Mechanical wave energy conversion system
The mechanical wave energy conversion system, utilizing a main shaft, driven gear shaft, and ratchet transmission mechanism, solves the problems of complex structure, poor reliability, and low power generation efficiency of existing wave energy power generation devices, and achieves efficient and stable power supply.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2024-12-27
- Publication Date
- 2026-06-30
AI Technical Summary
Existing wave energy power generation devices suffer from problems such as complex structure, poor reliability, high maintenance costs, low power generation efficiency, and significant environmental impact.
A mechanical wave energy conversion system is adopted, which uses a main shaft, driven gear shaft and ratchet transmission mechanism to achieve energy conversion through the relative motion of two floating bodies. The design of the main shaft, front and rear pawls and drive gear ensures the stable rotation of the permanent magnet generator.
It achieves a compact structure, convenient maintenance, and high energy conversion efficiency, and is suitable for various wave energy power generation devices that perform oscillation work, providing a stable power supply.
Smart Images
Figure CN122304900A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wave energy power generation devices, and proposes a mechanical wave energy conversion system. Background Technology
[0002] Wave energy is a clean and renewable marine energy source. Developing and utilizing wave energy is of great significance for improving the energy utilization structure, increasing the proportion of clean energy utilization, and solving environmental pollution problems.
[0003] The principle of wave energy generation devices is mainly to use the up-and-down motion of ocean waves to drive a generator. Common wave energy conversion technologies include oscillating water column type, pendulum type, point absorption type, and sea serpent type. The oscillating water column type device uses the up-and-down motion of ocean waves to push air in a closed space, creating pressure changes that drive a turbine to generate electricity. The pendulum type device uses waves to propel a pendulum, and the pendulum's oscillation drives the generator. The point absorption type device directly drives the generator through the up-and-down motion of a floating body under the influence of waves. The sea serpent type device uses waves to bend a series of connected floating bodies, thereby driving the generator.
[0004] The shortcomings of existing wave energy generation devices include: 1. Reliability issues: Wave power generation is greatly affected by weather and seasons. The instability of waves leads to large fluctuations in power generation, making it difficult to guarantee a stable power supply.
[0005] 2. High maintenance costs: Wave energy devices are usually located in harsh marine environments, and the equipment is susceptible to corrosion and biofouling, requiring frequent maintenance and replacement of parts.
[0006] 3. High initial investment: Wave energy power generation technology is still in the development stage, and the research and development and manufacturing costs of related equipment are high, resulting in a large initial investment for the overall project.
[0007] 4. Environmental impact: The installation and operation of wave energy devices may disrupt marine ecosystems, such as affecting marine life habitats and migration routes.
[0008] 5. Technological challenges: Wave energy conversion efficiency is relatively low. With current technology, the efficiency of converting wave energy into electricity is not as high as that of other renewable energy sources such as wind and solar power.
[0009] In addition, wave energy generation devices can be classified into pneumatic, hydraulic, hydraulic, and special motor types according to the different energy conversion systems.
[0010] Among them, pneumatic wave energy generators have a low energy conversion system, resulting in low overall wave-to-electricity conversion efficiency; hydraulic wave energy generators require the construction of large reservoirs based on favorable terrain, so this type of device is rarely used in practice; hydraulic wave energy generators are currently the most widely used type of device, but they have problems such as hydraulic oil leakage and easy corrosion failure of key power components; most special motor-type wave energy generators are currently in the laboratory research stage, and there are few demonstration operations in actual sea conditions.
[0011] Chinese invention patent CN117846855A discloses a mechanical power generation device based on ocean waves, relating to wave power generation. It includes a transmission gear with a rotating shaft at the center of one side surface. A driven gear is meshed with the sawtooth edge of the outer arc surface of the transmission gear. A connecting rod is fixedly installed at the edge of one side surface of the driven gear. A drive module is connected through one end of the connecting rod to one side surface of the driven gear. The drive module is placed on one side of the driven gear. Through the power generation module, when the squirrel-cage rotor starts to rotate, the coils of the stator assembly are passed through by a magnetic field. This converts the mechanical kinetic energy of the transmission module into electrical energy due to the rotation of the squirrel-cage rotor and the change in the magnetic field. This electrical energy is then matched and transmitted with the parallel gears within the transmission module, creating a linkage effect. This avoids the problems of low energy transfer efficiency and unstable output of wave energy by increasing the number of coils and improving the stability of power generation through the power generation module.
[0012] Chinese invention patent CN117249038A discloses a mechanical wave energy generation device, including a float, a reciprocating motion assembly, a gear mechanism, and two ratchet mechanisms. The input end of the reciprocating motion assembly is connected to the float. The gear mechanism includes a first bevel gear and a third bevel gear arranged opposite each other and rotatably connected to a first transmission shaft. The output end of the reciprocating motion assembly is connected to either the first or third bevel gear. A second bevel gear meshes between the first and third bevel gears. The two ratchet mechanisms are arranged opposite each other between the first and third bevel gears. The driving components of the two ratchet mechanisms are respectively connected to the first and third bevel gears, and the driven components of the two ratchet mechanisms are respectively mounted and fixed on the first transmission shaft. Through the cooperation of the two ratchet mechanisms and the gear mechanism, the bidirectional linear motion of the float following the rise and fall of the waves is converted into the continuous rotation of the generator main shaft in a single direction, thereby improving the utilization rate of wave energy.
[0013] The aforementioned technical solutions suffer from problems such as complex structure, large size and weight, and low conversion efficiency. Summary of the Invention
[0014] The purpose of this invention is to address the shortcomings of existing technologies by proposing a mechanical wave energy conversion system that solves the following technical problems: overcoming the shortcomings of existing devices such as complex composition, poor reliability, and high maintenance costs; and overcoming the problem of low power generation efficiency of pneumatic energy conversion systems.
[0015] To achieve the above objectives, the present invention adopts the following technical solution: a mechanical wave energy conversion system installed between two floating bodies. The system includes a main shaft, a first driven gear shaft, and a second driven gear shaft. The main shaft, the first driven gear shaft, and the second driven gear shaft are respectively equipped with a driving gear, a first driven gear, and a second driven gear. The main shaft is also equipped with a ratchet transmission mechanism, which is connected to the first floating body. The second driven gear shaft is installed on the second floating body. The first driven gear shaft is hinged to the second driven gear shaft through a bracket. The driving gear meshes with the first driven gear and the second driven gear in sequence. The main shaft is also equipped with a ratchet transmission mechanism.
[0016] Furthermore, a front pawl and a rear pawl are fixedly mounted on the main shaft, with the front pawl and the rear pawl facing opposite directions; the front pawl and the rear pawl can rotate synchronously with the shaft.
[0017] Furthermore, a front bearing and a rear bearing are mounted on the spindle.
[0018] Furthermore, a front drive gear is mounted on the front bearing, and the front drive gear can rotate around the main shaft via the front bearing.
[0019] Furthermore, a rear drive gear is mounted on the rear bearing, and the rear drive gear can rotate around the main shaft via the rear bearing.
[0020] Furthermore, the front drive gear is fixedly coaxially mounted with a front ratchet, and the front ratchet can rotate at the same angular velocity as the front drive gear.
[0021] Furthermore, the front ratchet and the front pawl mesh with each other. When the front pawl rotates clockwise, it can drive the front ratchet to rotate clockwise. When the front pawl rotates counterclockwise, the front pawl slides across the back of the ratchet teeth of the front ratchet, and the front ratchet cannot be driven.
[0022] Furthermore, the rear drive gear is fixedly coaxially mounted with a rear ratchet, which can rotate at the same angular velocity as the rear drive gear.
[0023] Furthermore, the front driving gear meshes internally with the front first driven gear, and the diameters of the rear driving gear and the rear driven gear are designed in proportion. The rotation of the rear driving gear can drive the rotation of the rear driven gear.
[0024] Furthermore, the rear driving gear meshes with the rear driven gear, and the diameters of the rear driving gear and the rear driven gear are designed proportionally. Rotation of the rear driving gear can drive the rear driven gear to rotate. The front second driven gear is connected to the front end shaft of the permanent magnet generator via a front second driven gear key. The rear driven gear is connected to the rear end shaft of the permanent magnet generator via a rear driven gear key. The permanent magnet generator is mounted on another floating body.
[0025] The beneficial effects of this invention are as follows: 1. Compared with the existing hydraulic energy conversion system, the mechanical wave energy device energy conversion system of this invention has a compact and simple structure, and is very convenient to maintain and repair; 2. Compared with the pneumatic wave energy conversion system, the mechanical wave energy device energy conversion system of this invention has a higher energy conversion efficiency.
[0026] 3. The mechanical wave energy conversion system of the present invention can be applied to various wave energy power generation devices that utilize oscillation to perform work, and has strong versatility. Attached Figure Description
[0027] Figure 1 This is a three-dimensional composition diagram of a mechanical wave energy conversion system according to the present invention; Figure 2 This is a top view of the components of a mechanical wave energy conversion system according to the present invention; Figure 3 This is a front view of the components of a mechanical wave energy conversion system according to the present invention; Figure 4 This is a rear view of the components of a mechanical wave energy conversion system according to the present invention; In the diagram: main shaft 1, front ratchet 2, rear ratchet 3, front pawl 4, rear pawl 5, front drive gear 6, rear drive gear 7, front main shaft bearing 8, rear main shaft bearing 9, front first driven gear shaft 10, front first driven gear 11, front second driven gear 12, front first driven gear bearing 13, front second driven gear key 14, permanent magnet generator front shaft 15, rear driven gear 16, permanent magnet generator rear shaft 17, rear driven gear key 18, permanent magnet generator 19. Detailed Implementation
[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0029] Example 1
[0030] As attached Figures 1-3As shown, a mechanical wave energy conversion system comprises key components including a main shaft 1, a front ratchet 2, a rear ratchet 3, a front pawl 4, a rear pawl 5, a front drive gear 6, a rear drive gear 7, a front main shaft bearing 8, a rear main shaft bearing 9, a front first driven gear shaft 10, a front first driven gear 11, a front second driven gear 12, a front first driven gear bearing 13, a front second driven gear key 14, a permanent magnet generator front shaft 15, a rear driven gear 16, a permanent magnet generator rear shaft 17, a rear driven gear key 18, and a permanent magnet generator 19. These components work together to achieve efficient conversion of wave energy into electrical energy.
[0031] In this system, the main shaft is typically mounted on one of the two objects that generate relative motion within the wave energy generator, and these two objects rotate around the main shaft. A front pawl and a rear pawl are fixedly mounted on the main shaft, and these two pawls are oriented in opposite directions, allowing them to rotate synchronously with the main shaft. To ensure stable rotation of the main shaft, a front bearing and a rear bearing are also mounted on it.
[0032] A front drive gear is mounted on the front bearing, which can rotate around the main shaft via the front bearing. Similarly, a rear drive gear is mounted on the rear bearing, which can also rotate around the main shaft via the rear bearing. The front drive gear is coaxially mounted with the front ratchet, allowing the front ratchet to rotate at the same angular velocity as the front drive gear. The front ratchet meshes with the front pawl. When the front pawl rotates clockwise, it effectively drives the front ratchet to rotate clockwise; when the front pawl rotates counterclockwise, the front pawl slides over the back of the ratchet teeth of the front ratchet, and the front ratchet is not driven.
[0033] The rear drive gear is coaxially mounted with the rear ratchet, allowing the rear ratchet to rotate at the same angular velocity as the rear drive gear. The rear ratchet meshes with the rear pawl. When the rear pawl rotates counterclockwise, it effectively drives the rear ratchet to rotate counterclockwise; when the rear pawl rotates clockwise, it slides over the back of the ratchet teeth of the rear ratchet, and the rear ratchet is not driven.
[0034] The meshing of the front ratchet and the front pawl allows the rotation of the front pawl to drive the rotation of the front ratchet. Similarly, the meshing of the rear ratchet and the rear pawl allows the rotation of the rear pawl to drive the rotation of the rear ratchet. The front drive gear meshes internally with the front first driven gear, and the diameters of the rear drive gear and the rear driven gear are designed in a certain ratio, so that the rotation of the rear drive gear can drive the rotation of the rear driven gear.
[0035] The first driven gear is mounted on a fixed shaft via a first driven bearing, and this fixed shaft is mounted on another float. The first driven gear meshes with the second driven gear, so the rotation of the first driven gear drives the rotation of the second driven gear. The meshing of the rear driving gear with the rear driven gear, and the proportional design of the diameters of the rear driving gear and the rear driven gear, ensure that the rotation of the rear driving gear drives the rotation of the rear driven gear.
[0036] The first driven gear is connected to the front shaft of the permanent magnet generator via a key, while the rear driven gear is connected to the rear shaft of the permanent magnet generator via a key. The permanent magnet generator is mounted on another floating body, thus completing the construction of the entire wave energy conversion system.
[0037] Through these carefully designed components and their interactions, the mechanical wave energy conversion system can efficiently convert wave energy into electrical energy, providing a stable energy supply for a variety of applications.
[0038] Example 2
[0039] The working principle of this invention is based on the energy conversion mechanism achieved by utilizing the relative swaying motion of two objects in the ocean. Specifically, this invention relates to the use of two articulated floating bodies in the ocean to move relative to each other around an axis at the articulation point under the action of waves, thereby achieving energy conversion and power generation. In this design, the main shaft is mounted on the first floating body, while the forward driven gear shaft and permanent magnet generator are fixedly mounted on the second floating body. In this way, the action of waves causes the first and second floating bodies to produce relative angular displacement, thereby driving the mechanical wave energy conversion system to generate electricity.
[0040] Under the influence of waves, the first and second floats pitch and rotate relative to the hinge. Viewed from the front, when the first float rotates clockwise relative to the hinge and the second float rotates counter-clockwise, the hinge is in an arched position. Since the main shaft and the front and rear pawls are fixed to the first float, when the first float rotates clockwise, the main shaft and the front pawl also rotate clockwise. In this situation, the front pawl will slide across the back of the ratchet teeth of the front ratchet, preventing the ratchet from being driven, and the front drive gear connected to the front ratchet will not rotate. Simultaneously, the front first driven gear and the front second driven gear, which mesh with the front drive gear, are also not driven.
[0041] Continuing the observation from the front view, when the main shaft rotates clockwise, the rear pawl, which is fixed to it, also rotates clockwise in sync. However, from the rear view, the rear pawl actually rotates counterclockwise. When the rear pawl rotates counterclockwise, it drives the rear ratchet to rotate counterclockwise. The rear drive gear, which is fixed to the rear ratchet, also rotates counterclockwise in sync. The rear driven gear, meshing with the rear drive gear, will therefore rotate clockwise. Since the rear driven gear is connected to the rear shaft of the permanent magnet generator via a key, the rear shaft of the permanent magnet generator will rotate synchronously with the rear driven gear, thus generating electricity. Looking from the top view, the rear shaft of the generator can be seen rotating to the left.
[0042] Under the influence of waves, the first and second floats pitch and rotate relative to the hinge. Viewed from the front, when the first float rotates counter-clockwise relative to the hinge and the second float rotates clockwise, the hinge is in a drooping position. Since the main shaft and front and rear pawls are fixed to the first float, when the first float rotates counter-clockwise, the main shaft and front pawl also rotate counter-clockwise. In this situation, the front pawl drives the front ratchet to rotate counter-clockwise. The front drive gear, fixed to the front ratchet, also rotates counter-clockwise synchronously. The first driven gear, meshing with the front drive gear, rotates clockwise as a result. The first driven gear also meshes with the second driven gear simultaneously, so the clockwise rotation of the first driven gear drives the second driven gear to rotate counter-clockwise. Since the second driven gear is connected to the front shaft of the permanent magnet generator via a key, the front shaft of the permanent magnet generator rotates synchronously with the second driven gear, thus generating electricity from the permanent magnet generator. Looking at it from above, you can see that the front axis of the generator is rotating to the left.
[0043] Viewed from the front, when the spindle rotates counterclockwise, the rear pawl, which is fixed to it, also rotates counterclockwise. However, viewed from the rear, the rear pawl actually rotates clockwise. In this case, the rear pawl will slide across the back of the ratchet teeth of the rear ratchet, preventing the ratchet from being driven, and the rear drive gear connected to the rear ratchet will not rotate. Simultaneously, the rear driven gear meshing with the rear drive gear will also not be driven.
[0044] Therefore, regardless of whether the articulated position under wave-driven motion is in an arched or drooping state, the permanent magnet generator rotates in the same direction. This design converts the reciprocating wave motion into the unidirectional rotational motion of the permanent magnet generator, thus effectively converting the energy of ocean waves into electrical energy.
[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A mechanical wave energy conversion system, installed between two floating bodies, characterized in that, The system includes a main shaft, a first driven gear shaft, and a second driven gear shaft. A driving gear, a first driven gear, and a second driven gear are respectively mounted on the main shaft, the first driven gear shaft, and the second driven gear shaft. A ratchet drive mechanism is also mounted on the main shaft and connected to a first float. The second driven gear shaft is mounted on a second float, and the first driven gear shaft is hinged to the second driven gear shaft via a bracket. The driving gear meshes sequentially with the first driven gear and the second driven gear. The main shaft also includes a ratchet drive mechanism.
2. The mechanical wave energy conversion system according to claim 1, characterized in that, A front pawl and a rear pawl are fixedly mounted on the main shaft, and the front pawl and the rear pawl are in opposite directions; the front pawl and the rear pawl can rotate synchronously with the shaft.
3. The mechanical wave energy conversion system according to claim 2, characterized in that, The main shaft is equipped with a front bearing and a rear bearing.
4. A mechanical wave energy conversion system according to claim 3, characterized in that, The front drive gear is mounted on the front bearing, and the front drive gear can rotate around the main shaft through the front bearing.
5. A mechanical wave energy conversion system according to claim 4, characterized in that, The rear drive gear is mounted on the rear bearing, and the rear drive gear can rotate around the main shaft through the rear bearing.
6. A mechanical wave energy conversion system according to claim 5, characterized in that, The front drive gear is fixedly and coaxially mounted with the front ratchet, and the front ratchet can rotate at the same angular velocity as the front drive gear.
7. A mechanical wave energy conversion system according to claim 6, characterized in that, The front ratchet and the front pawl mesh with each other. When the front pawl rotates clockwise, it can drive the front ratchet to rotate clockwise. When the front pawl rotates counterclockwise, the front pawl slides across the back of the ratchet teeth of the front ratchet, and the front ratchet cannot be driven.
8. A mechanical wave energy conversion system according to claim 7, characterized in that, The rear drive gear is fixedly and coaxially mounted with the rear ratchet, which can rotate at the same angular velocity as the rear drive gear.
9. A mechanical wave energy conversion system according to claim 8, characterized in that, The front driving gear meshes internally with the front first driven gear, and the diameters of the rear driving gear and the rear driven gear are designed in proportion. The rotation of the rear driving gear can drive the rotation of the rear driven gear.
10. A mechanical wave energy conversion system according to claim 9, characterized in that, The rear driving gear meshes with the rear driven gear, and their diameters are designed proportionally. Rotation of the rear driving gear drives the rear driven gear to rotate. The front second driven gear is connected to the front shaft of the permanent magnet generator via a front second driven gear key. The rear driven gear is connected to the rear shaft of the permanent magnet generator via a rear driven gear key. The permanent magnet generator is mounted on another floating body.