Patent Application
20250052222
This application claims the priority benefit of China application serial no. 202311010448.7, filed on Aug. 11, 2023. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
The present disclosure relates to the field of marine engineering, and particularly relates to a floating platform integrating wave attenuation with marine energy power generation and a working method thereof.
In recent years, a utilization rate of offshore renewable energy has been significantly improved thanks to the research and utilization of floating platforms, such as offshore floating wind turbines, floating solar panels, and floating wave energy converters. The present disclosure provides a multifunctional floating platform, which integrates wave attenuation with marine energy power generation in combination with characteristics of an offshore floating breakwater, and complements the breakwater to a power generation structure, such that power can be generated using marine energy, waves are attenuated, ports and ponds are protected, and near-shore fisheries and shipping safety are guaranteed.
An objective of the present disclosure is to provide a floating platform integrating wave attenuation with marine energy power generation and a working method thereof. The platform can employ a breakwater structure to reduce wave heights, create sheltered sea areas, and solve the problems faced by coastal buildings, fisheries, and shipping that are vulnerable to wave impacts. In addition, the platform can generate power from offshore wind and wave energy while solving the problem that an offshore floating wind turbine is easily damaged by waves.
The present disclosure provides a technical solution as follows: a floating platform integrating wave attenuation with marine energy power generation, comprising a breakwater, a tuned damping wave energy converter, and an offshore floating wind turbine;
Preferably, the breakwater is composed of a double-cylindrical-box structure and connecting bulkheads, the double-cylindrical-box structure is composed of two cylindrical boxes that are parallel to each other, two ends of the double-cylindrical-box structure are connected to each other through the connecting bulkheads, a moon pool area is formed in a middle of the double-cylindrical-boxes, and the breakwater provides the floating base for the offshore floating wind turbine, and provides a working environment for the offshore floating wind turbine and the tuned damping wave energy converter.
Preferably, the breakwater is connected to the offshore floating wind turbine and the tuned damping wave energy converter through the connecting rod, a circular groove is formed on an inner side of each of the connecting bulkheads of the breakwater, each end of the connecting rod is provided with a self-adaptive connecting disk, and the self-adaptive connecting disk extends into the circular groove and is then connected with the circular groove in a sliding manner, such that the connecting rod and the breakwater can roll relative to each other.
Preferably, the self-adaptive connecting disk is a disk structure, and a first circular notch is formed on a circumferential end surface of the self-adaptive connecting disk; after the self-adaptive connecting disk extends into the circular groove, a second circular notch is formed on an inner wall of the circular groove directly opposite to the first circular notch, the first circular notch and the second circular notch form a sliding track, a roller is disposed inside the sliding track, and the self-adaptive connecting disk keeps relatively stationary when the roller makes the self-adaptive connecting disk rotate inside the circular groove.
Preferably, the circular pile column is disposed in a middle of the connecting rod, and an upper end surface of the circular pile column is connected to a tower of the offshore floating wind turbine; a wave energy converter mounting platform is disposed on an outer wall below the upper end surface of the circular pile column, and the tuned damping wave energy converter is mounted on the wave energy converter mounting platform; and a ballast tank is mounted on a lower end surface of the circular pile column, and the ballast tank is configured to lower a center of gravity of the floating platform.
Preferably, inclined braces are evenly disposed between a bottom end surface of the wave energy converter mounting platform and the circular pile column, and the inclined braces are capable of further improving load-bearing capacity of the wave energy converter mounting platform.
Preferably, the moon pool area utilizes its resonance effect to provide a wave field for the tuned damping wave energy converter, thereby increasing an energy density of wave energy.
Preferably, the tuned damping wave energy converter includes semicircular disks disposed on both sides of the circular pile column, hydraulic power generation damping systems, and array-type oscillating power generation floats, where the semicircular disks are connected to the wave energy converter mounting platform in a middle of the circular pile column through bolts, a lower end surface of each of the semicircular disks is provided with the hydraulic power generation damping systems distributed in an array, and a lower end of each of the hydraulic power generation damping systems is connected to the array-type oscillating power generation floats through tension-compression rods.
Preferably, the hydraulic power generation damping systems and the array-type oscillating power generation floats are evenly distributed in pairs beneath a circular table formed by the two semicircular disks, the array-type oscillating power generation floats convert wave energy into mechanical energy, and the hydraulic power generation damping systems then convert the mechanical energy into electrical energy.
A working method of the floating platform integrating wave attenuation with marine energy power generation is as follows: when the breakwater is affected by waves and starts to sway, the cylindrical boxes accordingly shake, driving the connecting bulkheads to shake; and the connecting rod is in rolling connection with the connecting bulkheads through the self-adaptive connecting disk, such that mutual movements among the breakwater and the offshore floating wind turbine, and the tuned damping wave energy converter are separated.
The moon pool area in the middle of the breakwater provides the wave field for the tuned damping wave energy converter, and the tuned damping wave energy converter generates power using wave energy in the wave field.
When the offshore floating wind turbine sways due to the impact of waves and wind, the connecting rod is driven to shake as a whole, such that the hydraulic power generation damping systems of the tuned damping wave energy converter are driven to shake, stokes of the hydraulic power generation damping systems are accordingly increased, and power generation efficiency of wave energy is improved, in which case, affected by damping force of the hydraulic power generation damping systems themselves, movements of the hydraulic power generation damping systems lag behind movements of the offshore floating wind turbine, thereby reducing sway, tuning and reducing vibration of the offshore floating wind turbine.
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure.
The technical solutions of embodiments of the present disclosure will be described below clearly and comprehensively in conjunction with accompanying drawings of the embodiments of the present disclosure. Apparently, the embodiments described are merely some embodiments rather than all embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments acquired by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present disclosure.
In the description of the present disclosure, it is to be understood that the terms “central”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, etc. indicate azimuthal or positional relations based on those shown in the drawings only for ease of description of the present disclosure and for simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation and be constructed and operative in a particular orientation, and thus may not be construed as a limitation on the present disclosure.
In the present disclosure, unless expressly specified otherwise, the terms “mount”, “connect”, “arrange”, etc. are to be construed broadly and, for example, may be fixedly connected or arranged, or detachably connected or arranged, or integrally connected or arranged. Those of ordinary skill in the art can understand specific meanings of the above terms in the present disclosure according to specific circumstances.
Furthermore, the terms “first” and “second” are merely for the purpose of description, and cannot be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined by “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present disclosure, “plurality” means two or more, unless expressly specified otherwise.
As shown in
In this embodiment, the breakwater 1 is connected to the offshore floating wind turbine 3 and the tuned damping wave energy converter 2 through a connecting rod 4, a circular groove 103 is formed on an inner side of each of the connecting bulkheads 102 of the breakwater 1, each end of the connecting rod 4 is provided with a self-adaptive connecting disk 402, and the self-adaptive connecting disk 402 extends into the circular groove 103 and is then connected with the circular groove 103 in a sliding manner, such that the connecting rod 4 and the breakwater 1 can roll relative to each other.
In this embodiment, the self-adaptive connecting disk 402 is a disk structure, and a first circular notch is formed on a circumferential end surface of the self-adaptive connecting disk 402; after the self-adaptive connecting disk 402 extends into the circular groove 103, a second circular notch is formed on an inner wall of the circular groove 103 directly opposite to the first circular notch, the first circular notch and the second circular notch form a sliding track 404, a roller 403 is disposed inside the sliding track 404, and the self-adaptive connecting disk 402 keeps relatively stationary when the roller 403 makes the self-adaptive connecting disk 402 rotate inside the circular groove 103.
In this embodiment, a circular pile column 405 is disposed in a middle of the connecting rod 4, and an upper end surface of the circular pile column 405 is connected to a tower of the offshore floating wind turbine 3; a wave energy converter mounting platform 406 is disposed on an outer wall below the upper end surface of the circular pile column 405, and the tuned damping wave energy converter 2 is mounted on the wave energy converter mounting platform 406; and a ballast tank 5 is mounted on a lower end surface of the circular pile column 405, and the ballast tank 5 is configured to lower a center of gravity of the floating platform.
In this embodiment, in order to improve load-bearing capacity of the wave energy converter mounting platform 406, inclined braces are evenly disposed between a bottom end surface of the wave energy converter mounting platform 406 and the circular pile column 405, the inclined braces are capable of further improving load-bearing capacity of the wave energy converter mounting platform 406 when carrying the offshore floating wind turbine 3.
In this embodiment, the tuned damping wave energy converter 2 includes semicircular disks 201 positioned on both side of the circular pile column 405, hydraulic power generation damping systems 202, and array-type oscillating power generation floats 203, where the semicircular disks 201 are connected to the wave energy converter mounting platform 406 in a middle of the circular pile column 405 through bolts, a lower end surface of each of the semicircular disks 201 is provided with the hydraulic power generation damping systems 202 distributed in an array, a lower end of each of the hydraulic power generation damping systems 202 is connected to the array-type oscillating power generation floats 203 through tension-compression rods 204, the hydraulic power generation damping systems 202 and the array-type oscillating power generation floats 203 are evenly distributed in pairs beneath a circular table formed by the two semicircular disks 201, the array-type oscillating power generation floats 203 convert wave energy into mechanical energy, and the hydraulic power generation damping systems 202 then convert the mechanical energy into electrical energy.
During operation, when the breakwater 1 is affected by waves and starts to sway, the cylindrical boxes 101 accordingly shake, driving the connecting bulkheads 102 to shake; and the connecting rod 4 is in rolling connection with the connecting bulkheads 102 through the self-adaptive connecting disk 402, such that mutual movements among the breakwater 1 and the offshore floating wind turbine 3, and the tuned damping wave energy converter 2 are separated.
The moon pool area 104 in the middle of the breakwater 1 provides the wave field for the tuned damping wave energy converter 2, and the tuned damping wave energy converter 2 generates power using wave energy in the wave field.
When the offshore floating wind turbine 3 sways due to the impact of waves and wind, the connecting rod 4 is driven to shake as a whole, such that the hydraulic power generation damping systems 202 of the tuned damping wave energy converter 2 are driven to shake, stokes of the hydraulic power generation damping systems 202 are accordingly increased, and power generation efficiency of wave energy is improved, in which case, affected by damping force of the hydraulic power generation damping systems 202 themselves, movements of the hydraulic power generation damping systems 202 lag behind movements of the offshore floating wind turbine 3, thereby reducing sway, tuning and reducing vibration of the offshore floating wind turbine 3.
The present disclosure integrates the breakwater 1, the offshore floating wind turbine 3, and the tuned damping wave energy converter 2, making functions of the three complementary, specifically, the breakwater 1 provides the floating base and good power generation environment for the offshore floating wind turbine 3 and the tuned damping wave energy converter 2, and a plurality of the tuned damping wave energy converters 2 can be disposed, and are evenly distributed beneath the offshore floating wind turbine 3, thereby tuning and reducing vibration of the offshore floating wind turbine 3, and ensuring stable power generation of the wind energy. Furthermore, vibrations caused by the waves and wind acting on the offshore floating wind turbine 3 improve the power generation efficiency of the tuned damping wave energy converter 2.
It will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed embodiments without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the disclosure covers modifications and variations provided that they fall within the scope of the following claims and their equivalents.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202311010448.7 | Aug 2023 | CN | national |
