CN112323139B - Liquid bridge capillary convection experiment device and method for rotary sound field - Google Patents
Liquid bridge capillary convection experiment device and method for rotary sound field Download PDFInfo
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- CN112323139B CN112323139B CN202011320184.1A CN202011320184A CN112323139B CN 112323139 B CN112323139 B CN 112323139B CN 202011320184 A CN202011320184 A CN 202011320184A CN 112323139 B CN112323139 B CN 112323139B
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
- C30B13/28—Controlling or regulating
- C30B13/30—Stabilisation or shape controlling of the molten zone, e.g. by concentrators, by electromagnetic fields; Controlling the section of the crystal
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B30/00—Production of single crystals or homogeneous polycrystalline material with defined structure characterised by the action of electric or magnetic fields, wave energy or other specific physical conditions
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Abstract
The invention relates to a rotary sound field liquid bridge capillary convection experiment device and a method, wherein the device comprises a bracket device, a liquid bridge generation device, a sound field movement device and an image recognition device; the bracket device comprises an upper liquid bridge bracket and a lower liquid bridge bracket which are arranged up and down; the liquid bridge generating device comprises an upper liquid bridge supporting disc and a lower liquid bridge supporting disc which are arranged up and down; the upper liquid bridge support disc is arranged on the upper liquid bridge support, and the lower liquid bridge support disc is arranged on the lower liquid bridge support; a liquid bridge area is formed between the upper liquid bridge support plate and the lower liquid bridge support plate; the sound field generating device comprises a transducer and an arbitrary waveform generator; the invention has reasonable design, compact structure and convenient use.
Description
Technical Field
The invention relates to the technical field of intersection of fluid physics and material science, in particular to a rotary sound field liquid bridge capillary convection experiment device and method.
Background
The floating zone method is known as a growth method of semiconductor crystal material, and the main principle of the floating zone method is that a material rod is heated by the outside and gradually pulls up a liquid bridge full-floating zone supported between two solid material ends, and the quality of grown crystals is influenced by periodic oscillation capillary convection in the liquid bridge zone, so that micron-level impurity stripes are generated. The semi-floating zone liquid bridge is based on a floating zone method for preparing single crystals, and an ideal physical experimental model is established by researching and inhibiting periodic oscillation capillary convection in the crystal growth process. Based on cavitation and acoustic streaming effect of acoustic-streaming coupling excitation, effective control of solidification in the preparation process of alloy melt and composite material by high-energy power ultrasound can accelerate the heat and mass transfer process of alloy melt, and form uniform temperature field and solute field. Therefore, in theory, the surface morphology of the semiconductor crystal substrate can be greatly improved by introducing the ultrasonic technology into the growth process of the semiconductor crystal floating region.
Currently, the means for suppressing periodic oscillating capillary convection inside a liquid bridge are more mature, including: applied magnetic fields, vibration, surface coating, and shear air flow. The non-contact external physical field is used for the optimal inhibition effect of periodic oscillation capillary convection in the liquid bridge, and the non-contact external physical field crystal growth technology is more beneficial to preparing high-quality semiconductor materials. In the related basic experimental study, the conventional liquid bridge generating device can only perform the non-isothermal liquid bridge experiment with magnetic field, vibration, surface coating and shear airflow, but the basic experimental platform capable of performing the liquid bridge capillary convection experiment for sound field suppression has not yet been developed, so that the development of a technical scheme of the rotary sound field liquid bridge capillary convection experimental device is needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rotary sound field liquid bridge capillary convection experiment device and a method. Therefore, the invention can be used for researching the inhibition effect of the rotating sound field on the periodic oscillation capillary flow in the liquid bridge, provides a necessary basic experiment research device for researching and preparing the high-quality semiconductor crystal, and solves the defect of lack of sound field inhibition of the traditional liquid bridge capillary convection experiment device.
In order to solve the problems, the invention adopts the following technical scheme:
a rotary sound field liquid bridge capillary convection experiment device comprises a bracket device, a liquid bridge generation device, a sound field movement device and an image recognition device;
the bracket device comprises an upper liquid bridge bracket and a lower liquid bridge bracket which are arranged up and down;
the liquid bridge generating device comprises an upper liquid bridge supporting disc and a lower liquid bridge supporting disc which are arranged up and down; the upper liquid bridge support disc is arranged on the upper liquid bridge support, and the lower liquid bridge support disc is arranged on the lower liquid bridge support; a liquid bridge area is formed between the upper liquid bridge support plate and the lower liquid bridge support plate;
the sound field generating device comprises a transducer and an arbitrary waveform generator;
the sound field movement device is positioned below the sound field generation device; the device comprises a rotary ring, a rotary motor in transmission connection with the rotary ring, an alternating current servo controller and a sound field generator bracket; the rotating motor is arranged on the sound field generator bracket, and the alternating current servo controller is connected with the rotating motor; the transducer is fixed on the rotary ring through a clamping groove, and the rotary motor drives the rotary ring and the transducer to rotate around the liquid bridge generating device; the liquid bridge generating device is positioned above the sound field generating device;
the image recognition device comprises a high-speed camera with a micro-focus lens, a diffusion sheet, a background light and an adjustable supporting table; the background light, the diffusion sheet, the liquid bridge area and the high-speed camera are sequentially arranged from left to right;
the high-speed camera of the micro-focus lens is the same as the liquid bridge area in height.
As a further improvement of the above technical scheme:
the lower end of the upper liquid bridge support column is connected with an upper liquid bridge support disc through threads; the upper ends of the lower liquid bridge support columns are connected with a lower liquid bridge support disc through threads, and the upper liquid bridge support columns, the lower liquid bridge support columns and the upper liquid bridge support disc are on the same straight line;
the upper end of the upper liquid bridge support disc is connected with an upper liquid bridge support column through threads, and the upper liquid bridge support column is vertically arranged on the upper liquid bridge support;
the lower end of the lower liquid bridge support disc is connected with a lower liquid bridge support column through threads, and the lower liquid bridge support column is vertically arranged on the lower liquid bridge support;
a liquid injection micropore channel is penetrated among the lower liquid bridge support disc, the lower liquid bridge support column and the lower clamping ring so as to inject an experimental medium into the liquid bridge area; the lower liquid bridge support disc is connected with the lower liquid bridge support through a lower liquid bridge support column;
the upper end of the upper liquid bridge pillar is connected with an upper clamping ring; the lower end of the lower liquid bridge pillar is connected with a lower clamping ring; the upper clamping ring is connected with the upper liquid bridge pin, and the lower clamping ring is connected with the lower liquid bridge pin; the lower end of the lower liquid bridge pillar is connected with a lower clamping ring;
an upper mounting clamping groove is formed at the joint of the upper liquid bridge support and the upper liquid bridge support, and a lower mounting clamping groove is formed at the joint of the lower liquid bridge support and the lower liquid bridge support;
the liquid bridge generating device is connected with the bracket device through the upper liquid bridge pin and the lower liquid bridge pin.
The bracket device also comprises a support beam vertical rail and a lifting stepping motor; the upper liquid bridge support and the lower liquid bridge support are both connected with a supporting beam vertical rail, and a lifting stepping motor positioned on the upper liquid bridge support is connected with the supporting beam vertical rail through threads, so that the upper liquid bridge support moves up and down to obtain the liquid bridge height required by an experiment;
the liquid bridge area is respectively provided with an upper hot corner area thermocouple and a lower cold corner area thermocouple.
As a further improvement of the above technical scheme:
the rotary ring is connected to the sound field generator bracket through a rotary motor so as to adjust the heights of the rotary ring and the transducer;
the arbitrary waveform generator controls the intensity and waveform of the sound field of the transducer;
the alternating current servo controller controls the rotating speed and the rotating angle of the rotating circular ring;
the horizontal plane of the transducer and the rotary ring is lower than the liquid bridge area; each transducer is fixed in the rotary ring at a certain inclination angle, and the convergence intersection point of the axial extension lines of the transducers is positioned in the liquid bridge area.
The image recognition device also comprises a diffusion sheet and a background lamp, wherein the background lamp is positioned at the outer side of the diffusion sheet, the diffusion sheet and the background lamp are fixed on the adjustable supporting table, and the high-speed camera with the micro-focus lens, the diffusion sheet, the background lamp and the liquid bridge area are positioned on the same height straight line;
the device also comprises a main control terminal, wherein the main control terminal is connected with the micro-distance high-speed camera, the main control terminal is also connected with the sound field movement device, and the main control terminal is used for acquiring shooting data of the high-speed camera with the micro-focus lens and controlling the shooting process of the high-speed camera, including focal length, resolution, exposure, image size and color;
the upper liquid bridge support plate and the lower liquid bridge support plate are made of high-temperature-resistant copper or copper alloy materials.
The shell of the device is a closed inner cavity, and a humidifier is also arranged in the closed inner cavity;
a lower top support for supporting the lower liquid bridge support is arranged at the bottom of the device;
a displacement sensor for sensing the descending of the upper liquid bridge support column is arranged in the device;
a reverse cylinder for assisting the lower surface of the upper overhead hydraulic bridge support column is arranged in the device, and clearance errors during reverse movement are eliminated; the upper end of the reversing cylinder is provided with a buffer spring for abutting against the lower surface of the upper liquid bridge support column; an auxiliary tray controlled by a manipulator to move is arranged in the device, and the lower end of the reversing cylinder and the displacement sensor are arranged on the upper surface of the auxiliary tray;
a rotating motor is arranged on the upper liquid bridge support column, the root of a counterweight swing arm is connected with a main shaft upper key of the rotating motor, the rotating motor drives the counterweight swing arm to swing, and the counterweight swing arm rotates to generate vibration so as to eliminate bubbles accumulated in the liquid bridge and/or monitor the influence of the vibration on the liquid bridge;
a hinge joint is arranged between the upper liquid bridge support disc and the upper liquid bridge support column so as to ensure that the lower surface of the upper liquid bridge support disc is attached to the upper surface of the lower liquid bridge support disc;
a pressure sensor is arranged between the lower liquid bridge support disc and the lower liquid bridge support column to detect the lower pressure of the upper liquid bridge support disc.
A polishing double-arm manipulator is arranged on one side of the upper liquid bridge supporting disc and is respectively connected with a polishing head, a coloring brush and a diamond pen;
the coloring hairbrush is used for dipping the coloring agent and smearing the coloring agent on the lower surface of the upper liquid bridge support disc, the lower surface of the upper liquid bridge support disc dipped with the coloring agent and the lower surface of the upper liquid bridge support disc are subjected to grinding, and the grinding head is used for grinding according to the grinding conditions; the diamond pen trims the grinding head.
A primary abrasive grain collecting part is arranged on one side of the upper liquid bridge supporting plate, a primary abrasive grain matched grinding rotating shaft is vertically arranged in the primary abrasive grain collecting part, a primary abrasive grain feeding auger is obliquely arranged in the primary abrasive grain collecting part, and a primary abrasive grain matched grinding disc is arranged above the primary abrasive grain collecting part;
the upper output end of the primary abrasive particle feeding auger is provided with an input end of a primary abrasive particle flow guide channel, and the lower end of the primary abrasive particle flow guide channel is positioned above the other part of the primary abrasive particle match grinding disc;
a part of the primary abrasive grain matched grinding disc rotates to contact with the lower surface of the upper liquid bridge supporting disc, and the abrasive grains on the upper liquid bridge supporting disc drop into a primary abrasive grain collecting part to be collected; the primary abrasive particle feeding auger ascends and collects abrasive particles in the primary abrasive particle collecting part and sends the abrasive particles to the primary abrasive particle matched grinding disc along the primary abrasive particle guide channel to continue serving as abrasive particles;
a secondary abrasive grain fixing frame is arranged on the upper liquid bridge support column, and a secondary abrasive grain outer sheath sleeved on the upper liquid bridge support disc and provided with a secondary abrasive grain inlet is connected below the secondary abrasive grain fixing frame through a secondary abrasive grain return spring;
the lower end of the secondary abrasive particle fixing frame is provided with a secondary abrasive particle pressing C-shaped hand for pressing the secondary abrasive particle outer sheath;
a secondary abrasive particle grid plate is arranged on the secondary abrasive particle outer sheath and is used for being inserted into the secondary abrasive particle outer sheath;
a secondary abrasive particle blanking notch is arranged on the lower liquid bridge support disc, and the secondary abrasive particle blanking notch corresponds to the secondary abrasive particle storage part;
the secondary abrasive particles press down the C-shaped hand to press down the secondary abrasive particle outer sheath, so that the secondary abrasive particle outer sheath is sleeved between the upper liquid bridge support disc and the lower liquid bridge support disc, and the secondary abrasive particles fall into the secondary abrasive particle storage part through the secondary abrasive particle blanking notch.
A capillary convection experiment method of a liquid bridge of a rotary sound field comprises the following steps of; step one, establishing a liquid bridge:
adjusting a stepping motor to enable an upper liquid bridge support column to move up and down to obtain the liquid bridge height required by experiments, then injecting an experiment medium between an upper liquid bridge support disc and a lower liquid bridge support disc through a lower disc liquid injection micropore channel to form a liquid bridge, and enabling a static liquid bridge to maintain an interface shape through surface tension;
step two, establishing a temperature difference, and measuring the temperature of the corner region:
heating an experimental medium by using a physical method, and detecting the temperature of an upper liquid bridge support disc and a lower liquid bridge support disc through an upper hot corner thermocouple and a lower cold corner thermocouple respectively;
step three, adjusting the position and shooting state of the sound field generating device:
adjusting the sound field generator support to a fixed height and adjusting the transducer to a fixed angle.
As a further improvement of the above technical scheme:
monitoring the change of the vibration and heat capillary convection in the liquid bridge in real time, wherein the macro high-speed camera transmits the collected video data of the vibration and heat capillary convection in the liquid bridge to the main control terminal;
step four, sound field adjustment, output data:
firstly, a main control terminal performs motion control and sound field intensity control on a rotary ring and a transducer, the rotary ring drives the transducer to rotate, and then digital signals fed back to the main control terminal through a macro high-speed camera perform motion control on the rotary ring and the transducer; then, the inhibition effect of the rotating sound field on the periodic oscillation capillary flow in the liquid bridge can be studied by combining the liquid bridge internal oscillation capillary convection video data shot by the macro high-speed camera.
The capillary convection experiment method of the liquid bridge of the rotating sound field, in the experimental process or before the experiment, also include carrying out the step of coping;
firstly, dipping a coloring agent by a coloring brush and smearing the coloring agent on the lower surface of an upper liquid bridge support plate, wherein the lower surface of the upper liquid bridge support plate dipped with the coloring agent and the lower surface of the upper liquid bridge support plate are subjected to grinding, and a grinding head is used for grinding according to the grinding condition; then, the diamond pen trims the grinding head;
step B, firstly, a part of the primary abrasive grain matched grinding disc rotates to be in contact with the lower surface of the upper liquid bridge support disc, and the abrasive grains on the upper liquid bridge support disc fall into a primary abrasive grain collecting part to be collected; then, the primary abrasive particle feeding auger ascends and collects abrasive particles in the primary abrasive particle collecting part and sends the abrasive particles to the primary abrasive particle matched grinding disc along the primary abrasive particle guide channel to continue serving as abrasive particles;
and C, pressing down the secondary abrasive particles by a C-shaped hand to press down the secondary abrasive particle outer sheath, so that the secondary abrasive particles are sleeved between the upper liquid bridge support disc and the lower liquid bridge support disc, and fall into the secondary abrasive particle storage part through the secondary abrasive particle blanking notch.
The invention has reasonable design, low cost, firmness, durability, safety, reliability, simple operation, time and labor saving, fund saving, compact structure and convenient use. The embodiment of the invention has the following advantages: compared with the traditional liquid bridge capillary convection experimental device, the device has the advantages that the structure is simple, the frequency and the intensity of a sound field can be adjusted through the sound field generating device, and the effects on periodic oscillation capillary convection and trace particles are realized; the sound field distribution can be regulated by the sound field movement device, so that clockwise or anticlockwise rotation of the sound field is realized. On one hand, the invention realizes the liquid bridge capillary convection experiment device with the sound field generation function; on the other hand, the defect of a static sound field in the experimental research of liquid bridge capillary convection is effectively overcome, the influence of a dynamic rotating sound field on periodic oscillation capillary convection flow is ensured, the inhibition effect of the sound field on periodic oscillation capillary convection in the crystal growth is effectively researched, the experimental difficulty is reduced, the control of the sound field on melt flow in the crystal growth process is comprehensively considered, and compared with the data obtained by the traditional liquid bridge generator, the method is more comprehensive, stable and reliable and has important significance in researching the crystal growth process in a floating zone.
Drawings
Fig. 1 is a schematic structural diagram of a rotary sound field liquid bridge capillary convection experiment device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a liquid bridge generating device according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a sound field generating device according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a sound field moving apparatus.
Fig. 5 is a schematic structural diagram of a bracket device according to an embodiment of the present invention.
Fig. 6 is a diagram of sound field suppression internal flow conditions provided in an embodiment of the present invention.
Fig. 7 is a schematic structural view of a modification of the present invention.
Wherein: 1. a bracket device; 2. a liquid bridge generating device; 3. a sound field generating device; 4. a sound field movement device; 5. an image recognition device; 6. a liquid bridge bracket is arranged; 7. a lower liquid bridge bracket; 8. a liquid bridge supporting plate is arranged on the upper part; 9. a lower liquid bridge support plate; 10. a liquid bridge region; 11. a transducer; 12. rotating the circular ring; 13. a high speed camera with a micro focus lens; 14. a liquid bridge pillar is arranged; 15. a lower liquid bridge pillar; 16. a clamping ring is arranged; 17. a liquid bridge pin is arranged; 18. a lower snap ring; 19. a lower liquid bridge pin; 20. a lower disc liquid injection micropore channel; 21. a clamping groove is arranged on the upper part; 22. a lower mounting clamping groove; 23. a support beam vertical rail; 24. a micro stepping motor; 25. a thermocouple in an upper hot corner area; 26. a lower cold corner thermocouple; 27. a sound field generator support; 28. a diffusion sheet; 29. a backlight; 30. an adjustable support table; 31. a master control terminal; 32. an arbitrary waveform generator; 33. a rotating electric machine; 34. an ac servo controller. 126. A humidifier; 127. repairing and grinding the double-arm manipulator; 128. polishing head; 129. coloring brushes; 130. diamond pen; 131. a lower top support; 132. a displacement sensor; 133. a reverse cylinder; 134. a buffer spring; 36. an auxiliary tray; 37. a hinge joint; 38. a rotating electric machine; 39. a counterweight swing arm; 40. a pressure sensor; 41. primary abrasive grain matched grinding rotating shaft; 42. a primary abrasive grain is matched with a grinding disc; 43. a primary abrasive particle collection unit; 44. a primary abrasive particle feeding auger; 45. a primary abrasive grain flow guide channel; 46. a secondary abrasive particle fixing frame; 47. a secondary abrasive grain return spring; 48. pressing down the C-shaped hand by the secondary abrasive particles; 49. a secondary abrasive particle outer sheath; 50. a secondary abrasive particle inlet; 51. secondary abrasive grains; 52. a secondary abrasive particle blanking notch; 53. and a secondary abrasive particle storage part.
Detailed Description
Referring to fig. 1-7, the present embodiment provides a rotary sound field liquid bridge capillary convection experiment device and method, including a bracket device 1, a liquid bridge generating device 2, a sound field generating device 3, a sound field moving device 4 and an image recognition device 5;
the bracket device 1 comprises an upper liquid bridge bracket 6 and a lower liquid bridge bracket 7;
the liquid bridge generating device 2 is connected with the bracket device 1 through an upper liquid bridge bracket 6 and a lower liquid bridge bracket 7, the liquid bridge generating device 2 comprises an upper liquid bridge support disc 8 and a lower liquid bridge support disc 9, and a liquid bridge area 10 is formed between the upper liquid bridge support disc 8 and the lower liquid bridge support disc 9;
the sound field generating device 3 includes a transducer 11 and an arbitrary waveform generator 32;
the sound field movement device 4 comprises a rotary circular ring 12, a rotary motor 33 and an alternating current servo controller 34, the transducer 11 is fixed inside the rotary circular ring 12, and the alternating current servo controller 34 controls the rotary motor 33 to drive the transducer 11 and the rotary circular ring 12 to rotate around the liquid bridge generation device 2;
the image recognition device 5 comprises a high-speed camera 13 with a micro-focus lens, the high-speed camera 13 with a micro-focus lens being at the same height as the liquid bridge area 10.
In one embodiment of the rotating acoustic field liquid bridge capillary convection assay device,
the upper end of the upper liquid bridge support disc 8 is connected with an upper liquid bridge support column 14 through threads, the upper liquid bridge support column 14 is perpendicular to the upper liquid bridge support 6, and the upper liquid bridge support disc 8 is connected with the upper liquid bridge support 6 through the upper liquid bridge support column 14. The lower end of the lower liquid bridge support disc 9 is connected with a lower liquid bridge support 15 through threads, and the lower liquid bridge support 15 is perpendicular to the lower liquid bridge support 7.
The lower liquid bridge support disc 9 is connected with the lower liquid bridge bracket 7 through a lower liquid bridge support 15. The upper end of the upper liquid bridge strut 14 is connected with an upper clamping ring 16, and the upper end of the upper clamping ring 16 is connected with an upper liquid bridge pin 17; the lower end of the lower liquid bridge pillar 15 is connected with a lower clamping ring 18, and the lower end of the lower clamping ring 18 is connected with a lower liquid bridge pin 19.
The upper liquid bridge pin 17 and the lower liquid bridge pin 19 realize the assembly of the liquid bridge generating device 2 and the bracket device 1. A lower disc liquid injection micropore channel 20 is formed among the lower liquid bridge support disc 9, the lower liquid bridge support column 15 and the lower clamping ring 18, and the lower disc liquid injection micropore channel 20 accurately injects experimental media (10 cSt silicone oil and aluminum powder) between the upper liquid bridge support disc 8 and the lower liquid bridge support disc 9.
An upper mounting clamping groove 21 is formed at the joint of the upper liquid bridge support 6 and the upper liquid bridge support column 14, and a lower mounting clamping groove 22 is formed at the joint of the lower liquid bridge support 7 and the lower liquid bridge support column 15. The upper mounting clamping groove 21 realizes the assembly of the upper liquid bridge pin 17 and the bracket device 1, and the lower mounting clamping groove 22 realizes the assembly of the lower liquid bridge pin 19 and the bracket device 1.
In one embodiment of the rotary sound field liquid bridge capillary convection experiment device, the bracket device 1 further comprises a supporting beam vertical rail 23 and a stepping motor 24, wherein the supporting beam vertical rail 23 is connected with the upper liquid bridge bracket 6 and the lower liquid bridge bracket 7, and the stepping motor 24 is connected with one side of the supporting beam vertical rail 23 through threads. The step motor 24 is pulled to move the upper liquid bridge column 14 up and down to obtain the liquid bridge height required for the experiment.
In one embodiment of the rotary acoustic field liquid bridge capillary convection assay device, the liquid bridge zone 10 between the upper liquid bridge support disk 8 and the lower liquid bridge support disk 9 is provided with an upper hot corner zone thermocouple 25 and a lower cold corner zone thermocouple 26. The upper liquid bridge support disc 8 is subjected to temperature detection through an upper hot corner thermocouple 25, and the lower liquid bridge support disc 9 is subjected to temperature detection through a lower cold corner thermocouple 26.
In one embodiment of the rotary acoustic field liquid bridge capillary convection assay device, the rotary ring 12 is coupled to the acoustic field generator mount 27 by a rotary motor 33. The sound field generator support 27 plays a supporting role on the rotary ring 12, and the heights of the rotary ring 12 and the transducer 11 are adjusted by the sound field generator support 27; the rotating motor 33 is controlled by an ac servo controller 34 to thereby adjust the rotation angle and speed of the rotating ring 12 and the transducer 11. The arbitrary waveform generator 32 adjusts the sound field intensity and waveform of the transducer 11.
In one embodiment of the rotary sound field liquid bridge capillary convection experimental device, the image recognition device 5 further comprises a diffusion sheet 28 and a background light 29, an adjustable supporting table 30 is connected to the lower ends of the diffusion sheet 28 and the background light 29, the background light 29 is located on the outer side of the diffusion sheet 28, and the height of the high-speed camera 13 with micro focus lens, the diffusion sheet 28 and the background light 29 is the same as the height of the liquid bridge area 10. The diffusion sheet 28 and the backlight 29 are designed to enable the high-speed camera 13 with micro-focus lens to monitor the change of the oscillation heat capillary convection inside the liquid bridge more clearly.
In one embodiment of the rotary sound field liquid bridge capillary convection experimental device, the device further comprises a main control terminal 31, wherein the main control terminal 31 is connected with the micro-distance high-speed camera 13, and the main control terminal 31 is used for controlling the shooting process (focal length, resolution, exposure, image size and color) of the high-speed camera to acquire shooting data of the high-speed camera 13 with a micro-focus lens.
In one embodiment of the rotary sound field liquid bridge capillary convection experiment device, the upper liquid bridge support disc 8 and the lower liquid bridge support disc 9 are made of high-temperature-resistant copper or copper alloy materials. The upper liquid bridge support disc 8 and the lower liquid bridge support disc 9 are made of copper or copper alloy materials with good heat conduction performance and high temperature resistance, so that a liquid bridge can be smoothly generated.
Specifically, the model 13 of the high-speed micro camera is fastcammoniax (black and white ISO 40000/color ISO16000, 4000 frames/sec at 1024×1024 pixels, 12500 frames/sec at 640×480 pixels); the model number of the transducer 11 is as follows: the magnetostrictive transducer consists of elements such as nickel magnetostrictive material, magnetic induction coil, vibration transmission rod, amplitude transformer and the like; the rotating electrical machine 33 is: Y200L1-2 (power 30Kw, rated current 57A, rated rotational speed 2950 rpm); the arbitrary waveform generator 32 is of the type: tektronix AFG3102, sine wave 100MHz, pulse 50MHz, sampling rate 1GS/s, amplitude 10Vp-p; the ac servo controller 34 is of the type: the speed frequency response is <400Hz, the speed regulation ratio is 1:5000, the speed fluctuation rate is <0.3 (load is 0% -100%), the pulse frequency is 500KHZ, the editor feeds back 2500p/r (15-line increment/differential output), the power range is 7.5KW, one-way or three AC220V input power sources, the RS-232 or RS-485 communication mode, the control mode is [ 1 ] the position control (external pulse input or internal position command), 2. The speed control, 3. The position/speed control limit (+/-180 °); the micro stepping motor 24 is of the type SL42STH40-1684A-300 (rated power 4.7W, rated voltage 2.8V, rated current 1.68A, rated torque 0.4 NM).
Referring to fig. 5 and 6, during the test of the rotary acoustic field liquid bridge capillary convection experimental apparatus:
(1) Establishing a liquid bridge:
first, the stepper motor 24 is adjusted to move the upper liquid bridge column 14 up and down to obtain the liquid bridge height required for the experiment, then the experimental medium (10 cSt silicone oil + aluminum powder) is accurately injected between the upper liquid bridge support disc 8 and the lower liquid bridge support disc 9 through the lower disc liquid injection microporous channel 20, so as to form a liquid bridge, and the stationary liquid bridge maintains the interface shape through surface tension.
(2) Establishing a temperature difference, and measuring the temperature of an angle area:
then, the experimental medium was heated using a physical method while the upper and lower liquid bridge support trays 8 and 9 were temperature-detected by the upper and lower hot- corner thermocouples 25 and 26, respectively.
(3) Adjusting the position and shooting state of the sound field generating device:
next, the sound field generator mount 27 is adjusted to a fixed height and the transducer 11 is adjusted to a fixed angle. The background light 29 and the macro high-speed camera 13 are turned on, and the change of the oscillation capillary convection in the liquid bridge is monitored in real time, wherein the macro high-speed camera 13 transmits the collected video data of the oscillation capillary convection in the liquid bridge to the main control terminal 31.
(4) Sound field adjustment, output data:
then, the main control terminal 31 performs motion control and sound field intensity control on the rotary ring 12 and the transducer 11, and the rotary ring 12 drives the transducer 11 to rotate, and then performs motion control on the rotary ring 12 and the transducer 11 through digital signals fed back to the main control terminal 31 by the macro high-speed camera 13. Through a series of actions and sound field intensity control, the inhibition effect of the rotating sound field on the periodic oscillation capillary flow in the liquid bridge can be studied by combining the liquid bridge internal oscillation capillary convection video data shot by the macro high-speed camera 13.
As shown in fig. 1, the rotary sound field liquid bridge capillary convection experimental device of the embodiment comprises a bracket device 1, a liquid bridge generating device 2, a sound field generating device 3, a sound field moving device 4 and an image recognition device 5;
the bracket device 1 comprises an upper liquid bridge bracket 6 and a lower liquid bridge bracket 7 which are arranged up and down;
the liquid bridge generating device 2 comprises an upper liquid bridge supporting disc 8 and a lower liquid bridge supporting disc 9 which are arranged up and down; the upper liquid bridge support disc 8 is arranged on the upper liquid bridge bracket 6, and the lower liquid bridge support disc 9 is arranged on the lower liquid bridge bracket 7; a liquid bridge area 10 is formed between the upper liquid bridge support disc 8 and the lower liquid bridge support disc 9;
the sound field generating device 3 includes a transducer 11 and an arbitrary waveform generator 32;
the sound field movement device 4 is positioned below the sound field generation device 3; comprises a rotary circular ring 12, a rotary motor 33 in transmission connection with the rotary circular ring 12, an alternating current servo controller 34 and a sound field generator bracket 27; the rotating motor 33 is arranged on the sound field generator bracket 27, and the alternating current servo controller 34 is connected with the rotating motor 33; the transducer 11 is fixed on the rotary ring 12 through a clamping groove, and the rotary motor 33 drives the rotary ring 12 and the transducer 11 to rotate around the liquid bridge generating device 2; the liquid bridge generating device 2 is positioned above the sound field generating device 3;
the image recognition device 5 comprises a high-speed camera 13 with a micro-focus lens, a diffusion sheet 28, a background light 29 and an adjustable supporting table 30; the background light 29, the diffusion sheet 28, the liquid bridge area 10 and the high-speed camera 13 are sequentially arranged from left to right;
the high-speed camera 13 of the micro-focus lens is the same as the liquid bridge area 10 in height.
The lower end of the upper liquid bridge support column 14 is connected with the upper liquid bridge support disc 8 through threads; the upper ends of the lower liquid bridge support columns 15 are connected with the lower liquid bridge support disc 9 through threads, and the upper liquid bridge support columns 14, the lower liquid bridge support columns 15, the upper liquid bridge support disc 8 and the lower liquid bridge support disc 9 are on the same straight line;
the upper end of the upper liquid bridge support disc 8 is connected with an upper liquid bridge support column 14 through threads, and the upper liquid bridge support column 14 is vertically arranged on the upper liquid bridge support 6;
the lower end of the lower liquid bridge support disc 9 is connected with a lower liquid bridge support 15 through threads, and the lower liquid bridge support 15 is vertically arranged on the lower liquid bridge bracket 7;
a liquid injection micropore channel 20 is penetrated among the lower liquid bridge support disc 9, the lower liquid bridge support column 15 and the lower clamping ring 18 so as to inject experimental media into the liquid bridge area 10; the lower liquid bridge support disc 9 is connected with the lower liquid bridge support 7 through a lower liquid bridge support 15;
the upper end of the upper liquid bridge strut 14 is connected with an upper clamping ring 16; the lower end of the lower liquid bridge pillar 15 is connected with a lower clamping ring 18; the upper clamping ring 16 is connected with the upper liquid bridge pin 17, and the lower clamping ring 18 is connected with the lower liquid bridge pin 19; the lower end of the lower liquid bridge pillar 15 is connected with a lower clamping ring 18;
an upper mounting clamping groove 21 is formed at the joint of the upper liquid bridge support 14 and the upper liquid bridge support 6, and a lower mounting clamping groove 22 is formed at the joint of the lower liquid bridge support 15 and the lower liquid bridge support 7;
the liquid bridge generating device 2 is assembled with the bracket device 1 through an upper liquid bridge pin 17 and a lower liquid bridge pin 19.
The bracket device 1 also comprises a supporting beam vertical rail 23 and a lifting stepping motor 24; the upper liquid bridge support 6 and the lower liquid bridge support 7 are both connected with a supporting beam vertical rail 23, and a lifting stepping motor 24 positioned on the upper liquid bridge support 6 is connected with the supporting beam vertical rail 23 through threads so as to enable the upper liquid bridge support 14 to move up and down to obtain the liquid bridge height required by an experiment;
the liquid bridge zone 10 is provided with an upper hot corner zone thermocouple 25 and a lower cold corner zone thermocouple 26, respectively.
The rotary ring 12 is connected to the sound field generator support 27 through a rotary motor 33 to adjust the heights of the rotary ring 12 and the transducer 11;
the arbitrary waveform generator 27 controls the sound field intensity and waveform of the transducer 11;
the ac servo controller 34 controls the rotational speed and angle of the rotating ring 12;
the level of the transducer 11 and the rotary ring 12 is lower than the liquid bridge area 10; each transducer 11 is fixed inside the rotary ring 12 at a certain inclination angle and the convergence intersection point of the axial extension lines of the transducers 11 is located in the liquid bridge area 10.
The image recognition device 5 further comprises a diffusion sheet 28 and a background light 29, wherein the background light 29 is positioned on the outer side of the diffusion sheet 28, the diffusion sheet 28 and the background light 29 are fixed on an adjustable supporting table 30, and the high-speed camera 13 with the micro-focus lens, the diffusion sheet 28, the background light 29 and the liquid bridge area 10 are positioned on the same height straight line;
the device further comprises a main control terminal 31, wherein the main control terminal 31 is connected with the micro-distance high-speed camera 13, the main control terminal 31 is also connected with the sound field movement device 4, and the main control terminal 31 is used for acquiring shooting data of the high-speed camera 13 with a micro-focus lens and controlling the shooting process of the high-speed camera, including focal length, resolution, exposure, image size and color;
the upper liquid bridge support disc 8 and the lower liquid bridge support disc 9 are made of high-temperature-resistant copper or copper alloy materials.
The shell of the device is a closed inner cavity, and a humidifier 126 is also arranged in the closed inner cavity;
a lower top support 131 for supporting the lower liquid bridge column 15 is arranged at the bottom of the device;
a displacement sensor 132 for sensing the descending of the upper liquid bridge column 14 is arranged in the device;
a reverse cylinder 133 for assisting the lower surface of the upper-top liquid bridge column 14 is arranged in the device, and clearance errors in reverse movement are eliminated; a buffer spring 134 for abutting against the upper liquid bridge column 14 is provided at the upper end of the reversing cylinder 133; an auxiliary tray 36 which is controlled to move by a manipulator is arranged in the device, and the lower end of a reversing cylinder 133 and a displacement sensor 132 are arranged on the upper surface of the auxiliary tray 36;
a rotating motor 38 is arranged on the upper liquid bridge support column 14, the root of a counterweight swing arm 39 is connected with a main shaft of the rotating motor 38 in a key way, the rotating motor 38 drives the counterweight swing arm 39 to swing, and the counterweight swing arm 39 rotates to generate vibration so as to eliminate bubbles stored in the liquid bridge and/or monitor the influence of the vibration on the liquid bridge;
a hinge joint 37 is arranged between the upper liquid bridge support disc 8 and the upper liquid bridge support column 14 so as to ensure that the lower surface of the upper liquid bridge support disc 8 is attached to the upper surface of the lower liquid bridge support disc 9;
a pressure sensor 40 is provided between the lower liquid bridge support tray 9 and the lower liquid bridge column 15 to detect the downward pressure of the upper liquid bridge support tray 8.
A polishing double-arm manipulator 127 is arranged on one side of the upper liquid bridge support disc 8, and the polishing double-arm manipulator 127 is respectively connected with a polishing head 128, a coloring brush 129 and a diamond pen 130;
the coloring brush 129 is used for dipping the coloring agent and smearing the coloring agent on the lower surface of the upper liquid bridge support disc 8, wherein the lower surface of the upper liquid bridge support disc 8 dipped with the coloring agent and the lower surface of the upper liquid bridge support disc 8 are subjected to grinding, and the grinding head 128 is used for grinding according to the grinding conditions; diamond pen 130 trims the grinding bit 128.
A primary abrasive grain collecting part 43 is arranged on one side of the upper liquid bridge support plate 8, a primary abrasive grain matched grinding rotating shaft 41 is vertically arranged in the primary abrasive grain collecting part 43, a primary abrasive grain feeding auger 44 is obliquely arranged in the primary abrasive grain collecting part 43, and a primary abrasive grain matched grinding disc 42 is arranged above the primary abrasive grain collecting part 43;
an input end of a primary abrasive particle guide channel 45 is arranged at the upper output end of the primary abrasive particle feeding auger 44, and the lower end of the primary abrasive particle guide channel 45 is positioned above the other part of the primary abrasive particle matched grinding disc 42;
a part of the primary abrasive grain matched grinding disc 42 rotates to be in contact with the lower surface of the upper liquid bridge support disc 8, and the abrasive grains on the upper liquid bridge support disc fall into the primary abrasive grain collecting part 43 to be collected; the primary abrasive particle feeding auger 44 ascends and collects the abrasive particles in the primary abrasive particle collecting part 43 and sends the abrasive particles to the primary abrasive particle matched grinding disc 42 along the primary abrasive particle guide channel 45 to continue to serve as abrasive particles;
a secondary abrasive particle fixing frame 46 is arranged on the upper liquid bridge support column 14, and a secondary abrasive particle outer sheath 49 sleeved on the upper liquid bridge support disc 8 and provided with a secondary abrasive particle inlet 50 is connected below the secondary abrasive particle fixing frame 46 through a secondary abrasive particle return spring 47;
a secondary abrasive grain pressing C-shaped hand 48 is arranged at the lower end of the secondary abrasive grain fixing frame 46 and is used for pressing a secondary abrasive grain outer sheath 49;
a secondary abrasive grain grid plate 51 is provided on the secondary abrasive grain outer sheath 49 for insertion into the secondary abrasive grain outer sheath 49;
a secondary abrasive particle blanking notch 52 is arranged on the lower liquid bridge support disc 9, and a secondary abrasive particle storage part 53 is correspondingly arranged on the secondary abrasive particle blanking notch 52;
the secondary abrasive grain pressing C-shaped hand 48 presses the secondary abrasive grain outer sheath 49 so that it is sleeved between the upper liquid bridge support disc 8 and the lower liquid bridge support disc 9, and the secondary abrasive grains fall into the secondary abrasive grain storage part 53 through the secondary abrasive grain blanking notch 52.
The rotary sound field liquid bridge capillary convection experimental method of the embodiment further comprises a polishing step in the experimental process or before the experimental process;
step A, firstly, a coloring hairbrush 129 dips in a coloring agent and smears the coloring agent on the lower surface of an upper liquid bridge support disc 8, the lower surface of the upper liquid bridge support disc 8 dipped in the coloring agent and the lower surface of the upper liquid bridge support disc 8 are ground, a grinding head 128 grinds according to the grinding conditions; then, the diamond pen 130 trims the grinding bit 128;
step B, firstly, a part of the primary abrasive grain matched grinding disc 42 rotates to be in contact with the lower surface of the upper liquid bridge support disc 8, and the abrasive grains on the upper liquid bridge support disc fall into the primary abrasive grain collecting part 43 to be collected; then, the primary abrasive particle feeding auger 44 ascends and collects the abrasive particles in the primary abrasive particle collecting part 43 and sends the abrasive particles to the primary abrasive particle distribution grinding disc 42 along the primary abrasive particle guide channel 45 to continue to serve as abrasive particles;
and step C, the secondary abrasive particle pressing C-shaped hand 48 presses the secondary abrasive particle outer sheath 49 downwards so that the secondary abrasive particle outer sheath is sleeved between the upper liquid bridge support disc 8 and the lower liquid bridge support disc 9, and the secondary abrasive particles fall into the secondary abrasive particle storage part 53 through the secondary abrasive particle blanking notch 52.
When the pressure test is performed in a closed environment, the humidifier 126 can increase humidity and reduce liquid evaporation amount, the disc surface at the joint is required to be overhauled in the process or before an experiment to ensure that the planeness and parallelism of the joint surface meet the set requirements, flexible control is realized through the polishing double-arm manipulator 127, polishing high points are realized through the polishing head 128, the polishing brush 129 can remove abrasive materials or color, the diamond pen 130 can be polished, the lower top support 131 realizes auxiliary support, the displacement sensor 132 realizes closed control, the counter cylinder 133 realizes clearance removal, the precision is improved, the buffer spring 134 realizes buffer control, the auxiliary tray 36 realizes matched support, the hinge joint 37 realizes flexible press fit guide compared with direct press-down, the joint surface is better, the rotating motor 38 and the counterweight swing arm 39 realize air bubble elimination in a liquid bridge, the pressure sensor 40 realize pressure control, primary abrasive particles and secondary abrasive particles are matched, revolution and polishing are realized, high precision, shape position and precision of the abrasive particles are ensured, high-efficiency and precision polishing are realized, and the rotation of the prior art is not fully described.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; it is obvious to a person skilled in the art to combine several embodiments of the invention. Such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a rotatory sound field liquid bridge capillary convection experiment device which characterized in that: comprises a bracket device (1), a liquid bridge generating device (2), a sound field generating device (3), a sound field moving device (4) and an image identifying device (5);
the bracket device (1) comprises an upper liquid bridge bracket (6) and a lower liquid bridge bracket (7) which are arranged up and down;
the liquid bridge generating device (2) comprises an upper liquid bridge supporting disc (8) and a lower liquid bridge supporting disc (9) which are arranged up and down; the upper liquid bridge support disc (8) is arranged on the upper liquid bridge support (6), and the lower liquid bridge support disc (9) is arranged on the lower liquid bridge support (7); a liquid bridge area (10) is formed between the upper liquid bridge support disc (8) and the lower liquid bridge support disc (9);
the sound field generating device (3) comprises a transducer (11) and an arbitrary waveform generator (32);
the sound field movement device (4) is positioned below the sound field generation device (3); comprises a rotary ring (12), a first rotary motor (33) in transmission connection with the rotary ring (12), an alternating current servo controller (34) and a sound field generator bracket (27); the first rotating motor (33) is arranged on the sound field generator bracket (27), and the alternating current servo controller (34) is connected with the first rotating motor (33); the transducer (11) is fixed on the rotary ring (12) through a clamping groove, and the first rotary motor (33) drives the rotary ring (12) and the transducer (11) to rotate around the liquid bridge generating device (2); the liquid bridge generating device (2) is positioned above the sound field generating device (3);
the image recognition device (5) comprises a high-speed camera (13) with a micro-focus lens, a diffusion sheet (28), a background light (29) and an adjustable supporting table (30); the background light (29), the diffusion sheet (28), the liquid bridge area (10) and the high-speed camera (13) are sequentially arranged from left to right;
the height of the high-speed camera (13) of the micro-focus lens is the same as that of the liquid bridge area (10);
the horizontal plane of the transducer (11) and the rotary ring (12) is lower than the liquid bridge area (10); each transducer (11) is fixed in the rotary ring (12) at a certain inclination angle, and the convergence intersection point of the axial extension lines of the transducers (11) is positioned in the liquid bridge area (10).
2. The rotary acoustic field liquid bridge capillary convection experiment device of claim 1, wherein: the lower end of the upper liquid bridge support column (14) is connected with an upper liquid bridge support disc (8) through threads; the upper end of the lower liquid bridge support column (15) is connected with a lower liquid bridge support disc (9) through threads, the upper liquid bridge support column (14), the lower liquid bridge support column (15), the upper liquid bridge support disc (8) and the lower liquid bridge support disc (9) are on the same straight line;
the upper end of the upper liquid bridge support disc (8) is connected with an upper liquid bridge support column (14) through threads, and the upper liquid bridge support column (14) is vertically arranged on the upper liquid bridge support (6);
the lower end of the lower liquid bridge support disc (9) is connected with a lower liquid bridge support column (15) through threads, and the lower liquid bridge support column (15) is vertically arranged on the lower liquid bridge support (7);
a liquid injection micropore channel (20) is penetrated among the lower liquid bridge support disc (9), the lower liquid bridge support column (15) and the lower clamping ring (18) so as to inject experimental media into the liquid bridge area (10); the lower liquid bridge support disc (9) is connected with the lower liquid bridge bracket (7) through a lower liquid bridge support column (15);
the upper end of the upper liquid bridge strut (14) is connected with an upper clamping ring (16); the lower end of the lower liquid bridge pillar (15) is connected with a lower clamping ring (18); the upper clamping ring (16) is connected with the upper liquid bridge pin (17), and the lower clamping ring (18) is connected with the lower liquid bridge pin (19);
an upper mounting clamping groove (21) is formed at the joint of the upper liquid bridge support (14) and the upper liquid bridge support (6), and a lower mounting clamping groove (22) is formed at the joint of the lower liquid bridge support (7) and the lower liquid bridge support (15);
the liquid bridge generating device (2) is assembled with the bracket device (1) through an upper liquid bridge pin (17) and a lower liquid bridge pin (19).
3. The rotary sound field liquid bridge capillary convection experiment device according to claim 2, wherein the bracket device (1) further comprises a support beam vertical rail (23) and a lifting stepping motor (24); the upper liquid bridge support (6) and the lower liquid bridge support (7) are both connected with a supporting beam vertical rail (23), and a lifting stepping motor (24) positioned on the upper liquid bridge support (6) is connected with the supporting beam vertical rail (23) through threads, so that the upper liquid bridge support (14) moves up and down to obtain the liquid bridge height required by an experiment;
the liquid bridge zone (10) is respectively provided with an upper hot corner zone thermocouple (25) and a lower cold corner zone thermocouple (26).
4. The rotary acoustic field liquid bridge capillary convection experiment device of claim 1, wherein: the rotary ring (12) is connected to the sound field generator bracket (27) through a first rotary motor (33) so as to adjust the heights of the rotary ring (12) and the transducer (11);
an arbitrary waveform generator (32) controls the sound field intensity and waveform of the transducer (11);
an ac servo controller (34) controls the rotational speed and angle of the rotating ring (12).
5. The rotary acoustic field liquid bridge capillary convection experiment device of claim 1, wherein: the image recognition device (5) further comprises a diffusion sheet (28) and a background light (29), the background light (29) is positioned on the outer side of the diffusion sheet (28), the diffusion sheet (28) and the background light (29) are fixed on an adjustable supporting table (30), and the high-speed camera (13) with the micro-focus lens, the diffusion sheet (28), the background light (29) and the liquid bridge area (10) are positioned on the same height straight line;
the device further comprises a main control terminal (31), wherein the main control terminal (31) is connected with the micro-distance high-speed camera (13), the main control terminal (31) is further connected with the sound field movement device (4), the main control terminal (31) is used for acquiring shooting data of the high-speed camera (13) with the micro-focus lens, and the shooting process of the high-speed camera is controlled, wherein the shooting process comprises focal length, resolution, exposure, image size and color;
the upper liquid bridge support disc (8) and the lower liquid bridge support disc (9) are made of high-temperature-resistant copper or copper alloy materials.
6. The rotary acoustic field liquid bridge capillary convection experiment device of claim 1, wherein: the shell of the device is a closed inner cavity, and a humidifier (126) is also arranged in the closed inner cavity;
a lower top support (131) for supporting the lower liquid bridge support (15) is arranged at the bottom of the device;
a displacement sensor (132) for sensing the descending of the upper liquid bridge support column (14) is arranged in the device;
a reversing cylinder (133) for assisting the lower surface of the overhead hydraulic bridge strut (14) is arranged in the device, so that the gap error during the reversing movement can be eliminated; a buffer spring (134) for abutting against the lower surface of the upper liquid bridge support column (14) is arranged at the upper end of the reversing cylinder (133); an auxiliary tray (36) controlled by a manipulator to move is arranged in the device, and the lower end of a reversing cylinder (133) and a displacement sensor (132) are arranged on the upper surface of the auxiliary tray (36);
a second rotating motor (38) is arranged on the upper liquid bridge support column (14), the root of a counterweight swing arm (39) is connected to a main shaft of the second rotating motor (38) in a key way, the second rotating motor (38) drives the counterweight swing arm (39) to swing, and the counterweight swing arm (39) rotates to generate vibration so as to eliminate bubbles accumulated in the liquid bridge and/or monitor the influence of the vibration on the liquid bridge;
a hinge joint (37) is arranged between the upper liquid bridge support disc (8) and the upper liquid bridge support column (14) so as to ensure that the lower surface of the upper liquid bridge support disc (8) is attached to the upper surface of the lower liquid bridge support disc (9);
a pressure sensor (40) is arranged between the lower liquid bridge support disc (9) and the lower liquid bridge support column (15) so as to detect the lower pressure of the upper liquid bridge support disc (8).
7. The rotary acoustic field liquid bridge capillary convection experiment device of claim 1, wherein: a polishing double-arm manipulator (127) is arranged on one side of the upper liquid bridge supporting disc (8), and the polishing double-arm manipulator (127) is respectively connected with a polishing head (128), a coloring brush (129) and a diamond pen (130);
the coloring hairbrush (129) is used for dipping the coloring agent and smearing the coloring agent on the lower surface of the upper liquid bridge support disc (8), the lower surface of the upper liquid bridge support disc (8) dipped with the coloring agent and the lower surface of the upper liquid bridge support disc (8) are ground, and the grinding head (128) grinds according to the grinding conditions; the diamond pen (130) trims the grinding bit (128).
8. The rotary acoustic field liquid bridge capillary convection experiment device of claim 1, wherein: a primary abrasive particle collecting part (43) is arranged on one side of the upper liquid bridge supporting plate (8), a primary abrasive particle matching rotating shaft (41) is vertically arranged in the primary abrasive particle collecting part (43), a primary abrasive particle feeding auger (44) is obliquely arranged in the primary abrasive particle collecting part (43), and a primary abrasive particle matching grinding disc (42) is arranged above the primary abrasive particle collecting part (43);
an input end of a primary abrasive particle guide channel (45) is arranged at the upper output end of the primary abrasive particle feeding auger (44), and the lower end of the primary abrasive particle guide channel (45) is positioned above the other part of the primary abrasive particle matched grinding disc (42);
a part of the primary abrasive grain matched grinding disc (42) rotates to be in contact with the lower surface of the upper liquid bridge support disc (8), and the abrasive grains on the upper liquid bridge support disc fall into a primary abrasive grain collecting part (43) to be collected; the primary abrasive particle feeding auger (44) is used for collecting abrasive particles in the primary abrasive particle collecting part (43) in a rising manner and sending the abrasive particles to the primary abrasive particle matched grinding disc (42) along the primary abrasive particle guide channel (45) to continue serving as abrasive particles;
a secondary abrasive grain fixing frame (46) is arranged on the upper liquid bridge support column (14), and a secondary abrasive grain outer sheath (49) sleeved on the upper liquid bridge support disc (8) and provided with a secondary abrasive grain inlet (50) is connected below the secondary abrasive grain fixing frame (46) through a secondary abrasive grain reset spring (47);
the lower end of the secondary abrasive particle fixing frame (46) is provided with a secondary abrasive particle pressing C-shaped hand (48) for pressing down the secondary abrasive particle outer sheath (49);
a secondary abrasive grain grid plate (51) is arranged on the secondary abrasive grain outer sheath (49) and is used for being inserted into the secondary abrasive grain outer sheath (49);
a secondary abrasive particle blanking notch (52) is arranged on the lower liquid bridge support disc (9), and the secondary abrasive particle blanking notch (52) corresponds to a secondary abrasive particle storage part (53);
the C-shaped hand (48) is pressed down by the secondary abrasive particles to press down the secondary abrasive particle outer sheath (49) so that the secondary abrasive particles are sleeved between the upper liquid bridge support disc (8) and the lower liquid bridge support disc (9), and the secondary abrasive particles fall into the secondary abrasive particle storage part (53) through the secondary abrasive particle blanking notch (52).
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