Liquid-helium-free superconducting magnet cooling device

Abstract

The utility model relates to the technical field of superconducting magnet cooling, and discloses a liquid-helium-free superconducting magnet cooling device which comprises an installation disc, the inner wall of the installation disc is fixedly connected with a magnet container body, the outer wall of the installation disc is fixedly connected with an electric push rod, and the output end of the electric push rod is fixedly provided with a sliding block. A sliding strip is slidably connected to the outer wall of the sliding block, the upper surface of the sliding strip is fixedly connected to the inner wall of the magnet container body, a sealing disc is fixedly connected to the outer wall of the sliding block, the inner wall of the rotating ring is rotatably connected to the inner wall of the magnet container body, and a sealing assembly is arranged on the inner wall of the sealing disc; the sealing assembly is used for maintaining the vacuum environment of the equipment. According to the utility model, the sliding block is pushed and pulled through the electric push rod, so that the sliding block drives the sealing disc to slide, and the effects of keeping the vacuum degree around the magnet, enabling the magnet to be in a low-heat-conduction environment, maintaining a low-temperature state and reducing the refrigeration burden of a refrigerator are achieved.

Description

Technical Field

[0001] This utility model relates to the field of superconducting magnet cooling technology, and in particular to a liquid helium-free superconducting magnet cooling device. Background Technology

[0002] A liquid helium-free superconducting magnet is a magnet device that can achieve a superconducting state without using liquid helium as a cooling medium.

[0003] Superconducting materials exhibit superconducting properties only at specific low temperatures. Cooling devices can provide and maintain such a low-temperature environment for superconducting magnets, ensuring that the superconducting materials retain their superconducting properties, thereby enabling the magnets to generate strong magnetic fields without energy loss.

[0004] An existing liquid helium-free superconducting magnet cooling device requires maintaining a high vacuum state inside the magnet container to reduce heat conduction and convection. However, during installation and operation, components such as the cold head and the cold conductor may experience positional deviations, which reduces the docking accuracy between the cold head and the cold conductor, leading to a decrease in vacuum and increasing the burden on the refrigerator. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a liquid helium-free superconducting magnet cooling device, which aims to solve the problem that existing liquid helium-free superconducting magnet cooling devices may experience positional deviations during installation and operation, resulting in reduced docking accuracy between the cold head and the cooling seat, leading to a decrease in vacuum and an increase in the burden on the refrigerator.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A liquid helium-free superconducting magnet cooling device includes a mounting plate. A magnet container body is fixedly connected to the inner wall of the mounting plate. An electric push rod is fixedly connected to the outer wall of the mounting plate. A slider is fixedly mounted at the output end of the electric push rod. A slide bar is slidably connected to the outer wall of the slider. The upper surface of the slide bar is fixedly connected to the inner wall of the magnet container body. A sealing plate is fixedly connected to the outer wall of the slider. The outer wall of the sealing plate is slidably connected to the inner wall of the magnet container body. A fixing column is fixedly connected to the outer wall of the sealing plate. A connecting rod is rotatably connected to the outer wall of the slider. A rotating ring is rotatably connected to the inner wall of the connecting rod. The inner wall of the rotating ring is rotatably connected to the inner wall of the magnet container body. A sealing assembly is provided on the inner wall of the sealing plate. The sealing assembly is used to maintain the vacuum environment of the device.

[0008] Preferably, the sealing assembly includes a sealing strip, the outer wall of which is fixedly connected to the inner wall of the sealing disc, the inner wall of the sealing disc is provided with a sealing groove, and the inner wall of the sealing groove is slidably connected to the outer wall of the sealing strip.

[0009] Preferably, a hollow column is fixedly connected to the inner wall of the mounting plate, a connecting column is slidably connected to the inner wall of the hollow column, and the outer wall of the connecting column is slidably connected to the inner wall of the mounting plate.

[0010] Preferably, a sliding plate is fixedly connected to the outer wall of the connecting column, a limiting strip is fixedly connected to the outer wall of the sliding plate, and the outer wall of the limiting strip is slidably connected to the inner wall of the hollow column.

[0011] Preferably, a spring is fixedly connected to the upper surface of the slide, and the upper surface of the spring is fixedly connected to the inner top wall of the hollow column.

[0012] Preferably, the inner wall of the hollow column is provided with a limiting groove, the inner wall of the limiting groove is slidably connected to the outer wall of the limiting strip, and a fixing block is fixedly connected to the upper surface of the connecting column.

[0013] Preferably, the outer wall of the fixing block is rotatably connected to a first rotating rod, the inner wall of the first rotating rod is rotatably connected to a support bar, and the outer wall of the support bar is slidably connected to the inner wall of the mounting plate.

[0014] Preferably, a locking block is fixedly connected to the outer wall of the support bar, and a second rotating rod is rotatably connected to the outer wall of the support bar, with the inner wall of the second rotating rod rotatably connected to the outer wall of the hollow column.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the slider is pushed and pulled by the electric push rod, which causes the slider to drive the sealing plate to slide. The fixing column fixed on the inner wall of the sealing plate achieves the effect of internally supporting and fixing the cold head of the refrigerator, the cold guide seat and other components. This can improve the alignment accuracy between the cold head of the refrigerator and the superconducting magnet, maintain the vacuum around the magnet, keep the magnet in a low thermal conductivity environment, maintain a low temperature state, and reduce the cooling load of the refrigerator.

[0017] 2. In this utility model, pushing the connecting column causes the fixing block to slide along the support strip, so that the locking block can lock the cold head of the refrigeration unit, the cold guide seat and other components. By rotating the limiting strip into the limiting groove, the cold head equipment can be quickly installed and disassembled, which facilitates the maintenance and replacement of the cold head equipment. This not only shortens the maintenance time but also reduces the difficulty of operation, improves the performance and efficiency of the equipment, and also protects the performance and stability of the superconducting magnet. Attached Figure Description

[0018] Figure 1 This is a perspective view of a liquid helium-free superconducting magnet cooling device proposed in this utility model;

[0019] Figure 2 This is a partial structural diagram of the slider of a liquid helium-free superconducting magnet cooling device proposed in this utility model;

[0020] Figure 3 This is a partial structural diagram of the sealing strip of a liquid helium-free superconducting magnet cooling device proposed in this utility model;

[0021] Figure 4 This is a partial structural diagram of the first rotating rod of a liquid helium-free superconducting magnet cooling device proposed in this utility model.

[0022] Legend:

[0023] 1. Mounting plate; 2. Electric push rod; 3. Slider; 4. Sliding bar; 5. Sealing plate; 6. Fixing post; 7. Connecting rod; 8. Rotary ring; 9. Magnet container body; 10. Sealing groove; 11. Sealing strip; 12. Hollow column; 13. Connecting post; 14. Sliding plate; 15. Limiting bar; 16. Spring; 17. Limiting groove; 18. First rotating rod; 19. Support bar; 20. Locking block; 21. Second rotating rod; 22. Fixing block. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Reference Figures 1-3 This utility model provides an embodiment of a liquid helium-free superconducting magnet cooling device, comprising a mounting plate 1, a magnet container body 9 fixedly connected to the inner wall of the mounting plate 1, an electric push rod 2 fixedly connected to the outer wall of the mounting plate 1, a slider 3 fixedly mounted at the output end of the electric push rod 2, a slide bar 4 slidably connected to the outer wall of the slider 3, the upper surface of the slide bar 4 fixedly connected to the inner wall of the magnet container body 9, and a sealing plate 5 fixedly connected to the outer wall of the slider 3, the outer wall of the sealing plate 5 slidably connected to the inner wall of the magnet container body 9, for sealing. A fixed column 6 is fixedly connected to the outer wall of the disk 5, a connecting rod 7 is rotatably connected to the outer wall of the slider 3, a rotating ring 8 is rotatably connected to the inner wall of the connecting rod 7, and the inner wall of the rotating ring 8 is rotatably connected to the inner wall of the magnet container body 9. A sealing assembly is provided on the inner wall of the sealing disk 5. The sealing assembly is used to maintain the vacuum environment of the equipment. The sealing assembly includes a sealing strip 11. The outer wall of the sealing strip 11 is fixedly connected to the inner wall of the sealing disk 5. A sealing groove 10 is provided on the inner wall of the sealing disk 5. The inner wall of the sealing groove 10 is slidably connected to the outer wall of the sealing strip 11.

[0026] Specifically, the electric push rod 2 fixed by the mounting plate 1 pushes the slider 3, causing the slider 3 to slide inside the slide bar 4, fixing the slide bar 4 to the inner wall of the magnet container body 9, thus preventing the slider 3 from falling off. The slider 3 drives the connecting rod 7 to slide, causing the connecting rod 7 to drive the rotating ring 8 to rotate on the inner wall of the magnet container body 9, enabling the slider 3 to achieve a linkage and centering effect. The slider 3 drives the sealing plate 5 to slide on the inner wall of the magnet container body 9, causing the sealing groove 10 and the sealing strip 11 to align with each other, achieving a sealing effect. The sealing plate 5 drives the fixing column 6 to slide, which can not only limit the sealing plate 5 during use, but also internally support and fix the cold head of the refrigerator, the cold guide seat and other components. At the same time, it can improve the alignment accuracy between the cold head of the refrigerator and the superconducting magnet, maintain the vacuum around the magnet, keep the magnet in a low thermal conductivity environment, maintain a low temperature state, and reduce the cooling load of the refrigerator.

[0027] Reference Figure 1 and Figure 4 A hollow column 12 is fixedly connected to the inner wall of the mounting plate 1. A connecting column 13 is slidably connected to the inner wall of the hollow column 12. The outer wall of the connecting column 13 is slidably connected to the inner wall of the mounting plate 1. A sliding plate 14 is fixedly connected to the outer wall of the connecting column 13. A limit strip 15 is fixedly connected to the outer wall of the sliding plate 14. The outer wall of the limit strip 15 is slidably connected to the inner wall of the hollow column 12. A spring 16 is fixedly connected to the upper surface of the sliding plate 14. The upper surface of the spring 16 is fixedly connected to the inner top wall of the hollow column 12. The inner wall of the hollow column 12 is provided with... The inner wall of the limiting groove 17 is slidably connected to the outer wall of the limiting strip 15. The upper surface of the connecting column 13 is fixedly connected to the fixing block 22. The outer wall of the fixing block 22 is rotatably connected to the first rotating rod 18. The inner wall of the first rotating rod 18 is rotatably connected to the support strip 19. The outer wall of the support strip 19 is slidably connected to the inner wall of the mounting plate 1. The outer wall of the support strip 19 is fixedly connected to the locking block 20. The outer wall of the support strip 19 is rotatably connected to the second rotating rod 21. The inner wall of the second rotating rod 21 is rotatably connected to the outer wall of the hollow column 12.

[0028] Specifically, the hollow column 12 fixed to the inner wall of the mounting plate 1 allows the connecting column 13 to slide stably with a limiting effect. The connecting column 13 drives the sliding plate 14 to slide, causing the limiting strip 15 fixed to the outer wall of the sliding plate 14 to slide on the inner wall of the hollow column 12. The limiting strip 15 can slide through the hollow column 12 to the inner wall of the limiting groove 17. During use, the connecting column 13 has a self-locking effect. The spring 16 pushes the sliding plate 14, allowing the sliding plate 14 to automatically reset. The connecting column 13 drives the fixed block 22 to slide, allowing the fixed block 22 to push the first rotating rod 1. The first rotating rod 18 drives the support bar 19 to slide on the inner wall of the mounting plate 1, allowing the locking block 20 to be quickly installed and removed during use. The second rotating rod 21, which rotates on the outer wall of the hollow column 12, pulls the support bar 19, preventing it from falling off during use. The locking block 20 enables quick installation and removal of the cold head equipment, facilitating maintenance and replacement. This not only shortens maintenance time but also reduces operational difficulty, improves equipment performance and efficiency, and protects the performance and stability of the superconducting magnet.

[0029] Working principle: When the device is needed, pressing the connecting column 13 causes the sliding plate 14 to slide the limiting strip 15 against the inner wall of the hollow column 12. After sliding to the appropriate position, rotating the connecting column 13 causes the limiting strip 15 to slide against the inner wall of the limiting groove 17, achieving a self-locking effect. Then, the fixing block 22 drives the first rotating rod 18 to rotate, causing the first rotating rod 18 to push the support strip 19, allowing the locking block 20 to quickly fix the cold head device. The second rotating rod 21, which rotates on the outer wall of the hollow column 12, pulls the support strip 19, allowing the support strip 19 to slide against the inner wall of the mounting plate 1 while preventing it from falling off. The locking block 20 enables quick installation and disassembly of the cold head device, facilitating maintenance and replacement of the cold head device. This not only shortens maintenance time but also reduces operational difficulty, improves the performance and efficiency of the equipment, and protects the performance and stability of the superconducting magnet. The electric push rod 2 is activated, causing the slider 3 to slide on the inner wall of the slide bar 4. This allows the slider 3 to stably drive the sealing disc 5 to slide, preventing the sealing disc 5 from falling off. The slider 3 drives the connecting rod 7 to rotate, which in turn drives the rotating ring 8 to rotate, enabling the slider 3 to achieve a linkage and centering effect. The fixing column 6 fixed to the inner wall of the sealing disc 5 not only limits the sealing disc 5 during use but also provides internal support to fix the cold head equipment and prevent it from shifting. The sealing groove 10 and sealing strip 11 set on the inner wall of the sealing disc 5 provide a sealing effect when the sealing disc 5 is closed. When the cold head equipment needs to be replaced, closing the sealing disc 5 not only reduces the heat transfer caused by air conduction but also maintains the vacuum around the magnet, keeping the magnet in a low thermal conductivity environment, maintaining a low temperature, and reducing the cooling load of the refrigeration unit.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid-helium-free superconducting magnet cooling device comprising a mounting disc (1), characterized in that: The inner wall of the mounting disc (1) is fixedly connected with a magnet container body (9), the outer wall of the mounting disc (1) is fixedly connected with an electric push rod (2), the output end of the electric push rod (2) is fixedly provided with a sliding block (3), the outer wall of the sliding block (3) is slidably connected with a sliding bar (4), the upper surface of the sliding bar (4) is fixedly connected with the inner wall of the magnet container body (9), the outer wall of the sliding block (3) is fixedly connected with a sealing disc (5), the outer wall of the sealing disc (5) is slidably connected with the inner wall of the magnet container body (9), the outer wall of the sealing disc (5) is fixedly connected with a fixed column (6), the outer wall of the sliding block (3) is rotatably connected with a connecting rod (7), the inner wall of the connecting rod (7) is rotatably connected with a rotating ring (8), the inner wall of the rotating ring (8) is rotatably connected with the inner wall of the magnet container body (9), and the inner wall of the sealing disc (5) is provided with a sealing assembly.

2. A liquid-helium-free superconducting magnet cooling device according to claim 1, characterized in that: The sealing assembly comprises a sealing strip (11), and the outer wall of the sealing strip (11) is fixedly connected with the inner wall of the sealing disc (5).

3. A liquid-helium-free superconducting magnet cooling device according to claim 2, characterized in that: The inner wall of the mounting disc (1) is fixedly connected with a hollow column (12), and the inner wall of the hollow column (12) is slidably connected with a connecting column (13).

4. A liquid-helium-free superconducting magnet cooling device according to claim 3, characterized in that: The outer wall of the connecting column (13) is slidably connected with the inner wall of the mounting disc (1).

5. A liquid-helium-free superconducting magnet cooling device according to claim 4, characterized in that: The upper surface of the sliding disc (14) is fixedly connected with a spring (16), and the upper surface of the spring (16) is fixedly connected with the inner top wall of the hollow column (12).

6. A liquid-helium-free superconducting magnet cooling device according to claim 5, characterized in that: The inner wall of the hollow column (12) is provided with a limiting groove (17), the inner wall of the limiting groove (17) is slidably connected with the outer wall of the limiting strip (15), and the upper surface of the connecting column (13) is fixedly connected with a fixed block (22).

7. A liquid-helium-free superconducting magnet cooling device according to claim 6, characterized in that: The outer wall of the fixed block (22) is rotatably connected with a first rotating rod (18), the inner wall of the first rotating rod (18) is rotatably connected with a supporting strip (19), and the outer wall of the supporting strip (19) is slidably connected with the inner wall of the mounting disc (1).

8. A liquid-helium-free superconducting magnet cooling device according to claim 7, characterized in that: The outer wall of the supporting strip (19) is fixedly connected with a clamping block (20), the outer wall of the supporting strip (19) is rotatably connected with a second rotating rod (21), and the inner wall of the second rotating rod (21) is rotatably connected with the outer wall of the hollow column (12).

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