High-reliability ocean wind energy and wave energy combined power generation buoy and method

Abstract

The invention relates to the technical field of power generation buoys, in particular to a high-reliability ocean wind energy and wave energy combined power generation buoy and method.The high-reliability ocean wind energy and wave energy combined power generation buoy comprises a floating type draught fan platform and an oscillating water column and wave energy conversion device, a power generation draught fan is arranged on the floating type draught fan platform, and the oscillating water column and wave energy conversion device is arranged in the floating type draught fan platform; the oscillating water column wave energy conversion device comprises a buoy, an air turbine, a pressure reducing valve and a generator, the buoy is a hollow cylinder with a top plate, the air turbine and the pressure reducing valve are installed on the top plate of the buoy, and the generator is arranged in the air turbine. The high-reliability ocean wind energy and wave energy combined power generation buoy is high in reliability and high in survivability in severe weather.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation buoys, and in particular to a highly reliable ocean wind and wave energy combined power generation buoy and method. Background Art

[0002] Ocean energy includes marine renewable energy such as offshore wind energy, offshore photovoltaics, wave energy, and tidal energy. It has the advantages of being renewable, clean, and pollution-free. At present, the ocean wind-wave energy combined power generation buoy that combines offshore wind energy with wave energy is a hot spot in ocean energy applications. Existing marine wind and wave power generation buoys typically feature a floating platform, a wind turbine mounted on the floating platform, and an oscillating water column wave energy conversion device. For example, Patent Publication No. CN108561266A discloses a heave-type combined wave and wind power generation device, Patent Publication No. CN115506962A provides a combined wave and wind power generation device for use on the sea surface, Patent Publication No. CN113027666A discloses a lighthouse for integrated wave and wind power generation, Patent Publication No. CN110397561A discloses a tension-leg wave and wind power generation device and its intelligent vibration control system, and Patent Publication No. CN118148837A provides a floating integrated wave and wind power generation system. Because the entire system floats on the sea surface, these disclosed marine wind and wave power generation systems suffer from poor reliability and susceptibility to severe weather. Summary of the Invention

[0003] In order to overcome the technical defects of the existing technology, the present invention provides a highly reliable ocean wind and wave energy combined power generation buoy and method, which has high reliability and strong survivability in severe weather.

[0004] The technical solution adopted by the present invention is: a highly reliable ocean wind energy and wave energy combined power generation buoy, including a floating wind turbine platform and an oscillating water column wave energy conversion device. The floating wind turbine platform is provided with a power generation wind turbine, and the oscillating water column wave energy conversion device is arranged in the floating wind turbine platform. The oscillating water column wave energy conversion device includes a buoy, an air turbine, a pressure reducing valve and a generator. The buoy is a hollow cylinder with a top plate, and the air turbine and pressure reducing valve are installed on the top plate of the buoy. The air turbine has a built-in generator.

[0005] Preferably, the floating wind turbine platform is in the shape of a triangular prism and has three main pontoons connected as one body, and the three main pontoons are distributed at three edges of the floating wind turbine platform.

[0006] Preferably, three oscillating water column wave energy conversion devices are provided in the floating wind turbine platform.

[0007] Preferably, the power-generating wind turbine is installed on a main buoy.

[0008] Preferably, an air turbine mounting hole is provided on the top plate, and the air turbine is mounted in the air turbine mounting hole.

[0009] A highly reliable ocean wind and wave energy combined power generation method, which uses the above-mentioned highly reliable ocean wind and wave energy combined power generation buoy, comprises the following steps: S1. A floating wind turbine platform is placed on the sea surface. The wind turbine converts wind energy into electrical energy. The oscillating water surface inside the buoy of the wave energy conversion device causes pressure changes inside the buoy. The air turbine converts the pressure changes into kinetic energy for the unidirectional rotation of the air turbine shaft, driving the built-in generator to generate electricity. S2. When a big storm occurs on the sea surface, the oscillating water column wave energy conversion device is set to the survival state, the air turbine is closed, the pressure reducing valve is opened, the damping of the oscillating water column wave energy conversion device is reduced, and air can flow out of and into the air chamber of the buoy freely.

[0010] The beneficial effects of the present invention are as follows: a highly reliable ocean wind energy and wave energy combined power generation buoy of the present invention can be converted into a survival state, specifically, the air turbine is closed, the pressure reducing valve is opened, the damping of the oscillating water column wave energy conversion device is reduced, and air can freely flow in and out of the oscillating water column wave energy conversion device, thereby preventing the entire system from being damaged by large wave impacts. In this way, under severe sea conditions such as large storms, the combined power generation buoy of the present invention can be protected from being destroyed by extremely short sea conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of a highly reliable ocean wind and wave energy combined power generation buoy according to the present invention.

[0012] Figure 2 It is a structural schematic diagram of the oscillating water column wave energy conversion device of the present invention.

[0013] Figure 3 It is a top view of the oscillating water column wave energy conversion device of the present invention.

[0014] Figure 4 This is an exploded view of the oscillating water column wave energy conversion device of the present invention.

[0015] Explanation of the accompanying reference numerals: 1. Oscillating water column wave energy conversion device; 101. buoy; 102. pressure reducing valve; 103. air turbine; 2. floating wind turbine platform. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings: like Figures 1 to 4As shown, this embodiment provides a highly reliable ocean wind and wave energy combined power generation buoy, including a floating wind turbine platform 2 and an oscillating water column wave energy conversion device 1. The floating wind turbine platform 2 is provided with a power generation wind turbine. The oscillating water column wave energy conversion device 1 is arranged inside the floating wind turbine platform 2. The oscillating water column wave energy conversion device 1 includes a buoy 101, an air turbine 103, a pressure reducing valve 102 and a generator. The buoy 101 is a hollow cylinder with a top plate. The air turbine 103 and the pressure reducing valve 102 are mounted on the top plate of the buoy 101. The air turbine 103 has a built-in generator. The power generation principle of the oscillating water column wave energy conversion device 1 is: the up and down oscillation of the water surface in the buoy 101 is converted into pressure changes in the buoy 101. The air turbine 103 of this embodiment is a unidirectional rectifying impulse turbine. The air turbine 103 converts the pressure change into kinetic energy of the unidirectional rotation of the rotating shaft of the air turbine 103, driving the built-in generator to generate electricity. In this embodiment, the floating wind turbine platform 2 is in the shape of a triangular prism and has three main buoys connected as one. The three main buoys are distributed at the three edges of the floating wind turbine platform 2. The oscillating water column wave energy conversion device 1 of this embodiment is completely placed in the floating wind turbine platform 2 without increasing the size of the floating wind turbine platform 2. The oscillating water column wave energy conversion device 1 is completely fixed to the floating wind turbine platform 2 without a hinge connection. Therefore, there is no stress concentration problem caused by the hinge. The oscillating water column wave energy conversion device 1, as a structural component of the floating wind turbine platform, helps to strengthen the structural strength of the floating wind turbine platform 2. The power generation buoy of this embodiment does not require re-structural optimization design of the floating wind turbine platform, nor does it require special structural design of the oscillating water column wave energy conversion device 1. The oscillating water column wave energy conversion device 1 has good reliability and survivability.

[0017] The oscillating water column wave energy conversion device 1 of this embodiment has a sufficiently large water receiving area, which can not only generate sufficiently large wave energy, but also produce a sufficiently large damping effect on the floating wind turbine platform 2, reducing the pitching motion of the floating wind turbine platform 2, and allowing the floating wind turbine platform 2 to generate electricity in larger waves. When encountering a large storm, the oscillating water column wave energy conversion device 1 is set to a survival state, the air turbine 103 is closed, and the pressure reducing valve 102 is opened. In this way, the damping of the oscillating water column wave energy conversion device 1 will be very small, and air can flow out of and into the air chamber of the buoy 101 freely. The addition of the oscillating water column wave energy conversion device 1 will not cause survival problems for the floating wind turbine platform 2. The system can be protected from damage by extreme sea conditions, is safe and reliable, and improves the reliability and service life of the buoy.

[0018] The oscillating water column wave energy conversion device 1 of this embodiment can effectively convert wave energy and can play a damping role on the floating wind turbine platform 2. When the buoy has a pitch roll, the pitch roll itself can cause the oscillating water column wave energy conversion device 1 to generate a large relative movement between the water body and the device. This relative movement allows the oscillating water column wave energy conversion device 1 to convert wave energy, which can effectively reduce the pitch roll movement of the floating wind turbine platform 2 and stabilize the floating wind turbine platform 2. Since it can reduce the movement of the floating wind platform 2 in the waves, the oscillating water column wave energy conversion device 1 can allow the power-generating wind turbine to produce wind energy in larger waves, thereby increasing the duration of wind power generation.

[0019] When the oscillating water column wave energy conversion device 1 fails, it will not have a significant impact on the floating wind turbine platform 2. The failed oscillating water column wave energy conversion device 1 can still consume wave energy by shutting down the air turbine 103 and utilizing its air flow channel or pressure reducing valve 102, thereby playing a damping role on the floating wind turbine platform 2.

[0020] In this embodiment, three oscillating water column wave energy conversion devices 1 are provided in the floating wind turbine platform 2 .

[0021] In this embodiment, the power generation wind turbine is installed on a main buoy.

[0022] In this embodiment, an air turbine mounting hole is provided on the top plate, and the air turbine 103 is installed in the air turbine mounting hole.

[0023] This embodiment provides a highly reliable ocean wind and wave energy combined power generation method, which uses the above-mentioned highly reliable ocean wind and wave energy combined power generation buoy, including the following steps: S1. The floating wind turbine platform 2 is placed on the sea surface. The wind turbine converts wind energy into electrical energy. The up-and-down oscillation of the water surface in the buoy 101 of the oscillating water column wave energy conversion device 1 causes pressure changes in the buoy 101. The air turbine 103 converts the pressure changes into kinetic energy of the unidirectional rotation of the air turbine 103 shaft, driving the built-in generator to generate electricity. S2. When a big storm occurs on the sea surface, the oscillating water column wave energy conversion device 1 is set to the survival state, the air turbine 103 is closed, the pressure reducing valve 102 is opened, the damping of the oscillating water column wave energy conversion device 1 is reduced, and air can freely flow out of and into the air chamber of the buoy 101.

[0024] A highly reliable ocean wind and wave energy combined power generation buoy of the present embodiment can be converted to a survival state, specifically, the air turbine 103 is closed, the pressure reducing valve 102 is opened, the damping of the oscillating water column wave energy conversion device 1 is reduced, and air can freely flow in and out of the oscillating water column wave energy conversion device 1, thereby preventing the entire system from being damaged by large wave impacts. In this way, under severe sea conditions such as large storms, the combined power generation buoy of the present invention can be protected from damage by extreme sea conditions.

[0025] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A highly reliable ocean wind and wave energy combined power generation buoy, characterized by: It includes a floating wind turbine platform and an oscillating water column wave energy conversion device. The floating wind turbine platform is provided with a power generation wind turbine. The oscillating water column wave energy conversion device is arranged in the floating wind turbine platform. The oscillating water column wave energy conversion device includes a buoy, an air turbine, a pressure reducing valve and a generator. The buoy is a hollow cylinder with a top plate. The air turbine and the pressure reducing valve are installed on the top plate of the buoy. The air turbine has a built-in generator.

2. The highly reliable ocean wind and wave energy combined power generation buoy according to claim 1, characterized in that: The floating wind turbine platform is in the shape of a triangular prism and has three main buoys connected as one body. The three main buoys are distributed at three edges of the floating wind turbine platform.

3. The highly reliable ocean wind and wave energy combined power generation buoy according to claim 2, characterized in that: Three oscillating water column wave energy conversion devices are arranged in the floating wind turbine platform.

4. The highly reliable ocean wind and wave energy combined power generation buoy according to claim 2, characterized in that: The power generation fan is installed on a main buoy.

5. The highly reliable ocean wind and wave energy combined power generation buoy according to claim 1, characterized in that: An air turbine mounting hole is provided on the top plate, and the air turbine is mounted in the air turbine mounting hole.

6. A highly reliable ocean wind and wave energy combined power generation method, which uses the highly reliable ocean wind and wave energy combined power generation buoy according to any one of claims 1 to 5, characterized in that: The steps include: S1. A floating wind turbine platform is placed on the sea surface. The wind turbine converts wind energy into electrical energy. The oscillating water surface inside the buoy of the wave energy conversion device causes pressure changes inside the buoy. The air turbine converts the pressure changes into kinetic energy for the unidirectional rotation of the air turbine shaft, driving the built-in generator to generate electricity. S2. When a big storm occurs on the sea surface, the oscillating water column wave energy conversion device is set to the survival state, the air turbine is closed, the pressure reducing valve is opened, the damping of the oscillating water column wave energy conversion device is reduced, and air can flow out of and into the air chamber of the buoy freely.

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