Integrated modular reef wave protection sand-fixation energy storage system

Abstract

This invention belongs to the field of marine engineering and new energy development technology, and particularly relates to an integrated modular island and reef wave-breaking, sand-fixing, and energy storage system. It includes a stepped gravity base, a permeable mesh skirt fixed to the water-facing side of the bottom of the gravity base, and a W-shaped solid wave-breaking shell fixed to the top of the gravity base. The W-shaped solid wave-breaking shell has multiple arc-shaped cavities with openings facing the water-facing side. Each arc-shaped cavity is equipped with a kinetic energy recovery component, which is connected to the input end of a power generation component. A titanium-based reef-promoting electric grid is fixed to the water-facing side of the W-shaped solid wave-breaking shell. This grid is connected to the power generation component and is used to undergo a micro-electrolysis reaction upon contact with seawater, forming crystal deposits to repair cracks and cultivate corals. After being converged and accelerated by the arc-shaped cavities, the waves drive the kinetic energy recovery component to power the power generation component. Simultaneously, the return flow velocity is dissipated by the permeable mesh skirt, causing sediment deposition, thus achieving integrated wave protection, power generation, sand fixation, and ecological restoration.

Description

Technical Field

[0001] This invention belongs to the field of marine engineering and new energy development technology, and in particular relates to an integrated modular island and reef wave-breaking, sand-fixing, and energy storage system. Background Technology

[0002] The construction of remote islands and reefs and the development of marine resources face the dual challenges of maritime defense threats and energy supply shortages. Traditional island and reef protection methods mostly employ gravity breakwaters, which have limited functionality, weak resistance to extreme sea conditions, and only provide passive defense, failing to provide energy supply for the islands and reefs. Furthermore, the power supply for islands and reefs largely relies on long-distance submarine cables or diesel generators, making it difficult to achieve energy self-sufficiency and low-carbon development.

[0003] Existing wave power generation devices mostly employ isolated point absorption or buoy-type deployments, lacking the rigid anchoring protection of gravity-supported bases. This makes them highly susceptible to fatigue fracture and overturning damage when encountering extreme typhoons and giant waves. Furthermore, the impellers exposed to open sea areas lack flow field convergence guidance, resulting in the dispersion of water flow potential energy at low sea states and extremely low start-up efficiency. Due to the random pulsation of ocean waves, traditional devices lack large-mass mechanical energy storage and frequency stabilization mechanisms, leading to severe output voltage fluctuations and causing serious low-frequency oscillations to the island and reef microgrids.

[0004] Furthermore, traditional rigid, vertical breakwaters, after blocking waves, can trigger strong downward backflow and near-wall eddies, easily causing severe slope scouring at the breakwater's leading edge. This results in the loss of large amounts of suspended sediment in the nearshore area, gradually suspending the seabed and posing a risk of instability and collapse. Traditional coastal defense projects often use highly alkaline, smooth, and high-strength concrete. This physicochemical property destroys suitable habitats for benthic organisms, preventing natural coral planktonic larvae from attaching and reproducing, thus severing the connection between artificial engineering and the natural ecological succession of the ocean.

[0005] Therefore, there is an urgent need for an integrated modular island and reef wave-breaking, sand-fixing, and energy storage system to solve this problem. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated modular island and reef wave-breaking, sand-fixing, and energy storage system to solve the above-mentioned problems.

[0007] To achieve the above objectives, the present invention provides the following solution: An integrated modular island and reef wave-breaking, sand-fixing, and energy storage system includes a stepped gravity base, a mesh permeable energy-dissipating and sand-fixing skirt fixed to the water-facing side of the bottom of the stepped gravity base, and a W-shaped solid wave-breaking shell fixed to the top of the stepped gravity base. The W-shaped solid wave-blocking shell has multiple arc-shaped cavities with openings facing the water-facing side; It also includes multiple kinetic energy recovery components, which are installed one-to-one in each of the arc-shaped cavities. The kinetic energy recovery components are connected to the input end of the power generation components. When the waves hit the arc-shaped cavities, the kinetic energy recovery components drive the input end of the power generation components to rotate, thereby generating electricity. A titanium-based reef-promoting electric grid is fixed on the water-facing surface of the W-shaped solid wave-blocking shell. The titanium-based reef-promoting electric grid is connected to the power generation component. The direct current generated by the power generation component causes the titanium-based reef-promoting electric grid to undergo a micro-electrolysis reaction when it comes into contact with seawater, causing calcium carbonate and magnesium hydroxide in the seawater to crystallize and deposit on the water-facing surface of the W-shaped solid wave-blocking shell. The crystalline deposition is used to repair surface cracks in the W-shaped wave-breaking shell and for coral cultivation; The backflow velocity after the waves impact the water-facing surface of the W-shaped solid wave-blocking shell is dissipated by the mesh permeable energy-dissipating and sand-fixing skirt, causing the sediment in the seawater to be deposited at the bottom of the water-facing side of the stepped gravity base.

[0008] Optionally, the permeable mesh skirt for water dissipation and sand fixation is inclined.

[0009] Optionally, the inclination angle of the permeable mesh energy dissipation and sand-fixing skirt is 15°-30°, and the high end of the permeable mesh energy dissipation and sand-fixing skirt is fixed to the stepped gravity base.

[0010] Optionally, the kinetic energy recovery component includes: The bottom end of the central main shaft column is rotatably engaged with the stepped gravity base, and the top end of the central main shaft column is fixed to the input end of the power generation component. The hydrodynamic energy-harvesting blades are fixed coaxially with the central main shaft column.

[0011] Optionally, a giant flywheel disk may also be included, which is fixed coaxially with the central main shaft column.

[0012] Optionally, the central main shaft column is also provided with a stabilizing structure, one end of which is connected to the W-shaped solid wave-blocking shell, and the other end of which is connected to the central main shaft column.

[0013] Optionally, the stabilizing structure includes multiple spaced main shaft stabilizing parts. Each main shaft stabilizing part includes a horizontal rod and a bushing. The bushing is sleeved on the outside of the central main shaft column, and the central main shaft column is rotatably engaged with the bushing. The bushing is fixed to one end of the horizontal rod, and the other end of the horizontal rod is fixed to the water-facing surface of the arc-shaped cavity.

[0014] Optionally, the power generation assembly includes a generator module rotor and a generator module stator, wherein the generator module stator is fixedly installed, and the generator module rotor is coaxially fixed to the top of the central main shaft column.

[0015] Optionally, the draft angle of the hydrodynamic energy capture propeller blades is 25°-35°.

[0016] Optionally, the generator module rotor is located above the historical highest tide level.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects: This system integrates a gravity base, a W-shaped wave-damping shell, and power generation components. The W-shaped arc cavity gathers ocean waves to create a high-speed water flow that drives the propellers to generate electricity, solving the problems of low energy capture efficiency and lack of rigid protection in traditional wave energy devices. By setting a 15° to 30° inclined permeable mesh skirt on the water-facing side of the base, the backflow is dispersed and slowed down using a mangrove root-like flow-blocking effect, promoting natural sediment settling around the base and fundamentally eliminating the risk of slope erosion associated with traditional vertical breakwaters. A central main shaft column coaxially fixes the hydrodynamic propellers and a giant flywheel, utilizing the flywheel's large inertia to absorb wave pulse energy and smooth the speed output, avoiding the impact of low-frequency voltage oscillations on the microgrid. A titanium-based reef-promoting grid is fixed to the water-facing side of the shell and connected to the DC output of the power generation components. It generates a microcurrent to electrolyze seawater, causing calcium carbonate and magnesium hydroxide to crystallize and deposit on the shell surface, automatically repairing micro-cracks in the concrete and providing an attachment substrate for corals, cultivating living coral armor on the surface of the artificial structure. In addition, the horizontal rods and bushings in the stabilizing structure achieve a flexible connection between the outer shell and the main shaft through rotational engagement, absorbing deformation stress under the impact of giant waves and preventing the main shaft from breaking; the generator rotor is located above the historical highest tide level, avoiding seawater corrosion. Overall, it realizes the integration of wave protection, power generation, sand fixation and ecological restoration, significantly improving the comprehensive benefits and long-term reliability of the island and reef protection project. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the structure of the present invention; The components include: 1. stepped gravity base; 2. mesh permeable energy dissipation and sand-fixing skirt; 3. W-shaped solid wave-blocking shell; 4. hydrodynamic energy-harvesting blades; 5. central main shaft column; 6. main shaft stabilizing part; 7. giant flywheel disk; and 8. generator module rotor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Reference Figure 1 The present invention discloses an integrated modular island and reef wave-breaking and sand-fixing energy storage system, including a stepped gravity base 1, a grid permeable energy dissipation and sand-fixing skirt 2 fixed on the water-facing side of the bottom of the stepped gravity base 1, and a W-shaped solid wave-breaking shell 3 fixed on the top of the stepped gravity base 1. Among them, the W-shaped solid wave-blocking shell 3 has multiple arc-shaped cavities with openings facing the water-facing side; It also includes multiple kinetic energy recovery components, which are installed one by one in each arc-shaped cavity. The kinetic energy recovery components are connected to the input end of the power generation components. When the waves hit the arc-shaped cavity, the kinetic energy recovery components drive the input end of the power generation components to rotate, thereby generating electricity. A titanium-based reef-promoting grid is fixed on the water-facing surface of the W-shaped solid wave-proof shell 3. The titanium-based reef-promoting grid is connected to the power generation component. The direct current generated by the power generation component causes the titanium-based reef-promoting grid to undergo a micro-electrolysis reaction when it comes into contact with seawater, causing calcium carbonate and magnesium hydroxide in the seawater to crystallize and deposit on the water-facing surface of the W-shaped solid wave-proof shell 3. Crystallization deposition was used to repair surface cracks in the W-shaped solid wave-breaking shell 3 and for coral cultivation; The backflow velocity after the waves impact the water-facing surface of the W-shaped solid wave-blocking shell 3 is dissipated by the mesh permeable energy-dissipating and sand-fixing skirt 2, causing the sediment in the seawater to be deposited at the bottom of the water-facing side of the stepped gravity base 1.

[0022] When waves surge towards the reef, they first impact the water-facing surface of the W-shaped solid wave-blocking shell 3. Multiple arc-shaped cavities with openings facing the water-facing surface forcefully converge and accelerate the wide-area waves, creating a high-speed water flow that drives the corresponding kinetic energy recovery components within each arc-shaped cavity. These components convert the wave's kinetic energy into mechanical energy, rotating the input end of the power generation component and generating electricity. Simultaneously, the direct current generated by the power generation component supplies the titanium-based reef-promoting grid fixed to the water-facing surface of the W-shaped solid wave-blocking shell 3. When the titanium-based reef-promoting grid comes into contact with seawater, a micro-electrolysis reaction occurs, causing calcium carbonate and magnesium hydroxide in the seawater to rapidly crystallize and deposit on the water-facing surface of the W-shaped solid wave-blocking shell 3. These crystal deposits not only automatically repair micro-cracks on the shell surface but also provide an ideal substrate for the attachment and cultivation of natural corals, ultimately forming a living coral armor on the surface of the artificial structure. The backflow formed after the waves impact the outer shell, when it flows through the mesh permeable energy dissipation and sand-fixing skirt 2 on the water-facing side of the bottom of the stepped gravity base 1, its velocity is dispersed and dissolved by the porous structure of the skirt. The silt carried in the seawater can naturally settle at the bottom of the water-facing side of the stepped gravity base 1, preventing the base from being eroded and hollowed out, thus achieving sand fixation by waves.

[0023] As an optional implementation, the permeable mesh energy dissipation and sand-fixing skirt 2 is inclined.

[0024] When the backflow formed after the waves impact the W-shaped solid wave-blocking shell 3 flows through the inclined, permeable, energy-dissipating, and sand-fixing skirt 2, the inclined slope structure further increases the contact path and the obstruction effect between the water flow and the grid. This inclined arrangement causes the backflow to be gradually slowed down during its downward flow, resulting in a more thorough energy dissipation effect. This, in turn, more effectively promotes the settling of sediment at the bottom of the stepped gravity base 1, thus enhancing the sand-fixing effect.

[0025] As an optional implementation, the inclination angle of the permeable mesh energy dissipation and sand-fixing skirt 2 is 15°-30°, and the high end of the permeable mesh energy dissipation and sand-fixing skirt 2 is fixed to the stepped gravity base 1.

[0026] The permeable mesh energy-dissipating and sand-fixing skirt 2 is set at an inclination angle of 15° to 30°, with its high end fixed to the stepped gravity base 1 and its low end extending towards the sea. When the backflow impacts the outer shell and flows down the gentle slope, the 15° to 30° slope ensures smooth water flow while also allowing the water flow to be fully dispersed by the crisscrossing permeable mesh, resulting in a sharp decrease in flow velocity. This gentle slope design simulates the flow-blocking effect of natural mangrove roots, cutting the scouring jet into countless tiny eddies, allowing suspended sediment to settle efficiently at the base edge, fundamentally eliminating the risk of erosion at the toe of traditional vertical breakwaters.

[0027] As an optional implementation, the kinetic energy recovery component includes: The bottom end of the central main shaft column 5 is rotatably engaged with the stepped gravity base 1, and the top end of the central main shaft column 5 is fixed to the input end of the power generation component. The hydrodynamic energy-capturing blade 4 is fixed coaxially with the central main shaft column 5.

[0028] After being accelerated and converged by the arc-shaped cavity of the W-shaped solid wave-blocking shell 3, the ocean waves directly impact the hydrodynamic energy-harvesting blades 4. Because the hydrodynamic energy-harvesting blades 4 are coaxially fixed to the central main shaft column 5, and the bottom end of the central main shaft column 5 is rotatably engaged with the stepped gravity base 1 while the top end is fixed to the input end of the power generation component, the blades rotate under the propulsion of the water flow, causing the central main shaft column 5 to rotate synchronously, thereby driving the power generation component to rotate and generate electricity. This process efficiently converts the kinetic energy of the ocean current into mechanical rotational energy, providing a stable input for subsequent power generation.

[0029] As an optional implementation, a giant flywheel 7 is also included, which is fixed coaxially with the central spindle column 5.

[0030] When the pulsating nature of ocean waves causes the central main shaft column 5 to rotate erratically, the giant flywheel disk 7, coaxially fixed to the central main shaft column 5, performs mechanical energy storage and frequency stabilization functions. When the impact force of the ocean waves is high, the giant flywheel disk 7 absorbs excess kinetic energy and accelerates its rotation; when the impact force of the ocean waves is low, it releases energy using its enormous rotational inertia to maintain a stable rotational speed of the central main shaft column 5. This mechanical filtering effect ensures that the rotational speed transmitted to the power generation components is extremely uniform, avoiding drastic fluctuations in output voltage caused by the random pulsation of ocean waves, thus protecting the island microgrid from low-frequency oscillations.

[0031] As an optional implementation, the central spindle column 5 is also provided with a stabilizing structure. One end of the stabilizing structure is connected to the W-shaped solid wave-blocking shell 3, and the other end of the stabilizing structure is connected to the central spindle column 5.

[0032] When the W-shaped solid wave-shielding shell 3 undergoes slight deformation or displacement under the action of extreme typhoon waves, the stabilizing structure set on the central main shaft column 5, connected to the shell at one end and the main shaft at the other, can flexibly transfer the impact force of the shell to the main shaft, while preventing the deformation of the shell from directly causing the main shaft to bend or break. This stabilizing structure plays a role in unloading and buffering, ensuring the centering and rotational stability of the central main shaft column 5 under severe sea conditions, and improving the survivability and operational reliability of the entire power generation system.

[0033] As an optional implementation, the stabilizing structure includes multiple spaced main shaft stabilizing parts 6. Each main shaft stabilizing part 6 includes a horizontal rod and a bushing. The bushing is sleeved on the outside of the central main shaft column 5, and the central main shaft column 5 and the bushing are rotatably engaged. The bushing is fixed to one end of the horizontal rod, and the other end of the horizontal rod is fixed to the water-facing surface of the arc-shaped cavity.

[0034] The stabilizing structure comprises multiple spaced main shaft stabilizing units 6, each including a horizontal bar and a bushing. The bushing is fitted around the outside of the central main shaft column 5 and rotates with it. One end of the horizontal bar is fixed to the bushing, and the other end is fixed to the water-facing surface of the arc-shaped cavity. When the W-shaped solid wave-blocking shell 3 deforms due to wave impact, the horizontal bar transmits the displacement of the shell to the bushing. However, because the bushing and the central main shaft column 5 are rotate-fitted and not rigidly locked, the main shaft does not bear bending stress, but only rotational torque. This suspended, flexible connection structure allows the impact energy of the shell to be absorbed by the swing arm and the bushing, protecting the central main shaft column 5 from breaking in large waves.

[0035] As an optional implementation, the power generation assembly includes a generator module rotor 8 and a generator module stator, wherein the generator module stator is fixedly installed and the generator module rotor 8 is coaxially fixed to the top of the central main shaft column 5.

[0036] Driven by the hydrodynamic energy-harvesting blades 4, the central main shaft column 5 rotates, and the generator module rotor 8, coaxially fixed at its top, rotates synchronously. Because the generator module stator is fixed, relative motion occurs between the rotor and stator, converting the mechanical energy transmitted from the main shaft into AC electrical energy output. This arrangement places the power generation components at the top of the main shaft, away from the complex underwater environment, facilitating maintenance. It also ensures that the power generation components receive a smooth speed input after being frequency-stabilized by the flywheel, resulting in high-quality output power.

[0037] As an optional implementation, the draft angle of the hydrodynamic energy-capturing blade 4 is 25°-35°.

[0038] The draft angle of the hydrodynamic energy-harvesting blade 4 is set between 25° and 35°. This specific pitch angle allows the blade to simultaneously capture fluid kinetic energy from different directions when cutting through three-dimensional surging water flow, generating greater lift. Compared to vertical blades or blades with too small a draft angle, blades in this draft angle range can start efficiently even in low sea states, and in high sea states, they can fully utilize the impact force of high-speed water flow to maximize the conversion of fluid kinetic energy into the rotational mechanical energy of the central main shaft column 5, thereby improving the wave energy harvesting efficiency of the entire system.

[0039] As an alternative implementation, the generator module rotor 8 is positioned above the historical high tide level.

[0040] The generator module rotor 8 is positioned above the historical high tide level, meaning that even in extreme high tides or storm surges, the power generation components will not be submerged by seawater. This arrangement avoids the risk of seawater corrosion and short circuits to the internal windings of the generator module, while also reducing the impact of salt spray on electrical components, ensuring the safe operation of the power generation system under harsh sea conditions. Furthermore, placing the generator above the tide level facilitates routine inspection, maintenance, and troubleshooting, improving the system's reliability and lifespan.

[0041] Specifically, the present invention includes: Stepped gravity base 1: Sinked and anchored to the seabed to provide overall anti-overturning support for the system; Grid permeable energy dissipation and sand fixation skirt 2: Set at the bottom of the wave-facing side of the gravity base, it extends towards the sea in a gentle slope. Its surface is provided with crisscrossing permeable grid holes to disperse wave backflow and promote in-situ sediment settling. W-shaped solid wave-blocking shell 3: fixed above the back wave side of the gravity base. It is formed by the fusion of multiple concave arc-shaped thin shells to form a continuous W-shaped water-facing surface, with its opening facing the open sea, forming a fluid acceleration funnel; Central main shaft column 5: vertically and rotatably positioned at the center of the stepped gravity base 1; Main spindle stabilizing section 6: includes horizontal bars and bushings spaced at intervals. The W-shaped solid wave-damping housing 3 is flexibly connected to the central main spindle column 5 through the horizontal bars and bushings to achieve deformation unloading and buffering. Hydrodynamic energy-capturing blade 4: It is fixedly sleeved on the lower middle part of the central main shaft column 5 and is spatially enclosed in the underwater area of ​​the concave cavity of the W-shaped solid wave-blocking shell 3. Giant flywheel 7: Located on the upper part of the central main shaft column 5, and connected to the hydrodynamic energy harvesting blade 4 through the central main shaft column 5 to achieve mechanical transmission and inertial frequency stabilization. Generator module rotor 8: Located at the top of the central main shaft column 5 and coaxially connected to the giant flywheel disk 7; Wave-powered microcurrent reef-building system: includes a titanium-based conductive mesh attached to the water-facing surface of the W-shaped solid wave-blocking shell 3, and a feeder circuit connecting the DC output terminal of the generator module rotor 8 to the titanium-based conductive mesh.

[0042] Example 1: A stepped gravity base 1 is sunk and anchored to the seabed on the wave-facing side of the island reef. Constructed of seawater-resistant reinforced concrete, it provides a shared anchoring foundation for the two upper turbine units. A permeable, energy-dissipating, and sand-fixing mesh skirt 2 is located at the bottom of the wave-facing side of the stepped gravity base 1, extending seaward at a gentle slope of 15°-30°. Its surface is composed of a crisscrossing composite permeable grid, used to disperse reflux and trap sediment. A W-shaped solid wave-blocking shell 3 is fixed behind the base, employing a core-shell composite thick-walled solid structure, with a high-strength load-bearing core inside and a low-alkalinity ecological skin on the outside. Adjacent shells intersect and merge, their wave-facing surfaces forming a concave "W" shape, serving not only as a physical barrier against giant waves but also as a highly efficient fluid acceleration funnel.

[0043] It also includes a central main shaft column 5, a main shaft stabilization unit 6, and hydrodynamic energy-harvesting blades 4. The central main shaft column 5 is vertically rotatably mounted on a stepped gravity base 1, and is forged from high-strength marine-grade stainless steel, serving as the power transmission pivot for the entire system. The main shaft stabilization unit 6 consists of two sets of horizontal bars, one end of which is fixed to the W-shaped solid wave-damping shell 3, and the other end is sleeved onto the central main shaft column 5 via a bushing. This provides flexible suspension and buffer when the shell undergoes minor deformation due to the impact of large waves, preventing the main shaft from bending and breaking. The hydrodynamic energy-harvesting blades 4 are located in the underwater part of the concave fluid acceleration zone within the shell. They consist of four streamlined blades with a draft pitch of 25°-35°, and are fixed to the lower section of the main shaft via flanges to maximize the capture of three-dimensional surging water flow.

[0044] It also includes a giant flywheel 7, a generator module rotor 8, and a titanium-based reef-promoting electrical grid. The giant flywheel 7, located in the upper middle part of the main shaft, is an alloy disc with a large outer ring that rotates synchronously with the main shaft. The generator module rotor 8 is located at the very top of the main shaft, above the historical high tide level, and its outer shell is integrally formed with heat dissipation fins. The titanium-based reef-promoting electrical grid is pre-embedded and tightly attached to the water-facing surface of the W-shaped solid wave-breaking shell 3, and is directly connected to the DC output terminal of the generator module rotor 8 via a dedicated DC power supply cable.

[0045] The actual operation workflow of this system is as follows: 1. Energy Concentration and Slow-Flow Sand-Fixing Fluid Stage: When waves surge towards the island and reef, they first impact the W-shaped solid wave-blocking shell 3. The shell acts like a city wall, blocking the straight-line impact of the waves. Simultaneously, the waves are forcibly guided and compressed to the central axis region along the W-shaped concave flow channel, forming a high-energy water flow with a surge in velocity. On the other hand, the backflow that plunges downwards after impacting the shell is instantly dispersed and weakened by the grid when it passes through the bottom permeable energy-dissipating sand-fixing skirt 2. This forces the sediment in the suspended water to settle naturally around the base, eliminating the scouring effect at the slope toe and achieving "sand fixation by waves".

[0046] 2. Kinetic energy capture mechanical stage: The high-speed converging water flow impacts the underwater hydrodynamic energy capture blade 4. The streamlined blade with an inclination angle efficiently cuts through the complex three-dimensional wave field, generating huge lift force, which drives the blade to drive the central main shaft column 5 to rotate stably, realizing the efficient conversion of fluid kinetic energy into mechanical energy.

[0047] 3. Flywheel frequency stabilization mechanical adjustment stage: Due to the periodic pulse waves, the main shaft torque will fluctuate drastically. At this time, the giant flywheel disk 7 acts as a "mechanical filter": when the waves are large, it absorbs excess kinetic energy to accelerate rotation; when the waves are small, it relies on its huge inertia to maintain the high-speed rotation of the main shaft, thereby providing an extremely stable speed input to the generator at the top and avoiding low-frequency oscillations in the grid voltage.

[0048] 4. Power Generation and Electrolysis-Induced Reef Biochemical Feedback Stage: The generator module rotor 8 smoothly converts mechanical energy into AC output. The system rectifies and shuns a very small amount of low-voltage DC power, which is fed back to the titanium-based reef-inducing grid on the outer shell surface via cables. Under the action of the micro-current, seawater undergoes a micro-electrolysis reaction, causing calcium carbonate and magnesium hydroxide in the seawater to rapidly crystallize and deposit on the W-shaped outer shell surface. This not only automatically heals micro-cracks in the concrete but also provides an excellent breeding ground for the attachment of natural corals, ultimately cultivating a layer of impact-resistant "living coral armor" on the surface of the device.

[0049] Compared with traditional technologies, the present invention has the following advantages: (1) Wave protection, disaster mitigation, and survival guarantee capabilities (protective benefits): The first integrated configuration of "power generation system embedded in gravity breakwater" is innovative. The wide, shared stepped gravity base 1 and the high-strength W-shaped solid wave-breaking shell 3 are integrated into one, which can effectively resist the direct impact of extreme typhoon waves. It completely solves the fatal weakness of previous independent wave energy devices that lacked rigid protection and were easily destroyed by wind and waves, providing an impregnable safety guarantee for the coastline of the islands and reefs behind.

[0050] (2) Wide-area wave focusing and efficient low-resistance energy capture (power generation benefits): The continuous W-shaped solid shell forms a huge fluid "acceleration funnel" in physical space, forcibly guiding and converging wide-area waves to the core area of ​​the generator (Venturi effect), which greatly improves the start-up performance under low sea states. At the same time, the use of a ship-type four-bladed propeller with inclined pitch can couple and cut complex three-dimensional surging waves more efficiently than the traditional vertical cross propeller, greatly improving the conversion efficiency of mechanical kinetic energy.

[0051] (3) Flow obstruction and energy dissipation to achieve "wave-based sand fixation" (geological benefits): The uniquely designed permeable grid sand-fixing slope skirt cleverly simulates the flow obstruction effect of mangrove roots. When the powerful downward rushing back through the grid generated by the wave impacting the outer shell, the water flow is dispersed and slowed down layer by layer, and the energy is rapidly attenuated, forcing the sediment in the suspended water to settle naturally around the base. This fundamentally eliminates the "bottom scour" hazard of traditional vertical breakwaters and actively consolidates the seabed foundation.

[0052] (4) Self-powered micro-electrolysis promotes reef formation and cultivates living ecological armor (ecological benefits): A cutting-edge physical and biochemical closed-loop system of "wave power generation - DC feedback - micro-electrolysis promotes reef formation" has been constructed. Using part of the low-voltage DC power generated by itself, a weak seawater electrolysis reaction is driven in the titanium-based pre-embedded mesh on the outer shell, which promotes the rapid crystallization of minerals such as calcium carbonate. It can not only automatically repair micro-cracks on the concrete surface, but also provide a fertile substrate for natural coral larvae, increasing their growth rate several times. Finally, a thick living coral reef fortress naturally evolves on the surface of the artificial structure, realizing the "the more it is used, the stronger it becomes" and the perfect restoration of the nearshore ecology throughout the entire life cycle of the project.

[0053] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to 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 this invention.

[0054] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An integrated modular island and reef wave-breaking, sand-fixing, and energy storage system, characterized in that, It includes a stepped gravity base (1), a mesh permeable energy dissipation and sand-fixing skirt (2) fixed on the water-facing side of the bottom of the stepped gravity base (1), and a W-shaped solid wave-blocking shell (3) fixed on the top of the stepped gravity base (1). The W-shaped solid wave-blocking shell (3) has multiple arc-shaped cavities with openings facing the water-facing side; It also includes multiple kinetic energy recovery components, which are installed one-to-one in each of the arc-shaped cavities. The kinetic energy recovery components are connected to the input end of the power generation components. When the waves hit the arc-shaped cavities, the kinetic energy recovery components drive the input end of the power generation components to rotate, thereby generating electricity. The W-shaped solid wave-blocking shell (3) has a titanium-based reef-promoting electric grid fixed on its water-facing surface. The titanium-based reef-promoting electric grid is connected to the power generation component. The direct current generated by the power generation component causes the titanium-based reef-promoting electric grid to undergo a micro-electrolysis reaction when it comes into contact with seawater, causing calcium carbonate and magnesium hydroxide in the seawater to form crystal deposits on the water-facing surface of the W-shaped solid wave-blocking shell (3). The crystallization deposition is used to repair surface cracks in the W-shaped solid wave-breaking shell (3) and for coral cultivation; The backflow velocity after the waves impact the water-facing surface of the W-shaped solid wave-blocking shell (3) is dissipated by the mesh permeable energy-dissipating sand-fixing skirt (2), causing the sediment in the seawater to be deposited at the bottom of the water-facing side of the stepped gravity base (1).

2. The integrated modular island and reef wave-breaking, sand-fixing, and energy storage system according to claim 1, characterized in that, The permeable mesh energy dissipation and sand-fixing skirt (2) is set at an angle.

3. The integrated modular island and reef wave-breaking, sand-fixing, and energy storage system according to claim 2, characterized in that, The inclination angle of the permeable mesh energy dissipation and sand-fixing skirt (2) is 15°-30°, and the high end of the permeable mesh energy dissipation and sand-fixing skirt (2) is fixed to the stepped gravity base (1).

4. The integrated modular island and reef wave-breaking, sand-fixing, and energy storage system according to claim 1, characterized in that, The kinetic energy recovery component includes: The bottom end of the central main shaft column (5) is rotatably engaged with the stepped gravity base (1), and the top end of the central main shaft column (5) is fixed to the input end of the power generation component. The hydrodynamic energy-harvesting blade (4) is fixed coaxially with the central main shaft column (5).

5. The integrated modular island and reef wave-breaking, sand-fixing, and energy storage system according to claim 4, characterized in that, It also includes a giant flywheel (7), which is fixed coaxially with the central main shaft column (5).

6. The integrated modular island and reef wave-breaking, sand-fixing, and energy storage system according to claim 4, characterized in that, The central main shaft column (5) is also provided with a stabilizing structure. One end of the stabilizing structure is connected to the W-shaped solid wave-blocking shell (3), and the other end of the stabilizing structure is connected to the central main shaft column (5).

7. The integrated modular island and reef wave-breaking, sand-fixing, and energy storage system according to claim 6, characterized in that, The stabilizing structure includes multiple spaced main shaft stabilizing parts (6). Each main shaft stabilizing part (6) includes a horizontal rod and a bushing. The bushing is sleeved on the outside of the central main shaft column (5), and the central main shaft column (5) is rotatably engaged with the bushing. The bushing is fixed to one end of the horizontal rod, and the other end of the horizontal rod is fixed to the water-facing surface of the arc-shaped cavity.

8. The integrated modular island and reef wave-breaking, sand-fixing, and energy storage system according to claim 4, characterized in that, The power generation assembly includes a generator module rotor (8) and a generator module stator, wherein the generator module stator is fixedly installed and the generator module rotor (8) is coaxially fixed to the top of the central main shaft column (5).

9. An integrated modular island and reef wave-breaking, sand-fixing, and energy storage system according to claim 4, characterized in that, The draft angle of the hydrodynamic energy-capturing blade (4) is 25°-35°.

10. An integrated modular island and reef wave-breaking, sand-fixing, and energy storage system according to claim 8, characterized in that, The generator module rotor (8) is located above the historical highest tide level.

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