Wave energy power generation device fixed on offshore wind turbine single pile foundation

Abstract

The invention discloses a wave energy power generation device fixed on a single pile foundation of an offshore wind turbine, and belongs to the technical field of wave energy power generation. Comprising a generator fixing support fixed to a steel pipe pile, the generator fixing support is provided with a buoyancy tank, and a plurality of sliding rails are arranged at the joint of the generator fixing support and the steel pipe pile so that the generator fixing support can move up and down along the sliding rails; the generator fixing support is provided with a plurality of generator sets. Compared with the prior art, the method has the advantages that the kinetic energy of the waves is converted into the electric energy by utilizing the horizontal transmission force of the waves, so that the effective utilization of the wave energy is realized. The device can stably operate under different sea conditions, can continuously output electric energy, provides stable clean energy for an offshore wind power plant, effectively overcomes the defects of traditional wind power, and improves the energy output stability and economical efficiency of the whole wind power plant.

Description

Technical Field

[0001] The present invention belongs to the technical field of wave energy power generation, and in particular relates to a wave energy power generation device fixed on a single pile foundation of an offshore wind turbine. Background Art

[0002] The ocean is rich in renewable energy resources, primarily in the form of wind, wave, and tidal energy, with a theoretical total capacity of up to 2.1×10⁶ TWh. Wave energy, with the highest energy density among marine renewable energy sources, has attracted widespread attention due to its concentrated energy distribution, high theoretical energy capture efficiency, and long-term effective production capacity.

[0003] Wave energy generation is achieved by capturing the kinetic and potential energy of waves on the ocean surface. Existing wave energy capture devices include point absorption, oscillating water column, and overtopping types. These devices usually generate oscillations, swings, or rotational movements of the energy-capturing components under the action of the ups and downs of the waves, and then generate electricity through the generator. The efficiency of wave energy capture is greatly affected by changes in sea conditions and has a certain degree of volatility. Ocean current power generation is similar to the principles of wind power generation and hydropower generation, which uses flowing seawater to drive turbines to generate electricity. Existing ocean current power generation devices mainly include horizontal axis and vertical axis types. At present, ocean current power generation still has a series of key technical problems, such as difficult installation and maintenance, high corrosion protection requirements, and significant impact from loads and safety performance in the marine environment. In addition, the energy utilization rate of low-speed water flow, which accounts for the largest proportion and has the widest frequency range in the ocean current energy spectrum, is low. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a wave energy power generation device fixed on a single pile foundation of an offshore wind turbine, including a generator fixing bracket fixed on a steel pipe pile, the generator fixing bracket is provided with a buoyancy box, and a plurality of slide rails are provided at the connection between the generator fixing bracket and the steel pipe pile so that the generator fixing bracket can move up and down along the slide rails; the generator fixing bracket is provided with a plurality of generator sets.

[0005] Preferably, the generator set includes a generator platform plate fixed to the generator fixing bracket, a generator gear tray fixing bracket is fixedly connected to the surface of the generator platform plate, and a generator gear tray connecting shaft is sleeved on the end of the generator gear tray fixing bracket away from the generator platform plate, and the generator gear tray connecting shaft is rotatably connected to the generator gear tray.

[0006] Preferably, the generator gear tray is provided with an outer ring rotating gear and an inner ring rotating gear, the outer ring rotating gear is meshed with the outer ring rotating connecting gear, the inner ring rotating gear is meshed with the inner ring rotating connecting gear, the outer ring rotating gear and the inner ring rotating gear are fixed in position by the outer ring rotating connecting gear connecting shaft and the inner ring rotating connecting gear connecting shaft respectively, the outer ring rotating connecting gear connecting shaft and the inner ring rotating connecting gear connecting shaft are sleeved on the gear fixing bracket, and the connecting gear fixing bracket is fixedly connected to the generator platform plate.

[0007] Preferably, the outer ring rotating gear and the generator gear tray are connected by the outer ring rotating gear ball, and an outer ring pin is provided at the connection between the two. An outer ring pin spring is installed between the outer ring pin and the generator gear tray, and the outer ring pin spring rotates around the outer ring pin rotating axis.

[0008] Preferably, the inner ring rotating gear and the generator gear tray are connected by the inner ring rotating gear ball, and an inner ring pin is provided at the connection between the two. An inner ring pin spring is installed between the inner ring pin and the generator gear tray, and the inner ring pin spring rotates around the inner ring pin rotating axis; the outer ring pin and the inner ring pin are arranged in opposite directions.

[0009] Preferably, the outer ring rotating connecting gear and the inner ring rotating connecting gear are connected to the same-direction rotation conversion device through an outer ring rotating connecting gear belt and an inner ring rotating connecting gear belt respectively.

[0010] Preferably, the same-direction rotation conversion device is fixedly connected to the generator platform plate through a same-direction rotation conversion device fixing frame, a fixed gear transmission shaft is sleeved between the same-direction rotation conversion device fixing frames, a fixed gear 1 and a fixed gear 2 are respectively provided at both ends of the fixed gear transmission shaft, a rotating gear transmission shaft is sleeved on the surface of the fixed gear transmission shaft, a rotating gear 1 and a rotating gear 2 are connected at both ends of the rotating gear transmission shaft, the fixed gear 1 is meshed with the rotating gear 1, and the rotating gear 2 is meshed with the fixed gear 2.

[0011] Preferably, the contact surface between the fixed gear transmission shaft and the rotating gear transmission shaft is provided with a fixed gear slot, the rotating gear transmission shaft is provided with a rotating gear slot, the fixed gear slot is provided with ball 1 and ball 2 at both ends near the fixed gear 1 and the fixed gear 2, ball 3 is provided on the inside of the fixed gear 2, electromagnet 1 and electromagnet 2 are respectively provided on the inside of the rotating gear 1 and the rotating gear 2, and electromagnets are provided at both ends of the fixed gear transmission shaft.

[0012] Preferably, the outer ring rotating connecting gear is connected to the rotating gear 2 through the outer ring rotating connecting gear belt, the inner ring rotating connecting gear is connected to the rotating gear 1 through the inner ring rotating connecting gear belt, the rotating gear transmission shaft is connected to the generator through the generator connecting belt arranged on the surface, and the generator is fixed to the surface of the generator platform plate through a generator fixing bracket.

[0013] Preferably, the generator gear tray is rotatably connected to a wave transmission connecting rod, and a wave conversion device fixing bracket is provided on the same side and in the same direction of the generator platform plate and the generator gear tray, the wave transmission connecting rod and the end of the wave conversion device fixing bracket are rotatably connected to a wave conversion device, and the bottom end of the wave conversion device is connected to a wave baffle, and the setting direction of the wave conversion device and the setting direction of the wave baffle are perpendicular to each other.

[0014] Preferably, when the wave conversion device drives the wave transmission connecting rod to transmit, the motor gear tray must complete a circular motion.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This solution utilizes the remaining resources of offshore wind turbine monopile foundations by installing eight wave energy generators in a circle around them. The wave energy generators utilize the horizontal force of waves to convert their kinetic energy into electricity, effectively harnessing wave energy for energy. Furthermore, by reducing wave propagation, the wave energy generators provide some protection for the offshore wind turbine monopile foundations. Construction and installation are completed onshore and transported along with the structure to sea. This maximizes resource utilization, increases efficiency, and offers excellent economic and practical benefits.

[0016] 2. From the perspective of energy conversion, this wave energy power generation device effectively utilizes wave energy by harnessing the horizontal propagation of waves to convert their kinetic energy into electrical energy. Waves constantly move in the ocean, and the device's ingenious design converts the enormous energy they contain into usable electricity, providing an additional energy source for offshore wind farms. This not only enriches the energy structure of offshore wind farms but also provides an effective way to address the intermittent and unstable nature of traditional wind power. The device can operate stably in various sea conditions, continuously outputting electricity and providing a stable, clean energy source for offshore wind farms. This effectively supplements the shortcomings of traditional wind power and improves the energy output stability and economic efficiency of the entire wind farm.

[0017] 3. These wave energy power generation devices in this solution not only absorb and convert wave energy, but also effectively reduce the propagation force of waves. During the propagation process, waves will cause certain impacts and erosion on the offshore wind power monopile foundation. In the long run, this will not only affect the stability and safety of the infrastructure, but also shorten its service life. However, the present invention forms a protective barrier by installing wave energy power generation devices around the monopile foundation, which can significantly reduce the impact of waves on the foundation, thereby playing a certain protective role for the offshore wind power monopile foundation, extending its service life, and providing reliable protection for the long-term stable operation of offshore wind farms. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the wave energy power generation device of the present invention Figure 1 ; Figure 2 Schematic diagram of the wave energy power generation device of the present invention Figure 2 ; Figure 3 Schematic diagram of the wave energy power generation device of the present invention Figure 3 ; Figure 4 Schematic diagram of the generator set of the wave energy power generation device of the present invention Figure 1 ; Figure 5 Schematic diagram of the generator set of the wave energy power generation device of the present invention Figure 2 ; Figure 6 Schematic diagram of the generator set of the wave energy power generation device of the present invention Figure 3 ; Figure 7 This is a schematic structural diagram of the same-direction rotation conversion device of the wave energy power generation device of the present invention; Figure 8 This is a schematic diagram of the connection between the outer ring rotating gear and the generator gear tray of the wave energy power generation device of the present invention; Figure 9 This is a schematic diagram of the connection between the inner ring rotating gear and the generator gear tray of the wave energy power generation device of the present invention.

[0019] In the figure: 1—steel pipe pile; 2—generator housing; 3—generator fixing bracket; 3.1—buoyancy box; 3.2—slide rail; 4—generator set; 4.1—generator gear tray; 4.2—outer ring rotating gear; 4.3—inner ring rotating gear; 4.4—outer ring rotating connecting gear; 4.5—outer ring rotating connecting gear connecting shaft; 4.6—inner ring rotating connecting gear; 4.7—inner ring rotating connecting gear connecting shaft; 4.8—outer ring rotating connecting gear belt; 4.9—inner ring rotating connecting gear belt; 4.10—connecting gear fixing bracket; 4.11—wave conversion device; 4.12—wave transmission connecting rod; 4.13—wave conversion device fixing bracket; 4.14—wave baffle; 4.15—generator connecting belt; 4.16—generator; 4.17—generator fixing bracket; 418—generator gear tray Connecting shaft; 4.19—generator gear tray fixing bracket; 4.20—generator platform plate; 5—co-directional rotation conversion device; 5.1—fixed gear one; 5.2—rotating gear one; 5.3—rotating gear two; 5.4—fixed gear two; 5.5—fixed gear transmission shaft; 5.6—co-directional rotation conversion device fixing bracket; 5.7—ball one; 5.8—ball two; 5.9—ball three; 5.10—fixed gear slide; 5.11—rotating gear slide; 5.12—rotating gear transmission shaft; 5.13—electromagnet one; 5.14—electromagnet two; 6.1—outer ring bayonet; 6.2—outer ring bayonet spring; 6.3—outer ring bayonet rotating shaft; 6.4—outer ring rotating gear ball; 7.1—inner ring bayonet; 7.2—inner ring bayonet spring; 7.3—inner ring bayonet rotating shaft; 7.4—inner ring rotating gear ball. DETAILED DESCRIPTION

[0020] Example 1: Figure 1 - Figure 9 As shown, a wave energy power generation device fixed on a single pile foundation of an offshore wind turbine includes a generator fixing bracket 3 fixed to a steel pipe pile 1, wherein the generator fixing bracket 3 is provided with a buoyancy box 3.1, and a plurality of slide rails 3.2 are provided at the connection between the generator fixing bracket 3 and the steel pipe pile 1 so that the generator fixing bracket 3 can move up and down along the slide rails 3.2; the generator fixing bracket 3 is provided with a plurality of generator sets 4.

[0021] The wave energy generator is bolted to the steel pipe pile 1 via a generator bracket 3. The generator bracket 3 is a monolithic structure. The wave energy generator is then individually mounted on the generator bracket 3, forming a single unit for offshore installation. A buoyancy 3.1 is mounted on the generator bracket 3. The buoyancy of the buoyancy 3.1 keeps the motor bracket 3 and the entire power generation system afloat. Slide rails 3.2 are installed on the steel pipe pile 1. The motor bracket 3 and the entire power generation system can move up and down along the slide rails 3.2 as the water level changes, allowing power generation to occur regardless of high or low tide.

[0022] The generator set 4 includes a generator platform plate 4.20 fixed to the generator fixing bracket 3, and a generator gear tray fixing frame 4.19 is fixedly connected to the surface of the generator platform plate 4.20. The end of the generator gear tray fixing frame 4.19 away from the generator platform plate 4.20 is sleeved with a generator gear tray connecting shaft 4.18, and the generator gear tray connecting shaft 4.18 is rotatably connected to the generator gear tray 4.1. Generator gear tray 4.1 is equipped with an outer ring rotating gear 4.2 and an inner ring rotating gear 4.3. Outer ring rotating gear 4.2 meshes with outer ring rotating connecting gear 4.4, while inner ring rotating gear 4.3 meshes with inner ring rotating connecting gear 4.6. Outer ring rotating gear 4.2 and inner ring rotating gear 4.3 are respectively fixed in position by outer ring rotating connecting gear connecting shaft 4.5 and inner ring rotating connecting gear connecting shaft 4.7. Outer ring rotating connecting gear connecting shaft 4.5 and inner ring rotating connecting gear connecting shaft 4.7 are respectively sleeved on gear fixing bracket 4.10, which is fixedly connected to generator platform plate 4.20. Outer ring rotating connecting gear 4.4 and inner ring rotating connecting gear 4.6 are respectively connected to the same-direction rotation conversion device 5 via outer ring rotating connecting gear belt 4.8 and inner ring rotating connecting gear belt 4.9.

[0023] The outer ring rotating connecting gear 4.4 is connected to the rotating gear 2 5.3 via the outer ring rotating connecting gear belt 4.8. The inner ring rotating connecting gear 4.6 is connected to the rotating gear 1 5.2 via the inner ring rotating connecting gear belt 4.9. The rotating gear transmission shaft 5.12 is connected to the generator 4.16 via the generator connecting belt 4.15 provided on the surface. The generator 4.16 is fixed to the surface of the generator platform plate 4.20 via the generator fixing bracket 4.17.

[0024] The generator gear tray 4.1 is rotatably connected to a wave drive connecting rod 4.12. A wave conversion device fixing bracket 4.13 is provided on the same side and in the same direction as the generator platform plate 4.20 and the generator gear tray 4.1. The ends of the wave drive connecting rod 4.12 and the wave conversion device fixing bracket 4.13 are rotatably connected to the wave conversion device 4.11. The bottom end of the wave conversion device 4.11 is connected to a wave baffle 4.14. The wave conversion device 4.11 and the wave baffle 4.14 are arranged in a direction perpendicular to each other. When the wave conversion device 4.11 drives the wave drive connecting rod 4.12, the motor gear tray 4.1 completes a circular motion.

[0025] Attached to the wave converter 4.11 are arc-shaped wave baffles 4.14. Each wave baffle 4.14 has a 40° arc angle, and eight wave baffles 4.14 together form a 320° arc. This creates a 5° angle between adjacent wave baffles 4.14, allowing them to fully absorb waves propagating from all directions. When waves form on the sea surface, the horizontal force of the waves pushes the wave baffles 4.14 into horizontal motion. The wave converter 4.11, connected to the wave baffles 4.14, converts the horizontal force into vertical motion, which then drives the generator gear tray 4.1 through the wave transmission connecting rod 4.12 to initiate rotation.

[0026] While absorbing and converting wave energy, these wave energy generators in this solution also effectively reduce the propagation force of waves. During the propagation process, waves will cause certain impacts and erosion on the offshore wind turbine monopile foundation. In the long term, this will not only affect the stability and safety of the infrastructure, but also shorten its service life. However, by installing wave energy generators around the monopile foundation, the present invention forms a protective barrier that can significantly reduce the impact of waves on the foundation, thereby playing a certain protective role for the offshore wind turbine monopile foundation, extending its service life, and providing reliable protection for the long-term stable operation of offshore wind farms.

[0027] The outer ring rotating gear 4.2 and the generator gear tray 4.1 are rotationally connected through the outer ring rotating gear ball 6.4, and an outer ring pin 6.1 is provided at the connection between the two. An outer ring pin spring 6.2 is installed between the outer ring pin 6.1 and the generator gear tray 4.1, and the outer ring pin spring 6.2 rotates around the outer ring pin rotating shaft 6.3.

[0028] The inner ring rotating gear 4.3 and the generator gear tray 4.1 are rotationally connected via the inner ring rotating gear ball 7.4, and an inner ring bayonet 7.1 is provided at the connection between the two. An inner ring bayonet spring 7.2 is installed between the inner ring bayonet 7.1 and the generator gear tray 4.1, and the inner ring bayonet spring 7.2 rotates around the inner ring bayonet rotating shaft 7.3; the outer ring bayonet 6.1 and the inner ring bayonet 7.1 are arranged in opposite directions.

[0029] The same-direction rotation conversion device 5 is fixedly connected to the generator platform plate 4.20 via a same-direction rotation conversion device fixing frame 5.6. A fixed gear transmission shaft 5.5 is sleeved between the same-direction rotation conversion device fixing frame 5.6. A fixed gear 1 5.1 and a fixed gear 2 5.4 are respectively provided at both ends of the fixed gear transmission shaft 5.5. A rotating gear transmission shaft 5.12 is sleeved on the surface of the fixed gear transmission shaft 5.5. A rotating gear 1 5.2 and a rotating gear 2 5.3 are connected at both ends of the rotating gear transmission shaft 5.12. The fixed gear 1 5.1 and the rotating gear 1 5.2 are meshed, and the rotating gear 2 5.3 and the fixed gear 2 5.4 are meshed. The contact surface between the fixed gear transmission shaft 5.5 and the rotating gear transmission shaft 5.12 is provided with a fixed gear chute 5.10, and the rotating gear transmission shaft 5.12 is provided with a rotating gear chute 5.11. Ball 1 5.7 and ball 2 5.8 are provided at both ends of the fixed gear chute 5.10 near the fixed gear 1 5.1 and the fixed gear 2 5.4. Ball 3 5.9 is provided on the inner side of the fixed gear 2 5.4. Electromagnet 1 5.13 and electromagnet 2 5.14 are provided on the inner sides of the rotating gear 1 5.2 and the rotating gear 2 5.3 respectively. Electromagnets are provided at both ends of the fixed gear transmission shaft 5.5.

[0030] The outer ring rotating connecting gear 4.4 is connected to the rotating gear 2 5.3 via the outer ring rotating connecting gear belt 4.8. The inner ring rotating connecting gear 4.6 is connected to the rotating gear 1 5.2 via the inner ring rotating connecting gear belt 4.9. The rotating gear transmission shaft 5.12 is connected to the generator 4.16 via the generator connecting belt 4.15 provided on the surface. The generator 4.16 is fixed to the surface of the generator platform plate 4.20 via the generator fixing bracket 4.17.

[0031] Example 2: When waves act on the wave baffle 4.14, the wave baffle 4.14 can drive the wave conversion device 4.11 to rotate along the end of the wave conversion device fixing bracket 4.13, thereby driving the wave transmission connecting rod 4.12 and the generator gear tray 4.1 to move. When the generator gear tray 4.1 starts to rotate, it will drive the outer ring rotating gear 4.2 and the inner ring rotating gear 4.3 fixed on the generator gear tray 4.1 to rotate. If the generator gear tray 4.1 rotates clockwise, since the inner ring bayonet 7.1 and the outer ring bayonet 6.1 are arranged in opposite directions, only one of the outer ring rotating gear 4.2 and the inner ring rotating gear 4.3 can rotate relative to the generator gear tray 4.1. Figure 8 and Figure 9The figure shows one of the situations. For example, the generator gear tray 4.1 rotates clockwise, the outer ring bayonet 6.1 engages with the outer ring rotating gear 4.2, and the generator gear tray 4.1 and the outer ring rotating gear 4.2 rotate synchronously, while the inner ring bayonet 7.1 set between the generator gear tray 4.1 and the inner ring rotating gear 4.3 slides along the matching groove of the inner ring rotating gear 4.3 and cannot drive the inner ring rotating gear 4.3 to rotate. The same applies to other situations where the inner ring bayonet 7.1 and the outer ring bayonet 6.1 are in opposite directions; the outer ring rotating gear 4.2 rotates clockwise. At the same time, it drives the outer ring rotating connecting gear 4.4, which is meshed with the outer ring rotating gear 4.2, to rotate counterclockwise. Conversely, if the generator gear tray 4.1 rotates counterclockwise, the inner ring latch 7.1 engages the inner ring rotating gear 4.3, causing it to rotate counterclockwise. At the same time, the outer ring latch 6.1, set between the generator gear tray 4.1 and the outer ring rotating gear 4.2, slides along the matching groove of the outer ring rotating gear 4.2, and is unable to rotate the outer ring rotating gear 4.2. At this time, it drives the inner ring rotating connecting gear 4.6, which is meshed with the inner ring rotating gear 4.3, to rotate counterclockwise. Therefore, regardless of whether the generator gear tray 4.1 rotates clockwise or counterclockwise, the outer ring rotating connecting gear 4.4 and the inner ring rotating connecting gear 4.6 will only rotate in the same direction.

[0032] The outer ring rotating connecting gear 4.4 is connected to the rotating gear 2 5.3 through the outer ring rotating connecting gear belt 4.8, and the inner ring rotating connecting gear 4.6 is connected to the rotating gear 1 5.2 through the inner ring rotating connecting gear belt 4.9. Of course, the rotating gears connected by the two can also be swapped. Of course, it is best to specifically introduce this situation; in the aforementioned, the outer ring rotating connecting gear 4.4 and the inner ring rotating connecting gear 4.6 will choose to rotate in the same direction. When the generator gear tray 4.1 rotates, the installed controller controls the electromagnet and electromagnet 1 5.13 and electromagnet 2 5.14. Electromagnet 1 5.13 and electromagnet 2 5.14 are respectively arranged on the inner sides of rotating gear 1 5.2 and rotating gear 2 5.3. The electromagnet can The two electromagnets are located at both ends of the fixed gear transmission shaft 5.5. When the controller senses clockwise rotation of the generator gear tray 4.1, it energizes electromagnet 2 5.14 and the electromagnet near rotating gear 2 5.3. The two attract each other, causing rotating gear 2 5.3 to mesh with fixed gear 2 5.4. The electromagnets between the other two groups are de-energized, disengaging them. Similarly, fixed gear 1 5.1 and rotating gear 1 5.2 can be meshed. At this time, rotating gear 2 5.3 rotates along with the outer ring rotating connecting gear 4.4. The rotating gear transmission shaft 5.12 connected to rotating gear 2 5.3 is connected to the generator 4.16 via the generator connecting belt 4.15 installed on its surface, ultimately driving the generator 4.16 to rotate and generate electricity. The power generation principle of the generator gear tray 4.1's counterclockwise rotation is similar to that of the clockwise rotation, so I will not elaborate on it here.

[0033] From the perspective of energy conversion, this wave power generation device effectively utilizes wave energy by harnessing the horizontal propagation of waves to convert their kinetic energy into electrical energy. Waves constantly move in the ocean, and the device's ingenious design converts the enormous energy they contain into usable electricity, providing an additional energy source for offshore wind farms. This not only enriches the energy mix of offshore wind farms but also offers an effective solution for addressing the intermittent and unstable nature of traditional wind power. The device can operate stably in varying sea conditions, continuously outputting electricity and providing a stable source of clean energy for offshore wind farms. This effectively complements the shortcomings of traditional wind power and improves the energy output stability and economic efficiency of the entire wind farm.

Claims

1. A wave energy power generation device fixed on a monopile foundation of an offshore wind turbine, characterized by: The invention comprises a generator fixing bracket (3) fixed to a steel pipe pile (1), wherein the generator fixing bracket (3) is provided with a buoyancy box (3.1), and a plurality of slide rails (3.2) are provided at the connection between the generator fixing bracket (3) and the steel pipe pile (1), so that the generator fixing bracket (3) can move up and down along the slide rails (3.2); the generator fixing bracket (3) is provided with a plurality of generator sets (4), and the generator sets (4) are provided with generator set housings (2).

2. A wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 1, characterized in that: The generator set (4) comprises a generator platform plate (4.20) fixed to the generator fixing bracket (3); a generator gear tray fixing frame (4.19) is fixedly connected to the surface of the generator platform plate (4.20); a generator gear tray connecting shaft (4.18) is sleeved on one end of the generator gear tray fixing frame (4.19) away from the generator platform plate (4.20); and the generator gear tray connecting shaft (4.18) is rotatably connected to the generator gear tray (4.1).

3. A wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 2, characterized in that: The generator gear tray (4.1) is provided with an outer ring rotating gear (4.2) and an inner ring rotating gear (4.3); the outer ring rotating gear (4.2) meshes with the outer ring rotating connecting gear (4.4); the inner ring rotating gear (4.3) meshes with the inner ring rotating connecting gear (4.6); the outer ring rotating gear (4.2) and the inner ring rotating gear (4.3) are fixed in position by an outer ring rotating connecting gear connecting shaft (4.5) and an inner ring rotating connecting gear connecting shaft (4.7), respectively; the outer ring rotating connecting gear connecting shaft (4.5) and the inner ring rotating connecting gear connecting shaft (4.7) are sleeved on a gear fixing bracket (4.10), and the connecting gear fixing bracket (4.10) is fixedly connected to the generator platform plate (4.20).

4. A wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 3, characterized in that: The outer ring rotating gear (4.2) and the generator gear tray (4.1) are rotationally connected via the outer ring rotating gear ball (6.4), and an outer ring bayonet (6.1) is provided at the connection between the two. An outer ring bayonet spring (6.2) is installed between the outer ring bayonet (6.1) and the generator gear tray (4.1), and the outer ring bayonet spring (6.2) rotates around the outer ring bayonet rotating shaft (6.3).

5. The wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 3, characterized in that: The inner ring rotating gear (4.3) and the generator gear tray (4.1) are rotationally connected via the inner ring rotating gear ball (7.4), and an inner ring bayonet (7.1) is provided at the connection between the two. An inner ring bayonet spring (7.2) is installed between the inner ring bayonet (7.1) and the generator gear tray (4.1), and the inner ring bayonet spring (7.2) rotates around the inner ring bayonet rotating shaft (7.3); the outer ring bayonet (6.1) and the inner ring bayonet (7.1) are arranged in opposite directions.

6. The wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 2, characterized in that: The outer ring rotating connecting gear (4.4) and the inner ring rotating connecting gear (4.6) are connected to the same-direction rotation conversion device (5) via an outer ring rotating connecting gear belt (4.8) and an inner ring rotating connecting gear belt (4.9), respectively.

7. A wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 6, characterized in that: The same-direction rotation conversion device (5) is fixedly connected to the generator platform plate (4.20) via a same-direction rotation conversion device fixing frame (5.6); a fixed gear transmission shaft (5.5) is sleeved between the same-direction rotation conversion device fixing frame (5.6); a fixed gear 1 (5.1) and a fixed gear 2 (5.4) are respectively provided at both ends of the fixed gear transmission shaft (5.5); a rotating gear transmission shaft (5.12) is sleeved on the surface of the fixed gear transmission shaft (5.5); a rotating gear 1 (5.2) and a rotating gear 2 (5.3) are connected at both ends of the rotating gear transmission shaft (5.12); the fixed gear 1 (5.1) and the rotating gear 1 (5.2) are meshed, and the rotating gear 2 (5.3) and the fixed gear 2 (5.4) are meshed.

8. The wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 7, characterized in that: The contact surface between the fixed gear transmission shaft (5.5) and the rotating gear transmission shaft (5.12) is provided with a fixed gear chute (5.10), the rotating gear transmission shaft (5.12) is provided with a rotating gear chute (5.11), the fixed gear chute (5.10) is provided with ball 1 (5.7) and ball 2 (5.8) at both ends close to the fixed gear 1 (5.1) and the fixed gear 2 (5.4), the inner side of the fixed gear 2 (5.4) is provided with ball 3 (5.9), the inner sides of the rotating gear 1 (5.2) and the rotating gear 2 (5.3) are respectively provided with electromagnet 1 (5.13) and electromagnet 2 (5.14), and electromagnets are provided at both ends of the fixed gear transmission shaft (5.5).

9. The wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 8, characterized in that: The outer ring rotating connecting gear (4.4) is connected to the rotating gear 2 (5.3) via the outer ring rotating connecting gear belt (4.8), the inner ring rotating connecting gear (4.6) is connected to the rotating gear 1 (5.2) via the inner ring rotating connecting gear belt (4.9), the rotating gear transmission shaft (5.12) is connected to the generator (4.16) via the generator connecting belt (4.15) provided on the surface, and the generator (4.16) is fixed to the surface of the generator platform plate (4.20) via the generator fixing bracket (4.17).

10. The wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 2, characterized in that: The generator gear tray (4.1) is rotatably connected to a wave transmission connecting rod (4.12); a wave conversion device fixing bracket (4.13) is provided on the same side and in the same direction of the generator platform plate (4.20) and the generator gear tray (4.1); the ends of the wave transmission connecting rod (4.12) and the wave conversion device fixing bracket (4.13) are rotatably connected to a wave conversion device (4.11); a wave baffle (4.14) is connected to the bottom end of the wave conversion device (4.11); and the setting direction of the wave conversion device (4.11) and the setting direction of the wave baffle (4.14) are perpendicular to each other.

11. The wave energy power generation device fixed on a monopile foundation of an offshore wind turbine according to claim 9, characterized in that: When the wave conversion device (4.11) drives the wave transmission connecting rod (4.12) to transmit, the motor gear tray (4.1) must complete a circular motion.

Images