Real-time measurement and analysis system for fluorine gas content

Abstract

Disclosed in the present utility model is a real-time measurement and analysis system for fluorine gas content, the system comprising: a sample gas circuit, which has a sample gas intake end and a sample gas output end opposite each other and is used for the intake and output of a sample gas; a reference gas circuit, which has a reference gas intake end and a reference gas output end opposite each other and is used for the intake and output of a reference gas; a pretreatment device, which is connected to both the sample gas intake end and the reference gas intake end; a measurement device, which is connected to the pretreatment device and used for measuring fluorine gas concentration, and is connected to the sample gas output end and the reference gas output end; a PLC controller, which is used for controlling the gas intake and output in the sample gas circuit and the reference gas circuit; and a control computer, which is used for calculating and displaying the fluorine gas concentration measured by the measurement device. The problems of a high level of risk and the poor timeliness of measurement information during manual sampling in existing fluorine gas content analysis and measurement are solved.

Description

A real-time detection and analysis system for fluorine content Technical Field

[0001] This utility model relates to the field of gas analysis technology, and in particular to a real-time detection and analysis system for fluorine content. Background Technology

[0002] Fluorine, the gaseous element of fluorine, is pale yellow and a highly toxic diatomic gas with strong irritant and corrosive properties, posing a significant threat to human health and the environment. Fluorine is chemically extremely reactive, possessing strong oxidizing properties; it can react with almost all organic and inorganic substances, except for perfluorinated compounds. As a strong oxidizing agent and reactive gas, fluorine has wide applications in industries such as chemical engineering, pharmaceuticals, nuclear energy, semiconductor manufacturing, and aerospace. In the chemical industry, fluorine is an important raw material for the preparation of various fluorides. These fluorides possess unique chemical properties and applications, and are widely used in metal processing, electroplating, and glass manufacturing. For example, hydrogen fluoride, as an important chemical raw material, has wide applications in organic synthesis, inorganic synthesis, and fine chemicals. Sodium fluoride is widely used in the manufacture of ceramics, glass, enamel, and pesticides, providing crucial support for the development of these industries.

[0003] In industrial production, the toxicity and corrosiveness of fluorine make the accurate monitoring and control of its content crucial. This is of great significance for ensuring production safety and preventing environmental pollution. Factories also need to adjust the ratio of raw materials during production to reduce production costs and improve product quality.

[0004] Traditional methods for analyzing and detecting fluorine content typically involve gas chromatography. Laboratory gas chromatography analysis usually requires manual sampling, which carries a high risk factor and suffers from poor timeliness of detection information, failing to meet the real-time and accurate monitoring needs of modern industrial production.

[0005] Utility Model Content

[0006] This utility model discloses a real-time fluorine content detection and analysis system, which solves the problems of manual sampling, high risk factor and poor timeliness of detection information in existing fluorine content analysis and detection.

[0007] A real-time fluorine content detection and analysis system, comprising:

[0008] The sample gas path has a sample inlet and a sample outlet, which are used for the inlet and outlet of sample gas.

[0009] The reference gas path has a reference inlet end and a reference outlet end, which are used for the intake and exhaust of reference gas;

[0010] The pretreatment device is connected to the sample inlet and the reference inlet, respectively;

[0011] The detection device is connected to the pretreatment device and is used to detect the fluorine concentration. It is also connected to the sample outlet and the reference outlet.

[0012] The PLC controller is used to control the inlet and outlet of the sample gas path and the reference gas path;

[0013] A control computer is used to calculate and display the concentration of fluorine gas detected by the detection device.

[0014] In this application, the sample gas path and the reference gas path are directly connected to the sample gas source and the reference gas source for direct gas sampling, avoiding manual sampling; the control computer controls the pretreatment device to introduce gas from the sample gas inlet and the reference gas inlet respectively; after passing through the pretreatment device, the fluorine gas is transferred to the detection device for detection to obtain the concentration value, which eliminates the step of manual sampling and testing, and can achieve real-time sampling and improve timeliness.

[0015] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0016] Optionally, the detection device includes a sample flow cell, which comprises a hollow tube, a viewing window, an inlet pipe, and an outlet pipe. The viewing window is distributed at both ends of the hollow tube and closes the hollow tube. One end of the inlet pipe and the outlet pipe is connected to the interior of the hollow tube.

[0017] Optionally, the sample flow cell further includes a temperature sensor and a pressure sensor. The temperature sensor is installed on the side of the hollow tube near the surface of the inlet pipe, and the pressure sensor is installed on the side of the hollow tube near the surface of the outlet pipe.

[0018] Optionally, the pretreatment device has a first pretreatment pipeline, which includes an air inlet valve, a filter, a pressure regulating valve, and an adjustable flow meter connected in sequence. The air inlet valve is connected to the sample air inlet, and the adjustable flow meter is connected to the detection device.

[0019] Optionally, the pretreatment device further includes a second pretreatment pipeline, which has the same structure as the first pretreatment pipeline. One end of the second pretreatment pipeline is connected to the reference air inlet, and the other end is connected to the detection device.

[0020] Optionally, the detection device is equipped with a sample gas inlet port, a reference gas inlet port, a sample gas outlet port, and a reference gas outlet port. The sample gas inlet port and the reference gas inlet port are respectively connected to the corresponding pretreatment pipelines. The sample gas outlet port is connected to the sample outlet port, and the reference gas outlet port is connected to the reference outlet port.

[0021] Optionally, both the sample outlet and the reference outlet are equipped with outlet valves to control the gas output from the sample outlet and the reference outlet.

[0022] The beneficial effects of this application are as follows:

[0023] 1. This application uses a PLC controller to control the pretreatment device to sample fluorine gas in the sample gas path in real time, which is beneficial to improving the timeliness of concentration value detection.

[0024] 2. This application directly sets up a sample gas path and a reference gas path for direct fluorine gas sampling, eliminating the need for manual sampling and reducing operational risks. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the structure of this utility model;

[0026] Figure 2 is a schematic diagram of the detection device in this utility model;

[0027] Figure 3 is a schematic diagram of the sample flow cell in this utility model;

[0028] Figure 4 is a schematic diagram of the gas path structure of this utility model.

[0029] The following are explanations of the reference numerals in the diagram: 1. Sample gas path; 11. Sample inlet; 12. Sample outlet; 2. Reference gas path; 21. Reference inlet; 22. Reference outlet; 3. PLC controller; 4. Control computer; 100. Detection device; 101. Sample gas inlet interface; 102. Reference gas inlet interface; 103. Sample gas outlet interface; 104. Reference gas outlet interface; 200. Pretreatment device; 201. Inlet valve; 202. Filter; 203. Pressure regulating valve; 204. Adjustable flow meter; 205. Outlet valve; 300. Sample flow cell; 301. Hollow tube; 302. Temperature sensor; 303. Pressure sensor; 304. Viewing window; 305. Inlet pipe; 306. Outlet pipe.

[0030] Specific implementation methods

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Referring to Figures 1 to 4, an embodiment of this application discloses a real-time fluorine content detection and analysis system, including: a sample gas path 1, a reference gas path 2, a pretreatment device 200, a detection device 100, a PLC controller 3, and a control computer 4. The sample gas path 1 and the reference gas path 2 are both connected to the pretreatment device 200 and the detection device 100. The PLC controller 3 controls the pretreatment device 200 to sample gas from the sample gas path 1 and the reference gas path 2. The detection device 100 detects the gas after passing through the pretreatment device 200, and the control computer 4 analyzes and calculates the fluorine concentration value, displaying the result.

[0035] Furthermore, this constitutes a detection device for automatically extracting and detecting fluorine gas. Sample gas path 1 has a sample inlet end 11 and a sample outlet end 12 for the intake and exhaust of sample gas. Reference gas path 2 has a reference inlet end 21 and a reference outlet end 22 for the intake and exhaust of reference gas. Pretreatment device 200 is connected to sample inlet end 11 and reference inlet end 21, respectively. Detection device 100 is located downstream of pretreatment device 200 and is connected to sample outlet end 12 and reference outlet end 22.

[0036] It should be noted that there are no model or specification restrictions on the PLC controller 3 and control computer 4 in this application. The PLC controller 3 is used to control the on / off state of the gas path set within the pretreatment device 200, and the control computer 4 is used to cooperate with the detection device 100 to acquire and display concentration values. Both can be obtained normally through market procurement.

[0037] Referring to Figure 3, in some embodiments, the detection device 100 includes a sample flow cell 300, which comprises a hollow tube 301, a viewing window 304, an inlet pipe 305, and an outlet pipe 306. The viewing window 304 is respectively disposed at both ends of the hollow tube 301 and is arranged opposite to each other. The viewing window 304 can close the hollow tube 301, forming a chamber for storing fluorine gas in the hollow tube 301. One end of the inlet pipe 305 and the outlet pipe 306 are connected to the interior of the hollow tube 301 for inputting or outputting fluorine gas into or out of the chamber.

[0038] Furthermore, the sample flow cell also includes a temperature sensor 302 and a pressure sensor 303. The temperature sensor 302 is installed on the side of the hollow tube 301 near the surface of the inlet pipe 305, and the pressure sensor 303 is installed on the side of the hollow tube 301 near the surface of the outlet pipe 306. These sensors are used to detect the air pressure and temperature in the chamber, ensuring that the air pressure and temperature in the chamber are at a uniform value during each test.

[0039] Referring to Figure 4, in one embodiment of this application, the pretreatment device 200 has a first pretreatment pipeline, which includes an air inlet valve 201, a filter 202, a pressure regulating valve 203, and an adjustable flow meter 204 connected in sequence. The air inlet valve 201 is connected to the sample air inlet 11, and the adjustable flow meter 204 is connected to the detection device 100.

[0040] Furthermore, the pretreatment device 200 also has a second pretreatment pipeline, which has the same structure as the first pretreatment pipeline. One end of the second pretreatment pipeline is connected to the reference air inlet 21, and the other end is connected to the detection device 100.

[0041] The second pretreatment pipeline is interchangeable with the first pretreatment pipeline and does not affect the function of the equipment.

[0042] Referring to Figure 2, the detection device 100 is equipped with a sample gas inlet port 101, a reference gas inlet port 102, a sample gas outlet port 103, and a reference gas outlet port 104. The sample gas inlet port 101 and the reference gas inlet port 102 are respectively connected to the corresponding pretreatment pipelines. The sample gas outlet port 103 is connected to the sample outlet port 12, and the reference gas outlet port 104 is connected to the reference outlet port 22.

[0043] Furthermore, both the sample outlet 12 and the reference outlet 22 are equipped with outlet valves 205 to control the outlet of gas from the sample outlet 12 and the reference outlet 22.

[0044] Referring to Figures 1 to 4, the working principle of this device is as follows:

[0045] Rapid sample replacement:

[0046] After starting the equipment, open the inlet valve 201, filter 202, pressure regulating valve 203, adjustable flow meter 204, and outlet valve 205 on the first pretreatment pipeline corresponding to sample gas path 1. The fluorine sample enters the pretreatment device 200 through the reference inlet 21 for necessary pretreatment steps. After pretreatment, the sample gas quickly enters the inlet pipeline 305 and flows directly into the sample flow cell 300; the reference gas similarly enters the second pretreatment pipeline.

[0047] After waiting for a period of time until the sample flow cell 300 is filled with the newly replaced fluorine sample and reference gas, the sample testing will begin.

[0048] Continuous sample testing:

[0049] Temperature sensor 302 and pressure sensor 303 monitor and adjust the temperature and pressure within the sample flow cell 300 in real time to ensure they remain within the set range. Once the temperature and pressure reach the set values, the light source inside the detection device 100 starts operating, emitting a beam of light of a specific wavelength. The beam passes through the viewing windows 304 at both ends of the sample flow cell 300 and interacts with the sample gas.

[0050] The light source inside the detection device 100 emits a light beam of a specified wavelength. The light beam passes through the visible windows 304 at both ends of the sample flow cell 300. The detection device 100 converts the received light signal into an electrical signal and amplifies it. The amplified electrical signal enters the signal processing unit, and the content of fluorine gas is calculated using a specific algorithm. The final result is displayed on the control computer 4, or it can be transmitted to a designated system through various signals.

[0051] Throughout the testing process, the system continuously analyzes the sample and updates the results in real time as needed. This continuous monitoring ensures the accuracy and real-time nature of the fluoride content.

[0052] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0053] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are quite specific and detailed. However, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A real-time fluorine content detection and analysis system, characterized in that, include: The sample gas path (1) has a sample gas inlet end (11) and a sample gas outlet end (12) for the inlet and outlet of sample gas. The reference gas path (2) has a reference gas inlet end (21) and a reference gas outlet end (22) for the inlet and outlet of reference gas; A pretreatment device (200) is connected to the sample inlet (11) and the reference inlet (21) respectively; The detection device (100) is connected to the pretreatment device (200) for detecting the concentration of fluorine gas, and is connected to the sample outlet (12) and the reference outlet (22). The PLC controller (3) is used to control the inlet and outlet of the sample gas path (1) and the reference gas path (2); A control computer (4) is used to calculate and display the concentration of fluorine gas detected by the detection device (100).

2. The real-time fluorine content detection and analysis system according to claim 1, characterized in that, The detection device (100) includes a sample flow cell (300), which includes a hollow tube (301), a viewing window (304), an air inlet pipe (305), and an air outlet pipe (306). The viewing window (304) is distributed at both ends of the hollow tube (301) and closes the hollow tube (301). One end of the air inlet pipe (305) and the air outlet pipe (306) are connected to the interior of the hollow tube (301).

3. The real-time fluorine content detection and analysis system according to claim 2, characterized in that, The sample flow cell also includes a temperature sensor (302) and a pressure sensor (303). The temperature sensor (302) is installed on the side of the hollow tube (301) near the surface of the inlet pipe (305), and the pressure sensor (303) is installed on the side of the hollow tube (301) near the surface of the outlet pipe (306).

4. The real-time fluorine content detection and analysis system according to claim 1, characterized in that, The pretreatment device (200) has a first pretreatment pipeline, which includes an air inlet valve (201), a filter (202), a pressure regulating valve (203), and an adjustable flow meter (204) connected in sequence. The air inlet valve (201) is connected to the sample air inlet (11), and the adjustable flow meter (204) is connected to the detection device (100).

5. The real-time fluorine content detection and analysis system according to claim 4, characterized in that, The pretreatment device (200) also has a second pretreatment pipeline, which has the same structure as the first pretreatment pipeline. One end of the second pretreatment pipeline is connected to the reference air inlet (21), and the other end is connected to the detection device (100).

6. The real-time fluorine content detection and analysis system according to claim 5, characterized in that, The detection device (100) is equipped with a sample gas inlet port (101), a reference gas inlet port (102), a sample gas outlet port (103), and a reference gas outlet port (104). The sample gas inlet port (101) and the reference gas inlet port (102) are respectively connected to the corresponding pretreatment pipelines. The sample gas outlet port (103) is connected to the sample outlet end (12), and the reference gas outlet port (104) is connected to the reference outlet end (22).

7. The real-time fluorine content detection and analysis system according to claim 6, characterized in that, Both the sample outlet (12) and the reference outlet (22) are equipped with outlet valves (205) to control the outlet of the sample outlet (12) and the reference outlet (22).

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