A sub-magnetic shield box for reducing magnetic flux leakage

Abstract

The utility model provides a kind of submagnetic shielding box for reducing magnetic flux leakage, it includes submagnetic shielding box main part;The submagnetic shielding box main part is provided with first protruding neck on its one side, the inside of the first protruding neck forms the internal passage of the submagnetic shielding box, and the outside of the first protruding neck is provided with first protruding neck shielding plate.In the first protruding neck, more protruding necks can be nested in turn.The submagnetic shielding box of the utility model can form a submagnetic field environment below 200nT, and can be used for plant and animal research in various submagnetic field environments.

Description

Technical Field

[0001] This utility model relates to the field of submagnetic shielding technology, and more specifically to a submagnetic shielding box that reduces magnetic leakage. Background Technology

[0002] Submagnetic fields, microgravity, and space radiation are considered the three major environmental characteristics of space. Previous space biology research focused on the effects of space radiation and microgravity, with limited understanding of the biological effects of submagnetic fields. However, existing research shows that submagnetic environments can interfere with normal cellular metabolism and growth, affecting various animals, including mammals, and plants to varying degrees, with a particularly significant negative impact on animal behavior. China's space exploration program is progressing at an unprecedented pace, with lunar and Mars exploration missions actively under preparation. The assessment and prevention of submagnetic effects are crucial considerations for space life support.

[0003] On the ground, submagnetic environments are primarily achieved through two methods: constructing geomagnetic shielding boxes using highly permeable materials or using compensating coils to counteract the effects of the Earth's magnetic field. Currently, there are no standardized specifications for submagnetic devices, and magnetic field conditions vary considerably, requiring verification of the generalizability and comparability of existing research results. While magnetic shielding can achieve a larger submagnetic space and shielding efficiency, the internal magnetic field is uncontrollable. Furthermore, conventional sliding, rail, or inlaid door designs struggle to prevent magnetic leakage from door openings from influencing the magnetic field near the doorway. In particular, the effects of submagnetism on plants and animals are often weak, necessitating monitoring of long-term cumulative effects and regular feeding, water changes, and sampling of long-term cultured samples. Large shielding boxes / chambers typically have large openings for ease of operation, but significant magnetic leakage occurs when the door is opened, making it difficult to prevent the leakage of magnetic fields during opening operations from affecting plant and animal samples, potentially impacting experimental results, especially in long-term animal studies. Utility Model Content

[0004] This utility model provides a submagnetic shielding box for reducing magnetic leakage. The submagnetic shielding box includes a submagnetic shielding box body. The submagnetic shielding box body has a first protruding neck on one side. The interior of the first protruding neck forms an internal and external channel of the submagnetic shielding box. A first protruding neck shielding plate is provided on the outside of the first protruding neck.

[0005] In some embodiments, the submagnetic shielding box body has a second protruding neck nested inside the first protruding neck, and a second protruding neck shielding plate is provided on the outside of the second protruding neck.

[0006] In some embodiments, the submagnetic shielding box body has a third protruding neck nested inside the second protruding neck, and a third protruding neck shielding plate is provided on the outside of the third protruding neck.

[0007] In some embodiments, the first protruding neck, the second protruding neck, and / or the third protruding neck are rectangular parallelepipeds.

[0008] In some implementations, the submagnetic shielding box body is rectangular in shape.

[0009] In some embodiments, the first protruding neck shield, the second protruding neck shield, and / or the third protruding neck shield are provided with a locking frame to facilitate engagement with the corresponding first protruding neck, the second protruding neck, and / or the third protruding neck.

[0010] In some embodiments, the first protruding neck shield, the second protruding neck shield, and / or the third protruding neck shield are provided with reinforcing rods.

[0011] In some implementations, the first, second, and third protruding neck shields are provided with through holes for the camera to be inserted into the housing for monitoring and analysis.

[0012] In some implementations, a camera is installed inside the submagnetic shielding box body, and a wire connected to the camera extends from the through hole to the outside of the submagnetic shielding box.

[0013] In some implementations, the first protruding neck shield, the second protruding neck shield, and the third protruding neck shield are provided with one or two handles.

[0014] The submagnetic shielding box of this invention can form a submagnetic field environment of less than 200 nT, which can be used for the study of plants and animals in various submagnetic field environments. Attached Figure Description

[0015] Figure 1 This is a top sectional view of the submagnetic shielding box of this utility model;

[0016] Figure 2 This is a front view of the main body of the submagnetic shielding box of this utility model;

[0017] Figure 3 Top sectional view of each prominent neck;

[0018] Figure 4 Front view of each prominent neck;

[0019] Figure 5 This is an exploded view of the protruding neck of this utility model. Only two protruding necks are shown in the figure.

[0020] Reference numerals: 1. Main body of the shielding box; 2. First protruding neck; 3. Internal and external channels; 4. Shielding plate of the first protruding neck; 5. Second protruding neck; 6. Shielding plate of the second protruding neck; 7. Shielding plate of the third protruding neck; 8. Shielding plate of the third protruding neck; 9. Frame; 10. Handle; 11. Reinforcing rod; 12. Through hole; 13. Ventilation fan. Detailed Implementation

[0021] Unless otherwise stated, all technical and scientific terms used herein have the meanings commonly understood by one of ordinary skill in the art.

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely exemplary, and all other embodiments obtained by those skilled in the art based on this utility model without inventive effort are within the scope of protection of this utility model.

[0023] Refer to the instruction manual appendix Figure 1-5 This invention provides a submagnetic shielding box for reducing magnetic leakage, comprising a shielding box body 1 and a first protruding neck 2 disposed on one side thereon. The first protruding neck 2 is hollow inside, forming an internal and external channel 3 of the submagnetic shielding box. Experimenters can place or remove experimental animals or plants into or from the submagnetic shielding box through this internal and external channel 3. A first protruding neck shielding plate 4, serving as its cover, is disposed on the outer side of the first protruding neck 2 (relatively away from the shielding box body 1). The shielding box body 1, the first protruding neck 2, and the first protruding neck shielding plate 4 are all made of magnetic shielding material, such as an alloy material, like permalloy. The presence of the first protruding neck 2 extends the area susceptible to magnetic leakage from opening the door (i.e., removing or otherwise separating the first protruding neck shielding plate 4 from the first protruding neck 2, thereby opening the internal and external channel 3) to the outside of the submagnetic shielding box, thus ensuring the shielding effect inside the box. This invention does not have a particular limitation on the external shape of the first protruding neck 2, for example, it can be a cuboid, a cylinder, etc.

[0024] To further enhance the magnetic shielding effect, a second protruding neck 5 can be nested within the first protruding neck 2. The shape of the second protruding neck 5 can be the same as or different from that of the first protruding neck 2. When the second protruding neck 5 is present, an internal and external channel 3 is formed inside it. Similarly, a second protruding neck shielding plate 6 is provided on the outside of the second protruding neck 5. Furthermore, a third protruding neck 7 can be nested within the second protruding neck 5. The shape of the third protruding neck 7 can be the same as or different from that of the first protruding neck 2 and / or the second protruding neck 5. When the third protruding neck 7 is present, an internal and external channel 3 of the submagnetic shielding box is formed inside it. Similarly, a third protruding neck shielding plate 8 is provided on the outside of the third protruding neck 7. It is understood that more protruding necks can be nested for magnetic shielding purposes.

[0025] The submagnetic shielding box body 1 can also be a three-layer structure, with the first protruding neck 2, the second protruding neck 5, and the third protruding neck 7 nested as described above, formed sequentially from the outer layer to the inner layer. The multi-layer structure of the submagnetic shielding box body 1 can further improve the magnetic shielding effect.

[0026] There are no special requirements for the connection method between each protruding neck and its corresponding shielding plate, as long as it facilitates the attachment of the shielding plate to the outside of the protruding neck. A sliding door or recessed door type connection can be used. In one embodiment, each shielding plate is also fixedly provided with a clip frame 9 on one side for engaging with the outside of the protruding neck. This connection method facilitates the removal and installation of the shielding plate by workers on the protruding neck. Additionally, one or two handles 10 can be provided on the shielding plate for easy removal or movement. The shielding plate itself is made of magnetic shielding material and serves as a cover for the protruding neck to prevent magnetic leakage through the internal and external channels 3. The shape of the shielding plate itself only needs to be suitable for use as a cover for the protruding neck and ensure that its edges are in close contact with the protruding neck.

[0027] To ensure the stability of the shielding plate and prevent deformation, reinforcing rods 11 can be installed on the shielding plate. The reinforcing rods 11 can be arranged in a grid pattern.

[0028] To facilitate observation of the experimental samples, a fixed lighting device was installed inside the submagnetic shielding box. Through holes 12 were provided on each shielding plate to facilitate monitoring of the camera's entry and exit from the submagnetic shielding box.

[0029] In addition, a ventilation fan 13 can be installed on the main body 1 of the shielding box to ensure air exchange and circulation inside the submagnetic shielding box.

[0030] In use, the submagnetic shielding box of this invention can be opened by sequentially removing the first protruding neck shielding plate 4, the second protruding neck shielding plate 6 (if any), and the third protruding neck shielding plate 8 (if any). Experimental samples or monitoring cameras can then be placed or removed via the internal and external channels 3. After the operation is completed, the third protruding neck shielding plate 8 (if any), the second protruding neck shielding plate 6 (if any), and the first protruding neck shielding plate 4 are sequentially reinstalled to close the box. Due to the presence of the protruding neck shielding channels, an extremely low magnetic field strength is ensured inside the submagnetic shielding box during the opening and closing process.

[0031] Testing revealed that the submagnetic shielding box of this invention, made of permalloy (1J85), with components heat-treated at a temperature exceeding 1000℃ after forming, and internal dimensions of 800×800×1400mm and a third protruding neck sampling port size of 400×400×200mm, achieved a submagnetic magnetic field (≤5μT) under normal geomagnetic conditions (approximately 50μT). For instance, when the external indoor geomagnetic field strength was 46.6μT, the magnetic field at the bottom of the shielding box cavity with the door open did not exceed 200nT, and in most areas did not exceed 100nT. The magnetic field strength at the box opening was not significantly different from other internal locations, effectively solving the problem of magnetic leakage when the door is open. Since the data was obtained with the shielding box door open, the shielding effect should be even better with the door closed; the magnetic shielding effect of the shielding box far exceeded expectations. Considering that the animals spend most of their time on the bottom, animal experiments in shielded enclosures can ensure that they are in a sub-magnetic field of less than 200 nT at all times.

[0032] Those skilled in the art should understand that the features of the embodiments disclosed in this application can be combined, rearranged, etc., to generate other embodiments within the scope of this utility model, and various other changes, omissions, and additions can be made without departing from the spirit and scope of this utility model.

Claims

1. A submagnetic shielding box for reducing magnetic leakage, characterized in that: The submagnetic shielding box includes a submagnetic shielding box body (1); the submagnetic shielding box body (1) has a first protruding neck (2) on one side, the inner and outer channels (3) of the submagnetic shielding box are formed inside the first protruding neck (2), and a first protruding neck shielding plate (4) is provided on the outer side of the first protruding neck (2).

2. The submagnetic shielding box according to claim 1, characterized in that: The submagnetic shielding box body (1) has a second protruding neck (5) nested inside the first protruding neck (2), and a second protruding neck shielding plate (6) is provided on the outside of the second protruding neck (5).

3. The submagnetic shielding box according to claim 2, characterized in that: The submagnetic shielding box body (1) has a third protruding neck (7) nested inside the second protruding neck (5), and a third protruding neck shielding plate (8) is provided on the outside of the third protruding neck (7).

4. The submagnetic shielding box according to claim 3, characterized in that: The first protruding neck (2), the second protruding neck (5) and / or the third protruding neck (7) are rectangular parallelepipeds.

5. The submagnetic shielding box according to claim 1, wherein the main body (1) of the submagnetic shielding box is in the shape of a cuboid.

6. The submagnetic shielding box according to claim 3, characterized in that: The first protruding neck shield (4), the second protruding neck shield (6) and / or the third protruding neck shield (8) are provided with a locking frame (9) to facilitate engagement with the corresponding first protruding neck (2), the second protruding neck (5) and / or the third protruding neck (7).

7. The submagnetic shielding box according to claim 3, characterized in that: The first protruding neck shield (4), the second protruding neck shield (6) and / or the third protruding neck shield (8) are provided with reinforcing rods (11).

8. The submagnetic shielding box according to claim 3, characterized in that: The first protruding neck shield (4), the second protruding neck shield (6) and the third protruding neck shield (8) are provided with through holes (12).

9. The submagnetic shielding box according to claim 8, characterized in that: A camera is installed inside the main body (1) of the submagnetic shielding box, and a wire connected to the camera extends from the through hole (12) to the outside of the submagnetic shielding box.

10. The submagnetic shielding box according to claim 3, characterized in that: The first protruding neck shield (4), the second protruding neck shield (6) and the third protruding neck shield (8) are provided with one or two handles (10).

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