Interpolated water-cooled magnet device for high-field hybrid magnet

Abstract

The invention discloses an internally-inserted water-cooled magnet device for a high-field hybrid magnet. The internally-inserted water-cooled magnet device comprises a container assembly and a magnet coil assembly arranged in the container assembly. The container assembly comprises an upper barrel assembly, a container end cover, a hydraulic machine assembly, a center pipe assembly, an inner supporting assembly, a middle barrel assembly, a lower barrel assembly and an electric connecting assembly. The hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water-cooled magnets, in particular to an interposed water-cooled magnet device for a high-field hybrid magnet. BACKGROUND

[0002] A strong magnetic field is an important extreme condition, which provides a special extreme environment for scientific research. The structure of a material and the transition process thereof in the strong magnetic field can be changed, which provides a new way and opens up a new space for the research of physics, chemistry, materials and biology. Because the higher the magnetic field strength is, the greater the change in the electron energy state of a material system is, and thus more peculiar phenomena appear, providing more opportunities for scientific innovation. Therefore, a steady-state strong magnetic field experimental device, as an effective method for obtaining a high magnetic field, has become an irreplaceable important means for carrying out front-line basic research in the fields of condensed matter physics, magnetism, material science, chemistry, life science and medicine.

[0003] A water-cooled magnet is a main experimental device of a steady-state strong magnetic field laboratory. The water-cooled magnet is an extreme condition experimental platform that is concerned due to the characteristics of high magnetic field strength, fast excitation speed and high experimental efficiency. The water-cooled magnet has a high magnetic field strength, and the highest magnetic field strength can reach more than 42T. The water-cooled magnet consumes power in the order of tens of megawatts, and removes a large amount of Joule heat through high-speed deionized cooling water to ensure the normal temperature of the magnet.

[0004] The water-cooled magnet is a device in which a plurality of water-cooled magnet coils are connected in parallel or in series to generate a magnetic field through a certain current. In the running process, the coils are in an extreme working state, and a large amount of heat and a strong electromagnetic force are generated. If the coils are not cooled in time and effectively, the coils will be instantly fused into a metal block. If the electromagnetic force is not effectively and reliably borne, the coil assembly will be misaligned, the coils will rotate in the container, and the connection and support components between the coils will be damaged, so that the device cannot run.

[0005] The Bitter type water-cooled magnet is completely different from the traditional solenoid in structure. To make the Bitter type water-cooled magnet, copper or copper alloy and insulating sheets are distributed in a large number of holes, and then hundreds or thousands of copper sheets are stacked to form a complete coil. A plurality of coils of different specifications form a magnet. The advantage of the magnet is that high-pressure deionized water quickly flows from the cooling holes, and the heat generated when the magnet is powered on can be quickly removed, so that the cooling effect is very good. At the same time, since the magnet coil is a whole structure, it has very strong mechanical properties. Therefore, the water-cooled magnet using this principle can achieve a magnetic field of 420,000 gauss.

[0006] A BITTER type water-cooled magnet can generate a magnetic field of 420,000 Gauss, and a superconducting magnet can generate a magnetic field of more than 2 million Gauss. However, to make a BITTER type water-cooled magnet rotate, a small power plant needs to be input, and if a higher magnetic field is needed, the energy needs to be doubled. At the same time, the performance of the existing materials has not met the requirements, and both the electrical conductivity and the mechanical properties are under great pressure. As for the superconducting magnet, the magnetic field is realized easily, and does not need to input too much energy, but the critical magnetic field is certain and cannot be exceeded. The water-cooled magnet and the superconducting magnet are combined to take advantages of each other, and the magnetic field is generated jointly, so that the efficiency is high and the effect is good, and the above is the concept of the hybrid magnet.

[0007] With the development of magnet technology, especially when the magnetic field strength reaches 38.5T or more, the compression force of the magnet coil is insufficient under the action of strong electromagnetic force, which causes the bit chip on the magnet coil to be misaligned, deformed or even damaged. SUMMARY

[0008] The technical problem to be solved by the present application is how to solve the problem of misalignment, deformation or even damage of the bit chip on the magnet coil due to insufficient compression force.

[0009] To solve the above technical problems, the present application provides the following technical solutions:

[0010] An interposed water-cooled magnet device for a high-field hybrid magnet, comprising a container assembly and a magnet coil assembly arranged inside the container assembly;

[0011] The container assembly comprises an upper cylinder assembly, a container end cover, a hydraulic machine assembly, a center pipe assembly, an inner support assembly, a middle cylinder assembly, a lower cylinder assembly and an electrical connection assembly. The container end cover is arranged at the top of the upper cylinder assembly, the inner ring of the container end cover is connected with the outer ring of the hydraulic machine assembly, the inner ring of the hydraulic machine assembly is connected with the top of the center pipe assembly, the top of the upper cylinder assembly is connected with the lower cylinder assembly through the middle cylinder assembly, the inner support assembly is arranged inside the upper cylinder assembly for supporting the magnet coil assembly and electrically connected with the magnet coil assembly, two electrical connection assemblies penetrate the middle cylinder assembly and are electrically connected with the inner support assembly through first conductive soft connecting pieces, and the middle cylinder assembly is provided with a mounting window;

[0012] The hydraulic machine assembly comprises a cylinder, a piston, a stop ring, an equalizing pad, a first force transmission stop ring, a first anti-rotation pin, a second force transmission stop ring, a second anti-rotation pin, a first force transmission column and a second force transmission column.

[0013] The hydraulic machine assembly can axially force the magnet coil assembly, improve the compression force of the magnet coil assembly, and increase the ability of the magnet coil assembly to resist the electromagnetic force, so as to solve the problems of the coil overheating and even melting, the coil stress exceeding the limit and the coil being torn and damaged due to the excessive radial expansion force of the coil.

[0014] Preferably, the first anti-rotation pin grooves are uniformly distributed on the cylinder, the first countersunk bolt connection holes are circumferentially arranged on the first force transmission stop ring, one end of the first anti-rotation pin is clamped in the first anti-rotation pin groove, and the other end is threadedly connected with the first countersunk bolt connection hole.

[0015] Preferably, the upper cylinder assembly comprises an upper cylinder outer cylinder, an upper cylinder inner cylinder, a filter screen, a first end ring, a second end ring and a third end ring.

[0016] The upper cylinder outer cylinder and the upper cylinder inner cylinder are arranged at intervals to form a double-layer structure with a first high-pressure water inlet cavity, the top of the upper cylinder inner cylinder is provided with a waist-shaped hole, so that the first high-pressure water inlet cavity is in communication with the inner cavity of the upper cylinder inner cylinder, the filter screen is arranged on the waist-shaped hole, the inner wall of the upper cylinder inner cylinder is solidified with an insulating layer, the double-layer structure is sealed and connected with a container end cover through the first end ring, the middle part of the inner wall of the upper cylinder inner cylinder is provided with the second end ring for fixing the outermost coil of the magnet coil assembly, the bottom of the double-layer structure is connected with the middle cylinder assembly through the third end ring, the third end ring is provided with an upper cylinder cooling water channel in communication with the first high-pressure water inlet cavity, the main body support plate for fixing the inner support assembly is connected at the center position of the third end ring, and a plurality of fan-shaped through holes arranged along the circumference are formed in the main body support plate.

[0017] The middle cylinder assembly comprises a middle cylinder outer cylinder, a middle cylinder inner cylinder, a middle cylinder upper end ring, a middle cylinder middle end ring, a high-pressure water inlet pipe, a low-pressure water outlet pipe, a middle cylinder lower end ring and a middle cylinder lower cover.

[0018] The outer cylinder and the inner cylinder are arranged at intervals to form a double-layer structure with a second high-pressure water inlet chamber. The top of the double-layer structure is sealed by the upper end ring of the middle cylinder and connected to the third end ring. The upper end ring of the middle cylinder is provided with a cooling water channel for the middle cylinder that communicates with the cooling water channel of the upper cylinder. The bottom of the double-layer structure is sealed by the middle end ring of the middle cylinder. The outer cylinder is provided with a high-pressure water inlet pipe, and the inner cylinder is provided with a low-pressure water outlet pipe. The inner cylinder is connected to the lower cylinder assembly through the lower end ring of the middle cylinder. The lower cover of the middle cylinder is sealed to the lower end ring of the middle cylinder to seal the inner cylinder. The electrical connection assembly passes through the outer cylinder and the inner cylinder in sequence and is electrically connected to the inner support assembly through the first conductive flexible connector.

[0019] The lower cylinder assembly is a metal cylinder, with the top of the metal cylinder connected to the lower end ring of the middle cylinder, and an installation inlet is provided on the side wall of the metal cylinder.

[0020] Preferably, the inner support assembly includes an inner support frame, a stop-insulating support plate, an anti-rotation stop-insulating frame, an electrical connection inlet, and an electrical connection outlet. The inner support frame has an I-shaped cross-section. The bottom of the inner support frame is fixed to the main support plate, and the stop-insulating support plate is fixed to the top of the inner support frame to support the magnet coil assembly. Multiple anti-rotation stop-insulating frames are spaced apart on the inner support frame along its height direction. One end of the electrical connection inlet is electrically connected to a set of first conductive flexible connectors, and the other end is electrically connected to the innermost coil of the magnet coil assembly. One end of the electrical connection outlet is electrically connected to another set of first conductive flexible connectors, and the other end is electrically connected to the outermost coil of the magnet coil assembly. Both the electrical connection inlet and the electrical connection outlet are connected to the anti-rotation stop-insulating frame. The inner support frame, the stop-insulating support plate, and the anti-rotation stop-insulating frame all have through-holes for cooling water.

[0021] The electrical connection assembly includes an electrode connector, electrodes, an insulating positioning plate, an insulating ring, and an insulating sealing plate;

[0022] The electrode connector passes through the outer cylinder and the inner cylinder of the middle cylinder and is fixed on the outer cylinder and the inner cylinder of the middle cylinder. An insulating ring is provided on the inner wall of the electrode connector. The electrode is fixed on the electrode connector by an insulating positioning plate and an insulating sealing plate and is electrically connected to the first conductive flexible connector after passing through the electrode connector.

[0023] The central tube assembly includes a central tube, an upper pressure ring, and a metal end cap. The central tube passes through the magnet coil assembly and the cylinder body. The central tube is insulated from the innermost coil. The upper inner ring of the cylinder body is sealed to the top of the central tube via the upper pressure ring. The bottom of the central tube is sealed to the inner support assembly via the metal end cap.

[0024] Preferably, the magnet coil assembly comprises six A coils, B coils, C coils, D coils, E coils, F coils, and a first electrical connector connected in series in the radial direction; one end of the first electrical connector is electrically connected to the innermost A coil, and the other end is electrically connected to the electrical connection lead-in; and the outermost F coil is electrically connected to the electrical connection lead-out.

[0025] The A coil and the B coil are insulated by an insulating cylinder assembly, and the B coil, the C coil, the D coil, the E coil, and the F coil are insulated by insulating cylinders.

[0026] The A coil and the B coil are electrically connected by an AB electrical connection plate, the B coil and the C coil are electrically connected by a BC electrical connection plate, the C coil and the D coil are electrically connected by a CD electrical connection plate, the D coil and the E coil are electrically connected by a DE electrical connection plate, and the E coil and the F coil are electrically connected by an EF electrical connection plate; the AB electrical connection plate is insulated and connected to the hydraulic machine assembly, and the BC electrical connection plate, the CD electrical connection plate, the DE electrical connection plate, and the EF electrical connection plate are connected to the container assembly through an anti-rotation insulation structure.

[0027] The anti-rotation insulation structure comprises an anti-rotation insulation plate, an anti-rotation metal cylinder, an anti-rotation metal threaded pin, and an anti-rotation insulation sleeve; the anti-rotation insulation plate is arranged between the anti-rotation metal cylinder and the corresponding electrical connection plate; one end of the anti-rotation metal cylinder away from the electrical connection plate is connected to the container assembly; the threaded section of the anti-rotation metal threaded pin is threadedly connected to the corresponding electrical connection plate; the other end of the anti-rotation metal threaded pin is sleeved with the anti-rotation insulation sleeve and inserted into the anti-rotation metal cylinder after penetrating the anti-rotation insulation plate, so that the anti-rotation metal threaded pin is insulated and connected to the anti-rotation metal cylinder.

[0028] Preferably, the insulating cylinder assembly is formed into a cylindrical structure by axially splicing a plurality of insulating sleeve cylinders; the inner wall and the outer wall of each insulating sleeve cylinder are provided with second convex ridges arranged along the length direction of the insulating sleeve cylinder; adjacent second convex ridges form a cooling water channel; the inner wall of each insulating sleeve cylinder is provided with a plurality of second positioning bosses along the length direction thereof; the outer side of the A coil is correspondingly provided with a clamping groove for clamping the second positioning bosses; and the thickness of the second convex ridges on the outer wall of the adjacent insulating sleeve cylinders decreases gradually from the middle to the two ends of the insulating cylinder assembly.

[0029] Preferably, the insulating cylinder assembly is formed into a cylindrical structure by circumferentially splicing a plurality of insulating sheets; the inner wall and the outer wall of each insulating sheet are provided with first convex ridges arranged along the length direction of the insulating sheet; the inner wall of each insulating sheet is provided with a first positioning boss at each end portion along the length direction thereof; the first positioning bosses on the adjacent insulating sheets are fitted to form a boss group; and the outer side of the A coil is correspondingly provided with a clamping groove for clamping the boss group.

[0030] Preferably, the A coil comprises an A magnet coil, an A coil end plate, an A coil upper electrode cylinder, an upper locking nut, an upper anti-loose screw, an A coil lower electrode cylinder, an insulating sleeve ring, a lower locking nut, a lower anti-loose nut, and an A coil transition connecting cylinder.

[0031] The upper and lower ends of the A magnet coil are connected to the A coil end plate. One end of the A coil upper electrode cylinder is connected to the upper end of the A coil end plate, and the other end is electrically connected to the B coil through the AB electrical connecting plate. The A coil upper electrode cylinder is further provided with the upper locking nut and the upper anti-loose screw from bottom to top, and the A coil upper electrode cylinder is electrically connected to the B coil through the upper locking nut and the upper anti-loose screw. One end of the first force transmission column away from the first force transmission stop ring is insulatively connected to the AB electrical connecting plate. One end of the A coil lower electrode cylinder is connected to the lower end of the A coil end plate, and the other end is connected to the A coil transition connecting cylinder. One end of the first electrical connecting piece is connected between the A coil transition connecting cylinder and the stop insulating support plate, and the other end is electrically connected to the electrical connection lead-in piece.

[0032] An insulating sleeve ring is further provided on the outer wall of the lower end of the A coil lower electrode cylinder. A lower locking nut and a lower anti-loose nut are provided outside the insulating sleeve ring. A plurality of A coil cooling channels are provided on the A coil end plate, the A coil upper electrode cylinder, and the A coil lower electrode cylinder.

[0033] A first limiting groove is provided on the circumferential outer wall of the A coil end plate. A second limiting groove is provided on the circumferential outer wall of the A coil upper electrode cylinder. A positioning groove is provided on the circumferential outer wall of the A coil lower electrode cylinder. The first limiting groove, the second limiting groove, and the positioning groove are connected to form a clamping groove of a clamping boss group. The groove bottom of the positioning groove is in contact with the bottom surface of the boss group for supporting the insulating sheet.

[0034] Preferably, the B coil comprises a B magnet coil, a B coil end plate, a B fixed rod, a B coil upper electrode cylinder, a second conductive soft connecting piece, and a B coil lower electrode cylinder.

[0035] The B magnet coil is fixed between the two groups of B coil end plates through the B fixed rod. One end of the B coil upper electrode cylinder is connected to the upper end of the B coil end plate, and the other end is electrically connected to the AB electrical connecting plate through the second conductive soft connecting piece. The B coil upper electrode cylinder is further electrically connected to the A coil upper electrode cylinder through the upper locking nut and the upper anti-loose screw. One end of the second force transmission column away from the second force transmission stop ring is insulatively connected to the B coil upper electrode cylinder after penetrating through the AB electrical connecting plate. One end of the B coil lower electrode cylinder is connected to the lower end of the B coil end plate, and the other end is electrically connected to the C coil through the BC electrical connecting plate. The BC electrical connecting plate is insulatively connected to the inner support assembly through the insulating anti-rotation structure. A plurality of B coil cooling channels are provided on the B coil end plate, the B coil upper electrode cylinder, and the B coil lower electrode cylinder.

[0036] Preferably, the C coil comprises a C magnet coil, a C coil end plate, a C fixed rod, a C coil upper electrode cylinder, and a C coil lower electrode cylinder.

[0037] The C magnet coil is fixed between the two groups of C coil end plates by the C fixing rod, one end of the C coil upper electrode cylinder is connected with the C coil end plate at the upper end, and the other end is electrically connected with the D coil through the CD electrical connection plate, one end of the C coil lower electrode cylinder is connected with the C coil end plate at the lower end, and the other end is electrically connected with the BC electrical connection plate, the CD electrical connection plate is connected with the container end cover through the insulation anti-rotation structure, and a plurality of C coil cooling channels are arranged on the C coil end plate, the C coil upper electrode cylinder and the C coil lower electrode cylinder.

[0038] The D coil includes a D magnet coil, a D coil end plate, a D fixing rod, a D coil upper electrode cylinder and a D coil lower electrode cylinder.

[0039] The D magnet coil is fixed between the two groups of D coil end plates by the D fixing rod, one end of the D coil upper electrode cylinder is connected with the D coil end plate at the upper end, and the other end is electrically connected with the CD electrical connection plate, one end of the D coil lower electrode cylinder is connected with the D coil end plate at the lower end, and the other end is electrically connected with the E coil through the DE electrical connection plate, and the DE electrical connection plate is connected with the support assembly through the insulation anti-rotation structure; a plurality of D coil cooling channels are arranged on the D coil end plate, the D coil upper electrode cylinder and the D coil lower electrode cylinder.

[0040] The E coil includes an E magnet coil, an E coil end plate, an E fixing rod and an EF electrical connection cylinder.

[0041] The E magnet coil is fixed between the two groups of E coil end plates by the E fixing rod, one end of the EF electrical connection cylinder is connected with the E coil end plate at the upper end, and the other end is electrically connected with the F coil through the EF electrical connection plate, the E coil end plate at the lower end of the E magnet coil is connected with the support assembly in an insulated manner, and the EF electrical connection plate is connected with the container end cover through the insulation anti-rotation structure; a plurality of E coil axial cooling channels are arranged on the E coil end plate.

[0042] The F coil includes an F magnet coil, an F coil end plate, an F fixing rod, an F transition electrical connection ring, an F lower insulation support anti-rotation cylinder and a reinforcing rod.

[0043] The F magnet coil is fixed between the two groups of F coil end plates by the F fixing rod, the F coil end plate at the upper end is electrically connected with the EF electrical connection plate, and the F coil end plate at the lower end is electrically connected with the electrical connection lead-out piece through the F transition electrical connection ring; the F coil end plate at the lower end is fixedly connected with the upper cylinder assembly through the F lower insulation support anti-rotation cylinder; a plurality of F coil axial cooling channels are arranged on the F coil end plate.

[0044] The F coil end plates at the upper end and the lower end are further connected with the end portions of the F magnet coil close to the F coil end plates through the reinforcing rod.

[0045] The F transition electrical connection ring is provided with a cutout in the axial direction of the F transition electrical connection ring, so that the F transition electrical connection ring is in a non-closed ring shape.

[0046] Compared with the prior art, the application has the beneficial effects that:

[0047] 1、The hydraulic machine assembly is arranged, axial force is applied to the magnet coil assembly, the compression force of the magnet coil assembly is improved, the ability of the magnet coil assembly to resist the electromagnetic force is increased, and the problems of the coil overheating and even melting, the coil stress exceeding the limit and the coil being torn and damaged due to the excessive radial expansion force of the coil are solved.

[0048] 2、In the application, only the first conductive soft connecting piece and the electrical connecting assembly are detached from the installation window, the container end cover is lifted, the liquid compression machine assembly, the center pipe assembly and the magnet coil assembly are lifted together with the container end cover, the magnet coil assembly is taken out from the superconducting magnet for maintenance, the external water pipe, the external electrical connecting equipment and the upper cylinder, the middle cylinder and the lower cylinder connected with the high-field hybrid magnet interposed water-cooled magnet device are not removed in the process of removing the magnet coil assembly, the removal and maintenance process is simple and fast, and the removal efficiency is improved.

[0049] 3、The segmented insulating cylinder assembly is arranged, the insulating cylinder assembly not only plays an insulating role, but also replaces the fixing rod to position the A coil, and the insulating pieces are sleeved on the outer wall of the A coil, so that the installation difficulty is greatly reduced and good tight assembly effect is achieved.

[0050] 4、The circumferential electromagnetic rotation force generated when the high-field hybrid magnet interposed water-cooled magnet device operates is hard connection transmission in the transmission process, the anti-rotation metal cylinder replaces the insulating anti-rotation piece structure of the insulating composite material in the prior art, the high strength of the metal of the anti-rotation metal cylinder is utilized to solve the problem of insufficient strength of the traditional structure, and the electrical connecting plate and the coil are prevented from being damaged.

[0051] 5、The electrical connection of the A coil and the B coil adopts two-way parallel technology, that is, the first conductive connection is achieved through the upper locking nut and the upper anti-loosening screw, and the second conductive connection is achieved through the second conductive soft connecting piece, so that larger current can be stably transmitted in a compact space, and the A coil and the B coil can be stably connected under the condition that the compression amount is different under the action of the electromagnetic force and the hydraulic pressure of the hydraulic machine assembly.

[0052] 6、The reinforcing rods are arranged to reinforce the two ends of the F magnet coil, enhance the stability of the two ends of the F magnet coil, and solve the problems of movement and misplacement of the end plate near the F coil during operation of the F coil.

[0053] 7. The F transition electric connection ring is provided with a notch along its axial direction, so that the F transition electric connection ring is in a non-closed ring shape, so that in the case of sudden power failure during the operation of the high-field hybrid magnet intercalated water-cooled magnet device, the instantaneous current does not flow in the non-closed F transition electric connection ring, thereby preventing damage to the F transition electric connection ring in the case of sudden power failure during the operation of the high-field hybrid magnet intercalated water-cooled magnet device.

[0054] 8. The insulation cylinder assembly is formed into a ring-shaped segmented cylindrical structure by axially splicing and combining a plurality of insulation sleeves, and the insulation sleeves are provided with a plurality of second convex ridges with decreasing thickness from the middle to both ends of the coil, so as to reserve sufficient buffer space for each section of the coil and avoid affecting the outer coil. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 It is a structure schematic view of the high-field hybrid magnet intercalated water-cooled magnet device in the embodiment one of the present application.

[0056] Figure 2 It is a structure schematic view of the container assembly in the embodiment one of the present application.

[0057] Figure 3 It is a structure schematic view of the upper cylinder assembly in the embodiment one of the present application.

[0058] Figure 4 It is a structure schematic view of the middle cylinder assembly in the embodiment one of the present application.

[0059] Figure 5 It is a structure schematic view of the hydraulic machine assembly in the embodiment one of the present application.

[0060] Figure 6 It is a structure schematic view of the hybrid magnet in the embodiment one of the present application.

[0061] Figure 7 It is a structure schematic view of the magnet coil assembly in the embodiment one of the present application.

[0062] Figure 8 It is a sectional view of the A coil and the B coil in the embodiment one of the present application.

[0063] Figure 9 It is a structure schematic view of the insulation cylinder assembly in the embodiment one of the present application.

[0064] Figure 10 It is a structure schematic view of the insulation sheet in the embodiment one of the present application.

[0065] Figure 11 It is an assembly view of the A coil and the B coil in the embodiment one of the present application.

[0066] Figure 12Figure 1 is a schematic diagram of the partial structure of the A coil and the B coil in the first embodiment of the present application;

[0067] Figure 13 Figure 2 is another schematic diagram of the partial structure of the A coil and the B coil in the first embodiment of the present application;

[0068] Figure 14 Figure 3 is a schematic diagram of the structure of the A coil end plate in the first embodiment of the present application;

[0069] Figure 15 Figure 4 is a schematic diagram of the structure of the first A coil upper electrode cylinder in the first embodiment of the present application;

[0070] Figure 16 Figure 5 is a schematic diagram of the structure of the second A coil upper electrode cylinder in the first embodiment of the present application;

[0071] Figure 17 Figure 6 is a schematic diagram of the structure of the first A coil lower electrode cylinder in the first embodiment of the present application;

[0072] Figure 18 Figure 7 is a schematic diagram of the structure of the second A coil lower electrode cylinder in the first embodiment of the present application;

[0073] Figure 19 Figure 8 is a schematic diagram of the structure of the insulation anti-rotation structure in the first embodiment of the present application;

[0074] Figure 20 Figure 9 is an assembly diagram of the insulation anti-rotation structure and the BC electric connection plate in the first embodiment of the present application;

[0075] Figure 21 Figure 10 is a schematic diagram of the structure of the B coil end plate in the first embodiment of the present application;

[0076] Figure 22 Figure 11 is a schematic diagram of the structure of the first B coil upper electrode cylinder in the first embodiment of the present application;

[0077] Figure 23 Figure 12 is a schematic diagram of the structure of the second B coil upper electrode cylinder in the first embodiment of the present application;

[0078] Figure 24 Figure 13 is a schematic diagram of the structure of the first B coil lower electrode cylinder in the first embodiment of the present application;

[0079] Figure 25 Figure 14 is a schematic diagram of the structure of the second B coil lower electrode cylinder in the first embodiment of the present application;

[0080] Figure 26 Figure 15 is a schematic diagram of the structure of the C coil in the first embodiment of the present application;

[0081] Figure 27 Figure 16 is a schematic diagram of the structure of the C coil end plate in the first embodiment of the present application;

[0082] Figure 28 Figure 3 is a schematic view of the structure of the upper electrode cylinder of the C coil in the first embodiment of the present application;

[0083] Figure 29 Figure 4 is a schematic view of the structure of the lower electrode cylinder of the C coil in the first embodiment of the present application;

[0084] Figure 30 Figure 5 is a schematic view of the structure of the E coil in the first embodiment of the present application;

[0085] Figure 31 Figure 6 is a schematic view of the structure of the end plate of the E coil in the first embodiment of the present application;

[0086] Figure 32 Figure 7 is a schematic view of the structure of the F coil in the first embodiment of the present application;

[0087] Figure 33 Figure 8 is a schematic view of the structure of the end plate of the F coil in the first embodiment of the present application;

[0088] Figure 34 Figure 9 is a schematic view of the structure of the F magnet coil in the first embodiment of the present application;

[0089] Figure 35 Figure 10 is a schematic view of the structure of the F transition electric connection ring in the first embodiment of the present application;

[0090] Figure 36 Figure 11 is a schematic view of the structure of the insulation cylinder assembly in the second embodiment of the present application;

[0091] Figure 37 Figure 12 is a top view of the insulation cylinder assembly in the second embodiment of the present application;

[0092] Figure 38 Figure 13 is a partial view of the insulation cylinder assembly in the second embodiment of the present application. DETAILED DESCRIPTION

[0093] In order to facilitate the understanding of the technical scheme of the present application by those skilled in the art, the technical scheme of the present application will be further described in conjunction with the drawings in the specification.

[0094] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection, or can be communication; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication or interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0095] In the present application, unless specifically and explicitly defined otherwise, the terms "first", "second" are used only for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless specifically and explicitly defined otherwise.

[0096] Embodiment one

[0097] Referring to Figure 1 The embodiment discloses an inner water-cooled magnet device for high-field hybrid magnet, which comprises a container assembly 1 and a magnet coil assembly 2, and the magnet coil assembly 2 is located in the interior of the container assembly 1 and communicates with the container assembly 1.

[0098] Referring to Figure 2 The container assembly 1 comprises an upper cylinder assembly 11, a container end cover 12, a hydraulic machine assembly 13, a central pipe assembly 14, an inner support assembly 15, a middle cylinder assembly 16, a lower cylinder assembly 17, an electric connection assembly 18 and a first conductive soft connecting piece 19. The container end cover 12 is arranged on the top of the upper cylinder assembly 11, the inner ring of the container end cover 12 is connected with the outer ring of the hydraulic machine assembly 13, the inner ring of the hydraulic machine assembly 13 is connected with the top of the central pipe assembly 14, the top of the upper cylinder assembly 11 is connected with the lower cylinder assembly 17 through the middle cylinder assembly 16, the inner support assembly 15 is arranged in the interior of the upper cylinder assembly 11 and is used for supporting the magnet coil assembly 2 arranged in the interior of the upper cylinder assembly 11 and electrically connecting with the magnet coil assembly 2, the bottom of the central pipe assembly 14 is connected with the inner support assembly 15, and the two electric connection assemblies 18 respectively penetrate through the middle cylinder assembly 16 and are electrically connected with the inner support assembly 15 through the first conductive soft connecting piece 19.

[0099] Referring to Figure 3The upper cylinder assembly 11 comprises an upper cylinder outer cylinder 111, an upper cylinder inner cylinder 112, a filter screen 113, a first end ring 114, a second end ring 115, a third end ring 116, and a main body support plate 117. The upper cylinder outer cylinder 111 and the upper cylinder inner cylinder 112 are arranged in a spaced manner to form a double-layer structure with a first high-pressure water inlet cavity. A waist-shaped hole is formed at the top of the upper cylinder inner cylinder 112, so that the first high-pressure water inlet cavity is in communication with the inner cavity of the upper cylinder inner cylinder 112. The filter screen 113 is arranged on the waist-shaped hole. An insulating layer is fixed on the inner wall of the upper cylinder inner cylinder 112. The double-layer structure is sealed and connected with the container end cover 12 through the first end ring 114. The second end ring 115 is arranged on the inner wall of the middle part of the upper cylinder inner cylinder 112 for fixing the outermost coil of the magnet coil assembly 2. The double-layer structure is connected with the middle cylinder assembly 16 through the third end ring 116. The third end ring 116 is provided with an upper cylinder cooling water channel in communication with the first high-pressure water inlet cavity. The main body support plate 117 for fixing the inner support assembly 15 is connected at the center position of the third end ring 116. A plurality of sector-shaped through holes are formed on the main body support plate 117 in a circumferential array.

[0100] Referring to Figure 4 The middle cylinder assembly 16 comprises a middle cylinder outer cylinder 161, a middle cylinder inner cylinder 162, a middle cylinder upper end ring 163, a middle cylinder middle end ring 164, a high-pressure water inlet pipe 165, a low-pressure water outlet pipe 166, a middle cylinder lower end ring 167, a middle cylinder lower cover 168, and a positioning frame 169. The middle cylinder outer cylinder 161 and the middle cylinder inner cylinder 162 are arranged in a spaced manner to form a double-layer structure with a second high-pressure water inlet cavity. The double-layer structure is sealed and connected with the third end ring 116 through the middle cylinder upper end ring 163. The middle cylinder upper end ring 163 is provided with a middle cylinder cooling water channel in communication with the upper cylinder cooling water channel for the flow of high-pressure water. The double-layer structure is sealed through the middle cylinder middle end ring 164. The middle cylinder outer cylinder 161 is provided with the high-pressure water inlet pipe 165. The middle cylinder inner cylinder 162 is provided with the low-pressure water outlet pipe 166. The middle cylinder inner cylinder 162 is connected with the lower cylinder assembly 17 through the middle cylinder lower end ring 167. The middle cylinder lower cover 168 and the middle cylinder lower end ring 167 are sealed and connected through screws and sealing rings for sealing the middle cylinder inner cylinder 162. The electrical connection assembly 18 penetrates the middle cylinder outer cylinder 161 and the middle cylinder inner cylinder 162 in sequence and is electrically connected with the inner support assembly 15 through the first conductive soft connecting piece 19. The electrical connection assembly 18 is positioned and fixed on the inner wall of the middle cylinder inner cylinder 162 through the fixed positioning frame 169.

[0101] An installation window 1601 is arranged on the middle cylinder assembly 16 near the first conductive soft connecting piece 19 for the installation of the first conductive soft connecting piece 19 and the electrical connection assembly 18.

[0102] The lower cylinder assembly 17 is a metal cylinder. The top of the metal cylinder is connected with the middle cylinder lower end ring 167. An installation inlet 171 is formed on the side wall of the metal cylinder.

[0103] Referring to Figure 4The electric connection assembly 18 comprises an electrode connecting pipe 181, an electrode 182, an insulating positioning plate 183, an insulating ring 184, and an insulating sealing plate 185. The electrode connecting pipe 181 penetrates the middle cylinder outer tube 161 and the middle cylinder inner tube 162 and is fixed on the middle cylinder outer tube 161 and the middle cylinder inner tube 162. The inner wall of the electrode connecting pipe 181 is provided with the insulating ring 183. The electrode 182 is fixed on the electrode connecting pipe 181 through the insulating positioning plate 183 and the insulating sealing plate 185 and is electrically connected with the first conductive soft connecting piece 19 after penetrating the electrode connecting pipe 181.

[0104] Referring to Figure 5 The hydraulic machine assembly 13 comprises a cylinder body 1301, a piston 1302, a stop ring 1303, an equalizing pad 1304, a limiting block 1305, a first force transmission stop ring 1306, a first anti-rotation pin 1307, a second force transmission stop ring 1308, a second anti-rotation pin 1309, a first insulating sleeve 1310, a first force transmission column 1311, a second force transmission column 1312, and an insulating plate 1313. The inner ring of the upper end of the cylinder body 1301 is sealingly connected with the outer end of the top end of the center pipe assembly 14. The outer ring of the upper end of the cylinder body 1301 is connected with the inner ring of the container end cover 12. The cylinder body 1301 is provided with the piston 1302 and the limiting block 1305. The limiting block 1305 is used to limit the moving position of the piston 1302 in the cylinder body 1301. The bottom of the cylinder body 1301 is provided with the stop ring 1303 and the equalizing pad 1304. The bottom of the equalizing pad 1304 is provided with the first force transmission stop ring 1306 and the second force transmission stop ring 1308. The cylinder body 1301 is uniformly provided with first anti-rotation pin grooves. The first force transmission stop ring 1306 is circumferentially provided with first countersunk bolt connecting holes. One end of the first anti-rotation pin 1307 is clamped in the first anti-rotation pin groove on the cylinder body 1301. The other end is threadedly connected with the first countersunk bolt connecting hole on the first force transmission stop ring 1306, which is used to limit the rotation of the first force transmission stop ring 1306. The stop ring 1306 is uniformly provided with second anti-rotation pin grooves. The second force transmission stop ring 1308 is circumferentially provided with second countersunk bolt connecting holes. One end of the second anti-rotation pin 1309 is clamped in the second anti-rotation pin groove on the stop ring 1306. The other end is threadedly connected with the second countersunk bolt connecting hole on the second force transmission stop ring 1308, which is used to limit the rotation of the second force transmission stop ring 1308. A plurality of first force transmission columns 1311 are connected on the first force transmission stop ring 1306. The end of the first force transmission column 1311 away from the first force transmission stop ring 1306 is insulatively connected with the innermost coil in the magnet coil assembly 2. A plurality of second force transmission columns 1312 are connected on the second force transmission stop ring 1307. The position where the second force transmission column 1312 is connected with the second force transmission stop ring 1307 is provided with the first insulating sleeve 1310 for insulation. The end of the second force transmission column away from the second force transmission stop ring 1307 is insulatively connected with the coil adjacent to the innermost coil in the magnet coil assembly 2. The insulating plate 1313 is further provided between the magnet coil assembly 2 and the first force transmission stop ring 1306 for insulation.

[0105] Further, the bottom of the first force transmission column 1311 is sleeved with a second insulating sleeve 1314 at the position where it is insulatedly connected with the innermost coil of the magnet coil assembly 2, for insulation between the first force transmission column 1311 and the magnet coil assembly 2. The bottom of the second force transmission column 1312 is sleeved with a third insulating sleeve 1315, for insulation between the second force transmission column 1312 and the magnet coil assembly 2.

[0106] Still further, the cylinder 1301 is provided with a hydraulic medium input pipe 1316 for inputting hydraulic medium into the cylinder 1301.

[0107] Specifically, by pushing the piston 1302 to move downward, hydraulic pressure is transmitted to the pressure equalizing pad 1304, and then to the first force transmission stop ring 1306, the second force transmission stop ring 1308, the first force transmission column 1311, and the second force transmission column 1312, so as to apply hydraulic pressure to the two innermost coils of the magnet coil assembly 2.

[0108] In the present embodiment, by providing the hydraulic machine assembly 13, axial force can be applied to the magnet coil assembly 2, so as to improve the compression force of the magnet coil assembly 2, and further increase the ability of the magnet coil assembly 2 to resist the radial expansion electromagnetic force, thereby solving the problems of radial expansion of the coil and the insulating sheet, dislocation of the coil and the insulating sheet, blockage of the water flow channel, overheating and even melting of the coil, and cracking and damage of the coil due to excessive radial expansion force.

[0109] Referring back to Figure 3 , the center tube assembly 14 includes a center tube 141, an upper compression ring 142, and a metal end cover 143. The center tube 141 penetrates the magnet coil assembly 2 and the cylinder 1301. The center tube 141 is insulated from the innermost coil of the magnet coil assembly 2 by an insulating sleeve. The inner circle of the upper end of the cylinder 1301 is sealingly connected to the outer top end of the center tube 141 by the upper compression ring 142. The bottom of the center tube 141 is sealingly connected to the inner support assembly 15 by the metal end cover 143. In the present embodiment, the center tube 141 is a hollow metal tube with an insulating layer wrapped around its outer surface. The glass filaments and epoxy resin are integrally cured to the outer wall of the metal tube to enhance the strength, and a plurality of evenly distributed grooves are machined on the outer wall as cooling water channels. This structure has good insulation and strong structural stability. In the traditional method of bonding insulating strips, the insulating strips are prone to falling off, which may block the cooling channels.

[0110] The inner support assembly 15 includes an inner support frame 151, a stop-insulating support plate 152, an anti-rotation stop-insulating frame 153, an electrical connection inlet 154, and an electrical connection outlet 155. The inner support frame 151 has an I-shaped cross-section. The bottom of the inner support frame 151 is fixed to the main support plate 117, and the stop-insulating support plate 153 is fixed to the top of the inner support frame 151 to support the magnet coil assembly 2. Multiple anti-rotation stop-insulating frames 153 are spaced apart on the inner support frame 151 along its height direction. One end of the electrical connection inlet 154 is electrically connected to a set of first conductive flexible connectors 19, and the other end is electrically connected to the innermost coil of the magnet coil assembly 2. One end of the electrical connection outlet 155 is electrically connected to another set of first conductive flexible connectors 19, and the other end is electrically connected to the outermost coil of the magnet coil assembly 2. Both the electrical connection inlet 154 and the electrical connection outlet 155 are connected to the anti-rotation stop insulating frame 153. The inner support frame 151, the stop insulating support plate 152, and the anti-rotation stop insulating frame 153 all have through cooling water through holes.

[0111] See Figure 6 It should be noted that the water-cooled magnet device for the high-field hybrid magnet is installed inside the superconducting magnet 10. During long-term operation, the magnet coil assembly inside the water-cooled magnet device needs to be repaired. However, the external superconducting magnet 10 is not allowed to be moved during repair. The current repair process is to first remove and transport out the lower cylinder of the water-cooled magnet device, so that the upper and middle cylinders fall together. Then, the upper cylinder is lifted, the middle cylinder is removed and transported out, the upper cylinder is lowered and transported out, and finally the magnet coil assembly inside the upper cylinder is removed and repaired. In the entire dismantling and repair process, it is necessary to remove the external water pipes, external electrical connection equipment, and the upper, middle and lower cylinders connected to the water-cooled magnet device. The dismantling and repair is complicated, time-consuming and labor-intensive, which greatly affects the dismantling efficiency.

[0112] In this application, it is only necessary to open the installation window 1601 and disconnect the first conductive flexible connector 19 from the electrical connection assembly 18 from the installation window 1601. Then, it is only necessary to lift the container end cap 12, and the liquid press assembly 13, the central tube assembly 14 and the magnet coil assembly 2 are lifted along with the container end cap 12, so that the magnet coil assembly 2 can be removed from the superconducting magnet 10 for maintenance. During the removal of the magnet coil assembly 2, it is not necessary to remove the external water pipe, external electrical connection equipment and upper, middle and lower cylinders that are connected to the high field mixing magnet internal water-cooled magnet device. The removal and maintenance process is simple and fast, which improves the removal efficiency.

[0113] See Figure 7The magnet coil assembly 2 includes multiple radially connected coils, with insulation between adjacent coils, between the outer wall of the central tube 141 and the innermost coil, and between the outermost coil and the inner wall of the upper cylinder 112; adjacent coils are connected in series; the top and bottom of the coils are connected to the top or bottom of the container assembly 2 through an insulating anti-rotation structure 9.

[0114] The magnet coil assembly 2 includes six coils A 21, B 22, C 23, D 24, E 25, and F 26 that are radially connected in series, and a first electrical connector 27. One end of the first electrical connector 27 is electrically connected to the innermost coil A 21, and the other end is electrically connected to the electrical connection inlet 154. The outermost coil F 26 is electrically connected to the electrical connection outlet 155.

[0115] Coil A 21 and coil B 22 are electrically connected via AB electrical connection plate 4; coil B 22 and coil C 23 are electrically connected via BC electrical connection plate 5; coil C 23 and coil D 24 are electrically connected via CD electrical connection plate 6; coil D 24 and coil E 25 are electrically connected via DE electrical connection plate 7; coil E 25 and coil F 26 are electrically connected via EF electrical connection plate 8; AB electrical connection plate 4 is insulated from hydraulic press assembly 13; BC electrical connection plate 5, CD electrical connection plate 6, DE electrical connection plate 7, and EF electrical connection plate 8 are all connected to container assembly 1 via insulated anti-rotation structure 9.

[0116] See Figure 8 The insulation between coil A 21 and coil B 22 is achieved through the insulating tube assembly 3. The insulation between coil B 22 and coil C 23, between coil C 23 and coil D 24, between coil D 24 and coil E 25, and between coil E 25 and coil F 26 is also achieved through the insulating tube. It should be noted that the insulating tube is available in the current market.

[0117] See Figure 9 and Figure 10 The insulating cylinder assembly 3 is formed by circumferentially splicing multiple insulating sheets 31 to form a cylindrical structure. Each insulating sheet 31 has a first protrusion 311 on its inner and outer walls along the length of the insulating sheet 31. The space between adjacent first protrusions 311 is a cooling water channel. Each insulating sheet 31 has a first positioning boss 312 at both ends along its length on its inner wall. The first positioning bosses 312 on adjacent insulating sheets fit together to form a boss group. The outer side of coil A is provided with a corresponding slot for engaging the boss group (not shown in the figure).

[0118] See Figure 11 to Figure 13, A coil 21 includes A magnet coil 211, A coil end plate 212, A coil upper electrode cylinder 213, upper locking nut 214, upper check nut, A coil lower electrode cylinder 215, insulating sleeve ring 216, lower locking nut 217, lower check nut, A coil transition connecting cylinder 218, wherein A coil upper electrode cylinder 213 includes first A coil upper electrode cylinder 2131 and second A coil upper electrode cylinder 2132 connected together, A coil lower electrode cylinder 215 includes first A coil lower electrode cylinder 2151 and second A coil lower electrode cylinder 2152 connected together.

[0119] A magnet coil 211 is connected with A coil end plate 212 at both ends, first A coil upper electrode cylinder 2131 is connected with A coil end plate 212 at one end away from second A coil upper electrode cylinder 2132, second A coil upper electrode cylinder 2132 is electrically connected with B coil 22 through AB electrical connection plate 4 at one end away from first A coil upper electrode cylinder 2131, and upper locking nut 214 and upper check nut are arranged from bottom to top on second A coil upper electrode cylinder 2132, and second A coil upper electrode cylinder 2132 is electrically connected with B coil 22 through upper locking nut 214 and upper check nut, first transmission column 1311 is insulatedly connected with AB electrical connection plate 4 through hydraulic insulating sleeve at one end away from first transmission stop ring 1306, first A coil lower electrode cylinder 2151 is connected with A coil end plate 212 at one end away from second A coil lower electrode cylinder 2152, second A coil lower electrode cylinder 2152 is connected with A coil transition connecting cylinder 218 at one end away from first A coil lower electrode cylinder 2151, and one end of first electrical connecting piece 27 is connected between A coil transition connecting cylinder 218 and stop insulating support plate 152, and the other end is connected with electrical connection leading piece 154.

[0120] Insulating sleeve ring 216 is arranged on outer wall of lower end of second A coil lower electrode cylinder 2152 for insulation with B coil 22, lower locking nut 217 and lower check nut are arranged outside insulating sleeve ring 216 for locking A coil lower electrode cylinder 215, and end of first electrical connecting piece 27 extending into cylinder wall assembly 11 is electrically connected with A coil transition connecting cylinder 218.

[0121] Referring to Figure 14 to Figure 18 A coil end plate 212, A coil upper electrode cylinder 213 and A coil lower electrode cylinder 215 are all provided with multiple A coil cooling channels, wherein A coil end plate 212, first A coil upper electrode cylinder 2131 and first A coil lower electrode cylinder 2151 are all provided with multiple A coil axial cooling channels 2121, and first A coil upper electrode cylinder 2131 and first A coil lower electrode cylinder 2151 are both provided with multiple A coil lateral cooling channels 21312.

[0122] The plurality of radial threaded holes provided on the second A-coil upper electrode cylinder 2132 are used for fastening the AB electric connection plate 4 by screws. The second A-coil upper electrode cylinder 2132 is provided with a pressure bearing surface 1, a pressure bearing surface 2, and a pressure bearing surface 3. The pressure bearing surface 1 is used to bear the force transmitted to the A-coil 21 by the upper locking nut 214 and the upper anti-loosening screw of the B-coil 22, and simultaneously realize the electrical connection of the A-coil 21 and the B-coil 22. The pressure bearing surface 2 is used to bear the hydraulic pressure transmitted to the insulating plate 1313 of the hydraulic machine assembly 13, and the plurality of axial light holes provided thereon are used to install the hydraulic insulating sleeve. The pressure bearing surface 3 is the connecting surface of the second A-coil upper electrode cylinder 2132 and the first A-coil upper electrode cylinder 2131.

[0123] The first A-coil lower electrode cylinder 2151 is provided with a plurality of annular grooves and A-coil axial cooling channels 2121 on the two end faces of the large-diameter end, which improves the flow of cooling water. A plurality of threaded holes are provided on the end face of the small-diameter end, which are used for circumferential positioning with the second A-coil lower electrode cylinder 2152 through threaded cylindrical pins. The first A-coil lower electrode cylinder 2151 is provided in a trumpet mouth shape, which improves the water flow channel inside the A-coil 21. The second A-coil lower electrode cylinder 2152 is provided with a pressure bearing surface 4, a pressure bearing surface 5, and a pressure bearing surface 6. The pressure bearing surface 4 is used to install the insulating sleeve ring 216 to realize the lower insulation between the A-coil 21 and the B-coil 22, and bear the force transmitted to the A-coil 21 by the lower locking nut 217 and the lower anti-loosening nut of the B-coil 22. The pressure bearing surface 5 is used to bear the hydraulic pressure applied by the hydraulic machine assembly 13, and the plurality of axial light holes provided thereon are used to install the A-coil transition connecting cylinder 218. The pressure bearing surface 6 is the connecting surface of the first A-coil lower electrode cylinder 2151 and the second A-coil lower electrode cylinder 2152.

[0124] The circumferential outer wall of the A-coil end plate 212 is provided with a first limiting groove 2122. The circumferential outer wall of the first A-coil upper electrode cylinder 2131 is provided with a second limiting groove 21311. The circumferential outer wall of the first A-coil lower electrode cylinder 2151 is provided with a positioning groove 21511. The first limiting groove 2122, the second limiting groove 21311, and the positioning groove 21511 are connected to form a clamping groove for clamping the protrusion group composed of two first positioning protrusions 312. The positioning groove 21511 is in a stepped shape, and the groove bottom of the positioning groove 21511 is in contact with the bottom surface of the protrusion group to serve as a limiting function for the protrusion group. When the high-pressure cooling water is flushed downward, the insulating sheet 31 will not move downward, thereby achieving the support of the insulating sheet 31. Finally, the support of the insulating cylinder assembly 3 is achieved, which prevents the insulating cylinder assembly 3 from moving up and down. The insulation between the magnet coils in the A-coil 21 and the B-coil 22 is realized through the insulating cylinder assembly 3.

[0125] It should be noted that the traditional insulation cylinder is integral, and the inner and outer walls are evenly distributed with multiple ribs, and the cooling water channels are between adjacent ribs. Each rib is attached to the circumference of the coil side wall to ensure that there is sufficient cooling water flow between the inner wall of the insulation cylinder and the internal coil, and the outer wall and the outer wall coil. In this embodiment, the A coil 21 and the B coil 22 are electrically connected in series, and the A coil 21 has no fixed rod and cannot be positioned and tightened by itself. During the operation of the high-field hybrid magnet intercalated water-cooled magnet device, the coil is subjected to electromagnetic force and will rotate circumferentially, so the coil must be positioned, otherwise the cooling holes on the coil will be misaligned and blocked due to rotation, resulting in the coil being burned out because the heat is not removed in time by the cooling water. The use of traditional insulation cylinders cannot achieve the positioning of the A coil 21.

[0126] In this embodiment, the boss group on the inner wall of each insulation sheet 31 is clamped in the first limiting groove 2122, the second limiting groove 21311 and the positioning groove 21511, so that the electromagnetic rotating force of the coil is transmitted to the A coil end plate 212 at both ends of the A magnet coil 211. The A coil end plate 212 is transmitted to the hydraulic machine assembly 13 and the inner support assembly 15 through the A coil upper electrode cylinder 213 and the A coil lower electrode cylinder 215 respectively, thereby preventing the rotation of the A magnet coil 211 and achieving the positioning of the A magnet coil 211. At the same time, the insulation between the magnet coils in the A coil 21 and the B coil 22 is achieved, so that the insulation cylinder assembly 3 in this embodiment not only plays an insulation role, but also replaces the fixed rod to position the A magnet coil 211. Again, the fixed rod is cancelled, so that the clamping groove of the bit sheet on the A magnet coil 211 is smaller than the fixed hole used to fix the fixed rod before. The current density distribution of the bit sheet is inversely proportional to the radius, and the insulation sheet 31 is placed in the low current density area of the bit sheet, so that the current carrying capacity is improved and the magnetic field strength is improved.

[0127] In addition, considering that the assembly gap during installation is as small as possible, but the radial expansion force and deformation amount during the operation of the high-field hybrid magnet intercalated water-cooled magnet device and the engineering practice (the coil itself is composed of thousands of conductor sheets stacked together, and there is a certain deviation between the ideal value and the inner and outer diameters), the implementation space of the insulation cylinder is only 1.6mm, and if the insulation cylinder assembly 3 in this embodiment is installed with an integral insulation cylinder, due to the small implementation space and the need for the insulation cylinder to play a positioning role, the positioning requires tight assembly, and a large gap cannot play a positioning role, thereby making it extremely difficult to install the integral insulation cylinder, and even the insulation cylinder cannot be fitted into the outer wall of the A magnet coil 211. In this embodiment, the segmented insulation cylinder assembly 3 composed of multiple insulation sheets 31 is used, and the insulation sheet 31 is fitted on the outer wall of the A coil 21, which greatly reduces the installation difficulty and can achieve good tight assembly effect.

[0128] Again, refer to Figure 11 to Figure 13, B coil 22 includes B magnet coil 221, B coil end plate 222, B fixed rod 223, B coil upper electrode cylinder 224, second conductive soft connecting piece 225, B coil lower electrode cylinder 226, wherein B coil upper electrode cylinder 224 includes first B coil upper electrode cylinder 2241 and second B coil upper electrode cylinder 2242 connected with each other, and B coil lower electrode cylinder 226 includes first B coil lower electrode cylinder 2261 and second B coil lower electrode cylinder 2262 connected with each other.

[0129] B magnet coil 221 is fixed between the two groups of B coil end plates 222 through B fixed rod 223, first B coil upper electrode cylinder 2241 is connected with the upper end B coil end plate 222 at the end away from second B coil upper electrode cylinder 2242, second B coil upper electrode cylinder 2242 is electrically connected with AB electric connecting plate 4 through second conductive soft connecting piece 225 at the end away from first B coil upper electrode cylinder 2241, and second B coil upper electrode cylinder 2242 is also electrically connected with second A coil upper electrode cylinder 2132 through upper locking nut 214 and upper anti-loosening screw; second transmission column 1312 is insulatedly connected with second B coil upper electrode cylinder 2242 through hydraulic insulation sleeve after penetrating through AB electric connecting plate 4 at the end away from second transmission stop ring 1307, first B coil lower electrode cylinder 2261 is connected with the lower end B coil end plate 222 at the end away from second B coil lower electrode cylinder 2262, and second B coil lower electrode cylinder 2262 is electrically connected with C coil 23 through BC electric connecting plate 5 at the end away from first B coil lower electrode cylinder 2261, and BC electric connecting plate 5 is insulatedly connected with inner support assembly 15 through insulation anti-rotation structure 9.

[0130] Referring to Figure 19 Insulation anti-rotation structure 9 includes anti-rotation insulation plate 91, anti-rotation metal cylinder 92, anti-rotation metal threaded pin 93 and anti-rotation insulation sleeve 94, anti-rotation insulation plate 91 is arranged between anti-rotation metal cylinder 92 and corresponding electric connecting plate, anti-rotation metal cylinder 92 is connected with container assembly 1 at the end away from electric connecting plate, threaded section of anti-rotation metal threaded pin 93 is threadedly connected with corresponding electric connecting plate, the other end is sleeved with anti-rotation insulation sleeve 94 and inserted into anti-rotation metal cylinder 92 after penetrating through anti-rotation insulation plate 91, so that anti-rotation metal threaded pin 93 is insulatedly connected with anti-rotation metal cylinder 92, and specifically, Figure 20 Taking the connection between insulation anti-rotation structure 9 and BC electric connecting plate 5 as an example, BC electric connecting plate 5 is connected with B coil 22 and C coil 23 through screws, anti-rotation insulation plate 91 and anti-rotation metal cylinder 92 are arranged on the bottom surface of BC electric connecting plate 5 in sequence, threaded section of anti-rotation metal threaded pin 93 is threadedly connected with BC electric connecting plate 5, the other end is sleeved with anti-rotation insulation sleeve 94 and inserted into anti-rotation metal cylinder 92 after penetrating through anti-rotation insulation plate 91, and the bottom surface of anti-rotation metal cylinder 92 is fixedly connected with stop insulation support plate 152. Further, a plurality of cooling water channels are arranged on anti-rotation metal cylinder 92.

[0131] It should be noted that the existing insulation anti-rotation mechanism adopts a cylindrical insulation anti-rotation structure. The water-cooled magnet can generate an electromagnetic torque of 9896 N*m in actual operation. Each coil transmits the circumferential electromagnetic force to the insulation anti-rotation structure through the electric connection plate, and then transmits the circumferential rotating force to the container assembly 1 through the insulation anti-rotation structure. Therefore, the insulation anti-rotation structure needs to withstand the circumferential electromagnetic rotating force to prevent the coil from rotating. At present, in order to play an insulation role, the insulation anti-rotation structure is made of insulation composite material, and a plurality of pin holes are formed at both ends. One end of the insulation anti-rotation structure is connected with the electric connection plate by inserting a pin into the pin hole, and the other end is connected with the container assembly 1 by inserting a pin into the pin hole, thereby transmitting the rotating force to the container assembly 1. In addition, in order to realize the cooling effect, a plurality of through cooling holes are formed on the circumferential surface of the cylindrical insulation anti-rotation structure. Due to the plurality of pin holes and cooling holes formed on the insulation anti-rotation structure, the strength of the insulation composite material of the cylindrical insulation anti-rotation structure is greatly reduced, and the water-cooled magnet cannot withstand the strong electromagnetic rotating force in operation, resulting in damage to the electric connection plate and the coil. In the present embodiment, the anti-rotation metal cylinder 92 and the anti-rotation metal threaded pin 93 are both made of metal material, and one end of the anti-rotation metal threaded pin 93 is insulatedly connected with the anti-rotation metal cylinder 92, and the other end penetrates through the anti-rotation insulation plate 91 and is connected with the electric connection plate, so that a hard connection is formed between the electric connection plate and the anti-rotation metal cylinder 92. The anti-rotation insulation plate 91 arranged between the anti-rotation metal cylinder 92 and the corresponding electric connection plate plays an insulation role. The circumferential electromagnetic rotating force generated by the water-cooled magnet in actual operation is transmitted to the anti-rotation metal threaded pin 93 through the electric connection plate, and then transmitted to the anti-rotation metal cylinder 92, and then transmitted to the container assembly 1 through the anti-rotation metal cylinder 92. The circumferential electromagnetic rotating force transmission process is a hard connection transmission. The anti-rotation metal cylinder 92 replaces the insulation anti-rotation structure of the insulation composite material in the prior art. The anti-rotation metal cylinder 92 has high strength of metal, solves the problem of insufficient strength of the traditional structure, and prevents the electric connection plate and the coil from being damaged.

[0132] Further, a plurality of connection holes are formed on the upper and lower end faces of the anti-rotation insulation plate 91, and the anti-rotation metal cylinder 92 and the corresponding electric connection plate are connected by bolts.

[0133] Further, a plurality of anti-rotation lateral cooling channels 921 are arranged on the circumferential side face of the anti-rotation metal cylinder 92, and a first anti-rotation circumferential cooling channel 922 is arranged on the end face of the anti-rotation metal cylinder 92 close to the anti-rotation insulation plate 91 for the flow of cooling water.

[0134] Further, a second anti-rotation circumferential cooling channel 911 is arranged on the anti-rotation insulation plate 91 and communicates with the first anti-rotation circumferential cooling channel 922.

[0135] Reference Figure 21 to Figure 25The B coil end plate 222, the B coil upper electrode cylinder 224, and the B coil lower electrode cylinder 226 are each provided with a plurality of B coil cooling channels. The B coil end plate 222, the first B coil upper electrode cylinder 2241, and the first B coil lower electrode cylinder 2261 are each provided with a plurality of B coil axial cooling channels 2221, and the second B coil upper electrode cylinder 2242 and the second B coil lower electrode cylinder 2262 are each provided with a plurality of B coil lateral cooling channels 22421.

[0136] Further, the fixing rod 223 is fixed between the two B coil end plates 222 by pulling the insulating pad, the disc-shaped gasket, the metal pad, and the nut, and the fixing rod 223 is made of a metal flat rod and an insulating layer solidified by glass filaments and epoxy resin. The metal flat rod and the insulating layer have good integrity and stable insulation performance, and the fixing rod 223 is provided with threads at both ends to lock the B magnet coil 221. The electrical insulation between the fixing rod 223 and the B coil upper electrode cylinder 224 and the B coil lower electrode cylinder 226 is achieved by an insulating tube. The insulating tube is a heat-shrinkable tube, which is sleeved outside the fixing rod 223, the insulating pad, the disc-shaped gasket, the metal pad, and the nut. A heating tool is used to heat the heat-shrinkable tube, and the heat-shrinkable tube is shrunk and fixed tightly, which can save space and improve the cooling water channel and electrical insulation requirements.

[0137] The B coil end plate 222 is provided with a plurality of uniformly distributed fixing rod holes and annular grooves; the first B coil upper electrode cylinder 2241 is provided with a plurality of cooling grooves and fixing rod holes, and adopts a horn mouth structure to increase the cooling water passage; the first B coil upper electrode cylinder 2241 is provided with a plurality of threaded holes at the small end for connecting the second B coil upper electrode cylinder 2242; the first B coil lower electrode cylinder 2261 is additionally provided with a plurality of first insulation cylinder support platforms 22611 for supporting the insulation cylinder between the B coil 22 and the C coil 23, and a cooling water passage between adjacent first insulation cylinder support platforms 22611, in addition to the same arrangement as the first B coil upper electrode cylinder 2241; the second B coil upper electrode cylinder 2242 is provided with a plurality of light holes, force transmission holes and threaded holes, the plurality of light holes are fixedly connected to the first B coil upper electrode cylinder 2241 through countersunk screws, the plurality of threaded holes are used for connecting the second conductive soft connecting piece 225 to realize the electrical connection of the A coil 21 and the B coil 22, and the plurality of force transmission holes are used for loading a hydraulic insulation sleeve to realize the hydraulic pressure of the hydraulic machine assembly 13 applied to the B coil 22 and the insulation of the B coil 22 from the hydraulic machine assembly 13; the second B coil upper electrode cylinder 2242 is provided with upper locking nut threads and upper anti-loose screw threads for loading the upper locking nut 214 and the upper anti-loose screw to lock the upper part of the A coil 21 and electrically connect the A coil 21; the second B coil lower electrode cylinder 2262 is additionally provided with lower locking nut threads and lower anti-loose nut threads for loading the lower locking nut 217 and the lower anti-loose nut and the insulation sleeve ring 216 to lock the lower part of the A coil 21 and electrically insulate the A coil 21, compared with the second B coil upper electrode cylinder 2242; the second B coil lower electrode cylinder 2262 is provided with threaded holes for connecting the B coil and the BC connecting plate 5 to realize the electrical connection of the B coil 22 and the C coil 23.

[0138] In the present embodiment, the second conductive soft connecting piece 225 is composed of a plurality of copper sheets with a thickness of several microns, and the two end holes are pressed into an integral structure through a pressing process. When the high-field hybrid magnet uses the interposition water-cooled magnet device to operate, the hydraulic machine assembly 13 applies pressure to the A coil 21 and the B coil 22, so that the coil height changes. The soft connection can be stretched and compressed, and can stably ensure the electrical connection between the A coil 21 and the B coil 22. Therefore, the electrical connection of the A coil 21 and the B coil 22 adopts a two-way parallel technology, that is, the first way of conducting electricity is connected through the upper locking nut 214 and the upper anti-loose screw, and the second way is connected through the second conductive soft connecting piece 225. In this way, it can realize the stable transmission of larger current in a compact space; at the same time, during the operation of the high-field hybrid magnet using the interposition water-cooled magnet device, under the action of electromagnetic force and hydraulic pressure of the hydraulic machine assembly 13, the A coil 21 and the B coil 22 have different compression amounts. The second conductive soft connecting piece 225 can realize stable electrical connection under the condition of different compression amounts.

[0139] In addition, the disc-shaped gasket is composed of a plurality of butterfly springs in the embodiment, and the coil fastening can reserve a large pre-tightening force for the B coil 22, and can ensure the electrical connection of each part of the coil when the high-field hybrid magnet operates with the water-cooled magnet device.

[0140] Referring to Figure 26 to Figure 29 The C coil 23 comprises a C magnet coil 231, a C coil end plate 232, a C fixing rod 233, a C coil upper electrode cylinder 234, and a C coil lower electrode cylinder 235.

[0141] The C magnet coil 231 is fixed between the two groups of C coil end plates 232 through the C fixing rod 233, one end of the C coil upper electrode cylinder 234 is connected with the upper C coil end plate 232, and the other end is electrically connected with the D coil 24 through the CD electrical connection plate 6, one end of the C coil lower electrode cylinder 235 is connected with the lower C coil end plate 232, and the other end is electrically connected with the BC electrical connection plate 5, the CD electrical connection plate 6 is insulatedly connected with the container end cover 12 through the insulation anti-rotation structure 9, specifically, the CD electrical connection plate 6 is connected with the C coil 23 and the D coil 24 through screws, the anti-rotation insulation plate 91, the anti-rotation metal cylinder 92, and the anti-rotation insulation sleeve 94 are sequentially arranged on the top surface of the CD electrical connection plate 6 from bottom to top, the threaded segment of the anti-rotation metal threaded pin 93 is threadedly connected with the CD electrical connection plate 6, the other end of the anti-rotation metal threaded pin 93 is sleeved with the anti-rotation insulation sleeve 94 and inserted into the anti-rotation metal cylinder 92 after penetrating through the anti-rotation insulation plate 91.

[0142] A plurality of C coil cooling channels are arranged on the C coil end plate 232, the C coil upper electrode cylinder 234, and the C coil lower electrode cylinder 235, wherein a plurality of C coil axial cooling channels 2321 are arranged on the C coil end plate 232, and a plurality of C coil lateral cooling channels 2341 are arranged on the C coil upper electrode cylinder 234 and the C coil lower electrode cylinder 235.

[0143] The C coil end plate 232 is provided with threaded holes, and the C upper electrode cylinder 234 and the C lower electrode cylinder 235 are fixed by screws. The outer circumferential side of the C coil end plate 232 is provided with a plurality of anti-rotation grooves 2322. The end portions of the C coil upper electrode cylinder 234 and the C coil lower electrode cylinder 235, which are connected with the C coil end plate 232, are provided with a plurality of bosses 2342 matched with the anti-rotation grooves 2322, so as to guarantee the connection of the C coil end plate 232 with the C coil upper electrode cylinder 234 and the C coil lower electrode cylinder 235. A plurality of fixed rod sinking holes are arranged on the C coil upper electrode cylinder 234 and the C coil lower electrode cylinder 235. The end portions of the C fixed rods 233 are sunk into the C coil upper electrode cylinder 234 and the C coil lower electrode cylinder 235. The outer circumferential wall of the C coil lower electrode cylinder 235 is provided with a plurality of second insulation cylinder support tables 2351 for supporting the insulation cylinder between the C coil 23 and the D coil 24. The adjacent second insulation cylinder support tables 2351 form water flow grooves 2352 for leading the cooling water between the inner wall of the insulation cylinder and the outer wall of the C magnet coil 231.

[0144] In the embodiment, the D coil 24 is consistent with the C coil 23 in structure. The D coil comprises a D magnet coil, a D coil end plate, a D fixed rod, a D coil upper electrode cylinder and a D coil lower electrode cylinder. The D magnet coil is fixed between the two groups of D coil end plates by the D fixed rod. One end of the D coil upper electrode cylinder is connected with the upper D coil end plate, and the other end is electrically connected with the CD electrical connection plate 6. One end of the D coil lower electrode cylinder is connected with the lower D coil end plate, and the other end is electrically connected with the E coil 25 through the DE electrical connection plate 7. The DE electrical connection plate 7 is connected with the inner support assembly 15 through the insulation anti-rotation structure 9. Specifically, the DE electrical connection plate 7 is connected with the D coil 24 and the E coil 25 by screws. The anti-rotation insulation plate 91, the anti-rotation metal cylinder 92 and the anti-rotation insulation sleeve 94 are arranged on the bottom surface of the DE electrical connection plate 7 from top to bottom. The threaded segment of the anti-rotation metal threaded pin 93 is screwed with the DE electrical connection plate 7. The other end of the anti-rotation metal threaded pin 93 is sleeved with the anti-rotation insulation sleeve 94 and inserted into the anti-rotation metal cylinder 92 after penetrating the anti-rotation insulation plate 91. The bottom of the anti-rotation metal cylinder 92 is fixedly connected with the stop insulation support plate 152.

[0145] A plurality of D coil cooling channels are arranged on the D coil end plate, the D coil upper electrode cylinder and the D coil lower electrode cylinder. The two ends of the D fixed rod are provided with threads, and the D magnet coil is locked by the insulating pad, the disc-shaped gasket, the metal pad and the nut in sequence.

[0146] Referring to Figure 30 and Figure 31The E coil 25 comprises an E magnet coil 251, an E coil end plate 252, an E fixing rod 253, and an EF electric connection cylinder 254.

[0147] The E magnet coil 251 is fixed between the two groups of E coil end plates 252 by the E fixing rod 253. One end of the EF electric connection cylinder 254 is electrically connected with the E coil end plate 252 at the upper end, and the other end is electrically connected with the F coil 26 through the EF electric connection plate 8. The E coil end plate 252 at the lower end of the E magnet coil 251 is insulatedly connected with the inner support assembly 15 through the anti-insulation cylinder. The EF electric connection plate 8 is connected with the container end cover 12 through the anti-rotation insulation structure 9. Specifically, the EF electric connection plate 8 is electrically connected with the E coil 25 and the F coil 26 through screws. The anti-rotation insulation plate 91, the anti-rotation metal cylinder 92, and the anti-rotation insulation sleeve 94 are sequentially arranged on the top surface of the EF electric connection plate 8 from bottom to top. The threaded segment of the anti-rotation metal threaded pin 93 is threadedly connected with the EF electric connection plate 8, and the other end of the anti-rotation metal threaded pin 93 is inserted into the anti-rotation metal cylinder 92 after penetrating through the anti-rotation insulation plate 91 and being sleeved with the anti-rotation insulation sleeve 94.

[0148] A plurality of E coil axial cooling channels 2521 are arranged on the E coil end plate 252. The E fixing rod 253 is provided with threads at both ends, and is used to lock the E magnet coil 251 by sequentially passing through an insulation pad, a disc-shaped gasket, a metal pad, and a nut.

[0149] Referring to Figure 32 and Figure 33 The F coil 26 comprises an F magnet coil 261, an F coil end plate 262, an F fixing rod 263, an F transition electric connection ring 264, an F lower insulation support anti-rotation cylinder 265, and a reinforcing rod 266.

[0150] The F magnet coil 261 is fixed between the two groups of F coil end plates 262 by the F fixing rod 263. The F coil end plate 262 at the upper end is electrically connected with the EF electric connection plate 8, and the F coil end plate 262 at the lower end is electrically connected with the electric connection lead-out piece 155 through the F transition electric connection ring 264. The F coil end plate 262 at the lower end is fixedly connected with the second end ring 115 on the upper cylinder assembly through the F lower insulation support anti-rotation cylinder 265.

[0151] The F peripheral fixing rod 264 is made of a metal circular cross-section rod and an insulation layer solidified by glass filaments and epoxy resin, and is used to insulate the F peripheral fixing rod 264 from the F magnet coil 261 and the F coil end plate 262. The insulation layer is provided with thickened layers at both ends to play a positioning role in the installation of the F coil end plate 262. The F peripheral fixing rod 264 is provided with threads at both ends, and the F magnet coil 261, the F coil end plate 262, the F insulation gasket ring, and the F adjusting gasket ring are locked and fixed by the F peripheral nut together with the F fixing rod 263, so as to lock and fix the F magnet coil 261 and the F coil end plate 262.

[0152] A plurality of F coil axial cooling channels 2621 are arranged on the F coil end plate 262, and threaded ends of the F fixing rod 263 are sequentially locked by an insulating pad, a disc-shaped washer, a metal pad, and a nut to lock the F magnet coil 261.

[0153] Referring to Figure 34 The F coil end plates 262 at the upper and lower ends are also connected to the end portions of the F magnet coil 261 close to the F coil end plates 262 through the reinforcing rods 266. Specifically, the end faces of the F coil end plates 262 opposite to the F magnet coil 261 are each provided with two rings of uniformly distributed special holes 2611 for mounting the reinforcing rods 266, but are not limited to two rings, and the specific number of rings is determined according to actual needs. The reinforcing rods 266 achieve the reinforced connection of the F magnet coil 261 at the two ends to the bit washer and the insulating washer, greatly improve the anti-expansion and limiting capability of the F magnet coil 261 at the two ends to the bit washer and the insulating washer, achieve the reinforcement of the F magnet coil 261 at the two ends, and enhance the stability of the F magnet coil 261 at the two ends.

[0154] It should be noted that when the high-field hybrid magnet interposition water-cooled magnet device is in operation, the outermost F coil 26 at the two ends will be subjected to the pressure of high-pressure cooling water and axial electromagnetic force in the axial direction thereof. The axial electromagnetic force at the two ends is gradually pressed toward the central plane of the F coil 26, and the axial electromagnetic force at the central plane is accumulated to the maximum value, so that the F magnet coil 261 is contracted, the fastening force of the fixing rod 263 is reduced, the axial pressure of the bit washer on the F magnet coil 261 near the upper and lower F coil end plates 262 is reduced, and under the strong background magnetic field of the outer superconducting magnet, the fixing rod 263 cannot resist the circumferential electromagnetic force (expansion force), the bit washer is moved outward and dislocated, and the cooling water hole is blocked. In the present embodiment, the reinforcing rods 266 are arranged to reinforce the F magnet coil 261 at the two ends and enhance the stability of the F magnet coil 261 at the two ends, thereby solving the problems of movement and dislocation of the end plate near the end portion (i.e., the bit washer and the insulating washer) of the F coil 26 during operation. In addition, the radial cross-sectional area of the peripheral coil is large, the magnetic flux passing through is large, and the outward expansion electromagnetic force is large. Therefore, in the present embodiment, the outermost F coil 26 is subjected to the largest outward expansion electromagnetic force, and therefore the reinforcing rods 266 are arranged on the outermost F coil 26 of the high-field hybrid magnet interposition water-cooled magnet device.

[0155] Referring to Figure 35, F transition electrical connection ring 264 is provided with a cut 2641 along its axial direction, so that F transition electrical connection ring 2641 is a non-closed ring. It should be noted that the existing F transition electrical connection ring structure is a closed ring structure, and in the case of sudden power failure during the operation of the high-field hybrid magnet intercalated water-cooled magnet device, a large instantaneous induced current will be generated, which will produce an outward expansion force on the closed F transition electrical connection ring structure, which is easy to cause damage to the F transition electrical connection ring structure. In this embodiment, the F transition electrical connection ring 264 is provided with a cut 2641 along its axial direction, so that the F transition electrical connection ring 2641 is a non-closed ring. Thus, in the case of sudden power failure during the operation of the high-field hybrid magnet intercalated water-cooled magnet device, the instantaneous current will not flow into the non-closed F transition electrical connection ring 2641, thereby preventing damage to the F transition electrical connection ring 2641 in the case of sudden power failure during the operation of the high-field hybrid magnet intercalated water-cooled magnet device.

[0156] Further, the F transition electrical connection ring 264 is further provided with a stepped surface 2642 to facilitate electrical connection with the electrical connection lead-out piece 155.

[0157] In this embodiment, the current is introduced by a group of electrical connection assemblies 18 into the corresponding first conductive soft connection piece 19, and then flows into the A coil 21 through the electrical connection lead-in piece 154 and the first electrical connection piece 27. The A coil 21 passes through the upper locking nut 214, the upper anti-loose screw, and the AB electrical connection plate 4, and the second conductive soft connection piece 225 to connect the current to the upper end of the B coil 22, and then flows to the lower end of the B coil 23, and then flows to the lower end of the C coil 23 through the BC electrical connection plate 5. The current flows from the lower end of the C coil 23 to its upper end, and then flows to the upper end of the D coil 24 through the CD electrical connection plate 6. The current flows from the upper end of the D coil 24 to its lower end, and then flows to the lower end of the E coil 25 through the DE electrical connection plate 7. The current flows from the lower end of the E coil 25 to its upper end, and then flows into the upper end of the F coil 26 through the EF electrical connection plate 8. The current flows from the upper end of the F coil 26 to its lower end, and then flows into the electrical connection lead-out piece 155 through the F transition electrical connection ring 265. The current is then introduced into another group of electrical connection assemblies 18 through the first conductive soft connection piece 19, and finally the current is introduced out of the high-field hybrid magnet intercalated water-cooled magnet device.

[0158] Embodiment two

[0159] Reference 36 to Figure 38The difference between the embodiment and the embodiment one is that the insulation cylinder assembly 3 is formed into a cylindrical structure by axially splicing and combining a plurality of insulation sleeves 32, the inner wall and the outer wall of each insulation sleeve 32 are provided with second convex ridges 321 along the length direction of the insulation sleeve, and a cooling water channel is arranged between adjacent second convex ridges 321, a plurality of second positioning bosses 322 are arranged on the inner wall of each insulation sleeve 32 along the length direction thereof, a clamping groove (not shown in the figure) corresponding to the second positioning boss is arranged on the outer side of the A coil 21, and the thickness of the second convex ridges 321 on the outer wall of the adjacent insulation sleeve 32 gradually decreases from the middle of the insulation cylinder assembly 3 to the two ends.

[0160] It should be noted that the electromagnetic force of the coil of the water-cooled magnet gradually increases from the two ends to the middle, and the electromagnetic pressure is the largest at the middle. Therefore, during operation, the radial displacement of the two ends of the coil is the largest, and the size of the traditional integrated insulation cylinder is the same from the middle to the two ends, which causes the radial electromagnetic force of the two ends of the inner coil to be transmitted to the outer coil, which is not conducive to the operation of the outer coil. In the embodiment, the insulation cylinder assembly 3 is formed into a ring type segmented cylindrical structure by axially splicing and combining a plurality of insulation sleeves 32, and the insulation sleeve 32 is provided with a plurality of second convex ridges 321 with gradually decreasing thickness from the middle to the two ends of the coil, so as to reserve sufficient buffer space for each section of the coil and avoid affecting the outer coil.

[0161] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application, and any reference signs in the claims should not be considered as limiting the claims.

[0162] The above embodiments only represent the implementation of the application, and the protection scope of the application is not limited to the above embodiments. For those skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which are all within the protection scope of the application.

Claims

1. A device for inserting a water-cooled magnet for a high-field hybrid magnet, characterized in that: Includes a container assembly and a magnet coil assembly disposed inside the container assembly; The container assembly includes an upper cylinder assembly, a container end cap, a hydraulic press assembly, a central tube assembly, an inner support assembly, a middle cylinder assembly, a lower cylinder assembly, and an electrical connection assembly. The container end cap is located on top of the upper cylinder assembly. The inner ring of the container end cap is connected to the outer ring of the hydraulic press assembly. The inner ring of the hydraulic press assembly is connected to the top of the central tube assembly. The top of the upper cylinder assembly is connected to the lower cylinder assembly through the middle cylinder assembly. The inner support assembly is located inside the upper cylinder assembly to support the magnet coil assembly and is electrically connected to it. Two electrical connection assemblies pass through the middle cylinder assembly and are electrically connected to the inner support assembly through a first conductive flexible connector. The middle cylinder assembly is provided with an installation window. The hydraulic press assembly includes a cylinder, piston, stop ring, pressure equalizing pad, first force transmission stop ring, first anti-rotation pin, second force transmission stop ring, second anti-rotation pin, first force transmission column, and second force transmission column. The piston is installed inside the cylinder. A stop ring and a pressure equalizing pad are installed at the bottom of the cylinder. The first force transmission stop ring and the second force transmission stop ring are installed at the bottom of the pressure equalizing pad. The first force transmission stop ring is connected to the cylinder through the first anti-rotation pin. The second force transmission stop ring is connected to the stop ring through the second anti-rotation pin. Multiple first force transmission columns are connected to the first force transmission stop ring. Multiple second force transmission columns are connected to the second force transmission stop ring. The first force transmission column is insulated from the innermost coil in the magnet coil assembly. The second force transmission column is insulated from the coil adjacent to the innermost coil.

2. A device for inserting a water-cooled magnet for a high-field hybrid magnet according to claim 1, characterized in that: The cylinder body is evenly distributed with first anti-rotation pin grooves, and the first force transmission stop ring is circumferentially provided with a first countersunk bolt connection hole. One end of the first anti-rotation pin is engaged in the first anti-rotation pin groove, and the other end is threadedly connected to the first countersunk bolt connection hole. The stop ring is evenly distributed with second anti-rotation pin grooves, and the second force transmission stop ring is circumferentially provided with a second countersunk bolt connection hole. One end of the second anti-rotation pin is engaged in the second anti-rotation pin groove, and the other end is threadedly connected to the second countersunk bolt connection hole.

3. A device for inserting a water-cooled magnet for a high-field hybrid magnet according to claim 1, characterized in that: The upper cylinder assembly includes an upper outer cylinder, an upper inner cylinder, a filter screen, a first end ring, a second end ring, a third end ring, and a main support plate; The upper outer cylinder and the upper inner cylinder are arranged at intervals to form a double-layer structure with a first high-pressure water inlet chamber. The top of the upper inner cylinder is provided with a waist-shaped hole, which allows the first high-pressure water inlet chamber to communicate with the inner cavity of the upper inner cylinder. A filter screen is provided on the waist-shaped hole. An insulating layer is solidified on the inner wall of the upper inner cylinder. The top of the double-layer structure is sealed and connected to the container end cap through a first end ring. A second end ring is provided on the inner wall of the middle part of the upper inner cylinder for fixing the outermost coil of the magnet coil assembly. The bottom of the double-layer structure is connected to the middle cylinder assembly through a third end ring. The third end ring is provided with an upper cylinder cooling water channel that communicates with the first high-pressure water inlet chamber. The main support plate for fixing the inner support assembly is connected to the center of the third end ring. Multiple fan-shaped through holes are provided on the main support plate in a circumferential array. The middle cylinder assembly includes an outer middle cylinder, an inner middle cylinder, an upper middle cylinder ring, a middle middle cylinder ring, a high-pressure water inlet pipe, a low-pressure water outlet pipe, a lower middle cylinder ring, and a lower middle cylinder cover. The outer cylinder and the inner cylinder are arranged at intervals to form a double-layer structure with a second high-pressure water inlet chamber. The top of the double-layer structure is sealed by the upper end ring of the middle cylinder and connected to the third end ring. The upper end ring of the middle cylinder is provided with a cooling water channel for the middle cylinder that communicates with the cooling water channel of the upper cylinder. The bottom of the double-layer structure is sealed by the middle end ring of the middle cylinder. The outer cylinder is provided with a high-pressure water inlet pipe, and the inner cylinder is provided with a low-pressure water outlet pipe. The inner cylinder is connected to the lower cylinder assembly through the lower end ring of the middle cylinder. The lower cover of the middle cylinder is sealed to the lower end ring of the middle cylinder to seal the inner cylinder. The electrical connection assembly passes through the outer cylinder and the inner cylinder in sequence and is electrically connected to the inner support assembly through the first conductive flexible connector. The lower cylinder assembly is a metal cylinder, with the top of the metal cylinder connected to the lower end ring of the middle cylinder, and an installation inlet is provided on the side wall of the metal cylinder.

4. A device for inserting a water-cooled magnet for a high-field hybrid magnet according to claim 3, characterized in that: The inner support assembly includes an inner support frame, a stop-insulating support plate, an anti-rotation stop-insulating frame, an electrical connection inlet, and an electrical connection outlet. The inner support frame has an I-shaped cross-section. The bottom of the inner support frame is fixed to the main support plate, and the top of the inner support frame is fixed with a stop-insulating support plate to support the magnet coil assembly. Multiple anti-rotation stop-insulating frames are spaced apart on the inner support frame along its height. One end of the electrical connection inlet is electrically connected to a set of first conductive flexible connectors, and the other end is electrically connected to the innermost coil of the magnet coil assembly. One end of the electrical connection outlet is electrically connected to another set of first conductive flexible connectors, and the other end is electrically connected to the outermost coil of the magnet coil assembly. Both the electrical connection inlet and the electrical connection outlet are connected to the anti-rotation stop-insulating frame. The inner support frame, the stop-insulating support plate, and the anti-rotation stop-insulating frame all have through-holes for cooling water. The electrical connection assembly includes an electrode connector, electrodes, an insulating positioning plate, an insulating ring, and an insulating sealing plate; The electrode connector passes through the outer cylinder and the inner cylinder of the middle cylinder and is fixed on the outer cylinder and the inner cylinder of the middle cylinder. An insulating ring is provided on the inner wall of the electrode connector. The electrode is fixed on the electrode connector by an insulating positioning plate and an insulating sealing plate and is electrically connected to the first conductive flexible connector after passing through the electrode connector. The central tube assembly includes a central tube, an upper pressure ring, and a metal end cap. The central tube passes through the magnet coil assembly and the cylinder body. The central tube is insulated from the innermost coil. The upper inner ring of the cylinder body is sealed to the top of the central tube via the upper pressure ring. The bottom of the central tube is sealed to the inner support assembly via the metal end cap.

5. A device for inserting a water-cooled magnet for a high-field hybrid magnet according to claim 4, characterized in that: The magnet coil assembly includes six coils A, B, C, D, E, and F, which are radially connected in series, and a first electrical connector; one end of the first electrical connector is electrically connected to the innermost coil A, and the other end is electrically connected to the electrical connector lead-in; the outermost coil F is electrically connected to the electrical connector lead-out. Coil A and coil B are insulated from each other by an insulating cylinder assembly; coil B and coil C, coil C and coil D, coil D and coil E, and coil E and coil F are insulated from each other by an insulating cylinder. Coil A and coil B are electrically connected via the AB electrical connection plate; coil B and coil C are electrically connected via the BC electrical connection plate; coil C and coil D are electrically connected via the CD electrical connection plate; coil D and coil E are electrically connected via the DE electrical connection plate; and coil E and coil F are electrically connected via the EF electrical connection plate. The AB electrical connection plate is insulated from the hydraulic press assembly. The BC, CD, DE, and EF electrical connection plates are all connected to the container assembly via an insulated anti-rotation structure. The anti-rotation structure includes an anti-rotation insulating plate, an anti-rotation metal cylinder, an anti-rotation metal threaded pin, and an anti-rotation insulating sleeve. The anti-rotation insulating plate is placed between the anti-rotation metal cylinder and the corresponding electrical connection plate. The end of the anti-rotation metal cylinder away from the electrical connection plate is connected to the container assembly. The threaded section of the anti-rotation metal threaded pin is threadedly connected to the corresponding electrical connection plate. The other end is fitted with an anti-rotation insulating sleeve, which passes through the anti-rotation insulating plate and is then inserted into the anti-rotation metal cylinder, resulting in an insulated connection between the anti-rotation metal threaded pin and the anti-rotation metal cylinder.

6. A device for inserting a water-cooled magnet for a high-field hybrid magnet according to claim 5, characterized in that: The insulating cylinder assembly is formed by axially splicing multiple insulating sleeves to form a cylindrical structure. Each insulating sleeve has a second protrusion on its inner and outer walls along the length of the insulating sleeve. There are cooling water channels between adjacent second protrusions. Each insulating sleeve has multiple second positioning protrusions along its length on its inner wall. The outer side of coil A is provided with a corresponding slot for engaging the second protrusion. The thickness of the second protrusions on the outer walls of adjacent insulating sleeves decreases sequentially from the middle of the insulating cylinder assembly towards both ends.

7. A device for inserting a water-cooled magnet for a high-field hybrid magnet according to claim 5, characterized in that: The insulating cylinder assembly is formed by circumferentially splicing multiple insulating sheets to form a cylindrical structure. Each insulating sheet has a first protrusion on its inner and outer walls along the length of the insulating sheet. The space between adjacent first protrusions is a cooling water channel. Each insulating sheet has a first positioning boss at both ends along its length on its inner wall. The first positioning bosses on adjacent insulating sheets fit together to form a boss group. A corresponding slot for engaging the boss group is provided on the outer side of coil A.

8. A device for inserting a water-cooled magnet for a high-field hybrid magnet according to claim 7, characterized in that: Coil A includes magnet coil A, coil end plate A, upper electrode cylinder of coil A, upper locking nut, upper anti-loosening screw, lower electrode cylinder of coil A, insulating collar, lower locking nut, lower anti-loosening nut, and transition connecting cylinder of coil A; The upper and lower ends of magnet coil A are connected to coil end plate A. One end of upper electrode cylinder A is connected to upper coil end plate A, and the other end is connected to coil B via AB electrical connection plate. Upper locking nut and upper anti-loosening screw are also provided on upper electrode cylinder A from bottom to top. Upper electrode cylinder A is connected to coil B via upper locking nut and upper anti-loosening screw. The end of first force transmission column away from first force transmission stop ring is insulated from AB electrical connection plate. One end of lower electrode cylinder A is connected to lower coil end plate A, and the other end is connected to coil transition connection cylinder A. One end of first electrical connector is connected between coil transition connection cylinder A and stop insulating support plate, and the other end is connected to electrical connector inlet. An insulating collar is fitted on the outer wall of the lower end of the lower electrode cylinder of coil A. A lower locking nut and a lower anti-loosening nut are provided outside the insulating collar. Multiple cooling channels for coil A are provided on the end plate of coil A, the upper electrode cylinder of coil A, and the lower electrode cylinder of coil A. A first limiting groove is provided on the outer circumference of the end plate of coil A, a second limiting groove is provided on the outer circumference of the upper electrode tube of coil A, and a positioning groove is provided on the outer circumference of the lower electrode tube of coil A. The first limiting groove, the second limiting groove, and the positioning groove are connected to form a locking groove for the locking boss assembly. The bottom of the positioning groove is in contact with the bottom surface of the boss assembly to support the insulating sheet.

9. A device for inserting a water-cooled magnet for a high-field hybrid magnet according to claim 8, characterized in that: The B coil includes a B magnet coil, a B coil end plate, a B fixing rod, an upper electrode cylinder of the B coil, a second conductive flexible connector, and a lower electrode cylinder of the B coil. The B magnet coil is fixed between the two sets of B coil end plates by the B fixing rod. One end of the upper electrode cylinder of the B coil is connected to the upper B coil end plate, and the other end is electrically connected to the AB electrical connection plate through the second conductive flexible connector. The upper electrode cylinder of the B coil is also electrically connected to the upper electrode cylinder of the A coil through the upper locking nut and the upper anti-loosening screw. The end of the second force transmission column away from the second force transmission stop ring passes through the AB electrical connection plate and is insulatedly connected to the upper electrode cylinder of the B coil. One end of the lower electrode cylinder of the B coil is connected to the lower B coil end plate, and the other end is electrically connected to the C coil through the BC electrical connection plate. The BC electrical connection plate is insulatedly connected to the inner support assembly through the insulating anti-rotation structure. Multiple B coil cooling channels are provided on the B coil end plate, the upper electrode cylinder of the B coil, and the lower electrode cylinder of the B coil.

10. A device for inserting a water-cooled magnet for a high-field hybrid magnet according to claim 9, characterized in that: The C coil includes a C magnet coil, a C coil end plate, a C fixing rod, an upper electrode cylinder of the C coil, and a lower electrode cylinder of the C coil; The C magnet coil is fixed between two sets of C coil end plates by a C fixing rod. One end of the upper electrode cylinder of the C coil is connected to the upper C coil end plate, and the other end is electrically connected to the D coil through the CD electrical connection plate. One end of the lower electrode cylinder of the C coil is connected to the lower C coil end plate, and the other end is electrically connected to the BC electrical connection plate. The CD electrical connection plate is connected to the container end cap through an insulating anti-rotation structure. Multiple C coil cooling channels are provided on the C coil end plate, the upper electrode cylinder of the C coil, and the lower electrode cylinder of the C coil. The D coil includes a D magnet coil, a D coil end plate, a D fixing rod, an upper electrode cylinder of the D coil, and a lower electrode cylinder of the D coil; The D magnet coil is fixed between two sets of D coil end plates by a D fixing rod. One end of the upper electrode cylinder of the D coil is connected to the upper D coil end plate, and the other end is electrically connected to the CD electrical connection plate. One end of the lower electrode cylinder of the D coil is connected to the lower D coil end plate, and the other end is electrically connected to the E coil through the DE electrical connection plate. The DE electrical connection plate is connected to the support assembly through an insulating anti-rotation structure. Multiple D coil cooling channels are provided on the D coil end plate, the upper electrode cylinder of the D coil, and the lower electrode cylinder of the D coil. The E coil includes the E magnet coil, the E coil end plate, the E fixing rod, and the EF electric connecting cylinder; The E-magnet coil is fixed between two sets of E-coil end plates by the E-fixing rod. One end of the EF electric connecting tube is connected to the upper E-coil end plate, and the other end is electrically connected to the F coil through the EF electric connecting plate. The lower E-coil end plate of the E-magnet coil is insulatedly connected to the support assembly. The EF electric connecting plate is connected to the container end cap through an insulated anti-rotation structure. Multiple E-coil axial cooling channels are provided on the E-coil end plate. The F coil includes the F magnet coil, F coil end plate, F fixing rod, F transition electrical connection ring, F lower insulation support anti-rotation cylinder, and reinforcing rod; The F magnet coil is fixed between two sets of F coil end plates by an F fixing rod. The upper F coil end plate is electrically connected to the EF electrical connection plate, and the lower F coil end plate is electrically connected to the electrical connection lead through an F transition electrical connection ring. The lower F coil end plate is fixedly connected to the upper cylinder assembly through an F lower insulating support anti-rotation cylinder. Multiple F coil axial cooling channels are provided on the F coil end plate. The F coil end plates at both ends are also connected to the ends of the F magnet coil near the F coil end plates via reinforcing rods; The F transition electrical connection ring has a cut along its axial direction, which makes the F transition electrical connection ring a non-closed ring.

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