An integrated device for converting stationary monopile wind turbines into oscillating water column wave energy.

Abstract

This invention belongs to the field of marine renewable energy development and utilization technology, and discloses an integrated device for a fixed monopile wind turbine-oscillating water column wave energy conversion device. The oscillating water column wave energy conversion device adopts a lattice structure and is placed inside the fixed monopile wind turbine foundation. The air chamber contains two symmetrical openings, with an annular moving plate sliding along an inner annular track at each opening. An air hole is located at the top of the air chamber, and a flow regulation system controls the opening degree of the air hole. An annular energy-concentrating plate sliding along a sliding ball bearing track is located outside the oscillating water column wave energy conversion device. The control system rotates the annular energy-concentrating plate to a suitable position for energy concentration; multiple measures are taken to improve the power generation efficiency of the oscillating water column wave energy conversion device. Under extreme sea conditions, the annular moving plate slides along the inner annular track until both symmetrical openings are fully open simultaneously, reducing pressure; the annular energy-concentrating plate moves upward along the rack track to a safe position, away from the sea surface; the lattice structure reduces wave load, thereby reducing the impact of waves on the device.

Description

Technical Field

[0001] This invention relates to the field of marine renewable energy development and utilization technology, specifically to an integrated device for a fixed monopile wind turbine-oscillating water column wave energy conversion device. Background Technology

[0002] In recent years, bottom-fixed offshore wind turbines (BFOWTs) have become the main equipment for wind power development in shallow and medium-water areas due to their advantages such as stable operation, durable structure, and low cost. Bottom-fixed monopile turbines, with their core advantages of simple structure, short construction period, and adaptability to most nearshore geological conditions, have become the mainstream model for nearshore wind power. However, with the continuous expansion of the nearshore wind power industry, nearshore wind farm resources are becoming increasingly scarce. Single-mode power generation can hardly continuously meet stable power generation demands and cannot efficiently utilize nearshore site resources. Therefore, to further improve the development and utilization of marine renewable energy, the core lies in researching multi-energy complementary development at sea to achieve large-scale utilization of marine energy.

[0003] To achieve complementary development of multiple energy sources at sea, wind and wave energy resources in nearshore areas share a common origin and exhibit strong temporal and spatial complementarity. Integrating wave energy converters (WECs) with fixed monopile wind turbine foundations to achieve coordinated wind-wave power generation has become a novel solution. By integrating the wave energy converter into the foundation of the fixed wind turbine, near-water space can be effectively utilized, energy output can be increased, and the cost of infrastructure sharing can be reduced. This integrated model not only allows for shared wind turbine foundations, reducing overall project construction costs, but also fully utilizes the idle near-shore space of monopile wind turbines, increasing the overall energy output of the marine area and effectively solving the industry challenges of scarce wind farm resources and insufficient benefits from single-energy development.

[0004] Among various WEC types, the Oscillating Water Column (OWC) device is widely considered the best integration choice for stationary wind turbine platforms due to its advantages such as simple and durable structure, high energy extraction efficiency, and low operation and maintenance costs. Its working principle relies on a sealed air chamber, where the rise and fall of waves drives the water column within the chamber to oscillate back and forth. This periodic compression and expansion of the air within the chamber creates a reciprocating airflow, which in turn drives the turbine generator to convert wave energy into electrical energy. Crucially, the wind energy capture target height of stationary monopile wind turbines generally exceeds 100 meters, leaving the space around the main pile in the near-shore wave action zone largely idle and wasted. Furthermore, single-power wind turbines suffer from intermittent limitations, with power generation dropping significantly during periods of weak wind and insufficient power supply stability. Therefore, integrating an OWC device into the wave zone of a monopile wind turbine enables complementary development of wind and waves.

[0005] However, current integration solutions for monopile wind turbines and OWC (Overseas Wave Capacity) units still have significant technical shortcomings. Most are simple rigid splices, lacking directional energy concentration, and their wave energy capture efficiency is greatly affected by wave direction. They also lack active risk avoidance structures, making it easy for instantaneous high pressure to form inside the gas chamber under extreme sea conditions, which in turn increases the wave load on the monopile foundation, exacerbates structural fatigue damage, and may even lead to unit failure. These solutions cannot simultaneously achieve efficient power generation and structural safety, failing to meet the practical engineering needs of nearshore wind-wave complementary development. Summary of the Invention

[0006] To address the shortcomings of existing solutions, this invention provides an integrated device for a fixed monopile wind turbine-oscillating water column wave energy conversion system. This device utilizes a lattice structure to connect the oscillating water column wave energy conversion system within the fixed monopile wind turbine. The fixed monopile wind turbine-oscillating water column wave energy conversion system comprises an air chamber with an internal annular moving plate, a flow regulation system at the upper end, and an annular energy-concentrating plate at the lower end. The annular energy-concentrating plate concentrates energy through rotation. The flow regulation system ensures that the opening ratio of the air vents meets the requirements for the turbine generator's maximum power generation efficiency. This multi-pronged approach improves the power generation efficiency of the wave energy conversion system. In extreme sea conditions, the annular energy-concentrating plate can be moved away from the sea surface; the annular moving plate can rotate to a suitable position to reduce the device pressure; and the lattice structure reduces the effect of wave loads, thus ensuring the device's survivability.

[0007] The technical solution of the present invention is as follows: An integrated device for a fixed monopile wind turbine-oscillating water column wave energy conversion device, comprising a fixed monopile wind turbine foundation and an oscillating water column wave energy conversion device; the fixed monopile wind turbine foundation comprises a lower foundation and an upper foundation; the lower foundation and the oscillating water column wave energy conversion device, and the upper foundation and the oscillating water column wave energy conversion device, are both fixedly connected by support columns to form a lattice structure; the top of the upper foundation is used to connect the wind turbine; Furthermore, the oscillating water column wave energy conversion device includes an air chamber and a control system; the side wall of the air chamber has two symmetrical openings, and the air chamber is provided with an annular inner track and two symmetrical annular moving plates, the annular moving plates are located on the annular inner track and slide along the annular inner track; the control system is located on both sides of the turbine generator. Furthermore, an air hole is provided at the top of the air chamber, a turbine generator is connected to the top of the air hole, and a flow regulation system is provided at the bottom of the air hole; Furthermore, a circular through hole is opened at the lower end of the air chamber, and an annular bottom plate is retained. The annular bottom plate is fixedly connected to the support column, and seawater enters the air chamber through the circular through hole. Under operating sea conditions, the movement of seawater in the air chamber causes the gas in the air chamber to compress or expand, thereby generating electricity for the turbine generator. Under extreme sea conditions, the symmetrical opening structure is used to balance the air pressure inside and outside the air chamber. Furthermore, an annular energy-concentrating plate is provided on the outer side of the oscillating water column wave energy conversion device, and a sliding ball track and a rack track are provided on the outer wall of the oscillating water column wave energy conversion device; the annular energy-concentrating plate moves on the sliding ball track and the rack track through a sliding system.

[0008] Furthermore, the shape of the annular moving plate matches the side wall of the air chamber, the annular moving plate is slidably connected to the inner annular track, and the moving stroke of the annular moving plate covers the entire area of ​​the symmetrical opening. A telescopic fixing device is arranged on the upper part of the annular moving plate, and the telescopic fixing device is electrically connected to the control system. Under operating sea conditions, the control system controls the telescopic fixing device to drive the annular moving plate to slide and block the symmetrical opening so that the side wall of the air chamber is completely closed, or under extreme sea conditions, the symmetrical opening is completely opened to release the air chamber pressure.

[0009] Furthermore, the flow regulation system includes an air vent, a rotatable rod, and a connecting plate; Furthermore, one end of the rotatable rod is electrically connected to the control system, and the other end of the rotatable rod is fixedly connected to the connecting plate; the control system drives the rotatable rod to adjust the degree of obstruction of the air hole by the connecting plate, so as to control the gas flow into the turbine generator and maximize the power generation efficiency of the turbine generator.

[0010] Furthermore, the annular energy-concentrating plate is slidably connected to the sliding ball track; there are two rack tracks, located on the left and right sides of the same symmetrical opening on the side wall of the air chamber, and the rack tracks extend along the axial direction of the oscillating water column wave energy conversion device.

[0011] Furthermore, the sliding system includes a telescopic retainer and a sliding module; both the telescopic retainer and the sliding module are electrically connected to the control system; the telescopic retainer is connected to the annular energy-concentrating plate for scaling adjustment; the sliding module drives the annular energy-concentrating plate to move up and down along the rack and pinion track or drives the annular energy-concentrating plate to slide along the sliding ball track.

[0012] Furthermore, the annular energy-concentrating plate is composed of two energy-concentrating plates with a central angle of 90° connected together. The first energy-concentrating plate has a sliding system on one side and a telescopic fixing device and an energy-concentrating plate groove on the other side. The second energy-concentrating plate has a sliding system on one side and an energy-concentrating plate protrusion on the other side. When the sea state is in the working sea state, the sliding system controls the two energy-concentrating plates to slide along the sliding ball track. When the groove of the energy-concentrating plate coincides with the protrusion of the energy-concentrating plate, the telescopic retainer of the first energy-concentrating plate retracts inward, so that the two energy-concentrating plates form a ring-shaped energy-concentrating plate with a central angle of 180°. When the sea state is in extreme sea state, the telescopic retainer extends outward, the groove of the energy-concentrating plate separates from the protrusion of the energy-concentrating plate, and the two energy-concentrating plates separate.

[0013] The annular energy-concentrating plate moves up and down on the rack and pinion track via a sliding module. In extreme sea conditions, when the annular energy-concentrating plate slides from the sliding ball track to the rack and pinion track, the sliding module slides the annular energy-concentrating plate to the outside of the air chamber along the rack and pinion track and moves it upward along the rack and pinion track to move away from the sea surface.

[0014] Furthermore, the support columns are located at the upper and lower ends of the oscillating water column wave energy conversion device, with the upper support column and the corresponding lower support column having their centers aligned on the same straight line, forming a lattice structure.

[0015] Furthermore, the control system includes a control terminal and a power supply module. The control system is electrically connected to the monitoring system, the sliding system, and the flow regulation system, respectively. The control terminal receives information from the monitoring system and issues commands to the connected components. The power supply module provides power support to the connected components.

[0016] Furthermore, the monitoring system includes a wind speed monitoring sensor and a laser wavefront displacement sensor, which are electrically connected to the control terminal and located on the upper foundation.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) Under operating sea conditions: This invention integrates an oscillating water column wave energy conversion device into the part of the fixed monopile wind turbine foundation subjected to sea waves, to generate wave energy and realize the complementary utilization of "wind-wave" energy in time and space; by rotating the annular energy-concentrating plate, energy is reflected and concentrated under different wave directions to improve wave energy conversion efficiency. The maximum power generation efficiency of the turbine generator is achieved by adjusting the air pore opening ratio in the air chamber through the flow regulation system.

[0018] (2) Under extreme sea conditions: The present invention adopts a lattice structure design in the part of the fixed wind turbine monopile foundation subjected to sea waves. When the annular energy-concentrating plate is retracted, most of the sea wave energy can pass through the foundation, reducing the wave load on the monopile foundation and improving the survivability and durability of the integrated device under extreme sea conditions; an annular moving plate is set up, and the closed air chamber is opened by rotating the annular moving plate, thereby reducing the pressure in the air chamber under wave conditions and ensuring the stability of the structure. Attached Figure Description

[0019] Figure 1 This is a front view of the integrated device of the fixed monopile wind turbine-oscillating water column wave energy conversion device of the present invention; Figure 2 This is a detailed drawing of the main body of the integrated device of the fixed monopile wind turbine-oscillating water column wave energy conversion device of the present invention; Figure 3 This is a detailed view of the near-sea surface portion of the integrated device of the fixed monopile wind turbine-oscillating water column wave energy conversion device of the present invention; Figure 4 This is a sectional view of the central axis of the fixed monopile wind turbine-oscillating water column wave energy conversion device of the present invention; Figure 5 This is a partial sectional view of the upper end of the central axis plane of the fixed monopile wind turbine-oscillating water column wave energy conversion device of the present invention; Figure 6 This is a partial detailed sectional view of the lower end of the central axis plane of the fixed monopile wind turbine-oscillating water column wave energy conversion device of the present invention; Figure 7 This is a three-dimensional perspective view of the integrated device of the fixed monopile wind turbine-oscillating water column wave energy conversion device of the present invention; Figure 8 This is a schematic diagram of a telescopic fastener.

[0020] The components are: 1-Fixed monopile wind turbine foundation, 2-Oscillating water column wave energy conversion device, 3-Support column, 4-Air chamber, 5-Turbine generator, 6-Energy concentrating plate, 7-Annular moving plate, 8-Annular energy concentrating plate, 9-Control system, 10-Monitoring system, 11-Upper foundation, 12-Lower foundation, 41-Air hole, 42-Symmetrical opening, 43-Annular inner track, 44-Sliding ball track, 45-Rack track, 46-Sliding system, 81-Energy concentrating plate groove, 82-Energy concentrating plate protrusion, 90-Control terminal, 91-Power supply module, 100-Wind speed monitoring sensor, 101-Laser wavefront displacement sensor, 110-Rotating rod, 111-Connecting plate, 112-Flow regulation system, 461-Telescopic fixing device, 462-Sliding module. Detailed Implementation

[0021] To further understand the content of this invention, a detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be noted that this structure is applicable to the integration of a fixed monopile wind turbine foundation with an oscillating water column wave energy conversion device, but is not limited thereto; it is also applicable to other offshore structures with rod-shaped foundations integrated with oscillating water column wave energy conversion devices. It is understood that the specific embodiments described herein are merely for explaining the relevant invention and not for limiting the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. The terms "first," "second," etc., used in this invention are for the convenience of describing the technical solutions of this invention and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solutions of this invention. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this invention.

[0022] Example 1 Referring to the accompanying drawings, this embodiment proposes an integrated device for a fixed monopile wind turbine-oscillating water column wave energy conversion device, including a fixed monopile wind turbine foundation 1 and an oscillating water column wave energy conversion device 2. The fixed monopile wind turbine foundation 1 includes a lower foundation 12 and an upper foundation 11. The lower foundation 12 and the oscillating water column wave energy conversion device 2, and the upper foundation 11 and the oscillating water column wave energy conversion device 2, are fixedly connected by support columns 3, forming a lattice structure. The upper foundation 11 is used to connect the wind turbine. The oscillating water column wave energy conversion device 2 includes an air chamber 4. The side wall of the air chamber 4 has two symmetrical openings 42. The air chamber 4 is equipped with an annular inner track 43 and an annular moving plate 7. A telescopic fixing device 461 is arranged on the upper part of the annular moving plate 7. An air hole 41 is opened at the top of the air chamber 4. A turbine generator 5 is connected to the top of the air hole 41. A flow regulation system 112 is arranged at the bottom of the air hole 41. A control system 9 is arranged next to the turbine generator 5. A circular through hole is opened at the lower end of the air chamber 4, and an annular bottom plate is retained. The annular bottom plate is fixedly connected to the support column 3. Seawater enters the interior of the air chamber 4 through the circular through hole. Under working sea conditions, the movement of seawater in the air chamber 4 causes the gas in the air chamber 4 to also undergo compression or expansion, which enables the turbine generator 5 to generate electricity. Under extreme sea conditions, the symmetrical opening 42 structure can also balance the air pressure inside and outside the air chamber 4. An annular energy-concentrating plate 8 is provided on the outer side of the oscillating water column wave energy conversion device 2. A sliding ball bearing track 44 and a rack and pinion track 45 are provided on the outer wall of the oscillating water column wave energy conversion device 2. The annular energy-concentrating plate 8 consists of two energy-concentrating plates 6. The first energy-concentrating plate has an energy-concentrating plate groove 81 on one circumferential end face and a telescopic fixing device 461 at the top of the circumferential end face. Half of the telescopic fixing device 461 is located at the top, and the other half is suspended. The purpose of the suspension is to ensure that when the energy-concentrating plates 6 are combined, the suspended part can be at the top of the second energy-concentrating plate and fixed together on the sliding ball bearing track 44. A sliding system 46 is provided at the top of the other circumferential end face. The second energy-concentrating plate has an energy-concentrating plate protrusion 82 on one circumferential end face and a sliding system at the top of the other circumferential end face. A slider is provided on the outermost side of the telescopic fixing device 461, with an embedded electric push rod. The electric push rod connects to the slider, and the slider part of the telescopic fixing device 461 is extended and retracted by the electric push rod. The fixed end is electrically connected to the control system 9. When the protrusion 82 of the energy-concentrating plate is inserted into the groove 81 of the energy-concentrating plate, the telescopic retainer 461 retracts the slider and presses and locks the energy-concentrating plate 6, so that the two energy-concentrating plates 6 are merged and fixed; when the telescopic retainer 461 extends, the lock is released, so that the two energy-concentrating plates 6 are separated; the sliding system 46 consists of the telescopic retainer 461 and the sliding module 462. The sliding module 462 is fixed on the upper end of the energy-concentrating plate 6, electrically connected to the control system 9, and slidably engaged with the sliding ball track 44; when the energy-concentrating plate 6 moves along the sliding ball track 44 to the corresponding position of the rack track 45, the sliding module 462 engages and slides with the rack track 45, thereby driving the energy-concentrating plate 6 to move up and down along the rack track 45.When the energy-concentrating plate 6 moves to the appropriate position, the sliding module stops sliding under the control of the control system.

[0023] The integrated device for a fixed monopile wind turbine-oscillating water column wave energy conversion device according to this embodiment mainly includes two parts: a fixed monopile wind turbine foundation 1 and an oscillating water column wave energy conversion device 2. The fixed monopile wind turbine foundation 1 is connected to the wind turbine at its upper end, and the oscillating water column wave energy conversion device 2 is located inside the monopile wind turbine foundation. Furthermore, this integrated device generally also includes a power transmission system for collecting, storing, or transmitting the electricity generated by the wind turbine components and the oscillating water column wave energy conversion device 2. In addition, in this embodiment, the device also includes a power supply module 91, which is electrically connected to a control terminal 90 to supply power to the oscillating water column wave energy conversion device 2, etc.

[0024] The main principle of the oscillating water column wave energy conversion device 2 in this embodiment is that the water column in the air chamber 4 oscillates up and down under the action of waves, which compresses or expands the air in the air chamber 4, thereby generating airflow at the air hole 41 at the top of the air chamber 4. The airflow drives the turbine generator 5 connected to the air hole 41 to work, completing the conversion of wave energy into electrical energy.

[0025] In a preferred embodiment, the flow regulation system 112 is located at the top of the air chamber 4, directly below the turbine generator 5. It includes an air orifice 41, a rotatable rod 110, and a connecting plate 111. The rotatable rod 110 is located beside the air orifice 41 and is L-shaped. Rotation of its vertical rod causes its horizontal rod to move circumferentially. One end of the vertical rod is electrically connected to the control system 9, and one end of the horizontal rod is fixedly connected to the connecting plate 111. The connecting plate 111 is located at the bottom of the air orifice 41, and its area is greater than or equal to the opening area of ​​the air orifice 41. The control system 9 can drive the rotatable rod 110 to rotate, thereby moving the connecting plate 111 within the projection range of the air orifice 41 to adjust the degree of obstruction of the air orifice 41 by the connecting plate 111.

[0026] Based on this implementation, the working principle of the flow regulation system 112 is as follows: the control system 9 controls the rotatable rod 110 to swing, causing the connecting plate 111 to change position relative to the air hole 41. When the connecting plate 111 is close to the air hole 41 directly below it, the effective opening area of ​​the air hole 41 decreases; when the connecting plate 111 is away from the air hole 41 directly below it, the effective opening area of ​​the air hole 41 increases. It can be understood that the different degrees of obstruction of the air hole 41 by the connecting plate 111 can further adjust the intake air flow into the turbine generator 5, thereby adjusting the power generation of the turbine generator 5.

[0027] In addition, a sliding ball track 44 and a rack track 45 are fixedly installed around the fixed monopile wind turbine foundation 1 and the oscillating water column wave energy conversion device 2. The annular energy-concentrating plate 8 is located on the sliding ball track 44, with its concave surface facing the oscillating water column wave energy conversion device 2. A sliding system 46 is provided at the upper end of the annular energy-concentrating plate 8. The sliding system 46 includes a telescopic fixing device 461 and a sliding module 462, both electrically connected to the control system 9. The annular energy-concentrating plate 8 moves in a circular motion along the sliding ball track 44. When it moves to the required fixed position, the telescopic fixing device 461 extends and locks the annular energy-concentrating plate 8, stopping its movement. When the annular energy-concentrating plate 8 moves to the position corresponding to the rack track 45, the sliding module 462 cooperates with the rack track 45, causing the annular energy-concentrating plate 8 to reciprocate up and down along the rack track 45.

[0028] Therefore, through the design of the sliding ball track 44, rack track 45, annular energy-concentrating plate 8, and sliding system, under operating sea conditions, the grooves and protrusions of the two energy-concentrating plates 6 overlap, and the telescopic retainer 461 fixes the two energy-concentrating plates 6 to form an annular energy-concentrating plate 8. According to the direction of the incident wave, the position of the annular energy-concentrating plate 8 is rotated by the sliding ball track 44, so that the wave is incident on the annular energy-concentrating plate 8 in the forward direction. The annular energy-concentrating plate 8 can then reflect the wave towards the oscillating water column wave energy conversion device 2, thereby achieving excellent energy concentration effect. Under extreme sea conditions, the telescopic retainer 461 is released, the two energy-concentrating plates 6 separate, and are rotated to a suitable position by the sliding ball track 44, connecting the energy-concentrating plate 6 to the rack track 45. Then, the sliding system moves it upward along the rack track 45 to a position away from the sea surface, thereby ensuring the safety of the structure.

[0029] An annular inner track 43 is provided on the inner wall of the oscillating water column wave energy conversion device 2. An annular moving plate 7 is located on the annular inner track 43. A telescopic fixing device 461 is provided on the upper part of the annular moving plate 7. The telescopic fixing device 461 is electrically connected to the control system 9 and can move in a circle along the annular inner track 43.

[0030] The design of the annular inner track 43 and the annular movable plate 7 allows the annular movable plate 7 to rotate via the annular inner track 43 under operating sea conditions. When the two symmetrical openings 42 on the side wall of the oscillating water column wave energy conversion device 2 are simultaneously fully closed, the telescopic fixing device 461 fixes the annular movable plate 7 in place, forming an air chamber 4 with a bottom opening, enabling the oscillating water column wave energy conversion device 2 to operate normally. Under extreme sea conditions, the annular movable plate 7 rotates via the annular inner track 43 until the two symmetrical openings 42 on the side wall of the oscillating water column wave energy conversion device 2 are simultaneously fully opened. The telescopic fixing device 461 then fixes the annular movable plate 7 in place, reducing the pressure inside the air chamber 4 and ensuring the stability and safety of the structure.

[0031] Preferably, this embodiment also includes a wind speed monitoring sensor 100 and a laser wavefront displacement sensor 101, which are electrically connected to the control system 9 and located on the upper base.

[0032] Therefore, the laser wavefront displacement sensor 101 and the wind speed monitoring sensor 100 can measure the actual wavefront conditions and the current wind speed. The control system 9 can then perform calculations based on the obtained data to estimate the current wave conditions and predict the wave conditions in the next few minutes, so as to make preparations in advance. The control terminal 90 and the power supply module 91 can then adjust the movement and rotation of the annular energy-concentrating plate 8, the rotation of the annular moving plate 7, and the operation of the flow regulation system 112 according to the wave conditions.

[0033] Understandably, in this integrated device of a fixed monopile wind turbine-oscillating water column wave energy conversion device, the rotation and fixation of the telescopic fixing device 461, the movement of the sliding module 462, and the operation of the flow regulation system 112 are all controlled by the control terminal 90 and the power supply module 91. While the oscillating water column wave energy conversion device 2 is working, the wind turbine also generates electricity under the action of wind, allowing the entire integrated device to generate electricity simultaneously without interfering with each other.

[0034] Meanwhile, the flow regulation system 112 adjusts the opening and closing of the vents 41 to achieve the optimal opening ratio required by the turbine generator 5, thereby improving the conversion efficiency. Furthermore, the rotation of the annular energy-concentrating plate 8 enhances the wave energy concentration effect. Combined with the wind turbine and utilizing multiple stages for power generation, this achieves at least three methods to improve the conversion efficiency of the oscillating water column wave energy conversion device 2. The rotation of the annular moving plate 7 reduces pressure; the movement of the annular energy-concentrating plate 8 moves the structure away from the sea surface, achieving at least two methods to ensure the safety of the device.

[0035] For any of the above-mentioned parts involving electrical signal control, corrosion prevention, or other stringent requirements, strict sealing methods must be employed to protect the safety and durability of the overall integrated device.

[0036] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An integrated device for a fixed monopile wind turbine-oscillating water column wave energy conversion device, characterized in that, It includes a fixed monopile wind turbine foundation (1) and an oscillating water column wave energy conversion device (2); the fixed monopile wind turbine foundation (1) includes a lower foundation (12) and an upper foundation (11); the lower foundation (12) and the oscillating water column wave energy conversion device (2), and the upper foundation (11) and the oscillating water column wave energy conversion device (2) are fixedly connected by support columns (3) to form a lattice structure; the top of the upper foundation (11) is used to connect the wind turbine; The oscillating water column wave energy conversion device (2) includes an air chamber (4) and a control system (9); the side wall of the air chamber (4) has two symmetrical openings (42), and the air chamber (4) is provided with an annular inner track (43) and two symmetrical annular moving plates (7). The annular moving plates (7) are located on the annular inner track (43) and slide along the annular inner track (43); the control system (9) is located on both sides of the turbine generator (5); The top of the air chamber (4) is provided with an air hole (41), the top of the air hole (41) is connected to a turbine generator (5), and the bottom of the air hole (41) is provided with a flow regulation system (112). The lower end of the air chamber (4) has a circular through hole and retains an annular bottom plate. The annular bottom plate is fixedly connected to the support column (3). Seawater enters the air chamber (4) through the circular through hole. Under working sea conditions, the movement of seawater in the air chamber (4) causes the gas in the air chamber (4) to compress or expand, which causes the turbine generator (5) to generate electricity. Under extreme sea conditions, the symmetrical opening (42) structure is used to balance the air pressure inside and outside the air chamber (4). An annular energy-concentrating plate (8) is provided on the outer side of the oscillating water column wave energy conversion device (2), and a sliding ball track (44) and a rack track (45) are provided on the outer wall of the oscillating water column wave energy conversion device (2); the annular energy-concentrating plate (8) moves on the sliding ball track (44) and the rack track (45) through a sliding system (46).

2. The integrated device for the fixed monopile wind turbine-oscillating water column wave energy conversion device according to claim 1, characterized in that, The shape of the annular moving plate (7) matches the side wall of the air chamber (4). The annular moving plate (7) is slidably connected to the annular inner track (43), and the moving stroke of the annular moving plate (7) covers the entire area of ​​the symmetrical opening (42). A telescopic fixing device (461) is installed on the upper part of the annular moving plate (7). The telescopic fixing device (461) is electrically connected to the control system (9). Under working sea conditions, the control system (9) controls the telescopic fixing device (461) to drive the annular moving plate (7) to slide and block the symmetrical opening (42) so that the side wall of the air chamber (4) is completely closed, or under extreme sea conditions, the symmetrical opening (42) is completely opened to release the pressure of the air chamber (4).

3. The integrated device for the fixed monopile wind turbine-oscillating water column wave energy conversion device according to claim 1, characterized in that, The flow regulation system (112) includes an air hole (41), a rotatable rod (110), and a connecting plate (111). One end of the rotatable rod (110) is electrically connected to the control system (9), and the other end of the rotatable rod (110) is fixedly connected to the connecting plate (111). The control system (9) drives the rotatable rod (110) to adjust the degree of obstruction of the air hole (41) by the connecting plate (111) in order to control the gas flow into the turbine generator (5) so that the power generation efficiency of the turbine generator (5) reaches the maximum.

4. The integrated device for the fixed monopile wind turbine-oscillating water column wave energy conversion device according to claim 1, characterized in that, The annular energy-concentrating plate (8) is slidably connected to the sliding ball track (44); there are two rack tracks (45), which are located on the left and right sides of the same symmetrical opening (42) on the side wall of the air chamber (4), and the rack tracks (45) extend along the axial direction of the oscillating water column wave energy conversion device (2).

5. The integrated device for the fixed monopile wind turbine-oscillating water column wave energy conversion device according to claim 1, characterized in that, The sliding system (46) includes a telescopic retainer (461) and a sliding module (462); both the telescopic retainer (461) and the sliding module (462) are electrically connected to the control system (9); the telescopic retainer (461) is connected to the annular energy-concentrating plate (8) for scaling adjustment; the sliding module (462) drives the annular energy-concentrating plate (8) to move up and down along the rack and pinion track (45) or drives the annular energy-concentrating plate (8) to slide along the sliding ball track (44).

6. The integrated device for the fixed monopile wind turbine-oscillating water column wave energy conversion device according to claim 5, characterized in that, The annular energy-concentrating plate (8) is composed of two energy-concentrating plates (6) with a central angle of 90° connected together. The first energy-concentrating plate has a sliding system (46) on one side and a telescopic fixing device (461) and an energy-concentrating plate groove (81) on the other side. The second energy-concentrating plate has a sliding system (46) on one side and an energy-concentrating plate protrusion (82) on the other side. When the sea state is in the working sea state, the sliding system (46) controls the two energy-concentrating plates (6) to slide along the sliding ball track (44). When the sliding reaches the point where the groove (81) of the energy-concentrating plate coincides with the protrusion (82) of the energy-concentrating plate, the telescopic retainer (461) of the first energy-concentrating plate retracts inward, so that the two energy-concentrating plates (6) form an annular energy-concentrating plate (8) with a central angle of 180°. When the sea state is in the extreme sea state, the telescopic retainer (461) stretches outward, the groove (81) of the energy-concentrating plate separates from the protrusion (82) of the energy-concentrating plate, and the two energy-concentrating plates (6) separate.

7. The integrated device for the fixed monopile wind turbine-oscillating water column wave energy conversion device according to claim 4, characterized in that, The annular energy-concentrating plate (8) moves up and down on the rack and pinion track (45) via the sliding module (462). In extreme sea conditions, when the annular energy-concentrating plate (8) slides from the sliding ball track (44) to the rack and pinion track (45), the sliding module (462) slides the annular energy-concentrating plate (8) to the outside of the air chamber along the rack and pinion track (45) and moves upward along the rack and pinion track (45) to move away from the sea surface.

8. The integrated device for the fixed monopile wind turbine-oscillating water column wave energy conversion device according to claim 1, characterized in that, The support column (3) is located at the upper and lower ends of the oscillating water column wave energy conversion device (2). The upper support column (3) and the corresponding lower support column (3) are aligned on the same straight line, forming a lattice structure.

9. The integrated device for the fixed monopile wind turbine-oscillating water column wave energy conversion device according to claim 1, characterized in that, The control system (9) includes a control terminal (90) and a power supply module (91). The control system (9) is electrically connected to the monitoring system (10), the sliding system (46), and the flow regulation system (112), respectively. The control terminal (90) receives information from the monitoring system (10) and issues instructions to the connected components. The power supply module (91) provides power support to the connected components.

10. The integrated device for the fixed monopile wind turbine-oscillating water column wave energy conversion device according to claim 9, characterized in that, The monitoring system (10) includes a wind speed monitoring sensor (100) and a laser wavefront displacement sensor (101). The wind speed monitoring sensor (100) and the laser wavefront displacement sensor (101) are electrically connected to the control terminal (90) and are located on the upper foundation (11).

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