Superconducting magnet assembly

Abstract

The utility model relates to the technical field of superconducting magnets, and discloses a superconducting magnet assembly, the lower end of an inner cylinder is fixedly connected with a first sealing flange ring, and a lower end cover is detachably connected to the first sealing flange ring and the lower end of an outer cylinder; one end of the upper end cover is detachably connected to the upper end of the outer cylinder, and the other end is attached to the outer wall of the inner cylinder; the room temperature holes comprise a first hole and a second hole which are formed in the inner cylinder and the outer cylinder respectively, the first hole and the second hole are the same in width, the second hole is longer than the first hole, the first hole and the second hole are welded and fixed through a pair of room temperature hole plates and a pair of strip plates, and the room temperature holes of the cavity are formed. According to the superconducting magnet assembly, the interior of the superconducting magnet assembly can be repaired after the sealing structures at the two ends are detached, the superconducting magnet assembly can be rapidly detached to deal with abnormities, the working efficiency is greatly improved, and environmental pollution is avoided. The utility model has the advantages of reasonable structure, good assembling and fixing manufacturability and high structural stability.

Description

Technical Field

[0001] The utility model relates to the technical field of superconducting magnets, in particular to a superconducting magnet assembly. Background Art

[0002] Since its birth in the 1970s, magnetic resonance imaging (MRI) technology has been widely used in medical testing, non-destructive testing and other fields. Low-temperature superconducting MRI systems mainly use liquid helium for refrigeration. The low-temperature superconducting magnets inside them often weigh several tons and have a very large heat capacity. Cooling to superconducting temperature requires a large amount of cooling (from room temperature to liquid helium temperature 4.2K, about 100kJ of cooling is required per kilogram of magnet). With the rapid rise in helium prices, low liquid helium, even less liquid helium or no liquid helium has become an important research direction in the field of MRI technology.

[0003] One of the keys to the technology of low-liquid helium and no-liquid helium is the reliable and stable conduction connection between the workpieces at low temperatures. Inevitably, various anomalies exist inside the superconducting magnet during the production stage, which requires us to quickly disassemble and deal with these anomalies. At present, there are three types of superconducting magnet components on the market. The first type is a welded structure. Each repair requires a lot of manpower to cut the end caps at both ends, remove the end caps and inner tube, and repair the inside, which is time-consuming and labor-intensive, and the cutting metal dust pollutes the environment and harms human health; the second type is a structure with sealing at both ends, but because there is no radial room temperature hole, the sealing structure can only be removed, the end caps and inner tube are removed as a whole, and the inside is repaired; the third type is a sealing structure with radial room temperature holes at both ends. Therefore, after removing the sealing structures at both ends, the end caps cannot be removed, and the inside cannot be repaired.

[0004] Therefore, there is an urgent need to improve the existing superconducting magnet assembly structure. Utility Model Content

[0005] In order to solve the deficiencies in the above-mentioned prior art, the utility model provides a superconducting magnet assembly. After removing the sealing structures at both ends, the interior can be repaired. It can be quickly disassembled to handle abnormalities, which greatly improves work efficiency and avoids environmental pollution.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A superconducting magnet assembly comprises an inner cylinder and an outer cylinder, wherein a first sealing flange ring is fixedly connected to the lower end of the inner cylinder, and a lower end cover is detachably connected to the first sealing flange ring and the lower end of the outer cylinder; and an upper end cover is also included, wherein one end of the upper end cover is detachably connected to the upper end of the outer cylinder, and the other end is in contact with the outer wall of the inner cylinder.

[0008] The upper end cover and the inner tube are fitted with a sloped surface, and a first seal is filled between the sloped surface and the outer wall of the inner tube; it also includes a second sealing flange ring, which is pressed onto the upper end surface of the inner tube, the first seal and the upper end cover.

[0009] The upper end cover is provided with a first step portion for placing the second sealing flange ring.

[0010] An upper steel ring is provided on the upper end surface of the outer cylinder, and the inner wall of the upper steel ring is flush with the inner wall of the outer cylinder;

[0011] The upper steel ring is provided with a first sealing groove, the first sealing groove is filled with a second sealing member, and the upper end cover is pressed onto the second sealing member.

[0012] The upper end cover is mechanically connected to the upper steel ring and the second sealing flange ring through threads.

[0013] The lower end cover is provided with a second step portion; the lower end surface of the outer cylinder is provided with a lower steel ring, the inner wall of the lower steel ring is flush with the inner wall of the outer cylinder, and the lower end cover is pressed onto the lower steel ring and the first sealing flange ring respectively.

[0014] The lower end cover and the first sealing flange ring are both provided with a second sealing groove, and the second sealing groove is filled with a second sealing member; the second sealing groove is a square groove.

[0015] The lower end cover is detachably connected to the lower steel ring and the first sealing flange ring respectively by threaded connection.

[0016] The first sealing groove is a square groove.

[0017] The superconducting magnet assembly also includes a room temperature hole, which includes a first hole and a second hole respectively opened in the inner cylinder and the outer cylinder. The first hole and the second hole have the same width and the second hole is longer than the first hole. The first hole and the second hole are welded and fixed by a pair of room temperature orifice plates and a pair of long strips to form a room temperature hole of the chamber.

[0018] The beneficial effects of the utility model are:

[0019] The utility model provides a superconducting magnet component. Removable sealing covers are respectively arranged at the upper and lower ends of the superconducting component consisting of an inner and outer cylinder. When the interior is repaired, the sealing covers at the upper and lower ends can be removed to inspect the interior of the superconducting magnet component and handle abnormal situations, which greatly improves work efficiency and further avoids environmental pollution.

[0020] The utility model has reasonable structure, good assembly and fixing processability and high structural stability.

[0021] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A three-dimensional diagram of a superconducting magnet assembly provided in an embodiment of the present application.

[0024] Figure 2 A three-dimensional diagram of a superconducting magnet assembly provided in an embodiment of the present application after removing the upper and lower end covers.

[0025] Figure 3 A front view of a superconducting magnet assembly provided in an embodiment of the present application.

[0026] Figure 4 Provided in the embodiments of this application Figure 3 A partial enlarged view of .

[0027] Figure 5 Provided in the embodiments of this application Figure 3 Section view along AA. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] Currently, most superconducting magnet outer cylinder assemblies on the market are non-detachable and need to be cut to be disassembled, or have partially detachable structures that cannot be completely disassembled, and cannot achieve rapid processing of the interior of the superconducting magnet, which is time-consuming and labor-intensive. Especially for superconducting magnets with radial room temperature holes, a method for rapid disassembly is particularly important.

[0033] The utility model embodiment provides a superconducting magnet assembly that can be quickly disassembled, referring to Figure 1-5 shown.

[0034] like Figure 1 Shown is a stereoscopic view of a superconducting magnet assembly provided in an embodiment of the present application.

[0035] like Figure 2 Shown is a three-dimensional view of a superconducting magnet assembly provided in an embodiment of the present application with the upper and lower end covers removed.

[0036] like Figure 3 Shown is a front view of a superconducting magnet assembly provided in an embodiment of the present application.

[0037] like Figure 4 The embodiment of the present application is shown in Figure 3 A partial enlarged view of .

[0038] Figure 5 The embodiment of the present application is shown in Figure 3 Section view along AA.

[0039] like Figure 1-5As shown, a superconducting magnet assembly includes an inner tube 1 and an outer tube 2, wherein the lower end of the inner tube 1 is fixedly connected to a first sealing flange ring 12, and a lower end cover 22 is detachably connected to the first sealing flange ring 12 and the lower end of the outer tube 2; an upper end cover 21, wherein one end of the upper end cover 21 is detachably connected to the upper end of the outer tube 2, and the other end is in contact with the outer wall of the inner tube 1.

[0040] An upper steel ring 23 is provided on the upper end surface of the outer cylinder 2, and the inner wall of the upper steel ring 23 is flush with the inner wall of the outer cylinder 2;

[0041] The upper steel ring 23 is provided with a first sealing groove 231 , which is a square groove. The first sealing groove 231 is filled with a second sealing member, and the upper end cover 21 is pressed onto the second sealing member.

[0042] The upper end cover 21 is mechanically connected to the upper steel ring 23 and the second sealing flange ring 11 through threads.

[0043] A second step portion is provided on the lower end cover 22; a lower steel ring 24 is provided on the lower end surface of the outer cylinder 2, the inner wall of the lower steel ring 24 is flush with the inner wall of the outer cylinder 2, and the lower end cover 22 is pressed onto the lower steel ring 24 and the first sealing flange ring 12 respectively.

[0044] The lower end cover 22 and the first sealing flange ring 12 are both provided with a second sealing groove 121 . The second sealing groove 121 is a square groove and is filled with a second sealing member.

[0045] The lower end cover 22 is detachably connected to the lower steel ring 24 and the first sealing flange ring 12 respectively by threaded connection.

[0046] The room temperature hole 3 includes a first hole and a second hole respectively opened in the inner tube and the outer tube. The first hole and the second hole have the same width and the second hole is longer than the first hole. The first hole and the second hole are welded and fixed by a pair of room temperature orifice plates and a pair of long strips to form a room temperature hole of the chamber.

[0047] As a preferred embodiment of the utility model, the room temperature orifice plate in this embodiment can be a fan-shaped plate, or a room temperature orifice plate in other shapes such as a rectangular plate or a circular plate.

[0048] like Figure 4 As shown, the upper end cover 21 is provided with a first step portion for placing the second sealing flange ring 11, and a slope surface is provided at the position where the upper end cover 21 and the inner tube 1 are fitted, and a first sealing member 111 is filled between the slope surface and the outer wall of the inner tube 1; the second sealing flange ring 11 is also included, and the second sealing flange ring 11 is pressed onto the upper end surface of the inner tube 1, the first sealing member 111 and the upper end cover 21.

[0049] The processing and assembly steps of the superconducting magnet assembly structure of the utility model are:

[0050] Step S1: First, finish machining each component according to the drawing, including: inner cylinder 1, outer cylinder 2, first sealing flange ring 12, second sealing flange ring 11, upper end cover 21, lower end cover 22, upper steel ring 23, lower steel ring 24, room temperature orifice plate and long strip plate;

[0051] Step S2: welding the inner tube 1 to the first sealing flange ring 12;

[0052] Step S3: the assembly after the inner tube 1 and the first sealing flange ring 12 are welded is sealed and assembled on the lower end cover 22;

[0053] Step S4: The lower end cover 22 is assembled on one end of the outer tube 2 by means of screws, buckles or thread seals;

[0054] Step S5: The upper end cover 21 is assembled on the other end of the outer tube 2 by means of screws, buckles or thread seals;

[0055] Step S6: using the second sealing flange ring 11 to seal the gap between the upper end cover 21 and the inner tube 1;

[0056] Step S7: Two room temperature orifice plates of the same size and a pair of long strips are welded and fixed to form the room temperature orifice 3 of the chamber, thereby forming the entire sealed cavity, and having the characteristics of being able to be quickly disassembled and handle matters inside the superconducting magnet.

[0057] The utility model relates to the technical field of superconducting magnets, and discloses a superconducting magnet assembly, wherein a first sealing flange ring is fixedly connected to the lower end of an inner cylinder, and a lower end cover is detachably connected to the first sealing flange ring and the lower end of an outer cylinder; one end of an upper end cover is detachably connected to the upper end of an outer cylinder, and the other end is fitted with the outer wall of the inner cylinder; a room temperature hole comprises a first hole and a second hole respectively opened in the inner cylinder and the outer cylinder, the first hole and the second hole have the same width and the second hole is longer than the first hole, and the first hole and the second hole are fixed by welding through a pair of room temperature orifice plates and a pair of long strips to form a room temperature hole of a chamber. The utility model provides a superconducting magnet assembly, and after removing the sealing structures at both ends, the interior can be repaired, and the abnormality can be quickly disassembled to handle, which greatly improves the work efficiency and avoids environmental pollution.

[0058] The utility model has reasonable structure, good assembly and fixing processability and high structural stability.

[0059] Although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0060] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A superconducting magnet assembly, comprising an inner cylinder (1) and an outer cylinder (2), characterized in that: The lower end of the inner cylinder (1) is fixedly connected to a first sealing flange ring (12), and a lower end cover (22) is detachably connected to the first sealing flange ring (12) and the lower end of the outer cylinder (2); and an upper end cover (21) is also included, one end of which is detachably connected to the upper end of the outer cylinder (2), and the other end is in contact with the outer wall of the inner cylinder (1).

2. A superconducting magnet assembly according to claim 1, characterized in that: The upper end cover (21) is provided with a sloped surface at the position where it fits with the inner tube (1), and a first sealing member (111) is filled between the sloped surface and the outer wall of the inner tube (1); and the upper end cover (21) further comprises a second sealing flange ring (11), and the second sealing flange ring (11) is pressed onto the upper end surface of the inner tube (1), the first sealing member (111) and the upper end cover (21).

3. A superconducting magnet assembly according to claim 2, characterized in that: The upper end cover (21) is provided with a first step portion for placing the second sealing flange ring (11).

4. A superconducting magnet assembly according to claim 3, characterized in that: An upper steel ring (23) is provided on the upper end surface of the outer cylinder (2), and the inner wall of the upper steel ring (23) is flush with the inner wall of the outer cylinder (2); The upper steel ring (23) is provided with a first sealing groove (231), the first sealing groove (231) is filled with a second sealing member, and the upper end cover (21) is pressed onto the second sealing member.

5. A superconducting magnet assembly according to claim 4, characterized in that: The upper end cover (21) is mechanically connected to the upper steel ring (23) and the second sealing flange ring (11) through threads.

6. A superconducting magnet assembly according to claim 1, characterized in that: The lower end cover (22) is provided with a second step portion; the lower end surface of the outer cylinder (2) is provided with a lower steel ring (24), the inner wall of the lower steel ring (24) is flush with the inner wall of the outer cylinder (2), and the lower end cover (22) is pressed onto the lower steel ring (24) and the first sealing flange ring (12) respectively.

7. A superconducting magnet assembly according to claim 6, characterized in that: The lower end cover (22) and the first sealing flange ring (12) are both provided with a second sealing groove (121), and a second sealing member is filled in the second sealing groove (121); the second sealing groove (121) is a square groove.

8. A superconducting magnet assembly according to claim 6, characterized in that: The lower end cover (22) is detachably connected to the lower steel ring (24) and the first sealing flange ring (12) respectively by means of threaded connection.

9. A superconducting magnet assembly according to claim 4, characterized in that: The first sealing groove (231) is a square groove.

10. The superconducting magnet assembly according to claim 1, characterized in that: The superconducting magnet assembly also includes a room temperature hole (3), which includes a first hole and a second hole respectively opened in the inner tube and the outer tube, the first hole and the second hole have the same width and the second hole is longer than the first hole, and the first hole and the second hole are welded and fixed by a pair of room temperature orifice plates and a pair of long strip plates to form a room temperature hole of the chamber.

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