Superconducting magnet, generator and method of assembling a generator

Abstract

The application relates to a superconducting magnet, a generator and an assembling method of the generator, the superconducting magnet comprising a superconducting coil in a closed ring shape; a support assembly supporting the superconducting coil, the support assembly comprising a plurality of support units distributed along the ring track of the superconducting coil at intervals, each of the support units comprising a support piece and a bearing piece, the bearing piece being arranged on one side of the support piece in the axial direction of the superconducting coil and being formed with a containing groove, the superconducting coil being contained in the containing groove of each of the support units, and the support piece being arranged to protrude from the superconducting coil on the other side of the superconducting coil in the axial direction. The superconducting magnet in the embodiment of the application can solve the problem of internal stress concentration caused by the asynchronous cold shrinkage between the superconducting coil and the support assembly while ensuring the stable support of the superconducting coil.

Description

Technical Field

[0001] This application relates to the field of wind power technology, and in particular to a superconducting magnet, a generator, and a method for assembling the generator. Background Technology

[0002] Superconducting magnets typically consist of superconducting coils and coil supports. The superconducting coils, as the excitation unit of superconducting motors, replace the copper or aluminum coils and permanent magnets of conventional motors in terms of topology. The superconducting coils generally operate inside a Dewar and are fixed to the inside of the Dewar by structures such as armor or supports.

[0003] Under operating conditions, when current is applied to the superconducting coil, it experiences a Lorentz force from the magnetic field. This requires the coil support to provide support and stabilize the superconducting coil. However, superconducting coils are typically assembled at room temperature, while Dewars operate at cryogenic temperatures (10K-30K). Due to the different coefficients of thermal expansion of the materials, the temperature drop from room temperature to cryogenic temperatures causes varying degrees of contraction between the superconducting coil and the coil support. This can easily cause the coil support to compress the superconducting coil, leading to structural damage. Summary of the Invention

[0004] This application provides a superconducting magnet, a generator, and a method for assembling the generator. The superconducting magnet can ensure stable support for the superconducting coil while solving the problem of internal stress concentration caused by asynchronous cooling and contraction between the superconducting coil and the support components.

[0005] On one hand, according to the embodiments of this application, a superconducting magnet is proposed, including a superconducting coil in the form of a closed ring; a support assembly for supporting the superconducting coil, the support assembly including a plurality of support units spaced apart along the annular trajectory of the superconducting coil, each support unit including a support member and a carrier member, the carrier member being disposed on one side of the support member on the axial direction of the superconducting coil and forming a receiving groove, the superconducting coil being accommodated in the receiving groove of each support unit, and the support member protruding from the superconducting coil on the other side of the axial direction of the superconducting coil.

[0006] According to one aspect of the embodiments of this application, the carrier includes: a first main body portion connected to a support member; and a first bent portion, one end of which is connected to the first main body portion and the other end of which is bent toward a side away from the support member, wherein the first main body portion and the first bent portion form a receiving groove.

[0007] According to one aspect of the embodiments of this application, the support unit further includes a cover, the cover including: a second main body portion, which covers the side of the first main body portion away from the support member; and a second bent portion, one end of which is connected to the second main body portion and the other end of which is bent toward the support member, the bending direction of the second bent portion being opposite to that of the first bent portion, so as to fix the superconducting coil in the receiving groove.

[0008] According to one aspect of the embodiments of this application, a plurality of first bent portions are spaced apart on the same first main body, and a plurality of second bent portions are spaced apart on the same second main body. The first bent portions and second bent portions are spaced apart and alternately arranged along a circular trajectory. The first main body, second main body, first bent portions, and second bent portions form a split, hollow structure for carrying the superconducting coil, which greatly increases the contact area between the superconducting coil and the cooling medium, thereby reducing cooling power loss and operating costs.

[0009] According to one aspect of the embodiments of this application, the first bending portion is an elastic structure that can deform under the action of external force to change the size of the receiving groove.

[0010] According to one aspect of an embodiment of this application, the superconducting coil is polygonal and ring-shaped, having a predetermined length and width. A plurality of support units include a first support unit and a second support unit. The first support unit extends along the length direction of the superconducting coil, and the second support unit extends along the width direction of the superconducting coil. At least a portion of the elastic modulus of the second support unit is greater than that of the first support unit. That is, the second support unit forms an elastic support, and the elastic deformation of the second support unit can effectively absorb the cold contraction deformation of the superconducting coil, thereby reducing or even eliminating the cold contraction stress between the support assembly and the superconducting coil.

[0011] According to one aspect of the embodiments of this application, each support member includes a connecting portion and a base. One end of the connecting portion is connected to a carrier member and the other end is connected to the base. The base of the first support unit extends along the width direction. By supporting the carrier member through the connecting portion, the superconducting coil is separated from the plane where the base is located, reducing heat leakage. In addition, the extending direction of the base of the first support unit is the same as the direction of the Lorentz force on the superconducting coil, thereby effectively providing support and preventing overturning.

[0012] According to one aspect of the embodiments of this application, the length dimension of the connecting portion of the second support unit is smaller than the width dimension of the connecting portion of the first support unit. That is, the thickness of the connecting portion of the second support unit is thinner, making the elastic modulus of the second support unit greater than that of the first support unit, thereby making it easier for the second support unit to absorb the cold contraction deformation of the superconducting coil.

[0013] According to one aspect of the embodiments of this application, the support member further includes two or more protrusions, each protruding from the side surface of the base opposite to the connecting portion, and a gap groove is formed between adjacent protrusions. By providing protrusions, the contact area between the base and its plane can be reduced, thereby reducing heat leakage.

[0014] According to one aspect of the embodiments of this application, a first support unit is symmetrically arranged along the width direction of the superconducting coil, and a second support unit is symmetrically arranged at both ends along the length direction of the superconducting coil.

[0015] According to one aspect of the embodiments of this application, the distance between the end of the connecting part connected to the carrier and the end of the connecting part connected to the base can be lengthened or shortened.

[0016] According to one aspect of the embodiments of this application, the carrier and the support are an integral structure. From the perspective of the number of parts, this reduces the number of parts, simplifies the structural form, and simplifies the assembly process, thereby reducing assembly difficulty, shortening the manufacturing cycle, and lowering assembly costs. From the perspective of part processing and manufacturing, the integral structure of the carrier and the support effectively improves material utilization and reduces material costs.

[0017] According to one aspect of the embodiments of this application, depending on the cooling method, the superconducting coil can be cooled by air cooling, liquid cooling, or a cooling conductor, with the cooling conductor at least partially attached to the superconducting coil to cool it. The cooling conductor can be a copper sheet, a graphene sheet, or a semiconductor sheet. Using a semiconductor sheet can effectively attach to the superconducting coil and improve the cooling effect of the coil.

[0018] In another aspect, an embodiment of this application provides a generator including a vacuum chamber, such as the superconducting magnet in the above embodiment, wherein the superconducting magnet is disposed within the vacuum chamber.

[0019] In another aspect, according to an embodiment of this application, a method for assembling a generator is provided, comprising: providing a vacuum cavity and a superconducting magnet, the superconducting magnet including a support assembly and a superconducting coil, the support assembly including a plurality of support units, each support unit including a support member and a carrier member, the carrier member having a receiving groove on the side opposite to the support member; placing each support member in the vacuum cavity; embedding the superconducting coil into the receiving groove of each carrier member; and sealing the vacuum cavity.

[0020] According to one aspect of the embodiments of this application, the support unit further includes a cover. After the superconducting coil is embedded in the receiving groove of each carrier, the assembly method further includes: covering the side of each carrier away from the support member with the cover to fix the superconducting coil in the receiving groove.

[0021] According to one aspect of the embodiments of this application, a mounting position is provided inside the vacuum cavity. The mounting position is a plane, and the plane is provided with mounting holes for mounting support components.

[0022] The superconducting magnet, generator, and generator assembly method provided in this application embodiment include a superconducting coil and a support assembly. The support assembly includes multiple support units spaced apart along the annular trajectory of the superconducting coil. Each support unit includes a support member and a carrier member. The carrier member has a receiving groove to accommodate the superconducting coil within the receiving groove of each support unit. The support member protrudes from the superconducting coil on the opposite side of the superconducting coil's axial direction, thereby stably supporting the superconducting coil through the support units. Furthermore, by arranging the multiple support units separately, the overall shrinkage deformation of the support assembly can be decomposed into the local shrinkage deformation of each support unit, preventing the deformation of the support assembly from accumulating. That is, compared with the overall support assembly, the difference in the amount of cold shrinkage deformation between the separately arranged support units and the superconducting coil is smaller, thereby reducing the cold shrinkage stress between the superconducting coil and the support assembly, and thus solving the problem of internal stress concentration caused by asynchronous cold shrinkage between the superconducting coil and the support assembly. Attached Figure Description

[0023] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the structure of a superconducting magnet according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the structure of the first support unit according to an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the structure of the cover body that fits onto the first support unit according to an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the second support unit according to an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the structure of the cover body that fits onto the second support unit according to an embodiment of this application;

[0029] Figure 6 This is a top view of a superconducting coil according to an embodiment of this application;

[0030] Figure 7 This is a side view of the first support unit according to an embodiment of this application;

[0031] Figure 8 This is a side view of the second support unit according to an embodiment of this application;

[0032] Figure 9 This is a front view of the second support unit according to an embodiment of this application;

[0033] Figure 10 yes Figure 1Cross-sectional view of the first support unit along the BB direction;

[0034] Figure 11 This is a cross-sectional view of a generator in an embodiment of this application in which a superconducting magnet is installed in a vacuum cavity;

[0035] Figure 12 This is a schematic diagram of a superconducting magnet installed in a vacuum cavity in a generator according to an embodiment of this application;

[0036] Figure 13 This is a flowchart of a generator assembly method according to an embodiment of this application;

[0037] Figure 14 This is a flowchart of a generator assembly method according to another embodiment of this application.

[0038] in:

[0039] 1-Superconducting coil;

[0040] 2-Support assembly; 21-Support member; 211-Connecting part; 212-Base; 213-Protrusion; 22-Bearing member; 221-First main body; 222-First bending part; 23-Cover; 231-Second main body; 232-Second bending part;

[0041] 20 - Support unit; 210 - First support unit; 220 - Second support unit;

[0042] 3-Cooling components;

[0043] 100-Superconducting magnet;

[0044] S1 - Receiving groove; S2 - Spacer groove; S3 - Vacuum chamber;

[0045] X - Length direction; Y - Width direction; Z - Axial direction.

[0046] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0047] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0048] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the superconducting magnet and generator of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] Superconducting coils are typically fixed within a Dewar valve using an armor or support. Currently, the armor or support for superconducting coils can be broadly categorized into three types: First, the linkage type. To reduce contact between the armor and the Dewar valve, a linkage is used to fix the superconducting coil to the Dewar valve. This linkage is formed from a composite of multiple materials. Since the linear expansion coefficients of these materials differ, increasing the number of materials with different linear expansion coefficients leads to an increase in the number of materials with varying linear expansion coefficients, which is detrimental to controlling cold shrinkage deformation. Furthermore, the linkage mechanism has dead points, and the increased number of linkages makes the movement of the entire superconducting coil uncontrollable. Utilizing the dead points of the linkage mechanism places higher demands on the dimensions and assembly precision of the linkages. Second, the integral type. This involves encapsulating the superconducting coil entirely within an armor, typically made of metal. This design ensures high support strength but also introduces stress concentration problems due to uneven shrinkage between the superconducting coil and the armor. Third, the segmented type includes various partitions and slots. The overall structure is ring-shaped with several layers and several lobes in each layer. A certain gap is reserved between the lobes to adjust the displacement changes caused by the cooling and contraction of the support and the superconducting coil. However, this structure has a large number of lobes and is suitable for stationary superconducting magnets, but not for applications such as generators.

[0050] Therefore, existing superconducting magnets cannot ensure stable support for the superconducting coil while adjusting for displacement changes caused by asynchronous cooling and contraction between the support structure and the superconducting coil. To solve the above problems, this application provides an assembly method for a superconducting magnet, a generator, and the generator. The following will describe various embodiments of the assembly method for the superconducting magnet, the generator, and the generator with reference to the accompanying drawings.

[0051] Please see Figures 1 to 5 This application provides a superconducting magnet 100, including a superconducting coil 1 and a support assembly 2. The superconducting coil 1 is in the form of a closed ring. The support assembly 2 supports the superconducting coil 1 and includes a plurality of support units 20 spaced apart along the annular trajectory of the superconducting coil 1. Each support unit 20 includes a support member 21 and a carrier member 22. The carrier member 22 is disposed on one side of the support member 21 along the axial direction Z of the superconducting coil 1 and forms a receiving groove S1. The superconducting coil 1 is accommodated in the receiving groove S1 of each support unit 20. The support member 21 protrudes from the superconducting coil 1 on the other side along the axial direction Z of the superconducting coil 1.

[0052] The superconducting magnet 100 provided in this embodiment has a support member 22 with a receiving groove S1 to accommodate the superconducting coil 1 within the receiving groove S1 of each support unit 20. The support member 21 protrudes from the superconducting coil 1 on the opposite side of its axial direction Z, thereby stably supporting the superconducting coil 1 through the support unit 20. Furthermore, according to the linear expansion formula, under a constant coefficient of linear expansion, smaller components produce smaller deformations; that is, reducing the size of the component can reduce its shrinkage deformation. By separately arranging multiple support units 20, the overall shrinkage deformation of the support assembly 2 can be decomposed into local shrinkage deformations of each support unit 20, preventing the deformation of the support assembly 2 from accumulating. That is, compared to the overall support assembly 2, the difference in cold shrinkage deformation between the separately arranged support units 20 and the superconducting coil 1 is smaller, thereby reducing the cold shrinkage stress between the superconducting coil 1 and the support assembly 2, and thus solving the problem of internal stress concentration caused by asynchronous cold shrinkage between the superconducting coil 1 and the support assembly 2.

[0053] In some optional embodiments, the carrier 22 and the support 21 are an integral structure. By making the carrier 22 and the support 21 integrally set, the number of parts is reduced, the structural form is simplified, the assembly process is simple, the assembly difficulty is reduced, the manufacturing cycle is shortened, and the assembly cost is reduced. From the perspective of parts processing and manufacturing, the integral structure of the carrier 22 and the support 21 effectively improves the material utilization rate and reduces the material cost.

[0054] It is understandable that, since the superconducting coil 1 operates at a deep cryogenic temperature (10K-30K), in order to maintain the stable low-temperature environment required for the normal operation of the superconducting coil 1, the superconducting coil 1 is often placed in a cooling medium. At this time, in addition to stably supporting the superconducting coil 1, the support unit 20 also needs to achieve effective cooling of the superconducting coil 1.

[0055] Please see Figure 2 and Figure 4 In some optional embodiments, the carrier 22 includes a first main body 221 and a first bent portion 222. The first main body 221 is connected to the support 21. One end of the first bent portion 222 is connected to the first main body 221, and the other end is bent away from the support 21. The first main body 221 and the first bent portion 222 form a receiving groove S1. By configuring the carrier 22 with the structure of the first main body 221 and the first bent portion 222, the surface of the superconducting coil 1 away from the first bent portion 222 can be exposed to the cooling medium, thereby increasing the contact area between the superconducting coil 1 and the cooling medium, reducing cooling power loss, and reducing operating costs.

[0056] Please see Figure 3 and Figure 5 To prevent the superconducting coil 1 from detaching from the receiving groove S1, in some optional embodiments, the support unit 20 further includes a cover 23. The cover 23 includes a second main body 231 and a second bent portion 232. The second main body 231 covers the side of the first main body 221 facing away from the support member 21. One end of the second bent portion 232 is connected to the second main body 231, and the other end is bent toward the support member 21. The bending direction of the second bent portion 232 is opposite to that of the first bent portion 222, so as to fix the superconducting coil 1 in the receiving groove S1. When the superconducting coil 1 is placed in the receiving groove S1, by covering the superconducting coil 1 with the cover 23, connecting its second main body 231 to the first main body 221, and fastening the second bent portion 232 relative to the first bent portion 222 onto the superconducting coil 1, the superconducting coil 1 can be confined in the receiving groove S1.

[0057] Please continue reading. Figures 1 to 5As an optional implementation, to avoid affecting the cooling of the superconducting coil 1 when the cover 23 is placed on the support member 22, in some optional embodiments, multiple first bending portions 222 are spaced apart on the same first main body 221, and multiple second bending portions 232 are spaced apart on the same second main body 231. The first bending portions 222 and the second bending portions 232 are spaced apart and alternately arranged along a circular trajectory. That is, the first main body 221, the second main body 231, the first bending portions 222, and the second bending portions 232 form a split hollow structure, thereby greatly increasing the contact area between the superconducting coil 1 and the cooling medium while stably supporting the superconducting coil 1 in the receiving groove S1, thereby reducing cooling power loss and reducing operating costs.

[0058] Optionally, the first main body 221 may have only one first bend 222, and the second main body 231 may have only one second bend 232. By staggering the first bend 222 and the second bend 232, the contact area between the superconducting coil 1 and the cooling medium can also be increased. Compared to having only one first bend 222 on the first main body 221, having multiple first bends 222 spaced apart on the same first main body 221 results in a simpler connection structure and higher reliability, but also a relatively larger shrinkage deformation. Therefore, the arrangement of the first main body 221, the second main body 231, the first bend 222, and the second bend 232 can be adjusted according to the actual situation, as long as it can stably support the superconducting coil 1 while exposing at least part of the superconducting coil 1 to the cooling medium. This application does not impose specific limitations.

[0059] In some optional embodiments, the first bending portion 222 is an elastic structure that can deform under external force to change the size of the receiving groove S1. When the superconducting coil 1 is placed in the receiving groove S1, the shrinkage deformation of the superconducting coil 1 and the support unit 20 can be absorbed by the first bending portion 222, thereby reducing the difference in cold shrinkage deformation between the superconducting coil 1 and the support unit 20, and thus reducing the cold shrinkage stress between the superconducting coil 1 and the support assembly 2. Optionally, the elastic structure can be made of low-temperature resistant rubber.

[0060] Considering that the cold shrinkage deformation of each segment of the superconducting coil 1 varies depending on its shape, the structure of the support unit 20 at that position can be adjusted according to the deformation of the segment of the superconducting coil 1 to further reduce the cold shrinkage stress between the superconducting coil 1 and the support component 2.

[0061] Please see Figures 1 to 6As shown, in some optional embodiments, the superconducting coil 1 is a polygonal ring with a predetermined length and width. Multiple support units 20 include a first support unit 210 and a second support unit 220. The first support unit 210 extends along the length direction X of the superconducting coil 1, and the second support unit 220 extends along the width direction Y of the superconducting coil 1. The elastic coefficient of at least a portion of the second support unit 220 is greater than that of the first support unit 210. Taking a rectangular ring as an example, according to the linear expansion formula, its dimension in the length direction X is greater than its dimension in the width direction Y. Therefore, with a fixed coefficient of linear expansion, the amount of shrinkage deformation of the superconducting coil 1 along the length direction X will be greater than its amount of deformation along the width direction Y. Therefore, by making the elastic coefficient of at least a portion of the second support unit 220, which extends along the width direction Y, greater than that of the first support unit 210, which extends along the length direction X, the shrinkage deformation of the superconducting coil 1 can be absorbed by the elastic deformation of the second support unit 220, thereby reducing the cold shrinkage stress between the superconducting coil 1 and the support assembly 2.

[0062] It is understood that the elastic modulus is the ratio between stress and strain experienced by a material during the elastic deformation stage. In other words, the elastic modulus can be considered an indicator of the ease with which a material undergoes elastic deformation, and it is related to the material's elastic modulus and cross-sectional area. Optionally, the elastic modulus of at least a portion of the second support unit 220 can be adjusted to be less than that of the first support unit 210, or the cross-sectional area along the axial direction Z of at least a portion of the second support unit 220 can be made smaller than the cross-sectional area along the axial direction Z of the corresponding portion of the first support unit 210, thereby making the elastic modulus of at least a portion of the second support unit 220 greater than that of the first support unit 210.

[0063] It should be noted that the superconducting coil 1 will be subjected to a Lorentz force along the width direction Y during operation. Therefore, it is necessary to ensure that the support component 2 can provide sufficient support force to balance this Lorentz force, thereby achieving stable support for the superconducting coil 1.

[0064] Please see Figures 1 to 7In some optional embodiments, each support member 21 includes a connecting portion 211 and a base 212. One end of the connecting portion 211 is connected to the carrier member 22 and the other end is connected to the base 212. The base 212 of the first support unit 210 extends along the width direction Y. Since the first support unit 210 extends along the length direction X, that is, the first support unit 210 abuts against one side surface of the superconducting coil 1 along the width direction Y, when the first support unit 210 is subjected to a Lorentz force along the width direction Y, the first support unit 210 can provide a reverse support force, improving the fixing effect of the superconducting coil 1. At this time, in order to ensure the fixing effect of the first support unit 210, the base 212 of the first support unit 210 extends along the width direction Y, that is, in the same direction as the Lorentz force on the superconducting coil 1, thereby providing more effective support for the superconducting coil 1 and preventing overturning.

[0065] Optionally, since the first support unit 210 is used to provide support for the superconducting coil 1, in order to further ensure the stable setting of the first support unit 210, the dimension of the first support unit 210 along the length direction X is larger than the dimension of the second support unit 220 along the width direction Y, so as to improve the stability of the support of the first support unit 210, and at the same time facilitate the second support unit 220 to absorb the cold shrinkage deformation along the length direction X, and reduce the cold shrinkage stress between the superconducting coil 1 and the support assembly 2.

[0066] In some alternative embodiments, the superconducting coil 1 is symmetrically provided with a first support unit 210 along the width direction Y, and the superconducting coil 1 is symmetrically provided with second support units 220 at both ends along the length direction X. By symmetrically providing the first support units 210 at both ends of the superconducting coil 1 along the width direction Y, the overall stability of the support assembly 2 is improved.

[0067] In some other embodiments, multiple first support units 210 may be provided on one side of the superconducting coil 1 along the width direction Y to improve the reliability of supporting the superconducting coil 1. Alternatively, only one first support unit 210 may be provided to reduce the difference in cold shrinkage deformation between the support unit 20 and the superconducting coil 1. Furthermore, a number of first support units 210 may be provided on one side of the superconducting coil 1 along the width direction Y, while a different number of first support units 210 may be provided on the other side. The specific arrangement can be adjusted according to the actual environment in which the superconducting coil 1 is installed, and this application does not impose specific limitations.

[0068] In some alternative embodiments, the connecting part 211 may extend along the axial direction Z, that is, the support member 22 protrudes from the plane of the base 212. The connecting part 211 supports the support member 22, thereby separating the superconducting coil 1 from the plane of the base 212, further increasing the contact area between the superconducting coil 1 and the cooling medium, effectively improving the cooling efficiency and reducing heat leakage.

[0069] Optionally, the distance between the end of the connecting part 211 connected to the carrier 22 and the end of the connecting part 211 connected to the base 212 can be increased or decreased. When the dimension of the support member 21 along the axial direction Z is large, the carrier 22 and the support member 21 can be set separately, and the distance between the carrier part 22 and the support member 21 along the axial direction Z can be adjusted by the connecting part 211. For example, the distance between the end of the connecting part 211 connected to the carrier 22 and the end of the connecting part 211 connected to the base 212 can be adjusted by means of a threaded connection to suit different application scenarios.

[0070] Please see Figure 7 and Figure 8 In some optional embodiments, the dimension of the connecting portion 211 of the second support unit 220 along the length direction X is smaller than the dimension of the connecting portion 211 of the first support unit 210 along the width direction Y. Wherein, the dimension of the connecting portion 211 of the second support unit 220 along the length direction X is 'a', and the dimension of the connecting portion 211 of the first support unit 210 along the width direction Y is 'b'. Since 'a' is smaller than 'b', the thickness of the connecting portion 211 of the second support unit 220 is reduced, thereby increasing the elastic coefficient of the second support unit 220 and making it easier to absorb the cold contraction deformation of the superconducting coil 1 in the length direction X through the second support unit 220.

[0071] Please see Figure 9 In some optional embodiments, the support member 21 further includes two or more protrusions 213, each protruding from the side of the base 212 opposite to the connecting portion 211, and a gap groove S2 is formed between two adjacent protrusions 213. By forming protrusions 213 on the side of the base 212 opposite to the connecting portion 211, i.e., adopting a pier structure, the contact area between the base 212 and its plane is reduced, thereby reducing heat leakage.

[0072] Please see Figure 10 In some optional embodiments, the superconducting magnet 100 further includes a cooling element 3, which is at least partially attached to the superconducting coil 1 to cool the superconducting coil 1. Depending on the cooling method, the superconducting coil 1 can be cooled by air, liquid, or a cooling element. When a cooling element is used, the cooling element 3 is at least partially attached to the superconducting coil to cool it.

[0073] Optionally, the cooling conductor 3 can be disposed within the receiving groove S1, so that the superconducting coil 1 fits snugly against the cooling conductor 3 when embedded in the receiving groove S1. The cooling conductor 3 can also be disposed on the side of the superconducting coil 1 facing the receiving groove S1, or it can partially enclose the superconducting coil 1. Its specific placement and structure can be adjusted according to the structure of the superconducting coil 1 and the supporting assembly 2, and are not specifically limited here. Furthermore, the cooling conductor 3 can be a copper sheet, a graphene sheet, or a semiconductor sheet. When the cooling conductor 3 is a copper sheet, it can reduce costs while ensuring the cooling effect of the superconducting coil 1; when the cooling conductor 3 is a semiconductor sheet, it can effectively fit the superconducting coil 1 and improve its cooling effect.

[0074] Please see Figure 11 and Figure 12 According to an embodiment of this application, a generator is also provided, including a vacuum chamber S3 and a superconducting magnet 100 as described in the above embodiment, wherein the superconducting magnet 100 is disposed within the vacuum chamber S3. It should be noted that the generator includes a Dewar breaker, and the Dewar breaker includes the inner and outer walls of the rotor and the vacuum chamber S3, which can be formed by evacuating the inner and outer walls of the rotor. The superconducting magnet 100 is disposed within the vacuum chamber S3, and the superconducting coil 1 is cooled by introducing a cooling medium into the vacuum chamber S3 or by cooling through a cooling conductor.

[0075] Please see Figure 13 According to an embodiment of this application, a method for assembling a generator is provided, comprising:

[0076] S10 provides a vacuum cavity S3 and a superconducting magnet 100. The superconducting magnet 100 includes a support assembly 2 and a superconducting coil 1. The support assembly 2 includes multiple support units 20. Each support unit 20 includes a support member 21 and a carrier member 22. The carrier member 22 has a receiving groove S1 on the side away from the support member 21.

[0077] S20, each support member 21 is placed inside the vacuum chamber S3;

[0078] S30, embed the superconducting coil 1 into the receiving groove S1 of each carrier 22;

[0079] S40 encapsulates the vacuum cavity S3.

[0080] In some optional embodiments, a mounting position is provided within the vacuum chamber S3. The mounting position is a plane with mounting holes for mounting support components. Each support member 21 can be mounted in a predetermined position within the vacuum chamber S3 by inserting bolts through the mounting holes, thereby fixing the superconducting magnet 100.

[0081] The generator assembly method provided in this application embodiment is simple to operate. Because the support unit 20 of the superconducting magnet 100 has few parts, it can be more easily assembled into the vacuum chamber S3, reducing assembly and manufacturing costs. Furthermore, when the assembled generator is cooled by a cooling medium or by a cooling conductor in the vacuum chamber S3, the superconducting magnet 100 can be rapidly cooled. Simultaneously, during operation, the support assembly 2 can also reduce heat leakage from the superconducting magnet 100, reducing cooling power loss and operating costs. Please refer to... Figure 14 In some alternative embodiments, the support unit 20 further includes a cover 23. After the superconducting coil 1 is embedded in the receiving groove S1 of each carrier 22, the assembly method further includes: S50, covering the side of each carrier 22 away from the support member 21 with the cover 23 to fix the superconducting coil 1 in the receiving groove S1.

[0082] When the superconducting coil 1 is embedded in the receiving groove S1, the cover 23 can be connected to the side of the carrier 22 away from the support 21 by bolts, thereby sealing the superconducting coil 1 and preventing it from falling out of the receiving groove S1.

[0083] By providing the cover 23, the superconducting coil 1 is prevented from detaching from the support assembly 2 during rotation, thus improving operational reliability. Furthermore, the alternating arrangement of the second bend 232 on the cover 23 and the first bend 222 on the support member 22 creates a split, hollow structure, significantly increasing the contact area between the superconducting coil 1 and the cooling medium. This results in faster cooling of the superconducting magnet 100 in the assembled generator, further reducing cooling power loss and operating costs. It should be noted that the above embodiments of this application only illustrate the assembly method using a generator as an example. However, the application of the generator in this application is not limited to the following embodiments; it can also be installed in Dewar structures in other fields for protection.

[0084] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A superconducting magnet (100), characterized in that, include: The superconducting coil (1) is in the form of a closed loop and has a predetermined length and width; A support assembly (2) is provided to support the superconducting coil (1). The support assembly (2) includes a plurality of support units (20) spaced apart along the annular trajectory of the superconducting coil (1). Each support unit (20) includes a support member (21) and a carrier member (22). The carrier member (22) is provided on one side of the support member (21) in the axial direction (Z) of the superconducting coil (1) and forms a receiving groove (S1). The superconducting coil (1) is received in the receiving groove (S1) of each support unit (20). The support member (21) protrudes from the superconducting coil (1) on the other side in the axial direction (Z). The plurality of support units (20) include a first support unit (210) and a second support unit (220). The first support unit (210) extends along the length direction (X) of the superconducting coil (1), and the second support unit (220) extends along the width direction (Y) of the superconducting coil (1). The elastic coefficient of at least a portion of the structure of the second support unit (220) is greater than that of the first support unit (210).

2. The superconducting magnet (100) according to claim 1, characterized in that, The carrier (22) includes: The first main body (221) is connected to the support member (21); The first bending portion (222) is connected at one end to the first main body portion (221) and the other end is bent away from the support member (21). The first main body portion (221) and the first bending portion (222) form the receiving groove (S1).

3. The superconducting magnet (100) according to claim 2, characterized in that, The support unit (20) further includes a cover (23), which includes: The second main body (231) covers the side of the first main body (221) opposite to the support member (21); The second bending portion (232) is connected at one end to the second main body portion (231) and at the other end is bent toward the support member (21). The bending direction of the second bending portion (232) is opposite to that of the first bending portion (222) so as to fix the superconducting coil (1) in the receiving groove (S1).

4. The superconducting magnet (100) according to claim 3, characterized in that, Multiple first bends (222) are spaced apart on the same first main body (221), and multiple second bends (232) are spaced apart on the same second main body (231). The first bends (222) and the second bends (232) are spaced apart and alternately arranged along the circular trajectory.

5. The superconducting magnet (100) according to claim 2, characterized in that, The first bending portion (222) is an elastic structure. The first bending portion (222) can deform under the action of external force to change the size of the receiving groove (S1).

6. The superconducting magnet (100) according to any one of claims 1 to 5, characterized in that, The superconducting coil (1) is in the shape of a polygonal ring.

7. The superconducting magnet (100) according to claim 6, characterized in that, Each of the support members (21) includes a connecting part (211) and a base (212). One end of the connecting part (211) is connected to the bearing member (22) and the other end is connected to the base (212). The base (212) of the first support unit (210) extends along the width direction (Y).

8. The superconducting magnet (100) according to claim 7, characterized in that, The dimension of the connecting portion (211) of the second support unit (220) along the length direction (X) is smaller than the dimension of the connecting portion (211) of the first support unit (210) along the width direction (Y).

9. The superconducting magnet (100) according to claim 7, characterized in that, The support member (21) further includes two or more protrusions (213), each of the protrusions (213) protruding from the side surface of the base (212) away from the connecting part (211), and a gap groove (S2) is formed between two adjacent protrusions (213).

10. The superconducting magnet (100) according to claim 7, characterized in that, The superconducting coil (1) is symmetrically provided with the first support unit (210) along the width direction (Y), and the superconducting coil (1) is symmetrically provided with the second support unit (220) at both ends along the length direction (X).

11. The superconducting magnet (100) according to claim 7, characterized in that, The distance between the end of the connecting part (211) connected to the support member (22) and the end of the connecting part (211) connected to the base (212) can be increased or decreased.

12. The superconducting magnet (100) according to claim 1, characterized in that, The carrier (22) and the support (21) are an integral structure.

13. The superconducting magnet (100) according to claim 1, characterized in that, The superconducting magnet (100) also includes a cooling element (3), which is at least partially attached to the superconducting coil (1) to cool the superconducting coil (1).

14. A generator comprising a vacuum chamber (S3) and a superconducting magnet (100) as claimed in any one of claims 1-13, the superconducting magnet (100) being disposed within the vacuum chamber (S3).

15. A method for assembling a generator, characterized in that, include: A vacuum cavity (S3) and a superconducting magnet (100) are provided. The superconducting magnet (100) includes a support assembly (2) and a superconducting coil (1). The superconducting coil (1) has a predetermined length and width. The support assembly (2) includes a plurality of support units (20). Each support unit (20) includes a support member (21) and a carrier member (22). The carrier member (22) has a receiving groove (S1) on the side away from the support member (21). The plurality of support units (20) include a first support unit (210) and a second support unit (220). The first support unit (210) extends along the length direction (X) of the superconducting coil (1). The second support unit (220) extends along the width direction (Y) of the superconducting coil (1). The elastic coefficient of at least a portion of the structure of the second support unit (220) is greater than that of the first support unit (210). Each of the aforementioned support members (21) is disposed within the vacuum cavity (S3); The superconducting coil (1) is embedded in the receiving groove (S1) of each of the carriers (22). The vacuum cavity is encapsulated (S3).

16. The method for assembling a generator according to claim 15, characterized in that, The support unit (20) further includes a cover (23), and after the superconducting coil (1) is embedded into the receiving groove (S1) of each of the carriers (22), the assembly method further includes: The cover (23) is placed over each of the carriers (22) on the side opposite to the support (21) to fix the superconducting coil (1) in the receiving groove (S1).

17. The generator assembly method according to claim 15, wherein the vacuum chamber (S3) is provided with an installation position, the installation position is a plane, and the plane is provided with an installation hole for installing the support component.

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