An accurate positioning structure of an outlet head of a three-dimensional superconducting coil of a star simulator

Abstract

The utility model provides a kind of for the outlet head accurate positioning structure of three-dimensional superconducting coil of star simulator, comprising: bending section positioning seat, be equipped with for with the bending section of all outlet head of multiple multi-pie coil one-to-one correspondence and multiple limit hole of adaptation, each limit hole is along corresponding preset curve extension, for the bending section of corresponding outlet head is passed through, to guide bending section along corresponding preset curve extension, to the positioning of bending section;Straight section positioning tool, including multiple positioning support, each positioning support includes placement part, all placement part of multiple positioning support and the straight section of all outlet head of multiple multi-pie coil one-to-one correspondence and adaptation, each placement part is used to fixed and positioned the straight section of corresponding outlet head, to make corresponding straight section along corresponding preset straight line extension.Bending section positioning seat and straight section positioning tool are matched, improve bending section forming precision and consistency, after bending section is shaped, straight section can be reliably limited, improve positioning reliability.

Description

Technical Field

[0001] This utility model belongs to the field of superconducting coil technology, and specifically relates to a precise positioning structure for the lead-out end of a three-dimensional superconducting coil for a stellarator. Background Technology

[0002] The stellarator's three-dimensional superconducting coil is composed of multiple layers of multi-panel coils, each with a lead-out end. This lead-out end is divided into a curved section and a straight section, which must be shaped and positioned according to a preset spatial trajectory. The positioning accuracy directly affects the coil assembly, welding quality, and superconducting performance. Currently, general-purpose fixtures are often used in conjunction with manual assistance for positioning, which makes it difficult to accurately match the preset curved trajectories of each lead-out end. This results in poor forming accuracy and low consistency of the curved sections, easily leading to positional deviations and causing interference in the coil structure, thus compromising the accuracy of subsequent assembly processes. Furthermore, processing the straight section before the curved section is fully formed and stable, and relying solely on simple clamping methods for straight section fixation, makes the lead-out end prone to displacement and springback deformation during processing. This not only causes internal stress in the superconducting wire, impairing its superconducting current-carrying performance, but also significantly increases rework difficulty, reduces product yield and production efficiency, and fails to meet the high-precision, high-stability processing requirements of the stellarator's three-dimensional superconducting coil. Additionally, the clamping fixation method results in insufficient reliability of positioning and limiting. Utility Model Content

[0003] The purpose of this invention is to solve the problems in the existing technology of superconducting multi-pane coil output heads of stellarators that rely on manual positioning with general-purpose clamps, resulting in poor forming accuracy, easy positional interference, easy displacement and springback of the output heads during processing, internal stress in the wires that damages the superconducting performance, insufficient clamping reliability, and difficulty in meeting the requirements of high-precision production.

[0004] To solve the above-mentioned technical problems, this utility model discloses a precise positioning structure for the lead wire of a three-dimensional superconducting coil in a stellarator. The three-dimensional superconducting coil of the stellarator includes multiple multi-panel coils stacked together. Each multi-panel coil includes two lead wires, and each lead wire extends from the outside of the corresponding multi-panel coil along a corresponding preset curve, and then extends along a corresponding preset straight line to form a curved section and a straight section. The precise positioning structure for the lead wire includes:

[0005] The bend positioning seat has multiple limiting holes, which are configured and adapted to correspond one-to-one with the bends of all the lead-out sections of the multiple multi-coil coils. Each limiting hole extends along a corresponding preset curve to allow the bend of the corresponding lead-out section to pass through, thereby guiding the bend of the lead-out section to extend along the corresponding preset curve and positioning the bend of the lead-out section. The straight section positioning fixture is located on one side of the bend positioning seat and includes multiple positioning brackets. Each positioning bracket includes a placement part, and all placement parts of the multiple positioning brackets correspond one-to-one with and are adapted to the straight sections of all the lead-out sections of the multiple multi-coil coils. Each placement part is used to fix and position the straight section of the corresponding lead-out section so that the straight section of the corresponding lead-out section extends along the corresponding preset straight line.

[0006] The above technical solution employs a combination of a bend positioning seat and a straight section positioning fixture. The bend positioning seat uses limiting holes on the bend positioning seat that match the preset curves of each lead-out bend, achieving precise matching of the lead-out bending trajectory, improving the forming accuracy and consistency of the bend, reducing positional deviations, avoiding coil structure interference, and ensuring subsequent assembly accuracy. Simultaneously, the straight section positioning fixture's placement part fixes and positions the straight sections one-to-one, reliably limiting the straight sections after the bends are shaped. This suppresses displacement and springback deformation during lead-out processing, reduces internal stress in the superconducting wire, protects superconducting current-carrying performance, and replaces the traditional positioning method of general-purpose fixtures with manual assistance. This improves positioning reliability, reduces rework, increases yield and production efficiency, and meets the high-precision, high-stability processing requirements of stellarator three-dimensional superconducting coils.

[0007] According to another specific embodiment of the present invention, the present invention discloses a precise positioning structure for the lead wire of a three-dimensional superconducting coil of a stellarator. The bending segment positioning seat includes multiple bending segment positioning plates stacked and fixedly connected to each other along a first direction. The multiple bending segment positioning plates are arranged one-to-one with the bending segments of all lead wires of the multiple multi-pane coils. A portion of the multiple limiting holes are formed in a corresponding bending segment positioning plate, and another portion of the limiting holes are formed in two adjacent bending segment positioning plates.

[0008] The above technical solution adopts a multi-layered and fixed bending segment positioning plate structure, which can be adapted to the corresponding arrangement of each wire head bending segment. Some limiting holes are set on a single bending segment positioning plate, and some are formed between two adjacent bending segment positioning plates. This can adapt to different wire head spatial shapes, which not only facilitates the processing and manufacturing of limiting holes and the installation of wire head bending segments, but also enables reliable constraint positioning of bending segments, ensuring the forming accuracy of bending trajectory. At the same time, it is conducive to segmented processing, assembly and maintenance, and reduces the overall tooling processing difficulty.

[0009] According to another specific embodiment of the present invention, the embodiment of the present invention discloses a precise positioning structure for the lead-out head of a three-dimensional superconducting coil of a stellarator, wherein each bend positioning plate includes two or three bend positioning blocks, and the bend positioning blocks of all bend positioning plates are spliced ​​together to form multiple limiting holes.

[0010] Using the above technical solution, the bend positioning plate is composed of two or three bend positioning blocks spliced ​​together. The bend positioning blocks are spliced ​​together to form a limiting hole, which facilitates the separate processing of the complex curve contour of the limiting hole and reduces the processing difficulty of individual components. At the same time, it can be disassembled and assembled separately, which facilitates the insertion and removal of the bend section of the wire end, and the assembly operation is convenient. It can also be adapted to different curve shapes of wire ends by assembling the bend positioning blocks. When a part is damaged, the corresponding bend positioning block can be replaced individually without replacing the entire tooling, reducing tooling manufacturing and maintenance costs, and ensuring the positioning and constraint effect on the bend section of the wire end.

[0011] According to another specific embodiment of the present invention, the present invention discloses a precise positioning structure for the lead wire of a three-dimensional superconducting coil of a stellarator. Each placement part includes a first positioning surface and a second positioning surface. Each positioning bracket is provided with a positioning component corresponding to its placement part. The positioning component includes a first positioning element and a second positioning element. The first positioning element and the corresponding first positioning surface are arranged opposite each other in a first direction, and the second positioning element and the corresponding second positioning surface are arranged opposite each other in a second direction. The straight segment of each lead wire is located behind the corresponding placement part, abutting between the first positioning element and the first positioning surface in the first direction, and abutting between the second positioning element and the second positioning surface in the second direction. The first direction and the second direction are perpendicular.

[0012] By adopting the above technical solution, by setting the positioning surfaces and corresponding positioning components in the first and second mutually perpendicular directions, bidirectional clamping and limiting of the straight segment of the wire head can be achieved from two orthogonal directions, constraining the displacement of the straight segment in both directions, effectively suppressing the offset and springback deformation of the wire head during processing; the bidirectional abutment positioning clamping is reliable and has high positioning accuracy, which can avoid the superconducting wire from generating additional internal stress and ensure superconducting performance; the structure is simple, and the positioning components cooperate with the placement part to realize the rapid clamping and positioning of the straight segment, improving the efficiency of assembly operations.

[0013] According to another specific embodiment of the present invention, the disclosed embodiment of the present invention provides a precise positioning structure for the lead-out end of a three-dimensional superconducting coil of a stellarator. The positioning bracket has: a first threaded through hole corresponding to a first positioning member and extending along a first direction, and a second threaded through hole corresponding to a second positioning member and extending along a second direction; the first positioning member includes a first bolt, which passes through the corresponding first threaded through hole and is threadedly connected to the first threaded through hole, for abutting against the outer wall surface of the corresponding straight segment in the first direction; the second positioning member includes a second bolt, which passes through the corresponding second threaded through hole and is threadedly connected to the second threaded through hole, for abutting against the outer wall surface of the corresponding straight segment in the second direction.

[0014] The above technical solution utilizes threaded holes and bolts for positioning. By tightening the first and second bolts, the wire tip can be pressed against the outer wall of the straight section in two mutually perpendicular directions, achieving bidirectional adjustable clamping limit. The clamping amount can be finely adjusted according to the actual size of the wire tip to adapt to different assembly conditions. The clamping force is controllable, avoiding overpressure damage to the superconducting wire. The threaded locking structure provides stable clamping, effectively preventing the wire tip from loosening or shifting during processing and ensuring the positioning accuracy of the straight section. The structure is simple and reliable, and the clamping and disassembly operations are convenient, which helps to improve assembly efficiency.

[0015] According to another specific embodiment of the present invention, the embodiment of the present invention discloses a precise positioning structure for the lead wire of a three-dimensional superconducting coil of a stellarator. The first positioning component further includes a first pad, which is fixed to one end of a first bolt. The first bolt abuts against the outer wall surface of the corresponding straight segment through the first pad. The second positioning component further includes a second pad, which is fixed to one end of a second bolt. The second bolt abuts against the outer wall surface of the corresponding straight segment through the second pad.

[0016] By adopting the above technical solution, a shim is added to the end of the bolt. The shim directly contacts the outer wall of the straight section of the wire head, which can increase the contact area, avoid the hard points of the bolt directly squeezing and damaging the surface of the superconducting wire, prevent the wire from being pressed and causing indentations and local stress concentration; it can also disperse the clamping force, making the force more uniform and protecting the performance of the superconducting wire.

[0017] According to another specific embodiment of the present invention, the embodiment of the present invention discloses a precise positioning structure for the lead wire of a three-dimensional superconducting coil for a stellarator. The two lead wires of each multi-pane coil are a first lead wire and a second lead wire, respectively. The first lead wire is located at the bottom layer of the multi-pane coil, and the second lead wire is located at the top layer of the multi-pane coil. The second lead wire of the lower multi-pane coil and the first lead wire of the upper multi-pane coil in two adjacent multi-pane coils constitute a lead wire group.

[0018] The two limiting holes corresponding to the two outlets of each outlet group are configured such that the ends of the curved sections of the second outlet and the first outlet in the outlet group are arranged side by side and spaced apart in the second direction, and are at the same height in the first direction, wherein the end of the curved section is the end of the curved section that is close to the corresponding straight section.

[0019] By adopting the above technical solution, the second lead of the lower multi-panel coil and the first lead of the upper multi-panel coil are combined to form a lead group. The two limiting holes are used to make the ends of the curved sections of the two lead groups close to the straight sections at the same height in the first direction and arranged side by side at intervals in the second direction. This reduces the positional dispersion of each lead group, improves the overall forming consistency of the lead group, facilitates the subsequent straight section tooling alignment and welding assembly operations, reduces the difficulty of assembly alignment, and ensures the coil assembly accuracy.

[0020] According to another specific embodiment of the present invention, the disclosed embodiment of the present invention provides a precise positioning structure for the lead-out ends of a three-dimensional superconducting coil in a stellarator. Multiple positioning brackets include two first positioning brackets and second positioning brackets corresponding one-to-one with the lead-out end groups. Each first positioning bracket includes a placement portion; one placement portion of the first positioning bracket is used to fix and position the straight segment of the lead-out end located at the bottom layer of the multi-pane coil, and the other placement portion of the first positioning bracket is used to fix and position the straight segment of the lead-out end located at the top layer of the multi-pane coil. The second positioning bracket includes two placement portions; in the lead-out end group, the straight segments of the first and second lead-out ends are corresponding one-to-one with the two placement portions of the second positioning bracket. The first positioning surfaces of the two placement portions of the second positioning bracket are spaced apart in a second direction and are at the same height in the first direction, so that the straight segments of the first and second lead-out ends are at the same height in the first direction.

[0021] By adopting the above technical solution, a dedicated first positioning bracket is set up to position the independent straight segments of the bottom and top layers of the coil. A second positioning bracket corresponds one-to-one with each of the lead-out sections and has two placement parts, ensuring that the two straight segments within the same lead-out section are arranged at the same height in the first direction and spaced apart in the second direction. This achieves zoned adaptation and complete coverage positioning of all straight segments of the lead-out sections. The two straight segments of the lead-out sections to be connected in the same lead-out section maintain the same height, matching the position of the curved section ends. This provides a precise positional reference for subsequent docking of the lead-out sections, effectively reducing the amount of alignment and adjustment work before welding and lowering the risk of misalignment and deviation. By relying on the same second positioning bracket to constrain the two lead-out sections, their relative positions can be stably maintained, preventing relative displacement during processing, improving the forming quality and connection reliability of the two lead-out sections to be connected, and ensuring the assembly accuracy and electrical performance of the stellarator superconducting coil.

[0022] According to another specific embodiment of the present invention, the embodiment of the present invention discloses a precise positioning structure for the lead-out head of a three-dimensional superconducting coil for a stellarator, wherein multiple multi-pane coils are fixed on a winding fixture, a bend positioning seat is fixed on the winding fixture, and a straight section positioning fixture is fixed on the winding fixture.

[0023] Using the above technical solution, the curved section positioning seat, the straight section positioning fixture, and the multi-coil are fixed together on the winding fixture to form a unified positioning reference, eliminate the cumulative assembly error between components, prevent the fixture from shifting relative to the coil, improve the positioning accuracy of the lead wire, simplify the assembly and adjustment, and ensure the subsequent welding quality.

[0024] According to another specific embodiment of the present invention, the embodiment of the present invention discloses a precise positioning structure for the lead-out end of a three-dimensional superconducting coil for a stellarator. The precise positioning structure for the lead-out end further includes a fixing seat, which is used to fix the coil to the winding fixture. Each positioning bracket of the straight section positioning fixture is fixed on the fixing seat so as to fix the coil to the winding fixture through the fixing seat.

[0025] By adopting the above technical solution, all positioning brackets are integrated by fixing the base and then installed onto the winding fixture, which facilitates the overall disassembly and adjustment of the straight section positioning fixture; it can unify the installation benchmark of each positioning bracket, reduce the cumulative error caused by the separate installation of individual brackets, and facilitate maintenance and replacement, thereby improving the installation accuracy and assembly efficiency of the straight section positioning fixture. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the precise positioning structure for the lead end of the stellarator three-dimensional superconducting coil, the stellarator three-dimensional superconducting coil, and the winding fixture, according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the precise positioning structure for the lead wire of the stellarator's three-dimensional superconducting coil and the structure of the stellarator's three-dimensional superconducting coil, according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the first positioning bracket of the precise positioning structure for the lead wire of the three-dimensional superconducting coil of the stellarator, according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the second positioning bracket for the precise positioning structure of the lead wire of the three-dimensional superconducting coil of a stellarator, according to an embodiment of the present invention.

[0030] Figure 5This is a schematic diagram of the structure of the first to sixth bend positioning plates, the first to sixth multi-coil coils, the wire ends of the first to sixth multi-coil coils, two first positioning brackets, and two second positioning brackets of the bend positioning seat for the precise positioning structure of the wire end of the three-dimensional superconducting coil of the stellarator in an embodiment of this utility model.

[0031] Figure 6 This is a schematic diagram of the wire exit area of ​​the winding fixture according to an embodiment of the present utility model.

[0032] Figure 7 This is a schematic diagram of the fixing base for the precise positioning structure of the lead wire of the three-dimensional superconducting coil of the stellarator, according to an embodiment of the present invention.

[0033] Figure 8 This is a schematic diagram of the structure of the first bend positioning plate and the two leads of the first multi-pane coil in the bend positioning seat of the precise positioning structure for the lead-out ends of the three-dimensional superconducting coil of the stellarator, according to an embodiment of the present invention.

[0034] Figure 9 This is a schematic diagram of the lead-out structure of the first bend positioning plate, the second bend positioning plate, the first multi-coil, and the second multi-coil of the bend positioning seat for the precise positioning structure of the lead-out of the three-dimensional superconducting coil of the stellarator, according to an embodiment of the present invention.

[0035] Figure 10 This is a schematic diagram of the structure of the first to third bend positioning plates and the first to third multi-coil coils of the bend positioning seat for the precise positioning structure of the lead wire of the three-dimensional superconducting coil of the stellarator in an embodiment of the present invention.

[0036] Figure 11 This is a schematic diagram of the structure of the first to fourth bend positioning plates and the first to fourth multi-coil coils of the bend positioning seat for the precise positioning structure of the lead wire of the three-dimensional superconducting coil of the stellarator in an embodiment of the present invention.

[0037] Figure 12 This is a schematic diagram of the structure of the first to fifth bend positioning plates and the first to fifth multi-coil coils of the bend positioning seat for the precise positioning structure of the lead wire of the three-dimensional superconducting coil of the stellarator in an embodiment of the present invention.

[0038] Figure 13 This is a schematic diagram of the structure of the first to sixth bend positioning plates and the first to sixth multi-coil coils of the bend positioning seat for the precise positioning structure of the lead wire of the three-dimensional superconducting coil of the stellarator in an embodiment of this utility model.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Stellarator three-dimensional superconducting coil; 10. Multi-pane coil; 101. First double-pane coil; 1011. First lead-out end; 1012. First and second lead-out ends; 102. Second double-pane coil; 1021. Second lead-out end; 1022. Second and second lead-out ends; 103. Third double-pane coil; 1031. Third lead-out end; 1032. Third and second lead-out ends; 100. Lead-out end; 110. First lead-out end; 120. Second lead-out end; 130. Lead-out end group; 1001 1. Bending section; 1002. Straight section; 2. Precise positioning structure for the wire outlet; 21. Bending section positioning seat; 210. Bending section positioning plate; 2100. First bending section positioning plate; 2101. Second bending section positioning plate; 2102. Third bending section positioning plate; 2103. Fourth bending section positioning plate; 2104. Fifth bending section positioning plate; 2105. Sixth bending section positioning plate; 211. Bending section positioning block; 2110. First bending section positioning block; 2111. Second bending section positioning block; 2112. Third bending section positioning block; Section positioning block; 2113, fourth bend section positioning block; 2114, fifth bend section positioning block; 2115, sixth bend section positioning block; 2116, seventh bend section positioning block; 2117, eighth bend section positioning block; 2118, ninth bend section positioning block; 2119, tenth bend section positioning block; 21110, eleventh bend section positioning block; 21111, twelfth bend section positioning block; 21112, thirteenth bend section positioning block; 21113, fourteenth bend section positioning block; 212, limiting hole; 22. 220. Straight section positioning fixture; 221. Positioning bracket; 222. First positioning bracket; 222. Second positioning bracket; 2201. Placement part; 22010. First positioning surface; 22011. Second positioning surface; 2202. First positioning component; 22020. First bolt; 22021. First pad; 2203. Second positioning component; 22030. Second bolt; 22031. Second pad; 23. Fixed seat; 230. Support part; 231. Connecting part; 3. Winding fixture. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0042] First, the structure of the three-dimensional superconducting coil of the stellarator will be explained.

[0043] like Figure 1 and Figure 2 As shown, the stellarator three-dimensional superconducting coil 1 includes multiple multi-pane coils 10 stacked together. Each multi-pane coil 10 includes two lead ends 100. Each lead end 100 extends from the outside of the corresponding multi-pane coil 10 along a corresponding preset curve and then extends along a corresponding preset straight line to form a curved section 1001 and a straight section 1002.

[0044] It should be noted that each multi-pane coil 10 can be a double-pane coil, a triple-pane coil, or more pane coils, that is, the coils have two, three, or more layers respectively. In one specific embodiment, such as... Figure 1 and Figure 2 As shown, the multi-pane coil 10 is a double-pane coil. Each multi-pane coil 10 is wound with superconducting wire on a winding fixture, and the two lead ends 100 are functionally the lead end for the incoming wire and the lead end for the outgoing wire formed during winding, respectively. Multiple multi-pane coils 10 are sequentially stacked and wound on the winding fixture, and the lead end of the previous multi-pane coil 10 needs to be welded to the lead end of the next multi-pane coil 10 to form the stellarator three-dimensional superconducting coil 1. The preset curves corresponding to the bending sections 1001 of each lead end 100 are different, and the preset straight lines corresponding to the straight sections 1002 are parallel to each other, for example, the preset straight lines are parallel to a third direction (the X direction in the figure).

[0045] The present invention provides a precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator, such as... Figure 1 and Figure 2 As shown, the precise positioning structure 2 for the wire outlet includes a bend positioning seat 21 and a straight section positioning fixture 22. The bend positioning seat 21 is provided with multiple limiting holes 212, which are correspondingly and adapted to the bends 1001 of all the wire outlets 100 of the multiple multi-coil coils 10. Each limiting hole 212 extends along a corresponding preset curve, allowing the bend 1001 of the corresponding wire outlet 100 to pass through, thereby guiding the bend 1001 of the wire outlet 100 to extend along the corresponding preset curve and positioning the bend 1001 of the wire outlet 100.

[0046] It should be noted that each limiting hole 212 in this embodiment can be a blind hole or a through hole. The number of multiple limiting holes 212 is consistent with, corresponds to and fits one-to-one with, all the output heads 100 in the stellarator three-dimensional superconducting coil 1. The bend positioning seat 21 can be an integral bend positioning structure or it can include multiple stacked bend positioning layer structures, as long as multiple limiting holes 212 extending along the corresponding preset curve can be opened on the bend positioning seat 21. This embodiment does not impose specific restrictions on this.

[0047] In one embodiment of this utility model, such as Figure 1 and Figure 2As shown, the bend positioning base 21 includes a plurality of bend positioning plates 210 stacked and fixedly connected to each other along a first direction (Z direction in the figure). The plurality of bend positioning plates 210 are arranged one-to-one with the bends 1001 of all the wire ends 100 of the plurality of multi-panel coils 10. A portion of the limiting holes 212 are formed in a corresponding bend positioning plate 210, and another portion of the limiting holes 212 are formed in two adjacent bend positioning plates 210.

[0048] It should be noted that the fixed connection of multiple bend positioning plates 210 includes, but is not limited to, threaded connections, snap-fit ​​connections, etc. One bend positioning plate 210 is correspondingly set to one bend segment 1001 of the cable outlet 100. The first direction is perpendicular to the preset straight line, that is, perpendicular to the third direction.

[0049] Specifically, the bending segment positioning seat 21 includes a multi-layered and fixed bending segment positioning plate structure, which is adapted to the arrangement of the bending segments 1001 of each wire head 100. Some limiting holes 212 are set on a single bending segment positioning plate 210 and some are formed between two adjacent bending segment positioning plates 210. It can adapt to the spatial shape of different wire heads 100, which is convenient for the processing and manufacturing of the limiting holes 212, and convenient for the installation and insertion of the bending segments 1001 of the wire head 100. It can also reliably constrain and position the bending segments 1001, ensuring the forming accuracy of the bending trajectory. At the same time, it is conducive to segmented processing, assembly and maintenance, and reduces the overall tooling processing difficulty.

[0050] In one embodiment of this utility model, such as Figure 1 As shown, each bend positioning plate 210 includes two or three bend positioning blocks 211. After the bend positioning blocks 211 of all the bend positioning plates 210 of the bend positioning seat 21 are spliced ​​together, multiple limiting holes 212 are formed.

[0051] It should be noted that each bend positioning block 211 has an edge extending along a corresponding preset curve, formed in a corresponding bend positioning plate 210. Specifically, each limiting hole 212 is located between the extended edges of two adjacent bend positioning blocks 211 of a bend positioning plate 210; and each limiting hole 212 is located between the extended edges of multiple adjacent bend positioning blocks 211 in the two adjacent bend positioning plates 210. The bent section 1001 of the lead wire 100 is tightly wound along the edge of a corresponding bend positioning block 211, and can pass through the corresponding limiting hole 212, thereby extending along the corresponding preset curve. Each bend positioning plate 210 may include two or three bend positioning blocks 211; the specific number is determined according to the actual installation situation, as long as it can guide the bent section 1001 of each lead wire 100 to be tightly wound along the edge of a corresponding bend positioning block 211.

[0052] Specifically, the bend positioning plate 210 is composed of two or three bend positioning blocks 211 spliced ​​together. The bend positioning blocks 211 are spliced ​​together to form a limiting hole 212, which facilitates the separate processing of the complex curved edge of the limiting hole 212 and reduces the processing difficulty of individual components. At the same time, it can realize separate assembly and disassembly, which facilitates the insertion and removal of the bend section 1001 of the wire head 100, and the assembly operation is convenient. It can also be matched with the curve shape of the bend section 1001 of different wire heads 100 by the bend positioning blocks 211. When a part is damaged, the corresponding bend positioning block 211 can be replaced individually without replacing the entire tooling, reducing the tooling manufacturing cost and maintenance cost, and ensuring the positioning constraint effect of the bend section 1001 of the wire head 100.

[0053] In one embodiment of this utility model, such as Figure 2 As shown, the two exit ends 100 of each multi-coil coil 10 are the first exit end 110 and the second exit end 120, respectively. The first exit end 110 is located at the bottom layer of the corresponding multi-coil coil 10, and the second exit end 120 is located at the top layer of the corresponding multi-coil coil 10. It should be noted that, generally, the coils of each layer of the multi-coil coil 10 are wound from bottom to top on the winding fixture. The first exit end 110 is located at the bottom layer of the multi-coil coil 10 and is also called the wire inlet, while the second exit end 120 is located at the top layer of the multi-coil coil 10 and is called the wire outlet. The second exit end 120 of the lower layer multi-coil coil 10 and the first exit end 110 of the upper layer multi-coil coil 10 in two adjacent multi-coil coils 10 constitute the exit end group 130. Two limiting holes 212 corresponding to the two outlets (second outlet 120 and first outlet 110) of each outlet group 130 are configured such that the ends of the bent sections 1001 of the second outlet 120 and the first outlet 110 are arranged side-by-side and spaced apart in the second direction (Y direction in the figure), and at the same height in the first direction. The end of the bent section 1001 is the end of the bent section 1001 closest to the corresponding straight section 1002. Both the first and second directions are perpendicular to the third direction, and the first direction is perpendicular to the second direction. That is, the inlet wire of the first multi-pane coil 10 and the outlet wire of the second multi-pane coil 10 in two adjacent multi-pane coils 10 constitute the outlet group 130, and the ends of the bent sections 1001 of the two wires are at the same height in the first direction.

[0054] It should be noted that the second lead 120 of the lower multi-coil coil 10 and the first lead 110 of the upper multi-coil coil 10 are combined to form a lead 130. The two limiting holes 212 are used to make the ends of the curved sections 1001 of the lead 100 in the lead 130 close to the straight sections 1002 at the same height in the first direction and arranged side by side at intervals in the second direction. This reduces the positional dispersion of the lead 100 in each lead 130, improves the overall consistency of the lead 100, and facilitates the subsequent tooling alignment and welding assembly of the straight sections 1002 of the two lead 100 in the same lead 130. This reduces the difficulty of assembly alignment and ensures the coil assembly accuracy.

[0055] like Figure 1 and Figure 2 As shown, the straight section positioning fixture 22 is located on one side of the curved section positioning seat 21 and includes multiple positioning brackets 220. Each positioning bracket 220 includes a placement part 2201. All placement parts 2201 of the multiple positioning brackets 220 correspond one-to-one with and are adapted to the straight sections 1002 of all the wire ends 100 of the multiple multi-panel coils 10. Each placement part 2201 is used to fix and position the straight section 1002 of the corresponding wire end 100 so that the straight section 1002 of the corresponding wire end 100 extends along the corresponding preset straight line.

[0056] It should be noted that each positioning bracket 220 may include one placement part 2201 to fix and position the straight segment 1002 of one cable outlet 100, or it may include two placement parts 2201 to fix and position the straight segment 1002 of two cable outlets 100, or it may include more than one placement part 2201 to fix and position the straight segment 1002 of multiple cable outlets 100. In one specific embodiment, such as Figure 3 and Figure 4 As shown, the positioning bracket 220 is shaped like a "Z" and has a placement cavity with openings at both ends at the top. The placement part 2201 is formed in the placement cavity.

[0057] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, each placement part 2201 includes a first positioning surface 22010 and a second positioning surface 22011; each positioning bracket 220 is provided with a positioning component corresponding to its placement part 2201. The positioning component includes a first positioning element 2202 and a second positioning element 2203. The first positioning element 2202 is arranged opposite to the corresponding first positioning surface 22010 in a first direction, and the second positioning element 2203 is arranged opposite to the corresponding second positioning surface 22011 in a second direction. In use, the straight segment 1002 of each wire head 100 (e.g., Figure 1 and Figure 2(As shown) After being located in the corresponding placement part 2201, it abuts between the first positioning member 2202 and the first positioning surface 22010 in the first direction, and abuts between the second positioning member 2203 and the second positioning surface 22011 in the second direction.

[0058] It should be noted that if the positioning bracket 220 includes multiple placement parts 2201, the corresponding multiple placement parts 2201 also include multiple first positioning surfaces 22010 and multiple second positioning surfaces 22011. The first positioning element 2202 and the second positioning element 2203 can be bolts or screws, or other structures that can abut against the outer wall surface of the straight segment 1002 of each wire outlet 100.

[0059] Specifically, by setting relatively positioned positioning surfaces and corresponding positioning components in mutually perpendicular first and second directions, bidirectional clamping and limiting of the straight segment 1002 of the wire head 100 can be achieved from two orthogonal directions, constraining the displacement of the straight segment 1002 in both directions, effectively suppressing the wire head from shifting or springing deformation during processing; the bidirectional abutment positioning clamping is reliable and has high positioning accuracy, which can avoid the superconducting wire from generating additional internal stress and ensure superconducting performance; the structure is simple, and the positioning component cooperates with the placement part 2201 to achieve rapid clamping and positioning of the straight segment 1002, improving assembly efficiency.

[0060] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the positioning bracket 220 has: a first threaded through hole (not shown in the figure) corresponding to the first positioning member 2202 and extending along a first direction, and a second threaded through hole (not shown in the figure) corresponding to the second positioning member 2203 and extending along a second direction; the first positioning member 2202 includes a first bolt 22020, which passes through the corresponding first threaded through hole and is threadedly connected to the first threaded through hole, for use in the first direction with the corresponding straight segment 1002 (e.g., Figure 1 and Figure 2 The outer wall surface of the (as shown) abuts; the second positioning member 2203 includes a second bolt 22030, the second bolt 22030 passing through the corresponding second threaded through hole and threadedly connected to the second threaded through hole, for use in the second direction with the corresponding straight segment 1002 (as shown) Figure 1 and Figure 2 (as shown) The outer wall surface abuts.

[0061] Specifically, the positioning function is achieved by using threaded holes and bolts. By tightening the first bolt 22020 and the second bolt 22030, the straight segment 1002 of the wire outlet 100 can be pressed against the outer wall surface in two mutually perpendicular directions, achieving bidirectional adjustable clamping limit. The clamping amount can be finely adjusted according to the actual size of the wire outlet 100 to adapt to different assembly conditions. The clamping force is controllable, avoiding overpressure damage to the superconducting wire. The threaded locking structure provides a stable clamping, effectively preventing the wire outlet 100 from loosening or shifting during processing, and ensuring the positioning accuracy of the straight segment 1002. The structure is simple and reliable, and the clamping and disassembly operations are convenient, which helps to improve assembly efficiency.

[0062] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the first positioning component 2202 also includes a first pad 22021, which is fixed to one end of the first bolt 22020. The first bolt 22020 is connected to the corresponding straight segment 1002 (e.g., ...) through the first pad 22021. Figure 1 and Figure 2 The second positioning element 2203 also includes a second pad 22031, which is fixed to one end of the second bolt 22030. The second bolt 22030 is connected to the corresponding straight segment 1002 (as shown in the figure) through the second pad 22031. Figure 1 and Figure 2 (as shown) The outer wall surface abuts.

[0063] It should be noted that the first pad 22021 is detachably fixed to the first bolt 22020, and the end face area of ​​the first pad 22021 is larger than that of the first bolt 22020. Similarly, the second pad 22031 is detachably fixed to the second bolt 22030, and the end face area of ​​the second pad 22031 is larger than that of the second bolt 22030. This increases the stress-bearing area, disperses pressure, and prevents damage to the lead wire. The first pad 22021 and the second pad 22031 can be made of materials with insulation and rigidity, such as composite materials made of glass fiber and epoxy resin (G10 for short), alumina, etc. On the one hand, the insulation of the material is used to achieve electrical isolation, preventing direct conductivity between the metal bolt and the straight segment 1002 of the lead wire 100, thus meeting insulation safety requirements. On the other hand, the rigidity of the material provides stable support, protecting the contact surface from wear and deformation.

[0064] Specifically, a shim is added to the end of the bolt. The shim directly contacts the outer wall of the straight section 1002 of the lead wire 100, which can increase the contact area, prevent the bolt hard points from directly squeezing and damaging the surface of the superconducting wire, prevent the wire from being pressed and causing indentations and local stress concentration; it can also disperse the clamping force, making the force more uniform and protecting the performance of the superconducting wire.

[0065] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the multiple positioning brackets 220 include two first positioning brackets 221 and second positioning brackets 222 that are configured one-to-one with the cable outlet assembly 130; as Figure 3 As shown, each first positioning bracket 221 includes a placement portion 2201. (As indicated...) Figure 2 As shown, the placement portion 2201 of one of the first positioning brackets 221 is used to fix and position the straight segment 1002 of the bottommost lead-out end 100 of the multi-pane coil 10, and the placement portion 2201 of the other first positioning bracket 221 is used to fix and position the straight segment 1002 of the topmost lead-out end 100 of the multi-pane coil 10; as Figure 3 As shown, each second positioning bracket 222 includes two placement portions 2201, such as... Figure 5 As shown, in the lead-out assembly 130, the straight segment 1002 of the first lead-out 110 and the straight segment 1002 of the second lead-out 120 are respectively arranged to correspond one-to-one with the two placement portions 2201 of the second positioning bracket 222; as shown Figure 4 As shown, the first positioning surface 22010 of the two placement portions 2201 of the second positioning bracket 222 is in the second direction ( Figure 4 The interval is set in the Y direction, and in the first direction ( Figure 4 In the Z direction, the straight segment 1002 of the first lead 110 and the straight segment 1002 of the second lead 120 are at the same height, so that in the first direction ( Figure 1 The Z direction in the middle) are at the same height (e.g. Figure 5 (As shown).

[0066] It should be noted that the bottommost output head 100 of the multiple multi-pane coils 10 belongs to the input head of the entire stellarator three-dimensional superconducting coil 1, and the topmost output head 100 of the multiple multi-pane coils 10 belongs to the output head of the entire stellarator three-dimensional superconducting coil 1. Neither of the above two output heads 100 needs to be connected to other output heads 100. Therefore, the straight segment 1002 can be fixed and positioned by the first positioning bracket 221 with a placement part 2201. In the lead assembly 130, the straight segments 1002 of the first lead 110 and the second lead 120 need to be connected later. Therefore, they can be fixed and positioned by a second positioning bracket 222 with two placement parts 2201. The first positioning surfaces 22010 of the two placement parts 2201 of the second positioning bracket 222 are spaced apart in the second direction and are at the same height in the first direction, so that the straight segments 1002 of the first lead 110 and the second lead 120 are at the same height in the first direction, which facilitates the subsequent connection of the two lead ends.

[0067] Specifically, a dedicated first positioning bracket 221 is set up to position the straight segments 1002 of the independent output heads 100 of the bottom and top layers of the stellarator three-dimensional superconducting coil 1 respectively. The second positioning bracket 222 corresponds one-to-one with the output head group 130 and is provided with two placement parts 2201, so that the two straight segments 1002 in the same output head group 130 are kept at the same height in the first direction and spaced apart in the second direction, which can realize the partition adaptation and complete coverage positioning of the straight segments 1002 of all output heads 100. The straight sections 1002 of the two leads to be connected in the same lead assembly 130 have the same height and match the position of the end of the curved section 1001. This provides a precise positional reference for the subsequent docking connection of the lead assembly 130, effectively reducing the amount of alignment and adjustment work before welding and reducing the risk of misalignment and misalignment of the joints. By relying on the same second positioning bracket 222 to constrain the two leads, their relative positions can be stably maintained, avoiding relative offset during processing, improving the forming quality and connection reliability of the docked leads, and ensuring the assembly accuracy and electrical performance of the stellarator superconducting coil.

[0068] In one embodiment of this utility model, such as Figure 1 As shown, multiple multi-coil coils 10 are fixed on the winding fixture 3, the bend section positioning seat 21 is fixed on the winding fixture 3, and the straight section positioning fixture 22 is fixed on the winding fixture 3.

[0069] It should be noted that the winding fixture 3 is a commonly used fixture in this field, and its structure will not be described in detail. The structure of the lead-out area of ​​the winding fixture 3 is as follows: Figure 6As shown, the bend positioning seat 21 is fixed to the lead-out area of ​​the winding fixture 3. The straight section positioning fixture 22 can be directly fixed to the winding fixture 3, or it can be fixedly connected to the winding fixture 3 through a connector. The fixed connection methods include, but are not limited to, threaded connection, snap-fit, etc.

[0070] Specifically, the curved section positioning seat 21, the straight section positioning fixture 22, and the multi-coil coil 10 are fixed together on the winding fixture 3 to form a unified positioning reference, eliminate the cumulative assembly error between components, prevent the fixture from shifting relative to the coil, improve the positioning accuracy of the wire end, simplify the assembly and adjustment, and ensure the subsequent welding quality.

[0071] In one embodiment of this utility model, such as Figure 1 and Figure 7 As shown, the lead wire precise positioning structure 2 also includes a fixed seat 23, which is used to fix the winding fixture 3. Each positioning bracket 220 of the straight section positioning fixture 22 is fixed on the fixed seat 23 so as to fix it to the winding fixture 3 through the fixed seat 23.

[0072] It should be noted that the fixed base 23 is detachably and fixedly connected to the winding tooling 3, and each positioning bracket 220 is detachably and fixedly connected to the fixed base 23. In one specific embodiment, such as Figure 7 As shown, the fixing base 23 includes a support portion 230 and a connecting portion 231 that are perpendicular to and connected to each other. The support portion 230 is flat and parallel to the second direction. Figure 7 (in the Y direction) and third direction ( Figure 7 The plane containing the X direction (in the first direction), the connecting part 231 is flat and parallel to the first direction (in the first direction). Figure 7 The plane containing the Z direction and the second direction; the connecting part 231 is fixedly connected to the winding tool 3 (such as...). Figure 1 As shown), each positioning bracket 220 (e.g.) Figure 1 (As shown) It is fixed on the support 230.

[0073] Specifically, all positioning brackets 220 are integrated by fixing base 23 and then installed onto winding fixture 3, which facilitates the overall disassembly and adjustment of straight section positioning fixture 22; it can unify the installation benchmark of each positioning bracket 220, reduce the cumulative error caused by the separate installation of individual positioning brackets 220, and facilitate maintenance and replacement, thereby improving the installation accuracy and assembly efficiency of straight section positioning fixture 22.

[0074] The present invention provides a precise positioning structure for the lead wire of a three-dimensional superconducting coil of a stellarator. The structure uses a curved section positioning seat 21 and a straight section positioning fixture 22 to cooperate. The curved section 1001 is guided and positioned by the limiting hole 212 on the curved section positioning seat 21 that matches the preset curve of the curved section 1001 of each lead wire 100. This accurately matches the bending trajectory of the curved section 1001 of the lead wire 100, improves the forming accuracy and consistency of the curved section 1001, reduces positional deviation, avoids interference with the coil structure, and ensures the accuracy of subsequent assembly. Simultaneously, the placement part 2201 of the straight section positioning fixture 22 is used to fix and position the straight section 1002 one by one. After the curved section 1001 is shaped, the straight section 1002 can be reliably limited, suppressing displacement and springback deformation during the processing of the wire head 100, reducing the internal stress of the superconducting wire, protecting the superconducting current carrying capacity, replacing the positioning method of general fixtures and manual assistance, improving the reliability of positioning and limiting, reducing rework, increasing the yield and production efficiency, and meeting the high precision and high stability processing and production requirements of the stellarator three-dimensional superconducting coil.

[0075] In one specific embodiment, the stellarator three-dimensional superconducting coil 1 includes three stacked double-pane coils, namely a first double-pane coil 101, a second double-pane coil 102, and a third double-pane coil 103. The bend positioning base 21 includes six bend positioning plates 210 stacked along a first direction and fixedly connected to each other, namely a first bend positioning plate 2100 to a sixth bend positioning plate 2105. Multiple positioning supports 220 include two first positioning supports 221 and two second positioning supports 222. Based on this positioning method for the precise positioning structure of the stellarator three-dimensional superconducting coil's output head, such as... Figure 5 , Figures 8-13 As shown, it includes the following steps:

[0076] S1: Fixing and positioning the bent sections of the two leads of the first double-coil coil: as follows Figure 8 As shown, the first bending segment positioning plate 2100 includes two bending segment positioning blocks, namely the first bending segment positioning block 2110 and the second bending segment positioning block 2111. Before winding begins, the first bending segment positioning block 2110 is first fixed on the winding fixture 3, and then the bending segment 1001 of the first lead end 110 of the first double-panel coil 101 is extended along the edge of the corresponding preset curve of the first bending segment positioning block 2110. Figure 8 The lower left edge of the first bend positioning block 2110 is tightly wound, and finally the second bend positioning block 2111 is fixed on the winding fixture 3, thus completing the fixing of the bend section 1001 of the first lead 110 of the first double-panel coil 101. Then, the winding of the main body of the first double-panel coil 101 begins. Figure 9As shown, the second bending segment positioning plate 2101 includes two bending segment positioning blocks, namely the third bending segment positioning block 2112 and the fourth bending segment positioning block 2113. Before approaching the bending segment 1001 of the second lead-out end 120 of the first double-panel coil 101, the third bending segment positioning block 2112 is first fixed on the first bending segment positioning plate 2100, and then the bending segment 1001 of the second lead-out end 120 is positioned along the edge of the third bending segment positioning block 2112. Figure 9 The upper left edge of the third bend positioning block 2112 is tightly wound, and finally the fourth bend positioning block 2113 is fixed on the first bend positioning plate 2100, thus completing the fixing of the bend section 1001 of the second lead 120 of the first double-panel coil 101.

[0077] S2: Fixing and positioning of the bent sections of the two leads of the second double-coil: After the first double-coil 101 is wound, the winding of the second double-coil 102 begins. For example... Figure 10 As shown, the third bend positioning plate 2102 includes three bend positioning blocks, namely the fifth bend positioning block 2114, the sixth bend positioning block 2115, and the seventh bend positioning block 2116. Before winding begins, the fifth bend positioning block 2114 is first fixed on the second bend positioning plate 2101, and then the edge of the fifth bend positioning block 2114 of the first lead end 110 of the second double-panel coil 102 is ( Figure 10 The lower left edge of the fifth bend positioning block 2114 is then pressed tightly against the bend to complete the positioning. Afterwards, the winding of the main body of the second double-coil 102 begins. (As shown...) Figure 11 As shown, the fourth bend positioning plate 2103 includes three bend positioning blocks, namely the eighth bend positioning block 2117, the ninth bend positioning block 2118, and the tenth bend positioning block 2119. Before approaching the bend section 1001 of the second lead end 120 of the second double-panel coil 102, the sixth bend positioning block 2115 of the third bend positioning plate 2102 (as shown) Figure 10 As shown, the second bend positioning plate 2101 is fixed to the second bend positioning plate 2103, and the eighth bend positioning block 2117 of the fourth bend positioning plate 2103 is fixed to the third bend positioning plate 2102. Then, the bend 1001 of the second lead 120 of the second double coil 102 is placed along the edge of the eighth bend positioning block 2117. Figure 11 The upper left edge of the eighth bend positioning block 2117 is pressed against the bend positioning block to complete the bend positioning. Finally, the seventh bend positioning block 2116 of the third bend positioning plate 2102 is fixed on the second bend positioning plate 2101, and the ninth bend positioning block 2118 and the tenth bend positioning block 2119 of the fourth bend positioning plate 2103 are fixed on the third bend positioning plate 2102, thereby completing the fixing of the bend section 1001 of the second lead 120 of the second double-panel coil 102.

[0078] S3: Fixing and positioning the bent sections of the two leads of the third double-coil: After the second double-coil 102 is wound, the winding of the third double-coil 103 begins. (Example: ...) Figure 12 As shown, the fifth bend positioning plate 2104 includes two bend positioning blocks, namely the eleventh bend positioning block 21110 and the twelfth bend positioning block 21111. Before winding begins, the eleventh bend positioning block 21110 is first fixed on the fourth bend positioning plate 2103, and then the bend section 1001 of the first lead 110 of the third double-coil coil 103 is positioned along the edge of the eleventh bend positioning block 21110. Figure 12 The lower left edge of the eleventh bend positioning block 21110 is then pressed tightly against the bend positioning block to complete the bend positioning. Finally, the twelfth bend positioning block 21111 is fixed onto the fourth bend positioning plate 2103, thus completing the fixing of the bend section 1001 of the first lead 110 of the third double-panel coil 103. Afterwards, the winding of the main body of the third double-panel coil 103 begins. Figure 5 As shown, the sixth bend positioning plate 2105 includes two bend positioning blocks, namely the thirteenth bend positioning block 21112 and the fourteenth bend positioning block 21113. Before approaching the bend section 1001 of the second lead-out end 120 (i.e., the third lead-out end 1032) of the third double-panel coil 103, the thirteenth bend positioning block 21112 is first fixed on the fifth bend positioning plate 2104, and then the bend section 1001 of the second lead-out end 120 (i.e., the third lead-out end 1032) of the third double-panel coil 103 is positioned along the edge of the thirteenth bend positioning block 21112 (i.e., the edge of the thirteenth bend positioning block 21112). Figure 13 The upper left edge of the 13th bend positioning block 21112 is pressed tightly to complete the bend positioning. Finally, the 14th bend positioning block 21113 is fixed on the 5th bend positioning plate 2104 to complete the fixing of the bend section 1001 of the second lead 120 of the third double-panel coil 103.

[0079] At this point, the precise positioning of the bent sections of all the leads of the stellarator's three-dimensional superconducting coil has been completed.

[0080] S4: Next, fix and position the straight segment of the lead wire: such as Figure 5 As shown, firstly, the fixing base 23 is fixedly connected to the winding fixture 3, and then the two first positioning brackets 221 and two second positioning brackets 222 of the straight section positioning fixture 22 are fixed to the fixing base 23; further, the first double-panel coil 101 ( Figure 5The straight segment 1002 of the first lead-out head 110 (also called the first lead-out head 1011) and the straight segment 1002 of the second lead-out head 120 (also called the third lead-out head 1032) of the third double coil 103 are respectively placed into the placement part 2201 of a first positioning bracket 221. Then, the straight segment 1002 of the second lead-out head 120 (also called the first lead-out head 1012) of the first double coil 101 and the straight segment 1002 of the first lead-out head 110 (also called the second lead-out head 1021) of the second double coil 102 are respectively placed into the two placement parts 2201 of a second positioning bracket 222. Figure 5 (Not shown in the image), the straight segment 1002 of the second lead-out end 120 (also called the second lead-out end 1022) of the second double coil 102 and the straight segment 1002 of the first lead-out end 110 (also called the third lead-out end 1031) of the third double coil 103 are placed into the two placement portions 2201 of another second positioning bracket 222. Figure 5 (not shown in the image). Then, by adjusting the first positioning element 2202 and the second positioning element 2203 of each first positioning bracket 221 and second positioning bracket 222, the spatial position of the straight segment 1002 of each lead wire is finely adjusted in three dimensions. After the position of the straight segment 1002 of all lead wires is adjusted to the correct position, the first positioning element 2202 and the second positioning element 2203 are locked one by one to complete the clamping and fixing. Thus, the precise positioning operation of the straight segment 1002 of all lead wires of the stellarator three-dimensional superconducting coil is completed.

[0081] By employing the aforementioned positioning method, layered and precise positioning is achieved. Through a segmented positioning scheme that combines fixed bends with fine-tuning of straight sections, the consistency between the lead-out position and the design model is ensured. This enables precise control of the spatial position of each lead-out, facilitating the subsequent welding and installation of connector terminals and the overall assembly of the terminal box. It also improves the assembly quality and production efficiency of subsequent processes and ensures reliable connection between the superconducting coil and the external feeder system.

[0082] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived from the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0083] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0084] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0085] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0086] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0087] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A precise positioning structure for the lead-out ends of a three-dimensional superconducting coil in a stellarator, wherein the three-dimensional superconducting coil of the stellarator comprises a plurality of multi-pane coils stacked together, each multi-pane coil comprising two lead-out ends, and each lead-out end extending from the outside of the corresponding multi-pane coil along a corresponding preset curve, and then extending along a corresponding preset straight line to form a curved segment and a straight segment, characterized in that, The precise positioning structure for the lead wire includes: A bend positioning seat is provided with multiple limiting holes. The multiple limiting holes are configured to correspond one-to-one with and fit the bends of all the lead ends of the multiple multi-coil coils. Each limiting hole extends along a corresponding preset curve to allow the bend of the corresponding lead end to pass through, so as to guide the bend of the lead end to extend along the corresponding preset curve and to position the bend of the lead end. A straight section positioning fixture is located on one side of the curved section positioning seat and includes multiple positioning brackets. Each positioning bracket includes a placement part. All placement parts of the multiple positioning brackets correspond one-to-one with and are adapted to the straight sections of all the wire ends of the multiple multi-panel coils. Each placement part is used to fix and position the straight section of the corresponding wire end so that the straight section of the corresponding wire end extends along the corresponding preset straight line.

2. The precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator as described in claim 1, characterized in that, The bend positioning seat includes a plurality of bend positioning plates stacked and fixedly connected to each other along a first direction. The plurality of bend positioning plates are arranged one-to-one with the bends of all the lead ends of the plurality of multi-pane coils. A portion of the limiting holes are formed in a corresponding bend positioning plate, and another portion of the limiting holes are formed in two adjacent bend positioning plates.

3. The precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator as described in claim 2, characterized in that, Each of the aforementioned bend positioning plates includes two or three bend positioning blocks, and the bend positioning blocks of all the aforementioned bend positioning plates are spliced ​​together to form the plurality of limiting holes.

4. The precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator as described in any one of claims 1-3, characterized in that, Each of the aforementioned placement parts includes a first positioning surface and a second positioning surface; Each of the positioning brackets is provided with a positioning component corresponding to its placement portion. The positioning component includes a first positioning member and a second positioning member. The first positioning member is disposed opposite to the corresponding first positioning surface in a first direction, and the second positioning member is disposed opposite to the corresponding second positioning surface in a second direction. The straight segment of each of the wire ends is located behind the corresponding placement portion, abutting between the first positioning member and the first positioning surface in the first direction, and abutting between the second positioning member and the second positioning surface in the second direction; the first direction and the second direction are perpendicular.

5. The precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator as described in claim 4, characterized in that, The positioning bracket has: a first threaded through hole corresponding to the first positioning member and extending along the first direction, and a second threaded through hole corresponding to the second positioning member and extending along the second direction; The first positioning element includes a first bolt, which passes through the corresponding first threaded through hole and is threadedly connected to the first threaded through hole, for abutting against the outer wall surface of the corresponding straight segment in the first direction; The second positioning element includes a second bolt, which passes through the corresponding second threaded through hole and is threadedly connected to the second threaded through hole, for abutting against the outer wall surface of the corresponding straight segment in the second direction.

6. The precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator as described in claim 5, characterized in that, The first positioning element further includes a first pad, which is fixed to one end of the first bolt, and the first bolt abuts against the outer wall surface of the corresponding straight segment through the first pad; The second positioning element also includes a second pad, which is fixed to one end of the second bolt, and the second bolt abuts against the outer wall surface of the corresponding straight segment through the second pad.

7. The precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator as described in claim 4, characterized in that, The two leads of each multi-pane coil are respectively a first lead and a second lead, with the first lead located at the bottom layer of the multi-pane coil and the second lead located at the top layer of the multi-pane coil; The second lead of the lower multi-coil coil and the first lead of the upper multi-coil coil in two adjacent multi-coil coils constitute a lead group; The two limiting holes corresponding to the two outlets of each outlet group are configured such that the ends of the curved sections of the second outlet and the first outlet in the outlet group are arranged side by side at intervals in the second direction and at the same height in the first direction, wherein the end of the curved section is the end of the curved section close to the corresponding straight section.

8. The precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator as described in claim 7, characterized in that, The plurality of positioning brackets includes two first positioning brackets and a second positioning bracket that corresponds one-to-one with the cable outlet group. Each of the first positioning brackets includes a placement portion, wherein the placement portion of one of the first positioning brackets is used to fix and position the straight segment of the lead wire at the bottom layer of the bottom layer of the plurality of multi-pane coils, and the placement portion of the other first positioning bracket is used to fix and position the straight segment of the lead wire at the top layer of the top layer of the plurality of multi-pane coils. The second positioning bracket includes two placement portions. In the cable outlet assembly, the straight segments of the first cable outlet and the second cable outlet are respectively arranged in a one-to-one correspondence with the two placement portions of the second positioning bracket. The first positioning surfaces of the two placement portions of the second positioning bracket are spaced apart in the second direction and are located at the same height in the first direction, so that the straight segments of the first cable outlet and the second cable outlet are located at the same height in the first direction.

9. The precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator as described in any one of claims 1-3, characterized in that, The plurality of multi-coil coils are fixed on the winding fixture, the bend positioning seat is fixed on the winding fixture, and the straight section positioning fixture is fixed on the winding fixture.

10. The precise positioning structure for the lead-out end of a three-dimensional superconducting coil in a stellarator as described in claim 9, characterized in that, The precise positioning structure for the lead wire also includes a fixing seat, which is used to fix the winding fixture. Each positioning bracket of the straight section positioning fixture is fixed on the fixing seat so as to fix it to the winding fixture through the fixing seat.

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