Gas absorption cuvette

Abstract

The utility model provides a gas absorption cuvette. The gas absorption cuvette comprises a tube body and a gas inlet tube, an exhaust port is formed in one end of the pipe body, and a solution sample inlet is formed in the other end of the pipe body so as to discharge gas and inject a solution to be detected respectively. At least one pair of light-transmitting windows is arranged on the side wall of the tube body between the exhaust port and the solution sample inlet, and the light-transmitting windows are made of a high-light-transmittance material, so that the detection light can efficiently pass through the tube body. One end of the gas inlet pipe extends into the pipe body below the light inlet window, and the other end of the gas inlet pipe is connected with an external gas source and is used for conveying gas to be detected into the pipe body. A solution to be detected is injected into the pipe body through the solution sample inlet, gas to be detected enters the pipe body through the gas inlet pipe and makes full contact with the solution, and unabsorbed residual gas is exhausted through the exhaust port. Detection light enters from the light inlet window on one side, penetrates through the gas-liquid mixture in the pipe body and then exits from the light inlet window on the other side.

Description

Technical Field

[0001] This application belongs to the technical field of gas measuring devices, and more specifically, relates to a gas absorption cuvette. Background Technology

[0002] In the fields of environmental monitoring and water quality analysis, accurate measurement of gaseous components in water bodies is crucial. Traditional gas absorption cuvettes play a key role in water quality measurements based on methods such as spectrophotometry, fluorescence spectrophotometry, chemiluminescence, and Raman spectroscopy. However, existing cuvettes require the solution to be tested to be prepared in advance before being poured into the cuvette, resulting in a cumbersome process and low measurement sensitivity and accuracy. Utility Model Content

[0003] The purpose of this application is to provide a gas absorption cuvette to solve the technical problem of cumbersome usage in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] A gas absorption cuvette is provided, comprising:

[0006] The tube has an exhaust port at one end and a solution inlet at the other end; the tube is also provided with a light-transmitting window for detecting light transmission, the light-transmitting window being located between the exhaust port and the solution inlet;

[0007] The air intake pipe extends to the bottom of the light-transmitting window at one end and is connected to the air source at the other end.

[0008] As a further improvement to the above technical solution:

[0009] Optionally, the inner wall of the tube is further provided with at least one turbulence protrusion, and the turbulence protrusions are arranged at intervals on the inner wall of the tube.

[0010] Optionally, the extension direction of the turbulence protrusion is arranged at an angle to the axial direction of the tube body.

[0011] Optionally, the inner wall of the tube body also has an air inlet pipe limiting structure, in which the air inlet pipe is inserted to limit the air inlet pipe.

[0012] Optionally, the intake pipe limiting structure includes two limiting protrusions spaced apart from each other, and the intake pipe is inserted into the gap between the two limiting protrusions.

[0013] Optionally, the tube body is further provided with a temperature measuring groove, one end of which extends into the tube body, and the other end of which is located on the outside of the tube body and has an installation opening.

[0014] Optionally, the diameter of the vent is larger than the diameter of the solution inlet.

[0015] Optionally, the gas absorption cuvette may further include a heating wire wound around the outside of the tube.

[0016] Optionally, the outer side of the tube body is provided with a plurality of heating wire limiting protrusions, and the heating wire is wound between each of the heating wire limiting protrusions.

[0017] The beneficial effects of the gas absorption cuvette provided in this application are as follows:

[0018] The gas absorption cuvette provided in this application includes a tube body and an inlet tube. One end of the tube body has an exhaust port, and the other end has a solution inlet port to respectively allow for gas exhaust and injection of the analyte solution. At least one pair of transparent windows are provided on the side wall of the tube body between the exhaust port and the solution inlet port. These windows are made of a high-transmittance material to ensure efficient passage of detection light. One end of the inlet tube extends into the tube body below the transparent windows, and the other end is connected to an external gas source to deliver the analyte gas into the tube body.

[0019] In practical use, the test solution is injected into the tube through the solution inlet, while the test gas enters the tube through the gas inlet and comes into full contact with the solution. After the gas is absorbed by the solution, the unabsorbed residual gas is discharged through the exhaust port. Detection light enters through a light transmission window on one side, passes through the gas-liquid mixture inside the tube, and exits through a light transmission window on the other side. By measuring the spectral characteristics of the emitted light, the degree of light absorption by the solution can be accurately analyzed, thereby achieving quantitative determination of the content of specific substances in the solution. This gas absorption cuvette does not require pre-preparation of the test solution; after injecting the solution and gas, the spectral characteristics of the emitted light can be directly measured, offering advantages such as simplicity of use and sensitive and convenient measurement. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the main structure of the first gas absorption cuvette provided in this application;

[0022] Figure 2 A cross-sectional structural schematic diagram of the first gas absorption cuvette provided in this application;

[0023] Figure 3 A rear view structural schematic diagram of the first gas absorption cuvette provided in this application;

[0024] Figure 4 A top view of the structure of the first gas absorption cuvette provided in this application;

[0025] Figure 5 A cross-sectional view of the second type of gas absorption cuvette provided in this application;

[0026] Figure 6 A top view of the structure of the second type of gas absorption cuvette provided in this application;

[0027] Figure 7 A cross-sectional structural schematic diagram of the third type of gas absorption cuvette provided in this application;

[0028] Figure 8 This is a rear view structural diagram of the third type of gas absorption cuvette provided in this application.

[0029] The following are the labeling elements in the figure:

[0030] 1. Pipe body; 11. Exhaust port;

[0031] 12. Solution inlet; 13. Light transmission window;

[0032] 2. Intake pipe; 3. Spoiler protrusion;

[0033] 4. Limiting protrusion; 5. Temperature measuring tank;

[0034] 6. Heating wire limiting protrusion. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of this utility model.

[0041] In the following description, suffixes such as "circuit," "component," "assembly," or "unit" are used only for the purpose of describing this utility model and have no specific meaning in themselves. Therefore, they can be used in combination.

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0043] like Figures 1 to 4 As shown, this application provides a gas absorption cuvette, including a tube body 1 and an inlet tube 2.

[0044] Specifically, one end of the tube body 1 has an exhaust port 11, and the other end has a solution inlet 12 to respectively discharge gas and inject the solution to be tested. At least one pair of light-transmitting windows 13 are provided on the side wall of the tube body 1 between the exhaust port 11 and the solution inlet 12. The light-transmitting windows 13 are made of a high-transmittance material to ensure that the detection light can pass through efficiently. One end of the air inlet pipe 2 extends into the tube body 1 below the light-transmitting window 13, and the other end is connected to an external gas source to deliver the gas to be tested into the tube body 1.

[0045] In practical use, the solution to be tested is injected into tube 1 through the solution inlet 12, while the gas to be tested enters tube 1 through the gas inlet 2 and comes into full contact with the solution. After the gas is absorbed in the solution, the unabsorbed residual gas is discharged through the exhaust port 11. The detection light enters from one side through the light transmission window 13, passes through the gas-liquid mixture inside tube 1, and exits from the other side through the light transmission window 13. By measuring the spectral characteristics of the emitted light, the degree of light absorption by the solution can be accurately analyzed, thereby achieving quantitative determination of the content of specific substances in the solution. This gas absorption cuvette does not require pre-preparation of the solution to be tested; after the solution and gas are injected, the spectral characteristics of the emitted light can be directly measured, offering advantages such as simplicity of use and sensitive and convenient measurement. Tube 1 can specifically be a cylindrical tube, or, as shown in the image... Figure 5 and Figure 6 As shown, tube 1 can specifically be a square tube.

[0046] like Figures 1 to 4 As shown, in a specific embodiment of this application, the inner wall of the tube body 1 is further provided with at least one turbulence protrusion 3, which is distributed circumferentially or axially along the inner wall of the tube body 1. The turbulence protrusion 3 can effectively change the flow state of the fluid in the tube body 1, and by increasing the degree of turbulence of the fluid, prolonging the contact time between the gas and the liquid, thereby improving the dissolution efficiency of the gas in the solution. In addition, the turbulence protrusion 3 can also disperse the gas entering the tube body 1 into smaller bubbles, increase the contact area between the gas and liquid phases, and further optimize the gas absorption effect. This not only helps to improve the sensitivity and accuracy of the measurement, but also reduces the gas residue in the solution, ensuring the reliability of the measurement results.

[0047] like Figures 1 to 4As shown, in one specific embodiment of this application, the extension direction of the turbulence protrusion 3 is arranged at an angle to the axial direction of the pipe body 1. The size of this angle can be adjusted according to actual application requirements, for example, set to an angle between 30° and 90° to optimize fluid flow characteristics. By arranging the turbulence protrusion 3 on the inner wall of the pipe body 1 in an inclined or vertical direction, the flow path of the fluid in the pipe body 1 can be effectively changed, enhancing the turbulence effect of the fluid, promoting the uniform distribution of gas in the solution, thereby improving gas absorption efficiency. In addition, the inclined or vertically arranged turbulence protrusion 3 can further refine gas bubbles, increase the contact area between the gas and liquid phases, and further improve the gas dissolution effect.

[0048] like Figures 1 to 4 As shown, in one specific embodiment of this application, the inner wall of the tube body 1 also has an air inlet pipe limiting structure. The air inlet pipe 2 is inserted into the air inlet pipe limiting structure, thereby limiting the air inlet pipe 2. The air inlet pipe limiting structure not only prevents the air inlet pipe 2 from shifting or shaking during fluid flow, but also prevents the air inlet pipe 2 from blocking the path of the detection beam, ensuring that the detection beam can pass smoothly through the light transmission window 13 and through the gas-liquid mixture inside the tube body 1. The specific form of the air inlet pipe limiting structure can be an annular groove, a positioning boss, or other fixing structure.

[0049] like Figures 1 to 4 As shown in a specific embodiment of this application, the intake pipe limiting structure includes two limiting protrusions 4 spaced apart from each other, which are fixed to the inner wall of the pipe body 1 in a forked arrangement. The spacing between the limiting protrusions 4 matches the outer diameter of the intake pipe 2, allowing the intake pipe 2 to be inserted between the two limiting protrusions 4, thereby achieving a stable limiting effect. The forked arrangement of the limiting protrusions 4 not only restricts the radial and axial displacement of the intake pipe 2, but also prevents the intake pipe 2 from tilting or rotating during fluid flow, ensuring that it is always in the preset position. This effectively prevents the intake pipe 2 from blocking the path of the detection beam, ensuring that the detection light can pass through the light-transmitting window 13 and through the gas-liquid mixture inside the pipe body 1, thereby improving the accuracy and reliability of the measurement.

[0050] like Figures 1 to 4 As shown, in one specific embodiment of this application, the pipe body 1 is further provided with a temperature measuring groove 5. One end of the temperature measuring groove 5 extends into the interior of the pipe body 1 to contact the fluid inside the pipe body 1, while the other end is located on the outside of the pipe body 1 and has an installation opening to facilitate the installation of the temperature sensor. The design of the temperature measuring groove 5 enables the temperature sensor to measure the real-time temperature of the fluid inside the pipe body 1. The inner diameter of the temperature measuring groove 5 matches the outer diameter of the temperature sensor.

[0051] like Figures 1 to 4As shown, in one specific embodiment of this application, the diameter of the exhaust port 11 is designed to be larger than the diameter of the solution inlet port 12 to ensure efficient gas discharge while preventing gas accumulation within the tube body 1. To achieve this, the tube body 1 has a variable diameter section near the exhaust port 11, or the overall structure from the solution inlet port 12 to the exhaust port 11 has a tapered variable diameter design. The variable diameter section or tapered variable diameter structure can effectively regulate the flow state of the fluid within the tube body 1, allowing the gas to gradually diffuse during its ascent, thereby reducing the possibility of bubble coalescence and improving the gas-liquid contact efficiency.

[0052] In one specific embodiment of this application, the gas absorption cuvette further includes a heating wire (not shown), which is fixed to the outside of the tube body 1 in a spiral winding manner. The heating wire is powered by an external power source and can uniformly heat the fluid inside the tube body 1, thereby adjusting the fluid temperature to a preset range to meet the temperature requirements under different measurement conditions. The winding density and distribution range of the heating wire can be optimized according to the size of the tube body 1 and the heating requirements to ensure that heat can be uniformly transferred to the fluid inside the tube body 1, avoiding localized overheating or uneven heating.

[0053] like Figure 7 and Figure 8 As shown, in a specific embodiment of this application, the outer side of the tube body 1 is further provided with multiple heating wire limiting protrusions 6, and the heating wire is wound between each heating wire limiting protrusion 6. The heating wire limiting protrusions 6 include heating wire fixing lugs, heating wire fixing posts, and heating wire fixing spikes. These structures are used to limit the displacement of the heating wire in the axial, radial, and circumferential directions, respectively, ensuring that the heating wire can be stably and uniformly wound around the outer side of the tube body 1. The heating wire fixing lugs are used to prevent the heating wire from sliding axially, the heating wire fixing posts are used to support the heating wire and maintain its distance from the outer wall of the tube body 1, and the heating wire fixing spikes are used to fix the winding position of the heating wire, preventing it from loosening in the circumferential direction. Through this multi-layered limiting design, the heating wire can tightly fit against the outer wall of the tube body 1, thereby achieving efficient heat transfer while preventing the heating wire from shifting or deforming due to vibration or temperature changes.

[0054] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gas absorption cuvette, characterized in that, include: The tube body (1) has an exhaust port (11) at one end and a solution inlet (12) at the other end; the tube body (1) is also provided with a light-transmitting window (13) for detecting light transmission, and the light-transmitting window (13) is located between the exhaust port (11) and the solution inlet (12); The air intake pipe (2) extends to the bottom of the light-transmitting window (13) at one end and is connected to the air source at the other end.

2. The gas absorption cuvette as described in claim 1, characterized in that, The inner wall of the tube (1) is also provided with at least one turbulence protrusion (3), and each of the turbulence protrusions (3) is arranged on the inner wall of the tube (1) at intervals.

3. The gas absorption cuvette as described in claim 2, characterized in that, The extension direction of the turbulence protrusion (3) is arranged at an angle to the axial direction of the tube body (1).

4. The gas absorption cuvette as described in claim 1, characterized in that, The inner wall of the tube (1) also has an air inlet pipe limiting structure, and the air inlet pipe (2) is inserted into the air inlet pipe limiting structure to limit the air inlet pipe (2).

5. The gas absorption cuvette as described in claim 4, characterized in that, The intake pipe limiting structure includes two limiting protrusions (4) spaced apart from each other, and the intake pipe (2) is inserted into the gap between the two limiting protrusions (4).

6. The gas absorption cuvette as described in claim 1, characterized in that, The tube body (1) is also provided with a temperature measuring groove (5), one end of which extends into the tube body (1) and the other end of which is located on the outside of the tube body (1) and has an installation opening.

7. The gas absorption cuvette as described in claim 1, characterized in that, The diameter of the exhaust port (11) is larger than the diameter of the solution inlet (12).

8. The gas absorption cuvette as described in claim 1, characterized in that, It also includes a heating wire, which is wound around the outside of the tube body (1).

9. The gas absorption cuvette as described in claim 8, characterized in that, The outer side of the tube body (1) is also provided with a plurality of heating wire limiting protrusions (6), and the heating wire is wound between each of the heating wire limiting protrusions (6).

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