Device and method for generating multiple horizontal bubbles

Abstract

The invention provides a device and method for generating multiple horizontal bubbles, belongs to the technical field of liquid metal experiments, and is used for improving the size consistency and release synchronism of the bubbles. The device comprises a pressure controller, a function generator, a bubble generator and a liquid metal container. Each group of bubble generators comprises a power amplifier, a loudspeaker, a gas tank, a one-way valve and a needle head; the input end of the power amplifier is connected with the function generator, the output end of the power amplifier drives the loudspeaker, the loudspeaker is arranged in the gas tank, the tail end of the loudspeaker faces the tail end of the gas tank, and the head end of the loudspeaker faces the head end of the gas tank; the head end and the tail end of the gas tank are communicated with the pressure controller, and the one-way valve exists between the head end and the pressure controller; the head end of the gas tank is connected to the bottom of the liquid metal container through a needle, and sound pulses are transmitted into the liquid metal through the needle. The device is combined with the method to realize accurate and synchronous generation of a plurality of bubbles through parallel operation, so that the controllability of an experiment is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid metal experiments, and in particular relates to a device and a method for generating horizontal multiple bubbles. Background Art

[0002] In the field of physics research, the dynamic behavior of bubbles in liquid environments, especially the motion characteristics of double / multiple bubbles in liquid metal, has many engineering significance. In liquid metal environments, the size distribution, deformation, and lift characteristics of bubbles are quite different from those in water.

[0003] Studying the movement characteristics of bubbles in liquid metal will not only help reveal the dynamic behavior of bubbles under these special conditions, but also provide important theoretical support and practical guidance for the design and optimization of industrial equipment and process improvements in other related fields.

[0004] In the prior art, the greatest difficulty in studying the motion characteristics of multiple bubbles is to achieve the synchronous release of multiple bubbles horizontally and obtain bubbles of the same size and released synchronously. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a device and method for generating horizontal multiple bubbles, so as to improve the size consistency and release synchronization of the bubbles when studying the movement characteristics of multiple bubbles in liquid metal.

[0006] To achieve the above objectives and other related objectives, the present invention provides a device and method for generating horizontal multiple bubbles.

[0007] Among them, the device for generating horizontal multiple bubbles: It includes a pressure controller, a function generator, a bubble generator and a liquid metal container; The bubble generators are at least two groups, and each group of the bubble generators includes: Power amplifiers, speakers, gas tanks, needles, gas tubes and one-way valves; The input end of the power amplifier is connected to the function generator, and the output end of the power amplifier drives the speaker, which is placed in the gas tank, with the tail end of the speaker facing the tail end of the gas tank and the head end of the speaker facing the head end of the gas tank; The head end and tail end of the gas tank are connected to the pressure controller, wherein the one-way valve ensures the one-way transport of gas from the pressure controller to the head end of the gas tank, and the head end of the gas tank is connected to the bottom of the liquid metal container through a needle; The needles of each group of bubble generators are arranged side by side at the bottom of the liquid metal container.

[0008] Optionally, the head end of the gas cylinder and the needle are connected via an air pipe, and the air pipes used by each group of the bubble generators are of the same length.

[0009] Optionally, the liquid metal container contains liquid metal, and the liquid metal container is placed in a magnetic field.

[0010] Optionally, a one-dimensional linear array UPA probe is also arranged outside the liquid metal container.

[0011] Optionally, the needle is arranged at the bottom of the liquid metal container and the end thereof is higher than the bottom surface of the container.

[0012] Optionally, the relative axial center distance between two adjacent needles is between 1-2.5, and the relative axial center distance is the ratio of the axial center distance of the needle to the needle diameter.

[0013] Optionally, the head end of the gas tank is also connected to the pressure controller, and a one-way valve is provided in the circuit, and the flow direction is one-way flow from the pressure controller to the gas tank.

[0014] The method for generating multiple horizontal bubbles adopts the device for generating multiple horizontal bubbles as described above, and the bubble generating step comprises: The pressure controller adjusts the air pressure in each of the gas tanks and keeps the air pressure consistent; The function generator sends out a waveform, which is amplified by each power amplifier and drives the corresponding loudspeaker to vibrate; The air flow disturbance generated by the vibration of the speaker is transmitted to the needle along the trachea and generates bubbles at the tip of the needle.

[0015] Optionally, a debugging step is further included, the debugging step being prior to the bubble generating step, the debugging step comprising: The liquid metal container is filled with liquid metal (such as gallium indium tin alloy); Generating and observing sub-step: generating bubbles according to the bubble generating step, and observing the size and time difference between the bubbles generated by each of the needles; Adjustment sub-step: adjusting the amplification parameters of the power amplifiers in the corresponding bubble generators according to the observation results; The generating and observing sub-step and the adjusting sub-step are repeated until the size and time of the bubbles generated by each of the bubble generators meet the requirements of the control mode.

[0016] Optionally, the control mode requirements include synchronous mode and asynchronous mode; The synchronization mode means that the size and time of the bubbles generated by each needle are made consistent by adjusting the amplification parameters of each power amplifier; The asynchronous mode means that the size and time of the bubbles generated by each needle head have set differences by adjusting the amplification parameters of each power amplifier.

[0017] As described above, the device and method for generating horizontal multiple bubbles of the present invention have at least the following beneficial effects: First, by integrating key components such as pressure controller, function generator, bubble generator and liquid metal container, the device achieves the precise and synchronous generation of multiple bubbles, greatly improving the controllability of the experiment and providing strong technical support for in-depth research on the two-phase flow characteristics of liquid metal.

[0018] Secondly, the design of the device is flexible and scalable. It is not only suitable for liquid metal research, but also can be widely used in many fields such as hydrodynamic experiments, showing a wide range of applicability. By adjusting the signal of the function generator, the frequency, size and position of the bubble generation can be precisely controlled to meet the needs of different types of experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is an overall schematic diagram of the present invention.

[0020] Figure 2 Schematic diagram showing the trajectory of rising bubbles measured by the ultrasonic phased array system.

[0021] Figure 3 Shown is a schematic diagram of a double bubble generating device in the prior art.

[0023] Among them: pressure controller 10, function generator 11, power amplifier 121, speaker 122, gas tank 123, needle 124, air pipe 125, one-way valve 126, liquid metal container 13. DETAILED DESCRIPTION

[0024] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0025] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0026] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0027] For this example, please refer to Figure 1 The embodiment of the device for generating horizontal multiple bubbles provided by the present invention comprises a pressure controller 10, a function generator 11, a bubble generator and a liquid metal container 13. Among them, the pressure controller 10 is a pressure stabilizing device that can output a stable air pressure. The pressure controller has various forms, such as an air pump equipped with a pressure control valve. The function generator 11 is a multi-waveform signal source that can generate waveform signals such as sine waves and square waves. Some high-end oscilloscopes can also generate signal sources of various waveforms and can be used as function generators. There are at least two groups of bubble generators, each group of bubble generators includes: a power amplifier 121, a speaker 122, a gas tank 123, a needle 124, an air pipe (125) and a one-way valve (126). The power amplifier 121 can amplify the input signal and provide a sufficiently large power to the load. It is widely used in the signal field and belongs to conventional technical means; The input end of the power amplifier 121 is connected to the function generator 11, and the output end of the power amplifier 121 drives the speaker 122. The speaker 122 is placed in the gas tank 123, and the tail end of the speaker 122 faces the tail end of the gas tank 123, and the head end of the speaker 122 faces the head end of the gas tank 123. In each group of bubble generators, the installation state of the speaker 122 in the gas tank 123 should be consistent; The head end and tail end of the gas tank 123 are connected to the pressure controller 10, wherein the one-way valve 126 ensures that the gas is transported unidirectionally from the pressure controller 10 to the head end of the gas tank 123, and the head end of the gas tank 123 is connected to the bottom of the liquid metal container 13 through the needle 124; the needles 124 of each group of bubble generators are arranged side by side at the bottom of the liquid metal container 13.

[0028] The main working process of the device in the above embodiment is as follows: The air pressure of each gas tank 123 of the multiple groups of bubble generators is regulated by the same pressure controller 10 to keep the air pressure consistent; the signal source of each speaker 122 of the multiple groups of bubble generators is provided by the same function generator 11 to ensure the consistency of the signal timing; however, the signal source of each speaker 122 is regulated by a different power amplifier 121, so independent control can be achieved.

[0029] When double / multiple bubbles need to be generated (depending on the number of bubble generator groups), the pressure controller 10 first turns on and adjusts the air pressure of each gas tank 123 to achieve a stable and identical pressure; then adjusts the parameters of each power amplifier 121, for example, adjusts the amplification parameters to be the same; then when the function generator 11 sends out a waveform signal, the same signal is amplified by different power amplifiers 121, and then drives the speaker 122 to vibrate, and the vibration of the speaker 122 drives the disturbance of the air pressure in the gas tank 123, thereby forming bubbles at the needle tip, and the bubbles, under the action of buoyancy, break away from the needle tip and rise in the liquid metal container 13. Since the air pressure of each gas tank 123 is stable and the same, and the signal source of each speaker 122 is the same, the time for bubbles to be generated on different needle tips is the same, and by adjusting the parameters of each power amplifier 121, the size of the bubbles on each needle tip can be adjusted to be the same or different.

[0030] By integrating a pressure controller, a function generator, multiple sets of bubble generators and a liquid metal container, the precise generation and control of horizontal multiple bubbles is achieved. Its significant beneficial effect is that it can ensure the synchronous release of multiple bubbles in the liquid metal, greatly improving the time consistency of bubble generation; at the same time, by independently adjusting the parameters of each power amplifier, the size of the bubble can be flexibly controlled, and the controllability of the bubble size difference can be achieved. The parameters of the power amplifier can be adjusted to compensate for the differences in the production and manufacturing of components such as speakers, so that the generation time and size of the bubbles are almost the same; the parameters of the power amplifier can also be adjusted to simultaneously generate bubbles with set size differences.

[0031] In this embodiment, the head end of the gas tank 123 and the needle 124 are connected by an air pipe 125, and the air pipe 125 used by each group of bubble generators is the same length. The smaller the difference in the length of the air pipe, the shorter the time it takes to generate bubbles. The two groups of power amplifiers are connected in parallel, respectively connected to the speakers in the two gas tanks, and controlled by the same function generator. The two gas tanks are connected in parallel, and the pressure is kept stable by the same pressure controller. The time difference from the function generator to the two parallel power amplifiers and then to the two speakers is negligible, so the two speakers can generate pulses perfectly synchronously. According to the propagation time of the speed of sound, even if the difference in the length of the air pipe at the outlet is 1 cm, the time difference for the pulse to reach the needle will be less than 3e-5 seconds, which is negligible. Therefore, after ensuring that the length of the air pipe connecting the gas tank to the needle is consistent, two synchronous but different intensity disturbances will produce a group of horizontal double bubbles in the liquid metal, such as Figure 1 shown. Figure 2 The measured trajectories of two bubbles colliding and rising in GaInSn (gallium indium tin alloy, synthesized from low-melting-point metal elements such as gallium (Ga), indium (In), and tin (Sn)).

[0032] The core advantage of the parallel pulse method is that each bubble in the double bubble can be adjusted individually. Even if the two sets of devices and control parameters in parallel are completely consistent, inconsistent bubble sizes may still occur. At this time, you only need to adjust the two power amplifiers separately and fine-tune the vibration intensity of the speaker to control the size of the two bubbles separately. This method solves the problem of inconsistent bubble synchronization generated in the prior art, and overcomes the difficulty of uneven bubble size generated. In the experiment, the problem of oxide impurity blockage can be solved by increasing the pulse intensity. Therefore, this parallel pulse method has significant advantages for studying the motion modes of horizontal double bubbles in liquid metal. In addition, due to its convenience in adjusting the bubble size, this method can also be used for the study of the motion modes of double bubbles of asymmetric size.

[0033] The problem of oxide impurities blocking mentioned above refers to: in the bubble generating device of the prior art, after a long release cycle, one bubble in the next set of double bubbles may be missing, and the size of the other bubble generated normally may also change. This is because the two needles of the prior art are connected by the same air pipe. Figure 3As shown, the tail ends of the two hollow rods 91 (equivalent to the needles 124) are connected to the same air supply pipe 92 (equivalent to the air pipe 125). When the air supply pipe 92 generates airflow disturbance, bubbles 910 are formed at the end of the hollow rod 91. Since the inner diameter of the hollow rod 91 / needle 124 is extremely small, oxide impurities may block one of the needles, resulting in different ventilation capacities of the two needles. When the pulse impacts the impurities in the needle, it will cause uneven distribution of gas in the two needles or even blockage of one of them, making it difficult to ensure that the needle can stably generate bubbles. Even if there is no blockage, the size of the bubbles generated will change due to the redistribution of the pulse energy, and it is difficult to maintain consistency. In the embodiment of the present application, the two needles are driven independently, and the pulse can impact the impurities in the needle, but the pulse energy will not be redistributed, ensuring that each needle can stably generate bubbles and the bubble size remains consistent.

[0034] In this embodiment, liquid metal is contained in the liquid metal container 13, and the liquid metal container 13 is placed in a magnetic field 14. The direction and strength of the magnetic field can be varied, so as to study the influence of different magnetic field conditions on the movement characteristics of bubbles in the metal liquid. First, the magnetic field can have a significant effect on the behavior of bubbles in the liquid metal and affect the characteristics of the nonlinear vibration of the bubbles, which is crucial in engineering applications. By adjusting the intensity and direction of the magnetic field, the influence on the movement of bubbles in the liquid metal can be achieved, thereby meeting the needs of specific practical application scenarios.

[0035] Secondly, under the action of the magnetic field, the gas column in the liquid metal is broken, forming bubble flow, and this change helps to improve the heat transfer characteristics of the liquid metal. As the magnetic field strength increases, the separation position and speed of the bubbles change, which in turn affects the heat transfer efficiency of the liquid metal. Although the average heat transfer coefficient may decrease, the two-phase flow can significantly reduce the pressure drop caused by the MHD effect and improve the thermal performance index in the channel.

[0036] By placing the liquid metal container 13 in the magnetic field 14 for research, the influence of the magnetic field on the behavior of bubbles can be analyzed, and relevant characteristics can be used to provide new ideas and methods for engineering applications in related fields.

[0037] In this embodiment, an ultrasonic phased array system formed by a one-dimensional linear array UPA probe is also provided outside the liquid metal container 13. The one-dimensional linear array UPA probe is an ultrasonic detection device that uses ultrasonic pulses to scan the inside of the liquid metal, and can observe and record the movement trajectory and state of the bubbles in real time. In the case where the liquid metal is opaque, the one-dimensional linear array UPA probe becomes an important tool for observing the behavior of bubbles. By setting up a double bubble generation system and a UPA system, the movement law of double bubbles in liquid metal can be deeply studied, providing experimental data for understanding the bubble interaction mechanism. In addition, the probe also has the advantage of non-contact measurement, which will not interfere with the movement of liquid metal and bubbles, ensuring the accuracy of the experimental results. .

[0038] In this embodiment, the needle 124 is disposed at the bottom of the liquid metal container 13 and the end thereof is higher than the bottom surface of the container. First, it can effectively prevent the bubbles from directly touching the bottom during the formation process, thereby preventing the bubbles from being deformed or broken due to the resistance of the bottom surface, and ensuring the integrity and stability of the bubbles. Second, such a design allows the bubbles to be more smoothly separated from the needle, reduces the adhesion between the bubbles and the needle, and improves the efficiency and consistency of bubble generation. In this embodiment, the head end of the gas tank 123 is also connected to the pressure controller 10, and a one-way valve 126 is provided in the circuit, and the flow direction is one-way flow from the pressure controller 10 to the gas tank 123. The setting of the one-way valve effectively prevents the reverse flow of the air flow, thereby reducing the potential interference of the air pressure source on the disturbed air flow and improving the accuracy and controllability of bubble generation. This improvement not only helps the formation and consistency of bubbles in liquid metal, but also provides more accurate and reliable experimental conditions for subsequent bubble behavior research, especially the stability and consistency during the continuous generation of bubbles.

[0039] This embodiment is a method for generating multiple horizontal bubbles, using the device for generating multiple horizontal bubbles as described above, and the bubble generation step includes: The pressure controller 10 adjusts the gas pressure in each gas tank 123 and keeps the gas pressure stable and consistent; The function generator 11 emits a waveform, which is amplified by each power amplifier 121 and drives the corresponding loudspeaker 122 to vibrate; The air flow disturbance generated by the vibration of the speaker 122 is transmitted to the needle 124 along the trachea 125 and generates bubbles at the tip of the needle 124 .

[0040] The method for generating horizontal multiple bubbles in this embodiment has beneficial effects mainly in the following two aspects.

[0041] Efficient and synchronous bubble generation: The pressure controller is used to accurately adjust and maintain the stable and consistent gas pressure in each gas tank, and the synergy of the function generator and the power amplifier is combined to achieve the precise and synchronous generation of multiple bubbles in the liquid metal two-phase flow experiment. This method not only improves the experimental efficiency, but also ensures the consistency and controllability of bubble generation, providing strong support for in-depth research on the characteristics of liquid metal two-phase flow; Wide applicability: This method is not limited to liquid metal research. Its flexibility and scalability enable it to be widely used in other fields, such as hydrodynamic experiments. By adjusting the device parameters, multiple synchronous and independently controllable bubbles can be generated to meet the needs of different types of experiments.

[0042] Furthermore, a debugging step is included, which is prior to the bubble generation step, and the debugging step includes: The liquid metal container 13 is filled with liquid metal (such as gallium indium tin alloy). In order to facilitate observation of the generation of bubbles in the liquid metal container 13 during the debugging process, a transparent liquid may be used for testing first and then liquid metal (such as gallium indium tin alloy) may be used for formal debugging. Generate and observe sub-step: generate bubbles according to the bubble generation step, and observe the size and time between the bubbles generated by each needle 124; Adjustment sub-step: according to the observation results, adjust the amplification parameters of the power amplifier 121 in each bubble generator; Repeat the generation and observation substeps and the adjustment substeps until the size and time of bubbles generated by each bubble generator meet the requirements of the control mode.

[0043] After adding the debugging step, the beneficial effects of the method for generating horizontal multiple bubbles in this embodiment are further enhanced, mainly in the following aspects: Although differences are unavoidable in the manufacturing process of parts, even parts from the same batch may not be able to directly produce completely consistent bubbles. However, by introducing a debugging step, we can effectively solve this problem. During the debugging process, a transparent liquid is first filled into the liquid metal container to replace the liquid metal. This not only makes it easier to observe the generation of bubbles, but also allows preliminary debugging without affecting the essence of the bubble behavior. Subsequently, bubbles are generated according to the bubble generation steps, and the size differences between the bubbles generated by each needle are carefully observed.

[0044] Based on the observed results, we can adjust the amplification parameters of the power amplifiers in the corresponding bubble generators in a targeted manner. By repeating the steps of generation, observation, and adjustment, we can gradually optimize the performance of each bubble generator until the bubbles they generate meet the requirements of the control mode in terms of size and time, that is, to achieve complete consistency of bubbles within an acceptable range.

[0045] This debugging process not only improves the precision and controllability of bubble generation, but also ensures the accuracy and reliability of experimental results. It enables us to fully utilize the performance of existing parts and components and compensate for minor differences in manufacturing by fine-tuning parameters, thereby achieving optimization and unification of bubble generation.

[0046] Furthermore, the control mode requirements include synchronous mode and asynchronous mode; The synchronization mode means that the size and time of the bubbles generated by each needle 124 are made consistent by adjusting the amplification parameters of each power amplifier 121; The asynchronous mode means that the size and time of the bubbles generated by each needle 124 have set differences by adjusting the amplification parameters of each power amplifier 121 .

[0047] After introducing the concepts of synchronous mode and asynchronous mode, the beneficial effects of the method for generating horizontal multiple bubbles in this embodiment can be further described as follows: The beneficial effect of the synchronization mode: by precisely adjusting the amplification parameters of each power amplifier, the bubbles generated by each needle are made highly consistent in size, that is, the synchronization mode is achieved. This mode not only ensures the stability and repeatability of the experimental conditions, but also greatly improves the accuracy and reliability of the experimental results. In scientific research fields such as liquid metal two-phase flow experiments, the bubbles generated synchronously can more accurately simulate and reflect the actual physical process, providing strong support for in-depth research.

[0048] Beneficial effects of asynchronous mode: The asynchronous mode adjusts the parameters of the power amplifier so that the bubbles generated by each needle have certain, set differences in size. This mode provides more flexibility and controllability for the experiment, allowing researchers to simulate and study the impact of different bubble behaviors on the system according to specific experimental needs. For example, in hydrodynamic experiments, by setting different bubble sizes and generation times, complex physical phenomena such as the interaction between bubbles and the impact of bubbles on the surrounding flow field can be studied. The introduction of the asynchronous mode not only broadens the scope of experimental research, but also improves the pertinence and practicality of the experiment.

[0049] In the above embodiment, in order to accurately control the time of bubble generation, a delay device can be added to each group of bubble generators, and the delay device can be connected in series before the power amplifier in each group of bubble generators, that is, it is set between the function generator 11 and the power amplifier 121. The function generator 11 sends a signal, which is delayed by each delay device, amplified by each power amplifier 121, and then drives the speaker 122 to vibrate, thereby disturbing the gas in the gas tank 123 to form bubbles. The delay device and power amplifier 121 of each bubble generator can be controlled independently, so that the time and size of the bubble generated by each needle can be independently and accurately controlled. Even if there are errors that cannot be eliminated in the production and manufacturing of each component, it is difficult to ensure complete consistency, and the adjustment of each group of delay devices and power amplifiers 121 can also be used to achieve double / multiple bubbles with highly consistent size and time.

[0050] In summary, the present invention effectively overcomes various shortcomings in the prior art, can produce beneficial technical effects, and has significant progress.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A device for generating horizontal multiple bubbles, characterized in that: It comprises a pressure controller (10), a function generator (11), a bubble generator and a liquid metal container (13); The bubble generators are at least two groups, and each group of the bubble generators includes: A power amplifier (121), a speaker (122), a gas tank (123), a needle (124), a gas tube (125) and a one-way valve (126); The input end of the power amplifier (121) is connected to the function generator (11), and the output end of the power amplifier (121) drives the speaker (122); the speaker (122) is placed in the gas tank (123), the rear end of the speaker (122) faces the rear end of the gas tank (123), and the front end of the speaker (122) faces the front end of the gas tank (123); The head end and the tail end of the gas tank (123) are connected to the pressure controller (10) via a one-way valve (126), and the gas is transmitted from the pressure controller (10) to the head end of the gas tank (123) in a one-way manner. The head end of the gas tank (123) is connected to the bottom of the liquid metal container (13) via a needle (124); The needles (124) of each group of bubble generators are arranged side by side at the bottom of the liquid metal container (13).

2. The device for generating horizontal multiple bubbles as claimed in claim 1, characterized in that: The head end of the gas cylinder (123) and the needle (124) are connected via an air pipe (125), and the air pipes (125) used in each group of bubble generators are of the same length.

3. The device for generating horizontal multiple bubbles as claimed in claim 1, characterized in that: The liquid metal container (13) contains liquid metal, and the liquid metal container (13) is placed in a magnetic field (14).

4. The device for generating horizontal multiple bubbles as claimed in claim 1, characterized in that: A one-dimensional linear array UPA probe is also arranged outside the liquid metal container (13).

5. The device for generating horizontal multiple bubbles as claimed in claim 1, characterized in that: The needle (124) is arranged at the bottom of the liquid metal container (13) and the end thereof is higher than the bottom surface of the container.

6. The device for generating horizontal multiple bubbles as claimed in claim 5, characterized in that: The relative axial center distance between two adjacent needles (124) is between 1 and 2.5, and the relative axial center distance is the ratio of the axial center distance of the needles (124) to the diameter of the needles (124).

7. The device for generating horizontal multiple bubbles as claimed in claim 1, characterized in that: The head end of the gas tank (123) is also connected to the pressure controller (10), and a one-way valve (126) is provided in the circuit, and the flow direction is one-way flow from the pressure controller (10) to the gas tank (123).

8. A method for generating horizontal multiple bubbles, characterized in that: Using the device for generating horizontal multiple bubbles as claimed in claim 1, the bubble generating step comprises: The pressure controller (10) adjusts the air pressure in each of the air tanks (123) and keeps the air pressure consistent; The function generator (11) emits a waveform, which is amplified by each of the power amplifiers (121) and drives the corresponding speakers (122) to vibrate; The air flow disturbance generated by the vibration of the speaker (122) is transmitted along the trachea (125) to the needle (124), and bubbles are generated at the tip of the needle (124).

9. The method for generating horizontal multiple bubbles as claimed in claim 8, characterized in that: The debugging step is also included, and the debugging step is prior to the bubble generation step, and the debugging step includes: The liquid metal container (13) is filled with liquid metal; Generating and observing sub-step: generating bubbles according to the bubble generating step, and observing the size and time difference between the bubbles generated by each of the needles (124); Adjustment sub-step: adjusting the amplification parameters of the power amplifier (121) in each of the bubble generators according to the observation results; The generating and observing sub-step and the adjusting sub-step are repeated until the size and time of the bubbles generated by each of the bubble generators meet the requirements of the control mode.

10. The method for generating horizontal multiple bubbles according to claim 9, characterized in that: The control mode requirements include synchronous mode and asynchronous mode; The synchronization mode means that the size and time of the bubbles generated by each of the needles (124) are made consistent by adjusting the amplification parameters of each of the power amplifiers (121); The asynchronous mode means that the size and time of the bubbles generated by each needle (124) have set differences by adjusting the amplification parameters of each power amplifier (121).

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