An experimental system for measuring bubble migration characteristics in transparent and non-transparent liquids

Abstract

The invention discloses an experimental system for measuring bubble migration characteristics in transparent and non-transparent liquids, comprising a transparent experimental test mechanism, a non-transparent experimental test mechanism, a bubble injection mechanism, a first circulation mechanism, a second circulation mechanism, an internal ultrasonic Doppler probe and an external ultrasonic Doppler probe; the transparent experimental test mechanism comprises a transparent test tube and a high-speed camera; the transparent test tube is connected to the first circulation mechanism as a circulation loop; the high-speed camera shooting area is aligned with the transparent test tube; the non-transparent experimental test mechanism comprises a non-transparent test tube and a cavitation probe; the non-transparent test tube is connected to the second circulation mechanism as a circulation loop; the cavitation probe monitoring needle is placed in the non-transparent test tube; a plurality of internal ultrasonic Doppler probes contacting liquid surfaces are respectively arranged in the transparent test tube and the non-transparent test tube; a plurality of external ultrasonic Doppler probe coupling agents are connected to the outside of the transparent test tube and the non-transparent test tube; and the bubble injection mechanism is respectively connected to the transparent test tube and the non-transparent test tube.

Description

Technical Field

[0001] The invention relates to the field of thermal hydraulic safety technology of lead-based fast reactors in a fourth-generation nuclear energy system, and in particular to an experimental system for measuring bubble migration characteristics in transparent and non-transparent liquids. Background Art

[0002] Lead-based fast reactor refers to a fast neutron reactor that uses liquid lead or lead-bismuth as a coolant. At present, the typical lead-based fast reactor technology adopts a pool-type structure design. The steam generator is directly immersed in the molten lead-based alloy pool of the first circuit. The pressurized supercooled water of the second circuit and the low-pressure and high-temperature liquid lead-based alloy coolant of the first circuit are separated by only one wall of the heat transfer tube of the steam generator. The heat transfer tube is broken due to the temperature difference and pressure difference on both sides of the heat transfer tube, the vibration of the loop fluid and the corrosion of the coolant on the heat transfer tube material. The rupture of the heat transfer tube allows the high-pressure supercooled water of the second circuit to be directly sprayed into the low-pressure and high-temperature coolant of the first circuit. After the high-pressure supercooled water and the low-pressure liquid metal coolant come into contact, a large number of steam bubbles are generated, and a steam-liquid metal two-phase flow is formed through the ruptured part. These steam bubbles may migrate to the vicinity of the core along with the flow of liquid lead-based alloy, causing reactivity fluctuations. If the steam bubbles adhere to the surface of the fuel cladding, it will also cause heat transfer deterioration and core damage, posing a great threat to reactor safety. However, due to the opacity and high temperature of liquid lead-based alloys, the flow field monitoring environment is harsh, and the limitations of liquid metal flow field measurement technology, there is still a lack of experimental data on the bubble migration characteristics in lead-based alloys.

[0003] In this regard, an existing invention discloses a mechanical impact and bubble migration experimental device and method for the rupture of a heat transfer tube of a lead-based reactor steam generator. However, the invention only focuses on the specific area where the bubbles emerge from above the rod bundle of the core assembly after entering the core, and does not pay attention to the influence of key parameters such as liquid temperature, liquid flow velocity and bubble diameter on the migration direction, migration velocity and shape change of the bubbles, and is unable to control the changes in liquid velocity and liquid temperature; and due to the opacity of liquid lead-based alloys, the above technical scheme is unable to monitor the distribution of bubbles of different equivalent diameters in the liquid and the movement process of the bubbles in the liquid, and is unable to fully grasp the migration law of bubbles in the loop in the event of a rupture accident of a heat transfer tube of a lead-based fast reactor steam generator.

[0004] In summary, an experimental system for measuring the migration characteristics of bubbles in transparent and non-transparent liquids, which can control the changes in liquid velocity, liquid temperature, and bubble diameter, and detect the movement process of bubbles in non-transparent liquids, is of great significance for the research and development of lead-based fast reactors in my country. Summary of the invention

[0005] The object of the present invention is to provide an experimental system for measuring the migration characteristics of bubbles in transparent and non-transparent liquids, so as to solve the problem that the existing experimental system for measuring the migration characteristics of bubbles cannot control the fluid velocity, temperature and bubble diameter and cannot fully grasp the migration law of bubbles in the circuit under the rupture accident of the heat transfer tube of the lead-based fast reactor steam generator.

[0006] In order to solve the above technical problems, the present invention provides an experimental system for measuring the migration characteristics of bubbles in transparent and non-transparent liquids, comprising a transparent experimental testing mechanism, a non-transparent experimental testing mechanism, a bubble injection mechanism, a first circulation mechanism, a second circulation mechanism, an internal ultrasonic Doppler probe and an external ultrasonic Doppler probe; the transparent experimental testing mechanism comprises a transparent test tube and a high-speed camera; the transparent test tube is connected to the first circulation mechanism as a circulation loop; the shooting area of ​​the high-speed camera is aligned with the transparent test tube; the non-transparent experimental testing mechanism comprises a non-transparent test tube and a cavitation probe; the non-transparent test tube is connected to the second circulation mechanism as a circulation loop; the monitoring part of the cavitation probe is placed in the non-transparent test tube; multiple internal ultrasonic Doppler probes are respectively arranged inside the transparent test tube and the non-transparent test tube; multiple external ultrasonic Doppler probes are respectively arranged outside the transparent test tube and the non-transparent test tube; the bubble injection mechanism is connected to the transparent test tube and the non-transparent test tube respectively.

[0007] In one of the embodiments, the transparent test tube is installed vertically; a first pressure relief installation port is provided on the top of the transparent test tube; the first internal ultrasonic Doppler probe is fixedly installed on the upper part of the transparent test tube; and the transparent test tube is provided with a plurality of first temperature sensors and a plurality of first pressure sensors.

[0008] In one embodiment, the first circulation mechanism includes a first storage tank and a centrifugal pump; the bottom pipe of the first storage tank is connected to the bottom of the transparent test tube, the bottom pipe of the first storage tank is connected to the centrifugal pump, and the centrifugal pump pipe is connected to the top of the transparent test tube.

[0009] In one embodiment, the first circulation mechanism further includes a first heating device, a first auxiliary heating device and a first circulation pipeline; the first storage tank is provided with a third temperature sensor; the first heating device is installed on the outer wall of the first storage tank; and the first auxiliary heating device is installed on the outer wall of the first circulation pipeline.

[0010] In one of the embodiments, the non-transparent test tube is installed vertically; a second pressure relief installation port is provided on the top of the non-transparent test tube; a first drainage installation port is provided on the bottom of the non-transparent test tube; the second internal ultrasonic Doppler probe is fixedly installed on the upper part of the non-transparent test tube; the wall of the non-transparent test tube has two rows of probe holes symmetrical along the vertical axis, and the probe holes are connected to the cavitation probe; the non-transparent test tube is provided with multiple second temperature sensors and multiple second pressure sensors.

[0011] In one embodiment, the second circulation mechanism includes a second storage tank and an electromagnetic pump; the bottom pipe of the second storage tank is connected to the bottom of the non-transparent test tube, the bottom pipe of the second storage tank is connected to the electromagnetic pump, and the electromagnetic pump pipe is connected to the top of the non-transparent test tube.

[0012] In one embodiment, the second circulation mechanism further includes a second heating device, a second auxiliary heating device and a second circulation pipeline; the second storage tank is provided with a fourth pressure sensor and a fourth temperature sensor, and the second storage tank is provided with a gas inlet; the outer surfaces of the second storage tank and the connected pipeline are covered with a high-temperature insulation coating; the second heating device is installed on the outer wall of the second storage tank; and the second auxiliary heating device is installed on the outer wall of the second circulation pipeline.

[0013] In one embodiment, the plurality of external ultrasonic Doppler probes are respectively installed in two rows symmetrically along the axis of the transparent test tube and the non-transparent test tube; the ultrasonic Doppler probes are fixedly connected to the tube wall via a coupling agent.

[0014] In one embodiment, the bubble injection mechanism includes a high-pressure gas cylinder, a gas storage tank, a one-way valve, a three-way pipe, a first air pipe, a second air pipe, a first bubble eruption hole and a second bubble eruption hole; the high-pressure gas cylinder pipeline is connected to the gas storage tank, the gas storage tank pipeline is connected to the one-way valve, and the one-way valve pipeline is connected to one end of the three-way pipe; the other end of the three-way pipe is connected to the first air pipe, the first air pipe pipeline is connected to the first bubble eruption hole, and the first bubble eruption hole is threadedly connected to the transparent test tube; the last end of the three-way pipe is connected to the second air pipe, the second air pipe pipeline is connected to the second bubble eruption hole, and the second bubble eruption hole is threadedly connected to the non-transparent test tube.

[0015] In one embodiment, the experimental system for measuring the migration characteristics of bubbles in transparent and non-transparent liquids also includes an auxiliary system and a control terminal; the auxiliary system includes a power supply module, an acquisition circuit module, a data acquisition module, a control module and a heating and temperature control module; the power supply module is electrically connected to the data acquisition module, the control module and the control terminal; the acquisition circuit module signals are connected to multiple temperature sensors, multiple pressure sensors, multiple ultrasonic Doppler probes and multiple cavitation probes; the data acquisition module is electrically connected to the acquisition circuit module and the control terminal; the control module includes a solenoid valve control circuit and a drive pump control circuit; the heating and temperature control module is electrically connected to the control terminal; and the control terminal is a computer.

[0016] The beneficial effects of the present invention are as follows:

[0017] The transparent test tube and the non-transparent test tube can respectively carry out bubble migration movement experiments in transparent liquid and non-transparent liquid, and explore the steam bubble migration movement mechanism in molten lead and bismuth from the transparent liquid to the non-transparent liquid from the shallow to the deep;

[0018] The high-speed camera is aimed at the transparent test tube, so as to realize the visualization of the entire bubble movement process in the transparent flowing liquid, and directly detect and grasp the bubble migration characteristics in the transparent flowing liquid;

[0019] The non-transparent test tube is equipped with the external ultrasonic Doppler probe, the internal ultrasonic Doppler probe and the cavitation probe, which can detect the rising speed, movement trajectory and diameter of the bubble, visualize the bubble movement process of the non-transparent liquid, and detect and grasp the bubble migration characteristics in the non-transparent flowing liquid;

[0020] The centrifugal pump, the electromagnetic pump, the first heating device, the second heating device, the first auxiliary heating device, the second auxiliary heating device and the electromagnetic valve are all connected to the auxiliary system and the terminal, and can conveniently adjust the liquid temperature, liquid velocity and bubble diameter, thereby covering most parameters under the heat transfer tube rupture accident of the lead-based fast reactor steam generator, so as to fully grasp the migration law of bubbles under the condition of the heat transfer tube rupture accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1It is a structural schematic diagram of a preferred first embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the functional modules of the auxiliary system of the present invention;

[0024] Figure 3 It is a structural schematic diagram provided during the transparent experiment of the preferred second embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure provided in the non-transparent experiment of the preferred second embodiment of the present invention;

[0026] Figure 5 This is a comparison chart of the final velocity of bubbles floating in liquid lead and bismuth measured by ultrasonic Doppler instrument and the results of Jamialahmadi empirical formula;

[0027] Figure 6 It is the relationship between the distance between the bubble in liquid lead and bismuth and the probe of the ultrasonic Doppler instrument and the bubble velocity.

[0028] The reference numerals are as follows:

[0029] 1. Transparent experimental test mechanism; 10. Transparent test tube; 11. High-speed camera; 12. Fill light; 13. First exhaust valve; 14. First pressure sensor; 15. First temperature sensor; 150. First temperature sensor 1; 151. First temperature sensor 2;

[0030] 2. Non-transparent experimental test mechanism; 20. Non-transparent test tube; 21. Cavitation probe; 22. Second exhaust valve; 23. First exhaust valve; 24. Second pressure sensor; 25. Second temperature sensor; 250. Second temperature sensor 1; 251. Second temperature sensor 2;

[0031] 3. Bubble injection mechanism; 30. Bubble; 31. High-pressure gas cylinder; 32. Gas storage tank; 33. One-way valve; 34. Three-way pipe; 35. Air pipe; 350. First air pipe; 351. Second air pipe; 36. Bubble ejection hole; 360. First bubble ejection hole; 361. Second bubble ejection hole; 37. Pressure reducing valve; 38. Solenoid valve; 380. First solenoid valve; 381. Second solenoid valve; 39. Third pressure sensor; 390. Third pressure sensor 1; 391. Third pressure sensor 2; 3a. First valve;

[0032] 4. First circulation mechanism; 40. First storage tank; 41. Centrifugal pump; 42. First heating device; 43. First auxiliary heating device; 44. First circulation pipeline; 45. First electromagnetic flowmeter; 46. Third temperature sensor; 47. Second discharge valve; 48. Second valve;

[0033] 5. Second circulation mechanism; 50. Second storage tank; 51. Electromagnetic pump; 52. Second heating device; 53. Second auxiliary heating device; 54. Second circulation pipeline; 55. Second electromagnetic flowmeter; 56. Fourth pressure sensor; 57. Fourth temperature sensor; 58. Third discharge valve; 59. Gas inlet; 5a. Third valve; 5b. Fourth valve;

[0034] 6. internal ultrasound Doppler probe; 60. first internal ultrasound Doppler probe; 61. second internal ultrasound Doppler probe;

[0035] 7. External ultrasound Doppler probe;

[0036] 8. Auxiliary system; 80. Power supply module; 81. Collection circuit module; 810. Temperature data collection circuit; 811. Pressure data collection circuit; 812. Ultrasonic signal collection circuit; 813. Cavitation probe signal collection circuit; 82. Data collection module; 83. Control module; 830. Solenoid valve control circuit; 831. Drive pump control circuit; 84. Heating temperature control module;

[0037] 9. Control terminal;

[0038] 10a. Water;

[0039] 11a. Liquid lead bismuth. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] The present invention provides an experimental system for measuring the migration characteristics of bubbles 30 in transparent and non-transparent liquids. Figure 1 and Figure 4 As shown, it includes a transparent experimental test mechanism 1, a non-transparent experimental test mechanism 2, a bubble injection mechanism 3, a first circulation mechanism 4, a second circulation mechanism 5, an internal ultrasonic Doppler probe 6 and an external ultrasonic Doppler probe 7; the transparent experimental test mechanism 1 includes a transparent test tube 10 and a high-speed camera 11; the transparent test tube 10 is connected to the first circulation mechanism 4 as a circulation loop; the shooting area of ​​the high-speed camera 11 is aligned with the transparent test tube 10; the non-transparent experimental test mechanism 2 includes a non-transparent test tube 20 and a cavitation probe 21; the non-transparent test tube 20 is connected to the second circulation mechanism 5 as a circulation loop; the monitoring part of the cavitation probe 21 is placed in the non-transparent test tube 20; a plurality of internal ultrasonic Doppler probes 6 are respectively arranged inside the transparent test tube 10 and the non-transparent test tube 20; a plurality of external ultrasonic Doppler probes 7 are respectively arranged outside the transparent test tube 10 and the non-transparent test tube 20; the bubble injection mechanism 3 is connected to the transparent test tube 10 and the non-transparent test tube 20 respectively.

[0042] The transparent liquid is water 10a, and the non-transparent liquid is liquid lead bismuth 11a.

[0043] like Figure 1 As shown, the transparent test tube 10 is used to hold liquid water 10a. The transparent test tube 10 is a long tube made of transparent acrylic material. The transparent test tube 10 is installed vertically. A first pressure relief installation port is provided on the top of the transparent test tube 10. The first pressure relief installation port is fixedly connected to a first exhaust valve 13. A first internal ultrasonic Doppler probe 60 is fixedly installed on the upper part of the transparent test tube 10. The first internal ultrasonic Doppler probe 60 is an ultrasonic Doppler probe. The ultrasonic Doppler probe contacts the liquid water 10a in the transparent test tube. The ultrasonic Doppler probe is used to measure the instantaneous rising speed of the bubble 30. The transparent test tube 10 has a high-speed camera 11, a fill light 12 and a diffuser plate aimed at the transparent test tube 10. tube 10; a high-speed camera 11 is used to capture the movement trajectory of the bubble 30, and the high-speed camera 11 is electrically connected to the control terminal 9; a fill light 12 is used to provide sufficient illumination, and a diffuser plate is used to provide a clean background for subsequent image processing; the transparent test tube 10 is provided with a first temperature sensor 150, a first temperature sensor 2 151 and a first pressure sensor 14, and a plurality of first temperature sensors 15 and a first pressure sensor 14 are used to collect temperature data and pressure data in the circuit during the experiment, and the plurality of first temperature sensors 15 and the first pressure sensors 14 are electrically connected to the control terminal 9 through the auxiliary system 8, and the temperature data and the pressure data are transmitted to the control terminal 9.

[0044] Among them, the vertical installation method of the transparent test tube 10 simulates the installation method in the lead-based fast reactor, the movement of the bubble 30 in the vertical transparent test tube 10 simulates the movement method of the bubble 30 in the lead-based fast reactor heat transfer tube rupture accident, and the high-speed camera 11 is used to capture the movement trajectory of the bubble 30 in the water 10a in the transparent test tube; therefore, the bubble 30 migration experiment of the water 10a can be carried out in the transparent test tube 10 and the mechanism of the bubble 30 migration characteristics can be summarized.

[0045] like Figure 1 As shown, the first circulation mechanism 4 includes a first storage tank 40, a centrifugal pump 41 and a first electromagnetic flowmeter 45; the bottom pipeline of the first storage tank 40 is connected to the bottom of the transparent test tube 10; the bottom pipeline of the first storage tank 40 is connected to the centrifugal pump 41, and a first electromagnetic flowmeter 45 is also connected to the first storage tank 40 and the centrifugal pump 41 through a pipeline, and the first electromagnetic flowmeter 45 is used to measure the flow rate of water 10a in the pipeline; the pipeline of the centrifugal pump 41 is connected to the top of the transparent test tube 10, and a second valve 48 is also connected to the top of the transparent test tube 10 and the centrifugal pump 41 through a pipeline, and the second valve 48 is used to control the opening and closing of the pipeline; the centrifugal pump 41 can adjust the flow state of the water 10a and the flow rate of the water 10a, and the centrifugal pump 41 is electrically connected to the control terminal 9 through the auxiliary system 8.

[0046] Among them, the first storage tank 40 and the centrifugal pump 41 are connected to the transparent test tube 10 by pipeline to form an experimental loop, and the pipeline connection method in the loop is a detachable connection; the centrifugal pump 41 controls the flow rate and state of the water 10a flowing back to the transparent test tube 10 through the control terminal 9, and forms different scenes of water 10a flow rate and water 10a state in the transparent test tube 10, which can facilitate the study of the migration characteristics of bubbles 30 in different water 10a flow rate and water 10a state scenes.

[0047] It should be pointed out that the specific detachable connection is a pipe connector connection. The connector sleeve is set at the two pipe ends. The side bolts are tightened so that the locking teeth bite the surface of the pipe end to achieve a limit fixation, and the sealing sleeve is tightly attached to the pipe to achieve a locking state of a sealed and firmly connected connection, so that the experimental circuit has good air tightness.

[0048] like Figure 1 As shown, the first circulation mechanism 4 also includes a first heating device 42, a first auxiliary heating device 43 and a first circulation pipeline 44; the first storage tank 40 is also provided with an injection port and a third temperature sensor 46, the injection port is used to add water 10a, the third temperature sensor 46 is used to collect temperature data in the circuit during the experiment, and the third temperature sensor 46 is electrically connected to the control terminal 9 and transmits the temperature data to the control terminal 9; the first heating device 42 is installed on the outer wall of the first storage tank 40; the first circulation pipeline 44 is provided with a second discharge installation port, the second discharge installation port is fixedly connected to the second discharge valve 47, and the first auxiliary heating device 43 is installed on the outer wall of the first circulation pipeline 44.

[0049] Among them, the first heating device 42 includes a first heating coil and a first thermostat, and the first heating coil and the first thermostat are electrically connected; the first heating coil is used to heat the water 10a in the storage tank to maintain the liquid state of the working fluid, and the first thermostat is used to adjust the temperature of the first heating coil; the auxiliary heating device includes a second heating coil and a second thermostat, and the second heating coil and the second thermostat are electrically connected; the second heating coil is used to heat the water 10a in the circulation pipe to maintain the liquid state of the working fluid, and the second thermostat is used to adjust the temperature of the second heating coil; the first thermostat and the second thermostat are both electrically connected to the control terminal 9 through the auxiliary system 8, which can be used to control the water 10a in the experiment to be heated to a specified temperature and maintain a stable state.

[0050] It should be noted that the temperature of the water 10a in the experimental loop can be adjusted by the first thermostat and the second thermostat to form scenes with different water temperatures in the transparent test tube 10, which is convenient for studying the migration characteristics of the bubbles 30 in scenes with different water temperatures of the water 10a.

[0051] like Figure 1As shown, the non-transparent test tube 20 is used to hold the liquid lead bismuth 11a. The non-transparent test tube 20 is made of a long tube made of stainless steel with strong corrosion resistance. The non-transparent test tube 20 is installed vertically. A second pressure relief installation port is provided on the top of the non-transparent test tube 20, and the second pressure relief installation port is fixedly connected to the second exhaust valve 22. A first drainage installation port is provided at the bottom of the non-transparent test tube 20, and the first drainage installation port is fixedly connected to the first exhaust valve 23. A second internal ultrasonic Doppler probe 61 is fixedly installed on the upper part of the non-transparent test tube 20. The second internal ultrasonic Doppler probe 61 is an ultra-high temperature waveguide probe. The ultra-high temperature waveguide probe is in contact with the liquid lead bismuth 11a. The ultra-high temperature waveguide probe is used to measure the gas The instantaneous rising speed of the bubble 30 can measure the liquid above 230°C; the wall of the non-transparent test tube 20 has two rows of probe holes symmetrical along the vertical axis, and the detection part of the cavitation probe 21 is inserted into the probe hole, so that the detection part of the cavitation probe 21 is located in the middle of the non-transparent test tube 20, and the cavitation probe 21 is used to detect the number and distribution of different types of bubbles in the transparent test tube 10. The cavitation probe 21 is electrically connected to the control terminal 9 through the auxiliary system 8; the non-transparent test tube 20 is provided with a second temperature sensor 1 250, a second temperature sensor 251 and a second pressure sensor 24, and multiple second temperature sensors 25 and second pressure sensors 24 are electrically connected to the control terminal 9 through the auxiliary system 8.

[0052] Among them, the vertical installation method of the non-transparent test tube 20 simulates the installation method in the lead-based fast reactor, the movement of the bubble 30 in the vertical non-transparent test tube 20 simulates the movement method of the bubble 30 in the liquid lead-bismuth 11a in the lead-based fast reactor heat transfer tube rupture accident, and the cavitation probe 21 is used to detect the number and distribution of different types of cavitations in the liquid lead-bismuth 11a in the non-transparent test tube 20; therefore, the migration experiment of the bubble 30 in the liquid lead-bismuth 11a can be carried out in the non-transparent test tube 20 and the mechanism of the migration characteristics of the bubble 30 can be summarized.

[0053] like Figure 1As shown, the second circulation mechanism 5 includes a second storage tank 50, an electromagnetic pump 51 and a second electromagnetic flowmeter 55; the bottom pipeline of the second storage tank 50 is connected to the bottom of the non-transparent test tube 20, and a third valve 5a is connected to the bottom of the second storage tank 50 and the non-transparent test tube 20 through a pipeline, and the third valve 5a is used to control the opening and closing of the pipeline between the second storage tank 50 and the bottom of the non-transparent test tube 20; the bottom pipeline of the second storage tank 50 is connected to the electromagnetic pump 51, and a second electromagnetic flowmeter 55 is connected to the second storage tank 50 and the electromagnetic pump 51 through a pipeline, and the second electromagnetic flowmeter 55 is used to measure the flow rate of liquid lead bismuth 11a in the pipeline; the electromagnetic pump 51 pipeline is connected to the top of the non-transparent test tube 20, the electromagnetic pump 51 pipeline is connected to the top of the non-transparent test tube 20, and a fourth valve 5b is also connected to the pipeline between the top of the non-transparent test tube 20 and the electromagnetic pump 51. The fourth valve 5b is used to control the opening and closing of the pipeline between the second storage tank 50 and the top of the non-transparent test tube 20; the electromagnetic pump 51 can adjust the flow state of the liquid lead bismuth 11a and the flow rate of the liquid lead bismuth 11a, and the electromagnetic pump 51 is electrically connected to the control terminal 9 through the auxiliary system 8.

[0054] Among them, the second storage tank 50 and the electromagnetic pump 51 are connected to the non-transparent test tube 20 by pipeline to form an experimental loop, and the pipeline connection method in the loop is a detachable connection; the electromagnetic pump 51 controls the flow rate and state of the liquid lead bismuth 11a flowing back to the non-transparent test tube 20 through the control terminal 9, and forms scenes with different flow rates and states of the liquid lead bismuth 11a in the non-transparent test tube 20, which can facilitate the study of the migration characteristics of the bubbles 30 in the scenes with different flow rates and states of the liquid lead bismuth 11a.

[0055] It should be pointed out that the specific detachable connection is a pipe connector connection. The connector sleeve is placed on the two pipe ends, and the side bolts are tightened so that the locking teeth bite the surface of the pipe end to achieve a limit fixation, and the sealing sleeve is tightly attached to the pipe to achieve a locking state of a sealed and firmly connected connection, so that the experimental circuit has good air tightness.

[0056] like Figure 1 As shown, the second circulation mechanism 5 also includes a second heating device 52, a second auxiliary heating device 53 and a second circulation pipeline 54; the second storage tank 50 is also provided with an injection port, a fourth pressure sensor 56 and a fourth temperature sensor 57, the injection port is used to add lead bismuth, and the fourth pressure sensor 56 and the fourth temperature sensor 57 are electrically connected to the control terminal 9; the second storage tank 50 is provided with a gas access port 59, and the gas accessed is an inert gas, which is used to pressurize the second storage tank 50, thereby pressing the liquid lead bismuth 11a in the second storage tank 50 into the loop; the outer surfaces of the second storage tank 50 and the connected pipeline are covered with a high-temperature insulation layer; the second heating device 52 is installed on the outer wall of the second storage tank 50; the second circulation pipeline 54 is provided with a third discharge installation port, the third discharge installation port is fixedly connected to the third discharge valve 58, and the second auxiliary heating device 53 is installed on the outer wall of the second circulation pipeline 54.

[0057] Among them, the second heating device 52 includes a third heating coil and a third thermostat, and the third heating coil and the third thermostat are electrically connected; the third heating coil is used to heat the lead bismuth in the storage tank to maintain the liquid state of the working fluid, and the third thermostat is used to adjust the temperature of the third heating coil; the second auxiliary heating device 53 includes a fourth heating coil and a fourth thermostat, and the fourth heating coil and the fourth thermostat are electrically connected; the fourth heating coil is used to heat the liquid lead bismuth 11a in the circulation pipeline to maintain the liquid state of the working fluid, and the fourth thermostat is used to adjust the temperature of the fourth heating coil; the third thermostat and the fourth thermostat are electrically connected to the control terminal 9 through the auxiliary system 8, which can be used to control the liquid lead bismuth 11a in the experiment to be heated to a specified temperature and maintain a stable state.

[0058] It should be pointed out that the temperature of the liquid lead-bismuth 11a in the experimental loop can be adjusted by the third temperature controller and the fourth temperature controller, so as to form scenes with different temperatures of the liquid lead-bismuth 11a in the non-transparent test tube 20, which is convenient for studying the migration characteristics of bubbles 30 in different temperature scenes of the liquid lead-bismuth 11a.

[0059] like Figure 1 As shown, a plurality of external ultrasonic Doppler probes 7 are respectively installed in two rows symmetrically along the axis of the transparent test tube 10 and the non-transparent test tube 20, the center line of the installation position of each row of external ultrasonic Doppler probes 7 is horizontal to the pipeline axis, and each row of external ultrasonic Doppler probes 7 are installed at equal intervals; the external ultrasonic Doppler probe 7 is fixedly connected to the pipe wall by a coupling agent, the angle between the external ultrasonic Doppler probe 7 and the pipe wall is a certain angle, and the angle between the probe and the pipe wall can be set by the experimenter, and the experimenter only needs to input the angle into the analysis software equipped with the ultrasonic Doppler velocimeter, and the software will calculate the measured speed according to the input angle; for example, in the present invention, the angle of the transparent pipeline experiment can be that the probe is downward at 60° or other angles to the vertical direction; a plurality of external ultrasonic Doppler probes 7 are electrically connected to the control terminal 9 through the auxiliary system 8.

[0060] The relationship between the distance between the multiple external ultrasound Doppler probes 7 and the velocity of the bubble 30 is as follows: Figure 5 and Figure 6 As shown, multiple external ultrasonic Doppler probes 7 can be used to detect the movement trajectory and diameter of the bubble 30. The data of the multiple external ultrasonic Doppler probes 7 are transmitted to the control terminal 9, so that the movement process of the bubble 30 in the transparent and non-transparent liquids can be visualized.

[0061] It should be pointed out that when the bubble 30 migration experiment is carried out in the transparent test tube 10, the data obtained by the two measurement methods of multiple external ultrasonic Doppler probes 7 technology and high-speed camera 11 technology can be compared with each other, and the high-speed camera 11 technology provides a visual reference for the multiple external ultrasonic Doppler probes 7 technology in the bubble 30 measurement; when the bubble 30 migration experiment is carried out in the non-transparent test tube 20, the data obtained by the two measurement methods of multiple external ultrasonic Doppler probes 7 technology and cavitation probe 21 technology can be compared with each other, and the multiple external ultrasonic Doppler probes 7 technology as a non-contact measurement technology and the cavitation probe 21 as a contact measurement technology can compare the advantages and disadvantages of the contact measurement method.

[0062] like Figure 1 As shown, the bubble injection mechanism 3 includes a high-pressure gas cylinder 31, a gas storage tank 32, a one-way valve 33, a three-way pipe 34, a first air pipe 350, a second air pipe 351, a first bubble ejection hole 360 ​​and a second bubble ejection hole 361; the pipeline of the high-pressure gas cylinder 31 is connected to the gas storage tank 32, the first solenoid valve 380, the pressure reducing valve 37 and the third pressure sensor 390; the pipeline of the gas storage tank 32 is connected to the one-way valve 33 and the second solenoid valve 381, and a gas mass flow controller is also connected between the one-way valve 33 and the second solenoid valve 381, and the gas mass flow controller is used to measure the gas flow rate; the gas storage tank 32 is connected to the one-way valve 33 and the second solenoid valve 381, and the gas mass flow controller is used to measure the gas flow rate; The tank 32 is also provided with a third pressure sensor 391; the one-way valve 33 is connected to one end of the three-way pipe 34 through a pipeline, and a first valve 3a is connected between the one-way valve and the three-way pipe through a pipeline; the other end of the three-way pipe 34 is connected to the first air pipe 350 through a pipeline, and the first air pipe 350 is connected to the first bubble eruption hole 360, and the first bubble eruption hole 360 ​​is detachably connected to the transparent test tube 10; the last end of the three-way pipe 34 is connected to the second air pipe 351 through a pipeline, and the second air pipe 351 is connected to the second bubble eruption hole 361, and the second bubble eruption hole 361 is threadedly connected to the non-transparent test tube 20.

[0063] Among them, the gas in the high-pressure gas cylinder 31 is argon or other inert gas. The first solenoid valve 380 and the pressure reducing valve 37 are opened. After the air pressure of the third pressure sensor 2 391 in the gas storage tank 32 reaches the target value, the second solenoid valve 381 is opened to continuously inject the argon gas in the gas storage tank 32 into the bubble ejection hole 36 at a set flow rate and pressure to generate bubbles 30 of a certain diameter and inject them into the liquid.

[0064] It should be pointed out that the threaded connection method of the first bubble ejection hole 360 ​​and the second bubble ejection hole 361 is that threaded holes are set on the tube walls of the transparent test tube 10 and the non-transparent test tube 20, and the first bubble ejection hole 360 ​​and the second bubble ejection hole 361 are threadedly connected; the bubble ejection hole 36 can be replaced with ejection holes of different specifications according to different liquid flow rates and the size of the bubble 30 to be studied.

[0065] like Figure 4As shown, an experimental system for measuring the migration characteristics of bubbles 30 in transparent and non-transparent liquids also includes an auxiliary system 8 and a control terminal 9; the auxiliary system 8 includes a power supply module 80, an acquisition circuit module 81, a data acquisition module 82, a control module 83 and a heating temperature control module 84; the power supply module 80 is electrically connected to the data acquisition module 82, the control module 83 and the control terminal 9; the acquisition circuit module 81 is signal-connected to multiple temperature sensors, multiple pressure sensors, multiple internal ultrasonic Doppler probes 6, multiple external ultrasonic Doppler probes 7 and multiple cavitation probes 21; the data acquisition module 82 ... The data acquisition module 82 is used to record and save the temperature, pressure, bubble 30 data and other information transmitted by the acquisition circuit module 81 electrically connected, and transmit it to the control terminal 9; the control module 83 includes the solenoid valve 38 control circuit and the centrifugal pump 41 or the solenoid pump 51 control circuit, and the control module 83 is used to control the opening and closing of the solenoid valve 38 and the working power of the centrifugal pump 41 or the solenoid pump 51; the heating temperature control module 84 is electrically connected to the control terminal 9 with a USB, and the heating temperature control module 84 controls the temperature of the liquid in the control loop; the control terminal 9 is a computer.

[0066] Among them, the centrifugal pump 41, the electromagnetic pump 51, the first heating device 42, the second heating device 52, the first auxiliary heating device 43, the second auxiliary heating device 53 and the electromagnetic valve 38 are all electrically connected to the auxiliary system 8, and the auxiliary system 8 is electrically connected to the control terminal 9. The experimenter can conveniently adjust the liquid temperature, liquid velocity and bubble 30 diameter through the control terminal 9, thereby covering most of the parameters under the heat transfer tube rupture accident of the lead-based fast reactor steam generator; the high-speed camera 11, the cavitation probe 21, multiple internal Doppler probes 6, multiple external Doppler probes 7, multiple temperature sensors and multiple pressure sensors are all electrically connected to the auxiliary system 8, and the auxiliary system 8 is electrically connected to the control terminal 9. The experimenter can detect, analyze and master the experimental data through the control terminal 9, so as to fully master the migration law of the bubble 30 under the condition of the heat transfer tube rupture accident.

[0067] In summary, after adopting the scheme disclosed in this embodiment, since the transparent experimental test mechanism 1 and the non-transparent experimental test mechanism 2 are connected in parallel, the invention can simultaneously carry out the migration movement experiment of the bubble 30 in the transparent liquid and the non-transparent liquid, and simultaneously study the migration movement mechanism of the steam bubble 30 in the transparent liquid and the non-transparent liquid; since the high-speed camera 11 is aimed at the transparent test tube 10, the visualization of the entire movement process of the bubble 30 in the transparent flowing liquid can be realized, and the migration characteristics of the bubble 30 in the transparent flowing liquid can be directly detected and mastered; since the non-transparent test tube 20 is equipped with the external ultrasonic Doppler probe 7, the internal ultrasonic Doppler probe 6 and the cavitation probe 21, the rising speed, movement trajectory and diameter of the bubble 30 can be detected, the movement process of the bubble 30 in the non-transparent liquid can be visualized, and the migration characteristics of the bubble 30 in the non-transparent flowing liquid can be detected and mastered; because the centrifugal pump 41, the electromagnetic pump 51, the first heating device 42, the second heating device 52, the first auxiliary heating device 43, the second auxiliary heating device 53 and the electromagnetic valve 38 are all connected to the auxiliary system 8 and the terminal, the liquid temperature, liquid speed and the diameter of the bubble 30 can be conveniently adjusted, thereby covering most of the parameters under the heat transfer tube rupture accident of the lead-based fast reactor steam generator, so as to fully master the migration law of the bubble 30 under the condition of the heat transfer tube rupture accident.

[0068] It should be pointed out that the connection method of the transparent experimental test mechanism 1 and the non-transparent experimental test mechanism 2 is not limited to the method of the first embodiment. Those skilled in the art can set the connection method of the transparent experimental test mechanism 1 and the non-transparent experimental test mechanism 2 according to actual needs. For example, the transparent experimental test mechanism 1 is connected in an experimental loop. After the transparent experimental test is completed, the transparent experimental test mechanism 1 in the experimental loop is replaced with the non-transparent experimental test mechanism 2, and then the non-transparent experimental test is carried out, that is, connected in a detachable manner. This embodiment is also an optional implementation method, which will be described in detail using the second embodiment below.

[0069] The second embodiment of the experimental system for measuring the migration characteristics of bubbles 30 in transparent and non-transparent liquids of the present invention is as follows: Figure 2 and Figure 3 As shown, the technical features of its transparent experimental test mechanism 1, non-transparent experimental test mechanism 2, first circulation mechanism 4 and second circulation mechanism 5 are consistent with those of the first embodiment, the difference is that the experimental test mechanism and the circulation mechanism can be detachably replaced according to the experimental conditions; that is, when one condition is a transparent liquid experiment, the transparent experimental test mechanism 1 can be detachably connected to the bubble injection mechanism 3 and the first circulation mechanism 4, and when the other condition is a non-transparent liquid experiment, the non-transparent experimental test mechanism 2 can be detachably connected to the bubble injection mechanism 3 and the second circulation mechanism 5.

[0070] by Figure 2 or Figure 3For example, at this time, the bubble injection mechanism 3 includes a high-pressure gas cylinder 31, a gas storage tank 32, a one-way valve 33, an air pipe 35, and a bubble eruption hole 36; the pipeline of the high-pressure gas cylinder 31 is connected to the gas storage tank 32, the first solenoid valve 380 and the pressure reducing valve 37, the pipeline of the gas storage tank 32 is connected to the one-way valve 33 and the second solenoid valve 381, the pipeline of the one-way valve 33 is connected to the air pipe 35, the pipeline of the air pipe 35 is connected to the bubble eruption hole 36, and the bubble eruption hole 36 is detachably connected to the transparent test tube 10.

[0071] by Figure 2 For example, when the transparent liquid experiment is started, the transparent experiment test mechanism 1 is detachably connected to the first circulation mechanism 4 and the bubble 30 injection machine; the specific detachable connection of the transparent experiment test mechanism 1 pipeline connecting the bubble injection mechanism 3 is a rotating connection, and the tube wall of the transparent test tube 10 of the transparent experiment test mechanism 1 is provided with a threaded hole, which is threadedly connected to the bubble eruption hole 36; the specific detachable connection of the transparent experiment test mechanism 1 pipeline connecting the first circulation mechanism 4 is a pipeline connector connection, and the connector is put on the two ends of the pipes to be connected, and the side bolts are tightened, so that the locking teeth bite the surface of the pipe end to achieve a limit fixation, and the sealing sleeve is tightly attached to the pipe to achieve a locking state of a firmly sealed connection.

[0072] by Figure 3 For example, after completing the transparent liquid experiment, when starting the non-transparent experiment, the non-transparent experiment test mechanism 2 is detachably connected to the bubble injection mechanism 3 and the second circulation mechanism 5. The specific detachable connection of the pipeline of the non-transparent experiment test mechanism 2 connecting the bubble injection mechanism 3 is a rotating connection, and the wall of the non-transparent test tube 20 of the non-transparent experiment test mechanism 2 is provided with a threaded hole, which is threadedly connected to the bubble ejection hole 36; the specific detachable connection of the pipeline of the non-transparent experiment test mechanism 2 connecting the first circulation mechanism 4 is a pipeline connector connection, and the connector is put on the two ends of the pipes to be connected, and the side bolts are tightened, so that the latch teeth bite the surface of the pipe end to achieve limit fixation, and the sealing sleeve is tightly attached to the pipe to achieve a locking state of a sealed and firmly connected connection.

[0073] The following will describe the specific method steps of the migration characteristic experiment of transparent liquid and non-transparent liquid bubble 30 respectively:

[0074] The following is a specific method for a transparent liquid bubble 30 migration experiment using room temperature water 10a as an example:

[0075] S1, experiment preparation stage, install the experimental equipment, adjust various valves, put a proper amount of water 10a into the first storage tank 40, and start the first heating coil through the control terminal 9 to heat the room temperature water 10a to the specified temperature;

[0076] S2, preheating the circuit, starting the centrifugal pump 41 in the circuit, setting the liquid flow rate of the water 10a so that the water 10a fills the entire circuit, and running it for a period of time to keep the flow rate stable, and at the same time adjusting the first auxiliary heating device 43 in the circuit so that the temperature of the water 10a in the entire circuit remains constant;

[0077] S3, calibrate the ultrasonic Doppler velocimeter, adjust the high-speed camera 11, set the flow rate on the gas mass flow controller, open the high-pressure gas cylinder 31, adjust the pressure reducing valve 37, and open the second solenoid valve 381 after the pressure in the gas storage tank 32 reaches the target value, and continuously inject the argon gas in the gas storage tank 32 into the nozzle at the set flow rate and pressure to generate a single bubble 30. After the bubble 30 is released stably, start the data acquisition and monitoring system to record data;

[0078] S4, during the movement of a single bubble 30, the velocity and position of the bubble 30 are measured in real time by the first internal ultrasonic Doppler probe 6 above the pipe, so as to obtain the movement velocity of the bubble 30. When the bubble 30 reaches the terminal velocity, the velocity, position and final width of the bubble 30 in the horizontal direction are measured by the first external ultrasonic Doppler probes 7 on both sides of the transparent test tube 10;

[0079] S5, the acquisition line module 81 transmits the collected experimental data to the data acquisition module 82, and the data acquisition module 82 transmits it to the control terminal 9 for the technicians to study;

[0080] S6, after 100 bubbles 30 are generated and measured repeatedly in each set of experiments, nozzles with different calibers are replaced to generate bubbles 30 with different equivalent diameters, and the above measurements are repeated;

[0081] S7, after all experiments are completed, the experimental data are sorted out, and the influence of various parameters on the buoyancy characteristics of the bubble 30 is summarized.

[0082] The following is a specific method for the non-transparent liquid bubble 30 migration experiment using lead and bismuth as examples:

[0083] S1, experimental preparation stage, the experimental equipment is installed, various valves are adjusted, the circuit is filled with inert gas, and then a proper amount of lead and bismuth is put into the lead-bismuth storage tank, and the second heating device 52 is started by the control terminal 9 to melt the lead and bismuth into a liquid state and heat it to a specified temperature;

[0084] S2, preheating the circuit, starting the electromagnetic pump 51 in the circuit, setting the flow rate of the liquid lead-bismuth 11a so that the liquid lead-bismuth 11a fills the entire circuit, and running for a period of time to keep the flow rate stable, while adjusting the second auxiliary heating device 53 in the circuit to keep the lead-bismuth temperature in the entire circuit constant;

[0085] S3, calibrate the ultrasonic Doppler velocimeter, adjust the cavitation probe 21, set the flow rate on the gas mass flow controller, open the high-pressure gas cylinder 31, adjust the pressure reducing valve 37, and open the second solenoid valve 381 after the pressure in the gas storage tank 32 reaches the target value, and continuously inject the argon gas in the gas storage tank 32 into the nozzle at the set flow rate and pressure to generate a single bubble 30. After the release of the bubble 30 is stable, start the data acquisition and monitoring system to record data;

[0086] S4, during the movement of a single bubble 30, the speed and position of the bubble 30 are measured in real time by the ultra-high temperature waveguide probe 61 above the pipe, so as to obtain the movement speed of the bubble 30. When the bubble 30 reaches the terminal speed, the second external ultrasonic Doppler probe 7 on both sides of the non-transparent test tube 20 measures the speed, position and final width of the bubble 30 in the horizontal direction;

[0087] S5, the acquisition line module 81 transmits the collected experimental data to the data acquisition module 82, and the data acquisition module 82 transmits it to the control terminal 9 for the technicians to study;

[0088] S6, after 100 bubbles 30 are generated and measured repeatedly in each set of experiments, nozzles with different calibers are replaced to generate bubbles 30 with different equivalent diameters, and the above measurements are repeated;

[0089] S7, after all experiments are completed, the experimental data are sorted out, and the influence of various parameters on the buoyancy characteristics of the bubble 30 is summarized.

[0090] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An experimental system for measuring the migration characteristics of bubbles in transparent and non-transparent liquids, characterized in that It includes a transparent experimental test mechanism, a non-transparent experimental test mechanism, a bubble injection mechanism, a first circulation mechanism, a second circulation mechanism, an internal ultrasonic Doppler probe and an external ultrasonic Doppler probe; The transparent experimental testing mechanism comprises a transparent test tube and a high-speed camera; the transparent test tube is connected to the first circulation mechanism to form a circulation loop; the shooting area of ​​the high-speed camera is aimed at the transparent test tube; The non-transparent experimental testing mechanism comprises a non-transparent testing tube and a cavitation probe; the non-transparent testing tube is connected to the second circulation mechanism to form a circulation loop; the monitoring part of the cavitation probe is placed in the non-transparent testing tube; The plurality of internal ultrasonic Doppler probes are respectively arranged inside the transparent test tube and the non-transparent test tube; The plurality of external ultrasonic Doppler probes are respectively arranged outside the transparent test tube and the non-transparent test tube; The bubble injection mechanism is connected to the transparent test tube and the non-transparent test tube respectively; The transparent test tube is installed vertically; A first pressure relief installation port is provided on the top of the transparent test tube; a first internal ultrasonic Doppler probe is fixedly installed on the upper part of the transparent test tube; The transparent test tube is provided with a plurality of first temperature sensors and a plurality of first pressure sensors; The first circulation mechanism includes a first storage tank and a centrifugal pump; The bottom pipeline of the first storage tank is connected to the bottom of the transparent test tube, the bottom pipeline of the first storage tank is connected to the centrifugal pump, and the centrifugal pump pipeline is connected to the top of the transparent test tube; The first circulation mechanism also includes a first heating device, a first auxiliary heating device and a first circulation pipeline; The first storage tank is provided with a third temperature sensor; the first heating device is installed on the outer wall of the first storage tank; The first auxiliary heating device is installed on the outer wall of the first circulation pipeline; The non-transparent test tube is installed vertically; The top of the non-transparent test tube is provided with a second pressure relief installation port; the bottom of the non-transparent test tube is provided with a first drainage installation port; and a second internal ultrasonic Doppler probe is fixedly installed on the upper part of the non-transparent test tube; The wall of the non-transparent test tube has two rows of probe holes symmetrical along the vertical axis, and the probe holes are connected to the cavitation probes; The non-transparent test tube is provided with a plurality of second temperature sensors and a plurality of second pressure sensors; The second circulation mechanism includes a second storage tank and an electromagnetic pump; The bottom pipeline of the second storage tank is connected to the bottom of the non-transparent test tube, the bottom pipeline of the second storage tank is connected to the electromagnetic pump, and the electromagnetic pump pipeline is connected to the top of the non-transparent test tube; The second circulation mechanism further includes a second heating device, a second auxiliary heating device and a second circulation pipeline; The second storage tank is provided with a fourth pressure sensor and a fourth temperature sensor, and the second storage tank is provided with a gas access port; the outer surfaces of the second storage tank and the connected pipeline are covered with a high-temperature insulation layer; the outer wall of the second storage tank is installed with the second heating device; The second auxiliary heating device is installed on the outer wall of the second circulation pipeline; The experimental system for measuring the migration characteristics of bubbles in transparent and non-transparent liquids also includes an auxiliary system and a control terminal; the centrifugal pump, the electromagnetic pump, the first heating device, the second heating device, the first auxiliary heating device and the second auxiliary heating device are all connected to the auxiliary system and the control terminal for adjusting the liquid temperature and liquid speed.

2. The experimental system for measuring the migration characteristics of bubbles in transparent and non-transparent liquids according to claim 1, characterized in that: The plurality of external ultrasonic Doppler probes are respectively installed in two rows symmetrically along the axis of the transparent test tube and the non-transparent test tube; The ultrasonic Doppler probe is fixedly connected to the pipe wall via a coupling agent.

3. The experimental system for measuring the migration characteristics of bubbles in transparent and non-transparent liquids according to claim 1, characterized in that: The bubble injection mechanism comprises a high-pressure gas cylinder, a gas storage tank, a one-way valve, a three-way pipe, a first gas pipe, a second gas pipe, a first bubble ejection hole and a second bubble ejection hole; The high-pressure gas cylinder pipeline is connected to the gas storage tank, the gas storage tank pipeline is connected to the one-way valve, and the one-way valve pipeline is connected to one end of the three-way pipe; The other end of the three-way pipe is connected to the first air pipe, the first air pipe is connected to the first bubble eruption hole, and the first bubble eruption hole is threadedly connected to the transparent test tube; The last end of the three-way pipe is connected to the second air pipe, the second air pipe is connected to the second bubble eruption hole, and the second bubble eruption hole is threadedly connected to the non-transparent test tube.

4. The experimental system for measuring the migration characteristics of bubbles in transparent and non-transparent liquids according to claim 1, characterized in that: The auxiliary system includes a power supply module, an acquisition circuit module, a data acquisition module, a control module and a heating and temperature control module; The power supply module is electrically connected to the data acquisition module, the control module and the control terminal; The acquisition circuit module signals are connected to a plurality of the temperature sensors, a plurality of the pressure sensors, a plurality of the ultrasonic Doppler probes and a plurality of the cavitation probes; The data acquisition module is electrically connected to the acquisition circuit module and the control terminal; The control module includes a solenoid valve control circuit and a drive pump control circuit; The heating temperature control module is electrically connected to the control terminal; The control terminal is a computer.

Images