A pneumatic wave power generation and wave dissipation device

Abstract

The present invention provides a pneumatic wave power generation and wave dissipation device, belonging to the technical field of wave energy power generation. The pneumatic wave power generation and wave dissipation device includes: a floating cabin structure, the interior of the floating cabin structure has a cavity, and a plurality of water inlets communicating with the cavity are provided on the side of the floating cabin structure, and the water inlets are used for capturing waves to drive the movement of air in the cavity; a plurality of air duct openings communicating with the cavity are provided at the top of the floating cabin structure. An air turbine is arranged at the air duct opening, and the air turbine is used for converting the air kinetic energy generated by the movement of air in the cavity into mechanical energy. The water inlets are used to capture wave energy, the waves drive the movement of air in the cavity, realizing the conversion of wave energy into air kinetic energy, and at the same time, accompanied by the compression and expansion of air, thereby driving the air turbine arranged at the air duct opening to rotate, realizing the conversion of air kinetic energy into mechanical energy, and further driving a generator to generate electricity.

Description

Technical Field

[0001] This application relates to the technical field of offshore power generation and wave dissipation, and in particular to a pneumatic wave power generation and wave dissipation device. Background Art

[0002] To develop marine resources and develop the marine economy, it is urgent to solve the problem of power shortage on islands and offshore platforms. In order to solve this problem scientifically and economically, it is necessary to adapt measures to local conditions and fully develop the inexhaustible marine energy. Wave energy is the most widely distributed renewable clean energy in marine energy. If wave energy can be used for power generation efficiently and reliably, the above-mentioned power shortage problem can be effectively solved. However, at present, wave power generation technology is still an emerging technology, and there are still technical barriers in terms of efficiency, reliability, and construction cost. At present, fixed breakwaters are usually installed near the shore to resist the impact of waves on nearshore artificial structures. With the increasing demand for marine resources by humans, the pace towards the deep sea is accelerating, and floating wave dissipation devices have become an important choice for protecting various deep-sea marine equipment. Summary of the Invention

[0003] The purpose of the present invention is to provide a pneumatic wave power generation and wave dissipation device to solve the deficiencies of the prior art.

[0004] To achieve the above purpose, the specific technical solutions adopted by the present invention are as follows:

[0005] A pneumatic wave power generation and wave dissipation device, the device includes a floating cabin structure and an air turbine; the floating cabin structure includes a first cabin and a second cabin adjacent to it. A first floating cabin is provided outside the first cabin, and a second floating cabin is provided outside the second cabin. The first cabin and the second cabin can float on the sea surface; the air turbines are respectively arranged above the first cabin and the second cabin.

[0006] Further, the first cabin includes a first cavity arranged inside, a first water inlet located outside the bottom of the cabin and communicating with the cavity, a first air duct opening located at the top of the cabin and communicating with the cavity, and a first bottom plate located at the bottom of the cabin; the second cabin includes a second cavity arranged inside, a second water inlet located outside the bottom of the cabin and communicating with the cavity, a second air duct opening located at the top of the cabin and communicating with the cavity, and a second bottom plate located at the bottom of the cabin; the air turbines are respectively arranged at the first air duct opening and the second air duct opening for converting the air kinetic energy generated by the air movement in the first cavity and the second cavity into mechanical energy; at least part of the adjacent positions of the first cavity and the second cavity are separated from each other, the first water inlet and the second water inlet are separated from each other, and the first air duct opening and the second air duct opening are separated from each other or communicated with each other, that is, the parts of the first cavity and the second cavity below the sea surface are separated from each other, and the parts above the sea surface are separated from each other or communicated with each other.

[0007] Further, both the first cabin and the second cabin are in an L-shaped structure, and both the first cavity and the second cavity are also in an L-shaped structure. Water enters the floating cabin structure from below. After the wave energy is converted into air kinetic energy, the air turbine converts the air kinetic energy into mechanical energy.

[0008] Furthermore, the first floating cabin is arranged at the L-shaped corner position of the first cabin, and the bottom surface and the side surface on the wave-back side of the first floating cabin are surrounded by the L-shaped corner of the first cabin; the second floating cabin is arranged at the L-shaped corner position of the second cabin, and the bottom surface and the side surface on the wave-back side of the second floating cabin are surrounded by the L-shaped corner of the second cabin.

[0009] Further, the horizontal heights of the first bottom plate of the first cabin and the second bottom plate of the second cabin are set to the same horizontal plane or horizontal planes at different heights, that is, the height positions of the bottom plates of the two cabins are set according to the actual wave conditions to control the opening sizes of the first water inlet and the second water inlet.

[0010] Further, the first cavity includes a first flow channel cavity and a first air chamber communicated therewith. The first air chamber is located above the first flow channel cavity. The first water inlet is communicated with the first flow channel cavity, and the first air duct opening is communicated with the first air chamber; the second cavity includes a second flow channel cavity and a second air chamber communicated therewith. The second air chamber is located above the second flow channel cavity; the second water inlet is communicated with the second flow channel cavity, and the second air duct opening is communicated with the second air chamber; the first flow channel cavity and the second flow channel cavity are located below the sea surface and are separated from each other. The first air chamber and the second air chamber are located above the sea surface and are separated from each other or communicated with each other. Both the first air chamber and the second air chamber are communicated with the atmosphere through an air turbine; after the wave energy is captured by the first water inlet, the wave generates fluctuations in the first flow channel cavity, pushing the air movement in the first air chamber to realize the conversion of wave energy into air kinetic energy. Along with the compression and expansion of the air, the air turbine arranged at the first air duct opening is driven to rotate to realize the conversion of air kinetic energy into mechanical energy; after the wave energy is captured by the second water inlet, the wave generates fluctuations in the second flow channel cavity, pushing the air movement in the second air chamber to realize the conversion of wave energy into air kinetic energy. Along with the compression and expansion of the air, the air turbine arranged at the second air duct opening is driven to rotate to realize the conversion of air kinetic energy into mechanical energy.

[0011] Furthermore, the first air chamber is separated from the second air chamber, and the first air duct opening is separated from the second air duct opening. Two air turbines are provided and are respectively arranged at the first air duct opening and the second air duct opening; or the first air chamber is communicated with the second air chamber, that is, the first air duct opening is communicated with the second air duct opening, and one air turbine is provided.

[0012] Furthermore, the first water inlet and the second water inlet are arranged back to back. The first water inlet is located on the wave-facing side of the floating cabin structure, and the second water inlet is located on the wave-back side of the floating cabin structure. Water bodies on the wave-facing side and the wave-back side are captured from two opposite directions through the first water inlet and the second water inlet respectively. After the water bodies enter and exit the first flow channel cavity and the second flow channel cavity respectively, they push the water surfaces of the first air chamber and the second air chamber to oscillate, and then push and squeeze the air in the air chambers, realizing the conversion of wave energy into air kinetic energy.

[0013] Furthermore, a common side plate is shared between the first cabin body and the second cabin body, and the first flow channel cavity and the second flow channel cavity are separated by the side plate. When the top of the side plate is close to the tops of the first floating cabin and the second floating cabin and does not extend to the heights of the first air chamber and the second air chamber, the first air chamber and the second air chamber are interconnected. When the top of the side plate extends upward to be higher than the tops of the first floating cabin and the second floating cabin, that is, extends to the heights where the first air chamber and the second air chamber are located, the first air chamber and the second air chamber are separated from each other.

[0014] Furthermore, the device further includes a mooring member, and the mooring member is arranged at the bottom or side of the floating cabin structure for adjusting and / or restricting the position of the floating cabin structure so that the floating cabin structure is located in a preset area.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The pneumatic wave power generation and wave dissipation device provided by the present invention undergoes relative movement with the water body under the action of waves. The water body upstream / downstream of the device can flow into or out of the first / second cavity through the first / second water inlet. The water body in the first / second cavity makes the air in the first / second air chamber move reciprocally, realizing the conversion of wave energy into air kinetic energy. At the same time, accompanied by the compression and expansion of the air, the air turbine arranged at the first / second air duct opening is driven to rotate, realizing the conversion of air kinetic energy into mechanical energy, and then driving the generator to generate electricity. At the same time, the capture of wave energy by the pneumatic power generation and wave dissipation device and the reflection of waves are utilized to enhance the wave dissipation performance and reduce the water surface fluctuation downstream.

[0017] Through actual verification, the present invention can improve the capture width ratio of wave energy, broaden the frequency response width, and enhance the wave dissipation effect. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the change of the capture width ratio of the device of the present invention with the wave period.

[0020] Figure 3 It is a schematic diagram of the change of the transmission coefficient of the present device with the wave period.

[0021] Among them, 10 - floating cabin structure, 20 - air turbine, 11 - first cabin body, 12 - second cabin body, 61 - first floating cabin, 62 - second floating cabin, 31 - first cavity, 41 - first water inlet, 51 - first air duct opening, 13 - first bottom plate, 32 - second cavity, 42 - second water inlet, 52 - second air duct opening, 14 - second bottom plate, 15 - side plate, 311 - first flow channel cavity, 312 - first air chamber, 321 - second flow channel cavity, 322 - second air chamber, 70 - mooring component. Specific implementation manners

[0022] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application and make the above - mentioned objects, features, and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0023] Embodiment 1:

[0024] See Figure 1 As shown, the embodiments of the present application provide a pneumatic wave power generation and wave - dissipating device, including: a floating cabin structure 10 and an air turbine 20. The interior of the floating cabin structure 10 has cavities 31 and 32. A plurality of water inlets 41 and 42 communicating with the cavities 31 and 32 are provided on the side of the floating cabin structure 10. The water inlets 41 and 42 are used to capture waves to drive the air movement in the cavities 31 and 32. A plurality of air duct openings 51 and 52 communicating with the cavities 31 and 32 are provided on the top of the floating cabin structure 10. The air turbine 20 is arranged at the air duct openings 51 and 52. The air turbine 20 is used to convert the air kinetic energy generated by the air movement in the cavities 31 and 32 into mechanical energy. Optionally, the air turbine 20 may include a Wells air turbine or an impulse air turbine. Of course, the air turbine 20 may also be implemented by other air turbines as long as it can convert air kinetic energy into mechanical motion. The present application does not limit this.

[0025] From the above - mentioned technical solutions, it can be seen that for the pneumatic wave power generation and wave - dissipating device provided by the present application, the floating cabin structure 10 can float on the sea surface, and a part of the cavities 31 and 32 is located below the sea surface and another part is located above the sea surface. Figure 1Below the wavy line is below the sea surface, and above the wavy line is above the sea surface. The wave energy is captured by the water inlets 41 and 42. The waves drive the air movement in the cavities 31 and 32, accompanied by the compression and expansion of the air, thereby driving the air turbines 20 provided at the air ports 51 and 52 to rotate, realizing the conversion of wave energy into air kinetic energy and air kinetic energy into mechanical energy, and then driving the generator to generate electricity. In this embodiment, a pneumatic wave power generation and wave dissipation device is formed by combining a floating breakwater with wave energy generation, which is expected to convert wave energy while blocking waves and use the absorption of wave energy to hinder the continuous propagation of waves. While capturing wave energy, the pneumatic wave power generation and wave dissipation device will also reduce the transmission coefficient of waves and reduce the wave height on the leeward side, thereby protecting other natural or man-made structures on the leeward side.

[0026] In some alternative embodiments, the cavities 31 and 32 include a first cavity 31 and a second cavity 32 adjacent to the first cavity 31, and at least part of the first cavity 31 and the second cavity 32 are separated from each other.

[0027] Correspondingly, the plurality of water inlets 41 and 42 include a first water inlet 41 and a second water inlet 42. The first water inlet 41 is communicated with the first cavity 31, and the second water inlet 42 is communicated with the second cavity 32. The plurality of air ports 51 and 52 include a first air port 51 and a second air port 52. The first air port 51 is communicated with the first cavity 31, and the second air port 52 is communicated with the second cavity 32. The air turbines 20 are arranged corresponding to the first air port 51 and the second air port 52.

[0028] It should be noted that a part of the first cavity 31 and the second cavity 32 is below the sea surface, and the other part is above the sea surface. The parts of the first cavity 31 and the second cavity 32 corresponding to the first water inlet 41 and the second water inlet 42 are separated from each other. The parts of the first cavity 31 and the second cavity 32 corresponding to the first air port 51 and the second air port 52 may be separated from each other or communicated with each other. That is, the parts of the first cavity 31 and the second cavity 32 below the sea surface are separated from each other, and the parts above the sea surface may be separated from each other or communicated with each other. In this way, the wave energy can be captured respectively by the first water inlet 41 and the second water inlet 42. The waves drive the air movement in the first cavity 31 and the second cavity 32, realizing the conversion of wave energy into air kinetic energy, accompanied by the compression and expansion of the air, thereby driving the air turbines 20 provided at the first air port 51 and the second air port 52 to rotate, realizing the conversion of air kinetic energy into mechanical energy. In this way, the capture of waves and the conversion of mechanical energy are realized through two paths, and the effects of wave dissipation and power generation are better.

[0029] In some alternative embodiments, the first cavity 31 includes a first flow channel cavity 311 and a first air chamber 312 communicating with the first flow channel cavity 311, and the first air chamber 312 is located above the first flow channel cavity 311. The first water inlet 41 communicates with the first flow channel cavity 311, and the first air duct opening 51 communicates with the first air chamber 312. The second cavity 32 includes a second flow channel cavity 321 and a second air chamber 322 communicating with the second flow channel cavity 321, and the second air chamber 322 is located above the second flow channel cavity 321; the second water inlet 42 communicates with the second flow channel cavity 321, and the second air duct opening 52 communicates with the second air chamber 322. The first flow channel cavity 311 and the second flow channel cavity 321 are located below the sea surface and are separated from each other. The first air chamber 312 and the second air chamber 322 are located above the sea surface and can be separated from each other or communicate with each other. Both the first air chamber 312 and the second air chamber 322 communicate with the atmosphere through an air turbine.

[0030] With the above arrangement, after the wave energy is captured by the first water inlet 41, waves are generated in the first flow channel cavity 311, driving the air movement in the first air chamber 312, realizing the conversion of wave energy into air kinetic energy. Along with the compression and expansion of the air, the air turbine 20 provided at the first air duct opening 51 is driven to rotate, realizing the conversion of air kinetic energy into mechanical energy. After the wave energy is captured by the second water inlet 42, waves are generated in the second flow channel cavity 321, driving the air movement in the second air chamber 322, realizing the conversion of wave energy into air kinetic energy. Along with the compression and expansion of the air, the air turbine 20 provided at the second air duct opening 52 is driven to rotate, realizing the conversion of air kinetic energy into mechanical energy. In this way, the capture of waves and the conversion of mechanical energy are achieved through two paths, and the wave dissipation and power generation effects are better.

[0031] In the example shown in the figure, the first air chamber 312 is separated from the second air chamber 322, and the first air duct opening 51 is separated from the second air duct opening 52. There are two air turbines 20, which are respectively provided at the first air duct opening 51 and the second air duct opening 52. In other examples, the first air chamber 312 and the second air chamber 322 may also be connected, that is, the first air duct opening 51 is connected to the second air duct opening 52, and there is one air turbine 20, which is arranged corresponding to the first air duct opening 51 and the second air duct opening 52.

[0032] Optionally, the first water inlet 41 and the second water inlet 42 are arranged back to back. The first water inlet 41 is located on the wave-facing side of the floating cabin structure 10, and the second water inlet 42 is located on the wave-back side of the floating cabin structure 10. In this way, the water bodies on the wave-facing side and the wave-back side can be captured by the pneumatic wave power generation and wave dissipation device from two opposite directions through the first water inlet 41 and the second water inlet 42 respectively. After the water bodies enter and exit the first flow channel cavity 311 and the second flow channel cavity 321 respectively, they push the water surfaces of the first air chamber 312 and the second air chamber 322 to oscillate, and then push and squeeze the air in the air chambers, realizing the conversion of wave energy into air kinetic energy, and improving the efficiency of capturing wave energy and converting wave energy into air kinetic energy.

[0033] In some alternative embodiments, the floating cabin structure 10 includes a first cabin body 11 and a second cabin body 12 adjacent to the first cabin body 11. The first cabin body 11 and the second cabin body 12 can float on the sea surface. The first cabin body 11 has the first cavity 31 inside, the first water inlet 41 is provided on the side of the first cabin body 11, and the first air duct opening 51 is provided on the top of the first cabin body 11. The second cabin body 12 has the second cavity 32 inside, the second water inlet 42 is provided on the side of the second cabin body 12, and the second air duct opening 52 is provided on the top of the first cabin body 11.

[0034] Furthermore, the pneumatic wave power generation and wave dissipation device further includes a first floating cabin 61 and a second floating cabin 62. The first floating cabin 61 is arranged on the first cabin body 11. The first floating cabin 61 and the second floating cabin 62 can be realized by any floating cabin that can provide buoyancy, such as a box-shaped floating cabin, and are used to provide buoyancy for the first cabin body 11 and the second cabin body 12.

[0035] In some alternative embodiments, both the first cabin body 11 and the second cabin body 12 can be L-shaped. Correspondingly, both the first cavity 31 and the second cavity 32 are L-shaped, so that the water body can enter the floating cabin structure from below. After the wave energy is converted into air kinetic energy, the air kinetic energy is converted into mechanical energy through the air turbine located at the top of the floating cabin structure. Optionally, the second floating cabin 62 is arranged at the L-shaped corner position of the first cabin body 11, and the bottom surface and the side surface on the wave-back side of the first floating cabin 61 are surrounded by the L-shaped corner of the first cabin body 11. The second floating cabin 62 is arranged at the L-shaped corner position of the second cabin body 12, and the bottom surface and the side surface on the wave-back side of the second floating cabin 12 are surrounded by the L-shaped corner of the second cabin body 12.

[0036] The bottom plate 13 of the first cabin 11 and the bottom plate 14 of the second cabin 12 may not be on the same horizontal plane. That is, the opening sizes of the first water inlet 41 and the second water inlet 42 may be different. The height positions of the bottom plates of the two cabins can be set according to the actual wave conditions to control the opening sizes of the two water inlets. In this embodiment, the bottom plate 13 of the first cabin 11 is higher than the bottom plate 14 of the second cabin 12. In other embodiments, the bottom plate of the first cabin 11 is lower than the bottom plate of the second cabin. Or, the bottom plate of the first cabin 11 and the bottom plate of the second cabin 12 are on the same plane.

[0037] In addition, one side of the first cabin 11 facing away from the first water inlet 41 and one side of the second cabin 12 facing away from the second water inlet 42 can share a side plate 15. The first flow channel cavity 311 and the second flow channel cavity 321 are separated by the side plate 15. In one case, when the top of the side plate 15 is close to the tops of the first floating cabin 61 and the second floating cabin 62 and does not extend to the heights of the first air chamber 312 and the second air chamber 322, the first air chamber 312 and the second air chamber 322 can be interconnected. When the top of the side plate 15 extends upward to be higher than the tops of the first floating cabin 61 and the second floating cabin 62, that is, extends to the heights where the first air chamber 312 and the second air chamber 322 are located, the first air chamber 312 and the second air chamber 322 can be separated from each other.

[0038] In some alternative embodiments, the pneumatic wave power generation and wave dissipation device further includes a mooring member 70 disposed on the floating cabin structure 10. The mooring member 70 is used to adjust and / or restrict the position of the floating cabin structure 10 so that the floating cabin structure 10 is located within a preset area. Optionally, the mooring member 70 can be an anchor body, and the number is not limited. It can be disposed at the bottom or side of the floating cabin structure 10. The mooring member 70 is used to restrict the pneumatic wave power generation and wave dissipation device within the preset area. Or rather, the mooring member 70 can position the pneumatic wave power generation and wave dissipation device to prevent it from moving out of the preset area. Or when the pneumatic wave power generation and wave dissipation device moves out of the preset area, the mooring member 70 can adjust the tension of each cable to move the pneumatic wave power generation and wave dissipation device into the preset area.

[0039] The working principle of the pneumatic wave power generation and wave dissipation device provided in this embodiment is as follows:

[0040] Under the action of waves, the pneumatic wave power generation and wave dissipation device will have relative movement with the water body. The water bodies on the wave-facing side and the wave-back side enter and exit the first flow channel cavity 311 and the second flow channel cavity 321 through the first water inlet 41 and the second water inlet 42, driving the air movement in the first air chamber 312 and the second air chamber 322. At the same time, with the compression and expansion of the air, the air turbines 20 at the first air duct opening 51 and the second air duct opening 52 are driven to rotate, realizing the conversion of wave energy into air kinetic energy and air kinetic energy into mechanical energy, and then driving the generator to generate electricity. The free inflow and outflow of the water bodies on the wave-facing side and the wave-back side are realized, improving the capture of wave energy.

[0041] Embodiment 2:

[0042] This embodiment utilizes the capture of wave energy by the pneumatic wave power generation and wave dissipation device and the reflection of waves to improve the wave dissipation performance and reduce the water surface fluctuation downstream. Based on the potential flow theory, a mathematical model of the interaction between the freely movable pneumatic wave power generation and wave dissipation device and waves is established. After considering the wave diffraction and radiation effects, the wave energy capture performance and wave dissipation performance of the pneumatic wave power generation and wave dissipation device are analyzed.

[0043] Participate Figure 2 As shown, the pneumatic wave power generation and wave dissipation device provided in this embodiment can achieve ultra-wideband high efficiency with a capture width ratio of not less than 0.6 when the wave period is between 3.3 s and 9.65 s. It should be noted that the definition of the capture width ratio is the ratio of the air kinetic energy generated by the pneumatic wave power generation and wave dissipation device to the incident wave energy within the width of the pneumatic wave power generation and wave dissipation device, that is, the proportion of the incident wave energy within the width of the pneumatic wave power generation and wave dissipation device that is converted into air kinetic energy.

[0044] See Figure 3 As shown, the pneumatic wave power generation and wave dissipation device provided in this embodiment can achieve ultra-wideband low transmission and high wave dissipation with a wave transmission coefficient not exceeding 0.5 when the wave period is less than 9.65 s. It should be noted that the transmission coefficient is the ratio of the wave height of the transmitted wave after wave dissipation to the wave height of the incident wave.

[0045] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. A pneumatic wave power generation and wave elimination device, characterized in that: The device comprises a floating cabin structure (10) and an air turbine (20); the floating cabin structure (10) comprises a first cabin (11) and a second cabin (12) arranged adjacent thereto; a first floating cabin (61) is arranged outside the first cabin (11), and a second floating cabin (62) is arranged outside the second cabin (12); the first cabin (11) and the second cabin (12) are capable of floating on the sea surface; the air turbine (20) is arranged above the first cabin (11) and the second cabin (12), respectively; the first cabin (11) comprises a first cavity (31) arranged inside, a first water inlet (41) connected to the first cavity (31) and located outside the bottom of the cabin, and a first airway port (51) connected to the cavity and located at the top of the cabin, as well as a first bottom plate (13) located at the bottom of the cabin; the second cabin (12) comprises a second cavity (32) arranged inside ), a second water inlet (42) communicating with the second cavity (32) and located on the outside of the bottom of the hull, a second air duct opening (52) communicating with the second cavity (32) and located on the top of the hull, and a second bottom plate (14) located at the bottom of the hull; the air turbine (20) is respectively arranged at the first air duct opening (51) and the second air duct opening (52) for converting the pneumatic energy generated by the movement of air in the first cavity (31) and the second cavity (32) into mechanical energy; the first cavity (31) and the second cavity (32) are at least partially separated from each other at adjacent positions, the first water inlet (41) and the second water inlet (42) are separated from each other, and the first air duct opening (51) and the second air duct opening (52) are separated from each other or communicated with each other, that is, the first cavity (31) and the second cavity (32) are separated from each other in parts below the sea surface, and separated from each other in parts above the sea surface or communicated with each other.

2. The pneumatic wave power generation and wave elimination device according to claim 1, characterized in that: The first cabin (11) and the second cabin (12) are both L-shaped structures, and the first cavity (31) and the second cavity (32) are also L-shaped. Water enters the floating cabin structure (10) from below, and after wave energy is converted into aerodynamic energy, the aerodynamic energy is converted into mechanical energy through the air turbine (20).

3. The pneumatic wave power generation and wave elimination device according to claim 2, characterized in that: The first buoyancy chamber (61) is arranged at an L-shaped corner position of the first cabin (11), and the bottom surface and the side surface on the side facing away from the waves of the first buoyancy chamber (61) are surrounded by the L-shaped corner position of the first cabin (11); the second buoyancy chamber (62) is arranged at an L-shaped corner position of the second cabin (12), and the bottom surface and the side surface on the side facing away from the waves of the second buoyancy chamber (62) are surrounded by the L-shaped corner position of the second cabin (12).

4. The pneumatic wave power generation and wave elimination device according to claim 1, characterized in that: The horizontal heights of the first bottom plate (13) of the first cabin (11) and the second bottom plate (14) of the second cabin (12) are set to the same horizontal plane or horizontal planes of different heights, that is, the height positions of the bottom plates of the two cabins are set according to actual wave conditions to control the opening sizes of the first water inlet (41) and the second water inlet (42).

5. The pneumatic wave power generation and wave elimination device according to claim 1, characterized in that: The first cavity (31) comprises a first flow channel cavity (311) and a first air chamber (312) connected thereto, the first air chamber (312) being located above the first flow channel cavity (311), the first water inlet (41) being connected to the first flow channel cavity (311), and the first air channel port (51) being connected to the first air chamber (312); the second cavity (32) comprises a second flow channel cavity (321) and a second air chamber (322) connected thereto, the second air chamber (322) being located above the second flow channel cavity (321); the second water inlet (42) being connected to the second flow channel cavity (321), and the second air channel port (52) being connected to the second air chamber (322); the first flow channel cavity (311) and the second flow channel cavity (321) being located below the sea surface and being separated from each other, the first air chamber (312) and the second air chamber (322) being located below the sea surface and being separated from each other. Above the sea surface, the first air chamber (312) and the second air chamber (322) are separated from or connected to each other, and are both connected to the atmosphere through an air turbine (20); after the wave energy is captured by the first water inlet (41), the waves generate fluctuations in the first flow channel cavity (311), which drive the air in the first air chamber (312) to move, thereby realizing the transformation of wave energy into aerokinetic energy, accompanied by the compression and expansion of the air, thereby driving the air turbine (20) arranged at the first air channel port (51) to rotate, thereby realizing the transformation of aerokinetic energy into mechanical energy; after the wave energy is captured by the second water inlet (42), the waves generate fluctuations in the second flow channel cavity (321), which drive the air in the second air chamber (322) to move, thereby realizing the transformation of wave energy into aerokinetic energy, accompanied by the compression and expansion of the air, thereby driving the air turbine (20) arranged at the second air channel port (52) to rotate, thereby realizing the transformation of aerokinetic energy into mechanical energy.

6. The pneumatic wave power generation and wave elimination device according to claim 5, characterized in that: The first air chamber (312) and the second air chamber (322) are separated from each other, the first air duct opening (51) and the second air duct opening (52) are separated from each other, and two air turbines are provided, respectively provided at the first air duct opening (51) and the second air duct opening (52); or the first air chamber (312) and the second air chamber (322) are connected, that is, the first air duct opening (51) and the second air duct opening (52) are connected, and one air turbine is provided.

7. The pneumatic wave power generation and wave elimination device according to claim 5, characterized in that: The first water inlet (41) and the second water inlet (42) are arranged back to back, the first water inlet (41) is located on the wave-facing side of the buoyancy structure (10), and the second water inlet (42) is located on the wave-back side of the buoyancy structure (10); water bodies on the wave-facing side and the wave-back side are captured from two back-to-back directions through the first water inlet (41) and the second water inlet (42), respectively; after the water bodies enter and exit the first flow channel cavity (311) and the second flow channel cavity (321), they push the water surface of the first air chamber (312) and the second air chamber (322) to oscillate, thereby pushing and squeezing the air in the air chambers, thereby realizing the conversion of wave energy into aerokinetic energy.

8. The pneumatic wave power generation and wave elimination device according to claim 5, characterized in that: The first cabin body (11) and the second cabin body (12) share a side plate (15), and the first flow channel cavity (311) and the second flow channel cavity (321) are separated by the side plate (15); when the top of the side plate (15) is close to the top of the first floating cabin (61) and the second floating cabin (62), and does not extend to the height of the first air chamber (312) and the second air chamber (322), the first air chamber (312) and the second air chamber (322) are connected to each other; when the top of the side plate (15) extends upward to a height higher than the top of the first floating cabin (61) and the second floating cabin (62), that is, extends to the height where the first air chamber (312) and the second air chamber (322) are located, the first air chamber (312) and the second air chamber (322) are separated from each other.

9. The pneumatic wave power generation and wave elimination device according to claim 1, characterized in that: The device further comprises a mooring member (70), wherein the mooring member (70) is arranged at the bottom or side of the buoyancy structure (10) and is used to adjust and / or constrain the position of the buoyancy structure (10) so that the buoyancy structure (10) is located in a preset area.

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