Hydraulic mechanism for water-cooled magnet structure with high mechanical stability

Abstract

The invention discloses a hydraulic mechanism for a water-cooled magnet structure with high mechanical stability. The hydraulic mechanism comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, 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 water-cooled magnet has the advantages that axial stress application can be carried out on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, 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, and the high mechanical stability of the water-cooled magnet is improved.

Description

Technical Field

[0001] This invention relates to the field of water-cooled magnet technology, specifically a hydraulic mechanism for a water-cooled magnet structure with high mechanical stability. Background Technology

[0002] Strong magnetic fields are important extreme conditions, providing unique extreme environments for scientific research. The structure and transformation processes of matter within these environments can undergo changes, offering new avenues and opening up new avenues for research in physics, chemistry, materials science, and biology. Because higher magnetic field strength leads to greater changes in the electronic energy states of matter systems, it results in more unusual phenomena and provides more opportunities for scientific innovation. Therefore, steady-state strong magnetic field experimental facilities, as an effective method for obtaining high magnetic fields, have become an irreplaceable and crucial tool for conducting cutting-edge basic research in condensed matter physics, magnetism, materials science, chemistry, life sciences, and medicine.

[0003] Water-cooled magnets are the main experimental apparatus in steady-state high magnetic field laboratories. Due to their high magnetic field strength, fast excitation speed, and high experimental efficiency, they are a highly regarded extreme condition experimental platform. Water-cooled magnets have high magnetic field strengths, reaching up to 42T or more, and consume power in the tens of megawatts range. The water-cooled magnets use high-speed deionized cooling water to remove a large amount of Joule heat, ensuring that the magnet temperature remains normal.

[0004] A water-cooled magnet is a device that generates a magnetic field by connecting multiple water-cooled magnet coils in parallel or series and passing a certain current through them. During operation, the coils are in an extreme working state, generating extremely high-power heat and strong electromagnetic force. If the coils are not cooled effectively and in time, they will melt into a metal block instantly. If the electromagnetic force is not effectively and reliably withstood, the coil components may become misaligned, the coils may rotate inside the container, damaging the coils and the connections and supporting components between them, causing the device to malfunction.

[0005] Bitter-type water-cooled magnets have a structure completely different from traditional solenoids. To manufacture a bitter-type water-cooled magnet, numerous holes are first distributed between copper or copper alloy and insulating sheets. Hundreds or even thousands of copper sheets are then stacked to form a complete coil. Multiple coils of different specifications constitute the magnet. The advantage of this type of magnet is that high-pressure deionized water flows rapidly through the cooling holes, quickly carrying away the heat generated when the magnet is energized, resulting in excellent cooling. Simultaneously, because the magnet coil is a single, integral structure, it possesses strong mechanical properties. Therefore, water-cooled magnets using this principle can achieve a magnetic field of 420,000 gauss.

[0006] With the development of magnet technology, especially with magnetic field strength reaching 38.5T or higher, the clamping force of the magnet coil is insufficient under the action of strong electromagnetic force, resulting in misalignment, deformation or even damage of the bit plates on the magnet coil. Summary of the Invention

[0007] The technical problem to be solved by this invention is how to solve the problem of bit misalignment, deformation or even damage caused by insufficient clamping force of magnet coil, and improve the high mechanical stability of water-cooled magnet.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0009] A hydraulic mechanism for a high-mechanical-stability water-cooled magnet structure includes a cylinder, a piston, a stop ring, a pressure equalizing pad, a limiting block, a first force-transmitting stop ring, a first anti-rotation pin, a second force-transmitting stop ring, a second anti-rotation pin, a first force-transmitting column, and a second force-transmitting column. The piston and the limiting block are disposed within the cylinder. A stop ring and a pressure equalizing pad are disposed at the bottom of the cylinder. The first force-transmitting stop ring and the second force-transmitting stop ring are disposed at the bottom of the pressure equalizing pad. The first force-transmitting stop ring is connected to the cylinder via the first anti-rotation pin, and the second force-transmitting stop ring is connected to the stop ring via the second anti-rotation pin. Next, multiple first force transmission columns are connected to the first force transmission stop ring, and multiple second force transmission columns are connected to the second force transmission stop ring. The first force transmission columns are used for insulated connection with the innermost coil of the magnet coil assembly, and the second force transmission columns are used for insulated connection with the coil adjacent to the innermost coil of the magnet coil assembly. This pushes the piston to move downward, transmitting the hydraulic pressure to the pressure equalizing pad, and then to the first force transmission stop ring, the second force transmission stop ring, the first force transmission column, and the second force transmission column, thereby applying the hydraulic pressure to the two innermost coils of the magnet coil assembly.

[0010] This invention, through the setting of a hydraulic mechanism, can apply axial force to the magnet coil assembly, increase the clamping force on the magnet coil assembly, thereby improving the high mechanical stability of the water-cooled magnet, and further increasing the ability of the magnet coil assembly to resist external electromagnetic forces. It solves the problems of excessive radial expansion electromagnetic forces on the magnet coil bit plates and insulating plates during the operation of the water-cooled magnet, such as radial expansion and misalignment of the bit plates and insulating plates, blockage of water flow channels, and overheating or even melting of the coil, as well as the problem of the coil cracking and breaking due to excessive radial expansion forces causing the coil stress to exceed the limit.

[0011] Preferably, the cylinder body is evenly distributed with first anti-rotation pin grooves, 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.

[0012] Preferably, the stop ring is evenly distributed with second anti-rotation pin grooves, and the second force transmission stop ring is provided with a second countersunk bolt connection hole in the circumferential direction. 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.

[0013] Preferably, a first insulating sleeve is fitted on the top of the second force transmission column.

[0014] Preferably, a second insulating sleeve is fitted at the bottom of the first force transmission column.

[0015] Preferably, a third insulating sleeve is fitted at the bottom of the second force transmission column.

[0016] Preferably, a hydraulic medium input pipe is provided on the cylinder body.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention, through the setting of a hydraulic mechanism, can apply axial force to the magnet coil assembly, increase the clamping force on the magnet coil assembly, thereby improving the high mechanical stability of the water-cooled magnet, and further increasing the ability of the magnet coil assembly to resist external electromagnetic forces. It solves the problems of excessive radial expansion electromagnetic forces on the magnet coil bit plates and insulating plates during the operation of the water-cooled magnet, such as radial expansion and misalignment of the bit plates and insulating plates, blockage of water flow channels, and overheating or even melting of the coil, as well as the problem of the coil cracking and breaking due to excessive radial expansion forces causing the coil stress to exceed the limit. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the water-cooled magnet device in Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the container assembly in Embodiment 1 of the present invention;

[0021] Figure 3 This is another structural schematic diagram of the water-cooled magnet device in Embodiment 1 of the present invention;

[0022] Figure 4 This is a schematic diagram of the hydraulic mechanism in Embodiment 1 of the present invention;

[0023] Figure 5 This is an assembly diagram of the hydraulic mechanism and the central tube assembly in Embodiment 1 of the present invention;

[0024] Figure 6 This is a schematic diagram of the magnet coil assembly in Embodiment 1 of the present invention;

[0025] Figure 7 This is a schematic cross-sectional view of coil A and coil B in Embodiment 1 of the present invention;

[0026] Figure 8 This is a schematic diagram of the insulating cylinder assembly in Embodiment 1 of the present invention;

[0027] Figure 9 This is a schematic diagram of the insulating sheet structure in Embodiment 1 of the present invention;

[0028] Figure 10 This is an assembly diagram of coil A and coil B in Embodiment 1 of the present invention;

[0029] Figure 11This is a partial structural diagram of coil A and coil B in Embodiment 1 of the present invention;

[0030] Figure 12 This is another partial structural diagram of coil A and coil B in Embodiment 1 of the present invention;

[0031] Figure 13 This is a schematic diagram of the structure of the A coil end plate in Embodiment 1 of the present invention;

[0032] Figure 14 This is a schematic diagram of the structure of the electrode cylinder on the first A coil in Embodiment 1 of the present invention;

[0033] Figure 15 This is a schematic diagram of the structure of the electrode cylinder on the second A coil in Embodiment 1 of the present invention;

[0034] Figure 16 This is a schematic diagram of the structure of the lower electrode cylinder of the first A coil in Embodiment 1 of the present invention;

[0035] Figure 17 This is a schematic diagram of the structure of the lower electrode cylinder of the second A coil in Embodiment 1 of the present invention;

[0036] Figure 18 This is a schematic diagram of the insulating anti-rotation structure in Embodiment 1 of the present invention;

[0037] Figure 19 This is an assembly diagram of the insulating anti-rotation structure and the BC electrical connection plate in Embodiment 1 of the present invention;

[0038] Figure 20 This is a schematic diagram of the structure of the B coil end plate in Embodiment 1 of the present invention;

[0039] Figure 21 This is a schematic diagram of the structure of the electrode cylinder on the first B coil in Embodiment 1 of the present invention;

[0040] Figure 22 This is a schematic diagram of the structure of the upper electrode cylinder of the second B coil in Embodiment 1 of the present invention;

[0041] Figure 23 This is a schematic diagram of the structure of the lower electrode cylinder of the first B coil in Embodiment 1 of the present invention;

[0042] Figure 24 This is a schematic diagram of the structure of the lower electrode cylinder of the second B coil in Embodiment 1 of the present invention;

[0043] Figure 25 This is a schematic diagram of the C coil structure in Embodiment 1 of the present invention;

[0044] Figure 26 This is a schematic diagram of the C coil end plate in Embodiment 1 of the present invention;

[0045] Figure 27 This is a schematic diagram of the structure of the electrode cylinder on coil C in Embodiment 1 of the present invention;

[0046] Figure 28 This is a schematic diagram of the structure of the lower electrode cylinder of coil C in Embodiment 1 of the present invention;

[0047] Figure 29 This is a schematic diagram of the structure of coil E in Embodiment 1 of the present invention;

[0048] Figure 30 This is a schematic diagram of the structure of the E coil end plate in Embodiment 1 of the present invention;

[0049] Figure 31 This is a schematic diagram of the structure of coil F in Embodiment 1 of the present invention;

[0050] Figure 32 This is another structural schematic diagram of the F coil in Embodiment 1 of the present invention;

[0051] Figure 33 This is a schematic diagram of the structure of the F coil end plate in Embodiment 1 of the present invention;

[0052] Figure 34 This is a schematic diagram of the structure of the F-transition electrical connector in Embodiment 1 of the present invention;

[0053] Figure 35 This is a partial structural schematic diagram of the magnet coil assembly in Embodiment 1 of the present invention;

[0054] Figure 36 This is a schematic diagram of the insulating cylinder assembly in Embodiment 2 of the present invention;

[0055] Figure 37 This is a top view of the insulating cylinder assembly in Embodiment 2 of the present invention;

[0056] Figure 38 This is a partial schematic diagram of the insulating cylinder assembly in Embodiment 2 of the present invention. Detailed Implementation

[0057] To facilitate understanding of the technical solution of the present invention by those skilled in the art, the technical solution of the present invention will now be further described in conjunction with the accompanying drawings.

[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0060] Example 1

[0061] See Figure 1 This embodiment discloses a water-cooled magnet device, including a container assembly 1 and a magnet coil assembly 2. The magnet coil assembly 2 is located inside the container assembly 1 and communicates with the container assembly 1.

[0062] See Figure 2 and Figure 3 The container assembly 1 includes a cylindrical wall assembly 11, a container top cover assembly 12, a hydraulic mechanism 13, a central tube assembly 14, a container bottom cover 15, support leg assemblies 16, and electrical connection assemblies 17. The top of the cylindrical wall assembly 11 is covered by the container top cover assembly 12 and the hydraulic mechanism 13, and the bottom of the cylindrical wall assembly 11 is covered by the container bottom cover 15. Four support leg assemblies 16 are evenly arranged at the bottom of the container bottom cover 15. The bottom of the magnet coil assembly 2 is insulated from the top of the container bottom cover 15, and the top of the magnet coil assembly 2 is insulated from the bottom of the container top cover assembly 12 and the hydraulic mechanism 13. Multiple electrical connection assemblies 17 penetrate the cylindrical wall assembly 11 and are electrically connected to the magnet coil assembly 2.

[0063] The cylinder wall assembly 11 includes an inner cylinder 111, an outer cylinder 112, a filter screen 113, an insulation layer 114, a first connecting plate 115, a second connecting plate 116, and a partition plate 117. The inner cylinder 111 and the outer cylinder 112 are arranged at intervals. The top ends of the inner cylinder 111 and the outer cylinder 112 are connected by the first connecting plate 115, and the bottom ends are connected by the second connecting plate 116. The partition plate 117 connects the middle part between the inner cylinder 111 and the outer cylinder 112. The first connecting plate 115, the inner cylinder 111, the outer cylinder 112, and the partition plate are also included. A high-pressure water inlet chamber is formed by the first connecting plate 117, the second connecting plate 116, the inner cylinder 111, the outer cylinder 112, and the partition plate 117. A low-pressure water outlet chamber is formed by the second connecting plate 116, the inner cylinder 111, the outer cylinder 112, and the partition plate 117. High-pressure water enters through the high-pressure water inlet chamber, passes through the magnet coil assembly 2, and then flows out through the low-pressure water outlet chamber. A filter screen 113 is installed at the inlet of the high-pressure water inlet chamber to prevent impurities in the cooling water from entering the magnet coil assembly 2, ensuring the safe operation of the water-cooled magnet. An insulating layer 114 is solidified on the inner wall of the inner cylinder for insulation from the magnet coil assembly 2. Specifically, high-pressure cooling water enters the space above the magnet coil assembly 2 inside the inner cylinder 111 through the inlets of the symmetrical high-pressure water inlets on both sides of the filter screen 113, then enters the magnet coil assembly 2, flows downwards into each coil, enters the space below the magnet coil assembly 2, and finally flows out through the low-pressure water outlet chamber.

[0064] In this embodiment, the outer wall of the outer cylinder 112 has a drain hole 1121, an exhaust hole 1122, and a signal line hole 1123. The upper and lower ends of the outer cylinder 112 are respectively provided with four electrical connection pipes 1124. The four electrical connection pipes 1124 at the upper end are sealed and connected by countersunk screws, sealing rings, and reserved electrical connection pipe sealing plates. The four electrical connection pipes 1124 at the lower end are sealed and connected to the electrical connection assembly 17 by countersunk screws and sealing rings. The electrical connection assembly 17 passes through the inner cylinder 111 and the outer cylinder 112 and is electrically connected to the magnet coil assembly 2. The electrical connection assembly 17 consists of a transition electrical connection rod, a transition electrical connection rod locking nut, a transition electrical connection rod insulating sealing plate, and a transition electrical connection rod insulating cylinder.

[0065] See also Figure 2 The container top cover assembly 12 includes a first container top cover 121 and a second container top cover 122. The first container top cover 121 is a stepped annular plate. The edge of the first container top cover 121 is connected to the top surface of the first connecting plate 115. The inner ring of the first container top cover 121 is sealed to the outer ring of the second container top cover 122. The second container top cover 122 is a U-shaped stepped annular plate with a large span and depth. The inner ring of the second container top cover 122 is sealed to the hydraulic mechanism 13. The first container top cover 121 is provided with 6 evenly distributed signal lines and vent holes, which can be used to lead out signal lines to monitor the operating status of the magnet coil assembly 2, and can also monitor the air discharged from the device when the magnet coil assembly 2 is first filled with water. Unused holes are sealed to the first container top cover 121 with sealing plates, countersunk screws, and sealing rings.

[0066] In this embodiment, by setting the container top cover assembly 12 with a large-span, large-depth U-shaped sunken top cover structure of the first container top cover 121 and the second container top cover 122, it can be compatible with more specifications of experimental and scientific research equipment and improve the axial dimension margin of the magnet coil assembly 2. Because the distance from the upper end face of the magnet center tube to the axial center face of the magnet coil in conventional experimental and scientific research equipment is usually about 650mm, the higher the magnetic field and the greater the current of the high-strength water-cooled magnet, the larger the axial dimension of the magnet coil and each supporting connector is required.

[0067] In addition, the first connecting plate 115 is fixedly connected to the first container top cover 121, the first container top cover 121 is fixedly connected to the second container top cover 122, the second container top cover 122 is fixedly connected to the hydraulic mechanism 13, and the second connecting plate 116 is fixedly connected to the container bottom cover 15 by positioning pins and bolts. Since the container top cover assembly 12, the hydraulic mechanism 13 and the container bottom cover 15 are composed of multiple parts, and the weight of a single part is relatively large, in this embodiment, positioning pins are used for pin connection, which facilitates the assembly of the container top cover assembly 11 and the container bottom cover 15 and ensures the installation accuracy.

[0068] See Figure 4The hydraulic mechanism 13 includes a cylinder body 1301, a piston 1302, a stop ring 1303, a pressure equalizing pad 1304, a limit 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 upper inner ring of the cylinder body 1301 is sealed to the top of the central tube assembly 14, and the upper outer ring of the cylinder body 1301 is connected to the inner ring of the second container cover 122. A piston is installed inside the cylinder body 1301. The piston 1302 and the limiting block 1305 are used to limit the movement of the piston 1302 within the cylinder body 1301. A stop ring 1303 and a pressure equalizing pad 1304 are provided at the bottom of the cylinder body 1301. A first force-transmitting stop ring 1306 and a second force-transmitting stop ring 1308 are provided at the bottom of the pressure equalizing pad 1304. First anti-rotation pin grooves are evenly distributed on the cylinder body 1301. A first countersunk bolt connection hole is provided circumferentially on the first force-transmitting stop ring 1306. One end of the first anti-rotation pin 1307 is engaged in the first anti-rotation pin groove on the cylinder body 1301, and the other end is connected to the first force-transmitting stop ring 1308. The first countersunk bolt connection hole on the 306 is threaded to restrict the rotation of the first force transmission stop ring 1306. The stop ring 1306 has evenly distributed second anti-rotation pin grooves. The second force transmission stop ring 1308 has a second countersunk bolt connection hole circumferentially arranged. One end of the second anti-rotation pin 1309 is engaged in the second anti-rotation pin groove on the stop ring 1306, and the other end is threaded to the second countersunk bolt connection hole on the second force transmission stop ring 1308 to restrict the rotation of the second force transmission stop ring 1308. Multiple first force transmission columns 1311 are connected to the first force transmission stop ring 1306. One end of the column 1311 away from the first force transmission stop ring 1306 is insulated from the innermost coil of the magnet coil assembly 2. Multiple second force transmission columns 1312 are connected to the second force transmission stop ring 1307, and a first insulating sleeve 1310 is provided at the position where the second force transmission column 1312 is connected to the second force transmission stop ring 1307 for insulation. One end of the second force transmission column away from the second force transmission stop ring 1307 is insulated from the coil adjacent to the innermost coil of the magnet coil assembly 2. An insulating plate 1313 is also provided between the magnet coil assembly 2 and the first force transmission stop ring 1306 for insulation.

[0069] Furthermore, a second insulating sleeve 1314 is fitted at the position where the bottom of the first force transmission column 1311 is insulated from the innermost coil of the magnet coil assembly 2, for insulation between the first force transmission column 1311 and the magnet coil assembly 2. A third insulating sleeve 1315 is fitted at the bottom of the second force transmission column 1312 for insulation between the second force transmission column 1312 and the magnet coil assembly 2.

[0070] Furthermore, a hydraulic medium input pipe 1316 is provided on the cylinder body 1301 for inputting hydraulic medium into the cylinder body 1301.

[0071] Specifically, by pushing the piston 1302 downward, the 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, thereby applying the hydraulic pressure to the two innermost coils of the magnet coil assembly 2.

[0072] In this embodiment, the hydraulic mechanism 13 can apply axial force to the magnet coil assembly 2, resulting in high mechanical stability and increased clamping force on the magnet coil assembly 2. This enhances the high mechanical stability of the water-cooled magnet and increases the magnet coil assembly 2's ability to resist external electromagnetic forces. This solves the problems of excessive radial expansion electromagnetic forces on the magnet coil bit plates and insulating plates during water-cooled magnet operation, leading to radial expansion and misalignment of the bit plates and insulating plates, blockage of the water flow channel, and overheating or even melting of the coil. It also addresses the problem of excessive radial expansion forces causing the coil stress to exceed limits, resulting in cracking and damage.

[0073] See Figure 5 The central tube assembly 14 includes a central tube 141, an upper pressure cap 142, and a lower pressure cap 143. The central tube 141 passes through the magnet coil assembly 2, the cylinder 1301, and the container bottom cover 15. The central tube 141 is insulated from the innermost coil of the magnet coil assembly 2 by an insulating sleeve. The upper inner ring of the cylinder 1301 is sealed to the outer top of the central tube 141 by the upper pressure cap 142. The inner ring of the container bottom cover 15 is sealed to the outer bottom of the central tube 141 by the lower pressure cap 143. In this embodiment, the central tube 141 is a hollow metal tube with an insulating layer wrapped around its outer surface. The insulating layer is made of high-strength glass fiber and epoxy resin, which is integrally cured onto the outer wall of the metal tube. Multiple evenly distributed grooves are machined into the outer wall to serve as cooling water channels. This structure has good insulation and strong structural stability. In contrast, the traditional method of bonding insulating strips is prone to detachment, and the detached material may block the cooling channels.

[0074] The container bottom cover 15 is an integral structure with an upward convex shape. It extends the top and bottom of the cylinder wall assembly 11 upward and downward as usual, and connects it with the container top cover assembly 12 and the container bottom cover 15. This expands the top and bottom space inside the container assembly 1, and increases the installation space and flow space of the magnet coil assembly 2 to meet the heat dissipation requirements and axial dimension requirements of the magnet coil. Furthermore, the container top cover assembly 12 is set in a sunken shape, and the container bottom cover 15 is set in an upward convex shape, which can reduce the axial deformation of the container top cover assembly 12 and the container bottom cover 15, especially in the central part.

[0075] The outer circumference of the container bottom cover 13 is provided with symmetrical hoisting threaded holes for the installation, maintenance and hoisting of water-cooled magnets.

[0076] See also Figure 3 The support leg assembly 16 includes a support leg 161 and a support ear 162. The upper end of the support leg 161 is vertically fixed to the outer wall of the outer cylinder 112 through the support ear 162, and the lower end is connected to the ground anchor stud through a nut, which is used to fix the water-cooled magnet to the ground.

[0077] See Figure 6 The 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 inner cylinder 111; 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.

[0078] 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, as well as a first electrical connector 27 and a second electrical connector 28. 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 one of the sets of electrical connection components 17. One end of the second electrical connector 28 is electrically connected to the outermost coil F 26, and the other end is electrically connected to another set of electrical connection components 17.

[0079] 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 mechanism 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.

[0080] See Figure 7 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.

[0081] See Figure 8 and Figure 9The 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).

[0082] See Figures 10 to 12 The A coil 21 includes an A magnet coil 211, an A coil end plate 212, an A coil upper electrode cylinder 213, an upper locking nut 214, an upper anti-loosening nut, an A coil lower electrode cylinder 215, an insulating collar 216, a lower locking nut 217, a lower anti-loosening nut, and an A coil transition connecting cylinder 218. The A coil upper electrode cylinder 213 includes a first A coil upper electrode cylinder 2131 and a second A coil upper electrode cylinder 2132 connected together. The A coil lower electrode cylinder 215 includes a first A coil lower electrode cylinder 2151 and a second A coil lower electrode cylinder 2152 connected together.

[0083] The upper and lower ends of magnet coil 211 are connected to coil end plate 212. The end of the first upper electrode cylinder 2131 of coil A, away from the second upper electrode cylinder 2132 of coil A, is connected to the upper end of coil A end plate 212. The end of the second upper electrode cylinder 2132 of coil A, away from the first upper electrode cylinder 2131 of coil A, is electrically connected to coil B 22 via AB electrical connection plate 4. An upper locking nut 214 and an upper anti-loosening nut are also provided on the upper electrode cylinder 2132 of coil A from bottom to top, and the upper electrode cylinder 2132 of coil A is electrically connected to coil B 22 via the upper locking nut 214 and the upper anti-loosening nut. The end of the first force transmission column 1311, away from the first force transmission stop ring 1306, is connected to AB via a hydraulic insulating sleeve. The electrical connection plate 4 is insulated. The end of the first A coil lower electrode cylinder 2151 away from the second A coil lower electrode cylinder 2152 is connected to the lower A coil end plate 212. The end of the second A coil lower electrode cylinder 2152 away from the first A coil lower electrode cylinder 2151 is insulatedly connected to the container bottom cover 15 through the A coil transition connection cylinder 218. An insulating collar 216 is also sleeved on the lower outer wall of the second A coil lower electrode cylinder 2152 for insulation from the B coil 22. A lower locking nut 217 and a lower anti-loosening nut are provided outside the insulating collar 216 for locking the A coil lower electrode cylinder 215. The end of the first electrical connector 27 extending into the cylinder wall assembly 11 is electrically connected to the A coil transition connection cylinder 218.

[0084] See Figures 13 to 17Multiple A-coil cooling channels are provided on the A-coil end plate 212, the A-coil upper electrode cylinder 213, and the A-coil lower electrode cylinder 215. Multiple A-coil axial cooling channels 2121 are provided on the A-coil end plate 212, the first A-coil upper electrode cylinder 2131, and the first A-coil lower electrode cylinder 2151. Multiple A-coil lateral cooling channels 21321 are provided on the second A-coil upper electrode cylinder 2132 and the second A-coil lower electrode cylinder 2152.

[0085] Multiple radial threaded holes on the upper electrode cylinder 2132 of the second A coil are used to fasten the AB electrical connection plate 4 with screws. The upper electrode cylinder 2132 of the second A coil 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 from the B coil 22 to the A coil 21 through the upper locking nut 214 and the upper anti-loosening nut, and at the same time realizes the electrical connection between the A coil 21 and the B coil 22. The pressure bearing surface 2 is used to bear the hydraulic pressure transmitted from the hydraulic mechanism 13 to the insulating plate 1313. Multiple axial holes are provided on it for installing the hydraulic insulating sleeve. The pressure bearing surface 3 is the connection surface between the upper electrode cylinder 2132 of the second A coil and the upper electrode cylinder 2131 of the first A coil.

[0086] The first A coil lower electrode cylinder 2151 has multiple circumferential grooves and an axial cooling channel 2121 for the A coil on both ends of its large diameter end to increase the cooling water flow. The small diameter end face has multiple threaded holes for circumferential positioning with the second A coil lower electrode cylinder 2152 via threaded cylindrical pins. The first A coil lower electrode cylinder 2151 is shaped like a flared mouth to enhance the internal water flow channel of the A coil 21. The second A coil lower electrode cylinder 2152 has 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 collar 216 to achieve lower insulation between the A coil 21 and the B coil 22, and to withstand the force transmitted from the B coil 22 to the A coil 21 through the lower locking nut 217 and the lower anti-loosening nut. The pressure-bearing surface 5 is used to withstand the hydraulic pressure applied by the hydraulic mechanism 13, and multiple axial holes are provided on it for installing and securing the A coil transition connecting cylinder 218. The pressure-bearing surface 6 is the connection surface between the first A coil lower electrode cylinder 2151 and the second A coil lower electrode cylinder 2152.

[0087] A first limiting groove 2122 is provided on the outer circumference of the A coil end plate 212, a second limiting groove 21311 is provided on the outer circumference of the upper electrode cylinder 2131 of the first A coil, and a positioning groove 21511 is provided on the outer circumference of the lower electrode cylinder 2151 of the first A coil. The first limiting groove 2122, the second limiting groove 21311 and the positioning groove 21511 are connected to form a locking groove for engaging a boss group composed of two first positioning bosses 312. The positioning groove 21511 is stepped. The bottom of the positioning groove 21511 is in contact with the bottom surface of the boss group to serve as a limiting function, so that the insulating sheet 31 will not move downward when the high-pressure cooling water is flushed down, thereby supporting the insulating sheet 31 and finally supporting the insulating cylinder assembly 3, preventing the insulating cylinder assembly 3 from moving up and down. The insulating cylinder assembly 3 achieves insulation between the magnet coils in the A coil 21 and the B coil 22.

[0088] It should be noted that traditional insulating cylinders are integral, with multiple ridges distributed on both the inner and outer walls. Cooling water channels exist between adjacent ridges, and each ridge adheres to the circumferential sidewall of the coil, ensuring sufficient cooling water flow channels between the inner wall of the insulating cylinder and the internal coil, and between the outer wall and the outer coil. However, in this embodiment, coil A 21 and coil B 22 are electrically connected in series. Coil A 21 lacks a fixing rod and cannot be positioned or secured on its own. During the operation of the water-cooled magnet device, the coil rotates circumferentially due to electromagnetic force. Therefore, the coil must be positioned; otherwise, the rotation will cause misalignment and blockage of the cooling holes, resulting in the coil's heat not being carried away by the cooling water in time and causing it to burn out. Using a traditional insulating cylinder, it is impossible to position coil A 21.

[0089] In this embodiment, the protrusions on the inner wall of each insulating sheet 31 are correspondingly engaged in the first limiting groove 2122, the second limiting groove 21311, and the positioning groove 21511, so that the electromagnetic rotational force of the coil is transmitted to the A coil end plates 212 at both ends of the A magnet coil 211. The A coil end plates 212 transmit the force to the hydraulic mechanism 13 and the container bottom cover 15 through the upper electrode cylinder 213 and the lower electrode cylinder 215 of the A coil, respectively, thereby preventing the rotation of the A magnet coil 211 and realizing the control of the A magnet coil 211. The insulating cylinder assembly 3 in this embodiment not only provides insulation but also replaces the fixing rod to position the A magnet coil 211. Furthermore, the removal of the fixing rod makes the slot on the bit plate of the A magnet coil 211 smaller than the previous fixing hole used to fix the fixing rod. The current density distribution of the bit plate is inversely proportional to the radius. The insulating sheet 31 is placed in the low current density region of the bit plate, increasing the current carrying capacity and improving the magnetic field strength.

[0090] In addition, considering that the assembly gap should be as small as possible, but the radial expansion force and deformation during the operation of the water-cooled magnet device and the actual engineering situation (the coil itself is made up of thousands of conductor sheets stacked together, and the inner and outer diameters deviate from the ideal value), the implementation space of the insulating cylinder is only 1.6mm. If the insulating cylinder assembly 3 in this embodiment is installed as an integral insulating cylinder, due to the small implementation space and the fact that the insulating cylinder also needs to play a positioning role, the positioning requires tight assembly. If the gap is too large, it will not play a positioning role, which will make the installation of the integral insulating cylinder extremely difficult, and it may even be impossible to fit the insulating cylinder into the outer wall of the A magnet coil 211. In this embodiment, a segmented insulating cylinder assembly 3 composed of multiple insulating sheets 31 is used. The insulating sheets 31 are fitted onto the outer wall of the A coil 21 one by one, which not only greatly reduces the installation difficulty, but also achieves a good tight assembly effect.

[0091] See also Figures 10 to 12 The B coil 22 includes a B magnet coil 221, a B coil end plate 222, a B fixing rod 223, a B coil upper electrode cylinder 224, a conductive flexible connector 225, and a B coil lower electrode cylinder 226. The B coil upper electrode cylinder 224 includes a first B coil upper electrode cylinder 2241 and a second B coil upper electrode cylinder 2242 connected to each other. The B coil lower electrode cylinder 226 includes a first B coil lower electrode cylinder 2261 and a second B coil lower electrode cylinder 2262 connected to each other.

[0092] The B magnet coil 221 is fixed between the two sets of B coil end plates 222 by the B fixing rod 223. The end of the first B coil upper electrode cylinder 2241 away from the second B coil upper electrode cylinder 2242 is connected to the upper B coil end plate 222. The end of the second B coil upper electrode cylinder 2242 away from the first B coil upper electrode cylinder 2241 is electrically connected to the AB electrical connection plate 4 through the conductive flexible connector 225. At the same time, the second B coil upper electrode cylinder 2242 is also electrically connected to the second A coil upper electrode cylinder 2132 through the upper locking nut 214 and the upper anti-loosening nut. The end of the second force transmission column 1312 away from the second force transmission stop ring 1307 passes through the AB electrical connection plate 4 and is insulatedly connected to the upper electrode cylinder 2242 of the second B coil through the hydraulic insulating sleeve. The end of the lower electrode cylinder 2261 of the first B coil away from the lower electrode cylinder 2262 of the second B coil is connected to the lower end plate 222 of the B coil. The end of the lower electrode cylinder 2262 of the second B coil away from the lower electrode cylinder 2261 of the first B coil is electrically connected to the C coil 23 through the BC electrical connection plate 5. The BC electrical connection plate 5 is insulatedly connected to the bottom cover 15 of the container through the insulating anti-rotation structure 9.

[0093] See Figure 18The insulating anti-rotation structure 9 includes an anti-rotation insulating plate 91, an anti-rotation metal cylinder 92, an anti-rotation metal threaded pin 93, and an anti-rotation insulating sleeve 94. The anti-rotation insulating plate 91 is disposed between the anti-rotation metal cylinder 92 and the corresponding electrical connection plate. One end of the anti-rotation metal cylinder 92 away from the electrical connection plate is connected to the container assembly 1. The threaded section of the anti-rotation metal threaded pin 93 is threadedly connected to the corresponding electrical connection plate, and the other end is fitted with an anti-rotation insulating sleeve 94, which passes through the anti-rotation insulating plate 91 and is then inserted into the anti-rotation metal cylinder 92, resulting in an insulated connection between the anti-rotation metal threaded pin 93 and the anti-rotation metal cylinder 92. Specifically... Figure 19 Taking the connection between the insulating anti-rotation structure 9 and the BC electrical connection plate 5 as an example, the BC electrical connection plate 5 is connected to the B coil 22 and the C coil 23 respectively by screws. The anti-rotation insulating plate 91 and the anti-rotation metal cylinder 92 are sequentially arranged on the bottom surface of the BC electrical connection plate 5. The threaded section of the anti-rotation metal threaded pin 93 is threadedly connected to the BC electrical connection plate 5, and the other end is fitted with an anti-rotation insulating sleeve 94, which passes through the anti-rotation insulating plate 91 and is then inserted into the anti-rotation metal cylinder 92. Furthermore, the anti-rotation metal cylinder 92 is provided with multiple cooling water channels.

[0094] It should be noted that existing insulating anti-rotation mechanisms all use cylindrical insulating anti-rotation components. The water-cooled magnet will generate a maximum electromagnetic torque of 9896 N*m during actual operation. Each coil transmits the circumferential electromagnetic force to the insulating anti-rotation component structure through the electrical connection plate, and then the insulating anti-rotation component structure transmits the circumferential rotational force to the container assembly 1. Therefore, the insulating anti-rotation component structure needs to withstand the circumferential electromagnetic rotational force to prevent the coil from rotating. Currently, to achieve insulation, the insulating anti-rotation component structure is made of insulating composite material, with multiple pin holes at both ends. One end of the insulating anti-rotation component structure is connected to the electrical connection plate after a pin is inserted into the pin hole, and the other end is connected to the container assembly 1 after a pin is inserted into the pin hole, thereby transmitting the rotational force to the container assembly 1. In addition, to achieve cooling, multiple through cooling holes are opened along the circumference of the cylindrical insulating anti-rotation component structure. Due to the multiple pin holes and cooling holes on the insulating anti-rotation component structure, the strength of the insulating composite material of the cylindrical insulating anti-rotation component structure is greatly reduced. When the water-cooled magnet is running, it cannot withstand the strong electromagnetic rotational force, resulting in damage to the electrical connection plate and coil. In this embodiment, both the anti-rotation metal cylinder 92 and the anti-rotation metal threaded pin 93 are made of metal. One end of the anti-rotation metal threaded pin 93 is insulated from the anti-rotation metal cylinder 92, and the other end passes through the anti-rotation insulating plate 91 and connects to the electrical connection plate, thus forming a rigid connection between the electrical connection plate and the anti-rotation metal cylinder 92. At the same time, the anti-rotation insulating plate 91, which is set between the anti-rotation metal cylinder 92 and the corresponding electrical connection plate, plays an insulating role. The circumferential electromagnetic rotational force generated by the water-cooled magnet during actual operation is transmitted to the anti-rotation metal threaded pin 93 through the electrical connection plate and then to the anti-rotation metal cylinder 92. The circumferential rotational force is then transmitted to the container assembly 1 through the anti-rotation metal cylinder 92. The transmission of the circumferential electromagnetic rotational force is a rigid connection. The anti-rotation metal cylinder 92 replaces the insulating anti-rotation component structure of the insulating composite material in the prior art. By leveraging the high strength of the metal itself, the anti-rotation metal cylinder 92 solves the problem of insufficient strength in the traditional structure, thereby preventing damage to the electrical connection plate and the coil.

[0095] Furthermore, multiple connection holes are provided on both the upper and lower end faces of the anti-rotation insulating plate 91, and the anti-rotation metal cylinder 92 and the corresponding electrical connection plate are connected by bolts.

[0096] Furthermore, multiple anti-spin lateral cooling channels 921 are provided on the circumferential side of the anti-spin metal cylinder 92, and a first anti-spin circumferential cooling channel 922 is provided on the end face of the anti-spin metal cylinder 92 near the anti-spin insulating plate 91 for the flow of cooling water.

[0097] Furthermore, the anti-spin insulation plate 91 is provided with a second anti-spin circumferential cooling channel 911 that communicates with the first anti-spin circumferential cooling channel 922.

[0098] See Figures 20 to 24Multiple B-coil cooling channels are provided on the B-coil end plate 222, the B-coil upper electrode cylinder 224, and the B-coil lower electrode cylinder 226. Specifically, multiple axial cooling channels 2221 are provided on the B-coil end plate 222, the first B-coil upper electrode cylinder 2241, and the first B-coil lower electrode cylinder 2261, while multiple lateral cooling channels 22421 are provided on the second B-coil upper electrode cylinder 2242 and the second B-coil lower electrode cylinder 2262.

[0099] Furthermore, the fixing rod 223 is fastened between the two B coil end plates 222 by an insulating pad, a disc-shaped washer, a metal washer, and a nut. The fixing rod 223 is made of a metal flat rod with an insulating layer cured by glass fiber and epoxy resin. The metal flat rod and the insulating layer have good integrity and stable insulation performance. The fixing rod 223 is threaded at both ends to lock the B magnet coil 221. The electrical insulation between the fixing rod 223 and the upper electrode cylinder 224 and the lower electrode cylinder 226 of the B coil is achieved by an insulating tube. The insulating tube is a heat shrink tube. The heat shrink tube is put on the outside of the fixing rod 223, the insulating pad, the disc-shaped washer, the metal washer, and the nut. The heat shrink tube is heated by a heating tool, and the heat shrink tube shrinks and tightens, which can save space, improve the cooling water channel, and meet the electrical insulation requirements.

[0100] The B coil end plate 222 is provided with multiple evenly distributed fixing rod holes and circumferential grooves; the first B coil upper electrode cylinder 2241 is provided with multiple cooling grooves and fixing rod holes, and adopts a flared structure to increase the cooling water channel; the first B coil upper electrode cylinder 2241 is provided with multiple threaded holes at the small end for connecting the second B coil upper electrode cylinder 2242; the first B coil lower electrode cylinder 2261, in addition to the same arrangement as the first B coil upper electrode cylinder 2241, is provided with multiple first insulating cylinder support platforms 22611 for supporting the insulating cylinders between the B coil 22 and the C coil 23, and cooling water channels between adjacent first insulating cylinder support platforms 22611; the second B coil upper electrode cylinder 2242 is provided with multiple light holes, force transmission holes, and threaded holes. The multiple light holes are fastened to the first B coil upper electrode cylinder 2241 by countersunk screws, and the multiple threaded holes are used to connect the conductive flexible connector 225 to realize A The electrical connection between coil 21 and coil B 22 includes multiple force transmission holes for inserting a hydraulic insulating sleeve, enabling the hydraulic pressure of the hydraulic mechanism 13 to be applied to coil B 22 and achieving insulation between coil B 22 and the hydraulic mechanism 13. The upper electrode cylinder 2242 of the second coil B is provided with upper locking nut threads and upper anti-loosening nut threads, which are respectively used to install upper locking nut 214 and upper anti-loosening nut for upper locking of coil A 21 and electrical connection of coil A 21. Compared with the upper electrode cylinder 2242 of the second coil B, the lower electrode cylinder 2262 of the second coil B is also provided with lower locking nut threads and lower anti-loosening nut threads, which are respectively used to install lower locking nut 217, lower anti-loosening nut and insulating sleeve 216 for lower locking of coil A 21 and electrical insulation of coil A 21. The lower electrode cylinder 2262 of the second coil B is provided with threaded holes for connecting coil B to BC connecting plate 5, achieving electrical connection between coil B 22 and coil C 23.

[0101] In this embodiment, the conductive flexible connector 225 is composed of multiple overlapping copper sheets with a thickness on the order of micrometers. The holes at both ends are pressed together to form a single structure. When the water-cooled magnet device is running, the hydraulic mechanism 13 applies pressure to coils A 21 and B 22, causing changes in coil height. The flexible connector can be stretched and compressed, ensuring a stable electrical connection between coils A 21 and B 22. Therefore, the electrical connection between coils A 21 and B 22 employs a two-way parallel technology: the first conductive path is connected via the upper locking nut 214 and the upper anti-loosening nut, and the second path is connected via the conductive flexible connector 225. This enables a larger current to be transmitted stably within a compact space. Furthermore, during the operation of the water-cooled magnet device, when coils A 21 and B 22 experience differences in compression under the influence of electromagnetic force and hydraulic pressure from the hydraulic mechanism 13, the conductive flexible connector 225 ensures a stable electrical connection even with varying compression levels.

[0102] In addition, in this embodiment, the disc-shaped pad is composed of multiple disc springs, and the coil fastening can provide a large preload for coil B 22, so that the electrical connection of each part of the coil can still be guaranteed when the water-cooled magnet device is running.

[0103] See Figures 25 to 28 The C coil 23 includes a C magnet coil 231, a C coil end plate 232, a C fixing rod 233, an upper electrode cylinder 234, and a lower electrode cylinder 235.

[0104] C magnet coil 231 is fixed between two sets of C coil end plates 232 by C fixing rod 233. One end of C coil upper electrode cylinder 234 is connected to the upper C coil end plate 232, and the other end is electrically connected to D coil 24 through CD electrical connection plate 6. One end of C coil lower electrode cylinder 235 is connected to the lower C coil end plate 232, and the other end is electrically connected to BC electrical connection plate 5. CD electrical connection plate 6 is insulatedly connected to container top cover assembly 12 through insulating anti-rotation structure 9. Specifically, CD electrical connection plate 6 is connected to C coil 23 and D coil 24 respectively by screws. Anti-rotation insulating plate 91 and anti-rotation metal cylinder 92 are arranged sequentially from bottom to top on the top surface of CD electrical connection plate 6. The threaded section of anti-rotation metal threaded pin 93 is threadedly connected to CD electrical connection plate 6, and the other end is fitted with anti-rotation insulating sleeve 94, which passes through anti-rotation insulating plate 91 and is inserted into anti-rotation metal cylinder 92.

[0105] Multiple C-coil cooling channels are provided on the C-coil end plate 232, the C-coil upper electrode cylinder 234, and the C-coil lower electrode cylinder 235. Among them, multiple C-coil axial cooling channels 2321 are provided on the C-coil end plate 232, and multiple C-coil lateral cooling channels 2341 are provided on the C-coil upper electrode cylinder 234 and the C-coil lower electrode cylinder 235.

[0106] The C-coil end plate 232 is provided with threaded holes, and the upper C electrode cylinder 234 and the lower C electrode cylinder 235 are fixedly connected by screws. Multiple anti-rotation grooves 2322 are provided on the outer circumference of the C-coil end plate 232. Multiple bosses 2342 that mate with the anti-rotation grooves 2322 are provided at the ends of the upper C electrode cylinder 234 and the lower C electrode cylinder 235 where they connect to the C-coil end plate 232, ensuring the connection between the C-coil end plate 232 and the upper C electrode cylinder 234 and the lower C electrode cylinder 235. Multiple fixing rod recess holes are provided on the upper C electrode cylinder 234 and the lower C electrode cylinder 235. By recessing the end portion of the C fixing rod 233 into the upper C electrode cylinder 234 and the lower C electrode cylinder 235, the C-coil... Multiple second insulating cylinder support platforms 2351 are provided on the outer circumference of the lower electrode cylinder 235 to support the insulating cylinder between the C coil 23 and the D coil 24; a water flow groove 2352 is formed between adjacent second insulating cylinder support platforms 2351 to draw out cooling water between the inner wall of the insulating cylinder between the C coil 23 and the D coil 24 and the outer wall of the C magnet coil 231; the C fixing rod 233 has the same structure as the B fixing rod 223 mentioned above, and is made of a metal flat rod with an insulating layer cured by glass fiber and epoxy resin. The metal flat rod and the insulating layer have good integrity and stable insulation performance. The C fixing rod 233 is threaded at both ends, and the C magnet coil 231 is locked in sequence by an insulating pad, a disc-shaped pad, a metal pad and a nut.

[0107] In this embodiment, the structure of coil D 24 is the same as that of coil C 23. Coil D includes a magnetic coil D, a coil end plate D, a fixing rod D, an upper electrode cylinder D, and a lower electrode cylinder D. The magnetic coil D is fixed between the two sets of coil end plates by the fixing rod D. One end of the upper electrode cylinder D is connected to the upper coil end plate D, and the other end is electrically connected to the CD electrical connection plate 6. One end of the lower electrode cylinder D is connected to the lower coil end plate D, and the other end is electrically connected to coil E 25 through the DE electrical connection plate 7. The DE electrical connection plate 7 is connected to the container bottom cover 15 through the insulating anti-rotation structure 9. Specifically, the DE electrical connection plate 7 is connected to coil D 24 and coil E 25 by screws. The anti-rotation insulating plate 91 and the anti-rotation metal cylinder 92 are arranged from top to bottom on the bottom surface of the DE electrical connection plate 7. The threaded section of the anti-rotation metal threaded pin 93 is threadedly connected to the DE electrical connection plate 7, and the other end is fitted with an anti-rotation insulating sleeve 94, which passes through the anti-rotation insulating plate 91 and is then inserted into the anti-rotation metal cylinder 92.

[0108] Multiple cooling channels for the D coil 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 two ends of the D fixing rod are threaded, and the D magnet coil is locked in sequence by an insulating pad, a disc-shaped pad, a metal pad, and a nut.

[0109] See Figure 29 and Figure 30The E coil 25 includes an E magnet coil 251, an E coil end plate 252, an E fixing rod 253, and an EF electric connecting tube 254.

[0110] The E magnet coil 251 is fixed between two sets of E coil end plates 252 by the E fixing rod 253. One end of the EF electric connecting tube 254 is electrically connected to the upper E coil end plate 252, and the other end is electrically connected to the F coil 26 through the EF electric connecting plate 8. The lower end of the E magnet coil 251 is electrically connected to the container bottom cover 15 through the anti-insulation tube. The EF electric connecting plate 8 is connected to the container top cover assembly 12 through the insulation anti-rotation structure 9. Specifically, the EF electric connecting plate 8 is electrically connected to the E coil 25 and the F coil 26 through screws. The anti-rotation insulation plate 91 and the anti-rotation metal tube 92 are arranged sequentially from bottom to top on the top surface of the EF electric connecting plate 8. The threaded section of the anti-rotation metal threaded pin 93 is threadedly connected to the EF electric connecting plate 8, and the other end is fitted with an anti-rotation insulation sleeve 94, which passes through the anti-rotation insulation plate 91 and is then inserted into the anti-rotation metal tube 92.

[0111] The E coil end plate 252 is provided with multiple E coil axial cooling channels 2521, and the E fixing rod 253 is threaded at both ends, and the E magnet coil 251 is locked in sequence by an insulating pad, a disc-shaped pad, a metal pad and a nut.

[0112] See Figure 31 and Figure 33 The F coil 26 includes an F magnet coil 261, an F coil end plate 262, an F fixing rod 263, an F peripheral fastening rod 264, and an F transition electrical connection seat 265.

[0113] The F magnet coil 261 is fixed between two sets of F coil end plates 262 by an F fixing rod 263. The two sets of F coil end plates 262 outside the F magnet coil 261 are also connected by multiple F peripheral fastening rods 264. The upper F coil end plate 262 is electrically connected to the EF electrical connection plate 8, and the lower F coil end plate 262 is insulated from the container bottom cover 15. The end of the second electrical connector 28 extending into the cylinder wall assembly is electrically connected to the F transition electrical connection seat 265 fixed on the lower F coil end plate 262.

[0114] The F peripheral fastening rod 264 is made of a metal circular cross-section rod with an insulating layer cured by glass fiber and epoxy resin. It is used to insulate the F peripheral fastening rod 264 from the F magnet coil 261 and the F coil end plate 262. The insulating layer has thickened layers at both ends to provide positioning for installation with the F coil end plate 262. The F peripheral fastening rod 264 has threads at both ends, and the F magnet coil 261, F coil end plate 262, F insulating washer, and F adjusting washer are locked and fixed by the F peripheral nut. Together with the F fixing rod 263, it locks and fixes the F magnet coil 261 and F coil end plate 262.

[0115] The F coil end plate 262 is provided with multiple F coil axial cooling channels 2621, and the F fixing rod 263 is threaded at both ends, and the F magnet coil 261 is locked in sequence by an insulating pad, a disc-shaped pad, a metal pad and a nut.

[0116] See Figure 34 The F transition electrical connector 265 is provided with a through hole, which is connected to the F coil end plate 262 by countersunk screws. The mounting port is provided for installing the two middle countersunk screws on the F transition electrical connector 265, and also serves as a cooling water flow channel. The F transition electrical connector 265 is provided with an annular groove, which serves as a partial cooling water flow channel. The lower end of the F transition electrical connector 265 is provided with multiple threaded holes, which are connected to the second electrical connector 28 by screws.

[0117] In this embodiment, refer to Figure 35 The lower ends of coils E 25 and F 26 are insulatedly connected to the container bottom cover 15 via lower anti-rotation insulating cylinder 201 and lower anti-rotation metal cylinder 202. The lower anti-rotation insulating cylinder 201 is provided with a boss, and multiple holes are provided on the boss surface for inserting threaded cylindrical pins installed on the E coil end plate 252 to support and prevent rotation of coil E 25. The step of the lower anti-rotation insulating cylinder 201 is used to support the insulating cylinder between coils E 25 and F 26. Multiple holes are provided on the step to provide countersunk screws to connect the F coil end plate 262 and the lower anti-rotation insulating cylinder 201. Multiple evenly distributed threaded holes are provided on the lower end face of the lower anti-rotation insulating cylinder 201. Multiple evenly distributed holes are provided on the upper end of the lower anti-rotation metal cylinder 202, which is connected to the lower anti-rotation insulating cylinder 201 by countersunk screws.

[0118] Similarly, this embodiment also includes anti-rotation components, which include A lower insulating support anti-rotation cylinder 203, AB lower support anti-rotation plate 204, DE lower support anti-rotation plate 205, EF lower support anti-rotation plate 206 and F support adjusting insulating plate 207 connected to the container bottom cover 15.

[0119] The A lower insulating support anti-rotation cylinder 203 has evenly distributed holes on its upper end face for installing the large head of the fastening screw of the second electrical connector 28, and cooling water channels on its side. The lower end face has multiple evenly distributed holes. The AB lower support anti-rotation plate 204 has two rings of threaded holes on its upper end face, providing threaded cylindrical pins to connect the insulating anti-rotation structure 9 between coil B 22 and coil C 23 and the A lower insulating support anti-rotation cylinder 203 respectively. The DE lower support anti-rotation plate 205 is connected to the insulating anti-rotation structure 9 between coil D 24 and coil E 25 respectively through countersunk screws. The EF lower support anti-rotation plate 206 is connected to the EF lower end anti-rotation metal cylinder 202 respectively through countersunk screws. The lower end faces of the AB lower support anti-rotation plate 204, DE lower support anti-rotation plate 205, and EF lower support anti-rotation plate 206 all have multiple holes for inserting countersunk threaded pins into the container bottom cover 15. The F support adjusting insulating plate 207 is used to fit between the locking nut on the F outer fastening rod 264 and the F coil end plate 262.

[0120] In this embodiment, the current flows into coil A 21 through the first electrical connector 27. Coil A 21 receives the current through the upper locking nut 214, the upper anti-loosening nut, the AB electrical connection plate 4, and the conductive flexible connector 225, and then flows to the lower end of coil B 23. It then flows to the lower end of coil C 23 through the BC electrical connection plate 5, and the current flows from the lower end of coil C 23 to its upper end. It then flows to the upper end of coil D 24 through the CD electrical connection plate 6, and the current flows from the upper end of coil D 24 to its lower end. It then flows to the lower end of coil E 25 through the DE electrical connection plate 7, and the current flows from the lower end of coil E 25 to its upper end. Finally, the current is introduced to the upper end of coil F 26 through the EF electrical connection plate 8, and the current flows from the upper end of coil F 26 to its lower end. Finally, the current is introduced to the second electrical connector 28 through the F transition electrical connector 265, and the current is finally led out of the water-cooled magnet device.

[0121] Example 2

[0122] See 36 to Figure 38 The difference between this embodiment and Embodiment 1 is that the insulating cylinder assembly 3 is formed by axially splicing multiple insulating sleeves 32 to form a cylindrical structure. Each insulating sleeve 32 has a second protrusion 321 arranged along the length direction of the insulating sleeve on both its inner and outer walls. There is a cooling water flow channel between adjacent second protrusions 321. Each insulating sleeve 32 has multiple second positioning protrusions 322 arranged along its length direction on its inner wall. The outer side of coil A 21 is provided with a corresponding slot for engaging the second protrusion (not shown in the figure). The thickness of the second protrusions 321 on the outer wall of adjacent insulating sleeves 32 decreases sequentially from the middle to both ends of the insulating cylinder assembly 3.

[0123] It should be noted that in the coil of the water-cooled magnet, the electromagnetic force gradually increases from both ends towards the middle, reaching its maximum at the middle. Therefore, during operation, the radial displacement at both ends of the coil is the largest. In traditional integrated insulating cylinders, the dimensions from the middle to both ends are the same, which causes the radial electromagnetic force at both ends of the inner coil to be transferred to the outer coil, which is detrimental to the operation of the outer coil. In this embodiment, the insulating cylinder assembly 3 is formed by axially splicing multiple insulating sleeves 32 to form a ring-shaped segmented cylindrical structure. The insulating sleeves 32 adopt a method of progressively decreasing thickness of the second ribs 321 from the middle of the coil towards both ends, reserving sufficient buffer space for each segment of the coil and avoiding influence on the outer coil.

[0124] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0125] The above embodiments are merely illustrative of implementation methods of the invention. The scope of protection of the present invention is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A hydraulic mechanism for a high-mechanical-stability water-cooled magnet structure, characterized by: The application relates to a cylinder-piston assembly, which comprises a cylinder, a piston, a stop ring, a pressure-equalizing pad, a limiting block, a first force-transmitting stop ring, a first anti-rotation pin, a second force-transmitting stop ring, a second anti-rotation pin, a first force-transmitting column and a second force-transmitting column, wherein the piston and the limiting block are arranged in the cylinder, the bottom of the cylinder is provided with the stop ring and the pressure-equalizing pad, the bottom of the pressure-equalizing pad is provided with the first force-transmitting stop ring and the second force-transmitting stop ring, the first force-transmitting stop ring is connected with the cylinder through the first anti-rotation pin, the second force-transmitting stop ring is connected with the stop ring through the second anti-rotation pin, a plurality of the first force-transmitting columns are connected on the first force-transmitting stop ring, a plurality of the second force-transmitting columns are connected on the second force-transmitting stop ring, the first force-transmitting columns are used for being insulatedly connected with the innermost coils in a magnet coil assembly, the second force-transmitting columns are used for being insulatedly connected with the coils adjacent to the innermost coils in the magnet coil assembly, the piston is pushed to move downwards, hydraulic pressure is transmitted to the pressure-equalizing pad, and then the hydraulic pressure is transmitted to the first force-transmitting stop ring, the second force-transmitting stop ring, the first force-transmitting columns and the second force-transmitting columns, so that the hydraulic pressure is applied to the two innermost coils in the magnet coil assembly.

2. A hydraulic mechanism for a high-mechanical-stability water-cooled magnet structure according to claim 1, characterized by: The first anti-rotation pin grooves are uniformly distributed on the cylinder, the first countersunk bolt connecting holes are circumferentially arranged on the first force-transmitting 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 connecting hole.

3. A hydraulic mechanism for a high-mechanical-stability water-cooled magnet structure according to claim 1, characterized by: The second anti-rotation pin grooves are uniformly distributed on the stop ring, the second countersunk bolt connecting holes are circumferentially arranged on the second force-transmitting stop ring, one end of the second anti-rotation pin is clamped in the second anti-rotation pin groove, and the other end is threadedly connected with the second countersunk bolt connecting hole.

4. A hydraulic mechanism for a high-mechanical-stability water-cooled magnet structure according to claim 1, characterized by: The first insulating sleeve is arranged on the top of the second force-transmitting column.

5. A hydraulic mechanism for a high-mechanical-stability water-cooled magnet structure according to claim 1, characterized by: The second insulating sleeve is arranged on the bottom of the first force-transmitting column.

6. A hydraulic mechanism for a high-mechanical-stability water-cooled magnet structure according to claim 1, characterized by: The third insulating sleeve is arranged on the bottom of the second force-transmitting column.

7. A hydraulic mechanism for a high-mechanical-stability water-cooled magnet structure according to claim 1, characterized by: The hydraulic medium input pipe is arranged on the cylinder.

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