Lightweight vector superconducting magnet structure

Abstract

The utility model discloses a kind of lightweight vector superconducting magnet structures, it includes the Z-axis skeleton and XY skeleton inner tube of constituting superconducting magnet structure lightweight support, the outer surface of Z-axis skeleton and XY skeleton inner tube is provided with magnetic field formation mechanism, the magnetic field formation mechanism includes three-dimensional vector coil.By setting with fixed frame as benchmark, three-dimensional vector coil is installed together, so that fixed frame provides a solid foundation, reduces the vibration and displacement of three-dimensional vector coil in operation process, to improve the stability of system, three-dimensional vector coil is installed together, can ensure that they are accurately aligned in space, which is essential for generating uniform magnetic field, three-dimensional vector coil is integrated in a frame, can simplify installation and later maintenance, reduce debugging time, this design can usually more effectively utilize space, especially in limited environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of superconducting magnets, in particular to a lightweight vector superconducting magnet structure. BACKGROUND

[0002] A superconducting magnet is wound by superconducting wire, which can reach a superconducting state at low temperature, that is, the coil resistance is zero, that is, it has zero resistance characteristics. This enables the superconducting magnet to carry a large current, thereby generating a powerful electromagnetic field. Different coil shapes can adjust the magnetic field distribution generated to meet various application requirements. The current accuracy provided by the general power supply is limited, and there will be a slight jump, which will cause the generated magnetic field to change, affecting the stability of the magnetic field. In order to obtain a stable magnetic field, a superconducting switch is connected in parallel at both ends of the coil, and after the coil is excited by the power supply, the superconducting switch is closed. Because there is no resistance inside, the current forms a loop between the coil and the switch. At this time, the excitation power is turned off, and the magnetic field can still be maintained. The current in the loop does not fluctuate, so a stable magnetic field can be obtained. For example, magnetic resonance imaging (MRI) systems, low-temperature physical property measurement equipment and other devices have such applications.

[0003] A three-dimensional vector magnet is a device that can accurately control the direction and strength of the magnetic field in three-dimensional space. It is composed of three groups of superconducting magnets placed on the XYZ axis. Because the magnetic field is a vector, by controlling the current of the three groups of magnets, the magnetic field direction in any direction can be obtained. Flexible control of the magnetic field in three-dimensional direction and high uniformity of the magnetic field environment are achieved.

[0004] Generally, experimental research needs to test the performance of the sample under different magnetic fields, and the sample needs to be restored to room temperature. After adjustment, the sample is cooled again, which takes a lot of time. To solve this problem, the three-axis magnet is combined together in the present application, and the magnetic field direction is adjusted directly, which eliminates the complex operation of re-warming and sample replacement.

[0005] At the same time, the greater the mass of the magnet, the longer the cooling time. For example, 1.6K system, dilution refrigerator and other equipment need to increase the superconducting magnet, because they share the same set of refrigerators, the system must wait until the superconducting magnet is cooled to the right temperature before it can work. Therefore, the cooling time of the superconducting magnet determines the waiting time of the equipment operation. To solve this problem, the present application adjusts the coil structure and assembly relationship, greatly reduces the overall weight under the premise of ensuring the structural strength. CONTENT OF THE INVENTION

[0006] In order to solve the technical problem that the existing superconducting magnet is generally bulky due to the limitation of structure, which affects the portability and practicality in scientific instruments, aerospace and medical equipment and other applications, the present application provides a lightweight vector superconducting magnet structure.

[0007] The application provides a lightweight vector superconducting magnet structure, which adopts the following technical scheme:

[0008] A lightweight vector superconducting magnet structure comprises a Z-axis skeleton and an XY skeleton inner cylinder constituting a lightweight support of the superconducting magnet structure, and the outer surfaces of the Z-axis skeleton and the XY skeleton inner cylinder are provided with a magnetic field forming mechanism, and the magnetic field forming mechanism comprises a three-dimensional vector coil.

[0009] Optionally, the three-dimensional vector coil is wound on the outer surfaces of the Z-axis skeleton and the XY skeleton inner cylinder, respectively, and the XY skeleton inner cylinder is fixedly connected with a fixed frame with a circular boss through an inner groove thereof.

[0010] Optionally, the XY skeleton inner cylinder and the fixed frame are in clearance fit.

[0011] Optionally, the surface of the three-dimensional vector coil is attached to the surface of the fixed frame, the inner side of the XY skeleton inner cylinder is fastened to the fixed frame through a third flat washer and a third inner hexagonal cylindrical head screw, and the outer side of the XY skeleton inner cylinder is fastened to the fixed frame through a fourth flat washer and a fourth inner hexagonal cylindrical head screw.

[0012] Optionally, the wound Z-axis skeleton is placed in the fixed frame and locked through a second inner hexagonal cylindrical head screw, and the Z-axis skeleton and the fixed frame are in clearance fit.

[0013] Optionally, the magnetic field forming mechanism further comprises a bottom pressing plate fixedly connected to the lower surface of the XY skeleton inner cylinder through a first inner hexagonal cylindrical head screw, a flange fixedly installed on the upper surface of the XY skeleton inner cylinder, and the XY skeleton inner cylinder is locked with the fixed frame and the Z-axis skeleton through another group of second inner hexagonal cylindrical head screws.

[0014] Optionally, the lower surface of the bottom pressing plate is fixedly connected with a fixed block, and the XY skeleton inner cylinder is provided with a support cylinder at both ends.

[0015] In summary, the application has at least one of the following beneficial technical effects:

[0016] 1. By setting the fixed frame as a reference, the three-dimensional vector coils are installed together, so that the fixed frame provides a solid foundation, reduces the vibration and displacement of the three-dimensional vector coils during operation, thereby improving the stability of the system, and the installation of the three-dimensional vector coils together can ensure their accurate alignment in space, which is crucial for generating a uniform magnetic field, and the integration of the three-dimensional vector coils in a frame can simplify installation and later maintenance, reduce debugging time, and this design can usually make more efficient use of space, especially in limited environments.

[0017] 2、By setting half demoulding structure, namely, the flange of one side of XY skeleton inner cylinder is demoulded, so that the overall weight of the coil can be reduced, the portability is improved, the cooling efficiency of the coil surface is improved, the working temperature is reduced, the XY coil is closer to the center, the volume is reduced, and the central magnetic field is increased.

[0018] 3、By making the three-dimensional vector coil close to the side surface of the fixed frame, the uniformity of the magnetic field can be improved, the close design reduces the gap, ensures the good contact between the coil and the frame, helps the effective conduction of the magnetic field, the close design can effectively reduce the assembly error, ensures the positioning of the coil is more accurate, and the overall performance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a schematic view of a light-weight vector superconducting magnet structure provided by the utility model;

[0020] Fig. 2 is a three-dimensional vector coil structure sectional view of a light-weight vector superconducting magnet structure provided by the utility model;

[0021] Fig. 3 is a first inner hexagonal cylindrical head structure bottom view of a light-weight vector superconducting magnet structure provided by the utility model.

[0022] In the figure: 1, three-dimensional vector coil;2, Z-axis skeleton;3, fixed frame;4, bottom pressing plate;5, flange;6, support cylinder;7, XY skeleton inner cylinder;9, fixed block;10, third flat washer;11, third inner hexagonal cylindrical head;12, fourth flat washer;13, fourth inner hexagonal cylindrical head;14, first inner hexagonal cylindrical head;15, second inner hexagonal cylindrical head. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings Figs. 1-3 The application is further described in detail.

[0024] Refer to Figs. 1-3 A light-weight vector superconducting magnet structure, comprising a Z-axis skeleton 2 and an XY skeleton inner cylinder 7 that constitute a light-weight support of a superconducting magnet structure, the outer surfaces of the Z-axis skeleton 2 and the XY skeleton inner cylinder 7 are provided with a magnetic field forming mechanism, and the magnetic field forming mechanism comprises a three-dimensional vector coil 1.

[0025] Three-dimensional vector coil 1 is wound on the outer surface of Z-axis skeleton 2 and XY skeleton inner tube 7, XY skeleton inner tube 7 is fixedly connected with fixed frame 3 with circular boss through its inner groove, the design of three-dimensional vector coil 1 can realize complex magnetic field configuration through the wire wound on Z-axis skeleton 2 and XY skeleton inner tube 7, Z-axis skeleton 2 provides vertical support, and XY skeleton provides horizontal stability, such structural design not only enhances the uniformity of the magnetic field of the coil, but also effectively reduces the overall weight, improves the flexibility and adjustability of the magnet, and the circular boss of fixed frame 3 further enhances the strength and durability of the structure, preventing the displacement of the wire due to vibration or external force, which improves the performance and reliability of the overall magnet.

[0026] The diameter fitting gap between XY skeleton inner tube 7 and fixed frame 3 is 0-0.1mm, the connection design of XY skeleton inner tube 7 and fixed frame 3 ensures that the diameter fitting gap is within the range of 0-0.1mm, which provides precise butt joint, such fitting not only ensures the stability of the structure and prevents the displacement of the wire, but also effectively reduces the influence of vibration on the performance of the magnet, and precise gap control helps to improve the uniformity and effect of the overall magnetic field.

[0027] The surface of three-dimensional vector coil 1 is attached to the surface of fixed frame 3, the inner side of XY skeleton inner tube 7 is fastened with fixed frame 3 through third flat washer 10 and third inner hexagonal cylinder head 11 screw, and the outer side of XY skeleton inner tube 7 is fastened with fixed frame 3 through fourth flat washer 12 and fourth inner hexagonal cylinder head 13 screw, which ensures that three-dimensional vector coil 1 is tightly attached to the side of fixed frame 3, and can improve the uniformity of the magnetic field, the third flat washer 10 and the third inner hexagonal cylinder head 11 screw are locked, which ensures the close connection between the fixed frame 3, and the fourth screw provides stronger locking force, which is suitable for external load and vibration influence, this double locking design ensures the rigidity and stability of XY skeleton inner tube 7, prevents loosening and deformation.

[0028] The wound Z-axis skeleton 2 is placed in fixed frame 3 and locked through second inner hexagonal cylinder head 15 screw, the diameter fitting gap between Z-axis skeleton 2 and fixed frame 3 is 0-0.1mm, the small fitting gap between Z-axis skeleton 2 and fixed frame 3 helps to reduce friction, ensures smooth movement, and provides sufficient stability and support force.

[0029] By setting the three-dimensional vector coils 1 together with the fixed frame 3 as the reference, the fixed frame 3 provides a solid foundation, reducing the vibration and displacement of the three-dimensional vector coils 1 during operation, thereby improving the stability of the system. The three-dimensional vector coils 1 are installed together to ensure their accurate alignment in space, which is crucial for generating a uniform magnetic field. Integrating the three-dimensional vector coils 1 in one frame can simplify installation and later maintenance, reducing debugging time. This design can generally make more efficient use of space, especially in limited environments.

[0030] The magnetic field forming mechanism further comprises a bottom pressing plate 4 fixedly connected to the lower surface of the XY skeleton inner cylinder 7 by a first internal hexagonal cylinder head 14 screw, and a flange 5 fixedly installed on the upper surface of the XY skeleton inner cylinder 7. The XY skeleton inner cylinder 7 is locked with the fixed frame 3 and the Z-axis skeleton 2 respectively by another set of second internal hexagonal cylinder head 15 screws. The bottom pressing plate 4 is stably connected with the XY skeleton inner cylinder 7 by the first internal hexagonal cylinder head 14 screw, thereby improving the stability of the overall structure. The flange 5 fixedly installed on the upper surface of the XY skeleton inner cylinder 7 plays a role in connecting and supporting other components, which helps to enhance the stability and overall performance of the structure.

[0031] By setting the semi-die structure, i.e. removing the flange 5 on one side of the XY skeleton inner cylinder 7, the overall weight of the coil can be reduced, the portability can be improved, and the cooling efficiency of the coil surface can be improved, thereby reducing the working temperature. At the same time, the XY coil is closer to the center, which reduces the volume while increasing the central magnetic field.

[0032] The lower surface of the bottom pressing plate 4 is fixedly connected with a fixed block 9, and the XY skeleton inner cylinder 7 is provided with a support cylinder 6 at both ends. The fixed block 9 fixedly connected to the lower surface of the bottom pressing plate 4 can enhance the connection with the XY skeleton inner cylinder 7, while the support cylinder 6 installed at both ends of the XY skeleton inner cylinder 7 provides additional support to ensure the stability and load-bearing capacity of the overall structure. At the same time, the support cylinder 6 can also be installed at the center of the XY skeleton inner cylinder 7.

[0033] By making the three-dimensional vector coils 1 tightly fit the side surface of the fixed frame 3, the uniformity of the magnetic field can be improved, and the design of tight fit reduces the gap to ensure good contact between the coil and the frame, which helps to effectively conduct the magnetic field. At the same time, the design of tight fit can effectively reduce the assembly error, ensuring more accurate positioning of the coil, thereby improving the overall performance.

[0034] Working principle: When the current passes through the three-dimensional vector coils 1, the wires wound around the Z-axis and XY-axis generate corresponding electromagnetic fields. Due to the close cooperation and stable connection of the components in the design, the uniformity and stability of the electromagnetic field are enhanced, thereby improving the performance of the overall system.

[0035] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A lightweight vector superconducting magnet structure, characterized by: The application relates to a magnetic field forming mechanism which comprises a Z-axis skeleton (2) and an XY skeleton inner cylinder (7) which constitute a light-weight support of a superconducting magnet structure, wherein the outer surfaces of the Z-axis skeleton (2) and the XY skeleton inner cylinder (7) are provided with the magnetic field forming mechanism, and the magnetic field forming mechanism comprises a three-dimensional vector coil (1). The three-dimensional vector coil (1) is wound on the outer surfaces of the Z-axis skeleton (2) and the XY skeleton inner cylinder (7) respectively, the XY skeleton inner cylinder (7) is fixedly connected with a fixed frame (3) with a circular boss through an inner groove of the XY skeleton inner cylinder (7); The XY skeleton inner cylinder (7) and the fixed frame (3) are in clearance fit in diameter. The surface of the three-dimensional vector coil (1) is attached to the surface of the fixed frame (3), the inner side of the XY skeleton inner cylinder (7) is fastened with the fixed frame (3) through a third flat washer (10) and a third inner hexagonal cylinder head (11) screw, and the outer side of the XY skeleton inner cylinder (7) is fastened with the fixed frame (3) through a fourth flat washer (12) and a fourth inner hexagonal cylinder head (13) screw.

2. The lightweight vector superconducting magnet structure of claim 1, wherein: The wound Z-axis skeleton (2) is locked in the fixed frame (3) through a second inner hexagonal cylinder head (15) screw, and the Z-axis skeleton (2) and the fixed frame (3) are in clearance fit in diameter.

3. A lightweight vector superconducting magnet structure according to claim 2, characterized in that: The magnetic field forming mechanism further comprises a bottom pressing plate (4) fixedly connected to the lower surface of the XY skeleton inner cylinder (7) through a first inner hexagonal cylinder head (14) screw, a flange (5) fixedly installed on the upper surface of the XY skeleton inner cylinder (7), and the XY skeleton inner cylinder (7) is locked with the fixed frame (3) and the Z-axis skeleton (2) through another group of second inner hexagonal cylinder head (15) screws.

4. The lightweight vector superconducting magnet structure of claim 3, wherein: The lower surface of the bottom pressing plate (4) is fixedly connected with a fixed block (9), and the XY skeleton inner cylinder (7) is provided with a supporting cylinder (6) at both ends.

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