High-temperature superconducting tokamak cryostat toroidal measurement equipment and application method

Abstract

The present invention discloses a high-temperature superconducting tokamak cryostat toroidal measurement device and an application method, which relates to the technical field of measurement. The device includes a cryostat toroid, and a top cover is arranged at the upper end of the cryostat toroid. Flange rings are arranged on the outer surfaces of the top cover and the cryostat toroid. Two installation mechanisms spliced and combined into a circular ring shape are fixedly installed at the lower end of the flange ring through bolts. In the present invention, the balls on the arc bead rod contact the surface of the flange ring and move as the flange ring expands, so that the minute thickness change of the flange ring can be detected very sensitively. The position change of the absolute value scale can accurately reflect the thickness change of the flange ring. The contact between the arc bead rod and the surface of the flange ring is dynamic, and it can quickly respond to any change of the flange ring, ensuring the real-time and accuracy of the data. By detecting the thickness change of the flange ring after thermal expansion, its sealing performance under high-temperature conditions can be evaluated.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and particularly to a measurement device for the toroidal body of a high-temperature superconducting tokamak cryostat and an application method thereof. Background Art

[0002] The toroidal body of the high-temperature superconducting tokamak cryostat (usually referring to the outer vacuum cryostat) is a key structural component. It not only provides a low-temperature environment for the internal superconducting magnet but also bears the mechanical stress caused by the temperature difference and pressure difference inside and outside. To ensure the safe operation of the device, it is necessary to monitor the changes in the toroidal body during the experiment.

[0003] For example, in the patent document with the publication number CN103615965B and the invention title of an eddy current thickness measurement method for the coating thickness on the curved surface of a metal workpiece with curvature changes, a method of positioning and detecting calibration of grid-shaped detection points by a mechanical scanner is adopted. First, the mechanical scanner is used to position and detect the curved surface of the metal substrate without a coating and the curved surface of the metal workpiece with three different standard coating thicknesses at grid-shaped detection points, and calibration curves for the coating thickness at each detection point are made. Then, the mechanical scanner is used to position and detect the metal workpiece to be inspected with a coating, and through the calibration curve for the coating thickness at each detection point, the accurate coating thickness value at each detection point on the surface of the metal workpiece with a curved surface and curvature changes is calculated, effectively solving the problem of detecting the coating thickness on the surface of the metal workpiece with a curved surface and curvature changes.

[0004] The above invention detects the curvature of the metal workpiece. However, the toroidal body of the high-temperature superconducting tokamak cryostat in the present invention needs to withstand a relatively high temperature. Therefore, the size of the toroidal body of the tokamak cryostat in the working state will change. The toroidal body of the tokamak cryostat is installed by docking through a flange ring. The size, thickness, and curvature of the flange ring change after thermal expansion. If the minute size, thickness, and curvature changes of the flange ring after thermal expansion do not meet the standards, it will lead to the sealing failure of the flange ring. Therefore, it is necessary to detect the connection quality between the toroidal body of the cryostat and other installation parts under different temperature conditions. The present application provides a measurement device for the toroidal body of a high-temperature superconducting tokamak cryostat and an application method to meet this requirement. Summary of the Invention

[0005] The purpose of the present application is to provide a measurement device for the toroidal body of a high-temperature superconducting tokamak cryostat and an application method, which can effectively solve the problems raised in the above background art.

[0006] To achieve the above object, the present application provides the following technical solutions: A high-temperature superconducting tokamak cryostat toroidal measurement device, including a cryostat toroid, a top cover is provided at the upper end of the cryostat toroid, flange rings are provided on the outer surfaces of the top cover and the cryostat toroid, and two splicing and combined circular installation mechanisms are fixedly installed at the lower end of the flange ring through bolts. Detection mechanisms for detecting the thermal expansion coefficient of the flange ring are provided at the upper ends of the two installation mechanisms. Curvature detection mechanisms for detecting the curvature change of the flange ring after heating are provided inside the two detection mechanisms. Thickness detection mechanisms for detecting the thickness dimension change after the two flange rings collide when heated are provided on one side of the two curvature detection mechanisms. A heating mechanism for heating the two flange rings is jointly provided inside the top cover and the cryostat toroid;

[0007] The thickness detection mechanism includes an installation shell, a support rod is provided on the inner wall of the installation shell, a partition is provided in the middle of the inner wall of the installation shell, absolute value scales are provided on the outer surface of the support rod on both sides of the partition, and a number of equally spaced scale holes are provided on the outer surface of the absolute value scale.

[0008] Among them, the installation mechanism includes a ball seat, a number of balls are provided inside the ball seat, a sliding ring is slidably installed inside the ball seat, and a mounting seat is provided at the upper end of the sliding ring.

[0009] Among them, the detection mechanism includes a base, a perimeter measuring instrument is provided on one side of the upper end of the base, the base is fixedly installed on the upper end of the mounting seat, a data detection box is provided on the upper end of the base, and two detection rods are symmetrically provided on one side of the data detection box.

[0010] Among them, a sliding rod is slidably installed inside the detection rod, a ring piece is provided in the middle of the outer surface of the sliding rod, a tension spring is sleeved on the outer surface of the ring piece, one end of the sliding rod is provided with a roller and the other end is provided with an iron core, and a secondary coil and a primary coil are provided on one side of the inner wall of the detection rod, and both the secondary coil and the primary coil are sleeved on the outside of the iron core.

[0011] Among them, the curvature detection mechanism includes an installation ring, a support shaft rod is provided in the middle of the installation ring, and the support shaft rod is fixedly installed on the upper end of the base. A bearing is rotatably installed on the outer surface of the support shaft rod inside the installation ring, and a torsion spring is provided on the outer surface of the support shaft rod above the bearing.

[0012] Among them, a connecting rod is provided on one side of the outer surface of the bearing, a shaft roller is provided at one end of the connecting rod, an inclination sensor is provided on one side of the outer surface of the bearing, a transmission line is provided on one side of the inclination sensor, and one end of the transmission line is electrically connected to the data detection box.

[0013] Among them, two ultra-clear CMOS sensors are symmetrically arranged on the inner wall of the installation shell. High-power LEDs corresponding to the positions of the ultra-clear CMOS sensors are arranged on both sides of the partition plate. Notch openings are provided on both sides of the installation shell.

[0014] Among them, two sliding groove blocks are arranged on the inner wall of the installation shell. Springs are arranged inside the two sliding groove blocks. Arc bead rods are arranged at one ends of the two absolute value rulers. A data cable is arranged on the outer surface of the installation shell, and one end of the data cable is electrically connected to the data detection box. The installation shell is fixedly installed on one side of the connecting rod.

[0015] Among them, the heating mechanism includes a heat insulation ring. Two heat conduction ring plates are arranged on the inner wall of the heat insulation ring. A heating wire is arranged inside the two heat conduction ring plates. Elastic rings are arranged on the upper and lower sides of the heat insulation ring. The two heat conduction ring plates are respectively closely attached to the inner walls of the top cover and the Dewar ring body.

[0016] The present invention also provides an application method for a high-temperature superconducting Tokamak Dewar ring body measurement device. The specific application method of the Tokamak Dewar ring body measurement device is as follows:

[0017] S1. Install the heating mechanism on the inner wall of the Dewar ring body, then install the top cover on the Dewar ring body so that the two flange rings are aligned and fixed with bolts, and then dock and install the two groups of installation mechanisms below the flange rings;

[0018] S2. When detecting the Dewar ring body and the flange rings, the heating mechanism raises the temperature and transfers the temperature to the two flange rings. By raising the temperature to detect the influence of the temperature on the size of the flange rings after installation, the thermal expansion values of the flange rings at different temperatures can be detected by the detection mechanism;

[0019] S3. The surface curvature change of the flange rings after heating can be detected by the curvature detection mechanism, and a thickness detection mechanism is provided to detect the tightness between the two flange rings after installation according to the different temperatures of the flange rings.

[0020] In summary, the technical effects and advantages of the present invention:

[0021] 1. In the present invention, the ball on the arc bead rod contacts the surface of the flange ring and moves as the flange ring expands, enabling very sensitive detection of minute thickness changes of the flange ring. The position change of the absolute scale can accurately reflect the thickness change of the flange ring. The contact between the arc bead rod and the surface of the flange ring is dynamic, capable of quickly responding to any change in the flange ring, ensuring the real-time and accuracy of data. By detecting the thickness change of the flange ring after thermal expansion, its sealing performance under high-temperature conditions can be evaluated. If the flange ring undergoes significant deformation or thickness change after heating, it may lead to sealing failure. Through detailed detection of the flange ring, its dimensional stability under different temperature conditions can be ensured, thereby guaranteeing the connection quality between the Dewar ring body and other installation parts. The function of the spring is to maintain the contact force between the absolute scale and the flange ring, ensuring that the scale can accurately follow the change of the flange ring when the flange ring expands due to heat.

[0022] 2. In the present invention, the roller contacts the outer surface of the flange ring and rolls as the flange ring expands, enabling very sensitive detection of minute dimensional changes of the flange ring. The change of the primary coil and the secondary coil due to the change of the iron core causes a change in resistance, which can very accurately reflect the dimensional change of the flange ring. As the mounting base rotates, the data detection box and the base move in a circular motion around the flange ring, realizing continuous monitoring of the flange ring, and data can be obtained in real time throughout the detection process, rather than only measuring at a specific point. By detecting the dimensional change of the flange ring after thermal expansion, its sealing performance under high-temperature conditions can be evaluated. If the flange ring undergoes significant deformation after heating, through detailed detection of the flange ring, its dimensional stability under different temperature conditions can be ensured, thereby guaranteeing the connection quality between the Dewar ring body and other installation parts.

[0023] 3. In the present invention, the shaft roller is closely attached to the outer surface of the flange ring and rolls as the flange ring expands. The angular change between the connecting rod and the axis of the flange ring can very sensitively reflect the minute dimensional and curvature changes of the flange ring. The tilt sensor can accurately detect the deflection angle of the bearing, thereby indirectly measuring the curvature change of the flange ring. As the base moves in a circular motion around the flange ring, the shaft roller rolls on the entire surface of the flange ring, realizing continuous monitoring of the flange ring, which enables data to be obtained in real time throughout the test process, rather than only measuring at a specific point. By detecting the dimensional and curvature changes of the flange ring after thermal expansion, its sealing performance under high-temperature conditions can be evaluated. If the flange ring undergoes significant deformation or curvature change after heating, it may lead to sealing failure. The torsion spring provides torque for the connecting rod, ensuring that the shaft roller is always closely attached to the surface of the flange ring and maintaining good contact even when the flange ring expands due to heat, thereby guaranteeing the accuracy and stability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic three-dimensional structure diagram of a high-temperature superconducting tokamak Dewar toroidal measurement device;

[0026] Figure 2 It is a schematic internal three-dimensional structure diagram of a high-temperature superconducting tokamak Dewar toroidal measurement device;

[0027] Figure 3 It is a schematic three-dimensional connection structure diagram of the installation mechanism and the detection mechanism;

[0028] Figure 4 It is a schematic three-dimensional connection structure diagram of the installation mechanism, the detection mechanism, the thickness detection mechanism, and the curvature detection mechanism;

[0029] Figure 5 It is a schematic three-dimensional connection structure diagram of the installation mechanism;

[0030] Figure 6 It is an exploded view of the three-dimensional connection structure of the installation mechanism;

[0031] Figure 7 It is a schematic three-dimensional connection structure diagram of the detection mechanism, the thickness detection mechanism, and the curvature detection mechanism;

[0032] Figure 8 It is a schematic three-dimensional connection structure diagram of the detection mechanism and the curvature detection mechanism;

[0033] Figure 9 It is a schematic three-dimensional connection structure diagram of the detection mechanism;

[0034] Figure 10 It is a sectional view of the three-dimensional connection structure of the detection mechanism;

[0035] Figure 11 It is a schematic three-dimensional connection structure diagram of the curvature detection mechanism from the first perspective;

[0036] Figure 12 It is a schematic three-dimensional connection structure diagram of the curvature detection mechanism from the second perspective;

[0037] Figure 13 It is a schematic three-dimensional connection structure diagram of the thickness detection mechanism;

[0038] Figure 14 It is a sectional view of the three-dimensional connection structure of the thickness detection mechanism from the first perspective;

[0039] Figure 15 Schematic cross-sectional view of the second perspective three-dimensional connection structure of the thickness detection mechanism;

[0040] Figure 16 Schematic diagram of the three-dimensional connection structure of the absolute value scale and the chute block;

[0041] Figure 17 Schematic diagram of the three-dimensional connection structure of the heating mechanism;

[0042] Figure 18 Schematic cross-sectional view of the three-dimensional connection structure of the heating mechanism.

[0043] In the figure: 1, top cover; 2, Dewar ring body; 3, flange ring; 4, installation mechanism; 41, mounting seat; 42, slip ring; 43, ball seat; 44, ball; 5, detection mechanism; 51, data detection box; 52, perimeter measurer; 53, base; 54, detection rod; 55, roller; 56, slide bar; 57, tension spring; 58, ring piece; 59, iron core; 511, primary coil; 512, secondary coil; 6, thickness detection mechanism; 60, scale hole; 61, data line; 62, mounting shell; 63, arc bead rod; 64, notch; 65, support rod; 66, absolute value scale; 67, chute block; 68, ultra-clear CMOS sensor; 69, high-power LED; 611, partition; 612, spring; 7, curvature detection mechanism; 71, connecting rod; 72, mounting ring; 73, support shaft rod; 74, torsion spring; 75, bearing; 76, shaft roller; 77, inclination sensor; 78, transmission line; 8, heating mechanism; 81, heat insulation ring; 82, heat conduction ring plate; 83, heating wire; 84, spring ring. Specific embodiments

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] Example 1. Refer to Figures 1 to 18The shown high-temperature superconducting tokamak Dewar torus measurement device includes a Dewar torus 2. A top cover 1 is provided at the upper end of the Dewar torus 2. Flange rings 3 are provided on the outer surfaces of both the top cover 1 and the Dewar torus 2. At the lower end of the flange ring 3, two installation mechanisms 4 that are spliced and combined into a circular shape are fixedly installed by bolts. At the upper ends of both installation mechanisms 4, detection mechanisms 5 for detecting the thermal expansion coefficient of the flange ring 3 are provided. Inside both detection mechanisms 5, curvature detection mechanisms 7 for detecting the change in curvature of the flange ring 3 after heating are provided. On one side of both curvature detection mechanisms 7, thickness detection mechanisms 6 for detecting the change in thickness dimension after the two flange rings 3 collide when heated are provided. Inside the top cover 1 and the Dewar torus 2, a heating mechanism 8 for heating the two flange rings 3 is jointly provided;

[0046] It should be noted that when in use, the top cover 1 is installed at the upper end of the Dewar torus 2. Since the provided flange ring 3 is at the connection between the top cover 1 and the Dewar torus 2, during the production and detection process of the flange ring 3, it is necessary to assemble and detect the usage condition of the flange ring 3 during the installation process of the Dewar torus 2 and various components. By installing the installation mechanism 4, the detection mechanism 5 at the upper end of the installation mechanism 4 is pushed to move in a circular motion around the flange ring 3, and then the change in the perimeter dimension of the flange ring 3 after thermal expansion is obtained through the change in resistance;

[0047] When the detection mechanism 5 moves in a circular motion around the flange ring 3, the thickness detection mechanism 6 and the curvature detection mechanism 7 also move in a circular motion around the flange ring 3 along with the detection mechanism 5. The curvature detection mechanism 7 can detect the changes in size and surface curvature of the flange ring 3 during heating through the bearing 75. By detecting the changes in the size and curvature of the flange ring 3, it can be obtained whether the sealing performance and size of the parts installed by the Dewar torus 2 through the flange ring 3 are qualified during the installation and use processes of the Dewar torus 2;

[0048] The thickness detection mechanism 6 can detect the thickness and expansion index of each part of the flange ring 3 after the arc bead rod 63 detects one circle around the flange ring 3 during the heating process of the flange ring 3 through the change in the position of the absolute value scale 66, and the quality of the flange ring 3 and the Dewar torus 2 can be detected through these indexes when the Dewar torus 2 is installed with other installation parts.

[0049] Embodiment 2. Based on the heating mechanism 8, installation mechanism 4, and detection mechanism 5 proposed in Embodiment 1, this embodiment provides a further technical solution for the heating mechanism 8, installation mechanism 4, and detection mechanism 5.

[0050] The heating mechanism 8 includes a heat insulation ring 81. Two heat conduction ring plates 82 are provided on the inner wall of the heat insulation ring 81. A heating wire 83 is provided inside the two heat conduction ring plates 82. Elastic rings 84 are provided on both the upper and lower sides of the heat insulation ring 81. The two heat conduction ring plates 82 are respectively closely attached to the inner walls of the top cover 1 and the Dewar torus 2.

[0051] It should be noted that when testing the top cover 1 and the Dewar ring body 2, first, the heat insulation ring 81 and the heat conduction ring plate 82 are closely attached to the inner wall of the Dewar ring body 2, and then the top cover 1 is placed on the upper end of the Dewar ring body 2, so that the two flange rings 3 are aligned and fixed by bolts. Then, the heat insulation ring 81 is fixed on the inner walls of the top cover 1 and the Dewar ring body 2 through the spring ring 84. The two heat conduction ring plates 82 are arranged corresponding to the positions of the two flange rings 3. The heat generated by the heating wire 83 is conducted to the flange rings 3, and the use state of the flange rings 3 after installation is detected by the thermal expansion of the flange rings 3.

[0052] Among them, the flange ring 3 is a key component connecting the top cover 1 and the Dewar ring body 2. The changes in its size and shape directly affect the sealing performance. By detecting the state of the flange ring 3 after thermal expansion, its sealing performance under high-temperature conditions can be evaluated to ensure that there is no leakage during actual use. And by detecting the deformation of the flange ring 3 after thermal expansion, its structural stability under high-temperature conditions can be evaluated. If the flange ring 3 undergoes significant deformation or stress concentration after heating, it may lead to structural failure.

[0053] The installation mechanism 4 includes a ball seat 43. A number of balls 44 are arranged inside the ball seat 43. A sliding ring 42 is slidably installed inside the ball seat 43, and an installation seat 41 is arranged at the upper end of the sliding ring 42.

[0054] Among them, when installing the ball seat 43, the ball seat 43 is installed below the flange ring 3 by bolts. When using the detection mechanism 5, the thickness detection mechanism 6 and the curvature detection mechanism 7 to detect the flange ring 3, since the two designed ball seats 43 are both semi-circular in shape, after being assembled together, the installation seat 41 can be made to perform a circular motion by pushing the sliding ring 42, and the arranged balls 44 can assist the sliding ring 42 to slide smoothly.

[0055] The detection mechanism 5 includes a base 53. A perimeter measuring instrument 52 is arranged on one side of the upper end of the base 53. The base 53 is fixedly installed on the upper end of the installation seat 41. A data detection box 51 is arranged on the upper end of the base 53, and two detection rods 54 are symmetrically arranged on one side of the data detection box 51.

[0056] A sliding rod 56 is slidably installed inside the detection rod 54. A ring piece 58 is arranged in the middle of the outer surface of the sliding rod 56, and a tension spring 57 is sleeved on the outer surface of the ring piece 58. One end of the sliding rod 56 is provided with a roller 55 and the other end is provided with an iron core 59. A secondary coil 512 and a primary coil 511 are arranged on one side of the inner wall of the detection rod 54, and both the secondary coil 512 and the primary coil 511 are sleeved on the outside of the iron core 59.

[0057] Among them, when detecting the flange ring 3, the roller 55 contacts the outer surface of the flange ring 3. As the temperature of the surface of the flange ring 3 continuously rises, the flange ring 3 expands due to heat, and the size of the flange ring 3 will also change. The provided data detection box 51 and the base 53 rotate around the flange ring 3 in a circular motion along with the rotation of the mounting seat 41, and the roller 55 rolls on the surface of the flange ring 3. When the size of the flange ring 3 changes, the slide bar 56 slides inside the detection rod 54, and one end of the tension spring 57 is fixedly connected to the ring piece 58 to pull the slide bar 56 to move by contraction. When the slide bar 56 slides, it drives the iron core 59 to move, and the provided primary coil 511 and secondary coil 512 cause the resistance to change through the iron core 59, and the change in the circumference size of the flange ring 3 after thermal expansion is obtained through the change in the resistance.

[0058] Among them, by the roller 55 contacting the outer surface of the flange ring 3 and rolling along with the expansion of the flange ring 3, the minute size change of the flange ring 3 can be detected very sensitively. The change of the primary coil 511 and the secondary coil 512 through the iron core 59 causes the resistance to change, which can very accurately reflect the size change of the flange ring 3. Along with the rotation of the mounting seat 41, the data detection box 51 and the base 53 rotate around the flange ring 3 in a circular motion to realize continuous monitoring of the flange ring 3, and data can be obtained in real time throughout the detection process, rather than only measuring at a certain specific point.

[0059] By detecting the size change of the flange ring 3 after thermal expansion, its sealing performance under high-temperature conditions can be evaluated. If the flange ring 3 undergoes significant deformation after heating, through the detailed detection of the flange ring 3, its size stability under different temperature conditions can be ensured, thereby guaranteeing the connection quality between the Dewar ring body 2 and other installation parts.

[0060] Embodiment 3: Based on the curvature detection mechanism 7 provided in Embodiment 1, this embodiment also provides a further technical solution for the curvature detection mechanism 7.

[0061] The curvature detection mechanism 7 includes a mounting ring 72. A support shaft rod 73 is arranged in the middle of the mounting ring 72, and the support shaft rod 73 is fixedly installed at the upper end of the base 53. A bearing 75 is rotatably installed on the outer surface of the support shaft rod 73 and inside the mounting ring 72, and a torsion spring 74 is arranged on the outer surface of the support shaft rod 73 and above the bearing 75.

[0062] One side of the outer surface of the bearing 75 is provided with a connecting rod 71. One end of the connecting rod 71 is provided with a shaft roller 76. One side of the outer surface of the bearing 75 is provided with an inclination sensor 77. One side of the inclination sensor 77 is provided with a transmission line 78, and one end of the transmission line 78 is electrically connected to the data detection box 51.

[0063] It should be noted that as the base 53 moves, the support shaft rod 73 will also move. The shaft roller 76 is in close contact with the outer surface of the flange ring 3. When the base 53 makes a circular motion around the flange ring 3, the shaft roller 76 rotates on the outer surface of the flange ring 3. When the flange ring 3 has different expansion coefficients due to different heating temperatures, the angle between the connecting rod 71 and the axis of the flange ring 3 will also change. As the size of the flange ring 3 changes, the angle between the connecting rod 71 and the axis of the flange ring 3 is also different when the shaft roller 76 rolls. The rotation of the connecting rod 71 drives the bearing 75 to rotate on the outer surface of the support shaft rod 73. The torsion spring 74 provided is to provide torsion for the connecting rod 71, so that the shaft roller 76 is in close contact with the surface of the flange ring 3. When the bearing 75 rotates, the inclination sensor 77 provided can detect the deflection angle of the bearing 75. Through the bearing 75, the changes in the size and surface curvature of the flange ring 3 during heating can be detected. By detecting the changes in the size and curvature of the flange ring 3, it can be determined whether the sealing performance and size of the parts installed by the Dewar ring body 2 through the flange ring 3 are qualified during the installation and use processes of the Dewar ring body 2.

[0064] Among them, the shaft roller 76 is in close contact with the outer surface of the flange ring 3 and rolls as the flange ring 3 expands. The change in the angle between the connecting rod 71 and the axis of the flange ring 3 can very sensitively reflect the minute size and curvature changes of the flange ring 3.

[0065] The inclination sensor 77 can accurately detect the deflection angle of the bearing 75, thereby indirectly measuring the curvature change of the flange ring 3. As the base 53 makes a circular motion around the flange ring 3, the shaft roller 76 rolls on the entire surface of the flange ring 3, realizing continuous monitoring of the flange ring 3. This enables real-time data acquisition throughout the entire test process, rather than just measuring at a specific point.

[0066] By detecting the size and curvature changes of the flange ring 3 after thermal expansion, its sealing performance under high-temperature conditions can be evaluated. If the flange ring 3 undergoes significant deformation or curvature change after heating, it may lead to sealing failure. The torsion spring 74 provides torsion for the connecting rod 71 to ensure that the shaft roller 76 always remains in close contact with the surface of the flange ring 3, maintaining good contact even when the flange ring 3 expands due to heating, thus ensuring the accuracy and stability of the detection.

[0067] Embodiment 4. Based on the thickness detection mechanism 6 proposed in Embodiment 1, this embodiment provides a further technical solution for the thickness detection mechanism 6.

[0068] The thickness detection mechanism 6 includes a mounting shell 62. A support rod 65 is provided on the inner wall of the mounting shell 62. A partition 611 is provided in the middle of the inner wall of the mounting shell 62. Absolute value scales 66 are provided on the outer surface of the support rod 65 on both sides of the partition 611. A number of equally spaced scale holes 60 are formed on the outer surfaces of the absolute value scales 66.

[0069] Two ultra-clear CMOS sensors 68 are symmetrically arranged on the inner wall of the mounting shell 62. High-power LEDs 69 corresponding to the positions of the ultra-clear CMOS sensors 68 are provided on both sides of the partition 611. Notch openings 64 are formed on both sides of the mounting shell 62.

[0070] Two sliding groove blocks 67 are provided on the inner wall of the mounting shell 62. Springs 612 are provided inside the two sliding groove blocks 67. One end of each of the two absolute value scales 66 is provided with an arc bead rod 63. A data line 61 is provided on the outer surface of the mounting shell 62. One end of the data line 61 is electrically connected to the data detection box 51. The mounting shell 62 is fixedly installed on one side of the connecting rod 71.

[0071] It should be noted that when the connecting rod 71 moves, it will also drive the mounting shell 62 to move. The two arc bead rods 63 provided are stuck at the upper and lower ends of the two flange rings 3. The usage method of the two arc bead rods 63 is as Figure 14 shown. Ball bearings are installed at the ends where the two arc bead rods 63 contact the surface of the flange ring 3 to reduce the friction generated by the contact movement between the arc bead rods 63 and the flange ring 3. When the flange ring 3 heats up and undergoes metal expansion, the size of the flange ring 3 changes, and the gap and sealing performance between the two flange rings 3 will also change. Since the size change of the flange ring 3 is very small;

[0072] When the two flange rings 3 expand due to heat, the two arc bead rods 63 both push the absolute value scale 66 to rotate on the outer surface of the support rod 65. The rotation of the absolute value scale 66 drives the movement of the scale position of the scale hole 60. The high-power LED 69 irradiates the ultra-clear CMOS sensor 68 through the light passing through the scale hole 60. The ultra-clear CMOS sensor 68 belongs to the clear CMOS sensor in the prior art and has a very high pixel density, which can reach tens of millions or even hundreds of millions of pixels, enabling them to capture extremely fine details. When the absolute value scale 66 moves, it will slide inside the sliding groove block 67, and the absolute value scale 66 will push the spring 612 to contract. By changing the position of the absolute value scale 66, it is possible to detect the thickness and expansion index of each part of the flange ring 3 after the arc bead rod 63 detects one circle around the flange ring 3 during the heating process of the flange ring 3. Through these indexes, it is possible to detect whether the quality of the flange ring 3 and the Dewar ring body 2 is qualified when the Dewar ring body 2 is installed with other installation parts.

[0073] Among them, the balls on the arc bead rod 63 are in contact with the surface of the flange ring 3 and move as the flange ring 3 expands, so that the minute thickness change of the flange ring 3 can be detected very sensitively, and the position change of the absolute value scale 66 can accurately reflect the thickness change of the flange ring 3.

[0074] The contact between the arc bead rod 63 and the surface of the flange ring 3 is dynamic and can quickly respond to any change of the flange ring 3, ensuring the real-time and accuracy of the data. By detecting the thickness change of the flange ring 3 after thermal expansion, its sealing performance under high-temperature conditions can be evaluated. If the flange ring 3 undergoes significant deformation or thickness change after heating, it may lead to sealing failure. Through the detailed detection of the flange ring 3, its dimensional stability under different temperature conditions can be ensured, thus guaranteeing the connection quality between the Dewar ring body and other installation parts. The function of the spring 612 is to maintain the contact force between the absolute value scale 66 and the flange ring 3, ensuring that the scale can accurately follow the change of the flange ring 3 when the flange ring 3 expands due to heating.

[0075] The present invention also provides an application method of a high-temperature superconducting tokamak Dewar ring body measuring device. The specific application method of the tokamak Dewar ring body measuring device is as follows:

[0076] S1. Install the heating mechanism 8 on the inner wall of the Dewar ring body 2, then install the top cover 1 on the Dewar ring body 2 so that the two flange rings 3 are aligned and fixed with bolts, and then dock and install the two sets of installation mechanisms 4 below the flange rings 3.

[0077] S2. When detecting the Dewar ring body 2 and the flange rings 3, the heating mechanism 8 raises the temperature and transfers the temperature to the two flange rings 3. By raising the temperature and detecting the influence of the temperature on the size of the installed flange rings 3, the heating expansion values of the flange rings 3 at different temperatures can be detected by the detection mechanism 5.

[0078] S3. The surface curvature change of the flange rings 3 after heating can be detected by the curvature detection mechanism 7, and the thickness detection mechanism 6 is provided to detect the tightness between the two installed flange rings 3 according to the different temperatures of the flange rings 3.

[0079] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-temperature superconducting Tokamak Dewar ring measuring device, comprising a Dewar ring (2), wherein a top cover (1) is arranged at the upper end of the Dewar ring (2), and flange rings (3) are arranged on the outer surfaces of the top cover (1) and the Dewar ring (2), characterized in that: The lower end of the flange ring (3) is fixedly mounted with two mounting mechanisms (4) in a circular ring shape by bolts, the upper ends of the two mounting mechanisms (4) are each provided with a detection mechanism (5) for detecting the thermal expansion coefficient of the flange ring (3), the interior of the two detection mechanisms (5) is each provided with a curvature detection mechanism (7) for detecting the curvature change of the flange ring (3) after being heated, one side of the two curvature detection mechanisms (7) is each provided with a thickness detection mechanism (6) for detecting the thickness change of the two flange rings (3) after being heated and collided, and the interior of the top cover (1) and the Dewar ring body (2) are jointly provided with a heating mechanism (8) for heating the two flange rings (3); The thickness detection mechanism (6) comprises a mounting shell (62), a support rod (65) being arranged on the inner wall of the mounting shell (62), a partition plate (611) being arranged in the middle of the inner wall of the mounting shell (62), an absolute value scale (66) being arranged on the outer surface of the support rod (65) and on both sides of the partition plate (611), and a plurality of scale holes (60) being arranged on the outer surface of the absolute value scale (66) at equal intervals; The detection mechanism (5) comprises a base (53), a circumference measuring instrument (52) is arranged on one side of the upper end of the base (53), the base (53) is fixedly mounted on the upper end of the mounting seat (41), a data detection box (51) is arranged on the upper end of the base (53), and two detection rods (54) are symmetrically arranged on one side of the data detection box (51); The curvature detection mechanism (7) comprises a mounting ring (72), a support shaft (73) is arranged in the middle of the mounting ring (72), and the support shaft (73) is fixedly mounted on the upper end of the base (53), a bearing (75) is rotatably mounted on the outer surface of the support shaft (73) and located inside the mounting ring (72), and a torsion spring (74) is arranged on the outer surface of the support shaft (73) and located at the upper end of the bearing (75).

2. The high temperature superconducting Tokamak Dewar ring measurement device according to claim 1, characterized in that: The mounting mechanism (4) comprises a ball seat (43), a plurality of balls (44) are arranged inside the ball seat (43), a slip ring (42) is slidably mounted inside the ball seat (43), and a mounting seat (41) is arranged at the upper end of the slip ring (42).

3. The high temperature superconducting Tokamak Dewar ring measurement device according to claim 1, characterized in that: A slide bar (56) is slidably mounted inside the detection rod (54); a ring plate (58) is provided in the middle of the outer surface of the slide bar (56); and a tension spring (57) is sleeved on the outer surface of the ring plate (58); a roller (55) is provided at one end of the slide bar (56) and an iron core (59) is provided at the other end; a secondary coil (512) and a primary coil (511) are provided on one side of the inner wall of the detection rod (54); and the secondary coil (512) and the primary coil (511) are sleeved on the outside of the iron core (59).

4. The high temperature superconducting Tokamak Dewar ring measurement device according to claim 1, characterized in that: A connecting rod (71) is provided on one side of the outer surface of the bearing (75), a shaft roller (76) is provided on one end of the connecting rod (71), an inclination sensor (77) is provided on one side of the outer surface of the bearing (75), a transmission line (78) is provided on one side of the inclination sensor (77), and one end of the transmission line (78) is electrically connected to the data detection box (51).

5. The high temperature superconducting Tokamak Dewar ring measurement device according to claim 1, characterized in that: Two ultra-clear CMOS sensors (68) are symmetrically arranged on the inner wall of the mounting shell (62), high-power LEDs (69) corresponding to the positions of the ultra-clear CMOS sensors (68) are arranged on both sides of the partition (611), and notches (64) are opened on both sides of the mounting shell (62).

6. The high temperature superconducting Tokamak Dewar ring measurement device according to claim 1, characterized in that: The inner wall of the mounting shell (62) is provided with two slide blocks (67), the interiors of the two slide blocks (67) are provided with springs (612), one end of the two absolute value scales (66) are provided with arc bead rods (63), the outer surface of the mounting shell (62) is provided with a data line (61), and one end of the data line (61) is electrically connected to the data detection box (51), and the mounting shell (62) is fixedly mounted on one side of the connecting rod (71).

7. The high temperature superconducting Tokamak Dewar ring measurement device according to claim 1, characterized in that: The heating mechanism (8) comprises a temperature-insulating ring (81), the inner wall of the temperature-insulating ring (81) being provided with two heat-conducting ring plates (82), the interiors of the two heat-conducting ring plates (82) being provided with heating wires (83), elastic rings (84) being provided on both upper and lower sides of the temperature-insulating ring (81), and the two heat-conducting ring plates (82) being respectively tightly attached to the inner walls of the top cover (1) and the Dewar ring body (2).

8. An application method of the high temperature superconducting Tokamak Dewar ring measurement device according to any one of claims 1 to 7, characterized in that: The specific application method of the Tokamak Dewar Ring Measurement Equipment is as follows: S1. Install the heating mechanism (8) on the inner wall of the Dewar ring (2), then install the top cover (1) on the Dewar ring (2) so that the two flange rings (3) are aligned and fixed with bolts, and then butt-mount the two sets of mounting mechanisms (4) below the flange rings (3); S2. When the Dewar ring (2) and the flange ring (3) are tested, the heating mechanism (8) increases the temperature and transmits the temperature to the two flange rings (3). The effect of the temperature on the size of the flange ring (3) after installation is tested by increasing the temperature. The thermal expansion value of the flange ring (3) at different temperatures can be tested by the testing mechanism (5). S3. The curvature detection mechanism (7) can detect the change in the surface curvature of the flange ring (3) after the temperature is increased, and the thickness detection mechanism (6) is provided to detect the tightness between the two flange rings (3) after installation according to the different temperatures of the flange rings (3).

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