A sampling device for measuring greenhouse gas emissions in wetlands
By designing a sampling device that includes a power component, an installation component, and a collection component, the challenge of greenhouse gas sampling in wetlands was solved, enabling efficient collection and measurement of greenhouse gases with reduced external influences, thus improving the accuracy of the research.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INST OF WATER RESOURCES FOR PASTERAL AREA MINIST OF WATER RESOURCES P R C
- Filing Date
- 2023-06-29
- Publication Date
- 2026-05-12
Smart Images
Figure CN116718436B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of greenhouse gas emission sampling equipment, and more specifically, to a sampling device for measuring greenhouse gas emissions in wetlands. Background Technology
[0002] In recent years, under the influence of various factors such as global climate change, excessive water resource development, excessive land reclamation, and overgrazing of grasslands, the degradation of desert grassland ecosystems has become increasingly serious, leading to a series of ecological and environmental problems such as river flow interruption and wetland degradation in most rivers in grassland areas. This, in turn, has triggered a spatiotemporal imbalance in the carbon cycle of rivers and wetlands driven by multiple factors.
[0003] The hydrological environment of riparian wetlands in inland rivers varies significantly, but current research lacks on the spatiotemporal distribution and impact mechanisms of CO2 and CH4 emissions, especially on intermittent riparian wetlands in inland rivers.
[0004] Currently, there is a lack of equipment that can excavate a cylindrical soil column, surround it with a cover, and then sample CO2 and CH4 emissions. Summary of the Invention
[0005] The technical problem to be solved by the present invention is to provide a sampling device for measuring greenhouse gas emissions in wetlands, which facilitates the collection of greenhouse gas emission samples.
[0006] The present invention achieves its objective by employing the following technical solution:
[0007] A sampling device for measuring greenhouse gas emissions in wetlands includes a power assembly, characterized in that: the power assembly includes a motor, the output shaft of which is fixedly connected to an L-shaped rod, the round part of which is disposed in a straight groove of a connecting rod, and both ends of the connecting rod are respectively provided with straight grooves; symmetrical round blocks are respectively disposed in the straight grooves, symmetrical round blocks are respectively fixedly connected to cross blocks, symmetrical cross blocks are respectively fixedly connected to hollow rods, symmetrical hollow rods are respectively disposed in the hollow rods, symmetrical vertical rods are respectively rotatably connected to U-shaped rods; symmetrical U-shaped rods are respectively fixedly connected to loop blocks, symmetrical loop blocks are respectively fixedly connected to soil-breaking components; the soil-breaking component includes symmetrical first mounting plates, symmetrical first mounting plates are respectively fixedly connected to a set of connecting rods, each connecting rod is respectively fixedly connected to a second mounting plate, symmetrical second mounting plates are respectively fixedly connected to soil-breaking plates, the vertical side chamfers of the two soil-breaking plates are in opposite directions, and one soil-breaking plate is fixedly connected to a set of evenly distributed scraping blades, the set of scraping blades decreasing in length from top to bottom.
[0008] As a further limitation of this technical solution, it also includes an installation component, which includes a first L-plate, a ring fixedly connected to the first L-plate, a rotating component fixedly connected to the first L-plate, a rotating motor, a rotating motor fixedly connected to the first L-plate, a gear fixedly connected to the first L-plate, a gear ring connected to the ring bearing, the gear meshing with the gear ring, a connecting plate fixedly connected to the connecting plate, a vertical plate fixedly connected to the vertical plate, a second L-plate fixedly connected to the vertical plate, the vertical plate having symmetrical cross grooves, and two sets of symmetrical horizontal bars fixedly connected to the vertical plate, each horizontal bar being fixedly connected to an arc rod.
[0009] As a further limitation of this technical solution, the connecting rod is rotatably connected to the second L-plate, the motor is fixedly connected to the vertical plate, the output shaft of the motor passes through the vertical plate, the symmetrical cross blocks are respectively set in the corresponding cross grooves, and the symmetrical arc rods pass through the corresponding spiral blocks.
[0010] As a further limitation of this technical solution, the ring is fixedly connected to the collection assembly, the collection assembly includes a bracket, the ring is fixedly connected to the bracket, the bracket is fixedly connected to an electric push rod, the push rod end of the electric push rod is fixedly connected to a cover, and the cover is fixedly connected to an exhaust pipe.
[0011] As a further limitation of this technical solution, the connecting rod is fixedly connected to the leveling assembly, the leveling assembly includes symmetrical connecting long rods, the connecting rod is fixedly connected to the symmetrical connecting long rods, the symmetrical connecting long rods are respectively fixedly connected to the mounting rods, and the symmetrical mounting rods are respectively fixedly connected to a group of evenly distributed leveling plates.
[0012] As a further limitation of this technical solution, the cover and the exhaust pipe are made of waterproof, lightproof and airtight materials.
[0013] As a further limitation of this technical solution, the soil-breaking plate and the soil-scraping blade are made of stainless steel.
[0014] As a further limitation of this technical solution, each of the soil scraping blades is fixedly connected to a pressure sensor. When the pressure sensor senses that the soil resistance is too great, it controls the rotary motor to rotate back and forth, breaking the soil at that point for a longer period of time. When the resistance is less, it continues to rotate in a circular motion.
[0015] A sampling method for a sampling device used to measure greenhouse gas emissions in wetlands, characterized by comprising the following steps:
[0016] S1: The first L plate is mounted onto the moving mechanism, and the moving mechanism moves along the height direction;
[0017] S2: While controlling the moving mechanism to move downward, control the rotary motor and the rotation of the motor;
[0018] S3: The shorter bottom scraping blade makes contact first, resulting in less resistance. As it descends, the longer blades make contact, and so on. When the next blade contacts the soil, a portion of it has already been broken by the next layer of soil-breaking blades, which can effectively reduce resistance. At the same time, the soil-breaking blades will move alternately with the power component, which is not a simple scraping, but a certain degree of buffering.
[0019] S4: The chamfers on the vertical sides of the two soil-breaking plates face opposite directions. Combined with the staggered movement of the two plates driven by the power component, they swing along the arc direction, minimizing the resistance of the swinging soil breaking. The soil breaking alternately cuts on both sides, resulting in much greater resistance than when there is only one soil-breaking plate. The cutting blade tips are all at the center of the soil breaking, and the chamfers on both sides face opposite directions. The alternating pressure is better than simply cutting directly in one direction.
[0020] S5: A cylindrical soil column is excavated by means of the rotary motor, the soil breaking plate, and the soil scraping blade.
[0021] S6: Control the electric push rod to extend, so that the cover ring surrounds the soil column, connect the exhaust pipe to the gas collection mechanism, such as an air bag, collect the gas for a period of time, seal and remove it, and check the discharge volume.
[0022] As a further limitation of this technical solution, when the motor rotates, it drives the L-shaped rod to swing back and forth while its round rod swings along the straight groove. The L-shaped rod drives the connecting rod to swing back and forth. The connecting rod drives the long rod, the mounting rod, and the flat plate to swing back and forth. The connecting rod drives the round block to move back and forth along the straight groove. The round block drives the cross block to move back and forth along the cross groove. The cross block drives the hollow rod to move back and forth. The hollow rod drives the vertical rod to move back and forth. The vertical rod drives the U-shaped rod to move back and forth. The U-shaped rod drives the loop block to move back and forth along the arc rod. The loop block drives the U-shaped rod to swing back and forth. The U-shaped rod drives the vertical rod to move back and forth along the hollow rod. The loop block drives the first mounting plate, the connecting rod, the second mounting plate, the soil breaking plate, and the soil scraping blade to swing back and forth.
[0023] Compared with the prior art, the advantages and positive effects of the present invention are:
[0024] 1. This device controls a rotary motor and its rotation. The shorter scraping blade at the bottom contacts the soil first, resulting in less resistance. As it descends, the longer blades make contact, and so on. By the time the next blade contacts the soil, a portion of it has already been broken by the next layer of blades, effectively reducing resistance. Simultaneously, the blades move alternately with the power assembly, not simply scraping, thus providing a degree of buffering. The chamfered edges of the two breaking plates face opposite directions. Combined with the staggered movement of the two plates driven by the power assembly, they swing along the arc direction, minimizing the resistance of the swinging soil breaking. The alternating cutting on both sides results in significantly less resistance than a single breaking plate. The cutting blade tips are all at the center of the soil breaking, and the opposite chamfered edges provide alternating pressure compared to a simple unidirectional cut.
[0025] 2. This device is equipped with a cover and an exhaust pipe, both made of waterproof, lightproof, and airtight materials, which reduces the impact of the external environment on the emission of soil temperature and humidity gases and facilitates subsequent gas collection.
[0026] 3. This device is equipped with a leveling component, which causes the leveling plate to swing back and forth during its revolution, contacting the soil excavated by the scraper blade and the soil breaking plate, leveling it, and preventing soil collapse from impacting the soil column and causing adverse effects on the measurement. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .
[0028] Figure 2 This is a partial three-dimensional structural diagram of the present invention. Figure 2 .
[0029] Figure 3 This is a partial three-dimensional structural diagram of the present invention. Figure 1 .
[0030] Figure 4 This is a partial three-dimensional structural diagram of the present invention. Figure 2 .
[0031] Figure 5 This is a partial three-dimensional structural diagram of the present invention. Figure 3 .
[0032] Figure 6 This is a partial three-dimensional structural diagram of the present invention. Figure 4 .
[0033] Figure 7 This is a partial three-dimensional structural diagram of the present invention. Figure 5 .
[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 .
[0035] In the picture:
[0036] 1. Install components; 11. First L-plate; 12. Circular ring;
[0037] 2. Rotating assembly; 21. Gear ring; 22. Gear; 23. Rotary motor; 24. Connecting plate; 25. Vertical plate; 26. Second L-plate; 27. Cross groove; 28. Horizontal bar; 29. Arc bar.
[0038] 3. Collection components; 31. Exhaust pipe; 32. Electric push rod; 33. Bracket; 34. Cover.
[0039] 4. Leveling components; 41. Long rod; 42. Mounting rod; 43. Leveling plate;
[0040] 5. Soil-breaking component; 51. First mounting plate; 52. Connecting rod; 53. Second mounting plate; 54. Soil-breaking plate; 55. Soil scraper blade; 56. Pressure sensor.
[0041] 6. Power components; 61. Motor; 62. Connecting rod; 63. Straight groove; 64. Straight groove; 65. Round block; 66. L-shaped rod; 67. Cross block; 68. U-shaped block; 69. U-shaped rod; 610. Vertical rod; 611. Hollow rod. Detailed Implementation
[0042] The following detailed description of a specific embodiment of the present invention is provided in conjunction with the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.
[0043] Example 1: The present invention includes a power assembly 6, which includes a motor 61. The output shaft of the motor 61 is fixedly connected to an L-shaped rod 66. The round part of the L-shaped rod 66 is disposed in a straight groove 64 of a connecting rod 62. Straight grooves 63 are respectively disposed at both ends of the connecting rod 62. Circular blocks 65 are respectively disposed in the symmetrical straight grooves 63. Cross blocks 67 are respectively fixedly connected to the symmetrical circular blocks 65. Hollow rods 611 are respectively fixedly connected to the symmetrical cross blocks 67. Vertical rods 610 are respectively disposed in the symmetrical hollow rods 611. U-shaped rods 610 are respectively rotatably connected to the symmetrical hollow rods 611. 9; The symmetrical U-shaped rods 69 are respectively fixedly connected to the spiral blocks 68, and the symmetrical spiral blocks 68 are respectively fixedly connected to the soil breaking components 5; The soil breaking components 5 include symmetrical first mounting plates 51, the symmetrical first mounting plates 51 are respectively fixedly connected to a set of connecting rods 52, each of the connecting rods 52 is respectively fixedly connected to a second mounting plate 53, the symmetrical second mounting plates 53 are respectively fixedly connected to soil breaking plates 54, the chamfer directions of the vertical sides of the two soil breaking plates 54 are opposite, and one soil breaking plate 54 is fixedly connected to a set of evenly distributed scraping blades 55, the set of scraping blades 55 becoming shorter from top to bottom.
[0044] It also includes an installation component 1, which includes a first L-plate 11, a ring 12 fixedly connected to the first L-plate 11, and a rotating component 2 fixedly connected to the first L-plate 11. The rotating component 2 includes a rotary motor 23, which is fixedly connected to the first L-plate 11. The output shaft of the rotary motor 23 passes through the first L-plate 11 and is fixedly connected to a gear 22. The ring 12 is bearing-connected to a gear ring 21, and the gear 22 meshes with the gear ring 21. The gear ring 21 is fixedly connected to a connecting plate 24, and the connecting plate 24 is fixedly connected to a vertical plate 25. The vertical plate 25 is fixedly connected to a second L-plate 26. The vertical plate 25 is provided with symmetrical cross grooves 27 and is fixedly connected to two sets of symmetrical crossbars 28. Each crossbar 28 is fixedly connected to an arc rod 29.
[0045] The connecting rod 62 is rotatably connected to the second L plate 26, the motor 61 is fixedly connected to the vertical plate 25, the output shaft of the motor 61 passes through the vertical plate 25, the symmetrical cross blocks 67 are respectively set in the corresponding cross grooves 27, and the symmetrical arc rods 29 pass through the corresponding loop blocks 68.
[0046] The ring 12 is fixedly connected to the collection assembly 3. The collection assembly 3 includes a bracket 33. The ring 12 is fixedly connected to the bracket 33. The bracket 33 is fixedly connected to the electric push rod 32. The push rod end of the electric push rod 32 is fixedly connected to the cover 34. The cover 34 is fixedly connected to the exhaust pipe 31.
[0047] The cover 34 and the exhaust pipe 31 are made of waterproof, lightproof and airtight materials.
[0048] The soil-breaking plate 54 and the soil-scraping blade 55 are made of stainless steel.
[0049] When the rotary motor 23 rotates, it drives the gear 22 to rotate, the gear 22 drives the gear ring 21 to rotate, the gear ring 21 drives the connecting plate 24, the vertical plate 25, the second L plate 26, the horizontal bar 28 and the arc bar 29 to rotate, and the connecting plate 24 and the others drive the leveling component 4, the soil breaking component 5 and the power component 6 to revolve around the center of the ring 12.
[0050] When the motor 61 rotates, it drives the L-shaped rod 66 to swing back and forth, while its round rod swings along the straight groove 64. The L-shaped rod 66 drives the connecting rod 62 to swing back and forth, the connecting rod 62 drives the round block 65 to move back and forth along the straight groove 63, the round block 65 drives the cross block 67 to move back and forth along the cross groove 27, the cross block 67 drives the hollow rod 611 to move back and forth, and the hollow rod 611 drives the vertical rod 610 to move back and forth. The vertical rod 610 drives the U-shaped rod 69 to move back and forth, the U-shaped rod 69 drives the loop block 68 to move back and forth along the arc rod 29, the loop block 68 drives the U-shaped rod 69 to swing back and forth, the U-shaped rod 69 drives the vertical rod 610 to move back and forth along the hollow rod 611, and the loop block 68 drives the first mounting plate 51, the connecting rod 52, the second mounting plate 53, the soil breaking plate 54 and the soil scraping blade 55 to swing back and forth.
[0051] Example 2: This example is a further elaboration based on Example 1. The connecting rod 62 is fixedly connected to the leveling component 4. The leveling component 4 includes symmetrical connecting rods 41. The connecting rod 62 is fixedly connected to the symmetrical connecting rods 41. The symmetrical connecting rods 41 are respectively fixedly connected to the mounting rods 42. The symmetrical mounting rods 42 are respectively fixedly connected to a group of evenly distributed leveling plates 43.
[0052] When the rotary motor 23 rotates, it drives the gear 22 to rotate, the gear 22 drives the gear ring 21 to rotate, the gear ring 21 drives the connecting plate 24, the vertical plate 25, the second L plate 26, the horizontal bar 28 and the arc bar 29 to rotate, and the connecting plate 24 and the others drive the leveling component 4, the soil breaking component 5 and the power component 6 to revolve around the center of the ring 12.
[0053] When the motor 61 rotates, it drives the L-shaped rod 66 to swing back and forth, while its round rod swings along the straight groove 64. The L-shaped rod 66 drives the connecting rod 62 to swing back and forth. The connecting rod 62 drives the long rod 41, the mounting rod 42, and the flat plate 43 to swing back and forth. The connecting rod 62 drives the round block 65 to move back and forth along the straight groove 63. The round block 65 drives the cross block 67 to move back and forth along the cross groove 27. The cross block 67 drives the hollow rod 611 to move back and forth. The rod 611 drives the vertical rod 610 to move back and forth, the vertical rod 610 drives the U-shaped rod 69 to move back and forth, the U-shaped rod 69 drives the loop block 68 to move back and forth along the arc rod 29, the loop block 68 drives the U-shaped rod 69 to swing back and forth, the U-shaped rod 69 drives the vertical rod 610 to move back and forth along the hollow rod 611, and the loop block 68 drives the first mounting plate 51, the connecting rod 52, the second mounting plate 53, the soil breaking plate 54 and the soil scraping blade 55 to swing back and forth.
[0054] Example 3: This example is a further elaboration based on Example 1 or 2. Each of the scraper blades 55 is fixedly connected to a pressure sensor 56. When the pressure sensor 56 senses that the soil resistance is too great, it controls the rotary motor 23 to rotate back and forth, breaking the soil at that point for a longer period of time. When the resistance is less, it continues to rotate in a circular motion.
[0055] A sampling method for a sampling device used to measure greenhouse gas emissions in wetlands, characterized by comprising the following steps:
[0056] S1: The first L plate 11 is mounted onto the moving mechanism, and the moving mechanism moves along the height direction;
[0057] S2: While controlling the moving mechanism to move downward, control the rotary motor 23 and the motor 61 to rotate;
[0058] When the motor 61 rotates, it drives the L-shaped rod 66 to swing back and forth, while its round rod swings along the straight groove 64. The L-shaped rod 66 drives the connecting rod 62 to swing back and forth. The connecting rod 62 drives the long rod 41, the mounting rod 42, and the flat plate 43 to swing back and forth. The connecting rod 62 drives the round block 65 to move back and forth along the straight groove 63. The round block 65 drives the cross block 67 to move back and forth along the cross groove 27. The cross block 67 drives the hollow rod 611 to move back and forth. The rod 611 drives the vertical rod 610 to move back and forth, the vertical rod 610 drives the U-shaped rod 69 to move back and forth, the U-shaped rod 69 drives the loop block 68 to move back and forth along the arc rod 29, the loop block 68 drives the U-shaped rod 69 to swing back and forth, the U-shaped rod 69 drives the vertical rod 610 to move back and forth along the hollow rod 611, and the loop block 68 drives the first mounting plate 51, the connecting rod 52, the second mounting plate 53, the soil breaking plate 54 and the soil scraping blade 55 to swing back and forth.
[0059] When the rotary motor 23 rotates, it drives the gear 22 to rotate, the gear 22 drives the gear ring 21 to rotate, the gear ring 21 drives the connecting plate 24, the vertical plate 25, the second L plate 26, the horizontal bar 28 and the arc bar 29 to rotate, and the connecting plate 24 and the others drive the leveling component 4, the soil breaking component 5 and the power component 6 to revolve around the center of the ring 12.
[0060] S3: The shorter bottom scraping blade 55 makes contact first, resulting in less resistance. As it descends, the longer blades make contact, and then even longer contact. When the next blade contacts the soil, a portion of it has already been broken by the next layer of soil-breaking blades, which can effectively reduce resistance. At the same time, the soil-breaking blades will move alternately with the power component 6, which is not a simple scraping, but a certain degree of buffering.
[0061] S4: The chamfered directions of the vertical sides of the two soil-breaking plates 54 are opposite. Combined with the staggered movement of the two plates driven by the power component 6, they swing along the direction of the arc rod 29, minimizing the resistance of the swinging soil breaking. The soil breaking alternately cuts on both sides, and the resistance is much greater than that of a single soil-breaking plate 54. The cutting blade tips are all at the center position of the soil breaking. The chamfered directions of the two sides are opposite. The alternating pressure is better than simply cutting directly in one direction.
[0062] S5: Driven by the rotary motor 23, the soil breaking plate 54, and the soil scraping blade 55, a cylindrical soil column is excavated.
[0063] S6: Control the electric push rod 32 to extend, so that the cover 34 surrounds the soil column, connects the exhaust pipe to the gas collection mechanism, such as an air bag, collects gas for a period of time, seals and removes it, and performs a test on the discharge volume.
[0064] This device controls the rotation of the rotary motor 23 and the motor 61. The shorter scraping blade 55 at the bottom contacts the soil first, resulting in less resistance. As it descends, the longer blades make contact, and so on. By the time the next blade contacts the soil, a portion of it has already been broken by the next layer of blades, effectively reducing resistance. Simultaneously, the blades move alternately with the power component 6, not simply scraping, thus providing a degree of buffering. The two cutting plates 54 have opposite chamfered edges on their vertical sides. Combined with the staggered movement of the two plates driven by the power component 6, they swing along the arc 29, minimizing the resistance of the oscillating soil breaking. The alternating cutting on both sides results in significantly less resistance than a single cutting plate 54. The cutting blade tips are all at the center of the soil breaking, and the opposite chamfered edges provide alternating pressure compared to a simple unidirectional cut.
[0065] This device incorporates a cover 34 and an exhaust pipe 31, both made of waterproof, lightproof, and airtight materials, to reduce the impact of the external environment on soil temperature and humidity gas emissions and facilitate subsequent gas collection.
[0066] This device uses a leveling component 4 to make the leveling plate 43 swing back and forth during its revolution, contacting the soil excavated by the scraping blade 55 and the soil breaking plate 54, leveling it, and preventing soil collapse from impacting the soil column and causing adverse effects on the measurement.
[0067] The above-disclosed embodiments are merely specific examples of the present invention. However, the present invention is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A sampling device for measuring greenhouse gas emissions in wetlands, comprising a power unit (6), characterized in that: The power assembly (6) includes a motor (61), the output shaft of which is fixedly connected to an L-shaped rod (66), the round rod of which is set in the straight groove (64) of the connecting rod (62), and the two ends of the connecting rod (62) are respectively provided with straight grooves (63). Circular blocks (65) are respectively provided in the symmetrical straight grooves (63), and cross blocks (67) are respectively fixedly connected to the symmetrical circular blocks (65). Hollow rods (611) are respectively fixedly connected to the symmetrical cross blocks (67). Vertical rods (610) are respectively provided in the symmetrical hollow rods (611), and U-shaped rods (69) are respectively rotatably connected to the symmetrical vertical rods (610). The symmetrical U-shaped rods (69) are respectively fixedly connected to the spiral blocks (68), and the symmetrical spiral blocks (68) are respectively fixedly connected to the soil breaking components (5). The soil breaking component (5) includes a symmetrical first mounting plate (51), which is fixedly connected to a set of connecting rods (52). Each connecting rod (52) is fixedly connected to a second mounting plate (53). The symmetrical second mounting plates (53) are fixedly connected to soil breaking plates (54). The vertical side chamfers of the two soil breaking plates (54) are opposite. One soil breaking plate (54) is fixedly connected to a set of evenly distributed scraping blades (55). The set of scraping blades (55) becomes shorter from top to bottom. It also includes an installation component (1), which includes a first L-plate (11), which is fixedly connected to a ring (12). The first L-plate (11) is fixedly connected to a rotating component (2), which includes a rotating motor (23). The first L-plate (11) is fixedly connected to the rotating motor (23). The output shaft of the rotating motor (23) passes through the first L-plate (11) and is fixedly connected to a gear (22). The ring (12) is connected to a gear ring (21) by a bearing. The gear (22) meshes with the gear ring (21). The gear ring (21) is fixedly connected to a connecting plate (24). The connecting plate (24) is fixedly connected to a vertical plate (25). The vertical plate (25) is fixedly connected to a second L-plate (26). The vertical plate (25) is provided with symmetrical cross grooves (27). The vertical plate (25) is fixedly connected to two sets of symmetrical crossbars (28). Each crossbar (28) is fixedly connected to an arc rod (29). The connecting rod (62) is rotatably connected to the second L plate (26), the motor (61) is fixedly connected to the vertical plate (25), the output shaft of the motor (61) passes through the vertical plate (25), the symmetrical cross blocks (67) are respectively set in the corresponding cross grooves (27), and the symmetrical arc rods (29) pass through the corresponding spiral blocks (68). The ring (12) is fixedly connected to the collection assembly (3), the collection assembly (3) includes a bracket (33), the ring (12) is fixedly connected to the bracket (33), the bracket (33) is fixedly connected to the electric push rod (32), the push rod end of the electric push rod (32) is fixedly connected to the cover (34), and the cover (34) is fixedly connected to the exhaust pipe (31). The connecting rod (62) is fixedly connected to the leveling component (4). The leveling component (4) includes symmetrical connecting rods (41). The connecting rod (62) is fixedly connected to the symmetrical connecting rods (41). The symmetrical connecting rods (41) are respectively fixedly connected to the mounting rods (42). The symmetrical mounting rods (42) are respectively fixedly connected to a group of evenly distributed leveling plates (43).
2. The sampling device for measuring greenhouse gas emissions in wetlands according to claim 1, characterized in that: The cover (34) and the exhaust pipe (31) are made of waterproof, lightproof and airtight materials.
3. The sampling device for measuring greenhouse gas emissions in wetlands according to claim 1, characterized in that: The soil-breaking plate (54) and the soil-scraping blade (55) are made of stainless steel.
4. The sampling device for measuring greenhouse gas emissions in wetlands according to claim 1, characterized in that: Each of the scraper blades (55) is fixedly connected to a pressure sensor (56). When the pressure sensor (56) senses that the soil resistance is too great, it controls the rotary motor (23) to rotate back and forth, breaking the soil at that location for a longer period of time. When the resistance is less, it continues to rotate in a circular motion.
5. The sampling method of the sampling device for measuring greenhouse gas emissions in wetlands according to claim 1, characterized in that, Includes the following steps: S1: The first L plate (11) is installed on the moving mechanism, and the moving mechanism moves along the height direction; S2: While controlling the moving mechanism to move downward, control the rotary motor (23) and the motor (61) to rotate; S3: The shorter scraper blade (55) at the bottom makes contact first, with less resistance. As it descends, the longer scraper blade (55) makes contact, and then the even longer scraper blade (55) makes contact. When the next scraper blade (55) contacts the soil, a part of it has already been broken by the next layer of scraper blades (55), which can greatly reduce resistance. At the same time, the scraper blade (55) will follow the alternating movement of the power component (6), which is not a simple scraping, but a certain buffering is achieved. S4: The vertical side chamfers of the two breaking plates (54) face opposite directions. Combined with the staggered movement of the two plates driven by the power component (6), they swing along the direction of the arc rod (29), reducing the resistance of the swing breaking to the minimum. The breaking of soil is alternately cut on both sides, and the resistance is much smaller than that of a single breaking plate (54). The cutting blades are all at the center of the breaking of soil, and the chamfers on both sides face opposite directions. The alternating pressure is smaller than that of a simple one-way direct cut. S5: A cylindrical soil column is excavated by the rotary motor (23), the soil breaking plate (54) and the soil scraping blade (55). S6: Control the electric push rod (32) to extend, so that the cover (34) surrounds the soil column, connects the exhaust pipe to the gas collection mechanism, collects the gas for a period of time, seals and removes it, and performs a test on the discharge volume.