Fabricated under-ice water taking method and device suitable for South Pole

Abstract

The invention belongs to the technical field of polar region living guarantee facilities, and discloses an assembly type under-ice water taking method and device suitable for the south pole. The assembly type under-ice water taking method suitable for the South Pole comprises the following steps that S1, a water taking pump and a backwash pump are arranged in a heat preservation box body, a water taking opening of the water taking pump is connected with a water taking pipeline, and a water outlet of the water taking pump is connected with a water using pipe; a water intake of the backwash pump is connected with the backwash water tank, a water outlet of the backwash pump is connected with a water intake pipeline, and a water pipe is connected with the backwash water tank and the water storage tank; s2, opening a water taking pump to take water from the ground surface or underground, injecting water into a backwashing water tank and / or a water storage tank, and closing the water taking pump after the backwashing water tank and / or the water storage tank are / is full of water; and S3, opening the backwashing pump, and reversely pressing water in the backwashing water tank into the water taking pipeline to wash the water taking pipeline. Dry operation can be carried out in the South Pole low-temperature severe environment, and the equipment system automatically, safely and stably runs for a long time and is convenient to maintain.

Description

Technical Field

[0001] This invention relates to the field of polar life support facilities technology, and in particular to a prefabricated method and apparatus for extracting water under ice suitable for Antarctica. Background Technology

[0002] With the rapid development of my country's Antarctic expeditions and the increasing demands for Antarctic support, the demand and quality of seawater for desalination are constantly improving. Antarctic seawater intake systems are used frequently, especially for sub-ice water intake during winter. A stable and reliable sub-ice water intake system is a prerequisite for the normal operation of seawater desalination and a guarantee of both the quantity and quality of desalinated water. Currently, Antarctic seawater intake primarily uses submersible pumps with stainless steel pipes. However, submersible pumps are significantly affected by temperature, sea ice, marine life, and power supply safety, frequently experiencing issues such as icing, power outages, pipe ruptures, and high risks to personnel operation. This results in significant inconvenience for users during maintenance and a short period of safe and stable operation. Summary of the Invention

[0003] The purpose of this invention is to provide a prefabricated method and device for water extraction under ice in Antarctica, which enables dry operation in the harsh low-temperature environment of Antarctica, automatic long-term safe and stable operation of the equipment system, and facilitates equipment maintenance.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A prefabricated subglacial water extraction method suitable for Antarctica includes the following steps:

[0006] S1, a water intake pump and a backwash pump are installed inside the insulated box. The water intake port of the water intake pump is connected to a water intake pipe, and the water outlet of the water intake pump is connected to a water supply pipe. The water intake port of the backwash pump is connected to a backwash water tank, and the water outlet of the backwash pump is connected to the water intake pipe. The water supply pipe is connected to the backwash water tank and the storage tank.

[0007] S2, turn on the water pump to draw water from the surface or underground and fill the backwash water tank and / or the storage tank with water; turn off the water pump after the backwash water tank and / or the storage tank are full.

[0008] S3, the backwash pump is turned on, and the water in the backwash water tank is forced back into the water intake pipe to flush the water intake pipe; the working pressure of the backwash pump is greater than the water pressure in the water intake pipe.

[0009] In some embodiments, multiple water pumps are provided, and in step S2, the multiple water pumps automatically switch to alternately extract water.

[0010] In some embodiments, the plurality of water intake pumps include a plurality of first-type pumps for surface water intake and a plurality of second-type pumps for underground water intake. The water intake pipeline includes a surface water intake pipeline and an underground water intake pipeline. The plurality of first-type pumps share a single surface water intake pipeline and switch water intake through a plurality of control valves. The surface water intake pipeline is located at sea level for surface water intake. The plurality of second-type pumps are arranged in a one-to-one correspondence with the plurality of underground water intake pipelines and switch water intake through a plurality of control valves. The underground water intake pipeline is located below sea level for underground water intake. In step S2, the plurality of first-type pumps automatically switch to alternately perform surface water intake, and the plurality of second-type pumps automatically switch to alternately perform underground water intake.

[0011] In some embodiments, a plurality of the first type of pumps and a plurality of the second type of pumps automatically switch to alternately perform surface water extraction and groundwater extraction.

[0012] In some embodiments, the time interval between the automatic switching of the plurality of water intake pumps to alternately intake water or the time interval between the backwash pump flushing the water intake pipe does not exceed 24 hours.

[0013] In some embodiments, when the pressure in any of the water intake pipes is greater than 0.5 MPa, the backwash pump flushes the water intake pipe.

[0014] A prefabricated subglacial water extraction device suitable for Antarctica, used to implement the prefabricated subglacial water extraction method for Antarctica provided by the present invention; the prefabricated subglacial water extraction device for Antarctica includes:

[0015] The box body is mounted on the base and has an insulation layer.

[0016] A water intake pump is installed inside the tank. The water intake port of the water intake pump draws water through a water intake pipe that passes through the tank and extends into the seawater. The water outlet of the water intake pump is connected to a water pipe that can be switched between a water storage tank and a backwash water tank.

[0017] A backwash pump is installed inside the tank. The water inlet of the backwash pump is connected to the backwash water tank, and the water outlet of the backwash pump is connected to the water intake pipe.

[0018] The system includes multiple control valves, which are respectively located on the water intake pipe and the water use pipe to switch between controlling water intake and water use.

[0019] In some embodiments, multiple water intake pumps are provided, including multiple first-type pumps for surface water intake and multiple second-type pumps for underground water intake. The water intake pipeline includes a surface water intake pipeline and an underground water intake pipeline. Multiple first-type pumps share a single surface water intake pipeline and switch water intake through multiple control valves. The surface water intake pipeline is located at sea level for surface water intake. Multiple second-type pumps are arranged in a one-to-one correspondence with multiple underground water intake pipelines and switch water intake through multiple control valves. The underground water intake pipelines are located below sea level for underground water intake.

[0020] In some embodiments, both the water intake pump and the backwash pump are rotary pumps, and the flow-through components of the rotary pump are made of duplex stainless steel.

[0021] The water intake pump has a single pump flow rate q = 6 m³ / h, a head H = 50 m, a suction head H = 8 m, and a power N = 5.5 kW; the backwash pump has a single pump flow rate q = 12 m³ / h, a head H = 30 m, and a power N = 4 kW.

[0022] In some embodiments, the water intake pump further includes multiple standby pumps, each of which draws water through a separate underground water intake pipe, and the outlet of the standby pump is connected to the water supply pipe, and the outlet of the backwash pump is connected to the underground water intake pipe of the standby pump.

[0023] In some embodiments, the water intake pipe adopts a double-wall structure, with the inner pipe being made of duplex stainless steel and the outer pipe being made of stainless steel. An electric heat tracing is installed between the inner pipe and the outer pipe, and the electric heat tracing is always in a heating state.

[0024] In some embodiments, the housing is equipped with a hand chain hoist, which is slidably arranged along the length of the housing to reach the plurality of water intake pumps and the backwash pumps respectively.

[0025] In some embodiments, the container is a shipping container, the insulation layer includes a high-density polyurethane foam insulation filling layer and a fireproof and heat-insulating integrated outfitting panel, and an isolation pad is provided between the container and the base.

[0026] In some embodiments, the base includes:

[0027] Multiple steel columns, the bottom ends of which are supported on the ground by a base plate, are spaced apart along the edge of the box body; the surface area of ​​the base plate is larger than the surface area of ​​the bottom ends of the steel columns.

[0028] Multiple steel top beams are provided, with each steel top beam having its two ends connected to the tops of two adjacent steel columns. The box body is supported and fixed on the steel top beams, and the portion of the box body in contact with the steel top beams is provided with the isolation pad.

[0029] The beneficial effects of this invention are:

[0030] The prefabricated subglacial water intake method provided by this invention for Antarctica involves installing a water intake pump and a backwash pump inside an insulated enclosure. The insulated enclosure protects the water intake pump and the backwash pump, providing them with a safe, reliable, and temperature-appropriate working environment. By using the backwash pump to flush the water intake pipe, the method can prevent the water intake pipe from freezing due to low temperatures when it is not in use for a long time, and can also promptly clean up aquatic plants and other debris inside the water intake pipe to prevent blockage.

[0031] The prefabricated subglacial water intake device provided by this invention for Antarctica enables dry operation of the water intake pump and backwash pump by setting up a water intake pump and a backwash pump inside the tank, resulting in higher operational reliability and easier equipment maintenance. By setting up a backwash pump to backwash the water intake pipe, it can prevent the water intake pipe from being blocked by marine organisms and prevent the water intake pipe from freezing due to prolonged exposure to low temperature environment, thus affecting its use. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the layout structure of the prefabricated subglacial water intake device for Antarctica provided in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the box in the prefabricated subglacial water intake device for Antarctica provided in an embodiment of the present invention;

[0034] Figure 3 This is a rear view of the assembled subglacial water intake device for Antarctica provided in an embodiment of the present invention;

[0035] Figure 4 This is a front view of the assembled subglacial water intake device for Antarctica provided in an embodiment of the present invention;

[0036] Figure 5 This is a side view of a prefabricated subglacial water intake device for Antarctica provided in an embodiment of the present invention;

[0037] Figure 6 This is a cross-sectional view of the housing in the prefabricated subglacial water intake device for Antarctica provided in an embodiment of the present invention.

[0038] In the picture:

[0039] 1. Enclosure; 11. Control cabinet; 12. Dehumidifier; 13. Exhaust fan; 14. Tool cabinet; 15. Windproof and airtight door; 16. Interior wall; 17. Hand chain hoist; 171. Track; 18. Insulation layer; 19. Keel;

[0040] 2. Water intake pump;

[0041] 3. Backwash pump;

[0042] 4. Water intake pipe; 41. Surface water intake pipe; 42. Underground water intake pipe; 43. Reserved hole; 44. Controller;

[0043] 5. Use water pipes;

[0044] 6. Control valve;

[0045] 7. Base; 71. Steel column; 72. Base plate; 73. Steel top beam; 731. Isolation pad; 74. Steel support; 75. Steel bottom beam;

[0046] 8. Backwash water tank. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0051] like Figures 1-6 As shown, this embodiment of the invention provides a prefabricated subglacial water intake method and device suitable for Antarctica, which enables dry operation in the harsh low-temperature environment of Antarctica, automatic long-term safe and stable operation of the equipment system, and facilitates equipment maintenance.

[0052] The prefabricated subglacial water extraction method for Antarctica includes the following steps:

[0053] S1, a water intake pump 2 and a backwash pump 3 are installed inside the insulated box 1. The water intake port of the water intake pump 2 is connected to the water intake pipe 4, and the water outlet of the water intake pump 2 is connected to the water pipe 5. The water intake port of the backwash pump 3 is connected to the backwash water tank 8, the water outlet of the backwash pump 3 is connected to the water intake pipe 4, and the water pipe 5 is connected to the backwash water tank 8 and the water storage tank.

[0054] S2, turn on the water pump 2 to draw water from the surface or underground and fill the backwash water tank 8 and / or storage tank with water. After the backwash water tank 8 and / or storage tank are full, turn off the water pump 2.

[0055] S3, the backwash pump 3 is turned on, and the water in the backwash water tank 8 is pushed back into the water intake pipe 4 to flush the water intake pipe 4; the working pressure of the backwash pump 3 is greater than the water pressure in the water intake pipe 4.

[0056] The prefabricated subglacial water intake method provided by this invention, applicable to Antarctica, achieves dry operation of the water intake pump 2 and backwash pump 3 by installing a water intake pump 2 and a backwash pump 3 within a housing 1. This results in higher operational reliability and easier equipment maintenance. The insulated housing 1 provides a suitable temperature environment for the water intake pump 2, backwash pump 3, and at least part of the water intake pipe 4, ensuring the normal operation of the equipment within the housing 1 and meeting normal domestic water needs. By using the backwash pump 3 to backwash the water intake pipe 4, blockages caused by marine organisms can be prevented, and freezing can be prevented when the water intake pipe 4 is not in use for extended periods due to low temperatures, thus preventing continued use. It is understood that the operating pressure of the backwash pump 3 is greater than the water pressure inside the water intake pipe 4, allowing it to expel aquatic plants or residual water from the water intake pipe 4, facilitating the next water intake. Figure 1 As shown, multiple water intake pipes 4 are switched and controlled by multiple control valves 6 within the insulated enclosure 1, which facilitates control and equipment maintenance.

[0057] In some embodiments, multiple water pumps 2 are provided, and in step S2, the multiple water pumps 2 automatically switch to alternately extract water.

[0058] like Figure 1 As shown, taking four water intake pumps 2 as an example, pumps 1#-4# are working pumps. The four working pumps operate on a 24-hour automatic switching and alternating principle. Under normal circumstances, the water intake pumps 2 can operate in both automatic and manual control modes, and can be fully automatic. In emergencies, manual control can be switched. Users can set an automatic liquid level detection and prompt module according to the water tank requirements to automatically start and stop the water intake pumps 2. They can also set an automatic running timer to start and stop the water intake pumps 2 based on the running time. The automatic control of the water intake pumps 2 can be achieved through a separate control cabinet 11 installed inside the housing 1. It should be noted that when the water demand interval in the water storage tank is less than 24 hours, the water pump 2 will automatically switch to start water intake according to the water demand signal from the water tank, and multiple water pumps 2 can work alternately. When the water demand interval in the water storage tank is greater than 24 hours, the backwash pump 3 needs to be automatically started to backwash the water intake pipe 4 to prevent the water intake pipe 4 from being blocked or frozen, and to ensure the normal start-up and water intake of the water pump 2. The time interval between two water intakes or backwashes of each water intake pipe 4 shall not exceed 24 hours. Specifically, one water pump 2 can be used to fill the backwash water tank 8 with water, and then backwash the water intake pipe 4 of another water pump 2, and so on, alternating multiple times.

[0059] In some embodiments, the plurality of water intake pumps 2 include a plurality of first-class pumps for surface water intake and a plurality of second-class pumps for underground water intake. The water intake pipeline 4 includes a surface water intake pipeline 41 and an underground water intake pipeline 42. The plurality of first-class pumps share a surface water intake pipeline 41 and switch water intake through a plurality of control valves 6. The surface water intake pipeline 41 is located at sea level for surface water intake. The plurality of second-class pumps are arranged one-to-one with the plurality of underground water intake pipelines 42 and switch water intake through a plurality of control valves 6. The underground water intake pipelines 42 are located below sea level for underground water intake. In step S2, the plurality of first-class pumps automatically switch to alternately perform surface water intake and the plurality of second-class pumps automatically switch to alternately perform underground water intake.

[0060] like Figure 1In this embodiment, pumps 1# and 2# are Class I pumps used for surface water intake, while pumps 3# and 4# are Class II pumps used for underground water intake. Among the multiple water intake pipes 4, there is one surface water intake pipe 41, which is connected to pump 1# or 2# via a control valve 6 (on / off valve) inside the housing 1 for surface water intake. There are two underground water intake pipes 42, which are connected to pumps 3# and 4# respectively. The portion of the underground water intake pipe 42 inside the housing 1 is connected, while the portion outside the housing 1 is drilled into an independent pipe underground. The underground water intake pipe 42 extends at least 3m-8m below sea level. The integrated process of drilling into the rock strata and the underground water intake pipe 42 directly anchors the underground water intake pipe 42 to the bedrock, avoiding the risk of sea ice shearing. This improves the reliability by two orders of magnitude compared to traditional trestle-type or well-type water intakes. By setting up automatic switching between multiple Class I pumps to alternately extract surface water, blockage or freezing of the surface water extraction pipe 41 connected to the Class I pumps can be avoided. Similarly, by setting up automatic switching between multiple Class II pumps to alternately extract underground water, blockage or freezing of the underground water extraction pipe 42 connected to the Class II pumps can be avoided. By setting up an automatic water extraction switching scheme, the number of times the backwash pump 3 is started can be reduced, and it is convenient to monitor the working status of the water extraction pump 2 or the water extraction pipe 4 at any time, so as to carry out timely inspection and maintenance.

[0061] In some embodiments, a plurality of Class I pumps and a plurality of Class II pumps automatically switch to alternately perform surface water extraction and groundwater extraction.

[0062] In this embodiment, the first type of pump is used for surface water intake and is generally started during periods of higher Antarctic temperatures. The second type of pump is used for underground water intake and is generally started during periods of lower Antarctic temperatures. Since Antarctica is in a low-temperature phase for most of the year, the second type of pump is used more frequently. It is preferable to set up two second type pumps to operate alternately with automatic switching. This allows for restarting of the second type of pump within the designed time interval, thereby helping to avoid freezing of the second type of pump and enabling timely handling of any problems. When the temperature meets the requirements, the first type of pump and the second type of pump automatically switch and alternate operation, which facilitates the monitoring of the operating status of multiple water intake pumps 2.

[0063] In some embodiments, the time interval between the automatic switching of multiple water intake pumps 2 to alternately intake water or the time interval between the backwash pump 3 flushing the water intake pipe 4 does not exceed 24 hours.

[0064] As in the above embodiment, the time interval between alternating water intake of the second type of pump does not exceed 24 hours. The backwash pump 3 only flushes the water intake pipe 4 when the pressure in the water intake pipe 4 is greater than 0.5 MPa. When water consumption is low, multiple small-volume water tanks can be used alternately to increase the starting frequency of the water intake pump 2, facilitating multiple cycles of starting each water intake pump 2 to resist low-temperature freezing conditions.

[0065] In this embodiment of the invention, to prevent the outdoor water intake pipes 4 from freezing, all outdoor water intake pipes 4 employ alternating water intake operations and 24-hour real-time electric heat tracing for continuous heating. The PLC system within the control cabinet 11 automatically controls multiple rotor pumps to alternately start the water intake process, ensuring that the water intake pipes 4 operate in both dry and wet conditions, preventing freezing and maintaining unobstructed flow. The 24-hour real-time electric heat tracing temperature control is set to +5℃, ensuring that even if -2℃ seawater flows through, the water intake pipes 4 remain above 0℃, preventing freezing and maintaining unobstructed flow.

[0066] This invention also provides a prefabricated subglacial water extraction device suitable for Antarctica, for implementing a prefabricated subglacial water extraction method applicable to Antarctica, such as... Figures 1-6 The prefabricated subglacial water intake device for Antarctica includes a housing 1, a water intake pump 2, a backwash pump 3, and control valves 6. The housing 1 is mounted on a base 7, isolating it from the ground and facilitating temperature control and maintenance. The housing 1 is equipped with an insulation layer 18. The water intake pump 2 is located inside the housing 1, and its intake port draws water through a water intake pipe 4. The water intake pipe 4 passes through the housing 1 and extends into the seawater for water intake. The outlet of the water intake pump 2 is connected to a water supply pipe 5, which switches between a water storage tank and a backwash water tank 8. The backwash pump 3 is located inside the housing 1, with its intake port connected to the backwash water tank 8 and its outlet connected to the water intake pipe 4. Multiple control valves 6 are provided, each located on the water intake pipe 4 and the water supply pipe 5 to switch between water intake and water supply.

[0067] The prefabricated subglacial water intake device for Antarctica provided by this invention enables dry operation of the water intake pump 2 and backwash pump 3 by installing them within an insulated housing 1. The insulated housing 1 protects the water intake pump 2 and backwash pump 3, providing a safe and reliable working environment. By installing a dehumidifier 12 and an exhaust fan 13 within the housing 1, the working environment of the water intake pump 2 and backwash pump 3 can be adjusted, further enhancing their operational reliability. The backwash pump 3 flushes the water intake pipe 4, reducing or preventing freezing at low temperatures and promptly removing impurities such as aquatic plants from the water intake pipe 4 to prevent blockages.

[0068] In some embodiments, multiple water intake pumps 2 are provided, including multiple first-class pumps for surface water intake and multiple second-class pumps for underground water intake. The water intake pipeline 4 includes a surface water intake pipeline 41 and an underground water intake pipeline 42. The multiple first-class pumps share a surface water intake pipeline 41 and switch water intake through multiple control valves 6. The surface water intake pipeline 41 is located at sea level for surface water intake. The multiple second-class pumps are arranged one-to-one with the multiple underground water intake pipelines 42 and switch water intake through multiple control valves 6. The underground water intake pipelines 42 are located below sea level for underground water intake.

[0069] In this embodiment, multiple water intake pumps 2 automatically switch operation and take turns taking water, which facilitates continuous water intake and timely acquisition of the working status of the water intake pumps 2. That is, if any water intake pump 2 fails to switch its working status, it is considered to be faulty, so that it can be repaired in time. By setting up a water intake pipe 4, the water intake pipe 4 can reach below the sea level and pass through the sea ice layer to take water. By setting up a double-walled structure for the water intake pipe 4, the low temperature adaptability of the water intake pipe 4 is improved, which is suitable for the low temperature sub-ice water intake conditions in Antarctica, ensuring the long-term safe and stable operation of the water intake pumps 2. By setting up a backwash pump 3, the water intake pumps 2 can be maintained regularly or the water intake pipe 4 can be backwashed when the pressure in the water intake pipe 4 exceeds the threshold, preventing the water intake pipe 4 from being blocked by marine organisms and facilitating equipment maintenance. Generally, flow meters or pressure gauges are installed at intervals in the water intake pipe 4. When the inlet and outlet water pressure in a certain section of the water intake pipe 4 exceeds a threshold (e.g., 0.5 MPa), the backwash pump 3 is activated, pumping all the water in the backwash water tank 8 into the water intake pipe 4 to perform backwashing on the water intake pipe 4, thereby improving water supply capacity. The flushing time is 5-8 minutes, and the expansion rate reaches 40%-50%. A control cabinet 11 is installed inside the housing 1. The water intake pump 2 and the backwash pump 3 are respectively connected to the control cabinet 11 for automatic control.

[0070] In some embodiments, both the intake pump 2 and the backwash pump 3 are rotary pumps, and the flow-through components of the rotary pumps are made of duplex stainless steel. Based on the actual temperature conditions in Antarctica, the rotary pumps are low-temperature resistant rotary pumps, and duplex stainless steel can improve the rotary pumps' resistance to seawater corrosion.

[0071] The single-pump flow rate of water intake pump 2 is q=6m³ / h, head H=50m, suction head H=8m, and power N=5.5kW; the single-pump flow rate of backwash pump 3 is q=12m³ / h, head H=30m, and power N=4kW.

[0072] It is understandable that, given the varying operating conditions of Antarctic seawater (from around -2°C to flowing, high-salinity seawater), the intake pipe 4 needs to withstand the continuous mechanical impact of floating ice and ice fragments. The tidal reciprocating flow generates periodic reverse suction, reaching a maximum of 0.3 MPa. Vertical drilling through the rock strata to below sea level increases both suction head and negative pressure. Therefore, in this embodiment, the rotor pump body is integrally forged from low-temperature, high-strength 2205 alloy stainless steel, with a yield strength of 450-500 MPa and a tensile strength ≥620 MPa, twice that of ordinary austenitic stainless steel (such as 304 / 316). This allows it to withstand cyclic impacts under operating conditions from -40°C to +40°C, solving the problem of chloride stress corrosion and erosion coupling failure. The rotor of the rotor pump adopts a five-bladed torsional involute profile, combined with a vacuum-grade magnetohydrodynamic seal, achieving a 5 Pa ultimate vacuum and a theoretical suction head of 8.5 m, a 300% improvement over existing centrifugal pumps. Simultaneously, in conjunction with a foreign matter cyclone separator and a two-way check valve, it can handle ice debris and other contaminants, and can complete tidal reverse flow self-locking within 30 seconds to prevent pump cavitation and backflow. Test results show that under continuous operation, the average water intake flow rate is 6 m³ / h, and the operational integrity rate during the ice season is 100%.

[0073] In some embodiments, the water intake pump 2 further includes multiple standby pumps, each standby pump drawing water from an underground water intake pipe 42 independently, and the outlet of the standby pump is connected to a water pipe 5. The outlet of the backwash pump 3 is connected to the underground water intake pipe 42 of the standby pump. The standby pumps are manually started in the event of a failure of multiple working pumps.

[0074] like Figure 1 As shown, within the housing 1, pumps 1-4 are the working pumps, while pumps 5 and 6 are the standby pumps. The four working pumps operate on a 24-hour automatic switching principle. The standby pumps are manually activated only in case of a working pump malfunction, i.e., when automatic switching is not possible. Under normal conditions, the standby pumps are not in use. After activation, their operation is similar to that of the two second-class pumps, with the two standby pumps alternating. Each switching operation lasts at least 5 minutes, and the interval between two water intakes does not exceed 24 hours. After each water intake, the backwash pump 3 can be activated to flush the underground water intake pipe 42. The backwash tank 8 is automatically filled with water after backwashing. Water can be transferred from the storage tank to the backwash tank 8, or backwashing can be activated only when the pressure in the underground water intake pipe 42 or pump 2 exceeds 0.5 MPa.

[0075] In some embodiments, the water intake pipe 4 adopts a double-wall structure, with the inner pipe being made of duplex stainless steel and the outer pipe being made of stainless steel. An electric heat tracing is installed between the inner and outer pipes, and the electric heat tracing is always in a heating state.

[0076] The electric heat tracing communication connection installed on the water intake pipe 4 is an independent controller 44, such as... Figure 1 The controller 44 is located inside the housing 1. The controller 44 is used to monitor the temperature of the water intake pipe 4 in real time and automatically control the start of the electric heating to ensure that the heating temperature inside the water intake pipe 4 is not lower than 5°C. In this embodiment, the backwash pump 3 is equipped with an independent controller 44, which can be linked with the control cabinet 11 for control. The rotor pump starts during the working interval and flushes once every 24 hours for a continuous flushing time of 2 minutes. This can greatly reduce the possibility of kelp and small marine organisms attaching to the water intake pipe 4. The flushing effect of the water intake pipe 4 can be detected by the pressure gauges set at the inlet and outlet of the water intake pipe 4 or the water intake pump 2. The inlet and outlet pressure values ​​are normal if they are between 0.3MPa and 0.5MPa. If any pressure is higher than 0.5MPa, there may be a blockage. If the pressure is found to be too high, manual backwashing is started to extend the flushing time until the pressure returns to the normal range to ensure that the water intake pipe 4 supplies water normally.

[0077] In some embodiments, a hand chain hoist 17 is provided inside the housing 1, and the hand chain hoist 17 is slidably arranged along the length of the housing 1 to reach a plurality of water intake pumps 2 and backwash pumps 3 respectively.

[0078] Combination Figure 2 and Figure 6 I-beams are installed at both ends of the box body 1 along its length as rails 171. The hand chain hoist 17 can move on the rails 171 in the direction of the length of the box body 1. Multiple water pumps 2 and backwash pumps 3 are spaced apart in the box body 1 along its length. The backwash water tank 8 is located in the middle position. Thus, the hand chain hoist 17 can reach any water pump 2 or backwash pump 3 in the box body 1, which is convenient for inspection and maintenance operations.

[0079] In some embodiments, the container 1 is a shipping container, the insulation layer 18 includes a high-density polyurethane foam insulation filling layer and a fireproof and heat-insulating integrated outfitting panel, and an isolation pad 731 is provided between the container 1 and the base 7.

[0080] like Figures 1-6In the illustrated embodiment, container 1 uses a standard 40-foot shipping container. Container 1 comprises two containers, which are joined together along one side of their length and connected by an internal wall 16. A hand-operated hoist 17 is installed inside the container housing the water intake pump 2 and the backwash pump 3, and the hand-operated hoist 17 slides along the length of container 1. Container 1 is designed to withstand a maximum wind speed of 65 m / s and a low temperature of -40℃. The bottom, top, and walls of container 1 are all designed with multi-layer insulation. The inner wall of container 1, from the outside in, includes a 0.8mm corrugated stainless steel protective plate, a No. 10 channel steel frame, a 100mm high-density polyurethane foam insulation filling layer, and an 80mm fireproof and heat-insulating integrated outfitting panel. The bottom plate of container 1 is equipped with 600mm wooden keel 19 with 50mm spacing. A 50mm aviation low-temperature resistant rubber pad 731 is used as an isolation pad between container 1 and the steel structure base 7 to prevent cold bridging. The above configuration ensures temperature isolation between indoors and outdoors and improves low-temperature resistance. By setting up the keel 19 support, the structural strength of the container body 1 can be improved. The keel 19 support can be made of square tube beams, channel steel or I-beams, etc. An inner wall 16 is set between the two containers to facilitate communication. The container body 1 is equipped with a dehumidifier 12 and a control cabinet 11. The end side wall of the container body 1 has multiple reserved holes 41. The reserved holes 41 are fitted with sleeves. Water pipes 5 and water intake pipes 4 are installed through the reserved holes 41 on the side wall and sealed by the sleeves. The container body 1 is also equipped with a windproof and airtight door 15 for personnel to enter and exit, and a tool cabinet 14 and an exhaust fan 13 are arranged there.

[0081] In some embodiments, the base 7 includes a plurality of steel columns 71 and a plurality of steel top beams 73. The bottom ends of the steel columns 71 are supported on the ground by a base plate 72. The plurality of steel columns 71 are spaced apart along the bottom edge of the box body 1. The surface area of ​​the base plate 72 is larger than the surface area of ​​the bottom ends of the steel columns 71. The two ends of each steel top beam 73 are respectively connected to the top ends of two adjacent steel columns 71. The box body 1 is supported and fixed on the steel top beams 73. An isolation pad 731 is provided on the part of the box body 1 that contacts the steel top beams 73.

[0082] like Figures 3-5 In the illustrated embodiment, the base 7 is provided with six steel columns 71, four of which are located at the four bases of the container 1, and two of which are located in the middle along the length of the container 1, providing simultaneous multi-point support for two containers. The steel columns 71 and the steel top beam 73 support the container 1 above the ground, connecting it to the ground via a staircase. The container 1 is equipped with a windproof and airtight door 15 for personnel passage. The base plate 72 has a square structure, and its surface area is significantly larger than that of the bottom of the steel columns 71, thereby improving the stability of the support provided by the steel columns 71.

[0083] like Figures 3-4The steel top beam 73 is located at the top of two adjacent steel columns 71 and is detachably connected and installed. It forms a rectangular support structure at the bottom of the box 1, fully supporting the axial direction of the bottom of the box 1, resulting in good stability and high reliability. The isolation pad 731 isolates the bottom of the box 1 from the steel top beam 73, reducing friction and achieving stable isolation. The isolation pad 731 can be made of rubber.

[0084] To further improve the stability between the steel column 71 and the steel top beam 73, the base 7 also includes a steel support 74. One end of the steel support 74 is connected to the steel column 71, and the other end is connected to the steel top beam 73. The included angle between the steel support 74 and the steel column 71 is greater than 0° and less than 90°, thus forming a triangular reinforcing structure between the steel column 71 and the steel top beam 73. Figure 3 Fixed seats are welded to the steel columns 71 and steel top beams 73 at the positions where steel supports 74 are connected. The two ends of each steel support 74 are connected to the two fixed seats at opposite positions via bolt and nut assemblies. It can be understood that each of the two steel supports 74 on each steel column 71 is connected to a steel top beam 73 on one or both sides along the length of the container 1. To facilitate the installation of the container 1, a connecting beam is provided between the bottom surfaces of the two containers. The connecting beam passes through the bottom of the container 1 along its length and is fixedly welded to the bottom beam of the container 1.

[0085] In some embodiments, the base 7 further includes a steel bottom beam 75, the two ends of which are connected to the bottom ends of two steel columns 71 along the width direction of the box body 1.

[0086] like Figure 5 As shown, the steel bottom beams 75 are arranged along the width direction of the box body 1. In this embodiment, three steel bottom beams 75 are provided, which are respectively connected to the bottom ends of two steel columns 71 in opposite positions to fix the relative positions of the two steel columns 71. The steel bottom beams 75 and steel columns 71 are both supported on the surface of the base plate 72.

[0087] The Antarctic environment, with outdoor temperatures dropping to -40°C and seawater temperatures consistently below -2°C, average wind speeds of approximately 20 m / s and maximum wind speeds of 55.1 m / s, coupled with extreme weather events such as blizzards, poses significant challenges to on-site equipment, pipelines, and process performance. This invention provides a modular prefabricated subglacial water intake device suitable for Antarctica. Multiple water intake pumps 2 and backwash pumps 3 are housed within a housing 1, which is supported by a base 7. All components are detachable during installation, resulting in short construction time. The device is resistant to low temperatures and corrosion, operates automatically, and is pollution-free, minimizing its impact on the Antarctic environment. It can be deployed in any coastal area of ​​Antarctica, exhibiting strong adaptability, stability, reliability, unattended operation, and easy maintenance. This solves the water intake problem for Antarctic coastal research stations, thereby enhancing their water supply capabilities.

[0088] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A prefabricated subglacial water extraction method applicable to Antarctica, characterized in that, Includes the following steps: S1, a water intake pump (2) and a backwash pump (3) are installed in the insulated box (1). The water intake port of the water intake pump (2) is connected to the water intake pipe (4), and the water outlet of the water intake pump (2) is connected to the water pipe (5). The water intake port of the backwash pump (3) is connected to the backwash water tank (8), and the water outlet of the backwash pump (3) is connected to the water intake pipe (4). The water pipe (5) is connected to the backwash water tank (8) and the water storage tank. S2, turn on the water pump (2) to draw water from the surface or underground and fill the backwash water tank (8) and / or the storage tank with water. After the backwash water tank (8) and / or the storage tank are filled with water, turn off the water pump (2). S3, the backwash pump (3) is turned on, and the water in the backwash water tank (8) is pushed back into the water intake pipe (4) to flush the water intake pipe (4); the working pressure of the backwash pump (3) is greater than the water pressure in the water intake pipe (4).

2. The prefabricated subglacial water extraction method applicable to Antarctica according to claim 1, characterized in that, The water pump (2) is provided in multiple ways. In step S2, the multiple water pumps (2) automatically switch to take water in turn.

3. The prefabricated subglacial water extraction method applicable to Antarctica according to claim 2, characterized in that, The plurality of water intake pumps (2) include a plurality of first-class pumps for surface water intake and a plurality of second-class pumps for underground water intake. The water intake pipeline (4) includes a surface water intake pipeline (41) and an underground water intake pipeline (42). The plurality of first-class pumps share a surface water intake pipeline (41) and switch water intake through a plurality of control valves (6). The surface water intake pipeline (41) is located at sea level for surface water intake. The plurality of second-class pumps are set up one-to-one with the plurality of underground water intake pipelines (42) and switch water intake through a plurality of control valves (6). The underground water intake pipelines (42) are located below sea level for underground water intake. In step S2, the plurality of first-class pumps automatically switch to alternately perform surface water intake and the plurality of second-class pumps automatically switch to alternately perform underground water intake.

4. The prefabricated subglacial water extraction method for Antarctica according to claim 3, characterized in that, Multiple first-type pumps and multiple second-type pumps automatically switch to alternately perform surface water extraction and groundwater extraction.

5. The prefabricated subglacial water extraction method for Antarctica according to claim 2, characterized in that, The time interval between the automatic switching of the multiple water intake pumps (2) to alternate water intake or the time interval between the backwash pump (3) flushing the water intake pipe (4) shall not exceed 24 hours.

6. The prefabricated subglacial water extraction method applicable to Antarctica according to claim 2, characterized in that, When the pressure in any of the water intake pipes (4) is greater than 0.5 MPa, the backwash pump (3) flushes the water intake pipe (4).

7. A prefabricated subglacial water extraction device suitable for Antarctica, used to implement the prefabricated subglacial water extraction method for Antarctica as described in any one of claims 1-6; characterized in that, The prefabricated subglacial water intake device suitable for Antarctica includes: Box (1), the box (1) is mounted on base (7), and the box (1) is provided with heat insulation layer (18); A water pump (2) is installed inside the housing (1). The water inlet of the water pump (2) draws water through a water pipe (4). The water pipe (4) passes through the housing (1) and extends into the seawater to draw water. The outlet of the water pump (2) is connected to a water pipe (5). The water pipe (5) is switched between a water storage tank and a backwash water tank (8). A backwash pump (3) is installed inside the housing (1). The water inlet of the backwash pump (3) is connected to the backwash water tank (8), and the water outlet of the backwash pump (3) is connected to the water intake pipe (4). Control valve (6), multiple control valves (6) are provided, and multiple control valves (6) are respectively provided on the water intake pipe (4) and the water use pipe (5) to switch control of water intake and water use.

8. The prefabricated subglacial water intake device for Antarctica according to claim 7, characterized in that, The water intake pumps (2) are provided in multiple ways. The multiple water intake pumps (2) include multiple first-class pumps for surface water intake and multiple second-class pumps for underground water intake. The water intake pipeline (4) includes a surface water intake pipeline (41) and an underground water intake pipeline (42). The multiple first-class pumps share a surface water intake pipeline (41) and switch water intake through multiple control valves (6). The surface water intake pipeline (41) is located at sea level for surface water intake. The multiple second-class pumps are set up one-to-one with the multiple underground water intake pipelines (42) and switch water intake through multiple control valves (6). The underground water intake pipelines (42) are located below sea level for underground water intake.

9. The prefabricated subglacial water intake device for Antarctica according to claim 7, characterized in that, Both the water intake pump (2) and the backwash pump (3) are rotary pumps, and the flow-through components of the rotary pumps are made of duplex stainless steel. The single pump flow rate of the water intake pump (2) is q=6m³ / h, the head H=50m, the suction head H=8m, and the power N=5.5kW; the single pump flow rate of the backwash pump (3) is q=12m³ / h, the head H=30m, and the power N=4kW.

10. The prefabricated subglacial water intake device for Antarctica according to claim 8, characterized in that, The water intake pump (2) also includes multiple backup pumps. Each backup pump has its own water intake port that draws water through an underground water intake pipe (42). The outlet of the backup pump is connected to the water pipe (5). The outlet of the backwash pump (3) is connected to the underground water intake pipe (42) of the backup pump.

11. The prefabricated subglacial water intake device for Antarctica according to claim 7, characterized in that, The water intake pipe (4) adopts a double-wall structure, with the inner pipe being made of duplex stainless steel and the outer pipe being made of stainless steel. An electric heat tracing is installed between the inner pipe and the outer pipe, and the electric heat tracing is always in a heating state.

12. The prefabricated subglacial water intake device for Antarctica according to claim 7, characterized in that, The housing (1) is equipped with a hand chain hoist (17), which is slidably arranged along the length of the housing (1) to reach the multiple water intake pumps (2) and the backwash pumps (3).

13. The prefabricated subglacial water intake device for Antarctica according to claim 7, characterized in that, The container (1) is a shipping container. The insulation layer (18) includes a high-density polyurethane foam insulation filling layer and a fireproof and heat-insulating integrated outfitting panel. An isolation pad (731) is provided between the container (1) and the base (7).

14. The prefabricated subglacial water intake device for Antarctica according to claim 13, characterized in that, The base (7) includes: Multiple steel columns (71) are provided, with their bottom ends supported on the ground by a base plate (72). The multiple steel columns (71) are spaced apart along the edge of the box (1). The surface area of ​​the base plate (72) is larger than the surface area of ​​the bottom ends of the steel columns (71). Multiple steel top beams (73) are provided, with each steel top beam (73) having its two ends connected to the tops of two adjacent steel columns (71). The box body (1) is supported and fixed on the steel top beams (73), and the part of the box body (1) that contacts the steel top beams (73) is provided with the isolation pad (731).

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