 20B and the third module 20AC. In the third layer, the superconducting wire 16 extends from the laminate 16A held in the lead portion 40 via the first module 20AA and the second module 20AB to the third module 20AC. The superconducting wire 16 terminates before reaching module 20B.

[0169] In the fifth layer (e.g., the layer directly above the fourth layer), repeat the same process as from the first to the fourth layer.

[0170] When using this layering method, the number of multiple overlapping gaps BL in the thickness direction (Z direction) of the linear material is greater than... Figure 10 The examples shown are few. For example, in Figure 19In the example shown, 152 superconducting wires are stacked in a region that does not overlap with the gap BL.

[0171] On the other hand, in the region overlapping with the gap BL, the number of superconducting wire layers is more than half of 152 (76 layers) (114 layers). In other words, in this modified example, in the region where superconducting wires 11 and 16 are stacked, the minimum number of layers (114 layers) is greater than half of the maximum number of layers (152 layers). Figure 19 In the example shown, in the region where superconducting wires 11 and 16 are stacked, the minimum number of stacks (114 pieces) is 75% of the maximum number of stacks (152 pieces).

[0172] According to this modified example, in the path through which the current flows in the superconducting state, the number of layers in the part with the fewest layers can be more than half of the maximum number of layers. Therefore, the maximum current value can be increased.

[0173] Figure 19 The variation shown can be represented as follows. The stack of multiple superconducting wires 11 and multiple superconducting wires 16 is secured by screws SS1 inserted into threaded holes TH1 provided in each of the first, second and third modules 20A.

[0174] In the X direction, there is a gap BL between each of the plurality of superconducting strip wires 11 and the plurality of superconducting strip wires 16. In the stacking direction of the plurality of superconducting strip wires 11 and the plurality of superconducting strip wires 16, the total thickness of the gaps BL is greater than half the thickness of the stack 11A.

[0175] <Variation example of arranging the spacer in the retaining space> Next, regarding the use Figure 10 A variation of the connection method with the lead wire will be explained. Figure 20 It means to Figure 3 Cross-sectional view of the deformed example.

[0176] Figure 20 The protective component module 20A shown is at the following points with Figure 3 The protective component shown is different from module 20A. That is, in Figure 20 In the modified example shown, a metal plate 19 is disposed on the upper surface 23a of the bottom 23. A screw SS1 inserted into the threaded hole TH1 is connected to the metal plate 19.

[0177] In the above embodiment, an example of 152 superconducting wires 11 stacked together is given and described. However, there are various variations in the dimensions (thickness or width, etc.) and number of stacks of the superconducting wires 11. On the other hand, considering the manufacturing efficiency of the components constituting the module of the protective component, it is preferable to manufacture a highly versatile component that can handle a certain number of stacks, rather than manufacturing a dedicated component based on the number of stacks of the superconducting wires 11.

[0178] Therefore, in this modified example, a metal plate 19, which functions as a spacer, is inserted between the laminate 11A of multiple superconducting wires 11 and the upper surface 23a of the bottom 23. Figure 20 In the example shown, multiple metal plates 19 are stacked. By using multiple metal plates 19 in this way, it is easy to accommodate changes in the number of layers.

[0179] Furthermore, in this modified example, the screw SS1 and the superconducting wire 11 do not come into contact. Therefore, even if the screw SS1 is tightened forcefully, it is possible to prevent the force from the screw SS1 from being concentrated on a specific part of the superconducting wire 11. As a result, damage to the superconducting wire 11 can be prevented.

[0180] <Methods for connecting superconducting wires> Next, utilize what has already been used Figure 10 The example illustrates the connection method for superconducting wires. Figure 21 This is an explanatory diagram illustrating an example of the process flow for connecting superconducting wires. Figure 22 It means through Figure 21 The diagram shows an enlarged cross-sectional view of the linear material after the connection method of the superconducting wires is shown. Figure 21 In the superconducting wire connection method shown, the following will be used Figure 10 The method of electrically connecting the lead portion 40 and the superconducting wire 10 described herein is generalized as a method for connecting multiple superconducting wires 10. Figure 10 The method for electrically connecting the lead portion 40 and the superconducting wire 10 is described as follows: Figure 21 One method of connecting superconducting wires is shown.

[0181] Figure 21 The superconducting wire connection method shown includes a first superconducting wire preparation step, a second superconducting wire preparation step, a stacking step, a module preparation step, and a screw fastening step. Additionally, Figure 21The execution sequence of the shown processes can be implemented in various ways. For example, each of the first and second superconducting wire preparation processes must be completed before the lamination process, but the execution order of the first and second superconducting wire preparation processes is not particularly limited. Additionally, the module preparation process must be completed before the screw fastening process, but there are cases where it is completed before the lamination process or after the lamination process. On the other hand, the screw fastening process must be performed after both the lamination process and the module preparation process.

[0182] exist Figure 21 In the first superconducting wire preparation process shown, preparation Figure 22 The superconducting wire 10 shown has a laminate 11A formed by a plurality of superconducting strip wires 11 stacked together.

[0183] exist Figure 21 In the second superconducting wire preparation process shown, preparation Figure 22 The superconducting wire 10B shown has a laminate 9A formed by multiple superconducting strip wires 9 stacked together.

[0184] exist Figure 21 In the layering process shown, layers are alternately stacked in a mutually overlapping manner. Figure 22 A portion of each of the multiple superconducting wires 11 and a portion of each of the multiple superconducting wires 9, as shown, form a laminate 9B. Additionally, regarding... Figure 21 The details of each step in the stacking process shown will be described later. (Regarding use) Figure 10 Similarly, in the case of the laminate 9B, there exists a situation where multiple (e.g., two or three) superconducting strip wires 11 and multiple (e.g., two or three) superconducting strip wires 9 are alternately laminated. However, from the viewpoint of increasing the contact area between the superconducting strip wires 11 and 16, as... Figure 22 As shown, preferably, the superconducting wire 11 and the superconducting wire 9 are stacked alternately in a mutually overlapping manner.

[0185] exist Figure 21 In the module preparation process shown, module 20A, which serves as a protective component, is prepared to be held in an enclosing manner. Figure 22 The stack shown is 9B. If already used... Figures 3 to 6 As described, module 20A includes a holding space 21 capable of holding the stacked body 9B (see reference). Figure 6 ), covering the top 22 of the retaining space 21, the bottom 23 located on the opposite side of the top 22 via the retaining space 21, and a threaded hole TH1 that penetrates the bottom 23 in the thickness direction and communicates with the retaining space 21.

[0186] exist Figure 21In the superconducting wire connection method shown, for example, in forming Figure 22 After the stacked body 9B is shown, module 20A is prepared, and module 20A is configured to surround the stacked body 9B. At this time, module 20A is as follows: Figure 5 It engages with cable 31 as shown.

[0187] After that, as Figure 5 As shown, by combining and fixing the fixing part BP1 of component 20A1 and the fixing part BP2 of component 20A2, a space 21 is formed in the retaining space 21 of module 20A (see reference). Figure 6 ) is equipped with Figure 22 The state of the stacked body 9B shown.

[0188] Next, in Figure 21 In the screw fastening process shown, the laminate 9B is fixed to the holding space 21 of module 20A by inserting screw SS1 into the threaded hole TH1 formed in module 20A and fastening it (see reference). Figure 6 ).

[0189] When multiple superconducting wires are joined and used as long superconducting wires, it is necessary to suppress heat generation at the portions connecting the superconducting wires to each other. According to this embodiment, portions of multiple superconducting wires 11 and portions of multiple superconducting wires 9 are alternately stacked in an overlapping manner, and the stacked superconducting wires 11 and 9 can be reliably brought into surface contact by screws securing the stack 9B. Therefore, the resistance value of the portions electrically connecting superconducting wires 10 and 10B can be reduced. If the resistance value of the portions electrically connecting superconducting wires 10 and 10B can be reduced, the heat generation when a large current flows through these portions can be reduced. In other words, the superconducting wire connection method according to this embodiment is a preferred method from the viewpoint of suppressing heat generation at the connection portions.

[0190] However, there is a particularly preferred method for suppressing the heating of the laminate 9B. This method will be described in detail below. Figure 23 It means Figure 22 The diagram illustrates an example of the structure of a superconducting wire. Figure 24 It is Figure 22 The image shows an enlarged cross-sectional view of a portion of the laminated structure. Additionally, Figure 22 Each of the plurality of superconducting strip wires 11 shown is with Figure 23 The superconducting strip wire 11 shown has the same structure. Similarly, Figure 22 Each of the multiple superconducting strip wires 9 shown is associated with... Figure 23 It has the same structure as the superconducting strip wire 9 shown.

[0191] like Figure 23As shown, the superconducting strip 11 includes a superconducting layer SCL1 formed of a superconducting material; a metal substrate MS1 supporting the superconducting layer SCL1; an intermediate layer MDL1 located between the superconducting layer SCL1 and the metal substrate MS1; a protective metal layer PML1 disposed on the opposite side of the intermediate layer MDL1 via the superconducting layer SCL1; and a coating metal film CMF1 covering the superconducting layer SCL1, the metal substrate MS1, the intermediate layer MDL1, and the protective metal layer PML1. Similarly, the superconducting strip 9 includes a superconducting layer SCL2 formed of a superconducting material; a metal substrate MS2 supporting the superconducting layer SCL2; an intermediate layer MDL2 located between the superconducting layer SCL2 and the metal substrate MS2; a protective metal layer PML2 disposed on the opposite side of the intermediate layer MDL2 via the superconducting layer SCL2; and a coating metal film CMF2 covering the superconducting layer SCL2, the metal substrate MS2, the intermediate layer MDL2, and the protective metal layer PML2.

[0192] Furthermore, superconducting wire 11 and superconducting wire 9 have the same structure. Therefore, although the following description focuses on the representative structure of superconducting wire 11, the same applies to the components constituting superconducting wire 9. Thus, in the following description, the metal substrate MS1 can be replaced with the metal substrate MS2, the intermediate layer MDL1 can be replaced with the intermediate layer MDL2, the protective metal layer PML1 can be replaced with the protective metal layer PML2, and the coating metal film CMF1 can be replaced with the coating metal film CMF2.

[0193] The metal substrate MS1 is used as a substrate for forming the superconducting layer SCL1. Therefore, the metal substrate MS1 is required to have mechanical strength sufficient to operate the superconducting wire 11. Furthermore, the metal substrate MS1 is preferably made of a material that suppresses interference during the formation of the superconducting layer SCL1 and has excellent oxidation resistance. For example, the metal substrate MS1 is a nickel alloy with nickel as the main component. Examples of additive elements included in the metal constituting the metal substrate MS1 include chromium and molybdenum.

[0194] Furthermore, as described above, since the metal substrate MS1 requires high support strength, the thickness of the metal substrate MS1 is greater than that of each of the other components constituting the superconducting strip 11 (superconducting layer SCL1, intermediate layer MDL1, protective metal layer PML1, and cladding metal film CMF1). For example, the thickness of the metal substrate MS1 is approximately 50 μm to 100 μm or more. On the other hand, the thickness of each of the superconducting layer SCL1, intermediate layer MDL1, and protective metal layer PML1 is approximately 2 μm to 3 μm. In addition, since the cladding metal film CMF1 is a cylindrical component, its thickness, including the hollow space, is greater than that of the metal substrate MS1. However, the thickness of the cladding metal film CMF1, excluding the hollow space, is, for example, approximately 20 μm, which is thinner than that of the metal substrate MS1.

[0195] The intermediate layer MDL1 is the base layer used to form the superconducting layer SC1. Various materials are used in the intermediate layer MDL1 to prevent direct contact between the superconducting layer SC1 and the metal substrate MS1, or to improve the properties of the superconducting layer SC1. Examples of materials constituting the intermediate layer MDL1 include laminated films of alumina, yttrium oxide, magnesium oxide, or selenium oxide.

[0196] The superconducting layer SC1 is formed from a high-temperature superconductor. While there are various examples of high-temperature superconducting materials, for instance, the superconducting layer SC1 can be exemplified by superconductors containing rare-earth elements such as yttrium (Y) and gadolinium (Gd), and also including barium (Ba), copper (Cu), and oxygen (O) in addition to rare-earth elements. An example superconducting material is called REBCO.

[0197] A protective metal layer PML1 is provided to protect the upper surface of the superconducting layer SC1. To prevent the degradation of the electrical properties of the superconducting strip 11, a material with a higher conductivity than the metal substrate MS1 is used for the protective metal layer PML1. Silver (Ag) can be used as an example of a material constituting the protective metal layer PML1.

[0198] The metal coating film CMF1 is an outer shell film covering the entire stack of the superconducting layer SCL2, the metal substrate MS2, the intermediate layer MDL2, and the protective metal layer PML2. As described above, the superconducting strip wires 11 are used in a stack. Therefore, from the viewpoint of reducing the resistance in the electrical connections between the stacked multiple superconducting strip wires 11, the metal coating film CMF1 is required to have high conductivity. For the metal coating film CMF1, a material with higher conductivity than the metal film CMF1 is used. As an example of a material constituting the metal coating film CMF1, copper (Cu) can be used. Furthermore, when the metal coating film CMF1 is formed of copper, it is preferable to implement countermeasures to prevent surface oxidation of the metal coating film CMF1. Therefore, there is a case where a thin anti-oxidation film (laminated film) is formed on the surface of the metal coating film CMF1.

[0199] As described above, since the superconducting strip 11 includes a metal substrate MS1 with relatively low conductivity, the resistivity of the conductive path from the superconducting layer SC1 toward the metal substrate MS1 is greater than the resistivity of the conductive path from the superconducting layer SC1 toward the protective metal layer PML1. Therefore, as Figure 22 As shown, from the viewpoint of reducing the resistive component of the conductive path connecting the superconducting wire 11 and the superconducting wire 9, it is preferable to... Figure 24 The connection method shown in the figure is in which superconducting wire 11 and superconducting wire 9 are stacked in a manner that overlaps each other.

[0200] exist Figure 24In the example shown, through the stacking process (see...) Figure 21 The laminate 9B formed includes a connecting portion CP1 and a connecting portion CP2. At the connecting portion CP1, the superconducting layer SCL1 and the superconducting layer SCL2 are opposite each other without passing through the metal substrate MS1, the intermediate layer MDL1, the metal substrate MS2 and the intermediate layer MDL2. At the connecting portion CP2, the superconducting layer SCL1 and the superconducting layer SCL2 are opposite each other via the metal substrate MS1, the intermediate layer MDL1, the metal substrate MS2 and the intermediate layer MDL2.

[0201] according to Figure 24 The connection method shown significantly reduces the resistance of connection portion CP1 compared to connection portion CP2. This is because the metal substrate MS1, which has a relatively high resistance, is not present in connection portion CP1. When current flows through the conductive paths of both branches, most of the current flows through the conductive path with the relatively low resistance. Therefore, when a large current flows... Figure 22 When the superconducting wires 10 and 10B are shown, most of the current flows through them. Figure 24 The connection portion CP1 is shown. As a result, even when including the connection portion CP2 with a relatively high resistance value, as... Figure 22 As shown in the laminate 9B as a whole, current can also flow through the low-resistance conductive path. That is, in Figure 24 In the case of the connection method shown, since the resistance value of the main conductive path in the laminate 9B can be reduced, the heat generation in the laminate 9B can be reduced.

[0202] Next, we will discuss the issue of further reducing... Figure 22 The preferred embodiment will be explained from the perspective of the resistance value of the laminate 9B shown. For example... Figure 21 As shown, the lamination process includes an acid cleaning process, an acid removal process, and a superconducting wire lamination process.

[0203] exist Figure 21 In the acid cleaning process shown, Figure 22 Each of the plurality of superconducting wires 11 and 9 shown is acid-cleaned. (As used...) Figure 23 As explained, the superconducting wire 11 is coated with a copper-coated metallized film (CMF1). Similarly, the superconducting wire 9 is coated with a copper-coated metallized film (CMF2). Furthermore, to prevent oxidation of the copper-coated metallized film (CMF1 or CMF2), an anti-oxidation film is formed on the surface of the CMF1 (or CMF2). During the acid cleaning process, each of the superconducting wires 11 and 9 is cleaned with an acidic cleaning solution to remove the anti-oxidation film (laminated film).

[0204] Next, in Figure 21 In the acid removal process shown, acid is removed from the surface of each of the plurality of superconducting wires 11 and 9 after the acid cleaning process. This is because if the superconducting wire lamination process is performed while the acidic cleaning solution remains on the surface of the coated metal film CMF1 (or coated metal film CMF2), the oxidation of the superconducting wires 11 (or 9) may be exacerbated by the residual acid. An example of an acid removal method is wiping with dry paper or cloth.

[0205] Next, in Figure 21 In the superconducting wire lamination process shown, after the acid removal process, portions of multiple superconducting wires 11 and portions of multiple superconducting wires 9 are alternately laminated in an overlapping manner. Therefore, by acid cleaning before performing the superconducting wire lamination process... Figure 22 Each of the plurality of superconducting strips 11 and 9 shown can further improve the conductivity of the coated metal film CMF1.

[0206] However, using Figures 21 to 24 The method of connecting superconducting wires described herein is to use Figures 1 to 20 The described embodiments extract features related to the connection method of superconducting wires. Therefore, the techniques described in the "Connection Method of Superconducting Wires" section can be combined with other techniques already described. For example, in Figure 22 In the stack shown 9B, if the application uses Figure 20 The described technique yields the following connection method. That is, in Figure 21 In the layering process shown, Figure 22 A spacer 19, capable of contacting the screw SS1, is disposed between the laminate 9B shown and the bottom 23 (see reference). Figure 20 When screw SS1 is tightened, the pressing force from screw SS1 is applied to the laminate 9B via spacer member 19.

[0207] This invention is not limited to the embodiments and examples described above, and various modifications can be made within its scope without departing from its spirit. For example, as described above, the example of a protective component for linear materials is a component for protecting superconducting wires, but the structure of the protective component 100 can also be used as a protective component for other linear materials. For example, it can be used as a piping for the flow path of liquids or gases, or as a protective component for protecting wires, etc.

[0208] Furthermore, for example, specific dimensions have been described for each of the constituent components such as the superconducting wire 10 and the protective component 100, but these values ​​can be changed without departing from the spirit of the above description. Additionally, in Figure 3 and Figure 7 The example described is that four cables 30 are provided on each of the multiple modules 20 as reinforcing components. However, the number of cables 30 is not limited to four; there may be three or fewer (however, at least one must be present) or more than five.

[0209] Furthermore, for example, various modifications have been described above, but it is possible to combine a portion of the embodiments with other embodiments.

[0210] Figures 3 to 6 , Figure 10 , Figure 19 , Figure 20 and Figure 22 Module 20A and shown in the diagram Figures 12 to 16 and Figure 18 The module 20C shown in the figure can be represented as follows. That is, a module (module 20A or module 20C) in one embodiment includes a linear material holding portion having a top, a sidewall portion, and a sidewall portion formed by the top, the sidewall portion, and the sidewall portion. The module has a threaded hole in at least one of the top, the sidewall portion, and the sidewall portion.

[0211] Industrial availability This invention can be used as a protective component for linear materials in various devices such as nuclear fusion reactors, plasma generating devices, accelerators, superconducting power transmission, power storage, superconducting motors, and liquid transport piping.

[0212] Explanation of reference numerals in the attached figures 2 Cooling pipes 10, 10A, 10B Superconducting Wires (Linear Materials) Superconducting wires 9, 11, 16, 17, 18 Laminated structures 9A, 9B, 11A, 11B, 11C, 16A, 17A, 17C, 18A 12 Metal strips 13 Cooling pipes 14 Spacers 19 Metal Plates Modules 20, 20A, 20B, 20C, 20AA, 20AB, 20AC 20A1, 20A2, 20B1, 20B2, 20C1, 20C2, 20C3, Components 20GA, 20GB module group 20s1, 20s2, 20s3, 20s4 (side) 21, 21A, 21B, 21C Maintain space 22 Top 22a, 23a, 23a1, 23a2 upper surfaces 22b, 23b lower surface 23, 23A, 23B Bottom 24, 25 Side wall portions 24a, 25a inner surfaces 26, 27 Openings 28. Middle wall section Cables 30, 31, 31A, 32, 32A, 33, 33A, 34, 34A 31AT1, 31AT2, 31T, 31T1, 31T2, 32AT, 32T, 32T1, 32T2, 33AT, 33T, 34AT, 34T slots 40 Lead section 41 Support section 41a Upper surface 41H Through Hole 42 cover 42b lower surface 42H Through Hole 43 bolts 44 Nuts 100 protective components 200, 201, 202 coils BL gap BP1, BP2, BP3, BP4, BP5, BP6, BP7, BP8 Fixing parts CMF1, CMF2 coated metal films CR1, CR2 Central Region MDL1, MDL2 intermediate layers MS1, MS2 metal substrate PML1, PML2 protective metal layers SCL1 and SCL2 superconducting layers SS1, SS2 screws TH1, TH2 threaded holes TR1, TR2, TR3, TR4, TR5, TR6 Cable Retention Section

Claims

1. A linear material protection member, the linear material protection member having: a plurality of modules for holding in a manner surrounding a linear material extending in a first direction; and a first cable extending in the first direction and engaged with the plurality of modules, the linear material having a first linear material including a first stack formed of a plurality of first superconducting tape wires stacked, the plurality of modules arranged in the first direction in order, each of the plurality of modules including: a holding space holding the linear material; a top covering the holding space; a bottom located on an opposite side of the top via the holding space; a first side wall portion connected to each of the top and the bottom; and a second side wall portion connected to each of the top and the bottom and located on an opposite side of the first side wall portion via the holding space, the plurality of modules including: a first module; and a second module different in shape from the first module, the first module including: a first member constituting the top, the first side wall portion, and the second side wall portion; and a second member joined to the first member via the first cable and constituting the bottom, the first member having: a first cable holding portion formed at either one of a position where the first side wall portion and the bottom are combined and a position where the second side wall portion and the bottom are combined and capable of being engaged with the first cable; and a first fixing portion formed at the other of the position where the first side wall portion and the bottom are combined and the position where the second side wall portion and the bottom are combined and capable of fixing the second member, the second member having: a first side arranged along one of the first side wall portion and the second side wall portion; a second side arranged on an opposite side of the first side; a central region arranged between the first side and the second side; a second cable holding portion and a third cable holding portion formed along the first side in a state capable of sandwiching the first cable holding portion of the first member; a second fixing portion arranged along the second side and capable of being fixed to the first fixing portion of the first member; and a first threaded hole arranged in the central region and formed in a manner penetrating the second member in a thickness direction, the first module arranged at one end of the plurality of modules arranged in order, each of a first inner side surface of the first side wall portion and a second inner side surface of the second side wall portion of the first member provided in the first module is in a circular arc shape in a side view in the first direction, an upper surface of the bottom of the first module and a lower surface of the top of the first module are flat surfaces, a metal plate is arranged on the upper surface of the bottom, and a screw inserted into the first threaded hole is in contact with the metal plate, the linear material protection member further having: a second cable extending in the first direction and engaged with the plurality of modules, the second module including: a third member constituting the top and the first side wall portion; and a fourth member joined to the third member via the second cable and constituting the bottom. ​ ​ wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The linear material protection component of claim 1, wherein, ​ 3. The linear material protection component of claim 2, wherein, ​ ​ 4. The linear material protection component of claim 3, wherein, ​ 5. The linear material protection component of claim 2, wherein, ​ ​ ​ ​ a fourth member that constitutes the bottom and the second side wall portion, the third member has: a fifth cable holding portion and a sixth cable holding portion that are formed in a state capable of sandwiching the fourth cable holding portion of the fourth member in the first direction; and a third fixing portion capable of fixing the fourth member, the fourth member has: the fourth cable holding portion is formed in either one of a position where the first side wall portion and the top portion are combined and a position where the second side wall portion and the bottom portion are combined, and is capable of engaging with the second cable; and a fourth fixing portion is formed in the other one of the position where the first side wall portion and the top portion are combined and the position where the second side wall portion and the bottom portion are combined, and is capable of being fixed to the third fixing portion of the third member.

6. The linear material protection component of claim 5, wherein, each of a first inner side surface of the first side wall portion and a second inner side surface of the second side wall portion provided to the first member of the first module is in a circular arc shape in a side view in the first direction, an upper surface of the bottom portion of the first module is a flat surface, the holding space of the second module is in a cylindrical shape in a side view in the first direction.

7. The linear material protection component of claim 2, wherein, each of the first side wall portion and the second side wall portion provided to the first member of the first module has an opening portion that penetrates the first side wall portion or the second side wall portion in a second direction that intersects the first direction.

8. The linear material protection component of claim 2, wherein, each of the plurality of first superconducting tape wires is electrically connected to the lead portion via a plurality of second superconducting tape wires; the lead portion is disposed beside the first module; the plurality of second superconducting tape wires are sandwiched to the lead portion; the lead portion includes: a support portion that supports a second stack of the plurality of second superconducting tape wires; and a cover portion that covers the second stack, the second stack is sandwiched to the support portion and the cover portion, and extends toward the first module; the plurality of first superconducting tape wires and the plurality of second superconducting tape wires are disposed in the holding space of the first module; the plurality of first superconducting tape wires and the plurality of second superconducting tape wires are alternately stacked in the holding space of the first module; the stack of the plurality of first superconducting tape wires and the plurality of second superconducting tape wires is fixed by a screw inserted into the first threaded hole.

9. The linear material protection component of claim 8, wherein, each of the plurality of second superconducting tape wires extends in the first direction, the second member includes the first threaded hole in the central region, and has a plurality of threaded holes arranged in the first direction, the stack of the plurality of first superconducting tape wires and the plurality of second superconducting tape wires is fixed by a screw inserted into each of the plurality of threaded holes.

10. The linear material protection component of claim 2, wherein, each of the plurality of first superconducting tape wires is electrically connected to the lead portion via a plurality of second superconducting tape wires that are sandwiched to the lead portion disposed beside the first module, between the lead portion and the second module, a first one of the first modules, a second one of the first modules, and a third one of the first modules are arranged in the first direction in this order from a side closer to the lead portion, The lead portion includes: a support portion that supports a second stack of the plurality of second superconducting tape wires; and a cover portion that covers the second stack, The second stack is clamped between the support portion and the cover portion and extends toward the first module of the first one, The plurality of first superconducting tape wires and the plurality of second superconducting tape wires are disposed in the holding space of each of the first module, the second module, and the third module of the first one, The plurality of first superconducting tape wires and the plurality of second superconducting tape wires are stacked in the holding space of each of the first module, the second module, and the third module of the first one, The stack of the plurality of first superconducting tape wires and the plurality of second superconducting tape wires is fixed by a screw inserted into the first threaded hole provided in each of the first module, the second module, and the third module of the first one.

11. The linear material protection component of claim 10, wherein, In the first direction, a gap is present between the plurality of first superconducting tape wires and the plurality of second superconducting tape wires, respectively, In the stacking direction of the plurality of first superconducting tape wires and the plurality of second superconducting tape wires, the total value of the thickness of the gap is greater than half the thickness of the first stack.

12. The linear material protection component of claim 2, wherein, The linear material includes: a first stack in which the plurality of first superconducting tape wires are stacked; a cooling tube disposed beside the first stack; and a metal band wound so as to bundle the first stack and the cooling tube.

13. A linear material protection member that protects: a first linear material including a plurality of first superconducting tape wires stacked and extending in a first direction; a second linear material including a plurality of second superconducting tape wires stacked and extending in the first direction; and a plurality of third superconducting tape wires extending in a second direction intersecting the first direction and electrically connected to the plurality of first superconducting tape wires and the plurality of second superconducting tape wires, wherein the linear material protection member has: a first module group formed of a plurality of modules for holding the first linear material in an encircling manner; a second module group formed of a plurality of modules for holding the second linear material in an encircling manner; a third module for holding a portion of the plurality of first superconducting tape wires and the plurality of second superconducting tape wires electrically connected via the plurality of third superconducting tape wires in an encircling manner; a first cable extending in the first direction and engaged with the first module group and the third module; and a second cable extending in the first direction and engaged with the second module group and the third module, The third module includes: a first holding space that holds the first linear material; a second holding space that holds the second linear material; a top portion that covers the first holding space and the second holding space; a first bottom portion located on the opposite side of the top portion via the first holding space; a second bottom portion located on the opposite side of the top portion via the second holding space; a first side wall portion connected to each of the top portion and the first bottom portion; and a second side wall portion connected to each of the top portion and the second bottom portion. a second side wall portion connected to each of the top portion and the second bottom portion, and positioned on the opposite side of the first side wall portion; a middle wall portion positioned between the first side wall portion and the second side wall portion; a third holding space formed in a manner that communicates the first holding space and the second holding space, and holding the plurality of third superconducting wire materials; a first member constituting the top portion, the first side wall portion, the second side wall portion, and the middle wall portion; a second member connected to the first member via the first cable, and constituting the first bottom portion; and a third member connected to the first member via the second cable, and constituting the second bottom portion, the first member has: a first cable holding portion formed at a position where the first side wall portion and the first bottom portion are combined, and capable of engaging with the first cable; a first fixing portion formed at a position where the middle wall portion and the first bottom portion are combined, and capable of fixing the second member; and a second fixing portion formed at a position where the second side wall portion and the second bottom portion are combined, and capable of fixing the third member, the second member has: a first side disposed along the first side wall portion; a second side disposed on the opposite side of the first side; a first central region disposed between the first side and the second side in the second direction; a second cable holding portion and a third cable holding portion formed along the first side in a state capable of sandwiching the first cable holding portion of the first member; a third fixing portion disposed along the second side, capable of being fixed to the first fixing portion of the first member; a fourth cable holding portion formed at a position where the middle wall portion and the second bottom portion are combined, and capable of engaging with the second cable; and a first threaded hole disposed in the first central region, formed in a manner that penetrates the second member in the thickness direction, the third member has: a third side disposed along the second side of the second member; a fourth side disposed on the opposite side of the third side; a second central region disposed between the third side and the fourth side in the second direction; a fifth cable holding portion and a sixth cable holding portion formed along the third side in a state capable of sandwiching the second cable holding portion of the second member; a fourth fixing portion disposed along the fourth side, capable of being fixed to the second fixing portion of the first member; and a second threaded hole disposed in the second central region, formed in a manner that penetrates the third member in the thickness direction.

14. The linear material protection component of claim 13, wherein, the first linear material and the second linear material are connected via a plurality of the third modules arranged in a manner that abut each other in the first direction.

15. A superconducting wire material connecting method, the method comprising the following steps, (a) a step of preparing a first superconducting wire material having a first laminate formed of a plurality of first superconducting wire materials stacked; (b) a step of preparing a second superconducting wire material having a second laminate formed of a plurality of second superconducting wire materials stacked; (c) a process of forming a third stack by alternately stacking a part of the plurality of first superconducting tape wires and a part of the plurality of second superconducting tape wires in a manner of overlapping each other after the (a) process and the (b) process; (d) a process of preparing a first module of a protection member which is capable of being held in a manner of surrounding a periphery of the third stack; and (e) a process of fixing the third stack to a holding space of the first module by inserting a screw into a threaded hole formed in the first module and fastening after the (c) process and the (d) process, the first module includes: the holding space which is capable of holding the third stack; a top portion which covers the holding space; a bottom portion which is located on an opposite side of the top portion via the holding space; and the threaded hole which penetrates the bottom portion in a thickness direction and communicates with the holding space.

16. The method of connecting superconducting wires according to claim 15, wherein each of the plurality of first superconducting tape wires includes: a first superconducting layer which is formed of a superconducting material; a first metal substrate which supports the first superconducting layer; a first intermediate layer which is located between the first superconducting layer and the first metal substrate; a first protective metal layer which has a higher electrical conductivity than the first metal substrate and is disposed on an opposite side of the first intermediate layer via the first superconducting layer; and a first clad metal film which has a higher electrical conductivity than the first metal substrate and covers a stack of the first superconducting layer, the first metal substrate, the first intermediate layer, and the first protective metal layer, each of the plurality of second superconducting tape wires includes: a second superconducting layer which is formed of a superconducting material; a second metal substrate which supports the second superconducting layer; a second intermediate layer which is located between the second superconducting layer and the second metal substrate; a second protective metal layer which has a higher electrical conductivity than the second metal substrate and is disposed on an opposite side of the second intermediate layer via the second superconducting layer; and a second clad metal film which has a higher electrical conductivity than the second metal substrate and covers a stack of the second superconducting layer, the second metal substrate, the second intermediate layer, and the second protective metal layer, the third stack formed in the (c) process includes: a first connection portion in which the first superconducting layer and the second superconducting layer do not face each other via the first metal substrate, the first intermediate layer, the second metal substrate, and the second intermediate layer; and a second connection portion in which the first superconducting layer and the second superconducting layer face each other via the first metal substrate, the first intermediate layer, the second metal substrate, and the second intermediate layer.

17. The method of connecting superconducting wires according to claim 16, wherein the (c) process includes: (c1) an acid cleaning process of performing acid cleaning on each of the plurality of first superconducting tape wires and the plurality of second superconducting tape wires; (c2) an acid removal process of performing acid removal from a surface of each of the plurality of first superconducting tape wires and the plurality of second superconducting tape wires after the (c1) process; and (c3) a stacking process of alternately stacking a part of the plurality of first superconducting tape wires and a part of the plurality of second superconducting tape wires in a manner of overlapping each other after the (c1) process and the (c2) process. (c3) a layering step of alternately layering a part of the plurality of first superconducting tape wires and a part of the plurality of second superconducting tape wires in a manner of overlapping each other after the (c2) step.

18. The superconducting wire connecting method according to claim 15, wherein in the (c) step, a spacing member capable of contacting the screw is arranged between the third layering body and the bottom, when the screw is fastened, the third layering body is pressed by the screw via the spacing member.

19. The superconducting wire connecting method according to claim 15, wherein in the (c) step, a part of the plurality of first superconducting tape wires and a part of the plurality of second superconducting tape wires are alternately layered in a manner of overlapping each other piece by piece.

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