CN215767877U - Automatic sampling device for greenhouse gas - Google Patents
Automatic sampling device for greenhouse gas Download PDFInfo
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- CN215767877U CN215767877U CN202121925395.8U CN202121925395U CN215767877U CN 215767877 U CN215767877 U CN 215767877U CN 202121925395 U CN202121925395 U CN 202121925395U CN 215767877 U CN215767877 U CN 215767877U
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Abstract
The utility model discloses an automatic greenhouse gas sampling device which comprises a static box, wherein the upper end part of the static box is connected with a sampling assembly through a gas production pipe, the sampling assembly comprises a sampling electromagnetic valve, a sampling pump, a vacuum electromagnetic valve, a vacuum pump and a three-way valve, a first port of the three-way valve is connected with one end of the sampling electromagnetic valve, the other end of the sampling electromagnetic valve is connected with the sampling pump, a second port of the three-way valve is connected with one end of the vacuum electromagnetic valve, the other end of the vacuum electromagnetic valve is connected with the vacuum pump, and a third port of the three-way valve is connected with a gas inlet of a gas bag. The utility model has the beneficial effects that: set up sampling pump, vacuum pump and air pocket respectively at the three port of three-way valve, second port and first port are provided with sampling solenoid valve and vacuum solenoid valve respectively moreover, therefore the sampling of air pocket and two big operating modes of evacuation can be carried out respectively, mutually noninterfere, through sampling pump and vacuum pump operation in turn, realize greenhouse gas automatic sampling, operation error can not appear.
Description
Technical Field
The utility model relates to the technical field of gas collection equipment, in particular to an automatic greenhouse gas sampling device.
Background
In scientific research of agriculture, forestry, ecology and the like, the total amount of carbon dioxide generated by metabolic activities of roots, fungi, microorganisms and the like in soil needs to be measured, namely soil respiration. Soil respiration is often used to measure the total activity of soil microorganisms and also to evaluate soil fertility, the dynamics of which have profound effects on global carbon balance.
In order to measure the soil respiration, the common practice is to fix a soil range with a certain area by a static box, and manually operate a needle cylinder and a three-way valve to collect the content of carbon dioxide generated by the soil respiration. And (3) using the needle cylinder and the three-way valve, partially pumping gas out of the sampling barrel in the first step, and cleaning a connecting pipeline between the sampling barrel and the needle cylinder. And secondly, vacuumizing the air bag by using the needle cylinder and the three-way valve. And thirdly, a syringe and a sampling bag are used for injecting gas into the barrel, the syringe with larger volume is generally used for the air bag with larger volume, and the syringe is required to be manually operated more than three times.
Due to the obvious heterogeneity of soil, a large number of repeated test sample plots are often required to be designed to reflect the soil respiration level of the region to meet the statistical requirement, and meanwhile, in order to accurately reflect the true strength of soil respiration, multiple sampling within a period of time is required. And because each sampling needs to be carried out simultaneously in all the sample chambers, more personnel and a great deal of manual operation are needed, and the operation of the three-way valve is easy to be wrong.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides an automatic greenhouse gas sampling device, which mainly solves the problems that the operation error is easy to realize and a large amount of manpower is required when a needle cylinder and a sampling bag are used for collecting greenhouse gas.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides an automatic sampling device of greenhouse gas, includes static case, the upper end of static case is passed through the gas production pipe and is connected with the sampling subassembly, the sampling subassembly includes sampling solenoid valve, sampling pump, vacuum solenoid valve, vacuum pump and three-way valve, the first port of three-way valve with wherein one end of sampling solenoid valve is connected, the other end of sampling solenoid valve with the sampling pump is connected, the second port of three-way valve with wherein one end of vacuum solenoid valve is connected, the other end of vacuum solenoid valve with vacuum pump connection, the third port of three-way valve is connected with the air inlet of air pocket.
In some embodiments, the vacuum sampling device further comprises a remote controller, a wireless transmitting module is arranged in the remote controller, a wireless receiving module in wireless communication with the wireless transmitting module and a control module electrically connected with the wireless receiving module are arranged in the sampling assembly, and the control module is electrically connected with the sampling electromagnetic valve and the vacuum electromagnetic valve respectively.
In some embodiments, the sampling assembly further contains a lithium battery therein for supplying power to the sampling solenoid valve, the sampling pump, the vacuum solenoid valve, the vacuum pump, the wireless receiving module, and the control module.
The utility model has the beneficial effects that: through setting up a three-way valve, set up sampling pump, vacuum pump and air pocket respectively at the three port of this three-way valve, second port and first port are provided with sampling solenoid valve and vacuum solenoid valve respectively moreover, therefore the sampling of air pocket and two big operating modes of evacuation can be carried out respectively, mutually noninterfere, through sampling pump and vacuum pump operation in turn, realize greenhouse gas automatic sampling, the operational error can not appear, has saved a large amount of manpowers.
Drawings
FIG. 1 is a schematic structural diagram of an automatic sampling device for greenhouse gases according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a sampling assembly according to an embodiment of the disclosure;
FIG. 3 is a schematic structural diagram of a sampling assembly and a remote controller according to an embodiment of the disclosure;
wherein: the system comprises a static box 1, a gas production pipe 2, a sampling assembly 3, an air bag 4, a remote controller 5, a sampling electromagnetic valve 31, a sampling pump 32, a vacuum electromagnetic valve 33, a vacuum pump 34, a three-way valve 35, a wireless receiving module 36, a control module 37, a lithium battery 38 and a wireless sending module 51.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the following detailed description of the present invention is provided with reference to the accompanying drawings and detailed description. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
As shown in fig. 1 and 2, the embodiment provides an automatic sampling device for greenhouse gases, which includes a static tank 1, an upper end portion of the static tank 1 is connected with a sampling assembly 3 through a gas production pipe 2, the sampling assembly 3 includes a sampling electromagnetic valve 31, a sampling pump 32, a vacuum electromagnetic valve 33, a vacuum pump 34 and a three-way valve 35, a first port of the three-way valve 35 is connected with one end of the sampling electromagnetic valve 31, the other end of the sampling electromagnetic valve 31 is connected with the sampling pump 32, a second port of the three-way valve 35 is connected with one end of the vacuum electromagnetic valve 33, the other end of the vacuum electromagnetic valve 33 is connected with the vacuum pump 34, and a third port of the three-way valve 35 is connected with a gas inlet of a gas bag 4.
In this embodiment, through setting up a three-way valve 35, set up sampling pump 32, vacuum pump 34 and air bag 4 respectively at this three-way valve 35's three port, and second port and first port are provided with sampling solenoid valve 31 and vacuum solenoid valve 33 respectively, therefore two operating modes of sampling and the evacuation of air bag 4 can be carried out respectively, mutual noninterference, through sampling pump 32 and vacuum pump 34 operation in turn, realize greenhouse gas automatic sampling, operation error can not appear, a large amount of manpowers have been saved.
The vacuum sampling device further comprises a remote controller 5, a wireless transmitting module 51 is arranged in the remote controller 5, a wireless receiving module 36 in wireless communication with the wireless transmitting module 51 and a control module 37 electrically connected with the wireless receiving module 36 are arranged in the sampling assembly 3, and the control module 37 is electrically connected with the sampling electromagnetic valve 31 and the vacuum electromagnetic valve 33 respectively. The wireless receiving module 36 is used for receiving signals from the remote controller 5, and one remote controller can control a plurality of sampling devices simultaneously. The wireless receiving modules 36 are arranged in the plurality of sampling assemblies 3, one-key remote control is arranged, remote control receiving signals sent by the wireless sending module 51 can trigger the sampling assemblies 3 connected on the plurality of static boxes 1 within 30-50 m of the diameter, so that simultaneous sampling at multiple points is ensured, and the sampling device is suitable for a mode with multiple sampling places and long spacing distance. The control module 37 adopts a PLC controller, and switches of the sampling electromagnetic valve 31, the sampling pump 32, the vacuum electromagnetic valve 33 and the vacuum pump 34 are set through program control.
Further, the sampling assembly 3 also houses a lithium battery 38, as shown in fig. 3, the lithium battery 38 is used for supplying power to the sampling solenoid valve 31, the sampling pump 32, the vacuum solenoid valve 33, the vacuum pump 34, the wireless receiving module 36 and the control module 37.
In this embodiment, the lithium battery 38 is powered by three 18650 lithium batteries, and the sampling assembly 3 is provided with a battery voltage capacity display screen, a power switch and a manual start switch.
The working principle is as follows: when the device is used, the device mainly comprises three processes of inflation, flushing and gas production, and the inflation is as follows: the control module 37 controls the vacuum electromagnetic valve 33 and the vacuum pump 34 to be closed, the sampling electromagnetic valve 31 and the sampling pump 32 are opened to work, and gas enters the gas bag 4 through the gas production pipe 2, the sampling electromagnetic valve 31, the sampling pump 32 and the three-way valve 35 to complete the inflation process; washing: then the control module 37 controls the sampling electromagnetic valve 31 and the sampling pump 32 to be closed, the vacuum electromagnetic valve 33 and the vacuum pump 34 are opened to work, and gas is exhausted from the air bag 4 to the outside through the three-way valve 35, the vacuum electromagnetic valve 33 and the vacuum pump 34, so that the air bag flushing process is completed; gas production: then the vacuum electromagnetic valve 33 and the vacuum pump 34 are closed, the sampling electromagnetic valve 31 and the sampling pump 32 are opened again, the gas enters through the gas production pipe 2, and enters the gas bag 4 through the sampling electromagnetic valve 31, the sampling pump 32 and the three-way valve 35, and the inflation process is completed, namely, the complete inflation, flushing and gas production process is completed.
Specifically, the remote controller 5 is provided with a manual button, the manual button outputs a trigger signal, the trigger signal is sent to the wireless receiving module 36 through the wireless sending module 51, the wireless receiving module 36 transmits the trigger signal to the control module 37, the control module 37 generates two paths of control signals according to the trigger signal, the first path of control signal controls the power on-off of the sampling electromagnetic valve 31 and the sampling pump 32, and the second path of control signal controls the power on-off of the vacuum electromagnetic valve 33 and the vacuum pump 34. The working steps are as follows: when the control module 37 receives the input trigger signal, a first path of signal of 5.0 seconds of power supply connection is output, the gas production pipe 2 and the gas bag 4 are cleaned, after 5.0 seconds, the first path of signal is disconnected and stops for 2 seconds, namely, a second signal of 8 seconds of power supply connection is output in 7.0 seconds to vacuumize the gas bag 4, a second path of power supply is disconnected in 15.0 seconds, and then the second path of signal is stopped for 2 seconds, namely, a first path of signal of 8 seconds of power supply connection is output in 17.0 seconds, the gas bag 4 is inflated and sampled, and the sampling work is completed in 25.0 seconds.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (3)
1. The utility model provides an automatic sampling device of greenhouse gas, includes static case, its characterized in that, the upper end of static case is passed through the gas production pipe and is connected with the sampling subassembly, the sampling subassembly includes sampling solenoid valve, sampling pump, vacuum solenoid valve, vacuum pump and three-way valve, the first port of three-way valve with wherein one end of sampling solenoid valve is connected, the other end of sampling solenoid valve with the sampling pump is connected, the second port of three-way valve with wherein one end of vacuum solenoid valve is connected, the other end of vacuum solenoid valve with vacuum pump connection, the third port of three-way valve is connected with the air inlet of air pocket.
2. The automatic greenhouse gas sampling device according to claim 1, further comprising a remote controller, wherein a wireless transmission module is arranged in the remote controller, a wireless receiving module in wireless communication with the wireless transmission module and a control module electrically connected with the wireless receiving module are arranged in the sampling assembly, and the control module is electrically connected with the sampling solenoid valve and the vacuum solenoid valve respectively.
3. The automatic greenhouse gas sampling device of claim 2, wherein the sampling assembly further contains a lithium battery therein, and the lithium battery is used for supplying power to the sampling solenoid valve, the sampling pump, the vacuum solenoid valve, the vacuum pump, the wireless receiving module and the control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121925395.8U CN215767877U (en) | 2021-08-17 | 2021-08-17 | Automatic sampling device for greenhouse gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121925395.8U CN215767877U (en) | 2021-08-17 | 2021-08-17 | Automatic sampling device for greenhouse gas |
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| CN215767877U true CN215767877U (en) | 2022-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115824729A (en) * | 2022-12-13 | 2023-03-21 | 山东省农业科学院 | Greenhouse gas collecting device |
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2021
- 2021-08-17 CN CN202121925395.8U patent/CN215767877U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115824729A (en) * | 2022-12-13 | 2023-03-21 | 山东省农业科学院 | Greenhouse gas collecting device |
| CN115824729B (en) * | 2022-12-13 | 2023-08-22 | 山东省农业科学院 | Greenhouse gas collection device |
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