Raft type wave power generation device

Abstract

This invention discloses a raft-type wave energy generation device, comprising: several raft units connected in series; each raft unit includes: a raft shell, a first power generation component, a second power generation component, and a generator; the first power generation component is disposed at one end inside the raft shell, used to convert the elevation difference between adjacent raft units into a co-directional rotational output, driving the generator to generate electricity; the second power generation component is disposed at the other end inside the raft shell, used to convert the oscillation or rotation of the raft unit along its axis into a co-directional rotational output, driving the generator to generate electricity; the end face of the raft shell with the first power generation component is provided with a connecting seat, and adjacent raft units are connected to one end of the input shaft of the first power generation component through the connecting seat to form a series connection. This invention achieves dual-end collaborative capture of multi-degree-of-freedom wave energy, and has advantages such as strong extensibility, continuous and stable power generation, high energy capture efficiency, and convenient maintenance, making it suitable for the construction of large-scale wave energy power plants.

Description

Technical Field

[0001] This invention relates to the field of wave energy power generation technology, and in particular to a raft-type wave energy power generation device with multiple degrees of freedom. Background Technology

[0002] With the continuous development of human society and the world economy, traditional energy sources are becoming increasingly scarce, and the ecological environment is suffering from serious pollution and damage. The large-scale use of fossil fuels has caused serious ecological and environmental problems. Under these circumstances, humanity has gradually turned its attention to the vast field of ocean energy.

[0003] Compared with traditional energy sources, ocean energy resources do not produce environmental pollution or produce less pollution during utilization. Ocean energy not only has huge global reserves, but also exists in the ocean in various forms. It is a clean energy source. Increasing the development and utilization of ocean wave energy is of great significance for alleviating energy shortages and optimizing my country's energy structure.

[0004] Currently, there are numerous types of wave energy generation devices for development and utilization. Due to differences in the mechanisms by which these devices capture wave energy, as well as variations in installation location and water depth, the methods of converting wave energy into electrical energy are also diverse. Based on their working principles, wave energy generation devices can be broadly classified into three categories: oscillating water column type, oscillating body type, and wave-surpassing type. Each of these categories can be further subdivided into fixed, floating, and submerged types. Different wave energy generation devices possess different structural and mechanical characteristics, and in practical design and applications, they utilize hydraulic cylinders, water turbines, linear generators, and other technologies to achieve energy conversion and output.

[0005] In recent years, wave energy generation devices have evolved into various types. Among them, multi-degree-of-freedom raft-type wave energy generation devices have high power generation efficiency, flexible equipment layout, and are easy to cluster, making them one of the hot topics in wave energy generation device research. Existing oscillating float-type wave energy generation devices are difficult to guarantee continuous and efficient power generation during cluster deployment, have poor stability, complex structures, and high costs. The power generation devices are mostly independent equipment, and when array deployment is required, multiple sets of devices are usually deployed independently, resulting in low scalability, difficulty in array deployment, large deployment workload, and difficult subsequent maintenance. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a raft-type wave energy generation device to solve the technical problems of low energy capture efficiency, difficulty in array deployment, and low scalability in existing technologies.

[0007] This invention provides a raft-type wave energy generation device, comprising: several raft units connected in series; each raft unit includes: a raft shell, a first power generation component, a second power generation component, and a generator; the first power generation component is disposed at one end inside the raft shell and is used to convert the change in elevation difference between adjacent raft units into a co-rotation output to drive the generator to generate electricity; the second power generation component is disposed at the other end inside the raft shell and is used to convert the oscillation or rotation of the raft unit along the axis into a co-rotation output to drive the generator to generate electricity; the end face of the raft shell at the end where the first power generation component is located is provided with a connecting seat, and adjacent raft units are connected to one end of the input shaft of the first power generation component through the connecting seat to form a series splicing.

[0008] Furthermore, the first power generation component includes: a T-shaped connecting rod, a first drive shaft, a second drive shaft, and an output shaft; the T-shaped connecting rod serves as the input shaft of the first power generation component, with one end of the vertical rod hinged to the connecting seat, and internal ratchet gears respectively fitted at both ends of the crossbeam, with the two internal ratchet gears rotating in opposite directions; both the first and second drive shafts are drive shafts with a gear at one end and a bevel gear at the other end, with the gear meshing with the internal ratchet gear; one end of the output shaft has a bevel gear, which meshes with the bevel gears in the first and second drive shafts; the change in elevation between two adjacent raft units is converted into the up-and-down swing of the T-shaped connecting rod around the crossbeam as an axis, and the rotation of the crossbeam is achieved by the internal ratchet gears at both ends, the first drive shaft, and the second drive shaft to realize the same-direction rotation of the output shaft.

[0009] Furthermore, the second power generation component includes: a pendulum and a commutation mechanism; the pendulum is hinged to the input shaft of the commutation mechanism, and the commutation mechanism converts the swing of the pendulum into a same-direction output.

[0010] Furthermore, the second power generation component also includes: a pendulum energy-boosting mechanism, which includes: a base, a spherical shell, a disc, a connecting rod shaft, an arc-shaped rod, and a counterweight; the base is fixed to the inner wall of the raft shell; the two coaxial ends of the spherical shell are concave inward to form a flared mouth, with an opening at the bottom of the concave opening, and the arc-shaped top of the spherical shell is fixed to the base; the center of the disc is spherical, and the disc is placed inside the spherical shell, with the spherical part of the disc and the opening of the spherical shell forming a hinge, and the disc rotates inside the spherical shell around the spherical part; the connecting rod shaft passes through the spherical part of the disc along the axis of the disc, with one end hinged to the top of the pendulum rod and the other end suspended; the arc-shaped rod is semi-circular, straddling the spherical shell, with both ends connected to the two ends of the connecting rod shaft, and the arc-shaped rod swings with the rotation of the disc; the counterweight is disposed on the arc-shaped rod.

[0011] Furthermore, the reversing mechanism includes: a housing, a reversing input shaft, a reversing transmission gear, and a reversing output shaft; the reversing input shaft passes through the housing, with one end outside the housing hinged to the pendulum, and one end inside the housing provided with a ratchet, and a gear is sleeved on the reversing input shaft; the reversing output shaft passes through the housing, with one end outside the housing connected to the generator input shaft, and one end inside the housing sleeved with a gear, the outer ring of the gear having conventional teeth, the inner ring of the gear having ratchet teeth, the outer ring teeth being opposite to the ratchet teeth, and the ratchet teeth meshing with the ratchet of the reversing input shaft; the reversing transmission gear is disposed on the side wall of the housing, and meshes with the outer ring teeth of the gear on the reversing input shaft and the gear on the reversing output shaft, respectively.

[0012] Furthermore, the connecting seat is circular and embedded in the side wall of the raft hull. The connecting seat rotates relative to the raft hull along the axis. The center of the connecting seat is provided with a ball joint groove. The top of the vertical rod of the T-shaped connecting rod is a ball head. The T-shaped connecting rod forms a ball joint with the groove of the connecting seat through the ball head.

[0013] Furthermore, the raft hull has a flat, streamlined shape.

[0014] Furthermore, the generator is a dual-input generator.

[0015] The beneficial effects of this invention are:

[0016] This invention utilizes a first power generation component and a second power generation component respectively located at both ends of a flat, streamlined raft hull. A T-shaped connecting rod and ratchet reversing mechanism convert the elevation difference between adjacent raft units into unidirectional rotation of the generator. Simultaneously, a pendulum energy-enhancing mechanism and a reversing mechanism convert the raft's oscillation along the axis into unidirectional output, achieving dual-end collaborative capture of multi-degree-of-freedom wave energy. Each raft unit is connected in series via a ball joint connector to form a modular array, exhibiting significant advantages such as high ductility, continuous and stable power generation, high energy capture efficiency, and convenient maintenance. Attached Figure Description

[0017] The features and advantages of the invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the invention in any way. In the drawings:

[0018] Figure 1 This is a perspective view of a specific embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of a specific embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the raft unit according to a specific embodiment of the present invention;

[0021] Figure 4 This is a side view of a specific embodiment of the present invention;

[0022] Figure 5This is a schematic diagram of a power generation component according to a specific embodiment of the present invention;

[0023] Figure 6 This is a perspective view of the first power generation component according to a specific embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the gear assembly within the reversing mechanism of a specific embodiment of the present invention;

[0025] Figure 8 This is a perspective view of the pendulum energy-enhancing mechanism according to a specific embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of a portion of the pendulum energy-enhancing mechanism according to a specific embodiment of the present invention;

[0027] Figure 10 This is a cross-sectional view of the housing of the pendulum energy-boosting mechanism according to a specific embodiment of the present invention. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The present invention will be further illustrated below with reference to specific embodiments. Those skilled in the art should understand that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Modifications to the present invention in various equivalent forms all fall within the scope defined by the appended claims.

[0030] This invention provides, for example Figures 1 to 10 As shown, this embodiment provides a raft-type wave energy generation device, including a raft unit 1 connected in series.

[0031] Each raft unit 1 includes: raft shell 2, first power generation component 3, second power generation component 4, and dual-input generator 5; the raft shell 2 has a flat and streamlined shape, is made of high-strength composite material, and forms a sealed cavity inside to accommodate each power generation component.

[0032] The first power generation component 3 is disposed at one end inside the raft hull 2, and includes:

[0033] The system comprises a T-shaped connecting rod 6, a first drive shaft 7, a second drive shaft 8, and an output shaft 9. The T-shaped connecting rod 6 serves as the input shaft of the first power generation component 3. One end of its vertical rod is hinged to the connecting seat 10, and the two ends of its crossbeam are respectively fitted with a first internal ratchet gear 11 and a second internal ratchet gear 12, with the two internal ratchet gears rotating in opposite directions. Both the first drive shaft 7 and the second drive shaft 8 have a cylindrical gear at one end and a bevel gear at the other, with the cylindrical gear meshing with the first internal ratchet gear 11 and the second internal ratchet gear 12. One end of the output shaft 9 has a bevel gear, which meshes with the bevel gears of both the first drive shaft 7 and the second drive shaft 8, while the other end is connected to the first input end of the dual-input generator 5.

[0034] The second power generation component 4 is located at the other end of the raft hull 2 ​​and includes: a pendulum 13, a reversing mechanism 14, and a pendulum energy-boosting mechanism 15. The pendulum energy-boosting mechanism 15 includes: a base 16, a spherical shell 17, a disc 18, a connecting rod shaft 19, an arc-shaped rod 20, and a counterweight 21.

[0035] The base 16 is fixed to the inner wall of the raft shell 2. The two coaxial ends of the spherical shell 17 are concave inward in a funnel shape, with an opening at the bottom of the concave area. The arc apex of the spherical shell 17 is fixed to the base 16.

[0036] The center of the disk 18 is spherical and is placed inside the spherical shell 17. The sphere 181 of the disk 18 is hinged to the opening of the spherical shell 17, allowing the disk 18 to rotate freely within the spherical shell 17 around the sphere 181. The connecting rod shaft 19 passes through the sphere along the axis of the disk 18, with one end hinged to the top of the pendulum rod of the pendulum 13 and the other end suspended in the air.

[0037] The curved rod 20 is semi-circular and spans the spherical shell 17. Its two ends are connected to the two ends of the connecting rod shaft 19, and it swings as the disk 18 rotates. Counterweights 21 are set at both ends of the curved rod 20 to enhance the swing inertia.

[0038] The reversing mechanism 14 includes: a housing 22, a reversing input shaft 23, a reversing transmission gear 24, and a reversing output shaft 25.

[0039] The reversing input shaft 23 passes through the housing 22, and is hinged to the pendulum 13 at one end outside the housing 22. A first pawl 26 is provided at one end inside the housing 22, and a first gear 27 is sleeved on the reversing input shaft 23.

[0040] The commutation output shaft 25 passes through the housing 22, and one end outside the housing 22 is connected to the second input end of the dual-input generator 5. A second gear 28 is sleeved on one end inside the housing 22. The outer ring of the second gear 28 is a conventional tooth, and the inner ring is a ratchet tooth. The outer ring teeth and the ratchet teeth are in opposite directions, and the inner ring ratchet teeth mesh with the first pawl 26.

[0041] The reversing transmission gear 24 is disposed on the side wall of the housing 22 and meshes with the outer ring teeth of the first gear 27 and the second gear 28 respectively.

[0042] The raft hull 2 ​​has a connecting seat 10 embedded in the end face of the first power generation component 3. The connecting seat 10 is circular and can rotate relative to the raft hull 2 ​​along its axis.

[0043] The center of the connecting seat 10 has a groove for ball joint, and the top of the vertical rod of the T-shaped connecting rod 6 is a ball head. The ball head and the groove cooperate to form a ball joint. Adjacent raft units 1 are connected to the ball head of the T-shaped connecting rod 6 through the connecting seat 10 to achieve series splicing.

[0044] The working principle of this embodiment is as follows: When waves act on the raft-type wave energy power generation device, a change in elevation occurs between adjacent raft units 1. This relative motion is transmitted to the T-shaped connecting rod 6 through the connecting seat 10, causing the T-shaped connecting rod 6 to swing up and down with its crossbeam as the axis. When the T-shaped connecting rod 6 swings upward, the first internal ratchet gear 11 is subjected to force and rotates, driving the output shaft 9 to rotate unidirectionally through the first transmission shaft 7; when the T-shaped connecting rod 6 swings downward, the second internal ratchet gear 12 is subjected to force and rotates, driving the output shaft 9 to maintain rotation in the same direction through the second transmission shaft 8, thereby realizing unidirectional continuous power generation at the first input end of the dual-input generator 5. Simultaneously, the oscillation or rotation of raft unit 1 along its axis is amplified and transmitted to pendulum 13 via pendulum energy amplification mechanism 15. The oscillation of pendulum 13 drives the reversing input shaft 23 to reciprocate. Through the meshing of the first pawl 26 with the inner ring ratchet of the second gear 28 and the transition of the reversing transmission gear 24, regardless of whether the reversing input shaft 23 rotates forward or backward, the reversing output shaft 25 maintains unidirectional rotation, driving the second input end of the dual-input generator 5 to generate electricity. Thus, the power generation components at both ends of a single raft unit 1 work together to achieve efficient capture and conversion of multi-degree-of-freedom wave energy.

[0045] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A raft-type wave energy generation device, characterized in that, include: Several raft units are connected in series. Each raft unit includes a raft shell, a first power generation component, a second power generation component, and a generator. The first power generation component is located at one end inside the raft shell and is used to convert the elevation difference between adjacent raft units into a co-rotation output to drive the generator to generate electricity. The second power generation component is located at the other end inside the raft shell and is used to convert the swaying or rotation of the raft unit along the axis into a co-rotation output to drive the generator to generate electricity. The end face of the raft shell with the first power generation component is provided with a connecting seat, and adjacent raft units are connected to one end of the input shaft of the first power generation component through the connecting seat to form a series splicing.

2. The raft-type wave energy generation device as described in claim 1, characterized in that, The first power generation component includes: a T-shaped connecting rod, a first drive shaft, a second drive shaft, and an output shaft; the T-shaped connecting rod serves as the input shaft of the first power generation component, with one end of the vertical rod hinged to the connecting seat, and internal ratchet gears respectively fitted at both ends of the crossbeam, with the two internal ratchet gears rotating in opposite directions; both the first and second drive shafts are drive shafts with a gear at one end and a bevel gear at the other end, with the gear meshing with the internal ratchet gear; one end of the output shaft has a bevel gear, which meshes with the bevel gears in the first and second drive shafts; the change in elevation between two adjacent raft units is converted into the up-and-down swing of the T-shaped connecting rod around the crossbeam as an axis, and the rotation of the crossbeam is achieved by the internal ratchet gears at both ends, the first drive shaft, and the second drive shaft to achieve the same-direction rotation of the output shaft.

3. The raft-type wave energy generation device as described in claim 1, characterized in that, The second power generation component includes a pendulum and a commutation mechanism; the pendulum is hinged to the input shaft of the commutation mechanism, and the commutation mechanism converts the swing of the pendulum into a same-direction output.

4. The raft-type wave energy generation device as described in claim 3, characterized in that, The second power generation component further includes a pendulum energy-boosting mechanism, which comprises a base, a spherical shell, a disc, a connecting rod shaft, an arc-shaped rod, and a counterweight. The base is fixed to the inner wall of the raft shell. The two coaxial ends of the spherical shell are concave inward to form a flared mouth, with an opening at the bottom of the concave portion. The apex of the spherical shell is fixed to the base. The center of the disc is spherical, and the disc is placed inside the spherical shell. The spherical part of the disc and the opening of the spherical shell form a hinge, and the disc rotates inside the spherical shell around the spherical part. The connecting rod shaft passes through the spherical part of the disc along the axis of the disc, with one end hinged to the top of the pendulum rod and the other end suspended. The arc-shaped rod is semi-circular and spans the spherical shell. Both ends are connected to the two ends of the connecting rod shaft, and the arc-shaped rod swings with the rotation of the disc. The counterweight is disposed on the arc-shaped rod.

5. The raft-type wave energy generation device as described in claim 3 or 4, characterized in that, The reversing mechanism includes: a housing, a reversing input shaft, a reversing transmission gear, and a reversing output shaft; the reversing input shaft passes through the housing, with one end outside the housing hinged to a pendulum, and one end inside the housing equipped with a ratchet; a gear is sleeved on the reversing input shaft; the reversing output shaft passes through the housing, with one end outside the housing connected to a generator input shaft; a gear is sleeved on one end inside the housing, the outer ring of the gear having conventional teeth, the inner ring of the gear having ratchet teeth, the outer ring teeth being opposite to the ratchet teeth, and the ratchet teeth meshing with the ratchet of the reversing input shaft; the reversing transmission gear is located on the side wall of the housing and meshes with the outer ring teeth of the gear on the reversing input shaft and the gear on the reversing output shaft, respectively.

6. The raft-type wave energy generation device as described in claim 2, characterized in that, The connecting seat is circular and is embedded in the side wall of the raft hull. The connecting seat rotates relative to the raft hull along the axis. The center of the connecting seat is provided with a ball joint groove. The top of the vertical rod of the T-shaped connecting rod is a ball head. The T-shaped connecting rod forms a ball joint with the groove of the connecting seat through the ball head.

7. The raft-type wave energy generation device as described in claim 1, characterized in that, The raft hull has a flat, streamlined shape.

8. The raft-type wave energy generation device as described in claim 1, characterized in that, The generator is a dual-input generator.

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