Multi-point solidification method and system for wrapping the earth insulation of a three-dimensional superconducting coil of a stellarator

Abstract

The application discloses a multi-point solidification ground insulation wrapping method and system for a three-dimensional superconducting coil of a star simulator, adopts a plurality of component solidification clamps arranged along the circumference of the coil, realizes multi-point synchronous clamping and solidification from the two side surfaces and the two end surfaces of the coil, continuously winds an insulation belt from the gap between adjacent clamps as a starting area, when the insulation belt reaches the clamp position, only the corresponding single set of clamps is removed, the remaining clamps continue to limit, and the clamp is reset and locked immediately after the insulation belt passes through the shielding section. The application solves the problem that the existing ground insulation wrapping process for the three-dimensional superconducting coil of the star simulator cannot be compatible with the tool clamping and continuous insulation wrapping, is easy to cause the coil deformation, the ground insulation layer damage defect, and has low operation efficiency and poor product consistency, and improves the insulation coating quality and forming precision of the coil.

Description

Technical Field

[0001] This application relates to the technical field of superconducting coil winding, and in particular to a multi-point solid-type ground insulation winding method and system for a stellarator three-dimensional superconducting coil. Background Technology

[0002] The stellarator's three-dimensional superconducting coil has an irregular toroidal curved surface structure and is the core superconducting component of the stellarator nuclear fusion device. Its insulation performance to ground directly determines the safety and stability of the coil's cryogenic operation. During the fabrication of the superconducting coil, after the coil is formed as a whole, a full-coverage insulation wrapping treatment to ground is required on the outer surface. By wrapping the insulating tape, a complete insulation protective layer to ground is formed, realizing the electrical isolation between the coil and external tooling and structure, and avoiding electrical faults such as ground discharge and insulation breakdown during operation.

[0003] In the current process of insulating the three-dimensional superconducting coil of a stellarator, the coil is generally clamped and shaped using an integral fixed fixture before continuous insulation wrapping is carried out. Since the three-dimensional superconducting coil of the stellarator is an irregular curved ring structure, it is prone to deformation after demolding. Therefore, the insulation wrapping process must rely on the fixture for continuous limiting and fixing. The existing wrapping methods mostly involve removing the fixture or canceling the limiting on a large scale before insulation wrapping, which has significant drawbacks: if the fixture is removed entirely, the coil will be completely unconstrained, which can easily lead to surface deformation and dimensional deviation, resulting in coil accuracy failure; if most of the fixture is retained for continuous clamping, the area covered by the fixture cannot be continuously wrapped with insulation tape, and only segmented wrapping is possible, which can easily lead to quality defects such as insulation layer overlap gaps, breaks, and uneven thickness.

[0004] Furthermore, traditional winding processes cannot guarantee the integrity of the insulation layer, which can easily lead to problems such as local defects, cracks, and inadequate wrapping of the insulation layer to ground. This not only significantly reduces the insulation reliability and service life of the superconducting coil, but can also cause the entire coil to be scrapped in severe cases. In addition, traditional processes require repeated shutdowns to disassemble and reassemble large-scale tooling and repair insulation gaps. The procedures are cumbersome and the continuity of operations is poor, which greatly reduces the efficiency and consistency of the three-dimensional superconducting coil insulation wrapping to ground, and cannot meet the requirements of high-precision, high-reliability, and large-scale superconducting coil manufacturing for stellarators.

[0005] In summary, the existing three-dimensional superconducting coil insulation wrapping process for stellarators suffers from incompatibility between tooling clamping and continuous insulation wrapping, which easily leads to coil deformation, damage to the insulation layer, low work efficiency, and poor product consistency. Summary of the Invention

[0006] The purpose of this application is to solve the problems of incompatibility between tooling clamping and continuous insulation winding in the process of three-dimensional superconducting coil insulation wrapping for stellarators, which easily leads to coil deformation, damage to the insulation layer to ground, low work efficiency and poor product consistency.

[0007] To address the aforementioned technical problems, this application discloses a multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil. The coil is ring-shaped and has two sides arranged opposite each other in its radial direction and two end faces arranged opposite each other in its axial direction. The wrapping method includes:

[0008] The coil is formed by multi-point synchronous clamping and fixing through the wrapping fixture; wherein, the wrapping fixture includes a fixed bracket and multiple split-type fixing fixtures respectively fixed to the fixed bracket, all the split-type fixing fixtures of the wrapping fixture are arranged at intervals along the circumference of the coil, and each split-type fixing fixture is pressed against two sides and two end faces of the coil.

[0009] The gap between two adjacent split-type fixed clamps is selected as the starting area for insulation wrapping. Starting from the starting area, the insulation tape is continuously wrapped around the outer surface of the coil along the circumference of the coil. During the wrapping process, when the insulation tape reaches the position of the corresponding split-type fixed clamp, only that split-type fixed clamp is removed, while all other split-type fixed clamps remain in a clamped and limited state. After the insulation tape has completely passed through the section blocked by the split-type fixed clamp, it is immediately reset and locked.

[0010] Using the above technical solution, a multi-unit fixed-shape clamp arranged at circumferential intervals achieves full-circumferential, multi-point synchronous clamping and shaping of the three-dimensional irregular superconducting coil. The clamps simultaneously press the two sides and two ends of the coil, forming a comprehensive shaping constraint on the coil surface, effectively avoiding deformation and dimensional deviation of the coil during the insulation wrapping process. Furthermore, during the wrapping process, only one set of multi-unit fixed-shape clamps is removed when the insulation tape reaches the corresponding clamp position, while the remaining clamps remain in a pressing and limiting state. This ensures that most of the coil surface remains in a constrained and shaped state, with only local sections briefly freed from obstruction. This provides working space for continuous and continuous wrapping of the insulation tape, while also avoiding defects such as insulation overlap gaps, breaks, and uneven wrapping, achieving continuous and complete wrapping of the insulation tape from the outer surface of the coil to the ground.

[0011] According to the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil disclosed in this application, before the step of forming a multi-point synchronous clamping solid shape of the coil by the overall wrapping fixture, the method further includes:

[0012] A winding mold with a coil wound is placed at a predetermined position below multiple fixed legs of a fixed bracket; wherein, the winding mold includes a winding bottom mold and two winding side molds, the two winding side molds are respectively fixedly set on both sides of the winding bottom mold along its radial direction, and each includes multiple side plates arranged sequentially and corresponding one-to-one along its circumference, the wound coil is placed on the top surface of the winding bottom mold and located between the two winding side molds; the fixed bracket includes a rigid frame and multiple fixed legs corresponding one-to-one with multiple split-type fixed clamps, the multiple fixed legs are respectively fixed to the rigid frame and located directly below the rigid frame;

[0013] A portion of the side plates corresponding to each winding side plate in the winding mold at the preset position are removed at intervals. Simultaneously, a corresponding split-type fixing clamp is assembled on the outer surface of the coil segment corresponding to the portion of the side plate in the coil so that the split-type fixing clamp is pressed against the two sides and two end faces of the coil. The assembled split-type fixing clamp is then fixed to the corresponding fixing leg.

[0014] Remove the remaining side plates of each winding side mold in the winding mold at the preset position one by one, and simultaneously assemble the corresponding split-type fixing clamps on the outer surface of the coil segment corresponding to the remaining side plates in the coil so that the split-type fixing clamps press against the two sides and two end faces of the coil, and fix the assembled split-type fixing clamps to the corresponding fixed legs.

[0015] After all the separate fixed clamps are assembled to the coil and fixed to the corresponding fixed legs, the winding bottom mold is lowered and removed so that the coil is completely separated from the winding bottom mold. The coil is then clamped and fixed at multiple points synchronously by wrapping the tooling as a whole.

[0016] By adopting the above technical solution, in the transition stage of coil demolding and shape change, this application maintains a corresponding constraint structure to limit and shape the coil surface throughout the entire process of the coil leaving the mold constraint by simultaneously dismantling the side plate of the winding side mold and installing the split-type shape-fixing fixture. During the process of dismantling the side plate of the side mold in stages, the side plate that has not been removed and the assembled split-type shape-fixing fixture form an alternating support constraint, avoiding the problems of unconstrained suspended deformation, surface displacement, and dimensional deviation of the coil when the mold is removed and the tooling is switched and shaped. This effectively solves the problems of poor demolding rigidity and easy deformation of three-dimensional irregular superconducting coils.

[0017] According to the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil disclosed in this application, the steps for assembling a single split-type solid-type fixture include:

[0018] First, attach the lower conforming clamp tightly to the corresponding positions on the lower end faces of the two ends of the coil;

[0019] Next, fix the left and right clamping plates on the lower conforming clamping plate, fix the upper clamping plate on the left and right clamping plates, and fix the connecting plate on the upper clamping plate.

[0020] Then, the upper profile clamping plate, the left profile clamping plate, and the right profile clamping plate are installed on the upper end face of the two end faces of the coil and the corresponding positions on the two sides. The left clamping plate is pressed by multiple first clamping parts, the right clamping plate is pressed by multiple second clamping parts, and the upper clamping plate is pressed by multiple third clamping parts, thus completing the assembly of the split-type fixed clamping fixture. The split-type fixed clamping fixture is used to achieve the shaping constraint of the local position of the coil.

[0021] Furthermore, in the step of fixing the assembled split-type fixed clamp to the corresponding fixed leg, the connecting plate of the assembled split-type fixed clamp is fixed to the corresponding fixed leg.

[0022] By adopting the above technical solution, this application can accurately adapt to the complex irregular curved surface structure of the three-dimensional superconducting coil of the stellarator through the contour clamping plate. It can achieve all-round and full-coverage contour fitting constraint from both sides and the top and bottom ends of the coil. Compared with the integral clamp, it can effectively avoid the problems of stress concentration at single point clamping, poor local fitting, and excessive limit gap. Through the cooperation of each clamping plate and multiple sets of independent clamping parts, the clamping force of the coil in each direction can be independently adjusted to ensure that each coil surface can be tightly fitted to the contour surface of the clamp, realizing high-precision shaping constraint of the local position of the coil, and effectively reducing problems such as coil deformation and dimensional deviation during insulation wrapping.

[0023] According to the multi-point solid-type ground insulation winding method of a stellarator three-dimensional superconducting coil disclosed in this application, an installation groove is provided on the top of the winding bottom mold corresponding to the position of each split solid-type fixture, and the installation groove is recessed from the top surface of the winding bottom mold toward the bottom surface.

[0024] In the step of attaching the lower profile clamp to the corresponding position on the lower end face of the two end faces of the coil, the lower profile clamp is also installed in the mounting groove.

[0025] By adopting the above technical solution, the lower contour clamping plate is limited and installed using the pre-set mounting groove of the winding bottom mold. This effectively limits the assembly position and installation posture of the lower contour clamping plate, avoiding problems such as offset, misalignment, and warping during the clamping plate assembly process. It ensures that the lower contour clamping plate can accurately, stably, and tightly fit the lower end face of the coil, improving the alignment accuracy and fit of the fixture bottom assembly.

[0026] According to the multi-point solid-type ground insulation wrapping method of a stellarator three-dimensional superconducting coil disclosed in this application, when the total number of split-type solid-type clamps arranged along the circumference of the coil is m sets, where m is an integer greater than or equal to 2, all the split-type solid-type clamps divide the coil into m independent support sections. When only a single set of split-type solid-type clamps is removed during the insulation wrapping process, only the corresponding support section of the coil is released from constraint for a short time, while the remaining curved surfaces continue to be supported by multiple points.

[0027] By adopting the above technical solution, this application changes the shortcomings of traditional insulation wrapping operations, which involve overall loosening and large-scale disassembly constraints, through a multi-section segmented support structure. While meeting the requirements for insulation tape to pass through and avoid obstacles, it maximizes the overall shaping and constraint capabilities of the coil. Most of the coil's curved surface is in an effective clamping and limiting state throughout the entire process, with no large-scale unconstrained areas. This effectively solves the problems of overall coil deformation, curved surface springback, and dimensional deviation during the insulation wrapping and disassembly fixture process, ensuring the overall forming accuracy of the coil remains stable throughout the entire process.

[0028] According to the multi-point solid-type ground insulation wrapping method of a stellarator three-dimensional superconducting coil disclosed in this application, after the coil has completed all ground insulation wrapping, the connection between each split-type solid-type clamp and multiple fixed legs is disconnected in sequence, and then all split-type solid-type clamps on the coil are removed in batches to take out the three-dimensional superconducting coil with completed insulation wrapping.

[0029] Using the above technical solution, after the coil insulation wrapping process is completed, this application adopts the method of first disconnecting the connection between the clamp and the fixed support leg, and then removing the split fixed clamps on the outer periphery of the coil in batches; the step-by-step removal method can avoid the coil losing all external constraints and deforming and springing back when the clamps are removed at the same time; during the removal process, the clamps that have not yet been removed can continue to support and limit the coil, slowly release the clamping constraint force, and reduce the risk of deformation caused by the stress concentration release inside the coil after the insulation wrapping is completed.

[0030] According to the multi-point solid-type ground insulation wrapping method of a stellarator three-dimensional superconducting coil disclosed in this application, the middle gap between two adjacent sets of three-dimensional solid-type clamps is used as the channel for the insulation tape to enter and exit during the beginning and end stages of the coil ground insulation wrapping.

[0031] By adopting the above technical solution, this application utilizes the gap reserved between adjacent split-type fixed clamps as the channel for the introduction and termination of the insulating tape. The start and end operations of the insulating tape can be completed without temporary disassembly of the clamps, avoiding the loosening of coil constraints caused by disassembling and assembling the clamps during the starting and ending winding stages. The starting and ending sections of the insulating tape can be naturally arranged in the clamp gap area without being blocked or squeezed by the clamps, which can ensure that the insulating tape is neatly arranged at the starting and ending positions and prevent insulation gaps or squeezing damage in the starting and ending areas.

[0032] The embodiments of this application also disclose a multi-point solid-ground insulation wrapping system for a stellarator three-dimensional superconducting coil. The wrapping system is applicable to the above-described multi-point solid-ground insulation wrapping method for a stellarator three-dimensional superconducting coil. The wrapping system includes:

[0033] The wrapping fixture includes a fixed bracket and multiple split-type fixed clamps. The multiple split-type fixed clamps are respectively fixed to the fixed bracket and are used to be spaced on the coil along the circumference of the coil. Each split-type fixed clamp is pressed against two sides and two end faces of the coil.

[0034] Insulating tape release mechanism: The insulating tape release mechanism is used to continuously release insulating tape so that the insulating tape continuously wraps around the outer surface of the coil.

[0035] Using the above technical solution, this multi-point solid-type ground insulation wrapping system uses multi-component three-dimensional solid-type clamps in the wrapping fixture to be arranged at intervals along the circumference of the coil and to clamp and solidify the coil from both sides and both ends. With the insulation tape feeding mechanism continuously supplying insulation tape, the continuous winding operation of insulation tape on the outer surface of the coil can be stably realized.

[0036] According to the multi-point fixed-type ground insulation wrapping system of a stellarator three-dimensional superconducting coil disclosed in this application, the fixed bracket includes a rigid frame, multiple fixed legs and a support structure supporting the rigid frame. The multiple fixed legs are respectively fixedly connected to corresponding positions of the rigid frame. Multiple split-type fixed clamps correspond one-to-one with the multiple fixed legs, and each split-type fixed clamp is fixed on the corresponding fixed leg.

[0037] By adopting the above technical solution, the rigid frame and the support structure constitute the load-bearing foundation of the entire wrapping tooling, which has good structural rigidity and can withstand the clamping force of the fixture and the external force disturbance brought about by the disassembly and assembly operations, effectively suppressing the deformation of the support itself.

[0038] According to the multi-point solid-type ground insulation winding system of a stellarator three-dimensional superconducting coil disclosed in this application, the winding system also includes a winding mold and a transfer mechanism.

[0039] The winding mold includes a winding bottom mold that is annular and two winding side molds. The two winding side molds are fixedly disposed on both sides of the winding bottom mold along its radial direction, and together with the winding bottom mold, they form a cavity for accommodating the coil. Each winding side mold includes multiple side plates arranged sequentially along its circumference.

[0040] The transfer mechanism is configured to place the winding mold with the coil wound on it at a preset position under multiple fixed legs of the fixed bracket, and lower and move the winding bottom mold out so that the coil is completely detached from the winding bottom mold.

[0041] Using the above technical solution, the bottom winding mold and the two side winding molds together form a cavity to accommodate the coil. The segmented side plates can be disassembled segment by segment, which can make room for the installation of the split-type fixed fixture, realizing the alternating connection of mold constraint and tooling clamping constraint. The transfer mechanism can carry the winding mold carrying the coil to complete the precise positioning and transportation, and smoothly complete the lowering and removal of the bottom winding mold, reducing the alignment deviation and collision risk caused by manual operation.

[0042] In summary, the beneficial effects of this application are:

[0043] This application provides a multi-point fixed-type ground insulation wrapping method for a stellarator's three-dimensional superconducting coil. The method uses the gap between adjacent split-type fixed clamps as the starting area for insulation wrapping. Insulation tape is continuously wound around the coil circumferentially. When the insulation tape reaches a clamp position, only the corresponding clamp is removed, while the remaining clamps remain pressed and limited. Once the insulation tape passes through the obstructed section, the clamps are immediately reset and locked, achieving continuous and continuous ground insulation wrapping. During the insulation wrapping process, most of the coil surface remains under multi-point constraint, with only local sections briefly released from the constraints. This avoids large-scale loosening of the clamps, which could cause deformation and dimensional deviation of the stellarator's three-dimensional irregular superconducting coil, ensuring stable coil forming accuracy and achieving complete insulation wrapping without breaks or gaps. This solves the insulation defects caused by segmented wrapping, effectively protects the integrity of the ground insulation layer, and improves the coil's insulation reliability and long-term operational stability. Attached Figure Description

[0044] Figure 1 A schematic diagram of the coil and winding mold for the multi-point solid-type ground insulation winding method of the three-dimensional superconducting coil of the stellarator provided in the embodiments of this application;

[0045] Figure 2 A schematic diagram of the wrapping tooling for the multi-point solid-type ground insulation wrapping method of the three-dimensional superconducting coil of the stellarator provided in the embodiments of this application;

[0046] Figure 3 A schematic diagram of a split-type solid-type fixture for a multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil provided in an embodiment of this application;

[0047] Figure 4 A schematic diagram of the fixing bracket for the multi-point solid-type ground insulation wrapping method of the three-dimensional superconducting coil of the stellarator provided in the embodiments of this application;

[0048] Figure 5 This is a schematic diagram of the overall clamping and solidification of the coil by the wrapping fixture in the multi-point solid-type ground insulation wrapping method for the three-dimensional superconducting coil of the stellarator provided in the embodiments of this application;

[0049] Figure 6This is a schematic diagram of the winding mold detaching from the coil in the multi-point solid-type ground insulation winding method for the three-dimensional superconducting coil of the stellarator provided in the embodiments of this application;

[0050] Figure 7 This is a schematic diagram of the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil provided in the embodiments of this application, in which the coil is clamped and solidified solely by a wrapping fixture;

[0051] Figure 8 This is a schematic diagram illustrating the process of individually removing the split-type solid-type clamp during the insulation wrapping process in the multi-point solid-type ground insulation wrapping method for the three-dimensional superconducting coil of the stellarator provided in the embodiments of this application.

[0052] Figure 9 This is a schematic diagram of the restoration of the split-type solid-type clamp after the insulation wrapping is completed in the multi-point solid-type ground insulation wrapping method for the three-dimensional superconducting coil of the stellarator provided in the embodiments of this application;

[0053] Figure 10 A flowchart illustrating the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil provided in this application embodiment;

[0054] Figure 11 The flowchart illustrates the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil provided in this application embodiment, in which the coil is formed by forming a multi-point synchronous clamping solid-type by the wrapping fixture as a whole.

[0055] Explanation of reference numerals in the attached figures:

[0056] 100. Wrapping tooling;

[0057] 110. Fixed bracket; 111. Rigid frame; 112. Support column; 113. Fixed leg;

[0058] 120. Split-type fixed clamp; 1201. Lower contour clamp; 1202. Left contour clamp; 1203. Right contour clamp; 1204. Upper contour clamp; 1205. Left clamping plate; 1206. Right clamping plate; 1207. Upper clamping plate; 1208. Connecting plate; 1209. First clamping component; 1211. Second clamping component; 1212. Third clamping component;

[0059] 200. Winding mold; 210. Winding bottom mold; 220. Winding side mold; 221. Side plate;

[0060] 300, coil;

[0061] 400. Insulating tape. Detailed Implementation

[0062] The existing three-dimensional superconducting coil insulation wrapping process for stellarators has problems such as incompatibility between tooling clamping and continuous insulation wrapping, which can easily cause coil deformation and ground insulation layer damage, as well as low operation efficiency and poor product consistency.

[0063] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0064] This application provides a method for multi-point solid-type ground insulation wrapping of a three-dimensional superconducting coil for a stellarator, such as... Figures 1 to 4 As shown, the coil 300 is annular and has two sides opposite to each other in its radial direction and two end faces opposite to each other in its axial direction. The winding method includes:

[0065] The coil 300 is formed by multi-point synchronous clamping and fixing by the wrapping fixture 100 as a whole; wherein, the wrapping fixture 100 includes a fixed bracket 110 and a plurality of split-type fixing clamps 120 respectively fixed to the fixed bracket 110. All the split-type fixing clamps 120 of the wrapping fixture 100 are arranged at intervals along the circumference of the coil 300 on the coil 300, and each split-type fixing clamp 120 presses against two sides and two end faces of the coil 300.

[0066] like Figures 8 to 10 As shown, the gap between two adjacent split-type fixing clamps 120 is selected as the starting area for insulation wrapping. Starting from the starting area, the insulation tape 400 is continuously wrapped around the outer surface of the coil 300 along the circumference of the coil 300. During the wrapping process of the insulation tape 400, when the insulation tape 400 travels to the position of the corresponding split-type fixing clamp 120, only that split-type fixing clamp 120 is removed, while all other split-type fixing clamps 120 remain in a pressed and limited state. After the insulation tape 400 has completely passed through the section blocked by the split-type fixing clamp 120, it is immediately reset and locked.

[0067] The fixed bracket 110 is used to support and install the entire split-type fixed clamp 120, providing an assembly reference and rigid support for the entire wrapping tooling 100, ensuring the installation position accuracy and clamping stability of the entire split-type fixed clamp 120, and effectively resisting assembly disturbances and clamping stress deformation during the insulation wrapping process.

[0068] The split-type fixing fixture 120 is used to fit and press the curved surface of the coil 300 from both radial sides and axial upper and lower end faces in all directions, realizing multi-point synchronous fixing and limiting of the coil 300. It can adapt to the complex curved surface structure of the three-dimensional irregular ring coil 300 of the stellarator and ensure the accuracy of the coil 300 insulation winding process.

[0069] The insulating tape 400 is used to form a continuous and complete ground insulation protective layer on the outer surface of the coil 300, so as to realize the overall electrical isolation of the superconducting coil 300 and ensure the insulation operation safety of the coil 300 under low temperature conditions.

[0070] It should be noted that the outer surface of coil 300 includes the two sides of coil 300 and the upper and lower end faces of coil 300.

[0071] This application does not specifically limit the fixing method of the split-type fixed clamp 120 and the coil 300. For example, in one embodiment, the multi-component split-type fixed clamp 120 adopts a rigid clamping structure to connect with the coil 300. The relative positions of the contour clamping plate and the pressure plate of the entire split-type fixed clamp 120 are fixed. The two sides and two end faces of the coil 300 are simultaneously pressed by the pre-processed fixed contour surface, and the clamping shape remains constant. This connection method has a simple structure, simple assembly process, and stable clamping reference. It is suitable for mass production of stellarator three-dimensional superconducting coils 300 of the same specification and with good consistency of curved surface shape.

[0072] In another embodiment, the split-type fixed clamp 120 adopts an adjustable elastic clamping structure to connect with the coil 300. Each conforming clamp plate inside the clamp is equipped with an independent adjustable clamping component. The clamping of each set of clamp plates can be adjusted individually. During the assembly process, the amount of contact at each point can be finely adjusted according to the actual shaped surface of the coil 300 to compensate for minor manufacturing deviations of the coil 300 and avoid stress concentration caused by local hard contact. Furthermore, when the coil 300 is subjected to temperature changes and clamping force disturbances that cause slight deformation, the clamping force can be adaptively adjusted by relying on elastic buffering to prevent excessive local pressure from damaging the surface insulation of the coil 300.

[0073] The multi-point ground-to-ground insulation wrapping method disclosed in this application for a three-dimensional superconducting coil 300 of a stellarator employs a multi-part split-type fixing clamp 120 arranged at intervals along the circumference of the coil 300 to perform multi-point synchronous clamping and fixing of the coil 300. Only the gap between adjacent clamps is selected as the starting area for insulation wrapping, and the insulating tape 400 is continuously wound around the circumference of the coil 300. When the insulating tape 400 travels to the position of the corresponding split-type fixing clamp 120, only that split-type fixing clamp 120 is removed, while the other split-type fixing clamps 120 continue to maintain the clamping and limiting position. In this configuration, the insulating tape 400 immediately resets and locks the clamp after passing through the obstructed section. This arrangement only temporarily releases the constraint of a local section, while the remaining curved surfaces of the coil 300 always have effective shaping support, providing working space for the insulating tape 400 to continuously pass through and avoid obstacles. Furthermore, during the continuous wrapping of the insulating tape 400, most areas of the coil 300 will not experience a large-scale loss of constraint, avoiding wrinkles, gaps in the wrapping, and scratches and damage to the ground insulation layer caused by the deformation of the coil 300, thereby improving the integrity of the ground insulation wrapping and the forming quality.

[0074] Based on the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil 300 provided in this application, such as Figures 5 to 7 as well as Figure 11 As shown, before the step of forming a multi-point synchronous clamping and fixing of the coil 300 by wrapping the tooling 100 as a whole, the following steps are also included:

[0075] The winding mold 200 with the coil 300 wound on it is placed at a preset position below the multiple fixed legs 113 of the fixed bracket 110. The winding mold 200 includes a winding bottom mold 210 and two winding side molds 220. The two winding side molds 220 are respectively fixedly arranged on both sides of the winding bottom mold 210 along its radial direction, and each includes multiple side plates 221 arranged sequentially and corresponding one-to-one along its circumference. The wound coil 300 is placed on the top surface of the winding bottom mold 210 and located between the two winding side molds 220. The fixed bracket 110 includes a rigid frame 111 and multiple fixed legs 113 corresponding one-to-one with multiple split-type fixed clamps 120. The multiple fixed legs 113 are respectively fixed to the rigid frame 111 and located directly below the rigid frame 111.

[0076] A portion of the side plates 221 corresponding to each winding side mold 220 in the winding mold 200 at preset positions are removed at intervals. Simultaneously, a corresponding split-type fixing clamp 120 is assembled on the outer surface of the coil 300 segment corresponding to a portion of the side plates 221, so that the split-type fixing clamp 120 is pressed against the two sides and two end faces of the coil 300. The assembled split-type fixing clamp 120 is then fixed to the corresponding fixing leg 113.

[0077] The remaining side plates 221 of each winding side mold 220 in the winding mold 200 at the preset position are removed one by one. At the same time, the corresponding split-type fixing clamps 120 are assembled on the outer surface of the coil 300 segment corresponding to the remaining side plates 221 in the coil 300, so that the split-type fixing clamps 120 are pressed against the two sides and two end faces of the coil 300. The assembled split-type fixing clamps 120 are fixed to the corresponding fixing legs 113.

[0078] After all the separate fixed clamps 120 are assembled to the coil 300 and fixed to the corresponding fixed legs 113, the winding bottom mold 210 is lowered and removed. The coil 300 is completely separated from the winding bottom mold 210, and the coil 300 is formed by multi-point synchronous clamping and fixing by the wrapping tooling 100.

[0079] The bottom mold 210 is used to support and place the completed stellarator three-dimensional superconducting coil 300, providing a bottom support reference for the coil 300. It carries the coil 300 to complete the transfer, the segmented removal of the side plate 221 and the step-by-step assembly process of the split-type fixed fixture 120, realizing the transition of the coil 300 from mold support to more than 100 points of clamping support of the winding tooling.

[0080] The winding side mold 220 is used to be set on both radial sides of the coil 300, and together with the winding bottom mold 210, it forms an annular cavity to accommodate the coil 300, which plays a temporary lateral limiting and protection role for the coil 300. The winding side mold 220 is composed of multiple side plates 221 arranged in the circumferential direction, which can be removed at intervals and in succession to make room for the batch assembly of the split fixed fixture 120, and realize the alternating connection of mold constraint and tooling clamping constraint.

[0081] The fixed support leg 113 is used to attach each of the split-type fixed clamps 120 one by one, bear the clamping load of the clamp and coil 300 and transfer it to the rigid frame 111, provide a stable installation reference for the split-type fixed clamps 120, support the independent disassembly and adjustment of the individual split-type fixed clamps 120, and ensure the stability of the multi-point synchronous clamping and fixing state of the coil 300.

[0082] It should be noted that, in the step of removing a portion of the side plates 221 corresponding to each winding side mold 220 in the winding mold 200 at preset positions, this application does not limit the specific number of the split-type fixing clamps 120 and the fixed legs 113, or which portion of the side plates 221 is removed. For example:

[0083] In one embodiment, the split-type fixing clamp 120 is configured as 15 independent split-type fixing clamps 120, from the first to the fifteenth. The fixing legs 113 are configured as 15 fixing legs 113 corresponding one-to-one with each of the split-type fixing clamps 120. The coils 30 corresponding to the first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteenth split-type fixing clamps are pre-removed. For each side plate 221 at position 0, after removing one side plate 221, the corresponding split-type fixing clamp is fixed to the coil 300. After completing the installation of this part of the split-type fixing clamp and the coil 300, this part of the split-type fixing clamp is connected to the corresponding fixing leg 113. Then, the remaining split-type fixing clamps are removed, and the installation of the remaining split-type fixing clamps and the coil 300 at the corresponding positions is completed in the same way. The installed remaining split-type fixing clamps are then connected to the corresponding fixing legs to complete the multi-point clamping and fixing of the coil 300.

[0084] In another embodiment, the split-type fixing clamp 120 is configured as 15 independent split-type fixing clamps 120, from the first to the fifteenth split-type fixing clamp. The fixing legs 113 are configured as 15 fixing legs 113 corresponding one-to-one with each of the split-type fixing clamps 120. The side plates 221 at the coil 300 positions corresponding to the first, fifth, ninth, thirteenth, and fifteenth split-type fixing clamps are pre-removed. Each time a side plate 221 is removed, the corresponding split-type fixing clamp is fixed to the coil 300. After completing the installation of this part of the split-type fixing clamps and the coil 300, this part of the split-type fixing clamps... Connect the corresponding fixed support leg 113; then remove the side plate 221 of the coil 300 position corresponding to the second, sixth, tenth, and fourteenth split-type fixing clamps, and complete the installation of the remaining split-type fixing clamps with the corresponding positions of the coil 300 in the same manner. Connect the installed remaining split-type fixing clamps with the corresponding fixing support leg. Finally, remove the remaining split-type fixing clamps and complete the installation of the remaining split-type fixing clamps with the corresponding positions of the coil 300 in the same manner. Connect the installed remaining split-type fixing clamps with the corresponding fixing support leg to complete the multi-point clamping and fixing of the coil 300.

[0085] Using the above technical solution, the winding mold 200 carrying the coil 300 is first transported to a preset position below the fixed bracket 110. Then, some side plates 221 are removed at intervals, and corresponding split-type fixed clamps 120 are simultaneously assembled and suspended to the fixed support leg 113. Subsequently, the remaining side plates 221 are removed one by one, and the remaining split-type fixed clamps 120 are added. After all clamps are assembled, the winding bottom mold 210 is lowered and removed. This arrangement adopts the mode of removing the side plates 221 in sections and simultaneously establishing tooling clamping constraints. The coil 300 is always effectively supported by the winding mold 200 or the split-type fixed clamps 120 throughout the entire replacement process. Furthermore, during the removal of the side plates 221, there will be no large-scale unconstrained suspended sections of the coil 300. There is no need to worry about the irregular three-dimensional coil 300 losing its limit and causing curved surface rebound or positional displacement. This avoids the deformation of the coil 300 affecting the subsequent ground insulation winding accuracy, thereby stably maintaining the original forming shape of the coil 300.

[0086] Based on the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil 300 provided in this application, the steps for assembling a single split-type solid-type fixture 120 include:

[0087] First, attach the lower profile clamp 1201 tightly to the corresponding positions on the lower end faces of the two end faces of the coil 300.

[0088] Next, fix the left clamping plate 1205 and the right clamping plate 1206 on the lower conforming clamping plate 1201, fix the upper clamping plate 1207 on the left clamping plate 1205 and the right clamping plate 1206, and fix the connecting plate 1208 on the upper clamping plate 1207.

[0089] Then, the upper contouring clamp 1204, the left contouring clamp 1202, and the right contouring clamp 1203 are installed on the upper end face of the two end faces and the corresponding positions of the two sides of the coil 300. The left clamping plate 1205 presses the left contouring clamp 1202 through multiple first clamping members 1209, the right clamping plate 1206 presses the right contouring clamp 1203 through multiple second clamping members 1211, and the upper clamping plate 1207 presses the upper contouring clamp 1204 through multiple third clamping members 1212, thus completing the assembly of the split-type fixed clamp 120 and achieving the shaping constraint of the local position of the coil 300 through the split-type fixed clamp 120.

[0090] Furthermore, in the step of fixing the assembled split-type fixed clamp 120 to the corresponding fixed leg 113, the connecting plate 1208 of the assembled split-type fixed clamp 120 is fixed to the corresponding fixed leg 113.

[0091] The contouring clamps are used to conform to the irregular curved surface contour of the matching coil 300. The lower contouring clamp 1201 is fitted and installed on the lower end face of the two end faces of the coil 300. The upper contouring clamp 1204, the left contouring clamp 1202 and the right contouring clamp 1203 respectively conform to the upper end face and the two side faces of the coil 300 end face. They form a full-coverage contouring limit from multiple directions of the outer surface of the coil 300, accurately match the local curved surface shape of the coil 300, realize the pre-positioning and shaping support of the local position of the coil 300, and avoid the problems of local suspension and poor fit during the clamping process of the coil 300.

[0092] The clamping plate is used to provide an assembly and installation benchmark for each contour clamp. Through the layered assembly structure of the left clamping plate 1205, the right clamping plate 1206 and the upper clamping plate 1207, the main clamping frame of the entire split-type fixed clamp 120 is formed, which respectively meets the clamping force requirements of the corresponding contour clamp, realizes the regular assembly and force transmission of the clamp structure, and cooperates with the upper connecting plate 1208 to complete the integrated fixation of the entire clamp, ensuring that the overall structure of the clamp is compact and the posture is stable.

[0093] The clamping components are used as adjustable compression locking components, respectively cooperating with each clamping plate to complete the compression and bonding of the contour clamping plates. The first clamping component 1209, the second clamping component 1211, and the third clamping component 1212 respectively compress and lock the left contour clamping plate 1202, the right contour clamping plate 1203, and the upper contour clamping plate 1204. The clamping force and bonding degree of each contour clamping plate on the surface of the coil 300 can be precisely adjusted, so that each contour clamping plate is tightly attached to the curved surface of the coil 300, eliminating assembly gaps, and stably realizing the rigid shaping constraint of the local area of ​​the coil 300, ensuring uniform and reliable clamping accuracy.

[0094] This application does not specifically limit the specific structure of each clamping plate and each clamping component. For example, in one embodiment, each clamping plate is a rigid plate structure with a fixed thickness, and each clamping component adopts a locking component of the same specification. The assembly clamping amount is consistent, the structure is simple and the assembly is convenient. It is suitable for clamping and shaping of coils with small dimensional deviations.

[0095] In another embodiment, each clamping component adopts an independently adjustable locking structure, which can individually adjust the clamping stroke and fit according to the local curvature difference of the coil 300, compensate for the forming error of the coil 300, ensure uniform and reliable clamping, and adapt to the precision fixing of irregular superconducting coils 300.

[0096] In another embodiment, the clamping plate adopts a high-strength thickened structure, the surface of the conformal clamping plate is provided with an insulating protective layer, and the clamping component is equipped with an elastic buffer structure, which can not only ensure the overall rigidity and shaping accuracy of the fixture, but also avoid hard squeezing damage to the surface insulation of the coil 300, making it suitable for the mass production of high-precision superconducting coils 300 with high insulation requirements.

[0097] Using the above technical solution, the lower end face of the coil 300 is first pre-fitted and positioned by the lower contour clamping plate 1201. Then, the left clamping plate 1205, the right clamping plate 1206, the upper clamping plate 1207 and the connecting plate 1208 are assembled step by step. Finally, contour clamping plates in all directions are assembled and locked by multiple sets of clamping components. This assembly method can establish the assembly benchmark step by step, effectively avoiding the alignment deviation and misfitting problems caused by one-time overall assembly. It enables each contour clamping plate to accurately correspond to the upper and lower end faces and radial sides of the coil 300, realizing the local multi-directional full-coverage contour constraint of the coil 300. At the same time, by independently adjusting the clamping amount of each contour clamping plate by the first, second and third clamping components, the assembly gap can be accurately eliminated, ensuring that the local curved surface of the coil 300 is uniformly stressed and regularly shaped.

[0098] Based on the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil 300 provided in this application, an installation groove is provided on the top of the winding bottom mold 210 corresponding to the position of each split solid-type clamp 120, and the installation groove is recessed from the top surface of the winding bottom mold 210 toward the bottom surface.

[0099] In the step of attaching the lower contour clamp 1201 to the corresponding position of the lower end face of the two end faces of the coil 300, the lower contour clamp 1201 is also installed in the mounting groove.

[0100] Using the above technical solution, a downwardly recessed mounting groove is opened at the position corresponding to the split-type fixed clamp 120 on the top of the winding bottom mold 210. During assembly, the lower contour clamp 1201 is placed inside the mounting groove. The mounting groove is used to achieve the pre-positioning and limiting of the lower contour clamp 1201, which can accurately lock the assembly position of the lower contour clamp 1201 and effectively prevent the clamp from slipping or misaligning in the early stage of assembly, thus establishing a reliable initial assembly benchmark for the entire split-type fixed clamp 120.

[0101] Based on the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil 300 provided in this application, when the total number of all the split-type solid-type clamps 120 arranged along the circumference of the coil 300 is m sets, where m is an integer greater than or equal to 2, all the split-type solid-type clamps 120 divide the coil 300 into m independent support sections. During the insulation wrapping process, when only a single set of split-type solid-type clamps 120 is removed, only the corresponding support section of the coil 300 is temporarily freed from constraint, while the remaining curved surfaces continue to be supported by multiple points.

[0102] It should be noted that when the total number of separate fixed clamps 120 is 15, the coil 300 is divided into 15 independent support sections. During the insulation wrapping process, only one set of separate fixed clamps 120 is removed. Only the support section corresponding to the coil 300 is temporarily freed from constraint, while the remaining 14 support sections continue to be limited and supported.

[0103] Using the above technical solution, when m sets of separate fixed clamps 120 (m is an integer greater than or equal to 2) are arranged along the circumference of the coil 300, all the separate fixed clamps 120 divide the coil 300 into m independent support sections. During the insulation wrapping operation, only one set of separate fixed clamps 120 is removed individually, and only the single support section corresponding to the clamp is temporarily unconstrained. The vast majority of the other curved surfaces of the coil 300 are still continuously supported by multiple points. This arrangement avoids large-scale unconstrained sections of the coil 300. During the passage of the insulation strip 400, the overall shape of the coil 300 can be effectively maintained, which greatly reduces the risk of the irregular three-dimensional coil 300 rebounding, twisting, and shifting. It also prevents the deformation of the coil 300 from causing wrinkles or gaps in the insulation strip 400, and ensures the continuity and forming quality of the insulation layer to ground.

[0104] Based on the multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil 300 provided in this application, after the coil 300 has completed all ground insulation wrapping, the individual solid-type clamps 120 are disconnected from the multiple fixed legs 113 in sequence, and then all the individual solid-type clamps 120 on the coil 300 are removed in batches to complete the insulation wrapping of the three-dimensional superconducting coil 300.

[0105] This application does not limit the specific material of the insulating tape 400 used for insulating wrapping, for example:

[0106] In one embodiment, the insulating tape 400 is made of polyimide film composite tape, which has excellent low temperature resistance, high breakdown voltage and good mechanical strength, and is suitable for the low temperature working environment of the superconducting coil 300, and can effectively guarantee the electrical insulation performance for a long time.

[0107] In another embodiment, the insulating tape 400 is made of glass cloth impregnated composite tape, which has strong tear resistance and radiation resistance, good structural stability, and is suitable for the insulation protection of coil 300 under strong radiation conditions inside the fusion device.

[0108] By adopting the above technical solution, after the coil 300 is completely wrapped with insulation to ground, the connection between each split-type fixed clamp 120 and the fixed support leg 113 is first disconnected in sequence, and then all the split-type fixed clamps 120 on the outside of the coil 300 are removed in batches. Finally, the finished coil 300 is taken out. This can avoid the coil 300 losing multi-point constraint and undergoing overall deformation due to the removal of all clamps at one time. During the removal process, the coil 300 can always be kept stable by the clamps that have not been removed, reducing the risk of cracking and falling off of the insulation layer due to sudden stress.

[0109] Based on the multi-point solid-type ground insulation wrapping method for the three-dimensional superconducting coil 300 of the stellarator provided in this application, in the beginning and end stages of the ground insulation wrapping of the coil 300, the middle gap between two adjacent sets of separate solid-type clamps 120 is used as the channel for the insulation strip 400 to enter and exit.

[0110] Using the above technical solution, the gap area remains open at all times, and there is no need to temporarily disassemble the clamps. The introduction and termination of the insulation tape 400 lead do not require disturbing the clamping state of any set of clamps. The coil 300 maintains complete multi-point constraint throughout the process and will not cause shape deviation due to the disassembly and assembly of clamps.

[0111] This application also provides a multi-point solid-type ground insulation wrapping system suitable for a stellarator three-dimensional superconducting coil 300, including the above-mentioned multi-point solid-type ground insulation wrapping method suitable for a stellarator three-dimensional superconducting coil 300, and further including: wrapping fixture 100 and insulation tape delivery mechanism (not shown in the figure).

[0112] The wrapping fixture 100 includes a fixed bracket 110 and multiple split-type fixing clamps 120. The multiple split-type fixing clamps 120 are respectively fixed to the fixed bracket 110 and are used to be spaced apart on the coil 300 along the circumference of the coil 300. Each split-type fixing clamp 120 presses against two sides and two end faces of the coil 300.

[0113] The insulating tape release mechanism is used to continuously release the insulating tape 400 so that the insulating tape 400 continuously wraps around the outer surface of the coil 300.

[0114] This application does not specifically limit the overall structural form of the tooling 100 or the rigid frame 111 structure, for example:

[0115] In one embodiment, the rigid frame 111 of the wrapping fixture 100 adopts an integral frame structure, which is integrally formed without splicing gaps. It has strong structural rigidity, uniform stress, and minimal deformation. The structure is simple and has high assembly precision. It is suitable for insulation wrapping operations of superconducting coils 300 with standard specifications and small dimensional deviations, and can provide a stable and reliable overall support benchmark for the entire wrapping process.

[0116] In another embodiment, the rigid frame 111 surrounding the tooling 100 adopts a modular splicing frame structure, which is assembled from multiple frame units that can be disassembled. The tooling has strong overall adaptability and is convenient for disassembly, assembly and transportation. It can be adapted to the insulation wrapping processing of stellarator three-dimensional superconducting coils 300 of different sizes and models, greatly improving the tooling's universal adaptability.

[0117] The above technical solution involves a winding fixture 100 and an insulating tape feeding mechanism working together. The winding fixture 100 uses a fixed bracket 110 to fix a multi-component, three-dimensional fixed clamp 120, which clamps the coil 300 at multiple points along the circumference, maintaining the geometric stability of the coil 300 throughout the insulation winding process. The insulating tape feeding mechanism continuously supplies the insulating tape 400, and continuous winding can be completed with the help of the clamp gaps. This arrangement eliminates the need for a large, enclosed mold to be hoisted as a whole for insulation winding, and allows for the separate disassembly of the single-component, three-dimensional fixed clamp 120 to allow the insulating tape 400 to pass through, effectively avoiding insulation wrinkles and damage caused by coil 300 deformation, and improving the coating quality and preparation efficiency of the ground insulation layer of the stellarator's three-dimensional superconducting coil 300.

[0118] Based on the multi-point solid-type ground insulation wrapping system for a stellarator three-dimensional superconducting coil 300 provided in this application, the fixed bracket 110 includes a rigid frame 111, multiple fixed legs 113 and a support structure supporting the rigid frame 111. The multiple fixed legs 113 are respectively fixedly connected to the corresponding positions of the rigid frame 111. Multiple split-type solid-type clamps 120 correspond one-to-one with the multiple fixed legs 113, and each split-type solid-type clamp 120 is fixed on the corresponding fixed leg 113.

[0119] It should be noted that the support structure may also include multiple support columns 112. The multiple support columns 112 are arranged at intervals along the bottom and circumference of the rigid frame 111, providing all-round support for the entire rigid frame 111, effectively dispersing the overall load of the tooling, and avoiding uneven stress and slight deformation of the rigid frame 111 during fixture assembly, coil 300 fixing and insulation winding operations, thus ensuring the support stability and assembly reference accuracy of the entire winding tooling 100.

[0120] The number of support columns 112 can be an integer greater than or equal to 2, and this application does not impose further limitations on it.

[0121] Using the above technical solution, the fixed bracket 110 is equipped with a rigid frame 111, multiple fixed legs 113, and a support structure supporting the rigid frame 111. The split-type fixed clamp 120 is suspended and installed on the rigid frame 111 through corresponding fixed legs 113, so that each clamp can be independently positioned and carried. The support structure is equipped with multiple support columns 112 arranged circumferentially along the bottom of the rigid frame 111, which provides all-round support for the rigid frame 111. This can evenly distribute the load brought by the coil 300 and the clamp, and improve the stress distribution of the frame. This arrangement can effectively suppress the torsion and slight deformation of the rigid frame 111 due to off-center load under the conditions of clamp assembly, coil 300 clamping and insulation wrapping. It can maintain the original assembly datum of the rigid frame 111 unchanged for a long time and ensure the stability of the spatial position accuracy of each fixed leg 113.

[0122] The multi-point solid-type ground insulation winding system for a stellarator three-dimensional superconducting coil 300 provided in this application also includes a winding mold 200 and a transfer mechanism (not shown in the figure).

[0123] The winding mold 200 includes a winding bottom mold 210 that is annular and two winding side molds 220. The two winding side molds 220 are respectively fixedly disposed on both sides of the winding bottom mold 210 along its radial direction, and together with the winding bottom mold 210 form a cavity for accommodating the coil 300. Each winding side mold 220 includes a plurality of side plates 221 arranged sequentially along its circumference.

[0124] The transfer mechanism is configured to place the winding mold 200 with the coil 300 wound on it at a preset position below the multiple fixed legs 113 of the fixed bracket 110, and lower and move the winding bottom mold 210 so that the coil 300 is completely detached from the winding bottom mold 210.

[0125] By adopting the above technical solution, the winding mold 200 and the transfer mechanism are configured to cooperate with each other. The annular winding bottom mold 210 and the two side winding side molds 220 together form a cavity to accommodate the coil 300. After the coil 300 is wound, it can be directly transferred in the winding mold 200. The winding side mold 220 is composed of multiple side plates 221 in sections, which can be disassembled in sections to leave space for fixture assembly. The transfer mechanism is responsible for accurately transporting the winding mold 200 carrying the coil 300 to the preset station below the fixed bracket 110, and can also complete the lowering and removal of the winding bottom mold 210. This arrangement can realize the integrated transfer of the coil 300 from the winding station to the insulation wrapping station, without the need to demold and transfer the coil 300 separately, reducing the deformation caused by multiple handling of the coil 300.

[0126] 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 application from the content disclosed in this specification. Although the description of this application is presented in conjunction with preferred embodiments, this does not mean that the features of this invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details are included in the above description, and this application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, 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 application can be combined with each other.

[0127] 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.

[0128] In the description of this application, 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 in which the product of the invention is usually placed when in use. They are only used to facilitate the description of this application and to simplify 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 this application.

[0129] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0130] In the description of this application, it should also be noted that, unless otherwise expressly 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 mechanical connection or an electrical 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 application based on the specific circumstances.

[0131] Although this application 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 application in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the application 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 this application.

Claims

1. A method for multi-point solid-state ground-insulating wrapping of a three-dimensional superconducting coil for a stellarator, the coil being annular and having: two sides opposite to each other in its radial direction and two end faces opposite to each other in its axial direction, characterized in that, The wrapping method includes: The coil is formed into a multi-point synchronous clamping and fixing shape by the wrapping fixture as a whole; wherein, the wrapping fixture includes a fixed bracket and a plurality of split-type fixing clamps respectively fixed to the fixed bracket, all of the split-type fixing clamps of the wrapping fixture are arranged at intervals along the circumference of the coil on the coil, and each split-type fixing clamp presses against the two sides and the two end faces of the coil; The gap between two adjacent split-type fixed clamps is selected as the starting area for insulation wrapping. Starting from the starting area, the insulating tape is continuously wrapped around the outer surface of the coil along the circumference of the coil. During the wrapping process, when the insulating tape reaches the position of the corresponding split-type fixed clamp, only that split-type fixed clamp is removed, while all other split-type fixed clamps remain in a clamped and limited state. After the insulating tape has completely passed through the section blocked by the split-type fixed clamp, the clamp is immediately reset and locked.

2. The multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil as described in claim 1, characterized in that, Before the step of forming a multi-point synchronous clamping and fixing pattern for the coil by wrapping the entire tooling, the method further includes: A winding mold with the coil wound on it is placed at a predetermined position below multiple fixed legs of a fixed bracket; wherein, the winding mold includes a winding bottom mold and two winding side molds, the two winding side molds are respectively fixedly disposed on both sides of the winding bottom mold along its radial direction, and each includes multiple side plates arranged sequentially and corresponding one-to-one along its circumference, the wound coil is placed on the top surface of the winding bottom mold and located between the two winding side molds; the fixed bracket includes a rigid frame and multiple fixed legs corresponding one-to-one with multiple split-type fixed clamps, the multiple fixed legs are respectively fixed to the rigid frame and located directly below the rigid frame; A portion of the side plates corresponding to each winding side plate in the winding mold at preset positions are removed at intervals. Simultaneously, the corresponding split-type fixing clamp is assembled on the outer surface of the coil segment corresponding to the portion of the side plates in the coil, so that the split-type fixing clamp is pressed against the two sides and the two end faces of the coil. The assembled split-type fixing clamp is then fixed to the corresponding fixing leg. The remaining side plates of each winding side mold in the winding mold at the preset position are removed one by one. At the same time, the corresponding split-type fixing clamp is assembled on the outer surface of the coil segment corresponding to the remaining side plate in the coil, so that the split-type fixing clamp is pressed against the two sides and the two end faces of the coil. The assembled split-type fixing clamp is fixed to the corresponding fixing leg. After all the separate fixing fixtures are assembled to the coil and fixed to the corresponding fixing legs, the winding bottom mold is lowered and removed so that the coil is completely separated from the winding bottom mold. The coil is then clamped and fixed at multiple points synchronously by the wrapping fixture as a whole.

3. The multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil as described in claim 2, characterized in that, The steps of assembling a single one of the aforementioned split-type fixed fixtures include: First, attach the lower conforming clamp tightly to the corresponding position of the lower end face of the two end faces of the coil; Next, fix the left and right clamping plates on the lower conforming clamping plate, fix the upper clamping plate on the left and right clamping plates, and fix the connecting plate on the upper clamping plate. Then, the upper conforming clamp, the left conforming clamp, and the right conforming clamp are installed on the upper end face of the two end faces and the corresponding positions of the two sides of the coil. The left clamping plate is pressed by multiple first clamping members, the right clamping plate is pressed by multiple second clamping members, and the upper clamping plate is pressed by multiple third clamping members, thus completing the assembly of the split-type fixed clamp and achieving the shaping constraint of the local position of the coil through the split-type fixed clamp. Furthermore, in the step of fixing the assembled split-type fixed clamp to the corresponding fixed leg, the connecting plate of the assembled split-type fixed clamp is fixed to the corresponding fixed leg.

4. The multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil as described in claim 3, characterized in that, The top of the winding bottom mold is provided with a mounting groove corresponding to the position of each of the split-type fixed clamps. The mounting groove is recessed from the top surface of the winding bottom mold toward the bottom surface. In the step of attaching the lower contour clamp to the corresponding position of the lower end face of the two end faces of the coil, the lower contour clamp is also installed in the mounting groove.

5. The multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil as described in claim 1, characterized in that, When the total number of all the split-type fixed clamps arranged along the circumference of the coil is m sets, where m is an integer greater than or equal to 2, all the split-type fixed clamps divide the coil into m independent support sections. During the insulation wrapping process, when only one set of the split-type fixed clamps is removed, only the support section corresponding to the coil is temporarily freed from constraint, while the remaining curved surfaces continue to be supported by multiple points.

6. The multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil as described in claim 2, characterized in that, After the coil has completed all insulation wrapping to ground, the split-type fixed clamps are disconnected from the multiple fixed legs in sequence, and then all the split-type fixed clamps on the coil are removed in batches to take out the coil with the insulation wrapped completed.

7. The multi-point solid-type ground insulation wrapping method for a stellarator three-dimensional superconducting coil as described in any one of claims 1 to 6, characterized in that, At the beginning and end of the coil-to-ground insulation wrapping stage, the middle gap between two adjacent sets of the split-type fixed clamps is used as the channel for the insulation tape to enter and exit.

8. A multi-point solid-type ground-insulating wrapping system for a stellarator three-dimensional superconducting coil, characterized in that, The wrapping system is applicable to the multi-point solid-type ground insulation wrapping method for the three-dimensional superconducting coil of a stellarator according to any one of claims 1 to 7, wherein the wrapping system comprises: The wrapping fixture includes a fixed bracket and multiple split-type fixing clamps. The multiple split-type fixing clamps are respectively fixed to the fixed bracket and are used to be spaced apart on the coil along the circumference of the coil. Each split-type fixing clamp is pressed against two sides and two end faces of the coil. An insulating tape release mechanism is provided for continuously releasing the insulating tape so that the insulating tape continuously wraps around the outer surface of the coil.

9. The multi-point solid-type ground-insulating wrapping system for a stellarator three-dimensional superconducting coil according to claim 8, characterized in that, The fixed support includes a rigid frame, multiple fixed legs, and a support structure supporting the rigid frame. The multiple fixed legs are respectively fixedly connected to corresponding positions of the rigid frame. The multiple split-type fixed clamps correspond one-to-one with the multiple fixed legs, and each split-type fixed clamp is fixed to the corresponding fixed leg.

10. The multi-point solid-type ground-insulating wrapping system for a stellarator three-dimensional superconducting coil according to claim 8 or 9, characterized in that, The wrapping system also includes: A winding mold, comprising a winding bottom mold, both of which are annular, and two winding side molds, wherein the two winding side molds are respectively fixedly disposed on both sides of the winding bottom mold along its radial direction, and together with the winding bottom mold form a cavity for accommodating the coil, and each winding side mold includes a plurality of side plates arranged sequentially along its circumference. The transfer mechanism is configured to place the winding mold with the coil wound on it at a preset position under a plurality of fixed legs of a fixed bracket, and lower and move the winding bottom mold out so that the coil is completely detached from the winding bottom mold.

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