A wave energy capture device capable of realizing cascade energy capture

Abstract

The present application discloses a wave energy capture device capable of realizing cascade energy capture, comprising: a primary energy capture component, a secondary energy capture component and a tertiary energy capture component; the primary energy capture component comprises: an external wave-absorbing float, an internal wave-absorbing float and a primary energy storage telescopic rod; the secondary energy capture component comprises: a support seat, a slide plate and a secondary energy storage telescopic rod; the tertiary energy capture component comprises: a three-stage energy storage telescopic rod; a fixing plate is provided on the support seat at the rear end of the slide plate; the internal wave-absorbing float can capture tiny wave energy without being affected by changes in wave direction, thereby realizing full-wave wave energy capture; the external wave-absorbing float can follow the waves when the waves are large, thereby improving energy capture efficiency; the three-stage energy storage telescopic rod can extend and retract when the waves are larger, causing the external wave-absorbing float to push the slide plate to move, thereby realizing cascade wave energy capture from small waves to large waves, thereby improving the stability of wave energy capture and solving the problem of unstable power generation in existing wave energy power generation devices.

Description

Technical Field

[0001] The present application relates to the technical field of wave energy power generation, and in particular to a wave energy capture device capable of achieving cascaded energy capture. Background Art

[0002] Among the many renewable energy sources, wave energy is a clean and abundant marine renewable energy source with the advantages of high energy flow density, wide distribution, sustainable utilization, and no time and space limitations.

[0003] Wave energy devices typically operate within a specific wave height range. Due to the fluctuating, intermittent, and random nature of waves, when the waves are small, the wave forces are too weak to drive the absorbing floats to generate power, resulting in no power generation. When the waves are large, power generation must cease to ensure the device's safety. This limitation makes existing wave energy devices difficult to adapt to varying wave conditions and generate stable power, hindering their widespread application. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a wave energy capture device that can achieve cascaded energy capture, so as to solve the problem of unstable power generation in existing wave energy power generation devices.

[0005] In order to achieve the above technical objectives, the present application provides a wave energy capture device capable of realizing cascaded energy capture, comprising: a primary energy capture component, a secondary energy capture component, and a tertiary energy capture component;

[0006] The first-level energy harvesting assembly includes: an external wave-absorbing float, an internal wave-absorbing float and a first-level energy storage telescopic rod;

[0007] The bottom surface of the external wave absorbing float is provided with an open groove;

[0008] The internal wave absorbing float is slidably disposed in the open groove, and the outer periphery is sealed and connected to the groove wall of the open groove;

[0009] The first-level energy storage telescopic rod is arranged in the open slot, and the output end is connected to the internal wave absorbing float;

[0010] The secondary energy harvesting component includes: a support seat, a slide plate and a secondary energy storage telescopic rod;

[0011] The external wave-absorbing float is rotatably arranged at the front end of the support seat in a vertical direction;

[0012] The slide plate can be slidably arranged on the support seat;

[0013] The secondary energy storage telescopic rod is rotatably arranged on the slide in a vertical direction, and the output end of the secondary energy storage telescopic rod is rotatably connected to the external wave absorbing float in a vertical direction;

[0014] The three-stage energy harvesting component includes: a three-stage energy storage telescopic rod;

[0015] A fixing plate is provided on the support seat at the rear end of the slide;

[0016] The three-stage energy storage telescopic rod is fixed on the fixed plate, and the output end is connected to the slide plate.

[0017] Furthermore, the internal wave absorbing floating body is a conical floating body.

[0018] Furthermore, the first-level energy acquisition component further includes: an upper limit ring and a lower limit ring;

[0019] The upper limit ring and the lower limit ring are arranged in the open groove at intervals in the upper and lower directions;

[0020] The internal wave absorbing float is arranged between the upper limit ring and the lower limit ring;

[0021] The upper limit ring and the lower limit ring are used to limit the passage of the internal wave absorbing float.

[0022] Furthermore, the first-level energy storage telescopic rod is a hydraulic oil rod;

[0023] The first-level energy harvesting assembly further includes: an oil outlet pipe, an oil suction pipe, an output oil conduit and an input oil conduit;

[0024] The oil outlet pipe, oil suction pipe, output oil conduit and input oil conduit are all arranged in the open groove;

[0025] The interior of the first-level energy storage telescopic rod is connected to the output oil conduit through the oil outlet pipe, and is also connected to the output oil conduit through the oil suction pipe.

[0026] Furthermore, the first-level energy storage telescopic rod includes multiple ones.

[0027] Furthermore, the secondary energy storage telescopic rod and the tertiary energy storage telescopic rod are both hydraulic oil rods.

[0028] Furthermore, the external wave absorbing floating bodies include a plurality of floating bodies, which are evenly distributed around the support seat.

[0029] Furthermore, the external wave-absorbing floating body is an elliptical floating body with a curved bottom surface.

[0030] Furthermore, the external wave absorbing float is connected to the support base via a cross-turning base;

[0031] The secondary energy storage telescopic rod is connected to the slide plate via a cross steering base.

[0032] Furthermore, the rotation angle range of the cross-steering base in the vertical direction is within ±12°, and the rotation angle range in the horizontal direction is within ±4°.

[0033] It can be seen from the above technical solutions that the present application provides a wave energy capture device that can realize cascade energy capture, including: a first-stage energy capture component, a second-stage energy capture component and a third-stage energy capture component; the first-stage energy capture component includes: an external wave-absorbing float, an internal wave-absorbing float and a first-stage energy storage telescopic rod; the bottom surface of the external wave-absorbing float is provided with an open groove; the internal wave-absorbing float can be slidably arranged in the open groove, and the outer periphery is sealed with the groove wall of the open groove; the first-stage energy storage telescopic rod is arranged in the open groove, and the output end is connected to the internal wave-absorbing float; the second-stage energy capture component includes :Support seat, slide plate and secondary energy storage telescopic rod; the external wave absorbing float is rotatably arranged at the front end of the support seat in the vertical direction; the slide plate is slidably arranged on the support seat in the forward and backward direction; the secondary energy storage telescopic rod is rotatably arranged on the slide plate in the vertical direction, and the output end of the secondary energy storage telescopic rod is rotatably connected to the external wave absorbing float in the vertical direction; the three-stage energy harvesting component includes: a three-stage energy storage telescopic rod; a fixed plate is provided on the support seat at the rear end of the slide plate; the three-stage energy storage telescopic rod is fixed on the fixed plate, and the output end is connected to the slide plate. The internal wave absorbing float can capture smaller wave energy and is not affected by changes in wave direction, so that full wave direction wave energy capture can be achieved; the external wave absorbing float can follow the wave fluctuations when the waves are large, thereby improving energy capture efficiency; the three-stage energy storage telescopic rod can be extended and retracted when the waves are larger, so that the external wave absorbing float pushes the slide plate to move, thereby achieving cascade capture of wave energy from small waves to large waves, thereby improving the stability of wave energy capture and solving the problem of unstable power generation in existing wave energy power generation devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1 A schematic diagram of the overall structure of a wave energy capture device capable of achieving cascaded energy capture provided by an embodiment of the present application, with the outer wave-absorbing float in a half-section state;

[0036] Figure 2 A schematic diagram showing the enlarged position of the inner wave-absorbing float of a wave energy capture device capable of achieving cascaded energy capture, provided in an embodiment of the present application.

[0037] Figure 3 A side view of the overall structure of a wave energy capture device capable of achieving cascaded energy capture provided in an embodiment of the present application;

[0038] Figure 4 An enlarged view of the connection between the slide and the first-stage energy storage telescopic rod of a wave energy capture device capable of achieving cascaded energy capture provided in an embodiment of the present application;

[0039] Figure 5 An enlarged view of the connection position between the support base and the external wave-absorbing float of a wave energy capture device that can achieve cascaded energy capture provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions of the embodiments of the present application in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection requested by this application.

[0041] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0042] In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, replaceable connections, or integral connections. They can also refer to mechanical connections or electrical connections. They can also refer to direct connections or indirect connections through an intermediate medium. They can also refer to internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0043] See also Figures 1 to 5 A wave energy capture device that can achieve cascaded energy capture provided in an embodiment of the present application includes: a first-level energy capture component, a second-level energy capture component and a third-level energy capture component.

[0044] The primary energy harvesting assembly includes an outer absorbing float 1, an inner absorbing float 2, and a primary energy storage telescopic rod 15. The outer absorbing float 1 has an open slot on its bottom surface. The inner absorbing float 2 is slidably mounted within the slot, with its outer periphery sealed to the slot wall. The primary energy storage telescopic rod 15 is mounted within the slot, with its output end 14 connected to the inner absorbing float 2.

[0045] Specifically, when the waves are small, that is, when wave energy resources are relatively scarce, the smaller internal wave-absorbing float 2 can rise and fall with the fluctuations of small waves, driving the first-level energy storage telescopic rod 15 to extend and retract, capturing the wave energy of small waves, and is not affected by changes in wave direction, thus realizing full wave direction wave energy capture.

[0046] The secondary energy harvesting component includes: a support seat 6, a slide plate 7 and a secondary energy storage telescopic rod 5; the external wave absorbing float 1 is rotatably arranged at the front end of the support seat 6 in the vertical direction; the slide plate 7 is slidable back and forth on the support seat 6; the secondary energy storage telescopic rod 5 is rotatably arranged on the slide plate 7 in the vertical direction, and the output end 4 of the secondary energy storage telescopic rod is rotatably connected to the external wave absorbing float 1 in the vertical direction.

[0047] Specifically, the external wave-absorbing float 1 can be connected to the support base 6 via an L-shaped rod; the output end 4 of the secondary energy-storage telescopic rod 5 is rotatably mounted on the L-shaped rod in the vertical direction. Furthermore, the external wave-absorbing float 1 can be configured as an elliptical float with a curved bottom surface to reduce vortex generation and improve energy capture efficiency. The rear end back wave surface is also curved to effectively reduce radiation generated by the interaction between the floating pendulum and waves.

[0048] When the waves are large, the inner wave-absorbing buoy 2 will follow the waves and move together with the outer wave-absorbing buoy 1, thereby capturing the medium and large wave energy. In addition, the outer wave-absorbing buoy 1 is not affected by the change of wave direction, and can achieve wave energy capture in all wave directions.

[0049] The three-stage energy harvesting component includes: a three-stage energy storage telescopic rod 9; a fixed plate 11 is provided on the support seat 6 at the rear end of the slide 7; the three-stage energy storage telescopic rod 9 is fixed on the fixed plate 11, and the output end 8 of the three-stage energy storage telescopic rod is connected to the slide.

[0050] When the waves grow further and exceed the limit of energy that can be captured by the previous secondary energy harvesting component, the external wave-absorbing float 1 and the secondary energy storage telescopic rod 5 will further push the slide plate 7 to slide back and forth, thereby causing the tertiary energy storage telescopic rod 9 to extend and retract, achieving the tiered capture of wave energy from small waves to large waves.

[0051] Among them, the first-level energy storage telescopic rod 15, the second-level energy storage telescopic rod 5 and the third-level energy storage telescopic rod 9 are respectively connected to an external energy storage and power generation device, so as to realize energy storage and power generation when the three are extended and retracted.

[0052] The support base 6 may be provided with a slideway. A protrusion is provided at the bottom of the slide 7. The protrusion slides into the slideway, providing guidance for the slide 7. A limit plate may be provided at the front end of the slide 7. The limit plate, together with the fixed plate 11, limits the sliding amplitude of the slide 7.

[0053] In a more specific embodiment, the internal wave absorbing float 2 is a conical float, which can better capture the wave energy of small waves.

[0054] Furthermore, the first-level energy harvesting component also includes: an upper limit ring 13 and a lower limit ring 12; the upper limit ring 13 and the lower limit ring 12 are arranged in the open groove with an upper and lower interval; the inner wave absorbing float 2 is arranged between the upper limit ring 13 and the lower limit ring 12; the upper limit ring 13 and the lower limit ring 12 are used to limit the passage of the inner wave absorbing float 2.

[0055] Specifically, the upper and lower limiting rings 13 and 12 limit the movement of the inner wave-absorbing float 2. Furthermore, when the waves are large and the inner wave-absorbing float 2 abuts the upper limiting ring 13, it can drive the outer wave-absorbing float 1 to move synchronously, achieving step-by-step wave energy capture and avoiding damage to the primary energy storage telescopic rod 15.

[0056] Furthermore, the first-level energy storage telescopic rod 15 is a hydraulic oil rod; the first-level energy acquisition component also includes: an oil outlet pipe 16, an oil suction pipe 17, an output oil conduit 18 and an input oil conduit 19; the oil outlet pipe 16, the oil suction pipe 17, the output oil conduit 18 and the input oil conduit 19 are all arranged in the open groove; the interior of the first-level energy storage telescopic rod 15 is connected to the output oil conduit 18 through the oil outlet pipe 16, and is connected to the output oil conduit 19 through the oil suction pipe 17.

[0057] Specifically, the secondary energy storage telescopic rod 5 and the tertiary energy storage telescopic rod 9 can both be hydraulic oil rods. The internal oil circuit of the hydraulic system composed of hydraulic oil rods has been used in the prior art, and involves specific engineering arrangements, which will not be elaborated on here. Here, we only take the primary energy storage telescopic rod 15 as an example to illustrate the energy change process of the oil circuit: when the internal wave absorbing float 2 moves upward, it will drive the oil cylinder of the primary energy storage telescopic rod 15 to retract. At this time, the rodless cavity inside the primary energy storage telescopic rod 15 is pressurized, and the external mechanical energy is converted into oil hydraulic energy, and the hydraulic oil is input into the accumulator through the oil outlet pipe 16 and the output oil conduit 18. This process is the hydraulic cylinder discharging oil outward. When the internal wave absorbing float 2 moves downward, its oil cylinder extends. Due to the action of the one-way valve in the rodless cavity, the high-pressure oil in the accumulator cannot return to the rodless cavity of the oil cylinder. At this time, the hydraulic cylinder generates negative pressure after stretching and sucks oil from the high-level oil tank.

[0058] In one embodiment, the primary energy storage telescopic rods 15 are multiple and distributed. This allows operators to select the number of rods 15 to adjust the connection stiffness between the internal wave absorbing buoy 2 and the primary energy storage telescopic rods 15 based on actual conditions, thereby adjusting the natural frequency of the internal wave absorbing buoy 2 to align the structural frequency with the wave frequency, thereby achieving efficient capture of wave energy.

[0059] In another embodiment, the external wave-absorbing floating body 1 may include multiple ones, and they are evenly distributed around the support base 6 to achieve all-round energy acquisition.

[0060] Furthermore, the external wave-absorbing floating body 1 is connected to the support base 6 via the cross-steering base 20 ; the secondary energy storage telescopic rod 5 is connected to the slide plate 7 via the cross-steering base 20 .

[0061] Specifically, through the cross-steering base 20, the external wave-absorbing floating body 1 and the secondary energy-storage telescopic rod 5 can not only rotate in the vertical direction, but also swing in the horizontal direction.

[0062] Specifically, when a wave approaches head-on (i.e., when the wave's direction is directly opposite the external wave-absorbing float 1), the wave exerts an upward force on the external wave-absorbing float 1, causing the external wave-absorbing float 1 to swing the secondary energy storage telescopic rod 5 up and down. When a wave approaches from the side (i.e., when the wave's direction is not directly opposite the wave-absorbing float 1), the wave's force on the external wave-absorbing float 1 and the force on the secondary energy storage telescopic rod 5 from the external wave-absorbing float 1 contain both transverse and longitudinal components, causing the secondary energy storage telescopic rod 5 to swing both up and down as well as left and right. To ensure the energy conversion efficiency and safety performance of the secondary energy storage telescopic rod 5, the hydraulic cylinder should primarily swing up and down, while also allowing for a small amount of left and right swing, improving overall stability and operational safety.

[0063] In this embodiment, the rotation angle range of the cross-steering base in the vertical direction is within ±12°, and the rotation angle range in the horizontal direction is within ±4°.

[0064] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the aforementioned examples or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A wave energy capture device capable of achieving cascaded energy capture, characterized in that: include: Primary energy acquisition component, secondary energy acquisition component and tertiary energy acquisition component; The first-level energy harvesting assembly includes: an external wave-absorbing float, an internal wave-absorbing float and a first-level energy storage telescopic rod; The bottom surface of the external wave absorbing float is provided with an open groove; The internal wave absorbing float is slidably disposed in the open groove, and the outer periphery is sealed and connected to the groove wall of the open groove; The first-level energy storage telescopic rod is arranged in the open slot, and the output end is connected to the internal wave absorbing float; The secondary energy harvesting component includes: a support seat, a slide plate and a secondary energy storage telescopic rod; The external wave-absorbing float is rotatably arranged at the front end of the support seat in a vertical direction; The slide plate can be slidably arranged on the support seat; The secondary energy storage telescopic rod is rotatably arranged on the slide in a vertical direction, and the output end of the secondary energy storage telescopic rod is rotatably connected to the external wave absorbing float in a vertical direction; The three-stage energy harvesting assembly includes: a three-stage energy storage telescopic rod; A fixing plate is provided on the support seat at the rear end of the slide; The three-stage energy storage telescopic rod is fixed on the fixed plate, and the output end is connected to the slide plate.

2. The wave energy capture device capable of achieving cascaded energy capture according to claim 1, characterized in that: The internal wave absorbing floating body is a conical floating body.

3. The wave energy capture device capable of achieving cascaded energy capture according to claim 2, characterized in that: The first-level energy acquisition component further includes: an upper limit ring and a lower limit ring; The upper limit ring and the lower limit ring are arranged in the open groove at intervals in the upper and lower directions; The internal wave absorbing float is arranged between the upper limit ring and the lower limit ring; The upper limit ring and the lower limit ring are used to limit the passage of the internal wave absorbing float.

4. The wave energy capture device capable of achieving cascaded energy capture according to claim 1, characterized in that: The first-level energy storage telescopic rod is a hydraulic oil rod; The first-level energy harvesting assembly further includes: an oil outlet pipe, an oil suction pipe, an output oil conduit and an input oil conduit; The oil outlet pipe, oil suction pipe, output oil conduit and input oil conduit are all arranged in the open groove; The interior of the first-level energy storage telescopic rod is connected to the output oil conduit through the oil outlet pipe, and is also connected to the output oil conduit through the oil suction pipe.

5. The wave energy capture device capable of achieving cascaded energy capture according to claim 4, characterized in that: The first-level energy storage telescopic rod includes multiple ones.

6. The wave energy capture device capable of achieving cascaded energy capture according to claim 1, characterized in that: The secondary energy storage telescopic rod and the tertiary energy storage telescopic rod are both hydraulic oil rods.

7. The wave energy capture device capable of achieving cascaded energy capture according to claim 1, characterized in that: The external wave absorbing floating bodies include a plurality of floating bodies, which are evenly distributed around the supporting seat.

8. The wave energy capture device capable of achieving cascaded energy capture according to claim 1, characterized in that: The external wave-absorbing floating body is an elliptical floating body with a curved bottom surface.

9. The wave energy capture device capable of achieving cascaded energy capture according to claim 1, characterized in that: The external wave absorbing float is connected to the support base via a cross-turning base; The secondary energy storage telescopic rod is connected to the slide plate via a cross steering base.

10. The wave energy capture device capable of achieving cascaded energy capture according to claim 9, characterized in that: The rotation angle range of the cross-turn base in the vertical direction is within ±12°, and the rotation angle range in the horizontal direction is within ±4°.

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