A deep-sea micro-flow eel type power generation device

Abstract

The application discloses a deep-sea micro-flow eel type power generation device and relates to the technical field of power generation devices. The device comprises a cylindrical floating body fixed on a seabed, a vortex-induced vibration assembly rotatably connected to the top of the cylindrical floating body, a floating plate assembly hingedly connected to the tail end of the vortex-induced vibration assembly, a hydraulic cylinder arranged on the floating plate assembly, and a hydraulic rod of the hydraulic cylinder capable of being driven by the floating plate assembly to extend or retract. The hydraulic oil ports at the two ends of the hydraulic cylinder are connected with a hydraulic power generation system. The device can provide power supply for underwater electromechanical devices, has simple structure, is convenient to carry, and will not generate great hydrodynamic effect on a carrying platform.

Description

Technical Field

[0001] This invention relates to the field of power generation technology, and in particular to a deep-sea micro-flow eel-type power generation device. Background Technology

[0002] Currently, underwater electromechanical devices mainly include underwater autonomous robots, underwater unmanned vehicles, buoy monitoring systems, and underwater wireless sensors. Most of these devices need to operate in aquatic environments for extended periods, placing high demands on their power endurance. Traditional power supply methods mainly include cable-based power supply and battery pack power supply. However, cable-based power supply limits the flexibility of the device due to the length of the cable, and the plug-in interface poses a risk of leakage and short circuit in underwater conductive environments. Battery pack power supply is limited by its size and has limited energy capacity, still requiring salvage and recovery equipment for battery replacement, which affects work efficiency and wastes labor costs. Summary of the Invention

[0003] The purpose of this invention is to provide a deep-sea micro-current eel-type power generation device to solve the problems existing in the prior art. It can provide power for underwater electromechanical devices, has a simple structure, is easy to install, and will not have a large hydrodynamic effect on the mounting platform.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a deep-sea micro-current eel-type power generation device, comprising a cylindrical float fixed to the seabed, a vortex-induced vibration assembly rotatably connected to the top of the cylindrical float, a float plate assembly hinged to the end of the vortex-induced vibration assembly, a hydraulic cylinder provided on the float plate assembly, and a sealing treatment measure, the float plate assembly being able to drive the hydraulic rod of the hydraulic cylinder to extend and retract; the hydraulic oil ports at both ends of the hydraulic cylinder are respectively connected to a hydraulic power generation system.

[0006] Optionally, the bottom of the cylindrical float is fixed to the seabed by mooring cables, which are four fixed anchor chains. The upper end of each fixed anchor chain is connected to a cylindrical float by an alloy component, and the lower end is fixed to the seabed. The cylindrical float generates positive buoyancy, keeping the anchor chains in a taut state.

[0007] Optionally, a rotating base is fixedly connected to the top of the cylindrical float, a rotating bearing is provided on the rotating base, a rotating shaft is rotatably arranged inside the rotating bearing, a connecting plate is fixedly provided on the top of the rotating shaft, and the connecting plate is connected to the vortex-induced vibration assembly.

[0008] Optionally, the vortex-induced vibration assembly includes a horizontally arranged cylindrical pressure tank, which houses a hydraulic power generation system including a hydraulic motor, accumulator, and generator. The cylindrical pressure tank employs a mechanical seal with an annular sealing rubber ring at the sealing interface to provide buoyancy to the entire power generation device. Both ends of the cylindrical pressure tank are connected to the connecting plate via springs. The outer wall of the cylindrical pressure tank is hinged to the float assembly, and the outer sidewall of the cylindrical pressure tank is connected to the first float. Both ends of the cylindrical pressure tank are connected to the rotating base via springs. When the ocean current passes through the cylindrical pressure tank, since the pressure tank is connected to the springs and is floating, vortex-induced vibration is generated, forming a wake field. This drives the float behind the pressure tank to move, and the float behind the pressure tank can swing up and down under the action of the ocean current, thereby pushing the hydraulic cylinder above the float to move. This converts the kinetic energy of the float into hydraulic energy, which can then be converted into electrical energy through the hydraulic power generation system.

[0009] Optionally, the float assembly includes multiple floats that are hinged together in sequence. The floats are in the form of a frame and are filled with standard marine buoyancy material. The floats are designed as arc-shaped plates and have a streamlined metal shell. A hydraulic cylinder is fixedly mounted on the float by a support. The hydraulic rod of the hydraulic cylinder on the float is hinged to the adjacent float by a fisheye bearing.

[0010] Optionally, counterweights are symmetrically arranged at both ends of the float.

[0011] Optionally, the hydraulic power generation system includes a hydraulic bridge circuit, which includes a first flow branch, a second flow branch, a third flow branch, and a fourth flow branch. The hydraulic oil port at one end of the hydraulic cylinder is connected to one end of the first and second flow branches via pipelines, and the hydraulic oil port at the other end of the hydraulic cylinder is connected to one end of the third and fourth flow branches via pipelines. The other ends of the first and third flow branches are sequentially connected to an overflow valve and a throttle valve via a first pipeline equipped with an accumulator. The throttle valve is connected to a hydraulic motor via a coupling, and the hydraulic motor is connected to a generator. The other ends of the second and fourth flow branches are connected to a filter via a second pipeline equipped with an accumulator. The filter is connected to the end of the hydraulic motor furthest from the coupling. The second pipeline between the filter and the hydraulic motor is connected to an oil tank. One-way valves are respectively installed on the first, second, third, and fourth flow branches.

[0012] The present invention achieves the following technical effects compared to the prior art:

[0013] The deep-sea micro-flow eel-type power generation device provided by this invention can operate and generate electricity entirely underwater, achieving a breakthrough in domestic underwater micro-flow power generation technology from scratch; the device can generate electricity using near-shore waves and deep-sea micro-flows, demonstrating the versatility of marine energy utilization; it can adapt to different sea areas and depths, with adjustable operating depth; it can meet the requirements for low-flow-rate start-up, possessing adaptability to a wide range of flow rates. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram of the overall structure of the deep-sea micro-flow eel-type power generation device of the present invention;

[0016] Figure 2 This is a side view of the overall structure of the deep-sea micro-flow eel-type power generation device of the present invention;

[0017] Figure 3 This is a top view of the overall structure of the deep-sea micro-flow eel-type power generation device of the present invention;

[0018] Figure 4 This is a schematic diagram of the working principle of the hydraulic power generation system of the deep-sea micro-flow eel-type power generation device of the present invention;

[0019] In the diagram: 1-Mooring cable, 2-Cylindrical float, 3-Rotating base, 4-Spring, 5-Cylindrical pressure chamber, 6-Float, 7-Hydraulic cylinder, 8-Float counterweight, 9-Rotating bearing, 10-Hydraulic rod, 11-Fisheye bearing, 12-Oil tank, 13-Hydraulic motor, 14-Generator, 15-Coupling, 16-Throttle valve, 17-Relief valve, 18-Accumulator, 19-Hydraulic bridge circuit, 20-Filter. Detailed Implementation

[0020] 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.

[0021] The purpose of this invention is to provide a deep-sea micro-current eel-type power generation device to solve the problems existing in the prior art. It can provide power for underwater electromechanical devices, has a simple structure, is easy to install, and will not have a large hydrodynamic effect on the mounting platform.

[0022] 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.

[0023] This invention provides a deep-sea micro-current eel-type power generation device, such as... Figures 1-4 As shown, the device includes a cylindrical float 2 fixed to the seabed. A vortex-induced vibration assembly is rotatably connected to the top of the cylindrical float 2. A float plate assembly is hinged to the end of the vortex-induced vibration assembly. A hydraulic cylinder 7 is provided on the float plate assembly, which can drive the hydraulic rod 10 of the hydraulic cylinder to extend and retract. The hydraulic oil ports at both ends of the hydraulic cylinder 7 are respectively connected to a hydraulic power generation system. This invention solves the limitations of traditional power supply methods and improves the flexibility and endurance of underwater electromechanical devices. The device of this invention has a simple structure, moves slowly, and is relatively environmentally friendly. It also does not need to consider cavitation erosion and noise problems, has a certain degree of concealment, and will not have a large hydrodynamic effect on the platform. It can be used to solve the power needs of small platforms.

[0024] Specifically, such as Figure 1 and Figure 2 As shown, the cylindrical float 2 is fixed to the seabed by mooring cables 1. The rotating base 3 is welded to the top of the cylindrical float 2. The rotating base allows the entire device to rotate freely via rotating bearings 9, adjusting the device's upstream face to adapt to different incoming flow conditions. The cylindrical pressure chamber 5 of the vortex-induced vibration assembly is connected to the rotating base 3 by two springs 4. The cylindrical pressure chamber 5 can generate vortex-induced vibration under incoming flow conditions via the springs 4. Figure 2 The direction of the middle arrow indicates the incoming flow direction, which drives the movement of the float 6 of the subsequent float assembly. Float 6 has float counterweights 8 at both ends. Float 6 is connected to the cylindrical shell pressure chamber 5 via a hinge, and floats 6 are also connected to each other via hinges. The hydraulic cylinder 7 above float 6 is fixed to float 6 by a support, and the hydraulic rod 10 of the hydraulic cylinder 7 on the rear float 6 is hinged to the preceding float 6 via a fisheye bearing 11. This allows the hydraulic rod 10 to perform only linear motion when float 6 moves around the hinge point, thus generating hydraulic power. Figure 4 The hydraulic systems shown are all placed inside the cylindrical shell pressure chamber 5 and sealed.

[0025] like Figure 4As shown, the working principle of the hydraulic power generation system is further described. When the oil in the left side of the hydraulic cylinder 7 is compressed, the volume of the left chamber decreases, and the oil is forced out of the hydraulic cylinder 7. The oil flows through the pipeline and through the hydraulic bridge 19 before flowing out. After the action of the accumulator 18, the pressure and flow rate in the pipeline are stabilized, and then the flow rate is controlled by the relief valve 17 and the throttle valve 16. The coupling 15 connects to the hydraulic motor 13 to transmit torque. The hydraulic motor 13 converts hydraulic energy into mechanical energy to drive the generator 14 to generate electricity. Excess oil flows back to the oil tank 12. Due to the increase in volume and decrease in pressure of the right chamber, the oil is filtered by the filter 20 and stabilized by the pressure of the accumulator 18 before flowing back to the right chamber of the hydraulic cylinder 7. When the oil in the right side of the hydraulic cylinder 7 is compressed, the volume of the right chamber decreases, causing oil to be drawn into the left chamber and the oil in the right chamber to be forced out. The hydraulic fluid flows out through the hydraulic bridge 19, passes through the accumulator 18, then through the relief valve 17 and the throttle valve 16, and the coupling 15. Finally, the hydraulic motor 13 outputs mechanical energy to drive the generator 14 to generate electricity. Due to the suction effect of the left chamber of the hydraulic cylinder 7, the hydraulic fluid flows back to the left chamber through the filter 20 and the hydraulic bridge 19. Through the diversion effect of the hydraulic bridge 19, the hydraulic motor can rotate in the forward direction regardless of whether the hydraulic rod 10 moves to the left or right, enabling the system to generate electricity stably.

[0026] In the description of this invention, it should be noted that the terms "center," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A deep-sea micro-current eel-type power generation device, characterized in that: The system includes a cylindrical float fixed to the seabed, with a vortex-induced vibration assembly rotatably connected to its top. A float plate assembly is hinged to the end of the vortex-induced vibration assembly, and a hydraulic cylinder is mounted on the float plate assembly, enabling the float plate assembly to extend and retract the hydraulic rod of the hydraulic cylinder. Hydraulic ports at both ends of the hydraulic cylinder are connected to a hydraulic power generation system. A rotating base is fixedly connected to the top of the cylindrical float, and a rotating bearing is mounted on the rotating base. A rotating shaft is rotatably mounted within the rotating bearing, and a connecting plate is fixedly mounted on the top of the rotating shaft, connecting to the vortex-induced vibration assembly. The vortex-induced vibration assembly includes a horizontally arranged cylindrical pressure chamber, with both ends of the pressure chamber connected to the connecting plate via springs. The outer wall of the pressure chamber is hinged to the float plate assembly. The hydraulic power generation system includes a hydraulic bridge circuit, which includes a first flow branch and a second flow branch. The system comprises a first flow branch, a third flow branch, and a fourth flow branch. The hydraulic oil port at one end of the hydraulic cylinder is connected to one end of the first flow branch and one end of the second flow branch via pipelines. The hydraulic oil port at the other end of the hydraulic cylinder is connected to one end of the third flow branch and one end of the fourth flow branch via pipelines. The other ends of the first and third flow branches are connected in sequence to an overflow valve and a throttle valve via a first pipeline equipped with an accumulator. The throttle valve is connected to a hydraulic motor via a coupling, and the hydraulic motor is connected to a generator. The other ends of the second and fourth flow branches are connected to a filter via a second pipeline equipped with an accumulator. The filter is connected to the end of the hydraulic motor furthest from the coupling. The second pipeline between the filter and the hydraulic motor is connected to an oil tank. One-way valves are respectively installed on the first, second, third, and fourth flow branches.

2. The deep-sea micro-current eel-type power generation device according to claim 1, characterized in that: The bottom of the cylindrical float is fixed to the seabed by mooring cables.

3. The deep-sea micro-current eel-type power generation device according to claim 1, characterized in that: The float assembly includes multiple floats that are hinged together in sequence. A hydraulic cylinder is fixedly mounted on each float by a support. The hydraulic rod of the hydraulic cylinder on the float is hinged to the adjacent float via a fisheye bearing.

4. The deep-sea micro-current eel-type power generation device according to claim 3, characterized in that: The float plate is symmetrically equipped with float plate counterweights at both ends.

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