Fixing mechanism, fixing method and assembling method for superconducting magnet device

Abstract

The invention discloses a fixing mechanism, a fixing method and an assembling method for a superconducting magnet device, the fixing mechanism comprises a support assembly and a first mounting part fixed on the support assembly, the support assembly at least comprises two first supports oppositely arranged in the horizontal direction and a second support connected with the top ends of the two first supports, the first mounting piece is arranged on the second bracket; the first installation part is arranged to be of a fixing structure matched with a flange structure on the surface of the superconducting magnet device, and the superconducting magnet device can be detachably connected with the first installation part through the flange structure. Wherein the central axis of the Dewar is perpendicular to the first support and the second support, and the superconducting magnet device is kept in a vertical state. In the assembling process of the superconducting magnet device and the iron yoke, the superconducting magnet device is always kept in the vertical state, the superconducting magnet device does not need to be turned over by 90 degrees to be in the horizontal state, and the assembling risk caused by the fact that the superconducting magnet device needs to be turned over in the existing assembling process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of assembling a superconducting magnet device, and in particular to a fixing mechanism, a fixing method and an assembling method for a superconducting magnet device. Background Art

[0002] Superconducting magnets typically require assembly with an iron yoke, which provides magnetic field shaping, stray field shielding, and mechanical support. Typically, the iron yoke consists of two parts, which, when coupled together, create a housing within which the superconducting magnet is placed. As a core component for generating strong magnetic fields, the assembly process directly impacts the performance and reliability of the superconducting magnet.

[0003] The currently common method for assembling superconducting magnets and iron yokes primarily utilizes a horizontal, layered assembly process. During assembly, a lifting fixture is required to flip the vertical superconducting magnet assembly to a horizontal position for securement with the iron yoke. Because superconducting magnets can weigh several to tens of tons, the risks of lifting and flipping during assembly are significant and can negatively impact assembly efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a fixing mechanism, fixing method and assembly method for a superconducting magnet device, which can keep the superconducting magnet device in a vertical state during the assembly process, thereby avoiding the need to flip the superconducting magnet device in the existing assembly process.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] The present invention provides a fixing mechanism for a superconducting magnet device, the superconducting magnet device including a dewar, the outer cylinder wall of the dewar being provided with a plurality of flange structures, the fixing mechanism comprising: a bracket assembly and a first mounting member fixed to the bracket assembly, the bracket assembly including at least two first brackets arranged opposite each other in a horizontal direction and a second bracket connecting the top ends of the two first brackets, the first mounting member being provided on the second bracket; the first mounting member being provided as a fixing structure cooperating with the flange structure, and the superconducting magnet device being detachably connected to the first mounting member via the flange structure;

[0007] The central axis of the Dewar is perpendicular to the first bracket and the second bracket, and the superconducting magnet device remains in a vertical state.

[0008] As a further improvement of an embodiment of the present invention, the fixing mechanism further includes a lifting assembly, and the bracket assembly further includes a third bracket connecting the bottom ends of the two first brackets and a second mounting member fixed to the third bracket;

[0009] One end of the jacking assembly is detachably connected to the second mounting member, and the other end of the jacking assembly is connected to the outer cylinder wall of the Dewar for supporting the superconducting magnet device.

[0010] As a further improvement of one embodiment of the present invention, the jacking assembly includes at least a base, a jacking device fixed on the base, and a support portion connected to the outer cylinder wall of the Dewar. The jacking assembly is detachably connected to the second mounting member through the base. The jacking device is used to control the movement of the support portion in the vertical direction and apply a supporting force in the vertical direction to the support portion, so that the support portion abuts against the outer cylinder wall of the Dewar and supports the superconducting magnet device.

[0011] As a further improvement of an embodiment of the present invention, the support portion includes a support surface facing the Dewar, and the support surface is configured as an arc surface that matches the outer cylinder wall of the Dewar;

[0012] And / or, the support portion is made of non-metallic material.

[0013] As a further improvement of one embodiment of the present invention, the jacking assembly further includes a connecting portion connecting the jacking device and the support portion, the connecting portion including a first connecting portion and a second connecting portion fixedly connected, the second connecting portion being arranged below the first connecting portion, the first connecting portion being detachably connected to the support portion, and the second connecting portion being connected to the jacking device;

[0014] The lifting device is used to control the connection part to move in the vertical direction and apply a supporting force in the vertical direction to the connection part, so that the supporting part abuts against the outer cylinder wall of the Dewar and supports the superconducting magnet device through the connection part.

[0015] As a further improvement of one embodiment of the present invention, the jacking assembly further includes a pressure sensing device, which is arranged between the jacking device and the second connecting part and is used to obtain the size of the supporting force applied by the jacking device to the connecting part.

[0016] As a further improvement of one embodiment of the present invention, the connecting portion further includes a third connecting portion, the third connecting portion is fixed to the lower end surface of the second connecting portion, and the pressure sensing device is detachably connected to the third connecting portion.

[0017] As a further improvement of one embodiment of the present invention, the lifting assembly further comprises at least two guide shafts, all of which are evenly arranged around the circumference of the second connecting portion; a first groove is provided on the lower surface of the first connecting portion at a position corresponding to the guide shaft, and the size of the first groove is larger than the size of the guide shaft;

[0018] One end of the guide shaft is fixedly connected to the base, and the other end of the guide shaft extends into the first groove.

[0019] As a further improvement of one embodiment of the present invention, a guide sleeve is provided in the first groove, the guide sleeve is provided with a guide groove that cooperates with the guide shaft, and the other end of the guide shaft passes through the guide groove and extends into the first groove;

[0020] And / or, the first groove extends to the upper surface of the first connecting portion and passes through the first connecting portion, and a second groove is provided on the lower surface of the supporting portion at a position corresponding to the first groove, and the second groove has the same size as the first groove;

[0021] The guide shaft also extends into the second groove.

[0022] As a further improvement of one embodiment of the present invention, the jacking device includes a power device and a jacking component arranged above the power device, the power device is fixed to the base, the power device is used to provide driving force and supporting force, and the jacking component is used to drive the support portion to move in a vertical direction toward the outer cylinder wall of the dewar according to the driving force provided by the power device, and apply a supporting force to the dewar when the support portion abuts against the outer cylinder wall of the dewar;

[0023] The jacking assembly also includes a fixing part that is detachably connected to the base, and the fixing part includes a fixing plate and multiple bolts. A through hole is set in the middle area of the fixing plate, and the fixing plate is connected to the upper surface of the power device through the through hole. The multiple bolts are used to connect the fixing plate and the base to reinforce the power device.

[0024] As a further improvement of one embodiment of the present invention, the first bracket is a T-shaped bracket, including a vertical portion and a transverse portion, the two ends of the vertical portion are respectively connected to the second bracket and the third bracket, and the transverse portion is connected to the third bracket; the bracket assembly further includes a plurality of fourth brackets, the two ends of the fourth brackets are respectively connected to the vertical portion and the transverse portion to form a triangular structure; and / or the two ends of the fourth brackets are respectively connected to the vertical portion and the second bracket to form a triangular structure;

[0025] And / or, the power device is configured as a jack.

[0026] The present invention also provides a fixing method for a superconducting magnet device, comprising:

[0027] Providing a fixing mechanism for a superconducting magnet device as described above;

[0028] One of the flange structures on the outer cylinder wall of the dewar is fixedly connected to the first mounting member on the fixing mechanism, so that the central axis of the dewar is perpendicular to the first bracket and the second bracket of the fixing mechanism, and the superconducting magnet device remains in a vertical state and is located above the ground at a certain distance from the ground.

[0029] As a further improvement of one embodiment of the present invention, the present invention further includes:

[0030] The jacking device of the jacking assembly is controlled to drive the support part to move in the vertical direction toward the dewar until the support surface of the support part completely abuts against the partial surface of the outer cylinder wall of the dewar, and the jacking device is controlled to apply an upward supporting force to the superconducting magnet device.

[0031] As a further improvement of one embodiment of the present invention, the present invention further includes:

[0032] The magnitude of the supporting force applied by the lifting device to the superconducting magnet device is adjusted according to the weight of the superconducting magnet device, so that the lifting assembly bears half of the weight of the superconducting magnet device.

[0033] The present invention also provides an assembly method, comprising:

[0034] Fixing the superconducting magnet device to the fixing mechanism using the fixing method described above;

[0035] The iron yoke and the superconducting magnet device are pushed together and assembled using a tooling cart; wherein the superconducting magnet device is kept in a vertical state during the assembly process.

[0036] As a further improvement of one embodiment of the present invention, it includes:

[0037] Controlling the lifting device to reduce the supporting force applied to the superconducting magnet device so that the supporting portion is separated from the outer cylinder wall of the Dewar;

[0038] Disassembling and separating the first mounting member from the flange structure;

[0039] The assembly of the superconducting magnet device and the iron yoke is transported to the next workstation; wherein, during the transportation process, the assembly is kept in a vertical state and is located above the ground but at a certain distance from the ground.

[0040] Compared with the prior art, the beneficial effects of the present invention include at least the following: the present invention provides a fixing mechanism for a superconducting magnet device, the superconducting magnet device can be connected to the first mounting member of the fixing mechanism at least through the flange structure on the outer cylinder wall of the dewar so as to be fixedly connected to the fixed structural member, and can ensure that the central axis of the dewar is perpendicular to the first bracket, the superconducting magnet device always maintains a vertical state for assembly with the iron yoke, and during the assembly process of the superconducting magnet device and the iron yoke, there is no need to flip the superconducting magnet device 90 degrees to make it horizontal, thereby avoiding the risks brought by flipping the superconducting magnet device, improving assembly efficiency, and better ensuring product quality before and after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 1 is a schematic structural diagram of a fixing mechanism for fixing a superconducting magnet device in one embodiment of the present invention;

[0042] Figure 2 is a schematic structural diagram of a superconducting magnet device in one embodiment of the present invention;

[0043] Figure 3 is a schematic structural diagram of a bracket assembly in one embodiment of the present invention;

[0044] Figure 4 is a schematic structural diagram of a jacking assembly in one embodiment of the present invention;

[0045] Figure 5 Schematic diagram of the exploded structure between the support portion, the connecting portion and the guide shaft in one embodiment of the present invention;

[0046] Figure 6 is an exploded view of the space between the fixing plate and the lifting device in one embodiment of the present invention;

[0047] Figure 7 1 is a flow chart of a method for fixing a superconducting magnet device using a fixing mechanism in one embodiment of the present invention;

[0048] Figure 8 It is a schematic flow chart of an assembling method of a superconducting magnet device and an iron yoke in one embodiment of the present invention.

[0049] In the figure: 100, fixing mechanism; 110, bracket assembly; 111, first bracket; 1111, vertical portion; 1112, horizontal portion; 112, second bracket; 113, third bracket; 114, fourth bracket; 115, first mounting member; 116, second mounting member; 120, lifting assembly; 121, base; 122, lifting device; 1221, power device; 1222, lifting member; 123, supporting portion; 1231, supporting surface; 1232, second groove; 124, connecting portion; 1241, first A connecting portion; 12411, a first groove; 1242, a second connecting portion; 1243, a third connecting portion; 125, a pressure sensing device; 126, a guide shaft; 127, a fixing portion; 1271, a fixing plate; 1272, a bolt; 1273, a through hole; 12731, a first through hole; 12732, a second through hole; 128, a guide sleeve; 200, a superconducting magnet device; 210, a dewar; 211, an outer cylinder wall; 212, an inner cylinder wall; 213, a flange structure; AA', a horizontal direction; BB', a vertical direction. DETAILED DESCRIPTION

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings. However, 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 so that this disclosure will be thorough and complete, and will fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the drawings represent identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0051] The words expressing positions and directions described in the present invention are all explained with reference to the accompanying drawings as examples, but can be modified as needed, and all such modifications are within the scope of protection of the present invention.

[0052] Please refer to Figures 1 to 6 The present invention provides a fixing mechanism 100 for a superconducting magnet device 200. The superconducting magnet device 200 is fixed on the fixing mechanism 100, so that the superconducting magnet device 200 always remains in a vertical state and is located above the ground at a certain distance from the ground during the assembly process with the iron yoke. During the assembly process of the superconducting magnet device and the iron yoke, there is no need to flip the superconducting magnet device 90 degrees to make it horizontal, thereby avoiding the assembly risks brought about by the need to flip the superconducting magnet device in the existing assembly process, and ensuring the performance and reliability of the superconducting magnet device and the iron yoke before and after assembly.

[0053] See also Figure 2The superconducting magnet device 200 includes a dewar 210, which is an annular cylindrical structure including an outer wall 211 and an inner wall 212. Several flange structures 213 are provided on the outer wall 211 of the dewar 210. The flange structures 213 primarily serve the functions of connection, sealing, support, and functional interface expansion. A refrigeration system, vacuum system, high-frequency system, and extraction system can be installed on the outer wall 211 of the dewar 210 through the flange structures 213. For example, the vacuum exhaust pipe is fixed to the outer wall 211 of the dewar 210 through the flange structures 213, facilitating connection to a vacuum pump; the cold head of the refrigerator is connected to the interior of the dewar 210 through the flange structures 213 to provide cooling for the cryogenic system.

[0054] This application defines a horizontal plane containing the central axis of the annular cylinder, a direction perpendicular to the central axis on the horizontal plane is defined as the horizontal direction AA', and a direction perpendicular to the horizontal plane is defined as the vertical direction BB'.

[0055] See also Figure 1 and Figure 3 The fixing mechanism 100 includes a bracket assembly 110 and a first mounting member 115 fixed to the bracket assembly 110. The bracket assembly 110 includes at least two first brackets 111 arranged opposite each other in the horizontal direction AA' and a second bracket 112 connecting the top ends of the two first brackets 111. The first mounting member 115 is mounted on the second bracket 112. The second bracket 112 is arranged perpendicular to the first bracket 111, that is, the first bracket 111 is along the vertical direction BB', and the second bracket 112 is along the horizontal direction AA'.

[0056] The first mounting member 115 is configured as a fixed structure that cooperates with the flange structure 213. The superconducting magnet apparatus 200 is detachably connected to the first mounting member 115 via the flange structure 213. The first mounting member 115 can be configured as a flange having the same size as the flange structure 213 on the outer cylinder wall 211 of the dewar 210. The first mounting member 115 and the flange structure 213 are fixed together by a plurality of bolts.

[0057] Specifically, the first mounting member 115 is arranged at the midpoint of the second bracket 112. After the superconducting magnet device 200 is fixed to the first mounting member 115 through the flange structure 213, the central axis of the dewar 210 is perpendicular to the first bracket 111 and the second bracket 112. At this time, the superconducting magnet device 200 remains in a vertical state and is located above the ground but at a certain distance from the ground.

[0058] Combine Figure 1 and Figure 4The fixing mechanism 100 further includes a lifting assembly 120. The support assembly 110 further includes a third support 113 connecting the bottom ends of the two first supports 111 and a second mounting member 116 secured to the third support 113. The third support 113 is perpendicular to the first supports 111 and is positioned opposite the second support 112 in the vertical direction BB'. One end of the lifting assembly 120 is detachably connected to the second mounting member 116, and the other end is connected to the outer wall 211 of the dewar 210, thereby supporting the superconducting magnet assembly 200.

[0059] Specifically, the second mounting member 116 is located at the midpoint of the third bracket 113. The second mounting member 116 and the first mounting member 115 are arranged opposite each other in the vertical direction BB'. The lifting assembly 120 extends along the vertical direction BB'. The first mounting member 115 is connected to the flange structure 213, and the lifting assembly 120 is used to support the surface of the outer cylinder wall 211 of the dewar 210 opposite the flange structure 213. This can better secure the superconducting magnet apparatus 200. The lifting assembly 120 can also share some of the weight of the superconducting magnet apparatus 200, reducing stress concentration at the flange structure 213 connected to the first mounting member 115.

[0060] See Figure 4 The jacking assembly 120 includes at least a base 121, a jacking device 122 fixed on the base 121, and a support portion 123 that is matched with the outer cylinder wall 211 of the dewar 210. The jacking assembly 120 is detachably connected to the second mounting member 116 through the base 121. The jacking device 122 is used to control the movement of the support portion 123 along the vertical direction BB' and apply a supporting force along the vertical direction BB' to the support portion 123, so that the support portion 123 abuts against the outer cylinder wall 211 of the dewar 210 and supports the superconducting magnet device 200.

[0061] The base 121 can be configured to have the same structure and size as the second mounting member 116 , and the two can be connected and fixed by a plurality of bolts.

[0062] The lifting device 122 includes a power device 1221 and a lifting component 1222 arranged above the power device 1221. The power device 1221 is fixed to the base 121. The power device 1221 is used to provide driving force and supporting force. The lifting component 1222 is used to drive the support part 123 to move along the vertical direction BB' toward the outer cylinder wall 211 close to the dewar 210 according to the driving force provided by the power device 1221, and apply supporting force to the dewar 210 when the support part 123 abuts against the outer cylinder wall 211 of the dewar 210. That is to say, after the superconducting magnet device 200 is connected and fixed to the first mounting member 115 through the flange structure 213, the power device 1221 can be controlled to provide a driving force along the vertical direction BB' and toward the direction close to the dewar 210, so that the lifting component 1222 moves toward the direction close to the dewar 210 under the action of the driving force, and drives the support part 123 to move toward the direction close to the dewar 210; when the support part 123 abuts the outer cylinder wall 211 of the dewar 210, the power device 1221 is controlled to stop driving and provide an upward supporting force to support the superconducting magnet device 200, thereby alleviating the stress concentration around the flange structure 213 connected to the first mounting member 115.

[0063] Specifically, the power device 1221 is a jack, which can be a hydraulic jack or a screw jack.

[0064] The support portion 123 includes a support surface 1231 facing the dewar 210. The support surface 1231 is configured as an arcuate surface that mates with the outer wall 211 of the dewar 210. In other words, the curvature of the support surface 1231 or its radius of curvature is related to the curvature of the convex portion of the outer wall 211 of the dewar 210 or its radius of curvature. The present invention does not impose any restrictions on the specific dimensions of the support surface 1231. As long as it does not interfere with other components (such as the flange structure) or the iron yoke on the outer wall 211 of the dewar 210, it can be fully mated and connected to a portion of the outer wall 211 of the dewar 210.

[0065] Specifically, the support portion 123 is configured to be a non-metallic material. When the support portion 123 is driven by the lifting device 122 and moves toward the outer cylinder wall 211 of the dewar 210, since the support portion 123 is made of a non-metallic material and has a certain elastic modulus, it can play a buffering role. When the support portion 123 supports a portion of the outer cylinder wall 211, it can also reduce wear on the surface of the outer cylinder wall 211 of the dewar 210.

[0066] Furthermore, the lifting assembly 120 also includes a connecting portion 124 connecting the lifting device 122 and the support portion 123. The connecting portion 124 includes a first connecting portion 1241 and a second connecting portion 1242 that are fixedly connected. The second connecting portion 1242 is disposed below the first connecting portion 1241. The first connecting portion 1241 is detachably connected to the support portion 123, and the second connecting portion 1242 is connected to the lifting device 122. The lifting device 122 is used to control the movement of the connecting portion 124 along the vertical direction BB' and apply a supporting force in the vertical direction BB' to the connecting portion 124, so that the support portion 123 abuts against the outer cylinder wall 211 of the dewar 210 through the connecting portion 124 and supports the superconducting magnet device 200.

[0067] The first connecting portion 1241 is specifically a cylindrical structure, the upper surface of which is matingly connected to the lower surface of the support portion 123. The two are detachably connected via multiple bolts. Of course, the jacking assembly 120 in this embodiment can also support and fix superconducting magnet devices 200 of different sizes by simply replacing the support portion 123 that matches the dewar 210 of different diameters.

[0068] The second connection portion 1242 is specifically configured as a cylindrical structure, and the circumferential diameter of the second connection portion 1242 is smaller than the circumferential diameter of the first connection portion 1241 .

[0069] Furthermore, the lifting assembly 120 also includes a pressure sensing device 125, which is disposed between the lifting device 122 and the second connecting portion 1242 and is used to obtain the magnitude of the supporting force applied by the lifting device 122 to the connecting portion 124. When the power device 1221 is controlled to provide a driving force along the vertical direction BB' and toward the dewar 210, the lifting component 1222 moves toward the dewar 210 under the action of the driving force, and drives the supporting portion 123 toward the dewar 210 through the connecting portion 124. When the supporting portion 123 abuts the outer cylinder wall 211 of the dewar 210, the power device 1221 is controlled to stop driving and provide an upward supporting force. At this time, the magnitude of the supporting force applied by the lifting device 122 to the superconducting magnet device 200 can be obtained through the pressure sensing device 125.

[0070] Generally, the supporting force applied by the lifting device 122 to the superconducting magnet device 200 can be adjusted by using the data obtained by the pressure sensor device 125 , so that the lifting assembly 120 can bear half of the weight of the superconducting magnet device 200 .

[0071] Furthermore, the connecting portion 124 further includes a third connecting portion 1243, which is fixed to the lower end surface of the second connecting portion 1242. The pressure sensing device 125 is detachably connected to the third connecting portion 1243. The third connecting portion 1243 can also be configured as a cylindrical structure, and the third connecting portion 1243 and the pressure sensing device 125 can be connected and fixed by bolts.

[0072] Since the superconducting magnet device 200 can weigh several tons or tens of tons, and the contact area between the supporting surface 1231 of the supporting part 123 and the outer cylinder wall 211 of the dewar 210 accounts for a relatively small proportion of the circumferential area of the outer cylinder wall 211 of the entire dewar 210, in order to prevent the supporting part 123 from shaking or tilting in the process of supporting the superconducting magnet device 200, the jacking assembly 120 in this embodiment also includes at least two guide shafts 126, all of which are evenly arranged around the circumferential side of the second connecting part 1242 and extend along the vertical direction BB'. One end of the guide shaft 126 is fixedly connected to the base 121, and the other end extends from the lower surface of the first connecting part 1241 to the interior of the first connecting part 1241 and is slidably connected to the first connecting part 1241.

[0073] Illustratively, the lifting assembly 120 includes two guide shafts 126, which are evenly distributed on the circumference of the second connecting portion 1242. The two guide shafts 126 are symmetrically arranged relative to the second connecting portion 1242, and the axes of the two guide shafts 126 are respectively parallel to the axis of the second connecting portion 1242. When the lifting component 1222 is driven to move in the vertical direction BB' by controlling the power device 1221 to drive the connecting portion 124 to drive the support portion 123 toward the dewar 210, the mutual checks and balances between the two guide shafts 126 ensure that the connecting portion 124 and the support portion 123 move completely along the extension direction of the guide shafts 126 (i.e., the vertical direction BB'), thereby preventing tilting or shaking during movement.

[0074] For details, see Figure 5A first groove 12411 is provided on the lower surface of the first connecting portion 1241 at a position corresponding to the guide shaft 126. The size of the first groove 12411 is larger than that of the guide shaft 126. A guide sleeve 128 is provided within the first groove 12411. The guide sleeve 128 is provided with a guide groove that cooperates with the guide shaft 126. The diameter of the guide groove is the same as or slightly larger than the diameter of the guide shaft 126. The guide groove extends parallel to the axis of the second connecting portion 1242. The wall forming the guide groove is used to guide the guide shaft 126. One end of the guide shaft 126 is fixedly connected to the base 121, and the other end of the guide shaft 126 extends into the first groove 12411 and passes through the guide sleeve 128. Specifically, the guide shaft 126 and the first groove 12411 are both cylindrical structures, and the circumferential diameter of the first groove 12411 is larger than the circumferential diameter of the guide shaft 126.

[0075] More specifically, the first groove 12411 extends to the upper surface of the first connecting portion 1241 and penetrates the first connecting portion 1241. The lower surface of the support portion 123 is provided with a second groove 1232 at a position corresponding to the first groove 12411. The second groove 1232 has the same shape and size as the first groove 12411. The guide shaft 126 also extends into the second groove 1232. When the connecting portion 124 and the support portion 123 are driven toward the Dewar, the first connecting portion 1241 can slide relative to the guide shaft 126 in the vertical direction BB' via the guide sleeve located in the first groove 12411.

[0076] At the same time, combined Figure 4 and Figure 6 To prevent jacking device 122 from shaking during operation and to improve the stability of the driving force it provides along the vertical direction BB', jacking assembly 120 in this embodiment also includes a fixing portion 127 that is detachably connected to base 121. Fixing portion 127 includes a fixing plate 1271 and multiple bolts 1272. A through hole 1273 is defined in the center of fixing plate 1271. Fixing plate 1271 is sleeved and connected to the upper surface of power device 1221 through through hole 1273. Multiple bolts 1272 are used to connect fixing plate 1271 and base 121 to reinforce power device 1221.

[0077] For details, please refer to Figure 6The through hole 1273 includes a first through hole 12731 and a second through hole 12732. The first through hole 12731 is located above the second through hole 12732. That is, the first through hole 12731 is close to the support portion 123, and the second through hole 12732 is close to the base 121. The diameter of the second through hole 12732 is larger than the diameter of the first through hole 12731. Specifically, the diameter of the second through hole 12732 is equal to or slightly larger than the diameter of the power device 1221, and the diameter of the first through hole 12731 is larger than the diameter of the lifting component 1222. The first through hole 12731 and the second through hole 12732 are connected to each other to form a stepped structure. When the fixing plate 1271 is sleeved and fixed on the lifting device 122, the step structure formed between the first through hole 12731 and the second through hole 12732 is just clamped on the circumferential side of the upper surface of the power device 1221, and the second through hole 12732 completely surrounds the circumferential area of the power device 1221 close to its upper surface, and the power device 1221 and the base 121 are completely fixed by the bolt 1272; and because the diameter of the first through hole 12731 is larger than the diameter of the lifting component 1222, when the power device 1221 drives the lifting component 1222 to move, the fixing plate 1271 will not interfere with the lifting component 1222.

[0078] Furthermore, when the diameter of the power unit 1221 is relatively large and the distance between the power unit 1221 and the guide shaft 126 is relatively small, that is, when the distance between the two guide shafts 126 is smaller than the diameter of the fixing plate 1271, to prevent the fixing plate 1271 from interfering with the guide shaft 126, a corresponding avoidance portion may be provided in a portion of the fixing plate 1271 corresponding to the guide shaft 126. Of course, the avoidance portion may be specifically provided based on the distance between the power unit 1221 and the guide shaft 126, the size of the fixing plate 1271, and the specific positional relationship between the circumferential side of the fixing plate 1271 and the guide shaft 126. When the diameter of the power unit 1221 is relatively small and the distance between the power unit 1221 and the guide shaft 126 is relatively large, that is, when the distance between the two guide shafts 126 is larger than the diameter of the fixing plate 1271, the avoidance portion may not be provided on the fixing plate 1271. The present invention does not limit the specific structure and size of the avoidance portion. As long as the fixing plate 1271 does not affect the fixing effect of the power device 1221, interference between the fixing plate 1271 and the guide shaft 126 can be avoided.

[0079] See again Figure 1 and Figure 3The first bracket 111 is a T-shaped bracket, comprising a vertical portion 1111 and a transverse portion 1112. The ends of the vertical portion 1111 are respectively connected to the second bracket 112 and the third bracket 113. The transverse portion 1112 is located at one end of the vertical portion 1111 near the third bracket 113 and is connected to the third bracket 113. The bracket assembly 110 also includes a plurality of fourth brackets 114. The ends of some fourth brackets 114 are respectively connected to the vertical portion 1111 and the transverse portion 1112 to form a triangular structure to strengthen the stability of the bottom of the bracket assembly 110. The ends of another portion of the fourth brackets 114 are respectively connected to the vertical portion 1111 and the second bracket 112 to form a triangular structure to further strengthen the stability of the top of the bracket assembly 110.

[0080] like Figure 7 As shown, the present invention also provides a fixing method for a superconducting magnet device, comprising:

[0081] S1: Provide the fixing mechanism 100 for the superconducting magnet apparatus as described above.

[0082] S2: One of the flange structures 213 on the outer cylinder wall 211 of the dewar 210 is fixedly connected to the first mounting member 115 on the fixing mechanism 100, so that the central axis of the dewar 210 is perpendicular to the first bracket 111 and the second bracket 112 of the fixing mechanism 100, and the superconducting magnet device 200 remains in a vertical state and is located above the ground at a certain distance from the ground.

[0083] Step S2 specifically includes: moving the superconducting magnet device 200 to the position of the fixing mechanism 100 by the transfer device, and using multiple bolts to fix one of the flange structures 213 on the outer surface of the superconducting magnet device 200 to the first mounting member 115 on the first bracket 111, so that the central axis of the dewar 210 is perpendicular to the first bracket 111 and the second bracket 112 of the fixing mechanism 100, and the superconducting magnet device 200 remains in a vertical state and is located above the ground at a certain distance from the ground.

[0084] Furthermore, the fixing method in this embodiment also includes:

[0085] S3: Control the lifting device 122 of the lifting group 120 to drive the support part 123 to move along the vertical direction BB' toward the direction close to the dewar 210 until the supporting surface 1231 of the support part 123 completely abuts against the partial surface of the outer cylinder wall 211 of the dewar 210, and control the lifting device 122 to apply an upward supporting force to the superconducting magnet device 200.

[0086] S4: According to the weight of the superconducting magnet device 200 , the supporting force is adjusted so that the lifting assembly 120 bears half of the weight of the superconducting magnet device 200 .

[0087] Step S4 specifically includes: adjusting the supporting force applied by the lifting device 122 to the supporting portion 123 according to the weight of the superconducting magnet device 200 itself and the data obtained by the pressure sensor device 125, so that the lifting assembly 120 shares approximately half of the weight of the superconducting magnet device 200, and the superconducting magnet device 200 is fixed to the fixing mechanism 100.

[0088] like Figure 8 As shown, the present invention also provides an assembly method, comprising:

[0089] A1: Superconducting magnet apparatus 200 is fixed to fixing mechanism 100 using the above-described fixing method.

[0090] A2: Use a tooling cart to push the iron yoke and the superconducting magnet device 200 together for assembly; wherein, the superconducting magnet device 200 remains in a vertical state and is located above the ground at a certain distance during the assembly process.

[0091] Step A1 may be implemented by only implementing steps S1 and S2 in the above-mentioned fixing method, and fixing the superconducting magnet device 200 to the first mounting member 115 only through the flange structure 213, so as to achieve the purpose of fixing the superconducting magnet device 200 to the fixing mechanism 100; step A1 may also be implemented by implementing steps S1 and S3 or steps S1 and S4 in the above-mentioned fixing method, and on the basis of fixing the flange structure 213 and the first mounting member 115, using the jacking assembly 120 to apply an upward supporting force to the superconducting magnet device 200 to bear part of the weight of the superconducting magnet device 200, thereby reducing the stress near the flange structure 213 where the superconducting magnet device 200 is connected to the first mounting member 115.

[0092] Furthermore, the assembly method in this embodiment also includes:

[0093] A3: Control the lifting device 122 to reduce the supporting force applied to the superconducting magnet device 200 and gradually move the supporting portion 123 in the vertical direction BB′ away from the dewar 210 to separate the supporting portion 123 from the outer cylinder wall 211 of the dewar 210 .

[0094] A4: Disassemble and separate the first mounting member 115 from the flange structure 213. Specifically, the bolts fixing the first mounting member 115 and the flange structure 213 can be loosened to separate the two.

[0095] A5: Use a crane to transport the assembly of the superconducting magnet device 200 and the iron yoke to the next workstation; wherein, the assembled assembly of the superconducting magnet device 200 and the iron yoke remains in a vertical state during the transportation process.

[0096] In summary, the present invention provides a fixing mechanism, fixing method and assembly method for a superconducting magnet device. The superconducting magnet device can be connected to the first mounting member of the fixing mechanism at least through the flange structure on the outer cylinder wall of the dewar so as to be fixedly connected to the fixed structural member, and can ensure that the central axis of the dewar is perpendicular to the first bracket. The superconducting magnet device always maintains a vertical state for assembly with the iron yoke. During the assembly process of the superconducting magnet device and the iron yoke, there is no need to flip the superconducting magnet device 90 degrees to make it horizontal, which improves the assembly efficiency and avoids the assembly risks brought about by the need to flip the superconducting magnet device in the existing assembly process, thereby ensuring the quality of the superconducting magnet device and the iron yoke before and after assembly. At the same time, the superconducting magnet device is supported by a lifting assembly, which can bear about half of the weight of the superconducting magnet device and reduce the stress concentration in the flange structure area on the outer cylinder wall of the dewar that is fixedly connected to the first mounting member.

[0097] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes shall fall within the scope of protection of the claims of the present invention.

Claims

1. A fixing mechanism for a superconducting magnet device, wherein the superconducting magnet device comprises a dewar, wherein the outer cylinder wall of the dewar is provided with a plurality of flange structures, characterized in that: The fixing mechanism includes: a bracket assembly and a first mounting member fixed to the bracket assembly, the bracket assembly includes at least two first brackets arranged opposite to each other in the horizontal direction and a second bracket connecting the top ends of the two first brackets, and the first mounting member is arranged on the second bracket; the first mounting member is configured as a fixed structure that cooperates with the flange structure, so that the superconducting magnet device can be detachably connected to the first mounting member through the flange structure, the central axis of the Dewar is perpendicular to the first bracket and the second bracket, and the superconducting magnet device remains in a vertical state.

2. The fixing mechanism for a superconducting magnet device according to claim 1, characterized in that: The fixing mechanism further includes a lifting assembly, and the bracket assembly further includes a third bracket connecting the bottom ends of the two first brackets and a second mounting member fixed to the third bracket; One end of the jacking assembly is detachably connected to the second mounting member, and the other end of the jacking assembly is connected to the outer cylinder wall of the Dewar for supporting the superconducting magnet device.

3. The fixing mechanism for a superconducting magnet device according to claim 2, characterized in that: The jacking assembly at least includes a base, a jacking device fixed on the base, and a support portion connected to the outer cylinder wall of the Dewar. The jacking assembly is detachably connected to the second mounting member through the base. The jacking device is used to control the movement of the support portion in the vertical direction and apply a supporting force in the vertical direction to the support portion, so that the support portion abuts against the outer cylinder wall of the Dewar and supports the superconducting magnet device.

4. The fixing mechanism for a superconducting magnet device according to claim 3, characterized in that: The support portion includes a support surface facing the dewar, and the support surface is configured as an arc surface that matches the outer cylinder wall of the dewar; And / or, the support portion is made of non-metallic material.

5. The fixing mechanism for a superconducting magnet device according to claim 3, characterized in that: The jacking assembly further includes a connecting portion connecting the jacking device and the support portion, the connecting portion including a first connecting portion and a second connecting portion fixedly connected, the second connecting portion being arranged below the first connecting portion, the first connecting portion being detachably connected to the support portion, and the second connecting portion being connected to the jacking device; The lifting device is used to control the connection part to move in the vertical direction and apply a supporting force in the vertical direction to the connection part, so that the supporting part abuts against the outer cylinder wall of the Dewar and supports the superconducting magnet device through the connection part.

6. The fixing mechanism for a superconducting magnet device according to claim 5, characterized in that: The jacking assembly further includes a pressure sensing device, which is disposed between the jacking device and the second connecting portion and is used to obtain the magnitude of the supporting force applied by the jacking device to the connecting portion.

7. The fixing mechanism for a superconducting magnet device according to claim 6, characterized in that: The connecting portion further includes a third connecting portion, which is fixed to the lower end surface of the second connecting portion, and the pressure sensing device is detachably connected to the third connecting portion.

8. The fixing mechanism for a superconducting magnet device according to claim 5, characterized in that: The lifting assembly further includes at least two guide shafts, all of which are evenly arranged around the circumference of the second connecting portion; a first groove is provided on the lower surface of the first connecting portion at a position corresponding to the guide shaft, and the size of the first groove is larger than the size of the guide shaft; One end of the guide shaft is fixedly connected to the base, and the other end of the guide shaft extends into the first groove.

9. The fixing mechanism for a superconducting magnet device according to claim 8, characterized in that: A guide sleeve is provided in the first groove, the guide sleeve is provided with a guide groove matched with the guide shaft, and the other end of the guide shaft passes through the guide groove and extends into the first groove; And / or, the first groove extends to the upper surface of the first connecting portion and passes through the first connecting portion, and a second groove is provided on the lower surface of the supporting portion at a position corresponding to the first groove, and the second groove has the same size as the first groove; The guide shaft also extends into the second groove.

10. The fixing mechanism for a superconducting magnet device according to claim 3, characterized in that: The lifting device includes a power device and a lifting component arranged above the power device, the power device is fixed to the base, the power device is used to provide driving force and supporting force, the lifting component is used to drive the support part to move in the vertical direction toward the outer cylinder wall of the dewar according to the driving force provided by the power device, and apply supporting force to the dewar when the support part abuts against the outer cylinder wall of the dewar; The jacking assembly also includes a fixing part that is detachably connected to the base, and the fixing part includes a fixing plate and multiple bolts. A through hole is set in the middle area of the fixing plate, and the fixing plate is connected to the upper surface of the power device through the through hole. The multiple bolts are used to connect the fixing plate and the base to reinforce the power device.

11. The fixing mechanism for a superconducting magnet device according to claim 10, characterized in that: The first bracket is a T-shaped bracket, including a vertical portion and a transverse portion, the two ends of the vertical portion are respectively connected to the second bracket and the third bracket, and the transverse portion is connected to the third bracket; the bracket assembly further includes a plurality of fourth brackets, the two ends of the fourth brackets are respectively connected to the vertical portion and the transverse portion to form a triangular structure; and / or the two ends of the fourth brackets are respectively connected to the vertical portion and the second bracket to form a triangular structure; And / or, the power device is configured as a jack.

12. A fixing method for a superconducting magnet device, characterized in that: include: Providing a fixing mechanism for a superconducting magnet device according to any one of claims 1 to 11; One of the flange structures on the outer cylinder wall of the dewar is fixedly connected to the first mounting member on the fixing mechanism, so that the central axis of the dewar is perpendicular to the first bracket and the second bracket of the fixing mechanism, and the superconducting magnet device remains in a vertical state.

13. The fixing method according to claim 12, characterized in that: Also includes: The jacking device of the jacking assembly is controlled to drive the support part to move in the vertical direction toward the dewar until the support surface of the support part completely abuts against the partial surface of the outer cylinder wall of the dewar, and the jacking device is controlled to apply an upward supporting force to the superconducting magnet device.

14. The fixing method according to claim 13, characterized in that: Also includes: The magnitude of the supporting force applied by the lifting device to the superconducting magnet device is adjusted according to the weight of the superconducting magnet device, so that the lifting assembly bears half of the weight of the superconducting magnet device.

15. An assembly method, characterized in that: include: Fixing the superconducting magnet device to the fixing mechanism using the fixing method according to any one of claims 12 to 14; The iron yoke and the superconducting magnet device are pushed together and assembled using a tool cart; wherein, during the assembly process, the superconducting magnet device is kept in a vertical state and is located above the ground but at a certain distance from the ground.

16. The assembly method according to claim 15, characterized in that: include: Controlling the lifting device to reduce the supporting force applied to the superconducting magnet device so that the supporting portion is separated from the outer cylinder wall of the Dewar; Disassembling and separating the first mounting member from the flange structure; The assembly of the superconducting magnet device and the iron yoke is transported to the next workstation; wherein, during the transportation process, the assembly is kept in a vertical state and is located above the ground but at a certain distance from the ground.

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