Annular structure and supporting device for vacuum chamber outside superconducting magnet

Abstract

The utility model discloses an annular structure and a supporting device for a vacuum chamber outside a superconducting magnet, the annular structure comprises N arc-shaped parts and N fastening parts, the N arc-shaped parts are sequentially connected to form an annular shape, and N is greater than or equal to 2. Each arc-shaped part comprises a first edge and a second edge which are oppositely arranged, the first edge is provided with a first threaded hole, and the second edge is provided with a second threaded hole; the first end of each fastening part is provided with a first thread matched with the first threaded hole, the first end of each fastening part is in threaded connection with the first threaded hole of one arc-shaped part through the first thread, and the second end of each fastening part is provided with a second thread matched with the second threaded hole; and the second end of the fastening part is in threaded connection with the second threaded hole of the other arc-shaped part through the second thread. The supporting device with the annular structure can ensure the concentricity between adjacent shell rings and effectively prevent or limit the shell rings from deviating or deforming when the shell rings of the external vacuum chamber are assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of superconducting technology and its supporting equipment, in particular to a ring structure and a supporting device for a vacuum chamber outside a superconducting magnet. Background Art

[0002] With the rapid development of superconducting technology, superconducting magnets are becoming increasingly important in fields such as high-energy physics, power generation, and medical imaging. Their powerful magnetic field generation capabilities and ability to maintain a superconducting state at extremely low temperatures, significantly reducing energy loss, make them indispensable equipment in these fields.

[0003] Superconducting magnets typically consist of superconducting coils, a support system, an excitation power supply, a cryogenic control system, a quench protection system, and a magnetic flux leakage shielding system. The cryogenic control system, through components such as a refrigerator and helium circuit, maintains the superconducting coils in their extremely low superconducting state. The cryogenic control system is crucial for the stable operation of superconducting magnets and includes components such as the refrigerator, helium circuit, thermal radiation shield, and an external vacuum chamber.

[0004] The outer vacuum chamber provides a vacuum environment for the superconducting coils to reduce the impact of thermal radiation on them. A thermal radiation shield is placed between the outer vacuum chamber and the superconducting coils to intercept thermal radiation from the outer vacuum chamber and protect the superconducting coils from high temperatures.

[0005] The external vacuum chamber is an important component of a superconducting magnet, and its size and shape have a significant impact on the performance of the superconducting magnet. However, during the actual manufacturing and installation process, the external vacuum chamber faces the following technical challenges:

[0006] (1) High dimensional accuracy requirements: If the dimensional error of the external vacuum chamber is too large, it will be impossible to install and fix it with the leakage magnetic shielding system, thus affecting the overall performance of the superconducting magnet.

[0007] (2) Difficulty in ensuring concentricity during cylinder segment assembly: When the outer vacuum chamber is long, multiple cylinder segments need to be welded together to the required length. However, it is difficult to ensure concentricity during assembly of multiple cylinder segments, and the shrinkage and deformation of the cylinder segments after welding are uncontrolled, resulting in unqualified dimensions of the outer vacuum chamber.

[0008] In order to solve at least one of the above technical problems, the present invention proposes a ring-shaped structure and a supporting device for a vacuum chamber outside a superconducting magnet. Utility Model Content

[0009] The purpose of the utility model is to provide an annular structure and a supporting device for an external vacuum chamber of a superconducting magnet, which can ensure the concentricity between adjacent cylinder segments when assembling the cylinder segments of the external vacuum chamber and effectively prevent or limit the displacement or deformation of the cylinder segments.

[0010] The purpose of this utility model is achieved by the following technical solutions:

[0011] In one aspect, the present invention provides a ring structure comprising:

[0012] N arc-shaped portions are sequentially connected to form a ring, each arc-shaped portion includes a first side and a second side that are oppositely arranged, a first threaded hole is formed on the first side, and a second threaded hole is formed on the second side;

[0013] N fastening portions, each of the fastening portions having a first thread on a first end thereof matching the first threaded hole, the first end of the fastening portion being threadedly connected to the first threaded hole of one of the arcuate portions via the first thread, and each of the fastening portions having a second thread on a second end thereof matching the second threaded hole, the second end of the fastening portion being threadedly connected to the second threaded hole of another of the arcuate portions via the second thread;

[0014] Wherein, N is a positive integer greater than or equal to 2.

[0015] The beneficial effects of the above scheme are as follows: the annular structure of the utility model is composed of N arc-shaped portions detachably connected by fastening portions, which makes the entire structure modular, simplifies the manufacturing and assembly process, makes the repair or replacement of individual components easier, and reduces maintenance costs; further, the annular structure is modularized so that each arc-shaped portion and fastening portion can be manufactured and tested separately, which not only reduces production complexity and cost, but also improves product quality. Furthermore, the annular structure is modularized so that the diameter and circumference of the annular structure can be easily adjusted by increasing or decreasing the number of arc-shaped portions. In addition, the fastening portions are threadedly connected at both ends to adjacent arc-shaped portions, so that those skilled in the art can fine-tune the diameter of the annular structure according to actual needs. Furthermore, the fastening portions are threadedly connected at both ends to adjacent arc-shaped portions to achieve the detachability of the annular structure, so that the entire annular structure can be quickly assembled and disassembled.

[0016] Furthermore, the arc-shaped portion includes:

[0017] A panel, wherein the panel is an arc-shaped surface, and the panel includes a third arc edge and a fourth arc edge that are oppositely arranged;

[0018] a first support bar, wherein the curvature of the first support bar is the same as the curvature of the third arc edge, and the first support bar is connected to the third arc edge;

[0019] The second support bar has a curvature that is the same as that of the fourth arc edge, and the second support bar is connected to the fourth arc edge.

[0020] The beneficial effect of the above solution is that the utility model provides a first support bar and a second support bar in the arc portion, thereby enhancing the structural strength of the arc portion and improving the overall stability and load-bearing capacity of the annular structure.

[0021] Furthermore, a hollow structure is provided on the panel.

[0022] The beneficial effect of the above solution is that the utility model provides a hollow structure on the panel, which reduces the weight of the annular structure and reduces the material cost.

[0023] Furthermore, the hollow structure includes a plurality of hollow elements arranged at equal intervals, and the hollow elements include circular, triangular, elliptical, square, polygonal or irregular shapes.

[0024] The beneficial effect of the above solution is that the hollow structure of the utility model adopts a plurality of hollow elements arranged at equal intervals, so that the annular structure is more beautiful and uniform while maintaining strength.

[0025] Furthermore, the number of the first threaded holes is 2, one first threaded hole is opened on the first end of the first support bar, and the other first threaded hole is opened on the first end of the second support bar;

[0026] The number of the second threaded holes is 2, one second threaded hole is opened on the second end of the first support bar, and the other second threaded hole is opened on the second end of the second support bar.

[0027] The beneficial effect of the above scheme is that: the utility model respectively opens a first threaded hole and a second threaded hole at the first end and the second end of the support bar, so that the fastening part can more firmly connect the two adjacent arc parts, thereby improving the connection stability and load-bearing capacity of the annular structure.

[0028] Furthermore, the fastening portion includes:

[0029] a first fastener, wherein the first end of the first fastener is provided with the first thread, and the first end of the first fastener is threadedly connected to one of the first threaded holes of one of the arcuate portions; and the second end of the first fastener is provided with the second thread, and the second end of the first fastener is threadedly connected to one of the second threaded holes of another of the arcuate portions;

[0030] A second fastener, wherein the first thread is provided on the first end of the second fastener, and the first end of the second fastener is threadedly connected to another first threaded hole of one of the arc-shaped portions; the second thread is provided on the second end of the second fastener, and the second end of the second fastener is threadedly connected to another second threaded hole of another of the arc-shaped portions.

[0031] The beneficial effect of the above solution is that: by providing the first fastener and the second fastener, the utility model enables the fastening portion to more firmly connect the two adjacent arc-shaped portions, thereby improving the connection stability and load-bearing capacity of the annular structure.

[0032] Furthermore, the first thread is a positive thread, and the second thread is a negative thread;

[0033] The first fastener and the second fastener both include:

[0034] Fastener body;

[0035] A fixing block is covered on the middle part of the fastener body and is an integral injection molded part with the fastener body.

[0036] The beneficial effect of the above solution is that the first thread of the utility model is a straight thread and the second thread is a reverse thread, making the fastening portion less likely to loosen when subjected to external forces, thereby improving the connection stability and security of the annular structure. At the same time, the fixing block increases the structural strength of the integrally injected fastener.

[0037] Furthermore, N is equal to 2;

[0038] The central angle of each arc-shaped portion is 180°.

[0039] The beneficial effect of the above solution is that the utility model forms a circular ring structure, which makes the ring structure more stable.

[0040] Furthermore, the arc-shaped portion includes a first arc surface and a second arc surface that are oppositely arranged, and the first arc surface faces the central angle of the arc-shaped portion.

[0041] The annular structure further comprises:

[0042] One or more lifting ears, each of the lifting ears is arranged on the first arc surface.

[0043] The beneficial effect of the above solution is that: the utility model provides a lifting lug on the first arc surface of the arc-shaped portion, which facilitates the lifting and fixing of the annular structure and improves the installation convenience and flexibility of the annular structure.

[0044] On the other hand, the present invention provides a support device for a vacuum chamber outside a superconducting magnet, wherein the vacuum chamber comprises two or more cylinder segments connected in series, each of the cylinder segments being hollow and penetrating;

[0045] The supporting device includes a plurality of the annular structures, and the arc portion of each annular structure includes a first arc surface and a second arc surface that are oppositely arranged, and the second arc surface is away from the central angle of the arc portion;

[0046] The second curved surface includes:

[0047] an upper portion, the upper portion abutting against an inner wall of one of the barrel sections;

[0048] A lower portion abuts against an inner wall of a barrel segment adjacent to the barrel segment.

[0049] The beneficial effects of the above scheme are:

[0050] The support device is provided by the arrangement of multiple annular structures, and the arc portion of each annular structure includes a first arc surface and a second arc surface arranged opposite to each other, wherein the second arc surface deviates from the central angle of the arc portion and is divided into an upper portion and a lower portion, which respectively abut against the inner walls of two adjacent cylinder segments, so that when assembling the cylinder segments (e.g., welding), the concentricity between the adjacent cylinder segments can be ensured by adjusting the position and posture of the annular structure. In addition, during the welding process of the cylinder segments, the cylinder segments are often deformed due to the effects of high temperature and stress. The support device of the present invention provides a stable support surface for the cylinder segments by tightly abutting the second arc surface of its annular structure against the inner wall of the cylinder segment. Since the annular structure has rigidity and stability, the support surface can effectively prevent or limit the cylinder segments from being offset or deformed during the assembly (e.g., welding) process, making the size of the cylinder segments after welding more accurate.

[0051] Compared with the prior art, the beneficial effects of the present invention include at least:

[0052] The annular structure of the present invention is composed of N arcuate portions detachably connected by fastening portions, making the entire structure modular, simplifying the manufacturing and assembly process, facilitating the repair or replacement of individual components, and reducing maintenance costs. Furthermore, the modularization of the annular structure allows each arcuate portion and fastening portion to be manufactured and tested separately, reducing production complexity and costs while also improving product quality. Furthermore, the modularization of the annular structure allows the diameter and circumference of the annular structure to be easily adjusted by increasing or decreasing the number of arcuate portions.

[0053] Furthermore, threading the ends of the fastening portion to the adjacent arcuate portions allows those skilled in the art to fine-tune the diameter of the annular structure as needed. Furthermore, threading the ends of the fastening portion to the adjacent arcuate portions allows for detachable annular structure, enabling rapid assembly and disassembly of the entire annular structure.

[0054] The upper and lower parts of the arc-shaped portion of the support device of the present invention respectively abut against the inner walls of two adjacent cylinder segments, so that when assembling (for example, welding) the cylinder segments, the concentricity between adjacent cylinder segments can be ensured by adjusting the position and posture of the annular structure.

[0055] In addition, during the welding process of the cylinder segment, the support device of the present invention provides a stable support surface for the cylinder segment through the tight contact between the second arc surface of its annular structure and the inner wall of the cylinder segment, which can effectively prevent or limit the cylinder segment from being offset or deformed during the assembly process (for example, welding), so that the size of the cylinder segment after welding is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a structural diagram of the ring structure of an embodiment of the utility model.

[0057] Figure 2 It is a structural schematic diagram of the fastening part of an embodiment of the utility model.

[0058] Figure 3 This is a structural diagram of a panel according to an embodiment of the present invention.

[0059] Figure 4 It is a structural schematic diagram of the arc portion of an embodiment of the present utility model.

[0060] In the figure: 1. arc-shaped portion; 111. first side; 112. second side; 12. panel; 121. first arc side; 122. second arc side; 123. third arc side; 124. fourth arc side; 125. hollow structure; 13. first support bar; 14. second support bar; 15. upper part; 16. lower part; 17. second arc surface; 18. first arc surface; 2. fastening portion; 21. fastener body; 22. fixing block. DETAILED DESCRIPTION

[0061] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0062] The words expressing positions and directions described in this utility model are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of this utility model.

[0063] In order to solve the problems of poor concentricity of cylinder segments and large deformation after welding when assembling cylinder segments of an external vacuum chamber, the utility model proposes an annular structure and a supporting device for the external vacuum chamber of a superconducting magnet.

[0064] In order to modularize the annular structure, the annular structure of the present invention comprises: N arc-shaped parts 1 and N fastening parts 2 connected in sequence to form an annular shape, Figure 1. Wherein, N is a positive integer and is greater than or equal to 2, for example: 2, 3, 4, 5, 6, 7, 8, 9 or 10. Modularizing the annular structure not only simplifies the manufacturing and assembly process, but also makes it easier to repair or replace individual components, thereby reducing maintenance costs. Since each arc portion 1 and fastening portion 2 can be manufactured and tested separately, it not only reduces production complexity and cost, but also improves product quality. By increasing or decreasing the number of arc portions 1, the diameter and circumference of the annular structure can be easily adjusted to meet the requirements of external vacuum chambers of different sizes and shapes. Furthermore, in order to increase the installation convenience and flexibility of the annular structure, the annular structure of the utility model may also include: one or more lifting ears.

[0065] refer to Figure 3 , each arc-shaped portion 1 of the utility model includes a first arc surface 18 and a second arc surface 17 arranged opposite to each other. Among them, the first arc surface 18 faces the central angle of the arc-shaped portion 1, and the second arc surface 17 faces away from the central angle of the arc-shaped portion 1. When used, the sum of the central angles of each arc-shaped portion 1 is 360°. In some preferred embodiments, N is equal to 2, and the central angle of each arc-shaped portion 1 is 180°, forming a stable circular annular structure. Dividing the annular structure into two symmetrical modules can not only maintain the advantages of modularization, but also avoid the increase in the cost of parts replacement due to too many modules and the difficulty of increasing the accuracy during the production process (the more modules, the more parts that need to be proofread, which increases the workload of calibration and increases the chance of reduced product accuracy).

[0066] Each arcuate portion 1 of the present invention includes a first side 111 and a second side 112 arranged opposite each other, both of which are perpendicular to the diameter of the annular structure. In use, a first threaded hole is formed on the first side 111, and a second threaded hole is formed on the second side 112. The first end of each fastening portion 2 is provided with a first thread that matches the first threaded hole, and the first end of the fastening portion 2 is threadedly connected to the first threaded hole of one arcuate portion 1 via the first thread. The second end of each fastening portion 2 is provided with a second thread that matches the second threaded hole, and the second end of the fastening portion 2 is threadedly connected to the second threaded hole of another arcuate portion 1 via the second thread. In actual use, N arcuate portions 1 can be connected end to end using the fastening portion 2 to form an annular structure. Furthermore, the diameter of the annular structure can be adjusted by rotating the fastening portion 2 to adjust the connection depth between the first end of the fastening portion 2 and the first threaded hole, as well as the connection depth between the second end of the fastening portion 2 and the second threaded hole. Furthermore, those skilled in the art can also control the range of adjustment of the annular structure's diameter by appropriately adjusting the lengths of the second thread and the first thread.

[0067] refer to Figure 1 The arc portion 1 of the present invention includes: a panel 12, a first support bar 13 and a second support bar 14. Figure 3The panel 12 is an arc-shaped surface and includes a first arc edge 121 and a second arc edge 122, and a third arc edge 123 and a fourth arc edge 124. The first arc edge 121 and the second arc edge 122 are both perpendicular to the diameter direction of the annular structure, and the first arc edge 121 and the second arc edge 122 are both perpendicular to the third arc edge 123 and the fourth arc edge 124.

[0068] In order to reduce the weight of the annular structure and lower the material cost, a hollow structure 125 is provided on the panel 12 of the present invention. When used, the hollow structure 125 includes a plurality of hollow elements arranged at equal intervals, so that the annular structure is more beautiful and uniform while maintaining strength. Specifically, the hollow elements include circular, triangular, elliptical, square, polygonal or other special shapes. In actual application, the hollow structure 125 can provide a sufficiently large operating space for welding between external devices (for example: the cylinder section of the vacuum chamber outside the superconducting magnet), thereby improving the feasibility of the present invention.

[0069] In some preferred embodiments, the first arc edge 121 and the second arc edge 122 are partially removed by hollowing out, forming a reserved space for operating the fastening part 2 together with the first support bar 13 and the second support bar 14, thereby improving the convenience of disassembly, assembly and diameter adjustment of the annular structure.

[0070] refer to Figure 1 and Figure 3 The curvature of the first support bar 13 is the same as that of the third arc edge 123, and the first support bar 13 is connected to the third arc edge 123. The curvature of the second support bar 14 is the same as that of the fourth arc edge 124, and the second support bar 14 is connected to the fourth arc edge 124, so as to enhance the structural strength of the arc portion 1 and improve the overall stability and load-bearing capacity of the annular structure.

[0071] In some preferred embodiments, in order to more firmly connect the two adjacent arc-shaped portions 1 and improve the connection stability and load-bearing capacity of the annular structure, the number of the first threaded hole, the second threaded hole and the fasteners in the fastening portion 2 are all set to 2. Specifically, the two first threaded holes are respectively denoted as A1 and A2, one first threaded hole A1 is opened on the first end of the first support bar 13, and the other first threaded hole A2 is opened on the first end of the second support bar 14. The two second threaded holes are respectively denoted as B1 and B2, one second threaded hole B1 is opened on the second end of the first support bar 13, and the other second threaded hole B2 is opened on the second end of the second support bar 14. Furthermore, the fastening portion 2 includes: a first fastener and a second fastener. When applied, the two adjacent arc-shaped portions 1 are respectively denoted as C1 and C2. The first end of the first fastener is provided with a first thread, which is threadedly connected to a first threaded hole A1 of one arcuate portion C1. The second end of the first fastener is provided with a second thread, which is threadedly connected to a second threaded hole B1 of another arcuate portion C2. The first end of the second fastener is provided with a first thread, which is threadedly connected to another first threaded hole A2 of one arcuate portion C1. The second end of the second fastener is provided with a second thread, which is threadedly connected to another second threaded hole B2 of another arcuate portion C2. In actual application, to make the fastening portion 2 less likely to loosen when subjected to external force and to improve the connection stability and security of the annular structure, the first thread is a normal thread and the second thread is a reverse thread, or the second thread is a normal thread and the first thread is a reverse thread.

[0072] refer to Figure 2 The first and second fasteners of the present invention each comprise an integrally molded fastener body 21 and a fixing block 22. The fixing block 22 wraps around the center of the fastener body 21, enhancing the fastener's structural strength. During use, the fixing block 22 provides a force-bearing location when adjusting the fastener, while also increasing the reserved space and further enhancing operational convenience.

[0073] In some preferred embodiments, to facilitate hoisting and securing of the annular structure, lifting lugs are installed on the first curved surface 18. In practice, each lifting lug is mounted on the first support bar 13 and / or the second support bar 14. In actual practice, two or more lifting lugs are evenly spaced on the inner surface of the first support bar 13.

[0074] In summary, the annular structure of the present invention is composed of N arc-shaped portions 1 detachably connected by fastening portions 2, which makes the entire structure modular, simplifies the manufacturing and assembly process, makes the repair or replacement of individual components easier, and reduces maintenance costs; further, the annular structure is modularized so that each arc-shaped portion 1 and fastening portion 2 can be manufactured and tested separately, which not only reduces production complexity and cost, but also improves product quality. Furthermore, the annular structure is modularized so that the diameter and circumference of the annular structure can be easily adjusted by increasing or decreasing the number of arc-shaped portions 1. In addition, the fastening portion 2 is threadedly connected at both ends to the adjacent arc-shaped portions 1, so that those skilled in the art can fine-tune the diameter of the annular structure according to actual needs. Furthermore, the fastening portion 2 is threadedly connected at both ends to the adjacent arc-shaped portions 1 to achieve the detachability of the annular structure, so that the entire annular structure can be quickly assembled and disassembled.

[0075] The outer vacuum chamber of the superconducting magnet of the present invention comprises two or more cylinder segments connected in sequence, each cylinder segment is hollow and penetrates through. When in use, adjacent cylinder segments are welded together.

[0076] The supporting device of the utility model for the outer vacuum chamber of a superconducting magnet comprises a plurality of the above-mentioned annular structures.

[0077] refer to Figure 4 The second arc surface 17 of each annular structure of the present invention includes an upper portion 15 and a lower portion 16. In practice, two adjacent cylinder segments are designated D1 and D2. The upper portion 15 of the second arc surface 17 abuts against the inner wall of one cylinder segment D1, while the lower portion 16 of the second arc surface 17 abuts against the inner wall of the other cylinder segment D2 adjacent to cylinder segment D1.

[0078] In summary, the support device is provided with a plurality of annular structures, and the arc portion 1 of each annular structure includes a first arc surface 18 and a second arc surface 17 that are relatively arranged, wherein the second arc surface 17 deviates from the central angle of the arc portion 1 and is divided into an upper portion 15 and a lower portion 16, which respectively abut against the inner walls of two adjacent cylinder segments, so that when assembling (for example, welding) the cylinder segments, the concentricity between the adjacent cylinder segments can be ensured by adjusting the position and posture of the annular structure. In addition, during the welding process of the cylinder segments, the cylinder segments are often deformed due to the effects of high temperature and stress, and the support device of the present invention provides a stable support surface for the cylinder segment through the tight abutment between the second arc surface 17 of its annular structure and the inner wall of the cylinder segment. Since the annular structure has rigidity and stability, the support surface can effectively prevent or limit the cylinder segment from being offset or deformed during the assembly (for example, welding), so that the size of the cylinder segment after welding is more accurate.

[0079] During the specific use of the supporting device, steps S1 to S7 are performed.

[0080] Step S1: Prepare two arc-shaped portions 1 with a central angle of 180° and two sets of matching fastening portions 2. Use a first fastener and a second fastener to connect the two fastening portions 2 into a ring structure.

[0081] When used, the annular structure consists of two arc-shaped parts with a central angle of 180° and a matching fastening part, which makes the assembly, disassembly and diameter adjustment process of the annular structure easier, improves work efficiency and reduces work difficulty.

[0082] In actual application, the arc portion 1 is moved into the inner side of the cylinder segment by means of the lifting lugs using a lifting device, and the annular structure is installed on the inner side of the cylinder segment.

[0083] Step S2: By adjusting the tightness of the first fastener and the second fastener of the double-threaded structure, the outer diameter of the annular structure is minimized to ensure that the annular structure can be tightly fitted with the cylinder section in the subsequent process, thereby reducing errors in the welding process.

[0084] During use, the diameter of the annular structure is adjusted by adjusting the depth of the connection between the first end of the fastener and the first threaded hole, as well as the depth of the connection between the second end of the fastener and the second threaded hole. In actual use, when the depth of the connection between the first end of the fastener and the first threaded hole and the depth of the connection between the second end of the fastener and the second threaded hole are both maximum, the outer diameter of the annular structure is at its minimum.

[0085] Step S3: The assembled annular structure is positioned at the desired welding location between two adjacent cylinder segments. Specifically, the upper portion 15 of the second curved surface 17 abuts the inner wall of one cylinder segment D1, while the lower portion 16 of the second curved surface 17 abuts the inner wall of the other cylinder segment D2 adjacent to cylinder segment D1. Ensure that the center of the annular structure coincides with the center of the cylinder segment to ensure concentricity between the two adjacent cylinder segments after welding.

[0086] During application, ensuring the concentricity of two adjacent cylinder segments can reduce vibration and noise during subsequent use and improve the overall performance of the superconducting magnet. In actual application, the annular structure is suspended on the inner side of the cylinder segment using a lifting device through the lifting lugs.

[0087] Step S4: Adjust the first and second fasteners again to ensure that the second curved surface 17 of the annular structure is tightly fitted to the inner wall of the cylinder segment. Specifically, professional measuring tools can be used to check the tightness of the fit to ensure that there is no obvious gap or misalignment between the second curved surface 17 and the inner wall of the cylinder segment.

[0088] During use, the diameter of the annular structure is adjusted by adjusting the first and second fasteners, achieving an interference fit between the annular structure and the cylinder segment. This eliminates the need for a separate positioning base or lifting device, increasing the working space for welders. In actual use, removing the lifting device leaves ample working space for welders, reducing welding difficulty and improving welding quality.

[0089] Step S5: The welding personnel perform welding operations through the operating space formed by the hollow structure 125 to firmly weld the weld between the two adjacent cylinder sections.

[0090] Step S6: After a portion of the weld is completed, the first and second fasteners are adjusted to allow the annular structure to rotate freely. The annular structure is rotated a certain angle so that the unwelded area is positioned within the operating space formed by the hollow structure 125. The first and second fasteners are adjusted again to ensure that the second curved surface 17 of the annular structure is tightly fitted to the inner wall of the barrel segment.

[0091] During use, the hoisting device is used to hoist the annular structure through the hoisting lugs, and then the first fastener and the second fastener are adjusted.

[0092] Step S7: Repeat steps S5 and S6 until the entire weld seam of the two adjacent cylinder sections is welded. After welding is completed, the weld seam needs to be inspected to ensure that there are no obvious defects such as cracks, slag inclusions, etc.

[0093] From the above embodiments, it can be seen that the annular structure of the present invention is simple and the operation is flexible and convenient, which not only improves the efficiency of installation and commissioning, but also improves the quality of the outer vacuum chamber of the superconducting magnet.

[0094] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the utility model without departing from the principles and purpose of the utility model. All of these changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A ring structure, characterized in that: include: N arc-shaped portions (1) are connected in sequence to form a ring, each arc-shaped portion (1) comprising a first side (111) and a second side (112) arranged opposite to each other, a first threaded hole being provided on the first side (111), and a second threaded hole being provided on the second side (112); N fastening parts (2), each fastening part (2) having a first thread matched with the first threaded hole on its first end, the first end of the fastening part (2) being threadedly connected to the first threaded hole of one arc-shaped part (1) through the first thread, each fastening part (2) having a second thread matched with the second threaded hole on its second end, the second end of the fastening part (2) being threadedly connected to the second threaded hole of another arc-shaped part (1) through the second thread; Wherein, N is a positive integer greater than or equal to 2.

2. The annular structure according to claim 1, characterized in that The arc-shaped portion (1) comprises: A panel (12), wherein the panel (12) is an arc-shaped curved surface, and the panel (12) comprises a third arc edge (123) and a fourth arc edge (124) that are arranged opposite to each other; a first support bar (13), wherein the curvature of the first support bar (13) is the same as the curvature of the third arc edge (123), and the first support bar (13) is connected to the third arc edge (123); A second support bar (14), the curvature of the second support bar (14) is the same as the curvature of the fourth arc edge (124), and the second support bar (14) is connected to the fourth arc edge (124).

3. The annular structure according to claim 2, characterized in that A hollow structure (125) is provided on the panel (12).

4. The annular structure according to claim 3, characterized in that: The hollow structure (125) includes a plurality of hollow elements arranged at equal intervals, and the hollow elements include circular, triangular, elliptical, square, polygonal or special shapes.

5. The annular structure according to claim 2, characterized in that: The number of the first threaded holes is 2, one of the first threaded holes is opened on the first end of the first support bar (13), and the other of the first threaded holes is opened on the first end of the second support bar (14); The number of the second threaded holes is 2, one of the second threaded holes is opened on the second end of the first support bar (13), and the other of the second threaded holes is opened on the second end of the second support bar (14).

6. The annular structure according to claim 5, characterized in that: The fastening portion (2) comprises: A first fastener, wherein the first end of the first fastener is provided with the first thread, and the first end of the first fastener is threadedly connected to a first threaded hole of one of the arc-shaped portions (1); and the second end of the first fastener is provided with the second thread, and the second end of the first fastener is threadedly connected to a second threaded hole of another of the arc-shaped portions (1); A second fastener, wherein the first thread is provided on the first end of the second fastener, and the first end of the second fastener is threadedly connected to another first threaded hole of one of the arc-shaped portions (1); and the second thread is provided on the second end of the second fastener, and the second end of the second fastener is threadedly connected to another second threaded hole of another of the arc-shaped portions (1).

7. The annular structure according to claim 6, characterized in that: The first thread is a positive thread, and the second thread is a negative thread; The first fastener and the second fastener both include: Fastener body (21); A fixing block (22) is covered on the middle part of the fastener body (21) and is an integral injection molded part with the fastener body (21).

8. The annular structure according to claim 1, characterized in that Said N is equal to 2; The central angle of each arc-shaped portion (1) is 180°.

9. The annular structure according to claim 1, characterized in that: The arc-shaped portion (1) comprises a first arc surface (18) and a second arc surface (17) arranged opposite to each other, wherein the first arc surface (18) faces the central angle of the arc-shaped portion (1). The annular structure further comprises: One or more lifting ears, each of the lifting ears is arranged on the first arc surface (18).

10. A supporting device for a superconducting magnet outer vacuum chamber, characterized in that: The vacuum chamber comprises two or more cylindrical sections connected in sequence, each of which is hollow and through-set; The supporting device comprises an annular structure according to any one of claims 1 to 9, wherein the arc portion (1) of each annular structure comprises a first arc surface (18) and a second arc surface (17) arranged opposite to each other, and the second arc surface (17) deviates from the central angle of the arc portion (1); The second arc surface (17) comprises: an upper portion (15), the upper portion (15) abutting against an inner wall of one of the barrel sections; A lower portion (16) is provided, wherein the lower portion (16) abuts against an inner wall of a barrel segment adjacent to the barrel segment.

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