A liquid atomization and constituent analysis system and method

Abstract

This invention provides a liquid atomization and component analysis system and method, relating to the field of liquid component technology. It includes an atomization device, a detection device, and a pulse voltage generating device. The atomization device atomizes the liquid to be tested, and the detection device detects the atomized liquid and outputs the detection results. The atomization device includes an atomization main pipe and an atomization oscillation divider. The atomization oscillation divider divides the internal space of the atomization main pipe into a detection liquid receiving chamber and an atomized liquid flow chamber. The atomization oscillation divider includes a piezoelectric ceramic sheet with multiple atomization holes. The surface of the piezoelectric ceramic sheet is covered with a metal film, and the metal film on the surface of the piezoelectric ceramic sheet is electrically connected to the pulse voltage generating device. The pulse voltage generating device provides a pulse voltage to the metal film on the surface of the piezoelectric ceramic sheet. This application utilizes the high-frequency vibration of the piezoelectric ceramic sheet to atomize the liquid to be tested, which then enters the atomized liquid flow chamber.

Description

Technical Field

[0001] This invention relates to the field of liquid composition technology, and more specifically, to a liquid atomization and composition analysis system and method. Background Technology

[0002] Currently, with industrial development, the number and types of hazardous substances used are increasing, such as toxic, corrosive, hazardous reactive, and flammable liquids. These liquids pose potential dangers to surrounding organisms and the environment, so the detection of these liquids is essential.

[0003] Liquid composition detection technology is closely related to economic development and people's health. There are two methods in this field: direct liquid detection and detection after liquid atomization. Direct liquid detection usually requires the use of chemical reagents for sampling and mixing, which is not only cumbersome and time-consuming, but also requires laboratory testing.

[0004] After the liquid is atomized, it is monitored, and the mixture of the atomized liquid and helium is detected by gas chromatography. This method has the advantage of small-volume in-situ real-time online monitoring. However, due to the influence of structure and volume, general atomization devices can only be placed in a vacuum chamber together with the liquid being tested in a low-pressure environment, which greatly increases the volume of the chamber and makes liquid detection more difficult. Summary of the Invention

[0005] The problem solved by this invention is to reduce the difficulty and cost of liquid detection.

[0006] To address the aforementioned problems, in a first aspect, the present invention provides a liquid atomization and component analysis system, comprising an atomization device, a detection device, and a pulse voltage generating device. The atomization device is used to atomize the liquid to be tested, and the detection device detects the atomized liquid and outputs the detection results.

[0007] The atomizing device includes an atomizing main pipe and an atomizing oscillation divider, wherein the atomizing oscillation divider divides the internal space of the atomizing main pipe into a detection liquid receiving chamber and an atomizing liquid flow chamber;

[0008] The atomizing oscillation divider includes a piezoelectric ceramic sheet with multiple atomizing holes. The surface of the piezoelectric ceramic sheet is covered with a metal film, and the metal film on the surface of the piezoelectric ceramic sheet is electrically connected to the pulse voltage generating device. The pulse voltage generating device is used to provide a pulse voltage to the metal film on the surface of the piezoelectric ceramic sheet.

[0009] Optionally, it also includes an inert gas cylinder and a discharge chamber, wherein the outlet of the inert gas cylinder is connected to the atomizing liquid flow chamber in the atomizing main pipe, and the discharge chamber is also connected to the atomizing fluid flow chamber in the atomizing main pipe;

[0010] The detection device includes a detection probe, which is used to detect the atomized liquid collected in the discharge chamber.

[0011] Optionally, a hollow cathode tube is installed inside the discharge chamber, and the axis of the hollow cathode tube is parallel to the gas flow direction inside the discharge chamber.

[0012] Optionally, the atomizing oscillation divider further includes a sealing rubber, and there are multiple piezoelectric ceramic sheets. The multiple piezoelectric ceramic sheets are evenly spaced around the axis of the atomizing main pipe to form a cylindrical structure. The two ends of the cylindrical structure are sealed with the sealing rubber. The interior of the cylindrical structure is configured as an atomizing liquid flow chamber, and the space between the cylindrical structure and the atomizing main pipe (11) is configured as a detection liquid receiving chamber.

[0013] Optionally, a first tube and a second tube are installed at both ends of the atomizing main pipe, and the first tube and the second tube are simultaneously connected to the atomizing liquid flow chamber.

[0014] Optionally, a third tube is also fixedly installed on the atomizing pipe body, and the third tube is connected to the detection liquid receiving cavity.

[0015] Optionally, the pulse voltage generating device includes a driving circuit and a pulse generating circuit. The pulse generating circuit is used to generate a pulse signal. The driving circuit is electrically connected to the pulse generating circuit and converts the pulse signal into a pulse voltage. The output terminal of the driving circuit is electrically connected to the metal film on the surface of the piezoelectric ceramic sheet and is used to provide a pulse voltage to the metal film on the surface of the piezoelectric ceramic sheet.

[0016] Secondly, the present invention also provides a method for liquid atomization and component analysis, the method comprising:

[0017] Based on the preset resonant frequency, a pulse control command is sent to the pulse voltage generating device, and the air inlet valve and air outlet valve of the discharge chamber are opened.

[0018] The air inlet valve and the air outlet valve of the discharge chamber are controlled to close, and the current and voltage signals of the atomized liquid in the discharge chamber are obtained from the detection probe to establish the measured CVCs curve of the liquid to be tested.

[0019] Based on the measured CVCs curves and the preset electron energy distribution function, a current-voltage characteristic analysis curve after second differentiation is established.

[0020] Electronic characteristic peaks are captured from the current-voltage characteristic analysis curve after the second derivative, and impurity electron groups are matched from a pre-stored impurity distribution data table based on the electronic characteristic peaks. The impurity distribution data table includes multiple impurity electron groups and electronic characteristic peaks corresponding to the impurity electron groups.

[0021] Optionally, the step of establishing the current-voltage characteristic analysis curve after second differentiation based on the measured CVCs curve and the preset electron energy distribution function includes:

[0022] The second-order differential function of voltage is generated based on the electron energy distribution function.

[0023] Based on the measured CVCs curve and the second-order voltage differential function, an analysis curve of the current-voltage characteristics after second-order differentiation is established.

[0024] Optionally, before closing the inlet valve and the outlet valve of the discharge chamber, acquiring the current and voltage signals of the atomized liquid in the discharge chamber fed back by the detection probe, and establishing the measured CVCs curve of the liquid to be tested, the method further includes:

[0025] The current and voltage signals of the atomized liquid in the discharge chamber fed back by the detection probe are obtained, and the test CVC curve of the liquid to be tested is established.

[0026] Capture the identifying characteristic peaks of the test CVCs curves.

[0027] In summary, at least the following beneficial effects exist:

[0028] To facilitate the detection of liquid components, the liquid to be tested is filled into the liquid-containing cavity of the atomizing main tube. Then, a pulse voltage generated by a pulse voltage generator supplies power to the metal film on the surface of the piezoelectric ceramic sheet. Under the influence of the inverse piezoelectric effect, the piezoelectric ceramic sheet generates internal stress, causing deformation and high-frequency vibration along the axial direction of the atomizing main tube. The liquid in the liquid-containing cavity is dispersed through the atomization holes of the piezoelectric ceramic sheet by the high-frequency vibration and enters the atomized liquid flow cavity. At this point, the detection probe of the detection device can be directly inserted into the atomized liquid flow cavity for detection. Alternatively, a gas that does not readily react with the atomized liquid can be introduced into the atomized liquid flow cavity, causing the gas to carry the atomized liquid towards the detection device, facilitating the analysis of the components in the atomized liquid. This application eliminates the need to place the atomizing device and the liquid to be tested together in a vacuum chamber, significantly reducing the space and resources required for liquid detection, while also simplifying the detection process. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall framework structure of an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the overall structure of the atomizing device in an embodiment of the present invention;

[0031] Figure 3 This is a cross-sectional view of the atomizing main pipe in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the discharge chamber in an embodiment of the present invention;

[0033] Figure 5 This is a circuit diagram of the pulse voltage generating device in an embodiment of the present invention;

[0034] Figure 6 This is a schematic flowchart of a liquid atomization and component analysis method provided in an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached drawings: 1. Atomizing device; 11. Atomizing main pipe; 12. Atomizing oscillation divider; 121. Piezoelectric ceramic sheet; 122. Sealing rubber; 13. Detection liquid containment chamber; 14. First tube; 15. Second tube; 16. Third tube; 2. Pulse voltage generating device; 21. Pulse generating circuit; 22. Drive circuit; 3. Discharge chamber; 31. Hollow cathode tube. Detailed Implementation

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the following description is provided in conjunction with the accompanying drawings. Figure 1-6 Specific embodiments of the present invention will be described in detail below.

[0037] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0038] In the description of this specification, references to terms such as "embodiment," "some embodiments," and "optional embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative embodiment of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0039] like Figure 1 , Figure 2 as well as Figure 3 As shown, this application provides a liquid atomization and component analysis system, including an atomization device 1, a detection device, and a pulse voltage generating device 2. The atomization device 1 is used to atomize the liquid to be tested, and the detection device detects the atomized liquid and outputs the detection results.

[0040] The atomizing device 1 includes an atomizing main pipe 11 and an atomizing oscillation dividing component 12. The atomizing oscillation dividing component 12 divides the internal space of the atomizing main pipe 11 to form a detection liquid receiving chamber 13 and an atomizing liquid flow chamber.

[0041] The atomizing oscillation divider 12 includes a piezoelectric ceramic sheet 121 with multiple atomizing holes. The surface of the piezoelectric ceramic sheet 121 is covered with a metal film, and the metal film on the surface of the piezoelectric ceramic sheet 121 is electrically connected to the pulse voltage generating device 2. The pulse voltage generating device 2 is used to provide a pulse voltage to the metal film on the surface of the piezoelectric ceramic sheet 121.

[0042] In this embodiment, to facilitate the detection and analysis of the components of the liquid to be tested, the liquid to be tested is atomized, and then detected by a detection device. Atomizing the liquid to be tested improves detection sensitivity, sample uniformity, and analysis speed, facilitates sample processing, and has strong scalability and applicability. The detection device here can be equipped with a detection probe, such as a gas analyzer or spectrometer with a detection probe, or it can be a gas chromatograph that directly introduces gas for detection.

[0043] The atomizing main channel 11 consists of a cylindrical glass tube with a length of 6cm, an outer diameter of 4cm, and an inner diameter of 3.5cm, and glass discs with an outer diameter of 6cm, an inner diameter of 2cm, and a thickness of 0.5cm at both ends. A piezoelectric ceramic sheet 121 is mounted on the glass discs of the atomizing main channel 11 via rubber. Multiple atomizing holes are unevenly distributed on the piezoelectric ceramic sheet 121; these holes are laser-made micropores with a diameter of 4µm.

[0044] The pulse voltage output terminal of the pulse voltage generating device 2 is connected to the two side surfaces of the piezoelectric ceramic sheet 121 located in the detection liquid receiving chamber 13 and the atomized liquid flow chamber, respectively, via two wires. When detecting and analyzing the composition of the liquid, the pulse voltage generating device 2 provides a high-frequency pulse voltage to the metal film on the surface of the piezoelectric ceramic sheet 121. The core controller of the pulse voltage generating device 2 can be an embedded microcontroller, such as an STC51 or STM32 microcontroller. Furthermore, the embedded microcontroller uses a PID algorithm to adjust and control the output frequency of the pulse voltage generating device 2, so as to quickly match the resonant frequency of the piezoelectric ceramic sheet 121.

[0045] When a pulse voltage is applied to the metal film on the surface of the piezoelectric ceramic sheet 121, the piezoelectric ceramic crystal is deformed under the action of the output voltage by utilizing the inverse piezoelectric effect, thereby achieving high-frequency vibration. When the liquid to be tested enters the atomized liquid flow chamber through the nano-sized pores in the piezoelectric ceramic sheet 121, the high-frequency vibration of the piezoelectric ceramic sheet 121 disperses the liquid to form water mist, thus achieving atomization.

[0046] After atomization, the liquid enters the atomized liquid flow chamber from the detection liquid receiving chamber 13. Then, the detection device can detect the atomized liquid. Compared with the atomization method that can only be placed in a vacuum chamber together with the liquid being tested under low pressure environment, this embodiment uses high-frequency vibration of piezoelectric ceramic sheet 121 to achieve atomization, which reduces the difficulty of liquid atomization and the space required for liquid atomization.

[0047] like Figure 1 and Figure 4 As shown, optionally, it also includes an inert gas cylinder and a discharge chamber 3. The outlet of the inert gas cylinder is connected to the atomizing liquid flow chamber in the atomizing main pipe 11, and the discharge chamber 3 is also connected to the atomizing fluid flow chamber in the atomizing main pipe 11.

[0048] The detection device includes a detection probe, which is used to detect the atomized liquid collected in the discharge chamber 3.

[0049] In this embodiment, to facilitate the detection of the atomized liquid and remove it from the atomization flow chamber of the atomizing main pipe 11, after the liquid is atomized, inert gas is injected into the atomization flow chamber of the atomizing main pipe 11 so that the atomized liquid flows together with the injected inert gas into the discharge chamber 3. A solenoid valve is installed on the exhaust pipe of the inert gas bottle here.

[0050] After the atomized liquid flows into the discharge chamber 3, it undergoes discharge treatment. The atomized liquid is processed, decomposed, or transformed through the discharge reaction. The atomized liquid droplets can generate high-energy electrons, ions, free radicals, etc., through the discharge reaction, thereby triggering a series of chemical reactions or physical effects. Specifically, these effects may include promoting chemical reactions to produce specific chemical products, decomposing toxic substances, achieving specific physical effects, and improving detection sensitivity, thus facilitating the detection device to detect the components of the atomized liquid through the detection probe.

[0051] The introduction of atomized liquid into the discharge chamber 3 can also increase the contact area between the liquid and the discharge air during the discharge process, thereby improving the discharge effect or achieving specific discharge reactions. Specifically, the atomized liquid greatly increases the surface area of ​​the droplets, and the contact between the liquid and the discharge air is more sufficient, which helps to accelerate the reaction rate and improve the reaction efficiency. At the same time, by atomizing the liquid, the liquid is evenly distributed in the discharge space, and the liquid is dispersed into tiny droplets, which can reduce the consumption of liquid.

[0052] A vacuum pump is also connected to the side of the discharge chamber 3 away from the atomizing device 1 to facilitate gas flow. A solenoid valve is also installed on the air inlet pipe of the vacuum pump.

[0053] Optionally, a hollow cathode tube 31 is installed inside the discharge chamber 3, and the axis of the hollow cathode tube 31 is parallel to the gas flow direction inside the discharge chamber 3.

[0054] In this embodiment, the hollow cathode tube 31 in the discharge chamber 3 is a tubular tungsten rod, and there are two hollow cathode tubes 31. The axial direction of the hollow cathode tube 31 is parallel to the gas flow direction in the discharge chamber 3. When the inlet and outlet diameter of the hollow cathode tube 31 is smaller than the electrode diameter, the gas flow will carry the atomized liquid directly through the middle. Only at the outlet end will a small amount of liquid collide with the glass wall of the discharge chamber 3. The other positions in the discharge chamber 3 are diffused gas flow, so there are basically no liquid molecules.

[0055] like Figure 1 and Figure 3 As shown, optionally, the atomizing oscillation divider 12 also includes a sealing rubber 122, and multiple piezoelectric ceramic sheets 121 are distributed evenly at intervals around the axis of the atomizing main pipe 11 to form a cylindrical structure. The two ends of the cylindrical structure are sealed with the sealing rubber 122. The interior of the cylindrical structure is configured as an atomizing liquid flow chamber, and the space between the cylindrical structure and the atomizing main pipe 11 is configured as a detection liquid receiving chamber 13.

[0056] In this embodiment, there are multiple piezoelectric ceramic sheets 121, preferably eight, which are evenly spaced around the axis of the atomizing main channel 11. The two ends of the sealing rubber 122 are respectively fixed to two glass disks and reinforced by sealant.

[0057] Multiple fixing grooves are provided on the sealing rubber 122, and the piezoelectric ceramic sheet 121 is embedded in the fixing grooves to achieve the purpose of fixing the piezoelectric ceramic sheet 121. Here, the piezoelectric ceramic sheet 121 is 5cm long, 1cm wide, and 0.2mm thick.

[0058] like Figure 2 and Figure 3As shown, optionally, a first tube body 14 and a second tube body 15 are installed at both ends of the atomizing main pipe 11, and the first tube body 14 and the second tube body 15 are simultaneously connected to the atomizing liquid flow chamber.

[0059] In this embodiment, a first tube 14 and a second tube 15 are fixedly connected to the inner diameter of the two glass discs of the atomizing main pipe 11, respectively. The two ends of the first tube 14 are connected to the atomizing liquid flow chamber and the inert gas cylinder exhaust pipe, respectively. The two ends of the second tube 15 are connected to the atomizing liquid flow chamber and the discharge chamber 3, respectively, so as to facilitate the introduction of flowing gas into the atomizing main pipe 11.

[0060] Optionally, a third tube 16 is also fixedly installed on the atomizing pipe body, and the third tube 16 is connected to the detection liquid receiving chamber 13.

[0061] In this embodiment, the third tube 16 facilitates the addition of the liquid to be tested into the detection liquid receiving chamber 13 of the atomizing main pipe 11.

[0062] like Figure 1 and Figure 5 As shown, optionally, the pulse voltage generating device 2 includes a driving circuit 22 and a pulse generating circuit 21. The pulse generating circuit 21 is used to generate a pulse signal. The driving circuit 22 is electrically connected to the pulse generating circuit 21 and converts the pulse signal into a pulse voltage. The output terminal of the driving circuit 22 is electrically connected to the metal film on the surface of the piezoelectric ceramic sheet 121 and is used to provide a pulse voltage to the metal film on the surface of the piezoelectric ceramic sheet 121.

[0063] In this embodiment, the pulse generation circuit 21 includes a microcontroller minimum system module and a communication module 211, etc. The microcontroller here can be an STC51 microcontroller, which stores a pulse generation program and sets a PID feedback adjustment program to generate pulse signals by running the program in the microcontroller. The communication module here uses CH340G as the communication chip and transmits information through a USB interface.

[0064] The driving circuit 22 includes a driving switch transistor, a current-limiting resistor, a breakdown protection resistor, a signal filtering resistor, and a signal filtering capacitor. The filtering capacitor is connected in series between the microcontroller's signal output terminal and ground. One end of the signal filtering resistor is electrically connected to the microcontroller's signal output terminal, and the other end is electrically connected to the control terminal of the driving switch transistor. One end of the current-limiting resistor is connected to the power input, and the other end is electrically connected to the power input terminal of the driving switch transistor. The power output terminal of the driving switch transistor is grounded. The pulse voltage output terminal here is the connection point between the current-limiting resistor and the power input terminal of the driving switch transistor. The driving switch transistor can be an NPN transistor, an NMOS transistor, etc. When the driving switch transistor is an NPN transistor, the control terminal of the driving switch transistor is the base of the NPN transistor, the power input terminal of the driving switch transistor is the collector of the NPN transistor, and the power output terminal of the driving switch transistor is the emitter of the NPN transistor. When the driving switch is an NMOS transistor, the control terminal of the driving switch is the gate of the NMOS transistor, the power input terminal of the driving switch is the source of the NMOS transistor, and the power output terminal of the driving switch is the drain of the NMOS transistor.

[0065] This application also provides a liquid atomization and component analysis method, wherein the inlet and outlet of the discharge chamber 3 are respectively equipped with an inlet valve and an outlet valve. The execution subject of this method can be a computer processing terminal, and the specific processing procedure can be as follows: Figure 6 As shown, the method includes:

[0066] S101, based on the preset resonant frequency, sends a pulse control command to the pulse voltage generating device 2, and controls the opening of the air intake valve and exhaust valve of the discharge chamber 3.

[0067] In practice, the computer's processing terminal sends a pulse control command to the microcontroller of the pulse voltage generating device 2, causing the pulse voltage generating device 2 to provide a pulse voltage to the piezoelectric ceramic plate 121, thereby generating atomized liquid in the atomizing liquid flow chamber of the atomizing main pipe 11. Then, the computer's processing terminal controls the opening of the air inlet valve and air outlet valve of the discharge chamber 3, and activates the solenoid valve of the inert gas cylinder and the solenoid valve of the vacuum pump, allowing the atomized liquid to enter the discharge chamber 3.

[0068] S102, control the air inlet valve and air outlet valve of the discharge chamber 3 to close, and acquire the current and voltage signals of the atomized liquid in the discharge chamber 3 fed back by the detection probe, and establish the measured CVCs curve of the liquid to be tested.

[0069] During implementation, after the atomized liquid enters the discharge chamber 3, the inlet and outlet valves of the discharge chamber 3 are closed, and the voltage of the hollow cathode tube 31 in the discharge chamber 3 is gradually increased. The CVCs curve of the atomized liquid to be tested in the discharge chamber 3 is recorded. Here, the CVCs curve represents the plasma current-voltage characteristic curve in the atomized liquid, that is, the current-voltage characteristic curve collected by the current detection probe.

[0070] S103, based on the measured CVCs curve and the preset electron energy distribution function, establishes the current-voltage characteristic analysis curve after second differentiation.

[0071] In practice, the calculator's processing terminal converts the CVCs curve from a second-order differential function of voltage into an impurity analysis curve, which better highlights the curve's changes and characteristic points.

[0072] S104 captures the target electronic characteristic peak from the current-voltage characteristic analysis curve after second differentiation, and matches the impurity electron group with the target electronic characteristic peak from the pre-stored impurity distribution data table. The impurity distribution data table includes multiple impurity electron groups and the electronic characteristic peak corresponding to the impurity electron group.

[0073] In practice, the calculator's processing terminal pre-stores an impurity analysis data table, which reflects the correspondence between electronic characteristic peaks and impurity electron groups. Therefore, after the calculator's processing terminal captures the target electronic characteristic peak from the impurity analysis curve, it can identify the corresponding impurity electron group, thus facilitating the analysis and judgment of the current liquid component to be detected.

[0074] Optionally, in step 103, the following processing also exists, and the specific operation flow is as follows:

[0075] S201, based on the conversion of electron energy distribution function to generate second-order differential voltage function;

[0076] In practice, the electron energy distribution function is as follows:

[0077]

[0078] The second-order differential function of voltage is as follows:

[0079]

[0080] Where U is voltage, I e Let S represent electric charge, S represent electrode density, N represent electron density, and m represent electron mass.

[0081] S202. Based on the measured CVCs curve and the second-order voltage differential function, establish the current-voltage characteristic analysis curve after the second derivative.

[0082] In practice, the voltage and current values ​​corresponding to each characteristic point of the measured CVCs curve are projected from the second differential voltage function onto the current and voltage characteristic analysis curve after the second differential.

[0083] Optionally, prior to step 102, the following processing also occurs, with the specific operation flow as follows:

[0084] The current and voltage signals of the atomized liquid in the discharge chamber 3 fed back by the detection probe are obtained, and the test CVC curve of the liquid to be tested is established.

[0085] Capture the identifying characteristic peaks of the test CVCs curve.

[0086] In practice, after the atomizing device 1 atomizes the liquid to be tested, and before the inlet and outlet valves of the discharge chamber 3 are closed, the computer's processing terminal establishes a test CVCs curve with the test liquid based on the current and voltage signals fed back by the detection probe. This continues until a characteristic peak is identified in the test CVCs curve, at which point the inlet and outlet valves of the discharge chamber 3 are closed. By capturing the identified characteristic peak in the test CVCs curve, the performance and status of the discharge chamber 3 can be evaluated, and any other interference problems or abnormalities can be detected.

[0087] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A liquid atomization and component analysis system, characterized in that, It includes an atomizing device (1), a detection device, and a pulse voltage generating device (2). The atomizing device (1) is used to atomize the liquid to be tested, and the detection device detects the atomized liquid and outputs the detection result. The atomizing device (1) includes an atomizing main pipe (11) and an atomizing oscillation divider (12). The atomizing oscillation divider (12) divides the internal space of the atomizing main pipe (11) into a detection liquid receiving chamber (13) and an atomizing liquid flow chamber. The atomizing oscillation divider (12) includes a piezoelectric ceramic sheet (121), which has a plurality of atomizing holes. The surface of the piezoelectric ceramic sheet (121) is covered with a metal film, and the metal film on the surface of the piezoelectric ceramic sheet (121) is electrically connected to the pulse voltage generating device (2). The pulse voltage generating device (2) is used to provide a pulse voltage to the metal film on the surface of the piezoelectric ceramic sheet (121). It also includes an inert gas cylinder and a discharge chamber (3). The outlet of the inert gas cylinder is connected to the atomized liquid flow chamber in the atomizing main pipe (11), and the discharge chamber (3) is also connected to the atomized liquid flow chamber in the atomizing main pipe (11). The detection device includes a detection probe, which is used to detect the atomized liquid collected in the discharge chamber (3); A hollow cathode tube (31) is installed inside the discharge chamber (3), and the axis of the hollow cathode tube (31) is parallel to the gas flow direction inside the discharge chamber (3). The atomizing oscillation divider (12) also includes a sealing rubber (122). There are multiple piezoelectric ceramic sheets (121). The multiple piezoelectric ceramic sheets (121) are evenly spaced around the axis of the atomizing main pipe (11) to form a cylindrical structure. The two ends of the cylindrical structure are sealed with the sealing rubber (122). The inside of the cylindrical structure is configured as an atomizing liquid flow chamber. The cylindrical structure and the atomizing main pipe (11) are configured as a detection liquid receiving chamber (13).

2. The liquid atomization and component analysis system according to claim 1, characterized in that: The atomizing main pipe (11) is equipped with a first pipe body (14) and a second pipe body (15) at both ends, and the first pipe body (14) and the second pipe body (15) are simultaneously connected to the atomizing liquid flow chamber.

3. The liquid atomization and component analysis system according to claim 1, characterized in that: A third tube (16) is also fixedly installed on the atomizing main pipe (11), and the third tube (16) is connected to the detection liquid container (13).

4. The liquid atomization and component analysis system according to claim 1, characterized in that: The pulse voltage generating device (2) includes a driving circuit (22) and a pulse generating circuit (21). The pulse generating circuit (21) is used to generate a pulse signal. The driving circuit (22) is electrically connected to the pulse generating circuit (21) and converts the pulse signal into a pulse voltage. The output terminal of the driving circuit (22) is electrically connected to the metal film on the surface of the piezoelectric ceramic sheet (121) and is used to provide a pulse voltage to the metal film on the surface of the piezoelectric ceramic sheet (121).

5. A method for liquid atomization and component analysis, characterized in that, The system is applied to the liquid atomization and component analysis system as described in any one of claims 1-4, comprising: Based on the preset resonant frequency, a pulse control command is sent to the pulse voltage generating device (2), and the air inlet valve and exhaust valve of the discharge chamber (3) are controlled to open. The air inlet valve and the air outlet valve of the discharge chamber (3) are closed, and the current and voltage signals of the atomized liquid in the discharge chamber (3) fed back by the detection probe are obtained to establish the measured CVCs curve of the liquid to be tested. Based on the measured CVCs curves and the preset electron energy distribution function, a current-voltage characteristic analysis curve after second differentiation is established. Electronic characteristic peaks are captured from the current-voltage characteristic analysis curve after the second derivative, and corresponding impurity electron groups are matched from a pre-stored impurity distribution data table based on the electronic characteristic peaks. The impurity distribution data table includes multiple impurity electron groups and electronic characteristic peaks corresponding to the impurity electron groups.

6. The liquid atomization and component analysis method according to claim 5, characterized in that, The process of establishing the current-voltage characteristic analysis curve after second differentiation based on the measured CVCs curve and the preset electron energy distribution function includes: The second-order differential function of voltage is generated based on the electron energy distribution function. Based on the measured CVCs curve and the second-order voltage differential function, an analysis curve of the current-voltage characteristics after second-order differentiation is established.

7. The liquid atomization and component analysis method according to claim 6, characterized in that, Before closing the air inlet valve and the air outlet valve of the discharge chamber (3), and acquiring the current and voltage signals of the atomized liquid in the discharge chamber (3) fed back by the detection probe, and establishing the measured CVCs curve of the liquid to be tested, the following steps are also included: The current and voltage signals of the atomized liquid in the discharge chamber (3) fed back by the detection probe are obtained, and the test CVC curve of the liquid to be tested is established. Capture the identifying characteristic peaks of the test CVCs curves.

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