Portable split greenhouse gas collecting device

Abstract

The utility model discloses a portable split greenhouse gas collecting device. The device comprises a separable box body (1), a heightening ring (2) and a base (3). The separable box body is formed by combining two independent semicircular box bodies made of acrylic plates, a magnet (1-3) and a sealing strip (1-2) are arranged on the section of the separable box body, the bottoms of the separable box body are aligned when the separable box body is used, and the box body can be completely sealed after the separable box body is folded. The heightening ring (2) can be used independently or in combination according to the height of the plant. The base (3) is made of aluminum alloy, and a groove (3-1) is formed in the upper portion of the base (3). When the device is used for collecting gas, gas collection can be carried out on plant systems with different heights, and the problem that greenhouse gas collection of high-stem plant (such as corn and sorghum) systems is difficult at present is solved. When the device is used for collecting gas in a soil-plant system, greenhouse gas collection of a high-stem plant system can be realized, and the device has the characteristics of convenience in operation and lightness.

Description

Technical Field

[0001] This invention relates to the field of greenhouse gas collection technology for farmland soil-plant systems, and more specifically, to a portable, modular greenhouse gas collection device. Background Technology

[0002] On the one hand, soil-plant systems are a significant source of atmospheric greenhouse gases (such as CO2, CH4, and N2O). Changes in atmospheric greenhouse gas concentrations lead to a series of global environmental effects, such as the intensification of the greenhouse effect, global warming, and ozone layer thinning. Therefore, accurate monitoring of greenhouse gases in soil-plant systems is crucial. On the other hand, measuring carbon dioxide emission fluxes, photosynthetic rates, and respiration rates in soil-plant systems is vital in agricultural production. Data collection from crops such as wheat, corn, and rice is particularly important for research aimed at improving crop yields and quality. Therefore, effective collection of gases from farmland soil-plant systems is the foundation and prerequisite for accurate measurement of these gases.

[0003] Currently, there are two main methods for gas collection in agricultural production: static dark box and instrument-based methods. Static dark box methods are limited to collecting data from soil-plant systems of short-stalked plants like wheat, and the boxes are large and heavy, making them inconvenient to move and use in the field. Instrument-based methods are limited by low measurement accuracy, failing to accurately reflect the greenhouse gas emission rate of the plant-soil system. Neither of these methods can collect gas from tall plants like corn. Therefore, many research efforts are severely limited. Summary of the Invention

[0004] The purpose of this invention is to provide a portable split-type greenhouse gas collection device. Using this device, gases from soil-plant systems composed of plants of different heights can be effectively collected. This effectively solves the problem of not being able to collect gases from farmland with tall crops. It also features wide applicability, low cost, lightweight design, and easy operation.

[0005] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted:

[0006] This invention proposes a portable split greenhouse gas collection device, characterized by comprising a detachable box (1), a heightening ring (2), and a base (3). The lower part of the base (3) is inserted into the soil and fixed. A suitable heightening ring (2) is selected according to the measured plant height. Water is filled into the first groove (2-1) on the upper part of the heightening ring (2). The fan (1-1) and thermometer (1-5) switches on the top of the detachable box (1) are turned on. The detachable box (1) is aligned and closed and placed in the first groove (2-1) on the upper part of the heightening ring (2), so that a closed space is formed from the ground to the top of the box, thereby collecting the gas emitted by the soil-plant system.

[0007] The detachable box (1) has a magnet (1-3) and a sealing strip (1-2) on its cross section. The two boxes on the left and right sides of the detachable box (1) are attracted to each other by magnetic force to close the boxes and achieve a sealing effect.

[0008] Preferably, the separable box (1) is a split type, consisting of two semi-circular boxes on the left and right sides;

[0009] Preferably, the detachable box (1) is made of acrylic sheet, a polymer material, which is lightweight and easy to operate;

[0010] Preferably, the separable box (1) has a silver coating inside and is wrapped with heat insulation material on the outside, which isolates the heat conduction between the inside and outside of the box to the maximum extent, slows down the temperature change inside the box, and ensures that the temperature inside the box is constant during the gas collection process.

[0011] Preferably, the outer wall of the left and right connecting parts of the separable box (1) is glued with strong glue or 502 glue to the strip magnet (1-3);

[0012] Preferably, the cross-section is provided with a sealing strip (1-2), which is made of silicone rubber, has a flat and compressible surface, and can achieve complete sealing of the box;

[0013] Preferably, the detachable box (1) has a DC small fan (1-1) on the top of the left box and a thermometer (1-5) and an exhaust port (1-4) on the right box wall;

[0014] Preferably, the DC electric fan (1-1) can fully mix the gas inside the chamber;

[0015] Preferably, the air extraction hole (1-4) is made of nitrile rubber or ethylene propylene rubber, which has good sealing performance and elastic recovery. During use, the rubber plug is tightly connected with the notch of the box. After multiple air extraction and puncture, the rubber plug can maintain good sealing performance.

[0016] Preferably, the detachable box (1) can be directly inserted into the base (3), and tall plants can choose a height-adjusting ring (2) of the corresponding height, or the detachable box (1) can be directly inserted into the first groove (2-1) of the height-adjusting ring (2); filling the first groove (2-1) with water can achieve complete sealing;

[0017] A thermometer (1-5) is provided in the middle of the separable box (1) to measure the temperature of the gas inside the box.

[0018] The detachable housing (1) has air extraction holes (1-4) with rubber rings on its walls for gas collection.

[0019] Preferably, the separable box (1) can be made in different height specifications such as 100cm and 160cm, and can be used in conjunction with height-increasing rings (2) as needed;

[0020] Preferably, the measurement range of the device can be adjusted by selecting different heights of the height-increasing rings (2), which can be made into heights of 30cm, 50cm, 70cm, 90cm, etc. as needed;

[0021] Preferably, the number of height-increasing rings (2) is stackable, and different combinations of height-increasing rings (2) can be selected as needed to achieve the required experimental height;

[0022] The upper part of the heightening ring (2) is provided with a groove (2-1), which can achieve the sealing of the box after the groove (2-1) is filled with water.

[0023] The appropriate height can be selected individually or in combination according to the height of the plant being measured. Combined with the separable box (1), it can meet the gas collection needs of soil-plant systems at different heights.

[0024] The base (3) is made of stainless steel and consists of two parts: an upper part is a groove (3-1) and a lower part is a single-layer wall that can be inserted into the soil. The groove (3-1) can be sealed after being filled with water.

[0025] The lower part of the base (3) has equidistant and equal diameter circular holes (3-2) on the side wall of the part inserted into the soil, which facilitates the lateral transport of water, soil microorganisms, nutrients, etc.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] The gas collection device provided by this invention consists of a detachable housing (1), a heightening ring (2), and a base (3). During use, the appropriate detachable housing (1) or heightening ring (2) can be selected based on the plant's height. After assembly, gas collection is performed on soil-plant systems of different heights. The detachable housing (1) has advantages such as lightweight material, strong impact resistance, and good sealing effect. Its greatest advantage is that it eliminates the need to raise the device to seal the plant-soil system through the top of the plant, greatly increasing the convenience of data collection. Attached Figure Description

[0028] To more intuitively illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Figure 1 This is the front view of the present invention;

[0030] Figure 2 Here are a schematic diagram and a cross-sectional view of the detachable housing (1) of the present invention;

[0031] Figure 3 This is a schematic diagram of the height-increasing ring (2) of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the base (3) of the present invention;

[0033] Explanation of reference numerals in the attached diagram: 1-Separable housing; 1-1-DDC small fan; 1-2-Sealing strip; 1-3-Bar magnet; 1-4-Exhaust vent; 1-5-Thermometer; 2-Heightening ring; 2-1-First groove; 3-Base; 3-1 Second groove; 3-2-Round hole. Detailed Implementation

[0034] The embodiments of the present invention will be described in detail below with reference to examples. However, those skilled in the art will understand that the following examples are for illustrative purposes only and should not be considered as limiting the scope of the invention. Unless otherwise specified in the examples, conventional conditions or conditions recommended by the manufacturer shall apply.

[0035] According to the structural features of the present invention, the device is divided into a separable box (1), a heightening ring (2), and a base (3). The separable box (1) is composed of two semi-circular boxes made of separate acrylic plates, with their bottoms aligned and fixed in the second groove (3-1) of the base (3) after being closed.

[0036] When using the above experimental device, first insert the lower part of the base (3) into the soil and fix it. The upper part of the base (3) is provided with a second groove (3-1). Fill the second groove (3-1) with water to ensure the sealing of the device.

[0037] The height and number of height-increasing rings (2) to be used are determined based on the height of the soil-plant system to be collected, and combined with the base (3). The upper groove (3-1) must be filled with water.

[0038] Align the bottoms of the left and right sides of the separable box (1), and fix them together in the first groove (2-1) of the riser ring (2) filled with water. The joint between the left and right parts is provided with a bar magnet (1-3) and a compressible sealing strip (1-2) to achieve a complete seal of the box when the two parts are assembled.

[0039] The separable chamber (1) has a built-in DC electric fan (1-1) on the upper part of the left chamber and a thermometer (1-5) in the middle of the right chamber to meet the requirements of experimental control variables. The right side has an air extraction hole (1-4) to extract the collected gas.

[0040] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

[0041] Example 1.

[0042] To collect greenhouse gases from agricultural systems, this invention—a portable, split-type greenhouse gas collection device—is needed to collect greenhouse gases from maize agricultural systems at different growth stages. The maize growth period is divided into three stages: the first stage is 0-27 days, with maize height between 50-100m; the second stage is 30-60 days, with maize height between 110-190cm; and the third stage is 60-120 days, with maize height between 180-230cm.

[0043] Based on the above division of growth stages, the base (3) and the detachable box (1) are used directly in the first stage. The lower part of the base (3) is inserted into the soil around a certain area of ​​corn seedlings in the experimental farmland. Water is filled into the second groove (3-1) on the upper part of the base (3). Then, the bottoms of the left and right parts of the detachable box (1) are aligned, closed and fixed in the second groove (3-1) of the base (3). The power of the fan (1-1) is turned on.

[0044] In the second stage, fix the 90cm height-increasing ring (2) onto the base (3), fill the first groove (2-1) on the upper part of the height-increasing ring with water, and then fix the detachable box (1) onto the height-increasing ring (2). Repeat the above operation.

[0045] In the third stage, a 50cm heightening ring (2) is added and fixed on top of the 90cm heightening ring (2) in the above operation. After filling the first groove (2-1) on the top of the heightening ring (2) with water, the detachable box (1) is assembled. The above operation is repeated.

[0046] After a certain period of time, the collected gas is extracted through the gas extraction port (1-4) using the gas sampling pipe.

[0047] The above-described method and apparatus are used to collect gases from corn at three stages, and then the collected gases are measured.

[0048] Although the invention has been illustrated and described with reference to specific embodiments, it should be understood that many other changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, it is intended that all such changes and modifications falling within the scope of the invention be included in the appended claims.

Claims

1. A portable, split-type greenhouse gas collection device, characterized in that, Includes a detachable box (1), a heightening ring (2), and a base (3). Insert the lower part of the base (3) into the soil and fix it. Select a suitable heightening ring (2) according to the measured plant height. Fill the first groove (2-1) on the upper part of the heightening ring (2) with water. Turn on the fan (1-1) and thermometer (1-5) switch on the top of the detachable box (1). Align the detachable box (1), close it, and place it in the first groove (2-1) on the upper part of the heightening ring (2) to form a closed space from the ground to the top of the box, thereby collecting the gas discharged by the soil-plant system.

2. The portable split-type greenhouse gas collection device according to claim 1, characterized in that, The detachable box (1) has a magnet (1-3) and a sealing strip (1-2) on its cross section. The two boxes on the left and right sides of the detachable box (1) are attracted to each other by magnetic force to close the boxes and achieve a sealing effect.

3. The portable split-type greenhouse gas collection device according to claim 1, characterized in that, The separable enclosure (1) has a silver coating inside and is wrapped with heat insulation material on the outside, which isolates the heat conduction inside and outside the enclosure to the maximum extent.

4. The portable split-type greenhouse gas collection device according to claim 1, characterized in that, A thermometer (1-5) is provided in the middle of the separable box (1) to measure the temperature of the gas inside the box.

5. The portable split-type greenhouse gas collection device according to claim 1, characterized in that, The detachable housing (1) has a gas extraction hole (1-4) with a rubber ring on its wall for gas collection.

6. The portable split-type greenhouse gas collection device according to claim 1, characterized in that, The separable housing (1) is equipped with a DC electric fan (1-1) to ensure uniform mixing of the gas inside the housing during the gas collection process.

7. The portable split-type greenhouse gas collection device according to claim 1, characterized in that, The upper part of the heightening ring (2) is provided with a first groove (2-1). After the first groove (2-1) is filled with water, the box can be sealed.

8. The portable split-type greenhouse gas collection device according to claim 1, characterized in that, The base (3) is made of stainless steel and consists of two parts: the upper part is a second groove (3-1) and the lower part is a single-layer wall that can be inserted into the soil. The second groove (3-1) can be sealed after being filled with water.

9. The portable split-type greenhouse gas collection device according to claim 1, characterized in that, The lower part of the base (3) has equidistant and equal diameter circular holes (3-2) on the side wall of the part inserted into the soil, so as to facilitate the lateral transport of water, soil microorganisms, nutrients, etc.

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