Chemiluminescence detection device and its usage method

Abstract

This invention discloses a chemiluminescence detection device and its method of use. The chemiluminescence detection device includes: a flow component, a reaction component, and a detection component; the flow component includes a lower shell, a liquid passage pipe, and a gas passage pipe, the liquid passage pipe and the gas passage pipe being disposed on the lower shell; the reaction component includes a reaction shell, a light window, a reaction bed, a sealing gasket, and a fixing column, the light window, the reaction bed, and the fixing column being disposed on the reaction shell, and the reaction shell being disposed on the sealing gasket; the detection component includes an upper shell, a sensor, and a sealing window, the sensor and the sealing window being disposed on the upper shell; wherein, the sealing gasket is disposed on the lower shell, and the upper shell is disposed on the lower shell. This invention achieves good airtightness, no liquid residue or leakage, and stable and reliable detection results.

Description

Technical Field

[0001] This invention relates to the field of detection technology, and in particular to a chemiluminescence detection device and its usage method. Background Technology

[0002] Chemiluminescence detection technology at the gas-liquid phase flow interface is a highly sensitive method for detecting trace gases and has been successfully applied to the online rapid detection of trace gases such as nitrogen dioxide, ozone, sulfur dioxide, formaldehyde, carbon dioxide, and hydrogen peroxide in the atmosphere. In previous designs, the reaction bed needed to be manually installed at the bottom of the reaction chamber, resulting in limited flatness after installation and difficulty in ensuring consistent detection results. Furthermore, the detection device also suffers from numerous problems regarding airtightness, pipeline connection, and leakage. Patent document ZL201610308973.0 also points out that the currently used gas-liquid phase chemiluminescence detector suffers from poor stability and reliability due to unreasonable structural design, making it difficult to use in long-term atmospheric monitoring activities. The technical problem this invention aims to solve is how to design a detection device with good airtightness, no liquid residue or leakage, and stable and reliable detection results. Summary of the Invention

[0003] This invention provides a chemiluminescence detection device and its usage method, achieving good airtightness, no liquid residue or leakage, and stable and reliable detection results.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides a chemiluminescence detection device, comprising: a flow component, a reaction component, and a detection component;

[0006] The flow assembly includes a lower shell, a liquid passage pipe, and a gas passage pipe, wherein the liquid passage pipe and the gas passage pipe are disposed on the lower shell;

[0007] The reaction assembly includes a reaction shell, a light window, a reaction bed, a sealing gasket, and a fixing column. The light window, the reaction bed, and the fixing column are disposed on the reaction shell, and the reaction shell is disposed on the sealing gasket.

[0008] The detection assembly includes an upper shell, a sensor, and a sealing window, wherein the sensor and the sealing window are disposed on the upper shell;

[0009] The sealing gasket is disposed on the lower shell, and the upper shell is disposed on the lower shell.

[0010] Furthermore, the air passage has a multi-bend structure.

[0011] Furthermore, the bends in the gas pipe are designed as arc-shaped surfaces.

[0012] Furthermore, both the airflow channel and the water flow channel are U-shaped channels, with the airflow channel arranged outside the water flow channel.

[0013] Furthermore, airflow expansion sections are respectively provided on both sides of the viewing window of the airflow channel.

[0014] Furthermore, the inner surface of the lower shell is provided with two first grooves and two second grooves, the liquid passage pipe is connected to the corresponding first groove, and the gas passage pipe is connected to the corresponding second groove;

[0015] The reaction shell is provided with two first plugs and two second plugs. The water flow channel is connected between the two first plugs, and the air flow channel is connected between the two second plugs. The first plugs are inserted into the corresponding first grooves, and the second plugs are inserted into the corresponding second grooves.

[0016] Furthermore, a connecting seat is provided on the outer surface of the lower shell, a potting groove is formed in the connecting seat, an insertion hole is provided in the potting groove, and a through hole communicating with the potting groove is provided on one side of the connecting seat. The liquid pipe is inserted into the potting groove and into the insertion hole through the through hole. Epoxy resin is provided in the potting groove.

[0017] Furthermore, the sealing gasket is provided with mounting holes, and the fixing post is disposed in the mounting holes of the sealing gasket.

[0018] Furthermore, the upper shell is provided with a mounting groove, the sensor is disposed in the mounting groove, and the sealing window covers the mounting groove.

[0019] The present invention also provides a method of using the above-mentioned chemiluminescence detection device, wherein one gas line is connected to a vacuum pump, another gas line is connected to a sampling head, two liquid lines are respectively connected to peristaltic pumps, one peristaltic pump is connected to a detection liquid container, and the other peristaltic pump is connected to a waste liquid container.

[0020] The method of use includes starting a vacuum pump to collect the gas to be detected through a sampling head. The gas to be detected enters the gas flow channel. At the same time, two peristaltic pumps start, allowing the detection solution to enter the water flow channel and wet the reaction bed. A liquid film of the detection liquid is formed on the surface of the reaction bed and comes into contact with the gas to be detected, resulting in a gas-liquid interface chemiluminescence reaction. The light signal is collected by a sensor.

[0021] The technical solution of this invention has the following advantages over the prior art: The liquid and gas pipes on the lower shell facilitate the entry of gas and liquid while preventing light from entering, thus improving the stability of the detection results. The reaction bed on the reaction shell facilitates the formation of a liquid film, thereby facilitating the chemical reaction between gas and liquid. The light window on the reaction shell facilitates the transmission of light generated by the chemical reaction between gas and liquid, thus facilitating sensor detection. The fixing post on the reaction shell facilitates the positioning between the reaction shell and the sealing gasket, thus facilitating the installation of the reaction shell and improving the sealing performance between the reaction shell and the sealing gasket. The sealing gasket on the lower shell facilitates the connection between the reaction shell and the liquid and gas pipes, eliminating the need for joints and improving the sealing performance of the detection device. To prevent liquid residue and leakage, a sensor mounted on the upper shell enables the detection of chemiluminescence in liquids and gases. Gases and liquids enter the reaction chamber through gas and liquid passages, respectively. Streamlined bends in the gas and liquid passages improve the smoothness of gas and liquid flow while isolating external light and light transmitted through the gas and liquid passages from interfering with the detection results, thus improving accuracy. The reaction shell is fitted onto the gas and liquid passages with a sealing gasket, eliminating the need for joints and improving the sealing of the detection device to prevent liquid residue and leakage. Liquids and gases flow parallel to each other in opposite directions within the reaction shell. The liquid forms a liquid film on the reaction bed, and the gas undergoes a chemiluminescence reaction to produce light. The light passes through the light window and the sealing window to enter the sensor, enabling the detection of chemiluminescence in both gases and liquids. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the chemiluminescence detection device of the present invention;

[0023] Figure 2 This is a schematic diagram of the reaction components in the chemiluminescence detection device of the present invention;

[0024] Figure 3 This is a schematic diagram of the flow component in the chemiluminescence detection device of the present invention;

[0025] Figure 4 This is an assembly diagram of the lower shell and reaction shell in the chemiluminescence detection device of the present invention;

[0026] Figure 5 This is a schematic diagram of the reaction shell structure in the chemiluminescence detection device of the present invention;

[0027] Figure 6 This is a cross-sectional view of the reaction shell in the chemiluminescence detection device of the present invention;

[0028] Figure 7 This is a partial cross-sectional view of the lower shell of the chemiluminescence detection device of the present invention.

[0029] Figure label:

[0030] Flow component 1;

[0031] Lower shell 11, liquid line pipe 12, gas line pipe 13;

[0032] Reaction component 2;

[0033] 21. Reaction shell; 22. Light window; 23. Reaction bed; 24. Sealing gasket; 25. Fixing column;

[0034] Detection component 3;

[0035] 31. Upper shell, 32. Sensor, 33. Sealing window. Detailed Implementation

[0036] like Figures 1-7 As shown, the present invention provides a chemiluminescence detection device, comprising: a flow component 1, a reaction component 2, and a detection component 3;

[0037] The flow assembly 1 includes a lower shell 11, a liquid passage pipe 12 and a gas passage pipe 13, with the liquid passage pipe 12 and the gas passage pipe 13 disposed on the lower shell 11;

[0038] The reaction assembly 2 includes a reaction shell 21, a light window 22, a reaction bed 23, a sealing gasket 24, and a fixing column 25. The reaction shell is provided with a water flow channel 211 and a gas flow channel 212. A through hole (unmarked) is provided between the water flow channel and the gas flow channel. A viewing window 213 is provided at the top of the gas flow channel. The reaction bed is located in the water flow channel and is disposed in the through hole. The light window is disposed in the viewing window. The fixing column is disposed at the bottom of the reaction shell. The reaction shell is disposed on the sealing gasket.

[0039] The detection component 3 includes an upper shell 31, a sensor 32, and a sealing window 33, with the sensor 32 and the sealing window 33 disposed on the upper shell 31;

[0040] The sealing gasket is disposed on the lower shell, the upper shell is disposed on the lower shell, the sealing window and the light window are arranged opposite to each other, the two ends of the water flow channel are respectively connected to the liquid pipe, and the two ends of the air flow channel are respectively connected to the air pipe.

[0041] Specifically, the liquid pipe 12 and the gas pipe 13 are installed on the lower shell 11. The gas pipe 13 and the liquid pipe 12 can be connected to an external gas pipe. Gas and liquid enter the detection device through the gas pipe 13 and the liquid pipe 12 respectively, realizing the introduction of gas and liquid. The sealing gasket 24 is installed on the lower shell 11, and the reaction shell 21 is installed on the sealing gasket 24. The reaction shell 21 is installed on the lower shell 11 in a plug-in manner through the sealing gasket 24. The reaction bed 23 is installed on the reaction shell 21. When the gas and liquid reach the reaction bed 23, the liquid generates a liquid film on the reaction bed 23, and the gas and liquid undergo a light-emitting reaction. The generated light enters the sensor 32 through the light window and the sealing window. The sensor detects the light, realizing the detection of chemiluminescence.

[0042] The fixing column 25 is set on the reaction shell 21, and the reaction shell 21 is set on the sealing gasket 24. The fixing column 25 is inserted into the sealing gasket 24, which makes the sealing gasket 24 and the reaction shell 21 more stable, which facilitates the sealing of the reaction component. At the same time, it facilitates the positioning between the sealing gasket 24 and the reaction shell 21, enhances the sealing performance of the reaction component, and allows gas and liquid to enter the reaction shell 21 more smoothly and reliably, thereby facilitating the reaction of gas and liquid.

[0043] Furthermore, during the actual disassembly and assembly process, the lower shell, reaction shell, and upper shell adopt a split structure and are connected together by insert, which facilitates later disassembly to replace and repair the reaction bed on the reaction shell.

[0044] Furthermore, the gas pipe 13 has a multi-bend structure.

[0045] Specifically, the multiple bends in the gas pipe 13 create numerous corners during gas flow, effectively isolating external light and light transmitted through the gas pipe 13 from interfering with the detection results and improving accuracy. The bends in the gas pipe are designed as arc-shaped surfaces to enhance gas flow smoothness.

[0046] Gas pipe 13 and liquid pipe 12 are respectively located at both ends of the lower shell 11. Gas and liquid enter and exit from the gas pipe 13 and liquid pipe 12 in opposite directions, which facilitates the gas and liquid to enter the reaction shell 21 for full reaction.

[0047] The liquid passage 12 can be made of polytetrafluoroethylene capillary tube and installed in the lower shell 11, which is beneficial to the sealing and leak prevention of the liquid passage 12. The first end of the liquid passage 12 extends to the water flow channel of the reaction shell 21. The external liquid passage can be installed at the second end of the liquid passage 12, which facilitates the connection between the liquid passage 12 and the reaction shell 21 and the external elastic liquid passage, and at the same time, facilitates the leak prevention and detachment prevention of the liquid passage 12.

[0048] Preferably, the outer surface of the lower shell is provided with a connecting seat 111, a potting groove 112 is formed in the connecting seat, an insertion hole 113 is provided in the potting groove, a through hole 114 communicating with the potting groove is provided on one side of the connecting seat, the liquid pipe is inserted into the potting groove and the insertion hole through the through hole, and epoxy resin is provided in the potting groove.

[0049] Specifically, in order to improve the sealing of the flow path, the liquid pipe 12 extends from the through hole 114 on one side of the connector 111 into the potting groove 112 and is inserted into the insertion hole 113. Then, epoxy resin is injected into the potting groove so that the liquid pipe 12 is sealed into the potting groove 112.

[0050] Because the liquid passage tube 12 is a polytetrafluoroethylene capillary tube, after being installed in the flow assembly, one end is connected to the inlet and outlet of the water flow channel in the reaction assembly, and the other end is connected to the external liquid passage. The middle part of the liquid passage tube 12 is bent in a streamlined manner and placed in the potting groove 112 and potted with black epoxy resin. This serves two purposes: firstly, to activate the sealing and light-proof function, and secondly, to fix the liquid passage tube.

[0051] Furthermore, both the airflow channel and the water flow channel are U-shaped channels, with the airflow channel arranged outside the water flow channel.

[0052] Specifically, the gas flow channel and the water flow channel in the reaction shell 21 are set as parallel U-shaped channels. The U-shaped channel of the reaction shell 21 forms a reaction chamber. Gas and liquid enter the reaction shell 21 through the gas pipe 13 and the liquid pipe 12. The gas and liquid pass parallel through the U-shaped channel of the reaction shell 21. The reaction bed 23 is set in the U-shaped channel of the reaction shell 21. The liquid forms a liquid film on the reaction bed 23, thereby contacting the gas, which facilitates the reaction between the liquid and the gas and improves the reaction efficiency and reaction stability of the gas and liquid.

[0053] Furthermore, airflow extension sections 214 are respectively provided on both sides of the viewing window of the airflow channel.

[0054] Specifically, in order to improve the accuracy of detection, an airflow extension section 214 with a larger cross-sectional area is formed on both sides of the airflow channel located in the viewing window 213. The airflow extension section 214 can slow down the flow speed of the airflow so that the gas to be detected can fully and effectively react with the detection liquid film on the surface of the reaction bed 23 in the viewing window 213, thereby improving the accuracy of detection.

[0055] Furthermore, the inner surface of the lower shell is provided with two first grooves (unmarked) and two second grooves (unmarked), the liquid passage pipe is connected to the corresponding first groove, and the gas passage pipe is connected to the corresponding second groove;

[0056] The reaction shell is provided with two first plugs 215 and two second plugs 216. The water flow channel is connected between the two first plugs, and the air flow channel is connected between the two second plugs. The first plugs are inserted into the corresponding first grooves, and the second plugs are inserted into the corresponding second grooves.

[0057] Specifically, to improve the ease of assembly and disassembly, after the reaction shell is assembled onto the lower shell, the plug is inserted into the corresponding groove to complete the connection between the airflow channel and the gas pipe, as well as the connection between the water flow channel and the liquid pipe. The plug of the reaction shell 21 is directly inserted into the through hole of the sealing gasket 24, and then the sealing gasket is placed on the lower shell 11, so that the port of the plug of the reaction shell 21 is connected to the gas pipe 13 and the liquid pipe 12, avoiding the use of joints, preventing liquid residue and leakage, and improving the sealing performance of the detection device.

[0058] Furthermore, a slot is provided at the U-shaped pipe of the reaction shell 21, and the reaction bed 23 is located at the slot of the reaction shell 21.

[0059] Specifically, a slot is provided at the U-shaped pipe of the reaction shell 21. The reaction shell 21 is designed and manufactured separately, and the reaction bed 23 is pre-installed in the reaction shell 21 at the factory to facilitate the flatness of the reaction bed 23 and improve the flatness of the test results. The reaction bed 23 is soft and has a flat surface, which is conducive to the fixation of the reaction bed 23. The reaction bed 23 is set at the slot on the reaction shell 21, and the slot on the reaction shell 21 locks the edge of the reaction bed 23 to prevent the bulging problem caused by gas blowing to the edge of the reaction bed 23, thereby improving the flatness of the surface of the reaction bed 23 and thus improving the reliability of the test results.

[0060] Furthermore, the sealing gasket 24 is provided with mounting holes, and the fixing post 25 is disposed in the mounting holes of the sealing gasket 24.

[0061] Specifically, the reaction shell 21 is mounted on the sealing gasket 24 via the fixing post 25, which facilitates the positioning and stability between the sealing gasket 24 and the reaction shell 21, and allows the channel of the reaction shell 21 to be more accurately connected to the gas pipe 13 and the liquid pipe 12 through the sealing gasket 24, which facilitates the installation of the reaction shell 21.

[0062] Furthermore, the viewing window 213 is a stepped through-hole, and the light window 22 is set on the stepped surface of the viewing window 213.

[0063] Specifically, the light window 22 is set in the viewing window 213 of the reaction shell 21 to seal the channel of the reaction shell 21, while allowing the light signals generated by the gas and liquid to pass through the light window 22 to reach the sensor 32, which facilitates the detection by the sensor 32.

[0064] Furthermore, the upper shell is provided with a mounting groove (unmarked), the sensor is disposed in the mounting groove, and the sealing window covers the mounting groove.

[0065] Specifically, the mounting groove is arranged opposite to the viewing window 213, and the sensor is built into the mounting groove. Gas and liquid enter the U-shaped pipe of the reaction shell 21 from the gas pipe 13 and the liquid pipe 12 respectively, in opposite directions. The gas and liquid flow in parallel within the U-shaped pipe of the reaction shell 21. The liquid forms a liquid film on the reaction bed 23, and then reacts chemically with the gas to generate light, which is transmitted to the sensor 32 to achieve chemiluminescence detection.

[0066] Furthermore, the sealing window 33 is set on the groove opening of the mounting groove.

[0067] Specifically, the sealing window 33 is set on the groove of the upper shell 31 to fix the sensor 32 in the upper shell 31, which helps to improve the stability of the sensor 32 and facilitates chemiluminescence detection.

[0068] The reaction bed 23 is installed on the reaction shell 21 at the factory. The reaction shell 21 is connected to the gas pipe 13 and the liquid pipe 12 by inserting a sealing gasket 24. Gas and liquid enter the reaction shell through the gas pipe 13 and the liquid pipe 12 respectively. Gas and liquid flow in opposite directions in the U-shaped pipe on the reaction shell 21. The liquid forms a liquid film on the reaction bed 23 and reacts with the gas to produce light through a chemiluminescence reaction. The light passes through the light window 22 and the sealing window 33 and enters the sensor 32 to realize the detection of gas and liquid chemiluminescence.

[0069] During the actual testing, one gas line is connected to a vacuum pump, the other gas line is connected to a sampling head, and two liquid lines are connected to peristaltic pumps. One peristaltic pump is connected to a test liquid container, and the other peristaltic pump is connected to a waste liquid container.

[0070] The method of use includes starting a vacuum pump to collect the gas to be detected through a sampling head. The gas to be detected enters the gas flow channel. At the same time, two peristaltic pumps start, allowing the detection solution to enter the water flow channel and wet the reaction bed. A liquid film of the detection liquid is formed on the surface of the reaction bed and comes into contact with the gas to be detected, resulting in a gas-liquid interface chemiluminescence reaction. The light signal is collected by a sensor.

[0071] The specific detection process is as follows: Under the action of an external peristaltic pump, the detection reagent continuously flows through the peristaltic pump hose and enters the liquid path pipe 12, reaching the upper end of the reaction bed 23 inside the reaction shell 21 and contacting the reaction bed 23. Under the action of gravity and the traction of the reaction bed 23, it gradually diffuses and wets the entire reaction bed 23, forming a uniform liquid film on the surface of the reaction bed 23. Finally, it gathers at the bottom of the reaction bed 23 and is then extracted by the external peristaltic pump through the liquid path pipe 12. The gas to be detected from the outside is filtered through the sampling head by the action of the rear vacuum pump, and then enters the reaction component 2 through the gas path pipe 13. After participating in the reaction inside the reaction shell 21, it is extracted from the reaction component 2 by the vacuum pump. Inside the reaction shell 21, the gas to be detected comes into contact with the liquid film formed on the surface of the reaction bed 23 by the detection reagent, and a gas-liquid interface chemiluminescence reaction occurs. When the detection reagent is in excess, the chemiluminescence signal is directly proportional to the concentration of the gas to be detected. The concentration of the gas to be detected is calculated by detecting the chemiluminescence signal, thereby realizing the detection of the gas.

[0072] Beneficial effects:

[0073] (1) In the past, the reactor and shell were integrated, and the reaction bed needed to be installed and fixed at the bottom of the shell. Because the reaction bed is relatively soft and requires a flat surface, fixing the reaction bed to the bottom of the shell was a major problem. Although previous technical solutions proposed various methods such as using rubber rings for clamping, organic solvent melting and bonding, and hydrogel cross-linking for fixation, these methods required high user operation skills, and the errors caused by human operation had a significant impact on the results, leading to many problems in the consistency, stability, and accuracy of the detection technology, which was detrimental to the application and promotion of the equipment. Designing the reactor as a separate unit, with the reaction bed pre-installed in the reactor at the factory, helps standardize the reactor and reduces human interference. At the same time, users can also adapt to different application scenarios by replacing different models of reactors.

[0074] (2) Chemiluminescence detection technology at the gas-liquid phase flow interface involves the reaction between gas and liquid. During the detection process, gas and liquid from outside the reactor need to be transferred to the reactor for reaction. This raises the issue of connecting the external gas-liquid pipelines and the internal gas-liquid channels. Previous technologies used threaded joints to connect the pipelines and channels. This connection process involves diameter changes, affecting the smoothness of the transfer. Furthermore, the threaded joints leave gaps at the connection points, where liquid can easily remain. Besides the risk of leakage, solutes in the residual liquid can precipitate and block the flow path. Additionally, residual liquid in the gaps is difficult to clean and will dissolve back into the new liquid during subsequent use, affecting the accuracy of the detection results. In this invention, a rigid capillary is directly integrated into the housing, and an interlocking design connects the external liquid path to the reactor channel, effectively avoiding these problems. It also offers significant advantages in terms of light protection and maintainability.

[0075] (3) The gas and liquid flow paths within the reactor are designed in parallel to maximize the gas-liquid reaction efficiency. Simultaneously, grooves are installed at the edges of the reaction bed to effectively prevent airflow from scalding the edges and ensuring a smooth, uniform reaction interface, thus guaranteeing consistent detection results. Furthermore, the inlet and outlet are located at the upper and lower ends of the reaction bed, fixed below the grooves, preventing the liquid flow path from impacting the reaction bed. The reactor utilizes a curved channel design to control the gas flow direction, allowing the gas to flow smoothly across the reaction bed surface and participate in the reaction, resulting in better stability and consistency.

[0076] (4) When installing and connecting the reactor and the shell, a sealing gasket and corresponding fixing column and fixing groove design are adopted. On the one hand, this ensures the convenience of installation and prevents improper installation by the user from affecting the detection effect; on the other hand, it also achieves a good sealing effect. At the same time, through standardized design, it can also be adapted to different models of reactors, thereby improving the adaptability of the detection equipment.

[0077] (5) In previous designs, the reaction bed was directly mounted on the shell, which needed to be in direct contact with the reactant gas and liquid. Due to the corrosiveness of the liquid and the problem of gas adsorption, the requirements for the shell material were high, making it difficult to achieve a good overall effect in terms of processing difficulty, mechanical strength, and reaction bed installation. This invention perfectly solves this problem.

[0078] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A chemiluminescence detection device, characterized in that, include: Flow components, reaction components, and detection components; The flow assembly includes a lower shell, two liquid passages and two gas passages, wherein the liquid passages and the gas passages are disposed on the lower shell; The reaction assembly includes a reaction shell, a light window, a reaction bed, a sealing gasket, and a fixing column. The reaction shell is provided with a water flow channel and a gas flow channel, and a through hole is provided between the water flow channel and the gas flow channel. A viewing window is provided at the top of the gas flow channel. The reaction bed is located in the water flow channel and is disposed in the through hole. The light window is disposed in the viewing window. The fixing column is disposed at the bottom of the reaction shell. The reaction shell is disposed on the sealing gasket. The detection assembly includes an upper shell, a sensor, and a sealing window. The sensor and the sealing window are disposed on the upper shell, and the sealing window covers the area below the sensor. The sealing gasket is disposed on the lower shell, the upper shell is disposed on the lower shell, the sealing window and the light window are arranged opposite to each other, the two ends of the water flow channel are respectively connected to the liquid pipe, and the two ends of the air flow channel are respectively connected to the air pipe. The gas pipe has a multi-bend structure; the inner surface of the lower shell is provided with two first grooves and two second grooves, the liquid pipe communicates with the corresponding first groove, and the gas pipe communicates with the corresponding second groove; the reaction shell is provided with two first plugs and two second plugs, the water flow channel is connected between the two first plugs, the gas flow channel is connected between the two second plugs, the first plug is inserted into the corresponding first groove, and the second plug is inserted into the corresponding second groove; the outer surface of the lower shell is provided with a connecting seat, the connecting seat has a potting groove, the potting groove has an insertion hole, one side of the connecting seat has a through hole communicating with the potting groove, the liquid pipe is inserted into the potting groove through the through hole and into the insertion hole, and the potting groove is provided with epoxy resin.

2. The chemiluminescence detection device according to claim 1, characterized in that, The bends in the gas pipe are designed with an arc-shaped surface.

3. The chemiluminescence detection device according to claim 1, characterized in that, Both the airflow channel and the water flow channel are U-shaped channels, with the airflow channel arranged outside the water flow channel.

4. The chemiluminescence detection device according to claim 1, characterized in that, The airflow channel is located on both sides of the viewing window and has airflow expansion sections respectively.

5. The chemiluminescence detection device according to claim 1, characterized in that, The sealing gasket has mounting holes, and the fixing post is disposed in the mounting holes of the sealing gasket.

6. The chemiluminescence detection device according to claim 1, characterized in that, The upper shell is provided with a mounting groove, the sensor is disposed in the mounting groove, and the sealing window covers the mounting groove.

7. A method of using the chemiluminescence detection device as described in any one of claims 1-6, characterized in that, One gas line is connected to a vacuum pump, and the other gas line is connected to a sampling head. Two liquid lines are connected to peristaltic pumps, one of which is connected to a detection liquid container and the other is connected to a waste liquid container. The method of use includes starting a vacuum pump to collect the gas to be detected through a sampling head. The gas to be detected enters the gas flow channel. At the same time, two peristaltic pumps start, allowing the detection liquid to enter the water flow channel and wet the reaction bed. A liquid film of the detection liquid is formed on the surface of the reaction bed and comes into contact with the gas to be detected, resulting in a gas-liquid interface chemiluminescence reaction. The light signal is collected by a sensor.

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