Star simulator magnet

Abstract

The invention provides a star imitator magnet. The star imitator magnet comprises a connecting ring, a plurality of coils and a base. The plurality of coils are annularly arranged on the periphery of the connecting ring at intervals, and the outer wall surface of each coil is fixedly connected with the outer wall surface of the connecting ring; a connecting assembly is connected between the opposite surfaces of any two adjacent coils, and the two ends of the connecting assembly are fixedly connected with the two opposite surfaces of the two coils respectively. The outer wall face of each coil and the top end of the base in the height direction are connected with a supporting assembly. Each supporting assembly comprises a sliding supporting piece and a rotating supporting piece, and the sliding supporting pieces are slidably connected to the top end of the base in the radial direction of the connecting ring. The rotating supporting piece is fixedly connected with the corresponding outer wall face of the coil and can rotate around the first axis relative to the sliding supporting piece. The star imitator magnet has enough supporting strength during operation so as to maintain the stability of the whole star imitator magnet structure, and the star imitator magnet is easy to install and convenient to maintain in the later period.

Description

Technical Field

[0001] The present invention relates to the technical field of superconductors, and in particular to a stellarator magnet. Background Art

[0002] A stellarator uses an external magnetic field to confine high-temperature plasma. Its core principle is to create a closed "magnetic cage" through the three-dimensional twisted magnetic field generated by external coils, thereby confining the high-temperature plasma (temperatures can reach hundreds of millions of degrees Celsius) and maintaining its stability to achieve sustained nuclear fusion reactions. Compared to tokamaks, which rely on plasma current to generate part of the magnetic field, stellarators generate their magnetic field entirely from external coils. This offers significant advantages, including the lack of current drive, high plasma confinement stability, and great potential for steady-state operation, making it a promising candidate for the steady-state operation of future fusion reactors.

[0003] Superconducting magnets are one of the most critical components in stellarators, and their performance directly determines the strength, precision, and stability of the magnetic field. To generate complex three-dimensional twisted magnetic cages, stellarator superconducting magnets are typically designed as modular, asymmetric structures, with each module having a unique geometry, spatial position, and current parameters. These magnets must operate at extremely low temperatures (typically in the 4.2K liquid helium region) to achieve a superconducting state. However, this specialized design and operating environment presents multiple challenges for the engineering implementation of the magnet system, with the support structure being a crucial element in ensuring the stable operation of the superconducting magnets.

[0004] Because superconducting magnets typically operate under extreme conditions, the requirements for their support structures are further increased. Specifically, superconducting magnets must be cooled from room temperature (300K) to an ultra-low temperature of 4K during operation. During this process, the magnet material undergoes radial cold contraction. If the support structure is unable to relieve this displacement, significant secondary stresses will be generated, directly leading to deformation of the magnet structure and damage to the insulation layer. Furthermore, during operation, high currents flow through the stellarator magnets, subjecting them to significant electromagnetic forces, including radial outward and tangential forces, within the strong magnetic fields generated by the magnets themselves and adjacent coils. For modular, asymmetric magnets, the electromagnetic force distribution is complex and the forces acting on each module are uneven. If the support structure cannot effectively transfer the load to the device itself, the magnets can become unstable due to unbalanced forces. Furthermore, the modular design of stellarator magnets results in complex spatial postures and connection relationships between the modules, requiring extremely high relative positional accuracy between the magnets. If the support structure cannot achieve high-precision positioning, magnetic field distortion will result, affecting plasma confinement performance.

[0005] Therefore, due to the inadequacy of the supporting structure design, the stellarators in the existing technology often have problems such as structural cracks caused by cold contraction of the magnets and module displacement caused by electromagnetic forces, which limits the improvement of magnetic field strength and operating time. Summary of the Invention

[0006] The purpose of the present invention is to solve the problem in the prior art that the stellarator easily has an abnormal magnet structure due to insufficient support structure design.

[0007] To solve the above problems, an embodiment of the present invention discloses a stellarator magnet, comprising: a connecting ring; a plurality of coils, the plurality of coils including planar annular coils and / or non-planar annular coils, and arranged in an annular pattern at intervals on the outer circumference of the connecting ring, and the outer wall surface of each coil is fixedly connected to the outer wall surface of the connecting ring; any two adjacent coils are arranged relative to each other along a surface in the thickness direction, and a connecting component is connected between the opposing surfaces of any two adjacent coils, and the two ends of the connecting component are respectively fixedly connected to the two opposing surfaces of the two coils; a base, the bottom end of the base along the height direction is used to support the support surface, the outer wall surface of each coil is connected to the top end of the base along the height direction thereof with a supporting component, so that the base supports the corresponding coil through each supporting component; each supporting component includes a sliding support member and a rotating support member arranged on the sliding support member, the sliding support member is slidably connected to the top end of the base along the radial direction of the connecting ring, so that the sliding support member can move relative to the base within a second distance threshold range; the rotating support member is fixedly connected to the outer wall surface of the corresponding coil and can rotate about a first axis relative to the sliding support member; the first axis is perpendicular to the radial and axial directions of the connecting ring, and the axial direction of the connecting ring is parallel to the height direction of the base.

[0008] The above solution effectively supports the huge centripetal force generated by the magnet during operation by setting up a connecting ring, ensuring the structural stability of the stellarator magnet during operation. By setting up a connecting assembly between two adjacent coils, multiple coils are connected to form a whole, which increases the rigidity of the entire stellarator magnet and can effectively resist deformation. The shrinkage deformation of the stellarator magnet at low temperatures and the radial deformation during operation are released by the supporting assembly, thereby reducing the stress of the support structure of the stellarator magnet and ensuring the stability of the support structure. Finally, the superconducting magnet is supported on the ground by the base.

[0009] According to another specific embodiment of the present invention, the stellarator magnet disclosed in the embodiment of the present invention has a plurality of connecting blocks fixedly provided on the outer wall surface of the connecting ring, the plurality of connecting blocks are arranged at intervals along the circumference of the connecting ring, and the plurality of connecting blocks correspond one-to-one to the plurality of coils, and each connecting block is fixedly connected to the corresponding coil; the connecting ring includes a plurality of arc-shaped connecting plates connected end to end along the circumference of the connecting ring, and the opposite ends of any two adjacent arc-shaped connecting plates are detachably fixedly connected.

[0010] The above solution, by connecting multiple curved connecting plates to form a connecting ring, makes the manufacturing, transportation, and installation of the connecting ring more convenient. Furthermore, connecting multiple curved connecting plates to form a connecting ring allows for flexible adjustment of the connecting ring diameter or number of coils as needed, thus improving the adaptability of the device.

[0011] According to another specific embodiment of the present invention, in the stellarator magnet disclosed in the embodiment of the present invention, a first connecting flange and a second connecting flange are fixedly provided at both ends of the inner wall surface of each arc-shaped connecting plate, and in any two adjacent arc-shaped connecting plates, the first connecting flange of one arc-shaped connecting plate is fixedly connected to the second connecting flange of the other arc-shaped connecting plate to fix the two arc-shaped connecting plates together; the inner wall surface of each arc-shaped connecting plate is provided with at least one reinforcing plate, and each reinforcing plate extends along the circumference of the connecting ring, and at least one reinforcing plate includes a first reinforcing plate, a second reinforcing plate and a third reinforcing plate respectively located at the upper part, the middle part and the lower part of the arc-shaped connecting plate, and the first reinforcing plate, the second reinforcing plate and the third reinforcing plate are all provided with reinforcing ribs.

[0012] The above solution, by providing connecting flanges, reinforcing plates, and reinforcing ribs, can effectively improve the connection strength and overall rigidity of the curved connecting plates. The connecting flanges provide a more secure connection between adjacent curved connecting plates, while the combination of reinforcing plates and reinforcing ribs significantly enhances the curved connecting plates' resistance to deformation.

[0013] According to another specific embodiment of the present invention, in the stellarator magnet disclosed in the embodiment of the present invention, a first wedge-shaped half-groove and a second wedge-shaped half-groove are respectively provided at both ends of the inner wall surface of each arc-shaped connecting plate, and in any two adjacent arc-shaped connecting plates, the first wedge-shaped half-groove of one arc-shaped connecting plate is arranged opposite to the second wedge-shaped half-groove of the other arc-shaped connecting plate, so that the oppositely arranged first wedge-shaped half-groove and second wedge-shaped half-groove form a wedge-shaped fixing groove; a shear-resistant component is provided in the wedge-shaped fixing groove, the shear-resistant component includes a screw, a nut, and a wedge-shaped block adapted to the wedge-shaped fixing groove, a connecting hole is opened in the middle of a side of the wedge block away from the wedge-shaped fixing groove, the screw is fixed in the connecting hole via the nut, and the outer wall surface of the wedge block is fitted with the inner wall surface of the first wedge-shaped half-groove and the second wedge-shaped half-groove, so that the two adjacent arc-shaped connecting plates are aligned.

[0014] This solution, through the coordination of the wedge-shaped retaining grooves and shear-resistant components, achieves precise alignment and reliable connection of adjacent curved connecting plates. The tight fit of the wedge blocks within the wedge-shaped retaining grooves effectively transmits shear forces and prevents relative displacement of the connecting plates. The tightening action of the screw and nut further enhances the stability of the connection while facilitating disassembly and maintenance.

[0015] According to another specific embodiment of the present invention, the stellarator magnet disclosed in the embodiment of the present invention, the connecting component includes a first fixed seat and a second fixed seat arranged opposite to each other, and a connecting plate; the ends of the first fixed seat and the second fixed seat close to each other are respectively provided with a first groove and a second groove, one end of the connecting plate is arranged in the first groove and abuts against the inner circumferential wall of the first groove, and the other end of the connecting plate is arranged in the second groove and abuts against the inner circumferential wall of the second groove; the ends of the first fixed seat and the second fixed seat away from each other are respectively fixedly connected to the two opposite surfaces of the two coils, and there is a gap between the opposite ends of the first fixed seat and the second fixed seat.

[0016] The above solution effectively resists coil displacement through the arrangement of the connecting components, preventing excessive stress. Furthermore, the multiple connecting components arranged circumferentially form a stable force transmission path, ensuring the overall rigidity of the magnet structure.

[0017] According to another specific embodiment of the present invention, the stellarator magnet disclosed in the embodiment of the present invention has a plurality of threaded holes spaced apart at both ends of the connecting plate, each threaded hole extending along the thickness direction of the connecting plate, and a pre-tightening member provided in each threaded hole, which is threadedly connected to the threaded hole, and the pre-tightening member located at one end of the connecting plate can press one end of the connecting plate against the inner circumferential wall of the first groove, and the pre-tightening member located at the other end of the connecting plate can press the other end of the connecting plate against the inner circumferential wall of the second groove; the cross-section of the connecting plate along the circumference of the connecting ring is wedge-shaped, and the first groove and the second groove are both set to: wedge-shaped grooves adapted to the connecting plate; a plurality of connecting components are connected between any two adjacent coils, and the plurality of connecting components are spaced apart along the circumference of the coil.

[0018] With the above solution, the contact pressure can be maintained through the wedge-shaped fit between the groove and the connecting plate, and the pre-tightening member ensures the connection stability.

[0019] According to another specific embodiment of the present invention, the stellarator magnet disclosed in the embodiment of the present invention, the sliding support and the rotating support are rotatably connected through a shaft assembly; the rotating support includes a pillar and a rotating plate, the top of the pillar is fixedly connected to the corresponding coil, the rotating plate is fixedly connected to the bottom end of the pillar, and the rotating plate has a first axial hole running through its thickness direction; the sliding support includes a bottom plate, and a first vertical plate and a second vertical plate arranged relatively spaced apart, the bottom plate is connected to the top end of the base along the radial direction of the connecting ring, the bottom ends of the first vertical plate and the second vertical plate are fixedly arranged on the bottom plate, and the first vertical plate and the second vertical plate are both provided with a second axial hole corresponding to the first axial hole, the rotating plate is located between the first vertical plate and the second vertical plate, and the rotating shaft assembly passes through the first axial hole and the second axial hole to rotatably connect the sliding support and the rotating support together; wherein, the axis of the first axial hole and the second axial hole constitute the first axis.

[0020] With this solution, the rotating shaft assembly provides a rotatable connection between the sliding support and the rotating support, allowing the rotating support to rotate relative to the sliding support about the first axis. Simultaneously, the sliding support can slide radially along the connecting ring. The coordination between the sliding support and the rotating support can meet the coil's radial and axial displacement requirements.

[0021] According to another specific embodiment of the present invention, the stellarator magnet disclosed in the embodiment of the present invention, the rotating shaft assembly includes a connecting shaft, the connecting shaft is configured as a stepped shaft, and includes a first shaft segment, a second shaft segment and a third shaft segment which are sequentially connected along the axial direction thereof and whose diameters gradually decrease, the end face of the first shaft segment close to the second shaft segment abuts against the side of the first vertical plate away from the rotating plate, the second shaft segment is passed through the second shaft hole of the first vertical plate, and the third shaft segment is passed through the first shaft hole of the rotating plate and the second shaft hole of the second vertical plate; the rotating shaft assembly also includes a first sleeve, a second sleeve and a fixing ring, the first sleeve, the second sleeve and the fixing ring are respectively sleeved on the third shaft segment in the connecting shaft The outer wall surface of the first sleeve is abutted in sequence in the axial direction of the connecting shaft, and an end surface of the first sleeve away from the second sleeve abuts against the end surface of the second shaft segment close to the third shaft segment; in the radial direction of the connecting shaft, the first sleeve is pressed between the outer wall surface of the third shaft segment and the inner wall surface of the first shaft hole, and the second sleeve is pressed between the outer wall surface of the third shaft segment and the inner wall surface of the second shaft hole in the second vertical plate; wherein, the first shaft hole of the rotating plate is configured as a stepped hole, and includes a first hole section and a second hole section which are sequentially connected along its axial direction and whose diameters gradually decrease; the first sleeve includes a first cylinder, a second cylinder and a third cylinder which are sequentially connected along its axial direction, and the second cylinder protrudes from the first cylinder. The outer wall surface of the first cylinder and the outer wall surface of the third cylinder, an end surface of the first cylinder away from the second cylinder abuts against the end surface of the second shaft segment close to the third shaft segment, and an end surface of the third cylinder away from the second cylinder abuts against the second sleeve; the outer wall surface of the second cylinder abuts against the inner wall surface of the first hole segment, and the outer wall surface of the third cylinder abuts against the inner wall surface of the second hole segment; the rotating shaft assembly also includes a clamping ring, the clamping ring is sleeved on the outer wall surface of the first cylinder in the first sleeve, and includes a first clamping part and a second clamping part connected in sequence along its axial direction, the first clamping part protrudes from the outer wall surface of the second clamping part, and the end surface of the first clamping part close to the second clamping part abuts against the rotating plate close to the first The end face of a vertical plate, the second clamping part is pressed between the outer wall surface of the first cylinder and the inner wall surface of the first hole section in the radial direction of the connecting shaft, and the first clamping part is fixed to the rotating plate by a fastener, so that the end face of the second clamping part away from the first clamping part is pressed against the end face of the second cylinder close to the first cylinder, and the end face of the second cylinder away from the first cylinder is pressed against the end face of the first hole section close to the second hole section; the outer wall surface of the second sleeve abuts against the inner wall surface of the second axial hole in the second vertical plate, and a protrusion is provided on the outer wall surface of one end of the second sleeve away from the first sleeve, and in the axial direction of the connecting shaft, the protrusion is pressed between the fixing ring and the side of the second vertical plate away from the rotating plate.

[0022] By adopting the above scheme, by setting a stepped shaft and a stepped hole, and cooperating with the first sleeve, the second sleeve and the clamping ring, the load-bearing capacity and stability of the rotating shaft assembly can be effectively improved, and loosening or wear caused by rotation or sliding can be avoided. At the same time, a stable and reliable rotation connection between the rotating support and the sliding support is also achieved.

[0023] According to another specific embodiment of the present invention, the stellarator magnet disclosed in the embodiment of the present invention has a connecting shaft that is a stud, a fastener that is a screw, and a fixing ring that is a nut; a fixing component is provided at the top of the base corresponding to the position of the sliding support; the fixing component includes a fixing plate and a pressure plate, one side of the fixing plate is fixedly connected to the top of the base, and the other side is provided with a guide rail, and the bottom plate is slidably connected to the guide rail; the pressure plate is step-shaped, and the bottom end of the pressure plate is fixedly connected to the fixing plate, the top end of the pressure plate is located on the side of the bottom plate away from the fixing plate, and a space for the bottom plate to slide is formed between the pressure plate and the fixing plate.

[0024] With the above solution, the stepped design of the pressure plate can limit the displacement of the base plate in the guide rail and guide the sliding of the base plate, while also retaining sufficient sliding space.

[0025] According to another specific embodiment of the present invention, the stellarator magnet disclosed in the embodiment of the present invention has a base including a support beam and a plurality of support columns, the support beam extends along the circumferential direction of the connecting ring, and the plurality of support columns are arranged at intervals along the extension direction of the support beam, the top end of each support column is fixedly arranged on the lower side of the support beam along its height direction, and the bottom end of each support column is used to support the supporting surface, wherein the upper side of the support beam along its height direction constitutes the top end of the base.

[0026] This solution, by extending the support beams along the circumference of the connecting ring, evenly transmits the centripetal force generated by the coils to each support column, thus avoiding localized stress concentration. Furthermore, the multiple support columns enhance the overall stability of the base, preventing structural collapse due to single-point failure.

[0027] The beneficial effects of the present invention are:

[0028] The stellarator magnet provided by the present application effectively bears the huge centripetal force generated by the magnet during operation through the setting of the connecting ring, thereby ensuring the structural stability of the stellarator magnet during operation. By arranging a connecting assembly between two adjacent coils, multiple coils are connected to form a whole, thereby increasing the rigidity of the entire stellarator magnet and effectively resisting deformation. The shrinkage deformation of the stellarator magnet produced at low temperatures and the radial deformation during operation are released by the supporting assembly, thereby reducing the stress of the support structure of the stellarator magnet and ensuring the stability of the support structure. Finally, the superconducting magnet is supported on the ground by the base. The present application enables the stellarator magnet to have sufficient support strength during operation to maintain the stability of the entire stellarator magnet structure, and is simple to install and convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 1 is a schematic structural diagram of a stellarator magnet provided by an embodiment of the present invention;

[0030] Figure 2 1 is a schematic structural diagram of a connecting ring in a stellarator magnet provided by an embodiment of the present invention;

[0031] Figure 3 This is a partial enlarged view of a connecting ring in a stellarator magnet provided by an embodiment of the present invention;

[0032] Figure 4 1 is a schematic structural diagram of a connection assembly in a stellarator magnet provided by an embodiment of the present invention;

[0033] Figure 5 1 is a schematic structural diagram of a first fixing seat and a connecting block of a connecting assembly in a stellarator magnet provided by an embodiment of the present invention;

[0034] Figure 6 1 is a schematic structural diagram of a support assembly in a stellarator magnet provided by an embodiment of the present invention;

[0035] Figure 7 1 is a schematic structural diagram of a rotating shaft assembly in a stellarator magnet provided by an embodiment of the present invention;

[0036] Figure 8 It is a structural schematic diagram of the base in the stellarator magnet provided by an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Connecting ring; 11. Connecting block; 12. Arc-shaped connecting plate; 13. First connecting flange; 14. Second connecting flange; 15. Reinforcing plate; 16. Reinforcing rib; 17. Screw; 18. Nut; 19. Wedge block; 2. Coil; 3. Connecting assembly; 31. First fixed seat; 32. Second fixed seat; 33. Connecting plate; 34. Preload; 4. Base; 41. Fixed plate; 42. Pressing plate; 43. Support beam; 44. Support column; 5. Support assembly; 51. Sliding support; 511. Bottom plate; 512. First vertical plate; 513. Second vertical plate; 52. Rotating support; 521. Pillar; 522. Rotating plate; 6. Rotating shaft assembly; 61. Connecting shaft; 62. First sleeve; 63. Second sleeve; 64. Fixed ring; 65. Pressing ring; 66. Fastener. DETAILED DESCRIPTION

[0039] In order to solve the problem that the magnet structure of the stellarator in the prior art is easily abnormal due to the insufficient support structure design, this embodiment provides a stellarator magnet. Figure 1The stellarator magnet comprises a connecting ring 1 and a plurality of coils 2. The plurality of coils 2 include planar annular coils and / or non-planar annular coils, and are arranged in an annular pattern at intervals around the outer periphery of the connecting ring 1, with the outer wall of each coil 2 fixedly connected to the outer wall of the connecting ring 1. Specifically, the connecting ring 1 is used to connect the plurality of coils 2 together and support the coils 2. A planar annular coil refers to an annular coil whose outer wall is located in the same plane and does not protrude in other directions when viewed in the radial direction of the annular coil. A non-planar annular coil refers to an annular coil whose outer wall is not located in the same plane and protrudes in other directions when viewed in the radial direction of the annular coil. The plurality of coils in this embodiment are composed of planar annular coils and non-planar annular coils to produce a complex three-dimensional twisted magnetic cage while controlling the volume of the magnet. Of course, in other alternative implementations, the coils can be composed only of planar annular coils to reduce the volume; or they can be composed only of non-planar annular coils to form a more complex magnetic cage. In this embodiment, the coil 2 comprises a coil box and a winding disposed within the coil box.

[0040] Any two adjacent coils 2 are arranged with a relative spacing along a surface in the thickness direction thereof, and a connecting component 3 is connected between the opposite surfaces of any two adjacent coils 2. The two ends of the connecting component 3 are fixedly connected to the two opposite surfaces of the two coils 2 respectively. Specifically, it can be fixed by welding. The connecting component 3 can adopt a plate-shaped, block-shaped, or other shaped structure that can play a supporting role to resist the change in the spacing between adjacent coils 2. The first distance threshold range is generally 0.1 to 1 times the distance between the two sides of the coil 2 in the axial direction.

[0041] The base 4 has its lower end along its height direction, which is used to support a support surface. A support assembly 5 is connected between the outer wall of each coil 2 and the upper end of the base 4 along its height direction, so that the base 4 supports the corresponding coil 2 through each support assembly 5. The support surface can be, for example, the ground or other location where the stellarator magnet is to be placed. The base 4 can adopt a monolithic or split structure, for example, consisting of a beam structure and a column structure. The beam structure extends along the circumference of the connecting ring 1, and the column structures are spaced apart to provide stable support.

[0042] Each support assembly 5 includes a sliding support member 51 and a rotating support member 52 arranged on the sliding support member 51. The sliding support member 51 is connected to the top end of the base 4 in a radial sliding manner along the connecting ring 1, so that the sliding support member 51 can move relative to the base 4 within a second distance threshold range. The rotating support member 52 is fixedly connected to the outer wall surface of the corresponding coil 2 and can rotate around a first axis relative to the sliding support member 51; the first axis is perpendicular to the radial and axial directions of the connecting ring 1, and the axial direction of the connecting ring 1 is parallel to the height direction of the base 4. Specifically, the sliding support member 51 can achieve radial sliding through a guide rail or a slide groove, and the rotating support member 52 can achieve rotation around the first axis through a rotating shaft or a bearing. The second distance threshold range can be set to within half of the distance between the two sides of the base 4 in the sliding direction.

[0043] With the above structure, the setting of the connecting ring 1 effectively bears the huge centripetal force generated when the magnet is in operation, thereby ensuring the structural stability of the stellarator magnet during operation. By setting a connecting component 3 between two adjacent coils 2, multiple coils 2 are connected to form a whole, which increases the rigidity of the entire stellarator magnet and can effectively resist deformation. In addition, the two ends of the connecting component 3 are fixedly connected to the two opposite surfaces of the two adjacent coils 2, respectively, which can support the coils 2 and resist the relative movement between the coils 2, thereby improving the stability of the coils 2. Furthermore, by setting a supporting component 5, the shrinkage deformation of the stellarator magnet generated at low temperatures and the radial deformation during operation are released, thereby reducing the stress of the support structure of the stellarator magnet and ensuring the stability of the support structure. Finally, the superconducting magnet can be stably supported on the support surface by the base 4. The present application enables the stellarator magnet to have sufficient support strength during operation to maintain the stability of the entire stellarator magnet structure, and is simple to install and convenient for later maintenance.

[0044] Further, refer to Figure 2 In this stellarator magnet, a plurality of connection blocks 11 are fixedly provided on the outer wall surface of the connection ring 1. The plurality of connection blocks 11 are arranged at intervals along the circumferential direction Z of the connection ring 1, and the plurality of connection blocks 11 correspond one-to-one to the plurality of coils 2. Each connection block 11 is fixedly connected to the corresponding coil 2. The connection ring 1 includes a plurality of arc-shaped connection plates 12 connected end to end along the circumferential direction of the connection ring 1. The opposite ends of any two adjacent arc-shaped connection plates 12 are detachably fixedly connected. It should be noted that Figure 1 and Figure 2 Only one of the arc-shaped connecting plates 12 in the connecting ring 1 is shown. The connecting ring 12 is formed by splicing a plurality of arc-shaped connecting plates 12. Figure 2 The circumferential Z, axial X and radial Y directions of the connecting ring 1 are shown in the figure, wherein the circumferential Z direction refers to the length extension direction of the connecting ring 1, the axial X direction refers to the direction of extension of the axis of the connecting ring 1, and the radial Y direction refers to the direction along the radius of the connecting ring 1.

[0045] Specifically, the connecting block 11 can be made of high-strength alloy materials, such as stainless steel or titanium alloy, to ensure structural strength and corrosion resistance. The connecting block 11 can be fixed to the connecting ring 1 by welding or bolting. The shape of the arc-shaped connecting plate 12 can be designed as arc segments with different curvature radii according to actual needs, for example, arc segments of 90 degrees to 120 degrees are combined into a complete annular structure. The connection methods of adjacent arc-shaped connecting plates 12 include but are not limited to flange connection, wedge groove matching or pin connection. As a preferred embodiment, matching flanges are provided at the ends of adjacent arc-shaped connecting plates 12, which are removably fixed by bolts. The connecting block 11 is fixed to the coil 2 and the connecting ring 1 by welding, and the connecting block 11 is fixed to the front end of the coil 2 to strengthen the support for the front end of the coil 2.

[0046] With such a structure, by connecting a plurality of arc-shaped connecting plates 12 to form a connecting ring 1, the manufacture, transportation and installation of the connecting ring 1 are made more convenient. Among them, the provision of the connecting block 11 enhances the connection strength between the coil 2 and the connecting ring 1, and effectively disperses the electromagnetic load. The detachable connection of the plurality of arc-shaped connecting plates 12 can facilitate the maintenance and replacement of a single arc-shaped connecting plate 12 or coil 2, reducing the maintenance cost of the overall structure. Furthermore, connecting a plurality of arc-shaped plates 12 to form a connecting ring 1 allows for flexible adjustment of the diameter of the connecting ring 1 or the number of coils 2 as needed, thereby improving the adaptability of the device. Through such a structure, while ensuring the overall rigidity of the stellarator magnet, it can better adapt to the deformation of the stellarator magnet in a low-temperature working environment.

[0047] Further, refer to Figure 2 In this stellarator magnet, a first connecting flange 13 and a second connecting flange 14 are fixedly provided at both ends of the inner wall surface of each arcuate connecting plate 12. In any two adjacent arcuate connecting plates 12, the first connecting flange 13 of one arcuate connecting plate 12 is fixedly connected to the second connecting flange 14 of the other arcuate connecting plate 12, thereby fixing the two arcuate connecting plates 12 together. At least one reinforcing plate 15 is provided on the inner wall surface of each arcuate connecting plate 12. Each reinforcing plate 15 extends along the circumferential direction Z of the connecting ring 1. The at least one reinforcing plate 15 includes a first reinforcing plate, a second reinforcing plate, and a third reinforcing plate located at the upper, middle, and lower portions of the arcuate connecting plate 12, respectively. Reinforcing ribs 16 are provided on each of the first, second, and third reinforcing plates.

[0048] Specifically, the first connecting flange 13 and the second connecting flange 14 can be secured by welding or bolting. The provision of the reinforcement plate 15 enhances the overall rigidity of the curved connecting plate 12. The first, second, and third reinforcement plates are located at the top, middle, and bottom of the curved connecting plate 12, respectively, effectively distributing force while improving rigidity. Furthermore, the reinforcement ribs 16 can be arranged horizontally or longitudinally to further enhance the bending resistance of the reinforcement plate 15, or they can be distributed in a grid pattern to enhance the stability of the overall structure. As a preferred implementation, multiple reinforcement ribs 16 are provided on both sides of the reinforcement plate 15 along the axial direction of the connecting ring 1. Each reinforcement rib 16 has a tapered structure, with its top not extending beyond the edge of the curved connecting plate 12. This improves rigidity while preventing interference with other structures. The reinforcement ribs 16 are preferably secured to the reinforcement plate 15 by welding. The first and second connecting flanges 13, 14 are preferably welded to the curved connecting plate 12, and the two connecting flanges are preferably screwed together.

[0049] With this structure, the connection strength and overall rigidity of the curved connecting plates 12 can be effectively improved by providing the connection flanges, reinforcement plates 15, and reinforcement ribs 16. The provision of the connection flanges strengthens the connection between adjacent curved connecting plates 12, while the combination of reinforcement plates 15 and reinforcement ribs 16 significantly enhances the deformation resistance of the curved connecting plates 12.

[0050] Further, refer to Figure 2 In this stellarator magnet, a first wedge-shaped half-groove and a second wedge-shaped half-groove are respectively provided at both ends of the inner wall surface of each arc-shaped connecting plate 12. In any two adjacent arc-shaped connecting plates 12, the first wedge-shaped half-groove of one arc-shaped connecting plate 12 is arranged opposite to the second wedge-shaped half-groove of the other arc-shaped connecting plate 12, so that the first wedge-shaped half-groove and the second wedge-shaped half-groove arranged opposite to each other form a wedge-shaped fixed groove. A shear-resistant component A is provided in the wedge-shaped fixed groove. Figure 3 The shear assembly A includes a screw 17, a nut 18, and a wedge block 19 adapted to the wedge fixing groove. A connecting hole is opened in the middle of the side of the wedge block 19 away from the wedge fixing groove. The screw 17 is fixed in the connecting hole through the nut 18. The outer wall surface of the wedge block 19 is in contact with the inner wall surface of the first wedge half groove and the second wedge half groove to align the two adjacent arc-shaped connecting plates 12.

[0051] Specifically, the cross-sectional shape of the first wedge-shaped half groove and the second wedge-shaped half groove can be a trapezoid, a triangle or other geometric shape that can form a wedge-shaped fit. Before the first connecting flange 13 and the second connecting flange 14 are screwed and fixed to fix the two arc-shaped connecting plates 12 together, the first wedge-shaped half groove and the second wedge-shaped half groove are aligned to improve assembly efficiency. The material of the wedge block 19 can be selected from high-strength alloy steel or stainless steel to ensure its shear strength and wear resistance. The screw 17 and the nut 18 can use threaded connectors for easy installation and disassembly. As a preferred embodiment, the outer wall surface of the wedge block 19 can be coated with a lubricating material to reduce the friction resistance with the inner wall surface of the wedge-shaped fixing groove, so as to facilitate adjustment and positioning. In addition, the connecting hole can be set as a through hole or a blind hole, which is specifically selected according to the installation space and force requirements.

[0052] When connecting two curved connecting plates 12, first place them adjacent to each other. Then, install the wedge blocks 19 into the adjacent first and second wedge half-grooves in the two plates to align the two curved connecting plates 12. Then, screw the screws 17 into the connecting holes and secure them with the nuts 18. Next, connect the corresponding first and second connecting flanges 13, 14 to connect the two adjacent curved connecting plates 12.

[0053] The shear-resistant assembly A is used for positioning two adjacent arc-shaped connecting plates 12 during installation, and is also used for the shear-resistant effect between the two adjacent arc-shaped connecting plates 12 .

[0054] With this structure, the cooperation between the wedge-shaped fixing grooves and the shear-resistant assembly A achieves precise alignment and reliable connection of adjacent curved connecting plates 12. The tight fit of the wedge blocks 19 and the wedge-shaped fixing grooves effectively transmits shear forces and prevents relative displacement of the connecting portions of the curved connecting plates 12. The tightening action of the screws 17 and nuts 18 further enhances the stability of the connection while facilitating disassembly and maintenance.

[0055] Further, refer to Figure 4 In this stellarator magnet, the connection assembly 3 includes a first fixing seat 31 and a second fixing seat 32, which are arranged opposite each other, and a connecting plate 33. The ends of the first fixing seat 31 and the second fixing seat 32 that are close to each other are respectively provided with a first groove and a second groove. One end of the connecting plate 33 is arranged in the first groove and abuts against the inner circumferential wall of the first groove. The other end of the connecting plate 33 is arranged in the second groove and abuts against the inner circumferential wall of the second groove. The ends of the first fixing seat 31 and the second fixing seat 32 that are far away from each other are fixedly connected to the two opposing surfaces of the two coils 2, and a gap is formed between the opposing ends of the first fixing seat 31 and the second fixing seat 32.

[0056] Furthermore, multiple threaded holes are spaced apart at both ends of the connecting plate 33. Each threaded hole extends along the thickness direction of the connecting plate 33. A pre-tightening member 34 is provided in each threaded hole. The pre-tightening member 34 is threadedly connected to the threaded hole. The pre-tightening member 34 at one end of the connecting plate 33 can press one end of the connecting plate 33 against the inner circumferential wall of the first groove, and the pre-tightening member 34 at the other end of the connecting plate 33 can press the other end of the connecting plate 33 against the inner circumferential wall of the second groove. Figure 5 The cross-section of the connecting plate 33 along the circumference of the connecting ring 1 is wedge-shaped, and the first groove and the second groove are both configured as wedge-shaped grooves adapted to the connecting plate 33. A plurality of connecting assemblies 3 are connected between any two adjacent coils 2, and the plurality of connecting assemblies 3 are spaced apart along the circumference of the coils.

[0057] As a preferred embodiment, the pre-tightening member 34 can be made of high-strength bolts to ensure the tightening effect between the connecting plate 33 and the groove. The wedge-shaped cross-sectional angle of the connecting plate 33 is preferably 5°-15°, which not only ensures self-centering during assembly, but also avoids stress concentration caused by excessively large angles. There is a slight interference fit between the connecting plate 33 and the first fixing seat 31 and the second fixing seat 32. The inner circumferential walls of the first groove and the second groove, and the outer surface of the connecting plate 33 are roughened, and preferably a wear-resistant coating, such as a tungsten carbide coating, is provided to reduce wear during long-term use, and to facilitate resisting the displacement between adjacent coils 2 through friction, while resisting the displacement through the connection of the pre-tightening member 34. In other alternative implementations, the pre-tightening member 34 can also be made of screws.

[0058] As a preferred embodiment, the threaded holes can be symmetrically distributed at both ends of the connecting plate 33, and the number of pre-tightening parts 34 is adjusted according to the size and force requirements of the connecting plate 33. For example, 3-6 pre-tightening parts 34 are set at each end of the connecting plate 33.

[0059] With such a structure, stable support between adjacent coils 2 is achieved through the connecting assembly 3. When relative displacement occurs between adjacent coils 2 due to the contraction of the magnet, the connecting plate 33 between the first fixing seat 31 and the second fixing seat 32 will deform to adapt to the displacement between the coils 2, while also resisting the displacement between the coils 2. The contact pressure is maintained by the wedge-shaped fit between the groove and the connecting plate 33, and the preload member 34 ensures the stability of the connection. As a result, the structure can effectively resist the displacement of the coil 2 and avoid excessive stress. At the same time, multiple connecting assemblies 3 arranged circumferentially can form a stable force transmission path to ensure the overall rigidity of the magnet structure. Thus, the adaptability to thermal deformation can be significantly improved while ensuring the reliability of the connection.

[0060] Further, refer to Figure 6In this stellarator magnet, the sliding support 51 and the rotating support 52 are rotatably connected via a rotating shaft assembly 6. The rotating support 52 comprises a support column 521 and a rotating plate 522. The top of the support column 521 is fixedly connected to the corresponding coil 2, and the rotating plate 522 is fixedly connected to the bottom of the support column 521. The rotating plate 522 has a first axial hole extending through its thickness. The sliding support 51 comprises a base plate 511, and first and second vertical plates 512 and 513 spaced apart from each other. The base plate 511 is slidably connected to the top of the base 4 along the radial direction of the connecting ring 1. The bottom ends of the first and second vertical plates 512 and 513 are fixedly mounted on the base plate 511. The first and second vertical plates 512 and 513 each have a second axial hole corresponding to the first axial hole. The rotating plate 522 is located between the first and second vertical plates 512 and 513. The rotating shaft assembly 6 passes through the first and second axial holes to rotatably connect the sliding support 51 and the rotating support 52. The axes of the first axial hole and the second axial hole constitute a first axis.

[0061] In a preferred embodiment, a support flange is provided at the bottom of the support 521, and a support plate is provided at the top of the rotating plate 522. The support 521 is connected to the support plate via the support flange, thereby achieving the connection between the support 521 and the rotating plate 522. The top of the support 521 is fixed to the coil 2 by welding.

[0062] With this structure, the rotating shaft assembly 6 realizes a rotatable connection between the sliding support member 51 and the rotating support member 52, allowing the rotating support member 52 to rotate relative to the sliding support member 51 about the first axis. Simultaneously, the sliding support member 51 can slide radially along the connecting ring 1. The cooperation between the sliding support member 51 and the rotating support member 52 can meet the radial and axial displacement requirements of the coil 2.

[0063] Further, refer to Figure 7 In the stellarator magnet, the shaft assembly 6 includes a connecting shaft 61, which is configured as a stepped shaft and includes a first shaft segment, a second shaft segment, and a third shaft segment that are sequentially connected along the axis and have gradually decreasing diameters. The first shaft segment, the second shaft segment, and the third shaft segment are arranged along the axis. Figure 7The shaft assembly 6 is arranged from the right side to the left side of the connecting shaft 61. The end face of the first shaft segment close to the second shaft segment abuts against the side of the first vertical plate 512 away from the rotating plate 522. The second shaft segment is inserted into the second shaft hole of the first vertical plate 512. The third shaft segment is inserted into the first shaft hole of the rotating plate 522 and the second shaft hole of the second vertical plate 513. In addition, the rotating shaft assembly 6 also includes a first sleeve 62, a second sleeve 63, and a fixing ring 64. The first sleeve 62, the second sleeve 63, and the fixing ring 64 are respectively sleeved on the outer wall surface of the third shaft segment in the connecting shaft 61 and abut against each other in the axial direction of the connecting shaft 61. The end face of the first sleeve 62 away from the second sleeve 63 abuts against the end face of the second shaft segment close to the third shaft segment. In the radial direction of the connecting shaft 61, the first sleeve 62 is pressed between the outer wall surface of the third shaft segment and the inner wall surface of the first shaft hole, and the second sleeve 63 is pressed between the outer wall surface of the third shaft segment and the inner wall surface of the second shaft hole in the second vertical plate 513.

[0064] The first axial hole of the rotating plate 522 is configured as a stepped hole and comprises a first hole segment and a second hole segment, which are sequentially connected along its axis and have gradually decreasing diameters. The first sleeve 62 comprises a first cylindrical body, a second cylindrical body, and a third cylindrical body, which are sequentially connected along its axis. The second cylindrical body protrudes from the outer walls of the first and third cylindrical bodies. The end face of the first cylindrical body, which is away from the second cylindrical body, abuts the end face of the second axial segment, which is close to the third axial segment. The end face of the third cylindrical body, which is away from the second cylindrical body, abuts the second sleeve 63. The outer wall of the second cylindrical body abuts the inner wall of the first hole segment, and the outer wall of the third cylindrical body abuts the inner wall of the second hole segment. In addition, the rotating shaft assembly 6 also includes a clamping ring 65, which is sleeved on the outer wall surface of the first cylinder in the first sleeve 62, and includes a first clamping portion and a second clamping portion connected in sequence along its axial direction, the first clamping portion protrudes from the outer wall surface of the second clamping portion, the end surface of the first clamping portion close to the second clamping portion abuts against the end surface of the rotating plate 522 close to the first vertical plate 512, the second clamping portion is clamped between the outer wall surface of the first cylinder and the inner wall surface of the first hole section in the radial direction of the connecting shaft 61, and the first clamping portion is fixed to the rotating plate 522 by a fastener 66, so that the end surface of the second clamping portion away from the first clamping portion is pressed against the end surface of the second cylinder close to the first cylinder, and the end surface of the second cylinder away from the first cylinder is pressed against the end surface of the first hole section close to the second hole section. The outer wall surface of the second sleeve 63 abuts against the inner wall surface of the second axial hole in the second vertical plate 513. A protrusion is provided on the outer wall surface of the end of the second sleeve 63 away from the first sleeve 62. In the axial direction of the connecting shaft 61, the protrusion is pressed between the fixing ring 64 and the side of the second vertical plate 513 away from the rotating plate 522.

[0065] Specifically, the design of the connecting shaft 61 as a stepped shaft facilitates axial positioning and radial support. The cooperation between the first shaft section and the fixing ring 64 can limit the axial displacement of the connecting plate 33, the first vertical plate 512 and the second vertical plate 513. The second shaft section and the third shaft section respectively cooperate with the connecting plate 33, the first vertical plate 512 and the second vertical plate 513 to achieve radial positioning. The first sleeve 62 adopts a three-cylinder structure, and the protrusion of the second cylinder realizes double cooperation with the stepped hole, which not only ensures the transmission of axial clamping force, but also realizes radial clearance compensation. The clamping ring 65 includes a first clamping part and a second clamping part. The axial fixation is first achieved by the first clamping part, and then the radial clamping is completed by the second clamping part. The second sleeve 63 is formed into an L-shaped structure. The protrusion and the fixing ring 64 can form an axial constraint to prevent the connection between the rotating shaft assembly 6 and the connecting plate 33, the first vertical plate 512 and the second vertical plate 513 from loosening. As a preferred embodiment, the second cylindrical body of the first sleeve 62 can be configured as an elastically deformable structure, thereby generating radial deformation during the compression process to compensate for machining errors. Furthermore, the third cylindrical body can be made of a copper alloy to reduce the coefficient of friction, and the second compression portion can be provided with a corrugated contact surface to enhance the anti-loosening effect.

[0066] During assembly, first secure the first sleeve 62 within the axial hole of the rotating plate 522. Then, install the clamping ring 65 and tighten it with the fastener 66. Next, install the second sleeve 63 within the axial hole of the second vertical plate 513. Then, insert the connecting shaft 61 into the first and second sleeves 62, 63, and tighten the fixing ring 64.

[0067] With such a structure, by setting a stepped shaft and a stepped hole, and cooperating with the first sleeve 62, the second sleeve 63 and the clamping ring 65, the bearing capacity and stability of the rotating shaft assembly 6 can be effectively improved, and loosening or wear caused by rotation or sliding can be avoided. At the same time, a stable and reliable rotation connection between the rotating support 52 and the sliding support 51 is also achieved. Among them, the cooperation between the stepped shaft and the stepped hole solves the axial movement problem existing in the traditional single-diameter rotating shaft, the layered clamping design of the sleeve assembly effectively disperses the stress concentration, and the cooperation between the protrusion and the fixing ring 64 prevents axial loosening during operation. Therefore, it is possible to significantly improve the connection stiffness and positioning accuracy while ensuring the rotation flexibility. When it is applied to the support structure of the stellarator magnet to support the stellarator magnet, it can improve the working stability of the stellarator magnet.

[0068] Further, refer to Figure 7 In the stellarator magnet, the connecting shaft 61 is a stud, the fastener 66 is a screw, and the fixing ring 64 is a nut. Figure 6A fixing assembly is provided at the top of the base 4, corresponding to the position of the sliding support 51. The fixing assembly includes a fixing plate 41 and a pressure plate 42. One side of the fixing plate 41 is fixedly connected to the top of the base 4, and the other side is provided with a guide rail, within which the bottom plate 511 slides. The pressure plate 42 is stepped, and the bottom end of the pressure plate 42 is fixedly connected to the fixing plate 41. The top end of the pressure plate 42 is located on the side of the bottom plate 511 away from the fixing plate 41, and a space is formed between the pressure plate 42 and the fixing plate 41 for the bottom plate 511 to slide.

[0069] Specifically, the connecting shaft 61 adopts a stud structure, which is convenient for axial fixation through a nut. At the same time, the stud has a simple structure, is easy to manufacture, and can reduce processing costs. The fastener 66 is a screw, which can improve assembly efficiency and ensure reliable connection between the rotating support 52 and the sliding support 51. The fixing ring 64 adopts a nut structure, which can achieve axial pre-tightening through threaded fitting, thereby eliminating the assembly clearance of the rotating shaft assembly 6. Furthermore, the stepped design of the pressure plate 42 can limit the displacement of the base plate 511 in the guide rail, guide the sliding of the base plate 511, and retain sufficient sliding space. As a preferred embodiment, a lubricating material layer can be provided on the surface of the guide rail, for example, wear-resistant MoS2 is plated on the surface of the guide rail to reduce sliding friction resistance.

[0070] As a preferred implementation, a threaded hole is provided at the bottom end of the pressure plate 42 , and the pressure plate 42 and the fixing plate 41 are fixed by bolts screwed into the threaded hole to improve the convenience and efficiency of assembly and disassembly.

[0071] With this structure, the stud and nut structure simplifies the axial fixing method and reduces the processing precision requirements. In addition, the stepped pressure plate 42 can effectively prevent the axial movement of the support assembly 5 while ensuring the sliding freedom, and can also play a guiding role for the bottom plate 511.

[0072] Further, refer to Figure 8 In the stellarator magnet, the base 4 includes a support beam 43 and a plurality of support columns 44. The support beam 43 extends along the circumferential direction of the connecting ring 1, and the plurality of support columns 44 are arranged at intervals along the extension direction of the support beam 43. The top end of each support column 44 is fixedly arranged on the lower side of the support beam 43 along its height direction, and the bottom end of each support column 44 is used to support the supporting surface, wherein the upper side of the support beam 43 along its height direction constitutes the top end of the base 4.

[0073] Specifically, the support beam 43 can adopt an annular or segmented structure, and the material is preferably high-strength steel or aluminum alloy to withstand the centripetal force generated by the coil system. Multiple support columns 44 are evenly distributed along the circumference, and their number is determined according to the magnet size and load. Generally, one support column 44 is provided for every 2-4 coils 2. The support columns 44 are fixed to the support beam 43 by welding or bolts, and leveling gaskets can be provided at the bottom to adapt to the height difference of different support surfaces. As a preferred embodiment, reinforcing ribs can be provided inside the support beam 43 to increase the bending rigidity, and the support columns 44 adopt a hollow tube structure to reduce weight.

[0074] As a preferred implementation, each support column 44 is connected to the support surface through a flange to improve the connection convenience and reduce costs. The flange is made of stainless steel, and bolt holes are provided on the flange along its thickness direction. As a preferred implementation, the shape of the support column 44 is designed to be cylindrical, which can withstand shear stress more evenly and stably. The material of the support column 44 is specifically inconel 718. In addition, the two ends of the support column 44 are respectively connected to the flange and the support beam 43 by welding. In order to ensure the stability of the connection, the argon arc welding process is preferably used. As a preferred implementation, the support beam 43 is an "I"-shaped beam made of stainless steel, which has a better support effect and can also achieve lightweight.

[0075] As a preferred implementation, one side of the fixing plate 41 is connected to the top end of the support beam 43 by welding.

[0076] With this structure, by extending support beams 43 along the circumference of connecting ring 1, the centripetal force generated by coils 2 is evenly transferred to each support column 44, thereby avoiding localized stress concentration. Furthermore, the provision of multiple support columns 44 enhances the overall stability of base 4, preventing structural collapse due to single-point failure. Support beams 43 provide a stable surface for mounting sliding supports 51, ensuring the precise installation of support assemblies 5 corresponding to each coil 2.

[0077] Although the present invention has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood by those skilled in the art that the above description is provided as a further detailed description of the present invention in conjunction with specific embodiments thereof, and that the specific implementation of the present invention is not limited to these descriptions. Those skilled in the art may make various changes in form and details, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A stellarator magnet, characterized in that: include: Connecting ring; A plurality of coils, the plurality of coils being arranged in an annular pattern at intervals on the outer circumference of the connecting ring, with the outer wall surface of each coil being fixedly connected to the outer wall surface of the connecting ring; any two adjacent coils being arranged with relative intervals along a surface in the thickness direction thereof, and a connecting component being connected between the opposing surfaces of any two adjacent coils, with two ends of the connecting component being fixedly connected to the two opposing surfaces of the two coils respectively; A base, wherein the bottom end of the base along the height direction is used to be supported on a support surface, and a support component is connected between the outer wall surface of each coil and the top end of the base along the height direction, so that the base supports the corresponding coil through each support component; Each of the support assemblies includes a sliding support member and a rotating support member arranged on the sliding support member, the sliding support member is connected to the top end of the base along the radial sliding of the connecting ring, so that the sliding support member can move relative to the base within a second distance threshold range; the rotating support member is fixedly connected to the corresponding outer wall surface of the coil and can rotate around a first axis relative to the sliding support member; the first axis is perpendicular to the radial and axial directions of the connecting ring, and the axial direction of the connecting ring is parallel to the height direction of the base.

2. The stellarator magnet according to claim 1, wherein A plurality of connection blocks are fixedly provided on the outer wall surface of the connection ring. The plurality of connection blocks are arranged at intervals along the circumference of the connection ring, and the plurality of connection blocks correspond to the plurality of coils one by one, and each connection block is fixedly connected to the corresponding coil; The connecting ring comprises a plurality of arc-shaped connecting plates connected end to end along the circumference of the connecting ring, and opposite ends of any two adjacent arc-shaped connecting plates are detachably fixedly connected.

3. The stellarator magnet according to claim 2, wherein: A first connecting flange and a second connecting flange are fixedly provided at both ends of the inner wall surface of each of the arc-shaped connecting plates. Among any two adjacent arc-shaped connecting plates, the first connecting flange of one arc-shaped connecting plate is fixedly connected to the second connecting flange of the other arc-shaped connecting plate to fix the two arc-shaped connecting plates together. The inner wall surface of each of the arc-shaped connecting plates is provided with at least one reinforcing plate, and each reinforcing plate extends along the circumference of the connecting ring. The at least one reinforcing plate includes a first reinforcing plate, a second reinforcing plate and a third reinforcing plate respectively located at the upper, middle and lower parts of the arc-shaped connecting plate, and the first reinforcing plate, the second reinforcing plate and the third reinforcing plate are all provided with reinforcing ribs.

4. The stellarator magnet according to claim 2, wherein A first wedge-shaped half groove and a second wedge-shaped half groove are respectively provided at both ends of the inner wall surface of each of the arc-shaped connecting plates. In any two adjacent arc-shaped connecting plates, the first wedge-shaped half groove of one arc-shaped connecting plate is arranged opposite to the second wedge-shaped half groove of the other arc-shaped connecting plate, so that the opposing first wedge-shaped half groove and the second wedge-shaped half groove form a wedge-shaped fixing groove. A shear-resistant assembly is provided in the wedge-shaped fixing groove, and the shear-resistant assembly includes a screw, a nut, and a wedge-shaped block adapted to the wedge-shaped fixing groove. A connecting hole is provided in the middle of a side of the wedge-shaped block away from the wedge-shaped fixing groove, and the screw is fixed in the connecting hole via the nut. The outer wall surface of the wedge-shaped block is in contact with the inner wall surfaces of the first wedge-shaped half groove and the second wedge-shaped half groove, so that the two adjacent arc-shaped connecting plates are aligned.

5. The stellarator magnet according to claim 1, wherein The connecting assembly includes a first fixing seat and a second fixing seat that are arranged opposite to each other, and a connecting plate; The first and second fixing seats are respectively provided with a first groove and a second groove at their ends close to each other, one end of the connecting plate is arranged in the first groove and abuts against the inner peripheral wall of the first groove, and the other end of the connecting plate is arranged in the second groove and abuts against the inner peripheral wall of the second groove; Ends of the first fixing seat and the second fixing seat that are away from each other are fixedly connected to two opposite surfaces of the two coils respectively, and a gap is formed between the opposite ends of the first fixing seat and the second fixing seat.

6. The stellarator magnet according to claim 5, wherein A plurality of threaded holes are provided at intervals on both ends of the connecting plate, each threaded hole extending in the thickness direction of the connecting plate, a pre-tightening member is provided in each threaded hole, the pre-tightening member is threadedly connected to the threaded hole, the pre-tightening member located at one end of the connecting plate can press the one end of the connecting plate against the inner circumferential wall of the first groove, and the pre-tightening member located at the other end of the connecting plate can press the other end of the connecting plate against the inner circumferential wall of the second groove; The cross-sections of the connecting plates along the circumference of the connecting ring are wedge-shaped, and the first groove and the second groove are both configured as wedge-shaped grooves adapted to the connecting plates; A plurality of the connection components are connected between any two adjacent coils, and the plurality of the connection components are arranged at intervals along the circumference of the coils.

7. The stellarator magnet according to claim 1, wherein The sliding support member and the rotating support member are rotatably connected via a rotating shaft assembly; The rotating support member includes a pillar and a rotating plate, the top end of the pillar is fixedly connected to the corresponding coil, the rotating plate is fixedly connected to the bottom end of the pillar, and the rotating plate has a first axial hole penetrating in the thickness direction thereof; The sliding support member includes a bottom plate, and a first vertical plate and a second vertical plate arranged relatively spaced apart. The bottom plate is connected to the top end of the base along the radial sliding of the connecting ring. The bottom ends of the first vertical plate and the second vertical plate are fixedly arranged on the bottom plate, and the first vertical plate and the second vertical plate are both provided with a second axial hole corresponding to the first axial hole. The rotating plate is located between the first vertical plate and the second vertical plate, and the rotating shaft assembly passes through the first axial hole and the second axial hole to rotatably connect the sliding support member and the rotating support member together; wherein, the axis of the first axial hole and the second axial hole constitutes the first axis.

8. The stellarator magnet according to claim 7, wherein The rotating shaft assembly includes a connecting shaft, which is configured as a stepped shaft and includes a first shaft segment, a second shaft segment, and a third shaft segment that are sequentially connected along the axis and have gradually decreasing diameters. The end surface of the first shaft segment close to the second shaft segment abuts against a side of the first vertical plate away from the rotating plate. The second shaft segment is inserted into the second shaft hole of the first vertical plate. The third shaft segment is inserted into the first shaft hole of the rotating plate and the second shaft hole of the second vertical plate. The rotating shaft assembly further includes a first sleeve, a second sleeve, and a fixing ring, wherein the first sleeve, the second sleeve, and the fixing ring are respectively sleeved on the outer wall surface of the third shaft segment of the connecting shaft and abut against each other in sequence in the axial direction of the connecting shaft, and an end surface of the first sleeve away from the second sleeve abuts against an end surface of the second shaft segment close to the third shaft segment; The outer wall surface of the second sleeve abuts against the inner wall surface of the second axial hole in the second vertical plate. A protrusion is provided on the outer wall surface of the second sleeve at one end away from the first sleeve. In the axial direction of the connecting shaft, the protrusion is pressed between the fixing ring and the side of the second vertical plate away from the rotating plate.

9. The stellarator magnet according to claim 8, wherein The connecting shaft is a stud, and the fixing ring is a nut; A fixing assembly is provided at the top of the base corresponding to the position of the sliding support member; the fixing assembly includes a fixing plate and a pressing plate, one side of the fixing plate is fixedly connected to the top of the base, and the other side is provided with a guide rail, and the bottom plate is slidably connected to the guide rail; The pressing plate is stepped, and the bottom end of the pressing plate is fixedly connected to the fixing plate. The top end of the pressing plate is located on the side of the bottom plate away from the fixing plate, and a space for the bottom plate to slide is formed between the top end and the fixing plate.

10. The stellarator magnet according to any one of claims 1 to 9, characterized in that: The base includes a support beam and multiple support columns, the support beam extends along the circumferential direction of the connecting ring, and the multiple support columns are arranged at intervals along the extension direction of the support beam, the top end of each support column is fixedly set on the lower side of the support beam along its height direction, and the bottom end of each support column is used to support the support surface, wherein the upper side of the support beam along its height direction constitutes the top end of the base.

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