Superconducting magnetic material support structure
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- CHINA THREE GORGES CORPORATION
- Filing Date
- 2024-12-06
- Publication Date
- 2026-08-06
AI Technical Summary
【0022】 本願の具体的な実施形態又は従来技術の技術的解決手段をより明確に説明するために、以下、具体的な実施形態又は従来技術の説明に必要な図面を簡単に説明し、明らかなように、以下説明される図面は本願のいくつかの実施形態であり、当業者であれば、創造的な労働をせずに、これらの図面に基づいてほかの図面を得ることができる。
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Figure 2026526118000001_ABST
Abstract
Description
Technical Field
[0001] [Cross-reference to Related Technologies] This application claims the priority of a Chinese patent application with application number 202410864052.7 and invention title "Superconducting Magnet Support Structure", which was filed with the Chinese Patent Office on June 28, 2024, and the entire content thereof is incorporated herein by reference.
[0002] [[ID=IO]] This application relates to the technical field of superconducting motors, and specifically to a superconducting magnet support structure.
Background Art
[0003] A superconducting motor is a motor that manufactures a stator or rotor magnet using a superconducting material. By applying the zero-resistance characteristic of the superconducting material, the superconducting magnet manufactured with the superconducting material can pass a much larger current than a conventional copper winding, thereby greatly improving the power density and torque density of the motor and significantly reducing the weight and size of the motor. Based on the above advantages, superconducting motors are widely used in fields such as wind power generation, ship propulsion, and aircraft engines.
[0004] Taking a superconducting motor with a superconducting magnet as the rotor magnet as an example, each superconducting magnet generates a strong electromagnetic force when operating in the motor and also receives a strong electromagnetic force exerted by other superconducting magnets. Therefore, a support structure for supporting the superconducting magnet is required. In a conventional superconducting magnet support structure, two torque tubes are provided at both ends of the superconducting magnet, and the superconducting magnet and the rotating shaft are connected through the torque tubes. That is, one end of the torque tube is connected to the superconducting magnet, and the other end is connected to the rotating shaft. However, in this support structure, the torque tube mainly plays a connecting role and cannot effectively and stably support the superconducting magnet, resulting in a poor support effect.
Summary of the Invention
Problems to be Solved by the Invention
[0005] Therefore, the technical problem that this application aims to solve is to overcome the drawback that conventional rotor magnetic material support structures cannot effectively and stably support superconducting magnetic materials, resulting in poor support performance, and to provide a superconducting magnetic material support structure with superior support performance. [Means for solving the problem]
[0006] To solve the above problem, the present invention includes a support assembly and an enclosure assembly, The superconducting magnetic material is provided in the support assembly, and the support assembly includes a rotor yoke and two support members, one of which has one end connected to one end of the rotor yoke and the other end connected to a first rotation axis, and the other support member has one end connected to the other end of the rotor yoke and the other end connected to a second rotation axis. The enclosure assembly includes two side plates and two end plates, the two side plates being provided on both sides of the superconducting magnetic material and the two end plates being provided on both ends of the superconducting magnetic material, and one of the end plates has its upper part connected to one end of the side plate and its lower part connected to one of the support members, and the other end plate has its upper part connected to the other end of the side plate and its lower part connected to the other support member, providing a superconducting magnetic material support structure.
[0007] Optionally, the superconducting magnetic material support structure further includes a filling assembly comprising a thermal insulation filling layer provided between the superconducting magnetic material and the support assembly.
[0008] Selectively, the filling assembly further includes a dewar provided between the bottom surface of the thermal insulation filling layer and the top surface of the support member, the dewar comprising a dewar outer layer and a dewar inner layer, wherein there is a vacuum between the dewar outer layer and the dewar inner layer, the dewar outer layer being closer to the support member side and the dewar inner layer being closer to the thermal insulation filling layer side.
[0009] Optionally, the support assembly further includes a support connecting member provided on the rotor yoke, the support connecting member having a threaded hole, and a fastener is screwed into the threaded hole through the superconducting magnetic material.
[0010] The support member optionally includes a support portion and first and second connecting portions extending downward along both sides of the support portion. The first connecting portion of one of the support members has its upper end connected to one of the end plates and its lower end connected to the first rotating shaft, and the second connecting portion is connected to one end of the rotor yoke. The first connecting portion of the other support member has its upper end connected to the other end plate and its lower end connected to the second rotating shaft, and the second connecting portion is connected to the other end of the rotor yoke.
[0011] The first connection is optionally connected to the first and second rotation shafts via a connecting member.
[0012] Insertion grooves are provided on both sides of the end plate for selection purposes, and the ends of the side plates are inserted into the insertion grooves.
[0013] Selectively, a projection is provided on the side wall of the insertion groove facing the side plate, and an engagement groove is provided on the side wall of the side plate facing the projection, and the projection engages with the engagement groove.
[0014] Selectively, the side plate includes a side plate portion and a cover plate portion that are provided at an angle, the angle being 90° or more, and the side plate portion is provided in the heat insulating filling layer.
[0015] The end plate may optionally include a shell and a filler material provided within the shell.
[0016] This application has the following advantages:
[0017] 1. The superconducting magnetic material support structure according to the present application includes a support assembly and an enclosure assembly. The superconducting magnetic material is provided in the support assembly, and the support assembly includes a rotor yoke and two support members, one of which has one end connected to one end of the rotor yoke and the other end connected to a first rotation axis, the other support member has one end connected to the other end of the rotor yoke and the other end connected to a second rotation axis, and the enclosure assembly includes two side plates and two end plates, the two side plates are provided on both sides of the superconducting magnetic material respectively, and the two end plates are provided on both ends of the superconducting magnetic material, the upper part of one end plate is connected to one end of the side plate and the lower part is connected to one support member, the upper part of the other end plate is connected to the other end of the side plate and the lower part is connected to the other support member. This support structure has two stress transmission paths: one transmits stress from the superconducting magnetic material to the rotor yoke, then from the rotor yoke to the support member, and further to the first and second rotation axes; the other transmits stress from the superconducting magnetic material to the side plates on both sides, then to the two end plates, further to the support member, and finally to the first and second rotation axes. The two stress transmission paths can generate different stress distributions, resulting in excellent torque transmission capability, the ability to decompose and cancel out the electromagnetic force acting on the superconducting magnetic material, stable support of the superconducting magnetic material, and superior support effect.
[0018] 2. The superconducting magnetic material support structure according to the present invention further includes a filling assembly, the filling assembly including a thermal insulation filling layer provided between the superconducting magnetic material and the support assembly, and a dewar provided between the bottom surface of the thermal insulation filling layer and the top surface of the support member. The dewar includes a dewar outer layer and a dewar inner layer, with a vacuum between the dewar outer layer and the dewar inner layer, the dewar outer layer being closer to the support member side, and the dewar inner layer being closer to the thermal insulation filling layer side. The provision of the filling assembly reduces heat leakage from the magnetic material and the support assembly, ensuring that the superconducting magnetic material is in a low-temperature environment in which it can operate normally.
[0019] 3. In the superconducting magnetic body support structure according to the present application, the support assembly further includes a support connection member provided on the rotor yoke. The support connection member has a threaded hole, and the fastener passes through the superconducting magnetic body and is screwed into the threaded hole. The superconducting magnetic body is fixed by the fastener and the support connection member, which is simple and rapid. Also, by transmitting torque to the rotor yoke through the support connection member, it is possible to avoid the heat insulation filling layer from receiving force.
[0020] 4. In the superconducting magnetic body support structure according to the present application, the support member includes a support portion, a first connection portion and a second connection portion that extend downward along both sides of the support portion. The support portion of this shape not only reduces consumables and weight, but also reduces the cross-sectional area and the heat leakage amount of the support member.
[0021] 5. In the superconducting magnetic body support structure according to the present application, insertion grooves are provided on both sides of the end plate, and the ends of the side plates are inserted into the insertion grooves. Further, protrusions are provided on the side walls facing the side plates of the insertion grooves, engaging grooves are provided on the side walls facing the protrusions of the side plates, and the protrusions are engaged with the engaging grooves. This connection structure can not only achieve the fastening connection between the end plate and the side plate, but also is easy to detach and attach.
[0022] To more clearly explain the specific embodiments of the present application or the technical solutions of the prior art, the following briefly describes the drawings necessary for the description of the specific embodiments or the prior art. As is clear, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative labor.
Brief Description of Drawings
[0023] [Figure 1] It is an isometric schematic view of the superconducting magnetic body support structure in the present application. [Figure 2] It is a front view of the superconducting magnetic body support structure in the present application. [Figure 3] It is a cross-sectional view of the superconducting magnetic body support structure in the present application. [Figure 4]This is a schematic diagram showing one side plate and one cover plate of the superconducting magnetic body support structure in the present application hidden. [Figure 5] This is a schematic diagram of the support member of the superconducting magnetic body support structure in the present application.
Embodiments for Carrying Out the Invention
[0024] Hereinafter, while referring to the drawings, the technical solution of the present application will be clearly and completely described. As is clear, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.
[0025] In the description of the present application, the orientation or positional relationship indicated by terms such as “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, etc. is the orientation or positional relationship based on the drawings, and is only for the convenience of the description of the present application and for simplifying the description. It should be understood that it does not indicate or imply that such a device or element must have a specific orientation or be configured and operated in a specific orientation, and thus does not limit the present application. Also, it should be understood that terms such as “first”, “second”, “third” are only used for the purpose of description and do not indicate or imply relative importance.
[0026] In the description of the present application, unless there are separate clear regulations and limitations, the terms “attachment”, “connection”, “connection” should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection, and may be a mechanical connection or an electrical connection, and may also be a direct connection, an indirect connection through an intermediate medium, or a communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.
[0027] Also, the technical features according to various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.
[0028] As shown in Figures 1 to 3, this is the superconducting magnetic material support structure of the present invention. This superconducting magnetic material support structure is applicable to supporting a superconducting magnetic material in a superconducting motor. Furthermore, this superconducting magnetic material support structure has a good torque transmission path and can achieve stable support of the superconducting magnetic material.
[0029] The superconducting magnetic material support structure described above includes a support assembly and an enclosure assembly. The support assembly includes a rotor yoke 11 and two support members 12, the two support members 12 being symmetrically positioned at both ends of the rotor yoke 11, and the two support members 12 having the same structure. Specifically, one support member 12 has one end connected to one end of the rotor yoke 11 and the other end connected to a first rotation axis, while the other support member 12 has one end connected to the other end of the rotor yoke 11 and the other end connected to a second rotation axis. The superconducting magnetic material is provided in the support assembly, with both ends of the superconducting magnetic material located on the two support members 12 and the remaining portion located on the rotor yoke 11. The enclosure assembly includes two side plates 21 and two end plates 22, the two side plates 21 being provided on both sides of the superconducting magnetic material and the two end plates 22 being provided at both ends of the superconducting magnetic material. One end plate 22 has its upper part connected to one end of the side plate 21 and its lower part connected to one support member 12, while the other end plate 22 has its upper part connected to the other end of the side plate 21 and its lower part connected to the other support member 12. First, this support structure achieves omnidirectional restriction of the superconducting magnetic material. Second, this support structure has two stress transmission paths. One stress transmission path transmits stress from the superconducting magnetic material to the rotor yoke 11, then from the rotor yoke 11 to the two support members 12, and further through the two support members 12 to the first and second rotation axes. The other stress transmission path transmits stress from the superconducting magnetic material to both side plates 21, then through the side plates 21 to the two end plates 22, further from the two end plates 22 to the two support members 12, and finally from the support members 12 to the first and second rotation axes. These two stress transmission paths can generate different stress distributions, resulting in superior torque transmission capabilities. They can decompose and cancel out the electromagnetic forces generated and received by the superconducting magnetic material, achieving stable support for the superconducting magnetic material and providing excellent support effects.
[0030] As optional, as shown in Figure 5, the support member 12 is preferably a torque tube, and the support member 12 includes a support portion 121, a first connecting portion 122 and a second connecting portion 123 extending downward along both sides of the support portion 121. The shapes of the first connecting portion 122 and the second connecting portion 123 are fan-shaped, that is, the upper surfaces of both the first connecting portion 122 and the second connecting portion 123 are curved, and the corresponding shape of the support portion 121 is arc-shaped. Also, the length of the first connecting portion 122 is shorter than the length of the second connecting portion 123.
[0031] The first connecting portion 122 of one support member 12 has its upper end connected to one end plate 22 and its lower end connected to the first rotation shaft, and its second connecting portion 123 is connected to one end of the rotor yoke 11. The first connecting portion 122 of the other support member 12 has its upper end connected to the other end plate 22 and its lower end connected to the second rotation shaft, and its second connecting portion 123 is connected to the other end of the rotor yoke 11. The second connecting portion 123 corresponds to the shape of the rotor yoke 11, and the cross-section of the second connecting portion 123 is the same as the shape and size of the end face of the rotor yoke 11.
[0032] Selectively, the first connection part 122 is connected to the first and second rotating shafts via the connecting member 4. The first and second rotating shafts correspond to the two axes of the rotor of the superconducting motor; one is the drive shaft, which can be connected to a driven device such as a gearbox, and the other is the passive shaft, which provides radial and axial support for the rotor. Specifically, the first connection part 122 and the end plate 22, and the first connection part 122 and the connecting member 4 are both connected via bolts, and the second connection part 123 and the rotor yoke 11 are also connected via bolts.
[0033] The support assembly further includes a support connecting member 13 provided on the rotor yoke 11, the support connecting member 13 having a threaded hole, and a fastener 14 that penetrates the superconducting magnetic material and is screwed into the threaded hole. Specifically, the support connecting member 13 is cylindrical and fixedly provided on the rotor yoke 11. In this embodiment, there are two support connecting members 13, which are spaced apart in the longitudinal direction of the rotor yoke 11. The superconducting magnetic material is provided with a countersunk hole, and the fastener 14 is preferably a countersunk bolt. When attaching the superconducting magnetic material, the countersunk hole of the superconducting magnetic material is aligned with the threaded hole of the support connecting member 13, and then the superconducting magnetic material and the support connecting member 13 are connected via the countersunk bolt. In this embodiment, the support connecting member 13 is made of epoxy resin glass fiber, which has high mechanical strength and low thermal conductivity, and not only is it strong and can transmit torque well, but heat leakage can also be reduced.
[0034] In other embodiments, the number of support connecting members 13 may be three, four, or the like.
[0035] Optionally, the superconducting magnetic material support structure further includes a filling assembly, which includes an insulating filling layer 31 provided between the superconducting magnetic material and the support assembly, the insulating filling layer 31 covering the regions of the rotor yoke 11 and the two support members 12, and is perforated to accommodate the support connecting member 13. The insulating filling layer 31 mainly provides an insulating function to reduce heat leakage from the outside and is made of epoxy resin glass fibers. The insulating filling layer 31 is provided below the superconducting magnetic material but does not serve a supporting role, and torque is transmitted by the support connecting member 13.
[0036] The filling assembly further includes a dewar placed between the bottom surface of the insulating filling layer 31 and the top surface of the support member 12. The dewar has a double-layer structure, comprising an outer dewar layer and an inner dewar layer, with a vacuum between the outer and inner dewar layers. The outer dewar layer is closer to the support member 12 side, and the inner dewar layer is closer to the insulating filling layer 31 side, so the dewar also plays an insulating role.
[0037] As shown in Figure 4, the end plate 22 of the enclosure assembly includes a shell and a filler material provided inside the shell. In this embodiment, the shell is made of steel, and the internal filler material is made of epoxy resin glass fiber, forming a dewar structure with heat insulation properties. In addition, insertion grooves are provided on both sides of the end plate 22 to facilitate connection with the side plate 21.
[0038] The side plate 21 includes a side plate portion 212 and a cover plate portion 213 that are provided at an angle, with the angle being 90° or more. Specifically, the side plate portion 212 is provided in the heat insulating filling layer 31, and one end of the cover plate portion 213 is connected to the upper end of the side plate portion 212, and the other end extends toward the opposite side plate 21. In this embodiment, the angle between the side plate portion 212 and the cover plate portion 213 is obtuse, meaning that the cover plate portion 213 is inclined upward from the side of the side plate portion 212 to which it is connected toward the side plate portion 212. The size of the side plate portion 212 gradually decreases from its upper end to its lower end. Furthermore, the length of the side plate portion 212 is greater than the length of the cover plate portion 213, meaning that the cover plate portion 213 does not extend to both ends of the side plate portion 212. In this way, both ends of the side plate portion 212 can be inserted into the insertion grooves of the end plate 22 and connected to the end plate 22.
[0039] A projection 221 is provided on the side wall of the insertion groove facing the side plate 21, and an engagement groove 211 is provided on the side wall of the side plate 21 facing the projection 221. When the side plate portion 212 is inserted into the insertion groove of the end plate 22, engagement between the projection 221 and the engagement groove 211 is achieved.
[0040] The superconducting magnetic material support structure is primarily used to mount superconducting magnetic materials. Superconducting magnetic materials require a low-temperature environment of 30K to 70K (K is the unit of temperature, Kelvin) to operate; otherwise, a quench phenomenon occurs, and the superconducting ability is lost. This superconducting magnetic material support structure has an excellent support effect, not only stably supporting the superconducting magnetic material but also minimizing heat leakage, thus ensuring a low-temperature operating environment for the superconducting magnetic material. Specifically, the superconducting magnetic material support structure has two stress transmission paths (one stress transmission path transmits stress from the superconducting magnetic material to the rotor yoke 11, then from the rotor yoke 11 to the two support members 12, and further to the first and second rotation axes via the two support members 12; the other stress transmission path transmits stress from the superconducting magnetic material to the side plates 21 on both sides, then from the side plates 21 to the two end plates 22, further from the two end plates 22 to the two support members 12, and finally from the support members 12 to the first and second rotation axes). These two paths are both stress transmission paths and heat leakage transmission paths. When the motor operates, heat is conducted from the outside through each member of the support structure, resulting in heat leakage. Firstly, the overall structure of the support structure is elongated, which lengthens the heat transmission paths and reduces heat leakage efficiency. Next, the cross-sectional areas of the support members, such as the roughly n-shaped support member 12 and the roughly L-shaped side plate 21, are relatively small, resulting in a smaller heat-receiving area and reduced heat leakage. Finally, in the heat leakage transfer path, a heat insulating filling layer 31 and end plates 22 made of a heat insulating material (epoxy resin glass fiber) with low thermal conductivity are provided, similarly significantly preventing heat leakage from the outside to the support device. Therefore, this superconducting magnetic material support structure not only has excellent support performance but also low heat leakage, ensuring that the superconducting magnetic material operates normally in low-temperature environments.
[0041] As is clear, the above embodiments are merely illustrative examples and do not limit the embodiments. Those skilled in the art can make various other modifications and changes based on the above description. It is neither necessary nor possible to list all embodiments here. Obvious modifications and changes derived therefrom are also covered within the scope of this patent application. [Explanation of Symbols]
[0042] 11 Rotor York 12 Support members 121 Support part 122 First connection section 123 Second connection section 13 Support connecting member 14 Fasteners 21 Side panel 211 Engagement groove 212 Side plate part 213 Cover plate section 22 End plate 221 Protrusion 31. Insulating filling layer 4 Connecting Members
Claims
1. A superconducting magnetic material support structure comprising a support assembly and an enclosure assembly, The superconducting magnetic material is provided in the support assembly, which includes a rotor yoke (11) and two support members (12), one of which has one end connected to one end of the rotor yoke (11) and the other end connected to a first rotation axis, and the other support member (12) has one end connected to the other end of the rotor yoke (11) and the other end connected to a second rotation axis. The enclosure assembly comprises two side plates (21) and two end plates (22), the two side plates (21) being provided on both sides of the superconducting magnetic material and the two end plates (22) being provided on both ends of the superconducting magnetic material, the upper part of one end plate (22) being connected to one end of the side plate (21) and the lower part being connected to one of the support members (12), and the upper part of the other end plate (22) being connected to the other end of the side plate (21) and the lower part being connected to the other support member (12), characterized in that the superconducting magnetic material support structure comprises two side plates (21) and two end plates (22), the two side plates (21) being provided on both sides of the superconducting magnetic material and the two end plates (22) being provided to both ends of the superconducting magnetic material, the upper part of the enclosure assembly comprises two side plates (21) and two end plates (22), the two side plates (21) being provided on both sides of the superconducting magnetic material and the two end plates (22) being provided to both ends of the superconducting magnetic material, the upper part of the one end plate (22) being connected to one end of the side plate (21) and the lower part being connected to the other support member (12).
2. The superconducting magnetic material support structure according to claim 1, further comprising a filling assembly including a heat insulating filling layer (31) provided between the superconducting magnetic material and the support assembly.
3. The superconducting magnetic material support structure according to claim 2, wherein the filling assembly further includes a dewar provided between the bottom surface of the thermal insulation filling layer (31) and the upper surface of the support member (12), the dewar comprising a dewar outer layer and a dewar inner layer, the space between the dewar outer layer and the dewar inner layer being a vacuum, the dewar outer layer being closer to the support member (12) side and the dewar inner layer being closer to the thermal insulation filling layer (31) side.
4. The superconducting magnetic material support structure according to claim 1, wherein the support assembly further includes a support connecting member (13) provided on the rotor yoke (11), the support connecting member (13) having a screw hole, and a fastener (14) passing through the superconducting magnetic material and being screwed into the screw hole.
5. The support member (12) includes a support portion (121), a first connecting portion (122) and a second connecting portion (123) extending downward along both sides of the support portion (121), The first connecting portion (122) of the support member (12) has its upper end connected to one of the end plates (22) and its lower end connected to the first rotating shaft, and the second connecting portion (123) is connected to one end of the rotor yoke (11). The superconducting magnetic material support structure according to claim 1, characterized in that the first connecting portion (122) of the other support member (12) has its upper end connected to the other end plate (22) and its lower end connected to the second rotating shaft, and the second connecting portion (123) is connected to the other end of the rotor yoke (11).
6. The superconducting magnetic material support structure according to claim 5, characterized in that the first connecting portion (122) is connected to the first rotating shaft and the second rotating shaft via a connecting member.
7. The superconducting magnetic material support structure according to claim 1, characterized in that insertion grooves are made on both sides of the end plate (22), and the ends of the side plate (21) are inserted into the insertion grooves.
8. The superconducting magnetic material support structure according to claim 7, characterized in that a projection (221) is provided on the side wall of the insertion groove facing the side plate (21), an engagement groove (211) is provided on the side wall of the side plate (21) facing the projection (221), and the projection (221) engages with the engagement groove (211).
9. The superconducting magnetic material support structure according to claim 2, characterized in that the side plate (21) includes a side plate portion (212) and a cover plate portion (213) provided at an angle, the angle being 90° or more, and the side plate portion (212) is provided in the heat insulating packing layer (31).
10. The superconducting magnetic material support structure according to any one of claims 1 to 9, characterized in that the end plate (22) includes a shell and a filler provided within the shell.