Tandem type water body sampling device for Antarctic subglacial lake

Abstract

The invention provides a tandem type water body sampling device for an Antarctic subglacial lake, which comprises a traction rope, a plurality of sampling devices and a steel wire rope, the plurality of sampling devices are connected in series through the steel wire rope, and the traction rope is connected with the topmost sampling device; the sampling device comprises a circuit assembly and a sampling assembly, the circuit assembly comprises a motor, a coupler, a transmission screw, a valve element and a connecting shell which are arranged in a first closed shell, and the sampling assembly comprises a sampling cavity located in a second closed shell and a valve for closing one side of the sampling cavity; the two ends of the connecting shell are connected into the first closed shell and the second closed shell respectively, the motor drives the transmission screw to rotate and enables the valve to be opened or closed, and sampling of the sampling cavity is completed. The multiple sampling devices are connected in series through the steel wire rope, then the traction rope penetrates through the ice layer hole and enters the subglacial lake for sampling, sampling of point positions at different depths can be achieved, and the problem of pollution caused by multi-layer collection is avoided.

Description

Technical Field

[0001] This invention relates to the field of underwater equipment technology, and in particular to a series water sampling device for subglacial lakes in Antarctica. Background Technology

[0002] Antarctic subglacial lakes, as unique and enclosed extreme environmental systems, are increasingly attracting attention from multiple fields, including Earth sciences, life sciences, and environmental sciences. Covered for thousands of meters by ice sheets, these lakes are remarkably well-preserved due to the difficulty of extraction. Their water composition and unknown microbial systems are therefore of significant scientific importance for revealing the mechanisms of early life origins on Earth, adaptation to extreme environments, and the possibility of extraterrestrial life.

[0003] Due to its unique geographical and environmental conditions, in-situ sampling of subglacial lakes faces many challenges: for example, the water body of subglacial lakes may have differences in temperature, salinity, dissolved oxygen, nutrients and microbial distribution in the vertical direction, so it is necessary to have multi-level and segmented sampling capabilities to achieve scientific sampling that truly reflects the profile structure of the lake water.

[0004] Therefore, there is an urgent need to develop a water sampling device with stratified sampling capability. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a series water sampling device for subglacial lakes in Antarctica.

[0006] This invention is achieved through the following technical solution: This invention proposes a tandem water sampling device for subglacial lakes in Antarctica, comprising a traction rope, a sampling device, and a steel wire rope, wherein: Multiple sampling devices are connected in series via the steel wire rope, and the traction rope is connected to the topmost sampling device; The sampling device includes a circuit assembly and a sampling assembly. The circuit assembly includes a motor, a coupling, a transmission screw, a valve core, and a connecting housing disposed within a first enclosed housing. The sampling assembly includes a sampling chamber located within a second enclosed housing and a valve that closes one side of the sampling chamber. The two ends of the connecting housing are respectively connected to the first enclosed housing and the second enclosed housing. The transmission screw is threadedly connected to the connecting housing. The two ends of the transmission screw are respectively connected to the coupling and the valve core. The two ends of the coupling are respectively connected to the output end of the transmission screw and the motor. The valve core is connected to the valve. The motor drives the transmission screw to rotate, causing the valve to open or close, thus completing the sampling of the sampling chamber.

[0007] Furthermore, a flow guide is connected to the top of the sampling device, and a lifting ring is provided at the bottom of the sampling device and the top of the flow guide. Multiple sampling devices are connected in series through the steel wire rope and the lifting ring.

[0008] Furthermore, the second enclosed housing includes a sampling sleeve, a sampling upper end cover, and a sampling lower end cover. The two ends of the sleeve are respectively connected to the sampling upper end cover and the sampling lower end cover and fixedly connected to form an internally sealed sampling cavity. One side of the sampling cavity is connected to the outside through the first flow channel of the sampling upper end cover, and the valve is located inside the first flow channel of the upper end cover.

[0009] Furthermore, the first enclosed housing includes a circuit sleeve, an upper circuit cover, and a lower circuit cover. The two ends of the circuit sleeve are respectively connected to the upper circuit cover and the lower circuit cover. The two ends of the connecting housing are respectively connected to the lower circuit cover and the sampling upper cover. The motor is disposed inside the circuit sleeve, and one end of the motor passes through the lower circuit cover and is connected to the transmission screw.

[0010] Furthermore, a first plug is provided on one side of the top of the upper sampling cover, and a second plug is provided at the bottom of the lower sampling cover. The upper sampling cover and the lower sampling cover are respectively provided with an upper through hole and a lower through hole communicating with the sampling cavity. The first plug and the second plug are respectively used to close the other end of the upper through hole and the lower through hole.

[0011] Furthermore, a watertight seat is provided on the top of the circuit upper cover, which is used for connecting external communication. A pressure sensor plug is also provided on one side of the top of the circuit upper cover, which is used for installing a pressure sensor.

[0012] Furthermore, a motor connector is provided on the lower end cover of the circuit, and the motor is fixed to the lower end cover of the circuit through the motor connector.

[0013] Furthermore, a baffle and a gasket are provided in the first flow channel at the top of the sampling cap, wherein the gasket is disposed between the bottom of the valve and the first flow channel, and the baffle is disposed between the valve and the connecting shell.

[0014] Furthermore, a coupling sleeve is provided between the outer wall of the coupling and the inner wall of the connecting shell.

[0015] Furthermore, the valve is closed and opened by squeezing and releasing between itself and the valve core.

[0016] The beneficial effects of this invention are: (1) The present invention proposes a series water sampling device for subglacial lakes in Antarctica. The present invention uses steel wire ropes to connect multiple sampling devices in series, and then uses traction ropes to pass through the ice layer holes and enter the subglacial lake for sampling. This can achieve sampling at different depths and avoid the problem of multi-layer sampling and pollution.

[0017] (2) The series water sampling device for subglacial lakes in Antarctica proposed in this invention uses valves made of PEEK material and is sealed with gaskets, which can effectively avoid external pollution and cross-contamination between layers, while ensuring that the internal structure is not affected by external seawater.

[0018] (3) The series water sampling device for subglacial lakes in Antarctica proposed in this invention uses a flow guide hood set at the top of each sampling device. The curved design of the flow guide hood can effectively avoid the situation where the sampler gets stuck at the bottom of the hole due to poor position during subglacial sampling. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the series water sampling device for subglacial lakes in Antarctica according to the present invention. Figure 2 This is a structural diagram of the sampling device of the series water sampling device for subglacial lakes in Antarctica according to the present invention; Figure 3 This is a structural diagram of the flow guide hood of the series water sampling device for subglacial lakes in Antarctica according to the present invention. Figure 4 This is a cross-sectional view of the sampling device of the series water sampling device for subglacial lakes in Antarctica according to the present invention; Figure 5 This is a schematic diagram of the valve opening of the series water sampling device for subglacial lakes in Antarctica according to the present invention; Figure 6 This is a schematic diagram of the valve closure of the series water sampling device for subglacial lakes in Antarctica according to the present invention; In the diagram: 1. Traction rope; 2. Flow guide; 3. Sampling device; 31. Sampling assembly; 311. Sampling upper cover; 312. Sampling sleeve; 313. Sampling lower cover; 314. Second plug; 315. Washer; 316. Valve; 317. First plug; 318. Stop block; 32. Circuit assembly; 321. Circuit upper cover; 322. Circuit sleeve; 323. Circuit lower cover; 324. Watertight seat; 325. Motor; 326. Pressure sensor plug; 327. Coupling sleeve; 328. Coupling housing; 329. Valve core; 3210. Transmission screw; 3211. Motor connector; 3212. Wire rope; 4. Lifting ring; 5. The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0021] Please refer to Figures 1-6 This invention proposes a series water sampling device for subglacial lakes in Antarctica, comprising a traction rope 1, a sampling device 3, and a steel wire rope 4, wherein: Multiple sampling devices 3 are connected in series by steel wire ropes 4, and the traction rope is connected to the topmost sampling device 3; The sampling device 3 includes a circuit assembly 32 and a sampling assembly 31. The circuit assembly 32 includes a motor 325, a coupling 328, a transmission screw 3211, a valve core 3210, and a connecting housing 329, all housed within a first enclosed housing. The sampling assembly 31 includes a sampling chamber located within a second enclosed housing and a valve 316 on one side of the sealed sampling chamber. The two ends of the connecting housing 329 are respectively connected to the first enclosed housing and the second enclosed housing. The transmission screw 3211 is threadedly connected to the connecting housing 329. The two ends of the transmission screw 3211 are respectively connected to the coupling 328 and the valve core 3210. The two ends of the coupling 328 are respectively connected to the output ends of the transmission screw 3211 and the motor 325. The valve core 3210 is connected to the valve 316. The motor 325 drives the transmission screw 3211 to rotate, causing the valve 316 to open or close, thus completing the sampling in the sampling chamber.

[0022] In a specific embodiment, adjacent sampling devices 3 are connected end to end by steel wire ropes 4. The topmost sampling device 3 is connected to a traction rope 1. The traction rope 1 lowers multiple sampling devices 3 connected in series from the ice layer into the subglacial lake. During sampling, the motor 325 rotates, and the coupling 328 connects the rotating screw and the output end of the motor 325. When the motor 325 rotates, the transmission screw 3211 rotates synchronously through the coupling 328. Since the transmission screw 3211 is threadedly connected to the connecting housing 329, the valve core 3210 moves up and down to close and open the valve 316, thereby allowing the subglacial lake sample to enter the sampling chamber. This invention utilizes steel wire ropes 4 to connect multiple sampling devices in series, and then uses the traction rope 1 to pass through the ice layer holes and enter the subglacial lake for sampling. This enables sampling at different depths and avoids the problem of contamination from multi-layer sampling.

[0023] Furthermore, a flow guide 2 is connected to the top of the sampling device 3, and a lifting ring 5 is provided at the bottom of the sampling device 3 and the top of the flow guide 2. Multiple sampling devices 3 are connected in series by steel wire rope 4 and lifting ring 5.

[0024] In a specific implementation, the lifting ring 5 is used to connect the traction rope 1 and can connect multiple sampling devices 3 in series. The flow guide 2 is designed in an arc shape. After the sample collection is completed, the flow guide 2 can make the entire sampling device 3 smoothly removed from the cylindrical ice opening, preventing it from deviating from the sampling opening due to poor removal position when under the ice.

[0025] Furthermore, the second enclosed housing includes a sampling sleeve 312, a sampling upper end cover 311, and a sampling lower end cover 313. The two ends of the sleeve are respectively connected to the sampling upper end cover 311 and the sampling lower end cover 313 and fixedly connected to form an internally sealed sampling cavity. One side of the sampling cavity is connected to the outside through the first flow channel of the sampling upper end cover 311, and the valve 316 is located inside the first flow channel of the upper end cover.

[0026] In a specific implementation, the sampling chamber is used for sampling. The first flow channel includes a longitudinal flow channel and a lateral flow channel, which are connected to the longitudinal flow channel. A valve 316 is located at the connection between the longitudinal flow channel and the lateral flow channel. The valve 316 is opened and closed to complete the sampling of the sample.

[0027] Furthermore, the first enclosed housing includes a circuit sleeve 322, an upper circuit cover 321, and a lower circuit cover 323. The two ends of the circuit sleeve 322 are respectively connected to the upper circuit cover 321 and the lower circuit cover 323. The two ends of the connecting housing 329 are respectively connected to the lower circuit cover 323 and the sampling upper cover 311. The motor 325 is disposed inside the circuit sleeve 322, and one end of the motor 325 passes through the lower circuit cover 323 and is connected to the transmission screw 3211.

[0028] In a specific embodiment, the first closed shell, the second closed shell, and the connecting shell form a sealed space. The motor 325 is installed inside the circuit sleeve 322. The two ends of the connecting shell are respectively connected to the lower end cover 323 of the circuit and the upper end cover 311 of the sampling. The first closed shell encloses the relevant circuits and equipment inside, preventing external liquids from entering.

[0029] Furthermore, a first plug 317 is provided on one side of the top of the upper sampling cover 311, and a second plug 314 is provided at the bottom of the lower sampling cover 313. The upper sampling cover 311 and the lower sampling cover 313 are respectively provided with an upper through hole and a lower through hole that communicate with the sampling cavity. The first plug 317 and the second plug 314 are respectively used to close the other end of the upper through hole and the lower through hole.

[0030] In a specific implementation, the lower through hole penetrates the center of the lower sampling cover 313, and the upper through hole penetrates the top of the upper sampling cover 311 and is located next to the first flow channel. The first plug 317 seals the space between the upper through hole and the outside, and the second plug 314 seals the space between the lower through hole and the outside. The first plug is used for air intake, and the second plug 314 is used for water outlet. When sampling in the deep sea, the valve seat opens, and at the same time, the first plug 317 opens and the second plug 314 closes, allowing the sample to enter the sampling chamber to complete the sampling. When it is necessary to remove the sample from the sampling chamber, the second plug 314 and the first plug 317 open simultaneously to remove the sample.

[0031] Furthermore, a watertight seat 324 is provided on the top of the circuit upper cover 321. The watertight seat 324 is used to connect to external communication. A pressure sensor plug 326 is also provided on one side of the top of the circuit upper cover 321. The pressure sensor plug 326 is used to install a pressure sensor.

[0032] In a specific implementation, the watertight seat 324 is responsible for the connection and communication between the internal circuit and the outside, while the pressure sensor plug 326 can be used to install the pressure sensor. The pressure sensor monitors the external pressure in real time, and when the sampler reaches the preset pressure, the sampling device 3 starts to work automatically.

[0033] Furthermore, a motor connector 3212 is provided on the lower end cover 323 of the circuit, and the motor 325 is fixed to the lower end cover 323 of the circuit through the motor connector 3212.

[0034] In a specific embodiment, the motor connector 3212 is used to fix the motor 325 to the base. The motor 325 is first connected to the motor connector 3212, and then the motor connector 3212 is fixed to the lower end cover 323 of the circuit.

[0035] Furthermore, a baffle 318 and a washer 315 are provided in the first flow channel at the top of the sampling cap 311, wherein the washer 315 is provided between the bottom of the valve 316 and the first flow channel, and the baffle 318 is provided between the valve 316 and the connecting shell.

[0036] In a specific embodiment, a stop block 318 is disposed at the top of the valve 316, and a washer 315 is disposed at the bottom of the valve 316. The stop block 318 is used to fix the position of the valve 316, and the washer 315 is used to support the bottom of the valve 316. Furthermore, a coupling sleeve 327 is provided between the outer wall of the coupling 328 and the inner wall of the connecting housing.

[0037] In a specific embodiment, the coupling sleeve 327 is used to fix the coupling 328 and prevent the coupling 328 from moving radially.

[0038] Furthermore, valve 316 is closed and opened by squeezing and releasing between valve core 3210.

[0039] In a specific implementation, the valve core 3210 presses one side of the valve 316 to open and close the valve 316.

[0040] Of course, the present invention may have many other embodiments. Based on this embodiment, other embodiments obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention.

Claims

1. A series water sampling device for subglacial lakes in Antarctica, characterized in that, Includes traction ropes, sampling devices, and wire ropes, among which: Multiple sampling devices are connected in series via the steel wire rope, and the traction rope is connected to the topmost sampling device; The sampling device includes a circuit assembly and a sampling assembly. The circuit assembly includes a motor, a coupling, a transmission screw, a valve core, and a connecting housing disposed within a first enclosed housing. The sampling assembly includes a sampling chamber located within a second enclosed housing and a valve that closes one side of the sampling chamber. The two ends of the connecting housing are respectively connected to the first enclosed housing and the second enclosed housing. The transmission screw is threadedly connected to the connecting housing. The two ends of the transmission screw are respectively connected to the coupling and the valve core. The two ends of the coupling are respectively connected to the output end of the transmission screw and the motor. The valve core is connected to the valve. The motor drives the transmission screw to rotate, causing the valve to open or close, thus completing the sampling of the sampling chamber.

2. The series water sampling device for subglacial lakes in Antarctica according to claim 1, characterized in that, The top of the sampling device is connected to a flow guide, and the bottom of the sampling device and the top of the flow guide are provided with lifting rings. Multiple sampling devices are connected in series by the steel wire rope and the lifting rings.

3. The series water sampling device for subglacial lakes in Antarctica according to claim 1, characterized in that, The second enclosed housing includes a sampling sleeve, a sampling upper cover, and a sampling lower cover. The two ends of the sleeve are respectively connected to the sampling upper cover and the sampling lower cover and fixedly connected to form an internally sealed sampling cavity. One side of the sampling cavity is connected to the outside through the first flow channel of the sampling upper cover, and the valve is located inside the first flow channel of the upper cover.

4. The series water sampling device for subglacial lakes in Antarctica according to claim 3, characterized in that, The first enclosed housing includes a circuit sleeve, an upper circuit cover, and a lower circuit cover. The two ends of the circuit sleeve are respectively connected to the upper circuit cover and the lower circuit cover. The two ends of the connecting housing are respectively connected to the lower circuit cover and the sampling upper cover. The motor is disposed inside the circuit sleeve, and one end of the motor passes through the lower circuit cover and is connected to the transmission screw.

5. The series water sampling device for subglacial lakes in Antarctica according to claim 3, characterized in that, A first plug is provided on one side of the top of the upper sampling cap, and a second plug is provided at the bottom of the lower sampling cap. The upper sampling cap and the lower sampling cap are respectively provided with an upper through hole and a lower through hole that communicate with the sampling cavity. The first plug and the second plug are respectively used to close the other end of the upper through hole and the lower through hole.

6. The series water sampling device for subglacial lakes in Antarctica according to claim 4, characterized in that, A watertight seat is provided on the top of the circuit upper cover. The watertight seat is used to connect to external communication. A pressure sensor plug is also provided on one side of the top of the circuit upper cover. The pressure sensor plug is used to install a pressure sensor.

7. The series water sampling device for subglacial lakes in Antarctica according to claim 4, characterized in that, A motor connector is provided on the lower end cover of the circuit, and the motor is fixed to the lower end cover of the circuit through the motor connector.

8. The series water sampling device for subglacial lakes in Antarctica according to claim 4, characterized in that, A baffle and a gasket are provided in the first flow channel at the top of the sampling cap, wherein the gasket is located between the bottom of the valve and the first flow channel, and the baffle is located between the valve and the connecting shell.

9. The series water sampling device for subglacial lakes in Antarctica according to claim 7, characterized in that, A coupling sleeve is provided between the outer wall of the coupling and the inner wall of the connecting shell.

10. The series water sampling device for subglacial lakes in Antarctica according to claim 1, characterized in that, The valve is closed and opened by squeezing and releasing between itself and the valve core.

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