Precise collection device for greenhouse gas in rice field

Abstract

The utility model belongs to the technical field of rice field gas collection, and particularly relates to a rice field greenhouse gas accurate collecting device which comprises a base, a gas collecting device, a gas collecting device and a gas collecting device. The box body is embedded in the top of the base in a sealed mode, a partition plate is fixedly connected to the inner wall of the upper portion of the box body, the partition plate divides the box body into a storage bin located on the upper portion and a gas collecting bin located on the lower portion, and the gas collecting bin is used for collecting greenhouse gas generated in the rice field; heat insulation cotton is adhered to the inner wall and the outer wall of the gas collecting bin and is used for blocking solar radiation; the outer wall of the gas collecting bin communicates with a collecting structure, and the collecting structure is used for collecting greenhouse gas collected in the gas collecting bin. The application of the utility model is helpful for scientists and agricultural researchers to better understand the greenhouse gas emission mechanism in the rice planting process, and provides scientific basis for further optimizing the rice cultivation mode, reducing carbon footprint in agricultural production and developing low-carbon rice technology.

Description

Technical Field

[0001] The utility model belongs to the technical field of rice field gas collection, and particularly relates to a precise collection device for greenhouse gases in rice fields. Background Art

[0002] As an important greenhouse gas emission (abbreviation: carbon emission) source, the carbon emissions related to agricultural production activities account for about 14% of the total carbon emissions. Among them, paddy fields are one of the most important sources of CH4 and N2O emissions, accounting for about 15% and 11% of the total global agricultural production activities' CH4 and N2O emissions respectively. The greenhouse gas emissions from paddy fields have had a serious impact on climate change. In order to understand the role of paddy field ecosystems in global climate change, the research on the emissions of major greenhouse gases has become the focus of attention of many scholars and government departments.

[0003] It is crucial to carry out research on greenhouse gases in paddy fields, and collecting field gases is the first step in the research. Currently, the main methods for measuring greenhouse gases are micrometeorological method, chemical method and chamber method. The first two methods have not been popularized due to incomplete technology maturity and high cost. The gas collected by the existing gas collection device using the chamber method is not concentrated, and the device is exposed during gas collection. During the gas collection process, the temperature inside the device rises rapidly, which affects the emission of internal gases and causes collection errors. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a precise collection device for greenhouse gases in rice fields to solve the above problems.

[0005] To achieve the above purpose, the utility model provides the following scheme:

[0006] A precise collection device for greenhouse gases in rice fields, comprising:

[0007] A base, the top and bottom of the base are open, and it is used to cover rice;

[0008] A box body, the box body is hermetically embedded in the top of the base, a partition board is fixedly connected to the upper inner wall of the box body, and the partition board divides the box body into a storage bin located in the upper part and a gas collection bin located in the lower part. The gas collection bin is used to collect the greenhouse gases generated in the rice field;

[0009] Heat insulation cotton is bonded to the inner and outer walls of the gas collection bin to block solar radiation;

[0010] A collection structure is communicated with the outer wall of the gas collection bin, and the collection structure is used to collect the greenhouse gases collected inside the gas collection bin.

[0011] Preferably, the collection structure includes a plurality of sealed connectors communicated with the outer wall of the gas collection bin. The plurality of sealed connectors are evenly and equidistantly arranged along the height direction of the gas collection bin, so as to make the collected greenhouse gas more uniform.

[0012] One end of each of the plurality of sealed connectors away from the gas collection bin is communicated with a three-way valve. One of the interfaces of the three-way valve is communicated with a vacuum collection tube, and the vacuum collection tube is used for collecting the greenhouse gas collected inside the gas collection bin.

[0013] Preferably, the top end of the base protrudes inward to form a square frame structure. The bottom end of the gas collection bin is embedded inside the square frame structure. A gap is left between the square frame structure and the gas collection bin, and the gap is sealed with water.

[0014] Preferably, two fans are adhesively bonded to the inner wall of the gas collection bin for mixing the greenhouse gas. The two fans are distributed along the diagonal of the gas collection bin.

[0015] Preferably, a battery and a fan switch are installed on the inner side wall of the storage bin. The battery fan switch is electrically connected to the fan.

[0016] Preferably, a thermometer display screen is fixedly connected to the inner side wall of the storage bin. The thermometer display screen is electrically connected to a thermometer sensor through a probe wire, and the thermometer sensor is fixedly connected to the inner wall of the gas collection bin.

[0017] Preferably, two handles are symmetrically and fixedly connected to the outer wall of the gas collection bin for carrying the box body.

[0018] Compared with the prior art, the utility model has the following advantages and technical effects:

[0019] The gas collection bin in the utility model is specially used for collecting greenhouse gases generated in paddy fields, such as carbon dioxide, methane, etc. The design of the partition plate makes the gas collection more concentrated and pure, avoiding external interference and improving the collection accuracy. Through the collection structure, the greenhouse gas inside the gas collection bin can be effectively exported, which is convenient for quantitative and qualitative analysis using analytical instruments, thereby improving the data accuracy of the research on the paddy growth environment and its impact on greenhouse gas emissions. By adopting the heat insulation layer design, heat insulation cotton is adhered to both the inner and outer walls of the gas collection bin, which can effectively block the sharp rise in the temperature inside the gas collection bin caused by solar radiation and improve the accuracy of collecting greenhouse gases in the paddy field. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0021] Figure 1 It is a schematic structural diagram of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the base;

[0023] Among them, 1. Base; 1.1. Square frame structure; 2. Box body; 2.1. Handle; 2.2. Sealing joint; 2.3. Three-way valve; 2.4. Vacuum collection tube; 2.5. Storage bin; 2.6. Gas collection bin; 2.7. Fan; 2.8. Thermometer sensor; 2.9. Thermometer display screen; 2.10. Battery; 2.11. Fan switch; 2.12. Heat insulation cotton. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0026] Refer to Figures 1 to 2 As shown, the present invention discloses a precise greenhouse gas collection device for paddy fields, including:

[0027] Base 1, with the top and bottom of the base 1 open, for covering paddy rice;

[0028] Box body 2, the box body 2 is hermetically embedded in the top of the base 1. A partition board is fixedly connected to the upper inner wall of the box body 2. The partition board divides the box body 2 into a storage bin 2.5 located in the upper part and a gas collection bin 2.6 located in the lower part. The gas collection bin 2.6 is used to collect greenhouse gases generated in paddy fields;

[0029] The height of the upper inner storage bin 2.5 is 10 cm, and the length and width are smaller than those of the lower gas collection bin 2.6. The length of the gas collection bin 2.6 is 30 cm, and the width is 30 cm;

[0030] Heat insulation cotton 2.12 is bonded to the inner and outer walls of the gas collection bin 2.6 to block solar radiation.

[0031] A collection structure is connected to the outer wall of the gas collection bin 2.6, and the collection structure is used to collect the greenhouse gases collected inside the gas collection bin 2.6.

[0032] The base 1 is made of stainless steel, and the box body 2 is made of acrylic material. The box body 2 is a cuboid with an open bottom (length 30 cm, width 30 cm, height 120 cm), and the base 1 is a cube with open ends (length 34 cm, width 34 cm, height 34 cm).

[0033] In the present utility model, the gas collection bin 2.6 is specifically used for collecting greenhouse gases generated in paddy fields, such as carbon dioxide, methane, etc. The design of the partition plate makes the gas collection more concentrated and pure, avoiding external interference and improving the collection accuracy. Through the collection structure, the greenhouse gases inside the gas collection bin 2.6 can be effectively exported, facilitating quantitative and qualitative analysis using analytical instruments, thereby improving the data accuracy for studying the paddy growth environment and its impact on greenhouse gas emissions. By adopting the heat insulation layer design, heat insulation cotton 2.12 is adhered to both the inner and outer walls of the gas collection bin 2.6, which can effectively block the sharp increase in temperature inside the gas collection bin 2.6 caused by solar radiation and improve the accuracy of collecting paddy field greenhouse gases.

[0034] In a further optimized solution, the collection structure includes a plurality of sealing joints 2.2 connected to the outer wall of the gas collection bin 2.6. The plurality of sealing joints 2.2 are evenly and equally spaced along the height direction of the gas collection bin 2.6, which is used to make the collected greenhouse gases more uniform.

[0035] One end of the plurality of sealing joints 2.2 away from the gas collection bin 2.6 is connected to a three-way valve 2.3. One of the interfaces of the three-way valve 2.3 is connected to a vacuum collection tube 2.4, and the vacuum collection tube 2.4 is used to collect the greenhouse gases collected inside the gas collection bin 2.6.

[0036] Sealing joints 2.2 communicating with the inside of the gas collection bin 2.6 are provided at the upper part (30 cm away from the top of the gas collection bin 2.6), the middle part (60 cm away from the top of the gas collection bin 2.6), and the lower part (90 cm away from the top of the gas collection bin 2.6) of the outer wall of the box body 2, which is beneficial to collecting the uniform greenhouse gases inside the gas collection bin 2.6.

[0037] For a further optimized solution, the top end of the base 1 bulges inward to form a square frame structure 1.1, the bottom end of the gas collection chamber B6 is embedded inside the inner side of the square frame structure 1.1, and there is a gap between the square frame structure 1.1 and the gas collection chamber 2.6, and the gap is sealed with water. The width of the square frame structure 1.1 is 3 cm and the depth is 3 cm.

[0038] For a further optimized solution, two fans 2.7 are adhesively attached to the inner wall of the gas collection chamber 2.6 for mixing greenhouse gases. The two fans 2.7 are distributed along the diagonal of the gas collection chamber 2.6. The fan 2.7 located at the top of the gas collection chamber 2.6 is 25 cm away from the top wall of the gas collection chamber 2.6, and the fan 2.7 located at the bottom of the gas collection chamber 2.6 is 25 cm away from the bottom wall of the gas collection chamber 2.6.

[0039] Two fans 2.7 are arranged diagonally in the gas collection chamber 2.6 to mix the gas. Arranging the two fans 2.7 diagonally can achieve a better gas mixing effect.

[0040] For a further optimized solution, a battery 2.10 and a fan switch 2.11 are installed on the inner side wall of the storage chamber 2.5, and the battery 2.10 and the fan switch 2.11 are electrically connected to the fan 2.7.

[0041] For a further optimized solution, a thermometer display screen 2.9 is fixedly connected to the inner side wall of the storage chamber 2.5. The thermometer display screen 2.9 is electrically connected to a thermometer sensor 2.8 through a probe wire, and the thermometer sensor 2.8 is fixedly connected to the inner wall of the gas collection chamber 2.6.

[0042] The thermometer display screen 2.9 is used to display the temperature inside the gas collection chamber 2.6.

[0043] For a further optimized solution, two handles 2.1 are symmetrically and fixedly connected to the outer wall of the gas collection chamber 2.6 for carrying the box body 2.

[0044] The working process of the present utility model is as follows: First, insert the base 1 into the paddy field soil, then embed the box body 2 into the square frame structure 1.1 on the base 1, and add water into the square frame structure 1.1 of the base 2 to keep the inside of the box body 2 airtight. After the box body 2 has collected greenhouse gases for a certain period of time, use the vacuum collection tube 2.4 to collect the greenhouse gases inside the box body 2. First, open the three-way valve 2.3 at the front end of the vacuum collection tube 2.4 to make the vacuum collection tube 2.4 communicate with the box body 2, and use the vacuum collection tube 2.4 to repeat the inhalation and inflation actions more than 5 times to make the gas inside the box body 2 uniform and the air pressure stable. Then, collect the greenhouse gases inside the box body 2 through the vacuum collection tube 2.4. When enough greenhouse gases are collected, adjust the three-way valve 2.3 to make the vacuum collection tube 2.4 communicate with the collection bottle that has been evacuated. After the gas in the vacuum collection tube 2.4 is transferred into the collection bottle, close the three-way valve 2.3 for the next collection. If the collection stage is over, remove the box body 2 from the base 1 to avoid affecting the growth of rice in the base 1.

[0045] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0046] The above-described embodiments are only used to describe the preferred mode of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present utility model should all fall within the protection scope determined by the claims of the present utility model.

Claims

1. A precise collection device for greenhouse gases in paddy fields, characterized in that, Comprising: A base (1), with the top and bottom of the base (1) being open, for covering rice plants. A box body (2), which is hermetically embedded at the top of the base (1). A partition board is fixedly connected to the upper inner wall of the box body (2), and the partition board divides the box body (2) into a storage bin (2.5) located in the upper part and a gas collection bin (2.6) located in the lower part. The gas collection bin (2.6) is used for collecting greenhouse gases generated in the paddy field of the rice plants. Heat insulation cotton (2.12) is bonded to the inner and outer walls of the gas collection bin (2.6) to block solar radiation. A collection structure is communicated with the outer wall of the gas collection bin (2.6), and the collection structure is used for collecting the greenhouse gases collected inside the gas collection bin (2.6).

2. The precise collection device for greenhouse gases in paddy fields according to claim 1, characterized in that: The collection structure includes a plurality of sealed joints (2.2) communicated with the outer wall of the gas collection bin (2.6). The plurality of sealed joints (2.2) are evenly and equally spaced along the height direction of the gas collection bin (2.6), so as to make the collected greenhouse gases more uniform. One end of each of the plurality of sealed joints (2.2) far from the gas collection bin (2.6) is communicated with a three-way valve (2.3). One of the interfaces of the three-way valve (2.3) is communicated with a vacuum collection tube (2.4), and the vacuum collection tube (2.4) is used for collecting the greenhouse gases collected inside the gas collection bin (2.6).

3. The precise collection device for greenhouse gases in paddy fields according to claim 1, wherein: The top end of the base (1) protrudes inwards to form a zigzag structure (1.1). The bottom end of the gas collection bin (2.6) is embedded inside the zigzag structure (1.1). A gap is left between the zigzag structure (1.1) and the gas collection bin (2.6), and the gap is sealed with water.

4. The precise collection device for greenhouse gases in paddy fields according to claim 1, characterized in that: Two fans (2.7) are bonded to the inner wall of the gas collection bin (2.6) to mix the greenhouse gases evenly. The two fans (2.7) are distributed along the diagonal of the gas collection bin (2.6).

5. The precise collection device for greenhouse gases in paddy fields according to claim 4, characterized in that: A battery (2.10) and a fan switch (2.11) are installed on the side wall inside the storage bin (2.5). The battery (2.10) and the fan switch (2.11) are electrically connected to the fans (2.7).

6. The precise collection device for greenhouse gases in paddy fields according to claim 1, characterized in that: A thermometer display screen (2.9) is fixedly connected to the side wall inside the storage bin (2.5). The thermometer display screen (2.9) is electrically connected to a thermometer sensor (2.8) through a probe wire, and the thermometer sensor (2.8) is fixedly connected to the inner wall of the gas collection bin (2.6).

7. The precise collection device for greenhouse gases in paddy fields according to claim 1, characterized in that: Two handles (2.1) are symmetrically and fixedly connected to the outer wall of the gas collection bin (2.6) for carrying the box body (2).

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