Wind, light and wave energy comprehensive offshore power generation platform

Abstract

The utility model provides a wind, light and wave energy comprehensive offshore power generation platform, which comprises a floating platform, a mooring system, a wind power generation module, an oscillating floater type wave energy power generation module and a photovoltaic power generation module, the floating platform is of a circular structure, a groove cabin is arranged in the middle of the top of the floating platform, and the wind power generation module is centrally erected on the floating platform; the oscillating floater type wave energy power generation module is arranged in the middle under the floating platform, and solar photovoltaic panels of the photovoltaic power generation module are uniformly laid around the center of the floating platform; comprehensive, efficient, reliable and stable utilization of multi-energy complementation of offshore wind energy, wave energy and solar energy is achieved; the impact load of waves on the platform is reduced; wind direction limitation is broken through, and aerial work requirements are reduced; the rolling and pitching resistance is improved, the seakeeping performance of the floating platform is improved, and the overturning resistance is improved; the seakeeping performance of the platform and the safety and self-storage performance under the extreme storm condition are improved, the utilization rate of offshore renewable energy sources is increased, and the offshore operation risk and the installation cost are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of marine renewable energy power generation, and in particular to a wind, solar and wave energy integrated offshore power generation platform. Background Technology

[0002] Existing single-type marine renewable energy power generation devices generally face challenges such as poor system stability, small generator scale and low efficiency, high unit power generation cost, and difficulty in grid connection. Therefore, developing integrated floating platforms that integrate multiple renewable energy sources for power generation at sea has become an inevitable trend in the development and utilization of marine energy.

[0003] The wind-solar-wave integrated offshore power generation platform is dedicated to integrating the collection, conversion, power generation, and supply of offshore wind energy, wave energy, and solar energy into a single operating system. This system can operate in an integrated manner in the ocean for a long period of time, providing both self-powered and external power supply, and achieving multi-level, efficient utilization and coordinated scheduling of multiple energy sources.

[0004] In large-scale multi-energy complementary offshore floating power generation systems, situations where the power output of all three modules is insufficient simultaneously are rare. Currently, research on floating wind, wave, and photovoltaic multi-energy complementary offshore power generation platforms in my country is still relatively lacking, and existing devices also suffer from problems such as complex structures, high development costs, and poor platform stability. Utility Model Content

[0005] This utility model aims to provide an integrated offshore power generation platform for wind, solar and wave energy, which can ensure stable power supply, improve output power, and solve the problems of low energy density, poor stability and unstable power supply of single offshore renewable energy power generation devices, so as to realize the comprehensive, efficient, reliable and stable utilization of offshore wind energy, solar energy and wave energy.

[0006] Therefore, the technical solution adopted by this utility model is as follows: a wind, solar and wave energy integrated offshore power generation platform, including a floating platform, a mooring system set below the floating platform, a wind power generation module set above the floating platform, an oscillating float-type wave energy generation module set below the floating platform, and a photovoltaic power generation module laid on the surface of the floating platform. The floating platform has a circular structure with a recessed nacelle in the middle of the top. The wind power generation module stands centrally on the floating platform, and the generator body of the wind power generation module is set in the recessed nacelle. The oscillating float-type wave energy generation module is centrally set directly below the floating platform and is equipped with a hydraulic motor generator. The solar photovoltaic panels of the photovoltaic power generation module are evenly laid around the center of the floating platform and avoid the recessed nacelle. The photovoltaic power generation module is equipped with a collector device set in the recessed nacelle.

[0007] As a preferred embodiment of the above scheme, the wind power generation module includes a generator main shaft vertically mounted on the top of the generator body and wind turbine blades mounted on the generator main shaft. All wind turbine blades are arranged in a ring at uniform intervals around the generator main shaft through their respective corresponding support rods, forming a vertical axis wind power generation module.

[0008] More preferably, a hydraulic cylinder is provided below the hydraulic motor generator. The hydraulic cylinder consists of a piston rod and a cylinder barrel. Supports are evenly spaced around the outer circumference of the cylinder barrel. The piston rod is connected to one end of the main anchor cable, and the other end of the main anchor cable is anchored to the seabed.

[0009] More preferably, the solar photovoltaic panels are installed via adjustable support frames that are evenly distributed around the circumference of the floating platform. The adjustable support frames are made of high-strength, lightweight materials and have an integrated cable channel connected to a junction device. The adjustable support frames can be height-adjusted to adjust the distance between the floating platform and the solar photovoltaic panels.

[0010] More preferably, the mooring system includes three corrosion-resistant secondary anchor chains disposed below the floating platform, with the free ends of the secondary anchor chains anchored to the seabed, and floats disposed on the secondary anchor chains, with the three secondary anchor chains arranged at 120° around the circumference of the floating platform.

[0011] A further preferred embodiment is that the solar photovoltaic panel is an arched ring structure composed of several fan-shaped panels, with a higher center and a lower outer perimeter.

[0012] More preferably, the float is a cylindrical body with a ballast water tank, the ballast water tank being used for ballast water regulation within the float.

[0013] The beneficial effects of this utility model are as follows: Wind power generation modules and photovoltaic power generation modules are arranged on the platform, and an oscillating float-type wave energy generation module is arranged at the bottom of the platform, achieving comprehensive, efficient, reliable, and stable utilization of offshore wind energy, wave energy, and solar energy complementarity; the oscillating float-type wave energy generation module at the bottom of the floating platform forms "flexible damping," absorbing wave energy and converting it into electrical energy while reducing the impact load of waves on the platform; the wind power generation module adopts a vertical axis design, breaking through wind direction limitations, and the core components are concentrated in the center of the floating platform, reducing the need for high-altitude operations; it improves the resistance to rolling and pitching, enhances the wave resistance of the floating platform, and significantly increases the platform's ability to resist capsizing; it improves the platform's wave resistance and safety and self-sufficiency under extreme wind and wave conditions, increases the utilization rate of offshore renewable energy, and reduces offshore operation risks and installation costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2This is a side view of the floating platform in this utility model (the mooring system is not shown).

[0016] Figure 3 This is a structural schematic diagram of the wind power generation module in this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the oscillating float-type wave energy generation module in this utility model. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1-4 As shown, a wind, solar and wave energy integrated offshore power generation platform includes a floating platform 4, a mooring system located below the floating platform 4, a wind power generation module located above the floating platform 4, an oscillating float-type wave energy generation module located below the floating platform 4, and a photovoltaic power generation module laid on the upper surface of the floating platform 4. The floating platform 4 has a circular structure with a recessed nacelle in the center of the top. The wind power generation module stands centrally on the floating platform 4, and the generator body 3 of the wind power generation module is located inside the recessed nacelle. The oscillating float-type wave energy generation module is centrally located directly below the floating platform 4 and is equipped with a hydraulic motor generator. The solar photovoltaic panels 5 of the photovoltaic power generation module are evenly laid around the center of the floating platform 4 and avoid the recessed nacelle. The photovoltaic power generation module is equipped with a collector device located inside the recessed nacelle.

[0020] The floating platform 4 adopts a circular structure design, which has symmetrical and uniform hydrodynamic characteristics. This structure can effectively reduce the roll, pitch, and yaw moments of the floating platform 4 caused by waves and ocean currents, significantly improving the structural stability of the floating platform 4 under complex sea conditions. Furthermore, a recessed engine room is set in the middle of the floating platform 4, forming a radial layout centered on the recessed engine room. The solar photovoltaic panels 5 are evenly laid around the center of the floating platform 4, which not only avoids the wind power generation module from blocking the sunlight of the solar photovoltaic panels 5, but also optimizes the center of gravity distribution of the floating platform 4 through symmetrical counterweight, further enhancing the overall anti-overturning capability.

[0021] The wind power generation module includes a generator main shaft 1 vertically mounted at the top of the generator body 3 and wind turbine blades 2 mounted on the generator main shaft 1. All wind turbine blades 2 are arranged in a ring at uniform intervals around the generator main shaft 1 through their respective support rods, forming a vertical axis wind power generation module.

[0022] The wind power generation module adopts an omnidirectional wind direction design, which can capture wind energy from all directions without the need for a yaw system, thus solving the problem of traditional horizontal axis wind turbines being constrained by wind direction. The generator main shaft 1 is directly connected to the generator body 3 in the recessed nacelle, which simplifies the mechanical structure, reduces maintenance costs, and improves wind energy conversion efficiency.

[0023] A hydraulic cylinder is installed below the hydraulic motor generator. The hydraulic cylinder consists of a piston rod 7 and a cylinder barrel. Supports 6 are evenly spaced around the outer circumference of the cylinder barrel. The piston rod 7 is connected to one end of the main anchor cable 8, and the other end of the main anchor cable 8 is anchored to the seabed.

[0024] Anchored to the seabed by the main anchor cable 8, when waves act on the floating platform 4, the heaving motion of the floating platform 4 drives the piston rod 7 to reciprocate and extend, converting wave energy into hydraulic energy, which is then used to generate electricity by the hydraulic motor generator.

[0025] The solar photovoltaic panels 5 are installed via adjustable support frames 11 that are evenly distributed circumferentially on the floating platform 4. The adjustable support frames 11 are made of high-strength, lightweight materials and have integrated cable channels connecting to the combiner device. The height of the adjustable support frames 11 can be adjusted, thereby adjusting the distance between the floating platform 4 and the solar photovoltaic panels 5. This reduces fatigue damage to the solar photovoltaic panels 5 caused by waves and lowers the risk of structural fatigue failure.

[0026] The electricity generated by the solar photovoltaic panels 5 is directly connected to the combiner device in the center of the platform through the built-in integrated cable, avoiding the risk of external cables being impacted by sea waves. The solar photovoltaic panel array 5, which is evenly distributed around the circular platform, can maximize the use of the platform's surface area and further improve the utilization rate of solar energy.

[0027] The solar photovoltaic panel 5 is an arched ring structure composed of several fan-shaped panels, with a higher center and a lower outer perimeter. The height of the solar photovoltaic panel 5 can be adjusted using a support frame to provide suitable space between the floating platform 4 and the solar photovoltaic panel 5, reducing the impact of waves on the solar photovoltaic panel 5.

[0028] The mooring system includes three corrosion-resistant secondary anchor chains 9 installed below the floating platform 4. The free ends of the secondary anchor chains 9 are anchored to the seabed. A float plate 10 is also installed on the secondary anchor chains 9. The three secondary anchor chains 9 are arranged at 120° around the floating platform 4.

[0029] The float 10 is a cylindrical body with a ballast water tank, which is used for regulating the ballast water within the float 10. The float 10, being a cylindrical body with a ballast water tank, dynamically adjusts the injected ballast water volume to maintain an appropriate draft for different operating conditions, ensuring the wave energy device always operates in optimal condition. For example, in extreme weather, the ballast water can be drained to bring the float close to the bottom of the platform, reducing the impact of wave loads on the power generation module and enhancing the system's self-sufficiency under severe conditions such as typhoons.

[0030] Wind power and photovoltaic power generation modules are arranged on the platform, while an oscillating float-type wave energy generation module is arranged at the bottom of the platform, realizing the comprehensive, efficient, reliable, and stable utilization of offshore wind energy, wave energy, and solar energy complementarity. The bottom of the floating platform 4 is equipped with an oscillating float-type wave energy generation module, forming "flexible damping" to absorb wave energy, convert it into electrical energy, and reduce the impact load of waves on the platform. The wind power generation module adopts a vertical axis design, which breaks through the wind direction limitation, and the core components are concentrated in the center of the floating platform 4, reducing the need for high-altitude operations. It improves the anti-roll and anti-pitch capabilities, enhances the seakeeping of the floating platform 4, and significantly increases the platform's ability to resist capsizing. It improves the platform's seakeeping and safety and self-sufficiency under extreme wind and wave conditions, increases the utilization rate of offshore renewable energy, and reduces offshore operation risks and installation costs. The offshore power generation platform can transmit electrical energy to the outside via cables.

[0031] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wind-solar-wave energy integrated offshore power generation platform, comprising a floating platform (4), a mooring system disposed below the floating platform (4), a wind power generation module disposed above the floating platform (4), an oscillating float-type wave energy generation module disposed below the floating platform (4), and a photovoltaic power generation module laid on the upper surface of the floating platform (4), characterized in that: The floating platform (4) is a circular structure with a recessed nacelle in the middle of the top. The wind power generation module stands in the center on the floating platform (4). The generator body (3) of the wind power generation module is set in the recessed nacelle. The oscillating float wave energy generation module is set in the center directly below the floating platform (4) and is equipped with a hydraulic motor generator. The solar photovoltaic panels (5) of the photovoltaic power generation module are evenly laid around the center of the floating platform (4) and avoid the recessed nacelle. The photovoltaic power generation module is equipped with a collector device set in the recessed nacelle.

2. The integrated offshore power generation platform for wind, solar, and wave energy as described in claim 1, characterized in that: The wind power generation module includes a generator main shaft (1) vertically mounted on the top of the generator body (3) and wind turbine blades (2) mounted on the generator main shaft (1). All wind turbine blades (2) are arranged in a ring at uniform intervals on the outer periphery of the generator main shaft (1) through their respective corresponding support rods, forming a vertical axis wind power generation module.

3. The integrated offshore power generation platform for wind, solar, and wave energy as described in claim 1, characterized in that: A hydraulic cylinder is provided below the hydraulic motor generator. The hydraulic cylinder consists of a piston rod (7) and a cylinder barrel. Supports (6) are evenly spaced around the outer periphery of the cylinder barrel. The piston rod (7) is connected to one end of the main anchor cable (8), and the other end of the main anchor cable (8) is anchored to the seabed.

4. The integrated offshore power generation platform for wind, solar, and wave energy as described in claim 1, characterized in that: The solar photovoltaic panel (5) is installed by an adjustable support frame (11) that is evenly distributed in a circle on the floating platform (4). The adjustable support frame (11) is made of high-strength lightweight material and has an integrated cable channel connected to the junction device. The adjustable support frame (11) can be height adjusted to adjust the distance between the floating platform (4) and the solar photovoltaic panel (5).

5. The integrated offshore power generation platform for wind, solar, and wave energy as described in claim 1, characterized in that: The mooring system includes three corrosion-resistant secondary anchor chains (9) set below the floating platform (4). The free ends of the secondary anchor chains (9) are anchored to the seabed. A float plate (10) is also set on the secondary anchor chains (9). The three secondary anchor chains (9) are arranged at 120° around the floating platform (4).

6. The integrated wind, solar, and wave energy offshore power generation platform according to claim 1, characterized in that: The solar photovoltaic panel (5) is an arched ring structure composed of several fan-shaped panels, with a high center and a low outer perimeter.

7. A wind-solar-wave integrated offshore power generation platform according to claim 5, characterized in that: The float (10) is a cylindrical body with a ballast water tank, which is used for ballast water regulation within the float (10).

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