Superconducting joint fixing device for superconducting magnet

Abstract

The utility model relates to the technical field of superconducting magnets, in particular to a superconducting joint fixing device for a superconducting magnet, which comprises a wiring plate, a cover plate and a junction box, the cover plate and the junction box are fixedly mounted on the wiring plate, a superconducting joint is fixed in the junction box, and a superconducting wire is connected onto the superconducting joint; the superconducting wire extends to the outside of the junction box, and a wiring channel is arranged between the wiring plate and the cover plate. And the superconducting wire positioned outside the junction box is fixedly arranged in the wiring groove. According to the superconducting joint fixing device for the superconducting magnet, the superconducting joint and the superconducting wire at the wiring position inside the superconducting magnet can be fixed, the superconducting wire is prevented from loosening, the problem that the superconducting magnet is unstable due to loosening of the superconducting wire is solved, and the superconducting joint fixing device for the superconducting magnet has the advantages of being simple in structure, good in reliability, high in practicability and the like. And the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of superconducting magnet technology, and in particular to a superconducting joint fixing device for superconducting magnets. Background Technology

[0002] Superconducting wires are wires made of superconducting materials that can achieve zero resistance under specific conditions. Superconducting magnets typically consist of several superconducting coils connected in series. During the manufacture of superconducting magnets, segmented winding is performed; that is, several individual coils are first manufactured, and then these coils are electrically connected together in a designed sequence; these connecting parts are usually called superconducting joints. Superconducting joints are used to connect the superconducting coils inside the superconducting magnet, and are typically structural devices that connect the input wire of one superconducting coil to the output wire of another superconducting coil.

[0003] Wiring is a crucial step in the fabrication of superconducting magnets, and the securing of the superconducting wires and connectors at the wiring points plays a vital role in this process. In existing technologies, the superconducting wires at the wiring points are secured by distributing them on a wiring board and fixing them with cable ties. This method suffers from drawbacks such as insecure securing and the risk of loosening.

[0004] During the wiring process of a superconducting magnet, the superconducting wire and superconducting connector are secured using cable ties, which is unreliable and can have the following effects: ① During the excitation process of the superconducting magnet, as the current in the superconducting coil increases, the magnetic field strengthens, and the force on the superconducting wire also increases. This can cause the superconducting wire to shift and loosen due to the change in magnetic force, leading to instability of the superconducting magnet and potentially causing it to lose its quench. ② During normal operation of the superconducting magnet, especially when it is in a vibrating environment, the superconducting wire may shift or loosen, further increasing the risk of instability and quench loss.

[0005] Therefore, designing a superconducting joint fixing device for superconducting magnets has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The technical problem this utility model aims to solve is to provide a superconducting connector fixing device for superconducting magnets, which can fix the superconducting connector and superconducting wire at the internal wiring point of the superconducting magnet, prevent the superconducting wire from loosening, and solve the problem of instability of the superconducting magnet caused by the loosening of the superconducting wire. It has the advantages of simple structure, high reliability and convenient use.

[0007] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0008] A superconducting connector fixing device for a superconducting magnet includes a wiring board, a cover plate and a junction box fixedly mounted on the wiring board, a superconducting connector fixed inside the junction box, and a superconducting wire connected to the superconducting connector; the superconducting wire extends to the outside of the junction box, and a wiring groove is provided between the wiring board and the cover plate; the superconducting wire located outside the junction box is fixedly installed in the wiring groove.

[0009] As an improvement, a Wood's alloy is provided between the junction box and the superconducting connector, and the superconducting connector is fixed in the junction box by the Wood's alloy.

[0010] As an improvement, the wiring board has a recessed groove that matches the dimensions of the junction box, and the recessed groove is connected to the wiring trough; the junction box is fixedly mounted on the recessed groove; the junction box is located on the side of one end of the wiring trough; the junction box has a clearance hole corresponding to the position of the wiring trough to allow superconducting wires to pass through. The bottom surface of the recessed groove is lower than the bottom surface of the wiring trough, and the bottom surface of the junction box is not higher than the bottom surface of the wiring trough.

[0011] As an improvement, the junction box is an open-top box, and the bottom of the junction box is fixedly installed in the groove of the wiring board by fasteners.

[0012] As an improvement, the wiring trough includes an upper trough body and a lower trough body that are fastened together, with the upper trough body disposed on a cover plate and the lower trough body disposed on a wiring board.

[0013] As an improvement, the wiring board and the cover plate are detachably fixedly connected by fasteners, and mounting holes are provided on both the wiring board and the cover plate at the positions corresponding to the fasteners.

[0014] As an improvement, the cover plate is provided with a liquid helium flow channel that communicates with the upper tank.

[0015] As an improvement, the wiring board is provided with a plurality of spaced ventilation holes that extend through the wiring board from top to bottom.

[0016] The present invention adopts the above technical solution and has the following advantages compared with the prior art:

[0017] 1. By placing the superconducting wire at the superconducting connector inside the cable tray, the superconducting wire is more securely fixed, effectively preventing it from loosening.

[0018] 2. Ventilation holes are provided on the wiring board. When the device is in use, the ventilation holes can disperse helium bubbles. The ventilation holes can discharge helium bubbles near the superconducting wire, so that helium bubbles will not adhere to the superconducting wire and effectively prevent the risk of superconducting magnet quenching caused by local temperature rise in this area.

[0019] 3. A recessed groove is installed at the location of the junction box on the wiring board. The structure of the recessed groove is designed so that the bottom of the groove is lower than the bottom of the wiring trough, and the bottom of the junction box is not higher than the bottom of the wiring trough. This ensures that the superconducting wire can enter the junction box horizontally when it enters from the wiring trough, and the superconducting wire will not be bent, thus avoiding damage to the superconducting wire.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a superconducting joint fixing device for superconducting magnets according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a superconducting joint fixing device for a superconducting magnet according to the present invention;

[0023] Figure 3 for Figure 2 Top view;

[0024] Figure 4 for Figure 3 AA section view in the middle;

[0025] Figure 5 for Figure 1 Schematic diagram of the wiring board structure;

[0026] Figure 6 for Figure 1 Schematic diagram of the middle cover plate;

[0027] Among them: 1-wiring board, 2-cover plate, 3-junction box, 4-wiring trough, 5-superconducting connector, 6-superconducting wire, 7-Wood alloy, 8-upper tank body, 9-lower tank body, 10-liquid helium flow channel, 11-vent hole, 12-sinking tank. Detailed Implementation

[0028] like Figures 1 to 6 As shown, a superconducting connector fixing device for a superconducting magnet includes a wiring board 1, a cover plate 2 and a junction box 3 fixedly mounted on the wiring board 1. A superconducting connector 5 is fixed inside the junction box 3, and two superconducting wires 6 are connected to the superconducting connector 5. A Wood's alloy 7 is provided between the junction box 3 and the superconducting connector 5, and the superconducting connector 5 is fixed inside the junction box 3 by the Wood's alloy 7. The superconducting wires 6 extend to the outside of the junction box 3, and a wiring groove 4 is provided between the wiring board 1 and the cover plate 2; the superconducting wires 6 located outside the junction box 3 are fixedly installed in the wiring groove 4.

[0029] like Figures 1 to 6As shown, the wiring board 1 has a recessed groove 12 that matches the external dimensions of the junction box 3, and the recessed groove 12 is connected to the cable tray 4; the junction box 3 is fixedly installed on the recessed groove 12; the junction box 3 is located on the side of one end of the cable tray 4; the junction box 3 has a clearance hole corresponding to the position of the cable tray 4 to allow the superconducting wire 6 to pass through. The junction box 3 is a box with an open top. In this embodiment, preferably, the junction box 3 is cylindrical. The bottom of the junction box 3 is fixedly installed in the recessed groove 12 of the wiring board 1 by fasteners. The recessed groove 12 facilitates the fixing of the junction box 3 and makes the fixing more secure.

[0030] like Figures 1 to 6 As shown, the cable tray 4 includes an upper tray 8 and a lower tray 9 that are fastened together. The upper tray 8 is mounted on the cover plate 2, and the lower tray 9 is mounted on the wiring board 1. The structural design of the cable tray 4 makes it easy to install and securely fix the superconducting wire 6, preventing it from loosening. The wiring board 1 and the cover plate 2 are detachably fixedly connected by fasteners, and mounting holes are provided on both the wiring board 1 and the cover plate 2 at the positions corresponding to the fasteners. The wiring board 1 and the cover plate 2 are detachably fixedly connected by mounting holes and fasteners. In this embodiment, the fasteners are preferably bolt and nut assemblies. The bottom surface of the recessed groove 12 is lower than the bottom surface of the lower tray 9. The depth of the recessed groove 12 should ensure that the clearance hole on the junction box 3 is at the same height as the cable tray 4, so as to ensure that the superconducting wire 6 can enter the junction box 3 horizontally without bending when entering from the cable tray 4, thus avoiding damage to the superconducting wire 6.

[0031] like Figures 1 to 6 As shown in the preferred embodiment, the cover plate 2 is provided with a liquid helium flow channel 10 connected to the upper tank 8; the wiring board 1 is provided with multiple spaced vent holes 11, which penetrate the wiring board 1 vertically. When the device is in use, the liquid helium flow channel 10 facilitates the flow of liquid helium, improves the heat dissipation effect at that location, and helps to improve the temperature stability at that location, reducing the risk of quenching of the superconducting magnet. When the path of the superconducting wire 5 to be arranged is long, i.e., the length of the wiring channel 4 is long, the cover plate 2 can be assembled from multiple pieces according to actual needs. When the device is in use, the vent holes 11 have the function of dispersing helium bubbles. The vent holes 11 can discharge helium bubbles near the superconducting wire 6, preventing helium bubbles from adhering to the superconducting wire 6.

[0032] In this preferred embodiment, both the wiring board 1 and the cover plate 2 are made of epoxy board (FR-4); the junction box 3 is made of brass. Epoxy board (FR-4) has good insulation properties, as well as good low-temperature resistance and mechanical strength. The width of the cable tray 4 is exactly equal to the sum of the widths of the two superconducting wires 6 to be placed, and the depth of the cable tray 4 is adapted to the thickness of the superconducting wires 6. In this superconducting connector fixing device, the traditional cable tie fixing method is replaced by fixing the cable tray 4 with a detachable cover plate 2 and a cable tray 4 on the wiring board 1, thus fixing the superconducting wires 6 in the cable tray 4.

[0033] When using this superconducting connector fixing device for superconducting magnets: First, align the two superconducting wires 6 to be connected according to... Figures 1 to 6 As shown, the two superconducting wires 6 are fixed to the wiring board 1, with the junction box 3 passing through it. The junction box 3 is fixed to the wiring board 1. Then, the ends of the two superconducting wires 6 are led out to the outside of the junction box 3 to create a superconducting connector 5, connecting the two superconducting wires. Creating a superconducting connector is a relatively mature method for connecting superconducting wires in the prior art. All existing methods for creating superconducting connectors can be used in this application, and how to create a superconducting connector is not the technical problem to be solved in this application. Therefore, the method for creating a superconducting connector will not be described in detail here. Finally, the created superconducting connector and the two superconducting wires connected to it are placed inside the junction box 3; liquid Wood's alloy is poured into the junction box 3, and after the Wood's alloy solidifies, the superconducting connector 5 and the two superconducting wires connected to it are fixed together inside the junction box 3.

[0034] In summary, this utility model provides a superconducting connector fixing device for superconducting magnets. This fixing device can fix the superconducting connector and superconducting wire at the internal wiring point of the superconducting magnet, preventing the superconducting wire from loosening. It solves the problem of instability of the superconducting magnet caused by the loosening of the superconducting wire and has the advantages of simple structure, high reliability and convenient use.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A superconducting joint fixture for a superconducting magnet comprising a wiring board (1), characterized in that: It also includes a cover plate (2) and a junction box (3) fixedly installed on the wiring board (1), with a superconducting connector (5) fixed inside the junction box (3) and a superconducting wire (6) connected to the superconducting connector (5). The superconducting wire (6) extends to the outside of the junction box (3), and a wiring groove (4) is provided between the wiring board (1) and the cover plate (2); the superconducting wire (6) located outside the junction box (3) is fixedly installed in the wiring groove (4).

2. The superconducting joint fixture for a superconducting magnet of claim 1, wherein: Wood's alloy (7) is provided between the junction box (3) and the superconducting connector (5), and the superconducting connector (5) is fixed in the junction box (3) by the Wood's alloy (7).

3. The superconducting joint fixture for a superconducting magnet of claim 2, wherein: The wiring board (1) is provided with a recess (12) that matches the external dimensions of the junction box (3), and the recess (12) is connected to the wiring trough (4); the junction box (3) is fixedly installed on the recess (12); the junction box (3) is located on the side of one end of the wiring trough (4); the junction box (3) is provided with a clearance hole that allows the superconducting wire (6) to pass through at the position corresponding to the wiring trough (4).

4. The superconducting joint fixture for a superconducting magnet of claim 3, wherein: The junction box (3) is a box with an open top, and the bottom of the junction box (3) is fixedly installed in the groove (12) of the wiring board (1) by fasteners.

5. The superconducting joint fixture for a superconducting magnet of claim 1, wherein: The wiring trough (4) includes an upper trough body (8) and a lower trough body (9) that are fastened together. The upper trough body (8) is set on the cover plate (2), and the lower trough body (9) is set on the wiring board (1).

6. The superconducting joint fixing device for a superconducting magnet as described in any one of claims 1 to 5, characterized in that: The wiring board (1) and the cover plate (2) are detachably fixedly connected by fasteners, and mounting holes are provided on the wiring board (1) and the cover plate (2) at the positions corresponding to the fasteners.

7. The superconducting joint fixture for a superconducting magnet of any of claims 1 to 5, wherein: The cover plate (2) is provided with a liquid helium flow channel (10) that is connected to the upper tank (8).

8. The superconducting joint fixture for a superconducting magnet of any one of claims 1 to 5, wherein: The wiring board (1) is provided with a plurality of spaced ventilation holes (11), which penetrate the wiring board (1) vertically.

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