An under-ice layered gas collection device and method

Abstract

This invention discloses an under-ice stratified gas collection device and method, relating to the field of gas collection devices. The invention includes a gas collection box, a gas collection assembly, and a gas outlet assembly; a rotating adjustment part and a rotating switch part are provided on the connecting pipe; a rotating inlet pipe is movably arranged inside the gas collection box; a transmission part connects the rotating inlet pipe and the rotating adjustment part respectively; after the gas in the gas collection box is half-output, it continues to drive the rotating inlet pipe to rotate; the rotating inlet pipe drives a rotating joint to rotate via the transmission part; the rotating joint drives a movable adjusting plate in the regulator to rotate, causing the movable adjusting plate to overlap with the connecting port of the fixed adjusting plate; the speed at which the second transfer box enters the gas collection box is adjusted by the angle of overlap; by adjusting the inlet speed of the rotating inlet pipe, the switch for opening the second transfer box to enter the gas collection box is automatically adjusted, and the gas delivery speed of the second transfer box entering the gas collection box is also adjusted to ensure that the output speeds of each stage are matched.

Description

Technical Field

[0001] This invention relates to the field of gas collection devices, and in particular to a sub-ice stratified gas collection device and method. Background Technology

[0002] Because lakes in cold regions are frozen for a period of time, the generation, accumulation and release of gases under the ice have a significant impact on regional carbon emissions and the greenhouse effect. The presence of ice sheets blocks the direct exchange of gases with the atmosphere, causing greenhouse gases such as CO2 and CH4 in the water to accumulate in large quantities under the ice.

[0003] Existing sub-ice gas collection devices collect gas by using an inverted funnel. After breaking the ice surface, the device is placed under the ice to collect the gas.

[0004] However, existing sub-ice stratified gas collection devices have the following problems during use: When using the inverted funnel method for gas collection, it is difficult to avoid gas escape, and it is impossible to effectively distinguish and continuously enrich the gas escaping from different water levels. During the gas collection process, it is impossible to adapt the internal gas collection rate according to the gas collection rate of different levels. During gas collection, the gases tend to mix easily when entering the gas collection device, and the connection between different gas output levels is poor, which can easily lead to changes in the collected concentration. Summary of the Invention

[0005] The purpose of this invention is to provide a sub-ice stratified gas collection device and method, and to provide a gas collection device with matching collection speed and collection concentration standards.

[0006] This invention is a sub-ice stratified gas collection device, comprising a gas collection box, a gas collection assembly, and a gas outlet assembly; The gas collection assembly includes a gas collection section and a gas delivery section; the gas delivery section includes a first transfer box, a second transfer box, and a connecting pipe. The first transfer box is installed at the bottom of the gas collection box, the second transfer box is installed below the first transfer box, and the connecting pipe connects the second transfer box and the gas collection box and passes through the first transfer box; the gas collection section includes a first funnel, a second funnel, a third funnel, a fourth funnel, and a fifth funnel, a first gas collection pipe, and a second gas collection pipe. The first funnel and the second funnel are arranged parallel to each other and have a gap between them. The third funnel is located above the first funnel and the second funnel. The fourth funnel and the fifth funnel are arranged parallel to each other and located above the third funnel. One side of the first funnel and the second funnel are connected to and communicate with the first gas collection pipe, and one side of the third funnel is connected to and communicate with the second gas collection pipe. The first gas collection pipe communicates with the second transfer box, and the second gas collection pipe communicates with the first transfer box. The connecting pipe is provided with a rotary adjustment part and a rotary switch part, and the rotary adjustment part is connected to the rotary switch part. The air collection box is equipped with a rotating air intake pipe, and a transmission part is provided at the bottom of the air collection box. The transmission part is connected to the rotating air intake pipe and the rotating adjustment part respectively.

[0007] One end of the rotating air intake pipe is connected to the drive assembly, which includes a drive motor and a drive shaft. One end of the drive shaft is connected to the rotating air intake pipe, and the other end of the drive shaft is connected to the output end of the drive motor.

[0008] The rotary adjustment part includes a rotary joint and an adjuster. The rotary joint is movably mounted on the connecting pipe. The adjuster includes a fixed adjusting plate and a movable adjusting plate. The movable adjusting plate is fixed on the rotary joint, and the fixed adjusting plate is fixed on the inner wall of the connecting pipe. Both the fixed adjusting plate and the movable adjusting plate are provided with connecting ports and are compatible with each other.

[0009] The rotary switch includes a retainer, a lead screw, a connecting pipe, a moving block, and a lifting plate. The retainer is fixedly installed inside the connecting pipe. One end of the connecting pipe is connected to the rotating joint. A connecting seat is provided inside the connecting pipe. One end of the lead screw is connected to the connecting seat, and the other end of the lead screw is movably installed on one side of the retainer. The moving block is movably installed on the lead screw. The lifting plate is connected to one side of the moving block. A notch is provided on the connecting pipe, and the notch connects the second transfer box and the connecting pipe. The notch is adapted to the lifting plate.

[0010] The transmission unit includes a transmission shaft, a driving pulley, and a driven pulley. One end of the transmission shaft is connected to a rotating air intake pipe, and the other end of the transmission shaft is connected to the driving pulley. The driven pulley is mounted on a rotating joint, and the driving pulley and the driven pulley are driven by a transmission belt.

[0011] The gas collection box is equipped with a fixed pipe inside, and two rows of air outlets are symmetrically arranged on the side of the fixed pipe. The rotating air inlet pipe is provided with a slot, and the initial position of the slot is located on one side of the air outlet.

[0012] The air outlet assembly includes a collection section, a rotating ball, and a transducer. The collection section includes a collector and a valve. A transducer is provided on the top of the air collection box. The transducer is connected to the air collection box through a rotating air inlet pipe. Collectors are provided on both sides of the transducer. A valve is provided between the collector and the transducer. The valve is used to control the connection between the collector and the transducer. The rotating ball is connected to the rotating air inlet pipe.

[0013] The bottom of the second transfer box is provided with a mounting base, the first funnel and the second funnel are mounted on one side of the mounting base, and the third funnel is mounted on one side of the second transfer box.

[0014] A method for collecting subglacial stratified gas includes the following steps: S1. Place under ice; Sampling holes are made in the ice, and the device is slowly lowered into the water, ensuring that the first, second, third, fourth and fifth funnels are all in the space under the ice with their openings facing downwards, while the rest of the device is above the water. S2, Gas collection; The lower layer gas enters the top through the openings of the first and second funnels, and then enters the second transfer box through the first gas collecting pipe; The middle layer gas enters the top through the opening of the third funnel and then enters the first transfer box through the second gas collecting pipe; The top gas enters the top through the openings of the fourth and fifth funnels and then directly into the gas collection box; S3, gas collection in batches; When gas enters the transfer box and the gas collection box, the drive motor drives the rotating air intake pipe to rotate, so that the slot of the rotating air intake pipe rotates to the position of the air outlet, and the rotation angle is adjusted according to the gas collection volume to change the overlap between the slot and the air outlet. After the gas in the gas collection box is halfway discharged, it continues to drive the rotary intake pipe to rotate. The rotary intake pipe drives the rotary joint to rotate through the transmission part. The rotary joint drives the movable adjusting plate in the regulator to rotate, so that the communication port of the movable adjusting plate overlaps with that of the fixed adjusting plate. The speed at which the second transfer box enters the gas collection box is adjusted by the size of the overlap angle. After the gas in the second transfer box enters the gas collection box and is collected, the drive motor drives the rotating air intake pipe to rotate, and the rotating joint drives the lead screw to rotate. The moving block on the lead screw moves, and then the lifting plate moves downward, thereby exposing the notch. S4. Collect gas; The gas in the gas collection box then enters the transferor through the rotating inlet pipe, and then enters different collectors through the rotating ball; In this process, a gas storage cylinder or gas collection bag is installed on the collector.

[0015] The present invention has the following beneficial effects: This invention utilizes a method where, after the gas in the gas collection box has been partially discharged, it continues to drive the rotary intake pipe to rotate. The rotary intake pipe, through a transmission unit, drives a rotating joint to rotate, which in turn drives a movable adjusting plate in the regulator to rotate. This causes the movable adjusting plate to overlap with the communication port of the fixed adjusting plate. By adjusting the angle of overlap, the speed at which the second transfer box enters the gas collection box is adjusted. By regulating the intake speed of the rotary intake pipe, the invention automatically regulates the opening of the switch for the second transfer box to enter the gas collection box, and also regulates the gas delivery speed of the second transfer box entering the gas collection box, ensuring that the output speeds of each stage are matched.

[0016] In this invention, the lower layer gas enters the top through the openings of the first and second funnels, and then enters the second transfer box through the first gas collecting pipe; the middle layer gas enters the top through the opening of the third funnel, and then enters the first transfer box through the second gas collecting pipe; the top layer gas enters the top through the openings of the fourth and fifth funnels, and then directly enters the gas collecting box; the connecting pipe is equipped with a rotary adjustment part and a rotary switch part, which are connected to each other. Through the series and parallel structure design of the multi-stage inverted funnels, air from different levels is collected through different funnels and collected separately, realizing efficient capture and stratified enrichment of sub-ice gas.

[0017] This invention sets up a first funnel and a second funnel connected to a second transfer box, a third funnel connected to a first transfer box, and a fourth and fifth funnel directly connected to a gas collection box. In this way, the gases collected at each stage can be distinguished, which facilitates research.

[0018] This invention involves collecting gas from the second transfer box into the gas collection box, then using a drive motor to rotate the rotary inlet pipe. This rotation, via a rotary joint, causes the lead screw to rotate, moving a movable block on the lead screw and lowering a lifting plate to expose a notch. By adjusting the rotation angle of the rotary inlet pipe, the gas from the first transfer box is controlled to enter the gas collection box. This ensures that once one level of gas is almost collected, the next level of gas is directly input, resulting in better connection and guaranteeing that the collected concentration matches the gas concentration under the ice.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a production mold for a double-arc honeycomb panel according to the present invention; Figure 2 This is a front view structural diagram of a production mold for a double-arc honeycomb panel according to the present invention; Figure 3 For the present invention Figure 2 Sectional view at point AA; Figure 4 This is a three-dimensional structural diagram of the first transfer box in this invention; Figure 5This is a schematic diagram of the internal structure of the first transfer box in this invention; Figure 6 This is a schematic diagram of the structure in which the fixed tube and the rotating intake tube cooperate in this invention; Figure 7 For the present invention Figure 3 Enlarged view of a portion of point A in the middle; Figure 8 For the present invention Figure 5 Enlarged view of a section at point B in the middle; Figure 9 For the present invention Figure 5 Enlarged view of a section at point C.

[0022] The attached diagram lists the components represented by each number as follows: 110. Gas collecting box; 120. Gas collecting assembly; 130. Gas collecting section; 1301. First funnel; 1302. Second funnel; 1303. Third funnel; 1304. Fourth funnel; 1305. Fifth funnel; 1306. First gas collecting pipe; 1307. Second gas collecting pipe; 140. Gas conveying section; 1401. First transfer box; 1402. Second transfer box; 1403. Connecting pipe; 150. Gas outlet assembly; 1501. Rotating air inlet pipe; 1502. Slotted section; 1503. Gathering section; 1504. Rotating ball; 1507. Transferr; 1508. Collector; 1509. Valve; 170, Transmission unit; 1701, Transmission shaft; 1702, Driving pulley; 1703, Driven pulley; 180, Rotary adjustment unit; 1801, Rotary joint; 1802, Regulator; 1803, Fixed adjusting plate; 1804, Movable adjusting plate; 190, Rotary switch unit; 1901, Fixing device; 1902, Lead screw; 1903, Connecting pipe; 1904, Moving block; 1905, Lifting plate; 1906, Notch; 210, Drive assembly; 2101, Drive motor; 2102, Drive shaft; 220, Fixed pipe; 2201, Air outlet; 310, Mounting base. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the 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.

[0024] In the description of this invention, it should be understood that the terms "upper," "middle," "outer," "inner," etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0025] like Figures 1-9 As shown, this embodiment of a sub-ice stratified gas collection device includes a gas collection box 110, a gas collection assembly 120, and a gas outlet assembly 150. The gas collection assembly 120 includes a gas collection section 130 and a gas delivery section 140. The gas delivery section 140 includes a first transfer box 1401, a second transfer box 1402, and a connecting pipe 1403. The first transfer box 1401 is installed at the bottom of the gas collection box 110, the second transfer box 1402 is installed below the first transfer box 1401, and the connecting pipe 1403 connects the second transfer box 1402 and the gas collection box 110, and passes through the first transfer box 1401. The gas collection section 130 includes a first funnel 1301, a second funnel 1302, a third funnel 1303, a fourth funnel 1304, a fifth funnel 1305, a first gas collection pipe 1306, and a fifth funnel 1405. Two gas collecting pipes 1307, a first funnel 1301 and a second funnel 1302 are arranged in parallel with a gap between them, a third funnel 1303 is located above the first funnel 1301 and the second funnel 1302, a fourth funnel 1304 and a fifth funnel 1305 are arranged in parallel and located above the third funnel 1303, one side of the first funnel 1301 and the second funnel 1302 are connected to and communicate with the first gas collecting pipe 1306, one side of the third funnel 1303 is connected to and communicate with the second gas collecting pipe 1307, the first gas collecting pipe 1306 is connected to the second transfer box 1402, and the second gas collecting pipe 1307 is connected to the first transfer box 1401; During operation, the lower layer gas enters the top through the openings of the first funnel 1301 and the second funnel 1302, and then enters the second transfer box 1402 through the first gas collecting pipe 1306; the middle layer gas enters the top through the opening of the third funnel 1303, and then enters the first transfer box 1401 through the second gas collecting pipe 1307; the top layer gas enters the top through the openings of the fourth funnel 1304 and the fifth funnel 1305, and then directly enters the gas collecting box 110; the connecting pipe 1403 is equipped with a rotary adjustment part 180 and a rotary switch part 190, which are connected. Through the series and parallel structure design of the multi-stage inverted funnels, air from different levels is collected through different funnels and collected separately, realizing efficient capture and stratified enrichment of gas under ice; A rotating air inlet pipe 1501 is movably installed inside the air collection box 110. A transmission part 170 is provided at the bottom of the air collection box 110. The transmission part 170 is connected to the rotating air inlet pipe 1501 and the rotating adjustment part 180 respectively. By setting the first funnel 1301 and the second funnel 1302 to be connected to the second transfer box 1402, the third funnel 1303 to be connected to the first transfer box 1401, and the fourth funnel 1304 and the fifth funnel 1305 to be directly connected to the gas collection box 110, the gases collected at each level can be distinguished, which is convenient for research.

[0026] One end of the rotating intake pipe 1501 is connected to the drive assembly 210. The drive assembly 210 includes a drive motor 2101 and a drive shaft 2102. One end of the drive shaft 2102 is connected to the rotating intake pipe 1501, and the other end of the drive shaft 2102 is connected to the output end of the drive motor 2101.

[0027] The rotary adjustment unit 180 includes a rotary joint 1801 and an adjuster 1802. The rotary joint 1801 is movably disposed on the connecting pipe 1403. The adjuster 1802 includes a fixed adjusting plate 1803 and a movable adjusting plate 1804. The movable adjusting plate 1804 is fixed on the rotary joint 1801. The fixed adjusting plate 1803 is fixedly disposed on the inner wall of the connecting pipe 1403. Both the fixed adjusting plate 1803 and the movable adjusting plate 1804 are provided with a communication port and are mutually compatible. During operation, after the gas in the gas collection box 110 is halfway output, it continues to drive the rotary intake pipe 1501 to rotate. The rotary intake pipe 1501 drives the rotary joint 1801 to rotate via the transmission unit 170. The rotary joint 1801 drives the movable adjusting plate 1804 in the regulator 1802 to rotate, so that the movable adjusting plate 1804 overlaps with the communication port of the fixed adjusting plate 1803. The speed at which the second transfer box 1402 enters the gas collection box 110 is adjusted by the size of the overlap angle. By adjusting the intake speed of the rotary intake pipe 1501, the switch for opening the second transfer box 1402 to enter the gas collection box 110 is automatically adjusted, and the gas delivery speed of the second transfer box 1402 entering the gas collection box 110 is also adjusted to make the output speed of each level compatible.

[0028] The rotary switch unit 190 includes a retainer 1901, a lead screw 1902, a connecting pipe 1903, a moving block 1904, and a lifting plate 1905. The retainer 1901 is fixedly installed inside the connecting pipe 1403. One end of the connecting pipe 1903 is connected to the rotating joint 1801. A connecting seat is provided inside the connecting pipe 1903. One end of the lead screw 1902 is connected to the connecting seat, and the other end of the lead screw 1902 is movably installed on one side of the retainer 1901. The moving block 1904 is movably installed on the lead screw 1902. The lifting plate 1905 is connected to one side of the moving block 1904. A notch 1906 is provided on the connecting pipe 1403. The notch 1906 connects the second transfer box 1402 and the connecting pipe 1403. The notch 1906 is adapted to the lifting plate 1905. During operation, gas from the second transfer box 1402 enters the gas collection box 110 and is collected. Then, the drive motor 2101 drives the rotary intake pipe 1501 to rotate, which in turn drives the lead screw 1902 to rotate via the rotary joint 1801. The moving block 1904 on the lead screw 1902 moves, causing the lifting plate 1905 to move downward, thus allowing the notch 1906 to leak out. By adjusting the rotation angle of the rotary intake pipe 1501, the gas from the first transfer box 1401 is controlled to enter the gas collection box 110. This ensures that after one level of gas is almost collected, the gas from the next level is directly input, resulting in better connection and ensuring that the collected concentration matches the gas concentration under the ice.

[0029] The transmission unit 170 includes a transmission shaft 1701, a drive pulley 1702, and a driven pulley 1703. One end of the transmission shaft 1701 is connected to the rotary air intake pipe 1501, and the other end of the transmission shaft 1701 is connected to the drive pulley 1702. The driven pulley 1703 is mounted on the rotary joint 1801, and the drive pulley 1702 and the driven pulley 1703 are driven by a transmission belt.

[0030] The gas collection box 110 is equipped with a fixed pipe 220. The fixed pipe 220 has two rows of air outlets 2201 arranged in an array on its side. The rotating air inlet pipe 1501 is provided with a slot 1502. The initial position of the slot 1502 is located on one side of the air outlet 2201.

[0031] The air outlet assembly 150 includes a collection section 1503, a rotating ball 1504, and a transducer 1507. The collection section 1503 includes a collector 1508 and a valve 1509. The transducer 1507 is provided on the top of the air collection box 110. The transducer 1507 is connected to the air collection box 110 through a rotating air intake pipe 1501. Collectors 1508 are provided on both sides of the transducer 1507. A valve 1509 is provided between the collectors 1508 and the transducer 1507. The valve 1509 is used to control the connection between the collectors 1508 and the transducer 1507. The rotating ball 1504 is connected to the rotating air intake pipe 1501.

[0032] The bottom of the second transfer box 1402 is provided with a mounting base 310. The first funnel 1301 and the second funnel 1302 are installed on one side of the mounting base 310, and the third funnel 1303 is installed on one side of the second transfer box 1402.

[0033] A method for collecting subglacial stratified gas includes the following steps: S1. Place under ice; Sampling holes are made in the ice, and the device is slowly lowered into the water, ensuring that the first funnel 1301, the second funnel 1302, the third funnel 1303, the fourth funnel 1304 and the fifth funnel 1305 are all in the space under the ice with their openings facing downwards, while the rest are above the water. S2, Gas collection; The lower layer gas enters the top through the openings of the first funnel 1301 and the second funnel 1302, and enters the second transfer box 1402 through the first gas collecting pipe 1306; The middle layer gas enters the top through the opening of the third funnel 1303 and enters the first transfer box 1401 through the second gas collecting pipe 1307; The top gas enters the top through the openings of the fourth funnel 1304 and the fifth funnel 1305, and then directly enters the gas collection box 110. S3, gas collection in batches; When gas enters the transfer box and the gas collection box 110, the drive motor 2101 drives the rotating air inlet pipe 1501 to rotate, so that the slot 1502 of the rotating air inlet pipe 1501 rotates to the position of the air outlet 2201, and adjusts the rotation angle according to the gas collection volume, so that the overlap between the slot 1502 and the air outlet 2201 changes. After the gas in the gas collection box 110 is halfway discharged, it continues to drive the rotary intake pipe 1501 to rotate. The rotary intake pipe 1501 drives the rotary joint 1801 to rotate through the transmission part 170. The rotary joint 1801 drives the movable adjusting plate 1804 in the regulator 1802 to rotate, so that the movable adjusting plate 1804 overlaps with the communication port of the fixed adjusting plate 1803. The speed at which the second transfer box 1402 enters the gas collection box 110 is adjusted by the size of the overlap angle. After the gas in the second transfer box 1402 enters the gas collection box 110 and is collected, the rotating air inlet pipe 1501 is driven to rotate by the drive motor 2101, and the lead screw 1902 is driven to rotate by the rotating joint 1801. The moving block 1904 on the lead screw 1902 moves, and then the lifting plate 1905 moves downward, so that the notch 1906 leaks out. S4. Collect gas; The gas in the gas collection box 110 then enters the transferor 1507 through the rotating inlet pipe 1501, and then enters different collectors 1508 through the rotating ball 1504; When collecting gas, a gas storage bottle or gas collection bag is installed on the collector 1508.

[0034] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sub-ice stratified gas collection device, characterized in that, It includes an air collection box (110), an air collection assembly (120), and an air outlet assembly (150). The gas collection assembly (120) includes a gas collection section (130) and a gas delivery section (140); the gas delivery section (140) includes a first transfer box (1401), a second transfer box (1402), and a connecting pipe (1403). The first transfer box (1401) is installed at the bottom of the gas collection box (110), the second transfer box (1402) is installed below the first transfer box (1401), and the connecting pipe (1403) connects the second transfer box (1402) and the gas collection box (110) and passes through the first transfer box (1401). The connecting pipe (1403) is provided with a rotary adjustment part (180) and a rotary switch part (190), and the rotary adjustment part (180) and the rotary switch part (190) are connected; The air collection box (110) is equipped with a rotating air intake pipe (1501) inside. The bottom of the air collection box (110) is equipped with a transmission part (170), which is connected to the rotating air intake pipe (1501) and the rotating adjustment part (180) respectively.

2. The sub-ice stratified gas collection device according to claim 1, characterized in that, The gas collecting section (130) includes a first funnel (1301), a second funnel (1302), a third funnel (1303), a fourth funnel (1304), and a fifth funnel (1305), a first gas collecting pipe (1306), and a second gas collecting pipe (1307). The first funnel (1301) and the second funnel (1302) are arranged parallel to each other and have a gap between them. The third funnel (1303) is located above the first funnel (1301) and the second funnel (1302). The fourth funnel (1304) and the fifth funnel (1305) are arranged parallel to each other and have a gap between them. The funnel (1304) and the fifth funnel (1305) are arranged in parallel and located above the third funnel (1303). The first funnel (1301) and the second funnel (1302) are connected to the first gas collecting pipe (1306) on one side and communicate with each other. The third funnel (1303) is connected to the second gas collecting pipe (1307) on one side and communicates with each other. The first gas collecting pipe (1306) is connected to the second transfer box (1402) and the second gas collecting pipe (1307) is connected to the first transfer box (1401). One end of the rotating intake pipe (1501) is connected to the drive assembly (210). The drive assembly (210) includes a drive motor (2101) and a drive shaft (2102). One end of the drive shaft (2102) is connected to the rotating intake pipe (1501), and the other end of the drive shaft (2102) is connected to the output end of the drive motor (2101).

3. The sub-ice stratified gas collection device according to claim 2, characterized in that, The rotary adjustment part (180) includes a rotary joint (1801) and an adjuster (1802). The rotary joint (1801) is movably disposed on the connecting pipe (1403). The adjuster (1802) includes a fixed adjusting plate (1803) and a movable adjusting plate (1804). The movable adjusting plate (1804) is fixed on the rotary joint (1801). The fixed adjusting plate (1803) is fixedly disposed on the inner wall of the connecting pipe (1403). Both the fixed adjusting plate (1803) and the movable adjusting plate (1804) are provided with connecting ports and are compatible with each other.

4. The sub-ice stratified gas collection device according to claim 3, characterized in that, The rotary switch unit (190) includes a retainer (1901), a lead screw (1902), a connecting pipe (1903), a moving block (1904), and a lifting plate (1905). The retainer (1901) is fixedly installed inside the connecting pipe (1403). One end of the connecting pipe (1903) is connected to the rotating joint (1801). A connecting seat is provided inside the connecting pipe (1903). One end of the lead screw (1902) is connected to the connecting seat. The other end of the lead screw (1902) is movably mounted on one side of the fixture (1901). The moving block (1904) is movably mounted on the lead screw (1902). The lifting plate (1905) is connected to one side of the moving block (1904). The connecting pipe (1403) is provided with a notch (1906). The notch (1906) connects the second transfer box (1402) and the connecting pipe (1403). The notch (1906) is adapted to the lifting plate (1905).

5. The sub-ice stratified gas collection device according to claim 4, characterized in that, The transmission unit (170) includes a transmission shaft (1701), a drive pulley (1702), and a driven pulley (1703). One end of the transmission shaft (1701) is connected to the rotating air intake pipe (1501), and the other end of the transmission shaft (1701) is connected to the drive pulley (1702). The driven pulley (1703) is mounted on the rotating joint (1801), and the drive pulley (1702) and the driven pulley (1703) are driven by a transmission belt.

6. The sub-ice stratified gas collection device according to claim 5, characterized in that, The gas collection box (110) is equipped with a fixed pipe (220) inside. The fixed pipe (220) has two rows of air outlets (2201) arranged in an array on its side. The rotating air inlet pipe (1501) is provided with a slot (1502). The initial position of the slot (1502) is located on one side of the air outlet (2201).

7. The sub-ice stratified gas collection device according to claim 6, characterized in that, The air outlet assembly (150) includes a collection section (1503), a rotating ball (1504), and a transducer (1507). The collection section (1503) includes a collector (1508) and a valve (1509). The transducer (1507) is provided on the top of the air collection box (110). The transducer (1507) is connected to the air collection box (110) through a rotating air intake pipe (1501). Collectors (1508) are provided on both sides of the transducer (1507). A valve (1509) is provided between the collector (1508) and the transducer (1507). The valve (1509) is used to control the connection between the collector (1508) and the transducer (1507). The rotating ball (1504) is connected to the rotating air intake pipe (1501).

8. The sub-ice stratified gas collection device according to claim 7, characterized in that, The second transfer box (1402) is provided with a mounting base (310) at the bottom. The first funnel (1301) and the second funnel (1302) are mounted on one side of the mounting base (310), and the third funnel (1303) is mounted on one side of the second transfer box (1402).

9. The method for collecting subglacial stratified gas according to claim 8, characterized in that, Includes the following steps: S1. Place under ice; Sampling holes are made on the ice, and the device is slowly lowered into the water, ensuring that the first funnel (1301), the second funnel (1302), the third funnel (1303), the fourth funnel (1304), and the fifth funnel (1305) are all in the space under the ice with their openings facing downwards, while the rest of the device is above the water. S2, Gas collection; The lower gas enters the top through the openings of the first funnel (1301) and the second funnel (1302), and enters the second transfer box (1402) through the first gas collecting pipe (1306); The middle layer gas enters the top through the opening of the third funnel (1303) and enters the first transfer box (1401) through the second gas collecting pipe (1307); The top gas enters the top through the openings of the fourth funnel (1304) and the fifth funnel (1305) and directly enters the gas collection box (110); S3, gas collection in batches; When gas enters the transfer box and the gas collection box (110), the drive motor (2101) drives the rotating air intake pipe (1501) to rotate, so that the slot (1502) of the rotating air intake pipe (1501) rotates to the position of the air outlet (2201), and the rotation angle is adjusted according to the gas collection volume, so that the overlap between the slot (1502) and the air outlet (2201) changes; After the gas in the gas collection box (110) is halfway discharged, it continues to drive the rotary intake pipe (1501) to rotate. The rotary intake pipe (1501) drives the rotary joint (1801) to rotate through the transmission part (170). The rotary joint (1801) drives the movable adjusting plate (1804) in the regulator (1802) to rotate, so that the movable adjusting plate (1804) overlaps with the communication port of the fixed adjusting plate (1803). The speed at which the second transfer box (1402) enters the gas collection box (110) is adjusted by the size of the overlap angle. After the gas in the second transfer box (1402) enters the gas collection box (110) and is collected, it is driven by the drive motor (2101) to rotate the rotary intake pipe (1501), and the rotary joint (1801) drives the lead screw (1902) to rotate. The moving block (1904) on the lead screw (1902) moves, and then the lifting plate (1905) moves downward, so that the notch (1906) leaks out. S4. Collect gas; The gas in the gas collection box (110) then enters the transferor (1507) through the rotating air inlet pipe (1501), and then enters different collectors (1508) through the rotating ball (1504).

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