Conformal tool for superconducting coil

Abstract

The invention discloses a superconducting coil shape preserving tool, which relates to the technical field of superconducting coils and is used for preserving the shape of a coil in a heat treatment process of the superconducting coil, and the coil is wound in a ring shape and is provided with a radial inner side surface, a radial outer side surface and two axial end surfaces. The superconducting coil shape-preserving tool comprises a support and a plurality of fixing structures, wherein the support forms an annular shape; the multiple fixing structures are connected with the support and arranged at intervals in the circumferential direction of the support, each fixing structure comprises multiple pressing plates, and the multiple pressing plates comprise the first pressing plate, the second pressing plate and the third pressing plate; the first pressing plate is used for limiting the radial inner side face of the coil, the second pressing plate is far away from the center of the support relative to the first pressing plate and used for limiting the radial outer side face of the coil, and the third pressing plate is arranged between the first pressing plate and the second pressing plate and used for limiting the two axial end faces of the coil. The superconducting coil shape preserving tool can be used for preserving the shape of the coil so as to reduce the deformation of the coil in the heat treatment process.

Description

Technical Field

[0001] The present invention relates to the technical field of superconducting coils, and more particularly to a superconducting coil shape-preserving tooling. Background Art

[0002] In order to obtain a higher magnetic field strength, magnetic confinement fusion devices usually use Nb 3 Sn superconducting materials to manufacture magnet coils. Since Nb 3 Sn superconducting materials are very sensitive to stress and strain, large Nb 3 Sn superconducting coils generally adopt a manufacturing process route of winding first and then reacting, that is, Nb 3 Sn conductor wires with stainless steel armors are first wound into coils with a specific contour and then subjected to reaction heat treatment. After heat treatment, the conductor wires in the conductor armor form an A15 superconducting phase, and at the same time, the stress of the conductor armor and the conductor wires is released.

[0003] During the heat treatment process of the wound and formed coil, due to factors such as temperature gradient and mechanical stress, the coil is prone to deformation, causing the coil to deviate from the designed contour dimensions, thereby affecting the assembly with other components in the fusion device and even reducing the magnetic field uniformity of the magnet system. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, an object of the present invention is to provide a superconducting coil shape-preserving tooling that can preserve the shape of the coil, reduce the deformation of the coil during the heat treatment process, control the deformation of the coil within the design requirements during the heat treatment process, ensure the magnetic field uniformity of the magnet system, and ensure good assembly of the coil with other components in the fusion device.

[0005] The superconducting coil shape-preserving tooling according to an embodiment of the present invention is used to preserve the shape of the coil during the heat treatment process of the superconducting coil. The coil is wound into a ring shape and has a radially inner side surface, a radially outer side surface, and two axial end surfaces. It includes: a bracket, the bracket forms a ring shape; a plurality of fixing structures, the plurality of fixing structures are connected to the bracket and are arranged at intervals along the circumference of the bracket. Each fixing structure includes a plurality of pressing plates, and the plurality of pressing plates include a first pressing plate, a second pressing plate, and a third pressing plate; the first pressing plate is used to limit the radially inner side surface of the coil, the second pressing plate is away from the center of the bracket relative to the first pressing plate and is used to limit the radially outer side surface of the coil, and the third pressing plate is arranged between the first pressing plate and the second pressing plate and is used to limit the two axial end surfaces of the coil.

[0006] The superconducting coil conformal tooling according to the embodiments of the present invention fixes the overall contour shape of the coil through the setting of a bracket and a plurality of fixing structures. The fixing structures are used to fix the circumferential surface of the coil perpendicular to the coil winding direction. Therefore, the embodiments of the present invention can achieve the conformal shaping of the overall shape of the coil and the fixation of local positions, reduce the deformation of the coil during the heat treatment process, enable the deformation amount of the coil to meet the requirements during the processes of heating, heat preservation, and cooling in the heat treatment, control the deformation of the coil within the design requirements during the heat treatment process, ensure the magnetic field uniformity of the magnet system and the good assembly of the coil with other components in the fusion device. In addition, the conformal tooling of the embodiments of the present invention also has the advantages of simple structure and low use cost.

[0007] In some embodiments, the fixing structure further includes a fixing main body and an adjusting assembly. The adjusting assembly is provided on the fixing main body and the position of the adjusting assembly relative to the fixing main body is adjustable. The first pressing plate and the second pressing plate can abut against the adjusting assembly, and at least the third pressing plate on the axial side of the first pressing plate can abut against the adjusting assembly.

[0008] In some embodiments, the adjusting assembly includes a stud, a sleeve, and a threaded member. The threaded member is connected to the fixing main body through the sleeve. The stud sequentially passes through the threaded member, the sleeve, and the fixing main body to abut against the pressing plate, and the stud is screwed to the threaded member.

[0009] In some embodiments, the pressing plate forms a limiting groove, and the end of the stud abutting against the pressing plate is located in the limiting groove.

[0010] In some embodiments, the side surface of the first pressing plate for abutting against the coil is an arc surface.

[0011] In some embodiments, the fixing main body includes a first plate, a second plate, and at least one third plate that are detachably connected. The first plate is located radially inside the first pressing plate and is provided with the adjusting assembly. The second plate is located radially outside the second pressing plate and is provided with the adjusting assembly. The third plate is connected between the first plate and the second plate and is provided with the adjusting assembly. Along the axial direction, the third pressing plate is located on the side of the third plate close to the first plate and the second plate.

[0012] In some embodiments, the bracket is connected to the fixing main body.

[0013] In some embodiments, the bracket is located radially inside the first pressing plate, and the bracket is provided with the adjusting assembly.

[0014] In some embodiments, the bracket is located radially inside the first pressing plate. The bracket is provided with the adjusting assembly, and the bracket is spaced apart from the fixed body.

[0015] In some embodiments, the bracket includes a plurality of bases and a plurality of connecting members. The plurality of bases are arranged at intervals in the circumferential direction, and adjacent bases are connected to form a ring through the connecting members.

[0016] In some embodiments, the coil includes a main body portion, a transition section, and a lead-out head. The lead-out head is spaced apart from the main body portion, and the transition section is connected between the main body portion and the lead-out head; The conformal tooling further includes a lead-out head fixing structure. The lead-out head fixing structure includes an auxiliary bracket, a first fixing member, and a second fixing member. The auxiliary bracket is installed on the fixing structure. The first fixing member and the second fixing member are arranged on the auxiliary bracket. The first fixing member is used to press the transition section against the main body portion, and the second fixing member is used to clamp the end of the coil.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is the first structural schematic diagram of the superconducting coil conformal tooling and the coil according to the embodiment of the present invention; Figure 2 is the second structural schematic diagram of the superconducting coil conformal tooling and the coil according to the embodiment of the present invention; Figure 3 is the structural schematic diagram of the fixing structure in the superconducting coil conformal tooling according to the embodiment of the present invention; Figure 4 is the structural schematic diagram of the bracket in the superconducting coil conformal tooling according to the embodiment of the present invention; Figure 5 is the structural schematic diagram of the adjusting assembly in the superconducting coil conformal tooling according to the embodiment of the present invention; Figure 6 is the structural schematic diagram of a lead-out head fixing structure in one embodiment of the superconducting coil conformal tooling according to the embodiment of the present invention; Figure 7 is the structural schematic diagram of another lead-out head fixing structure in the superconducting coil conformal tooling according to the embodiment of the present invention.

[0019] Reference Signs: Conformal Tooling 100; Bracket 10; base body 101; connecting member 102; Fixing structure 20; Pressing plate 201; first pressing plate 2011; second pressing plate 2012; third pressing plate 2013; Limiting groove 2014; fixing main body 202; first plate 2021; second plate 2022; third plate 2023; Adjusting assembly 203; stud 2031; sleeve 2032; threaded member 2033; Auxiliary frame 30; first fixing member 40; second fixing member 50; Coil 200; main body portion 300; transition section 400; lead-out head 500; Radial inner side surface 301; radial outer side surface 302; axial end surface 303. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as commonly understood by those of ordinary skill in the technical field to which the present invention belongs; the terms used in the description of the present invention in the specification of the invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present invention or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "attached" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] In the present invention, the term "and / or" merely describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in the present invention, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0024] In the embodiments of the present invention, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of the present invention shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to the present invention.

[0025] The term "plurality" as used in the present invention refers to two or more (including two).

[0026] For a magnetic confinement fusion device to obtain a higher magnetic field strength, Nb 3 Sn superconducting materials are usually used to manufacture magnet coils. Since Nb 3 Sn superconducting materials are very sensitive to stress and strain, large Nb 3 Sn superconducting coils generally adopt a manufacturing process route of winding first and then reacting, that is, winding the Nb 3 Sn conductor wire with a stainless steel armor into a coil with a specific profile first and then performing reaction heat treatment. After heat treatment, the conductor wire in the conductor armor forms an A15 superconducting phase, and at the same time, the stress between the conductor armor and the conductor wire is released.

[0027] During the heat treatment process of the wound and formed coil, due to factors such as temperature gradient and mechanical stress, the coil is prone to deformation, causing the coil to deviate from the designed profile dimensions, thereby affecting the assembly with other components in the fusion device and even reducing the magnetic field uniformity of the magnet system. Therefore, in order to control the deformation of the coil within the design requirements during the heat treatment process, a special coil shape-preserving tooling needs to be designed and manufactured for the coil heat treatment.

[0028] The following will describe the superconducting coil shape-preserving tooling 100 of the present invention in conjunction with Figures 1 to 7 to describe the superconducting coil shape-preserving tooling 100 of the present invention.

[0029] As Figure 1 and Figure 2 shown, according to the superconducting coil shape-preserving tooling 100 of the embodiment of the present invention, it is used to preserve the shape of the coil 200 during the heat treatment process of the superconducting coil. The coil 200 is wound into a ring shape and has a radially inner side surface 301, a radially outer side surface 302, and two axial end surfaces 303.

[0030] Here, reference can be made to Figure 1As shown, the cross-section of the coil 200 perpendicular to the axial direction can be annular; alternatively, the cross-section of the coil 200 perpendicular to the axial direction can also be formed by connecting straight line segments and arc segments. For example, the two ends of the straight line segment and the two ends of the arc segment are correspondingly connected, that is, the whole coil 200 is in a D shape. The cross-section of the coil 200 perpendicular to the winding direction can be rectangular, trapezoidal, etc.

[0031] The superconducting coil conformal tooling 100 includes a bracket 10 and a plurality of fixing structures 20. The bracket 10 forms a ring shape; the plurality of fixing structures 20 are connected to the bracket 10 and are arranged at intervals along the circumferential direction of the bracket 10. Each fixing structure 20 includes a plurality of pressing plates 201, and the plurality of pressing plates 201 include a first pressing plate 2011, a second pressing plate 2012, and a third pressing plate 2013; the first pressing plate 2011 is used to limit the radial inner side surface 301 of the coil 200, the second pressing plate 2012 is farther from the center of the bracket 10 than the first pressing plate 2011 and is used to limit the radial outer side surface 302 of the coil 200, and the third pressing plate 2013 is arranged between the first pressing plate 2011 and the second pressing plate 2012 and is used to limit the two axial end surfaces 303 of the coil 200.

[0032] Exemplarily, reference can be made to Figure 1 and Figure 3 , the bracket 10 can be located radially inside the plurality of first pressing plates 2011, the adjusting component 203 passes through the bracket 10 and is connected to the first pressing plate 2011, the adjusting component 203 is used to adjust the position of the first pressing plate 2011, the fixing structure 20 can include a fixing body 202, the fixing body 202 can be connected to the first pressing plate 2011 or not connected to the first pressing plate 2011, and the fixing body 202 is spaced apart from the bracket 10. Here, the bracket 10 can be used to support the overall shape of the coil 200 and keep the overall shape of the coil 200 in shape. The fixing structure 20 abuts against the four sides perpendicular to the winding direction of the coil 200. Therefore, the embodiments of the present invention can realize the shape preservation of the overall shape of the coil 200 and the fixation of local positions, and reduce the deformation of the coil 200 during the heat treatment process.

[0033] Exemplarily, the bracket 10 can be arranged radially inside the first pressing plate 2011, the adjusting component 203 passes through the bracket 10 and is connected to the first pressing plate 2011, and the adjusting component 203 is used to adjust the position of the first pressing plate 2011; the fixing structure 20 includes a fixing body 202, and the two axial ends of the bracket 10 are connected to the fixing bodies 202 of the plurality of fixing structures 20, that is, the bracket 10 can directly fix the positions of the plurality of fixing structures 20. At the same time, since the fixing structure 20 abuts against the four sides perpendicular to the winding direction of the coil 200, the embodiments of the present invention can realize the shape preservation of the overall shape of the coil 200 and the fixation of local positions, and reduce the deformation of the coil 200 during the heat treatment process.

[0034] Exemplarily, the bracket 10 can be an annular base. During installation, the base is located on one axial side of the coil 200, and a plurality of fixing structures 20 are all fixed to the annular base, so that the positions of the plurality of fixing structures 20 are fixed. Since the plurality of fixing structures 20 abut against the periphery of the coil 200 perpendicular to the winding direction, therefore, the embodiments of the present invention can achieve the shape retention of the overall shape of the coil 200 and the fixation of local positions, and reduce the deformation of the coil 200 during the heat treatment process.

[0035] The bracket 10 is annular. For example, the overall shape of the bracket 10 can adopt a conformal design, that is, the overall shape of the bracket 10 is similar to the overall shape of the coil 200. The bracket 10 is annular. In this way, during heat treatment, the coil 200 can be placed between the inner and outer air ducts, which is beneficial to making the temperature uniformity of the coil 200 good, the thermal expansion amounts at each part are close, and the coil 200 is not easily pulled and deformed by the shape retention tooling 100.

[0036] It can be understood that the plurality of first pressing plates 2011 of the plurality of fixing structures 20 are arranged at intervals along the circumferential direction of the bracket 10, the plurality of second pressing plates 2012 of the plurality of fixing structures 20 are arranged at intervals along the circumferential direction of the bracket 10, and the plurality of third pressing plates 2013 of the plurality of fixing structures 20 are arranged at intervals along the circumferential direction of the bracket 10.

[0037] It should be noted that the diameter of the coil 200 is very large, and it may reach several meters. Therefore, if the fixing structure 20 is in an overall continuous annular shape, for example, the fixing structure 20 includes a fixing main body 202, the fixing main body 202 is annular, or the first pressing plate 2011 is annular, or the second pressing plate 2012 is annular, or the third pressing plate 2013 is annular, it will greatly increase the processing cost and processing difficulty of the shape retention tooling 100 of the embodiments of the present invention. Therefore, in this embodiment, the plurality of fixing structures 20 are arranged at intervals along the circumferential direction of the bracket 10. In this way, it can not only achieve a good fixing effect on the coil 200, but also greatly reduce the processing cost of the shape retention tooling 100.

[0038] The first pressing plate 2011 is used to limit the radial inner side surface 301 of the coil 200. That is to say, in use, the first pressing plate 2011 is arranged on the radial inner side of the coil 200 and abuts against the radial inner side surface 301 of the coil 200 in the radial direction. The second pressing plate 2012 is farther from the center of the bracket 10 than the first pressing plate 2011 and is used to limit the radial outer side surface 302 of the coil 200. That is to say, in use, the second pressing plate 2012 is arranged on the radial outer side of the radial outer side surface 302 of the coil 200 and abuts against the radial outer side surface 302 of the coil 200 in the radial direction. The third pressing plate 2013 is arranged between the first pressing plate 2011 and the second pressing plate 2012 and is used to limit the two axial end surfaces 303 of the coil 200. That is to say, in use, the third pressing plate 2013 is arranged on both axial sides of the coil 200, and the third pressing plate 2013 abuts against the axial end surface 303 of the coil 200 in the axial direction.

[0039] For the superconducting coil shape-preserving tooling 100 according to the embodiment of the present invention, by providing the bracket 10 and a plurality of fixing structures 20, the bracket 10 is used to fix the overall contour shape of the coil 200, and the fixing structure 20 is used to fix the circumferential surface of the coil 200 perpendicular to the winding direction of the coil 200. Therefore, the embodiment of the present invention can realize the shape preservation of the overall shape of the coil 200 and the fixation of local positions, can reduce the deformation of the coil 200 during the heat treatment process, so that the deformation amount of the coil 200 can meet the requirements during the processes of heating, heat preservation and cooling in the heat treatment, control the deformation of the coil 200 within the design requirements during the heat treatment process, and ensure the magnetic field uniformity of the magnet system and the good assembly of the coil with other components in the fusion device. In addition, the shape-preserving tooling 100 of the embodiment of the present invention also has the advantages of simple structure and low use cost.

[0040] In some embodiments, reference may be made to Figure 3 , the fixing structure 20 further includes a fixing main body 202 and an adjusting assembly 203. The fixing main body 202 is provided with the adjusting assembly 203 and the position of the adjusting assembly 203 relative to the fixing main body 202 is adjustable. The first pressing plate 2011 and the second pressing plate 2012 can abut against the adjusting assembly 203, and at least the third pressing plate 2013 on one axial side of the first pressing plate 2011 can abut against the adjusting assembly 203.

[0041] It can be understood that a plurality of fixing main bodies 202 are provided at intervals in the circumferential direction.

[0042] The first pressing plate 2011 and the second pressing plate 2012 can abut against the adjusting assembly 203, and at least the third pressing plate 2013 on one axial side of the first pressing plate 2011 can abut against the adjusting assembly 203. For example, the adjusting assembly 203 includes a stud 2031, the stud 2031 is threadedly connected to the fixed body 202, the first pressing plate 2011 can be disposed between the radially inner side surface 301 of the coil 200 and the stud 2031. During use, adjusting the position of the stud 2031 can cause the first pressing plate 2011 to press against the radially inner side surface 301 of the coil 200 or cause the first pressing plate 2011 to separate from the coil 200; the second pressing plate 2012 can be disposed between the radially outer side surface 302 of the coil 200 and the stud 2031. During use, adjusting the position of the stud 2031 can cause the second pressing plate 2012 to press against the radially outer side surface 302 of the coil 200 or cause the second pressing plate 2012 to separate from the coil 200; the third pressing plate 2013 can be disposed between the axial end surface 303 of the coil 200 and the stud 2031. During use, adjusting the position of the stud 2031 can cause the third pressing plate 2013 to press against the axial end surface 303 of the coil 200 or cause the third pressing plate 2013 to separate from the coil 200.

[0043] The third pressing plate 2013 on at least one axial side of the first pressing plate 2011 is connected to the adjusting assembly 203. That is to say, only the third pressing plate 2013 on one axial side of the coil 200 can be connected to the adjusting assembly 203. That is, only the position of the third pressing plate 2013 on one axial side of the coil 200 is adjustable, and the third pressing plate 2013 on the other axial side of the coil 200 is directly connected to the fixed body 202 (reference can be made to Figure 4 ). Or, the third pressing plates 2013 on both axial sides of the coil 200 are connected to the adjusting assembly 203, and the positions of the third pressing plates 2013 on both axial sides of the coil 200 are adjustable.

[0044] The fixing structure 20 of the above embodiment can conveniently and stably fix the coil 200 and also conveniently remove the coil 200 from the conformal tooling 100.

[0045] In some embodiments, reference can be made to Figure 5 The adjusting assembly 203 includes a stud 2031, a sleeve 2032 and a threaded member 2033. The threaded member 2033 is connected to the fixed body 202 through the sleeve 2032. The stud 2031 sequentially passes through the threaded member 2033, the sleeve 2032 and the fixed body 202 and abuts against the pressing plate 201, and the stud 2031 is screwed to the threaded member 2033.

[0046] It should be noted that if the stud 2031 is directly threadedly connected to the fixed main body 202 or the bracket 10, for example, the stud 2031 is directly connected to the fixed main body 202 through the threaded part 2033 welded to the fixed main body 202. During the heat treatment process, the threads of the stud 2031 and the threaded part 2033 may be welded together, making it impossible to remove the stud 2031. Consequently, the pressing plate 201 cannot be separated from the coil 200, resulting in the inability to remove the coil 200 from the conformal tooling 100.

[0047] In this embodiment, by providing the sleeve 2032, the wall thickness of the sleeve 2032 is much smaller than that of the threaded part 2033. After the heat treatment is completed, the sleeve 2032 can be cut off, enabling the stud 2031 to be separated from the fixed main body 202 or the bracket 10, and thus allowing the pressing plate 201 to be separated from the coil 200. When the fixing structure 20 needs to be reused, the sleeve 2032 remaining on the fixed main body 202 can be cut off or broken off (for example, the sleeve 2032 can be welded to the fixed main body 202 at only a few welding points to facilitate breaking off the sleeve 2032), so that the conformal tooling 100 can be reused, reducing the usage cost.

[0048] In some embodiments, reference can be made to Figure 5 , the stud 2031 abuts against the pressing plate 201, and the pressing plate 201 forms a limiting groove 2014, and the end of the stud 2031 abutting against the pressing plate 201 is located in the limiting groove 2014.

[0049] During the process of tightening the stud 2031 to press the pressing plate 201, the pressing plate 201 may slip. In this embodiment, by providing the limiting groove 2014 on the pressing plate 201, the setting of the limiting groove 2014 can limit the maximum relative movement distance between the stud 2031 and the pressing plate 201, thereby reducing the slipping degree of the pressing plate 201 and decreasing the possibility of significant slipping and misalignment of the pressing plate 201.

[0050] Here, the limiting groove 2014 can be in clearance fit with one end of the stud 2031, or the limiting groove 2014 can be in transition fit with one end of the stud 2031, or the inner diameter of the limiting groove 2014 can also be a few millimeters or centimeters larger than the outer diameter of one end of the stud 2031. The limiting groove 2014 can be a cylindrical groove, or it can also be a polygonal groove, etc., and no specific limitation is made here.

[0051] In some embodiments, reference can be made to Figure 3, the fixed body 202 includes a first plate 2021, a second plate 2022 and at least one third plate 2023 that are detachably connected. The first plate 2021 is located radially inside the first pressing plate 2011 and is provided with an adjusting assembly 203. The second plate 2022 is located radially outside the second pressing plate 2012 and is provided with an adjusting assembly 203. The third plate 2023 is connected between the first plate 2021 and the second plate 2022 and is provided with an adjusting assembly 203. Along the axial direction, the third pressing plate 2013 is located on the side of the third plate 2023 close to the first plate 2021 and the second plate 2022.

[0052] Exemplarily, the fixed body 202 includes one third plate 2023. One third plate 2023 is connected with an adjusting assembly 203. The adjusting assembly 203 can abut against the third pressing plate 2013 on one axial side of the coil 200. There is a third pressing plate 2013 on the other axial side of the coil 200. The third pressing plate 2013 is connected between the first plate 2021 and the second plate 2022.

[0053] Exemplarily, the fixing structure 20 may also include two third plates 2023. Both of the two third plates 2023 are connected with adjusting assemblies 203. The adjusting assemblies 203 of the two third plates 2023 can correspondingly abut against the third pressing plates 2013 on both axial sides of the coil 200.

[0054] The fixed body 202 includes a first plate 2021, a second plate 2022 and at least one third plate 2023 that are detachably connected. For example, they are connected by bolts. In this way, the processing difficulty of the fixed body 202 is small, the processing cost is low, and it is convenient to disassemble the fixed body 202.

[0055] In some other embodiments, the first plate 2021 and the third plate 2023 may also be integrally formed to form a first plate group, and the first plate group is detachably connected to the second plate 2022; or, the second plate 2022 and the third plate 2023 may be integrally formed to form a second plate group, and the second plate group is detachably connected to the first plate 2021. Or, the first plate 2021 and the third plate 2023 may be integrally formed to form a first plate group, and the second plate 2022 and the third pressing plate 2013 may be integrally formed to form a third plate group, and the first plate group and the third plate group are detachably connected. Or, the second plate 2022 and the third plate 2023 may be integrally formed to form a second plate group, and the first plate 2021 and the third pressing plate 2013 may be integrally formed to form a fourth plate group, and the second plate group and the fourth plate group are detachably connected.

[0056] In some embodiments, the bracket 10 is connected to the fixed body 202.

[0057] For example, the fixed body 202 includes a first plate 2021, a second plate 2022, and two third plates 2023. The bracket 10 is connected to any one of the first plate 2021, the second plate 2022, and the third plate 2023. In this embodiment, the bracket 10 does not need to be provided with an adjusting component 203 to abut against the first pressing plate 2011.

[0058] For example, the fixed body 202 includes a first plate 2021, a second plate 2022, and a third plate 2023. Both the third plate 2023 and the third pressing plate 2013 are connected between the second plate 2022 and the first plate 2021. The bracket 10 is connected to any one of the first plate 2021, the second plate 2022, the third plate 2023, and the third pressing plate 2013. In this embodiment, the bracket 10 does not need to be provided with an adjusting component 203 to abut against the first pressing plate 2011.

[0059] In some embodiments, the bracket 10 is located radially inside the first pressing plate 2011. The bracket 10 is connected to the fixed body 202, and the bracket 10 is provided with an adjusting component 203.

[0060] For example, the bracket 10 is located radially inside the first pressing plate 2011. The fixed body 202 only includes a second plate 2022 and two third plates 2023. The third plate 2023 is connected between the bracket 10 and the second plate 2022. In this embodiment, the bracket 10 is provided with an adjusting component 203 to abut against the first pressing plate 2011.

[0061] For example, the bracket 10 is located radially inside the first pressing plate 2011. The fixed body 202 only includes a second plate 2022 and a third plate 2023. Both the third plate 2023 and the third pressing plate 2013 are connected between the second plate 2022 and the bracket 10. In this embodiment, the bracket 10 is provided with an adjusting component 203 to abut against the first pressing plate 2011.

[0062] The bracket 10 is directly connected to the fixed body 202, so that the number of components of the entire conformal tooling 100 is smaller and the structure is more concise.

[0063] In some embodiments, reference may be made to Figure 1 , the bracket 10 is located radially inside the first pressing plate 2011. The bracket 10 is provided with an adjusting component 203. The adjusting component 203 provided on the bracket 10 can abut against the first pressing plate 2011, and the bracket 10 is spaced apart from the fixed body 202.

[0064] In the above embodiments, the contact surface between the inner peripheral surface of the coil 200 and the conformal tooling 100 is larger, and the supporting and fixing effect is better and more stable.

[0065] In some embodiments, the third plate 2023 and the first plate 2021 are detachably connected. One of the third plate 2023 and the first plate 2021 is provided with a positioning groove, and at least a part of the other of the first plate 2021 and the third plate 2023 is located in the positioning groove and is in positioning cooperation with the positioning groove. By providing the positioning groove, it is beneficial for the first plate 2021 and the third plate 2023 to be quickly assembled in place.

[0066] In some embodiments, the third plate 2023 and the second plate 2022 are detachably connected. One of the third plate 2023 and the second plate 2022 is provided with a positioning groove, and at least a part of the other of the second plate 2022 and the third plate 2023 is located in the positioning groove and is in positioning cooperation with the positioning groove. By providing the positioning groove, it is beneficial for the third plate 2023 and the second plate 2022 to be quickly assembled in place.

[0067] In some embodiments, the third pressing plate 2013 and the first plate 2021 are detachably connected. One of the third pressing plate 2013 and the first plate 2021 is provided with a positioning groove, and at least a part of the other of the first plate 2021 and the third pressing plate 2013 is located in the positioning groove and is in positioning cooperation with the positioning groove. By providing the positioning groove, it is beneficial for the first plate 2021 and the third pressing plate 2013 to be quickly assembled in place.

[0068] In some embodiments, the third pressing plate 2013 and the second plate 2022 are detachably connected. One of the third pressing plate 2013 and the second plate 2022 is provided with a positioning groove, and at least a part of the other of the second plate 2022 and the third pressing plate 2013 is located in the positioning groove and is in positioning cooperation with the positioning groove. By providing the positioning groove, it is beneficial for the third pressing plate 2013 and the second plate 2022 to be quickly assembled in place.

[0069] In some embodiments, reference may be made to Figure 4 , the bracket 10 includes a plurality of bases 101 and a plurality of connecting members 102. The plurality of bases 101 are arranged at intervals in the circumferential direction, and adjacent bases 101 are connected into a ring through the connecting members 102.

[0070] That is to say, the bracket 10 is formed by connecting a plurality of bases 101 and a plurality of connecting members 102. In this way, compared with the bracket 10 being a whole ring-shaped member, the processing cost is lower.

[0071] Exemplarily, the first pressing plate 2011 may be provided on the radial outer side of the base 101. The base 101 is provided with an adjusting assembly 203. The adjusting assembly 203 can abut against the first pressing plate 2011 provided on the radial outer side of the base 101. The fixing structure 20 includes a second plate 2022 and a third plate 2023. The second plate 2022 is located on the radial outer side of the second pressing plate 2012, and the third plate 2023 is connected between the base 101 and the second plate 2022.

[0072] Exemplarily, the fixed body 202 includes a first plate 2021, a second plate 2022, and at least one third plate 2023. The first plate 2021 is located radially inside the first pressing plate 2011, the second plate 2022 is located radially outside the second pressing plate 2012, the third plate 2023 is connected between the first plate 2021 and the second plate 2022. The base body 101 and the first plate 2021 are arranged at intervals in the circumferential direction. The first pressing plate 2011 is also provided on the radially outer side of the base body 101, and the base body 101 is provided with an adjusting assembly 203.

[0073] In some embodiments, the bracket 10 is provided radially inside the first pressing plate 2011. The bracket 10 is provided with an adjusting assembly 203. The position of the adjusting assembly 203 relative to the bracket 10 is adjustable, and the adjusting assembly 203 abuts against the first pressing plate 2011.

[0074] In some embodiments, the adjusting assembly 203 on the bracket 10 has the same structure as the adjusting assembly 203 on the fixed body 202. In this way, it is convenient to disassemble the adjusting assembly 203 from the bracket 10, and the types of parts of the conformal tooling 100 can be reduced.

[0075] In some embodiments, since the radian of the radially inner circumferential surface of the coil 200 is relatively large, the side surface of the first pressing plate 2011 for abutting against the coil 200 is an arc surface, so as to increase the contact area between the first pressing plate 2011 and the coil 200, and further increase the fixing effect of the first pressing plate 2011 on the coil 200. In other embodiments, the side surface of the second pressing plate 2012 for abutting against the coil 200 can also be an arc surface.

[0076] In some embodiments, the coil 200 includes a main body portion 300, a transition section 400, and a lead-out head 500. The lead-out head 500 and the main body portion 300 are spaced apart, and the transition section 400 is connected between the main body portion 300 and the lead-out head 500. The conformal tooling 100 further includes a lead-out head fixing structure. The lead-out head fixing structure includes an auxiliary bracket 30, a first fixing member 40, and a second fixing member 50. The auxiliary bracket 30 is installed on the fixing structure 20. The first fixing member 40 and the second fixing member 50 are provided on the auxiliary bracket 30. The first fixing member 40 is used to press the transition section 400 against the main body portion 300, and the second fixing member 50 is used to clamp the end of the coil 200.

[0077] It should be noted that each coil 200 has two lead-out ends 500. For multiple coils 200 stacked axially, one lead-out end 500 of the upper coil 200 is used to connect to one lead-out end 500 of the lower coil 200, and the other lead-out end 500 of the upper coil 200 is used to connect to one lead-out end 500 of the upper coil 200. One lead-out end 500 of the lowermost coil 200 needs to extend upward to the uppermost coil 200.

[0078] The lead-out end 500 cannot be bent after heat treatment, so a lead-out end fixing structure is needed to fix the position of the lead-out end 500 before heat treatment.

[0079] Specifically, the shape and structure of the auxiliary frame 30 can be flexibly designed according to the position of the fixing structure 20 and the positions of the lead-out end 500 and the transition section 400. For example, the auxiliary frame 30 can be an extension part, and the extension part is integrally formed with the part of the fixing main body 202 located outside the radial direction of the coil 200, and the first fixing member 40 is provided on the extension part. Or, the auxiliary frame 30 can also include a cross beam and a column connected to each other. The two ends of the cross beam are connected to the two fixing main bodies 202, and the second fixing member 50 is provided on the column.

[0080] In some embodiments, multiple coils 200 installed with the conformal tooling 100 can be stacked axially.

[0081] In some embodiments, the conformal tooling 100 can further include a base, and the base can be used to carry the support 10 or the fixing structure 20.

[0082] In some embodiments, the conformal tooling 100 can be made of austenitic stainless steel, and the part of the material in contact with the coil 200 also has requirements for magnetic permeability (≤1.03) and ferrite (no ferrite).

[0083] In some embodiments, the fixing main body 202 can be formed with a lifting part, and the lifting part is used to connect with an external lifting device to realize the lifting of the conformal tooling 100. For example, the lifting part can be a lifting hole.

[0084] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0085] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A superconducting coil conformal tooling, characterized in that: Used for maintaining the shape of a coil (200) in a superconducting coil heat treatment process, the coil (200) being wound in a ring shape and having a radial inner side surface (301), a radial outer side surface (302) and two axial end surfaces (303), comprising: A support (10), wherein the support (10) is formed in a ring shape; A plurality of fixing structures (20), the plurality of fixing structures (20) being connected to the bracket (10) and arranged at intervals along the circumference of the bracket (10), each of the fixing structures (20) comprising a plurality of clamping plates (201), the plurality of clamping plates (201) comprising a first clamping plate (2011), a second clamping plate (2012) and a third clamping plate (2013); The first clamping plate (2011) is used to limit the radial inner side surface (301) of the coil (200); the second clamping plate (2012) is away from the center of the bracket (10) relative to the first clamping plate (2011) and is used to limit the radial outer side surface (302) of the coil (200); the third clamping plate (2013) is arranged between the first clamping plate (2011) and the second clamping plate (2012) and is used to limit the two axial end surfaces (303) of the coil (200).

2. The superconducting coil conformal tooling according to claim 1, characterized in that: The fixed structure (20) also includes a fixed body (202) and an adjustment component (203); the fixed body (202) is provided with the adjustment component (203) and the position of the adjustment component (203) relative to the fixed body (202) is adjustable; the first clamping plate (2011) and the second clamping plate (2012) can be abutted against the adjustment component (203); at least the third clamping plate (2013) on one axial side of the first clamping plate (2011) can be abutted against the adjustment component (203).

3. The superconducting coil conformal tooling according to claim 2, characterized in that: The adjustment component (203) comprises a stud (2031), a sleeve (2032) and a threaded member (2033); the threaded member (2033) is connected to the fixed body (202) via the sleeve (2032); the stud (2031) is sequentially inserted into the threaded member (2033), the sleeve (2032) and the fixed body (202) and abuts against the clamping plate (201); and the stud (2031) is threadedly connected to the threaded member (2033).

4. The superconducting coil conformal tooling according to claim 3, characterized in that: The clamping plate (201) forms a limiting groove (2014), and one end of the stud (2031) abutting against the clamping plate (201) is located in the limiting groove (2014).

5. The superconducting coil conformal tooling according to claim 1, characterized in that: The side surface of the first pressing plate (2011) that contacts the coil (200) is in the form of an arc surface.

6. The superconducting coil conformal tooling according to claim 2, characterized in that: The fixed body (202) includes a first plate (2021), a second plate (2022) and at least one third plate (2023) which are detachably connected to each other, wherein the first plate (2021) is located radially inside the first clamping plate (2011) and is provided with the adjustment component (203), the second plate (2022) is located radially outside the second clamping plate (2012) and is provided with the adjustment component (203), the third plate (2023) is connected between the first plate (2021) and the second plate (2022) and is provided with the adjustment component (203), and along the axial direction, the third clamping plate (2013) is located on one side of the third plate (2023) close to the first plate (2021) and the second plate (2022).

7. The superconducting coil conformal tooling according to claim 2, characterized in that: The bracket (10) is connected to the fixing body (202).

8. The superconducting coil conformal tooling according to claim 7, characterized in that: The support (10) is located radially inward of the first clamping plate (2011), and the support (10) is provided with the adjustment component (203).

9. The superconducting coil conformal tooling according to claim 2, characterized in that: The bracket (10) is located radially inward of the first clamping plate (2011), the bracket (10) is provided with the adjustment assembly (203), and the bracket (10) is spaced apart from the fixed body (202).

10. The superconducting coil conformal tooling according to claim 1, characterized in that: The support (10) comprises a plurality of bases (101) and a plurality of connecting members (102); the plurality of bases (101) are arranged at intervals along the circumferential direction, and adjacent bases (101) are connected to form a ring via the connecting members (102).

11. The superconducting coil conformal tooling according to any one of claims 1 to 10, characterized in that: The coil (200) comprises a main body (300), a transition section (400) and a wire outlet (500), wherein the wire outlet (500) is spaced apart from the main body (300), and the transition section (400) is connected between the main body (300) and the wire outlet (500); The conformal tooling (100) further comprises a wire head fixing structure, wherein the wire head fixing structure comprises an auxiliary frame (30), a first fixing member (40) and a second fixing member (50), wherein the auxiliary frame (30) is mounted on the fixing structure (20), the first fixing member (40) and the second fixing member (50) are arranged on the auxiliary frame (30), the first fixing member (40) is used to press the transition section (400) against the main body (300), and the second fixing member (50) is used to clamp the end of the coil (200).

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