Test control device for simulating ocean acidification and low-oxygen environment and use method thereof

Abstract

The invention discloses a test control device for simulating ocean acidification and a low-oxygen environment. The test control device comprises a gas supply end formed by three groups of pipelines and a plurality of groups of test modules connected with the gas supply end, the test module comprises a reactor and a PID (Proportion Integration Differentiation) controller, the PID controller is provided with a data measurement port I and a data measurement port II, an air inlet pipe is also connected in the reactor, and the air inlet end of the air inlet pipe is connected with the three groups of pipelines; the second data measuring port extends into the reactor, and the first data measuring port is connected with the air inlet pipe. Compared with the prior art, the test control device for simulating the ocean acidification and the low-oxygen environment and the use method thereof have the advantages that the structure is simple, the application range is wide, the operation is stable, and the ocean acidification and the low-oxygen environment can be accurately simulated at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of marine environment simulation experiments, and in particular to an experimental control device for simulating marine acidification and hypoxia environments and a method for using the same. Background Art

[0002] Since the Industrial Revolution, with the over-exploitation and utilization of fossil fuels, more and more CO2 has been emitted into the atmosphere. As one of the main carbon sinks on the earth, the ocean absorbs a large amount of CO2 emitted by human activities, leading to ocean acidification.

[0003] Observations have found that ocean acidification in the natural environment often does not occur alone. As ocean acidification intensifies, ocean low-oxygen zones are also expanding, especially eutrophic areas in warming sea areas.

[0004] Therefore, ocean acidification and hypoxia may have a synergistic effect on marine life, posing a huge threat to marine life and the marine ecological environment. Marine ecotoxicology experiments are one of the effective means to evaluate the impact of pollutants on marine life and ecosystems.

[0005] Therefore, developing an experimental control device that can accurately simulate ocean acidification and hypoxia is of great significance for exploring the ecological effects and mechanisms of the synergistic effects of ocean acidification and hypoxia on marine organisms. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a test control device for simulating ocean acidification and hypoxia environment, which has a simple structure, wide application, stable operation, and can simultaneously and accurately simulate ocean acidification and hypoxia environment, and a method for using the same.

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is: a test control device for simulating ocean acidification and hypoxia environment, comprising a gas supply end formed by three groups of pipelines and a plurality of test modules connected to the gas supply end; The test module includes a reactor and a PID controller, the PID controller is provided with a data measurement port 1 and a data measurement port 2, and the reactor is also connected with an air intake pipe, and the air intake end of the air intake pipe is connected with three sets of pipelines; The second data measurement port is extended into the reactor, and the first data measurement port is connected to the air inlet pipe.

[0008] Preferably, the three groups of pipelines include air pipes, N2 pipes and CO2 pipes, and the ports of the pipelines are connected with control valves.

[0009] Preferably, the air inlet pipe port is connected to three groups of bronchi, which are respectively connected to three groups of pipelines, and the three groups of bronchi are all connected to flow controllers, and the data measurement port is connected to control the flow controller.

[0010] Preferably, the end of the data measurement port 2 is also connected to a water DO sensor and a PH sensor.

[0011] Preferably, the air outlet end of the air inlet pipe is also connected to an aeration stone.

[0012] Another aspect of the present invention discloses a test method for simulating ocean acidification and hypoxia environment, which comprises the following steps: S1: Build an experimental control device to simulate ocean acidification and hypoxia environment; S2: Select the corresponding number of test modules for installation according to the experimental content; S3: Preset the air, N2, and CO2 content of each experimental module, count the air, N2, and CO2 used by each experimental module through the flow controller, and adjust the acidification and hypoxic conditions of the water in the reactor; S4: The water body information is monitored and fed back to the PID controller through the water body DO sensor and the PH sensor. The PID controller adjusts the reactor acidification and hypoxia conditions through the data measurement port-reverse control flow controller.

[0013] The advantages of the present invention compared with the prior art are: in the present invention, the experimental cost can be reduced by using multiple channels in coordination, and multi-channel control is convenient for regulation. In the present invention, the ocean acidification and hypoxia can be simulated simultaneously by setting up multiple groups of test modules, and the synergistic effects of the two on the stress of marine organisms can be studied. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of an experimental control device for simulating ocean acidification and hypoxic environment.

[0015] As shown in the figure: 1. Pipeline, 2. Reactor, 3. PID controller, 4. Inlet pipe, 5. Air pipe, 6. N2 pipe, 7. CO2 pipe, 8. Control valve, 9. Flow controller, 10. Water DO sensor, 11. PH sensor, 12. Aeration stone. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0017] Combined with Figure 1As shown, a test control device for simulating ocean acidification and hypoxic environment includes an air supply end formed by three groups of pipelines 1 and multiple test modules connected to the air supply end; the test module includes a reactor 2 and a PID controller 3, the PID controller 3 is provided with a data measurement port 1 and a data measurement port 2, the reactor 2 is also connected with an air intake pipe 4, and the air intake end of the air intake pipe 4 is connected to the three groups of pipelines 1; the data measurement port 2 is extended to the reactor 2, and the data measurement port 1 is connected to the air intake pipe 4.

[0018] In the specific implementation of the present invention, the three groups of pipelines 1 include an air pipe 5, a N2 pipe 6 and a CO2 pipe 7. The port inlet of the pipeline 1 is connected to a control valve 8. The port of the air inlet pipe 4 is connected to three groups of bronchi. The three groups of bronchi are respectively connected to the three groups of pipelines 1. The three groups of bronchi are all connected to a flow controller 9. The data measurement port 1 is connected to control the flow controller 9.

[0019] The end of the data measurement port 2 is also connected with a water body DO sensor 10 and a PH sensor 11. At the same time, in order to increase the aeration effect, the air outlet end of the air inlet pipe 4 is also connected with an aeration stone 12.

[0020] A test control device for simulating ocean acidification and hypoxia environment, characterized in that it comprises the following steps: S1: Build an experimental control device to simulate ocean acidification and hypoxia environment; S2: Select the corresponding number of test modules for installation according to the experimental content; S3: Preset the air, N2, and CO2 content of each experimental module, and use the flow controller 9 to count the air, N2, and CO2 used in each experimental module, and adjust the acidification and hypoxic conditions of the water in the reactor 2; S4: The water body information is monitored by the water body DO sensor 10 and the PH sensor 11 and fed back to the PID controller 3. The PID controller 3 adjusts the acidification and hypoxic conditions of the reactor 2 through a reverse control flow controller 9 at a data measurement port.

[0021] In actual application, multiple test modules can be set up to conduct experiments on the control group and the test group, such as: 1. No acidification and normal oxygen; 2. Acidification and oxygen are normal; 3. No acidification and hypoxia; 4. Acidification and hypoxia.

[0022] A variety of comparative test methods can be set up as needed. Air, N2, and CO2 are mixed after passing through the flow controller and connected to the reactor. Aeration is used to adjust water acidification and hypoxia conditions. Water DO and pH are measured by sensors and transmitted to the PID digital controller. The PID digital controller controls the air, N2, and CO2 flow controllers respectively according to the collected DO and pH information, adjusts the ratio and flow of each gas, and accurately and stably controls the acidification and hypoxia conditions of the reactor.

[0023] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0024] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

[0025] The scope of the present invention is defined by the appended claims and their equivalents, and therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention as claimed but merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A test control device for simulating ocean acidification and hypoxia environment, characterized in that: It comprises a gas supply end formed by three groups of pipelines (1) and a plurality of test modules connected to the gas supply end; The test module comprises a reactor (2) and a PID controller (3), wherein the PID controller (3) is provided with a data measurement port 1 and a data measurement port 2, and an air intake pipe (4) is also connected to the reactor (2), and an air intake end of the air intake pipe (4) is connected to three sets of pipelines (1); The second data measurement port is extended into the reactor (2), and the first data measurement port is connected to the air inlet pipe (4).

2. The test control device for simulating ocean acidification and hypoxia environment according to claim 1, characterized in that: The three groups of pipelines (1) include an air pipe (5), a N2 pipe (6) and a CO2 pipe (7), and the ports of the pipelines (1) are connected to control valves (8).

3. The test control device for simulating ocean acidification and hypoxia environment according to claim 2, characterized in that: The air inlet pipe (4) port is connected to three groups of bronchi, which are respectively connected to three groups of pipelines (1). The three groups of bronchi are all connected to flow controllers (9), and the data measurement port 1 is connected to control the flow controller (9).

4. The test control device for simulating ocean acidification and hypoxia environment according to claim 1, characterized in that: The end of the data measurement port 2 is also connected to a water body DO sensor (10) and a PH sensor (11).

5. The test control device for simulating ocean acidification and hypoxia environment according to claim 3, characterized in that: The air outlet end of the air inlet pipe (4) is also connected to an aeration stone (12).

6. A test method for simulating ocean acidification and hypoxia environment, applied to a test control device for simulating ocean acidification and hypoxia environment as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1: Build an experimental control device to simulate ocean acidification and hypoxia environment; S2: Select the corresponding number of test modules for installation according to the experimental content; S3: Preset the air, N2, and CO2 content of each experimental module, count the air, N2, and CO2 used by each experimental module through the flow controller (9), and adjust the acidification and hypoxic conditions of the water in the reactor (2); S4: The water body information is monitored and fed back to the PID controller (3) through the water body DO sensor (10) and the pH sensor (11). The PID controller (3) adjusts the acidification and hypoxic conditions of the reactor (2) by reversely controlling the flow controller (9) through the data measurement port.

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