Fluorine content real-time detection and analysis system

Abstract

The utility model discloses a fluorine gas content real-time detection and analysis system, which comprises a sample gas circuit, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, wherein the sample gas circuit is provided with a sample gas inlet end and a sample gas outlet end; the reference gas circuit is provided with a reference gas inlet end and a reference gas outlet end which are opposite to each other and is used for feeding and discharging reference gas; the pretreatment device is respectively connected with the sample gas inlet end and the reference gas inlet end; the detection device is connected with the pretreatment device, is used for detecting the fluorine concentration and is connected with the sample gas outlet end and the reference gas outlet end; the PLC is used for controlling gas inlet and gas outlet of the sample gas path and the reference gas path; and the control computer is used for calculating and displaying the fluorine concentration detected by the detection device. The problems that manual sampling is adopted in existing fluorine content analysis and detection, the danger coefficient is large, and meanwhile the timeliness of detection information is poor are solved.

Description

Technical Field

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

[0002] Fluorine gas, the gaseous element of fluorine, presents a pale yellow color. It is a diatomic gas with strong irritation and corrosiveness, highly toxic, and extremely harmful to the human body and the environment. The chemical properties of fluorine gas are extremely active and it has extremely strong oxidizing properties. It can react with almost all organic and inorganic substances except perfluorinated compounds. As a strong oxidant and active gas, fluorine gas has wide applications in industries such as chemical engineering, pharmaceuticals, atomic energy industry, semiconductor manufacturing, and aviation. In the chemical engineering field, fluorine gas is an important raw material for preparing various fluorides. These fluorides have unique chemical properties and application values and are widely used in industries such as metal processing, electroplating, and glass manufacturing. For example, hydrogen fluoride, as an important chemical raw material, has wide applications in fields such as organic synthesis, inorganic synthesis, and fine chemical engineering. Sodium fluoride is widely used in the manufacture of ceramics, glass, enamel, pesticides, etc., providing key support for the development of these industries.

[0003] In the industrial production process, due to the toxicity and corrosiveness of fluorine gas, the accurate monitoring and control of its content become crucial, which is of great significance for ensuring production safety and preventing environmental pollution. Factories also need to adjust the ratio of production raw materials during the production process to achieve the purpose of reducing production costs and improving product quality.

[0004] Traditional methods for analyzing and detecting fluorine gas content are usually gas chromatography analysis. Laboratory gas chromatography analysis usually requires manual sampling, with a high risk factor, and there are also problems such as poor timeliness of detection information, which cannot meet the real-time and accurate monitoring requirements of modern industrial production. Content of the Utility Model

[0005] The utility model discloses a real-time detection and analysis system for fluorine gas content, which solves the problems of manual sampling in the existing analysis and detection of fluorine gas content, high risk factor, and poor timeliness of detection information.

[0006] A real-time detection and analysis system for fluorine gas content includes:

[0007] A sample gas path, having opposite sample gas inlet and outlet ends, for the inlet and outlet of sample gas;

[0008] A reference gas path, having opposite reference gas inlet and outlet ends, for the inlet and outlet of reference gas;

[0009] A pretreatment device, respectively connected to the sample gas inlet end and the reference gas inlet end;

[0010] The detection device is connected to the pretreatment device, used for detecting the fluorine gas concentration, and is connected to the sample gas outlet end and the reference gas outlet end;

[0011] The PLC controller is used for controlling the intake and outlet of the sample gas path and the reference gas path;

[0012] The control computer is used for calculating and displaying the fluorine gas concentration detected by the detection device.

[0013] 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 to directly draw gas, avoiding manual sampling; the control computer controls the pretreatment device to intake gas from the sample intake end and the reference intake end respectively; after the fluorine gas passes through the pretreatment device, it is transmitted by the pretreatment device to the detection device for detection, so as to obtain the concentration value, which can save the steps of manual sampling and testing, achieve real-time sampling, and improve timeliness.

[0014] The following also provides several optional methods, which are not additional limitations to the above overall solution, but only further supplements or optimizations. Without technical or logical contradictions, each optional method can be combined with the above overall solution alone, or multiple optional methods can be combined with each other.

[0015] Optionally, the detection device is equipped with a sample flow cell, and the sample flow cell includes a hollow tube, a visual window plate, an inlet pipeline, and an outlet pipeline. The visual window plates are distributed at both ends of the hollow tube and seal the hollow tube. One end of the inlet pipeline and the outlet pipeline communicates with the inside of the hollow tube.

[0016] Optionally, the sample flow cell further includes a temperature sensor and a pressure sensor. The temperature sensor is installed on one side of the surface of the hollow tube close to the inlet pipeline, and the pressure sensor is installed on one side of the surface of the hollow tube close to the outlet pipeline.

[0017] Optionally, the pretreatment device has a first pretreatment pipeline, and the first pretreatment pipeline includes an intake valve, a filter, a pressure regulating valve, and an adjustable flowmeter connected in sequence. The intake valve is connected to the sample intake end, and the adjustable flowmeter is connected to the detection device.

[0018] Optionally, the pretreatment device further has a second pretreatment pipeline, and the second pretreatment pipeline has the same structure as the first pretreatment pipeline. One end of the second pretreatment pipeline is connected to the reference intake end, and the other end is connected to the detection device.

[0019] Optionally, the detection device is respectively provided with a sample gas inlet interface, a reference gas inlet interface, a sample gas outlet interface, and a reference gas outlet interface. The sample gas inlet interface and the reference gas inlet interface are respectively connected to corresponding pretreatment pipelines. The sample gas outlet interface is connected to the sample gas outlet end, and the reference gas outlet interface is connected to the reference gas outlet end.

[0020] Optionally, an outlet valve is provided at both the sample gas outlet end and the reference gas outlet end to control the gas outlet of the sample gas outlet end and the reference gas outlet end.

[0021] The beneficial effects of the present application are as follows:

[0022] 1. The present 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.

[0023] 2. The present application directly sets up a sample gas path and a reference gas path for directly sampling fluorine gas, eliminating the manual sampling step and reducing the operation risk. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] Figure 2 is a schematic structural diagram of the detection device in the present utility model;

[0026] Figure 3 is a schematic structural diagram of the sample flow cell in the present utility model;

[0027] Figure 4 is a schematic diagram of the gas path structure of the present utility model.

[0028] The descriptions of the reference numerals in the drawings are as follows:

[0029] 1. Sample gas path; 11. Sample gas inlet end; 12. Sample gas outlet end; 2. Reference gas path; 21. Reference gas inlet end; 22. Reference gas outlet end; 3. PLC controller; 4. Control computer;

[0030] 100. Detection device; 101. Sample gas inlet interface; 102. Reference gas inlet interface; 103. Sample gas outlet interface 104. Reference gas outlet interface;

[0031] 200. Pretreatment device; 201. Inlet valve; 202. Filter; 203. Pressure regulating valve; 204 Adjustable flowmeter; 205. Outlet valve;

[0032] 300. Sample flow cell; 301. Hollow tube; 302. Temperature sensor; 303. Pressure sensor; 304. Visual window plate; 305. Inlet pipeline; 306. Outlet pipeline. Specific implementation method

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0034] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] Reference Figures 1 to 4 , in an embodiment of the present application, a real-time detection and analysis system for fluorine gas content is disclosed, 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. Among them, both the sample gas path 1 and the reference gas path 2 are connected to the pretreatment device 200 and the detection device 100. The PLC controller 3 controls the pretreatment device 200 to sample air intake 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 performs analysis and calculation and then displays the fluorine gas concentration value.

[0037] Furthermore, to form a detection device for automatically extracting fluorine gas for detection. The sample gas path 1 has opposite sample air intake end 11 and sample air outlet end 12 for intake and outlet of sample gas. The reference gas path 2 has opposite reference air intake end 21 and reference air outlet end 22 for intake and outlet of reference gas. The pretreatment device 200 is respectively connected to the sample air intake end 11 and the reference air intake end 21. The detection device 100 is located downstream of the pretreatment device 200 and is connected to the sample air outlet end 12 and the reference air outlet end 22.

[0038] It should be noted that there are no restrictions on the models and specifications of the PLC controller 3 and the control computer 4 in this application. Among them, the PLC controller 3 is used to control the opening and closing of the gas circuit set in the pretreatment device 200, and the control computer 4 is used to cooperate with the detection device 100 to obtain and display the concentration value. Both of them can be normally obtained through market procurement.

[0039] Reference Figure 3 , in some embodiments, the detection device 100 is provided with a sample flow cell 300. The sample flow cell includes a hollow tube 301, a visual window sheet 304, an inlet gas pipeline 305, and an outlet gas pipeline 306. The visual window sheets 304 are respectively arranged at both ends of the hollow tube 301 and are oppositely arranged. The visual window sheet 304 can seal the hollow tube 301 to form a chamber for storing fluorine gas in the hollow tube 301. One end of the inlet gas pipeline 305 and the outlet gas pipeline 306 communicates with the inside of the hollow tube 301 for inputting or outputting fluorine gas to the chamber.

[0040] Furthermore, the sample flow cell further includes a temperature sensor 302 and a pressure sensor 303. The temperature sensor 302 is installed on the surface of the hollow tube 301 near the inlet gas pipeline 305, and the pressure sensor 303 is installed on the surface of the hollow tube 301 near the outlet gas pipeline 306 for detecting the air pressure and temperature in the above chamber, so that the air pressure and temperature in the chamber are at a unified value during each detection.

[0041] Reference Figure 4 , in an embodiment of the present application, the pretreatment device 200 has a first pretreatment pipeline. The first pretreatment pipeline includes an intake valve 201, a filter 202, a pressure regulating valve 203, and an adjustable flowmeter 204 connected in sequence. The intake valve 201 is connected to the sample intake end 11, and the adjustable flowmeter 204 is connected to the detection device 100.

[0042] Furthermore, the pretreatment device 200 further has a second pretreatment pipeline. The second pretreatment pipeline has the same structure as the first pretreatment pipeline. One end of the second pretreatment pipeline is connected to the reference intake end 21, and the other end is connected to the detection device 100.

[0043] The second pretreatment pipeline and the first pretreatment pipeline can be interchanged without affecting the function of the equipment.

[0044] Reference Figure 2 , the detection device 100 is respectively provided with a sample gas intake interface 101, a reference gas intake interface 102, a sample gas outlet interface 103, and a reference gas outlet interface 104. The sample gas intake interface 101 and the reference gas intake interface 102 are respectively connected to the corresponding pretreatment pipelines. The sample gas outlet interface 103 is connected to the sample outlet end 12, and the reference gas outlet interface 104 is connected to the reference outlet end 22.

[0045] Further, an air outlet valve 205 is provided at both the sample air outlet end 12 and the reference air outlet end 22 to control the air outlet of the sample air outlet end 12 and the reference air outlet end 22.

[0046] Combined with Figures 1 to 4 As shown, the working principle of this device is as follows:

[0047] Rapid sample replacement:

[0048] After starting the device, open the intake valve 201, filter 202, pressure regulating valve 203, adjustable flowmeter 204, and air outlet valve 205 on the first pretreatment pipeline corresponding to the sample gas path 1. The fluorine gas sample enters the pretreatment device 200 through the reference intake end 21 and undergoes necessary pretreatment steps. The pretreated sample gas quickly enters the intake pipeline 305 and directly flows into the sample flow cell 300; the reference gas enters the second pretreatment pipeline in the same way.

[0049] Wait for a period of time until the sample flow cell 300 is filled with the newly replaced fluorine gas sample and the reference gas, and then start sample detection.

[0050] Continuous sample detection:

[0051] The temperature sensor 302 and the pressure sensor 303 continuously monitor and adjust the temperature and pressure inside the sample flow cell 300 to ensure that they are within the set range. When the temperature and pressure reach the set values, the light source inside the detection device 100 starts to work and emits a light beam with a specific wavelength. The light beam passes through the visual window plates 304 at both ends of the sample flow cell 300 and interacts with the sample gas.

[0052] The light source emission port inside the detection device 100 emits a light beam with a specified wavelength. The light beam passes through the visual window plates 304 at both ends of the sample flow cell 300. The detection device 100 converts the received optical 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 and can also be transmitted to a specified system through various signals.

[0053] During the entire detection process, the system will continuously perform sample detection and update the results in real time as needed. This continuous monitoring method ensures the accuracy and real-time nature of the fluorine gas content.

[0054] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as within the scope described in this specification. When the technical features in different embodiments are embodied in the same drawing, it can be regarded that the drawing also discloses the combined examples of the various embodiments involved.

[0055] The above embodiments only represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application.

Claims

1. A real-time detection and analysis system for fluorine gas content, characterized in that, Comprising: A sample gas path (1) having opposite sample gas inlet end (11) and sample gas outlet end (12) for inlet and outlet of sample gas; A reference gas path (2) having opposite reference gas inlet end (21) and reference gas outlet end (22) for inlet and outlet of reference gas; A pretreatment device (200) respectively connected to the sample gas inlet end (11) and the reference gas inlet end (21); A detection device (100) connected to the pretreatment device (200) for detecting the concentration of fluorine gas and connected to the sample gas outlet end (12) and the reference gas outlet end (22); A PLC controller (3) for controlling the inlet and outlet of the sample gas path (1) and the reference gas path (2); A control computer (4) for calculating and displaying the concentration of fluorine gas detected by the detection device (100).

2. The real-time detection and analysis system for fluorine gas content according to claim 1, characterized in that, The detection device (100) is provided with a sample flow cell (300), and the sample flow cell includes a hollow tube (301), a visual window plate (304), an inlet gas pipeline (305), and an outlet gas pipeline (306). The visual window plates (304) are distributed at both ends of the hollow tube (301) and enclose the hollow tube (301). One end of the inlet gas pipeline (305) and the outlet gas pipeline (306) communicates with the inside of the hollow tube (301).

3. The real-time detection and analysis system for fluorine gas content according to claim 2, wherein, The sample flow cell further includes a temperature sensor (302) and a pressure sensor (303). The temperature sensor (302) is installed on the surface of the hollow tube (301) close to the inlet gas pipeline (305), and the pressure sensor (303) is installed on the surface of the hollow tube (301) close to the outlet gas pipeline (306).

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

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

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

7. The real-time detection and analysis system for fluorine gas content according to claim 6, characterized in that Outlet valves (205) are provided at both the sample gas outlet end (12) and the reference gas outlet end (22) for controlling the outlet of the sample gas outlet end (12) and the reference gas outlet end (22).

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