A dynamically adjustable subglacial stratified water sampler and its usage method

Abstract

This invention provides a dynamically adjustable sub-ice stratified water sampler and its usage method, belonging to the field of environmental sample collection, monitoring, and environmental remediation technology. The device mainly consists of three parts: an immersion-type water sampling device, a dynamic adjustment mechanism for ice-covered environments, and a multi-parameter water quality change point monitoring system. The immersion-type water sampling device comprises an immersion water pipe, a peristaltic pump hose, a peristaltic pump, and a sampling bottle. The dynamic adjustment mechanism for ice-covered environments comprises an upper ice surface support, a spiral telescopic scale, a lower ice surface support, a foldable remote-controlled sampling frame, and a support frame. The multi-parameter water quality change point monitoring system comprises an integrated box, a pressure sensor, a multi-parameter sensor, and a smart remote control panel. The beneficial effects of this invention are that it achieves accurate sampling of stratified water bodies within a 1m range under ice with low environmental impact, featuring low environmental impact, vertical dynamic adjustment, in-situ real-time water quality monitoring, and change point capture capabilities.

Description

Technical Field

[0001] This invention belongs to the field of environmental sample collection, monitoring and environmental management technology, and involves the stratified collection of water samples from rivers, lakes and reservoirs, especially the collection and environmental monitoring of water bodies under ice during the winter ice-covered period, and provides a dynamically adjustable sub-ice stratified water sample collector. Background Technology

[0002] With the development of my country's social economy, water environment problems are becoming increasingly prominent, while environmental awareness is gradually improving. Environmental protection has become a strategic choice for my country's long-term development. The most basic task of environmental protection is to understand and grasp the state of the water environment. In mid-to-high latitude regions, low winter temperatures cause water surfaces to freeze, posing challenges to water quality monitoring. The same is true in northern my country; water quality monitoring under frozen conditions in winter is limited by insufficient collection and monitoring equipment, and winter water quality monitoring is rarely carried out, especially sample collection at the ice-water interface under the ice, for which there is still no good solution. Research has found that the "salt discharge effect" during the freezing process can increase surface water pollution. The salt discharge effect usually has a greater impact within 1 meter under the ice, especially at the ice-water interface. Existing methods for collecting and monitoring water samples under ice typically employ conventional water samplers, such as Nice bottles, cap-type water samplers, and simple water samplers. These devices are typically 20-50 cm high, making it difficult to collect water samples at the ice-water interface, regardless of the water intake method used. Furthermore, they cannot effectively collect stratified water samples within a 1-meter range. Some researchers have designed fixed, equidistant columnar stratified sub-ice samplers, but these are difficult to adjust for different sub-ice environments. In addition, traditional water sampling often relies on experience or equidistant methods for stratified sampling, making it difficult to effectively capture sensitive water quality changes under ice.

[0003] The stratified water quality under the unique conditions of sub-ice has become a weak point in winter water environment management. Existing equipment is insufficient for sample collection under these conditions. To effectively collect stratified water samples under these conditions, it is necessary to develop a sub-ice stratified water sampler with low environmental impact, vertical dynamic adjustment, in-situ real-time water quality monitoring, and variable-point capture capabilities, providing technical support for water quality monitoring under these special conditions. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a high-precision, dynamically adjustable subglacial water sampler suitable for various working conditions such as rivers, lakes, and reservoirs under winter ice conditions, based on in-situ water quality monitoring.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A dynamically adjustable subglacial stratified water sampler comprises three parts: an immersion water sampling device, a dynamic adjustment mechanism for ice-covered environments, and a multi-parameter water quality change point monitoring system.

[0007] The aforementioned immersion water sampling device includes an immersion water pipe 1, a peristaltic pump hose 2, a peristaltic pump 3, and a sampling bottle 4. The immersion water pipe 1 is divided into an inlet section 1-1 and an outlet section 1-2, and has a T-shaped structure. The inlet section 1-1 is an immersion design, horizontally inserted and fixed in a dynamic adjustment mechanism, and uses an electric slider 8-3 to achieve vertical adjustment in the water body, so as to realize dynamic adjustment of the inlet and stratified sample collection. The outlet section 1-2 is connected to the sampling bottle 4 through the peristaltic pump hose 2, and the peristaltic pump hose 2 is equipped with a peristaltic pump 3. When collecting water samples, the outlet section 1-2 and the inlet section 1-1 are fixed vertically connected to provide a stable hydraulic environment, and are connected to the peristaltic pump 3 through the peristaltic pump hose 2. The peristaltic pump 3 slowly draws out the water sample and injects it into the sampling bottle 4, and uses an overflow method for control to minimize the influence of the external environment on the sampling process.

[0008] Furthermore, the electronic valve 1-3 is positioned 10 centimeters at the junction of the inlet section 1-1 and the outlet section 1-2. The inlet section 1-1 can extend inward 0.5 meters along the sampling port, thereby effectively reducing the environmental impact around the sampling port. For example, after the ice breaks at the sampling port, dissolved oxygen on the water surface will come into contact with the atmosphere, changing the dissolved oxygen concentration on the surface, especially at the ice-water interface.

[0009] The dynamic adjustment mechanism for the frozen environment includes an upper ice surface support 5, a spiral telescopic scale 6, a lower ice surface support 7, a foldable remote-controlled sampling frame 8, and a support frame 9. A spiral telescopic scale 6 is installed between one end of the upper ice surface support 5 and the lower ice surface support 7. The height between the ice surface supports is adjusted by the spiral telescopic scale 6 to fix the sampler to the ice layer, forming a sampling working surface. Two foldable remote-controlled sampling frames 8 are provided between the lower ice surface support 7 and the support frame 9 below it, allowing for vertical height adjustment. The support frame 9 and the lower ice surface support 7 are connected to the two foldable remote-controlled sampling frames 8 via slots. This enables ice surface fixation, ice thickness measurement, adjustment of the sampling position, assembly of an immersion water sampling device, and a multi-parameter water quality change point monitoring system. The foldable remote-controlled sampling frame 8 includes an upper part 8-1, a lower part 8-2, an electric slider 8-3 with a through hole in the middle for the water inlet section 1-1 to pass through, a rotating shaft 8-4, and a fixing bolt 8-5. The upper part 8-1 and the lower part 8-2 are U-shaped structures with the same structure, and both ends are provided with mounting holes. Before collecting water samples, the U-shaped openings of the two sampling frames 8-1 and 8-2 are aligned, and one end is connected by the rotating shaft 8-4, and the other end is connected by the fixing bolt 8-5. Each of the two inner long sides of the upper part 8-1 and the lower part 8-2 of the foldable remote-controlled sampling frame has a slide rail, and the electric slider 8-3 can move on the slide rail. The electric slider 8-3 is powered by a battery inside the electric slider 8-3 through a motor gear drive, and its up and down movement is controlled by a smart remote control board 13, thereby adjusting the position of the inserted water pipe 1 and realizing the adjustment of the sampling position of the inserted water sampling device. The lower ice surface support 7 is close to the bottom of the ice layer. When the electric slider 8-3 moves to the top, its sampling position can reach the ice-water interface layer. The lower part of the foldable remote control sampling frame 8 is connected to the support frame 9 through a slot. Before collecting water samples, the water inlet section 1-1 of the insertable water pipe 1 is inserted into the through hole in the center of the electric slider 8-3 in the foldable remote control sampling frame 8, and the two are fixed by the slot. Furthermore, the bottom right end of the upper ice surface support 5 is connected to the spiral telescopic scale 6 by welding, and the bottom of the spiral telescopic scale 6 is connected to the lower ice surface support 7 by welding. The lower part of the lower ice surface support 7 is connected to two foldable remote control sampling frames 8 by slots, and the lower parts of both foldable remote control sampling frames 8 are connected to the support frame 9 by slots. The lower part of the lower ice surface support 7 is connected to two horizontally arranged foldable remote control sampling frames 8, and the lower parts of both foldable remote control sampling frames 8 are connected to the support frame 9 by slots.

[0010] Furthermore, the upper ice surface support 5 includes a long strip-shaped rotating rod 5-1, a fixed bracket 5-2, and a fixed pin 5-3; wherein the rotating rod 5-1 is embedded in the fixed bracket 5-2 and can rotate 180°, thereby optimizing the spatial shape of the sampler, reducing the size of the sampling port, and facilitating sampling; after the sampler enters the water, the rotating rod 5-1 is rotated to align it laterally with the fixed bracket 5-2, the fixed pin 5-3 is inserted into the small circular hole to fix the rotating rod 5-1, and the spiral telescopic scale 6 is adjusted according to the ice thickness. The upper ice surface support 5 and the lower ice surface support 7 together fix the sampler on the ice layer to form a sampling working surface; the spiral telescopic scale 6 is connected to the fixed bracket 5-2 of the upper ice surface support 5 by welding.

[0011] Furthermore, the spiral telescopic scale 6 includes a hollow scale sleeve 6-2, a scale screw rod 6-1 screwed into the scale sleeve 6-2, a handle 6-3 at the top of the scale screw rod 6-1, a bearing bush 6-4, and a ball bearing 6-5. The spiral telescopic scale 6 is divided into inner and outer sets of scale lines. The outer set of scale lines is printed on the scale sleeve 6-2, with a range of 0-50cm. To facilitate ice thickness measurement, there is a row of scale lines with a range of 0-50cm on each of the four symmetrical surfaces of the scale sleeve 6-2, preventing the scale lines from being rotated to an obstructed position during measurement. The inner set of scale lines is printed on the scale screw rod 6-1, with a range of 51-100cm. When ice thickness is measured... When the thickness exceeds 50cm, rotating the handle 6-3 clockwise will slowly raise the scale screw 6-1, exposing the inner scale lines. To prevent the scale lines from being rotated to an unobservable position during measurement, there is a row of scale lines with a range of 51-100cm on each of the four symmetrical surfaces of the scale screw 6-1. The upper end of the scale screw 6-1 is placed inside the bearing bush 6-4, and the lower part is filled with ball bearings 6-5 to prevent the upper ice surface support 5 from moving on the ice surface when adjusting the scale by rotating the handle 6-3. The scale rod sleeve 6-2 is connected to the lower ice surface support 7. When collecting water samples, the scale rod sleeve 6-2 bears the weight of the sampler. To prevent structural breakage due to stress, the two are connected by welding.

[0012] The multi-parameter water quality change point monitoring system includes an integrated box 10, a pressure sensor 11, a multi-parameter sensor 12, and an intelligent remote control board 13 to monitor various parameters of the subglacial water and control the overall operation of the data collector. The integrated box 10 is riveted to the junction of the foldable remote control sampling frame 8 and the support frame 9 near the water inlet. The pressure sensor 11 is attached to the integrated box 10 and mounted on the support frame 9. The multi-parameter sensor 12 is mounted in the slot of the electric slider 8-3 of the foldable remote control sampling frame 8. The intelligent remote control board 13 controls the entire data collector to achieve vertical dynamic adjustment, in-situ real-time water quality monitoring, and change point capture of subglacial stratified water samples.

[0013] Furthermore, the integrated box 10 includes a data processing unit 10-1, a battery 10-2, a transmission line A10-3, and a transmission line B10-4.

[0014] The intelligent remote control panel 13 consists of a power display area 13-1, a collector status display area 13-2, a stratified water body parameter display area 13-3, an intelligent remote control panel switch 13-4, a cursor up arrow key 13-5, a cursor down arrow key 13-6, a cursor confirm key 13-7, a slider reset key 13-8, a valve open key 13-9, and a valve key 13-10. The multi-parameter sensor 12 is fixed to the electric slider 8-3 via a slot and can monitor the temperature and dissolved oxygen at the corresponding sampling depth as the electric slider 8-3 moves. The conductivity data is collected and transmitted to the data processing unit 10-1 via transmission line A10-3; the pressure sensor 11 is used to measure water depth and transmits the information to the data processing unit 10-1 via transmission line B10-4; the data processing unit 10-1 analyzes the multi-parameter water quality data monitored by the multi-parameter sensor 12, calculates the rate of change of each parameter, and considers the existence of a water quality change point when the rate of change is greater than the set value, and determines the change point range in conjunction with the pressure sensor 11; the data processing unit 10-1 processes the multi-parameter data... Water quality information, change point information, and change point range are transmitted to the intelligent remote control board 13, which controls the intelligent remote control board 13 to update the running trajectory of the electric slider 8-3, thereby increasing the density of stratified sample collection. A short press of the intelligent remote control board switch 13-4 controls the intelligent remote control board 13 to turn on and off. A long press of the intelligent remote control board switch 13-4 causes the electric slider 8-3 on the foldable remote control sampling frame 8 to slowly move the inserted water pipe 1 and the multi-parameter sensor 12 from top to bottom to monitor environmental parameters. The cursor can be moved using the up arrow key 13-5 and the down arrow key 13-6. The cursor in the dynamic stratified water parameter display area 13-3 is used to collect samples by pressing the cursor confirmation key 13-7, based on the sampling target and the abrupt change points obtained from multi-parameter water quality monitoring, and the set sampling position. The valve opening key 13-9 and valve key 13-10 control the opening and closing of the electronic valve 1-3 in the extended water pipe 1. The slider reset key 13-8 controls the electric slider 8-3 to move to the top of the inner frame of the folding remote control sampling frame 8. The left side of the power display area 13-1 represents the power of the integrated box, and the right side represents the power of the intelligent remote control board.

[0015] The specific implementation steps of a dynamically adjustable subglacial stratified water sampler for water sampling are as follows:

[0016] Step 1: After arriving at the site, assemble the data acquisition device.

[0017] After assembling the electric slider 8-3, rotate the upper part 8-1 of the foldable remote sampling frame via the rotating shaft 8-4 until it aligns and fits with the lower part 8-2 of the foldable remote sampling frame. Tighten the fixing bolts 8-5 to transform the foldable remote sampling frame 8 from its folded state to its sampling state. Open the intelligent remote control board 13 and move the electric slider 8-3 up and down one revolution in the slide rail to verify the functionality of the electric slider 8-3. Insert the top and bottom ends of the foldable remote sampling frame 8 into the slots of the lower ice surface bracket 7 and the support frame 9 for installation. Insert the outlet section 1-2 vertically upwards into the peristaltic pump hose 2, and insert the inlet section 1-1 horizontally into the electric slider 8-3 to its end. Assemble the multi-parameter sensor 12 and the pressure sensor 11 into the slots of the electric slider 8-3 and the support frame 9 of the foldable remote sampling frame 8, respectively. Finally, insert the transmission line A10-3 into the end of the multi-parameter sensor 12 and the transmission line B10-4 into the end of the pressure sensor 11 to complete the assembly of the data collector.

[0018] Step 2: After breaking the ice, fix the collector to the ice layer.

[0019] By visually rotating the handle 6-3 of the spiral telescopic scale 6 to the appropriate range, rotate the rotating rod 5-1 of the upper ice surface support 5 to 90° and hold the rotating rod 5-1 in your hand. After vertically lifting the collector, place it in the water and keep the lower ice surface support 7 in contact with the bottom of the ice layer. Then move the collector until the submersible water pipe 1 is completely under the ice. Then hold the handle 6-3 to prevent the collector from sinking underwater. Rotate the rotating rod 5-1 to 0° to align it horizontally with the fixed bracket 5-2, and insert the fixing pin 5-3 into the fixed bracket 5-2. Release both hands. At this time, the rotating rod 5-1 is horizontally in contact with the upper ice surface. Then, rotate the handle 6-3 counterclockwise to make the scale spiral rod 6-1 completely screwed into the scale rod sleeve 6-2. With the lower ice surface support 7, fix the collector in the ice layer and measure the ice thickness.

[0020] Step 3: Monitor the stratification of water under ice, collect various water quality parameters, and analyze water quality change points.

[0021] The electric slider 8-3 drives the submersible water pipe 1 to move slowly from top to bottom under the transmission of the pulley. The multi-parameter sensor 12 continuously monitors various parameters of the water body. The integrated box 10 transmits the multiple water quality parameters and change point monitoring information monitored in situ to the intelligent remote control board 13, providing a basis for stratified water sample collection.

[0022] Step 4: Collect subglacial water samples.

[0023] Combining variable point monitoring and sampling targets, the water depth for stratified water sampling is set. The electric slider 8-3 is moved to the sampling point position. After the stratified water bodies stabilize, the electronic valve 1-3 and peristaltic pump 3 are opened. Before collecting each water layer, water is continuously pumped to the outside for 1 minute to ensure that the water sampled from the insertion pipe 1 is from the desired stratified water body. The peristaltic pump hose 2 is inserted into the sampling bottle 4, and the water sample is slowly drawn into the sampling bottle 4, allowing the water sample to overflow to one-fifth of the bottle's volume. The sampling bottle 4 is then quickly sealed. At this point, the single-layer water sample collection is complete. To minimize disturbance during sample collection, the sampling method is followed sequentially from the surface ice-water interface layer to the bottom layer.

[0024] Step 5: Remove the collector and complete the encapsulation.

[0025] Close electronic valve 1-3 and allow electric slider 8-3 to automatically move to its initial position. Remove the fixing pin 5-3 from the upper ice surface support 5, move the sampler's insertable water pipe 1 from below the ice to below the water surface, then rotate the lever 5-1 to 90° to pull the entire sampler out of the water. Remove the multi-parameter sensor 12 and pressure sensor 11 from the slots of the electric slider 8-3 and support frame 9 of the foldable remote-controlled sampling frame 8, respectively. Separate the insertable water pipe 1 from the foldable remote-controlled sampling frame 8. Remove both ends of the foldable remote-controlled sampling frame 8 from the slots of the lower ice surface support 7 and support frame 9. Unscrew the fixing bolt 8-5 on the foldable remote-controlled sampling frame 8, fold the foldable remote-controlled sampling frame 8, and remove the electric slider 8-3 from the inside of the foldable remote-controlled sampling frame 8 along the slide rail, completing the sampler's encapsulation. Sampling is now complete.

[0026] The beneficial effects of this invention are as follows: This invention enables accurate collection of stratified water bodies within a 1m range under ice with low environmental impact, and features low environmental impact, vertical dynamic adjustment, in-situ real-time water quality monitoring, and variable point capture function. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall underwater structure of a dynamically adjustable subglacial stratified water sampler.

[0028] In the diagram: 1. Insertable water pipe; 2. Peristaltic pump hose; 3. Peristaltic pump; 4. Sampling bottle; 5. Upper ice surface support; 6. Spiral telescopic scale; 7. Lower ice surface support; 8. Folding remote control sampling frame; 9. Support frame; 10. Integrated box; 11. Pressure sensor; 12. Multi-parameter sensor; 13. Intelligent remote control board.

[0029] Figure 2 This is a schematic diagram of an immersion-type water intake device;

[0030] Figure 3 This is a schematic diagram of a dynamic adjustment mechanism in an icy environment;

[0031] Figure 4 This is a schematic diagram of a multi-parameter water quality change point monitoring system;

[0032] Figure 5 This is a schematic diagram of the structure of an insert water pipe;

[0033] In the diagram: 1-1 Inlet section; 1-2 Outlet section; 1-3 Electronic valve;

[0034] Figure 6 This is a schematic diagram of the structure of the support frame on the ice surface;

[0035] In the diagram: 5-1 Rotating rod; 5-2 Fixed bracket; 5-3 Fixed pin;

[0036] Figure 7 This is a schematic diagram of the structure of a spiral telescopic ruler;

[0037] In the diagram: 6-1 graduated screw rod; 6-2 graduated rod sleeve; 6-3 handle; 6-4 bearing bush; 6-5 ball bearing;

[0038] Figure 8 This is a structural diagram of a foldable remote-controlled sampling frame;

[0039] In the diagram: 8-1 Upper part of the folding remote control sampling frame; 8-2 Lower part of the folding remote control sampling frame; 8-3 Electric slider; 8-4 Rotating shaft; 8-5 Fixing bolt;

[0040] Figure 9 This is a structural diagram of the integrated box;

[0041] In the diagram: 10-1 Data processing unit; 10-2 Battery; 10-3 Transmission line A; 10-4 Transmission line B;

[0042] Figure 10 This is a structural diagram of the smart remote control panel;

[0043] In the diagram: 13-1 Power display area; 13-2 Collector status display area; 13-3 Layered water body parameter display area; 13-4 Smart remote control switch; 13-5 Cursor up arrow key; 13-6 Cursor down arrow key; 13-7 Cursor confirm key; 13-8 Slider reset key; 13-9 Valve open key; 13-10 Valve key. Detailed Implementation

[0044] The specific embodiments of the present invention are described in detail below with reference to the technical solution (and accompanying drawings).

[0045] A dynamically adjustable subglacial stratified water sampler mainly consists of three parts: an immersion-type water sampling device, a dynamic adjustment mechanism for ice-covered environments, and a multi-parameter water quality change point monitoring system, as detailed below:

[0046] The aforementioned extended water sampling device consists of an extended water pipe 1, a peristaltic pump hose 2, a peristaltic pump 3, and a sampling bottle 4. The extended water pipe 1 is divided into an inlet section 1-1 and an outlet section 1-2. An electronic valve 1-3 is installed 10 centimeters to the left of the junction of the inlet section 1-1 and the outlet section 1-2. The inlet section 1-1 is an extended design, extending 0.5 meters inward along the sampling port, effectively reducing the environmental impact around the sampling port. For example, after ice breaks at the sampling port, dissolved oxygen on the water surface comes into contact with the atmosphere, changing the dissolved oxygen concentration at the surface, especially at the ice-water interface. The water pipe 1 is horizontally fixed in the dynamic adjustment mechanism in the frozen environment through the inlet section 1-1, and the electric slider 8-3 is used to realize the function of vertical adjustment in the water body, so as to realize the dynamic adjustment of the inlet and the stratified sample collection. When collecting water samples, the outlet section 1-2 is fixedly vertically connected to the inlet section 1-1 to provide a stable hydraulic environment, and is connected to the peristaltic pump 3 through the peristaltic pump hose 2. The peristaltic pump 3 slowly draws out the water sample and injects it into the sampling bottle 4, and the overflow method is used for control to minimize the influence of the external environment on the sampling process.

[0047] The dynamic adjustment mechanism in the frozen environment consists of an upper ice surface support 5, a spiral telescopic scale 6, a lower ice surface support 7, a foldable remote-controlled sampling frame 8, and a support frame 9. The upper ice surface support 5 is welded to the spiral telescopic scale 6 at its lower end, and the spiral telescopic scale 6 is welded to the lower ice surface support 7 at its lower end. The lower ice surface support 7 is connected to two foldable remote-controlled sampling frames 8 via slots at its lower end, and both foldable remote-controlled sampling frames 8 are connected to the support frame 9 via slots at their lower ends. This mechanism enables ice surface fixation, ice thickness measurement, adjustment of sampling position, assembly of an immersion water sampling device, and a multi-parameter water quality change point monitoring system. The upper ice surface support 5 consists of a rotating rod 5-1 and a fixed bracket 5- 2. The sampler consists of a fixed pin 5-3; the rotating rod 5-1 is embedded in the fixed bracket 5-2 and can rotate 180°, thereby optimizing the spatial shape of the sampler, reducing the size of the sampling port, and facilitating sampling; after the sampler enters the water, the rotating rod 5-1 is rotated to align with the fixed bracket 5-2 laterally, and the fixed pin 5-3 is inserted into the small circular hole to fix the rotating rod 5-1. Together with the lower ice surface support 7, the sampler is fixed to the ice layer, forming a sampling working surface; the upper ice surface support 5 is connected to the fixed bracket 5-2 below the spiral telescopic scale 6 by welding; the spiral telescopic scale 6 consists of a scale spiral rod 6-1, a scale rod sleeve 6-2, a handle 6-3, a bearing bush 6-4, and a ball bearing 6-5; the spiral... The telescopic ruler 6 has two sets of graduation lines: an outer set printed on the graduation sleeve 6-2, with a range of 0-50cm. To facilitate ice thickness measurement, each of the four symmetrical faces of the graduation sleeve 6-2 has a row of graduation lines with a range of 0-50cm, preventing the graduation lines from being rotated to an obscure position during measurement. The inner set of graduation lines is printed on the graduation screw 6-1, with a range of 51-100cm. When the ice thickness exceeds 50cm, rotating the handle 6-3 clockwise will slowly raise the graduation screw 6-1, revealing the inner set of graduation lines. To prevent the graduation lines from being rotated to an obscure position during measurement, each of the four symmetrical faces of the graduation screw 6-1 has a row of graduation lines with a range of 51-100cm. The scale has a 100cm range; the upper end of the scale screw rod 6-1 is placed inside the bearing bush 6-4, and the lower part is filled with ball bearings 6-5 to prevent the upper ice surface support 5 from moving on the ice surface when the handle 6-3 is rotated to adjust the scale; the lower part of the scale rod sleeve 6-2 is connected to the lower ice surface support 7. When collecting water samples, the scale rod sleeve 6-2 bears the weight of the sampler. To avoid structural breakage due to stress, the two are connected by welding; the lower ice surface support 7 is connected to two folding remote control sampling frames 8 through a slot; the folding remote control sampling frame 8 consists of an upper part 8-1, a lower part 8-2, an electric slider 8-3, a rotating shaft 8-4, and fixing bolts 8-5;The upper part 8-1 and the lower part 8-2 of the foldable remote-controlled sampling frame are connected by a rotating shaft 8-4 on the right side. Before collecting water samples, the upper part 8-1 and the lower part 8-2 of the foldable remote-controlled sampling frame need to be aligned. The upper and lower parts of the foldable remote-controlled sampling frame 8 are fixed by tightening the screws of the fixing bolts 8-5 on the left side. There is a slide rail on each of the two inner long sides of the foldable remote-controlled sampling frame 8. There is a row of motor gear-driven pulleys on each side of the electric slider 8-3. Powered by the battery inside the electric slider 8-3, the electric slider 8-3 moves up and down in the slide rail under the control and adjustment of the intelligent remote control board 13, so as to adjust the sampling position of the immersion water sampling device. The surface support 7 is close to the bottom of the ice layer. When the electric slider 8-3 moves to the top, its sampling position can reach the ice-water interface layer. The foldable remote sampling frame 8 is connected to the support frame 9 through a slot. Before collecting water samples, the inlet section 1-1 of the insertable water pipe 1 is inserted into the through hole in the center of the electric slider 8-3 in the foldable remote sampling frame 8, and the two are fixed by the slot. The integrated box 10 in the multi-parameter water quality change point monitoring system is riveted to the intersection of the left side of the foldable remote sampling frame 8 and the support frame 9 near the water inlet. The pressure sensor 11 is close to the integrated box 10 and is installed on the left side of the support frame 9. The multi-parameter sensor 12 is installed in the slot of the electric slider 8-3 of the foldable remote sampling frame 8.

[0048] The multi-parameter water quality change point monitoring system consists of an integrated box 10, a pressure sensor 11, a multi-parameter sensor 12, and a smart remote control board 13; it is designed to monitor various parameters of the water body under ice and control the overall operation of the data acquisition unit. The integrated box 10 comprises a data processing unit 10-1, a battery 10-2, transmission line A10-3, and transmission line B10-4. The smart remote control board 13 includes a power display area 13-1, a data acquisition unit status display area 13-2, a stratified water body parameter display area 13-3, a smart remote control switch 13-4, an up arrow key 13-5, a down arrow key 13-6, and a cursor confirmation button. The system consists of key 13-7, slider reset key 13-8, valve opening key 13-9, and valve key 13-10; a multi-parameter sensor 12 is fixed to the electric slider 8-3 via a slot, and monitors temperature, dissolved oxygen, and conductivity at the corresponding sampling depth as the electric slider 8-3 moves. The collected data is transmitted to the data processing unit 10-1 via transmission line A10-3; a pressure sensor 11 is used to determine water depth, and transmits the information to the data processing unit 10-1 via transmission line B10-4; the data processing unit 10-1 analyzes the monitored multi-parameter water quality data, calculates the rate of change of each parameter, and when... When the rate of change exceeds the set value, a water quality change point is considered to exist, and the change point range is determined in conjunction with the pressure sensor 11. The data processing unit 10-1 transmits the processed multi-parameter water quality information, change point information, and change point range to the intelligent remote control board 13, controlling the intelligent remote control board 13 to update the running trajectory of the electric slider 8-3, thereby increasing the density of stratified sample collection. A short press of the intelligent remote control board switch 13-4 controls the opening and closing of the intelligent remote control board 13. A long press of the intelligent remote control board switch 13-4 causes the electric slider 8-3 on the foldable remote control sampling frame 8 to slowly move the inserted water pipe 1 and the multi-parameter sensor 12 from top to bottom to monitor the water quality. Environmental parameters; use the up arrow key 13-5 and the down arrow key 13-6 to move the cursor in the stratified water parameter display area 13-3. Based on the sampling target and the abrupt change points obtained from multi-parameter water quality monitoring, set the sampling position and press the cursor confirmation key 13-7 to collect the sample; the valve open key 13-9 and valve key 13-10 control the opening and closing of the electronic valve 1-3 in the extended water pipe 1; the slider reset key 13-8 controls the electric slider 8-3 to move to the top of the inner frame of the folding remote control sampling frame 8; the left side of the power display area 13-1 represents the power of the integrated box, and the right side represents the power of the intelligent remote control board.

[0049] The specific implementation steps of a dynamically adjustable subglacial stratified water sampler for water sampling are as follows:

[0050] Step 1: Upon arrival at the site, assemble the data collector. Align the pulley of the electric slider 8-3 with the upper guide rail 8-1 of the folding remote sampling frame to complete the assembly of the electric slider 8-3. Then, rotate the upper part 8-1 of the folding remote sampling frame via the rotating shaft 8-4 until it aligns and fits snugly with the lower part 8-2 of the folding remote sampling frame. Tighten the fixing bolts 8-5 to transform the folding remote sampling frame 8 from its folded state to its sampling state. Lightly press the intelligent remote control switch 13-4 to turn on the intelligent remote control 13, then press and hold the intelligent remote control switch 13-4 to move the electric slider 8-3 up and down one full turn in the slide rail to verify the functionality of the electric slider 8-3. Insert the top and bottom ends of the folding remote sampling frame 8 into the slots of the lower ice surface bracket 7 and the support frame 9 respectively for installation. Insert the outlet section 1-2 pipe vertically upwards and insert the peristaltic pump hose 2. Insert the inlet section 1-1 horizontally into the electric slider 8-3 to its end. Assemble the multi-parameter sensor 12 and the pressure sensor 11 into the slots of the electric slider 8-3 and the support frame 9 of the foldable remote sampling frame 8, respectively. Then insert the transmission line A10-3 into the end of the multi-parameter sensor 12 and the transmission line B10-4 into the end of the pressure sensor 11 to complete the assembly of the data collector.

[0051] Step 2: After breaking the ice, fix the collector to the ice layer. Visually rotate the handle 6-3 of the spiral telescopic scale 6 clockwise to the appropriate range. Rotate the rotating rod 5-1 of the upper ice surface support 5 to 90° and hold the rotating rod 5-1 in your hand. Lift the collector vertically and place it in the water, keeping the lower ice surface support 7 in contact with the bottom of the ice layer. Then move the collector until the submersible water pipe 1 is completely under the ice. Hold the handle 6-3 to prevent the collector from sinking. Rotate the rotating rod 5-1 to 0° to align it horizontally with the fixing slot 5-2, and insert the fixing pin 5-3 into the fixing slot 5-2. Release both hands. At this time, the rotating rod 5-1 is horizontally in contact with the upper ice surface. Then, rotate the handle 6-3 counterclockwise to make the scale spiral rod 6-1 completely screwed into the scale rod sleeve 6-2. With the lower ice surface support 7, fix the collector to the ice layer and measure the ice thickness.

[0052] Step 3: Monitor the stratification of water under ice, collect various water quality parameters, and analyze water quality change points. Press and hold the smart remote control switch 13-4. The electric slider 8-3, driven by the pulley, slowly moves the submersible water pipe 1 from top to bottom. The multi-parameter sensor 12 will continuously monitor various water parameters. The in-situ monitored multiple water quality parameters and change point monitoring information are transmitted to the smart remote control 13 through the integrated box 10, providing a basis for stratified water sample collection.

[0053] Step 4: Collect subglacial stratified water samples. Based on the variable point monitoring and sampling target, set the water depth for stratified water sample collection. Press the up arrow key 13-5 and the down arrow key 13-6 to move the cursor in the stratified water parameter display area 13-3 to select the sampling point. Press the confirm key 13-7, and the electric slider 8-3 will move to the sampling point position. Wait five minutes until the stratified water stabilizes. Press the valve open key 13-9 to open the electronic valve 1-3, then turn on the peristaltic pump 3. Before collecting each layer of water, continuously pump water to the outside for 1 minute to ensure that the water sampled from the insertion tube 1 is from the desired stratified water. Insert the peristaltic pump hose 2 into the sampling bottle 4, and slowly pump the water sample into the sampling bottle 4, allowing the water sample to overflow to one-fifth of the sampling bottle 4's volume. Quickly seal the sampling bottle 4; at this point, the single-layer water sample collection is complete. To minimize disturbance during sample collection, follow the sampling method from the surface layer (ice-water interface layer) to the bottom layer sequentially.

[0054] Step 5: Remove the sampler and complete the packaging. Press valve key 13-10 to close electronic valve 1-3. Press slider reset button 13-8 to automatically move electric slider 8-3 to its initial position. Grip handle 6-3 firmly, pull out fixing pin 5-3 of upper ice surface bracket 5, move the sampler's insertable water pipe 1 from below the ice layer to below the water surface, then rotate lever 5-1 to 90° to pull the entire sampler out of the water. Remove multi-parameter sensor 12 and pressure sensor 11 from the slots of electric slider 8-3 and support frame 9 of foldable remote sampling frame 8. Separate insertable water pipe 1 from foldable remote sampling frame 8. Remove both ends of foldable remote sampling frame 8 from the slots of lower ice surface bracket 7 and support frame 9. Unscrew fixing bolt 8-5 on foldable remote sampling frame 8, fold foldable remote sampling frame 8, and remove electric slider 8-3 from the inside of foldable remote sampling frame 8 along the slide rail to complete the sampler packaging. Sampling is now complete.

[0055] The above-described embodiments are merely illustrative of the implementation methods of the present invention, but should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A dynamically adjusted under-ice stratified water body sampler, comprising: The collector comprises a water taking device, a dynamic adjusting mechanism in ice sealing environment and a multi-parameter water quality variable point monitoring system. The water taking device comprises a water pipe (1), a peristaltic pump hose (2), a peristaltic pump (3) and a sampling bottle (4); the water pipe (1) comprises a water inlet section (1-1) and a water outlet section (1-2) and is in a T-shaped structure; the water inlet section (1-1) is designed to be inserted into the dynamic adjusting mechanism and is vertically adjusted in the water body by using an electric sliding block (8-3) to realize dynamic adjustment of the water inlet and layered sample collection; the water outlet section (1-2) is communicated with the sampling bottle (4) through the peristaltic pump hose (2), and the peristaltic pump (3) is arranged on the peristaltic pump hose (2); during water sample collection, the water outlet section (1-2) is fixedly connected with the water inlet section (1-1) in a vertical direction, and the water sample is slowly pumped out by the peristaltic pump (3) and then injected into the sampling bottle (4) by using an overflow method; The dynamic adjusting mechanism in ice sealing environment comprises an upper ice surface support (5), a spiral telescopic scale (6), a lower ice surface support (7), a folding remote control sampling frame (8) and a support frame (9); the spiral telescopic scale (6) is arranged between the upper ice surface support (5) and the lower ice surface support (7) at one end thereof, the height between the ice surface supports is adjusted by the spiral telescopic scale (6), and the collector is fixed on the ice layer to form a sampling working surface; two folding remote control sampling frames (8) are arranged between the lower ice surface support (7) and the support frame (9) below the lower ice surface support (7) to adjust the vertical height; the ice surface is fixed, the ice thickness is measured, the sampling position is adjusted, the water taking device is assembled and the multi-parameter water quality variable point monitoring system is assembled; The multi-parameter water quality variable point monitoring system comprises an integrated box (10), a pressure sensor (11), a multi-parameter sensor (12) and an intelligent remote control board (13) to monitor various parameters of the water body under the ice and control the overall cooperation of the collector; the integrated box (10) is assembled at the intersection of the folding remote control sampling frame (8) and the support frame (9) near the water inlet; the pressure sensor (11) is close to the integrated box (10) and is assembled on the support frame (9); the multi-parameter sensor (12) is assembled in a clamping groove of the electric sliding block (8-3) of the folding remote control sampling frame (8) and can monitor the temperature, dissolved oxygen and conductivity at the corresponding collection depth along with the movement of the electric sliding block (8-3) and transmit the collected data to the integrated box (10); the overall collector is controlled by the intelligent remote control board (13) to realize the functions of the vertically dynamically adjusted, in-situ real-time water quality monitored and variable point captured layered water body sample under the ice.

2. A dynamically adjusted ice-tethered subsurface stratified water sampler according to claim 1, wherein, The upper ice surface support (5) comprises a long strip-shaped rotating rod (5-1), a fixed bracket (5-2) and a fixed bolt (5-3); the rotating rod (5-1) is embedded in the fixed bracket (5-2) and can rotate by 180 degrees, so that the spatial form of the sampler can be optimized and the size of the sampling port can be reduced; after the collector enters water, the rotating rod (5-1) is rotated to be transversely aligned with the fixed bracket (5-2), the fixed bolt (5-3) is inserted into a circular hole to fix the rotating rod (5-1), and a screw telescopic scale (6) is adjusted according to the ice thickness; the upper ice surface support (5) and the lower ice surface support (7) together fix the collector on the ice layer to form a sampling working surface; the fixed bracket (5-2) of the upper ice surface support (5) is connected with the screw telescopic scale (6) in the form of welding.

3. A dynamically adjusted ice-tethered subsurface stratified water sampler according to claim 1, wherein, The screw telescopic scale (6) comprises a hollow scale rod sleeve (6-2), a scale screw rod (6-1) screwed into the scale rod sleeve (6-2), a handle (6-3) at the top of the scale screw rod (6-1) and a bearing bush (6-4); the screw telescopic scale (6) is divided into two groups of scale lines, the outer scale lines are printed on the scale rod sleeve (6-2) and the range is 0-50 cm, and the inner scale lines are printed on the scale screw rod (6-1) and the range is 51-100 cm; when the ice thickness exceeds 50 cm, the scale screw rod (6-1) can be slowly lifted by rotating the handle (6-3) clockwise to expose the inner scale lines; the upper end of the scale screw rod (6-1) is placed in the bearing bush (6-4) to avoid the movement of the upper ice surface support (5) on the ice surface when the scale is adjusted by rotating the handle (6-3); the scale rod sleeve (6-2) is connected with the lower ice surface support (7) below, and the scale rod sleeve (6-2) bears the weight of the collector when water samples are collected.

4. A dynamically adjusted ice-tethered subsurface stratified water sampler according to claim 1, wherein, The folding remote control sampling frame (8) comprises a folding remote control sampling frame upper part (8-1), a folding remote control sampling frame lower part (8-2), a middle electric sliding block (8-3) with a through hole, a rotating shaft (8-4), and a fixing bolt (8-5); the folding remote control sampling frame upper part (8-1) and the folding remote control sampling frame lower part (8-2) are U-shaped structures with the same structure, and both ends are provided with mounting holes; before collecting water samples, the U-shaped openings of the folding remote control sampling frame upper part (8-1) and the folding remote control sampling frame lower part (8-2) are aligned, one end is connected through the rotating shaft (8-4), and the other end is connected through the fixing bolt (8-5); the folding remote control sampling frame upper part (8-1) and the folding remote control sampling frame lower part (8-2) are each provided with a sliding rail on the two inner long edges, and the electric sliding block (8-3) can move on the sliding rail; the electric sliding block (8-3) is driven by a motor gear, is powered by a battery in the electric sliding block (8-3), and is controlled to move up and down through the intelligent remote control board (13), so as to adjust the position of the extended water pipe (1) and realize the adjustment of the sampling position of the extended water taking device; the lower ice surface support (7) is close to the bottom of the ice layer, and when the electric sliding block (8-3) moves to the uppermost position, the collection position can reach the ice-water interface layer; the folding remote control sampling frame (8) is connected with the support frame (9) below through a clamping groove.

5. A dynamically adjusted ice-beneath stratified water body sampler according to claim 1, wherein, The upper ice surface support (5) is connected with the spiral telescopic scale (6) at the bottom in a welding manner, and the spiral telescopic scale (6) is connected with the lower ice surface support (7) in a welding manner; the lower ice surface support (7) is connected with the two folding remote control sampling frames (8) below in a clamping groove form, and the two folding remote control sampling frames (8) are connected with the support frame (9) below in a clamping groove form.

6. A dynamically adjusted ice-nibbling stratified water sampler according to claim 1, wherein, The integrated box (10) comprises a data processing unit (10-1), a battery (10-2), a transmission line A (10-3), and a transmission line B (10-4); the multi-parameter sensor (12) collects data and transmits information to the data processing unit (10-1) through the transmission line A (10-3), and the pressure sensor (11) is used to measure the water depth and transmits information to the data processing unit (10-1) through the transmission line B (10-4); the data processing unit (10-1) analyzes the multi-parameter water quality data monitored by the multi-parameter sensor (12), calculates the change rate of each parameter, and when the change rate is greater than the set value, it is considered that there is a water quality change point, and the change point interval is determined in combination with the pressure sensor (11); the data processing unit (10-1) transmits the processed multi-parameter water quality information, change point information, and change point interval to the intelligent remote control board (13), controls the intelligent remote control board (13), updates the running track of the electric sliding block (8-3), and thus encrypts the layered sample collection.

7. A method of using a dynamically adjusted ice-underlying stratified water body sampler according to any one of claims 1-6, characterized in that, The method comprises the following steps: Step 1: after arriving at the scene, assemble the collector; After the assembly of the electric slider (8-3), the upper part of the folding remote control sampling frame (8-1) is rotated to align with the lower part of the folding remote control sampling frame (8-2) through the rotating shaft (8-4), and the fixing bolt (8-5) is tightened to convert the folding remote control sampling frame (8) from the folding mode to the sampling mode; the intelligent remote control board (13) is opened, the electric slider (8-3) is moved up and down in the slide rail for one round, and the function of the electric slider (8-3) is checked; the top and tail ends of the folding remote control sampling frame (8) are inserted into the clamping grooves of the lower ice surface support (7) and the support frame (9) for installation; the outlet section (1-2) pipe is vertically upward and inserted into the peristaltic pump hose (2), the inlet section (1-1) is transversely inserted into the electric slider (8-3) to the end thereof, the multi-parameter sensor (12) and the pressure sensor (11) are respectively assembled at the electric slider (8-3) of the folding remote control sampling frame (8) and the clamping groove of the support frame (9), and finally the transmission line A (10-3) is inserted into the end of the multi-parameter sensor (12) and the transmission line B (10-4) is inserted into the end of the pressure sensor (11), completing the assembly of the collector; Step 2: After breaking the ice, fix the collector with the ice layer; By rotating the handle (6-3) of the spiral telescopic scale ruler (6) to an appropriate range by visual method, rotating the rotating rod (5-1) of the upper ice surface support (5) to 90° and holding the rotating rod (5-1) in hand, vertically lifting the collector and putting it into the water while keeping the lower ice surface support (7) in contact with the bottom of the ice layer, then moving the collector to the fully submerged water pipe (1), then holding the handle (6-3) to prevent the collector from sinking into the water, rotating the rotating rod (5-1) to 0° to make it horizontally aligned with the fixed slot (5-2), and inserting the fixed pin (5-3) into the fixed slot (5-2), then releasing the hands, at this time the rotating rod (5-1) is horizontally attached to the upper ice surface, then counterclockwise rotating the handle (6-3) to make the scale spiral rod (6-1) completely rotate into the scale rod sleeve (6-2), cooperating with the lower ice surface support (7), fixing the collector on the ice layer, and measuring the ice thickness; Step 3: Monitor the stratification of water body under ice, collect various water quality parameters, and analyze water quality change points; The electric slider (8-3) drives the submerged water pipe (1) to move slowly from top to bottom under the transmission of the pulley, the multi-parameter sensor (12) continuously monitors various parameters of the water body, and the integrated box (10) transmits the in-situ monitored multiple water quality parameters and change point monitoring information to the intelligent remote control board (13), providing basis for stratified water sample collection; Step 4: Collect stratified water sample under ice; Combined with the monitoring of the change point and the sampling target, the water depth for collecting the stratified water sample is set, the electric sliding block (8-3) is moved to the sampling point position to wait for the stability of the stratified water body, the electronic valve (1-3) and the peristaltic pump (3) are opened, 1 min of water is continuously pumped outside before collecting each layer of water body to ensure that the water sucked in the stretch-in water pipe (1) is the required stratified water body, the peristaltic pump hose (2) is inserted into the sampling bottle (4), the water sample is slowly pumped into the sampling bottle (4), and the water sample is overflowed by one-fifth of the volume of the sampling bottle (4), and the sampling bottle (4) is quickly sealed, at this time, the single-layer water body sample collection is completed; In order to reduce disturbance during sample collection, the collection mode from the surface layer to the bottom layer is sequentially performed; Step 5: remove the collector and complete the packaging; Close the electronic valve (1-3), and move the electric sliding block (8-3) to the initial position; pull out the fixed pin (5-3) of the upper ice surface support (5), move the stretch-in water pipe (1) of the collector from below the ice layer to below the water surface, then turn the rotating rod (5-1) to 90°, and pull out the collector from the water surface; remove the multi-parameter sensor (12) and the pressure sensor (11) from the electric sliding block (8-3) of the folding remote control sampling frame (8) and the clamping groove of the support frame (9) respectively; separate the stretch-in water pipe (1) from the folding remote control sampling frame (8); remove the two ends of the folding remote control sampling frame (8) from the clamping grooves of the lower ice surface support (7) and the support frame (9); open the fixing bolt (8-5) on the folding remote control sampling frame (8), fold the folding remote control sampling frame (8), remove the electric sliding block (8-3) from the inside of the folding remote control sampling frame (8) along the sliding rail, and complete the packaging of the collector; at this time, the sampling is completed.

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