A reusable vacuum pressure impregnation tooling for superconducting magnets

Abstract

The present invention discloses a reusable superconducting magnet vacuum pressure impregnation tooling, which includes an upper flange, short bolts, a plurality of annular sleeves, a lower flange, long bolts, a skeleton and a magnet coil. The plurality of annular sleeves are spliced with each other. The skeleton is movably arranged inside the magnet coil, and the magnet coil is movably arranged inside the plurality of annular sleeves. The top and bottom of the skeleton are respectively connected to the upper flange and the lower flange. The upper flange and the lower flange are respectively threadedly connected to the corresponding annular sleeves through short bolts. Two adjacent annular sleeves in the middle are connected through long bolts. The present invention can be recycled to perform vacuum pressure impregnation on magnets within a limited size range, without machining impregnation tooling for each magnet, which can greatly reduce the processing time, lower the economic cost, and improve the development efficiency of superconducting magnets.

Description

Technical Field

[0001] The present invention relates to a tooling, and particularly to a reusable vacuum pressure impregnation tooling for superconducting magnets, belonging to the technical field of tooling. Background Art

[0002] Utilizing the zero-resistance effect of superconducting wire at low temperatures, superconducting magnets can be fabricated and widely applied in industries such as energy, information, transportation, and military. The closely wound superconducting magnet is an important application direction in superconducting magnet engineering, which can generate a target magnetic field within an effective region and be applied to physical property testing, material separation, nuclear magnetic resonance imaging, and large scientific devices such as accelerators.

[0003] The wound superconducting magnet must undergo vacuum pressure impregnation. Epoxy resin suitable for low-temperature environments is injected into the superconducting magnet to fill the gaps in the superconducting magnet coil and cure it, thereby ensuring the stability of the superconducting coil under the action of electromagnetic force during the operation of the superconducting magnet. At the same time, it provides electrical insulation between the superconducting wire layers and turns, guaranteeing the stable and reliable operation of the superconducting magnet at low temperatures.

[0004] The vacuum pressure impregnation of superconducting magnets requires the use of impregnation tooling. The superconducting magnet is placed in the tooling, the air is evacuated to maintain a certain vacuum degree, epoxy resin glue is injected into the tooling, heat preservation and curing are carried out, and finally the superconducting magnet is taken out.

[0005] Currently, the superconducting magnet impregnation tooling in use usually connects the upper and lower flanges and the sleeve of the tooling together by welding. After impregnation, the impregnation tooling needs to be destructively removed to take out the magnet coil. The traditional impregnation tooling cannot be reused. For superconducting magnets of different sizes and specifications, different types of impregnation tooling need to be designed and processed, which is both time-consuming and laborious, greatly increasing the research and development cost of superconducting magnets.

[0006] Therefore, this design proposes a reusable vacuum pressure impregnation tooling for superconducting magnets. For the impregnation of superconducting magnets of different sizes and specifications, only the number of annular sleeves and the size of the filler need to be changed, which not only saves time costs but also reduces the economic cost of superconducting magnet research and development, providing great convenience for the research and development of superconducting magnets. Summary of the Invention

[0007] The purpose of the present invention is to provide a reusable vacuum pressure impregnation tooling for superconducting magnets to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solutions: A reusable superconducting magnet vacuum pressure impregnation tooling, including an upper flange, short bolts, a plurality of annular sleeves, a lower flange, long bolts, a skeleton, and a magnet coil. The plurality of annular sleeves are spliced with each other. The skeleton is movably arranged inside the magnet coil. The magnet coil is movably arranged inside the plurality of annular sleeves. The top and bottom of the skeleton are respectively connected to the upper flange and the lower flange. The upper flange and the lower flange are respectively threadedly connected to the corresponding annular sleeves through short bolts. Two adjacent annular sleeves in the middle are connected by long bolts.

[0009] As a preferred technical solution of the present invention, nylon fillers are movably arranged on the inner part of the skeleton and the outer surface of the magnet coil.

[0010] As a preferred technical solution of the present invention, an O-ring seal is movably connected between two adjacent annular sleeves.

[0011] As a preferred technical solution of the present invention, an air extraction hole is opened in the middle of the top end of the upper flange, and a glue injection hole is fixedly arranged at the bottom end of the lower flange.

[0012] As a preferred technical solution of the present invention, the outer diameter of the upper flange, the outer diameters of the plurality of annular sleeves, and the outer diameter of the lower flange are equal.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. For the reusable superconducting magnet vacuum pressure impregnation tooling of the present invention, through the provided upper flange, annular sleeves, lower flange, long bolts, skeleton, magnet coil, and nylon fillers, it can be recycled to perform vacuum pressure impregnation on magnets within a limited size range. There is no need to process impregnation tooling for each magnet, which can greatly reduce the processing time, lower the economic cost, and improve the development efficiency of superconducting magnets. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional structural schematic diagram of the present invention;

[0016] Figure 2 is a three-dimensional structural schematic diagram of the present invention.

[0017] In the figure: 1, air extraction hole; 2, upper flange; 3, short bolt; 4, annular sleeve; 5, lower flange; 6, glue injection hole; 7, long bolt; 8, O-ring seal; 9, skeleton; 10, magnet coil; 11, nylon filler. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figure 1-2 , the present invention provides a technical solution for a reusable superconducting magnet vacuum pressure impregnation tooling:

[0020] According to Figure 1-2 as shown, it includes an upper flange 2, short bolts 3, a plurality of annular sleeves 4, a lower flange 5, long bolts 7, a skeleton 9 and a magnet coil 10. The plurality of annular sleeves 4 are spliced with each other. The skeleton 9 is movably arranged inside the magnet coil 10, and the magnet coil 10 is movably arranged inside the plurality of annular sleeves 4. The top and bottom of the skeleton 9 are respectively connected to the upper flange 2 and the lower flange 5. The upper flange 2 and the lower flange 5 are respectively threadedly connected to the corresponding annular sleeves 4 through short bolts 3. Two adjacent annular sleeves 4 in the middle are connected by long bolts 7.

[0021] According to Figure 1 and Figure 2 as shown, nylon fillers 11 are movably arranged inside the skeleton 9 and on the outer surface of the magnet coil 10, which can be used to fill unnecessary impregnation areas inside the superconducting magnet and at the same time provide reliable support between the superconducting magnet and the impregnation tooling. An O-ring seal 8 is movably connected between two adjacent annular sleeves 4 to improve the sealing performance. An air extraction hole 1 is opened in the middle of the top end of the upper flange 2, and a glue injection hole 6 is fixedly arranged at the bottom end of the lower flange 5. The outer diameters of the upper flange 2, the plurality of annular sleeves 4 and the lower flange 5 are equal, which provides great convenience for the form of winding a heating tape for heat preservation and curing.

[0022] During specific use, for a reusable superconducting magnet vacuum pressure impregnation tooling of the present invention, a degumming agent needs to be applied before using the tooling to prevent the adhesion of the impregnating glue during disassembly and assembly. Specifically, a release agent is applied to the inner walls of the upper flange 2, the lower flange 5, the annular sleeve 4, and the magnet coil 10. First, place the lower flange 5; place the magnet coil 10 and the skeleton 9 in the inner diameter of the lower flange 2; the nylon filler 11 can not only provide mechanical support for the superconducting magnet but also reduce unnecessary waste of the impregnating glue. Place it on the lower flange 5. Stack multiple annular sleeves 4 on the lower flange 5, and stack the annular sleeve 4 on it. Fix it with an O-ring 8 and a long bolt 7. Particularly, the number of annular sleeves is matched according to the height of the magnet. The higher the magnet, the more annular sleeves 4; for the impregnation of superconducting magnets with different diameters, the size of the nylon filler 11 can be changed for corresponding filling and fixing; place the upper flange 2 on the matched annular sleeve 4 and fix it with a short bolt 3, then the mechanical installation of the entire superconducting magnet impregnation tooling is completed. After the impregnation tooling is installed, a heating tape is wound around the outer wall. Particularly, since the outer diameters of the upper flange 2, the lower flange, and the annular sleeve 4 are the same, it is convenient to wind the heating tape. After the tooling impregnation is completed, it can be disassembled without damage: sequentially remove the fixed short bolts 3 and long bolts 7 from the upper flange 2 to the annular sleeve 4, and clean the disassembled impregnation tooling with a degumming agent for reuse next time.

[0023] In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reusable superconducting magnet vacuum pressure impregnation tooling, comprising an upper flange (2), short bolts (3), a plurality of annular sleeves (4), a lower flange (5), long bolts (7), a skeleton (9) and a magnet coil (10), characterized in that, A plurality of the annular sleeves (4) are spliced with each other. The skeleton (9) is movably arranged inside the magnet coil (10). The magnet coil (10) is movably arranged inside the plurality of annular sleeves (4). The top and bottom of the skeleton (9) are respectively connected to the upper flange (2) and the lower flange (5). The upper flange (2) and the lower flange (5) are respectively threadedly connected to the corresponding annular sleeves (4) through short bolts (3). Two adjacent annular sleeves (4) located in the middle are connected by a long bolt (7). Nylon fillers (11) are movably arranged on the inner part of the skeleton (9) and the outer surface of the magnet coil (10).

2. The reusable superconducting magnet vacuum pressure impregnation tooling according to claim 1, characterized in that: An O-ring seal (8) is movably connected between two adjacent annular sleeves (4).

3. A reusable superconducting magnet vacuum pressure impregnation tooling according to claim 1, characterized in that: An air extraction hole (1) is formed in the middle of the top end of the upper flange (2), and a glue injection hole (6) is fixedly arranged at the bottom end of the lower flange (5).

4. A reusable superconducting magnet vacuum pressure impregnation tooling according to claim 1, characterized in that: The outer diameter of the upper flange (2), the outer diameters of the plurality of annular sleeves (4), and the outer diameter of the lower flange (5) are equal.

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