Floating type wind energy and wave energy combined power generation device

Abstract

The invention provides a floating type wind energy and wave energy combined power generation device, and belongs to the technical field of new energy application. The direct-driven generator is directly driven through vertical movement of the buoy shell, so that direct conversion of mechanical energy is realized, and intermediate energy loss is reduced; the combination of the buoy shell and the elastic cable has high response sensitivity and is suitable for different wave frequencies and amplitudes; the wave response is optimized by adjusting the buoyancy center of the cavity of the buoy; and the elastic mooring rope can absorb dynamic impact of waves and transmit energy at the same time, so that the device adapts to various wave frequencies and amplitudes, and the resonance phenomenon is avoided. The device comprises a semi-submersible type floating platform and a floating type wind driven generator, and further comprises an oscillating floater type wave energy power generation assembly. A floating type wind driven generator is fixedly arranged in the middle of the semi-submersible type floating platform, and three sets of oscillation floater type wave energy power generation assemblies are arranged on the periphery of the bottom of the floating type wind driven generator at equal angles.

Description

Technical Field

[0001] The invention relates to a floating wind energy and wave energy combined power generation device, and specifically belongs to the technical field of new energy application. Background Art

[0002] At present, the development of offshore wind power in my country is approaching saturation, and deep-sea wind power is a new trend in the development of offshore wind power. However, there are still many problems in deep-sea wind power, especially in floating wind turbines. Although deep-sea wind power has the advantages of abundant wind resources, small environmental impact, and high social acceptance, the impact of strong winds and waves on the stability of floating wind turbines and the power loss of long-distance transmission need to be solved urgently.

[0003] The Chinese patent document "CN213574459U" proposes an offshore wind power and wave power generation system. It includes an offshore wind turbine and an offshore floating platform, which can comprehensively utilize wave energy and wind energy for power generation. Its float is a cylinder. An air chamber-driven wave power generation method is adopted. The wave movement causes air flow through the air chamber, driving the turbine to generate electricity. Compared with the traditional oscillating float wave energy device, this design avoids direct contact between mechanical moving parts and seawater, greatly improves the corrosion resistance and durability of the equipment, and reduces maintenance costs.

[0004] However, this technical solution still has shortcomings. Its wave energy generates airflow through the air chamber to drive the turbine to generate electricity. This design relies on the airtightness of the air chamber and the airflow speed. The energy conversion path is long and the efficiency is low. Especially at low wave frequency and small wave amplitude, insufficient air flow power will limit the power generation capacity. Summary of the invention

[0005] The purpose of the present invention is to provide a floating wind and wave energy combined power generation device to ensure that the device can operate stably for a long time in a deep sea environment, while having the characteristics of modular design and multi-energy complementarity, and is suitable for large-scale marine energy development.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: the invention includes a semi-submersible floating platform and a floating wind turbine, and also includes an oscillating float type wave energy power generation component; the semi-submersible floating platform adopts a triangular multi-buoy support structure, a floating wind turbine is fixedly arranged in the middle position of the semi-submersible floating platform, three groups of oscillating float type wave energy power generation components are arranged at equal angles around the bottom of the floating wind turbine, and the oscillating float type wave energy power generation component is located above the semi-submersible floating platform.

[0007] Furthermore, floating wind turbines capture wind energy through their blades, drive the generator to work and generate electricity, thereby utilizing wind energy. The oscillating float wave energy generation component converts mechanical energy into electrical energy through the up and down vibrations caused by the action of waves. Finally, the electrical energy is transmitted through a semi-submersible floating platform power concentration device and then transmitted to the land power grid via submarine cables.

[0008] The oscillating float wave energy power generation assembly comprises a buoy shell, a buoy cavity and a direct-drive generator; a partition is fixedly arranged on the inner side of the buoy shell, a buoy cavity is formed between the partition and the inner side wall of the buoy shell, a direct-drive generator is fixedly arranged on the top surface of the partition, and two groups of direct-drive generators are arranged;

[0009] The buoy shell is a streamlined semi-elliptical structure that opens upward, and the buoy shell is made of corrosion-resistant composite materials.

[0010] Furthermore, the buoyancy shell provides buoyancy for the wave energy system and ensures that the internal equipment is not corroded by seawater. The buoyancy shell is designed to be streamlined to reduce wave resistance and optimize floating response. The internal cavity of the buoy provides installation space for the power generation system and at the same time adjusts the buoyancy center of the buoy so that it can produce vertical movement with maximum amplitude under the action of waves.

[0011] The oscillating float wave energy power generation assembly also includes an elastic cable and a driving cable; the internal mechanism of the direct-drive generator is connected to the driving cable, one end of the driving cable is connected to the elastic cable, and the other end of the elastic cable is fixedly connected to the semi-submersible floating platform.

[0012] Furthermore, the elastic cables are used to transmit the mechanical energy generated by the wave floating. The elastic cables have high strength and elasticity characteristics and can withstand long-term wave loads. The driving cables are the transmission medium that converts the up and down movement of the buoy into the mechanical energy of the generator.

[0013] The oscillating buoy wave energy power generation assembly also includes a cable; the direct-drive generator is electrically connected to the cable, the other end of the cable is electrically connected to the power concentration device of the semi-submersible floating platform, and the cable is made of waterproof and corrosion-resistant materials.

[0014] Furthermore, the cable transmits the electric energy generated by the generator to the power concentration device on the platform, and the provision of waterproof and anti-corrosion materials makes the cable suitable for long-term marine environment.

[0015] The semi-submersible floating platform is fixed to the seabed by anchor chains, and the floating wind turbine is electrically connected to the power concentration device of the semi-submersible floating platform by cables.

[0016] Furthermore, it is fixed to the seabed by anchor chains to ensure the stability of the device in severe sea conditions.

[0017] The beneficial effects of the present invention are:

[0018] 1. The direct-drive generator is directly driven by the up and down movement of the buoy shell, thereby realizing the direct conversion of mechanical energy and reducing the intermediate energy loss; the combination of the buoy shell and the elastic cable has a high response sensitivity and is suitable for different wave frequencies and amplitudes.

[0019] 2. The buoy shell is a streamlined semi-elliptical structure, which optimizes the wave response by adjusting the buoyancy center of the buoy cavity; and the elastic cable can absorb the dynamic impact of waves while transmitting energy, adapting to a variety of wave frequencies and amplitudes, and avoiding the occurrence of resonance.

[0020] 3. Integrate floating wind turbines and oscillating float wave energy generation components into the same system, making full use of the two natural resources of wind energy and wave energy in the ocean, with obvious multi-energy complementary characteristics; there are significant differences in the resource distribution of wind energy and wave energy in time and space. Wind energy is usually stronger during the day, while wave energy is relatively stable and can still be sustainably used at night; through this multi-energy complementary design, when the wind speed is low, the wave energy device can still generate electricity efficiently to ensure the output stability of the system; in addition, this combined power generation device reduces dependence on a single energy source, significantly improves energy utilization efficiency and power generation capacity, and is an effective solution to cope with the volatility of marine energy.

[0021] 4. The oscillating float wave energy power generation component adopts a modular design. Each component such as the buoy shell, elastic cable, direct-drive generator, etc. is independently designed and can be quickly disassembled and replaced. This design is not only convenient for operation and maintenance in complex offshore environments, but also can reduce maintenance time and costs and improve the overall reliability of the system. At the same time, the modular design allows the system to be flexibly configured according to the characteristics of the sea conditions and actual needs, and adapt to the distribution conditions of wind and wave energy resources in different regions.

[0022] 5. The buoy shell is made of highly corrosion-resistant composite materials, and a multi-layer protection structure is added to the design to ensure that the internal electronic equipment and mechanical devices are protected from seawater erosion; at the same time, the elastic cables and direct-drive generators are made of materials with excellent fatigue resistance and can withstand long-term wave impact and dynamic stretching; in addition, the entire system is designed through simulation optimization and can adapt to a variety of complex sea conditions, maintain stable operation in harsh environments, and demonstrate strong environmental adaptability.

[0023] 6. By integrating floating wind turbines and oscillating float wave energy power generation components on the same semi-submersible floating platform, the cost investment required to build multiple energy development systems separately is reduced; the shared platform and power transmission system of the combined power generation device significantly reduce the overall cost of equipment procurement, installation and maintenance; in addition, the multi-energy complementary power generation mechanism effectively increases the system's annual average power generation, thereby reducing the unit power generation cost; compared with a single floating wind power or wave power generation device, the present invention has more advantages in overall economic performance and is an economical and efficient solution to promote the development of clean energy in deep sea areas.

[0024] 7. The semi-submersible floating platform adopts a triangular multi-buoy support structure, and the structural design of the oscillating float wave energy power generation component can maintain stable operation under high sea conditions by optimizing the buoyancy distribution and dynamic response performance. The multi-floating point support structure of the buoy shell and the semi-submersible floating platform effectively disperses the impact of wave forces, while the use of elastic cables absorbs part of the dynamic load, further improving the stability and anti-capsulation ability of the system; compared with traditional fixed power generation devices, the system can adapt to the complex wave and wind conditions in deep sea areas, providing a highly stable technical path for the development of deep sea clean energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the oscillating float type wave energy power generation assembly of the present invention.

[0027] 1. Oscillating float wave energy power generation component; 2. Semi-submersible floating platform; 3. Floating wind turbine; 11. Buoy shell; 12. Elastic cable; 13. Buoy cavity; 14. Driving cable; 15. Direct-drive generator; 16. Cable. DETAILED DESCRIPTION

[0028] The following will be combined with the attached Figure 1-2 , clearly and completely describe the technical solutions in the embodiments.

[0029] Specific implementation method 1: Figure 1As shown, the device as a whole consists of a semi-submersible floating platform 2, a floating wind turbine 3 and three groups of oscillating float wave energy power generation components 1. The semi-submersible floating platform 2 adopts a triangular multi-buoy support structure to optimize the buoyancy distribution and dynamic response performance, and can maintain stable operation under high sea conditions. The floating wind turbine 3 captures wind energy through blades, drives the generator to work and generate electricity, thereby utilizing wind energy. The oscillating float wave energy power generation component 1 converts mechanical energy into electrical energy through the up and down vibration caused by the wave action, and finally transmits the electrical energy through the power concentration device of the semi-submersible floating platform 2 and transmits it to the land power grid via submarine cables;

[0030] The floating wind turbine 3 and the oscillating float wave energy power generation assembly 1 are integrated into the same system, making full use of the two natural resources of wind energy and wave energy in the ocean, and having obvious multi-energy complementary characteristics; there are significant differences in the resource distribution of wind energy and wave energy in time and space, wind energy is usually stronger during the day, while wave energy is relatively stable and can still be sustainably used at night; through this multi-energy complementary design, when the wind speed is low, the wave energy device can still generate electricity efficiently to ensure the output stability of the system; in addition, this combined power generation device reduces the dependence on a single energy source, significantly improves energy utilization efficiency and power generation capacity, and is an effective solution to deal with the volatility of ocean energy;

[0031] At the same time, the cost investment required to build multiple energy development systems separately is reduced; the shared platform and power transmission system of the combined power generation device significantly reduce the overall cost of equipment procurement, installation and maintenance; in addition, the multi-energy complementary power generation mechanism effectively increases the system's annual average power generation, thereby reducing the unit power generation cost; compared with a single floating wind power or wave power generation device, the present invention has more advantages in overall economic efficiency and is an economical and efficient solution to promote the development of clean energy in deep sea areas;

[0032] The oscillating float wave energy power generation assembly 1 adopts a modular design, and each component such as the buoy shell 11, the elastic cable 12, the direct-drive generator 15, etc. are independently designed, which can be quickly disassembled and replaced; this design is not only convenient for operation and maintenance in complex offshore environments, but also can reduce maintenance time and costs, and improve the overall reliability of the system. At the same time, the modular design allows the system to be flexibly configured according to the characteristics of the sea conditions and actual needs, and adapt to the distribution conditions of wind and wave energy resources in different regions;

[0033] The semi-submersible floating platform 2 adopts a triangular multi-buoy support structure, and the structural design of the oscillating float wave energy power generation component 1 can maintain stable operation under high sea conditions by optimizing the buoyancy distribution and dynamic response performance. The multi-floating point support structure of the buoy shell 11 and the semi-submersible floating platform 2 effectively disperses the impact of wave forces, while the use of elastic cables 12 absorbs part of the dynamic load, further improving the stability and anti-overturning ability of the system. Compared with traditional fixed power generation devices, the system can adapt to the complex wave and wind field conditions in deep sea areas, providing a highly stable technical path for the development of deep sea clean energy.

[0034] Specific implementation method 2: Figure 2 As shown, the buoy shell 11 provides buoyancy for the wave energy system. The buoy shell 11 is designed as a streamlined semi-elliptical structure, thereby reducing the resistance of waves and optimizing the floating response. The buoy shell 11 is made of a composite material with high corrosion resistance, and a multi-layer protection structure is added to the design to ensure that the internal electronic equipment and mechanical devices are protected from seawater erosion; at the same time, a partition is fixedly arranged on the inside of the buoy shell 11, and a buoy cavity 13 is formed between the partition and the inner wall of the buoy shell 11. The wave response is optimized by adjusting the buoyancy center of the buoy cavity 13. The direct-drive generator 15 is the core component of the wave energy device and can reduce intermediate transmission losses;

[0035] The buoy shell 11 vibrates up and down under the action of waves, driving the connected elastic cable 12 to stretch and contract. The elastic cable 12 directly transmits the mechanical energy of the wave to the inside of the direct-drive generator 15 through the driving cable 14, converting the mechanical movement of the elastic cable 12 into electrical energy output. The elastic cable 12 can absorb the dynamic impact of the wave and transmit energy at the same time, adapting to a variety of wave frequencies and amplitudes, and avoiding the occurrence of resonance. At the same time, the elastic cable 12 and the direct-drive generator 15 are made of materials with excellent fatigue resistance and can withstand long-term wave impact and dynamic stretching.

[0036] Finally, the electricity generated by wind and wave energy is transmitted to the power concentration device on the platform through cable 16. The waterproof and anti-corrosion materials of cable 16 make it suitable for long-term marine environment. It is then transmitted to the land power grid through submarine cables to achieve stable output of clean energy. In addition, the entire system is designed through simulation optimization and can adapt to a variety of complex sea conditions such as strong winds and waves, high humidity, etc., maintain stable operation in harsh environments, and demonstrate strong environmental adaptability.

[0037] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A floating wind and wave energy combined power generation device, comprising a semi-submersible floating platform (2) and a floating wind turbine (3), characterized in that: Also included is an oscillating buoy wave energy power generation assembly (1); The semi-submersible floating platform (2) is arranged with a triangular multi-buoy support structure. A floating wind turbine (3) is fixedly arranged in the middle of the semi-submersible floating platform (2). Three groups of oscillating float type wave energy power generation components (1) are arranged at equal angles around the bottom of the floating wind turbine (3). The oscillating float type wave energy power generation components (1) are located above the semi-submersible floating platform (2).

2. A floating wind and wave energy combined power generation device according to claim 1, characterized in that: The oscillating buoy wave energy power generation assembly (1) comprises a buoy shell (11), a buoy cavity (13) and a direct-drive generator (15); A partition is fixedly arranged inside the buoy shell (11), a buoy cavity (13) is formed between the partition and the inner wall of the buoy shell (11), a direct-drive generator (15) is fixedly arranged on the top surface of the partition, and two groups of direct-drive generators (15) are arranged.

3. A floating wind and wave energy combined power generation device according to claim 2, characterized in that: The buoy shell (11) is a streamlined semi-elliptical structure that is open upward, and the buoy shell (11) is made of corrosion-resistant composite material.

4. A floating wind and wave energy combined power generation device according to claim 1, characterized in that: The oscillating buoy wave energy power generation assembly (1) further comprises an elastic cable (12) and a driving cable (14); The internal mechanism of the direct-drive generator (15) is connected to a driving cable (14), one end of the driving cable (14) is connected to an elastic cable (12), and the other end of the elastic cable (12) is fixedly connected to a semi-submersible floating platform (2).

5. A floating wind and wave energy combined power generation device according to claim 1, characterized in that: The oscillating buoy wave energy power generation assembly (1) further comprises a cable (16); The direct-drive generator (15) is electrically connected to a cable (16), and the other end of the cable (16) is electrically connected to a power concentration device of the semi-submersible floating platform (2).

6. A floating wind and wave energy combined power generation device according to claim 1, characterized in that: The semi-submersible floating platform (2) is fixed on the seabed by means of anchor chains, and the floating wind turbine (3) is electrically connected to the power concentration device of the semi-submersible floating platform (2) by means of cables (16).

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