Portable wetland soil greenhouse gas flux measuring instrument suspension device

Abstract

The utility model relates to the field of wetland soil greenhouse gas flux measurement, concretely relates to a portable wetland soil greenhouse gas flux measuring instrument suspension device. Provide buoyancy through the setting of suspension plate, avoid measuring instrument direct contact water body or silt. Through the setting instrument installation slot, play steady place LI-7810 etc. Measuring instrument, prevent its slide, dump or splash water, guarantee the safety and the stability of measurement of instrument. Through the setting adjustable length's support leg subassembly, adopt the first support leg and second support leg of nested connection, use the locating pin insertion different first locating hole and second locating hole to adjust support leg total length. Make device can adapt to the variable water level condition and uneven silt surface in wetland, ensure that instrument is always in safe, balanced, stable measurement state. Solveed the problem that LI-7810 gas analyzer etc. Precise instrument cannot be used directly in wetland environment, difficult to realize small scale wetland soil greenhouse gas in situ measurement.

Description

Technical Field

[0001] This utility model relates to the field of wetland soil greenhouse gas flux measurement technology, and in particular to a portable wetland soil greenhouse gas flux measurement instrument suspension device. Background Technology

[0002] Wetlands are important urban ecosystems, playing an irreplaceable ecological role in the urban environment. As biodiverse and highly productive ecosystems, the long-term or seasonal flooding conditions of wetlands allow wetland soils to store abundant organic matter. Under the dominance of microorganisms, the decomposition of organic matter produces CO2; under the action of methanogenic bacteria in an anaerobic environment, CH4 is generated; and N2O is released through nitrification or denitrification processes. The amount of greenhouse gases emitted or absorbed into the atmosphere by wetland soil per unit time and per unit area is called wetland soil greenhouse gas flux. This indicator directly reflects the role of wetlands in the global carbon and nitrogen cycle and is a key parameter for assessing the impact of wetland ecosystems on climate change.

[0003] Currently, the main method for measuring greenhouse gas emissions in wetland soils at a large regional scale is the eddy covariance technique. This involves establishing a flux tower and combining it with an ecological model to estimate greenhouse gas emissions in wetland soils at a large regional scale. For small-scale wetland soil greenhouse gas measurements, instruments such as the LI-7810 gas analyzer are mainly used. However, this precision instrument cannot be directly used in wetland environments. Therefore, a levitation device needs to be designed to suspend and fix the instrument in the wetland water, enabling the LI-7810 gas analyzer to measure greenhouse gas emissions in wetland soils at different water levels. Utility Model Content

[0004] To address the issue that precision instruments such as the LI-7810 gas analyzer cannot be used directly in wetland environments, making it difficult to achieve in-situ measurement of greenhouse gases in small-scale wetland soils.

[0005] This utility model provides a portable wetland soil greenhouse gas flux measuring instrument suspension device, including: a suspension plate and a support leg assembly. The suspension plate has an instrument mounting groove at its upper center and a support leg mounting groove at its edge. The support leg assembly includes a first support leg, a second support leg, and a positioning pin. The first support leg has at least two first positioning holes, and the second support leg has at least two second positioning holes. The bottom of the second support leg is an inverted conical structure. The top of the first support leg is installed in the support leg mounting groove, and the second support leg is located inside the first support leg. The first support leg and the second support leg are connected by the positioning pin passing through the first positioning holes and the second positioning holes.

[0006] Preferably, the suspension plate is provided with a handle on the side.

[0007] Preferably, the outrigger mounting slot is provided with a connecting pipe for connecting the suspension plate and the first outrigger.

[0008] Preferably, both the first positioning hole and the second positioning hole are provided with plugs.

[0009] Preferably, the suspension plate has a square structure, and there are four support leg mounting slots located at the four corners of the suspension plate, with four sets of support leg assemblies corresponding to each slot.

[0010] Preferably, the instrument mounting slot has a circular structure.

[0011] Preferably, the length of the first leg is 80-120cm, and the length of the second leg is 80-120cm.

[0012] Preferably, there are at least 8 first positioning holes, which are evenly distributed along the axial direction of the first leg, and at least 8 second positioning holes, which are evenly distributed along the axial direction of the second leg.

[0013] The beneficial effects of this utility model are reflected in: By setting up a suspension plate to provide buoyancy, the entire device floats on the surface of the wetland water, avoiding direct contact between the measuring instrument and the water or silt, and preventing the instrument from getting damp, corroded or damaged.

[0014] By setting up instrument mounting slots, gas analyzers such as the LI-7810 can be securely placed, preventing them from sliding, tipping over, or splashing water, thus ensuring the safety of the instruments and the stability of measurements.

[0015] By incorporating an adjustable-length support leg assembly, with nested first and second legs, and adjusting the total length of the legs using locating pins inserted into different first and second locating holes, the device can adapt to varying water levels and uneven silt surfaces in wetlands, ensuring the instrument remains in a safe, balanced, and stable measurement state.

[0016] By designing the bottom of the second leg as an inverted cone structure, the first and second legs can be easily inserted into the wetland silt, serving as an anchor and preventing the device from drifting due to wind, waves, or water currents.

[0017] The device adopts a modular design, consisting of a detachable suspension plate and support components. It is lightweight and compact, making it easy for researchers to carry to multiple measurement points in the field and to quickly assemble and disassemble on-site, thus improving measurement efficiency.

[0018] This solves the problem that precision instruments such as the LI-7810 gas analyzer cannot be used directly in wetland environments, making it difficult to achieve in-situ measurement of greenhouse gases in small-scale wetland soil. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the suspension device for a portable wetland soil greenhouse gas flux measuring instrument provided by this utility model.

[0020] Figure 2 This is a cross-sectional structural schematic diagram of the suspension device of a portable wetland soil greenhouse gas flux measuring instrument provided by this utility model.

[0021] In the diagram: 1-Suspension plate; 11-Instrument mounting slot; 12-Leg mounting slot; 13-Handle; 14-Connecting pipe; 2-Leg assembly; 21-First leg; 211-First positioning hole; 22-Second leg; 221-Second positioning hole; 23-Positioning pin; 24-Hole plug. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Reference Figures 1-2 A portable wetland soil greenhouse gas flux measuring instrument suspension device includes: a suspension plate 1 and a support leg assembly 2. The suspension plate 1 has an instrument mounting groove 11 at its upper center and a support leg mounting groove 12 at its edge. The support leg assembly 2 includes a first support leg 21, a second support leg 22 and a positioning pin 23. The first support leg 21 has at least two first positioning holes 211 and the second support leg 22 has at least two second positioning holes 221. The bottom of the second support leg 22 is an inverted conical structure. The top of the first support leg 21 is installed in the support leg mounting groove 12, and the second support leg 22 is located inside the first support leg 21. The first support leg 21 and the second support leg 22 are connected by the positioning pin 23 passing through the first positioning holes 211 and the second positioning holes 221.

[0024] The suspension plate 1 provides buoyancy, allowing the entire device to float on the wetland surface, preventing the measuring instrument from directly contacting the water or silt and protecting it from moisture, corrosion, or damage. The instrument mounting slot 11 securely holds measuring instruments such as the LI-7810, preventing slippage, tipping, or splashing, ensuring instrument safety and measurement stability. An adjustable-length support leg assembly 2, with nested first and second legs 22, allows for adjustment of the total leg length using positioning pins 23 inserted into different first and second positioning holes 211 and 221. This adapts the device to varying water levels and uneven silt surfaces in the wetland, ensuring the instrument remains in a safe, balanced, and stable measuring state. The inverted conical base of the second leg 22 allows the first and second legs 21 and 22 to easily insert into the wetland silt, providing anchoring and preventing the device from drifting due to wind, waves, or currents. The device adopts a modular design, consisting of a detachable suspension plate 1 and supporting components. It is lightweight and compact, making it easy for researchers to carry to multiple field measurement points and quickly assemble and disassemble on-site, thus improving measurement efficiency. It solves the problem that precision instruments such as the LI-7810 gas analyzer cannot be used directly in wetland environments, making it difficult to achieve in-situ measurement of greenhouse gases in wetland soil at a small scale.

[0025] In some embodiments, the suspension plate 1 is provided with a handle 13 on its side.

[0026] By providing a handle 13, it is easy for staff to lift and move the suspension device; avoid directly grasping the edge of the support leg assembly 2 or the suspension plate 1, reduce accidental damage to the positioning pin 23, and prevent the measuring instrument from falling off due to shaking during transportation.

[0027] In some embodiments, the outrigger mounting slot 12 is provided with a connecting pipe 14 for connecting the suspension plate 1 and the first outrigger 21.

[0028] By using the connecting pipe 14, the first leg 21 is more securely connected to the suspension plate 1, avoiding stress concentration or loosening that may occur from a direct rigid connection between the leg and the suspension plate 1, thus improving the structural stability of the overall device in wind, waves, or uneven wetlands. The connecting pipe 14 is made of stainless steel.

[0029] In some embodiments, both the first positioning hole 211 and the second positioning hole 221 are provided with a hole plug 24.

[0030] By setting the plug 24, the first positioning hole 211 and the second positioning hole 221 that are not penetrated by the positioning pin 23 are blocked, preventing mud, water and debris from entering the interior of the first leg 21 and the second leg 22.

[0031] In some embodiments, the suspension plate 1 has a square structure, and the support leg mounting slots 12 are provided with four slots located at the four corners of the suspension plate 1, and the support leg assemblies 2 are provided with four sets accordingly.

[0032] By setting support leg assemblies 2 at the four corners of the suspension plate 1, a stable four-point support structure is formed, effectively distributing the weight of the measuring instrument and the suspension device, preventing the device from tilting or overturning due to a shift in the center of gravity, and improving overall stability. On the other hand, sufficient space is left in the middle of the suspension plate 1 to place the measuring instrument and the connecting pipe 14, preventing the support legs from interfering with the operation of the measuring instrument.

[0033] In some embodiments, the instrument mounting slot 11 is an annular structure.

[0034] Many gas analyzers, such as the LI-7810 or its associated sampling hood, the bottom of the enclosed housing, or the support structure, are often circular or nearly circular. A ring-shaped mounting slot can perfectly match the instrument's shape, providing circumferential restraint and preventing the instrument from rotating or shifting within the slot. Besides ring shapes, the mounting slot can also be designed in a corresponding square or irregular shape to suit the shape of the measuring instrument.

[0035] In some embodiments, the length of the first leg 21 is 80-120cm, and the length of the second leg 22 is 80-120cm.

[0036] Since wetland water depths can range from tens of centimeters to over one meter, by setting the lengths of both the first leg 21 and the second leg 22 to 80-120cm, a sufficiently large and flexible height adjustment range is provided for the suspension device to cope with the complex and variable water levels and bottom sediment conditions in real wetland environments.

[0037] In some embodiments, at least eight first positioning holes 211 are provided and are evenly distributed along the axial direction of the first leg 21, and at least eight second positioning holes 221 are provided and are evenly distributed along the axial direction of the second leg 22.

[0038] Preferably, there are 8 first positioning holes 211 and 8 second positioning holes 221, and the hole spacing is 10cm. The length of the first leg 21 and the second leg 22 is 100cm. A single first leg 21 or second leg 22 can provide 8 adjustment positions within a 100cm range, and the adjustment accuracy can reach at least 10cm, which meets the requirements for precise control of the height of the instrument above the ground or above the water.

[0039] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "assembly" 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 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 based on the specific circumstances.

[0040] In the description of the embodiments of this utility model, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable wetland soil greenhouse gas flux measurement instrument suspension device, characterized in that: include: The suspension plate and support leg assembly have an instrument mounting slot at the center of the upper part of the suspension plate and a support leg mounting slot at the edge of the suspension plate. The support leg assembly includes a first support leg, a second support leg, and a positioning pin. The first support leg has at least two first positioning holes, and the second support leg has at least two second positioning holes. The bottom of the second support leg is an inverted conical structure. The top of the first support leg is installed in the support leg mounting slot, and the second support leg is located inside the first support leg. The first support leg and the second support leg are connected by the positioning pin passing through the first positioning holes and the second positioning holes.

2. The levitation device for a portable wetland soil greenhouse gas flux measuring instrument according to claim 1, characterized in that: The suspension plate is equipped with a handle on its side.

3. The levitation device for a portable wetland soil greenhouse gas flux measuring instrument according to claim 1, characterized in that: The outrigger mounting slot is equipped with a connecting pipe, which is used to connect the suspension plate and the first outrigger.

4. The levitation device for a portable wetland soil greenhouse gas flux measuring instrument according to claim 1, characterized in that: Both the first positioning hole and the second positioning hole are provided with plugs.

5. The levitation device for a portable wetland soil greenhouse gas flux measuring instrument according to claim 1, characterized in that: The suspension plate has a square structure, and there are four support leg mounting slots located at the four corners of the suspension plate. There are four sets of support leg assemblies.

6. The levitation device for a portable wetland soil greenhouse gas flux measuring instrument according to claim 1, characterized in that: The instrument mounting slot has a circular structure.

7. The levitation device for a portable wetland soil greenhouse gas flux measuring instrument according to claim 1, characterized in that: The length of the first leg is 80-120cm, and the length of the second leg is 80-120cm.

8. A levitation device for a portable wetland soil greenhouse gas flux measuring instrument according to claim 1 or 7, characterized in that: The first positioning hole has at least 8 holes, which are evenly distributed along the axial direction of the first leg. The second positioning hole has at least 8 holes, which are evenly distributed along the axial direction of the second leg.

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