Flow regulation system, method, device and equipment for sulfur hexafluoride gas test

Abstract

The invention provides a flow regulation system, method, device and equipment for a sulfur hexafluoride gas test. The system comprises sulfur hexafluoride electrical equipment, a sound wave generator, an acoustic fluid dynamic regulation chamber, a flow feedback control system, component analysis equipment and a sensor. Sulfur hexafluoride gas in the sulfur hexafluoride electrical equipment flows into the acoustic fluid dynamic adjusting chamber through a first pipeline; the acoustic fluid dynamics adjusting chamber is connected with the component analysis equipment through a second pipeline; a loudspeaker of the sound wave generator is arranged in the first pipeline, and sound waves generated by the loudspeaker act on the acoustic fluid dynamics adjusting chamber; the sensor is disposed in the acoustic hydrodynamic conditioning chamber or in the second line. Sound waves generated by the loudspeaker generate effective sound wave interaction with airflow in the acoustic fluid dynamics adjusting chamber, and the flow feedback control system adjusts the gas flow in the pipeline by controlling the sound waves of the sound wave generator, so that the effect of accurately adjusting the gas flow in the pipeline is achieved.

Description

Technical Field

[0001] This application relates to the technical field of power equipment, and in particular to a flow rate regulation system, method, device and equipment for sulfur hexafluoride gas testing. Background Art

[0002] Due to its stable structure, excellent insulation performance and good arc extinguishing characteristics, sulfur hexafluoride is widely used in the power industry. By testing the sulfur hexafluoride gas in sulfur hexafluoride electrical equipment and detecting various components contained therein, the health status of the equipment insulation can be reflected.

[0003] Currently, when testing sulfur hexafluoride gas, manual adjustment of the flow rate of sulfur hexafluoride gas is required for component analysis, which is inefficient and prone to situations where the flow rate is too large or too small, resulting in poor test accuracy.

[0004] Therefore, how to accurately regulate the flow rate of sulfur hexafluoride gas in the test pipeline is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a flow rate regulation system, method, device and equipment for sulfur hexafluoride gas testing, so as to achieve the effect of accurately regulating the flow rate of sulfur hexafluoride gas in the test pipeline.

[0006] In a first aspect, this application provides a flow rate regulation system for sulfur hexafluoride gas testing. The flow rate regulation system includes a sulfur hexafluoride electrical equipment, an acoustic wave generator, an acoustic fluid dynamics regulation chamber, a flow rate feedback control system, a component analysis equipment and a sensor;

[0007] The sulfur hexafluoride electrical equipment is connected to the acoustic fluid dynamics regulation chamber through a first pipeline, and the sulfur hexafluoride gas in the sulfur hexafluoride electrical equipment flows into the acoustic fluid dynamics regulation chamber through the first pipeline;

[0008] The acoustic fluid dynamics regulation chamber is connected to the component analysis equipment through a second pipeline, and the component analysis equipment is used to analyze the gas composition;

[0009] The horn of the acoustic wave generator is arranged in the first pipeline, and the acoustic wave generated by the horn acts on the acoustic fluid dynamics regulation chamber;

[0010] The sensor is arranged in the acoustic fluid dynamics regulation chamber or in the second pipeline;

[0011] The flow rate feedback control system is respectively connected to the sensor and the acoustic wave generator.

[0012] Optionally, the acoustic fluid dynamics regulation chamber is a cylindrical cylinder without bottoms at both ends.

[0013] Optionally, the radius of the cylindrical tube is 10 cm and the height is 30 cm.

[0014] Optionally, the diameter of the horn is greater than 5 cm and less than 10 cm.

[0015] Optionally, the sensor is a flow sensor, and the flow sensor is disposed in the second pipeline.

[0016] Optionally, the sensor is a sound pressure sensor, and the sound pressure sensor is disposed in the acoustic fluid dynamics adjustment chamber;

[0017] Or,

[0018] the sensor is a sound velocity sensor, and the sound velocity sensor is disposed in the acoustic fluid dynamics adjustment chamber.

[0019] In a second aspect, the present application further provides a flow rate adjustment method for a sulfur hexafluoride gas test, which is applied to the flow rate feedback control system according to any one of the first aspects. The method includes:

[0020] Setting the excitation voltage of the acoustic wave generator to a preset voltage so that the acoustic wave generator generates a preset acoustic wave, and the preset acoustic wave acts on the acoustic fluid dynamics adjustment chamber;

[0021] Obtaining sensor data;

[0022] Determining the pipeline flow rate in the pipeline from the acoustic fluid dynamics adjustment chamber to the component analysis device according to the sensor data;

[0023] If the pipeline flow rate exceeds the error range of the preset target flow rate, then adjust the excitation voltage of the acoustic wave generator according to the difference between the pipeline flow rate and the target flow rate until the new pipeline flow rate is within the error range of the target flow rate.

[0024] In a third aspect, the present application provides a flow rate adjustment device for a sulfur hexafluoride gas test. The device includes:

[0025] An output module, configured to set the excitation voltage of the acoustic wave generator to a preset voltage so that the acoustic wave generator generates a preset acoustic wave, and the preset acoustic wave acts on the acoustic fluid dynamics adjustment chamber;

[0026] An acquisition module, configured to acquire sensor data;

[0027] A flow rate determination module, configured to determine the pipeline flow rate in the pipeline from the acoustic fluid dynamics adjustment chamber to the component analysis device according to the sensor data;

[0028] A flow rate adjustment module, configured to adjust the excitation voltage of the acoustic wave generator according to the difference between the pipeline flow rate and the target flow rate if the pipeline flow rate exceeds the error range of the preset target flow rate until the new pipeline flow rate is within the error range of the target flow rate.

[0029] In a fourth aspect, the present application provides an electronic device, including: a memory, a processor;

[0030] The memory stores computer-executable instructions;

[0031] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method described in the second aspect.

[0032] In a fifth aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement the method described in the second aspect.

[0033] The present application provides a flow rate adjustment system, method, device and equipment for sulfur hexafluoride gas test. The system includes a sulfur hexafluoride electrical equipment, an acoustic wave generator, a sono-fluid-dynamic regulation chamber, a flow rate feedback control system, a composition analysis equipment and a sensor; the sulfur hexafluoride electrical equipment is connected to the sono-fluid-dynamic regulation chamber through a first pipeline, and the sulfur hexafluoride gas in the sulfur hexafluoride electrical equipment flows into the sono-fluid-dynamic regulation chamber through the first pipeline; the sono-fluid-dynamic regulation chamber is connected to the composition analysis equipment through a second pipeline, and the composition analysis equipment is used to analyze the gas composition; the horn of the acoustic wave generator is arranged in the first pipeline, and the acoustic wave generated by the horn acts on the sono-fluid-dynamic regulation chamber; the sensor is arranged in the sono-fluid-dynamic regulation chamber or the second pipeline; the flow rate feedback control system is respectively connected to the sensor and the acoustic wave generator. The horn generates an acoustic wave to have an effective acoustic interaction with the air flow in the sono-fluid-dynamic regulation chamber, thereby adjusting the gas flow rate in the pipeline and achieving the effect of accurately adjusting the gas flow rate in the pipeline. Description of the Drawings

[0034] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0035] Figure 1 It is a schematic structural diagram of a flow rate adjustment system for sulfur hexafluoride gas test provided by the present application;

[0036] Figure 2 It is a schematic flow chart of a flow rate adjustment method for sulfur hexafluoride gas test provided by the present application;

[0037] Figure 3Schematic structural diagram of a flow rate regulating device for sulfur hexafluoride gas tests provided by this application;

[0038] Figure 4 Schematic structural diagram of an electronic device provided by this application.

[0039] Through the above-mentioned drawings, specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0040] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with this application. On the contrary, they are merely examples of devices and methods consistent with some aspects of this application as detailed in the appended claims.

[0041] With the rapid development of the economy, more and more newly built and newly commissioned substations are emerging, and there are also more and more sulfur hexafluoride electrical equipment. The pressure inside sulfur hexafluoride electrical equipment is approximately around 0.5 MPa. In gas analysis and flow rate tests, for smaller test equipment, the gas flow rate may range from a few milliliters per minute (mL / min) to a few liters per minute (L / min). Currently, when conducting sulfur hexafluoride gas tests, it is necessary to manually adjust the flow rate of sulfur hexafluoride gas for the tests, which is inefficient and prone to situations where the flow rate is too large or too small, resulting in deviations in the test results.

[0042] In view of the above problems, this application provides a flow rate regulating system for sulfur hexafluoride gas tests. The sound waves generated by a sound wave generator propagate in a sono-fluid dynamics regulating chamber, interact with sulfur hexafluoride gas, and thereby affect flow characteristics such as vortices and turbulence in the fluid, thus realizing the regulation of the flow rate. At the same time, when sound waves propagate in the fluid, a pressure gradient will be generated, and this pressure gradient can drive the fluid to flow. By adjusting the pressure gradient of the sound waves, precise control of the flow rate can be achieved. The resonance effect will occur between the sound waves and the fluid flow, and this resonance effect can amplify the influence of the sound waves on the fluid flow, thereby enhancing the effect of flow rate regulation.

[0043] It should be noted that the range regulated by the sound wave generator is limited, and it is necessary to adjust within the threshold range close to the required flow rate to accurately achieve the required flow rate in the pipeline.

[0044] The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments. The following several specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0045] Figure 1 FIG. is a schematic structural diagram of a flow rate regulating system for a sulfur hexafluoride gas test provided by the present application. As Figure 1 shown, the flow rate regulating system includes a sulfur hexafluoride electrical equipment, an acoustic wave generator, an acoustic fluid dynamics regulating chamber, a flow rate feedback control system, a component analysis device, and a sensor;

[0046] The sulfur hexafluoride electrical equipment is connected to the acoustic fluid dynamics regulating chamber through a first pipeline, and the sulfur hexafluoride gas in the sulfur hexafluoride electrical equipment flows into the acoustic fluid dynamics regulating chamber through the first pipeline.

[0047] The acoustic fluid dynamics regulating chamber is connected to the component analysis device through a second pipeline, and the component analysis device is used to analyze the gas composition.

[0048] The horn of the acoustic wave generator is arranged in the first pipeline, and the acoustic wave generated by the horn acts on the acoustic fluid dynamics regulating chamber.

[0049] In one implementation, only the horn of the acoustic wave generator is placed in the first pipeline, before the acoustic fluid dynamics regulating chamber, while the device of the acoustic wave generator is placed outside the first pipeline. The line between the first pipeline device and the horn passes through the first pipeline and is well sealed.

[0050] In another implementation, both the acoustic wave generator and the horn are placed in the first pipeline. In the first pipeline, a device chamber is provided that can accommodate the acoustic wave generator. The horn faces the acoustic fluid dynamics regulating chamber, thus ensuring the tightness of the entire pipeline.

[0051] The sensor is arranged in the acoustic fluid dynamics regulating chamber or the second pipeline.

[0052] In one implementation, the sensor is a flow rate sensor, arranged in the second pipeline, that is, after the acoustic fluid dynamics regulating chamber, and can obtain the pipeline flow rate after acoustic wave regulation.

[0053] In one implementation, the sensor is a sound pressure sensor, arranged in the acoustic fluid dynamics regulating chamber, to obtain sound pressure data, and then calculate the flow rate data.

[0054] In one implementation, the sensor is a sound velocity sensor, arranged in the acoustic fluid dynamics regulating chamber, to obtain sound velocity data, and then calculate the flow rate data.

[0055] The flow feedback control system is respectively connected to the sensor and the acoustic wave generator. The flow feedback control system can be a control device.

[0056] The flow feedback control system can receive the data from the sensor, then calculate the gas flow rate in the second pipeline, and then adjust the voltage of the acoustic wave generator to adjust the flow rate in the pipeline.

[0057] Through the above-mentioned flow regulation system for sulfur hexafluoride gas tests, the flow rate in the pipeline can be accurately adjusted through the acoustic waves generated by the acoustic wave generator.

[0058] In one implementation, the acoustic fluid dynamics regulation chamber is designed as a cylinder with both ends open. The symmetry of the cylinder shape can ensure the uniform propagation of acoustic waves in space. The propagation of acoustic waves in a pipeline generally follows the wave law. The cylinder shape provides a uniform propagation medium, which helps the stable transmission and regulation of acoustic waves. Exemplarily, the two ends of the cylinder have no bottom, the radius is 10 cm, and the height is 30 cm. Such dimensions provide enough space for acoustic waves to propagate therein, and at the same time, it will not be too large to cause unnecessary space waste.

[0059] In another implementation, the acoustic fluid dynamics regulation chamber is designed as a cone. The conical structure can gradually accelerate or decelerate the air flow, which helps to adjust the propagation effect of acoustic waves in different regions. Especially in the control of gas flow rate changes, the conical structure helps to generate the required hydrodynamic effects. The directions of the large head and the small head of the cone are set according to needs. If the horn of the acoustic wave generator faces the opening of the large head of the cone, the air flow will be accelerated.

[0060] In another implementation, the acoustic fluid dynamics regulation chamber is designed in a spiral shape, which can produce a unique eddy current effect on the air flow and acoustic waves.

[0061] The role of the horn is to act on the acoustic fluid dynamics regulation chamber through acoustic waves, thereby affecting the flow and mixing of sulfur hexafluoride gas. The size of the horn (specifically the diameter) will directly affect the propagation characteristics of acoustic waves and their interaction with gas flow.

[0062] If the horn aperture is too small, the acoustic wave energy will be concentrated and it will be difficult to effectively act on the gas flow; while if the aperture is too large, the acoustic waves will scatter too quickly and the effect will be reduced.

[0063] The goal of generating sound waves through a horn is to control or adjust the gas flow rate and produce an effective acoustic interaction with the gas flow. The diameter of the horn needs to be close to 1 / 4 to 1 / 2 of the diameter size of the adjustment chamber. This can ensure the effective propagation of sound waves and will not cause excessive local interference to the gas flow. Therefore, when the radius of the acoustic-hydrodynamic adjustment chamber is 10 cm, and the target frequency of the horn is in the range of several hundred hertz, the diameter of the horn is about 5 - 10 cm. This range can ensure the effective propagation of sound waves and will not be too concentrated or dispersed.

[0064] Taking the flow feedback control system as the main execution body, the method of controlling the flow rate in the pipeline will be introduced below.

[0065] Figure 2 The flowchart of a flow rate adjustment method for sulfur hexafluoride gas testing provided by this application is as Figure 2 shown, and this method includes the following steps:

[0066] S101. Set the excitation voltage of the acoustic wave generator to a preset voltage so that the acoustic wave generator generates a preset acoustic wave, and the preset acoustic wave acts on the acoustic-hydrodynamic adjustment chamber.

[0067] The user or the electronic device controls to open the gas valve of the sulfur hexafluoride electrical equipment, and the gas flows into the acoustic-hydrodynamic adjustment chamber. The flow feedback control system sets the excitation voltage of the acoustic wave generator to a preset voltage, and the magnitude, frequency, and phase of the preset voltage are all preset. The horn of the acoustic wave generator generates an acoustic wave with a preset frequency, amplitude, and phase and acts on the acoustic-hydrodynamic adjustment chamber.

[0068] S102. Obtain sensor data.

[0069] S103. Determine the pipeline flow rate in the pipeline from the acoustic-hydrodynamic adjustment chamber to the component analysis equipment according to the sensor data.

[0070] In one implementation, if the sensor data is the flow rate data collected by the flow rate sensor, the pipeline flow rate after acoustic wave adjustment can be directly determined.

[0071] In one implementation, the sensor data is the sound pressure data collected by the sound pressure sensor,

[0072] The change in sound pressure can reflect the change in the fluid flow state. When the fluid flow rate increases, the impact of the fluid on the pipeline wall increases, resulting in an increase in sound pressure. Conversely, the sound pressure weakens. By monitoring the change in sound pressure, the change in flow rate can be calculated.

[0073] Specifically, in acoustic-hydrodynamics, there is a certain relationship between the sound pressure P and the flow velocity V. This relationship can be described by Bernoulli's equation:

[0074] P = 1 / 2ρV 2 + constant

[0075] Where P is the sound pressure, ρ is the density of the fluid, and the constant includes the static pressure and other constant terms.

[0076] The relationship between the flow rate Q, the flow velocity V, and the cross-sectional area A of the pipeline is:

[0077] Q = AV

[0078] Based on the measured sound pressure, the flow velocity can be calculated, and using the relationship between the flow rate and the flow velocity, the flow rate Q can be calculated.

[0079] In one implementation, the sensor data is the sound velocity data collected by the sound velocity sensor. The propagation speed of sound in the fluid is closely related to the physical properties of the fluid. When the fluid flow velocity increases, physical properties such as the density and temperature of the fluid will change, thereby affecting the propagation speed of sound. By measuring the change in sound velocity, the flow velocity and flow rate of the fluid can be calculated.

[0080] Assume the frequency of the sound wave source is f 0 , the sound velocity c in the fluid, the flow velocity v, and the measured frequency change is Δf. According to the Doppler effect principle, it can be expressed as:

[0081]

[0082] In the fluid, the relationship between the sound velocity c, the fluid density ρ, and the elastic modulus K can be expressed as:

[0083]

[0084] Therefore, the flow velocity is expressed as:

[0085]

[0086] The flow rate is expressed as:

[0087]

[0088] Therefore, based on the measured sound velocity and the frequency change, the flow rate can be calculated.

[0089] S104. If the pipeline flow rate exceeds the error range of the preset target flow rate, then according to the difference between the pipeline flow rate and the target flow rate, adjust the excitation voltage of the acoustic wave generator until the new pipeline flow rate is within the error range of the target flow rate.

[0090] In this step, the component analysis device conducts gas detection and presets the target flow rate. However, the adjustment of the flow rate by sound waves has limitations. Only when the pipeline flow rate is within the threshold range of the target flow rate can it be adjusted. That is, the pipeline flow rate exceeds the error range of the target flow rate and is less than the threshold range of the target flow rate.

[0091] By changing parameters such as the frequency, amplitude, and phase of the sound wave, the fluid flow state can be affected, thereby achieving the adjustment of the flow rate. Specifically, by changing the magnitude of the excitation voltage, the output frequency of the oscillator can be changed. Increasing the voltage can increase the frequency of the sound wave, accelerate the fluid flow, and increase the pipeline flow rate, and vice versa to reduce the pipeline flow rate.

[0092] By increasing the excitation voltage, the amplitude of the sound wave can be increased, and then a stronger periodic force can be induced in the pipeline, making the direction and speed of the fluid flow more consistent, thereby enhancing the flow stability of the fluid, avoiding unstable flow or turbulence, and further increasing the pipeline flow rate, and vice versa to reduce the pipeline flow rate.

[0093] By adjusting the phase of the sound wave, the sound wave forces at different positions can interfere, strengthen, or weaken each other at the correct timing, so that the fluid flow can be precisely controlled. The fine adjustment of the phase enables the fluid flow in the pipeline to be precisely adjusted according to requirements, controlling the change of the flow rate. Phase control is achieved by directly changing the starting point or time delay of the voltage waveform to ensure that the phase of the signal can be precisely adjusted.

[0094] According to the difference between the pipeline flow rate and the target flow rate, it can be determined whether to increase or decrease the current pipeline flow rate, and then adjust the frequency, amplitude, or phase of the sound wave to adjust the flow rate in the pipeline so that it is within the error range of the target flow rate.

[0095] This embodiment provides a method for adjusting the flow rate of a sulfur hexafluoride gas test. According to the sensor data, the pipeline flow rate in the pipeline from the acoustic fluid dynamics adjustment chamber to the component analysis device is determined; if the pipeline flow rate exceeds the error range of the preset target flow rate, the excitation voltage of the sound wave generator is adjusted according to the difference between the pipeline flow rate and the target flow rate until the new pipeline flow rate is within the error range of the target flow rate. Through this method, manual adjustment is not required, and precise adjustment of the flow rate is achieved through sound wave adjustment.

[0096] Figure 3 It is a schematic structural diagram of a flow rate adjustment device for a sulfur hexafluoride gas test provided by this application, as Figure 3 shown, the flow rate adjustment device 30 for the sulfur hexafluoride gas test includes:

[0097] An output module 301 is configured to set the excitation voltage of the acoustic wave generator to a preset voltage, so that the acoustic wave generator generates a preset acoustic wave, and the preset acoustic wave acts on the acoustic fluid dynamics regulation chamber;

[0098] An acquisition module 302 is configured to acquire sensor data;

[0099] A flow rate determination module 303 is configured to determine the pipeline flow rate in the pipeline from the acoustic fluid dynamics regulation chamber to the component analysis device according to the sensor data;

[0100] A flow rate adjustment module 304 is configured to, if the pipeline flow rate exceeds the error range of a preset target flow rate, adjust the excitation voltage of the acoustic wave generator according to the difference between the pipeline flow rate and the target flow rate until the new pipeline flow rate is within the error range of the target flow rate.

[0101] The flow rate adjustment device for the sulfur hexafluoride gas test provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here in this embodiment.

[0102] Figure 4 It is a schematic structural diagram of an electronic device provided by this application. As Figure 4 shown, the electronic device 50 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the device 50 further includes a communication component 503. Among them, the processor 501, the memory 502, and the communication component 503 are connected through a bus 504.

[0103] In a specific implementation process, at least one processor 501 executes computer execution instructions stored in the memory 502, so that at least one processor 501 executes the above method.

[0104] The specific implementation process of the processor 501 can refer to the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here in this embodiment.

[0105] In the above embodiment, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, abbreviated as: CPU), and may also be other general-purpose processors, digital signal processors (English: Digital Signal Processor, abbreviated as: DSP), application specific integrated circuits (English: Application Specific Integrated Circuit, abbreviated as: ASIC), etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly implemented by a hardware processor or implemented by a combination of hardware and software modules in the processor.

[0106] The memory may include a random access memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.

[0107] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, the buses in the drawings of this application are not limited to only one bus or one type of bus.

[0108] This application also provides a computer program product, including a computer program which, when executed by a processor, implements the above method.

[0109] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above method.

[0110] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk or an optical disc. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0111] An exemplary readable storage medium is coupled to the processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0112] The division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed among each other can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0113] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0114] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0115] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present invention. And the aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks or optical discs and other various media that can store program codes.

[0116] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When this program is executed, it executes the steps including the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disks or optical discs and other various media that can store program codes.

[0117] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field not disclosed in the present invention. It is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A flow control system for sulfur hexafluoride gas testing, characterized in that: The flow regulation system includes sulfur hexafluoride electrical equipment, a sound wave generator, an acoustofluid dynamics regulation chamber, a flow feedback control system, a component analysis device and a sensor; The sulfur hexafluoride electrical device is connected to the acoustofluidic regulation chamber via a first pipeline, and the sulfur hexafluoride gas in the sulfur hexafluoride electrical device flows into the acoustofluidic regulation chamber via the first pipeline; The acoustofluid dynamics regulating chamber is connected to the component analysis device via a second pipeline, and the component analysis device is used to analyze the gas composition; The speaker of the sound wave generator is arranged in the first pipeline, and the sound waves generated by the speaker act on the acousto-fluid dynamics regulating chamber; The sensor is disposed in the acoustohydrodynamics adjustment chamber or in the second pipeline; The flow feedback control system is connected to the sensor and the sound wave generator respectively.

2. The flow regulating system according to claim 1, characterized in that: The acoustohydrodynamics regulating chamber is a cylindrical tube with no bottom at both ends.

3. The flow regulating system according to claim 2, characterized in that: The radius of the cylindrical tube is 10 cm and the height is 30 cm.

4. The flow regulating system according to claim 3, characterized in that: The diameter of the horn is greater than 5 cm and less than 10 cm.

5. The flow regulating system according to any one of claims 1 to 4, characterized in that: The sensor is a flow sensor, and the flow sensor is arranged in the second pipeline.

6. The flow regulating system according to any one of claims 1 to 4, characterized in that: The sensor is a sound pressure sensor, and the sound pressure sensor is arranged in the acousto-fluid dynamics adjustment chamber; or, The sensor is a sound velocity sensor, and the sound velocity sensor is arranged in the acoustohydrodynamics adjustment chamber.

7. A flow rate regulation method for sulfur hexafluoride gas testing, characterized in that: The flow feedback control system applied to any one of claims 1 to 6, the method comprising: Setting the excitation voltage of the sound wave generator to a preset voltage so that the sound wave generator generates a preset sound wave, and the preset sound wave acts on the acoustohydrodynamics regulation chamber; Get sensor data; Determine the pipeline flow rate in the pipeline from the acoustofluid dynamics adjustment chamber to the component analysis device according to the sensor data; If the pipeline flow exceeds the error range of the preset target flow, the excitation voltage of the acoustic wave generator is adjusted according to the difference between the pipeline flow and the target flow until the new pipeline flow is within the error range of the target flow.

8. A flow regulating device for sulfur hexafluoride gas testing, characterized in that: The device comprises: An output module, used for setting the excitation voltage of the sound wave generator to a preset voltage, so that the sound wave generator generates a preset sound wave, and the preset sound wave acts on the acoustohydrodynamics regulation chamber; An acquisition module, used to acquire sensor data; A flow determination module, used to determine the pipeline flow in the pipeline from the acoustofluid dynamics adjustment chamber to the component analysis device according to the sensor data; The flow regulating module is used to adjust the excitation voltage of the acoustic wave generator according to the difference between the pipeline flow and the target flow if the pipeline flow exceeds the error range of the preset target flow until the new pipeline flow is within the error range of the target flow.

9. An electronic device, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method of claim 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to claim 7 when executed by a processor.

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