A low-temperature superconducting coil skeleton with controllable number of turns of wire winding, and a winding method
Patent Information
- Application Number
- CN202611121592.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-27
- Publication Date
- 2026-10-16
AI Technical Summary
[0010]本发明所要解决的技术问题在于，如何避免由于尺寸偏差、人工绕制偏差、跳线导致的超导线圈带来绕制质量的下降并使线圈通电后形成预期的场型
（1）本发明中，通过在线圈骨架上开设若干并排的底壁凹槽能够对超导线进行定位，能够固定线材，约束走线，通过层间隔板的设置，能够对相邻层内的超导线进行限位，通过跳线平台上开设跳线凹槽实现了，层间跳线的位置固定、跳线长度确定，保证跳线参数的可控性，保护跳线不受结构挤压造成损伤，可以有效约束线材绕制的具体位置，有效保证单层匝间距、单层匝数、层间距的实际尺寸与设计尺寸一致性，同时也完全消除人工误差，层内线材稀疏性完全一致。
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Abstract
Description
Technical Field
[0001] This invention relates to the field of superconducting coil technology, and more specifically to a low-temperature superconducting coil frame with controllable number of turns and a winding method. Background Technology
[0002] Low-temperature superconducting magnets are widely used in scientific research and applications requiring strong magnetic fields, such as nuclear fusion, large scientific facilities, medicine, and superconducting magnetic levitation. Superconducting coils, wound with wire, are the core component of superconducting magnets, generating stable, strong magnetic fields. Regardless of the application, the winding quality of superconducting coils is subject to stringent requirements.
[0003] In scientific research fields such as nuclear fusion and large-scale scientific facilities, customized non-standard superconducting magnets are generally used according to the specific requirements of scientific research. The scientific research field places stringent requirements on the magnetic field type generated by the superconducting magnet, and therefore also imposes strict requirements on the winding quality of the superconducting coil—such as the number of winding layers, the number of turns per layer (number of turns per coil layer), and the overall shape of the coil.
[0004] In medical, magnetic levitation, and other applications, standardized off-the-shelf superconducting magnets are generally used. These applications place stringent requirements on the consistency of physical properties among different superconducting magnets of the same model. Therefore, the quality of different superconducting coils, including the number of winding layers, the number of turns, and the overall shape of the coil, must also have excellent consistency.
[0005] As mentioned above, superconducting magnets must have excellent structural quality in both non-standard scenarios in scientific research and standardized applications in engineering. The number of winding layers, number of turns, and coil shape must be kept consistent with the technical requirements.
[0006] Low-temperature superconducting coils, which are wound using wire, are currently still wound manually due to their non-standard customization, winding complexity, and the fragility of the wire. However, this manual intervention means that the winding quality of superconducting coils cannot be fully controlled.
[0007] Currently, ensuring the winding quality of superconducting coils generally relies on the coordinated control of structural and process design, and fine-tuning of the wire by hand during actual production to meet the winding parameter requirements.
[0008] In terms of structural design, under the premise of ensuring that the structural parameters of the superconducting wire are consistent with the actual parameters, the layout and calculation of the wire are used to guide the number of layers to be wound and the number of turns per layer during the coil winding process. In terms of process design, based on the structural design guidelines, the thickness of the inter-wire insulation material, the amount of curing adhesive applied, and the winding tension of the wire are designed and adjusted to ensure that the number of layers and turns during the winding process are consistent with the structural design. If there is an error in the number of layers during the production process, the difference in the turn spacing is finely adjusted manually to meet the requirements for the number of layers.
[0009] Regardless of how standardized the technical or process design is, deviations between the actual coil frame dimensions and wire dimensions and the theoretical values are unavoidable. (See [reference needed]) Figure 1 , Figure 2 All of the above deviations will cause the actual dimensions of the single-layer turn spacing and wire layer spacing during the winding process to differ from the design values, and the deviations will further increase due to the increase in the number of winding layers. Existing low-temperature superconducting coils are all wound entirely manually or manually with the assistance of a winding machine. Due to the involvement of human operation, deviations in winding parameters due to human factors are unavoidable during the coil winding process. During the winding process of superconducting wires, interlayer jumpers are inevitable. The instability of the position and length of the jumpers further increases the uncontrollability of the wire winding spacing. At the same time, excessive compression of the jumpers during the winding process can also lead to potential damage to the wire. This results in uncontrollable deviations between the number of turns per layer and the number of layers in the coil and the design values. Even if the number of turns per layer and the number of layers are artificially controlled to be consistent with the design during the winding process, it will still lead to inconsistent sparsity between wires, which in turn leads to non-uniformity of the magnetic field. Summary of the Invention
[0010] The technical problem to be solved by this invention is how to avoid the decrease in winding quality of superconducting coils caused by size deviation, manual winding deviation, and jumper wires, and to form the expected field shape after the coil is energized.
[0011] The present invention solves the above-mentioned technical problems through the following technical means: a low-temperature superconducting coil skeleton with controllable number of turns of wire winding, including a coil skeleton, the coil skeleton including a bottom wall of the skeleton and side walls of the skeleton fixed on both sides of the bottom wall of the skeleton, a plurality of bottom wall grooves arranged in parallel are formed on the bottom wall of the skeleton, the superconducting wire can be partially embedded in the bottom wall grooves, the bottom wall grooves are used to limit the superconducting wire, the jumper platform is a slope and the jumper platform is provided with jumper grooves, a plurality of layer spacers are provided on the outer side of the bottom wall of the skeleton, the top and bottom of the layer spacers are respectively provided with top grooves and bottom grooves adapted to the superconducting wire, the superconducting wire is wound along the plurality of bottom wall grooves on the bottom wall of the skeleton or the top grooves on the layer spacers to form a layer of superconducting wire, the layer spacers are provided between the superconducting wires of adjacent layers, and jumper platforms are provided on one side of the bottom wall of the skeleton and on the layer spacers.
[0012] As a preferred technical solution, the bottom wall groove includes a straight section one, a deflection section, and a straight section two connected in sequence, with the straight section one and the straight section two being staggered.
[0013] As a preferred technical solution, the depth of the bottom wall groove is one-fifth to one-tenth of the radius of the superconducting wire, the slope angle is 10° to 20°, the radius of curvature of the arc groove is the same as the radius of the wire, and the spacing of the arc groove is the sum of the diameter of the superconducting wire and 0.05mm.
[0014] As a preferred technical solution, the bottom wall groove, jumper groove, top groove, and bottom groove are all arc-shaped grooves.
[0015] As a preferred technical solution, several bottom wall grooves are arranged in parallel.
[0016] As a preferred technical solution, the coil frame is an oval ring structure with an oval through hole at its center extending in the same direction as the outer contour, so that the coil frame forms a ring with the same radial wall thickness.
[0017] As a preferred technical solution, the top groove and bottom groove have the same structure as the bottom wall groove.
[0018] As a preferred technical solution, the coil frame has a U-shaped cross-section.
[0019] As a preferred technical solution, the material of the spacer plate is GFRP composite material or copper.
[0020] This invention also provides a winding method for a low-temperature superconducting coil skeleton with controllable number of turns using wire. The coil skeleton has several layers of superconducting wire, including winding a first layer of superconducting wire along a bottom groove at the bottom of the coil skeleton, and winding it along a jumper platform to a second layer; before winding the second layer of superconducting wire, placing a layer spacer on the first layer of superconducting wire; winding the second layer of superconducting wire with the top groove of the layer spacer, and winding the third layer through the jumper platform on the layer spacer; before winding the third layer of superconducting wire, laying another layer spacer on the second layer of superconducting wire; and so on until the winding is completed.
[0021] The beneficial effects of this invention are as follows: (1) In this invention, the superconducting wire can be positioned by opening several parallel bottom wall grooves on the coil skeleton, which can fix the wire and constrain the routing. By setting the layer spacer, the superconducting wire in the adjacent layer can be limited. The jumper groove is opened on the jumper platform to achieve the fixed position of the jumper between layers and the determined jumper length, ensuring the controllability of the jumper parameters, protecting the jumper from damage caused by structural compression, effectively constraining the specific position of the wire winding, effectively ensuring the consistency between the actual size of the single-layer turn spacing, the number of single-layer turns, and the layer spacing and the design size, while completely eliminating human error and ensuring that the sparseness of the wire in the layer is completely consistent. Attached Figure Description
[0022] Figure 1 A schematic diagram of an ideal wire arrangement structure is provided for the background art of this invention; Figure 2 A schematic diagram of the actual wire arrangement structure provided for the background technology of this invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the coil frame provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the skeleton bottom wall structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of a bottom groove wound with a superconducting wire provided in an embodiment of the present invention, wherein... Figure 5 The order of the windings is a, b, c, d, e, f, g, h, i, g, k, l, m, n; Figure 6 This is a schematic diagram of the interlayer fixing plate structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the shelf fixing plate wrapped with superconducting wire provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of a superconducting wire wound around a coil frame according to an embodiment of the present invention; Figure 9 A schematic diagram of the coil frame provided in an embodiment of the present invention; Reference numerals: 1. Coil frame; 11. Bottom wall of the frame; 12. Side wall of the frame; 13. Bottom wall groove; 131. Straight section one; 132. Deflection section; 133. Straight section two; 14. Lateral inlet; 15. Jumper platform; 151. Jumper groove; 2. Layer partition; 21. Top groove; 22. Bottom groove; 3. Superconducting wire; 31. First layer superconducting wire; 32. Second layer superconducting wire; 33. Third layer superconducting wire. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] See Figure 3 , Figure 6A low-temperature superconducting coil frame with controllable number of turns for wire winding includes a coil frame 1 and a layer spacer 2. The coil frame 1 has a U-shaped structure and includes a frame bottom wall 11 and frame side walls 12 fixedly connected to both sides of the frame bottom wall 11. One end of the frame side wall 12 is fixedly connected to the frame bottom wall 11, and the other end extends toward the end away from the frame bottom wall 11. In this embodiment, the frame bottom wall 11 and the frame side wall 12 are an integral structure, and the frame side wall 12 is used to provide external constraint for winding. The top of the bottom wall 11 of the skeleton has several parallel and evenly distributed bottom wall grooves 13 along its width direction. In this embodiment, seven parallel bottom wall grooves 13 are provided. The bottom wall grooves 13 are used to position the superconducting wire 3. The bottom wall grooves 13 include a straight section 131, a deflection section 132, and a straight section 2 133 connected in sequence. The straight section 131 and the straight section 2 133 are parallel and staggered. The deflection section 132 is a transition section connecting the straight section 131 and the straight section 2 133. A lateral inlet 14 is provided on a side wall 12 of the skeleton. The superconducting wire 3 extends into a bottom wall groove 13 on the bottom wall 11 of the skeleton through the lateral inlet 14. The bottom wall groove 13, the jumper groove 151, the top groove 21, and the bottom groove 22 are all arc-shaped grooves. The superconducting wire 3 is wound along the coil skeleton 1 to form a multi-layer structure. In this embodiment, three layers are used as an example, namely the first layer superconducting wire 31, the second layer superconducting wire 32, and the third layer superconducting wire 33. The superconducting wire 3 of the first layer superconducting wire 31 is embedded in the groove to achieve effective fixation of the wire and ensure that the spacing between the wires is not affected by the winding tension, structural size, and other filling materials, and is not subject to compression displacement.
[0025] It should be noted that the radius of curvature of the arc groove is the same as the radius of the wire. The spacing of the arc groove is the sum of the wire diameter and 0.05mm, and it cannot be negative. Otherwise, the wire cannot be fully accommodated. If the positive difference is too small, the wire will be squeezed and cannot be embedded in the arc groove. If it is too high, the gap between the wires will be too large, affecting the volume ratio.
[0026] The wire runs in the same direction as the bottom wall groove 13. The depth of the arc groove is 1 / 10 to 1 / 5 of the wire radius. If the arc groove is too deep, the edges of the arc groove will damage the wire during the winding process; if the arc groove is too shallow, the groove will weaken its fixing effect on the wire. In this embodiment, the depth of the arc-shaped groove is 1 / 10 to 1 / 5 of the wire radius: it should not be too deep, otherwise the edges of the groove will damage the wire during winding; it should not be too shallow, otherwise the groove will weaken the fixing effect on the wire. See Figure 4A jumper platform 15 is fixedly connected to one side of the bottom wall 11 of the skeleton. The jumper platform 15 is a slope with an angle of 10° to 20°. A jumper groove 151 is provided on the jumper platform 15. After the superconducting wire 3 is filled with all the bottom wall grooves 13 of the first layer of superconducting wire 31, it continues to extend along the jumper groove 151 to the second layer of superconducting wire 32. See Figure 6 , Figure 7 To avoid jumpers between layers, a layer partition plate 2 is set between adjacent layers. The layer partition plate 2 is set between the first layer superconducting wire 31 and the second layer superconducting wire 32. The bottom of the layer partition plate 2 has multiple bottom grooves 22 that are adapted to the superconducting wire 3, and the top of the layer partition plate 2 has a top groove 21 that is adapted to the superconducting wire 3. A jumper platform 15 is also set on the layer partition plate 2, and the jumper platform 15 also has jumper grooves 151.
[0027] The partition plate 2 is a thin plate, and the material of the partition plate 2 is GFRP composite material or copper. The thickness of the partition plate 2 after removing the groove is 0.1mm to 0.3mm.
[0028] The deflection section 132 of the new turn of wire and the previous turn of wire, as well as the jumper platform 15 after the single-layer winding is completed, and the layer spacer 2 simultaneously serve to fix the bottom layer of wire and form the base for winding the new layer of wire.
[0029] See Figure 9 In this embodiment, the coil frame 1 is an oval ring structure with an oval through hole at its center that extends in the same direction as the outer contour, so that the coil frame 1 forms a ring with the same radial wall thickness.
[0030] How to use: See Figure 8 The first layer of superconducting wire 31 is wound along the bottom groove 22 at the bottom of the coil frame 1, and then enters the second layer through the jumper platform 15 on the bottom wall 11 of the frame. Before winding the second layer of superconducting wire 32, a layer spacer 2 is laid on the first layer of superconducting wire 31; The second layer of superconducting wire 32 is wound around the top groove 21 and bottom groove 22 of the spacer plate 2, and the third layer is wound through the jumper platform 15 on the spacer plate 2. Before winding the third layer of superconducting wire 33, another layer of spacer 2 is laid on the second layer of superconducting wire 32; Repeat the process of wrapping the yarn until the winding is complete.
[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A low-temperature superconducting coil frame with controllable number of turns wound from wire, characterized in that, The system includes a coil frame, which comprises a bottom wall and side walls fixed to both sides of the bottom wall. The bottom wall has several parallel bottom wall grooves, into which the superconducting wire can be partially embedded. The bottom wall grooves are used to limit the movement of the superconducting wire. The jumper platform is a ramp and has a jumper groove. Several layer spacers are provided on the outer side of the bottom wall. The top and bottom of the layer spacers are respectively provided with top grooves and bottom grooves adapted to the superconducting wire. The superconducting wire is wound along several bottom wall grooves on the bottom wall or top grooves on the layer spacers to form a layer of superconducting wire. The layer spacers are located between the superconducting wires of adjacent layers. Jumper platforms are provided on one side of the bottom wall and on the layer spacers.
2. The low-temperature superconducting coil frame with controllable number of wire turns according to claim 1, characterized in that, The bottom wall groove includes a straight section one, a deflection section, and a straight section two connected in sequence, with straight section one and straight section two being staggered.
3. The low-temperature superconducting coil frame with controllable number of wire turns according to claim 1, characterized in that, The depth of the bottom wall groove is one-fifth to one-tenth of the radius of the superconducting wire, the slope angle is 10° to 20°, the radius of curvature of the arc groove is the same as the radius of the wire, and the spacing of the arc groove is the sum of the diameter of the superconducting wire and 0.05mm.
4. The low-temperature superconducting coil frame with controllable number of turns wound on wire according to claim 1, characterized in that, The bottom wall groove, jumper groove, top groove, and bottom groove are all arc-shaped grooves.
5. A low-temperature superconducting coil frame with controllable number of turns wound from wire, as described in claim 1, is characterized in that... Several bottom wall grooves are arranged in parallel.
6. A low-temperature superconducting coil frame with controllable number of wire turns according to claim 1, characterized in that, The coil frame is an oval ring structure with an oval through hole at its center that extends in the same direction as the outer contour, causing the coil frame to form a ring with the same radial wall thickness.
7. A low-temperature superconducting coil frame with controllable number of wire turns according to claim 1, characterized in that, The top and bottom grooves have the same structure as the bottom wall groove.
8. A low-temperature superconducting coil frame with controllable number of turns wound on wire according to claim 1, characterized in that, The coil frame has a U-shaped cross-section.
9. A low-temperature superconducting coil frame with controllable number of turns wound from wire, as described in claim 1, is characterized in that... The partition plate is made of GFRP composite material or copper.
10. A winding method for a low-temperature superconducting coil skeleton with controllable number of turns using the wire as described in any one of claims 1-9, characterized in that, The coil frame has several layers of superconducting wire, including winding the first layer of superconducting wire along the bottom groove at the bottom of the coil frame and winding it along the jumper platform to the second layer; before winding the second layer of superconducting wire, a layer spacer is placed on the first layer of superconducting wire; the second layer of superconducting wire is wound with the top groove of the layer spacer and the third layer is wound through the jumper platform on the layer spacer; before winding the third layer of superconducting wire, another layer spacer is laid on the second layer of superconducting wire; the winding is repeated until the winding is completed.