Wave energy power generation device

Abstract

The invention discloses a wave energy power generation device which comprises a mounting part, a swing arm, a power generator and a power generation rolling part. The swinging arm is provided with a rotating part rotationally mounted on the mounting part, the two ends of the rotating part are a balance weight end and a power generation end respectively, and the distance between the power generation end and the rotating center of the rotating part is larger than that between the balance weight end and the rotating center of the rotating part; the generator is mounted on the rotating part; the power generation rolling part is rotationally mounted at the power generation end, is pressed against the mounting part in a rolling manner, can rotate around the axis of the power generation rolling part when rotating along with the power generation end, is in transmission connection with a rotor of the power generator, and can drive the rotor to rotate when rotating around the axis of the power generation rolling part. According to the scheme, the lever amplification principle is utilized, the use limitation and the defect that the device is prone to stagnation in small-amplitude waves are overcome, the energy obtaining range is expanded, and the energy obtaining advantage is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wave energy power generation, and particularly relates to a wave energy power generation device. Background Art

[0002] Wave energy is a type of ocean energy. Wave energy has a huge reserve, is easily accessible, clean and pollution-free. In recent years, wave energy has gradually become the focus of the development and utilization of renewable energy.

[0003] Publication No. CN209781122U discloses a wave energy power generation device. When the floating block contacts the flowing sea waves, the flowing sea waves can drive the first fan blade to move, thereby driving the first generator to operate for power generation. At the same time, the second fan blade underwater is effectively driven to rotate by the under-sea surge of the sea surface, and power generation is carried out again.

[0004] In this patent, the fan blade and the rotor of the generator are coaxially arranged. The wave is used to drive the fan blade to rotate, and then the rotor is synchronously driven to rotate to realize the power generation of the generator. However, due to the coaxial arrangement of the fan blade and the rotor, a wave with a large amplitude is required to drive the fan blade to rotate. When the device is in an environment of small-amplitude waves, the rotation stroke of the fan blade is small, and it is even prone to stagnation, and the energy acquisition range needs to be improved. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies, and propose a wave energy power generation device to solve the technical problem that when the device is in an environment of small-amplitude waves in the prior art, the rotation stroke of the fan blade is small, and it is even prone to stagnation, and the energy acquisition range needs to be improved.

[0006] To achieve the above technical purpose, the present invention adopts the following technical solutions: The present invention provides a wave energy power generation device, including: An installation part; A swing arm, having a rotating member rotatably installed on the installation part. The two ends of the rotating member are respectively a counterweight end and a power generation end, and the distance between the power generation end and the rotation center of the rotating member is greater than the distance between the counterweight end and the rotation center of the rotating member; A generator, installed on the rotating member; and A power generation rolling part, rotatably installed on the power generation end and rolling against the installation part. The power generation rolling part is in transmission connection with the rotor of the generator, and can drive the rotor to rotate when rotating around its own axis.

[0007] In some embodiments, the installation part has a power generation spherical surface; The rotating member can rotate relative to the installation part in any direction, and the power generation rolling part rolls against the power generation spherical surface.

[0008] In some embodiments, the wave energy power generation device further includes a rotating seat, and the rotating seat is rotatably installed at the power generation end; The power generation rolling part is rotatably installed on the rotating seat, and its rotation axis intersects with the rotation axis of the rotating seat, and both it and the generator are installed on the power generation end via the rotating seat.

[0009] In some embodiments, the installation part further has a counterweight spherical surface surrounding the counterweight end; The wave energy power generation device further includes a counterweight rolling part, and the counterweight rolling part is rotatably installed at the counterweight end and rolls against the counterweight spherical surface.

[0010] In some embodiments, the installation part has a power generation cavity and a counterweight cavity that communicate with each other. Both the power generation cavity and the counterweight cavity are hemispherical, and a stepped surface is formed between the two; The power generation spherical surface is formed on the inner wall of the power generation cavity, the counterweight spherical surface is formed on the inner wall of the counterweight cavity, and the axis of the rotating member, the center of the power generation cavity, and the center of the counterweight cavity coincide.

[0011] In some embodiments, the counterweight rolling part can rotate relative to the counterweight end in any direction.

[0012] In some embodiments, the power generation rolling part includes a power generation roller and a driving gear. The power generation roller is rotatably installed at the power generation end, and the driving gear is installed on the power generation roller and is located on one side of the power generation roller in the axial direction; The wave energy power generation device further includes a transmission gear, and the transmission gear is installed on the rotor and meshes with the driving gear.

[0013] In some embodiments, there are two driving gears, and the two driving gears are located on both sides of the power generation roller in the axial direction; There are two generators and two transmission gears respectively. The two transmission gears correspond to the two generators one by one and are respectively meshed with the two driving gears.

[0014] In some embodiments, the wave energy power generation device further includes a variety of counterweight blocks with different masses, and they can be selectively installed at the counterweight end. Each counterweight block is detachably connected to the counterweight end.

[0015] In some embodiments, the counterweight end is provided with threaded holes, and each counterweight block is provided with an assembly screw corresponding to the threaded hole. The assembly screw is threadedly connected to the counterweight end via the threaded hole.

[0016] Compared with the prior art, in the wave energy power generation device provided by the present invention, the swing arm takes the axis of the rotating member as the activity center. Since the power generation rolling part is arranged at the power generation end, the distance between the power generation rolling part and the rotation center of the rotating member is greater than the distance between the counterweight end and the rotation center of the rotating member. By using the lever amplification principle, the small displacement change of the counterweight end is amplified, making the displacement change at the power generation end more obvious, thereby expanding the rolling stroke of the power generation rolling part. In this way, when the device is in a small-amplitude wave environment, the small amplitude of the wave can be converted into a large rolling stroke of the power generation rolling part, and further expand the rotation stroke of the rotor of the generator. Therefore, this solution overcomes the usage limitations and defects that are prone to stagnation in small-amplitude waves by using the lever amplification principle, expands the energy acquisition range, and improves the energy acquisition advantage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of the wave energy power generation device provided by an embodiment of the present invention; Figure 2 is Figure 1 a schematic diagram of the installation part in Figure 3 is Figure 1 a schematic diagram of the wave energy power generation device without showing the installation part; Figure 4 is Figure 3 a schematic diagram of the swing arm, the power generation rolling part and the generator in

[0018] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Installation part; 1a. Power generation cavity; 1b. Counterweight cavity; 11. Power generation spherical surface; 12. Counterweight spherical surface; 13. Step surface; 2. Swing arm; 21. Rotating member; 21a. Axis; 22. Counterweight end; 23. Power generation end; 3. Generator; 4. Power generation rolling part; 41. Power generation roller; 42. Driving gear; 5. Rotating seat; 6. Counterweight rolling part; 7. Transmission gear; 8. Counterweight block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] In order to solve the technical problems in the prior art that when the device is in an environment of small-amplitude waves, the rotation stroke of the fan blade is small, it is even prone to getting stuck, and the energy harvesting range needs to be improved, the present invention provides a wave energy power generation device, which can convert the small amplitude of the wave into a large rolling stroke of the power generation rolling part, thereby expanding the rotation stroke of the rotor of the generator. That is, by using the lever amplification principle, it overcomes the usage limitations and defects that are prone to getting stuck in small-amplitude waves, expands the energy harvesting range, and improves the energy harvesting advantage.

[0021] Please refer to Figures 1 to 3 , Figures 1 to 3 FIG. is a schematic structural diagram of a wave energy power generation device in an embodiment of the present invention. The wave energy power generation device includes an installation part 1, a swing arm 2, a generator 3 and a power generation rolling part 4; the swing arm 2 has a rotating part 21 rotatably installed on the installation part 1. The two ends of the rotating part 21 are respectively a counterweight end 22 and a power generation end 23. The distance between the power generation end 23 and the rotation center of the rotating part 21 is greater than the distance between the counterweight end 22 and the rotation center of the rotating part 21; the generator 3 is installed on the rotating part 21; the power generation rolling part 4 is rotatably installed on the power generation end 23 and rolls against the installation part 1. The power generation rolling part 4 is in transmission connection with the rotor of the generator 3 and can drive the rotor to rotate when rotating around its own axis. Specifically, the power generation rolling part 4 can rotate around its own axis when following the rotation of the power generation end 23.

[0022] In the wave energy power generation device provided by the present invention, the swing arm 2 takes the axis 21a of the rotating part 21 as the moving center. Since the power generation rolling part 4 is arranged at the power generation end 23, the distance between the power generation rolling part 4 and the rotation center of the rotating part 21 is greater than the distance between the counterweight end 22 and the rotation center of the rotating part 21. By using the lever amplification principle, the small displacement change of the counterweight end 22 is amplified, making the displacement change of the power generation end 23 more obvious, thereby expanding the rolling stroke of the power generation rolling part 4. In this way, when the device is in an environment of small-amplitude waves, it can convert the small amplitude of the wave into a large rolling stroke of the power generation rolling part 4, thereby expanding the rotation stroke of the rotor of the generator 3. Therefore, this solution overcomes the usage limitations and defects that are prone to getting stuck in small-amplitude waves by using the lever amplification principle, expands the energy harvesting range, and improves the energy harvesting advantage.

[0023] In one of the embodiments, the installation part 1 has a power generation spherical surface 11, and the power generation spherical surface 11 surrounds the power generation rolling part 4; the rotating part 21 can rotate relative to the installation part 1 in any direction, and the power generation rolling part 4 rolls against the power generation spherical surface 11.

[0024] In this embodiment, the rotating part 21 rotates in all directions relative to the installation part 1, and the power generation rolling part 4 is pressed against the power generation spherical surface 11, so that the power generation rolling part 4 can move synchronously with the rotating part 21, and further enables the device to better utilize small-amplitude waves with variable directions, and further improves its energy harvesting advantage.

[0025] In one embodiment, the wave energy power generation device further includes a rotating seat 5, and the rotating seat 5 is rotatably mounted on the power generation end 23; the power generation rolling part 4 is rotatably mounted on the rotating seat 5, and its rotation axis intersects with the rotation axis of the rotating seat 5, and both it and the generator 3 are mounted on the power generation end 23 via the rotating seat 5.

[0026] In this embodiment, since the rotation axis of the power generation rolling part 4 intersects with the rotation axis of the rotating seat 5, the power generation rolling part 4 can rotate in all directions relative to the power generation end 23, forming a universal roller, making the movement of the power generation rolling part 4 on the power generation spherical surface 11 more flexible. And the generator 3 is placed on the rotating seat 5, facilitating the power generation rolling part 4 to drive the rotor to rotate.

[0027] In one embodiment, the mounting part 1 further has a counterweight spherical surface 12, and the counterweight spherical surface 12 surrounds the counterweight end 22; the wave energy power generation device further includes a counterweight rolling part 6, and the counterweight rolling part 6 is rotatably mounted on the counterweight end 22 and rolls against the counterweight spherical surface 12.

[0028] In this embodiment, the counterweight rolling part 6 is provided at the counterweight end 22 and rolls against the counterweight spherical surface 12, making both ends of the swing arm 2 rollingly connected to the mounting part 1 and making the movement of the swing arm 2 more flexible.

[0029] It should be noted that the mounting part 1 can be set as a seat body, a frame body or other forms. The rotating member 21 can be set as a rotating shaft, a universal joint or other structures on the swing arm 2 to rotatably connect with the mounting part 1.

[0030] In one embodiment, the mounting part 1 has a power generation cavity 1a and a counterweight cavity 1b that are connected to each other. Both the power generation cavity 1a and the counterweight cavity 1b are hemispherical, and a step surface 13 is formed between the two; the power generation spherical surface 11 is formed on the inner wall of the power generation cavity 1a, the counterweight spherical surface 12 is formed on the inner wall of the counterweight cavity 1b, and the axis 21a of the rotating member 21, the center of the power generation cavity 1a and the center of the counterweight cavity 1b coincide.

[0031] In this embodiment, the power generation rolling part 4 is directly rolled against the inner wall of the power generation cavity 1a, and the counterweight rolling part 6 is rolled against the inner wall of the counterweight cavity 1b. Since the axis 21a of the rotating member 21, the center of the power generation cavity 1a and the center of the counterweight cavity 1b coincide, the rotating member 21 does not need to have a direct connection relationship with the mounting part 1, that is, it can rotate relative to the mounting part 1 in any direction. At the same time, the step surface 13 can effectively isolate the power generation end 23 and the counterweight end 22, preventing the displacement of both and ensuring the stability of the device.

[0032] It should be understood that based on the above embodiments, the inner diameter of the power generation cavity 1a is greater than the inner diameter of the counterweight cavity 1b. And in this solution, the rotating member 21 is a part of the swing arm 2.

[0033] In one embodiment, the counterweight rolling part 6 can rotate relative to the counterweight end 22 in any direction.

[0034] In this embodiment, the counterweight rolling part 6 is arranged to be able to rotate relative to the counterweight end 22 in any direction, so that the counterweight rolling part 6 can rotate flexibly relative to the counterweight spherical surface 12, realizing the multi-dimensional utilization of the wave energy by the device, not limited to the wave energy in the vertical dimension and the horizontal dimension, improving the working performance and energy conversion efficiency of the device under random wave conditions; and the mechanical structure is relatively simple, with high fault tolerance and stable working performance.

[0035] It should be noted that the power generation rolling part 4 and the rotor of the generator 3 can be driven by a belt, or directly by friction, or in other forms. In addition, the power generation rolling part 4 and the counterweight rolling part 6 can be arranged in the form of rollers, drums or balls.

[0036] In one embodiment, please refer to Figure 4 , the power generation rolling part 4 includes a power generation roller 41 and a driving gear 42. The power generation roller 41 is rotatably installed at the power generation end 23, and the driving gear 42 is installed on the power generation roller 41 and is located on one side of the power generation roller 41 in the axial direction; the wave energy power generation device further includes a transmission gear 7, and the transmission gear 7 is installed on the rotor and meshes with the driving gear 42.

[0037] In this embodiment, the power generation rolling can rotate around its own axis when following the power generation rotation, so as to drive the rotor of the generator 3 to rotate through the cooperation of the driving gear 42 and the transmission gear 7 to realize power generation. It should be noted that in this embodiment, the size of the transmission gear 7 is smaller than the size of the driving gear 42.

[0038] In one embodiment, there are two driving gears 42, and the two driving gears 42 are located on both sides of the power generation roller 41 in the axial direction; there are two generators 3 and two transmission gears 7 respectively. The two transmission gears 7 correspond to the two generators 3 one by one and are respectively meshed with the two driving gears 42.

[0039] In this embodiment, a generator 3 is arranged on both sides of the power generation roller 41 in the axial direction, and power generation is carried out through gear transmission, improving the balance of the power generation roller 41 and further improving the conversion efficiency of wave energy.

[0040] In one embodiment, the wave energy power generation device further includes a variety of counterweight blocks 8, the masses of the variety of counterweight blocks 8 are different, and they can be selectively installed on the counterweight end 22, and each counterweight block 8 is detachably connected to the counterweight end 22.

[0041] In this embodiment, a counterweight block 8 with a corresponding mass can be selected according to actual needs, so that the device can be suspended at different heights in seawater, and the wave energy at different heights can be utilized to improve the practicability. The replaceable setting of the counterweight block 8 is also considered based on the swing amplitude of the swing arm 2, so that while ensuring that the slight movement of the counterweight end 22 is converted into a large movement of the power generation end 23, the stability of the device is also ensured. It should be understood that in this solution, the center of gravity of the device is located in the counterweight cavity 1b. Specifically, the counterweight rolling part 6 is installed on the counterweight end 22 through the counterweight block 8.

[0042] It should be noted that the counterweight block 8 and the counterweight end 22 can be detachably connected through a pin hole, a buckle or other structures.

[0043] In one embodiment, the counterweight end 22 is provided with a threaded hole (not shown), and each counterweight block 8 is provided with an assembly screw (not shown) corresponding to the threaded hole, and the assembly screw is threadedly connected to the counterweight end 22 through the threaded hole.

[0044] In this embodiment, the detachable connection between the counterweight block 8 and the counterweight end 22 is realized through the assembly screw on the counterweight block 8, and the structure is simple and reliable. In addition, it should be noted that in one embodiment, the installation part 1 includes two shells, the two shells respectively form a power generation cavity 1a and a counterweight cavity 1b, and the two are detachably connected through a flange and bolts.

[0045] For a better understanding of the present invention, the following combines Figures 1 to 4 to detail the technical solution of the present invention: When this solution is in the working state, under the action of the sea wave, the device starts to move up and down. The bottom counterweight causes the universally arranged counterweight rolling part 6 to generate displacement in advance, and then drives the rotating seat 5 on the swing arm 2 to rotate, thereby driving the universally arranged power generation roller 41 to freely rotate along the inner wall of the power generation cavity 1a. Among them, the power generation roller 41 meshes with the transmission gears 7 of the generators 3 on both axial sides through the driving gear 42, and then drives the rotor of the generator 3 to rotate, so that the rotor cuts the magnetic induction line to generate electricity.

[0046] Since the length of the swing arm 2 is designed to be longer at the top and shorter at the bottom, using the lever amplification principle, the slight displacement change of the counterweight end 22 is amplified, making the top displacement change more obvious.

[0047] In this way, by combining the design with a pendulum having a high degree of freedom, the multi-dimensional utilization of the wave energy by the mechanical structure is realized, and the principle of lever amplification is utilized to overcome the limitations and defects of being prone to stagnation in small-amplitude waves, expand its energy harvesting advantage, improve the working performance and energy conversion efficiency of the device under random wave conditions; moreover, the mechanical structure is relatively simple, has a high fault tolerance, and has a stable working performance, enabling better utilization of small-amplitude waves with variable directions.

[0048] The specific embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A wave energy power generation device, characterized in that, Comprising: Installation part; Swing arm, having a rotating member rotatably installed on the installation part, with two ends of the rotating member being a counterweight end and a power generation end respectively, and the distance between the power generation end and the rotation center of the rotating member being greater than the distance between the counterweight end and the rotation center of the rotating member; Generator, installed on the rotating member; And Power generation rolling part, rotatably installed on the power generation end and rolling against the installation part, the power generation rolling part being in transmission connection with the rotor of the generator and capable of driving the rotor to rotate when rotating around its own axis.

2. The wave energy power generation device according to claim 1, wherein The installation part has a power generation spherical surface; The rotating member can rotate relative to the installation part in any direction, and the power generation rolling part rolls against the power generation spherical surface.

3. The wave energy power generation device according to claim 2, characterized in that, The wave energy power generation device further includes a rotating seat, and the rotating seat is rotatably installed on the power generation end; The power generation rolling part is rotatably installed on the rotating seat, and its rotation axis intersects with the rotation axis of the rotating seat, and both the power generation rolling part and the generator are installed on the power generation end via the rotating seat.

4. The wave energy power generation device according to claim 2, characterized in that, The installation part further has a counterweight spherical surface surrounding the counterweight end; The wave energy power generation device further includes a counterweight rolling part, and the counterweight rolling part is rotatably installed on the counterweight end and rolls against the counterweight spherical surface.

5. The wave energy power generation device according to claim 4, characterized in that The installation part has a power generation cavity and a counterweight cavity that are connected, both the power generation cavity and the counterweight cavity are hemispherical, and a step surface is formed between the two; The power generation spherical surface is formed on the inner wall of the power generation cavity, the counterweight spherical surface is formed on the inner wall of the counterweight cavity, and the axis center of the rotating member, the center of the power generation cavity, and the center of the counterweight cavity coincide.

6. The wave energy power generation device according to claim 4, characterized in that, The counterweight rolling part can rotate relative to the counterweight end in any direction.

7. The wave energy power generation device according to claim 1, characterized in that The power generation rolling part includes a power generation roller and a driving gear, the power generation roller is rotatably installed on the power generation end, the driving gear is installed on the power generation roller and is located on one side of the axial direction of the power generation roller; The wave energy power generation device further includes a transmission gear, the transmission gear is installed on the rotor and meshes with the driving gear.

8. The wave energy power generation device according to claim 7, characterized in that, There are two driving gears, and the two driving gears are located on both sides of the axial direction of the power generation roller; There are two generators and two transmission gears respectively, the two transmission gears correspond to the two generators one by one, and are respectively meshed with the two driving gears.

9. The wave energy power generation device according to claim 1, wherein The wave energy power generation device further includes a variety of counterweight blocks, the masses of the variety of counterweight blocks are different, and they can be selectively installed on the counterweight end, and each counterweight block is detachably connected to the counterweight end.

10. The wave energy power generation device according to claim 9, characterized in that, The counterweight end is provided with threaded holes, and each counterweight block is provided with an assembly screw corresponding to the threaded hole, and the assembly screw is threadedly connected to the counterweight end through the threaded hole.

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