Enhanced electromagnetic projectile injection device for tokamak fracture relief

Abstract

The invention discloses a magnetic field enhanced electromagnetic launching device for relieving Tokamak fracture, and belongs to the technical field of electromagnetic track launching. The invention designs a magnetic field enhanced track structure aiming at the problems of how to enhance the electromagnetic force of a projectile, improve the speed of an armature, separate the projectile from the armature and the like. Comprising an electromagnetic acceleration track and an electromagnetic deceleration track which are arranged in parallel, the structures of the electromagnetic acceleration track and the electromagnetic deceleration track are in mirror symmetry, and each of the electromagnetic acceleration track and the electromagnetic deceleration track comprises a reinforced track and a through track; a through rail of the electromagnetic acceleration rail makes contact with an armature and is used for launching the armature, an enhancing rail is used for enhancing the in-chamber magnetic field intensity and increasing armature stress, and electromagnetic force is used for propelling the armature carrying the projectile to reach the set speed. A through rail of the electromagnetic speed reduction rail makes contact with the armature and is used for generating reverse acceleration through electromagnetic force to act on the armature so that the armature can be decelerated, and the reinforcing rail is used for enhancing the in-chamber magnetic field intensity, increasing armature stress and enabling the armature to be separated from the projectile.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic rail launch technology, and more specifically, to a magnetic field enhanced electromagnetic launch device for tokamak rupture relief. Background Art

[0002] The basic strategy of the current tokamak rupture mitigation system is to actively inject a large number of spallation pellets or impurity gas injection (such as neon, argon, deuterium, etc.) to generate strong enough radiation power to dissipate the energy of the plasma. Since the impurity propulsion principle of the above two devices is the pneumatic propulsion of high-pressure gas, the maximum speed of impurity injection depends on the gas sound speed of the propulsion gas, and due to the limited injection speed, it may not be possible to inject impurities into the plasma core within the time required for rupture mitigation, which will greatly affect its rupture mitigation effect.

[0003] Based on the principle of electromagnetic rail launch, an electromagnetic projectile injection device is designed. The armature is driven by electromagnetic force, which is not limited by the speed of sound of the propulsion gas of the gas propulsion type, so that it can carry the projectile and inject it into the plasma at a speed exceeding 1km / s, far exceeding the upper limit of the speed of sound of traditional impurity injection. However, for conventional electromagnetic launch devices, a very large current is required to reach the expected speed. Therefore, this magnetic field enhanced electromagnetic projectile injection device can provide a greater electromagnetic force at a lower current, so that the projectile can reach a higher speed, so it can better meet the needs of Tokamak fusion reactor rupture mitigation at a lower current. Summary of the invention

[0004] In view of the above defects or improvement needs of the prior art, the purpose of the present invention is to achieve high-speed electromagnetic projectile launching and to enhance the electromagnetic force on the armature as much as possible, thereby increasing the launching speed, so as to respond quickly and launch projectiles at high speed to achieve rapid shutdown when the tokamak ruptures.

[0005] To achieve the above-mentioned purpose, the present invention provides a magnetic field enhanced electromagnetic launch device for tokamak rupture mitigation, comprising an electromagnetic acceleration track and an electromagnetic deceleration track arranged in parallel, wherein the structures of the electromagnetic acceleration track and the electromagnetic deceleration track are mirror-symmetrical, and both comprise an enhancement rail and a through rail; the through rail of the electromagnetic acceleration track contacts the armature and is used to launch the armature, and the enhancement rail is used to enhance the magnetic field strength in the bore, increase the force on the armature, and use the electromagnetic force to propel the armature carrying the projectile to a set speed; the through rail of the electromagnetic deceleration track contacts the armature and is used to use the electromagnetic force to generate a reverse acceleration acting on the armature, so that the armature decelerates, and the enhancement rail is used to enhance the magnetic field strength in the bore, increase the force on the armature, and separate the armature from the projectile.

[0006] The armature carries the impurity projectile in the acceleration section and reaches a higher speed through electromagnetic force, then enters the deceleration section. At this time, the acceleration power supply discharges energy, and the deceleration power supply is introduced at the tail end of the device. The electromagnetic force opposite to the acceleration decelerates the armature. At this time, the projectile speed remains unchanged and separates from the armature.

[0007] Furthermore, the electromagnetic acceleration track includes an upper busbar of the acceleration section, an upper reinforcement rail of the acceleration section, an upper through rail of the acceleration section, a short-circuit block of the acceleration section, a lower through rail of the acceleration section, a lower reinforcement rail of the acceleration section, and a lower busbar of the acceleration section. The upper busbar of the acceleration section is connected to the positive pole of the power supply, the head end of the upper reinforcement rail of the acceleration section is connected to the upper busbar of the acceleration section, the tail end of the upper reinforcement rail of the acceleration section is connected to the tail end of the lower reinforcement rail of the acceleration section through the short-circuit block of the acceleration section, the head end of the lower reinforcement rail of the acceleration section is connected to the head end of the upper through rail of the acceleration section through the short-circuit block of the acceleration section, the upper through rail of the acceleration section passes through the armature and the lower through rail of the acceleration section to form a loop, the head end of the lower through rail of the acceleration section is connected to the lower busbar of the acceleration section, and the lower busbar of the acceleration section is connected to the negative pole of the power supply, so that current flows in from the upper busbar and flows out from the lower busbar, and forms a loop with the armature through the above-mentioned track connection method.

[0008] Furthermore, the electromagnetic acceleration track also includes an acceleration section electrode block, the through hole of the electrode block is used to connect the power supply wire, the acceleration section electrode block includes an acceleration section positive electrode block and an acceleration section negative electrode block, the acceleration section positive electrode block is connected and fixed to the acceleration section upper bus by bolts, and the acceleration section negative electrode block is connected and fixed to the acceleration section lower bus by bolts.

[0009] Furthermore, it also includes an accelerating section bus insulating plate, an accelerating section insulating gasket, an accelerating section insulating support tube, an accelerating section bus pad, an accelerating section insulating support plate, and an accelerating section insulating cover plate. The accelerating section upper through rail and the accelerating section upper reinforced rail, and the accelerating section lower through rail and the accelerating section lower reinforced rail are insulated by the accelerating section insulating gasket; the accelerating section bus insulating plate is connected to the accelerating section bus through two middle screw holes; the two ends of the accelerating section insulating support tube pass through two screw holes on the edge of the accelerating section bus insulating plate, and the accelerating section bus is supported by long bolts; the accelerating section bus pad is located below the accelerating section lower bus to isolate the accelerating section lower bus, and the accelerating section insulating support plate is located on both sides of the accelerating section lower through rail and the accelerating section upper through rail, and its convex groove separates the accelerating section lower through rail from the accelerating section upper through rail, leaving a gap between the two rails; the accelerating section insulating cover plate is located above the accelerating section upper reinforced rail.

[0010] Furthermore, the electromagnetic deceleration track includes an upper busbar of the deceleration section, an upper reinforcement rail of the deceleration section, an upper through rail of the deceleration section, a short-circuit block of the deceleration section, a lower through rail of the deceleration section, a lower reinforcement rail of the deceleration section, and a lower busbar of the deceleration section. The upper busbar of the deceleration section of the deceleration section is connected to the positive pole of the power supply, the head end of the upper reinforcement rail of the deceleration section is connected to the upper busbar of the deceleration section, the tail end of the upper reinforcement rail of the deceleration section is connected to the tail end of the lower reinforcement rail of the deceleration section through the short-circuit block of the deceleration section, the head end of the lower reinforcement rail of the deceleration section is connected to the head end of the upper through rail of the deceleration section through the short-circuit block of the deceleration section, the upper through rail of the deceleration section passes through the armature and the lower through rail of the deceleration section to form a loop, the head end of the lower through rail of the deceleration section is connected to the lower busbar of the deceleration section, and the lower busbar of the deceleration section is connected to the negative pole of the power supply, so that current flows in from the upper busbar and flows out from the lower busbar, and forms a loop with the armature through the above-mentioned track connection method.

[0011] Furthermore, the electromagnetic deceleration track also includes a deceleration section electrode block, the through hole of the electrode block is used to connect the power supply wire, the deceleration section electrode block includes a deceleration section positive electrode block and a deceleration section negative electrode block, the deceleration section positive electrode block is connected and fixed to the upper bus of the deceleration section by bolts, and the deceleration section negative electrode block is connected and fixed to the lower bus of the deceleration section by bolts.

[0012] Further, the deceleration section busbar insulation plate, deceleration section insulation gasket, deceleration section insulation support tube, deceleration section busbar pad, deceleration section insulation support plate, deceleration section insulation cover plate, the deceleration section upper through rail and the deceleration section upper reinforced rail, the deceleration section lower through rail and the deceleration section lower reinforced rail are insulated by the deceleration section insulation gasket; the deceleration section busbar insulation plate is connected to the deceleration section busbar through two screw holes in the middle; the two ends of the deceleration section insulation support tube pass through two screw holes on the edge of the deceleration section busbar insulation plate, and the deceleration section busbar is supported by long bolts; the deceleration section busbar pad is located below the deceleration section lower busbar, isolating the deceleration section lower busbar, the deceleration section insulation support plate is located on both sides of the deceleration section lower through rail and the deceleration section upper through rail, and its convex groove separates the acceleration section lower through rail from the acceleration section upper through rail, leaving a gap between the two rails; the deceleration section insulation cover plate is located above the deceleration section upper reinforced rail.

[0013] Furthermore, the materials of the acceleration section upper reinforced rail, acceleration section upper through rail, acceleration section upper busbar, acceleration section lower busbar, deceleration section upper reinforced rail, deceleration section upper through rail, deceleration section upper busbar and deceleration section lower busbar are copper. The armature is aluminum.

[0014] Furthermore, the insulating support plate is divided into two types, left and right, which are mirror-symmetrical and function to clamp the rail so that the rail can withstand a certain impact force and maintain structural stability and good electrical contact when the energized armature moves.

[0015] Furthermore, the insulating cover plate is a rectangular flat plate structure, using a resin with a relatively large mass, covering the upper reinforcing rail from above, and can fix the insulation and the rail at the same time, making the structure stable.

[0016] Due to the magnetic field enhancement design concept adopted by the present invention, the device loop has a larger inductance gradient, which enhances the electromagnetic force on the armature. Compared with the traditional electromagnetic launch device with only a track-armature loop, the armature is subjected to the same electromagnetic force, and the current passed through the track is reduced, thereby reducing the ablation of the track and improving the life of the device. At the same time, the total length of the track can be appropriately reduced, and the tokamak device system can be better coordinated.

[0017] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0018] Compared with the existing rupture mitigation injection device, the electromagnetic projectile injection device has a higher expected injection speed, which should allow the radiation payload to penetrate deeper into the plasma in the tokamak. The higher injection speed can make the deposition position of the projectile closer to the core, while increasing the particle assimilation rate and increasing the density of the core plasma, which has a positive effect on the radiation of plasma internal energy and the dissipation of escaped electrons. Compared with other electromagnetic projectile injection devices, the biggest feature of this device is the use of a magnetic field enhancement structure. The peripheral enhancement track can double the magnetic field strength in the chamber, greatly increasing the electromagnetic force on the armature. At the same time, it is a front-to-back symmetrical structure, maximizing the use of space. The oblong hole design in the middle of the left and right insulating support plates has the function of removing impurities, increasing the heat dissipation of the track, and reducing the ablation of Joule heat. Third, this oblong hole is convenient for installing magnetic probes to better detect the real-time data of the armature in orbit. During the armature launch process, since the armature tail will be subjected to a force perpendicular to the track direction, it is easy to form uneven contact. The present invention uses an insulating support plate to connect with the external insulating cover plate bolts, and at the same time, the inner and outer rails are pressed by through bolts to ensure the stability of the rail electrical parameters. During the launch process, only the through rail is in direct contact with the armature. There is no need to replace the enhanced rail, which reduces the system maintenance workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an enhanced electromagnetic projectile injection device according to an embodiment of the present invention;

[0020] Figure 2 This is the principle diagram of the enhanced electromagnetic projectile injection device of the present invention:

[0021] Figure 3 This is a track structure of an enhanced electromagnetic projectile injection device according to an embodiment of the present invention:

[0022] Figure 4 This is the installation position diagram of the components of the present invention:

[0023] Figure 5 The overall structure of the insulation support plate:

[0024] Figure 6 This is a front view of the enhanced electromagnetic projectile injection device of the present invention:

[0025] In all the drawings, the same reference numerals are used to represent the same elements or structures, among which: 1. busbar insulation plate, 2. upper reinforcement rail, 3. upper through rail, 4. insulating gasket, 5. upper busbar, 6. positive electrode pressing block, 7. insulating support tube, 8. negative electrode pressing block, 9. busbar pad, 10. short-circuit block, 11. insulating support plate, 12. armature inlet, 13. lower through rail, 14. lower busbar, 15. insulating cover plate, 16. lower reinforcement rail. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not used to limit the scope of the present invention. In the descriptions of "connection" and "connected" in the present invention, they are all fixed by bolts. Insulators are connected by insulating bolts, and conductors are connected by ordinary bolts. "Coupling" means that the two parts can be in close contact with each other without leaving gaps, so as to achieve structural stability.

[0028] The contents involved in the above embodiment are described below in conjunction with a preferred embodiment.

[0029] The embodiment of the present invention provides an enhanced electromagnetic projectile injection device, referring to Figure 1The electromagnetic projectile injection device includes an electromagnetic acceleration track and an electromagnetic deceleration track arranged in parallel. The structures of the electromagnetic acceleration track and the electromagnetic deceleration track are mirror-symmetrical, and both include an enhancement track and a through track. The through track of the electromagnetic acceleration track contacts the armature and is used to launch the armature. The enhancement track is used to enhance the magnetic field strength in the chamber, increase the force on the armature, and use the electromagnetic force to propel the armature carrying the projectile to a set speed. The through track of the electromagnetic deceleration track contacts the armature and is used to use the electromagnetic force to generate a reverse acceleration on the armature, so that the armature is decelerated. The enhancement track is used to enhance the magnetic field strength in the chamber, increase the force on the armature, and separate the armature from the projectile. The through track contacts the armature and is used to launch the armature. The enhancement track enhances the magnetic field strength in the chamber and increases the force on the armature. The front and rear structures are mirror-symmetrical, so that the armature is decelerated in the second half to separate the armature from the projectile. The confluence component is used for the channel connecting the power supply and the track, and plays a role in power transmission. The insulating component is used for insulation and fixation between the tracks, so that the tracks are not in contact with each other, while ensuring the stable structure of the track.

[0030] Furthermore, the electromagnetic acceleration track includes an upper busbar of the acceleration section, an upper reinforcement rail of the acceleration section, an upper through rail of the acceleration section, a short-circuit block of the acceleration section, a lower through rail of the acceleration section, a lower reinforcement rail of the acceleration section, and a lower busbar of the acceleration section. The upper busbar of the acceleration section is connected to the positive pole of the power supply, the head end of the upper reinforcement rail of the acceleration section is connected to the upper busbar of the acceleration section, the tail end of the upper reinforcement rail of the acceleration section is connected to the tail end of the lower reinforcement rail of the acceleration section through the short-circuit block of the acceleration section, the head end of the lower reinforcement rail of the acceleration section is connected to the head end of the upper through rail of the acceleration section through the short-circuit block of the acceleration section, the upper through rail of the acceleration section passes through the armature and the lower through rail of the acceleration section to form a loop, the head end of the lower through rail of the acceleration section is connected to the lower busbar of the acceleration section, and the lower busbar of the acceleration section is connected to the negative pole of the power supply, so that current flows in from the upper busbar and flows out from the lower busbar, and forms a loop with the armature through the above-mentioned track connection method.

[0031] Furthermore, the electromagnetic acceleration track also includes an acceleration section electrode block, the through hole of the electrode block is used to connect the power supply wire, the acceleration section electrode block includes an acceleration section positive electrode block and an acceleration section negative electrode block, the acceleration section positive electrode block is connected and fixed to the acceleration section upper bus by bolts, and the acceleration section negative electrode block is connected and fixed to the acceleration section lower bus by bolts.

[0032] Furthermore, it also includes an accelerating section bus insulating plate, an accelerating section insulating gasket, an accelerating section insulating support tube, an accelerating section bus pad, an accelerating section insulating support plate, and an accelerating section insulating cover plate. The accelerating section upper through rail and the accelerating section upper reinforced rail, and the accelerating section lower through rail and the accelerating section lower reinforced rail are insulated by the accelerating section insulating gasket; the accelerating section bus insulating plate is connected to the accelerating section bus through two middle screw holes; the two ends of the accelerating section insulating support tube pass through two screw holes on the edge of the accelerating section bus insulating plate, and the accelerating section bus is supported by long bolts; the accelerating section bus pad is located below the accelerating section lower bus to isolate the accelerating section lower bus, and the accelerating section insulating support plate is located on both sides of the accelerating section lower through rail and the accelerating section upper through rail, and its convex groove separates the accelerating section lower through rail from the accelerating section upper through rail, leaving a gap between the two rails; the accelerating section insulating cover plate is located above the accelerating section upper reinforced rail.

[0033] Furthermore, the electromagnetic deceleration track includes an upper busbar of the deceleration section, an upper reinforcement rail of the deceleration section, an upper through rail of the deceleration section, a short-circuit block of the deceleration section, a lower through rail of the deceleration section, a lower reinforcement rail of the deceleration section, and a lower busbar of the deceleration section. The upper busbar of the deceleration section of the deceleration section is connected to the positive pole of the power supply, the head end of the upper reinforcement rail of the deceleration section is connected to the upper busbar of the deceleration section, the tail end of the upper reinforcement rail of the deceleration section is connected to the tail end of the lower reinforcement rail of the deceleration section through the short-circuit block of the deceleration section, the head end of the lower reinforcement rail of the deceleration section is connected to the head end of the upper through rail of the deceleration section through the short-circuit block of the deceleration section, the upper through rail of the deceleration section passes through the armature and the lower through rail of the deceleration section to form a loop, the head end of the lower through rail of the deceleration section is connected to the lower busbar of the deceleration section, and the lower busbar of the deceleration section is connected to the negative pole of the power supply, so that current flows in from the upper busbar and flows out from the lower busbar, and forms a loop with the armature through the above-mentioned track connection method.

[0034] Furthermore, the electromagnetic deceleration track also includes a deceleration section electrode block, the through hole of the electrode block is used to connect the power supply wire, the deceleration section electrode block includes a deceleration section positive electrode block and a deceleration section negative electrode block, the deceleration section positive electrode block is connected and fixed to the upper bus of the deceleration section by bolts, and the deceleration section negative electrode block is connected and fixed to the lower bus of the deceleration section by bolts.

[0035] Further, the deceleration section busbar insulation plate, deceleration section insulation gasket, deceleration section insulation support tube, deceleration section busbar pad, deceleration section insulation support plate, deceleration section insulation cover plate, the deceleration section upper through rail and the deceleration section upper reinforced rail, the deceleration section lower through rail and the deceleration section lower reinforced rail are insulated by the deceleration section insulation gasket; the deceleration section busbar insulation plate is connected to the deceleration section busbar through two screw holes in the middle; the two ends of the deceleration section insulation support tube pass through two screw holes on the edge of the deceleration section busbar insulation plate, and the deceleration section busbar is supported by long bolts; the deceleration section busbar pad is located below the deceleration section lower busbar, isolating the deceleration section lower busbar, the deceleration section insulation support plate is located on both sides of the deceleration section lower through rail and the deceleration section upper through rail, and its convex groove separates the acceleration section lower through rail from the acceleration section upper through rail, leaving a gap between the two rails; the deceleration section insulation cover plate is located above the deceleration section upper reinforced rail.

[0036] Furthermore, the materials of the acceleration section upper reinforced rail, acceleration section upper through rail, acceleration section upper busbar, acceleration section lower busbar, deceleration section upper reinforced rail, deceleration section upper through rail, deceleration section upper busbar and deceleration section lower busbar are copper. The armature is aluminum.

[0037] Figure 2 This is the schematic diagram of the enhanced electromagnetic projectile injection. The dotted lines show the acceleration and deceleration at the front and rear ends of the whole. The track connection is shown in the figure. The rectangular strips represent the tracks. The wire bundles on the left and right ends represent the power supply and bus. The polarity of the power supply is also shown in the figure. The black arrow is the direction of current flow. The middle rectangle is the armature. The armature is made of aluminum, has good conductivity and small mass.

[0038] Figure 3 This is the structure diagram of the electromagnetic acceleration track. The head end of the upper enhancement rail 2 is connected to the positive pole of the power supply; the tail end is connected to the tail end of the lower enhancement rail 16 through the short-circuit block 10; the head end of the lower enhancement rail 16 is connected to the head end of the upper through rail 3 through the short-circuit block 10; it is connected to the lower through rail 13 through the armature; the head end of the lower through rail 13 is connected to the negative pole of the power supply to form a loop, and the electromagnetic deceleration track is the same.

[0039] Figure 4 This is the installation location diagram of the components. Figure 3 Based on the track structure diagram, the upper bus 5 presses the head end of the upper reinforcement rail 2, and the positive electrode pressing block 6 is connected to the upper bus 5; similarly, the lower bus 14 presses the lower through rail 13 and is connected to the negative electrode pressing block 8; the insulating support tube 7 separates the two buses; the insulating support plate 11 clamps the track to fix it.

[0040] Insulation support plate 11 such as Figure 5As shown, there are several oblong holes on the side in contact with the track, the main function is to discharge ablated impurities, dissipate heat, and facilitate the installation of the magnetic probe. There are 3 large bolts and 10 small bolts evenly and alternately distributed above the magnetic probe to fix it with the insulating cover plate 15. At the same time, there are two grooves at the head end of the insulating support plate 11, which can just couple with the head end of the upper and lower through rails to clamp the two tracks tightly together. Figure 4 This is the insulating support plate for the acceleration section. The deceleration section is exactly the same as it, connected in a mirror image and with the tail ends aligned.

[0041] Furthermore, the insulating support plate is composed of two aspects, such as Figure 5 The larger skeleton shown is the support plate body, with thin insulating ceramic blocks on the outside, each of which has a large oblong hole aligned with the support plate body. At the same time, there are small oblong holes at the four corners of each large oblong hole, which are fixed by insulating bolts. The insulating ceramic blocks are in contact with the track and the armature, and the friction is small, which facilitates the sliding of the armature.

[0042] On the basis of the above example, further, the insulating cover plate 15 is a flat rectangle on the top and has a rectangular groove on the bottom, which is the same size as the upper reinforcement rail. It covers the upper reinforcement rail from above and is coupled with it in close contact. At the same time, it is connected to the left and right insulation support plates by insulating bolts for fixation.

[0043] The busbar insulation plate 1 is fixed on the upper busbar 5 by insulating bolts in order to keep the busbar stable and not loose. It is also connected to the outer metal shell and fixed to the external protective structure.

[0044] Furthermore, the working power supply is capacitor discharge. First, the charger sets the power supply voltage to a rated value, triggers the crystal box tube through the computer, connects the power supply wire to the electrode block, discharges through the electrode block, and after the acceleration stage is completed, turns on the energy dissipation module to discharge the remaining energy of the capacitor, and turns on the acceleration stage power supply to decelerate the armature. The maximum capacitor voltage exceeds 5000V, and the input current exceeds 120KA. The thickness of the short-circuit block and the busbar exceeds 8mm.

[0045] Furthermore, the upper busbar 5 and the lower busbar 14 have four through holes extending from front to back. The through holes are connected to the positive electrode pressing block 6 and the negative electrode pressing block 8 by bolts. Each pole has two pressing blocks, which are symmetrically connected to the left and right sides of the busbar, respectively, to disperse the current and reduce the load of the busbar. At the same time, the bolts can also allow the electrode pressing blocks to clamp the power supply wires. The busbar has two through holes extending from top to bottom, so that the busbar is fixed to the busbar insulation plate 1.

[0046] Furthermore, the positive electrode block 6 and the negative electrode block 8 are both two semi-symmetrical structures, with a larger through hole in the middle of the upper part for clamping the power supply wire, and two through holes on the side for connecting the two half electrode blocks with bolts, so that the upper through holes and the wires are clamped, so that the power supply is smoothly connected to the bus through the electrode blocks.

[0047] The armature entrance 12 is a slope type, that is, there is a 10° slope type at the armature entrance at the head end of the upper through rail 3 and the lower through rail 13, which is called the transition track. The transition track is connected to the electromagnetic acceleration track mouth, and a step for limiting is provided inside to make it easier for the armature to enter the track. Each track has a rectangular structure at the beginning and end, and has two through holes, which are used to couple with the short-circuit block 10 to connect the guide rails to form a loop.

[0048] Furthermore, there are a total of 8 short-circuit blocks, 2 at each connection between tracks, in order to divert the current and prevent the short-circuit block from melting and causing the track circuit to be broken. The short-circuit block is a rectangular block with rounded edges. In order to minimize the resistance of the short-circuit block, the cross-sectional area is as large as possible.

[0049] Furthermore, the acceleration section and the deceleration section are mirror images. Figure 6 As shown, the structure of the deceleration section is similar to that of the acceleration section, and a recovery armature device can be placed at the armature outlet. The positive pole of the power supply of the deceleration section is connected to the lower bus bar, and the negative pole of the power supply is connected to the upper bus bar, in order to keep the magnetic field in the chamber always in phase.

[0050] The process of launching high-speed projectiles by an electromagnetic projectile injection device provided in this embodiment is as follows:

[0051] The armature is introduced into the armature entrance 12, passes through the transition track, and enters the interior of the through track. The charger is charged to make the acceleration power supply and the deceleration power supply reach a predetermined voltage. The deceleration voltage is lower than the acceleration voltage. Since there is friction inside the track, the electromagnetic force that decelerates the armature does not need to be too high, otherwise the armature will stop inside the track, which is inconvenient for the next use. The trigger time of each power supply is set by the computer, and the crystal box tube is used for triggering. The time interval between the acceleration and deceleration power supply triggers is in the order of ms. It is expected that the armature will start to decelerate when it passes the second half. After the armature exits, the power supply energy dissipation module is turned on, and the residual electric energy in the capacitor and the device is dissipated.

[0052] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic field enhanced electromagnetic launch device for tokamak rupture mitigation, characterized in that: It includes an electromagnetic acceleration track and an electromagnetic deceleration track arranged in parallel, the structures of the electromagnetic acceleration track and the electromagnetic deceleration track are mirror-symmetrical, and both include an enhancement track and a through track; the through track of the electromagnetic acceleration track contacts the armature and is used to launch the armature, and the enhancement track is used to enhance the magnetic field strength in the chamber, increase the force on the armature, and use electromagnetic force to propel the armature carrying the projectile to reach a set speed; The through rail of the electromagnetic deceleration track is in contact with the armature, and is used to use electromagnetic force to generate reverse acceleration on the armature, so that the armature decelerates. The enhancement rail is used to enhance the magnetic field strength in the chamber, increase the force on the armature, and separate the armature and the projectile.

2. The magnetic field enhanced electromagnetic launch device according to claim 1, characterized in that: The electromagnetic acceleration track comprises an upper busbar of the acceleration section, an upper reinforcement rail of the acceleration section, an upper through rail of the acceleration section, a short-circuit block of the acceleration section, a lower through rail of the acceleration section, a lower reinforcement rail of the acceleration section, and a lower busbar of the acceleration section. The upper busbar of the acceleration section is connected to the positive pole of the power supply, the head end of the upper reinforcement rail of the acceleration section is connected to the upper busbar of the acceleration section, the tail end of the upper reinforcement rail of the acceleration section is connected to the tail end of the lower reinforcement rail of the acceleration section through the short-circuit block of the acceleration section, the head end of the lower reinforcement rail of the acceleration section is connected to the head end of the upper through rail of the acceleration section through the short-circuit block of the acceleration section, the upper through rail of the acceleration section passes through the armature and the lower through rail of the acceleration section to form a loop, the head end of the lower through rail of the acceleration section is connected to the lower busbar of the acceleration section, and the lower busbar of the acceleration section is connected to the negative pole of the power supply, so that current flows in from the upper busbar and flows out from the lower busbar, and forms a loop with the armature through the above-mentioned track connection method.

3. The magnetic field enhanced electromagnetic launch device according to claim 2, characterized in that: The electromagnetic acceleration track also includes an acceleration section electrode block, the through hole of the electrode block is used to connect the power supply wire, the acceleration section electrode block includes an acceleration section positive electrode block and an acceleration section negative electrode block, the acceleration section positive electrode block is connected and fixed to the acceleration section upper bus by bolts, and the acceleration section negative electrode block is connected and fixed to the acceleration section lower bus by bolts.

4. The magnetic field enhanced electromagnetic transmitting device according to claim 2, characterized in that: It also includes an accelerating section bus insulating plate, an accelerating section insulating gasket, an accelerating section insulating support tube, an accelerating section bus pad, an accelerating section insulating support plate, and an accelerating section insulating cover plate. The accelerating section upper through rail and the accelerating section upper reinforced rail, and the accelerating section lower through rail and the accelerating section lower reinforced rail are insulated by the accelerating section insulating gasket; the accelerating section bus insulating plate is connected to the accelerating section bus through two middle screw holes; the two ends of the accelerating section insulating support tube pass through two screw holes on the edge of the accelerating section bus insulating plate, and the accelerating section bus is supported by long bolts; the accelerating section bus pad is located below the accelerating section lower bus to isolate the accelerating section lower bus, and the accelerating section insulating support plate is located on both sides of the accelerating section lower through rail and the accelerating section upper through rail, and its convex groove separates the accelerating section lower through rail from the accelerating section upper through rail, leaving a gap between the two rails; the accelerating section insulating cover plate is located above the accelerating section upper reinforced rail.

5. The magnetic field enhanced electromagnetic launch device according to claim 1, characterized in that: The electromagnetic deceleration track comprises an upper busbar of the deceleration section, an upper reinforcing rail of the deceleration section, an upper through rail of the deceleration section, a short-circuit block of the deceleration section, a lower through rail of the deceleration section, a lower reinforcing rail of the deceleration section, and a lower busbar of the deceleration section. The upper busbar of the deceleration section of the deceleration section is connected to the positive pole of the power supply, the head end of the upper reinforcing rail of the deceleration section is connected to the upper busbar of the deceleration section, the tail end of the upper reinforcing rail of the deceleration section is connected to the tail end of the lower reinforcing rail of the deceleration section through the short-circuit block of the deceleration section, the head end of the lower reinforcing rail of the deceleration section is connected to the head end of the upper through rail of the deceleration section through the short-circuit block of the deceleration section, the upper through rail of the deceleration section passes through the armature and the lower through rail of the deceleration section to form a loop, the head end of the lower through rail of the deceleration section is connected to the lower busbar of the deceleration section, and the lower busbar of the deceleration section is connected to the negative pole of the power supply, so that current flows in from the upper busbar and flows out from the lower busbar, and forms a loop with the armature through the above-mentioned track connection method.

6. The magnetic field enhanced electromagnetic transmitting device according to claim 5, characterized in that: The electromagnetic deceleration track also includes a deceleration section electrode pressing block, the through hole of the electrode pressing block is used to connect the power supply wire, the deceleration section electrode pressing block includes a deceleration section positive electrode pressing block and a deceleration section negative electrode pressing block, the deceleration section positive electrode pressing block is connected and fixed to the upper bus of the deceleration section by bolts, and the deceleration section negative electrode pressing block is connected and fixed to the lower bus of the deceleration section by bolts.

7. The magnetic field enhanced electromagnetic transmitting device according to claim 5, characterized in that: The deceleration section bus insulation plate, the deceleration section insulation gasket, the deceleration section insulation support tube, the deceleration section bus pad, the deceleration section insulation support plate, and the deceleration section insulation cover plate. The deceleration section upper through rail and the deceleration section upper reinforced rail, and the deceleration section lower through rail and the deceleration section lower reinforced rail are insulated by the deceleration section insulation gasket; the deceleration section bus insulation plate is connected to the deceleration section bus through two middle screw holes; the two ends of the deceleration section insulation support tube pass through two screw holes on the edge of the deceleration section bus insulation plate, and the deceleration section bus is supported by long bolts; the deceleration section bus pad is located below the deceleration section lower bus to isolate the deceleration section lower bus, the deceleration section insulation support plate is located on both sides of the deceleration section lower through rail and the deceleration section upper through rail, and its convex groove separates the acceleration section lower through rail from the acceleration section upper through rail, leaving a gap between the two tracks; the deceleration section insulation cover plate is located above the deceleration section upper reinforced rail.

8. The magnetic field enhanced electromagnetic launch device according to claim 2 or 5, characterized in that: The materials of the enhanced rail on the acceleration section, the through rail on the acceleration section, the upper busbar on the acceleration section, the lower busbar on the acceleration section, the enhanced rail on the deceleration section, the through rail on the deceleration section, the upper busbar on the deceleration section and the lower busbar on the deceleration section are copper.

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