Pneumatic type wave energy power generation device based on flexible cavity wall and implementation method of pneumatic type wave energy power generation device

Abstract

The invention discloses a pneumatic wave energy power generation device based on a flexible cavity wall and an implementation method thereof, and relates to the technical field of ocean renewable energy utilization, the pneumatic wave energy power generation device comprises an isolating membrane, an annular air bag, a fixing table, a double-turbine power generation device, a driving motor, a protective self-power-generation collecting mechanism and a multifunctional adjustable mechanism; the implementation method comprises the five steps of device deployment, wave condition monitoring and pre-judgment, self-adaptive adjustment, energy collection and storage and protection reset, the wave condition is pre-judged through a deep learning model, a partition pressure regulation and control system and an emergency locking system are linked, and a conventional wave condition and an extreme wave condition are adapted. The problems that an existing device is poor in wave condition adaptability, passive in protection and the like are solved, the energy capture efficiency and the structural reliability are remarkably improved, the device is suitable for offshore and deep sea scenes, installation and maintenance are convenient and fast, and certain practical value and popularization prospects are achieved.

Description

Technical Field

[0001] This invention relates to the field of marine renewable energy utilization technology, specifically to a pneumatic wave energy generation device based on flexible cavity walls and its implementation method. Background Technology

[0002] Wave energy, as a clean and renewable energy source, is a core direction for the efficient utilization of marine energy development. Oscillating water column (OWC) wave energy devices have become one of the mainstream technologies due to their simple structure and high reliability. Existing OWC devices mostly use rigid cavities (such as concrete or steel structures), where waves propel the water inside the cavity up and down, and compressed air drives a turbine to generate electricity. However, they have significant limitations: First, they are difficult to adapt to the irregularity of waves (dynamic changes in wave height, period, and direction). When wave parameters do not match the natural frequency of the cavity, the energy conversion efficiency drops significantly. Second, rigid structures have weak buffering capacity against wave impacts, and are prone to structural damage due to stress concentration under extreme sea conditions. Third, they are heavy, have high installation costs, and are difficult to construct in deep-sea areas.

[0003] To address these issues, existing technologies often achieve broadband energy capture by increasing the number of air chambers, but this leads to a simultaneous increase in structural load and device cost. Traditional rigid front walls cannot quickly adjust draft to adapt to wave parameters, limiting energy capture efficiency. Existing flexible airbag devices are mostly simple stacks of single-function modules, resulting in inflexible and imprecise adjustments and limited impact resistance. Furthermore, existing devices lack early warning mechanisms for extreme wave conditions, relying solely on passive protection, making it difficult to cope with the impact risks of extreme scenarios such as storms and waves. They have not formed a complete technical logic of "structural innovation - intelligent adaptation - active protection," making it difficult to meet the patent inventiveness requirements.

[0004] Therefore, this invention addresses the core deficiencies of existing technologies by innovatively designing a modular, segmented flexible airbag, a collaboratively optimized synchronous locking pressure stabilization system, and adding a wave recognition module. Through structural innovation and intelligent control, it achieves significant creativity in adapting to complex wave conditions and protecting against extreme wave conditions. Summary of the Invention

[0005] To address the shortcomings of existing oscillating water column wave energy devices, such as poor adaptability, slow adjustment response, passive protection against extreme wave conditions, and lack of intelligent prediction, this invention provides a flexible cavity pneumatic wave energy device based on an inflatable airbag and its implementation method. By designing a modular, segmented flexible airbag, optimizing the synchronous locking pressure stabilization system, and adding a wave recognition module, it achieves precise draft adjustment, stable pressure control under complex sea conditions, and early warning and active protection against extreme wave conditions. This effectively improves the energy conversion efficiency and structural stability under different wave conditions, meeting the patent inventiveness requirements.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pneumatic wave energy generation device based on a flexible cavity wall and its implementation method, comprising an isolation membrane, wherein annular airbags are uniformly arranged around the center of the isolation membrane, a fixed platform is provided above the isolation membrane, a first turbine power generation device and a second turbine power generation device are respectively installed on the fixed platform, and a drive motor is installed on the side of the fixed platform near the second turbine power generation device, characterized in that the pneumatic wave energy generation device based on a flexible cavity wall further comprises a flexible protective power generation and collection mechanism and a multifunctional adjustable mechanism; The protective self-generated power collection mechanism is installed in the annular airbag, and the protective self-generated power collection mechanism is used to collect changes in the position of the annular airbag. The multi-functional adjustable mechanism is disposed in the isolation membrane, and the multi-functional adjustable mechanism is used to adjust the height of the isolation membrane and the annular airbag.

[0007] Preferably, the protective self-generated power collection mechanism includes a transmission rod, one end of which is fixedly installed on the inner wall of the annular airbag, and an air chamber is slidably installed on the outer surface of the other end of the transmission rod. One end of the air chamber is fixedly installed in the annular airbag and has good sealing performance. The other end of the air chamber is fixedly connected to an annular air pipe, and an auxiliary spring is sleeved on the outer surface of the transmission rod.

[0008] Preferably, one end of the auxiliary spring is fixedly installed on the inner wall of the annular airbag, and the other end of the auxiliary spring is fixedly installed on the air chamber. An air supply control pipe is fixedly connected to the annular airbag, and an air pressure pump is fixedly connected to the end of the air supply control pipe away from the annular airbag. The air pressure pump is installed in the fixed platform.

[0009] Preferably, the multifunctional adjustable mechanism includes a folding frame, on which an annular support is uniformly rotatably mounted. The outer surface of the annular support is fixedly mounted on the inner side of the annular airbag, and the annular air tube is fixedly mounted on the inner surface of the annular support. A sliding block is symmetrically rotatably mounted on the upper end of the folding frame.

[0010] Preferably, a fixing plate is provided at the end of the sliding block away from the folding frame, the outer surface of the fixing plate is fixedly installed on the inner wall of the fixing platform, a guide groove is provided on the fixing plate, the sliding block is slidably installed in the guide groove, the folding frame is composed of connecting rods that are cross-rotated in the middle, and a compression column is fixedly installed in the sliding block on one side of the upper end of the folding frame.

[0011] Preferably, an internal toothed rotating ring is rotatably mounted on the inner wall of the fixed platform. An extrusion groove is formed on the circumference of the internal toothed rotating ring. An extrusion column on the sliding block is slidably mounted in the extrusion groove. A drive gear is meshed on the tooth surface of the internal toothed rotating ring. The middle part of the drive gear is fixedly mounted on the drive shaft of the fixed platform. The inner surface of the annular airbag is fixedly mounted on the annular bracket.

[0012] A method for implementing a pneumatic wave energy generation device based on a flexible cavity wall includes the following steps: S1, Device Deployment: In deep-sea scenarios, the device is fixed on a floating platform; in near-shore scenarios, it is integrated on shore-based, fixing the entire device to the target sea area. In the initial state, adjust the folding frame to a semi-extended state and set the initial draft of the annular airbag and the initial pressure of each air chamber. S2, Wave Condition Monitoring and Prediction: Through the multi-dimensional sensing components of the wave condition identification module, wave height, wave period, wave direction, current velocity and meteorological data are collected in real time; the edge computing module runs a deep learning model, which combines real-time sensing data and historical wave condition database to identify the trend of wave parameter changes and predict wave condition changes in advance. S3, Adaptive Adjustment: Based on wave condition monitoring and prediction results, the multi-functional adjustable mechanism and zoned pressure control system are activated. When a normal wave condition is detected, the drive motor drives the drive gear to rotate, meshing with the drive internal gear ring to rotate. The squeezing groove squeezes the squeezing column on the sliding block, pushing the sliding block to slide along the guide groove of the fixed plate, adjusting the extension degree of the folding frame, and optimizing the water depth of the annular airbag and the isolation membrane. At the same time, the pressure of each air chamber of the annular airbag is adjusted by the distributed air pressure pump in sections, so that the airbag forms a curved shape that matches the wave. When extreme wave conditions are anticipated, emergency control is triggered: distributed air pressure pumps rapidly increase the pressure in each chamber of the annular airbag, retracting the folding frame to its minimum state and reducing the draft; simultaneously, the locking device is activated to fix the folding frame and the annular support to prevent excessive structural deformation. S4, Energy Harvesting and Storage: When waves impact the annular airbag, the airbag contracts, causing the transmission rod to slide inside the air chamber, compressing the gas in the annular air tube, and driving the second turbine power generation device to generate electricity; at the same time, the water in the isolation membrane moves up and down with the waves, compressing the air in the chamber, and driving the first turbine power generation device to generate electricity synchronously; surplus electrical energy is stored through the energy storage module to ensure the basic power supply of the device during waveless periods or after extreme wave conditions. S5, Protection and Reset: The flexible material properties of the annular airbag and the buffering and reset effect of the auxiliary spring mitigate the damage to the device caused by wave impact. After the extreme wave conditions end, the system automatically deactivates the emergency state and gradually restores the pressure and draft of the annular airbag through the air pressure pump and the multi-functional adjustable mechanism, returning to the normal power generation mode.

[0013] As a preferred embodiment, the multi-dimensional sensing components of the wave condition identification module described in S2 include a radar wave height meter and a current velocity sensor. In deep-sea scenarios, an underwater acoustic sensor is added to achieve three-dimensional acquisition of wave condition data.

[0014] Preferably, the energy storage module described in S4 uses a lithium battery pack, which is suitable for independent power supply needs far from the terrestrial power grid.

[0015] Compared with the prior art, the pneumatic wave energy generation device and its implementation method based on flexible cavity walls provided by the present invention have the following beneficial effects: 1. Improved adaptability to complex wave conditions; Existing technologies largely rely on rigid cavities or single-function flexible airbags, making them difficult to adapt to irregular wave conditions such as multi-directional and oblique waves, and their energy conversion efficiency is easily affected by the matching degree of wave parameters. This solution uses a modular, segmented annular airbag design, combined with a zoned pressure control system, to dynamically adjust the airbag surface shape according to changes in wave direction; simultaneously, it utilizes a multi-functional adjustable mechanism to steplessly adjust the draft, achieving precise matching with wave parameters. The dual-turbine power generation unit (the first turbine works in conjunction with the diaphragm movement, and the second turbine is driven by airbag contraction) works in tandem, improving energy capture efficiency compared to traditional rigid devices, and its adaptability to multi-directional and oblique waves is significantly better than existing single-function modular designs.

[0016] 2. Enhanced protection against extreme weather conditions; Existing devices lack mechanisms for predicting extreme wave conditions, relying solely on passive protection, which makes them susceptible to structural damage due to stress concentration. This solution adds a wave condition monitoring and prediction system based on a deep learning model, acquiring data in three dimensions through multi-dimensional sensing components (including radar height gauges and underwater acoustic sensors). When extreme wave conditions are predicted, emergency control can be quickly triggered: the pressure of the annular airbag is rapidly increased, the folding frame retracts to its minimum state to reduce draft, and the locking device is activated simultaneously to fix the structure and prevent excessive deformation. The flexible airbag material and the buffering and reset effect of the auxiliary springs further mitigate wave impact, significantly outperforming the impact resistance of traditional rigid structures.

[0017] 3. Increased operational stability of the equipment; Existing flexible airbag devices suffer from insufficient adjustment precision, making it difficult to quickly adapt to changes in wave conditions. This solution utilizes a linkage mechanism consisting of a drive motor, drive gear, internal gear ring, and sliding block to achieve rapid dynamic adjustment of the folding frame and airbag height. A distributed air pump and a zoned pressure control system work together to precisely control the pressure in each air chamber, preventing airbag pressure fluctuations and displacement deviations. Real-time linkage between the edge computing module and the actuator significantly improves the energy capture response speed when wave direction changes, resolving the slow adjustment response and lagging adaptation issues of traditional devices and ensuring continuous and stable operation under complex sea conditions.

[0018] 4. Wide range of applications; Existing devices are mostly designed for single-area scenarios, and their rigid structures are heavy, difficult to install, and poorly adaptable to deep-sea and near-shore construction. This solution designs differentiated fixed structures for deep-sea and near-shore scenarios: in deep-sea applications, they are fixed to floating platforms, while in near-shore applications, they are integrated on shore-based systems, eliminating the need for complex construction equipment. The modular design allows for independent assembly and disassembly of each component, facilitating offshore hoisting and adapting to independent power supply needs far from land-based power grids. In near-shore scenarios, they can be directly connected to distributed power grids, adapting to the wave energy development needs of different sea areas.

[0019] 5. High degree of functional integration; Existing devices mostly focus solely on energy harvesting, lacking additional practical value. This solution, while achieving efficient power generation, allows the annular airbags in nearshore scenarios to be designed as an array structure, also serving a coastal protection function, reducing wave erosion of nearshore dikes and achieving integrated "power generation + protection." The flexible cavity wall design reduces seawater erosion of the device substrate, and combined with sealing protection and corrosion-resistant materials, reduces equipment wear and tear. Compared to traditional single-function devices, this solution offers multi-dimensional advantages in energy utilization, coastal protection, and equipment durability, resulting in greater practical value and comprehensive benefits. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an auxiliary schematic diagram of the three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the structural connection relationship of the self-generated power collection mechanism of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the connection relationship of the multifunctional adjustable mechanism structure of the present invention; Figure 6 This is an auxiliary schematic diagram illustrating the connection relationship of the multifunctional adjustable mechanism structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged view at point B in the middle; Figure 8 This is a schematic diagram of the three-dimensional structure of the present invention in its exploded state; Figure 9 For the present invention Figure 8 Enlarged view of point C in the middle.

[0021] In the picture: 1. Isolation membrane; 11. Annular airbag; 12. First turbine power generation device; 13. Second turbine power generation device; 14. Drive motor; 15. Fixed platform; 2. Protective self-generated power collection mechanism; 21. Transmission rod; 22. Air chamber cylinder; 23. Annular air pipe; 24. Auxiliary spring; 3. Multifunctional adjustable mechanism; 31. Folding frame; 32. Ring bracket; 33. Sliding block; 34. Fixing plate; 35. Internal gear swivel ring; 36. Extrusion groove; 37. Drive gear. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Example 1, please refer to Figures 1 to 9 As shown: To address the problems mentioned in the technical solutions, this application provides a pneumatic wave energy generation device based on a flexible cavity wall, comprising an isolation membrane 1, annular airbags 11 uniformly arranged around the center of the isolation membrane 1, a fixed platform 15 mounted above the isolation membrane 1, a first turbine power generation device 12 and a second turbine power generation device 13 respectively mounted on the fixed platform 15, and a drive motor 14 mounted on the side closer to the second turbine power generation device 13. Furthermore, the device also includes a protective self-generated energy collection mechanism 2 and a multi-functional adjustable mechanism 3; wherein, the protective self-generated energy collection mechanism 2 is disposed within the annular airbags 11 for capturing changes in the position of the annular airbags 11 and realizing energy conversion; the multi-functional adjustable mechanism 3 is integrated into the isolation membrane 1 for adjusting the height of the isolation membrane 1 and the annular airbags 11.

[0025] Specifically, such as Figures 3 to 5 As shown, one end of the transmission rod 21 is fixed to the inner wall of the annular airbag 11, and the outer surface of the other end is slidably fitted into the air chamber 22. One end of the air chamber 22 is fixed inside the annular airbag 11 and has good sealing performance, while the other end is fixedly connected to the annular air tube 23. An auxiliary spring 24 is sleeved on the outer surface of the transmission rod 21, which can buffer, reset, and protect the annular airbag 11. When external waves impact the outer surface of the annular airbag 11, they will push the annular airbag 11 to compress, thereby driving the transmission rod 21 to slide inside the air chamber 22. Since the transmission rod 21 and the air chamber 22 form a cylinder piston structure, the gas in the annular air tube 23 will be compressed during the sliding process. After the compressed gas is delivered to the second turbine power generation device 13, it can drive it to generate electricity.

[0026] Furthermore, one end of the auxiliary spring 24 is fixed to the inner wall of the annular airbag 11, and the other end is fixed to the air chamber cylinder 22; the annular airbag 11 is also fixedly connected to an air supply control pipe, the end of which away from the annular airbag 11 is fixedly connected to an air pressure pump, and the air pressure pump is installed inside the fixed platform 15. The annular airbag 11 is made of high-strength weather-resistant rubber and fiber-reinforced materials, and is made into a flexible rubber airbag through molding and cutting processes. The edge of the airbag has a pre-set sealing interface, inflation and deflation channel and connection point with the recovery mechanism, and a flexible support skeleton is embedded inside; the sealing cavity of the device is made of stainless steel and welded, and the side of the cavity facing the wave has a reserved airbag installation groove and a sealing protective cover installation position. The interior is equipped with a guide limit structure installation track and a recovery drive mechanism fixing seat; the sealing isolation membrane 1 is made of wear-resistant and corrosion-resistant material and is equipped with an electric drive hinge to ensure smooth opening and closing.

[0027] The protective self-generating power collection mechanism 2 can collect and convert wave energy into usable green electricity. The annular airbag 11 and the isolation membrane 1 not only reduce the corrosion and damage of seawater to the device substrate, but their material properties can also buffer and regulate the waves. By intelligently controlling the internal pressure of the annular airbag 11, it can be adapted to different wave conditions, taking into account both protective functions and energy collection and conversion efficiency.

[0028] Specifically, such as Figures 5 to 9 As shown, a ring bracket 32 ​​is uniformly rotated and installed on the folding frame 31. The outer surface of the ring bracket 32 ​​is fixed to the inner side of the ring airbag 11, and the ring air tube 23 is fixed to the inner surface of the ring bracket 32. A sliding block 33 is symmetrically rotated and installed on the upper end of the folding frame 31.

[0029] The folding frame 31 is composed of a connecting rod that is cross-rotated in the middle. Pushing the upper connecting rod of the folding frame 31 can extend and retract it. By extending the folding frame 31, the overall draft of the annular airbag 11 and the isolation membrane 1 on the water surface can be adjusted, thereby reducing the risk of damage to the device under special severe weather conditions.

[0030] A wave condition recognition module is installed on the fixed platform 15. This module is an independent intelligent unit that is linked to the core system, and includes multi-dimensional sensing components, an edge computing module, and a linkage execution interface. The multi-dimensional sensing components integrate a radar wave height meter, a current velocity sensor, and a meteorological data receiver, which can collect wave height, wave period, wave direction, current velocity, and meteorological data in real time. The edge computing module runs a deep learning long short-term memory model, and based on real-time sensing data and a historical wave condition database, it identifies and predicts extreme wave conditions and wave direction change trends in advance, and outputs the prediction results to the overall control system. This module is linked with the intelligent inflation / deflation system and the synchronous locking pressure stabilization system: when extreme wave conditions are predicted, an emergency control command is triggered, the synchronous locking device strengthens the locking, and the inflation / deflation system quickly adjusts the pressure and draft of the segmented airbags to reduce the impact load; when changes in wave direction are predicted, the segmented airbags are driven to adjust in advance to improve the energy capture response speed.

[0031] A fixing plate 34 is provided at the end of the sliding block 33 away from the folding frame 31. The outer surface of the fixing plate 34 is fixed to the inner wall of the fixing platform 15. A guide groove is provided on the fixing plate 34, and the sliding block 33 is slidably assembled in the guide groove. An extrusion column is fixedly installed in the sliding block 33 on one side of the upper end of the folding frame 31. An internal gear ring 35 is rotatably installed on the inner wall of the fixing platform 15. An extrusion groove 36 is provided on the circumference of the internal gear ring 35, and the extrusion column on the sliding block 33 is slidably assembled in the extrusion groove 36. A drive gear 37 is meshed on the tooth surface of the internal gear ring 35. The middle part of the drive gear 37 is fixedly installed on the drive shaft of the fixing platform 15. The inner surface of the annular airbag 11 is fixed to the annular bracket 32.

[0032] The rotation of the internal gear ring 35 drives the extrusion groove 36 to extrude the extrusion column on one side of the upper end of the folding frame 31, thereby pushing the sliding block 33 to move and realize the overall extension and retraction of the folding frame 31. This structure can flexibly adjust the overall height of the isolation membrane 1 and the annular airbag 11, realizing rapid dynamic adjustment of draft and wave angle, effectively improving wave energy capture efficiency; the pressure stabilization and locking system work together to avoid airbag pressure fluctuations and displacement deviations, ensuring the operational stability of the device under complex sea conditions; the extreme wave protection system can significantly reduce the risk of impact damage to the device, reduce maintenance costs, and extend the service life to more than 10 years. The device has a simple manufacturing process, is suitable for industrial production, and can be widely used in nearshore / offshore wave energy development projects, taking into account both energy utilization and structural safety.

[0033] It should be noted that the applicable scenarios of this technical solution cover the fields of marine environment and coastal engineering design, both of which are within the effective application scope of this solution; the protection scope of this invention encompasses all derivative technical solutions formed by conventional simple adjustments and equivalent substitutions using the core technical principles of this invention. Meanwhile, this device can be further designed as an array-type rectangular structure, integrated with breakwaters for deployment, thereby achieving the synergistic realization of breakwater protection and hydropower generation.

[0034] Example 2, in a deep-sea scenario far from the coast, the specific application process of Example 1 is as follows: The scenario is located in a deep-sea area more than 50 kilometers from the coastline, with a water depth of 80-150 meters. The wave characteristics of this area are characterized by large fluctuations in wave height, long periods, and no fixed wave direction. There are intermingling of oblique waves and multi-directional waves, and the area experiences extreme wave conditions with wave heights exceeding 10 meters caused by 3-5 typhoons each year. This area is far from the land power grid, requiring the equipment to have independent and stable power generation capabilities. It also requires a structure with strong impact resistance, long maintenance cycles, and installation adaptability to offshore hoisting operations.

[0035] The annular airbag 11 adopts a modular design, divided into three independent air chambers. Each air chamber is equipped with a dedicated inflation / deflation control pipe and a pressure sensor, and the pressure is regulated by distributed air pumps within the mounting platform 15. The airbag is made of a seawater-resistant composite material, with an internal support frame to enhance its wave impact resistance.

[0036] Multifunctional adjustable mechanism upgrade: The folding frame 31 connecting rod is made of titanium alloy, enhancing structural strength under high-pressure deep-sea environments; the annular bracket 32 ​​is fixed to the inner side of the annular airbag 11 with high-strength bolts to ensure synchronous deformation. The drive motor 14, paired with a reduction gearbox, enables stepless adjustment of draft to adapt to different wave height requirements.

[0037] The air chamber 22 of the protective self-generating power collection mechanism 2 adopts a double-layer sealing structure and has a built-in pressure compensation device to balance the pressure difference in the deep sea; the surface coating of the transmission rod 21 reduces the impact of seawater corrosion. The annular air pipe 23 is made of wear-resistant material and is fixed by the groove on the inner surface of the annular bracket 32 ​​to prevent pipe displacement caused by wave impact.

[0038] The intelligent control system has been upgraded: the wave condition recognition module now includes an underwater acoustic sensor, which, combined with a radar altimeter and meteorological data receiver, enables three-dimensional acquisition of wave condition data; a deep learning model is integrated into the historical wave condition database for the area. A new energy storage module with a lithium battery pack has also been added, capable of storing excess energy to ensure basic power supply during calm periods.

[0039] Workflow The device is fixed to a pre-set pile foundation on the seabed via a semi-submersible platform. In the initial state, the folding frame 31 is in a semi-extended state, and the draft of the annular airbag 11 is reduced.

[0040] The wave condition identification module collects data such as wave height, wave direction, and period in real time. When a regular multi-directional wave is detected, the pressure of each air chamber of the annular airbag 11 is adjusted by partitioning to make the airbag form an arc-shaped surface that matches the wave, thereby improving the energy capture efficiency. At the same time, the drive motor 14 drives the drive gear 37 to rotate, and through the internal gear ring 35 and the sliding block 33, the extension degree of the folding frame 31 is adjusted to optimize the draft.

[0041] When the wave impacts the annular airbag 11, the airbag contracts and pushes the transmission rod 21 to slide inside the air chamber 22, compressing the gas inside the annular air tube 23 and driving the second turbine power generation device 13 to generate electricity; at the same time, the isolation membrane 1 moves up and down with the wave, driving the first turbine power generation device 12 to generate electricity synchronously, and the two turbines work together to improve the energy conversion efficiency.

[0042] When the system anticipates an impending extreme wave condition, it immediately triggers the emergency mode: the distributed air pressure pump quickly increases the pressure in each chamber of the annular airbag 11, the folding frame 31 retracts to its minimum state, the draft decreases, and the windward surface is reduced; the synchronous locking device is activated to lock the folding frame 31 and the annular support 32 to prevent excessive structural deformation; excess electrical energy is stored in the energy storage module to ensure the device can perform self-checks and restore power after the extreme wave condition.

[0043] This solution adapts to multi-directional waves by using segmented airbags and zoned pressure regulation, effectively improving energy capture efficiency compared to traditional rigid devices.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic wave energy generation device based on a flexible cavity wall, comprising an isolation membrane (1), wherein annular airbags (11) are uniformly arranged around the center of the isolation membrane (1), a fixed platform (15) is arranged above the isolation membrane (1), a first turbine power generation device (12) and a second turbine power generation device (13) are respectively installed on the fixed platform (15), and a drive motor (14) is installed on the side of the fixed platform (15) near the second turbine power generation device (13), characterized in that, The aforementioned pneumatic wave energy generation device based on a flexible cavity wall also includes a flexible cavity wall self-generated power collection mechanism (2) and a multi-functional adjustable mechanism (3). The flexible cavity wall self-generated power collection mechanism (2) is installed in the annular airbag (11). The flexible cavity wall self-generated power collection mechanism (2) drives the second turbine power generation device (13) by the gas compression change in the annular airbag (11). The multi-functional adjustable mechanism (3) is disposed in the isolation membrane (1), and the multi-functional adjustable mechanism (3) is used to adjust the height of the isolation membrane (1) and the annular airbag (11).

2. The pneumatic wave energy generation device based on a flexible cavity wall according to claim 1, characterized in that: The protective self-generated power collection mechanism (2) includes a transmission rod (21). One end of the transmission rod (21) is fixedly installed on the inner wall of the annular airbag (11). An air chamber cylinder (22) is slidably installed on the outer surface of the other end of the transmission rod (21). One end of the air chamber cylinder (22) is fixedly installed in the annular airbag (11) and has good sealing performance. The other end of the air chamber cylinder (22) is fixedly connected to an annular air pipe (23). An auxiliary spring (24) is sleeved on the outer surface of the transmission rod (21).

3. The pneumatic wave energy generation device based on a flexible cavity wall according to claim 2, characterized in that: One end of the auxiliary spring (24) is fixedly installed on the inner wall of the annular airbag (11), and the other end of the auxiliary spring (24) is fixedly installed on the air chamber cylinder (22). A gas supply control pipe is fixedly connected in the annular airbag (11), and a gas pressure pump is fixedly connected at the end of the gas supply control pipe away from the annular airbag (11). The gas pressure pump is installed in the fixed platform (15).

4. The pneumatic wave energy generation device based on a flexible cavity wall according to claim 3, characterized in that: The multifunctional adjustable mechanism (3) includes a folding frame (31), on which a ring bracket (32) is uniformly rotatably mounted. The outer surface of the ring bracket (32) is fixedly mounted on the inner side of the ring airbag (11), and the ring air tube (23) is fixedly mounted on the inner surface of the ring bracket (32). A sliding block (33) is symmetrically rotatably mounted on the upper end of the folding frame (31).

5. A pneumatic wave energy generation device based on a flexible cavity wall according to claim 4, characterized in that: A fixed plate (34) is provided at the end of the sliding block (33) away from the folding frame (31). The outer surface of the fixed plate (34) is fixedly installed on the inner wall of the fixed platform (15). A guide groove is provided on the fixed plate (34). The sliding block (33) is slidably installed in the guide groove. The folding frame (31) is composed of connecting rods that are rotated in the middle. An extrusion column is fixedly installed in the sliding block (33) on one side of the upper end of the folding frame (31).

6. A pneumatic wave energy generation device based on a flexible cavity wall according to claim 5, characterized in that: An internal gear ring (35) is rotatably mounted on the inner wall of the fixed platform (15). An extrusion groove (36) is provided on the circumference of the internal gear ring (35). An extrusion column on the sliding block (33) is slidably mounted in the extrusion groove (36). A drive gear (37) is meshed on the tooth surface of the internal gear ring (35). The middle part of the drive gear (37) is fixedly mounted on the drive shaft of the fixed platform (15). The inner surface of the annular airbag (11) is fixedly mounted on the annular bracket (32).

7. A method for implementing a pneumatic wave energy generation device based on a flexible cavity wall, applicable to the pneumatic wave energy generation device based on a flexible cavity wall as described in any one of claims 1-6, characterized in that, Includes the following steps: S1, Device deployment: In the deep-sea scenario, the device is fixed on a floating platform, while in the near-shore scenario, it is integrated on shore and the entire device is fixed in the target sea area. In the initial state, the folding frame (31) is adjusted to a semi-extended state, and the initial draft of the annular airbag (11) and the initial pressure of each air chamber are set. S2, Wave Condition Monitoring and Prediction: Through the multi-dimensional sensing components of the wave condition identification module, data such as wave height, wave period, and wave direction are collected in real time; a deep learning model is run, which combines real-time sensing data with historical wave condition databases to identify the trend of wave parameter changes, predict wave condition changes in advance, and dynamically adjust the inflation and deflation status of airbags based on monitoring data to change the draft. S3, Adaptive Adjustment: Based on the wave condition monitoring and prediction results, activate the multi-functional adjustable mechanism (3) and the zoned pressure control system: When a normal wave condition is detected, the drive motor (14) drives the drive gear (37) to rotate, meshing with the drive internal gear ring (35) to rotate. The squeezing groove (36) squeezes the squeezing column on the sliding block (33), pushing the sliding block (33) to slide along the guide groove of the fixed plate (34), adjusting the extension degree of the folding frame (31), and optimizing the water depth of the annular airbag (11) and the isolation membrane (1). At the same time, the pressure of each air chamber of the annular airbag (11) is adjusted by the distributed air pressure pump in sections, so that the airbag forms a curved shape that matches the wave. When an extreme wave condition is anticipated, emergency control is triggered: the distributed air pressure pump rapidly increases the pressure of each air chamber of the annular airbag (11), the folding frame (31) contracts to its minimum state, and the air chambers leave the water surface as a whole; the locking device is activated simultaneously to fix the folding frame (31) and the annular support (32) to avoid excessive structural deformation. S4, Energy Harvesting and Storage: When waves impact the annular airbag (11), the airbag contracts and drives the transmission rod (21) to slide inside the air chamber (22), compressing the gas in the annular air tube (23) and driving the second turbine power generation device (13) to generate electricity; at the same time, the water in the isolation membrane (1) moves up and down with the waves, compressing the air in the chamber and driving the first turbine power generation device (12) to generate electricity synchronously; surplus electrical energy is stored through the energy storage module to ensure the basic power supply of the device during waveless periods or after extreme wave conditions; S5, Protection and Reset: The flexible material properties of the annular airbag (11) and the buffer reset effect of the auxiliary spring (24) alleviate the damage to the device caused by wave impact; after the extreme wave conditions end, the system automatically releases the emergency state and gradually restores the pressure and draft of the annular airbag (11) through the air pressure pump and the multi-functional adjustable mechanism (3), returning to the normal power generation mode.

8. The method for implementing a pneumatic wave energy generation device based on a flexible cavity wall according to claim 7, characterized in that, The multi-dimensional sensing components of the wave condition identification module described in S2 include a radar altimeter, a meteorological data receiver, etc., to achieve three-dimensional acquisition of wave condition data.

9. The method for implementing a pneumatic wave energy generation device based on a flexible cavity wall according to claim 7, characterized in that, The energy storage module described in S4 uses a lithium battery pack, which is suitable for independent power supply needs far from the terrestrial power grid.

Images