CN216847102U - Static case of surface of water greenhouse gas flux automatic monitoring - Google Patents
Static case of surface of water greenhouse gas flux automatic monitoring Download PDFInfo
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- CN216847102U CN216847102U CN202220064576.4U CN202220064576U CN216847102U CN 216847102 U CN216847102 U CN 216847102U CN 202220064576 U CN202220064576 U CN 202220064576U CN 216847102 U CN216847102 U CN 216847102U
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Abstract
A water surface greenhouse gas flux automatic monitoring static box belongs to the technical field of greenhouse gas monitoring boxes. A micro inflator pump, an electromagnetic three-way valve, a 12V dry battery is fixed on an openable sealed PVC box through nanometer glue, a control panel is fixed on the PVC box with meshes through the nanometer glue, the sealed PVC box that can open is fixed on the polyethylene static case that covers there is the aluminium foil through the powerful glue, the PVC hose passes through on the inflation and deflation port of interface connection electromagnetism three-way valve and the inflatable floating ball that has the stereoplasm PVC board, SD memory card and methane, carbon dioxide, atmospheric pressure and temperature sensor fix on control panel through the welded mode, the PVC box that has the mesh is fixed on the polyethylene static case that covers there is the aluminium foil through the powerful glue, high strength polyethylene foam fixes on the polyethylene static case that covers there is the aluminium foil through the mode of ribbon ligature, the float passes through the high strength nylon rope and connects between high strength polyethylene foam and the iron anchor, miniature pump is linked together with the electromagnetism three-way valve.
Description
Technical Field
The utility model relates to a static case of surface of water greenhouse gas flux automatic monitoring belongs to greenhouse gas monitoring case technical field.
Background
The measurement of the greenhouse gas flux by the static box method is mainly based on: the concentration of the greenhouse gas in a closed space and a certain time can have linear change along with the time, and the monitoring of the greenhouse gas emission flux is obtained by monitoring the change of the concentration. The calculation of the greenhouse gas flux at the water-gas interface was determined by the following method:
F＝(dc/dt)·[(V·Pa)/(A·R·T)]·F1
wherein F is the greenhouse gas flux (mmol m)-2h-1)，dc/dtIs the rate of change of gas concentration in the static chamber with time (ppm min)-1) And V is the volume of the static tank (m)3) And A is the surface area (m) of the static tank in contact with the water body2)，PaIs the atmospheric pressure value (P) at that timea) R is a gas constant (m)3 Pa mol-1k-1) T is the temperature (K) in the static chamber, F1The conversion factor is from minutes to hours.
At present, the monitoring of the greenhouse gas flux by a static box method is mainly to manually extract air from a static box at specific time intervals, generally 5 times, with each time interval of 10 minutes, then return to a laboratory to measure the greenhouse gas concentration, fit a change curve of the concentration along with the time, and calculate the greenhouse gas flux; or the concentration of the greenhouse gas is monitored by connecting a portable greenhouse gas measuring instrument in the field.
The patent publication No. CN 105738161A discloses an automatic water surface greenhouse gas sampling static box, which is characterized in that collected gas is stored in a vacuum sampling bottle and then returned to a laboratory for measuring the concentration of greenhouse gas. The disadvantages are that: 1. the gas is stored in the sampling bottle for a long time and can cause gas leakage when exposed in the field, so that the result is inaccurate; 2. the limit of the number of sampling bottles and the volume of a static box is adopted, so that the high time resolution and long-time greenhouse gas data acquisition and monitoring can not be simultaneously met.
The invention patent with publication number CN 106525135 a discloses a closed type material flux automatic observation box, which is an automatic greenhouse gas monitoring device for land soil-air interface, and when applied to water surface, the disadvantages are as follows: 1. because a large storage battery module cannot be placed, the opening and closing device on the top of the storage battery module has larger power consumption and cannot be applied; 2. due to the fact that the top is opened and closed, when water waves and other conditions occur, short circuit of an instrument circuit board can be caused; 3. the portable analyzer needs to be connected, and different from a land interface, the analyzer is placed in a lake for a long time, so that the danger of water inlet and damage of the analyzer is easy to occur, and greater economic loss is caused; 4. the heavy weight of the instrument makes it impossible to float or is influenced by the weight of the static tank, which causes excessive pressure in the static tank, resulting in a large uncertainty in the result.
The utility model discloses a grant publication number CN 209495968U's utility model patent discloses a gaseous flux on-line monitoring device of grassland greenhouse, and its shortcoming is: 1. the base cannot be installed; 2. the instrument is heavy, and the pressure in the static box is easily overlarge, so that the accuracy is influenced; 3. the instrument can not be opened and closed on the water surface, and the automatic measurement of greenhouse gases with long time and high time resolution can not be carried out on the water surface.
At present, the measurement of the greenhouse gas flux of the water body by a static box method is mainly carried out by on-site manual air extraction and laboratory analysis or on-site connection of a portable instrument for measuring a specific time period, so that although a large amount of manpower and material resources are consumed, the high time resolution and long-time observation cannot be simultaneously met; and because manual operation is needed, the interference of environmental factors on water bodies such as lakes, reservoirs and the like is large, all-weather observation cannot be met, and multi-point deployment and monitoring cannot be rapidly carried out.
Disclosure of Invention
The utility model aims at solving the problems existing in the prior art and further providing a water surface greenhouse gas flux automatic monitoring static box.
The utility model aims at realizing through the following technical scheme:
a surface greenhouse gas flux automatic monitoring static tank comprising: the miniature inflator pump, the electromagnetic three-way valve, the control panel, the PVC hose, the SD memory card, the inflatable floating ball with a hard PVC plate, the 12V dry battery, the openable sealed PVC box, the PVC box with meshes, the polyethylene static box covered with aluminum foil, methane, carbon dioxide, air pressure and temperature sensors, the buoy, high-strength polyethylene foam, a high-strength nylon rope and an iron anchor, wherein the miniature inflator pump, the electromagnetic three-way valve, the 12V dry battery are fixed on the openable sealed PVC box through nano glue, the control panel is fixed on the PVC box with meshes through nano glue, the openable sealed PVC box is fixed on the polyethylene static box covered with aluminum foil through strong glue, the PVC hose is connected with the electromagnetic three-way valve and an air charging and discharging port of the inflatable floating ball with the hard PVC plate through interfaces, the SD memory card and the methane, carbon dioxide, air pressure and temperature sensors are fixed on the control panel through welding, the PVC box with the meshes is fixed on the polyethylene static box covered with the aluminum foil through a strong adhesive, the high-strength polyethylene foam is fixed on the polyethylene static box covered with the aluminum foil in a binding mode through a binding belt, the float is connected between the high-strength polyethylene foam and the iron anchor through a high-strength nylon rope, the miniature inflator pump is communicated with the electromagnetic three-way valve, a first air passage and a second air passage are arranged on the electromagnetic three-way valve, and a third air passage is arranged on the miniature inflator pump.
The utility model discloses simple structure, easy operation arranges swiftly, can improve the accuracy of data. Through the utility model discloses can realize the water-gas interface greenhouse gas flux monitoring of high time resolution ratio and long time sequence, reach the ability that has high time resolution ratio simultaneously and long-time, all-weather continuous monitoring.
Drawings
Fig. 1 is the overall structure schematic diagram of the utility model of the static case of surface of water greenhouse gas flux automatic monitoring.
Fig. 2 is a schematic view of the overlooking structure of the automatic monitoring static box for the flux of greenhouse gases on the water surface.
Fig. 3 is a schematic view of the structure of an inflatable floating ball with a rigid PVC plate.
Fig. 4 is a schematic diagram of a PVC box with meshes.
Fig. 5 is a schematic structural view of the top surface of a PVC mesh box.
Fig. 6 is a structural schematic view of an openable sealed PVC case.
In the figure, reference numerals, 1 is a micro inflator pump, 2 is an electromagnetic three-way valve, 3 is a control panel, 4 is a PVC hose, 5 is an SD memory card, 6 is an inflatable floating ball with a rigid PVC plate, 7 is a 12V dry battery, 8 is an openable sealed PVC box, 9 is a PVC box with meshes, 10 is a polyethylene static box covered with an aluminum foil, 11 is a methane, carbon dioxide, air pressure and temperature sensor, 12 is a float, 13 is a high-strength polyethylene foam, 14 is a high-strength nylon rope, 15 is an iron anchor, 16 is a power line perforation, 17 is a rigid PVC plate, 18 is a screw hole, 19 is a PVC tie, 20 is a floating ball inflation/deflation port, 21 is an inflatable floating ball, 22 is a mesh, 23 is a top surface, 24 is a power line interface, and 25 is a water surface. Reference numeral 41 denotes a first air duct, 42 denotes a second air duct, and 43 denotes a third air duct.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 and 2, the present embodiment relates to a water surface greenhouse gas flux automatic monitoring static tank, which comprises: the miniature inflator pump 1, the electromagnetic three-way valve 2, the control panel 3, the PVC hose 4, the SD memory card 5, the inflatable floating ball 6 with the hard PVC plate, the 12V dry battery 7, the openable sealed PVC box 8, the PVC box 9 with meshes, the polyethylene static box 10 covered with aluminum foil, methane, carbon dioxide, air pressure and temperature sensor 11, the float 12, the high-strength polyethylene foam 13, the high-strength nylon rope 14 and the iron anchor 15, wherein the miniature inflator pump 1, the electromagnetic three-way valve 2 and the 12V dry battery 7 are fixed on the openable sealed PVC box 8 through nano glue, the control panel 3 is fixed on the PVC box 9 with meshes through the nano glue, the openable sealed PVC box 8 is fixed on the polyethylene static box 10 covered with aluminum foil through the strong glue, the PVC hose 4 is connected with the electromagnetic three-way valve 2 and the inflation and deflation port of the inflatable floating ball 6 with the hard PVC plate through interfaces, SD memory card 5 and methane, carbon dioxide, atmospheric pressure and temperature sensor 11 are fixed on control panel 3 through the welded mode, PVC box 9 that has the mesh is fixed on the static case 10 of polyethylene that covers the aluminium foil through the powerful glue, high strength polyethylene foam 13 is fixed on the static case 10 of polyethylene that covers the aluminium foil through the mode of ribbon ligature, float 12 connects between high strength polyethylene foam 13 and the iron anchor 15 through high strength nylon rope 14, miniature pump 1 is linked together with electromagnetic three-way valve 2, be equipped with first air passage 41 and second air passage 42 on the electromagnetic three-way valve 2, be equipped with third air passage 43 on the miniature pump 1.
The openable sealed PVC box 8 is opened with a power cord penetration hole 16 for passing a power cord.
As shown in fig. 3, the inflatable floating ball 6 with the rigid PVC plate is composed of a rigid PVC plate 17, a PVC binding tape 19 and an inflatable floating ball 21, the rigid PVC plate 17 and the inflatable floating ball 21 are bound by the PVC binding tape 19, the upper portion of the rigid PVC plate 17 is provided with a screw hole 18, and the inflatable floating ball 21 is provided with a floating ball inflation and deflation port 20; an inflatable floating ball 6 with a rigid PVC plate is bolted to a polyethylene static tank 10 covered with aluminum foil through screw holes 18.
As shown in fig. 4, the PVC case 9 with meshes is provided with meshes 22 on the periphery in the horizontal direction.
The PVC box 9 with meshes is provided with meshes 22 at the periphery in the horizontal direction, and the purpose is to ensure that the polyethylene static box 10 covered with aluminum foil has the same greenhouse gas concentration as that measured by the methane, carbon dioxide, air pressure and temperature sensors 11, and also to prevent the control panel 3 from falling into water or being wetted by water.
As shown in fig. 5, the top surface 23 of the meshed PVC case 9 is provided with a control panel 3, and the control panel 3 is provided with an SD memory card 5, a methane, carbon dioxide, air pressure and temperature sensor 11, and a power line interface 24.
As shown in fig. 6, the 12V dry cell 7 supplies power to the micro inflator 1, the electromagnetic three-way valve 2 (and the control panel 3). When the micro inflator pump 1 and the electromagnetic three-way valve 2 are electrified, the air passage of the electromagnetic three-way valve 2 is the second air passage 42, air enters the micro inflator pump 1 through the third air passage 43 and then enters the inflatable floating ball 6 with the hard PVC plate through the second air passage 42; when the electromagnetic three-way valve 2 is powered off, the air passage of the electromagnetic three-way valve 2 is switched to the first air passage 41, and the air in the inflatable floating ball 6 with the hard PVC plate is subjected to the gravity action of the polyethylene static box 10 covered with the aluminum foil, passes through the electromagnetic three-way valve 2 from the second air passage 42, and is then discharged to the outside air through the first air passage 41.
The micro inflator 1 has an air inlet and an air outlet. Wherein, the air outlet is connected with the electromagnetic three-way valve 2, and the air inlet (the third air passage 43) is used for connecting the miniature inflator pump 1 to suck air. When the power is on, the air in the air inlet (the third air passage 43) enters the inflatable floating ball 6 with the hard PVC plate through the second air passage 42 by the micro inflator 1; when the power is cut off, the second air passage 42 is communicated with the first air passage 41, and the second air passage 42 is not communicated with the third air passage 43, so that the air is discharged from the inflatable floating ball 6 with the hard PVC plate to the air.
The detection method comprises the following steps:
1. in the laboratory, firstly, the control panel 3 is used for setting the once sampling time of the greenhouse gas flux to be 40 minutes, and the lifting time of one corner of the polyethylene static box 10 covered with the aluminum foil to be 20 minutes; secondly, setting the recording frequency of data in the sensor to be 10 seconds, recording once, and recording all the time during the sampling period; thirdly, setting the inflation time of the micro inflator pump 1 to be 5 minutes when air is replaced, inflating the inflatable floating ball 6 with the hard PVC plate to lift one corner of the polyethylene static box 10 covered with the aluminum foil, and simultaneously keeping the energization time of the three-way electromagnetic valve 2 to be 10 minutes to ensure that the air in the polyethylene static box 10 covered with the aluminum foil is fully replaced; and fourthly, after 10 minutes, the three-way electromagnetic valve 2 is set to be closed, the air in the inflatable floating ball 6 with the hard PVC plate is discharged into the air through the three-way electromagnetic valve 2, one corner of the polyethylene static box 10 covered with the aluminum foil is lifted to sink into the water, and the data acquisition of the next stage is continued.
2. Before use, the miniature inflator pump 1, the electromagnetic three-way valve 2 and the 12V dry battery 7 are glued into the openable sealed PVC box 8 through the nano glue, and the control panel 3 is glued into the PVC box 9 with meshes; an openable sealed PVC box 8 and a PVC box 9 with meshes are stuck in a polyethylene static box 10 covered with aluminum foil through strong glue; an inflatable floating ball 6 with a hard PVC plate is fixed on a polyethylene static box 10 covered with aluminum foil through a bolt, the inflatable floating ball 6 with the hard PVC plate is connected on an electromagnetic three-way valve 2 through a PVC hose 4, a miniature inflator pump 1 is connected with the electromagnetic three-way valve 2 through a PVC pipe, and a power supply is turned on. The iron anchor 15, the float 12 and the polyethylene static tank 10 covered with aluminum foil are connected by a high-strength nylon rope 14.
3. After the sampling point is reached, the iron anchor 15 is put down, the length of the high-strength nylon rope 14 is adjusted, and the buoy 12 and the polyethylene static box 10 covered with the aluminum foil are respectively put down for data acquisition.
4. After the data acquisition is completed, the instrument is taken back to the laboratory, the SD memory card 5 is taken out, and the SD memory card is put into a computer to read data, so that the flux of the greenhouse gas on the water-gas interface is calculated.
The above description is only the preferred embodiments of the present invention, and these embodiments are all based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A water surface greenhouse gas flux automatic monitoring static tank comprising: the miniature inflator pump, the electromagnetic three-way valve, the control panel, the PVC hose, the SD memory card, the inflatable floating ball with the hard PVC plate, the 12V dry battery, the openable sealed PVC box, the PVC box with meshes, the polyethylene static box covered with aluminum foils, methane, carbon dioxide, air pressure and temperature sensors, the buoy, high-strength polyethylene foam, a high-strength nylon rope and an iron anchor are characterized in that the miniature inflator pump, the electromagnetic three-way valve and the 12V dry battery are fixed on the openable sealed PVC box through nano glue, the control panel is fixed on the PVC box with meshes through the nano glue, the openable sealed PVC box is fixed on the polyethylene static box covered with aluminum foils through the strong glue, the PVC hose is connected with the electromagnetic three-way valve and the charging and discharging port of the inflatable floating ball with the PVC hard plate through a connector, and the SD memory card, the methane, the carbon dioxide and the methane are fixed on the charging and discharging port of the inflatable floating ball with the hard PVC plate, Air pressure and temperature sensor pass through the welded mode to be fixed on control panel, the PVC box that has the mesh is fixed on the static case of polyethylene that covers there is the aluminium foil through the powerful glue, high strength polyethylene foam passes through the mode of ribbon ligature to be fixed on the static case of polyethylene that covers there is the aluminium foil, the float is connected between high strength polyethylene foam and the iron anchor through high strength nylon rope, miniature pump is linked together with the electromagnetism three-way valve, be equipped with first air passage and second air passage on the electromagnetism three-way valve, be equipped with the third air passage on the miniature pump.
2. The static tank for automatically monitoring greenhouse gas flux on the water surface as claimed in claim 1, wherein the inflatable floating ball with the hard PVC plate is composed of a hard PVC plate, a PVC tie and an inflatable floating ball, the hard PVC plate and the inflatable floating ball are bound by the PVC tie, the upper part of the hard PVC plate is provided with a screw hole, and the inflatable floating ball is provided with a floating ball charging and discharging port; an inflatable floating ball with a rigid PVC plate was bolted through screw holes to a polyethylene static box covered with aluminum foil.
3. The static tank for automatically monitoring flux of greenhouse gases on water surface as claimed in claim 2, wherein the PVC box with meshes is provided with meshes on the periphery in horizontal direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220064576.4U CN216847102U (en) | 2022-01-11 | 2022-01-11 | Static case of surface of water greenhouse gas flux automatic monitoring |
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| CN202220064576.4U CN216847102U (en) | 2022-01-11 | 2022-01-11 | Static case of surface of water greenhouse gas flux automatic monitoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116380720A (en) * | 2023-03-03 | 2023-07-04 | 中国长江三峡集团有限公司 | Online gas flux detection system and method for gas-liquid interface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116380720A (en) * | 2023-03-03 | 2023-07-04 | 中国长江三峡集团有限公司 | Online gas flux detection system and method for gas-liquid interface |
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