A high-stability crystal cooling device and a cooling simulation analysis method thereof

Abstract

The present application relates to a kind of cooling device of optical device and its cooling simulation analysis method, to solve the problem of poor damping effect, low stiffness of cooling pipe and low cooling efficiency of existing crystal cooling device, and provide a kind of high stability crystal cooling device and its cooling simulation analysis method.The high stability crystal cooling device provided by the present application, including cooling pipe, clamping piece arranged on the cooling pipe, heat conduction module arranged on the cooling pipe, heat insulation assembly and light blocking assembly;Cooling pipe includes sequentially connected liquid inlet section, liquid inlet avoidance section, liquid inlet cooling section, backflow section, liquid outlet cooling section, liquid outlet avoidance section and liquid outlet section;Clamping piece includes first clamping piece, two second clamping pieces and two third clamping pieces, clamping piece is used to install cooling pipe on monochromator body and play damping effect;Heat conduction module is used to enhance the heat dissipation effect, clamping crystal and cooling pipe.The damping effect and heat dissipation effect of overall device are good.

Description

Technical Field

[0001] This invention relates to an optical device cooling device and its cooling simulation analysis method, specifically to a highly stable crystal cooling device and its cooling simulation analysis method. Background Technology

[0002] Synchrotron radiation is a polychromatic light with wavelengths ranging from infrared to hard X-rays. It cannot generally be used directly. Technicians typically use various optical elements to process this continuous-spectrum polychromatic light into monochromatic light that meets experimental requirements (energy, flux, monochromaticity, polarization, spot size, etc.), and then safely, reliably, and efficiently transmit the monochromatic light to the experimental station for use in various scientific experiments. These functions are achieved through a beamline system, with the monochromator being the core device. The monochromator's function is to change the angle between the optical element and the synchrotron radiation to obtain monochromatic light of different wavelengths. Monochromators can be classified in various ways, such as by the type of optical element (grating monochromators, crystal monochromators, and multilayer monochromators); crystal monochromators can be further classified by diffraction method (Laue monochromators and Bragg monochromators); by the number of crystals (single-crystal monochromators, double-crystal monochromators, and quad-crystal monochromators); by crystal cutting method (symmetric monochromators and asymmetric monochromators); and by crystal arrangement (dispersive monochromators and achromatic monochromators).

[0003] In a dual-crystal monochromator, synchrotron radiation directly illuminates the monochromator crystal during propagation, subjecting the crystal to a high thermal load. Some heat is absorbed by the crystal, increasing its surface temperature and internal temperature gradient, thus generating thermal stress. This leads to negative deformations such as overall bending, localized bulging of crystal faces, and changes in lattice constant. Prolonged overheating can damage optical components, ultimately reducing beam quality and stability. Therefore, cooling the first crystal is necessary to mitigate the impact of high thermal load on beam quality and stability. Cooling methods include water cooling and liquid nitrogen cooling.

[0004] The cooling liquid flows turbulently through the cooling system pipes. This turbulence consists of vortices of varying scales, creating a highly unstable flow field. As the turbulent fluid flows past the pipe walls, it exerts alternating fluid forces on the surface, causing the pipes to reciprocate. This reciprocating motion alters the fluid flow regime, thus changing the fluid forces acting on the pipe walls. This fluid-solid interaction phenomenon is called flow-induced vibration. This fluid vibration alters the liquid flow state, inducing vibrations on the pipe surface. These pipe vibrations, in turn, cause crystal jitter by gripping the copper block, ultimately affecting the stability of the synchrotron radiation beam. During the cooling cycle, the liquid eddies and the stimulated vibrations of the pipes increase the amplitude of the crystal vibrations. Therefore, measures are needed to reduce the vibration of the pipe cooling system and improve the stability of the beam emitted from the monochromator crystal.

[0005] See existing crystal cooling devices Figure 1 The prior art includes a cooling pipe 01, a fixing device 02 installed on the cooling pipe 01, and a heat-conducting element 03 installed on the cooling pipe 01. However, the problem with this prior art is that the impact of the vibration of the cooling pipe 01 on the stability of the crystal is not taken into account. The fixing device 02 only plays a simple fixing role and has a poor vibration reduction effect. The cooling pipe 01 uses a multi-segment connected hose with inconsistent pipe inner diameters. The interaction between the liquid and the pipe wall is more obvious, resulting in low stiffness and low cooling efficiency of the cooling pipe 01. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of poor vibration reduction effect, low stiffness of cooling pipe and low cooling efficiency of existing crystal cooling devices, and to provide a highly stable crystal cooling device and its cooling simulation analysis method.

[0007] The design concept of this invention is as follows: Based on existing crystal cooling devices, this invention optimizes the layout, size parameters, inner diameter and bending angle of the cooling pipe, and sets a first clamping member, a second clamping member and a third clamping member on the cooling pipe to reduce the impact of vibration during coolant flow on the crystal; the cooling pipe of this invention adopts a combination of multi-segment corrugated pipe and rigid pipe and has a uniform inner diameter and wall thickness, resulting in high overall rigidity.

[0008] To achieve the above-mentioned objectives, the technical solution provided by this invention is as follows:

[0009] A highly stable crystal cooling device is disposed on a crystal support assembly, the crystal support assembly including a crystal stage panel and a crystal holder disposed on the side of the crystal stage panel, the crystal holder having a crystal disposed thereon; its special feature is:

[0010] It includes a cooling pipe, a clamping component disposed on the cooling pipe, a heat-conducting module disposed on the cooling pipe, a heat insulation component disposed between the crystal support and the crystal, and a light-blocking component;

[0011] The cooling pipe includes, in sequence, an inlet section, an inlet clearance section, an inlet cooling section, a reflux section, an outlet cooling section, an outlet clearance section, and an outlet section. The inlet and outlet sections are divided into straight sections and bent sections. Each bent section consists of two interconnected bends with perpendicular bends and a circular arc transition. Two straight sections and two bent sections are respectively provided. The inlet and outlet clearance sections are both U-shaped pipes with a circular arc transition and are respectively provided. One end of each U-shaped pipe is connected to the corresponding inlet section. The cooling pipe is connected to the bend section of the liquid outlet section; the liquid inlet cooling section and the liquid outlet cooling section are divided into straight pipe sections and bend sections, with the bend sections connected to the other end of the corresponding U-shaped pipes respectively; the return section is a U-shaped pipe, with both ends bent and connected to the liquid inlet cooling section and the liquid outlet cooling section respectively, with a rounded transition; all bends in the cooling pipe are made of corrugated pipe; the clamping components include one first clamping component, two second clamping components, and two third clamping components; the first clamping component clamps at the connection between the straight pipe section and the bend section of the liquid inlet and liquid outlet sections, and is connected to the crystal stage. Panel connection; two second clamping members are clamped on the inlet and outlet clearance sections and connected to the crystal stage panel. One is located near the lower part of the crystal stage panel, and the other is located at the connection between the inlet section bend and the inlet clearance section, and the outlet section bend and the outlet clearance section; two third clamping members are clamped on the side near the outlet of the inlet clearance section and the inlet of the outlet clearance section and connected to the side of the crystal support. One third clamping member is connected to the upper side of the crystal support, and the other is connected to the side of the crystal support. The lower part includes two heat-conducting modules symmetrically arranged on the inlet cooling section and the outlet cooling section. The heat-conducting modules are located on the crystal support, and multiple crystal clamping screws are arranged on the heat-conducting modules to clamp the crystal between the two heat-conducting modules. The heat-conducting module is a cuboid, and its larger side has an arc-shaped groove on the upper part for installing and fixing the inlet cooling section or the outlet cooling section. The light-blocking assembly is located on the outer side of both ends of the crystal and is connected to the heat-conducting modules. The heat insulation assembly includes a crystal heat insulation plate and a crystal heat insulation pad arranged from bottom to top.

[0012] The crystal insulation board and crystal insulation pad provide protection, preventing the temperature transmitted by the crystal during operation from damaging other components.

[0013] Furthermore, the first clamping member is assembled from a first cuboid module and a second cuboid module, with two first through holes in the middle for fixing the liquid inlet section and the liquid outlet section, one being elongated and the other circular; the elongated first through hole is used to clamp the curved section of the liquid outlet section, and the circular first through hole is used to clamp the liquid inlet section; two elongated second through holes are respectively provided at both ends of the first module for connecting to the crystal stage panel; the connector passes through the two elongated second through holes to fix the first module to the crystal stage panel; the second clamping member includes a clamping end and a connecting end, the clamping end including a third cuboid module, and the connecting end including a right-angle retainer; one end of the right-angle retainer is connected to the third module, and the other end is provided with an elongated second through hole for connecting to the crystal stage panel; The third module is composed of two small cuboid blocks joined together, with a circular first through hole in the middle for fixing the liquid inlet and liquid outlet clearance sections; the connector passes through the elongated second through hole to fix the right-angle retainer to the crystal stage panel; the third clamping member includes a clamping end and a connecting end, the clamping end including a cuboid fourth module, and the connecting end including a cuboid retainer; the cuboid retainer is connected to the fourth module; the fourth module is composed of two small cuboid blocks joined together, with a circular first through hole in the middle for fixing the liquid inlet and liquid outlet clearance sections, or the liquid inlet cooling section and the liquid outlet cooling section; the bottom of the cuboid retainer has a circular second through hole for connecting to the crystal support; the connector is disposed in the second through hole to fix the cuboid retainer to the crystal support.

[0014] Furthermore, the heat-conducting module has four mounting holes symmetrically arranged on its two smaller sides for mounting light-blocking components, and a rectangular groove in the middle of its larger side. The rectangular groove contains a row of third through holes for mounting crystal clamping screws, and the third through holes contain crystal clamping screws for clamping crystals. The lower outer side of the heat-conducting module has at least two first protrusions, each of which has a fourth through hole for fixing the heat-conducting module. The lower inner side of the heat-conducting module has at least two second protrusions for fixing crystals.

[0015] Furthermore, the light-blocking assembly includes a light-blocking plate fixing block and a light-blocking plate connected to the upper part of the light-blocking plate fixing block; the light-blocking plate fixing block is connected to the heat-conducting module. The function of the light-blocking plate fixing block and the light-blocking plate is to block light and protect other components, preventing high-temperature damage to other components when the incident light is deflected.

[0016] Furthermore, the inlet cooling section, outlet cooling section, and reflux section are made of oxygen-free copper, while the remaining parts are made of structural steel; the heat-conducting module is made of oxygen-free copper, and an indium foil is placed between the heat-conducting module and the crystal. The advantage of using oxygen-free copper for the inlet cooling section, outlet cooling section, reflux section, and heat-conducting module is its good thermal conductivity; the purpose of setting the indium foil is to improve the heat exchange efficiency between the heat-conducting module and the crystal.

[0017] Furthermore, the crystal insulation board is made of aluminum alloy, and the crystal insulation pad is made of fiberglass, which has the advantage of good thermal insulation.

[0018] Furthermore, each of the liquid inlet clearance section and the liquid outlet clearance section located between the two second clamping members is provided with a pipe joint; a pipe joint is provided at the inlet of the liquid inlet section and at the outlet of the liquid outlet section. The purpose of providing pipe joints is to ensure connection strength.

[0019] Furthermore, the wall thickness of the entire cooling pipe is 2mm and the inner diameter is 8mm; the coolant flowing into the cooling pipe is liquid nitrogen.

[0020] This invention also provides a cooling simulation analysis method for the aforementioned highly stable crystal cooling device, characterized by the following steps:

[0021] Step 1: Use SOLIDWORKS to model the high-stability crystal cooling device, obtain the 3D model diagram, and output it as a *.x_t file;

[0022] Step 2: Import the *.x_t file obtained in Step 1 into the DM model processor in ANSYS Workbench. Use the fill and patch tools in DM to extract the flow channel model. Then import the flow channel model into the Mesh processor in Workbench. Use the multi-zone meshing method to mesh the flow channel model and set the names of each inlet, outlet and wall of the model. Output as a *.mesh file.

[0023] Step 3: Use ANSYS Fluent to load the *.mesh file obtained in Step 2, set the mathematical model, physical property parameters, boundary conditions, and select the calculation method to perform fluid simulation analysis and solid-state simulation analysis, and obtain the results of fluid simulation analysis and solid-state simulation analysis.

[0024] Step 4: Perform fluid-structure interaction simulation analysis, set the mathematical model and boundary conditions of the contact surface between the cooling pipe and the coolant, and set eleven monitoring points on the outer wall of the cooling pipe to simulate the working environment, perform vibration simulation analysis, and obtain time-domain displacement data at each monitoring point; the eleven monitoring points include two monitoring points respectively set in the middle of the inlet cooling section and the middle of the outlet cooling section, four monitoring points respectively set in the contact parts between the inlet clearance section and the outlet clearance section and the second clamping member, four monitoring points respectively set in the contact parts between the inlet clearance section and the outlet clearance section and the third clamping member, and one monitoring point set in the bend section of the outlet section that passes through the first clamping member;

[0025] Step 5: Organize the results of the above fluid simulation analysis, solid-state simulation analysis and fluid-structure interaction simulation analysis to complete the cooling simulation analysis of the highly stable crystal cooling device.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The high-stability crystal cooling device provided by the present invention has a cooling pipe with optimized inner diameter, bending angle and length, and adopts a combination of multi-section corrugated pipe and rigid pipe. The entire section adopts a uniform inner diameter of 8mm and a wall thickness of 2mm, which results in high overall rigidity. Heat conduction modules are provided on the liquid inlet cooling section and the liquid outlet cooling section, so that the overall cooling effect of the cooling device meets the requirements.

[0028] 2. The high-stability crystal cooling device provided by the present invention has a clamping component consisting of a first clamping component, a second clamping component, and a third clamping component, which together are used to fix the cooling pipe and reduce the vibration caused by the coolant in the cooling pipe. The device is firmly fixed and has a good vibration reduction effect.

[0029] 3. The high-stability crystal cooling device provided by the present invention is equipped with a heat-conducting module. The function of the heat-conducting module is to enhance the heat dissipation effect, clamp the crystal and the cooling tube, and achieve high heat exchange efficiency.

[0030] 4. The high-stability crystal cooling device provided by the present invention has an inlet cooling section, an outlet cooling section, a reflux section, and a heat conduction module made of oxygen-free copper. An indium foil is provided between the heat conduction module and the crystal, resulting in good heat conduction. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of an existing crystal cooling device;

[0032] Figure 1 Explanation of reference numerals in the attached drawings: 01-cooling pipe, 02-fixing device, 03-heat conducting element;

[0033] Figure 2 A schematic diagram of the actual working environment of an embodiment of the high-stability crystal cooling device provided by the present invention;

[0034] Figure 3 A schematic diagram of an embodiment of the high-stability crystal cooling device provided by the present invention;

[0035] Figure 4 A schematic diagram of the structure of the first clamping member in an embodiment of the high-stability crystal cooling device provided by the present invention;

[0036] Figure 5 A schematic diagram of the structure of the second clamping member in an embodiment of the high-stability crystal cooling device provided by the present invention;

[0037] Figure 6 A schematic diagram of the structure of the third clamping member in an embodiment of the high-stability crystal cooling device provided by the present invention;

[0038] Figure 7 A schematic diagram of the cooling pipe structure in an embodiment of the high-stability crystal cooling device provided by the present invention;

[0039] Figure 8 A side view of the heat-conducting module in an embodiment of the high-stability crystal cooling device provided by the present invention;

[0040] Figure 9 A top view of the heat-conducting module in an embodiment of the high-stability crystal cooling device provided by the present invention;

[0041] Figure 10 A flowchart illustrating the cooling simulation analysis method for an embodiment of the high-stability crystal cooling device provided by the present invention;

[0042] Figures 2 to 9 Explanation of reference numerals in the attached drawings: 1-Cooling pipe, 11-Inlet section, 12-Outlet section, 13-Inlet clearance section, 14-Outlet clearance section, 15-Inlet cooling section, 16-Outlet cooling section, 17-Recirculation section; 2-Clamping component, 21-First clamping component, 211-First module, 212-Second module, 22-Second clamping component, 221-Third module, 222-Right-angle retainer, 23-Third clamping component, 231-Fourth module, 232-Cuboid retainer, 201-First through hole 202-Second through hole; 3-Heat conduction module; 301-Mounting hole; 302-Third through hole; 303-Fourth through hole; 304-Arc-shaped groove; 305-Rectangular groove; 306-First protrusion; 307-Second protrusion; 4-Pipe joint; 5-Crystal platform; 6-Crystal support; 7-Insulation component; 71-Crystal insulation board; 72-Crystal insulation pad; 8-Crystal; 9-Crystal clamping screw; 10-Light blocking component; 101-Light blocking plate fixing block; 102-Light blocking plate. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] A highly stable crystal cooling device, see [link / reference] Figures 2 to 9 A highly stable crystal cooling device is mounted on a crystal support assembly. The crystal support assembly includes a crystal stage 5 and a crystal support 6 mounted on the side of the crystal stage 5. A crystal 8 is mounted on the crystal support 6. The device includes a cooling pipe 1, a clamping component 2 mounted on the cooling pipe 1, a heat-conducting module 3 mounted on the cooling pipe 1, a heat insulation component 7 positioned between the crystal support 6 and the crystal 8, and a light-blocking component 10. The cooling pipe 1 includes, in sequence, an inlet section 11, an inlet clearance section 13, an inlet cooling section 15, a reflux section 17, an outlet cooling section 16, an outlet clearance section 14, and an outlet section 12. The inlet section 11 and the outlet section 12 are divided into a straight pipe section and a curved pipe section, with both curved pipe sections consisting of a... The cooling pipe 1 consists of two interconnected bent sections, with the bending surfaces of the two sections perpendicular to each other and forming a rounded transition. Two straight pipe sections and two bent pipe sections are respectively provided. The inlet clearance section 13 and the outlet clearance section 14 are both U-shaped pipes with rounded transitions and are respectively provided. One end of each U-shaped pipe is connected to the bent pipe section of the corresponding inlet section 11 and outlet section 12. The inlet cooling section 15 and the outlet cooling section 16 are divided into straight pipe sections and bent pipe sections, with the bent pipe sections respectively connected to the other end of the corresponding U-shaped pipes. The return section 17 is a U-shaped pipe, with both ends bent and connected to the inlet cooling section 15 and the outlet cooling section 16, forming a rounded transition. All bent sections in the cooling pipe 1 are made of corrugated pipe. The clamping member 2 includes one... The system comprises a first clamping member 21, two second clamping members 22, and two third clamping members 23. The first clamping member 21 clamps at the connection between the straight and curved sections of the inlet section 11 and the outlet section 12, and is connected to the crystal stage panel 5. The two second clamping members 22 are both clamped on the inlet clearance section 13 and the outlet clearance section 14, and are connected to the crystal stage panel 5. One is positioned near the lower part of the crystal stage panel 5, and the other is positioned at the connection between the curved section of the inlet section 11 and the inlet clearance section 13, and the curved section of the outlet section 12 and the outlet clearance section 14. The two third clamping members 23 are both clamped near the outlet of the inlet clearance section 13 and near the inlet of the outlet clearance section 14, and are connected to the side of the crystal support 6. Three clamping members 23 are connected to the upper side of the crystal support 6, and another is connected to the lower side of the crystal support 6; two heat-conducting modules 3 are symmetrically arranged on the liquid inlet cooling section 15 and the liquid outlet cooling section 16. The heat-conducting modules 3 are located on the crystal support 6, and multiple crystal clamping screws 9 are arranged on the heat-conducting modules 3 to clamp the crystal 8 between the two heat-conducting modules 3; the heat-conducting module 3 is a cuboid, and its larger side upper part is provided with an arc-shaped groove 304 for installing and fixing the liquid inlet cooling section 15 or the liquid outlet cooling section 16; the light-blocking assembly 10 is located on the outer side of both ends of the crystal 8 and is connected to the heat-conducting module 3; the heat insulation assembly 7 includes a crystal heat insulation plate 71 and a crystal heat insulation pad 72 arranged from bottom to top.

[0045] The crystal insulation plate 71 and crystal insulation pad 72 serve a protective function, preventing the temperature transmitted by the crystal 8 during operation from damaging other components.

[0046] The first clamping member 21 is composed of a cuboid first module 211 and a cuboid second module 212, with two first through holes 201 in the middle for fixing the liquid inlet section 11 and the liquid outlet section 12. One is elongated and the other is circular. The elongated first through hole 201 is used to clamp the curved section of the liquid outlet section 12, and the circular first through hole 201 is used to clamp the liquid inlet section 11. Two elongated second through holes 202 are respectively provided at both ends of the first module 211 for connecting to the crystal stage panel 5. The connector passes through the two elongated second through holes 202 to fix the first module 211 to the crystal stage panel 5. The second clamping member 22 includes a clamping end and a connecting end. Its clamping end includes a cuboid third module 221, and its connecting end includes a right-angle retainer 222. One end of the right-angle retainer 222 is connected to the third module 221, and the other end is provided with an elongated second through hole 202 for connecting to the crystal stage panel 5. Module 221 is composed of two small cuboid blocks joined together, with a circular first through hole 201 in the middle for fixing the liquid inlet clearance section 13 and the liquid outlet clearance section 14; the connector passes through the elongated second through hole 202 to fix the right-angle retainer 222 to the crystal stage panel 5; the third clamping member 23 includes a clamping end and a connecting end, the clamping end including a cuboid fourth module 231, and the connecting end including a cuboid retainer 232; the cuboid retainer 232 and the fourth... Module 231 is connected; the fourth module 231 is composed of two small cuboid blocks spliced ​​together, and a circular first through hole 201 is provided in the middle for fixing the liquid inlet clearance section 13 and the liquid outlet clearance section 14, or the liquid inlet cooling section 15 and the liquid outlet cooling section 16; the bottom of the cuboid fixer 232 is provided with a circular second through hole 202 for connecting the crystal support 6; the connector is provided in the second through hole 202 to fix the cuboid fixer 232 on the crystal support 6.

[0047] The heat-conducting module 3 has four mounting holes 301 symmetrically arranged on its two smaller sides for mounting the light-blocking component 10. The larger side has a rectangular groove 305 in the middle, and a row of third through holes 302 for mounting crystal clamping screws 9 are arranged in the rectangular groove 305. The third through holes 302 are provided with crystal clamping screws 9 for clamping crystal 8. The lower outer side of the heat-conducting module 3 has at least two first protrusions 306, and each of the two first protrusions 306 has a fourth through hole 303 for fixing the heat-conducting module 3. The lower inner side of the heat-conducting module 3 has at least two second protrusions 307 for fixing crystal 8.

[0048] The light-blocking assembly 10 includes a light-blocking plate fixing block 101 and a light-blocking plate 102 connected to the upper part of the light-blocking plate fixing block 101; the light-blocking plate fixing block 101 is connected to the heat-conducting module 3. The function of the light-blocking plate fixing block 101 and the light-blocking plate 102 is to block light and protect other components, preventing high-temperature damage to other components when the incident light is deflected.

[0049] The inlet cooling section 15, outlet cooling section 16, and reflux section 17 are made of oxygen-free copper, while the remaining parts are made of structural steel. The heat-conducting module 3 is also made of oxygen-free copper, and an indium foil is placed between the heat-conducting module 3 and the crystal 8. The advantage of using oxygen-free copper for the inlet cooling section 15, outlet cooling section 16, reflux section 17, and heat-conducting module 3 is its good thermal conductivity. The purpose of the indium foil is to improve the heat exchange efficiency between the heat-conducting module 3 and the crystal 8. In practical applications, the material of the heat-conducting module 3 can also be replaced with other metals or non-metals with good thermal conductivity.

[0050] The crystal insulation board 71 is made of aluminum alloy, and the crystal insulation pad 72 is made of fiberglass, both of which have the advantage of good thermal insulation.

[0051] Each of the liquid inlet clearance section 13 and the liquid outlet clearance section 14 located between the two second clamping members 22 is provided with a pipe joint 4; a pipe joint 4 is provided at the inlet of the liquid inlet section 11 and the outlet of the liquid outlet section 12. The purpose of providing the pipe joint 4 is to ensure the connection strength.

[0052] The cooling pipe 1 has a wall thickness of 2mm and an inner diameter of 8mm throughout. The coolant flowing through the cooling pipe 1 is liquid nitrogen. Simulation analysis shows that the greater the wall thickness of the cooling pipe 1, the more significant the vibration reduction effect. Choosing a thicker pipe can significantly reduce vibration and improve stability. However, the greater the wall thickness, the worse the cooling effect on the crystals. Therefore, the pipe wall thickness is chosen to be 2mm. The advantage of choosing liquid nitrogen as the coolant is that it is economical and practical. The arrows in the figure indicate the flow direction of the liquid nitrogen.

[0053] This invention also provides a cooling simulation analysis method for the aforementioned highly stable crystal cooling device, see [link to relevant documentation]. Figure 10 This includes the following steps:

[0054] Step 1: Use SOLIDWORKS to model the high-stability crystal cooling device, obtain the 3D model diagram, and output it as a *.x_t file;

[0055] Step 2: Import the *.x_t file obtained in Step 1 into the DM model processor in ANSYS Workbench. Use the fill and patch tools in DM to extract the flow channel model. Then import the flow channel model into the Mesh processor in Workbench. Use the multi-zone meshing method to mesh the flow channel model and set the names of each inlet, outlet and wall of the model. Output as a *.mesh file.

[0056] Step 3: Use ANSYS Fluent to load the *.mesh file obtained in Step 2, set the mathematical model, physical property parameters, boundary conditions, and select the calculation method to perform fluid simulation analysis and solid-state simulation analysis, and obtain the results of fluid simulation analysis and solid-state simulation analysis.

[0057] Step 4: Perform fluid-structure interaction simulation analysis, set the mathematical model and boundary conditions of the contact surface between the cooling pipe 1 and the coolant, and set eleven monitoring points on the outer wall of the cooling pipe 1 to simulate the working environment, perform vibration simulation analysis, and obtain the time-domain displacement data at each monitoring point; the eleven monitoring points include two monitoring points respectively set in the middle of the liquid inlet cooling section 15 and the middle of the liquid outlet cooling section 16, four monitoring points respectively set in the contact parts between the liquid inlet clearance section 13 and the liquid outlet clearance section 14 and the second clamping member 22, four monitoring points respectively set in the contact parts between the liquid inlet clearance section 13 and the liquid outlet clearance section 14 and the third clamping member 23, and one monitoring point set in the bend section of the liquid outlet section 12 that passes through the first clamping member 21;

[0058] Step 5: Organize the results of the above fluid simulation analysis, solid-state simulation analysis and fluid-structure interaction simulation analysis to complete the cooling simulation analysis of the highly stable crystal cooling device.

[0059] The embodiments of the present invention also performed the above simulation analysis, and the results showed that the maximum value of the displacement power spectrum amplitude at each monitoring point was less than 10 Hz, and the displacement spectral density excitation amplitude was significantly suppressed.

[0060] This invention also provides a testing method for the above-mentioned high-stability crystal cooling device, comprising the following steps:

[0061] Step 1: Assemble a highly stable crystal cooling device;

[0062] Step 2: Pour liquid nitrogen into cooling pipe 1 and wait for the fluid to stabilize;

[0063] Step 3: Test the vibration amplitude of crystal 8 using an autocollimator or interferometer; if the vibration amplitude meets the design requirements, the test is complete; if the vibration amplitude does not meet the test requirements, proceed to step 4.

[0064] Step 4: Disassemble the high-stability crystal cooling device, change at least one of the following: the bending radius of each bent part of the cooling pipe 1, the length of each straight part of the cooling pipe 1, the clamping position of each clamping member 2, and the thickness of the crystal insulation plate 71. Then return to step 1 until the vibration amplitude of the crystal 8 meets the design requirements.

[0065] In this embodiment of the invention, the cooling pipe 1 adopts an optimized inner diameter, bending angle, and length. Heat-conducting modules 3 are installed on the inlet cooling section 15 and outlet cooling section 16 of the cooling pipe 1, ensuring that the overall cooling effect of the cooling device meets the requirements. The clamping member 2 consists of a first clamping member 21, a second clamping member 22, and a third clamping member 23, which together fix the cooling pipe 1 and reduce vibrations caused by the coolant in the cooling pipe 1, providing a firm fixation and good vibration reduction effect. The heat-conducting module 3 enhances heat dissipation, clamps the crystal 8, and clamps the cooling pipe 1, resulting in high heat exchange efficiency. The inlet cooling section 15, outlet cooling section 16, and reflux section 17 of the cooling pipe 1, as well as the heat-conducting module 3, are made of oxygen-free copper. An indium foil is placed between the heat-conducting module 3 and the crystal 8, providing good thermal conductivity.

Claims

1. A highly stable crystal cooling device, disposed on a crystal support assembly, the crystal support assembly including a crystal stage panel (5) and a crystal support (6) disposed on the side of the crystal stage panel (5), the crystal support (6) being provided with a crystal (8); characterized in that: It includes a cooling pipe (1), a clamping member (2) disposed on the cooling pipe (1), a heat-conducting module (3) disposed on the cooling pipe (1), a heat insulation component (7) disposed between the crystal support (6) and the crystal (8), and a light-blocking component (10); The cooling pipe (1) includes an inlet section (11), an inlet clearance section (13), an inlet cooling section (15), a return section (17), an outlet cooling section (16), an outlet clearance section (14), and an outlet section (12) connected in sequence. The inlet section (11) and the outlet section (12) are divided into straight pipe sections and bent pipe sections. Each bent pipe section is composed of two interconnected bent sections. The bending surfaces of the two bent sections are perpendicular to each other and have a circular arc transition. The two straight pipe sections and the two bent pipe sections are respectively provided. The inlet clearance section (13) and the outlet clearance section (14) are connected in sequence. All sections (14) are U-shaped tubes with rounded transitions and corresponding configurations. One end of each U-shaped tube is connected to the bend of the corresponding inlet section (11) and outlet section (12). The inlet cooling section (15) and outlet cooling section (16) are divided into straight sections and bends, with the bends connected to the other end of the corresponding U-shaped tubes. The return section (17) is a U-shaped tube with both ends bent and connected to the inlet cooling section (15) and outlet cooling section (16) with rounded transitions. All bends in the cooling pipe (1) are corrugated. The clamping member (2) includes a first clamping member (21), two second clamping members (22) and two third clamping members (23); The first clamping member (21) is clamped at the connection between the straight and curved sections of the liquid inlet section (11) and the liquid outlet section (12), and is connected to the crystal stage panel (5); the two second clamping members (22) are clamped on the liquid inlet clearance section (13) and the liquid outlet clearance section (14), and are connected to the crystal stage panel (5), one is located near the lower part of the crystal stage panel (5), and the other is located at the connection between the curved section of the liquid inlet section (11) and the liquid inlet clearance section (13), and the curved section of the liquid outlet section (12) and the liquid outlet clearance section (14); the two third clamping members (23) are clamped on the side near the outlet of the liquid inlet clearance section (13) and the inlet of the liquid outlet clearance section (14), and are connected to the side of the crystal support (6), one third clamping member (23) is connected to the upper part of the side of the crystal support (6), and the other is connected to the lower part of the side of the crystal support (6); Two heat-conducting modules (3) are symmetrically arranged on the liquid inlet cooling section (15) and the liquid outlet cooling section (16). The heat-conducting modules (3) are located on the crystal support (6). Multiple crystal clamping screws (9) are arranged on the heat-conducting modules (3) to clamp the crystal (8) between the two heat-conducting modules (3). The heat-conducting module (3) is a cuboid, and its larger side has an arc-shaped groove (304) for installing and fixing the liquid inlet cooling section (15) or the liquid outlet cooling section (16). The light-blocking component (10) is located on the outer side of both ends of the crystal (8) and is connected to the heat-conducting module (3). The insulation component (7) includes a crystalline insulation plate (71) and a crystalline insulation pad (72) arranged from bottom to top.

2. The high-stability crystal cooling device according to claim 1, characterized in that: The first clamping member (21) is assembled from a cuboid first module (211) and a cuboid second module (212). Two first through holes (201) are provided in the middle for fixing the liquid inlet section (11) and the liquid outlet section (12). One is long and the other is circular. The long first through hole (201) is used to clamp the curved section of the liquid outlet section (12), and the circular first through hole (201) is used to clamp the liquid inlet section (11). Two long second through holes (202) are provided at both ends of the first module (211) for connecting to the crystal stage panel (5). The connector passes through the two long second through holes (202) to fix the first module (211) on the crystal stage panel (5). The second clamping member (22) includes a clamping end and a connecting end. The clamping end includes a cuboid third module (221), and the connecting end includes a right-angle retainer (222). One end of the right-angle retainer (222) is connected to the third module (221), and the other end is provided with a long strip second through hole (202) for connecting the crystal stage panel (5). The third module (221) is composed of two small cuboid blocks spliced ​​together, and a circular first through hole (201) is provided in the middle for fixing the liquid inlet clearance section (13) and the liquid outlet clearance section (14). The connecting member passes through the long strip second through hole (202) to fix the right-angle retainer (222) on the crystal stage panel (5). The third clamping member (23) includes a clamping end and a connecting end. The clamping end includes a cuboid fourth module (231), and the connecting end includes a cuboid fixer (232). The cuboid fixer (232) is connected to the fourth module (231). The fourth module (231) is composed of two small cuboid blocks spliced ​​together. A circular first through hole (201) is provided in the middle for fixing the liquid inlet clearance section (13) and the liquid outlet clearance section (14), or the liquid inlet cooling section (15) and the liquid outlet cooling section (16). A circular second through hole (202) for connecting the crystal support (6) is provided at the bottom of the cuboid fixer (232). The connecting member is set in the second through hole (202) to fix the cuboid fixer (232) on the crystal support (6).

3. The high-stability crystal cooling device according to claim 1, characterized in that: The heat-conducting module (3) has four mounting holes (301) symmetrically arranged on two smaller sides for mounting the light-blocking component (10). The larger side has a rectangular groove (305) in the middle. A row of third through holes (302) for mounting crystal clamping screws (9) is arranged in the rectangular groove (305). A crystal clamping screw (9) for clamping crystal (8) is arranged in the third through hole (302). At least two first protrusions (306) are arranged on the lower outer side of the heat-conducting module (3). A fourth through hole (303) for fixing the heat-conducting module (3) is arranged on each of the two first protrusions (306). At least two second protrusions (307) for fixing crystal (8) are arranged on the lower inner side of the heat-conducting module (3).

4. The high-stability crystal cooling device according to claim 3, characterized in that: The light-blocking assembly (10) includes a light-blocking plate fixing block (101) and a light-blocking plate (102) connected to the upper part of the light-blocking plate fixing block (101); the light-blocking plate fixing block (101) is connected to the heat-conducting module (3).

5. The high-stability crystal cooling device according to claim 4, characterized in that: The liquid inlet cooling section (15), liquid outlet cooling section (16) and reflux section (14) are made of oxygen-free copper, and the rest are made of structural steel; the heat conduction module (3) is made of oxygen-free copper, and an indium foil is provided between the heat conduction module (3) and the crystal (8).

6. The high-stability crystal cooling device according to claim 1, characterized in that: The crystal insulation board (71) is made of aluminum alloy, and the crystal insulation pad (72) is made of fiberglass.

7. The high-stability crystal cooling device according to claim 2, characterized in that: Each of the liquid inlet clearance section (13) and the liquid outlet clearance section (14) located between the two second clamping members (22) is provided with a pipe joint (4); each of the inlet of the liquid inlet section (11) and the outlet of the liquid outlet section (12) is provided with a pipe joint (4).

8. The high-stability crystal cooling device according to claim 7, characterized in that: The wall thickness of the entire cooling pipe (1) is 2mm and the inner diameter is 8mm; the coolant flowing into the cooling pipe (1) is liquid nitrogen.

9. A cooling simulation analysis method for a high-stability crystal cooling device according to any one of claims 1 to 8, characterized in that, Includes the following steps: Step 1: Use SOLIDWORKS to model the high-stability crystal cooling device, obtain the 3D model diagram, and output it as a *.x_t file; Step 2: Import the *.x_t file obtained in Step 1 into the DM model processor in ANSYS Workbench. Use the fill and patch tools in DM to extract the flow channel model. Then import the flow channel model into the Mesh processor in Workbench. Use the multi-zone meshing method to mesh the flow channel model and set the names of each inlet, outlet and wall of the model. Output as a *.mesh file. Step 3: Use ANSYS Fluent to load the *.mesh file obtained in Step 2, set the mathematical model, physical property parameters, boundary conditions, and select the calculation method to perform fluid simulation analysis and solid-state simulation analysis, and obtain the results of fluid simulation analysis and solid-state simulation analysis. Step 4: Perform fluid-structure interaction simulation analysis, set the mathematical model and boundary conditions of the contact surface between the cooling pipe (1) and the coolant, and set eleven monitoring points on the outer wall of the cooling pipe (1) to simulate the working environment, perform vibration simulation analysis, and obtain the time-domain displacement data at each monitoring point; the eleven monitoring points include two monitoring points set in the middle of the liquid inlet cooling section (15) and the middle of the liquid outlet cooling section (16), four monitoring points set in the contact parts between the liquid inlet clearance section (13) and the liquid outlet clearance section (14) and the second clamping member (22), four monitoring points set in the contact parts between the liquid inlet clearance section (13) and the liquid outlet clearance section (14) and the third clamping member (23), and one monitoring point set in the bend section of the liquid outlet section (12) that passes through the first clamping member (21); Step 5: Organize the results of the above fluid simulation analysis, solid-state simulation analysis and fluid-structure interaction simulation analysis to complete the cooling simulation analysis of the highly stable crystal cooling device.

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