Hydraulic partial pressure measuring assembly

Abstract

The utility model discloses a hydraulic pressure partial pressure measurement assembly, including U type cylinder, pressing plate, pressure equalizing ring, first partial pressure ring, second partial pressure ring, first pressure sensor, second pressure sensor, first force transmission column, first force transmission ring, second force transmission column, and the bottom opening of U type cylinder is provided with the pressing plate. The utility model has the advantages of guaranteeing that pressure sensor can accurately measure the actual pressure that hydraulic machine component exerts to the compressed coil through the setting of hydraulic pressure partial pressure measurement assembly.

Description

Technical Field

[0001] This utility model relates to the field of water-cooled magnet technology, specifically a hydraulic pressure measuring assembly. 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] During operation, the innermost coil of a water-cooled magnet experiences the most severe conditions, exhibiting the highest magnetic field strength and the greatest electromagnetic rotational force. For structures where the innermost coil lacks a fixing rod and relies on the secondary outer coil for compression, the amount of force applied to the coil by hydraulic pressurization is only an estimate due to the complexity of the structure and the forces involved. With the development of strong magnetic field technology, accurately measuring the pressure applied to the coil by the hydraulic pressurization device is crucial for magnet design and operational safety. Utility Model Content

[0007] The technical problem to be solved by this invention is how to accurately measure the pressure applied by the hydraulic pressurizing device to the coil being pressed.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] A hydraulic pressure measuring assembly includes a U-shaped cylinder, a pressure plate, an equalizing ring, a first pressure dividing ring, a second pressure dividing ring, a first pressure sensor, a second pressure sensor, a first force transmission column, a first force transmission ring, and a second force transmission column. A pressure plate is provided at the bottom opening of the U-shaped cylinder. The bottom of the first force transmission column abuts against the top of the innermost coil of the measured magnet coil assembly, and its other end extends through the pressure plate into the U-shaped cylinder to support the first pressure sensor. The second force transmission column is sleeved around the first force transmission column, with its bottom abutting against the top of the coil adjacent to the innermost coil of the measured magnet coil assembly. Its other end extends through the pressure plate into the U-shaped cylinder and supports the second pressure sensor through the first force transmission ring sleeved around the first force transmission column. A first pressure dividing ring is provided at the top of the first sensor, and a second pressure dividing ring is provided at the top of the second pressure sensor. The equalizing ring is located between the top inner wall of the U-shaped cylinder and the top surfaces of the first and second pressure dividing rings.

[0010] The hydraulic pressure measuring assembly ensures that the pressure sensor can accurately measure the actual pressure applied by the hydraulic press components to the coil being pressed.

[0011] Preferably, it also includes a hydraulic press assembly, which is disposed at the top of the U-shaped cylinder. The hydraulic press assembly includes a cylinder, a sealing ring, a piston, a stop ring, a limit block, and a second force transmission ring. The inner ring of the upper end of the cylinder is sealed by the sealing ring, and the outer ring of the upper end of the cylinder is connected to the inner ring of the container top cover assembly. The piston and the limit block are disposed inside the cylinder, and the stop ring and the second force transmission ring are disposed at the bottom of the cylinder. The bottom of the second force transmission ring abuts against the top of the U-shaped cylinder, pushing the piston to move downward and transmitting the hydraulic pressure to the second force transmission ring, thereby transmitting it to the hydraulic pressure measuring assembly, and then applying the hydraulic pressure to the two innermost coils of the magnet coil assembly.

[0012] Preferably, a hydraulic medium input pipe is provided on the cylinder body.

[0013] Preferably, the first force transmission column is surrounded by a first rubber sleeve, and the upper and lower ends of the first rubber sleeve are fixed to the first force transmission column by first clamps.

[0014] Preferably, the second force transmission column is surrounded by a second rubber sleeve, and the upper and lower ends of the second rubber sleeve are respectively fixed to the second force transmission column with second clamps.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model ensures that the pressure sensor can accurately measure the actual pressure applied by the hydraulic press assembly to the coil being pressed by the hydraulic pressure measuring assembly.

[0017] 2. This utility model, through the setting of the hydraulic press component, can apply axial force to the magnet coil assembly, increase the clamping force on the magnet coil assembly, and thus increase the magnet coil assembly's ability to resist external electromagnetic force. It solves the problems of excessive radial expansion electromagnetic force on the magnet coil bit pieces and insulating pieces during the operation of water-cooled magnets, causing radial expansion and misalignment of the bit pieces and insulating pieces, 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 force causing the coil stress to exceed the limit. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the hydraulic pressure measuring assembly according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the hydraulic pressure measuring assembly according to an embodiment of the present invention;

[0020] Figure 3 This is an assembly drawing of the hydraulic press assembly and the hydraulic pressure measuring assembly according to an embodiment of the present invention;

[0021] Figure 4 This is a partial structural schematic diagram of coil A and coil B in an embodiment of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of coil A and coil B in embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the insulating cylinder assembly according to an embodiment of the present utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the insulating sheet in an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the coil end plate in Embodiment A of this utility model;

[0026] Figure 9This is a schematic diagram of the structure of the electrode cylinder on the first A coil according to an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of the electrode cylinder on the second A coil according to an embodiment of the present invention;

[0028] Figure 11 This is a schematic diagram of the structure of the lower electrode cylinder of the first A coil in this embodiment of the present invention;

[0029] Figure 12 This is a schematic diagram of the structure of the lower electrode cylinder of the second A coil in this embodiment of the present invention;

[0030] Figure 13 This is a schematic diagram of the coil end plate in embodiment B of this utility model;

[0031] Figure 14 This is a schematic diagram of the structure of the electrode cylinder on the first B coil in this embodiment of the present invention;

[0032] Figure 15 This is a schematic diagram of the structure of the electrode cylinder on the second B coil in this embodiment of the present invention;

[0033] Figure 16 This is a schematic diagram of the structure of the lower electrode cylinder of the first B coil in this embodiment of the present invention;

[0034] Figure 17 This is a schematic diagram of the structure of the lower electrode cylinder of the second B coil in this embodiment of the present invention. Detailed Implementation

[0035] To facilitate understanding of the technical solution of this utility model by those skilled in the art, the technical solution of this utility model will now be further described in conjunction with the accompanying drawings.

[0036] 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.

[0037] 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.

[0038] See Figure 1 This embodiment discloses a hydraulic pressure measuring assembly, including a container assembly 1, a magnet coil assembly 2, and a hydraulic pressure measuring assembly 4. The magnet coil assembly 2 is located inside the container assembly 1, and the hydraulic pressure measuring assembly 4 is disposed between the container assembly 1 and the magnet coil assembly 2.

[0039] The container assembly 1 includes a cylindrical wall assembly 11, a container top cover assembly 12, a hydraulic press assembly 13, a container bottom cover 14, and electrical connection assemblies (not shown). The outer ring of the container top cover assembly 12 is connected to the top of the cylindrical wall assembly 11, and the inner ring is connected to the outer ring of the hydraulic press assembly 13. The bottom of the hydraulic press assembly 13 is fixed to the top of the hydraulic pressure measuring assembly 4. The outer ring of the container bottom cover 14 is connected to the bottom of the cylindrical wall assembly 11, and the inner ring is connected to the magnet coil assembly 2. Multiple electrical connection assemblies pass through the cylindrical wall assembly 11 and are electrically connected to the magnet coil assembly 2.

[0040] See Figures 2 to 4 The hydraulic press assembly 13 includes a cylinder body 131, a sealing ring 132, a piston 133, a stop ring 134, a limit block 135, a second force transmission ring 136, and a hydraulic medium input pipe 137. The upper inner ring of the cylinder body 131 is sealed by the sealing ring 132, and the upper outer ring of the cylinder body 131 is connected to the inner ring of the container top cover assembly 11. The piston 133 and the limit block 135 are installed inside the cylinder body 131. The stop ring 134 and the second force transmission ring 136 are installed at the bottom of the cylinder body 131. The bottom of the second force transmission ring 136 abuts against the top of the hydraulic pressure measuring assembly 4. The hydraulic medium input pipe 137 is installed on the cylinder body 131 for inputting hydraulic medium into the cylinder body 131.

[0041] Specifically, the piston is pushed downward to transmit the hydraulic pressure to the second force transmission ring 136, which in turn transmits it to the hydraulic pressure measuring assembly 4, and then applies the hydraulic pressure to the two innermost coils of the magnet coil assembly 2.

[0042] By setting up the hydraulic press assembly 13, axial force can be applied to the magnet coil assembly 2, increasing the clamping force on the magnet coil assembly 2, thereby increasing the magnet coil assembly 2's ability to resist external electromagnetic force. This solves the problems of excessive radial expansion electromagnetic force on the magnet coil bit pieces and insulating pieces during water-cooled magnet operation, causing radial expansion and misalignment of the bit pieces and insulating pieces, blockage of water flow channels, and overheating or even melting of the coil. It also solves the problems of excessive radial expansion force causing the coil stress to exceed the limit, resulting in cracking and damage.

[0043] The magnet coil assembly 2 includes multiple coils that are radially connected in series, see reference. Figure 5 The two innermost coils are coil A 21 and coil B 22, which are insulated from each other by an insulating cylinder assembly 3.

[0044] See Figure 6 and Figure 7 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 protrusion 311 on its inner and outer walls along the length of the insulating sheet 31. The space between adjacent protrusions 311 is a cooling water channel. Each insulating sheet 31 has a positioning boss 312 at both ends along its length on its inner wall. The 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).

[0045] See also Figures 3 to 4 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, and a lower anti-loosening nut. 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.

[0046] 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 away from the second upper electrode cylinder 2132 is connected to the upper end of coil end plate 212. An upper locking nut 214 and an upper anti-loosening nut are also provided on the second upper electrode cylinder 2132 from bottom to top. The second upper electrode cylinder 2132 is electrically connected to coil B 22 through the upper locking nut 214 and the upper anti-loosening nut. The bottom of the hydraulic pressure measuring assembly 4 abuts against the second upper electrode cylinder 2132. At the top, 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 14. An insulating collar 216 is also fitted on the outer wall of the lower end 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.

[0047] See Figures 8 to 12 Multiple 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.

[0048] 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 on the hydraulic press assembly 13, and 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.

[0049] 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 press assembly 13, and multiple axial holes are provided on it for connecting the container bottom cover 14. 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.

[0050] A first limiting groove 2122 is provided on the outer circumference of the end plate 212 of coil A, a second limiting groove 21311 is provided on the outer circumference of the upper electrode cylinder 2131 of the first coil A, and a positioning groove 21511 is provided on the outer circumference of the lower electrode cylinder 2151 of the first coil A. 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 assembly composed of two positioning bosses 312. The positioning groove 21511 is stepped, and the bottom of the positioning groove 21511 fits against the bottom surface of the boss assembly to limit the movement of the boss assembly. This prevents the insulating sheet 31 from moving downwards when the high-pressure cooling water is flushed down, thus supporting the insulating sheet 31. Finally, the insulating cylinder assembly 3 is supported, preventing it from moving up and down. The insulating cylinder assembly 3 provides insulation between the magnet coils in coil A 21 and coil B 22.

[0051] 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.

[0052] 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 press assembly 13 and the container bottom cover 14 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 achieving the positioning of the A magnet coil 211. At the same time, insulation is achieved between the magnet coils in the A coil 21 and the B coil 22. Therefore, the insulating cylinder assembly 3 in this embodiment not only plays an insulating role, but also replaces the fixing rod and plays a positioning role for the A magnet coil 211.

[0053] 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.

[0054] See also Figures 3 to 4 The B coil 22 includes a B magnet coil 221, a B coil end plate 222, a B fixing rod 223, an upper electrode cylinder 224 of the B coil, and a lower electrode cylinder 225 of the B coil. The upper electrode cylinder 224 of the B coil includes a first upper electrode cylinder 2241 and a second upper electrode cylinder 2242 of the B coil connected together. The lower electrode cylinder 225 of the B coil includes a first lower electrode cylinder 2251 and a second lower electrode cylinder 2252 of the B coil connected together.

[0055] 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, and the other end is electrically connected to the second A coil upper electrode cylinder 2132 through the upper locking nut 214 and the upper anti-loosening nut. The bottom of the hydraulic pressure measuring assembly 4 abuts against the top of the second B coil upper electrode cylinder 2242. The end of the first B coil lower electrode cylinder 2251 away from the second B coil lower electrode cylinder 2252 is connected to the lower B coil end plate 222, and the end of the second B coil lower electrode cylinder 2252 away from the first B coil lower electrode cylinder 2251 is insulatedly connected to the container bottom cover 14.

[0056] See Figures 13 to 17 Multiple 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 225. Among them, multiple B-coil 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 2251, and multiple B-coil lateral cooling channels 22421 are provided on the second B-coil upper electrode cylinder 2242 and the second B-coil lower electrode cylinder 2252.

[0057] 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 2251, in addition to the same arrangement as the first B coil upper electrode cylinder 2241, is provided with multiple first insulating cylinder support platforms 22511 for supporting the B coil 22 and the insulating cylinders between adjacent coils, as well as cooling water channels between adjacent first insulating cylinder support platforms 22511; the second B The upper electrode cylinder 2242 of the coil is provided with multiple light holes, which are fastened to the upper electrode cylinder 2241 of the first B coil by countersunk screws. The upper electrode cylinder 2242 of the second B coil is provided with upper locking nut thread and upper anti-loosening nut thread, which are respectively installed with upper locking nut 214 and upper anti-loosening nut for upper locking of coil 21 and electrical connection of coil 21. Compared with the upper electrode cylinder 2242 of the second B coil, the lower electrode cylinder 2252 of the second B coil is also provided with lower locking nut thread and lower anti-loosening nut thread, which are respectively installed with lower locking nut 217, lower anti-loosening nut and insulating collar 216 for lower locking of coil 21 and electrical insulation of coil 21.

[0058] See also Figure 3The hydraulic pressure measuring assembly 4 includes a U-shaped cylinder 401, a pressure plate 402, a pressure equalizing ring 403, a first pressure dividing ring 404, a second pressure dividing ring 405, a first pressure sensor 406, a second pressure sensor 407, a first force transmission column 408, a first force transmission ring 409, and a second force transmission column 410. The U-shaped cylinder 401 is hollow inside and its opening faces downward. The pressure plate 402 is installed at the bottom opening of the U-shaped cylinder 401. The pressure plate 402 is connected to the U-shaped cylinder 401 by screws and sealing rings. The top of the U-shaped cylinder 401 abuts against the bottom of the second force transmission ring 136 to bear the hydraulic pressure of the hydraulic press assembly 13.

[0059] The bottom of the first force transmission column 408 abuts against the pressure-bearing surface 2 of the electrode cylinder 2132 on the second A coil, and the other end extends through the pressure plate 402 into the U-shaped cylinder 401 to support the first pressure sensor 406. The second force transmission column 410 is sleeved around the first force transmission column 408 and its bottom abuts against the top surface of the electrode cylinder 2242 on the second B coil. The other end extends through the pressure plate 402 into the U-shaped cylinder 401 and supports the second pressure sensor 407 through the first force transmission ring 409 sleeved around the first force transmission column 408. A first pressure dividing ring 404 is provided at the top of the first sensor 406, and a second pressure dividing ring 405 is provided at the top of the second pressure sensor 407. The equalizing ring 403 is located between the top inner wall of the U-shaped cylinder 401 and the first pressure dividing ring 404 and the second pressure dividing ring 405.

[0060] In this embodiment, the second force transmission ring 136 transmits the hydraulic pressure in the hydraulic press assembly 13 to the U-shaped cylinder 401, and then to the pressure equalizing ring 403. Internally, the pressure is sequentially transmitted to the first pressure dividing ring 404, the first pressure sensor 406, and the first force transmission column 408 to the pressure-bearing surface 2 of the electrode cylinder 2132 of the second A coil, thereby accurately measuring the pressure applied to the pressed A coil 21. Externally, the pressure is sequentially transmitted to the second pressure dividing ring 405, the second pressure sensor 407, the first force transmission ring 409, and the second force transmission column 410 to the top of the electrode cylinder 2242 of the second B coil, thereby accurately measuring the pressure applied to the pressed B coil 21.

[0061] The first force transmission column 408 is surrounded by a first rubber sleeve 411. The upper and lower ends of the first rubber sleeve 411 are fixed to the first force transmission column 408 by first clamps 412, thereby achieving a sealed isolation between the first pressure sensor 406 and the second pressure sensor 407 inside the U-shaped cylinder 401 and the high-pressure cooling water. The second force transmission column 410 is surrounded by a second rubber sleeve 413. The upper and lower ends of the second rubber sleeve 413 are fixed to the second force transmission column 410 by second clamps 414, thereby achieving a sealed isolation between the first pressure sensor 406 and the second pressure sensor 407 inside the U-shaped cylinder 401 and the high-pressure cooling water.

[0062] In this embodiment, the first rubber sleeve 411 and the second rubber sleeve 413 are provided to seal the first force transmission column 408 and the second force transmission column 410 with the inside of the U-shaped cylinder 401, preventing high-pressure cooling water from entering the U-shaped cylinder 401. This solves the problem that the pressure sensor cannot measure in high-pressure cooling water, and ensures that the pressure sensor can accurately measure the actual pressure applied by the hydraulic press assembly to the pressed coil.

[0063] In addition, in this embodiment, the pressure-dividing areas of the first pressure-dividing ring 404 and the second pressure-dividing ring 405 can be adjusted according to the measurement results of the first pressure sensor 406 and the second pressure sensor 407 to achieve the best effect.

[0064] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this 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 this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0065] The above embodiments are merely examples of implementation methods of the utility model. The protection scope of this utility model 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 this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A hydraulic pressure measuring assembly, characterized in that: The device includes a U-shaped cylinder, a pressure plate, a pressure equalizing ring, a first pressure dividing ring, a second pressure dividing ring, a first pressure sensor, a second pressure sensor, a first force transmission column, a first force transmission ring, and a second force transmission column. A pressure plate is provided at the bottom opening of the U-shaped cylinder. The bottom of the first force transmission column abuts against the top of the innermost coil of the tested magnet coil assembly, and the other end extends through the pressure plate into the U-shaped cylinder to support the first pressure sensor. The second force transmission column is sleeved around the first force transmission column, and its bottom abuts against the top of the coil adjacent to the innermost coil of the tested magnet coil assembly. The other end extends through the pressure plate into the U-shaped cylinder and supports the second pressure sensor through the first force transmission ring sleeved around the first force transmission column. A first pressure dividing ring is provided at the top of the first sensor, and a second pressure dividing ring is provided at the top of the second pressure sensor. The pressure equalizing ring is located between the top inner wall of the U-shaped cylinder and the top surfaces of the first and second pressure dividing rings.

2. The hydraulic pressure measuring assembly according to claim 1, characterized in that: It also includes a hydraulic press assembly, which is located at the top of the U-shaped cylinder. The hydraulic press assembly includes a cylinder body, a sealing ring, a piston, a stop ring, a limit block, and a second force transmission ring. The inner ring at the upper end of the cylinder body is sealed by the sealing ring, and the outer ring at the upper end of the cylinder body is connected to the inner ring of the container top cover assembly. The piston and the limit block are installed inside the cylinder body, and the stop ring and the second force transmission ring are installed at the bottom of the cylinder body. The bottom of the second force transmission ring abuts against the top of the U-shaped cylinder, pushing the piston to move downward and transmitting the hydraulic pressure to the second force transmission ring, thereby transmitting it to the hydraulic pressure measuring assembly, and then applying the hydraulic pressure to the two innermost coils of the magnet coil assembly.

3. The hydraulic pressure measuring assembly according to claim 2, characterized in that: The cylinder body is equipped with a hydraulic medium input pipe.

4. The hydraulic pressure measuring assembly according to claim 1, characterized in that: The first force transmission column is surrounded by a first rubber sleeve, and the upper and lower ends of the first rubber sleeve are fixed to the first force transmission column by first clamps.

5. A hydraulic pressure measuring assembly according to claim 1, characterized in that: The second force transmission column is surrounded by a second rubber sleeve, and the upper and lower ends of the second rubber sleeve are fixed to the second force transmission column by second clamps.

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