An Argo float with a hydro wheel energy harvesting system

Abstract

The present application relates to the technical fields of ocean exploration and energy recovery, and particularly relates to an Argo buoy with a water wheel energy collection system. It comprises a buoy body, wherein the buoy body comprises a buoy shell and a plurality of tail wings arranged at the bottom of the buoy shell, an upper cabin and a lower cabin are arranged in the buoy shell from top to bottom, a satellite communication module, an environment monitoring module and a motion control module are arranged in the upper cabin, and a hydraulic energy conversion system is arranged in the lower cabin. The structure design is reasonable, the buoyancy of the Argo buoy is adjusted by using an oil tank, the working mode of the water turbine is adopted, the function of peak clipping and valley filling is achieved, the unstable wave energy is converted into hydraulic energy, and then the stable energy is supplied to the Argo buoy, so that the stability is improved.

Description

Technical Field

[0001] This invention relates to the field of marine exploration and energy recovery technology, and in particular to an Argo buoy with a water turbine energy harvesting system. Background Technology

[0002] The Argo program is a global ocean observation and experimentation project that deploys thousands of buoys in major ocean areas around the world. Its aim is to collect accurate upper-layer seawater temperature and salinity profiles over a wide area to improve the accuracy of climate forecasts, thereby effectively mitigating the threats posed by increasingly severe global climate disasters and providing assistance to human production and daily life. Traditional Argo buoys are powered by batteries, with a typical lifespan of 2-5 years. Therefore, researchers have had to consider incorporating more batteries to extend the lifespan of Argo buoys. However, this has made the Argo buoys more bulky and further increased the difficulty and cost of manufacturing them.

[0003] The ocean contains vast energy resources, such as wind energy, wave energy, tidal energy, thermal gradient energy, and salinity gradient energy. Among these, wave energy is increasingly being developed and utilized by researchers due to its advantages of large reserves, wide distribution, and long operating time. Wave energy is used to power Argo buoys, thereby extending their operational lifespan. For example, patent publication number CN109823479A describes a wave energy-based Argo buoy where the wave energy generation module is built into the shell. The module includes a stator and a mover. When the buoy is on the water surface, the up-and-down movement of the waves causes the buoy to move vertically. The mover oscillates vertically under inertia, causing the mover and stator to reciprocate in a linear motion, thus cutting the coil windings to generate electricity, which is then stored in a battery. However, in practical use, the relative motion amplitude between the stator and mover in this device's power generation module is limited, directly resulting in low power output.

[0004] In addition, for example, an inertial wave energy-powered buoy with patent publication number CN112576430A converts the back-and-forth oscillation of an inertial pendulum driven by waves into back-and-forth rotation output, which is then converted into unidirectional rotation by a direction-changing mechanism, driving a generator to generate electricity. However, the mechanical components of the inertial pendulum and other power generation devices in this device suffer from severe wear and corrosion, and the power generation efficiency is low, resulting in poor continuous power supply.

[0005] In conclusion, utilizing ocean energy for continuous and sustainable self-recharging, thereby significantly reducing the processing difficulty and manufacturing cost of Argo buoys, is an important way to extend their service life. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention provides an Argo buoy with a hydroelectric energy harvesting system. Its rationally designed structure uses oil pumps to adjust the buoyancy and employs a hydroelectric turbine for power supply, effectively smoothing out peak and valley energy fluctuations. It collects unstable wave energy and converts it into hydraulic energy, thus providing a stable power supply to the Argo buoy and improving its stability. By expanding the energy harvesting methods of the hydroelectric turbine, when the Argo buoy oscillates with the waves on the sea surface, the turbine can collect wave energy generated by smaller waves. When the buoy submerges, the turbine is impacted by seawater, allowing it to collect the kinetic energy of the seawater. This increased energy harvesting method better replenishes the Argo buoy's energy, is energy-efficient, ensures a stable energy supply, extends the Argo buoy's service life, and improves its operational efficiency at sea, solving problems encountered in practical use.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0008] An Argo buoy with a hydroelectric energy harvesting system includes a buoy body, which includes a buoy shell and several tail fins located at the bottom of the buoy shell. Inside the buoy shell, there are an upper compartment and a lower compartment from top to bottom. The upper compartment houses a satellite communication module, an environmental monitoring module, and a motion control module. The lower compartment houses a hydraulic energy conversion system. A hydroelectric turbine is located below the buoy body, and the hydroelectric turbine is connected to the buoy body through a distance adjustment mechanism.

[0009] Optionally, the distance adjustment mechanism includes a buoy support frame fixedly attached to the outer wall of the buoy shell, and a turbine support frame provided on the outer wall of the turbine at the corresponding buoy support frame position. The turbine support frame is connected to the buoy support frame on the corresponding side by telescopic hydraulic cylinders on both sides.

[0010] Optionally, the turbine includes a turbine housing, with a groove on the inner wall of the turbine housing along its circumference. A cylindrical shell is movably engaged in the groove of the turbine housing. A turbine shaft is arranged coaxially inside the cylindrical shell. A plurality of fan blades are evenly arranged on the outer wall of the turbine shaft along its circumference, and each fan blade is connected to the cylindrical shell. A bracket connected to the inner wall of the upper part of the turbine housing is provided, and the upper end of the turbine shaft is movably engaged in the bracket.

[0011] Optionally, the system also includes an angle adjustment mechanism. The angle adjustment mechanism includes several semi-circular grooves on the inner wall of the cylindrical shell corresponding to the positions of each fan blade. Each fan blade has a horizontally movable retaining tube that passes through it along its length. The inner end of each retaining tube is movably engaged with the side wall of the turbine shaft, and its outer end is movably engaged with the inner wall of the semi-circular groove at the center of the corresponding side. Each fan blade side wall facing the cylindrical shell is provided with a magnet, which is located on the outer wall of the fan blade away from the retaining tube. Several electromagnets are spaced apart along the circumference in the semi-circular groove corresponding to the position of the magnet. Each electromagnet is connected by a wire installed in the cylindrical shell. The outer end of each wire passes through the retaining tube on the corresponding side and merges into the turbine shaft. It then passes upward through the turbine shaft and the bottom plate of the lower compartment and connects to the motion control module installed in the upper compartment.

[0012] Optionally, a waterproof layer is coated on the cylindrical shell.

[0013] Optionally, the hydraulic energy conversion system includes an energy harvesting circuit, a turbine telescopic circuit, and an oil pan.

[0014] The energy harvesting circuit includes an energy harvesting hydraulic pump. The input shaft of the energy harvesting hydraulic pump is connected to the turbine shaft via a coupling. The energy harvesting hydraulic pump is connected to the support via a pump frame. The lower end of the coupling moves through the support and is connected to the turbine shaft. The energy harvesting hydraulic pump is connected to an oil tank located in the lower compartment via an oil inlet pipe. Its oil outlet pipe goes upward into the lower compartment and passes through a rectifier valve group, a first solenoid directional valve, and a throttle valve located on the oil tank in sequence, and is connected to the accumulator. The rectifier valve group includes a first check valve, a second check valve, a third check valve, and a fourth check valve.

[0015] The turbine telescopic circuit includes a second electromagnetic directional valve installed in the lower compartment. The inlet pipes of each telescopic hydraulic cylinder are connected to the oil tank, and their outlet pipes are connected to a throttle valve and an accumulator in sequence via the second electromagnetic directional valve.

[0016] The oil container is located on the upper part of the outer wall of the buoy machine. The oil outlet pipe of the oil container is connected to the throttle valve and the accumulator in sequence via the third electromagnetic reversing valve, and its oil inlet pipe is connected to the oil tank via the fourth electromagnetic reversing valve.

[0017] Optionally, it also includes a backup power circuit, which includes a backup hydraulic pump and a backup motor installed in the lower compartment. The input shaft of the backup hydraulic pump is connected to the rotating shaft of the backup motor, the oil inlet pipe of the backup hydraulic pump is connected to the oil tank, and its oil outlet pipe is connected in sequence to the fifth check valve, the fifth electromagnetic commutator, the throttle valve, and the accumulator.

[0018] Optionally, a bellows is fitted onto the inlet and outlet pipes of the energy harvesting hydraulic pump. The upper end of the bellows is sealed to the lower compartment, and the lower end is sealed to the energy harvesting hydraulic pump.

[0019] Optionally, the environmental monitoring module includes a depth sensor, a temperature sensor, and a salinity sensor.

[0020] The present invention, employing the above-mentioned technical solution, has the following advantages: It features a reasonable structural design; by using oil slicks to adjust the buoyancy of the Argo buoy and employing a turbine-powered operation, it achieves peak shaving and valley filling, collecting unstable wave energy and converting it into hydraulic energy, thereby providing a stable power supply to the Argo buoy and improving its stability; by expanding the energy collection methods of the turbine, when the Argo buoy oscillates with the waves on the sea surface, the turbine can collect the wave energy generated by smaller waves; when the buoy submerges, the turbine is impacted by seawater, and the turbine can collect the kinetic energy of the seawater at this time. The increased number of energy collection methods allows for better replenishment of the Argo buoy's power, is green and energy-saving, ensures the energy supply of the Argo buoy, extends its service life, and improves its working efficiency at sea. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 for Figure 1 A top-view structural diagram;

[0023] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the middle AA direction;

[0024] Figure 4 for Figure 1 A schematic diagram of the side view structure;

[0025] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0026] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure along the CC direction;

[0027] Figure 7 This is a three-dimensional structural diagram of a water turbine;

[0028] Figure 8 This is a schematic diagram of the three-dimensional structure of the cylindrical shell;

[0029] Figure 9 A three-dimensional structural diagram of the turbine shaft and fan blades;

[0030] Figure 10 This is a schematic diagram of the hydraulic energy conversion system of the present invention;

[0031] In the diagram, 1. Buoy outer shell; 2. Tail fin; 3. Upper compartment; 4. Lower compartment; 5. Satellite communication module; 6. Environmental monitoring module; 7. Motion control module; 8. Buoy support frame; 9. Turbine support frame; 10. Telescopic hydraulic cylinder; 11. Turbine outer shell; 12. Slot; 13. Cylindrical shell; 14. Turbine shaft; 15. Fan blade; 16. Bracket; 17. Semi-circular groove; 18. Pipe clamp; 19. Magnet; 20. Electromagnet; 21. Oil briquettes; 22. 1. Energy harvesting hydraulic pump; 23. Pump frame; 24. Oil tank; 25. First solenoid directional valve; 26. Throttle valve; 27. Accumulator; 28. First check valve; 29. ​​Second check valve; 30. Third check valve; 31. Fourth check valve; 32. Second solenoid directional valve; 33. Third solenoid directional valve; 34. Fourth solenoid directional valve; 35. Backup hydraulic pump; 36. Backup motor; 37. Fifth check valve; 38. Fifth solenoid directional valve; 39. Bellows. Detailed Implementation

[0032] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application; however, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0033] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and 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 this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0036] like Figure 1-10 As shown, an Argo buoy with a hydroelectric energy harvesting system includes a buoy body, which includes a buoy shell 1 and several tail fins 2 disposed at the bottom of the buoy shell 1. Inside the buoy shell 1, from top to bottom, there are an upper compartment 3 and a lower compartment 4. The upper compartment 3 is equipped with a satellite communication module 5, an environmental monitoring module 6, and a motion control module 7. The lower compartment 4 is equipped with a hydraulic energy conversion system. A hydroelectric turbine is disposed below the buoy body, and the hydroelectric turbine is connected to the buoy body through a distance adjustment mechanism.

[0037] Optionally, the distance adjustment mechanism includes a buoy support frame 8 fixedly attached to the outer wall of the buoy housing 1, and a turbine support frame 9 provided on the outer wall of the turbine at the position corresponding to the buoy support frame 8. The turbine support frame 9 is connected to the buoy support frame 8 on the corresponding side by telescopic hydraulic cylinders 10 arranged on both sides of it.

[0038] Optionally, the turbine includes a turbine housing 11, with a groove 12 on the inner wall of the turbine housing 11 along its circumferential direction. A cylindrical shell 13 is movably engaged in the groove 12 of the turbine housing 11. A turbine shaft 14 is arranged coaxially inside the cylindrical shell 13. A plurality of fan blades 15 are evenly arranged on the outer wall of the turbine shaft 14 along its circumferential direction, and each fan blade 15 is connected to the cylindrical shell 13. A bracket 16 connected to its inner wall is provided at the upper center of the turbine housing 11, and the upper end of the turbine shaft 14 is movably engaged in the bracket 16.

[0039] Optionally, it also includes an angle adjustment mechanism, which includes several semi-circular grooves 17 disposed on the inner wall of the cylindrical housing 13 corresponding to the positions of each fan blade 15. Each fan blade 15 has a horizontally movably inserted clamping tube 18 along its length. The inner end of each clamping tube 18 is movably engaged with the side wall of the turbine shaft 14, and its outer end is movably engaged with the inner wall of the semi-circular groove 17 at the center position on the corresponding side. On the side of each fan blade 15 facing the cylindrical housing 13... Magnets 19 are provided on the walls. The magnets 19 are located on the outer wall of the fan blades 15 on the side away from the clamp tube 18. Several electromagnets 20 are spaced apart along the circumference in the semi-circular groove 17 corresponding to the position of the magnet 19. Each electromagnet 20 is connected by a wire provided in the cylindrical shell 13. The outer end of each wire passes through the clamp tube 18 on the corresponding side and flows into the turbine shaft 14. It passes upward through the turbine shaft 14 and the bottom plate of the lower chamber 4 and connects to the motion control module 7 provided in the upper chamber 3.

[0040] Optionally, a waterproof layer is coated on the cylindrical shell 13.

[0041] Optionally, the hydraulic energy conversion system includes an energy harvesting circuit, a turbine telescopic circuit, and an oil pan 21.

[0042] The energy harvesting circuit includes an energy harvesting hydraulic pump 22. The input shaft of the energy harvesting hydraulic pump 22 is connected to the turbine shaft 14 via a coupling. The energy harvesting hydraulic pump 22 is connected to the support via a pump frame 23. The lower end of the coupling moves through the support 16 and is connected to the turbine shaft 14. The energy harvesting hydraulic pump 22 is connected to the oil tank 24 located in the lower compartment 4 via an oil inlet pipe. Its oil outlet pipe goes upward into the lower compartment 4 and is connected to the accumulator 27 via a rectifier valve group, a first electromagnetic reversing valve 25, and a throttle valve 26 located on the oil tank 24. The rectifier valve group includes a first check valve 28, a second check valve 29, a third check valve 30, and a fourth check valve 31.

[0043] The turbine telescopic circuit includes a second electromagnetic directional valve 32 installed in the lower compartment 4. The oil inlet pipes of each telescopic hydraulic cylinder 10 are connected to the oil tank 24, and their oil outlet pipes are connected to the throttle valve 26 and the accumulator 27 in sequence via the second electromagnetic directional valve 32.

[0044] The oil naan 21 is located on the upper part of the outer wall of the buoy machine body. The oil outlet pipe of the oil naan 21 is connected to the throttle valve 26 and the accumulator 27 in sequence via the third electromagnetic reversing valve 33, and its oil inlet pipe is connected to the oil tank 24 via the fourth electromagnetic reversing valve 34.

[0045] Optionally, it also includes a backup power circuit, which includes a backup hydraulic pump 35 and a backup motor 26 installed in the lower compartment 4. The input shaft of the backup hydraulic pump 35 is connected to the rotating shaft of the backup motor 26. The oil inlet pipe of the backup hydraulic pump 35 is connected to the oil tank 24, and its oil outlet pipe is connected in sequence to the fifth check valve 37, the fifth electromagnetic commutator 38, the throttle valve 26, and the accumulator 27.

[0046] Optionally, a bellows 39 is fitted onto the inlet and outlet pipes of the energy harvesting hydraulic pump 22. The upper end of the bellows 39 is sealed to the lower compartment 3, and its lower end is sealed to the energy harvesting hydraulic pump 22.

[0047] Optionally, the environmental monitoring module 6 includes a depth sensor, a temperature sensor, and a salinity sensor.

[0048] Optionally, the satellite communication module 5 can enable the buoy to exchange information and transmit control signals with the marine environmental monitoring station via satellite signals.

[0049] Optionally, the motion control module 7 controls the movement of the buoy body and the rotation of the turbine blades.

[0050] Each blade of the turbine can rotate both clockwise and counterclockwise, adapting to the complex and ever-changing ocean currents and thus better storing energy for the device. When the energy harvesting hydraulic pump 22 rotates in the forward direction, hydraulic oil flows from the oil tank 24 through the first check valve 28 in the rectifier valve group, the energy harvesting hydraulic pump 22, the second check valve 29 in the rectifier valve group, the first solenoid directional valve 25, and the throttle valve 26 into the accumulator 27, where the accumulator 27 stores hydraulic energy. When the energy harvesting hydraulic pump 22 rotates in the reverse direction, hydraulic oil flows from the oil tank 24 through the third check valve 30 in the rectifier valve group, the energy harvesting hydraulic pump 22, the fourth check valve 31 in the rectifier valve group, the first solenoid directional valve 25, and the throttle valve 26 into the accumulator 27, where the accumulator 27 stores hydraulic energy.

[0051] When the buoy body floats on the sea surface, the buoy body will rise and fall with the waves. The water flow impacts the turbine, which drives each fan blade 15 to rotate, thereby driving the energy harvesting hydraulic pump 22 to rotate. The hydraulic oil flows from the oil tank 24 to the accumulator 27, where the accumulator 27 stores the hydraulic energy.

[0052] As the buoy body descends, the oil reservoir 21 discharges hydraulic oil into the oil tank 24 through the fourth electromagnetic reversing valve 34. The volume of the oil reservoir 21 decreases, the buoy force received by the buoy body decreases, and the buoy body begins to descend. As the buoy body descends, the gravitational potential energy of the buoy body is converted into the kinetic energy of the buoy. The turbine is impacted by the seawater and continues to rotate, driving the energy collection hydraulic pump 22 to rotate. The hydraulic oil continuously flows from the oil tank 24 to the accumulator 27 to continue to replenish the energy of the accumulator 27.

[0053] When the buoy body rises, the first electromagnetic reversing valve 25 stops, and the accumulator 27 finishes replenishing energy. At this time, the second electromagnetic reversing valve 32 starts, controlling the oil flow of the telescopic hydraulic cylinder 10 back to the oil tank 24 through the motion control module 7, causing the telescopic hydraulic cylinder 10 to retract, thereby driving the turbine back to the bottom of the buoy shell 1. Under the action of the motion control module 7, the turbine blades 15 rotate to a vertical position to reduce motion resistance (the motion control module 7 controls the connection of electromagnets 20 at the same height in each semi-circular groove 17 through wires, causing the blades 15 to flip up and down along the clamp tube 18. When they move onto the energized electromagnet 20, the electromagnet 20 attracts the magnet on the blades 15, thereby fixing the position of the blades 15). At the same time, the third electromagnetic reversing valve 33 opens, allowing the accumulator 27 to supply liquid to the oil tank 21. As the volume of the oil tank 21 continues to increase, its buoyancy increases, driving the buoy body to rise.

[0054] When the buoy body resurfaces, the second solenoid directional valve 32 activates, causing hydraulic oil to flow from the accumulator 27 to the telescopic hydraulic cylinder 10, thus opening the telescopic hydraulic cylinder 10. After the telescopic hydraulic cylinder 10 is fully extended, the second solenoid directional valve 32 closes. Simultaneously, the motion control module 7 activates the first solenoid directional valve 25. As the turbine begins to rotate, hydraulic oil continues to flow from the oil tank 24 to the accumulator 27. The third solenoid directional valve 33 closes, and the accumulator 27 begins to replenish hydraulic energy.

[0055] It should be noted that when the accumulator 27 does not supply enough oil to the oil tank 21, the backup power circuit starts working. The backup motor 36 drives the backup hydraulic pump 35 to rotate, and the hydraulic oil flows through the oil tank 24, the fifth check valve 37, and the fifth solenoid directional valve 38 into the oil tank 21. When the buoy body is working normally, the fifth solenoid directional valve 38 is closed. Its reasonable structural design uses oil pumps to adjust the buoyancy of the Argo buoy and employs a turbine power supply mode, which has the function of peak shaving and valley filling. It collects unstable wave energy and converts it into hydraulic energy, thereby providing a stable power supply to the Argo buoy and improving its stability. By expanding the ways in which the turbine collects energy, when the Argo buoy oscillates with the waves on the sea surface, the turbine can collect the wave energy generated by smaller waves on the sea surface. When the buoy submerges, the turbine is impacted by the seawater, and the turbine can collect the kinetic energy of the seawater at this time. The increase in energy collection methods can better replenish the energy of the Argo buoy, making it green and energy-saving, ensuring the energy supply of the Argo buoy, extending the working life of the Argo buoy, improving the working efficiency of the Argo buoy at sea, and solving the problems existing in practical use.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention fall within the protection scope of the present invention.

[0057] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. An Argo buoy with a hydroelectric energy harvesting system, characterized in that, The buoy assembly includes a buoy shell and several tail fins located at the bottom of the buoy shell. Inside the buoy shell, from top to bottom, are an upper compartment and a lower compartment. The upper compartment houses a satellite communication module, an environmental monitoring module, and a motion control module. The lower compartment houses a hydraulic energy conversion system. A turbine is located below the buoy assembly. The turbine is connected to the buoy assembly via a distance adjustment mechanism, which includes a buoy support frame fixedly fastened to the outer wall of the buoy shell. A turbine support frame is located on the outer wall of the turbine corresponding to the buoy support frame. The turbine support frame is connected to the corresponding buoy support frame via telescopic hydraulic cylinders on both sides. The turbine includes a turbine casing with a groove on its inner wall along its circumference. A cylindrical shell is movably engaged in the groove of the turbine casing. A turbine shaft is coaxially arranged inside the cylindrical shell. Several fan blades are evenly arranged on the outer wall of the turbine shaft along its circumference, and each fan blade is connected to the cylindrical shell. A bracket connected to its inner wall is provided at the upper center of the turbine casing, and the upper end of the turbine shaft is movably engaged in the bracket. The hydraulic energy conversion system includes an energy harvesting circuit, a water turbine telescopic circuit, and an oil pan: The energy harvesting circuit includes an energy harvesting hydraulic pump. The input shaft of the energy harvesting hydraulic pump is connected to the turbine shaft via a coupling. The energy harvesting hydraulic pump is connected to the support via a pump frame. The lower end of the coupling moves through the support and is connected to the turbine shaft. The energy harvesting hydraulic pump is connected to an oil tank located in the lower compartment via an oil inlet pipe. Its oil outlet pipe goes upward into the lower compartment and passes through a rectifier valve group, a first solenoid directional valve, and a throttle valve located on the oil tank in sequence, and is connected to the accumulator. The rectifier valve group includes a first check valve, a second check valve, a third check valve, and a fourth check valve. The turbine telescopic circuit includes a second electromagnetic directional valve installed in the lower compartment. The inlet pipes of each telescopic hydraulic cylinder are connected to the oil tank, and their outlet pipes are connected to a throttle valve and an accumulator in sequence via the second electromagnetic directional valve. The oil container is located on the upper part of the outer wall of the buoy machine. The oil outlet pipe of the oil container is connected to the throttle valve and the accumulator in sequence via the third electromagnetic reversing valve, and its oil inlet pipe is connected to the oil tank via the fourth electromagnetic reversing valve.

2. The Argo buoy with a hydroelectric energy harvesting system according to claim 1, characterized in that, It also includes an angle adjustment mechanism, which includes several semi-circular grooves on the inner wall of the cylindrical shell corresponding to the positions of each fan blade. Each fan blade has a horizontally movable retaining tube that passes through the corresponding fan blade along its length. The inner end of each retaining tube is movably engaged with the side wall of the turbine shaft, and its outer end is movably engaged with the inner wall of the semi-circular groove at the center position of the corresponding side. Each fan blade side wall facing the cylindrical shell is provided with a magnet, which is located on the outer wall of the fan blade away from the retaining tube. Several electromagnets are spaced apart along the circumference in the semi-circular groove corresponding to the position of the magnet. Each electromagnet is connected by a wire provided in the cylindrical shell. The outer end of each wire passes through the retaining tube on the corresponding side and merges into the turbine shaft. It passes upward through the turbine shaft and the bottom plate of the lower compartment in sequence, and is connected to the motion control module provided in the upper compartment.

3. The Argo buoy with a hydroelectric energy harvesting system according to claim 1, characterized in that, A waterproof layer is applied to the cylindrical shell.

4. The Argo buoy with a hydroelectric energy harvesting system according to claim 1, characterized in that, It also includes a backup power circuit, which includes a backup hydraulic pump and a backup motor installed in the lower compartment. The input shaft of the backup hydraulic pump is connected to the rotating shaft of the backup motor, the oil inlet pipe of the backup hydraulic pump is connected to the oil tank, and its oil outlet pipe is connected in sequence to the fifth check valve, the fifth electromagnetic commutator, the throttle valve, and the accumulator.

5. The Argo buoy with a hydroelectric energy harvesting system according to claim 1, characterized in that, A corrugated pipe is fitted onto the inlet and outlet pipes of the energy harvesting hydraulic pump. The upper end of the corrugated pipe is sealed to the lower compartment, and the lower end is sealed to the energy harvesting hydraulic pump.

6. The Argo buoy with a hydroelectric energy harvesting system according to claim 1, characterized in that, The environmental monitoring module includes a depth sensor, a temperature sensor, and a salinity sensor.

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