High-overload pre-tightening type high-temperature superconducting coil structure for electromagnetic ejection

Abstract

The utility model provides a high-overload pre-tightening type high-temperature superconducting coil structure for electromagnetic ejection, which comprises a plurality of high-temperature superconducting coil assemblies arranged in a laminated manner, and each high-temperature superconducting coil assembly comprises a coil framework and a high-temperature superconducting coil. Two axial sides of each coil framework are fixedly connected with end plates respectively, and two axial sides of each high-temperature superconducting coil abut against the end plates respectively, so that the high-temperature superconducting coils are limited in the axial direction through the end plates; and at least one end plate is arranged between two adjacent high-temperature superconducting coil assemblies. A plurality of first limiting pieces distributed at intervals in the circumferential direction are further arranged between every two adjacent high-temperature superconducting coil assemblies, and each first limiting piece penetrates through the end plate between every two adjacent high-temperature superconducting coil assemblies in the axial direction. And relative rotation of the two adjacent high-temperature superconducting coil assemblies in the circumferential direction and relative movement of the two adjacent high-temperature superconducting coil assemblies in the radial direction of the coil framework are limited through the first limiting pieces.

Description

Technical Field

[0001] This utility model relates to the field of superconducting coil technology, and in particular to a high-overload preload high-temperature superconducting coil structure for electromagnetic catapults. Background Technology

[0002] Electromagnetic catapult technology utilizes the electromagnetic force generated by a linear catapult motor to increase launch speed. The high-temperature superconducting magnet is the core power component of the electromagnetic catapult system, and its structural stability directly determines the thrust accuracy, launch efficiency, and operational safety of the catapult. A pulsed high current passing through the coil generates extremely strong axial electromagnetic thrust and radial expansion force. Under conditions of high catapult acceleration (up to 10g–20g or even higher), the coil must withstand enormous inertial impacts and vibration loads. Simultaneously, it must be adapted to the low-temperature, vacuum environment required for superconducting magnet operation. All these complex operating environments of the superconducting coil adversely affect its structural stability.

[0003] The superconducting coil structure includes a coil frame and multilayer superconducting coils wound around the outer periphery of the coil frame along the axial direction. In the prior art, the coil frame is an integral cylindrical or tubular structure. The multilayer superconducting coils are wound along the axial direction of the coil frame and simply fixed at the outer periphery of the coil or at both ends of the axial direction of the coil frame. Under high overload impact and strong electromagnetic force, interlayer circumferential torsion is likely to occur between adjacent superconducting coils. For example, two adjacent superconducting coils will rotate relative to each other in the circumferential direction of the superconducting coil, resulting in distortion of the air gap magnetic field, affecting the thrust accuracy of electromagnetic catapults, and further aggravating the structural damage of the coil. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem that interlayer circumferential torsion easily occurs between adjacent superconducting coils in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides a high-overload preload high-temperature superconducting coil structure for electromagnetic catapults. The high-temperature superconducting coil structure includes: multiple high-temperature superconducting coil assemblies stacked together, each high-temperature superconducting coil assembly including a ring-shaped coil frame and a high-temperature superconducting coil wound around the outer periphery of the coil frame along the circumference of the coil frame; each coil frame is fixedly connected to end plates on both sides along its axial direction, and each high-temperature superconducting coil abuts against the end plates on both sides along its axial direction to limit the high-temperature superconducting coil in the axial direction through the end plates; at least one end plate is provided between two adjacent high-temperature superconducting coil assemblies; and multiple first limiting members are also provided between two adjacent high-temperature superconducting coil assemblies at circumferential intervals, each first limiting member passing through the end plate between two adjacent high-temperature superconducting coil assemblies in the axial direction to limit the relative rotation between the two adjacent high-temperature superconducting coil assemblies in the circumferential direction and the relative movement in the radial direction of the coil frame through the first limiting members.

[0006] By adopting the above technical solution, the high-temperature superconducting coil wound on the coil frame is axially limited by the end plates set on both sides of each high-temperature superconducting coil assembly, preventing the high-temperature superconducting coil from shifting axially along the coil frame; the end plates are fixedly connected to the coil frame, which can limit the coil frame radially, preventing radial misalignment between the end plates and the coil frame; each first limiting member passes through the end plate between two adjacent high-temperature superconducting coil assemblies, which can limit the relative movement between the two adjacent high-temperature superconducting coil assemblies in the radial direction of the coil frame; further setting multiple first limiting members along the circumference of the coil frame can also limit the relative rotation between the two adjacent high-temperature superconducting coil assemblies in the circumference of the coil frame.

[0007] According to another specific embodiment of the present invention, the high overload pre-tightening high temperature superconducting coil structure for electromagnetic catapult provided by the present invention has two end plates arranged opposite each other along the axial direction between two adjacent high temperature superconducting coil assemblies. The two end plates are fixedly connected to the coil skeleton of the adjacent high temperature superconducting coil assembly. Multiple first limiting holes are respectively opened on the opposite sides of the two end plates along the circumferential direction. The first limiting holes of the two end plates are arranged in pairs along the axial direction. Each first limiting member passes through the corresponding pair of first limiting holes along the axial direction to limit the relative rotation between the two end plates in the circumferential direction and the relative movement in the radial direction.

[0008] By adopting the above technical solution, the two end plates on the two end plates of the two adjacent high-temperature superconducting coil assemblies are connected by passing through the first limiting holes on the two end plates respectively. This restricts the relative rotation of the two end plates in the circumferential direction of the coil frame and the relative movement of the coil frame in the radial direction. Since each end plate is fixedly connected to the adjacent coil frame, the relative rotation of the two adjacent high-temperature superconducting coil assemblies in the circumferential direction of the coil frame and the relative movement of the coil frame in the radial direction are also restricted.

[0009] According to another specific embodiment of the present invention, the high overload pre-tensioned high-temperature superconducting coil structure for electromagnetic catapult provided by the present invention has each end plate being annular and extending radially from the inner side of the coil skeleton to the outer side of the high-temperature superconducting coil. The end of each end plate radially close to the coil skeleton is fixedly connected to the adjacent coil skeleton. One of the two axially opposite end plates is provided with a flange at the end of its radially close to the coil skeleton. The flange extends axially toward the other end plate, and the end of the other end plate radially close to the coil skeleton abuts against the flange, so as to restrict the radial movement of the other end plate relative to one of the end plates by means of the flange.

[0010] Using the above technical solution, when two end plates are stacked, a flange extending toward the other end plate is provided at the end of one end plate, and the end of the end plate without the flange abuts against the flange. The flange can restrict the end plate without the flange from moving inward in the radial direction of the coil frame (the side closer to the center of the coil frame is the inner side, and the side farther from the center of the coil frame is the outer side).

[0011] According to another specific embodiment of the present invention, the high overload pre-tightening high-temperature superconducting coil structure for electromagnetic catapult provided by the present invention includes a radial limiting component on the outer periphery of each high-temperature superconducting coil. Each radial limiting component extends in the circumferential direction and is used to press the high-temperature superconducting coil against the outer periphery of the coil frame in the radial direction. Each radial limiting component includes an adjusting component and a pushing component. The adjusting component includes a supporting component and a pre-tightening adjusting component. The supporting components are spaced apart on the outer periphery of the high-temperature superconducting coil and are fixedly connected to two end plates on both sides of the high-temperature superconducting coil along the axial direction. The pre-tightening adjusting component passes through the supporting component in the radial direction. The end of the pre-tightening adjusting component near the high-temperature superconducting coil is fixedly connected to the pushing component. The pre-tightening adjusting component can move radially relative to the supporting component to press the high-temperature superconducting coil against the outer periphery of the coil frame through the pushing component.

[0012] By adopting the above technical solution, a radial limiting component is set on the outer periphery of the high-temperature superconducting coil to limit the deformation of the high-temperature superconducting coil to the outer periphery. Specifically, the high-temperature superconducting coil is pressed against the outer periphery of the coil frame by applying a pressing force along the radial direction of the coil frame. In other words, the inner and outer sides of the high-temperature superconducting coil are limited by the pressing component and the coil frame to prevent deformation of the high-temperature superconducting coil. The pre-tightening adjustment component of the adjustment component is used to adjust the position of the pressing component and the magnitude of the pressing force applied by the pressing component to the high-temperature superconducting coil.

[0013] According to another specific embodiment of the present invention, the high overload pre-tightened high-temperature superconducting coil structure for electromagnetic catapult provided by the present invention further includes a pre-tightening component in each radial limiting assembly. The pre-tightening component includes a pre-tightening member and an elastic buffer member. The pre-tightening member is disposed on the outer periphery of the high-temperature superconducting coil and presses the high-temperature superconducting coil against the outer periphery of the coil frame. The pre-tightening member has a radially extending recess on the side that is radially away from the high-temperature superconducting coil. The elastic buffer member is disposed in the recess. One end of the elastic buffer member abuts against the bottom wall of the recess, and the other end of the elastic buffer member abuts against the end of the pusher member that is close to the high-temperature superconducting coil.

[0014] By adopting the above technical solution, by setting an elastic buffer and a pre-tightening component between the high-temperature superconducting coil and the pusher, the elastic buffer can maintain the clamping force on the high-temperature superconducting coil basically constant under impact, vibration and thermal cycling conditions, and avoid clamping force relaxation or local overpressure, thereby improving the fatigue life and long-term operational reliability of the high-temperature superconducting coil under high-frequency pulse conditions.

[0015] According to another specific embodiment of the present invention, the high overload preload high temperature superconducting coil structure for electromagnetic catapult provided by the present invention has at least two radial limiting components arranged circumferentially on the outer periphery of each high temperature superconducting coil assembly. In each radial limiting component, the support member is set as an arc-shaped plate structure extending circumferentially, and the pushing member and the preload member are both set as arc-shaped plates extending circumferentially and axially. Furthermore, each preload member has multiple recesses extending radially on the side facing away from the high temperature superconducting coil in the radial direction. The multiple recesses are evenly spaced circumferentially. Each elastic buffer member is configured as multiple disc springs stacked in the radial direction.

[0016] The purpose of using the above technical solution and setting at least two radial limiting components is to ensure that the high-temperature superconducting coil is limited in its entire circumferential direction while reducing the size of a single radial limiting component, making it easier to disassemble and assemble. Disc springs can withstand large loads within a short elastic deformation space, which is beneficial for optimizing the structural layout and reducing the size of the radial limiting components. When multiple disc springs are used in combination, the surface friction between adjacent disc springs will quickly dissipate the impact energy, and the damping effect is far superior to that of undamped helical springs.

[0017] According to another specific embodiment of the present invention, the high overload pre-tightening high-temperature superconducting coil structure for electromagnetic catapult provided by the present invention has each end plate being fixedly connected to the adjacent coil frame at one end along the radial direction by a plurality of first fasteners spaced apart along the circumferential direction; the cross-section of each support member is U-shaped, the opening of the U-shaped structure is radially facing the high-temperature superconducting coil, and the two side walls of the U-shaped structure are fixedly connected to the two end plates on both sides of each coil frame along the axial direction by a plurality of second fasteners spaced apart along the circumferential direction, and the cross-section is the section of the support member perpendicular to its length direction.

[0018] According to another specific embodiment of the present invention, the high overload preload high temperature superconducting coil structure for electromagnetic catapult provided by the present invention includes at least two metal cooling plates arranged circumferentially on the outer periphery of each high temperature superconducting coil. The metal cooling plates are arc-shaped plates extending circumferentially and axially, and are thermally connected to the high temperature superconducting coil. A partition is provided between the two ends of two adjacent metal cooling plates in the circumferential direction. Each high temperature superconducting coil includes multiple conductor layers stacked axially. A first insulating layer is provided between two adjacent conductor layers. A second insulating layer is provided between the inner circumferential surface of each conductor layer and the outer circumferential surface of the coil frame. A third insulating layer is provided between the outer circumferential surface of each conductor layer and the metal cooling plate. A fourth insulating layer is provided on the side of each end plate close to the conductor layer along the axial direction.

[0019] Using the above technical solution, one function of the metal cold-conducting plate is to conduct the temperature of the external cold source to the high-temperature superconducting coil, making the surface temperature of the high-temperature superconducting coil uniform. Another function is to act as a buffer between the pre-tightening component and the high-temperature superconducting coil, preventing the pre-tightening component from directly pressing onto the high-temperature superconducting coil. The insulating properties of the partition plate can separate adjacent metal cold-conducting plates, preventing them from forming a monolithic ring structure around the coil frame, thus avoiding eddy currents during excitation. Multiple insulating layers (first, second, third, and fourth insulating layers) insulate each conductor layer from adjacent components, ensuring that current flows only within the conductor, avoiding unnecessary heat conduction, preventing short circuits, or delaying quench propagation, thus protecting the high-temperature superconducting coil.

[0020] According to another specific embodiment of the present invention, the high overload pre-tensioned high temperature superconducting coil structure for electromagnetic catapult provided by the present invention further includes a low temperature shell, which includes a shell body and a cover plate. The shell body has a receiving cavity inside, and multiple high temperature superconducting coil assemblies are arranged in the receiving cavity along the height direction of the receiving cavity, which is parallel to the axial direction. The cover plate is fixed along the axial direction and pressed against the opening of the receiving cavity to restrict the relative movement of the multiple high temperature superconducting coil assemblies along the axial direction.

[0021] By adopting the above technical solution, the cover plate and the bottom wall of the shell body limit the height of the multiple high-temperature superconducting coil components at both ends, thereby preventing relative movement between the multiple high-temperature superconducting coil components along the axial direction of the coil skeleton.

[0022] According to another specific embodiment of the present invention, the high overload pre-tightening high temperature superconducting coil structure for electromagnetic catapult provided by the present invention has multiple second limiting members distributed circumferentially between the cover plate and the adjacent end plate, and between the bottom wall of the receiving cavity and the adjacent end plate, so as to limit the relative rotation of the multiple high temperature superconducting coil assemblies and the low temperature shell in the circumferential direction and the relative movement in the radial and axial directions.

[0023] By adopting the above technical solution, the second limiting member is inserted between the end plate and the cover plate, and between the end plate and the bottom wall of the receiving cavity. This can limit the relative rotation of multiple high-temperature coil assemblies and the cover plate in the circumferential direction of the coil skeleton, and also limit the relative movement of multiple high-temperature coil assemblies and the cover plate in the radial and axial directions of the coil skeleton. Furthermore, it can limit the relative rotation of multiple high-temperature coil assemblies and the shell body in the circumferential direction of the coil skeleton, and also limit the relative movement of multiple high-temperature coil assemblies and the shell body in the radial and axial directions of the coil skeleton.

[0024] The beneficial technical effects of this utility model are as follows: The high overload preload high-temperature superconducting coil structure for electromagnetic catapults provided by this utility model includes multiple high-temperature superconducting coil assemblies stacked together. Each high-temperature superconducting coil assembly includes a ring-shaped coil frame and a high-temperature superconducting coil wound around the outer circumference of the coil frame. The high-temperature superconducting coil wound on the coil frame is axially limited by end plates set on both sides of each high-temperature superconducting coil assembly to prevent the high-temperature superconducting coil from shifting axially along the coil frame. Fixing the end plates to the coil frame can limit the coil frame radially, preventing radial misalignment between the end plates and the coil frame. Each first limiting member passes through the end plate between two adjacent high-temperature superconducting coil assemblies, which can limit the relative movement of the two adjacent high-temperature superconducting coil assemblies in the radial direction of the coil frame. Furthermore, setting multiple first limiting members along the circumference of the coil frame can also limit the relative rotation of the two adjacent high-temperature superconducting coil assemblies in the circumferential direction of the coil frame. Attached Figure Description

[0025] Figure 1 A cross-sectional schematic diagram of a high-overload pre-tensioned high-temperature superconducting coil structure for electromagnetic catapults provided for a specific embodiment of this utility model;

[0026] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0027] Figure 3 A top view of a high-overload pre-tensioned high-temperature superconducting coil structure for electromagnetic catapults (excluding the cryogenic container) provided for a specific embodiment of this utility model.

[0028] Figure 4A partial side view of a high-overload pre-tensioned high-temperature superconducting coil structure for electromagnetic catapults provided for a specific embodiment of this utility model (including a high-temperature superconducting coil assembly and an end plate).

[0029] Figure 5 A partial structural schematic diagram of the radial limiting component of the high overload pre-tightening high-temperature superconducting coil structure for electromagnetic catapults, provided for a specific embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. High-temperature superconducting coil assembly;

[0032] 10. Coil frame; 11. High-temperature superconducting coil; 110. Conductor layer;

[0033] 2. End plate; 20. First limiting hole; 21. Flange;

[0034] 3a. First limiting component; 3b. Second limiting component;

[0035] 4. Radial limiting assembly; 40. Adjusting component; 400. Support component; 401. Preload adjusting component; 41. Pushing component; 42. Preload component; 420. Preload component; 4200. Recess; 421. Elastic buffer component; 4210. Disc spring;

[0036] 5. First fastener;

[0037] 6. Second fastener;

[0038] 7a. Metal cooling plate; 7b. Partition plate;

[0039] 8. Insulating component; 80. First insulating layer; 81. Second insulating layer; 82. Third insulating layer; 83. Fourth insulating layer;

[0040] 9. Low-temperature shell; 90. Shell body; 900. Receiving cavity; 91. Cover plate; 92. Stepped section;

[0041] X, radial direction of the coil frame; Y, axial direction of the coil frame. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0043] This utility model provides a high-overload preload high-temperature superconducting coil structure for electromagnetic catapults. (See also...) Figure 1 and Figure 2The high-temperature superconducting coil structure includes multiple high-temperature superconducting coil assemblies 1 stacked together. These assemblies 1 can consist of two, five, ten, or more stacked components. Each high-temperature superconducting coil assembly 1 includes a ring-shaped coil frame 10 and a high-temperature superconducting coil 11 wound circumferentially around the outer periphery of the coil frame 10. The coil frame 10 has a hollow cylindrical structure, and multiple conductor layers 110 can be wound around its outer periphery. The stacking direction of the multiple conductor layers 110 is parallel to the axial direction of the coil frame 10. Figure 1 and Figure 2 (as shown in the Y direction), and the axial direction of the coil frame 10 is parallel to the direction in which the plurality of high-temperature superconducting coil assemblies 1 are stacked. Along the axial direction of the coil frame 10, the two ends of the high-temperature superconducting coil 11 are flush with the two axial ends of the coil frame 10.

[0044] Furthermore, such as Figure 1 and Figure 2 As shown, each coil frame 10 has end plates 2 fixedly connected to both sides along its axial direction, and each high-temperature superconducting coil 11 abuts against the end plates 2 on both sides along its axial direction. The end plates 2 isolate adjacent high-temperature superconducting coil assemblies 1, making multiple high-temperature superconducting coil assemblies 1 independent of each other and preventing short circuits or heat dissipation. The end plates 2 are also used to limit the high-temperature superconducting coil 11 in the axial direction of the coil frame 10, that is, by setting the end plates 2 on both sides of each high-temperature superconducting coil assembly 1, the high-temperature superconducting coil 11 wound on the coil frame 10 is axially limited, preventing the high-temperature superconducting coil 11 from shifting along the axial direction of the coil frame 10; fixing the end plates 2 to the coil frame 10 can limit the coil frame 10 in the radial direction ( Figures 1-4 The end plate 2 is positioned in the X direction (as shown in the diagram) to prevent radial misalignment between the end plate 2 and the coil frame 10. At least one end plate 2 is provided between two adjacent high-temperature superconducting coil assemblies 1, and multiple first limiting members 3a are also provided between two adjacent high-temperature superconducting coil assemblies 1 at circumferential intervals along the coil frame 10. Each first limiting member 3a passes through the end plate 2 between two adjacent high-temperature superconducting coil assemblies 1 along the axial direction of the coil frame 10. Each first limiting member 3a passing through the end plate 2 between two adjacent high-temperature superconducting coil assemblies 1 can limit the relative movement of the two adjacent high-temperature superconducting coil assemblies 1 in the radial direction of the coil frame 10. Furthermore, providing multiple first limiting members 3a along the circumferential direction of the coil frame 10 can also limit the relative rotation of the two adjacent high-temperature superconducting coil assemblies 1 in the circumferential direction of the coil frame 10.

[0045] The structure of the end plate 2 and the first limiting member 3a restricts the relative rotation in the circumferential direction and the relative movement in the radial direction between two adjacent high-temperature superconducting coil assemblies 1 in the coil frame 10. When a pulsed high current passes through the high-temperature superconducting coil 11 and generates extremely strong radial expansion force and circumferential torsional force, it ensures that each high-temperature superconducting coil assembly 1 can effectively withstand the electromagnetic force, avoids problems such as interlayer slippage and interlayer misalignment of adjacent high-temperature superconducting coil assemblies 1, and significantly improves the structural stability of the high-temperature superconducting coil assembly 1 in extreme mechanical environments.

[0046] It should be noted that when an end plate 2 is provided between two adjacent high-temperature superconducting coil assemblies 1, the two adjacent high-temperature superconducting coil assemblies 1 are located on both sides of the thickness direction of the end plate 2. A through hole can be opened on the end plate 2 along its thickness direction (parallel to the axial direction of the coil skeleton 10). The first limiting member 3a is inserted into the through hole and the two ends of the first limiting member 3a are fixedly connected to the two coil skeletons 10 on both sides of the end plate 2 by means of plugging or other methods. When two end plates 2 are provided between two adjacent high-temperature superconducting coil assemblies 1, the two end plates 2 are arranged parallel to each other. They can be attached to each other or arranged relatively apart. Corresponding blind holes (or through holes) can be opened on the opposite surfaces of the two end plates 2. The two ends of the first limiting member 3a can pass through the two opposite blind holes (or through holes) respectively.

[0047] It should also be noted that multiple first limiting members 3a can be provided in two, four, eight or more, and those skilled in the art can set them as needed. Each first limiting member 3a can be a cylindrical pin or a prismatic pin, as long as it can pass through the end plate 2 and achieve the limiting between two adjacent high-temperature superconducting coil assemblies 1.

[0048] In one specific embodiment of this utility model, such as Figure 1 and Figure 2 As shown, two end plates 2 are provided between two adjacent high-temperature superconducting coil assemblies 1, which are arranged opposite each other along the axial direction of the coil frame 10. The two end plates 2 are fixedly connected to the coil frame 10 of the adjacent high-temperature superconducting coil assembly 1. For example, a through hole is opened at one end of each end plate 2 near the coil frame 10, and a connecting hole is opened at the end of the coil frame 10 along its axial direction. The two are fixedly connected by fasteners passing through the through hole on the end plate 2 and the connecting hole on the coil frame 10. Alternatively, the two can be fixed by bonding or welding on the surface of each end plate 2 adjacent to the coil frame 10 at one end near the coil frame 10.

[0049] The method for restricting the relative rotation of the two end plates 2 in the circumferential direction and the relative movement of the two end plates 10 in the radial direction is to provide a plurality of first limiting holes 20 distributed circumferentially on the opposite sides of the two end plates 2. The first limiting holes 20 of the two end plates 2 are arranged in pairs along the axial direction. Each first limiting member 3a passes through the corresponding pair of first limiting holes 20 along the axial direction. In the radial direction of the coil frame 10, the first limiting holes 20 can be located at the end of the end plate 2 away from the coil frame 10, or at the middle of the coil frame 10, or at the end close to the coil frame 10. The first limiting holes 20 can be blind holes or through holes, as long as the first limiting member 3a can be inserted into the corresponding two first limiting holes 20. When the first limiting hole 20 is located at the end close to the coil frame 10 and is a through hole, a first limiting member 3a can pass through the two end plates 2 and the two adjacent coil frames 10 of the two end plates 2, so that the limiting is achieved while using fewer parts. By having the two ends of the first limiting member 3a pass through the first limiting holes 20 on the two end plates 2 respectively, the two end plates 2 on the two adjacent high-temperature superconducting coil assemblies 1 are connected to each other, so as to restrict the relative rotation between the two end plates 2 in the circumferential direction of the coil frame 10 and the relative movement in the radial direction of the coil frame 10. Furthermore, by fixing each end plate 2 to the adjacent coil frame 10, it is possible to restrict the relative rotation between the two adjacent high-temperature superconducting coil assemblies 1 in the circumferential direction of the coil frame 10 and the relative movement in the radial direction of the coil frame 10.

[0050] It should be noted that two, four, eight or more first limiting holes 20 can be provided on each end plate 2. Those skilled in the art can set them as needed, as long as they are evenly spaced around the circumference of the coil frame 10. Each first limiting hole 20 can be a round hole or a square hole.

[0051] In one specific embodiment of this utility model, such as Figure 3 As shown, each end plate 2 is fixedly connected to the adjacent coil frame 10 at one end radially close to the coil frame 10 by a plurality of first fasteners 5 spaced circumferentially along the coil frame 10, as shown. Figure 1 and Figure 2 As shown, each coil frame 10 has connecting holes extending axially at both ends. A first fastener 5 (e.g., a set screw) passes through the end plate 2 along the axial direction of the coil frame 10 and extends into the connecting hole of the coil frame 10 to fix the end plate 2 to the coil frame 10. The two end plates 2 on both sides of each coil frame 10 are fixed at both ends of the coil frame 10 axially by two first fasteners 5.

[0052] It should be noted that the first fastener 5 that fixes each coil frame 10 to an adjacent end plate 2 can be set in two, four, eight or more.

[0053] In one specific embodiment of this utility model, each end plate 2 has an annular plate structure adapted to the coil frame 10, such as... Figures 1-3 As shown, in the radial direction of the coil frame 10, each end plate 2 extends radially from the inner side of the coil frame 10 (the side closer to the center of the coil frame 10 is the inner side, and the side farther from the center of the coil frame 10 is the outer side) towards the outer side of the high-temperature superconducting coil 11. The inner circumferential surface of each end plate 2 near its geometric center can be flush with the inner circumferential surface of the coil frame 10 in the axial direction and is fixedly connected to the adjacent coil frame 10. The outer circumferential surface of each end plate 2 away from its geometric center can be flush with the outer circumferential surface of the high-temperature superconducting coil 11 in the axial direction, or it can extend beyond the outer circumferential surface of the high-temperature superconducting coil 11. Figure 2 and Figure 4 As shown, when two end plates 2 are stacked, one of the two end plates 2 that are axially opposite each other along the coil frame 10 is provided with a flange 21 at one end of the coil frame 10 that is radially close to the coil frame 10. The flange 21 protrudes radially from the end plate 2 without a flange and extends axially toward the other end plate 2. The end plate 2 without a flange abuts against the flange 21 at one end of the coil frame 10 that is radially close to the coil frame 10. The flange 21 can restrict the end plate 2 without a flange from moving inward radially in the coil frame 10.

[0054] It should be noted that the flange 21 can be a plurality of stops evenly spaced along the circumference of the coil frame 10, or it can be a ring-shaped structure, as long as it can abut against the end face of the end plate 2 without flange.

[0055] In one specific embodiment of this utility model, such as Figures 1-4 As shown, a radial limiting component 4 is provided on the outer periphery of each high-temperature superconducting coil 11. Each radial limiting component 4 extends circumferentially around the coil frame 10 and is arranged around the circumference of each high-temperature superconducting coil 11. It is used to apply an inward clamping force to the outer peripheral surface of the high-temperature superconducting coil 11, thereby pressing the high-temperature superconducting coil 11 radially against the outer peripheral surface of the coil frame 10 and restricting the high-temperature superconducting coil 11 from deforming radially outward from the coil frame 10. The radial limiting component 4 can be an annular structure sleeved on the outer periphery of the high-temperature superconducting coil 11, or it can be a structure formed by splicing multiple components capable of applying radial clamping force along the circumference of the coil frame 10.

[0056] Specifically, such as Figures 2-4As shown, each radial limiting assembly 4 includes an adjusting component 40 and a pushing component 41. The pushing component 41 can apply a clamping force to the outer periphery of the high-temperature superconducting coil 11. The adjusting component 40 is used to adjust the radial displacement of the pushing component 41 in the coil frame 10 to adjust the clamping force of the pushing component 41. The adjusting component 40 includes a support component 400 and a pre-tightening adjusting component 401. The support component 400 is spaced apart on the outer periphery of the high-temperature superconducting coil 11, and the two ends of the support component 400 in the axial direction of the coil frame 10 are respectively fixedly connected to two end plates 2 on both sides of the high-temperature superconducting coil 11 along the axial direction of the coil frame 10. The support component 400 is used to install the pre-tightening adjusting component 401. The pre-tightening adjusting component 401 passes through the support component 400 in the radial direction and can move radially relative to the support component 400 in the coil frame 10. The pre-tightening adjusting component 401 is located in the radial direction of the coil frame 10. One end of the high-temperature superconducting coil 11 is fixedly connected to the pusher 41, which can be a pressure plate, pressure block, or other structure. The pre-tightening adjustment member 401 can be an adjusting bolt or telescopic rod, or other structure. While the pre-tightening adjustment member 401 moves radially relative to the support member 400 along the coil frame 10, it also drives the pusher 41 to move radially along the coil frame 10, i.e., closer to or further away from the high-temperature superconducting coil 11. The pre-tightening adjustment member 401 can drive the pusher 41 closer to the high-temperature superconducting coil 11, thereby pressing the high-temperature superconducting coil 11 tightly against the outer circumferential surface of the coil frame 10. This arrangement limits the inner and outer sides of the high-temperature superconducting coil 11 through the pusher 41 and the coil frame 10, preventing the high-temperature superconducting coil 11 from deforming radially in the coil frame 10.

[0057] In one specific embodiment of this utility model, such as Figure 2 and Figure 3As shown, each radial limiting assembly 4 also includes a pre-tightening component 42, which is disposed between the high-temperature superconducting coil 11 and the pusher 41, and applies the clamping force of the pusher 41 to the high-temperature superconducting coil 11 uniformly and slowly. The pre-tightening component 42 includes a pre-tightening member 420 and an elastic buffer member 421. The pre-tightening member 420 is disposed on the outer periphery of the high-temperature superconducting coil 11, and can initially limit the high-temperature superconducting coil 11 before the clamping force is applied. The pre-tightening member 420 has a recess 4200 extending radially along the coil frame 10 on the side of the coil frame 10 away from the high-temperature superconducting coil 11 in the radial direction. The opening of the recess 4200 faces outward along the radial direction of the coil frame 10. The elastic buffer member 421 is disposed in the recess 4200, and one end of the elastic buffer member 421 is attached to the bottom wall of the recess 4200. The other end of the elastic buffer 421 abuts against the end of the pusher 41 near the high-temperature superconducting coil 11. The elastic support force of the elastic buffer 421 and the clamping force of the pusher 41 can press the high-temperature superconducting coil 11 against the outer circumference of the coil frame 10. Furthermore, the elastic buffer performance of the elastic buffer 421 can maintain the clamping force on the high-temperature superconducting coil 11 basically constant under impact, vibration, and thermal cycling conditions, avoiding loosening of the clamping force or local overpressure. This can improve the fatigue life and long-term operational reliability of the high-temperature superconducting coil 11 under high-frequency pulse conditions.

[0058] It should be noted that the elastic buffer 421 can be a spring rod, a disc spring 4210, or other components with elastic buffering properties.

[0059] In one specific embodiment of this utility model, such as Figure 3 As shown, at least two radial limiting components 4 are arranged along the circumference of the coil frame 10 around the outer periphery of each high-temperature superconducting coil assembly 1. These at least two radial limiting components 4 are arranged sequentially along the circumference of the coil frame 10. Each radial limiting component 4 has the same structure. The purpose of providing at least two radial limiting components 4 is to ensure that the high-temperature superconducting coil 11 is limited along its entire circumference while reducing the size of a single radial limiting component 4, facilitating disassembly and assembly. Each limiting component has an arc-shaped structure in the circumference of the coil frame 10, adapting to a portion of the high-temperature superconducting coil 11. Specifically, as shown... Figures 3-5As shown, in each radial limiting assembly 4, the support member 400 is configured as an arc-shaped plate structure extending circumferentially along the coil frame 10. The support member 400 can be fixedly connected to the ends of the end plates 2 at both ends of each coil frame 10 in the radial direction of the coil frame 10, or it can be provided with bent portions parallel to the end plates 2 at both ends, with the bent portions superimposed on the end plates 2 and connected by fasteners. The push member 41 and the pre-tightening member 420 are both configured as arc-shaped plates extending circumferentially and axially along the coil frame 10. The contact area between the arc-shaped plate and the outer peripheral surface of the high-temperature superconducting coil 11 is large, which can evenly distribute and apply the clamping force to the high-temperature superconducting coil 11. Each pretensioner 420 has a plurality of radially extending recesses 4200 on the side of the high-temperature superconducting coil 11 facing away from it. The plurality of recesses 4200 are evenly spaced along the circumference of the coil frame 10. The opening of each recess 4200 faces the support member 400, and an elastic buffer member 421 is provided in each recess 4200. Each elastic buffer member 421 is configured as a plurality of disc springs 4210 stacked in the radial direction. The disc springs 4210 can withstand a large load in a short elastic deformation space, which is beneficial to optimize the structural layout and reduce the size of the radial limiting component 4. When multiple disc springs 4210 are used in a stacked manner, the surface friction between adjacent disc springs 4210 will quickly consume the impact energy, and the shock absorption effect is far superior to that of an undamped helical spring.

[0060] It should be noted that the number of radial limiting components 4 provided on the outer periphery of each high-temperature superconducting coil assembly 1 can be two, four, eight or more; the number of recesses 4200 on each pretensioner 420 can be two, three, five or more; the number of disc springs 4210 in each recess 4200 can be two, four, eight or more, which can be set by those skilled in the art as needed.

[0061] In one specific embodiment of this utility model, such as Figure 2 , Figure 3 and Figure 5 As shown, the cross-section of each support 400 is U-shaped, and the cross-section is the section of the support 400 perpendicular to its length direction, that is, the section tangent to the axial direction of the coil frame 10. The opening of the U-shaped structure faces the high-temperature superconducting coil 11 radially along the coil frame 10. The two side walls of the U-shaped structure partially overlap with the two end plates 2 on both sides of each coil frame 10 along the axial direction. The two side walls of the U-shaped structure and the two end plates 2 are fixedly connected by a plurality of second fasteners 6 (such as set screws) spaced apart along the circumference of the coil frame 10. Each second fastener 6 extends along the axial direction of the coil frame 10 and passes through the support 400 and the end plate 2. A step portion can be provided on each end plate 2, and the two side walls of the U-shaped structure are respectively stacked on the step portion, which can connect the support 400 and the end plate 2 without interfering with the mutual contact between the two adjacent end plates 2.

[0062] It should be noted that the second fasteners 6 that fix each support member 400 to the two adjacent end plates 2 can be two, four, eight or more.

[0063] In one specific embodiment of this utility model, at least two metal cooling plates 7a are provided around the outer periphery of each high-temperature superconducting coil 11 along the circumferential direction of the coil frame 10. Each metal cooling plate 7a is located between the high-temperature superconducting coil 11 and the pre-tightening member 420, serving as a buffer between the pre-tightening member 420 and the high-temperature superconducting coil 11 to prevent the pre-tightening member 420 from directly pressing onto the high-temperature superconducting coil 11. The metal cooling plate 7a is configured as an arc-shaped plate extending along the circumferential and axial directions of the coil frame 10, and is thermally connected to the high-temperature superconducting coil 11. Each metal cooling plate 7a also has a portion bent outward radially along the coil frame 10 at one end in the circumferential direction. This portion is connected to an external cold source (e.g., a refrigerator). The metal cooling plate 7a conducts the temperature of the external cold source to the high-temperature superconducting coil 11, making the surface temperature of the high-temperature superconducting coil 11 uniform. A partition 7b is provided between the two adjacent metal cooling plates 7a at their close ends. The insulating properties of the partition 7b can separate the adjacent metal cooling plates 7a, preventing the metal cooling plates 7a from forming an integral ring structure along the circumference of the coil frame 10, thereby avoiding the generation of eddy currents during the excitation process.

[0064] It should be noted that the number of metal cold-conducting plates 7a is the same as the number of radial limiting components 4, that is, each radial limiting component 4 is fitted with a metal cold-conducting plate 7a, and the part of the metal cold-conducting plate 7a connected to the cold source and the partition plate 7b can pass through between two adjacent radial limiting components 4.

[0065] Each high-temperature superconducting coil 11 is also insulated from adjacent components by an insulating assembly 8. When each high-temperature superconducting coil 11 includes multiple conductor layers 110 stacked along the axial direction, the insulating assembly 8 includes a first insulating layer 80, a second insulating layer 81, a third insulating layer 82, and a fourth insulating layer 83. A first insulating layer 80 is provided between two adjacent conductor layers 110. A second insulating layer 81 is provided between the inner circumferential surface of each conductor layer 110 and the outer circumferential surface of the coil frame 10. A third insulating layer 82 is provided between the outer circumferential surface of each conductor layer 110 and the metal cooling plate 7a. A fourth insulating layer 83 is provided on the side of each end plate 2 close to the conductor layer 110 along the axial direction of the coil frame 10. By setting the insulating assembly 8 (first insulating layer 80, second insulating layer 81, third insulating layer 82, and fourth insulating layer 83), each conductor layer 110 is insulated from adjacent components, ensuring that the current flows only along the conductor, avoiding unnecessary heat conduction, preventing short circuits, or delaying superheat diffusion, and protecting the safety of the high-temperature superconducting coil 11.

[0066] It should be noted that each high-temperature superconducting coil 11 may include two, three or more conductor layers 110; the insulating component 8 may be made of inorganic ceramic coating, glass fiber or epoxy resin composite material, etc.

[0067] In one specific embodiment of this utility model, such as Figure 1 As shown, the high-temperature superconducting coil structure also includes a cryogenic housing 9, which comprises a housing body 90 and a cover plate 91. The housing body 90 has an internal receiving cavity 900 with an opening from the top of the housing body 90. The receiving cavity 900 is an annular cavity. The cover plate 91 is adaptably configured as an annular plate structure and is fastened to the opening of the receiving cavity 900 by screws or other fasteners. The receiving cavity 900 is used to house multiple high-temperature superconducting coil assemblies 1, providing a cryogenic operating environment for the multiple high-temperature superconducting coil assemblies 1. Multiple high-temperature superconducting coil assemblies 1 are stacked and arranged within the housing cavity 900 along the height direction of the housing cavity 900. The stacking direction is parallel to the height direction of the housing cavity 900, that is, the height of the housing cavity 900 is parallel to the axis of each coil frame 10. The total height of the multiple high-temperature superconducting coil assemblies 1 stacked together is the same as the height of the housing cavity 900. When the cover plate 91 is fixed and pressed against the opening of the housing cavity 900, the cover plate 91 and the bottom wall of the housing cavity 900 limit the two ends of the multiple high-temperature superconducting coil assemblies 1 stacked together, thereby restricting the relative movement between the multiple high-temperature superconducting coil assemblies 1 along the axial direction and avoiding structural damage to the multiple high-temperature superconducting coil assemblies 1 when a pulsed large current passes through the high-temperature superconducting coil 11 and generates an extremely strong axial electromagnetic thrust.

[0068] In one specific embodiment of this utility model, such as Figure 1 and Figure 2As shown, a plurality of second limiting members 3b, spaced apart circumferentially along the coil skeleton 10, are provided between the cover plate 91 and the adjacent end plate 2. A plurality of second limiting members 3b, spaced apart circumferentially along the coil skeleton 10, are also provided between the bottom wall of the receiving cavity 900 and the adjacent end plate 2. By inserting the second limiting members 3b between the end plate 2 and the cover plate 91, and between the end plate 2 and the bottom wall of the receiving cavity 900, the relative rotation between the plurality of high-temperature superconducting coil assemblies 1 and the cover plate 91 in the circumferential direction of the coil skeleton 10, as well as the relative movement between the plurality of high-temperature superconducting coil assemblies 1 and the cover plate 91 in the radial and axial directions of the coil skeleton 10, can also limit the relative rotation between the plurality of high-temperature superconducting coil assemblies 1 and the shell body 90 in the circumferential direction of the coil skeleton 10, as well as the relative movement between the plurality of high-temperature superconducting coil assemblies 1 and the shell body 90 in the radial and axial directions of the coil skeleton 10. When a flange 21 is provided on one of the two adjacent end plates 2, since the two end plates 2 at both ends in the height direction of the receiving cavity 900 do not have flanges, in order to improve the radial stability of the two end plates 2 adjacent to the cover plate 91 and the bottom wall of the receiving cavity 900 in the coil frame 10, a step portion 92 protruding along the axial direction of the coil frame 10 can be provided on the cover plate 91 and the receiving cavity 900, so that the step portion 92 abuts against the two end plates 2.

[0069] It should be noted that two, four, eight or more second limiting members 3b can be provided between the cover plate 91 and the adjacent end plate 2; two, four, eight or more second limiting members 3b can be provided between the bottom wall of the receiving cavity 900 and the adjacent end plate 2.

[0070] In summary, due to the extremely strong axial electromagnetic thrust, radial expansion force, and circumferential torsional force generated when a high-current pulse passes through a high-temperature superconducting coil, a single rigid frame support or simple potting fixation method can only achieve constraint in one direction. Under the action of high overload impact and strong electromagnetic force, the coil is prone to circumferential torsion, radial runout, and even problems such as strip tearing and insulation layer crushing. This leads to local stress concentration and temperature rise in the coil, causing superconducting failure. In severe cases, it can cause complete failure of the coil structure, resulting in distortion of the air gap magnetic field, affecting the thrust accuracy of the electromagnetic catapult, and further aggravating the structural damage of the coil, making it impossible to meet the high-frequency and high-reliability operation requirements of the electromagnetic catapult.

[0071] If the preload cannot be adaptively adjusted and the stress distribution is uneven, under the long-term action of pulsed alternating load and thermal cycling, the preload is prone to loosening or local overpressure, leading to fatigue damage to the high-temperature superconducting coil structure and reducing the service life and operational reliability of related equipment.

[0072] If the pre-tightening structure is independent of the coil frame and cooling structure, there will be problems of high structural redundancy and complex assembly. This will not only increase the overall weight and volume, but also affect the integration and heat dissipation efficiency of the superconducting magnet, making it difficult to meet the requirements of lightweight and miniaturized superconducting magnet equipment.

[0073] Therefore, in view of the fact that the high-temperature superconducting coil structure cannot be adapted to the extreme working conditions of high overload, strong impact and pulse alternating load of aerospace electromagnetic catapult, and has many problems such as insufficient overload resistance, uneven stress distribution, easy slippage and misalignment of coil, unreasonable pre-tightening structure, low structural integration and poor reliability, this utility model proposes a high overload pre-tightening high-temperature superconducting coil structure for electromagnetic catapult.

[0074] This invention sets the coil frame 10 as a split structure, and restricts the relative rotation of two adjacent high-temperature superconducting coil assemblies 1 in the circumferential direction of the coil frame 10 by end plates 2 on both sides of the axial direction of each coil frame 10 and the first limiting member 3a. Radial constraint is provided by the radial limiting member 4, and the height direction of the multiple high-temperature superconducting coil assemblies 1 is limited by the cryogenic container. Through the triple constraint structure of axial constraint, radial pre-tightening and circumferential anti-torsion guidance, it can effectively withstand the acceleration impact of 10g to 20g or more under the aerospace electromagnetic catapult condition and the action of strong pulse electromagnetic force, which significantly improves the structural stability of the coil in extreme mechanical environment and significantly enhances the resistance to high overload and strong impact.

[0075] The cryogenic container can also provide a cryogenic vacuum environment. The radial limiting component 4 can also adjust the preload, achieving a constant radial preload, which improves the fatigue life and long-term operational reliability of the coil under high-frequency pulse conditions. The high-overload preload high-temperature superconducting coil structure for electromagnetic catapults provided by this utility model uses multiple high-temperature superconducting coil components 1 in a modular stack, combined with segmented radial limiting components 4, and end plates 2, first limiting components 3a, and other components of the same specifications, for easy assembly and maintenance, high degree of engineering, convenient disassembly and assembly, and easy maintenance and replacement in the later stage. Such a high-temperature superconducting coil structure is not only suitable for aerospace electromagnetic catapult superconducting magnets, but can also be widely used in pulsed strong magnetic field devices, superconducting motors, superconducting energy storage magnets, aerospace high-overload electromagnetic equipment, etc., and has strong versatility and market application prospects.

[0076] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived from the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0077] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0078] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0079] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0080] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0081] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A high-overload preload high-temperature superconducting coil structure for electromagnetic catapults, characterized in that, The high-temperature superconducting coil structure includes: Multiple high-temperature superconducting coil assemblies are stacked together. Each high-temperature superconducting coil assembly includes a ring-shaped coil frame and a high-temperature superconducting coil wound around the outer periphery of the coil frame in the circumferential direction. Each coil frame is fixedly connected to end plates on both sides along its axial direction, and each high-temperature superconducting coil abuts against the end plates on both sides along the axial direction to limit the high-temperature superconducting coil in the axial direction through the end plates. At least one end plate is provided between two adjacent high-temperature superconducting coil assemblies; a plurality of first limiting members are also provided between two adjacent high-temperature superconducting coil assemblies at intervals along the circumference, each of the first limiting members passing through the end plate between the two adjacent high-temperature superconducting coil assemblies along the axial direction, so as to limit the relative rotation between the two adjacent high-temperature superconducting coil assemblies in the circumference and the relative movement in the radial direction of the coil frame.

2. The high overload preload high-temperature superconducting coil structure for electromagnetic catapults as described in claim 1, characterized in that, Two end plates are disposed between two adjacent high-temperature superconducting coil assemblies and are arranged opposite each other along the axial direction. The two end plates are fixedly connected to the coil skeleton of the adjacent high-temperature superconducting coil assembly. Multiple first limiting holes are respectively opened on the opposite sides of the two end plates and are distributed along the circumferential direction. The first limiting holes of the two end plates are arranged in pairs along the axial direction. Each first limiting member passes through the corresponding pair of first limiting holes along the axial direction to limit the relative rotation between the two end plates in the circumferential direction and the relative movement in the radial direction.

3. The high overload preload high-temperature superconducting coil structure for electromagnetic catapults as described in claim 2, characterized in that, Each of the end plates is annular and extends radially from the inside of the coil frame to the outside of the high-temperature superconducting coil, and each of the end plates is fixedly connected to the adjacent coil frame at one end near the coil frame along the radial direction. One of the two end plates opposite each other along the axial direction is provided with a flange at one end of the end plate near the coil frame along the radial direction. The flange extends along the axial direction toward the other end plate, and the other end plate abuts against the flange at one end of the end plate near the coil frame along the radial direction, so as to restrict the movement of the other end plate relative to one of the end plates along the radial direction by means of the flange.

4. The high overload preload high-temperature superconducting coil structure for electromagnetic catapults as described in claim 1, characterized in that, Each of the high-temperature superconducting coils is provided with a radial limiting component on its outer peripheral side. Each radial limiting component extends in the circumferential direction and is used to press the high-temperature superconducting coil against the outer peripheral surface of the coil frame along the radial direction. Each radial limiting assembly includes an adjusting component and a pushing component. The adjusting component includes a support component and a pre-tightening adjusting component. The support components are spaced apart on the outer periphery of the high-temperature superconducting coil and are fixedly connected to two end plates on both sides of the high-temperature superconducting coil along the axial direction. The pre-tightening adjusting component passes through the support component radially. The end of the pre-tightening adjusting component near the high-temperature superconducting coil is fixedly connected to the pushing component. The pre-tightening adjusting component can move radially relative to the support component to press the high-temperature superconducting coil against the outer periphery of the coil frame through the pushing component.

5. The high overload preload high-temperature superconducting coil structure for electromagnetic catapults as described in claim 4, characterized in that, Each of the radial limiting components further includes a pre-tightening component, which includes a pre-tightening member and an elastic buffer member. The pre-tightening member is disposed on the outer periphery of the high-temperature superconducting coil and presses the high-temperature superconducting coil against the outer periphery of the coil frame. The pre-tightening member has a recess extending radially on the side of the high-temperature superconducting coil that is radially away from it. The elastic buffer member is disposed in the recess, with one end of the elastic buffer member abutting against the bottom wall of the recess and the other end of the elastic buffer member abutting against the end of the pusher member near the high-temperature superconducting coil.

6. The high-overload preload high-temperature superconducting coil structure for electromagnetic catapults as described in claim 5, characterized in that, At least two radial limiting components are provided on the outer periphery of each of the high-temperature superconducting coil assemblies along the circumferential direction. In each radial limiting component, the support member is configured as an arc-shaped plate structure extending along the circumferential direction, and the pusher and the pre-tightening member are both configured as arc-shaped plates extending along the circumferential direction and the axial direction. Furthermore, each of the pretensioners has a plurality of recesses extending radially on the side of the high-temperature superconducting coil opposite to the radial direction, and the plurality of recesses are evenly spaced along the circumferential direction. Each of the elastic buffers is configured as a plurality of disc springs stacked in the radial direction.

7. The high overload preload high-temperature superconducting coil structure for electromagnetic catapults as described in claim 6, characterized in that, Each end plate is fixedly connected to the adjacent coil frame at one end along the radial direction near the coil frame by a plurality of first fasteners spaced along the circumferential direction. Each of the support members has a U-shaped cross-section, with the opening of the U-shaped structure facing the high-temperature superconducting coil along the radial direction. The two sidewalls of the U-shaped structure are fixedly connected to the two end plates on both sides of each coil skeleton along the axial direction by a plurality of second fasteners spaced apart along the circumferential direction. The cross-section is the section of the support member perpendicular to its length direction.

8. The high overload preload high-temperature superconducting coil structure for electromagnetic catapults as described in claim 1, characterized in that, At least two metal cooling plates are provided around the outer periphery of each high-temperature superconducting coil along the circumferential direction. The metal cooling plates are configured as arc-shaped plates extending along the circumferential direction and the axial direction, and the metal cooling plates are thermally connected to the high-temperature superconducting coil. A partition is provided between the two ends of two adjacent metal cooling plates in the circumferential direction that are close to each other. Each of the high-temperature superconducting coils includes multiple conductor layers stacked along the axial direction. A first insulating layer is provided between two adjacent conductor layers. A second insulating layer is provided between the inner circumferential surface of each conductor layer and the outer circumferential surface of the coil frame. A third insulating layer is provided between the outer circumferential surface of each conductor layer and the metal cooling plate. A fourth insulating layer is provided on the side of each end plate close to the conductor layer along the axial direction.

9. The high-overload preload high-temperature superconducting coil structure for electromagnetic catapults as described in any one of claims 1-8, characterized in that, The high-temperature superconducting coil structure also includes a low-temperature shell, which includes a shell body and a cover plate. The shell body has a receiving cavity inside. The plurality of high-temperature superconducting coil assemblies are arranged in the receiving cavity along the height direction of the receiving cavity, which is parallel to the axial direction. The cover plate is fixed along the axial direction and pressed against the opening of the receiving cavity to restrict relative movement between the plurality of high-temperature superconducting coil assemblies along the axial direction.

10. The high-overload preload high-temperature superconducting coil structure for electromagnetic catapults as described in claim 9, characterized in that, Multiple second limiting members are provided between the cover plate and the adjacent end plate, and between the bottom wall of the receiving cavity and the adjacent end plate, distributed at intervals along the circumference, to restrict the relative rotation of the multiple high-temperature superconducting coil assemblies and the low-temperature housing in the circumferential direction and the relative movement in the radial and axial directions.

Images