Wave energy power generation unit, wave energy power generation device and wave energy power generation method thereof

Abstract

This invention discloses a wave energy power generation unit, its wave energy power generation device, and its wave energy power generation method. The wave energy power generation unit includes several individual backward-curved pipe structures connected in parallel. Each individual backward-curved pipe structure includes a bend and a float. The bend includes a vertical section and a horizontal section. The float is connected to the upper part of the horizontal section. Adjacent vertical sections of the bend are interconnected. One of the vertical sections of the individual backward-curved pipe structures is connected to an air chamber pipe, and an air turbine is installed inside the air chamber pipe. This invention combines several individual backward-curved pipe structures, with adjacent vertical sections interconnected, to perform work on the same air turbine, thereby increasing the flow rate of the reciprocating airflow inside the air chamber, significantly increasing the wave energy utilization efficiency, and improving the installed capacity. It provides a method to improve wave energy utilization efficiency by forming resonance, and obtains the maximum wave height of water surface movement inside the air chamber during the optimization of parameters of the wave energy power generation device.

Description

Technical Field

[0001] This invention relates to the field of wave energy conversion technology, and in particular to a wave energy power generation unit, a wave energy power generation device, and a wave energy power generation method. Background Technology

[0002] With the deepening implementation of my country's maritime strategy, there is an urgent need to develop offshore renewable energy power supply systems that meet the needs of deep-sea development. The single BBDB (Back Bent DuctBuoy) wave energy generation device is an existing device for utilizing ocean wave energy. This device consists of three parts: a float, a bend inlet with the inlet facing the opposite wave direction, and a rear air turbine. Due to its simple structure, the rear air turbine does not contact seawater, and it has no underwater moving parts, resulting in a significantly longer service life than other wave energy generation devices.

[0003] Currently, single-unit back-bend pipe devices are mainly designed for different pipe and floating body types. Regarding the float, Liang Xianguang believes that the best type of float is the forward-curved tube float with a forward circular chamber (Liang Xianguang, Jiang Niandong, Wang Wei, et al. Research on 5kW backward-curved tube wave power generation device [J]. Ocean Engineering, 1999, 17(004): 55-63.). Liang Xianguang also studied the single-row parallel backward-curved tube device (Liang Xianguang, Sun Peiya. Performance test study of parallel backward-curved tube wave power generation float model [J]. Ocean Engineering, 2003, 21(003): 83-88.). Sun Li combined the single backward-curved tube device with the breakwater for the safety protection of marine equipment. Wu Bijun designed a variety of single backward-curved tube device models (Wu Bijun, Li Meng, Wu Rukang, et al. Backward-curved tube wave energy utilization technology and prototype design [J]. Journal of Marine Technology, 2016(5): 10-16.). Foreign research on the device also mainly revolves around the optimization of the type and size of the float and the curved tube (Open SeaTrials on Floating Wave Energy DeviceBackward Bent DuctedBuoy and Its Performance Optimization Volume 2), (LuczkoE, Robertson B, Bailey H, et al. Representing non-linear wave energy converters in coastal wave models [J]. Renewable Energy, 2018: 376-385.), (Numerical study of a large floating oscillating water column device using a 2Dboundary elementmethod)).

[0004] However, research on wave energy arrays is virtually nonexistent. As wave energy development gradually extends to deep-sea areas, ensuring energy supply is crucial. Previously, wave energy research primarily focused on independent offshore power generation equipment; however, due to the limitations of the device's size, the power output could not meet electricity demand. To increase power generation capacity, a scattered array is typically used to arrange a larger number of individual backward-curved tube devices. However, backward-curved tube devices, due to wave forces, exhibit six degrees of freedom of motion, and the scattered array's shielding effect hinders energy capture by the rear-row devices. Furthermore, for individual backward-curved tube devices, there has been limited research on how to fully utilize wave energy to convert it into air oscillations within the chamber. Chinese patent application CN 108425788A discloses a unidirectional impulse wave energy generation device. The device includes a fixed block and a first fixed ring installed inside an air chamber. An aluminum alloy cover plate has a movable rod that passes through and rotates around the first fixed ring. The first end of an air intake bend is installed in a draft tank located below the aluminum alloy cover plate, and its second end is located above the buoyancy tank and has a second fixed ring. A rubber sheet that can be tightly or loosely attached to the second fixed ring is installed inside the second end of the air intake bend. An exhaust straight pipe is installed on the upper part of the air chamber and connects to the mounting pipe and the unidirectional impulse air turbine via a first flange. In other words, this design only improves the internal structure of the single-unit backward-curved pipe and cannot achieve better utilization of wave energy. Chinese patent application publication number CN 107044379 A discloses a marine self-propelled green energy power supply device. The hull is equipped with at least one wave energy power generation unit group, which includes a right-side wave energy power generation unit and a left-side wave energy power generation unit. In other words, this solution installs a single-unit backward curved pipe structure on the hull. However, this obviously reduces the vibration frequency of the backward curved pipe structure itself. Moreover, this solution only utilizes the single-unit backward curved pipe structure and cannot achieve a better utilization of wave energy. Summary of the Invention

[0005] The purpose of this invention is to provide a wave energy power generation unit, a wave energy power generation device, and a wave energy power generation method to solve the problems existing in the prior art. By combining and connecting several individual backward-curved pipe structures, the vertical sections of adjacent curved pipes are interconnected and work is performed on the same air turbine, which can increase the flow rate of the reciprocating airflow in the air chamber, significantly increase the utilization efficiency of wave energy, and improve the installed capacity.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides a wave energy power generation unit, comprising several individual backward-curved tube structures connected in parallel. Each individual backward-curved tube structure includes a bend and a float. The bend includes a vertical section and a horizontal section. The float is connected to the upper part of the horizontal section. Adjacent vertical sections are interconnected. One of the vertical sections of the individual backward-curved tube structures is connected to an air chamber pipe, and an air turbine is installed inside the air chamber pipe.

[0008] Preferably, the air chamber pipe is in the same direction as the horizontal section of the bend and is located above the float.

[0009] Preferably, the cross-section of the horizontal section of the bend is fan-shaped, forming an open horizontal section structure.

[0010] Preferably, the floats are connected as a whole.

[0011] The present invention provides a wave energy power generation device, including the wave energy power generation unit described above, wherein multiple wave energy power generation units are connected in a ring or polygon.

[0012] Preferably, the wave energy generation unit is directly connected to the adjacent wave energy generation unit, or connected through a connecting section.

[0013] Preferably, the connecting section is a connecting bend and is made of the same material as the float.

[0014] The present invention also provides a method for generating electricity using a wave energy power generation device, comprising the following steps:

[0015] Under certain wave conditions, adjust the draft of the wave power generation device and measure the wave height of the wave motion in the air chamber corresponding to different drafts.

[0016] Compare the measured wave heights and select the draft corresponding to the highest wave height;

[0017] Install the wave energy power generation device according to the selected draft depth to generate electricity using wave energy.

[0018] Preferably, when adjusting the draft,

[0019] The wave height of wave motion is measured according to the low-density draft depth interval, and a segment with a relatively large wave height is selected.

[0020] The wave height of the segment is measured by high-density draft spacing to obtain the draft corresponding to the maximum wave height.

[0021] Preferably, the parameters of the air chamber opening direction, air chamber opening size, air chamber cross-sectional area, bend length, and bend opening cross-sectional area are optimized.

[0022] The present invention achieves the following technical effects compared to the prior art:

[0023] (1) The wave energy power generation unit of the present invention combines and connects several individual back-bent pipe structures, so that the vertical sections of adjacent bend pipes are interconnected and work is done on the same air turbine, which can increase the flow rate of the reciprocating airflow in the air chamber, significantly increase the utilization efficiency of wave energy, and improve the installed capacity.

[0024] (2) The wave energy power generation device of the present invention is formed by connecting multiple wave energy power generation units into a ring or polygon, forming a compact array with a certain topological structure. This not only avoids the shading effect (when a single back-bent pipe structure is used alone, it has six degrees of freedom of motion due to the wave force, and the scattered array is not conducive to energy capture by the rear array due to the shading effect), but also makes the wave energy power generation device resonate with the wave motion by reasonably arranging the array number of wave energy power generation units, which significantly improves the overall performance of the array device.

[0025] (3) The wave energy power generation device of the present invention is composed of wave energy power generation units connected together, with a connecting section in between. The connecting section can be used as a float or as an integrated power supply device for the back-end air turbine. Therefore, the overall structure is assembled, compact, easy to install and disassemble, can be put into use immediately, can be disassembled multiple times, and has sustainable utilization capability. In addition, since the overall structure is a modular assembly structure, the topology, number of arrays, number of turbines, etc. can be flexibly arranged according to the requirements of the commissioning location, service position and power demand.

[0026] (4) The wave energy power generation device of the present invention can be assembled from multiple wave energy power generation units. The wave energy power generation units can share anchor points and reasonably arrange mooring methods, thereby reducing the commissioning cost.

[0027] (5) This invention provides a way to improve wave energy utilization efficiency by forming resonance, which changes the existing technology that only improves a single back-bend pipe structure and increases the number of scattered arrays of back-bend pipe structures to increase power generation. In the process of optimizing the parameters of the wave energy power generation device, the maximum wave height of water surface movement in the air chamber is obtained, and then the relevant parameters are improved to achieve the best operating conditions of the device and improve the utilization efficiency of wave energy. Attached Figure Description

[0028] 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 introduced 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.

[0029] Figure 1A schematic diagram of a rectangular single-unit backward-bent pipe structure;

[0030] Figure 2 A schematic diagram of a wave energy generation unit formed by a rectangular single-unit backward-bent tube structure;

[0031] Figure 3 This is a schematic diagram of a single rectangular unit with a backward-curved pipe structure in a wave energy power generation unit.

[0032] Figure 4 A schematic diagram of a polygonal wave energy generation device formed by a rectangular single-unit backward-bent tube structure.

[0033] Figure 5 A schematic diagram of a ring wave energy generation device formed by a rectangular single-unit backward-bent tube structure.

[0034] Figure 6 This is a schematic diagram of a fan-shaped single-unit backward-bent pipe structure;

[0035] Figure 7 A schematic diagram of a wave energy generation unit formed by a fan-shaped single-unit backward-curved tube structure;

[0036] Figure 8 A schematic diagram of a wave energy generation device formed by a fan-shaped single-unit backward-curved tube structure.

[0037] Figure 9 A graph showing the effect of draft on wave height inside the air chamber;

[0038] The components are: 1. Horizontal section of the bend; 2. Vertical section of the bend; 3. Float; 4. Air chamber pipe; 5. Connecting section. Detailed Implementation

[0039] 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.

[0040] The purpose of this invention is to provide a wave energy power generation unit, a wave energy power generation device, and a wave energy power generation method to solve the problems existing in the prior art. By combining and connecting several individual backward-curved pipe structures, the vertical sections of adjacent curved pipes are interconnected and work is performed on the same air turbine, which can increase the flow rate of the reciprocating airflow in the air chamber, significantly increase the utilization efficiency of wave energy, and improve the installed capacity.

[0041] 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.

[0042] refer to Figure 1-3 , Figure 6-7 As shown, the present invention provides a wave energy generation unit, comprising a plurality of individual backward-curved tube structures connected in parallel, wherein the individual backward-curved tube structures can be rectangular (e.g., Figure 1-3 As shown), it can also be fan-shaped (such as...). Figure 6-7As shown, all components are assembled from baffles. The baffles can be connected by bolts and can be fitted with connecting gaskets. It should be noted that the bolts include lateral bolts and bottom bolts. Lateral bolts ensure horizontal positioning, while bolts at the bottom of the bend limit vertical oscillations. The use of bolts in all directions enhances the overall integrity of the single-unit back-bend structure, preventing wave impact from affecting structural stability in seawater. The single-unit back-bend structure includes the bend and a float 3. The float 3 can be a box-type structure with internal counterweights to adjust its position relative to the water surface, or it can be made of lightweight material. In short, the float 3 provides buoyancy, allowing the entire device to float on the water surface with a certain draft. The bend includes a vertical section 2 and a horizontal section 1, which are interconnected. The horizontal opening of the horizontal section 1 collects waves, and an air chamber is formed within the vertical section 2. When waves enter the horizontal section 1, they impact the air inside the air chamber, creating oscillations. These oscillating airs impact an air turbine, causing the air turbine to perform work and generate electricity. Float 3 is connected to the upper part of the horizontal section 1 of the bend. The connection can be achieved using a conventional rigid connection structure, such as a connecting frame, positioning grooves, screws, tenons, and matching mortises. The size of float 3 is adjusted according to the required draft. The individual rear bend structures are connected on the side, also using bolts. The connection positions can be the same as the bolt positions of the individual rear bend structures, meaning that wave power generation units can be directly assembled on the baffle. It is important to note that adjacent vertical sections 2 of the bend are interconnected, forming a connected air chamber. Furthermore, one of the vertical sections 2 of the single-unit backward-bent pipe structure is connected to an air chamber pipe 4, which houses an air turbine. This air turbine can be an impingement turbine, a Wells turbine, or similar type. A generator and battery are installed at the rear end of the air turbine. Adjacent horizontal sections 1 of the bend are not interconnected; that is, a baffle is installed between adjacent horizontal sections 1. The baffle acts as a flow straightener, directing the water flow more along the wave crest line, which is more conducive to the conversion of wave energy into air kinetic energy. Additionally, the number of single-unit backward-bent pipe structures in the wave energy power generation unit should not be excessive. Too many structures will cause phase differences in the wave surface motion within the air chamber, resulting in poor consistency and hindering airflow convergence. Therefore, the number of single-unit backward-bent pipe structures should be determined reasonably based on experiments. The air chamber duct 4 can be installed vertically or horizontally according to design requirements, and can be located inside or outside the vertical section 2 of the bend, as long as it can communicate with the air chamber of the vertical section 2 of the bend. This invention's wave energy generation unit combines and connects several individual bend structures, allowing adjacent vertical sections 2 of the bend to communicate with each other. This means that the air chambers of a group of wave energy generation units are shared and work is performed on the same air turbine, increasing the flow rate of the reciprocating airflow within the air chamber, significantly increasing the utilization efficiency of wave energy, and improving the installed capacity.

[0043] The air chamber duct 4 can be aligned with the horizontal section 1 of the bend, meaning it can be perpendicular to the vertical section 2 of the bend. In this case, the air chamber duct 4 is a section of pipe connected to and extending outward from the vertical section 2 of the bend. To guide the airflow into the air chamber duct 4, a baffle needs to be installed at the top of the vertical section 2 of the bend. Furthermore, the diameter of the air chamber duct 4 can be smaller than the inner diameter of the vertical section 2 of the bend, thereby enhancing the impact force of the gas inside the air chamber on the air turbine within the air chamber duct 4, increasing the wave energy utilization efficiency, and improving the installed capacity. The air chamber duct 4 can be installed on top of the float 3, where it can be supported by the float 3 to ensure the stability of the air chamber duct 4 installation structure and prevent vibrations from affecting the overall structural reliability.

[0044] like Figure 6-7 As shown, the cross-section of the horizontal section 1 of the bend is fan-shaped, forming an open structure that increases the inlet size, allowing for a larger collected wave flow. The wave flow gradually moves from the horizontal section 1 towards the vertical section 2. As the inner diameter of the horizontal section 1 gradually decreases, the wave energy pressure increases, and the space in the vertical section 2 is filled more completely. At this point, the air chamber in the vertical section 2 can be squeezed and oscillated by the incoming waves, generating powerful air oscillations that better drive the air turbine to perform work. Therefore, the fan-shaped horizontal section 1 structure, with its inlet cross-sectional area larger than the air chamber oscillation cross-sectional area, has a better wave-gathering effect and is more conducive to increasing the rise and fall amplitude of the wave surface within the air chamber. Simultaneously, the vertical section 2 can also be designed as a fan-shaped structure. The connection between the vertical section 2 and the horizontal section 1 should be smoothly transitioned to avoid obstructing the water and air flow.

[0045] Different individual back-bent tube structures of float 3 can be set up separately, and after being connected into a wave energy power generation unit, they can be connected into a whole, or directly made from a single float 3.

[0046] like Figure 4-5 , Figure 8 As shown, the present invention provides a wave energy power generation device that can utilize the wave energy power generation unit described above, with multiple wave energy power generation units connected in a ring (e.g., Figure 5 and Figure 8 (as shown) or polygons (such as) Figure 4(As shown). Aquaculture cages are mostly cylindrical or prismatic. Quadrilateral or ring-shaped wave energy generation devices can be combined with existing offshore production and living equipment to power the aquaculture cages. If the wave energy generation device is combined with the pile foundation of a deep-sea wind turbine (for wind and wave energy coupling), a triangular wave energy generation device array scheme can be applied. As wave energy development gradually extends to the deep sea, ensuring energy supply is a crucial aspect. Previously, wave energy research was mainly used for independent offshore power supply equipment. Due to the size limitations of the device itself, the power generation capacity could not meet the electricity demand. To meet the requirements, a scattered array of multiple devices is generally used. When a single backward-curved pipe structure is used alone, it has six degrees of freedom of motion due to wave forces. The scattered array is not conducive to energy capture by the rear devices due to the shielding effect. The wave energy generation device of this invention consists of multiple wave energy generation units connected into a ring or polygon, forming a compact array with a certain topological structure. This not only avoids the shielding effect, but also, by rationally arranging the number of wave energy generation units in the array, allows the motion of the wave energy generation device to resonate with the wave motion, significantly improving the overall performance of the array device. It should be noted that each ring-shaped or polygonal wave power generation device will have different coupling and resonance conditions due to varying sea areas and wave conditions. Therefore, specific designs are required based on the application scenario and resonance characteristics. Since the wave power generation device has a modular, modular assembly structure, the topology, array quantity, and turbine quantity can be flexibly arranged according to the deployment location, service position, and power demand requirements. Connections can be made using bolts, and the connection method can refer to that of wave power generation units.

[0047] Furthermore, the wave energy generation units formed by the fan-shaped backward-curved tube structure can be directly connected to form a ring structure. However, when the wave energy generation units formed by the rectangular backward-curved tube structure are connected to form a ring or polygonal structure, a connecting section 5 needs to be set at the bend to form an arc transition. The connecting section 5 can serve as a float 3 or as an integrated power supply device for the rear air turbine. Therefore, the overall structure is assembled, compact, easy to install and disassemble, ready to use immediately, and can be disassembled multiple times, possessing sustainable utilization capabilities.

[0048] Connecting section 5 can be a connecting bend, made of the same material as float 3. Using connecting section 5 can balance the buoyancy distribution of the wave energy generation device and reduce the number and volume of floats 3. Multiple wave energy generation units are assembled to form a wave energy generation device. These units can share anchor points and be rationally arranged for mooring, thereby reducing commissioning costs.

[0049] The present invention also provides a method for generating electricity using a wave energy power generation device, which can be the wave energy power generation device described above, and includes the following steps:

[0050] Under certain wave conditions, the draft of the wave power generation device can be adjusted. This can be achieved by replacing different floats 3 (changing to different volumes or materials, or adjusting the internal weight of floats 3). The wave height of the wave motion in the air chamber corresponding to different drafts can be measured.

[0051] Compare the measured wave heights and select the draft corresponding to the highest wave height;

[0052] A wave power generation device is installed in the seawater according to the selected draft depth to generate electricity using the wave energy of the seawater.

[0053] This invention provides a method to improve wave energy utilization efficiency by forming resonance, which changes the existing technology that simply improves a single back-bend pipe structure or increases the number of scattered back-bend pipe structures to increase power generation. It can obtain the maximum wave height of water surface movement in the air chamber during the optimization of parameters of the wave energy power generation device, and then improve the relevant parameters to achieve the best operating conditions of the device and improve the utilization efficiency of wave energy.

[0054] Furthermore, when adjusting the draft, first measure the wave height according to the low-density draft spacing, and select a segment with a relatively large wave height.

[0055] Then, measure the wave height of the segment according to the high-density draft depth spacing to obtain the draft depth corresponding to the maximum wave height.

[0056] After optimizing the draft, parameters such as the direction of the air chamber opening, the size of the air chamber opening, the size of the air chamber cross-sectional area, the length of the bend, and the cross-sectional area of ​​the bend opening can be further optimized to obtain the best resonance effect.

[0057] This invention provides a specific optimized embodiment. Under certain wave conditions, the optimal parameters of a single-unit backward-bent pipe structure are found by studying the parameters.

[0058] Taking draft as an example, the single-unit backbend structure aims to maximize energy conversion. Through calculation, the optimal draft of the single-unit backbend structure is obtained, which guides the selection of float material and the counterweight of the single-unit backbend structure in practical applications.

[0059] This embodiment references wave conditions specific to the Qingdao sea area. The single-unit backward-curved pipe structure is designed with a length of 13.6m, a width of 6.4m, and a height of 10.4m. The horizontal section 1 of the bend is 13.6m long, and the vertical section 2 is 10.4m long, forming a rectangular tube with a length-to-width ratio of 2:1 (6.4m long and 3.2m wide). To provide buoyancy and maintain the balance of the single-unit backward-curved pipe structure, a 7.2m × 10.4m × 6.4m cuboid float 3 is installed.

[0060] Using numerical calculation methods, under the Froude similarity criterion, the scale of the numerical model is chosen to be 1:16.

[0061] The prototype wave conditions are a wave height of 2m and a period of 7s. Under the same similarity criterion, the numerical wave conditions are a wave height of 0.12m and a period of 1.75s.

[0062] By varying the draft position of the single-unit back-bend pipe structure, and using the distance from the bottom of the front wall of the device to the water surface as the draft, the wave height response of the wave motion within the air chamber was studied under draft depths of 0.215m, 0.240m, 0.265m, 0.290m, 0.315m, and 0.340m. It can be seen that under the draft conditions of 0.240m-0.265m for the single-unit back-bend pipe structure, the wave motion response intensity within the air chamber is relatively large, and the amplitude of the water surface movement within the air chamber is stronger than the amplitude of the water surface movement in the wave field. Further in-depth research within this draft range, such as... Figure 9 As shown, a curve illustrating the relationship between draft and wave height for a single backward-curved pipe structure reveals an optimal draft of 0.255m. This method optimizes the draft parameter and can guide the design and manufacture of array structures for subsequent wave energy power generation devices.

[0063] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A wave energy power plant, characterized by: The device includes a wave power generation unit, which comprises several individual backward-curved tube structures connected in parallel. Each individual backward-curved tube structure includes a bend and a float. The bend includes a vertical section and a horizontal section. The float is connected to the upper part of the horizontal section. The cross-section of the horizontal section is fan-shaped or rectangular. When it is fan-shaped, it forms an open horizontal section structure. Adjacent vertical sections are interconnected. One of the vertical sections of the individual backward-curved tube structures is connected to an air chamber pipe. An air turbine is installed inside the air chamber pipe. The air chambers of a group of wave power generation units are shared and work is performed on the same air turbine. Multiple wave energy generation units are connected in a ring or polygon to form a compact array with a certain topology, avoiding the shading effect. By arranging the array of wave energy generation units, the movement of the wave energy generation device and the wave movement can resonate. The wave energy generation unit is directly connected to the adjacent wave energy generation unit, or connected through a connecting section; The connecting section is a connecting bend and is made of the same material as the float. The wave energy generation units formed by the fan-shaped back-bend tube structure are directly connected to each other to form a ring structure, while the wave energy generation units formed by the rectangular back-bend tube structure need to be connected at the bend corner to form an arc transition when connected to form a ring or polygon structure.

2. The wave energy generation device according to claim 1, characterized in that: The air chamber pipe runs in the same direction as the horizontal section of the bend and is located above the float.

3. The wave energy generation device according to claim 2, characterized in that: The connecting section is a connecting bend and is made of the same material as the float.

4. A method for generating electricity using a wave energy power generation device, characterized in that, The application of the wave energy generation device as described in any one of claims 1-3 includes the following steps: Under certain wave conditions, adjust the draft of the wave power generation device and measure the wave height of the wave motion in the air chamber corresponding to different drafts. Compare the measured wave heights and select the draft corresponding to the highest wave height; Install the wave energy power generation device according to the selected draft depth to generate electricity using wave energy.

5. The power generation method of the wave energy power generation device according to claim 4, characterized in that: When adjusting the draft, the wave height of the wave motion is measured according to the low-density draft spacing, and the segment with a relatively large wave height is selected. The wave height of the segment is measured by high-density draft spacing to obtain the draft corresponding to the maximum wave height.

6. The power generation method of the wave energy power generation device according to claim 4 or 5, characterized in that: The parameters of air chamber opening direction, air chamber opening size, air chamber cross-sectional area, bend length, and bend opening cross-sectional area are optimized.

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