Large-deflection-angle silicon steel sheet type two-magnet structure

Abstract

The utility model relates to the field of particle accelerators, in particular to a large-deflection-angle silicon steel sheet type two-magnet structure which comprises a first magnet, a second magnet and a first connecting piece, and the first connecting piece comprises a first outer arc plate, a second outer arc plate, a first pull lug, a second pull lug and a first connecting piece body. Components which are cut into blocks are assembled, welded and machined in a modularized mode, the design not only simplifies the production process and improves the production efficiency, but also facilitates follow-up maintenance and replacement, and meanwhile the reliability and durability of the magnet are enhanced through the modularized design. The first inner arc plate, the second inner arc plate, the corresponding first outer arc plate and the corresponding second outer arc plate are respectively arranged inside and outside the magnet and are fixedly connected through the pull lugs and the connecting pieces, so that the inner and outer supporting structure not only enhances the mechanical strength of the magnet, but also ensures the stability of the magnet under the action of a high-speed ion beam current; and the performance reduction caused by vibration or impact is reduced.

Description

Technical Field

[0001] The utility model relates to the field of particle accelerators, in particular to a two-magnet structure of silicon steel sheets with a large deflection angle. Background Art

[0002] In the field of particle accelerators, various types of magnets are required to accelerate, deflect, and focus ion beams. Most traditional magnets are made of DT4 pure iron. Although DT4 pure iron can be processed into various shapes, its anti-eddy current ability is not as strong as that of magnets with a silicon steel sheet structure.

[0003] For such dipole magnets stacked with silicon steel sheets, hundreds or thousands of 0.5-mm silicon steel sheets are stacked and formed at one time, which can well ensure the size, stacking coefficient, and geometric tolerance of the magnets.

[0004] However, for magnets with a silicon steel sheet structure, for large-angle dipole magnets, the stacking coefficient of the magnets cannot be guaranteed to be ≥97% by the one-time stacking process, resulting in a large cumulative error of the split blocks. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a two-magnet structure of silicon steel sheets with a large deflection angle, which solves the problem that the stacking coefficient of the magnet cannot be guaranteed to be ≥97% by the one-time stacking process in the prior art, resulting in a large cumulative error of the split blocks.

[0006] To achieve the above purpose, the utility model provides a two-magnet structure of silicon steel sheets with a large deflection angle, including a first magnet, a second magnet, and a first connection assembly. The first magnet is arranged on one side of the second magnet; the first connection assembly includes a first outer arc plate, a second outer arc plate, a first ear, a second ear, and a first connecting member. The first outer arc plate is fixedly connected to the first magnet and is located on one side of the first magnet. The second outer arc plate is fixedly connected to the second magnet and is located on one side of the second magnet. The first ear is fixedly connected to the first outer arc plate and is located on the side of the first outer arc plate away from the first magnet. The second ear is fixedly connected to the second outer arc plate and is located on the side of the second outer arc plate away from the second magnet. Two ends of the first connecting member are respectively connected to the first ear and the second ear, and the first connecting member is located between the first ear and the second ear.

[0007] Wherein, the connecting member includes a threaded rod, a first nut, and a second nut. The threaded rod penetrates through the first ear and the second ear; the first nut is threadedly connected to the threaded rod, abuts against the first ear, and is sleeved on the threaded rod; the second nut is threadedly connected to the threaded rod, abuts against the second ear, and is sleeved on the threaded rod.

[0008] Wherein, the first connection component further includes a first end plate, a second end plate and a second connecting member. The first end plate is fixedly connected to the first magnet and is located on one side of the first magnet; the second end plate is fixedly connected to the second magnet and is located on one side of the second magnet; the second connecting member is respectively connected to the first end plate and the second end plate.

[0009] Wherein, the first connection component further includes a top plate and a bottom plate. The top plate is fixedly connected to the first magnet, fixedly connected to the first end plate, and is located on top of the first magnet; the bottom plate is fixedly connected to the second magnet, fixedly connected to the second end plate, and is located at the bottom of the second magnet.

[0010] Wherein, the second connecting member includes a first pulling block, a second pulling block, a pull rod and a third nut. The first pulling block is fixedly connected to the first end plate and is located on one side of the first end plate; the second pulling block is fixedly connected to the second end plate and is located on one side of the second end plate; the pull rod abuts against the first pulling block and penetrates through the first pulling block and the second pulling block; the third nut is threadedly connected to the pull rod and abuts against the second pulling block.

[0011] For a two-magnet structure of silicon steel sheets with a large deflection angle in the present utility model, when connecting the produced first magnet and the second magnet, the first outer arc plate and the second outer arc plate are respectively installed on the outer sides of the first magnet and the second magnet, then the first magnet and the second magnet are aligned and fitted together, and finally a plurality of the first lugs and the second lugs are connected through the first connecting member, thereby connecting the first magnet and the second magnet. At the same time, a first inner arc plate and a second inner arc plate are further provided inside the first magnet and the second magnet, and the first inner arc plate and the second inner arc plate are also provided with lugs and connecting members, and their structures and principles are the same as those of the first outer arc plate, the second outer arc plate and the first connecting member, and will not be elaborated here. By designing an assembly structure, the cut parts are assembled, welded and processed in a modular manner. This design not only simplifies the production process, improves the production efficiency, but also facilitates subsequent maintenance and replacement. At the same time, the modular design also enhances the reliability and durability of the magnet; a first inner arc plate, a second inner arc plate, and corresponding first outer arc plate and second outer arc plate are respectively provided inside and outside the magnet, and are fixedly connected through lugs and connecting members. This internal and external support structure not only enhances the mechanical strength of the magnet, but also ensures the stability of the magnet under the action of a high-speed ion beam, reducing the performance degradation caused by vibration or impact. Description of the Drawings

[0012] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0013] Figure 1 It is a schematic diagram of the overall structure of the two-magnet structure of silicon steel sheets with a large deflection angle in the first embodiment of the present utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the first connection component in the first embodiment of the present utility model.

[0015] Figure 3 It is the Figure 2 enlarged view of part A.

[0016] Figure 4 It is a schematic diagram of the installation structure of the first end plate in the second embodiment of the present utility model.

[0017] Figure 5 It is the Figure 4 enlarged view of part B.

[0018] Figure 6 It is a schematic diagram of the installation structure of the bottom plate in the second embodiment of the present utility model.

[0019] In the figure: 101 - first magnet, 102 - second magnet, 103 - first connection component, 104 - first outer arc plate, 105 - second outer arc plate, 106 - first pulling ear, 107 - second pulling ear, 108 - first connecting piece, 109 - threaded rod, 110 - first nut, 111 - second nut, 112 - first inner arc plate, 113 - second inner arc plate, 201 - first end plate, 202 - second end plate, 203 - second connecting piece, 204 - top plate, 205 - bottom plate, 206 - first pulling block, 207 - second pulling block, 208 - pull rod, 209 - third nut. Detailed implementation manners

[0020] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0021] First embodiment:

[0022] Please refer to Figures 1 to 3 , where Figure 1 is the schematic diagram of the overall structure of the two-magnet structure of silicon steel sheets with a large deflection angle, Figure 2 is the schematic diagram of the structure of the first connection component, Figure 3 is Figure 2 the enlarged view of part A.

[0023] The utility model provides a two-magnet structure of silicon steel sheet type with large deflection angle, which includes a first magnet 101, a second magnet 102 and a first connection component 103. The first connection component 103 includes a first outer arc plate 104, a second outer arc plate 105, a first ear 106, a second ear 107 and a first connecting piece 108. The first connecting piece 108 includes a threaded rod 109, a first nut 110 and a second nut 111. By adopting silicon steel sheets instead of the traditional DT4 pure iron structure, the eddy current resistance of the magnet is significantly improved. At the same time, the method of segmented design and stacking is adopted to overcome the problem that it is difficult to ensure a high stacking coefficient in the traditional one-time stacking process. Through precise cutting and assembly, it is ensured that the stacking coefficient of the magnet reaches or exceeds 97%, significantly reducing the cumulative error of the split blocks and improving the overall accuracy and performance of the magnet. Finally, the first ear 106 and the second ear 107 are connected by the first connecting piece 108, and then the first outer arc plate 104 and the second outer arc plate 105 are connected, so as to connect the first magnet 101 and the second magnet 102. It can be understood that the foregoing solution can be used to reduce the external dimensions of the silicon steel sheet, reduce the material cost and processing difficulty, facilitate the development of the magnet towards miniaturization, and can also be used to improve the accuracy and stability of the connecting piece between the first magnet 101 and the second magnet 102.

[0024] For this specific embodiment, the first magnet 101 is arranged on one side of the second magnet 102; the first magnet 101 and the second magnet 102 are stacked in segments designed according to requirements by silicon steel sheets with a thickness of 0.25 - 0.5 mm. Then, the two end faces of the punched sheet stack are cut according to the designed angle to ensure the dimensional accuracy and angle. Finally, a fitting die tooling is designed, and the cut parts are assembled according to the positions, and welded and processed. The designer designs a reasonable cross-sectional size of the silicon steel sheet according to actual requirements, and then designs the cutting angle and length of the split blocks, assembles each split block into a shape, and conducts simulation calculations at the same time. The designed structure can not only meet the physical design requirements but also meet the processing and manufacturing requirements.

[0025] Among them, the first outer arc plate 104 is fixedly connected to the first magnet 101 and is located on one side of the first magnet 101. The second outer arc plate 105 is fixedly connected to the second magnet 102 and is located on one side of the second magnet 102. The first ear 106 is fixedly connected to the first outer arc plate 104 and is located on the side of the first outer arc plate 104 away from the first magnet 101. The second ear 107 is fixedly connected to the second outer arc plate 105 and is located on the side of the second outer arc plate 105 away from the second magnet 102. Both ends of the first connecting member 108 are respectively connected to the first ear 106 and the second ear 107, and the first connecting member 108 is located between the first ear 106 and the second ear 107. A plurality of the first ears 106 are provided on the first outer arc plate 104, and a plurality of the second ears 107 are provided on the second outer arc plate 105. The number and position of the first ears 106 are the same as those of the first ears 106. The first connecting member 108 is used to connect the first ear 106 and the second ear 107. When connecting the produced first magnet 101 and the second magnet 102, the first outer arc plate 104 and the second outer arc plate 105 are respectively installed on the outer sides of the first magnet 101 and the second magnet 102, then the first magnet 101 and the second magnet 102 are aligned and fitted, and finally a plurality of the first ears 106 and the second ears 107 are connected through the first connecting member 108, thereby connecting the first magnet 101 and the second magnet 102. At the same time, a first inner arc plate 112 and a second inner arc plate 113 are also provided inside the first magnet 101 and the second magnet 102. The first inner arc plate 112 and the second inner arc plate 113 are also provided with ears and connecting members, and their connection structures and principles are the same as those of the first outer arc plate 104, the second outer arc plate 105 and the first connecting member 108, and will not be elaborated here. By designing the assembly structure, the cut parts are assembled, welded and processed modularly. This design not only simplifies the production process and improves the production efficiency, but also facilitates subsequent maintenance and replacement. At the same time, the modular design also enhances the reliability and durability of the magnet. The first inner arc plate 112, the second inner arc plate 113 and the corresponding first outer arc plate 104 and second outer arc plate 105 are respectively provided inside and outside the magnet, and are fixedly connected through ears and connecting members. This internal and external support structure not only enhances the mechanical strength of the magnet, but also ensures the stability of the magnet under the action of a high-speed ion beam, reducing the performance degradation caused by vibration or impact.

[0026] Secondly, the threaded rod 109 passes through the first ear 106 and the second ear 107; the first nut 110 is threadedly connected to the threaded rod 109, abuts against the first ear 106, and is sleeved on the threaded rod 109; the second nut 111 is threadedly connected to the threaded rod 109, abuts against the second ear 107, and is sleeved on the threaded rod 109; through holes matching the threaded rod 109 are provided on the first ear 106 and the second ear 107. During use, the threaded rod 109 is respectively passed through the first ear 106 and the second ear 107, and then the first nut 110 and the second nut 111 are respectively screwed tightly at both ends of the threaded rod 109, so that the first nut 110 and the second nut 111 respectively abut tightly against the first ear 106 and the second ear 107, thereby completing the connection of the first outer arc plate 104 and the second outer arc plate 105; then the first inner arc plate 112 and the second inner arc plate 113 are connected in the same way, so that the first magnet 101 and the second magnet 102 can be tightly connected.

[0027] Using the large deflection angle silicon steel sheet type two-magnet structure of this embodiment, which adopts a process structure of segmented stacking, segmented cutting and then reassembly, greatly reduces the external dimensions of the silicon steel sheet, reduces the material cost and processing difficulty, and facilitates the development of the magnet towards the trend of miniaturization; at the same time, the first connecting member 108 is used to connect the first ear 106 and the second ear 107, and further makes the first outer arc plate 104 and the second outer arc plate 105 approach each other, so that the first magnet 101 and the second magnet 102 are tightly abutted. At the same time, the first inner arc plate 112 and the second inner arc plate 113 are also arranged inside the first magnet 101 and the second magnet 102, further improving the connection stability between the first magnet 101 and the second magnet 102.

[0028] Second Embodiment:

[0029] On the basis of the first embodiment, please refer to Figures 4 to 6 , Figure 4 which is a schematic diagram of the installation structure of the first end plate of the second embodiment, Figure 5 is the second embodiment of Figure 4 enlarged view at B, Figure 6 which is a schematic diagram of the installation structure of the bottom plate of the second embodiment. The first connection assembly 103 of this embodiment further includes a first end plate 201, a second end plate 202, a second connecting member 203, a top plate 204, a bottom plate 205, a first pulling block 206, a second pulling block 207, a pull rod 208 and a third nut 209.

[0030] For this specific embodiment, the first end plate 201 is fixedly connected to the first magnet 101 and is located on one side of the first magnet 101; the second end plate 202 is fixedly connected to the second magnet 102 and is located on one side of the second magnet 102; the second connecting member 203 is respectively connected to the first end plate 201 and the second end plate 202; two first end plates 201 and two second end plates 202 are respectively provided and are located on both sides of the first magnet 101 and the second magnet 102. The first end plate 201 and the second end plate 202 are connected by the second connecting member 203, so that the left and right sides of the first magnet 101 and the second magnet 102 can be tightly connected. At the same time, the first magnet 101 and the second magnet 102 can be aligned on both sides through the first end plate 201 and the second end plate 202, improving the connection accuracy of the first magnet 101 and the second magnet 102.

[0031] Wherein, the top plate 204 is fixedly connected to the first magnet 101 and is fixedly connected to the first end plate 201 and is located at the top of the first magnet 101; the bottom plate 205 is fixedly connected to the second magnet 102 and is fixedly connected to the second end plate 202 and is located at the bottom of the second magnet 102; the top plate 204 is respectively fixedly connected to the two first end plates 201, the bottom plate 205 is respectively fixedly connected to the two second end plates 202, the top plate 204 and the bottom plate 205 have the same structure. The two first end plates 201 are connected by the top plate 204 respectively, the two second end plates 202 are connected by the bottom plate 205 respectively. The symmetry and consistency of the two-side magnets in the vertical direction are ensured by the top plate 204, the bottom plate 205, the two first end plates 201 and the two second end plates 202, improving the performance and accuracy of the magnets. They work together to firmly connect the first magnet 101 and the second magnet 102 together, forming a two-pole magnet unit with a compact structure and stable performance.

[0032] Secondly, the first pulling block 206 is fixedly connected to the first end plate 201 and is located on one side of the first end plate 201; the second pulling block 207 is fixedly connected to the second end plate 202 and is located on one side of the second end plate 202; the pulling rod 208 abuts against the first pulling block 206 and penetrates through the first pulling block 206 and the second pulling block 207; the third nut 209 is threadedly connected to the pulling rod 208 and abuts against the second pulling block 207; through holes matching with the pulling rod 208 are arranged on the first pulling block 206 and the second pulling block 207. During installation, the pulling rod 208 is passed through the through holes on the first pulling block 206 and the second pulling block 207, and then the third nut 209 is threadedly connected to the pulling rod 208, so that the pulling rod 208 and the third nut 209 respectively abut against the first pulling block 206 and the second pulling block 207, thereby tightening the first pulling block 206 and the second pulling block 207 through the connecting rod, and further tightening the first end plate 201, the second end plate 202, the first magnet 101 and the second magnet 102.

[0033] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A two-magnet structure of silicon steel sheet with large deflection angle, characterized in that it includes a first magnet, a second magnet and a first connection assembly, and the first magnet is arranged on one side of the second magnet; The first connection assembly includes a first outer arc plate, a second outer arc plate, a first ear, a second ear and a first connecting piece. The first outer arc plate is fixedly connected to the first magnet and is located on one side of the first magnet. The second outer arc plate is fixedly connected to the second magnet and is located on one side of the second magnet. The first ear is fixedly connected to the first outer arc plate and is located on the side of the first outer arc plate away from the first magnet. The second ear is fixedly connected to the second outer arc plate and is located on the side of the second outer arc plate away from the second magnet. Two ends of the first connecting piece are respectively connected to the first ear and the second ear, and the first connecting piece is located between the first ear and the second ear.

2. The two-magnet structure of silicon steel sheet with large deflection angle according to claim 1, characterized in that the first connecting piece includes a threaded rod, a first nut and a second nut, and the threaded rod passes through the first ear and the second ear; the first nut is threadedly connected to the threaded rod, abuts against the first ear, and is sleeved on the threaded rod; the second nut is threadedly connected to the threaded rod, abuts against the second ear, and is sleeved on the threaded rod.

3. The two-magnet structure of silicon steel sheet with large deflection angle according to claim 2, characterized in that the first connection assembly further includes a first end plate, a second end plate and a second connecting piece. The first end plate is fixedly connected to the first magnet and is located on one side of the first magnet; the second end plate is fixedly connected to the second magnet and is located on one side of the second magnet; the second connecting piece is respectively connected to the first end plate and the second end plate.

4. The two-magnet structure of silicon steel sheet with large deflection angle according to claim 3, characterized in that the first connection assembly further includes a top plate and a bottom plate. The top plate is fixedly connected to the first magnet, fixedly connected to the first end plate, and is located on the top of the first magnet; the bottom plate is fixedly connected to the second magnet, fixedly connected to the second end plate, and is located on the bottom of the second magnet.

5. The two-magnet structure of silicon steel sheet with large deflection angle according to claim 3, characterized in that the second connecting piece includes a first pulling block, a second pulling block, a pull rod and a third nut. The first pulling block is fixedly connected to the first end plate and is located on one side of the first end plate; the second pulling block is fixedly connected to the second end plate and is located on one side of the second end plate; the pull rod abuts against the first pulling block and passes through the first pulling block and the second pulling block; the third nut is threadedly connected to the pull rod and abuts against the second pulling block.

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