Ocean current energy generation system

Abstract

The embodiment of the present application provides a sea current power generation system. The sea current power generation system comprises a column group stand, a floating plate assembly and an energy conversion device. The column group stand comprises a column stand and a sliding spoiler, the sliding spoiler is arranged on the column stand and can reciprocate, one end of the floating plate assembly is hinged on the sliding spoiler and can swing in the up-down direction relative to the column stand, the energy conversion device comprises a hydraulic power generation unit, a first hydraulic component and a second hydraulic component, the first hydraulic component is connected with the sliding spoiler and can stretch and contract under the reciprocation of the sliding spoiler, and the second hydraulic component is connected with the floating plate assembly and can stretch and contract under the swing of the floating plate assembly. Therefore, the sea current power generation system according to the embodiment of the present application has the advantages of improving the power generation efficiency and power density.

Description

Technical Field

[0001] This invention relates to the field of ocean current energy development technology, and specifically to an ocean current energy power generation system. Background Technology

[0002] In recent years, marine development has increasingly focused on the deep blue sea, leading to the development of various marine instruments and underwater electromechanical devices. These include underwater autonomous robots, unmanned underwater vehicles, buoy monitoring systems, and underwater wireless sensors. Most of these devices require extended operation in aquatic environments, placing high demands on their power endurance. Traditional power supply methods primarily include cable-based power and battery pack power. However, cable-based power supply limits the flexibility of underwater electromechanical devices due to cable length constraints. Furthermore, battery pack power is limited by size and energy capacity, necessitating retrieval and recovery equipment for battery replacement, impacting work efficiency and wasting labor costs.

[0003] In related technologies, deep-sea power generation devices are used to supply power to underwater electromechanical devices. These devices include float assemblies and hydraulic power generation systems. The float assemblies can swing due to the impact of sea waves. However, the electrical energy generated by the fluctuations of the float assemblies is limited, resulting in low overall power generation efficiency. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose an ocean current energy power generation system. This ocean current energy power generation system has the advantages of high power generation efficiency and high power density.

[0005] The ocean current energy power generation system of this invention includes a column support frame, a floating plate assembly, and an energy conversion device.

[0006] The column support structure includes a column frame and a sliding spoiler. The column frame is used to be installed on the seabed, and the sliding spoiler is installed on the column frame and can slide back and forth in the extension direction of the column frame. One end of the float assembly is hinged to the sliding spoiler and can swing in the vertical direction relative to the column frame. The float assembly includes a plurality of energy-absorbing floats connected in sequence along a first direction. The energy conversion device includes a power management system, a hydraulic power generation unit, a first hydraulic component, and a second hydraulic component. The power management system is electrically connected to the hydraulic power generation unit, which can convert the flow of hydraulic oil into electrical energy. The first hydraulic component is connected to the sliding spoiler and can extend and retract under the reciprocating sliding of the sliding spoiler. The second hydraulic component is connected to the float assembly and can extend and retract under the swinging of the float assembly. The hydraulic oil ports at both ends of each of the first and second hydraulic components are respectively connected to the hydraulic power generation unit.

[0007] In the ocean current energy generation system of this invention, when the ocean current passes through the sliding spoiler, the seawater will fluctuate due to the flow effect, thereby driving the float assembly connected to the sliding spoiler to swing up and down. Simultaneously, the flow-induced vibration effect generated when the ocean current passes through the sliding spoiler will cause it to reciprocate up and down. Collaboratively, the movement of the sliding spoiler further increases the amplitude of the ocean current fluctuations. The fluctuating ocean current will scour the energy-absorbing float, thereby increasing the amplitude of the float's swing. This improves the energy-absorbing float's ability to capture ocean current energy, increasing the energy conversion efficiency and power density of the ocean current.

[0008] Furthermore, the first hydraulic component can collect and convert the energy generated by the reciprocating sliding of the sliding spoiler, and the second hydraulic component can collect and convert the energy generated by the oscillation of the float assembly. This further enhances the ability to capture ocean current energy and increases the energy conversion efficiency of ocean current energy.

[0009] At the same time, the improved power generation efficiency solves the limitations of traditional power supply methods and enhances the flexibility and endurance of underwater electromechanical devices, which is conducive to further expanding the application scenarios of underwater electromechanical devices.

[0010] Therefore, the ocean current energy power generation system of the present invention has the advantages of improving power generation efficiency and power density.

[0011] In some embodiments, the energy-absorbing float has a first side and a second side disposed opposite to each other along the thickness direction of the energy-absorbing float, and the first side and / or the second side is disposed in a wavy line shape.

[0012] In some embodiments, two adjacent energy-absorbing floats are hinged together, one end of the second hydraulic component is connected to one of the energy-absorbing floats, and the other end of the second hydraulic component is connected to the other adjacent energy-absorbing float.

[0013] In some embodiments, a plurality of second hydraulic components are provided between two adjacent energy-absorbing floats, and the plurality of second hydraulic components are connected between the two adjacent energy-absorbing floats at intervals along the width and / or thickness direction of the energy-absorbing float.

[0014] In some embodiments, the ocean current power generation system further includes a tailplate having a first end and a second end disposed opposite to each other along the first direction, the first end being connected to the outermost energy-absorbing float, and the thickness of the tailplate increasing from the first end to the second end to form a first curved surface and a second curved surface on both sides of the thickness direction of the tailplate.

[0015] In some embodiments, the thickness of the second end of the tail plate is greater than the maximum thickness of the energy-absorbing float.

[0016] In some embodiments, the column frame includes a base and a plurality of spaced-apart limiting columns erected on the base. The sliding disturbance component includes an energy-harvesting column group and a resonant elastic component. The energy-harvesting column group is sleeved on the limiting columns and slides back and forth relative to each other along the extension direction of the limiting columns. One end of each of the resonant elastic component and the first hydraulic component is connected to the limiting column, and the other end of each of the resonant elastic component and the first hydraulic component is connected to the base plate of the limiting column.

[0017] In some embodiments, the energy-harvesting column group includes a connecting rod and a plurality of turbulence-disrupting columns extending along a second direction. The plurality of turbulence-disrupting columns are connected by the connecting rod to form a column group structure. At least one of the turbulence-disrupting columns has its two ends respectively sleeved on the limiting column, and the energy-harvesting column group reciprocates relative to the extending direction of the limiting column. One end of each of the resonant elastic element and the first hydraulic element is connected to the turbulence-disrupting column, and the second direction is perpendicular to the first direction.

[0018] In some embodiments, the limiting post includes a column rod and a first limit anti-detachment part and a second limit anti-detachment part disposed on the column rod, wherein the first limit anti-detachment part and the second limit anti-detachment part are disposed on the column rod at a distance.

[0019] In some embodiments, the plurality of the turbulence columns are divided into a first turbulence column and a second turbulence column, the first turbulence column and the second turbulence column are spaced apart along a third direction, the second turbulence column is disposed close to the base, the first turbulence column is hinged to the floating plate assembly, one end of the resonant elastic element is connected to the second turbulence column, and the third direction is orthogonal to the first direction and the second direction.

[0020] In some embodiments, the baffle column is cylindrical, and the diameter of the cylindrical baffle column satisfies the following condition: Where ρ represents the fluid density; U represents the fluid velocity; L is the cylinder diameter; μ is the fluid's dynamic viscosity coefficient; and v is the fluid's kinematic viscosity coefficient. The relationship between the two is... 3.2×10 3 <Re<4.5×10 3 .

[0021] In some embodiments, the energy conversion device further includes a triboelectric nanogenerator unit, which includes an electrically connected friction plate and a dielectric film. The friction plate is electrically connected to the power management system, and the dielectric film is attached to the column frame.

[0022] In some embodiments, the energy conversion device further includes a linear electromagnetic power generation unit, wherein the motor actuator in the linear electromagnetic power generation unit can generate electricity by cutting magnetic field lines as the sliding disturbance component slides, and the linear electromagnetic power generation unit is electrically connected to the power management system. Attached Figure Description

[0023] Figure 1 This is a front view of the ocean current energy power generation system according to an embodiment of the present invention.

[0024] Figure 2 This is a perspective view of an ocean current energy power generation system according to an embodiment of the present invention.

[0025] Figure 3 This is another perspective view of the ocean current energy power generation system according to an embodiment of the present invention.

[0026] Figure 4 yes Figure 3 Enlarged view at point A.

[0027] Figure 5 This is a front view of the energy-absorbing float according to an embodiment of the present invention.

[0028] Figure 6 This is a perspective view of the energy-absorbing float plate according to an embodiment of the present invention.

[0029] Figure 7 This is a front view of the tail plate according to an embodiment of the present invention.

[0030] Figure 8 This is a perspective view of the tail plate according to an embodiment of the present invention.

[0031] Figure 9 This is a front view of the column group support frame according to an embodiment of the present invention.

[0032] Figure 10 This is a perspective view of the column support frame according to an embodiment of the present invention.

[0033] Figure label:

[0034] Column group support frame 1;

[0035] Column frame 11; base 111; limiting column 112; column rod 1121; first limit anti-detachment part 1122; second limit anti-detachment part 1123;

[0036] Sliding spoiler 12; Energy-harvesting column group 121; Connecting rod 1211;

[0037] 1212 spoiler column; 122 resonant elastic element;

[0038] Float assembly 2; Energy-absorbing float 21; First side 211; Second side 212; Tail plate 22; First end 221; Second end 222;

[0039] Hydraulic power generation unit 31; first hydraulic component 32; second hydraulic component 33; triboelectric nano-power generation unit (not shown); linear electromagnetic power generation unit (not shown). Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] The following is for reference. Figures 1-10 This invention describes an ocean current energy generation system according to an embodiment of the present invention.

[0042] The ocean current energy power generation system of this invention includes a column support frame 1, a floating plate assembly 2, and an energy conversion device.

[0043] The column support frame 1 includes a column frame 11 and a sliding spoiler 12. The column frame 11 is for installation on the seabed, and the sliding spoiler 12 is installed on the column frame 11 and the sliding spoiler 12 is positioned along the extension direction of the column frame 11 (e.g., Figure 1 The float assembly 2 is capable of reciprocating sliding in the vertical direction shown in the figure; one end of the float assembly 2 is hinged to the sliding spoiler 12 and can swing relative to the column frame 11 in the vertical direction. The float assembly 2 includes multiple components along the first direction (e.g., Figure 1 The energy-absorbing floats 21 are connected in sequence (front and back directions as shown in the figure); the energy conversion device includes a power management system (not shown), a hydraulic power generation unit 31, a first hydraulic component 32 and a second hydraulic component 33. The power management system is electrically connected to the hydraulic power generation unit 31, which can convert the flow of hydraulic oil into electrical energy. The first hydraulic component 32 is connected to the sliding turbulence member 12 and can extend and retract under the reciprocating sliding of the sliding turbulence member 12. The second hydraulic component 33 is connected to the float assembly 2 and can extend and retract under the swing of the float assembly 2. The hydraulic oil ports at both ends of each of the first hydraulic component 32 and the second hydraulic component 33 are respectively connected to the hydraulic power generation unit 31.

[0044] The ocean current energy generation system of this embodiment can first turbulent the ocean current through the sliding disturbance component 12. The seawater will then vibrate due to the vibration effect of the sliding disturbance component 12, thereby driving the float assembly 2 connected to the sliding disturbance component 12 to swing up and down. Simultaneously, the sliding disturbance component 12 will increase the amplitude of the ocean current's fluctuations. Collaboratively, the sliding disturbance component 12 will correspondingly increase its own sliding amplitude, further increasing the amplitude of the ocean current fluctuations. The fluctuating ocean current will scour the energy-absorbing float 21, further increasing the amplitude of the float 21's swing. Therefore, this ocean current energy generation system improves the energy-absorbing float 21's ability to capture ocean current energy and increases the energy conversion efficiency and power generation density of the ocean current energy.

[0045] Furthermore, the first hydraulic component 32 can collect and convert the energy generated by the reciprocating sliding of the sliding spoiler 12, and the second hydraulic component 33 can collect and convert the energy generated by the oscillation of the float assembly 2. This further enhances the ability to capture ocean current energy and increases the energy conversion efficiency of ocean current energy.

[0046] At the same time, the improved power generation efficiency solves the limitations of traditional power supply methods and enhances the flexibility and endurance of underwater electromechanical devices, which is conducive to expanding the application scenarios of underwater electromechanical devices (for example, for operations requiring covert operation).

[0047] Therefore, the ocean current energy power generation system of the present invention has the advantages of improving power generation efficiency and power density.

[0048] Specifically, Figure 1 The direction from front to back in the middle indicates the direction of ocean current flow.

[0049] The working principle of the hydraulic power generation unit 31 is further described. Both the first hydraulic component 32 and the second hydraulic component 33 include hydraulic cylinders, which can be divided into a first chamber and a second chamber. When the oil in the first chamber of the hydraulic cylinder is compressed, the volume of the first chamber decreases, and the oil is forced out of the hydraulic cylinder. The oil flows out through the pipeline. After the accumulator's action, the pressure and flow rate in the pipeline stabilize. Correspondingly, the hydraulic motor converts hydraulic energy into mechanical energy to drive the generator to generate electricity. Excess oil flows back to the oil tank. Due to the increased volume and decreased pressure in the second chamber, the oil flows back to the second chamber of the hydraulic cylinder. When the oil on the right side of the hydraulic cylinder is compressed, the volume of the second chamber decreases, causing oil to be drawn into the first chamber and forced out of the second chamber. Finally, the hydraulic motor outputs mechanical energy to drive the generator to generate electricity. Due to the suction effect of the first chamber of the hydraulic cylinder, the oil flows back to the first chamber. Thus, regardless of whether the hydraulic rod moves towards the first chamber or the second chamber, the hydraulic motor rotates in the forward direction, enabling the system to generate electricity stably.

[0050] like Figures 1 to 6As shown, the energy-absorbing float 21 has a first side 211 and a second side 212 disposed opposite to each other along the thickness direction of the energy-absorbing float 21, and the first side 211 and / or the second side 212 are arranged in a wavy line shape. In other words, the first side 211 of the energy-absorbing float 21 is arranged in a wavy line shape; or the second side 212 of the energy-absorbing float 21 is arranged in a wavy line shape; or both the first side 211 and the second side 212 of the energy-absorbing float 21 are arranged in a wavy line shape.

[0051] The ocean current energy generation system of this invention, by arranging the first side 211 and the second side 212 of the energy-absorbing float 21 in a wave-like pattern, allows the energy-absorbing float 21 to have a larger contact area with the ocean current, thereby improving the energy capture capability of the energy-absorbing float 21. Thus, this ocean current energy generation system further enhances the energy conversion efficiency of ocean current energy.

[0052] like Figures 1 to 3 As shown, two adjacent energy-absorbing floats 21 are hinged together, one end of the second hydraulic component 33 is connected to one of the energy-absorbing floats 21, and the other end of the second hydraulic component 33 is connected to the other adjacent energy-absorbing float 21.

[0053] The ocean current energy generation system of this invention, by hingedly connecting two adjacent energy-absorbing floats 21, allows for a significant range of movement between the adjacent floats 21 under the influence of ocean currents, thereby increasing the extension and retraction range of the connected second hydraulic component 33. This further improves the power generation efficiency of the ocean current energy generation system.

[0054] Furthermore, by connecting one end of the second hydraulic component 33 to one of the energy-absorbing floats 21 and the other end of the second hydraulic component 33 to another adjacent energy-absorbing float 21, the range of extension and retraction of the second hydraulic component 33 is further increased compared to when it is located in other parts. Thus, the power generation efficiency of this ocean current energy generation system is further improved.

[0055] like Figures 1 to 4 As shown, multiple second hydraulic components 33 are provided between two adjacent energy-absorbing floats 21. The multiple second hydraulic components 33 are connected between the two adjacent energy-absorbing floats 21 at intervals along the width and / or thickness direction of the energy-absorbing float 21.

[0056] The ocean current energy generation system of this invention, by setting up multiple second hydraulic components 33, and the superposition of the actions of the multiple second hydraulic components 33, can accelerate the flow of hydraulic oil, thereby enhancing the energy collection and conversion generated by the swing of the energy-absorbing float 21. Thus, the ocean current energy generation system further improves the power generation efficiency.

[0057] Specifically, for example, Figure 1 and 2As shown, corresponding second hydraulic components 33 are also provided on both sides of the thickness direction of two adjacent energy-absorbing floats 21, and multiple second hydraulic components 33 are provided on the width direction of two adjacent energy-absorbing floats 21.

[0058] like Figures 1 to 3 , Figure 7 and Figure 8 As shown, the ocean current energy generation system of this embodiment further includes a tail plate 22, which has a first end 221 and a second end 222 disposed opposite to each other along a first direction. The first end 221 is adjacent to the outermost energy-absorbing float 21 (e.g., Figure 2 The energy-absorbing float 21 at the right end shown is connected, and the thickness of the tail plate 22 extends from the first end 221 to the second end 222 (e.g., Figure 2 (The direction shown is from front to back) increases.

[0059] The ocean current energy power generation system of this invention, by setting a tail plate 22 and increasing the thickness of the tail plate 22 from the first end 221 to the second end 222, forms a first curved surface and a second curved surface on both sides of the thickness direction of the tail plate 22. This increases the resistance of water flow through the tail plate 22. Because of the thickened design, the disturbance of the passing ocean current increases, thereby increasing the swing amplitude of the float, which in turn drives the first hydraulic component 32 to continuously extend and retract, promoting faster hydraulic oil flow. In addition, the increased swing of the float further increases the sliding amplitude of the sliding disturbance component 12, increasing the power generation efficiency of the second hydraulic component 33, thereby achieving multiple synergistic effects and greatly improving the power generation efficiency of the ocean current energy power generation system.

[0060] Optionally, a first curved surface and a second curved surface are formed on both sides of the tailplate 22 in the thickness direction. This allows the ocean current to move smoothly from the first end 221 to the second end 222, and further agitates the current at the ends of the first and second curved surfaces. This further improves the power generation efficiency of the ocean current energy generation system.

[0061] The thickness of the second end 222 of the tail plate 22 is greater than the maximum thickness of the energy-absorbing float 21. As a result, the tail plate 22 increases the disturbance to ocean currents, thereby further improving the power generation efficiency of the ocean current energy power generation system.

[0062] Furthermore, the thickness of the second end 222 of the tail plate 22 is 1.5 to 3 times the maximum thickness of the energy-absorbing float 21. This avoids the problem of insufficient maximum thickness of the energy-absorbing float 21, resulting in weak current-disturbing ability, while also preventing excessive thickness of the tail plate 22, which would increase the pulling force towards the tail plate 22 and consequently increase the horizontal force exerted by the float assembly 2 on the column frame 1, leading to poor structural stability. Therefore, it possesses the advantages of both good structural stability and high power generation efficiency.

[0063] Furthermore, adjacent energy-absorbing floats 21 can be connected by hinges. Under the impact of ocean currents, the distance between adjacent energy-absorbing floats 21 can be adjusted, thereby further enhancing the extension and retraction of the second hydraulic component 33. Consequently, the power generation efficiency of this ocean current energy generation system is further improved.

[0064] like Figures 1 to 3 ,and Figure 9 and Figure 10 As shown, the column frame 11 includes a base 111 and a plurality of spaced-apart limiting columns 112 erected on the base 111. The sliding turbulence component 12 includes an energy-harvesting column group 121 and a resonant elastic component 122. The energy-harvesting column group 121 is sleeved on the limiting column 112 and slides back and forth relative to the extension direction of the limiting column 112. One end of each of the resonant elastic component 122 and the first hydraulic component 32 is connected to the limiting column 112, and the other end of each of the resonant elastic component 122 and the first hydraulic component 32 is connected to the base plate of the limiting column 112.

[0065] The ocean current energy generation system of this invention divides the sliding disturbance component 12 into an energy-harvesting column group 121 and a resonant elastic component 122 (e.g., a spring). When the ocean current passes through the column group at a low velocity (applicable to a wide range of velocities), the energy-harvesting column group 121 will vibrate due to the flow-induced vibration effect. The up-and-down movement of the energy-harvesting column group 121 can drive the vibration of the resonant elastic component 122, which will generate regular resonance after being driven. This, in turn, reacts on the energy-harvesting column group 121, increasing the vibration amplitude and duration of the energy-harvesting column group 121, thereby increasing the energy conversion efficiency of the ocean current energy.

[0066] Specifically, the resonant elastic element 122 along Figure 2 Extending in the vertical direction, the upper end of the resonant elastic element 122 is connected to the energy-harvesting column group 121, and the lower end of the resonant elastic element 122 is connected to the base 111.

[0067] like Figures 1 to 3 ,and Figure 9 and Figure 10 As shown, the energy-harvesting column group 121 includes connecting rods 1211 and multiple components extending along a second direction (e.g., Figure 2 The diagram shows a turbulence-trapping column 1212 (in the left-right direction). Multiple turbulence-trapping columns 1212 are connected by connecting rods 1211 to form a column group structure. At least one turbulence-trapping column 1212 has both ends respectively fitted onto a limiting column 112, and the energy-harvesting column group 121 reciprocates relative to the extending direction of the limiting column 112. One end of each of the resonant elastic element 122 and the first hydraulic element 32 (e.g., ...) Figure 2 The upper end shown is connected to the spoiler column 1212, and the second direction is set perpendicular to the first direction.

[0068] The ocean current energy generation system of this embodiment divides the energy-harvesting column group 121 into connecting rods 1211 and multiple turbulence-disrupting columns 1212. The multiple turbulence-disrupting columns 1212 can improve the efficiency of ocean current circulation, which is beneficial to enhancing the vibration effect of the energy-harvesting column group 121. Therefore, this ocean current energy generation system further improves the energy-harvesting float 21's ability to capture ocean current energy and its energy conversion efficiency.

[0069] like Figures 1 to 3 ,and Figure 9 and Figure 10 As shown, the multiple spoiler columns 1212 are divided into a first spoiler column and a second spoiler column, and the first spoiler column and the second spoiler column are spaced apart along a third direction (e.g., Figure 2 The first turbulence column is set apart from the second turbulence column in the vertical direction shown in the figure. The second turbulence column is set close to the base 111. The first turbulence column is hinged to the float assembly 2. One end of the resonant elastic element 122 is connected to the second turbulence column. The third turbulence column is set orthogonally to the first and second directions.

[0070] The ocean current energy generation system of this embodiment divides multiple turbulence columns 1212 into a first turbulence column and a second turbulence column, with the first turbulence column and the second turbulence column positioned along a third direction (e.g., Figure 2 The arrangement of the floats (shown in the vertical direction) increases the area affected by ocean current disturbance, thereby enhancing the ocean current vibration effect. Thus, this ocean current energy generation system further improves the energy-capturing capacity of the energy-absorbing floats 21 and the energy conversion efficiency of ocean current energy.

[0071] Optionally, there can be four limiting posts 112, which are arranged in a rectangular pattern. There can also be four or five turbulence-disrupting posts 1212, which are arranged in parallel.

[0072] like Figures 1 to 3 ,and Figure 9 and Figure 10 As shown, the limiting post 112 includes a column rod 1121 and a first limit anti-detachment part 1122 and a second limit anti-detachment part 1123 disposed on the column rod 1121. The first limit anti-detachment part 1122 and the second limit anti-detachment part 1123 are disposed on the column rod 1121 at a distance.

[0073] The ocean current energy generation system of this invention, by dividing the limiting column 112 into a column rod 1121 and a first limit anti-detachment part 1122 and a second limit anti-detachment part 1123 disposed on the column rod 1121, can ensure that the sliding disturbance member 12 has a relatively suitable swing range. Within this range, the energy-absorbing float 21 swings with the scouring motion of the ocean current; beyond this range, the energy-absorbing float 21's ability to capture ocean current energy decreases, resulting in a reduction in energy conversion efficiency. The first limit anti-detachment part 1122 and the second limit anti-detachment part 1123 can limit the swing of the energy-absorbing float 21, ensuring that its swing amplitude is always within the optimal operating range. Therefore, this ocean current energy generation system improves the energy-absorbing float 21's ability to capture ocean current energy and increases the energy conversion efficiency of ocean current energy.

[0074] Meanwhile, the support column 1121, the first limit anti-detachment part 1122, and the second limit anti-detachment part 1123 restrict the direction and range of movement of the energy-harvesting column group 121, making its movement more regular and helping to improve the efficiency of energy conversion. The up-and-down movement of the energy-harvesting column group 121 drives the oscillation of the subsequent float assembly 2. Simultaneously, the energy-harvesting column group 121 also generates wake vortices due to the flow effect, causing them to detach and further propelling the oscillation of the float assembly 2. This also increases the disturbance effect on the water flow. Therefore, this ocean current energy generation system further improves the energy-harvesting float 21's ability to capture ocean current energy and its energy conversion efficiency.

[0075] In addition, the energy-absorbing float 21 swings up and down with the scouring motion of the waves. When the energy-absorbing float 21 swings upward, it abuts against the first limit anti-detachment part 1122. When the energy-absorbing float 21 swings downward under its own weight after the waves have left, it abuts against the second limit anti-detachment part 1123. This prevents the energy-absorbing float 21 from directly colliding with the base 111, reducing damage to the corresponding components and thus improving the service life of the ocean current energy generation system.

[0076] like Figure 2 and Figure 10 As shown, the turbulence column 1212 is cylindrical, and the diameter of the cylindrical turbulence column 1212 satisfies the following condition: Where ρ represents the fluid density; U represents the fluid velocity; L is the cylinder diameter; μ is the fluid's dynamic viscosity coefficient; and v is the fluid's (ocean current's) kinematic viscosity coefficient. The relationship between the two is... 3.2×10 3 <Re<4.5×10 3 Or Re > 7.5 × 10 3 .

[0077] In the ocean current energy power generation system of this invention, after the ocean current flows around the cylindrical turbulence column 1212, a significant tail vortex shedding effect is generated, which can drive the float assembly 2 to swing, thereby causing the second hydraulic component 33 to extend and retract, promoting the flow of hydraulic oil to drive the hydraulic motor to rotate, and in turn driving the generator to generate electricity. After the ocean current passes through the turbulence column 1212, it will generate a superimposed effect of flow around and flow-induced vibration, increasing the vertical movement amplitude of the turbulence column 1212. In this way, the float assembly 2 can be driven to move more strongly, increasing the power generation and efficiency of the hydraulic power generation system.

[0078] Furthermore, the energy conversion device also includes a triboelectric nanogenerator unit (not shown), which includes an electrically connected friction plate and a dielectric film. The friction plate is electrically connected to the power management system, and the dielectric film is attached to the column frame 11.

[0079] The ocean current energy power generation system of this invention further improves the power generation efficiency by setting a triboelectric nano-power generation unit and attaching a dielectric film to the column frame 11. While the sliding disturbance 12 can slide back and forth in the extension direction of the column frame 11, it also generates friction with the column frame 11 and collects the energy of this part to generate electricity.

[0080] The energy conversion device also includes a linear electromagnetic power generation unit (not shown), in which the motor actuator can cut magnetic field lines to generate electricity as the sliding disturbance member 12 slides. In this embodiment of the ocean current energy generation system, the further provided linear electromagnetic power generation unit cuts magnetic field lines to generate electricity while the sliding disturbance member 12 reciprocates along the extension direction of the column frame 11. Therefore, this ocean current energy generation system further improves the efficiency of power generation.

[0081] Furthermore, while the sliding spoiler 12 is sliding, energy can be simultaneously converted into electrical energy using three forms: the first hydraulic component 32, the triboelectric nano-power generation unit, and the linear electromagnetic power generation unit. Thus, this ocean current energy generation system further improves its power generation efficiency.

[0082] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "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 invention and simplifying the description, and are not intended to 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 invention.

[0083] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] 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.

[0086] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0087] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An ocean current energy generation system, characterized in that, include: A column group support frame, comprising a column frame and a sliding spoiler, wherein the column frame is for installation on the seabed, and the sliding spoiler is disposed on the column frame and is capable of reciprocating sliding in the extending direction of the column frame; A float assembly, one end of which is hinged to the sliding spoiler and can swing in the vertical direction relative to the column frame; the float assembly includes a plurality of energy-absorbing floats connected in sequence along a first direction. An energy conversion device includes a power management system, a hydraulic power generation unit, a first hydraulic component, and a second hydraulic component. The power management system is electrically connected to the hydraulic power generation unit, which can convert the flow of hydraulic oil into electrical energy. The first hydraulic component is connected to the sliding turbulence member and can extend and retract under the reciprocating sliding of the sliding turbulence member. The second hydraulic component is connected to the float assembly and can extend and retract under the swinging of the float assembly. The hydraulic oil ports at both ends of each of the first and second hydraulic components are respectively connected to the hydraulic power generation unit. The tailplate has a first end and a second end disposed opposite to each other along the first direction. The first end is connected to the outermost energy-absorbing float. The thickness of the tailplate increases from the first end to the second end to form a concave first curved surface and a second curved surface on both sides of the thickness direction of the tailplate, which increases the resistance of water flow through the tailplate and increases the disturbance of the ocean current, thereby increasing the amplitude of the float's swing. The thickness of the second end of the tailplate is greater than the maximum thickness of the energy-absorbing float. The column frame includes a base and a plurality of spaced-apart limiting columns erected on the base. The sliding turbulence component includes an energy-harvesting column group and a resonant elastic component. The energy-harvesting column group is sleeved on the limiting columns and slides back and forth relative to each other along the extension direction of the limiting columns. One end of each of the resonant elastic component and the first hydraulic component is connected to the energy-harvesting column group, and the other end of each of the resonant elastic component and the first hydraulic component is connected to the bottom plate of the limiting column. The energy-harvesting column group includes a connecting rod and a plurality of turbulence-disrupting columns extending along a second direction. The plurality of turbulence-disrupting columns are connected by the connecting rod to form a column group structure. At least one of the turbulence-disrupting columns has its two ends respectively sleeved on the limiting column, and the energy-harvesting column group slides back and forth relative to each other along the extension direction of the limiting column. One end of each of the resonant elastic element and the first hydraulic element is connected to the energy-harvesting column group. The second direction is perpendicular to the first direction. The limiting column includes a column rod and a first limit anti-detachment part and a second limit anti-detachment part disposed on the column rod. The first limit anti-detachment part and the second limit anti-detachment part are disposed on the column rod at intervals.

2. The ocean current energy generation system according to claim 1, characterized in that, The energy-absorbing float has a first side and a second side arranged opposite to each other along the thickness direction of the energy-absorbing float, and the first side and / or the second side is arranged in a wavy line shape. And / or, two adjacent energy-absorbing floats are hinged together, one end of the second hydraulic component is connected to one of the energy-absorbing floats, and the other end of the second hydraulic component is connected to the other adjacent energy-absorbing float.

3. The ocean current energy generation system according to claim 2, characterized in that, A plurality of second hydraulic components are provided between each two adjacent energy-absorbing floats, and the plurality of second hydraulic components are connected between the two adjacent energy-absorbing floats at intervals along the width and / or thickness direction of the energy-absorbing floats.

4. The ocean current energy generation system according to claim 1, characterized in that, The plurality of the aforementioned turbulence columns are divided into a first turbulence column and a second turbulence column. The first turbulence column and the second turbulence column are arranged at intervals along a third direction. The second turbulence column is arranged close to the base. The first turbulence column is hinged to the floating plate assembly. One end of the resonant elastic element is connected to the second turbulence column. The third direction is orthogonal to the first direction and the second direction.

5. The ocean current energy generation system according to claim 1, characterized in that, The turbulence-inducing column is cylindrical, and the diameter of the cylindrical turbulence-inducing column satisfies the following condition: Where ρ represents the fluid density; U represents the fluid velocity; L is the cylinder diameter; μ is the fluid's dynamic viscosity coefficient; and v is the fluid's kinematic viscosity coefficient, with the relationship between the two being... 3.2×10 3 <Re<4.5×10 3 .

6. The ocean current energy generation system according to any one of claims 1-5, characterized in that, The energy conversion device further includes a triboelectric nanogenerator unit, which includes an electrically connected friction plate and a dielectric film. The friction plate is electrically connected to the power management system, and the dielectric film is attached to the column frame. And / or, the energy conversion device further includes a linear electromagnetic power generation unit, wherein the motor actuator in the linear electromagnetic power generation unit is capable of generating electricity by cutting magnetic field lines as the sliding disturbance component slides, and the linear electromagnetic power generation unit is electrically connected to the power management system.

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