Pneumatic wave power generation wave dissipation device

Abstract

The invention provides a pneumatic wave power generation wave dissipation device, and belongs to the technical field of wave power generation. The pneumatic wave power generation and wave dissipation device comprises a buoyancy chamber structure, the interior of the buoyancy chamber structure is provided with a cavity, the side portion of the buoyancy chamber structure is provided with a plurality of water inlets communicating with the cavity, and the water inlets are used for capturing waves to push air in the cavity to move; and a plurality of air channel openings communicated with the cavity are formed in the top of the buoyancy chamber structure. And the air turbine is arranged at the air channel opening, and the air turbine is used for converting pneumatic energy generated by air movement in the cavity into mechanical energy. The water inlet is used for capturing wave energy, waves push air in the cavity to move, conversion from the wave energy to pneumatic energy is achieved, meanwhile, along with compression and expansion of the air, the air turbine arranged at the air channel opening is driven to rotate, conversion from the pneumatic energy to mechanical energy is achieved, and then the generator is driven to generate electricity.

Description

Technical Field

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

[0002] To develop marine resources and 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 to local conditions and fully develop the inexhaustible ocean energy. Wave energy is the most widely distributed renewable clean energy in ocean energy. If wave energy can be used efficiently and reliably to generate electricity, the above-mentioned power shortage problem can be effectively solved. However, 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 coast to resist the impact of waves on nearshore artificial structures. With the human thirst for marine resources, the pace of moving towards the deep sea is also accelerating, and floating wave-breaking devices have become an important choice for protecting various offshore marine equipment. Summary of the invention

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

[0004] In order to achieve the above object, the specific technical solution adopted by the present invention is: A pneumatic wave power generation and wave dissipation device comprises a floating cabin structure and an air turbine; the floating cabin structure comprises a first cabin body and a second cabin body arranged adjacent to the first cabin body, a first floating cabin is arranged on the outer side of the first cabin body, and a second floating cabin is arranged on the outer side of the second cabin body, and the first cabin body and the second cabin body can float on the sea surface; the air turbine is arranged above the first cabin body and the second cabin body respectively.

[0005] Further, the first cabin includes a first cavity arranged inside, a first water inlet connected to the cavity and located on the outside of the bottom of the cabin, a first air duct port connected to the cavity and located on the top of the cabin, 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 connected to the cavity and located on the outside of the bottom of the cabin, a second air duct port connected to the cavity and located on the top of the cabin, and a second bottom plate located at the bottom of the cabin; the air turbine is respectively arranged at the first air duct port and the second air duct port, for converting the aerokinetic energy generated by the movement of air in the first cavity and the second cavity into mechanical energy; the adjacent positions of the first cavity and the second cavity are at least partially separated from each other, the first water inlet and the second water inlet are separated from each other, and the first air duct port and the second air duct port are separated from each other or connected to each other, that is, the parts of the first cavity and the second cavity located below the sea surface are separated from each other, and the parts located above the sea surface are separated from each other or connected to each other.

[0006] Furthermore, the first cabin and the second cabin are both L-shaped structures, and the first cavity and the second cavity are also L-shaped. Water enters the floating cabin structure from below, and after wave energy is converted into aerodynamic energy, the aerodynamic energy is converted into mechanical energy through an air turbine.

[0007] Furthermore, the first floating tank is arranged at the L-shaped corner position of the first cabin, and the bottom surface and the side surface on the back-wave side of the first floating tank are surrounded by the L-shaped corner of the first cabin; the second floating tank is arranged at the L-shaped corner position of the second cabin, and the bottom surface and the side surface on the back-wave side of the second floating tank are surrounded by the L-shaped corner of the second cabin.

[0008] Furthermore, 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 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 and the second water inlet.

[0009] Furthermore, the first cavity includes a first flow channel cavity and a first air chamber connected thereto, the first air chamber is located above the first flow channel cavity, the first water inlet is connected to the first flow channel cavity, and the first air channel port is connected to the first air chamber; the second cavity includes a second flow channel cavity and a second air chamber connected thereto, the second air chamber is located above the second flow channel cavity; the second water inlet is connected to the second flow channel cavity, and the second air channel port is connected to the second air chamber; the first flow channel cavity and the second flow channel cavity are located below the sea surface, separated from each other, the first air chamber and the second air chamber are located above the sea surface, separated from each other or connected to each other, the first air chamber and The second air chamber is connected to 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, which promotes the movement of air in the first air chamber, thereby realizing the transformation of wave energy into aerokinetic energy, accompanied by the compression and expansion of air, thereby driving the air turbine arranged at the first air channel port to rotate, thereby realizing the transformation of aerokinetic 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, which promotes the movement of air in the second air chamber, thereby realizing the transformation of wave energy into aerokinetic energy, accompanied by the compression and expansion of air, thereby driving the air turbine arranged at the second air channel port to rotate, thereby realizing the transformation of aerokinetic energy into mechanical energy.

[0010] Furthermore, the first air chamber and the second air chamber are separated from each other, the first air duct opening and the second air duct opening are separated from each other, and two air turbines are provided, which are respectively provided at the first air duct opening and the second air duct opening; or the first air chamber and the second air chamber are connected, that is, the first air duct opening and the second air duct opening are connected, and one air turbine is provided.

[0011] 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-receiving side of the floating cabin structure; water on the wave-facing side and the wave-receiving side is captured through the first water inlet and the second water inlet from two back-to-back directions, respectively, and after the water enters and exits the first flow channel cavity and the second flow channel cavity respectively, it pushes the water surface of the first air chamber and the second air chamber to oscillate, thereby pushing and squeezing the air in the air chamber, thereby realizing the conversion of wave energy into aerokinetic energy.

[0012] Furthermore, the first cabin body and the second cabin body share a side panel, which separates the first flow channel cavity and the second flow channel cavity; when the top of the side panel is close to the top of the first floating cabin and the second floating cabin, and has not extended to the height 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 panel extends upward to be higher than the top of the first floating cabin and the second floating cabin, that is, extends to the height 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.

[0013] Furthermore, the device also includes a mooring member, which is arranged at the bottom or side of the buoyancy structure and is used to adjust and / or constrain the position of the buoyancy structure so that the buoyancy structure is located in a preset area.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The pneumatic wave power generation and wave absorbing device provided by the present invention generates 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 causes the air in the first / second air chamber to reciprocate, thereby realizing the conversion of wave energy into pneumatic energy. At the same time, accompanied by the compression and expansion of air, the air turbine arranged at the first / second airway port is driven to rotate, realizing the conversion of pneumatic energy into mechanical energy, and then driving the generator to generate electricity; at the same time, the pneumatic power generation and wave absorbing device is used to capture wave energy and reflect waves, thereby enhancing the wave absorbing performance and reducing the fluctuation of the downstream water surface.

[0015] It has been verified in practice that the present invention can improve the wave energy capture width ratio, broaden the frequency response width and enhance the wave elimination effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] 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.

[0018] Figure 3 This is a schematic diagram of the transmission coefficient of the device changing with the wave period.

[0019] Among them, 10-floating chamber structure, 20-air turbine, 11-first cabin, 12-second cabin, 61-first floating chamber, 62-second floating chamber, 31-first cavity, 41-first water inlet, 51-first air duct outlet, 13-first bottom plate, 32-second cavity, 42-second water inlet, 52-second air duct outlet, 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. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, and to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0021] Embodiment 1: See also Figure 1 As shown, the embodiment of the present application provides a pneumatic wave power generation and wave elimination device, including: a buoyancy structure 10 and an air turbine 20. The buoyancy structure 10 has cavities 31 and 32 inside, and the side of the buoyancy structure 10 is provided with a plurality of water inlets 41 and 42 connected to the cavities 31 and 32, and the water inlets 41 and 42 are used to capture waves to promote the movement of air in the cavities 31 and 32; the top of the buoyancy structure 10 is provided with a plurality of airway openings 51 and 52 connected to the cavities 31 and 32. The air turbine 20 is arranged at the airway openings 51 and 52, and the air turbine 20 is used to convert the pneumatic 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 impact air turbine. Of course, the air turbine 20 can also be implemented by other air turbines, as long as it can realize the conversion of pneumatic energy into mechanical motion, and the present application does not limit this.

[0022] It can be seen from the above technical solution that the pneumatic wave power generation and wave dissipation device provided in the present application has a buoyancy structure 10 that can float on the sea surface, with a portion of the cavities 31 and 32 located below the sea surface and the other portion located above the sea surface. Figure 1Below the middle wave line is below the sea surface, and above the wave line is above the sea surface. The water inlets 41 and 42 are used to capture wave energy. The waves push the air in the cavities 31 and 32 to move, accompanied by the compression and expansion of the air, thereby driving the air turbine 20 provided at the airway openings 51 and 52 to rotate, realizing the conversion of wave energy into aerokinetic energy and aerokinetic energy into mechanical energy, thereby driving the generator to generate electricity. This embodiment combines a floating breakwater with wave energy generation to form a pneumatic wave power generation and wave extinguishing device, which is expected to convert wave energy while blocking waves, and use the absorption of wave energy to hinder the continued propagation of waves. While capturing wave energy, the pneumatic wave power generation and wave extinguishing device will also reduce the transmission coefficient of the waves, reduce the wave height on the back side of the waves, and thereby protect other natural or man-made structures on the back side of the waves.

[0023] In some optional embodiments, the cavities 31 , 32 include a first cavity 31 and a second cavity 32 disposed adjacent to the first cavity 31 , and at least parts of the first cavity 31 and the second cavity 32 are separated from each other.

[0024] Correspondingly, the multiple water inlets 41, 42 include a first water inlet 41 and a second water inlet 42, wherein the first water inlet 41 is in communication with the first cavity 31, and the second water inlet 42 is in communication with the second cavity 32. The multiple airway ports 51, 52 include a first airway port 51 and a second airway port 52, wherein the first airway port 51 is in communication with the first cavity 31, and the second airway port 52 is in communication with the second cavity 32. The air turbine 20 is arranged corresponding to the first airway port 51 and the second airway port 52.

[0025] It should be noted that a portion of the first cavity 31 and the second cavity 32 is located below the sea surface, and the other portion is located above the sea surface. The portions 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, and the portions of the first cavity 31 and the second cavity 32 corresponding to the first airway port 51 and the second airway port 52 can be separated from each other or can be interconnected. That is, the portions of the first cavity 31 and the second cavity 32 located below the sea surface are separated from each other, and the portions located above the sea surface can be separated from each other or can be interconnected. In this way, the first water inlet 41 and the second water inlet 42 can be used to capture wave energy respectively, and the waves drive the air in the first cavity 31 and the second cavity 32 to move, 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 airway port 51 and the second airway port 52 to rotate, realizing the transformation of aerokinetic energy into mechanical energy. In this way, the capture of waves and the transformation of mechanical energy are realized through two paths, and the effects of wave elimination and power generation are better.

[0026] In some optional 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 is communicated with the first flow channel cavity 311, and the first air channel port 51 is communicated 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 is communicated with the second flow channel cavity 321, and the second air channel port 52 is communicated 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 communicated with each other. The first air chamber 312 and the second air chamber 322 are both communicated with the atmosphere through an air turbine.

[0027] Through the above-mentioned arrangement, after the wave energy is captured by the first water inlet 41, the wave generates fluctuations in the first flow channel cavity 311, which drives the air movement in the first air chamber 312, and realizes the transformation of wave energy into aerokinetic energy. With the compression and expansion of the air, the air turbine 20 provided at the first air channel port 51 is driven to rotate, and the transformation of aerokinetic energy into mechanical energy is realized. After the wave energy is captured by the second water inlet 42, the wave generates fluctuations in the second flow channel cavity 321, which drives the air movement in the second air chamber 322, and realizes the transformation of wave energy into aerokinetic energy. With the compression and expansion of the air, the air turbine 20 provided at the second air channel port 52 is driven to rotate, and the transformation of aerokinetic energy into mechanical energy is realized. In this way, the capture of waves and the transformation of mechanical energy are realized through two paths, and the effects of wave elimination and power generation are better.

[0028] In the example shown in the figure, the first air chamber 312 and the second air chamber 322 are separated from each other, and the first airway opening 51 and the second airway opening 52 are separated from each other. There are two air turbines 20, each of which is provided with the first airway opening 51 and the second airway opening 52. In other examples, the first air chamber 312 and the second air chamber 322 may also be connected, that is, the first airway opening 51 and the second airway opening 52 are connected, and there is one air turbine 20, which is provided corresponding to the first airway opening 51 and the second airway opening 52.

[0029] 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 buoyancy structure 10, and the second water inlet 42 is located on the wave-receiving side of the buoyancy structure 10. In this way, the water bodies on the wave-facing side and the wave-receiving side can be captured by the pneumatic wave power generation and wave-eliminating device 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, respectively, 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, realizing the conversion of wave energy into pneumatic energy, and improving the efficiency of capturing wave energy and converting wave energy into pneumatic energy.

[0030] In some optional embodiments, the floating pod structure 10 includes a first pod 11 and a second pod 12 disposed adjacent to the first pod 11, and the first pod 11 and the second pod 12 can float on the sea surface. The first pod 11 has the first cavity 31 inside, the first water inlet 41 is disposed on the side of the first pod 11, and the first airway port 51 is disposed on the top of the first pod 11. The second pod 12 has the second cavity 32 inside, the second water inlet 42 is disposed on the side of the second pod 12, and the second airway port 52 is disposed on the top of the first pod 11.

[0031] Furthermore, the pneumatic wave power generation and wave elimination device further includes a first buoyancy chamber 61 and a second buoyancy chamber 62, wherein the first buoyancy chamber 61 is arranged on the first cabin 11. The first buoyancy chamber 61 and the second buoyancy chamber 62 can be implemented by any buoyancy chamber that can provide buoyancy, such as a box-type buoyancy chamber, for providing buoyancy to the first cabin 11 and the second cabin 12.

[0032] In some optional embodiments, the first cabin 11 and the second cabin 12 may both be L-shaped, and accordingly, the first cavity 31 and the second cavity 32 may both be L-shaped, so that water can enter the floating cabin structure from below, and after the wave energy is converted into aerokinetic energy, the aerokinetic energy is converted into mechanical energy through the air turbine located at the top of the floating cabin structure. Optionally, the first floating cabin 62 is arranged at the L-shaped corner position of the first cabin 11, and the bottom surface and the side surface on the back-wave side of the first floating cabin 61 are surrounded by the L-shaped corner of the first cabin 11. The second floating cabin 62 is arranged at the L-shaped corner position of the second cabin 12, and the bottom surface and the side surface on the back-wave side of the second floating cabin 12 are surrounded by the L-shaped corner of the second cabin 12.

[0033] The bottom plate 13 of the first cabin 11 and the bottom plate 14 of the second cabin 12 may not be in the same horizontal plane, that is, the opening sizes of the first water inlet 41 and the second water inlet 42 may be different, and 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. Alternatively, the bottom plate of the first cabin 11 and the bottom plate of the second cabin 12 are in the same plane.

[0034] In addition, the side of the first cabin body 11 facing away from the first water inlet 41 and the side of the second cabin body 12 facing away from the second water inlet 42 may share a side plate 15, and the first flow channel cavity 311 and the second flow channel cavity 321 may be separated by the side plate 15. In one case, 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 may be interconnected. 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 may be separated from each other.

[0035] In some optional embodiments, the pneumatic wave power generation and wave absorbing device further includes a mooring 70, which is arranged on the buoyancy structure 10, and the mooring 70 is used to adjust and / or constrain the position of the buoyancy structure 10 so that the buoyancy structure 10 is located within a preset area. Optionally, the mooring 70 may be an anchor body, and the number is not limited. It may be arranged on the bottom or side of the buoyancy structure 10, and the mooring 70 is used to constrain the pneumatic wave power generation and wave absorbing device within a preset area. In other words, the mooring 70 can position the pneumatic wave power generation and wave absorbing device to prevent the pneumatic wave power generation and wave absorbing device from moving out of the preset area. Or when the pneumatic wave power generation and wave absorbing device moves out of the preset area, the mooring 70 can adjust the tension of each cable to move the pneumatic wave power generation and wave absorbing device into the preset area.

[0036] The working principle of the pneumatic wave power generation and wave elimination device provided in this embodiment is as follows: Under the action of waves, the pneumatic wave power generation and wave elimination device will move relative to 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 after passing through the first water inlet 41 and the second water inlet 42, pushing the air in the first air chamber 312 and the second air chamber 322 to move, accompanied by the compression and expansion of the air, thereby driving the air turbine 20 of the first air channel port 51 and the second air channel port 52 to rotate, realizing the conversion of wave energy into aerokinetic energy and aerokinetic energy into mechanical energy, and then driving the generator to generate electricity. The free inflow and outflow of water bodies on the wave-facing side and the wave-back side is realized, and the capture of wave energy is improved.

[0037] Embodiment 2: This embodiment utilizes the capture of wave energy and reflection of waves by the pneumatic wave power generation and wave elimination device to improve the wave elimination performance and reduce the downstream water surface fluctuations. Based on the potential flow theory, a mathematical model of the interaction between the freely movable pneumatic wave power generation and wave elimination device and waves is established. After considering the wave diffraction and radiation effects, the wave energy capture performance and wave elimination performance of the pneumatic wave power generation and wave elimination device are analyzed.

[0038] join Figure 2 As shown, the pneumatic wave power generation and wave elimination 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 3.3s and 9.65s. It should be noted that the capture width ratio is defined as the ratio of the aerokinetic energy generated by the pneumatic wave power generation and wave elimination device to the incident wave energy within the width of the pneumatic wave power generation and wave elimination device, that is, the ratio of the incident wave energy within the width of the pneumatic wave power generation and wave elimination device converted into aerokinetic energy.

[0039] See also Figure 3 As shown, the pneumatic wave power generation and wave elimination device provided in this embodiment can achieve ultra-wideband low transmission and high wave elimination with a wave transmission coefficient not exceeding 0.5 when the wave period is less than 9.65s. It should be noted that the transmission coefficient is the ratio of the wave height of the transmitted wave after wave elimination to the wave height of the incident wave.

[0040] 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 causing conflicts. 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 substitutions, improvements, etc. made within the spirit and principles of this application should be included in 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 to the first cabin; a first floating cabin (61) is arranged outside the first cabin (11); 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; and the air turbine (20) is arranged above the first cabin (11) and the second cabin (12), respectively.

2. The pneumatic wave power generation and wave elimination device according to claim 1, characterized in that: The first cabin (11) comprises a first cavity (31) arranged inside, a first water inlet (41) connected to the cavity and located outside the bottom of the cabin, a first air duct opening (51) connected to the cavity and located at the top of the cabin, and 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) connected to the cavity and located outside the bottom of the cabin, a second air duct opening (52) connected to the cavity and located at the top of the cabin, and a second bottom plate (14) located at the bottom of the cabin; the air turbine (20 ) are respectively arranged at the first airway opening (51) and the second airway opening (52), and are used to convert the aerodynamic 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 airway opening (51) and the second airway opening (52) are separated from each other or interconnected, that is, the first cavity (31) and the second cavity (32) are separated from each other in parts below the sea surface, and are separated from each other in parts above the sea surface or interconnected.

3. The pneumatic wave power generation and wave elimination device according to claim 2, 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).

4. The pneumatic wave power generation and wave elimination device according to claim 3, 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).

5. The pneumatic wave power generation and wave elimination device according to claim 2, 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).

6. The pneumatic wave power generation and wave elimination device according to claim 2, 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.

7. The pneumatic wave power generation and wave elimination device according to claim 6, 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.

8. The pneumatic wave power generation and wave elimination device according to claim 6, 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.

9. The pneumatic wave power generation and wave elimination device according to claim 6, 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.

10. 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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