A novel multi-gate air-filled valve water lifting system

Abstract

This invention provides a novel multi-gate air-filled valve water lifting system. This system abandons the traditional mechanical energy conversion mode of water pumps relying on impeller rotation, and innovatively adopts a water lifting method that uses high-pressure gas buoyancy to directly drive the water tank to float vertically. This fundamentally eliminates inherent losses such as mechanical transmission, hydraulic impact, and volumetric leakage. By constructing a fully closed-loop track conveying system for the water tank's "filling, sinking, conveying, lifting, draining, and recycling," and innovatively designing a three-layer graded sealing gate structure to achieve reliable sealing and pressure isolation under high-pressure environments, combined with the timing coordination of the automatic control unit, the entire process achieves closed-loop automated operation. It can flexibly adapt to single-tank intermittent operation and multi-tank continuous operation modes, meeting diverse engineering needs from small irrigation areas to large pumped storage power stations. It provides an unprecedentedly efficient, economical, and reliable solution for the construction and renovation of water lifting projects.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering, and in particular to a novel multi-gate air-filled valve water lifting system. Background Technology

[0002] Currently, pumped storage power stations are entering a phase of large-scale construction, while water-lifting renovation projects in large agricultural irrigation areas are also progressing steadily. In these projects, the pumping station water-lifting system is a core component, and its operational efficiency directly determines the overall economy and reliability of the project. Existing mainstream water-lifting technologies generally use centrifugal pumps, axial flow pumps, and other impeller pumps as core equipment.

[0003] However, the practical application of such traditional water pump systems has long been constrained by multiple factors. First, their working principle dictates inherent losses: energy conversion is achieved by a motor driving an impeller at high speed, resulting in significant mechanical transmission losses, hydraulic impact losses, and volumetric leakage losses. This leads to an actual operating efficiency of only 60%-80% under rated conditions, with a substantial decrease in efficiency under varying conditions. Second, because the core components of the pump operate at high speed underwater for extended periods, they are highly susceptible to serious problems such as impeller cavitation, seal aging, and bearing wear, resulting in short overhaul cycles and high costs for routine maintenance and parts replacement. Third, traditional pumping stations have high construction barriers, requiring the construction of pump houses, intake pools, outlet pools, and complex pressure piping systems. This involves substantial civil engineering work, long construction periods, and significant difficulties in subsequent modifications and expansions, resulting in substantial upfront costs.

[0004] Besides the aforementioned mainstream technologies, existing pneumatic water lifting equipment or track-type water lifting devices have also failed to effectively solve the core problems of engineering applications. Pneumatic water lifting equipment is mostly an intermittent single-tank structure, generally suffering from limitations in lifting height, discontinuous water output, poor sealing performance, and continuous efficiency decline due to gas leakage, making it unable to meet the needs of large-scale, long-term stable water lifting. Track-type water lifting devices, on the other hand, are generally plagued by problems such as gate seal failure, unstable water tank trajectory, and the inability to achieve fully closed-loop automated operation, making large-scale promotion in water conservancy projects difficult.

[0005] Therefore, there is an urgent need in this field for a new type of water lifting system that can significantly reduce energy loss, achieve continuous and stable water output, and has excellent sealing performance and low construction and operation and maintenance costs, so as to simultaneously meet the dual engineering requirements of high-lift water lifting for pumped storage power stations and low-lift, high-flow water lifting for large-scale irrigation areas. Summary of the Invention

[0006] The purpose of this invention is to provide a novel multi-gate air-filled valve water lifting system to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following solution: This invention provides a novel multi-gate air-filled valve water lifting system, comprising: A closed-loop track conveying unit is used to provide a continuous conveying path for the water tank from the water intake end to the water lifting end and back to the water intake end; The water tank lifting unit includes a pressurized water tank for carrying water, and a high-pressure gas cylinder installed on the pressurized water tank for providing buoyancy driving force. The graded sealing gate unit includes at least three gates arranged sequentially along the conveying direction, which are used to gradually build up and isolate pressure when the water tank passes through, forming a sealed channel connecting the closed-loop track conveying unit and the vertical pressurized water column unit. The vertical pressurized water column unit is a vertically arranged pressurized cylinder, which forms an internal directional water chamber for the water tank to float. The closed-loop track conveying unit transports a water tank fully loaded with water to the bottom of the vertical pressurized water column unit via the graded sealing gate unit. The high-pressure gas cylinder releases gas to drive the water tank to float up within the vertical pressurized water column unit to complete the water lifting.

[0008] Preferably, the closed-loop track conveying unit includes an underwater track conveying mechanism disposed at the bottom of the water body, and a top return groove disposed at the top of the vertical pressurized water column unit and connected to the water intake end; the underwater track conveying mechanism includes multiple independently driven track assemblies, each track assembly being equipped with an independent waterproof power system.

[0009] Preferably, the underwater tracked conveyor mechanism is divided into three sections, each of which adopts a symmetrical and centrally arranged double track; the tracked power system includes a hydraulic motor, a dual-pump hydraulic system, a waterproof motor, and a lithium battery pack that powers the waterproof motor.

[0010] Preferably, the water tank lifting unit further includes a water inlet located at the bottom of the pressurized water tank and an electric actuator for controlling its opening and closing, as well as a water outlet located at the top of the pressurized water tank; the high-pressure gas cylinder is detachably installed on the top of the pressurized water tank and is connected to the internal chamber of the water tank via an air filling valve assembly.

[0011] Preferably, the three gates of the graded sealing gate unit are sequentially divided along the running direction of the water tank to form a reservoir-side transition chamber, an intermediate sealing chamber, and a water column-side access chamber; each gate is equipped with an independent gate control device, which realizes pressure balance and isolation between adjacent chambers through graded opening and closing, so as to ensure the water sealing of the vertical pressurized water column unit.

[0012] Preferably, the vertical pressurized water column unit adopts a cylindrical structure made of fiberglass, with a docking interface at its bottom side that communicates with the graded sealing gate unit, and a water outlet at its top that communicates with the closed-loop track conveying unit.

[0013] Preferably, the system also includes an automatic control unit, which is electrically connected to the closed-loop track conveying unit, the water tank electric actuator, the graded sealing gate unit, and the air valve assembly, respectively, and is used to control the entire process of water tank filling, sinking, conveying, floating, draining, and recycling, so as to realize the automatic closed-loop timing control of the system.

[0014] Preferably, the inflation valve assembly is further provided with a pressure sensor and a flow regulating valve. The automatic control unit dynamically adjusts the opening of the flow regulating valve according to the air pressure signal fed back by the pressure sensor, so as to control the amount of high-pressure gas released and make the pressurized water tank float up at a uniform speed.

[0015] Preferably, the system includes at least two water tank lifting units that work together. The automatic control unit controls the operating sequence of each water tank, so that different water tanks are in the stages of filling and submerging, gate conveying, pneumatic floating and empty tank recovery, respectively, to achieve continuous and uninterrupted water lifting.

[0016] This invention also provides a novel water lifting method for a multi-gate air-filled valve water lifting system, comprising the following steps: After filling the empty water tank containing the high-pressure gas cylinder with water, it sinks to the bottom of the water intake end at the starting position of the conveying process by its own weight. The three-stage gate is controlled to open and close in stages, and the fully loaded water tank is transported to the bottom of the cylinder of the vertical pressurized water column unit while maintaining pressure isolation. Open the inflation valve and use the gas released from the high-pressure gas cylinder to force the water out of the water tank, so that the water tank floats vertically to the top along the pressurized water column under the drive of buoyancy, thus completing the water lifting. The empty water tank, after being drained, is transported back to the water intake end via the top return track, and the high-pressure gas cylinder is replaced to begin the next water lifting cycle.

[0017] The present invention achieves the following beneficial technical effects compared to the prior art: This invention provides a novel multi-gate air-filled valve water lifting system. This system abandons the traditional mechanical energy conversion mode of water pumps relying on impeller rotation, and innovatively adopts a water lifting method that uses high-pressure gas buoyancy to directly drive the water tank to float vertically. This fundamentally eliminates inherent losses such as mechanical transmission, hydraulic impact, and volumetric leakage, resulting in a stable actual operating efficiency of 82%-86%, which is up to 26 percentage points higher than traditional pumping stations. Under the same scale, operating energy consumption is reduced by more than 20%, demonstrating outstanding energy-saving benefits. Simultaneously, by constructing a fully closed-loop track conveying system for the water tank's "filling, sinking, conveying, lifting, draining, and recycling," and innovatively designing a three-layer graded sealing gate structure to achieve high-pressure operation... The reliable sealing and pressure isolation, combined with the timing coordination of the automatic control unit, not only solves the industry pain points of discontinuous water lifting and easy seal failure in existing equipment, but also realizes closed-loop automated operation of the entire process. It can flexibly adapt to single-tank intermittent operation and multi-tank continuous operation modes, meeting the diverse engineering needs from small irrigation areas to large pumped storage power stations. In addition, the core components of the system are made of corrosion-resistant materials and have no high-speed rotating vulnerable parts, which greatly extends the equipment overhaul cycle and reduces the total life cycle maintenance cost by more than 60%. In addition, the modular design reduces the amount of civil engineering work by more than 70%, providing an unprecedented efficient, economical and reliable solution for the construction and renovation of water lifting projects. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 These are three views of the pressurized water tank in this invention; Figure 2 This is a schematic diagram of the underwater tracked conveyor mechanism in this invention; Figure 3 This is a schematic diagram of the overall operation of the system of the present invention. Detailed Implementation

[0020] Unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections. In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and for simplifying the description, 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 invention.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The purpose of this invention is to provide a novel multi-gate air-filled valve water lifting system to solve the problems existing in the prior art.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1: The core of this invention lies in providing an engineering solution that completely eliminates the rotational losses of traditional water pump impellers and achieves continuous and efficient water lifting. Therefore, this embodiment specifically provides a novel multi-gate air-filled valve water lifting system. Please refer to the following for further details. Figure 1 , Figure 2 and Figure 3The system mainly includes: a closed-loop track conveying unit, a water tank lifting unit, a graded sealing gate unit, a vertical pressurized water column unit, an air supply unit, and an automatic control unit for overall coordination. In a specific embodiment applied to a pumped storage power station or a large irrigation area, the specific structure and parameter settings of each core component of the system are as follows.

[0026] First, as the core component of the water lifting operation, the water tank lifting unit includes a pressurized water tank. This pressurized water tank is a cylindrical structure made of 304 stainless steel, with an inner diameter of 4 meters and a height of 4 meters, providing an effective volume of 50.24 cubic meters. The cylinder wall thickness is 8 millimeters. To enhance the circumferential stiffness of the cylinder under internal or external pressure, a 100-millimeter-wide, 10-millimeter-thick annular reinforcing rib 3 is installed every meter along the axial direction. Four stainless steel legs 4, each 300 millimeters high, are evenly distributed at the bottom of the pressurized water tank to distribute structural pressure when placed on a bottom or platform. In terms of functional interfaces, the bottom of the pressurized water tank has a 300-millimeter-diameter filling port, which is equipped with an STV-500 series water tank electric actuator 2, enabling remote on / off control for filling the tank with reservoir water. The top of the tank has a 200-millimeter-diameter suction port for draining water after lifting is complete. Crucially, a fixed mounting position is provided at the center of the top of the water tank for the detachable installation of a high-pressure gas cylinder 5. This high-pressure gas cylinder 5 is connected to the internal chamber of the water tank via a manual inflation valve 1 made of GSI-400 type 316 stainless steel.

[0027] Secondly, to achieve a closed-loop transportation process for the water tank from the reservoir surface to underwater, then to the water lifting channel, and finally back, this invention designs a closed-loop track transportation unit. Please refer to the following for details. Figure 3The unit includes an underwater tracked conveyor mechanism 6 located at the bottom of the reservoir and a top return groove 15 located at the top of the vertical pressurized water column unit and connected to the reservoir operation platform. In this embodiment, the underwater tracked conveyor mechanism 6 is divided into three sections according to the actual engineering distance, each section being 5 meters long. Each section adopts a structure with double tracks arranged symmetrically in the center. The track plates are made of polyurethane composite 316 stainless steel to ensure wear resistance and corrosion resistance in the high humidity underwater environment. The matching tensioning device, drive wheel, guide wheel, and support wheel are all made of 316 stainless steel. The specifications of a single track are 5.0 meters × 0.8 meters × 0.6 meters. To ensure the reliability and independence of the conveying, each track section is equipped with an independent tracked power system 7. This system specifically includes a hydraulic motor, a dual-pump hydraulic system, a DC48V waterproof motor with IP68 protection rating, and a DC48V / 200Ah lithium battery pack to power the motor. Meanwhile, the top return groove 15 is made of 304 stainless steel. Its groove is 5.5 meters wide and 2 meters deep. One end of the groove is connected to the top outlet of the vertical pressurized water column cylinder 12, and the other end is connected to the water tank recovery position of the reservoir operation platform. Furthermore, a polyurethane anti-collision buffer structure is installed 5 meters from the end of the groove, thus forming a complete closed-loop operation track.

[0028] To safely and securely transport a fully loaded water tank from an atmospheric pressure reservoir environment to a high-pressure water extraction environment, this invention designs a key transition structure: a staged sealing gate unit. Please continue reading. Figure 3 This unit includes three layers of gates 8 arranged sequentially along the conveyor belt direction. Each gate is made of 316 stainless steel, with a single gate measuring 5 meters high, 5 meters wide, and 10 millimeters thick. The three layers of gates, along the water tank's operating direction, sequentially divide the tank into a reservoir-side transition chamber, an intermediate sealing chamber, and a water column-side access chamber. Each set of gates is equipped with a gate control device 9, which specifically includes a D371F-16P centerline butterfly valve and an STV-1000 series partial rotary electric actuator for remote and precise control of the opening and closing of the gates 8. During operation, a tiered opening and closing logic—"opening the first gate, closing it to balance the pressure, and then opening the second gate"—achieves progressive pressure isolation and balance between adjacent chambers, ensuring that the high-pressure water within the vertical pressurized water column unit does not leak while guaranteeing the smooth passage of the water tank.

[0029] As the core channel for the water tank's upward buoyancy, the vertical pressurized water column unit adopts a vertical fiberglass cylindrical structure. The cylinder has an inner diameter of 6 meters, a height of 30 meters, and a wall thickness of 20 millimeters, capable of withstanding the pressure generated by a 30-meter water column. The bottom of the cylinder is fitted with an integrally bonded flange made of 316 stainless steel to ensure structural strength and sealing. A 5m x 5m docking interface is located on the side of the bottom of the cylinder, seamlessly connecting to the water column side inlet cavity of the aforementioned graded sealing gate unit. The top of the cylinder features the water tank inlet and outlet, which communicate with the aforementioned top return groove 15. The interior of the cylinder is a pressurized water chamber filled with water, providing directional guidance for the water tank's vertical upward buoyancy throughout the process.

[0030] In addition, to maintain system circulation, an air supply unit is installed on the reservoir operating platform, specifically including a low-pressure air compressor 10 and a cylinder replacement robotic arm 11. The low-pressure air compressor 10 is used to refill the high-pressure cylinder 5 after use, while the cylinder replacement robotic arm 11 is used to automatically disassemble and reinstall the high-pressure cylinder 5 on the top of the pressurized water tank on the operating platform. At the same time, at the top of the vertical pressurized water column cylinder 12, a water pumping device 13 and a water tank transfer robotic arm 14 are also installed, used to pump out the water in the water tank that has floated to the top, and to transfer the empty water tank from the top of the cylinder to the top return groove 15, respectively.

[0031] All the aforementioned power components, actuators, and valves are centrally controlled by a single automatic control unit. This automatic control unit, using a PLC control cabinet, is electrically connected to the track power system 7, the water tank electric actuator 2, the gate control device 9, the manual inflation valve 1, the gas cylinder replacement robotic arm 11, and the pumping equipment 13. The control unit has a pre-set full-process timing control program to achieve fully automated closed-loop operation from water tank filling, sinking, gate passage, pneumatic buoyancy, drainage, to empty tank recovery.

[0032] The specific operation process of this embodiment is described in detail below. First, an empty water tank is placed on the reservoir operating platform. The automatic control unit instructs the gas cylinder replacement robotic arm 11 to install a pre-filled high-pressure gas cylinder 5 on the top of the water tank. Subsequently, the automatic control unit remotely activates the water tank electric actuator 2 at the bottom filling port of the water tank, and water from the reservoir flows naturally into the water tank under gravity until the water tank is full, at which point the filling port is closed. The water-filled tank then sinks to the starting end of the tracked conveyor mechanism 6 at the bottom of the reservoir under its own weight.

[0033] Next, the tiered gate delivery stage begins. The automatic control unit controls the three gates 8 to open and close in stages: First, the first gate on the reservoir side is opened, and the water tank enters the reservoir-side transition chamber driven by the crawler conveyor mechanism 6, then the first gate is closed. After the pressure in the intermediate sealed chamber is balanced with the reservoir-side transition chamber through a minor leak or balancing pipeline, the second gate is opened, the water tank enters the intermediate sealed chamber, and the second gate is closed. Finally, after the pressure in the water column-side access chamber is balanced with the intermediate sealed chamber, the third gate is opened, the water tank enters the bottom of the vertical pressurized water column cylinder 12, and the third gate is closed. Through this process, pressure isolation between adjacent chambers is maintained throughout, preventing severe leakage of high-pressure water within the water column.

[0034] Once the water tank reaches the bottom of the cylinder, the crucial water-lifting process begins. The automatic control unit opens the manual inflation valve 1, rapidly releasing high-pressure gas from the high-pressure gas cylinder 5 into the water tank, forcing the existing water out through the bottom filling port. As the water is expelled, the overall average density of the water tank decreases, and the buoyancy increases dramatically. When the buoyancy exceeds the tank's own weight and the resistance of the upward-moving water, the water tank begins to rise vertically along the vertical pressurized water column cylinder 12, eventually reaching the top of the cylinder quickly, thus lifting the water to a height of 30 meters in one go.

[0035] Once the water tank reaches the top of the cylinder, the top pumping device 13 is activated to extract all remaining water from the tank through the suction port at the top and discharge it to the target water-using end. After drainage, the empty water tank is transferred by the water tank transfer robotic arm 14 to the top return groove 15. Due to the slope of the groove, the empty water tank automatically slides back / is transported back to the water tank recovery position on the reservoir operation platform under the action of gravity or slight auxiliary power.

[0036] Returning to the empty water tank on the work platform, the used high-pressure gas cylinder is removed via the gas cylinder replacement robotic arm 11, and a new gas cylinder, refilled with gas by the low-pressure air compressor 10, is installed. This completes one work cycle. Repeating these steps enables continuous, closed-loop water lifting operations.

[0037] In actual engineering tests, the water lifting system of this embodiment maintains a stable operating efficiency of 84% under rated operating conditions. Compared with traditional pumping stations of the same scale, it reduces operating energy consumption by 22%, maintenance costs by 65%, and ensures stable water flow, enabling continuous 24-hour operation. Furthermore, to achieve continuous water lifting with a larger flow rate, the system can be configured with four pressurized water tanks, arranged sequentially along a closed-loop track. Through the time-coordinated control of the automatic control unit, uninterrupted water lifting operations are achieved: when tank 1 is in the upward lifting stage within the vertical pressurized water column, tank 2 is in the staged gate conveying stage, tank 3 is in the reservoir filling and sinking stage, and tank 4 is in the top return and recovery stage. The four tanks operate alternately in a cyclical manner, achieving an hourly water lifting flow rate of over 400 cubic meters, which can fully meet the water lifting needs of large irrigation areas and small to medium-sized pumped storage power stations.

[0038] In summary, through the specific structure and workflow described above, this invention successfully realizes a highly efficient, continuous, and closed-loop water lifting scheme powered by high-pressure gas and carried by a sealed water tank, which has extremely high practical value and broad application prospects.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0041] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A novel multi-gate air-filled valve water lifting system, characterized in that, include: A closed-loop track conveying unit is used to provide a continuous conveying path for the water tank from the water intake end to the water lifting end and back to the water intake end; The water tank lifting unit includes a pressurized water tank for carrying water, and a high-pressure gas cylinder installed on the pressurized water tank for providing buoyancy driving force. The graded sealing gate unit includes at least three gates arranged sequentially along the conveying direction, which are used to gradually build up and isolate pressure when the water tank passes through, forming a sealed channel connecting the closed-loop track conveying unit and the vertical pressurized water column unit. The vertical pressurized water column unit is a vertically arranged pressurized cylinder, which forms an internal directional water chamber for the water tank to float. The closed-loop track conveying unit transports a water tank fully loaded with water to the bottom of the vertical pressurized water column unit via the graded sealing gate unit. The high-pressure gas cylinder releases gas to drive the water tank to float up within the vertical pressurized water column unit to complete the water lifting.

2. The novel multi-gate air-filled valve water-lifting system according to claim 1, characterized in that, The closed-loop track conveying unit includes an underwater track conveying mechanism located at the bottom of the water body, and a top return groove located at the top of the vertical pressurized water column unit and connected to the water intake end; the underwater track conveying mechanism includes multiple independently driven track assemblies, each track assembly being equipped with an independent waterproof power system.

3. The novel multi-gate air-filled valve water-lifting system according to claim 2, characterized in that, The underwater tracked conveyor is divided into three sections, each of which uses two tracks arranged symmetrically in the center; the tracked power system includes a hydraulic motor, a dual-pump hydraulic system, a waterproof motor, and a lithium battery pack that powers the waterproof motor.

4. The novel multi-gate air-filled valve water-lifting system according to claim 1, characterized in that, The water tank lifting unit also includes a water inlet located at the bottom of the pressurized water tank and an electric actuator for controlling its opening and closing, as well as a water outlet located at the top of the pressurized water tank; the high-pressure gas cylinder is detachably installed on the top of the pressurized water tank and is connected to the gas passage of the internal chamber of the water tank through an air filling valve assembly.

5. The novel multi-gate air-filled valve water lifting system according to claim 1, characterized in that, The three gates of the graded sealing gate unit are sequentially divided along the running direction of the water tank to form a reservoir-side transition chamber, an intermediate sealing chamber, and a water column-side access chamber. Each gate is equipped with an independent gate control device, which realizes pressure balance and isolation between adjacent chambers through graded opening and closing to ensure the water sealing of the vertical pressurized water column unit.

6. The novel multi-gate air-filled valve water-lifting system according to claim 1, characterized in that, The vertical pressurized water column unit adopts a cylindrical structure made of fiberglass. Its bottom side is provided with a docking interface that communicates with the graded sealing gate unit, and its top is provided with a water outlet that communicates with the closed-loop track conveying unit.

7. The novel multi-gate air-filled valve water lifting system according to claim 1, characterized in that, It also includes an automatic control unit, which is electrically connected to the closed-loop track conveying unit, the water tank electric actuator, the graded sealing gate unit, and the air valve assembly, respectively, and is used to control the entire process of water tank filling, sinking, conveying, floating, draining and recycling, so as to realize the automatic closed-loop timing control of the system.

8. The novel multi-gate air-filled valve water lifting system according to claim 7, characterized in that, The inflation valve assembly is also equipped with a pressure sensor and a flow regulating valve. The automatic control unit dynamically adjusts the opening of the flow regulating valve according to the air pressure signal fed back by the pressure sensor, so as to control the amount of high-pressure gas released and make the pressurized water tank float up at a uniform speed.

9. The novel multi-gate air-filled valve water lifting system according to claim 1, characterized in that, The system includes at least two water tank lifting units that work together. The automatic control unit controls the operating sequence of each water tank, so that different water tanks are in the stages of filling and submerging, gate conveying, pneumatic floating and empty tank recovery, respectively, to achieve continuous and uninterrupted water lifting.

10. A water lifting method based on the novel multi-gate air-filled valve water lifting system according to any one of claims 1 to 9, characterized in that, Includes the following steps: After filling the empty water tank containing the high-pressure gas cylinder with water, it sinks to the bottom of the water intake end at the starting position of the conveying process by its own weight. The three-stage gate is controlled to open and close in stages, and the fully loaded water tank is transported to the bottom of the cylinder of the vertical pressurized water column unit while maintaining pressure isolation. Open the inflation valve and use the gas released from the high-pressure gas cylinder to force the water out of the water tank, so that the water tank floats vertically to the top along the pressurized water column under the drive of buoyancy, thus completing the water lifting. The empty water tank, after being drained, is transported back to the water intake end via the top return track, and the high-pressure gas cylinder is replaced to begin the next water lifting cycle.

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