Mud floating type offshore wind-light-wave multi-energy coupling system

Abstract

The invention relates to the technical field of offshore wind turbines, in particular to a mud floating type offshore wind-light-wave multi-energy coupling system. The system comprises a mud floating type offshore wind turbine foundation; a plurality of photovoltaic wave energy semi-submersible devices which are mutually connected are arranged on the periphery of the mud floating type offshore wind turbine foundation, a common mooring device is connected between the photovoltaic wave energy semi-submersible devices and the mud floating type offshore wind turbine foundation, and if no severe sea condition occurs, the photovoltaic wave energy semi-submersible devices can utilize photovoltaic and wave energy to generate electricity. Otherwise, the photovoltaic wave energy semi-submersible device dives. According to the technical scheme, efficient utilization of multiple energy sources can be achieved, and the stability of the mud floating type offshore wind turbine can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind turbines, and in particular to a mud-floating offshore wind-solar-wave multi-energy coupling system. Background Art

[0002] As the energy crisis becomes increasingly prominent, offshore wind power, as a renewable energy source, has become a crucial component of the current energy mix and a crucial energy source for resolving the energy crisis. Among related technologies, mud-floating offshore wind turbines have relatively limited functionality and lack stability in adverse sea conditions.

[0003] Therefore, there is an urgent need to provide a mud-floating offshore wind-solar-wave multi-energy coupling system to solve the above technical problems. Summary of the Invention

[0004] The present invention provides a mud-floating offshore wind-solar-wave multi-energy coupling system, which can not only efficiently utilize multiple energy sources but also improve the stability of mud-floating offshore wind turbines.

[0005] An embodiment of the present invention provides a mud-floating offshore wind-solar-wave multi-energy coupling system, comprising:

[0006] a mud-floating offshore wind turbine foundation;

[0007] A plurality of interconnected photovoltaic wave energy semi-submersible devices are arranged on the periphery of the mud-floating offshore wind turbine foundation and are connected to the mud-floating offshore wind turbine foundation by a common mooring device. If there are no severe sea conditions, the photovoltaic wave energy semi-submersible devices can generate electricity using photovoltaic and wave energy; otherwise, the photovoltaic wave energy semi-submersible devices dive.

[0008] Beneficial effects:

[0009] According to the mud-floating offshore wind-photovoltaic-wave multi-energy coupling system provided by the embodiment of the present invention, by arranging multiple interconnected photovoltaic wave energy semi-submersible devices on the periphery of the mud-floating offshore wind turbine foundation and connecting a common mooring device with the mud-floating offshore wind turbine foundation, it can effectively combine offshore wind power, offshore photovoltaic and wave energy generation, thereby not only making full use of offshore space resources, but also providing additional energy output for offshore wind farms, realizing efficient utilization of multiple energy sources, improving the comprehensive utilization efficiency of energy, and enhancing the competitiveness and sustainability of offshore wind power development. At the same time, the multiple interconnected photovoltaic wave energy semi-submersible devices arranged around the mud-floating offshore wind turbine foundation can effectively reduce the wave load in the marine environment, improve the environmental load of the mud-floating offshore wind turbine foundation, reduce development costs and improve the safety of wind power system operation. Therefore, the above technical solution can not only achieve efficient utilization of multiple energy sources, but also improve the stability of mud-floating offshore wind turbines. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 This is a schematic structural diagram of a mud-floating offshore wind-solar-wave multi-energy coupling system according to an embodiment of the present invention;

[0012] Figure 2 for Figure 1 The main view of the multi-energy coupling system shown;

[0013] Figure 3 for Figure 1 The schematic diagram of the structure of the photovoltaic wave energy semi-submersible device in the multi-energy coupling system shown;

[0014] Figure 4 for Figure 3 A partial enlarged view of the middle seat of the photovoltaic wave energy semi-submersible device shown;

[0015] Figure 5 for Figure 1 A schematic structural diagram of a flexible connector in a multi-energy coupling system is shown;

[0016] Figure 6 for Figure 1 A partial enlarged view of the mooring device in the multi-energy coupling system is shown.

[0017] Reference numerals:

[0018] 1- Mud-floating offshore wind turbine foundation; 2- Photovoltaic wave energy semi-submersible device; 21- Suspension seat; 211- Float; 212- Transverse connecting rod; 213- Longitudinal connecting rod; 22- Middle seat; 221- Wave energy rotor; 222- Energy storage module; 223- Opening area; 23- Top seat; 231- Mounting slot; 232- Photovoltaic panel; 233- Wave-breaking plate; 3- Mooring device; 31- Slide rail; 4- Flexible connector; 41- Protective shell; 42- Spring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a mud-floating offshore wind-solar-wave multi-energy coupling system, comprising:

[0021] A mud-floating offshore wind turbine foundation1;

[0022] A plurality of interconnected photovoltaic wave energy semi-submersible devices 2 are arranged on the periphery of the mud-floating offshore wind turbine foundation 1 and are connected to the mud-floating offshore wind turbine foundation 1 by a common mooring device 3. If there are no severe sea conditions, the photovoltaic wave energy semi-submersible devices 2 can generate electricity using photovoltaic and wave energy; otherwise, the photovoltaic wave energy semi-submersible devices 2 dive.

[0023] In this embodiment, by arranging multiple interconnected photovoltaic wave energy semi-submersible devices 2 on the periphery of the mud-floating offshore wind turbine foundation 1 and connecting a common mooring device 3 to the mud-floating offshore wind turbine foundation 1, offshore wind power, offshore photovoltaic power generation, and wave energy generation can be effectively combined, thereby not only fully utilizing offshore space resources, but also providing additional energy output for offshore wind farms, achieving efficient utilization of multiple energy sources, improving the comprehensive utilization efficiency of energy, and enhancing the competitiveness and sustainability of offshore wind power development. At the same time, the multiple interconnected photovoltaic wave energy semi-submersible devices 2 arranged around the mud-floating offshore wind turbine foundation 1 can effectively reduce the wave load in the marine environment, improve the environmental load of the mud-floating offshore wind turbine foundation 1, reduce development costs, and improve the safety of wind power system operation. Therefore, the above technical solution can not only achieve efficient utilization of multiple energy sources, but also improve the stability of mud-floating offshore wind turbines.

[0024] That is to say, the multiple interconnected photovoltaic wave energy semi-submersible devices 2 arranged around the mud-floating offshore wind turbine foundation 1 can not only fully utilize light energy and wave energy, but also reduce the wave load on the mud-floating offshore wind turbine foundation 1.

[0025] In one embodiment of the present invention, the mud-floating offshore wind turbine foundation 1 can operate in a fully submerged, semi-submerged, and mud-floating state. This allows the foundation 1 to operate in a variety of operating states, allowing it to better cope with varying sea conditions.

[0026] A submersible mud-floating offshore wind turbine means that the wind turbine foundation can be converted between a fully submerged suspended state, a semi-submerged suspended state and a mud-floating state. The fully submerged suspended state means that the wind turbine foundation is suspended in the seawater. In this state, the upper wind turbine works at a higher height, which is conducive to improving power generation efficiency and is suitable for conditions with better marine environment; the semi-submerged suspended state means that the wind turbine foundation is suspended on the sea surface. In this state, the upper wind turbine works at the highest height, which is more conducive to improving power generation efficiency and is also suitable for conditions with better marine environment; the mud-floating state means that the wind turbine foundation is fixed in the mud layer on the seabed. In this state, the upper wind turbine works at a lower height, which is conducive to improving safety and is suitable for conditions with harsher marine environment.

[0027] In one embodiment of the present invention, the photovoltaic wave energy semi-submersible devices 2 are connected by multiple flexible connectors 4. This arrangement not only effectively connects multiple photovoltaic wave energy semi-submersible devices 2 together, ensuring their coordinated operation in the marine environment, effectively controls the distance between the photovoltaic wave energy semi-submersible devices 2, and builds a stable and efficient energy collection platform array, but also allows for flexible adjustment of the relative movement between the platforms to prevent collisions due to waves, wind, or other external factors.

[0028] like Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the photovoltaic wave energy semi-submersible device 2 includes a suspension seat 21, an intermediate seat 22 and a top seat 23 connected in sequence from bottom to top. The intermediate seat 22 is provided with a wave energy rotor 221 and an energy storage module 222. The intermediate seat 22 is at the waterline under normal sea conditions. The top seat 23 is provided with a photovoltaic panel 232. The energy storage module 222 is electrically connected to the wave energy rotor 221 and the photovoltaic panel 232, respectively.

[0029] In this embodiment, the wave force is dispersed and alleviated by the coordinated action of the floating seat 21 and the wave energy rotor 221 of the intermediate seat 22, thereby greatly reducing the stress and vibration of the mud-floating offshore wind turbine foundation 1 under the impact of waves; the energy storage module 222 can collect and store the solar energy and wave energy generated by the photovoltaic panels 232 and the wave energy rotor 221 to provide electrical energy for the form conversion process of the mud-floating offshore wind turbine foundation 1 and the photovoltaic wave energy semi-submersible device 2, ensuring that during long-term stable operation at sea, the system's power demand can be met without external power supply.

[0030] In one embodiment of the present invention, the suspension seat 21 includes a plurality of floating balls 211, a plurality of transverse connecting rods 212, and a plurality of longitudinal connecting rods 213. Each two adjacent floating balls 211 are connected by a transverse connecting rod 212, and each floating ball 211 and the intermediate seat 22 are connected by a longitudinal connecting rod 213.

[0031] Each float 211 is provided with an angle sensor and an air-water displacement valve (not shown in the figure). The energy storage module 222 is electrically connected to the angle sensor and the air-water displacement valve respectively. The angle sensor is used to detect the inclination change of the float 211. The air-water displacement valve is used to adjust the air-water ratio in the float 211 based on the inclination change to adjust the center of gravity of the float 211.

[0032] In this embodiment, by installing an angle sensor and an air-water displacement valve within each buoy 211, the internal ballast water can be adjusted in a coordinated manner according to the environmental conditions surrounding the photovoltaic wave energy semi-submersible device 2. In harsh environmental conditions, when the mud-floating offshore wind turbine foundation 1 is adjusted to a mud-floating state, the buoy 211 can be filled with ballast water to increase the draft of the photovoltaic wave energy semi-submersible device 2 and ensure the stability of the photovoltaic wave energy semi-submersible device 2. Conversely, in normal environmental conditions, when the mud-floating offshore wind turbine foundation 1 is adjusted to a suspended state, the buoy 211 can release some ballast water to reduce the draft of the photovoltaic wave energy semi-submersible device 2, thereby ensuring the power generation efficiency of the mud-floating offshore wind turbine foundation 1 and the photovoltaic wave energy semi-submersible device 2.

[0033] In one embodiment of the present invention, the middle seat 22 has four vertical opening areas 223 , which are interconnected. The wave energy rotor 221 is disposed in an opening area 223 away from the mud-floating offshore wind turbine foundation 1 .

[0034] In this embodiment, four vertical opening areas 223 are provided on the middle seat 22, and the four opening areas 223 are interconnected, so that surge energy can be better dissipated. The wave energy rotor 221 is provided in an opening area 223 away from the mud-floating offshore wind turbine foundation 1, rather than a wave energy rotor 221 is provided in each opening area 223. This is because the wave energy collection effect of the other three opening areas 223 is much lower than that of the opening area 223 away from the mud-floating offshore wind turbine foundation 1. In this way, the collection of wave energy can be guaranteed while minimizing costs.

[0035] In one embodiment of the present invention, the top seat 23 has an inwardly recessed mounting groove 231, and the photovoltaic panel 232 is evenly arranged in the mounting groove 231 through a rotatable shaft (not shown in the figure). The shaft is electrically connected to the energy storage module 222, and the shaft can drive the photovoltaic panel 232 to rotate to adjust the azimuth angle of the photovoltaic panel 232.

[0036] In this embodiment, by setting the installation groove 231, its height can be used to better protect the photovoltaic panel 232 without affecting the photovoltaic panel 232 from absorbing light. By setting the rotating shaft, the azimuth angle of the photovoltaic panel 232 can be adjusted to adapt to different lighting angles and sea conditions.

[0037] In one embodiment of the present invention, an openable and closable wave-breaking plate 233 is provided on the periphery of the mounting groove 231, and the wave-breaking plate 233 is electrically connected to the energy storage module 222. If severe sea conditions occur during transportation, the ballast water in the float 211 is filled, the wave-breaking plate 233 is opened upward, and the azimuth angle of the photovoltaic panel 232 is adjusted to the vertical direction. Otherwise, the center of gravity in the float 211 is adjusted so that the middle seat 22 is at the waterline, the wave-breaking plate 233 is closed downward, and the azimuth angle of the photovoltaic panel 232 is adjusted to the light direction.

[0038] In this embodiment, since it is necessary to increase the ballast of the buoy 211 in severe sea conditions, which will cause the photovoltaic wave energy semi-submersible device 2 to have a deeper draft, an openable and closable wave-breaking plate 233 is provided on the periphery of the mounting groove 231 to form an effective protective barrier to protect the photovoltaic panel 232 from being damaged or degraded by the impact of waves and immersion in seawater. At the same time, adjusting the azimuth angle of the photovoltaic panel 232 to a vertical direction is also beneficial to preventing the impact of seawater on the photovoltaic panel 232 and soaking it. On the contrary, when the environmental conditions are good, the wave-breaking plate 233 is retracted or closed to prevent affecting the light energy utilization rate of the photovoltaic panel 232.

[0039] like Figure 5 As shown, in one embodiment of the present invention, the flexible connector 4 includes a protective shell 41 and a spring 42 disposed inside the protective shell 41. The protective shell 41 can prevent the spring 42 from being corroded and rusted by seawater.

[0040] like Figure 6 As shown, in one embodiment of the present invention, the mooring device 3 is provided with double-sided slide rails 21, the mooring points of the mud-floating offshore wind turbine foundation 1 and the mooring device 3 are on one side of the slide rail 21, and the mooring points of the photovoltaic wave energy semi-submersible device 2 and the mooring device 3 are on the other side of the slide rail 21, and the mooring points can move along the slide rail 21.

[0041] In this embodiment, by setting up double-sided slide rails 21, not only the conversion of the mud-floating offshore wind turbine foundation 1 from a suspended state to a mud-floating state and the diving process of the photovoltaic wave energy semi-submersible device 2 filled with ballast water are met, ensuring that the two structures can always maintain balance during movement and environmental changes, but also the number of required anchoring points can be reduced, thereby effectively saving offshore space.

[0042] As can be appreciated, the modular design of the photovoltaic wave energy semi-submersible device 2 enables independent production, prefabrication, and rapid on-site assembly of key components, significantly simplifying offshore construction and improving efficiency. Major components such as the photovoltaic panels 232, wave-breaking plates 233, wave energy rotors 221, flexible connectors 4, connecting rods, and buoys 211 can all be independently prefabricated on land, significantly reducing the workload and risks of offshore construction while also shortening the construction period.

[0043] It should be noted that, in this document, relational terms such as primary and secondary are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical factors in the process, method, article, or device comprising the element.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is intended only to illustrate the technical solution of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A mud-floating offshore wind-solar-wave multi-energy coupling system, characterized in that: include: a mud-floating offshore wind turbine foundation; A plurality of interconnected photovoltaic wave energy semi-submersible devices are arranged on the periphery of the mud-floating offshore wind turbine foundation and are connected to the mud-floating offshore wind turbine foundation by a common mooring device. If there are no severe sea conditions, the photovoltaic wave energy semi-submersible devices can generate electricity using photovoltaic and wave energy; otherwise, the photovoltaic wave energy semi-submersible devices dive.

2. The system according to claim 1, wherein: The working states of the mud-floating offshore wind turbine foundation include a fully submerged suspension state, a semi-submerged suspension state and a mud-floating state.

3. The system according to claim 1, wherein: The photovoltaic wave energy semi-submersible devices are connected via a plurality of flexible connectors.

4. The system according to claim 3, characterized in that The flexible connection member includes a protective shell and a spring arranged inside the protective shell.

5. The system according to claim 1, wherein: The mooring device is provided with double-sided sliding rails, the mooring points of the mud-floating offshore wind turbine foundation and the mooring device are on one side of the sliding rail, and the mooring points of the photovoltaic wave energy semi-submersible device and the mooring device are on the other side of the sliding rail, and the mooring points can move along the sliding rails.

6. The system according to any one of claims 1 to 5, characterized in that The photovoltaic wave energy semi-submersible device includes a suspension seat, an intermediate seat and a top seat connected in sequence from bottom to top. The intermediate seat is provided with a wave energy rotor and an energy storage module. The intermediate seat is at the waterline under normal sea conditions. The top seat is provided with a photovoltaic panel. The energy storage module is electrically connected to the wave energy rotor and the photovoltaic panel, respectively.

7. The system according to claim 6, characterized in that The suspension seat includes a plurality of floating balls, a plurality of transverse connecting rods and a plurality of longitudinal connecting rods, each two adjacent floating balls are connected by a transverse connecting rod, and each floating ball and the intermediate seat are connected by a longitudinal connecting rod; An angle sensor and an air-water displacement valve are provided inside each of the floats. The energy storage module is electrically connected to the angle sensor and the air-water displacement valve respectively. The angle sensor is used to detect the inclination change of the float. The air-water displacement valve is used to adjust the air-water ratio in the float based on the inclination change to adjust the center of gravity of the float.

8. The system according to claim 6, wherein: The intermediate seat has four sequentially vertical opening areas, and the four opening areas are interconnected. The wave energy rotor is arranged in an opening area away from the mud-floating offshore wind turbine foundation.

9. The system according to claim 7, wherein: The top seat has an inwardly recessed mounting groove, and the photovoltaic panel is evenly arranged in the mounting groove through a rotatable shaft. The shaft is electrically connected to the energy storage module, and the shaft can drive the photovoltaic panel to rotate to adjust the azimuth angle of the photovoltaic panel.

10. The system according to claim 9, characterized in that An openable and closable wave-breaking plate is provided on the periphery of the mounting groove, and the wave-breaking plate is electrically connected to the energy storage module. If severe sea conditions occur during transportation, the ballast water in the buoy is filled, the wave-breaking plate is opened upward, and the azimuth angle of the photovoltaic panel is adjusted to a vertical direction. Otherwise, the center of gravity in the buoy is adjusted so that the middle seat is at the waterline, the wave-breaking plate is closed downward, and the azimuth angle of the photovoltaic panel is adjusted to the light direction.

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