Valve control flow field distribution measuring device and system

Abstract

The embodiment of the utility model provides a valve control flow field distribution measuring device and system, and relates to the flow field measuring technology, the device comprises at least two fluid unit groups, a main valve, a fluid pipeline, a flow measuring unit group, a camera unit group and a laser unit group; the fluid pipeline comprises a transparent pipeline and a non-transparent pipeline; each fluid unit group comprises a fluid sample container, a fluid meter and a fluid sub-valve, one end of the fluid meter is in pipeline connection with the fluid sample container, and the other end of the fluid meter is in pipeline connection with the fluid sub-valve; the flow measuring unit group is arranged at a preset position of the non-transparent pipeline; the camera unit group is arranged on one side of the transparent pipeline in parallel, and the laser unit group is arranged on the other side of the transparent pipeline in parallel. The multi-phase flow measurement standard device provided by the embodiment of the utility model has the beneficial effects that the application range of the device is widened, and the multi-phase flow fluid distribution measurement accuracy is improved.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of flow field measurement, and in particular to a valve control flow field distribution measurement device and system. Background Art

[0002] Accurately measuring flow field distribution is crucial in numerous industrial and scientific fields. This information is essential for optimizing process flows, improving equipment performance, ensuring safe system operation, and deepening understanding of fluid dynamics phenomena. With the continuous development of modern industry and the deepening of scientific research, increasingly stringent requirements are being placed on the accuracy, reliability, real-time performance, and scope of application of flow field distribution measurements.

[0003] Existing common flow field distribution measurements are all based on the study of two-phase fluid unit groups, which means that when the material state under study is different, the measurement device needs to be reassembled. This type of measurement device is not universal, resulting in low measurement efficiency. Utility Model Content

[0004] The embodiments of the utility model provide a valve control flow field distribution measurement device and system, which can improve the structure of the existing flow field distribution measurement device.

[0005] In the first aspect, an embodiment of the present invention provides a valve-controlled flow field distribution measurement device, comprising: at least two fluid unit groups, a main valve, a fluid pipeline, a flow measurement unit group, a camera unit group and a laser unit group; the fluid pipeline comprises a transparent pipeline and a non-transparent pipeline; wherein each of the fluid unit groups comprises a fluid sample container, a fluid measuring meter and a fluid sub-valve, one end of the fluid measuring meter is connected to the fluid sample container pipeline, and the other end of the fluid measuring meter is connected to the fluid sub-valve pipeline; the fluid sub-valve in each of the fluid unit groups is connected to the input end of the main valve via an output pipeline, and the non-transparent pipeline is arranged at the output end of the main valve; the flow measurement unit group is arranged at a preset position of the non-transparent pipeline; the camera unit group is arranged in parallel on one side of the transparent pipeline, and the laser unit group is arranged in parallel on the other side of the transparent pipeline.

[0006] Optionally, the flow measurement unit group includes a first transducer and a second transducer, and the first transducer and the second transducer are symmetrically arranged; wherein, the first transducer includes a first probe and a second probe that are symmetrically arranged; the second transducer includes a third probe and a fourth probe that are symmetrically arranged; the first probe and the third probe are on one side of the non-transparent pipe, and the second probe and the fourth probe are on the other side of the non-transparent pipe; when the first probe, the second probe, the third probe and the fourth probe are respectively extended into the corresponding pipe side of the non-transparent pipe, they form a preset angle with the corresponding pipe side and extend to a preset position.

[0007] Optionally, the flow measurement unit group includes a transducer excitation unit, an isolation unit, a signal conversion unit and a power supply unit; the power supply unit is respectively connected to the transducer excitation unit, the isolation unit and the signal conversion unit; the input end of the transducer excitation unit is respectively connected to the first probe, the second probe, the third probe and the fourth probe; the output end of the transducer excitation unit includes four output pins, the isolation unit includes four input pins, each of the output pins in the transducer excitation unit is connected to the corresponding input pin in the isolation unit; the output end of the isolation unit is connected to the signal conversion unit.

[0008] Optionally, the signal conversion unit includes a voltage-frequency conversion subunit and a level conversion subunit; the voltage-frequency conversion subunit and the level conversion subunit are connected.

[0009] Optionally, the camera unit group includes a high-speed camera, a guide rail and a fixed column; the fixed column is arranged perpendicular to one side of the transparent pipe; the high-speed camera is arranged in the guide rail on one side of the fixed column, and the guide rail is parallel to the transparent pipe, so that the high-speed camera slides on the guide rail.

[0010] Optionally, the high-speed camera includes a first lens and a second lens, the first lens and the second lens respectively include a preset number of positioning holes, and the positions of the positioning holes in the first lens and the second lens correspond to each other; the positioning holes in the same position in the first lens and the second lens are fixedly connected based on a rigid structure; the number of the rigid structures is less than or equal to the preset number.

[0011] Optionally, the laser unit group includes: a laser and a lifting platform; the laser is mounted on the lifting platform.

[0012] Optionally, at least two of the fluid unit groups include: a liquid unit group and a gas unit group, and / or a solid unit group; wherein the liquid unit group includes a liquid container, a liquid flow meter and a first sub-valve; the gas unit group includes a gas container, a gas flow meter and a second sub-valve; and the solid unit group includes tracer particles, an electronic balance and a third sub-valve.

[0013] Optionally, the device further comprises a separation tank; the separation tank is connected to the end of the transparent pipe.

[0014] In a second aspect, an embodiment of the present invention provides a valve control flow field distribution measurement system, including a valve control flow field distribution measurement device as described in any embodiment of the present invention.

[0015] The valve-controlled flow field distribution measurement device and system provided by an embodiment of the present invention include at least two fluid unit groups, a main valve, a fluid pipeline, a flow measurement unit group, a camera unit group and a laser unit group; the fluid pipeline includes a transparent pipeline and a non-transparent pipeline; wherein each fluid unit group includes a fluid sample container, a fluid meter and a fluid sub-valve, one end of the fluid meter is connected to the fluid sample container pipeline, and the other end of the fluid meter is connected to the fluid sub-valve pipeline; this embodiment provides at least two fluid unit groups, and each unit group includes corresponding fluid sub-valves, so that in actual measurement scenarios, the opening or closing of a corresponding number of fluid sub-valves can be controlled according to actual measurement requirements, thereby achieving the purpose of flow field distribution measurement for multiphase fluid; and in this embodiment, the flow measurement unit group is provided in the non-transparent pipeline, which helps to reduce the measurement interference of light on the flow measurement unit group and improve the measurement accuracy; and finally, the flow field distribution in the transparent pipeline is photographed by the camera unit group and the laser unit group, which helps to subsequently analyze the position images of the tracer particles under the irradiation of multiple laser pulses through a computer system, and then calculate the velocity distribution of the flow field according to the time interval. The standard device for multiphase flow measurement provided in this embodiment has the beneficial effects of expanding the application range of the device and improving the accuracy of multiphase flow fluid distribution measurement.

[0016] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the embodiments of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of a valve control flow field distribution measurement device provided by an embodiment of the utility model;

[0019] Figure 2 This is another structural schematic diagram of a valve control flow field distribution measurement device provided by an embodiment of the present utility model;

[0020] Figure 3 This is a structural diagram of a flow measurement unit group provided by an embodiment of the present utility model;

[0021] Figure 4 This is another structural schematic diagram of a flow measurement unit group provided by an embodiment of the present utility model;

[0022] Figure 5 This is a structural diagram of a fixing method of a high-speed camera provided by an embodiment of the present utility model;

[0023] Figure 6 It is a structural schematic diagram of a valve control flow field distribution measurement system provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0024] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0026] Figure 1The diagram is a schematic diagram of a valve-controlled flow field distribution measurement device provided by an embodiment of the present invention. This embodiment is applicable to measuring the flow velocity distribution within a flow field. The valve-controlled flow field distribution measurement device provided by this embodiment of the present invention includes: at least two fluid unit assemblies 10, a main valve 20, a fluid pipeline (not shown), a flow measurement unit assembly 40, a camera unit assembly 50, and a laser unit assembly 60.

[0027] In this embodiment, the fluid unit group 10 includes at least two. Each fluid unit group 10 can be in a different material state. For example, the composition structure of the two liquid unit groups may include a gas unit group and a liquid unit group, a liquid unit group and a solid unit group, etc.; the composition structure of the three liquid unit groups may include: a gas unit group, a liquid unit group and a solid unit group, etc. Optionally, in this embodiment, the at least two fluid unit groups 10 are not limited to a gas-liquid combination, a liquid-solid combination, and a liquid-gas-solid combination, and may also include two unit groups of the same material state, such as a first fluid unit group 10 and a second fluid unit group 10, the first liquid unit group can be water, the second liquid unit group can be oil, etc. The specific number of components of the fluid unit group 10 and the material state corresponding to each fluid unit group 10 shall be based on actual research needs, and this embodiment does not impose any restrictions here.

[0028] The purpose of setting up at least two fluid unit groups 10 in this embodiment is to provide a standard device for measuring the flow velocity distribution of multiphase flow, so that the standard device provided by this embodiment is suitable for application scenarios of various types of flow field distribution measurements, without the need to improve the device according to the different measured fluids, thereby improving the universality of the device.

[0029] In this embodiment, the fluid pipeline includes a non-transparent pipeline 31 and a transparent pipeline 32. Each fluid unit assembly 10 includes a fluid sample container, a fluid meter, and a fluid sub-valve. One end of the fluid meter is connected to the fluid sample container pipeline, and the other end of the fluid meter is connected to the fluid sub-valve pipeline. The fluid sub-valve in each fluid unit assembly 10 is connected to the input end of the main valve 20 via an output pipeline. The non-transparent pipeline 31 is located at the output end of the main valve 20. The flow measurement unit assembly 40 is located at a predetermined position on the non-transparent pipeline 31. The camera unit assembly 50 is arranged parallel to one side of the transparent pipeline 32, and the laser unit assembly 60 is arranged parallel to the other side of the transparent pipeline 32.

[0030] The fluid sample container is used to store the fluid sample to be measured; the fluid meter is used to measure the flow value of the current fluid sample flowing out of the fluid sample container. For example, when the fluid unit group 10 is a liquid unit group, the corresponding fluid sample container can be a water container, and the fluid meter can be a mass flow meter, etc. The selection of specific fluid sample containers and fluid meters is related to the material state corresponding to the fluid unit group 10; the fluid sub-valve is used to control the flow of the fluid sample in the current fluid unit group 10 into the main pipeline (the fluid pipeline in this embodiment). The function of the fluid sub-valve is also that, for the three-phase fluid set up, if only two of the phases of fluid need to participate in the actual research, the fluid sub-valve corresponding to the other phase of fluid can be controlled to close, so as to be applicable to a variety of fluid measurement application scenarios.

[0031] The main valve 20 is set to control each phase of the fluid sample flowing into the fluid pipeline to deal with emergencies. For example, when the fluid leaks due to the interface not being tightly fastened in the device, the main valve 20 is controlled to close the mixed inflow of the fluid sample.

[0032] The flow measurement unit group 40 is used to measure the flow of the fluid samples flowing out of at least two fluid unit groups 10 and the corresponding mixed fluid after mixing in the fluid pipeline. Optionally, the flow measurement unit group 40 in this embodiment can be implemented by an ultrasonic flow meter.

[0033] Specifically, in this embodiment, the flow measurement unit assembly 40 is positioned at a predetermined position within the non-transparent pipe 31. When the flow measurement unit assembly 40 is implemented as an ultrasonic flow sensor, the ultrasonic flow sensor relies on ultrasonic reflection to detect the flow rate of the fluid, rather than relying on optical signals. Therefore, in the non-transparent pipe 31, optical interference is effectively avoided, ensuring that the signal received by the ultrasonic flow sensor is primarily the reflected ultrasonic signal, thereby improving measurement accuracy. The predetermined position can be the middle of the non-transparent pipe 31, where interference from optical signals is relatively minimal.

[0034] Furthermore, after the mixed fluid flows through the non-transparent pipe 31, it continues to flow into the transparent pipe 32. A camera unit assembly 50 is installed in parallel on one side of the transparent pipe 32, and a laser unit assembly 60 is installed on the other side of the transparent pipe 32. Based on particle image velocimetry technology, the mixed flow field is illuminated by laser light, and the position images of the tracer particles under two or more laser pulses are recorded with a camera. The position images of the tracer particles under multiple laser pulses are sent to a computer system. The computer system analyzes the fluid position in the two adjacent images to calculate the particle displacement and velocity, and then calculates the velocity distribution of the flow field based on the time interval.

[0035] In another embodiment, please refer to Figure 2 , Figure 2 This is another structural schematic diagram of a valve control flow field distribution measurement device provided by an embodiment of the present utility model. Figure 2 The relationship between the corresponding embodiment and the above embodiment is that the above corresponding structure is further refined. Specifically, in this embodiment, at least two fluid unit groups 10 include: a liquid unit group and a gas unit group, and / or a solid unit group. That is, the application scenarios of this embodiment can be a liquid unit group and a gas unit group, a liquid unit group and a solid unit group, and a liquid unit group, a gas unit group and a solid unit group. Specifically, Figure 2 In the example, a liquid unit group, a gas unit group, and a solid unit group are included at the same time.

[0036] The liquid unit group includes a liquid container, a liquid flowmeter, and a first sub-valve; the gas unit group includes a gas container, a gas flowmeter, and a second sub-valve; and the solid unit group includes tracer particles, an electronic balance, and a third sub-valve. For example, the liquid unit group may include a water tank, a mass flowmeter, and the first sub-valve; the gas unit group may include a nitrogen tank, a thermal mass flowmeter, and a second sub-valve; and the solid unit group may include a tracer particle container, an electronic balance, and a third sub-valve. Optionally, the tracer particles may be hollow polystyrene particles measuring 10 to 50 microns.

[0037] In one embodiment, please refer to Figure 3 , Figure 3 This is a structural diagram of a flow measurement unit group provided by an embodiment of the present invention; the flow measurement unit group 40 includes a first transducer 41 and a second transducer 42, and the first transducer 41 and the second transducer 42 are symmetrically arranged; this embodiment arranges a dual-channel transducer, and simultaneously receives or transmits signals through two channels to measure the mixed fluid. When the signal of one channel is affected by interference, noise or other uncertain factors, the signal of the other channel can be used as a reference or supplement. By comparing and mutually verifying the measurement data of the two channels, the flow rate of the fluid can be determined more accurately, thereby improving the accuracy and reliability of the measurement results.

[0038] The first transducer 41 includes a symmetrically arranged first probe a and a second probe b; the second transducer 42 includes a symmetrically arranged third probe c and a fourth probe d; the first probe a and the third probe c are on one side of the non-transparent pipe 31 (the upper side in the figure), and the second probe b and the fourth probe d are on the other side of the non-transparent pipe 31 (the lower side in the figure); the first probe a, the second probe b, the third probe c, and the fourth probe d, when inserted into the corresponding side of the non-transparent pipe 31, form a preset angle A with the corresponding side of the pipe and extend to a preset position D. In this embodiment, for one transducer, one probe acts as a transmitter to transmit an ultrasonic signal and the other probe acts as a receiver to receive the signal. Since the flow of the fluid causes the propagation time of the ultrasonic wave in the downstream and upstream directions to differ, the flow velocity of the fluid can be calculated by measuring this time difference. By setting two pairs of mutually symmetrical probes, the accuracy of determining the fluid flow rate can be improved. The preset angle A can be 45°, and the preset position D can be one-fifth of the diameter from the corresponding side of the pipe.

[0039] Further, please refer to Figure 4 , Figure 4 This is another structural schematic diagram of a flow measurement unit assembly provided by an embodiment of the present invention. The flow measurement unit assembly 40 includes a transducer excitation unit 41, an isolation unit 42, a signal conversion unit 43, and a power supply unit 44. The power supply unit 44 is connected to the transducer excitation unit 41, the isolation unit 42, and the signal conversion unit 43, respectively. The input end of the transducer excitation unit 41 is connected to the first probe a, the second probe b, the third probe c, and the fourth probe d, respectively. The output end of the transducer excitation unit 41 includes four output pins, and the isolation unit 42 includes four input pins. Each output pin of the transducer excitation unit 41 is connected to a corresponding input pin of the isolation unit 42. The output end of the isolation unit 42 is connected to the signal conversion unit 43.

[0040] The power supply unit 44 provides stable voltage and current to the entire flow measurement unit assembly 40, ensuring the normal operation of each unit. It can convert external input power (such as mains power or battery power) into a power supply suitable for the various circuit units within the flow measurement unit assembly 40.

[0041] The transducer excitation unit 41 is used to provide an appropriate excitation signal to the ultrasonic transducer, enabling the transducer to generate ultrasonic waves. The transducer excitation unit 41 in this embodiment includes four input terminals, which are respectively connected to the four probes to convert the measurement signal obtained by each probe into an ultrasonic signal.

[0042] The main function of the isolation unit 42 is to prevent electrical interference and signal crosstalk, and also to protect the safety of circuits and equipment. It can electrically isolate different circuit parts so that they do not affect each other.

[0043] The signal conversion unit 43 is mainly used to process and convert the ultrasonic signal processed by the isolation unit 42, and convert the ultrasonic signal into a signal form that can be recognized and processed by subsequent circuits or devices, usually converting analog signals into digital signals.

[0044] Furthermore, the improved signal conversion unit 43 of this embodiment includes a voltage-frequency conversion subunit and a level conversion subunit; the voltage-frequency conversion subunit and the level conversion subunit are connected. In this embodiment, the signal conversion unit 43 converts the measured voltage signal into a frequency signal, specifically, converting the received analog voltage into a corresponding pulse frequency signal according to a certain proportional relationship. Specifically, the voltage-frequency conversion subunit can be implemented using the conversion chip AD7741 to generate a 6M frequency output port of the single-chip microcomputer; the level conversion subunit can be implemented using the level conversion chip 74LVC1T45 to obtain a 2.5V voltage reference. The advantage of performing voltage-frequency conversion in this embodiment is that the voltage-frequency conversion process is a continuous integration of the input signal, and the collected signal is an integral over a certain period of time. Therefore, the single acquisition cycle is long, but the collected data is stable and not easily interfered with, and has strong anti-interference capabilities.

[0045] After obtaining the flow velocity of the mixed flow field based on the dual-channel transducer measurement, it is further necessary to perform photographic verification at the transparent pipe 32 based on the camera unit group 50 and the laser unit group to transmit the captured images to the computer system, so that the computer system can analyze the fluid position in two adjacent images to calculate the displacement and velocity of the particles, and then calculate the velocity distribution of the flow field according to the time interval.

[0046] For details, please refer to Figure 2 Before shooting, in order to keep the parameters of the captured image known, the camera unit group 50 in this embodiment includes a high-speed camera 51, a guide rail 52 and a fixed column 53. The fixed column 53 is arranged perpendicular to one side of the transparent pipe 32; the high-speed camera 51 is set in the guide rail 52 on one side of the fixed column 53, and the guide rail 52 is parallel to the transparent pipe 32, so that the high-speed camera 51 slides on the guide rail 52. The fixed column 53 in this embodiment can be in a lifting mode to provide different shooting heights for the high-speed camera 51. Through the setting method of this embodiment, the high-speed camera 51 can always maintain the same height during the sliding and moving shooting process, which is conducive to ensuring the consistency of the shooting environment.

[0047] Further, when the high-speed camera 51 is fixed on the guide rail 52, in order to improve the stability of the high-speed camera 51, please refer to Figure 5 , Figure 5 The high-speed camera 51 includes a first lens and a second lens, each of which includes a preset number of positioning holes (i.e. Figure 5 There are corresponding positioning holes at both ends of the connecting line), and the positions of the positioning holes in the first lens and the second lens correspond to each other; based on the rigid structure (the connecting line in the figure), the positioning holes at the same position in the first lens and the second lens are fixedly connected; the number of rigid structures is less than or equal to the preset number. Taking the example of 4 positioning holes in the figure as an example, the number of rigid structures is less than or equal to 4. In order to ensure the stability of the camera, it is preferably set to 4 rigid structures, that is, each positioning hole is fixed. In this embodiment, the focal length of the high-speed camera is adjusted for each lens, and it is fixed on the guide rail 52 in the improved manner of this embodiment. On the one hand, it can avoid damage to the internal components of the camera due to repeated packaging and disassembly; on the other hand, it is also convenient to adjust to achieve flexible adjustment of the optical parameters of the light field camera.

[0048] Please continue to refer to Figure 2 In the solution provided in this embodiment, the laser unit 60 includes a laser 61 and a lifting platform 62; the laser 61 is mounted on the lifting platform 62. The laser 61 is mounted on the other side of the transparent pipe 32. The lifting platform 62 allows the laser 61 to emit parallel light at different heights, providing a variety of data samples for subsequent data analysis.

[0049] Please continue to refer to Figure 2 The valve-controlled flow field distribution measurement device provided in this embodiment further includes a separation tank connected to the end of the transparent pipe 32. The advantage of providing a separation tank is that after the mixed fluid data sampling is completed, the separation tank can be used to separate samples of different material forms to avoid sample waste, thereby facilitating recycling.

[0050] The valve-controlled flow field distribution measurement device provided by an embodiment of the present invention includes at least two fluid unit groups, a main valve, a fluid pipeline, a flow measurement unit group, a camera unit group and a laser unit group; the fluid pipeline includes a transparent pipeline and a non-transparent pipeline; wherein each fluid unit group includes a fluid sample container, a fluid meter and a fluid sub-valve, one end of the fluid meter is connected to the fluid sample container pipeline, and the other end of the fluid meter is connected to the fluid sub-valve pipeline; this embodiment sets at least two fluid unit groups, and each unit group contains corresponding fluid sub-valves, so that in actual measurement scenarios, the opening or closing of a corresponding number of fluid sub-valves can be controlled according to actual measurement requirements, thereby achieving the purpose of being able to measure the flow field distribution of multiphase fluid; and in this embodiment, the flow measurement unit group is set in the non-transparent pipeline, which helps to reduce the measurement interference of light on the flow measurement unit group and improve the measurement accuracy; and finally, the flow field distribution in the transparent pipeline is photographed by the camera unit group and the laser unit group, which helps to subsequently analyze the position images of the tracer particles under the irradiation of multiple laser pulses through a computer system, and then calculate the velocity distribution of the flow field according to the time interval. The standard device for multiphase flow measurement provided in this embodiment has the beneficial effects of expanding the application range of the device and improving the accuracy of multiphase flow fluid distribution measurement.

[0051] Please refer to Figure 6 , Figure 6 The diagram is a schematic diagram of a valve control flow field distribution measurement system provided by an embodiment of the present invention. The valve control flow field distribution measurement system provided by an embodiment of the present invention includes a valve control flow field distribution measurement device integrated with any of the above embodiments.

[0052] Since the valve control flow field distribution measurement system 20 provided by the embodiment of the present invention adopts all the technical solutions of all the embodiments of the above-mentioned valve control flow field distribution measurement device 10, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0053] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will understand that various modifications, combinations, sub-combinations, and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included in the scope of protection of this utility model.

Claims

1. A valve control flow field distribution measurement device, characterized in that: include: At least two fluid unit groups, a main valve, a fluid pipeline, a flow measurement unit group, a camera unit group and a laser unit group; the fluid pipeline includes a transparent pipeline and a non-transparent pipeline; Each of the fluid unit groups includes a fluid sample container, a fluid meter, and a fluid sub-valve, one end of the fluid meter is connected to the fluid sample container pipeline, and the other end of the fluid meter is connected to the fluid sub-valve pipeline; The fluid sub-valve in each of the fluid unit groups is connected to the input end of the main valve via an output pipe, and the non-transparent pipe is arranged at the output end of the main valve; The flow measurement unit group is arranged at a preset position of the non-transparent pipe; The camera unit group is arranged in parallel on one side of the transparent pipe, and the laser unit group is arranged in parallel on the other side of the transparent pipe.

2. The valve control flow field distribution measuring device according to claim 1, characterized in that: The flow measurement unit group includes a first transducer and a second transducer, wherein the first transducer and the second transducer are symmetrically arranged; Wherein, the first transducer includes a first probe and a second probe which are symmetrically arranged; the second transducer includes a third probe and a fourth probe which are symmetrically arranged; The first probe and the third probe are on one side of the non-transparent pipe, and the second probe and the fourth probe are on the other side of the non-transparent pipe; When the first probe, the second probe, the third probe and the fourth probe are respectively extended into the corresponding pipe sides of the non-transparent pipe, they form a preset angle with the corresponding pipe sides and extend to a preset position.

3. The valve control flow field distribution measuring device according to claim 2, characterized in that: The flow measurement unit group includes a transducer excitation unit, an isolation unit, a signal conversion unit and a power supply unit; the power supply unit is connected to the transducer excitation unit, the isolation unit and the signal conversion unit respectively; The input end of the transducer excitation unit is connected to the first probe, the second probe, the third probe and the fourth probe respectively; The output end of the transducer excitation unit includes four output pins, the isolation unit includes four input pins, and each output pin of the transducer excitation unit is connected to a corresponding input pin of the isolation unit; The output end of the isolation unit is connected to the signal conversion unit.

4. The valve control flow field distribution measuring device according to claim 3, characterized in that: The signal conversion unit includes a voltage-frequency conversion subunit and a level conversion subunit; The voltage-frequency conversion subunit is connected to the level conversion subunit.

5. The valve control flow field distribution measuring device according to claim 1, characterized in that: The camera unit assembly includes a high-speed camera, a guide rail and a fixing column; The fixing column is arranged perpendicularly to one side of the transparent pipe; The high-speed camera is arranged in the guide rail on one side of the fixing column, and the guide rail is parallel to the transparent pipe, so that the high-speed camera slides and moves on the guide rail.

6. The valve control flow field distribution measuring device according to claim 5, characterized in that: The high-speed camera includes a first lens and a second lens, wherein the first lens and the second lens respectively include a preset number of positioning holes, and the positions of the positioning holes in the first lens and the second lens correspond to each other; Fixedly connecting the positioning holes at the same position of the first lens and the second lens based on a rigid structure; The number of the rigid structures is less than or equal to the preset number.

7. The valve control flow field distribution measuring device according to claim 1, characterized in that: The laser unit group includes: a laser and a lifting platform; The laser is mounted on the lifting platform.

8. The valve control flow field distribution measuring device according to claim 1, characterized in that: The at least two fluid unit groups include: a liquid unit group and a gas unit group, and / or a solid unit group; Wherein, the liquid unit group includes a liquid container, a liquid flow meter and a first sub-valve; The gas unit group includes a gas container, a gas flow meter and a second sub-valve; The solid unit group includes tracer particles, an electronic balance and a third sub-valve.

9. The valve control flow field distribution measuring device according to claim 1, characterized in that: The device also includes a separation tank; The separation tank is connected to the end of the transparent pipe.

10. A valve control flow field distribution measurement system, characterized in that: The device comprises the valve control flow field distribution measuring device as described in any one of claims 1 to 9.

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