Self-shielding magnet structure for animal self-shielding MRI machine

Abstract

The present invention discloses a self-shielding magnet structure for animal self-shielding nuclear magnetic resonance machine, including a self-shielding magnet, a magnet waveguide, a shielding inner shell, an upper magnetic cover, a lower magnetic cover, a rear cover and a front frame, wherein the front side of the shielding inner shell is flush with the front side of the self-shielding magnet, the rear side of the shielding inner shell is exposed to the rear side of the self-shielding magnet, the rear cover is covered on the rear side of the shielding inner shell, and the front side of the rear cover is connected with the rear side of the self-shielding magnet, an upper magnetic cover mounting ring for matching the upper magnetic cover is provided in the middle of the top of the self-shielding magnet, and a lower magnetic cover mounting ring for matching the lower magnetic cover is provided in the middle of the bottom of the self-shielding magnet. The present invention adopts a frame-type self-shielding magnet, and a shielding inner shell is provided inside the self-shielding magnet for double shielding, and at the same time, the upper and lower magnetic covers are staggered in the middle position with the shielding inner shell to reduce the internal invalid space, and the installation space is reduced while ensuring the stability of its installation, and is suitable for small-volume nuclear magnetic detection equipment.

Description

Technical Field

[0001] The invention relates to a door structure, in particular to a self-shielding magnet structure specially used for an animal self-shielding nuclear magnetic resonance machine. Background Art

[0002] At present, animal MRI tests are generally conducted in MRI testing rooms of pet hospitals. Conventional MRI testing rooms usually occupy a large area, resulting in very high shielding requirements and high shielding costs. In addition, pet hospitals generally do not occupy a large area. Therefore, many of them do not have the conditions to build MRI testing rooms, resulting in these pet hospitals being unable to perform MRI tests on pets. Therefore, it is necessary to design a MRI testing device that occupies a small area specifically for pets. Conventional MRI testing rooms use a magnet structure, which not only occupies a large area and is not very suitable for small-volume MRI testing equipment, but also generally has no self-shielding function. Summary of the invention

[0003] In order to solve the defects and shortcomings in the above-mentioned prior art, the present invention provides a frame-type self-shielding magnet, and a shielding inner shell is arranged inside the self-shielding magnet for double shielding. At the same time, the middle positions of the upper and lower magnetic covers and the shielding inner shell are staggered. Under the premise of ensuring its installation stability, the installation space is reduced. The self-shielding magnet structure is suitable for animal self-shielding nuclear magnetic resonance machines on small-volume nuclear magnetic resonance detection equipment.

[0004] The technical solution of the present invention is as follows: a self-shielding magnet structure specially used for an animal self-shielding nuclear magnetic resonance machine, comprising a self-shielding magnet, a magnet waveguide installed on the top of the self-shielding magnet, a shielding inner shell installed inside the self-shielding magnet, an upper magnetic cover installed on the top of the shielding inner shell, a lower magnetic cover installed on the bottom of the shielding inner shell, a rear cover installed on the rear side of the self-shielding magnet, and a front frame installed on the front side of the self-shielding magnet, wherein the front side of the shielding inner shell is flush with the front side of the self-shielding magnet, the rear side of the shielding inner shell is exposed to the rear side of the self-shielding magnet, and the rear cover covers the shielding inner shell. On the rear side of the self-shielding magnet, and the front side of the rear cover is connected with the rear side of the self-shielding magnet, an upper magnetic cover mounting ring matching the upper magnetic cover is provided in the middle of the top of the self-shielding magnet, and a lower magnetic cover mounting ring matching the lower magnetic cover is provided in the middle of the bottom of the self-shielding magnet, a first rock wool is provided on the outer side of the self-shielding magnet and the rear cover, a second rock wool is provided between the shielding inner shell and the self-shielding magnet, a third rock wool is provided between the upper magnetic cover and the upper magnetic cover mounting ring, a fourth rock wool is provided between the lower magnetic cover and the lower magnetic cover mounting ring, and a fifth rock wool is provided between the self-shielding magnet and the front frame.

[0005] The present invention adopts a frame-type self-shielding magnet, and arranges a shielding inner shell inside the self-shielding magnet for double shielding. At the same time, the middle positions of the upper and lower magnetic covers and the shielding inner shell are staggered to reduce the internal invalid space. Under the premise of ensuring its installation stability, the installation space is reduced, and it is suitable for small-volume nuclear magnetic detection equipment.

[0006] Preferably, the self-shielding magnet includes a magnet top plate, a magnet bottom plate and two magnet side plates installed between the magnet top plate and the magnet bottom plate, the magnet top plate is provided with a waveguide tube mounting hole matching the magnet waveguide tube, the upper magnetic cover mounting ring is fixed in the middle of the lower side of the magnet top plate, and the lower magnetic cover mounting ring is fixed in the middle of the upper side of the magnet bottom plate.

[0007] This structure ensures its self-shielding effect. At the same time, the upper and lower magnetic covers are installed in the middle position of the self-shielding magnet and can be staggered with the middle position of the shielding inner shell, thereby reducing the internal invalid space.

[0008] Preferably, the front frame comprises two door rail beams, an upper baffle connected between the tops of the two door rail beams and a lower baffle connected between the bottoms of the two door rail beams, and the door rail beams and the front side of the self-shielding magnet are connected via a shielding plate.

[0009] This structure ensures the reliability of the front frame, facilitates the installation of the shielding door, and ensures the shielding effect of the front frame.

[0010] Preferably, the shielding inner shell includes an inner shell top plate, an inner shell bottom plate, and two inner shell side plates connected between the inner shell top plate and the inner shell bottom plate, the inner shell top plate is provided with an upper magnetic cover hole matching the upper magnetic cover, and the inner shell bottom plate is provided with a lower magnetic cover hole matching the lower magnetic cover.

[0011] This structure ensures the shielding effect of the shielding inner shell and facilitates the installation of the upper and lower magnetic covers.

[0012] Preferably, a bed rail beam matching the bed body is provided on the upper side of the magnet bottom plate, one end of the bed rail beam passes through the rear side of the magnet bottom plate, and a bed rail beam hole matching the bed rail beam is provided on the inner shell bottom plate.

[0013] This structure facilitates the installation of the bed and ensures that the bed slides smoothly and reliably.

[0014] Preferably, four support columns are provided on the lower side of the magnet bottom plate, and a sixth rock wool is provided on the front side of the shielding plate.

[0015] This structure ensures the firmness of the support for the self-shielding magnet, while ensuring the height of the self-shielding magnet and the self-shielding effect.

[0016] The present invention adopts a frame-type self-shielding magnet, and arranges a shielding inner shell inside the self-shielding magnet for double shielding. At the same time, the middle positions of the upper and lower magnetic covers and the shielding inner shell are staggered to reduce the internal invalid space. Under the premise of ensuring its installation stability, the installation space is reduced, and it is suitable for small-volume nuclear magnetic detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the structure of the present invention after the upper and lower magnetic covers are removed;

[0018] Figure 2 It is a schematic diagram of the decomposition of the present invention;

[0019] In the figure, 1. magnet top plate, 2. magnet bottom plate, 3. magnet side plate, 4. back cover, 5. magnet waveguide tube, 6. waveguide tube mounting hole, 7. upper magnetic cover, 8. lower magnetic cover, 9. upper magnetic cover mounting ring, 10. lower magnetic cover mounting ring, 11. first rock wool, 12. second rock wool, 13. third rock wool, 14. fourth rock wool, 15. fifth rock wool, 16. sixth rock wool, 17. door rail beam, 18. upper baffle plate, 19. lower baffle plate, 20. shielding plate, 21. inner shell top plate, 22. inner shell bottom plate, 23. inner shell side plate, 24. inner shell back plate, 25. upper magnetic cover hole, 26. lower magnetic cover hole, 27. bed rail beam, 28. bed rail beam hole, 29. support column. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings, but this does not limit the protection scope of the present invention.

[0021] like Figure 1 and 2As shown, a self-shielding magnet structure dedicated to an animal self-shielding nuclear magnetic resonance machine includes a self-shielding magnet, a magnet waveguide 5 installed on the top of the self-shielding magnet, a shielding inner shell installed inside the self-shielding magnet, an upper magnetic cover 7 installed on the top of the shielding inner shell, a lower magnetic cover 8 installed on the bottom of the shielding inner shell, a rear cover 4 installed on the rear side of the self-shielding magnet, and a front frame installed on the front side of the self-shielding magnet. The front side of the shielding inner shell is flush with the front side of the self-shielding magnet, the rear side of the shielding inner shell is exposed to the rear side of the self-shielding magnet, the rear cover 4 covers the rear side of the shielding inner shell, and the rear The front side of the cover 4 is connected to the rear side of the self-shielding magnet, an upper magnetic cover mounting ring 9 matching the upper magnetic cover 7 is provided in the middle of the top of the self-shielding magnet, a lower magnetic cover mounting ring 10 matching the lower magnetic cover 8 is provided in the middle of the bottom of the self-shielding magnet, a first rock wool 11 is provided on the outside of the self-shielding magnet and the rear cover 4, a second rock wool 12 is provided between the shielding inner shell and the self-shielding magnet, a third rock wool 13 is provided between the upper magnetic cover 7 and the upper magnetic cover mounting ring 9, a fourth rock wool 14 is provided between the lower magnetic cover 8 and the lower magnetic cover mounting ring 10, and a fifth rock wool 15 is provided between the self-shielding magnet and the front frame. The self-shielding magnet includes a magnet top plate 1, a magnet bottom plate 2, and two magnet side plates 3 installed between the magnet top plate 1 and the magnet bottom plate 2. A waveguide mounting hole 6 matching the magnet waveguide 5 is provided on the magnet top plate 1, the upper magnetic cover mounting ring 9 is fixed in the middle of the lower side of the magnet top plate 1, and the lower magnetic cover mounting ring 10 is fixed in the middle of the upper side of the magnet bottom plate 2. The front frame includes two door rail beams 17, an upper baffle plate 18 connected between the tops of the two door rail beams 17, and a lower baffle plate 19 connected between the bottoms of the two door rail beams 17. The door rail beams 17 and the front side of the self-shielding magnet are connected by a shielding plate 20. The shielding inner shell includes an inner shell top plate 21, an inner shell bottom plate 22, an inner shell back plate 24 connected between the inner shell top plate 21 and the inner shell bottom plate 22, and two inner shell side plates 23. The inner shell top plate 21 is provided with an upper magnetic cover hole 25 that matches the upper magnetic cover 7, and the inner shell bottom plate 22 is provided with a lower magnetic cover hole 26 that matches the lower magnetic cover 8. The upper side of the magnet bottom plate 2 is provided with a bed rail beam 27 that matches the bed body, one end of the bed rail beam 27 passes through the rear side of the magnet bottom plate 2, and the inner shell bottom plate 22 is provided with a bed rail beam hole 28 that matches the bed rail beam 27. Four support columns 29 are provided on the lower side of the magnet bottom plate 2 , and a sixth rock wool 16 is provided on the front side of the shielding plate 20 .

[0022] In the present invention, the positions of the upper and lower magnetic covers correspond to the middle position of the self-shielding magnet and are deviated from the middle position of the shielding inner shell to a certain extent. This not only ensures the magnetic field effect generated by the self-shielding magnet, but also makes the spaces on both sides not need to be symmetrical with each other, so that the space on the side that does not require a larger space can be reduced to a minimum, reducing the internal invalid space and further reducing the size of the equipment.

[0023] The present invention adopts a frame-type self-shielding magnet, and arranges a shielding inner shell inside the self-shielding magnet for double shielding. At the same time, the middle positions of the upper and lower magnetic covers and the shielding inner shell are staggered to reduce the internal invalid space. Under the premise of ensuring its installation stability, the installation space is reduced, and it is suitable for small-volume nuclear magnetic detection equipment.

Claims

1. A self-shielding magnet structure for animal self-shielding nuclear magnetic resonance imaging machine, characterized in that: It includes a self-shielding magnet, a magnet waveguide installed on the top of the self-shielding magnet, a shielding inner shell installed inside the self-shielding magnet, an upper magnetic cover installed on the top of the shielding inner shell, a lower magnetic cover installed on the bottom of the shielding inner shell, a rear cover installed on the rear side of the self-shielding magnet, and a front frame installed on the front side of the self-shielding magnet, the front side of the shielding inner shell is flush with the front side of the self-shielding magnet, the rear side of the shielding inner shell is exposed to the rear side of the self-shielding magnet, the rear cover covers the rear side of the shielding inner shell, and the front side of the rear cover is connected to the rear side of the self-shielding magnet, and the An upper magnetic cover mounting ring matching the upper magnetic cover is provided in the middle of the top of the self-shielding magnet, and a lower magnetic cover mounting ring matching the lower magnetic cover is provided in the middle of the bottom of the self-shielding magnet. A first rock wool is provided on the outer side of the self-shielding magnet and the rear cover, a second rock wool is provided between the shielding inner shell and the self-shielding magnet, a third rock wool is provided between the upper magnetic cover and the upper magnetic cover mounting ring, a fourth rock wool is provided between the lower magnetic cover and the lower magnetic cover mounting ring, and a fifth rock wool is provided between the self-shielding magnet and the front frame; the middle positions of the upper and lower magnetic covers and the shielding inner shell are staggered.

2. The self-shielding magnet structure for animal self-shielding nuclear magnetic resonance imaging machine according to claim 1, characterized in that: The self-shielding magnet includes a magnet top plate, a magnet bottom plate and two magnet side plates installed between the magnet top plate and the magnet bottom plate. The magnet top plate is provided with a waveguide tube mounting hole that matches the magnet waveguide tube. The upper magnetic cover mounting ring is fixed in the middle of the lower side of the magnet top plate, and the lower magnetic cover mounting ring is fixed in the middle of the upper side of the magnet bottom plate.

3. The self-shielding magnet structure for animal self-shielding nuclear magnetic resonance imaging machine according to claim 2, characterized in that: The front frame comprises two door rail beams, an upper baffle connected between the tops of the two door rail beams and a lower baffle connected between the bottoms of the two door rail beams. The door rail beams and the front side of the self-shielding magnet are connected via a shielding plate.

4. The self-shielding magnet structure for animal self-shielding nuclear magnetic resonance imaging machine according to claim 2, characterized in that: The shielding inner shell includes an inner shell top plate, an inner shell bottom plate, an inner shell back plate connected between the inner shell top plate and the inner shell bottom plate, and two inner shell side plates. The inner shell top plate is provided with an upper magnetic cover hole that matches the upper magnetic cover, and the inner shell bottom plate is provided with a lower magnetic cover hole that matches the lower magnetic cover.

5. The self-shielding magnet structure for animal self-shielding nuclear magnetic resonance imaging machine according to claim 4, characterized in that: A bed rail beam matching the bed body is provided on the upper side of the magnet bottom plate, one end of the bed rail beam passes through the rear side of the magnet bottom plate, and a bed rail beam hole matching the bed rail beam is provided on the inner shell bottom plate.

6. The self-shielding magnet structure for animal self-shielding nuclear magnetic resonance imaging machine according to claim 3, characterized in that: Four supporting columns are arranged on the lower side of the magnet bottom plate, and a sixth rock wool is arranged on the front side of the shielding plate.

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