Device for synchronously measuring CO2 in water and air based on illumination regulation and control

Abstract

The utility model provides a device for synchronously measuring CO2 in water and air based on illumination regulation and control. The device comprises an experiment bracket, an experiment container, an illumination assembly, an air guide pipe assembly, a water guide pipe assembly and a monitor, the experiment container is placed in the experiment support, the illumination assembly is arranged above the experiment container, the upper end of the experiment container is connected with the monitor through the air guide pipe assembly, and the monitor is arranged to measure the CO2 content of air at the upper end of the experiment container. The lower end part of the experimental container is connected with the monitor through the water guide pipe assembly, and the lower end part of the water guide pipe assembly is immersed in a solution at the lower end part of the experimental container and is used for collecting a water sample in the experimental container. By arranging the LED lamp controller and the shading object, different light and dark periods can be simulated, the device is more suitable for the field environment, and the result reliability of the measuring device is improved.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, and in particular to a device for simultaneous measurement of CO2 in water and air based on light-controlled illumination. Background Technology

[0002] Marine carbon sinks (also known as "blue carbon") refer to the process and mechanism by which the ocean absorbs and solidifies carbon dioxide from the atmosphere. Currently, there is ongoing debate about whether shellfish and some large algae in seawater are carbon sinks or sources. Furthermore, existing technologies and experimental methods are limited, making it impossible to simultaneously detect CO2 concentrations in both air and water. Therefore, this paper proposes a light-controlled device for simultaneously measuring CO2 in water and air. This device can be used to measure the absorption or emission of CO2 from water by aquatic organisms and their response to CO2 in the air. Utility Model Content

[0003] This invention provides a device for simultaneous measurement of CO2 in water and air based on light-controlled illumination, which can effectively solve the above-mentioned problems.

[0004] This utility model is implemented as follows:

[0005] This invention provides a device for simultaneous measurement of CO2 in water and air based on light-controlled illumination, comprising: an experimental support, an experimental container, a light-emitting component, a gas-conducting pipe assembly, a water-conducting pipe assembly, and a monitoring instrument. The experimental container is placed inside the experimental support, the light-emitting component is positioned above the experimental container, the upper end of the experimental container is connected to the monitoring instrument via the gas-conducting pipe assembly, the monitoring instrument is configured to measure the CO2 content of the air at the upper end of the experimental container, the lower end of the experimental container is connected to the monitoring instrument via the water-conducting pipe assembly, and the lower end of the water-conducting pipe assembly is immersed in a solution at the lower end of the experimental container for collecting water samples from inside the experimental container.

[0006] As a further improvement, it also includes: a sealing cap disposed on the experimental container, and a light-shielding film disposed on the sealing cap.

[0007] As a further improvement, the experimental support includes: a first support and a second support, wherein the second support is slidably sleeved on the first support.

[0008] As a further improvement, the first bracket has several positioning holes on its side wall, and the second bracket has a locking block on the side near the positioning holes.

[0009] As a further improvement, the second bracket is connected to a mounting plate on the side away from the first bracket, and the mounting plate has a lamp slot for placing the lighting component.

[0010] As a further improvement, the experimental container includes a sealing cap and a tank body, wherein the sealing cap is provided with a sealing ring, and the sealing cap is provided with sealing rings at the connection points with the gas guide pipe assembly and the water guide pipe assembly.

[0011] As a further improvement, the lighting assembly includes an LED lamp and an LED lamp controller, the LED lamp controller being configured to control the light intensity of the LED lamp.

[0012] As a further improvement, the gas delivery tube assembly includes: a gas delivery tube and a conduit, and a quick connector disposed on the conduit; the water delivery tube assembly includes: a water sample collection tube and a flow stop clamp disposed on the water sample collection tube.

[0013] The beneficial effects of this utility model are:

[0014] This invention simulates different light intensities by setting up an illumination component and using light-shielding films with different transmittance on the sealed cover. This allows the measuring device to simulate real outdoor light intensity, making the environment inside the experimental container more closely resemble the outdoor environment. This enables the tested objects to carry out normal biological activities, improving the reliability and validity of the experimental results. By setting a sealing ring and a sealing ring on the sealed cover, the experimental container is kept in a closed environment to prevent gas leakage from affecting the experimental results. By setting up an adjustable height experimental stand to adjust the distance between the illumination component and the experimental container, the light intensity illuminating the experimental sample can be further controlled to simulate a more realistic outdoor environment. By setting up a gas guide tube component and a water guide tube component connected to the monitoring instrument, CO2 in the air and water inside the experimental container can be monitored simultaneously, accurately grasping the changes in CO2 concentration in the air and water inside the experimental container. Then, the changes in CO2 concentration can be used to analyze whether the tested object is a carbon source or carbon sink. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a synchronous CO2 measurement device in water and air based on light-controlled illumination, according to this utility model.

[0017] Figure 2 This is a cross-sectional schematic diagram of the structure of a synchronous measurement device for CO2 in water and air based on light-controlled illumination, according to this utility model.

[0018] Figure 3 This is a schematic diagram of the experimental support structure of a synchronous measurement device for CO2 in water and air based on light-controlled illumination, according to this utility model.

[0019] Figure 4 This is a cross-sectional schematic diagram of the experimental support structure of a synchronous measurement device for CO2 in water and air based on light-controlled illumination, according to this utility model.

[0020] Figure 5 This is a schematic diagram of the experimental container structure of a device for synchronously measuring CO2 in water and air based on light-controlled illumination, according to this utility model.

[0021] Figure 6 This is a cross-sectional view of the experimental container structure of a device for synchronously measuring CO2 in water and air based on light-controlled illumination, according to this utility model.

[0022] In the diagram: 1-Experimental support, 11-First support, 111-Positioning hole, 12-Second support, 121-Card block, 13-Mounting plate, 131-Lamp trough, 2-Experimental container, 21-Sealing cap, 211-Valve nozzle, 212-Sealing ring, 213-Sealing ring, 22-Tank body, 3-Illumination component, 4-Gas delivery pipe, 5-Water sample collection pipe. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, 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 indicated technical features. 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.

[0025] Reference Figure 1-6 As shown, a device for simultaneous measurement of CO2 in water and air based on light-controlled illumination includes: an experimental support 1, an experimental container 2, an illumination component 3, an air delivery pipe component, a water delivery pipe component, and a monitoring instrument.

[0026] Experimental container 2 is placed inside experimental support 1, and illumination component 3 is positioned above experimental container 2. The upper end of experimental container 2 is connected to a monitoring instrument via an air guide tube assembly. The monitoring instrument is configured to measure the CO2 content of the air at the upper end of experimental container 2. The lower end of experimental container 2 is connected to the monitoring instrument via a water guide tube assembly. The lower end of the water guide tube assembly is immersed in the solution at the lower end of experimental container 2 to collect water samples from inside experimental container 2. By setting up air guide tube assembly and water guide tube assembly on experimental container 2, simultaneous monitoring of CO2 in the air and water inside the experimental container can be achieved, accurately grasping the changes in CO2 concentration in the air and water inside the experimental container. Furthermore, by analyzing the changes in CO2 concentration, it can be inferred whether the shellfish or seaweed being tested is a carbon sink or carbon source.

[0027] Furthermore, to improve the accuracy of CO2 concentration monitoring and the reliability of experimental results, the experimental container 2 includes a sealing cap 21 and a tank body 22. A sealing ring 213 is provided on the sealing cap 21, which is positioned on the tank body 22 via the sealing ring 213. The sealing ring 213 rubs against the inner wall of the tank body 22, ensuring the sealing cap 21 is stably placed on the tank body 22. The sealing ring 213 also prevents gas from leaking out from the gap between the sealing cap 21 and the tank body 22. Several gas guide tubes are threaded through the sealing cap 21. The tank includes components and a water pipe assembly. The gas pipe assembly extends to the upper end of the tank 22 to extract gas from the upper end, and the water pipe assembly extends to the lower end of the tank 22 to extract water samples from inside the tank 22. A light-shielding film assembly is also provided on the sealing cap 21. This assembly can contain single or multiple layers of light-shielding film, working in conjunction with LED lights to simulate different light intensities to meet various experimental conditions, such as simulating a dark outdoor environment. A layer of light-shielding material can be wrapped around the outer wall of the tank 22; in this embodiment, the light-shielding material is aluminum foil.

[0028] The gas delivery pipe assembly includes: a gas delivery pipe 4 and a conduit. The conduit is equipped with a valve 211, which is used to quickly connect to the monitor through the pipeline. When connected, the gas at the upper end of the experimental container 2 is drawn, and the gas is delivered to the monitor through the pipeline. After sampling is completed, the tank 22 is sealed after disconnecting from the conduit to prevent internal gas leakage. The gas delivery pipe 4 is equipped with a flow stop clamp. When gas is introduced into the tank 22, the flow stop clamp is opened to connect the gas delivery pipe 4 to the gas delivery equipment, and the gas is introduced into the tank 22 through the gas delivery pipe 4.

[0029] The water guide tube assembly includes: a water sample collection tube 5 and a flow stop clamp. The flow stop clamp is installed on the water sample collection tube 5. When collecting water samples, the flow stop clamp is opened to allow the water sample collection tube 5 to flow unobstructed. The liquid in the experimental container 2 flows along the water sample collection tube 5 to the monitoring instrument. After sampling, the flow stop clamp is closed to seal the water sample collection tube 5 at the flow stop clamp. A sealing ring 212 is provided around the connection between the sealing cap 21 and the gas guide tube assembly and the water guide tube assembly to prevent gas from leaking out through the gaps between the sealing cap 21 and the gas guide tube assembly and the water guide tube assembly, which would affect the experimental results and cause misjudgment by the experimenter.

[0030] Further, the experimental container 2 is placed inside the experimental support 1, which includes a first support 11, a second support 12, and a mounting plate 13. The first support 11 has several supports on its base, and the second support 12 is fitted inside the first support 11. The first support 11 has several positioning holes 111 on its side wall, and the second support 12 has a locking block 121 on the side near the positioning holes 111. By cooperating with the positioning holes 111 and the locking block 121, the connection position between the first support 11 and the second support 12 is adjusted, thereby adjusting the height of the experimental support 1. The second support 12 also has a mounting plate 13 on the side away from the first support 11, and the mounting plate 13 has a lamp slot 131 for placing the lighting component 3.

[0031] Furthermore, in order to simulate natural outdoor lighting, a lighting component 3 is provided at the mounting plate 13. The lighting component 3 includes an LED lamp and an LED lamp controller. The LED lamp controller is used to control the light intensity of the LED lamp. The LED lamp controller is equipped with an adjustment level, which can control the light intensity emitted by the LED lamp. If the experimental subject is the high-light group, the required light intensity is above 20,000 lx. The corresponding light intensity is set by adjusting the light setting. In this embodiment, the light intensity range for the high-light group is 20,000 lx to 100,000 lx. If the experimental subject is the low-light group, the required light intensity is below 20,000 lx. The light setting needs to be set to the lowest setting, and the required light intensity is obtained by using the light-shielding film assembly on the sealing cover 21. In this embodiment, the light intensity range for the low-light group is 1,000 lx to 20,000 lx. The optimal lighting environment for the experimental subject is simulated by adjusting the light intensity of the LED lights, and different light-dark cycles are set to simulate different external environments to observe changes in CO2 under different conditions, thus obtaining better experimental results.

[0032] Further, the specific embodiments of this utility model are as follows:

[0033] Before the experiment, fill experimental container 2 with 2 / 3 artificial or filtered seawater, leaving 1 / 3 air. Place the experimental subjects to be monitored in the water, such as 5-30g of large seaweed like *Gracilaria zebrina* or *Gracilaria scabra*, or 100g of shellfish like oysters. Cover with the sealing cap 21 and adjust the height of the experimental support 1. Set up a corresponding dark control group by covering the container 22 with tin foil. Using the LED light controller 32 and the light-shielding film assembly, set different light-dark cycles. Generally, the light cycle time is consistent with the outdoor environment, and the light-dark time ratio is 10h:14h. Before the end of each light-dark cycle, perform sampling and monitoring. The concentrations of CO2 and CH4 in the air of experimental container 2 are connected to the monitoring instrument via the gas supply pipe 4 for analysis. Simultaneously, monitor the concentrations of CO2 and CH4 in the air inside and outside the experimental container. Water samples were collected through water sample collection tube 5, and parameters such as temperature, salinity, total alkalinity, pH, DO, COD, NH4-N, NO2-N, NO3-N, DIP, TN, TP, Chl-a, DIC, DOC, POC, SS, bacteria, viruses, and molecules were measured. During water sample collection, an equal volume of air was simultaneously supplied through air supply tube 4. The volumes of water sample and supplied air were recorded, and the concentrations of CO2 and CH4 in the subsequent gas mixture were calculated. The experiment lasted 3–5 days. Based on the changes in various indicators in the water and air, the absorption and storage of nutrients and CO2, and the release of DOC by large algae or shellfish were analyzed, thereby determining whether the experimental subject was a carbon sink or carbon source.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for simultaneous measurement of CO2 in water and air based on light-controlled illumination, characterized in that, include: Experimental stand (1), experimental container (2), lighting assembly (3), air duct assembly, water duct assembly, monitoring instrument; The experimental container (2) is placed inside the experimental support (1), and the lighting component (3) is positioned above the experimental container (2). The upper end of the experimental container (2) is connected to the monitoring instrument via the air guide tube assembly. The monitoring instrument is configured to measure the CO2 content of the air at the upper end of the experimental container (2). The lower end of the experimental container (2) is connected to the monitoring instrument through the water guide pipe assembly. The lower end of the water guide pipe assembly is immersed in the solution at the lower end of the experimental container (2) for collecting water samples from inside the experimental container (2).

2. The device for simultaneous measurement of CO2 in water and air based on light-controlled illumination according to claim 1, characterized in that, Also includes: A sealing cap (21) disposed on the experimental container (2), and a light-shielding film disposed on the sealing cap (21).

3. The device for simultaneous measurement of CO2 in water and air based on light-controlled illumination according to claim 1, characterized in that, The experimental support (1) includes a first support (11) and a second support (12), wherein the second support (12) is slidably sleeved on the first support (11).

4. The device for simultaneous measurement of CO2 in water and air based on light-controlled illumination according to claim 3, characterized in that, The first bracket (11) has a plurality of positioning holes (111) on its side wall, and the second bracket (12) has a locking block (121) on the side near the positioning holes (111).

5. The device for simultaneous measurement of CO2 in water and air based on light-controlled illumination according to claim 3, characterized in that, The second bracket (12) is connected to a mounting plate (13) on the side away from the first bracket (11), and the mounting plate (13) has a lamp groove (131) for placing the lighting component (3).

6. The device for simultaneous measurement of CO2 in water and air based on light-controlled illumination according to claim 1, characterized in that, The experimental container (2) includes a sealing cap (21) and a tank body (22). The sealing cap (21) is provided with a sealing ring (213), and the sealing cap (21) is provided with a sealing ring (212) at the connection between it and the gas guide pipe assembly and the water guide pipe assembly.

7. The device for simultaneous measurement of CO2 in water and air based on light-controlled illumination according to claim 1, characterized in that, The lighting component (3) includes an LED lamp and an LED lamp controller, wherein the LED lamp controller is configured to control the light intensity of the LED lamp.

8. The device for simultaneous measurement of CO2 in water and air based on light-controlled illumination according to claim 1, characterized in that, The gas delivery tube assembly includes: a gas delivery tube (4) and a conduit, and a quick connector (211) disposed on the conduit; the water delivery tube assembly includes: a water sample collection tube (5) and a flow stop clamp disposed on the water sample collection tube (5).

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