Offshore floating experimental platform with wave energy conversion device, control system and offshore wind and wave combined power generation experimental platform

Abstract

The embodiments of the present invention disclose an offshore floating experimental platform, a control system, and an offshore wind-wave combined power generation experimental platform containing a wave energy conversion device, which include a floating structure, an energy absorption structure, and a driving structure. The energy absorption structure is arranged around the floating structure, and the energy absorption structure includes a connecting arm and a float. The float can be placed in the water and rise and fall with the waves to drive the connecting arm to move. The connecting arm and the power generation component are connected by an energy transmission structure. The driving structure includes a driving component and a transmission component. The transmission component is connected to the connecting arm. The transmission component and the driving component have a connected state and a disconnected state. In the connected state, the driving component drives the connecting arm to move to a predetermined position and remains stationary through the transmission component. In the disconnected state, the connecting arm is not controlled by the driving component. By providing the driving component and the transmission component, it helps to ensure the stability of the floating structure and adapt to more sea conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore power generation, and in particular to an offshore floating experimental platform including a wave energy conversion device, a control system, and an offshore wind-wave combined power generation experimental platform. Background Art

[0002] With the continuous depletion of traditional fossil energy and the gradual deterioration of global climate change, vigorously developing green energy has become a universal consensus among countries around the world. Deep ocean waters contain highly energy-dense and widely distributed wave energy. Based on global wind and wave models verified and calibrated with satellite altimeter data and buoy data from the World Wave Database, global wave energy is estimated to be 32,000 TWh annually. Extracting and utilizing this energy will have significant implications for global environmental protection.

[0003] Related technologies provide a device for generating electricity from wave energy at sea, effectively utilizing wave energy for power generation. In deeper waters, traditional fixed support foundations are less feasible, making the use of floating support foundations inevitable. However, stable operation requires resistance to capsizing under the combined effects of wind and waves. Floating test platforms containing wave energy conversion devices in related technologies are prone to capsizing in harsh environments, resulting in inoperable operations. Summary of the Invention

[0004] Based on this, it is necessary to address the above problems and propose an offshore floating experimental platform containing a wave energy conversion device, a control system and an offshore wind and wave combined power generation experimental platform that can adapt to different sea conditions.

[0005] An embodiment of the present invention provides an offshore floating experimental platform including a wave energy conversion device, comprising:

[0006] a floating structure capable of floating on the water surface, wherein the floating structure has a power generation component;

[0007] a plurality of energy absorbing structures disposed around the floating structure, the energy absorbing structures comprising a connecting arm movably connected to the floating structure and a float disposed on the connecting arm, the float being capable of being placed in water and rising and falling with waves to drive the connecting arm to move, the connecting arm and the power generation component being connected via an energy transmission structure so that mechanical energy of the connecting arm is transmitted to the power generation component to generate electricity;

[0008] And a driving structure, which includes a driving component and a transmission component, part of the structure of the transmission component is connected to the connecting arm, and the transmission component and the driving component have a connected state and a disconnected state. When in the connected state, the driving component can drive the connecting arm to a predetermined position and remain stationary through the transmission component. When in the disconnected state, the connecting arm rises and falls with the waves and is not controlled by the driving component.

[0009] In some embodiments, it also includes an assembly structure installed on the floating structure, the transmission assembly and the connecting arm are coaxially rotatably connected to the assembly structure, one end of the transmission assembly is movably connected to the connecting arm, and the driving assembly can drive the transmission assembly to rotate, thereby driving the connecting arm to rotate coaxially.

[0010] In some embodiments, the drive assembly includes a power member arranged on the assembly structure, the output end of the power member is connected to a driving gear through a clutch, the transmission assembly includes a driven gear and a ring gear rotatably connected to the assembly structure, the ring gear is an arc structure arranged around its rotating axis, and the driven gear is engaged with the driving gear and the ring gear at the same time.

[0011] In some embodiments, the transmission assembly also includes a connecting component, the connecting component includes an intermediate plate connected to the ring gear at one end, the other end of the intermediate plate is coaxially rotatably connected to the assembly structure with the connecting arm, and the connecting component also includes a connecting block rotatably connected to the ring gear, and part of the structure of the connecting arm is passed through the connecting block.

[0012] In some embodiments, the connecting component further comprises a lower plate having one end rotatably connected to the connecting block, and an end of the lower plate away from the connecting block is coaxially rotatably connected to the assembly structure with the connecting arm;

[0013] The connecting component also includes an upper plate, one end of which is connected to the connection position between the middle plate and the gear ring, and the other end is connected to the connecting block. A reinforcement piece is also protruded from the gear ring along the extension direction of the gear ring.

[0014] In some embodiments, the connecting arm includes a rocker arm whose two ends are rotatably connected to the assembly structure and the float, and a strip plate whose two ends are rotatably connected to the assembly structure and the float, and the spacing between the connection points of the rocker arm and the strip plate on the assembly structure is equal to the spacing between the connection points of the rocker arm and the strip plate on the float.

[0015] In some embodiments, the energy transmission structure is a hydraulic structure, including a hydraulic cylinder and a hydraulic rod, one end of the hydraulic cylinder is rotatably connected to a first connecting member, the end of the first connecting member is fixedly connected to the connecting arm, one end of the hydraulic rod is rotatably connected to the floating structure through a second connecting member, and the other end is inserted into the hydraulic cylinder for telescopic movement, the oil inlet of the hydraulic cylinder is connected to the oil tank through an oil pipe, the oil outlet of the hydraulic cylinder is connected to a hydraulic motor through an oil pipe, the hydraulic motor is connected to the power generation component, and the oil outlet of the hydraulic motor is connected to the oil inlet of the oil tank.

[0016] In some embodiments, the hydraulic rod can divide the interior of the hydraulic cylinder into two independent first oil chambers and second oil chambers, and the first oil chamber and the second oil chamber are both provided with an oil port connected to an oil supply pipe, and the oil ports on the first oil chamber and the second oil chamber are both connected to two oil pipelines, one of the oil pipelines is connected to the oil tank through a one-way valve, so that the oil in the oil tank can flow into the first oil chamber and the second oil chamber, and the other oil pipeline is connected to the hydraulic motor through a one-way valve, so that the hydraulic oil in the first oil chamber and the second oil chamber can flow into the hydraulic motor.

[0017] In some embodiments, an assembly structure is provided on the floating structure, and the assembly structure includes an upper connecting seat and a lower connecting seat spaced apart on the floating structure, a box and a frame are provided on the upper connecting seat, the connecting arm and part of the structure of the transmission assembly are connected to the frame, the drive assembly is connected to the box, one end of the second connecting member is fixedly connected to the lower connecting seat, and the end of the hydraulic rod away from the hydraulic cylinder is rotatably connected to the second connecting block.

[0018] In some embodiments, the floating structure has spaced-apart tracks, each of which has concentric arc rails with different diameters. The upper connecting seat and the lower connecting seat are respectively connected to different tracks. A fixing plate is also connected between the upper connecting seat and the lower connecting seat, and the upper connecting seat and the lower connecting seat can be fixed to the track through the fixing plate.

[0019] In some embodiments, an energy storage battery is further provided on the floating structure, and the energy storage battery is connected to the power generation component through a transformer, so that the electric energy generated by the power generation component can be transferred to the energy storage battery for storage, and the energy storage battery is electrically connected to the power component in the drive assembly.

[0020] In some embodiments, the floating structure includes a column and a plurality of buoys arranged around the column, two adjacent buoys are fixedly connected by a cross brace, and the buoy and the column are fixedly connected by a cross brace and a diagonal brace, the column includes an energy conversion chamber and an energy storage chamber, the energy conversion chamber is provided with a hydraulic motor, a gearbox and a power generation component, and the energy storage chamber includes an energy storage battery and a transformer.

[0021] In some embodiments, the float includes a first end and a second end, one end of the first end and the second end are connected, and a circumferential dimension of the first end is smaller than an axial dimension of the second end.

[0022] In some embodiments, a control module is further included, and the control module signal is connected to an inclination sensor and a water level sensor. The inclination sensor is connected to the floating structure and is used to detect the inclination angle of the floating structure. The water level sensor is connected to the float and the floating structure and is used to monitor the draft of the float and the floating structure. The control module signal is connected to the drive assembly and can control the drive assembly to drive the transmission assembly to move in the connected state.

[0023] An embodiment of the present invention further provides a control system for the above-mentioned offshore floating experimental platform containing the wave energy conversion device, comprising:

[0024] A power control module, signal-connected to the energy storage module, the power control module being capable of controlling the energy storage module to supply power to the drive assembly;

[0025] a motion control module, electrically connectable to the drive assembly, capable of controlling the connection and disconnection between the drive assembly and the transmission assembly, and capable of controlling the drive assembly to drive the transmission assembly in the connected state to move;

[0026] and a sensor module, which includes a temperature and humidity sensor, a water level sensor, a tilt sensor, and a pressure sensor.

[0027] An embodiment of the present invention also provides an offshore wind-wave combined power generation experimental platform, comprising: wind power generation equipment and the above-mentioned offshore floating experimental platform containing a wave energy conversion device, the wind power generation equipment comprising a tower connected to the floating structure, a wind turbine motor arranged on the tower, and a blade assembly connected to the rotating end of the wind turbine motor, and the wind turbine motor is connected to the power generation component.

[0028] The embodiments of the present invention have the following beneficial effects:

[0029] According to the above-mentioned embodiment of the offshore floating experimental platform and platform control system containing a wave energy conversion device, by providing a movable connecting arm and a float, the float can rise and fall with the waves in the water, thereby driving the movement of the connecting arm, and then converting the wave fluctuations into mechanical energy for the movement of the connecting arm. When using the offshore floating experimental platform containing a wave energy conversion device, because the floating structure is directly floating on the sea surface, the sea conditions on the sea surface are not always suitable for power generation. When the wind and waves on the sea surface are strong, the floating structure is more likely to overturn under the action of the waves, posing a threat to the safety of the device and the power generation efficiency. By providing a drive assembly and a transmission assembly, it can be switched between a connected state and a disconnected state. When the sea conditions are relatively suitable for power generation and there is no risk of the floating structure overturning, the drive assembly and the transmission assembly are in a disconnected state, so that the float and the connecting arm can be used to collect wave energy. When the sea conditions are not suitable for power generation, the transmission assembly and the drive assembly are connected, and the connecting arm can be driven by the drive assembly according to the tilt direction of the floating structure. Specifically, the connecting arm located in the inclined direction is pressed downward into the water so that the float can fully enter the water. In this way, the buoyancy of the seawater on the float located in the inclined direction will increase, and this buoyancy can withstand the force that causes the floating structure to tilt. At the same time, the connecting arm located on the opposite side of the inclined direction of the floating structure can be driven to rise through the driving assembly to lift the float out of the sea. At this time, the float lifted out of the sea is not affected by the buoyancy, and the gravity of the float and the connecting arm can prevent the floating structure from tilting.

[0030] Therefore, by setting up a drive component and a transmission component, when the sea conditions are suitable for power generation, the two are in a disconnected state, allowing the float and the connecting arm to move with the waves. When the sea conditions are not suitable for power generation and the floating structure is at risk of tipping over, the drive component and the transmission component are connected. The drive component can control the float located in the inclination direction of the floating structure to sink, and at the same time control the float located on the opposite side of the inclination direction of the floating structure to rise, so that the floating structure is subjected to a stronger buoyancy in the inclination direction and the gravity of the float on the opposite side of the inclination direction. The buoyancy and gravity form a torsional force opposite to the inclination direction, which helps to ensure the stability of the floating structure and enables the offshore floating experimental platform containing a wave energy conversion device to adapt to more sea conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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 only 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.

[0032] in:

[0033] Figure 1 A schematic structural diagram of an offshore floating experimental platform including a wave energy conversion device provided according to the present invention is shown;

[0034] Figure 2 An exploded view of a portion of the structure of an offshore floating experimental platform including a wave energy conversion device provided according to the present invention is shown;

[0035] Figure 3 A cross-sectional view of an offshore floating experimental platform including a wave energy conversion device provided according to the present invention is shown;

[0036] Figure 4 A schematic diagram of the hydraulic circuit structure of the hydraulic structure provided by the present invention is shown;

[0037] Figure 5 It shows a schematic structural diagram of a floating structure provided according to the present invention;

[0038] Figure 6 shows a cross-sectional view of a buoy provided according to the present invention;

[0039] Figure 7 shows a cross-sectional view of a column provided according to the present invention;

[0040] Figure 8 It shows a schematic structural diagram of a control system provided according to the present invention;

[0041] Figure 9 It shows a schematic structural diagram of an offshore wind-wave combined power generation experimental platform provided according to the present invention;

[0042] Figure 10 A top view of an offshore floating experimental platform including a wave energy conversion device provided according to the present invention is shown.

[0043] Description of main component symbols:

[0044] 1. Floating structure; 11. Column; 111. Energy storage chamber; 1111. Energy storage battery; 112. Energy conversion chamber; 12. Buoy; 121. First cylinder end; 1211. Upper chamber; 1212. Lower chamber; 122. Second cylinder end; 13. Cross brace; 14. Diagonal brace; 15. Track; 151. Buckle; 2. Assembly structure; 21. Box; 22. Upper connecting seat; 23. Lower connecting seat; 241. Perforation; 242. Notch; 24. Fixing plate; 25. Frame; 3. Drive structure; 31. Transmission assembly; 311. Driven gear; 312. Ring gear; 3121. Reinforcement member; 313. Connecting member; 3131. Upper plate; 3132. Middle plate; 3133. Lower plate; 3134. Connecting block; 32. Drive assembly; 321. Drive Force member; 322, driving gear; 323, installation box; 4, hydraulic structure; 41, first connecting member; 42, hydraulic cylinder; 421, first oil chamber; 422, second oil chamber; 43, hydraulic rod; 44, second connecting member; 445, oil tank; 5, energy absorption structure; 51, connecting arm; 511, rocker arm; 512, slat; 52, float; 521, connecting plate; 6, sensor module; 61, temperature and humidity sensor; 62, pressure sensor; 63, tilt sensor; 64, water level sensor; 7, power transmission control module; 8, motion control module; 90, transformer; 91, hydraulic motor; 92, gearbox; 93, power generation component; 94, filter; 95, heat exchanger; 100, tower; 110, blade assembly; 120, fan motor. DETAILED DESCRIPTION

[0045] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0046] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] With the continuous depletion of traditional fossil fuels and the gradual deterioration of global climate change, the vigorous development of green and renewable energy has become a universal consensus worldwide. Against this backdrop, green power generation technologies such as solar, wind, and wave energy are booming globally. Among them, wind energy, with its abundant reserves, low costs, and early development, has become one of the most commercialized and widely used green energy sources.

[0049] At the same time, ocean energy in the deep ocean has a high energy density and is widely distributed. Based on a global wind and wave model verified and calibrated by satellite altitude data and buoy data from the World Ocean Wave Database, the global annual wave energy is estimated to be 32,000 TWh (Tera Watt Hour(s)). If this energy can be converted and extracted, it will be of great significance to global environmental protection. By converting the energy of the waves, the energy of the waves can be extracted. Wave energy is collected by different types of wave energy conversion devices, and then transmitted to a generator by a power extraction device, thereby converting the wave energy into electrical energy.

[0050] Due to the growing trend toward offshore wind power and the abundant wave energy in the deep sea, combining different types of green renewable energy devices has become a research frontier. Deep and deep oceans offer abundant reserves of both wind and wave energy. A wind-wave integrated platform consisting of floating wind turbines and wave energy converters can fully utilize both resources, while reducing projected power generation costs and achieving complementary advantages. For example, integrating the floaters onto a floating foundation allows them to share infrastructure such as mooring systems, making maintenance and repair easier, thus helping to reduce deployment costs. In extreme sea conditions, the floaters can be parked on the foundation, preventing structural damage and reducing the load on the floating wind turbines. Conversely, the electricity generated by the floaters can compensate for power shortfalls during wind turbine downtime, improving power generation stability. The movement of the floating foundation can also adversely affect the installation, operation, and maintenance of floating wind turbines. By integrating the floaters, the floaters can be treated as actively controlled actuators, reducing foundation motion, avoiding structural fatigue, and extending their lifespan.

[0051] On the one hand, an embodiment of the present invention provides an offshore floating experimental platform containing a wave energy conversion device, which can be used alone for collecting and converting wave energy at sea, and can also be used for energy collection and conversion of a combined wind and wave energy platform.

[0052] In one embodiment, see Figure 1 and Figure 2 The offshore floating experimental platform containing a wave energy conversion device comprises a floating structure 1, multiple energy absorption structures 5, and a drive structure 3. The floating structure 1 serves as the floating foundation for the entire power generation device, enabling it to float on the water surface. It also serves as a component mounting environment, housing components 93, such as generators, for receiving converted wave energy, such as mechanical energy, and utilizing this energy to generate electricity. Furthermore, the floating structure 1 serves as a sealed environment, with a confined space within which most components are mounted to prevent them from getting wetted by seawater.

[0053] Multiple energy-absorbing structures 5 are arranged around the floating structure 1. These structures include connecting arms 51 movably connected to the floating structure 1 and floats 52 mounted on the connecting arms 51. The floats 52 are designed to rise and fall with the waves in the water. As they rise and fall, the floats 52 naturally move the connecting arms 51, thereby converting wave energy into mechanical energy for the movement of the connecting arms 51. The connecting arms 51 and the power generation component 93 are connected via an energy transmission structure, allowing the mechanical energy of the connecting arms 51 to be transmitted to the power generation component 93 for power generation.

[0054] The drive structure 3 includes a drive assembly 32 and a transmission assembly 31. Part of the transmission assembly 31 is connected to the connecting arm 51. The transmission assembly 31 and the drive assembly 32 can be in a connected state and a disconnected state. When the transmission assembly 31 and the drive assembly 32 are connected, the drive assembly 32 can drive the connecting arm 51 through the transmission assembly 31 to move to a predetermined position and remain stationary. When the transmission assembly 31 and the drive assembly 32 are disconnected, the movement of the connecting arm 51 is not controlled by the drive assembly 32, and the movement of the connecting arm 51 is driven by the float 52 to rise and fall with the waves.

[0055] By providing a movable connecting arm 51 and a float 52, the float 52 can rise and fall with the waves in the water, thereby driving the movement of the connecting arm 51, thereby converting the wave fluctuations into mechanical energy for the movement of the connecting arm 51. When using an offshore floating experimental platform containing a wave energy conversion device, since the floating structure 1 is directly floated on the sea surface, the sea conditions on the sea surface are not always suitable for power generation. For example, if the wind on the sea surface is strong, the wind and waves on the sea surface are large. In this case, the floating structure 1 is more likely to overturn under the action of the waves. After overturning, it can no longer collect and convert wave energy. By providing a drive assembly 32 and a transmission assembly 31, it can be switched between a connected state and a disconnected state. When the sea conditions are relatively suitable for power generation, there is no risk of the floating structure 1 overturning, and the drive assembly 32 and the transmission assembly 31 are disconnected to collect wave energy using the float 52 and the connecting arm 51. When the sea conditions are not suitable for power generation, the transmission assembly 31 and the drive assembly 32 are connected. At this time, the drive assembly 32 can drive the connecting arm 51 to move according to the tilt direction of the floating structure 1. Specifically, the connecting arm 51 located in the inclined direction is pressed downward into the water so that the float 52 can fully enter the water. In this way, the buoyancy of the seawater on the float 52 located in the inclined direction will increase, and the buoyancy can withstand the force that causes the floating structure 1 to tilt. At the same time, the connecting arm 51 located on the opposite side of the inclined direction of the floating structure 1 can be driven to rise through the driving component 32 to lift the float 52 out of the sea surface. At this time, the float 52 lifted out of the sponge is not affected by the buoyancy, and the floating structure 1 can be prevented from tilting due to the gravity of the float 52 and the connecting arm 51 themselves.

[0056] Therefore, by setting the drive component 32 and the transmission component 31, when the sea conditions are suitable for power generation, the two are in a disconnected state, so that the float 52 and the connecting arm 51 can move with the waves. When the sea conditions are not suitable for power generation and the floating structure 1 is at risk of tipping over, the drive component 32 and the transmission component 31 are connected. The drive component 32 can control the float 52 located in the tilt direction of the floating structure 1 to sink, and at the same time control the float 52 located on the opposite side of the tilt direction of the floating structure 1 to rise, so that the floating structure 1 is subjected to a stronger buoyancy in the tilt direction and the gravity of the float 52 on the opposite side of the tilt direction. The buoyancy and gravity form a torsional force opposite to the tilt direction, which helps to ensure the stability of the floating structure 1, so that the offshore floating experimental platform containing the wave energy conversion device can adapt to more sea conditions and is not prone to capsizing even in severe sea conditions, thereby ensuring normal operation.

[0057] The above configuration in which the corresponding energy absorbing structure 5 is adjusted to adapt to the sea conditions that are not suitable for power generation and the overall motion response of the platform is minimized under this configuration is called the optimal stable configuration. For example, please refer to Figure 10 , Figure 10This is an embodiment of the present application. As can be seen from the figure, it is provided with multiple groups of energy absorbing structures 5, and each group is provided with three energy absorbing structures 5. When the sea conditions are not suitable for power generation and the entire experimental platform is tilted toward the three energy absorbing structures 5 below, the three energy absorbing structures 5 below can be controlled to press down so that the floats 52 can be located in the water to the maximum extent, increasing the buoyancy of the three floats 52 below. This buoyancy is opposite to the tilt direction, and the remaining six energy absorbing structures 5 are lifted, so that the buoyancy of the upper left and upper right floats is lifted into the air (whether all floats 52 need to be lifted into the air is determined based on actual conditions. If only some floats 52 are lifted into the air, the experimental platform can be prevented from capsizing, and only some floats 52 can be driven to lift). The floats 52 lifted into the air are affected by gravity. Gravity and the buoyancy of the floats 52 below form a torsional force, twisting the entire experimental platform in the direction opposite to the tilt direction, preventing the experimental platform from capsizing. The configuration at this time is a stable configuration.

[0058] It should also be noted that during the adjustment of float 52, the motion response under different sea conditions needs to be measured. The aforementioned lifting and pressing of float 52 are not the only solutions. The motion response needs to be measured according to different sea conditions. That is, in different sea conditions, different numbers of floats 52 are pressed down and the degree of the pressing down, and different numbers of floats 52 are lifted and the degree of the lifting. In this case, "the number of floats 52 pressed down, the degree of the pressing down, the number of floats 52 lifted up, the degree of the lifting, the position of the lifted float 52, and the position of the pressed float 52" are considered as the six elements of a solution. The difference in each element will lead to a different solution. By measuring the motion response of each solution in different sea conditions, the solution with the smallest motion response can be selected as the most stable configuration.

[0059] Of course, in practical applications, it is not limited to setting three energy absorbing structures 5 in each group, and one, two, four or more energy absorbing structures can also be set.

[0060] In one embodiment, see Figures 1 to 3 The offshore floating experimental platform containing a wave energy conversion device also includes an assembly structure 2 mounted on a floating structure 1. A transmission assembly 31 and a connecting arm 51 are coaxially rotatably connected to the assembly structure 2. One end of the transmission assembly 31 is movably connected to the connecting arm 51. The drive assembly 32 can drive the transmission assembly 31 to rotate, thereby driving the connecting arm 51 to rotate coaxially. By rotating the connecting arm 51, when the float 52 rises and falls with the waves, the end of the connecting arm 51 away from its connection with the assembly structure 2 will also rise and fall with the waves, thereby driving the connecting arm 51 to rotate. It should be noted that the transmission assembly 31 and the connecting arm 51 move in a direction perpendicular to the rotation axis of the transmission assembly 31 or the connecting arm 51.

[0061] In a specific embodiment, the drive assembly 32 includes a power member 321 arranged on the assembly structure 2, and the output end of the power member 321 is connected to the driving gear 322 through a clutch. The transmission assembly 31 includes a driven gear 311 and a ring gear 312 rotatably connected to the assembly structure 2. The ring gear 312 is an arc structure arranged around its rotating axis, and the driven gear 311 is engaged with the driving gear 322 and the ring gear 312 at the same time.

[0062] Specifically, the power member 321 is preferably a motor, with a clutch provided on the protruding end of the motor. The protruding end of the motor is connected to the driving gear 322 via the clutch. The clutch can control the connection and disconnection between the output end of the motor and the driving gear 322. When connected, the output movement of the motor can drive the driving gear 322 to rotate. When disconnected, the output end of the motor rotates, but the driving gear 322 does not move. The clutch is a clutch known in the art that can disconnect and connect the motor and the driving gear 322. In this embodiment, an electromagnetic clutch is preferably used, and the opening and closing of the clutch is controlled by powering on and off.

[0063] When the power member 321 drives the driving gear 322 to rotate, the rotation is transmitted to the driven gear 311, thereby driving the ring gear 312 to move. To ensure that the ring gear 312 can rotate around its axis, the shape of the ring gear 312 is set to be circular arc, and the center of the ring gear 312 is located on its axis. This ensures that the ring gear 312 can smoothly move around its axis under the drive of the driven gear 311. The end of the ring gear 312 away from the meshing with the driven gear 311 is used for movable connection with the connecting arm 51.

[0064] In a specific embodiment, the transmission assembly 31 also includes a connecting component 313, the connecting component 313 includes an intermediate plate 3132 whose one end is connected to the ring gear 312, and the other end of the intermediate plate 3132 is coaxially rotatably connected to the connecting arm 51 on the assembly structure 2, the connecting component 313 also includes a connecting block 3134 rotatably connected to the ring gear 312, and part of the structure of the connecting arm 51 is passed through the connecting block 3134.

[0065] It should be noted that the curved inner side of the ring gear 312 has teeth. To prevent interference with the meshing between the ring gear 312 and the driven gear 311, the end of the intermediate plate 3132 is pivotally connected to the side wall of the ring gear 312, that is, on the plane between the inner and outer arcuate surfaces of the ring gear 312. Furthermore, since the driven gear 311 has a certain thickness, to prevent the driven gear 311 from abutting and becoming stuck against the intermediate plate 3132 during meshing between the two gears, a connecting protrusion (not shown) can be provided on the side wall of the ring gear 312, and the end of the intermediate plate 3132 is pivotally connected to the end of the connecting protrusion away from the ring gear 312. Furthermore, in order to ensure the stability of the connection and the stability of the rotation of the ring gear 312, an intermediate plate 3132 is connected to both side walls of the ring gear 312. The connection positions of the two intermediate plates 3132 on the ring gear 312 are arranged opposite each other, and the other end of the intermediate plate 3132 is coaxially rotatably connected to the assembly structure 2.

[0066] The connecting arm 51 is inserted into the connecting block 3134, with the length of the connecting arm 51 perpendicular to its rotational direction. The rotational trajectory of the portion where the connecting arm 51 connects to the connecting block 3134 is aligned with the rotational trajectory of the ring gear 312. This allows the connecting block 3134 to coaxially rotate with the ring gear 312 as the ring gear 312 rotates. Furthermore, the connecting block 3134 can also move along the length of the connecting arm 51 as the connecting block 3134 rotates, thereby driving the connecting arm 51 to rotate while intersecting the connecting block 3134.

[0067] In a more specific embodiment, the connecting component 313 also includes a lower plate 3133 whose one end is rotatably connected to the connecting block 3134, the lower plate 3133 is parallel to the connecting arm 51, and the end of the lower plate 3133 away from the connecting block 3134 is coaxially rotatably connected to the assembly structure 2 with the connecting arm 51.

[0068] One end of the lower plate 3133 is rotatably connected to the end of the connecting block 3134 away from the ring gear 312, and the end of the lower plate 3133 is connected to the side wall of the connecting block 3134. The so-called side wall is a relative side wall. For example, in the present application, the ring gear 312 is rotatably connected to the middle position of one end of the connecting block 3134, and the connecting arm 51 is provided at the middle position of the other end of the connecting block 3134. In this case, the side wall of the connecting block 3134 is the end wall that sandwiches the end of the ring gear 312 or the connecting arm 51. Connecting the lower plate 3133 to the side wall of the connecting block 3134 does not hinder the movement between the connecting arm 51 and the connecting block 3134. The lower plate 3133 is set to be parallel to the connecting arm 51 because when the ring gear 312 rotates, it drives the connecting block 3134 to rotate, and when the connecting block 3134 rotates, it drives the lower plate 3133 to rotate. The setting of the lower plate 3133 can limit the rotation position of the connecting block 3134 away from the end of the ring gear 312. Setting the lower plate 3133 to be parallel to the connecting arm 51 can limit the rotation position of the end of the connecting block 3134 away from the ring gear 312 to be suitable for the connecting arm 51 to pass through.

[0069] In order to better restrict the connection block 3134, two spaced lower plates 3133 are usually provided, which are respectively located at the two side walls of the connection block 3134, and the connection block 3134 is sandwiched in the middle.

[0070] In addition, when the ring gear 312 rotates, its end near the connecting block 3134 is susceptible to external forces. To increase its strength, the connecting component 313 also includes an upper plate 3131. One end of the upper plate 3131 is connected to the connection between the intermediate plate 3132 and the ring gear 312, and the other end is connected to the connecting block 3134. Preferably, the upper plate 3131 is rotatably connected to the end where the connecting block 3134 is connected to the ring gear 312, and is connected to the side wall of the connecting block 3134. To increase the protective strength, two upper plates 3131 can be spaced apart, with the two upper plates 3131 sandwiching the ring gear 312. A reinforcement member 3121 is also provided at the end of the ring gear 312 away from the connecting block 3134. The reinforcement member 3121 protrudes from the ring gear 312 along the extension direction of the ring gear 312.

[0071] In one embodiment, see Figure 1 and Figure 2 The connecting arm 51 includes a swing rod 511 having two ends rotatably connected to the assembly structure 2 and the float 52, and a strip 512 having two ends rotatably connected to the assembly structure 2 and the float 52. The swing rod 511 is inserted into the connecting block 3134. The length of the swing rod 511 is perpendicular to its rotation axis. The swing rod 511 is preferably a cylindrical rod, but it can also be a polygonal rod or other shapes, which are not limited in this application.

[0072] The pendulum 511 and the strip 512 are parallel, and the distance between the connection points of the pendulum 511 and the strip 512 on the assembly structure 2 is equal to the distance between the connection points of the pendulum 511 and the strip 512 on the float 52. In other words, the pendulum 511, the strip 512, the assembly structure 2, and the float 52 form a parallelogram structure. This structure ensures that the upper surface of the float 52 is parallel to the sea surface when the float 52 rises and falls in the water, and the end surface of the float 52 in contact with the seawater is not easily deflected.

[0073] It should be noted that the plane of the float 52 that directly contacts the sea surface is preferably an arcuate surface. The surface connecting the rocker 511 and the strip 512 is a flat surface, and a connecting plate 521 is protruding from this plane. Both the rocker 511 and the strip 512 are rotatably connected to this connecting plate 521. Two strips 512 are provided, spaced apart. The provision of two strips 512 increases the strength of the connection. Two connecting plates 521 are spaced apart at the flat end of the float 52. A connecting shaft is provided between the two connecting plates 521. The end of the rocker 511 is rotatably connected to this connecting shaft, while the end of the strip 512 is rotatably connected to the end surface of the connecting plate 521 facing away from the connecting shaft.

[0074] In one embodiment, see Figures 1 to 3 The energy transmission structure can transmit the energy generated by the waves to the power generation component 93 for power generation. In this embodiment, the energy transmission structure is a hydraulic structure 4. The hydraulic structure 4 includes a hydraulic cylinder 42 and a hydraulic rod 43. The hydraulic cylinder 42 is used for the flow of hydraulic oil. One end of the hydraulic cylinder 42 is rotatably connected to the first connecting member 41, and the end of the first connecting member 41 is fixedly connected to the connecting arm 51. Specifically, the first connecting member 41 is connected to the rocker arm 511 mentioned above. The first connecting member 41 can be composed of two docking structures, and the end of one of the docking structures is rotatably connected to the hydraulic cylinder 42. The two docking structures can be fixedly connected by screws. A groove for clamping the rocker arm 511 is provided between the two docking structures. The rocker arm 511 is inserted into the groove, and then the two docking structures are tightened by screws to fix the first connecting member 41 and the rocker arm 511.

[0075] One end of the hydraulic rod 43 is rotatably connected to the floating structure 1 through the second connecting member 44, and the other end is inserted into the hydraulic cylinder 42 for telescopic movement. The cooperation between the hydraulic rod 43 and the hydraulic cylinder 42 can form an oil suction and pumping structure.

[0076] The oil inlet of the hydraulic cylinder 42 is connected to the oil tank 445 through an oil pipe, and the oil outlet of the hydraulic cylinder 42 is connected to the hydraulic motor 91 through an oil pipe. The hydraulic motor 91 is connected to the power generation component 93, and the oil outlet of the hydraulic motor 91 is connected to the oil inlet of the oil tank 445.

[0077] When the rocker arm 511 moves, it can drive the telescopic movement between the hydraulic cylinder 42 and the hydraulic rod 43. When the hydraulic cylinder 42 and the hydraulic rod 43 are telescoped, the hydraulic oil can be drawn from the oil tank 445, and the hydraulic oil in the hydraulic cylinder 42 can be discharged to the hydraulic motor 91, so that the hydraulic motor 91 rotates to drive the power generation component 93, and the hydraulic oil flowing out of the hydraulic motor 91 after doing work can flow back into the oil tank 445.

[0078] It should be noted that a gearbox 92 may be provided between the hydraulic motor 91 and the power generation component 93. The rotation of the hydraulic motor 91 drives the gearbox 92, which in turn drives the power generation component 93 to generate electricity. By providing the gearbox 92, the efficiency of power generation can be increased.

[0079] It should also be noted that there is no limitation on whether the hydraulic cylinders 42 absorb oil when they are relatively compressed and discharge oil when they are relatively stretched, or absorb oil when they are relatively stretched and discharge oil when they are relatively compressed, and it can be determined according to actual conditions.

[0080] In a specific embodiment, please combine Figure 4 The end of the hydraulic rod 43 has a piston that divides the interior of the hydraulic cylinder 42 into two independent oil chambers, a first oil chamber 421 and a second oil chamber 422. Each of the first and second oil chambers 421 and 422 is provided with an oil port connected to an oil supply pipe. Because both oil chambers are sealed, when the hydraulic rod 43 moves relative to the hydraulic cylinder 42, it squeezes the interior of one of the oil chambers, thereby forcing hydraulic oil out of the port. The other oil chamber, in a vacuum state, draws oil from the port. Reversing the direction of the hydraulic rod 43's movement reverses the flow of oil into and out of the chambers.

[0081] Specifically, the oil ports on the first oil chamber 421 and the second oil chamber 422 are connected to two oil pipelines, one of which is connected to the oil tank 445 through a one-way valve. The one-way valve is set to be in a flow-stop state when the oil chamber is squeezed, and the hydraulic oil in the oil chamber will not flow into the oil tank 445. However, when the oil chamber is in a vacuum state, oil can be sucked from the oil tank 445, so that the oil in the oil tank 445 can flow into the first oil chamber 421 and the second oil chamber 422.

[0082] The other oil pipeline is connected to the hydraulic motor 91 through a one-way valve. The one-way valve there is set to only squeeze the hydraulic oil in the first oil chamber 421 and the second oil chamber 422 into the hydraulic motor 91. When the first oil chamber 421 and the second oil chamber 422 are in a vacuum state, the pipeline between the hydraulic motor 91 and the oil chamber is in a disconnected state.

[0083] Taking the example of the hydraulic rod 43 compressing the hydraulic cylinder 42, squeezing the first oil chamber 421 and creating a vacuum in the second oil chamber 422, as an example, a specific operating principle is as follows: The first and second oil chambers 421 and 422 initially contain a certain amount of hydraulic oil. When the first oil chamber 421 is squeezed, the hydraulic oil in the first oil chamber 421 can flow through the pipeline connected to the hydraulic motor 91 to the hydraulic motor 91, while the second oil chamber 422 is in a vacuum state. At this point, hydraulic oil can be drawn from the oil tank 445 through the pipeline connected to the oil tank 445 to the second oil chamber 422. When the second oil chamber 422 is compressed, the hydraulic oil in the second oil chamber 422 can flow through the pipeline connected to the hydraulic motor 91 to the hydraulic motor 91, while the first oil chamber 421 is in a vacuum state, allowing hydraulic oil to be drawn from the oil tank 445. In this way, the relative expansion and contraction between the hydraulic rod 43 and the hydraulic rod can deliver hydraulic oil to the hydraulic motor 91, driving it to rotate, thereby driving the generator 93 to generate electricity. In other words, the rise and fall of waves can be collected and converted to drive the primary hydraulic oil to flow to the hydraulic motor 91 to successfully generate electricity.

[0084] It is worth mentioning that a filter 94 and a heat exchanger 95 are connected between the hydraulic motor 91 and the oil tank 445. The filter 94 can filter impurities in the hydraulic oil, and the heat exchanger 95 can reduce the heat of the hydraulic oil.

[0085] In addition, the floating structure 1 is provided with an energy storage battery 1111. The energy storage battery 1111 is connected to the power generation component 93 via the transformer 90, so that the electrical energy generated by the power generation component 93 can be transferred to the energy storage battery 1111 for storage. The energy storage battery 1111 can be electrically connected to the power element 321 in the drive assembly 32 to serve as a power source for the power element 321. This saves the power required by the power element 321.

[0086] In one embodiment, see Figures 1 to 3 The assembly structure 2 is arranged on the floating structure 1. The assembly structure 2 includes an upper connecting seat 22 and a lower connecting seat 23 which are spaced apart on the floating structure 1. The upper connecting seat 22 is provided with a box 21 and a frame 25. The connecting arm 51 and part of the structure of the transmission assembly 31 are connected to the frame 25, and the drive assembly 32 is connected to the box 21.

[0087] Specifically, the drive assembly 32 is further provided with a mounting box 323, which can be fixedly connected to the housing 21 via screws. The power member 321 is mounted within the mounting box 323. The driving gear 322 and the driven gear 311 are both rotatably connected to the housing 21, with the driving gear 322 located within the housing 21. The clutch of the aforementioned middle lever is also located within the housing 21. The intermediate plate 3132, the rocker arm 511, and the strip plate 512 are all rotatably connected to the frame 25.

[0088] One end of the second connecting member 44 is fixedly connected to the lower connecting seat 23 , and one end of the hydraulic rod 43 away from the hydraulic cylinder 42 is rotatably connected to the second connecting block 3134 .

[0089] In a specific embodiment, the floating structure 1 has spaced rails 15 arranged from top to bottom on the floating structure 1. Each rail 15 has two concentric curved rails with different diameters. To ensure the strength between the two curved rails, a buckle 151 is connected between the two curved rails, which prevents them from bending. The upper connecting seat 22 and the lower connecting seat 23 are respectively connected to different rails 15, with the upper connecting seat 22 connected to the upper rail 15 and the lower connecting seat 23 connected to the lower rail 15.

[0090] It should be noted that the upper and lower connecting bases 22 and 23 have identical structures for connecting to the track 15. This description focuses solely on the connection between the upper and lower connecting bases 22 and the track 15. The upper connecting base 22 is perforated with two through-holes 241, the shape and dimensions of which match the outer dimensions of the two curved rails of the same track 15. Because the track 15 is curved, the extension direction of the through-holes 241 aligns with the extension direction of the curved track 15, allowing the curved rails to fit within the through-holes 241.

[0091] In addition, a notch 242 is formed at one end of the upper connector 22, corresponding to each through-hole 241. The two notches 242 divide the end of the upper connector 22 into three spaced-apart substructures. The upper connector 22 is preferably made of an elastic material. This means that the substructures of the upper connector 22 formed by the notches 242 can move closer or further apart, thereby expanding the notches 242 and allowing the curved rail to pass through the expanded notches 242 and into the through-holes 241.

[0092] It is worth mentioning that a fixing plate 24 is connected between the upper connecting seat 22 and the lower connecting seat 23, and the two ends of the fixing plate 24 are fixedly connected to the upper connecting seat 22 and the lower connecting seat 23 by screws. The three substructures formed by the gap 242 are each provided with a threaded hole. Part of the structure of the fixing plate 24 corresponds to the threaded hole, and this part of the structure is provided with a screw. By matching the screw with the threaded hole, the two adjacent substructures can be brought closer together, so that the perforation 241 tightens the arc rail, and the upper connecting seat 22 is fixedly connected to the track 15. If the position of the upper connecting seat 22 and the lower connecting seat 23 is desired, it is only necessary to loosen the screw. Therefore, by tightening the screw, the position of the upper connecting seat 22 and the lower connecting seat 23 can be fixed, and by loosening the screw, the upper connecting seat 22 and the lower connecting seat 23 can be moved, so that a corresponding number of energy absorbing structures 5 can be arranged on the track 15.

[0093] In one embodiment, see Figure 1、 Figure 3 、 Figures 5 to 7 The floating structure 1 includes a column 11 and a plurality of buoys 12 arranged around the column 11. Two adjacent buoys 12 are fixedly connected by a cross brace 13, and the buoy 12 and the column 11 are fixedly connected by a cross brace 13 and a diagonal brace 14.

[0094] The shapes of the columns 11 and buoys 12 are not limited. Preferably, the column 11 is cylindrical, and multiple buoys 12 are arranged around the column 11 at equal intervals around the central axis of the column 11. A cross brace 13 is fixedly connected between the top ends of two adjacent buoys 12, and a cross brace 13 is also fixedly connected between their bottom ends. A cross brace 13 is fixedly connected between the top ends of the buoys 12 and the top ends of the columns 11, and a cross brace 13 is also fixedly connected between their bottom ends. A diagonal brace 14 is fixedly connected between the bottom ends of the buoys 12 and the top ends of the columns 11, or a diagonal brace 14 is fixedly connected between the top ends of the buoys 12 and the bottom ends of the columns 11.

[0095] The buoy 12 includes a first end 121 and a second end 122. The first end 121 and the second end 122 are both cylindrical and coaxial. The first end 121 and the second end 122 are connected at one end, and the circumferential dimension of the first end 121 is smaller than the axial dimension of the second end 122.

[0096] The two ends of the two arc-shaped rails of the same track 15 are respectively connected to two adjacent buoys 12, wherein the track 15 is connected between the ends of the two adjacent first cylinder ends 121 away from the second cylinder end 122, and the track 15 is also connected between the ends of the two adjacent first cylinder ends 121 close to the second cylinder end 122.

[0097] When placing, the second tube end 122 is placed on the water surface. At this time, the end of the first tube end 121 away from the second tube end 122 is the top of the float 12 mentioned above, and the end of the second tube end 122 away from the first tube end 121 is the bottom of the float 12 mentioned above.

[0098] It should be noted that the first cylinder end 121 has an upper chamber 1211 and a lower chamber 1212, with the lower chamber 1212 being located near the second cylinder end 122. The upper chamber 1211 can be used to house the oil tank 445 of the hydraulic structure 4, and can also be used to accommodate the filter 94 and heat exchanger 95 connected between the oil tank 445 and the hydraulic motor 91. The lower chamber 1212 can be used to house ballast members, such as metal or stone. By varying the mass and position of the ballast members within the buoy 12, the center of gravity of the floating structure 1 can be adjusted. Of course, a cavity structure can also be provided within the second cylinder end 122, and ballast members can also be provided within the second cylinder end 122.

[0099] The column 11 includes an energy conversion chamber 112 and an energy storage chamber 111. The energy storage chamber 111 is located below the energy conversion chamber 112. The energy conversion chamber 112 can be used to accommodate a hydraulic motor 91, a gearbox 92 and a power generation component 93. The energy storage chamber 111 is used to accommodate an energy storage battery 1111 and a transformer 90.

[0100] In a specific embodiment, please refer to Figure 10 There are three buoys 12 , which are arranged at equal intervals around the central axis of the column 11 , and a plurality of energy absorbing structures 5 are arranged between two adjacent buoys 12 , and a plurality of energy absorbing structures 5 are arranged between the two buoys 12 .

[0101] In the present application, three energy absorbing structures 5 are arranged between two adjacent buoys 12, and the energy absorbing structures 5 are connected to the track 15 through the assembly structure 2. Such arrangement of the energy absorbing structures 5 can facilitate the formation of the optimal stable configuration of the entire offshore floating experimental platform containing the wave energy conversion device.

[0102] It is worth mentioning that the horizontal brace 13, diagonal brace 14 and track 15 mentioned above can not only be used as a connection, with a hollow structure with openings at both ends set inside, but can also be used as connecting pipes for oil circuits, lines and circuits. The end openings of the horizontal brace 13, diagonal brace 14 and track 15 are connected to the chamber of the float 12, and the oil circuits, lines and circuits can enter the interior from the openings at the ends of the horizontal brace 13, diagonal brace 14 or track 15 for storage.

[0103] In one embodiment, the offshore floating experimental platform containing a wave energy conversion device further includes a control module having a control program. The control module is signal-connected to an inclination sensor 63 and a water level sensor 64. The inclination sensor 63 is connected to the floating structure 1 and is used to detect the inclination angle of the floating structure 1. The water level sensor 64 is connected to the float 52 and the floating structure 1 and is used to monitor the draft of the float 52 and the floating structure 1. The control module is signal-connected to the drive assembly 32 and can control the drive assembly 32 to drive the transmission assembly 31 in the connected state to move.

[0104] The tilt angle of the floating structure 1 can be transmitted through the tilt sensor 63, and the tilt angle information is transmitted to the control module. When the tilt angle exceeds a predetermined value (the critical value for the overturning of the floating structure 1), the control module can use its control program to control the clutch to open, so that the power member 321 can control the rotation of the driving gear 322, and then control the movement of the connecting arm 51. As mentioned above, the float 52 located in the tilt direction is pressed down, and the float 52 away from the tilt direction is lifted.

[0105] The water level sensor 64 can detect the draft of the buoy 12 and the float 52, and adjust the draft of the buoy 12 and the float 52 according to the detected data to achieve the required draft.

[0106] In addition, a pressure sensor 62 can be provided between the hydraulic pipelines. The pressure sensor 62 is used to detect the pressure in the hydraulic circuit. When the pressure is at a certain standard value, it indicates that the hydraulic circuit is operating normally. When the detected pressure is greater than the standard value, it indicates that there is a blockage in the hydraulic pipeline. At this time, the clutch needs to be opened, and a locking force is applied to the driving gear 322 through the power piece 321, which can prevent the ring gear 312 from rotating, and then prevent the connecting arm 51 from moving, so as to stop the transportation of hydraulic oil in the hydraulic circuit and prevent the pipeline from rupture due to blockage.

[0107] When the detected pressure is lower than the standard value, it means that there is a risk of leakage in the hydraulic pipeline.

[0108] Temperature and humidity sensors 61 can be installed in the energy storage chamber 111, the energy conversion chamber 112, the upper chamber 1211, and the lower chamber 1212. An alarm module is also connected to the control module. The temperature and humidity sensors 61 can detect the temperature and humidity inside each chamber, allowing real-time monitoring of seawater infiltration or hydraulic oil leakage, as well as high temperatures. If water infiltration or hydraulic oil leakage is detected, causing the humidity inside the chamber to rise, the control module triggers the alarm module, notifying the relevant department for repairs.

[0109] To ensure that the temperature inside each cavity does not exceed the specified temperature, evenly distributed heat dissipation structures, such as heat dissipation fins, are provided on the outer walls of the buoy 12 and the column 11 to effectively transfer heat. In this application, a heat sink that can be turned on or off by power is preferred, such as a semiconductor cooling plate. In this way, when the temperature does not exceed the specified temperature, the heat sink does not need to be turned on. When the temperature exceeds the specified temperature, the heat sink can be connected to the power supply under the control of the control module to cool the cavity.

[0110] On the other hand, the present invention also provides a control system for the above-mentioned offshore floating experimental platform containing the wave energy conversion device, please refer to Figure 8The control system of the offshore floating experimental platform containing a wave energy conversion device includes a power control module 7, a motion control module 8, and a sensor module 6. Among them, the power control module 7 is signal-connected to the energy storage module and the transformer 90. The energy storage module is an energy storage battery 1111. The offshore floating experimental platform containing a wave energy conversion device can transmit the electric energy generated by the generator to the transformer 90, and the power control module 7 can control the electric energy in the transformer 90 to be integrated into the power grid. Alternatively, when the power control module 7 detects that there is not much power left in the energy storage battery 1111 (not enough to power the drive component 32), the power control module 7 can also control the electric energy in the transformer 90 to be partially transmitted to the energy storage battery 1111 to power the power component 321.

[0111] The motion control module 8 can be electrically connected to the drive assembly 32, specifically connected to the power piece 321 and the clutch on the power piece 321. The motion control module 8 can control the disconnection and connection of the clutch, and thereby control the disconnection and connection between the drive assembly 32 and the transmission assembly 31. When the motion control module 8 controls the clutch to engage, it can also control the power piece 321 to drive the driving gear 322 to rotate, so as to drive the ring gear 312 to rotate through the driven gear 311, thereby realizing the movement of the connecting arm 51.

[0112] The sensor module 6 includes a temperature and humidity sensor 61, a water level sensor 64, an inclination sensor 63, and a pressure sensor 62. The sensor module 6 can be connected to the power control module 7 and the motion control module 8 by signal, and the operation of the power control module 7 and the motion control module 8 is controlled by the detection results of each sensor.

[0113] Specifically, when the temperature and humidity sensor 61 detects that the cavity temperature of the float 12 is high, the sensor module 6 can send an instruction to the power control module 7, and the power control module 7 controls the radiator to turn on to dissipate heat inside the cavity.

[0114] The control system also includes an alarm module. When the temperature and humidity control module detects that the humidity is high, it can also send an instruction to the alarm module through the sensor module 6 to activate the alarm module.

[0115] The pressure sensor 62 always detects the pressure of the hydraulic oil in each hydraulic circuit. When the sensor module 6 recognizes that the pressure exceeds the standard, it can activate the alarm module on the one hand, and send an instruction to the power control module 7 to energize the power component 321 on the other hand, send an instruction to the motion control module 8 to engage the clutch, and control the power component 321 to start, so that the driving gear 322 no longer idles, and can fix the ring gear 312, and then fix the connecting arm 51, to ensure that the hydraulic oil in the hydraulic circuit no longer flows.

[0116] The water level sensor 64 can monitor the water level of the float 52 and the buoy 12 in real time, and can adjust the position of the floating structure 1 and the float 52 according to the water level.

[0117] The tilt sensor 63 can detect the tilt angle of the floating structure 1 and transmit the angle information to the sensor module 6. The sensor module 6 has a preset value range of the tilt of the floating structure 1 recorded in it. When the actual tilt degree is within the preset value range, the power control module 7 controls the energy storage battery 1111 to cut off the power to the power component 321, and the motion control module 8 controls the clutch to disconnect. At this time, the float 52 can rise and fall with the waves, and the wave conversion device at this time relies on wave energy to generate electricity.

[0118] When it is detected that the inclination angle of the floating structure 1 exceeds a preset value, the sensor module 6 sends instructions to the power control module 7 and the motion control module 8. The power control module 7 controls the energy storage battery 1111 to connect to the power member 321, and the motion control module 8 controls the clutch to engage and the power member 321 to start. The power member 321 controls the driving gear 322 to drive the driven gear 311 to rotate, thereby driving the ring gear 312 to rotate, and thus driving the connecting arm 51 to move, thereby adjusting the entire floating device to a state that is not easy to overturn (please refer to the method of driving the connecting arm 51 to move above for details, which will not be repeated here).

[0119] On the other hand, please refer to Figure 9 The present invention provides an offshore wind-wave combined power generation experimental platform, comprising a wind power generation device and the aforementioned offshore floating experimental platform containing a wave energy conversion device. The wind power generation device comprises a tower 100, a wind turbine motor 120 disposed on the tower 100, and a blade assembly 110 connected to the rotating end of the wind turbine motor. The wind turbine motor 120 is connected to a power generation component 93. The wind power generation device is fixedly connected to a column 11 via the tower 100, and the blade assembly 110 is disposed on the end of the tower 100 away from the column 11.

[0120] Based on the above-mentioned offshore power generation experimental platform, as an experimental platform, it needs to operate on water. Considering that most of the materials used in processing are wood, nylon and other materials and processing errors, its actual center of gravity and center of buoyancy may not be on the same vertical line and the height of the center of gravity is inconsistent with the actual one. In view of this situation, a counterweight groove can be set on the tower 100, and a counterweight block can be equipped in the counterweight groove. According to the position and weight of the counterweight block, the center of gravity can be corrected, that is, the center of gravity is set twice.

[0121] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0122] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An offshore floating experimental platform containing a wave energy conversion device, characterized in that: include: a floating structure capable of floating on the water surface, wherein the floating structure has a power generation component; a plurality of energy absorbing structures disposed around the floating structure, the energy absorbing structures comprising a connecting arm movably connected to the floating structure and a float disposed on the connecting arm, the float being capable of being placed in water and rising and falling with waves to drive the connecting arm to move, the connecting arm and the power generation component being connected via an energy transmission structure so that mechanical energy of the connecting arm is transmitted to the power generation component to generate electricity; and a driving structure, which includes a driving component and a transmission component, wherein part of the structure of the transmission component is connected to the connecting arm, and the transmission component and the driving component have a connected state and a disconnected state. When the sea condition is not suitable for power generation and the floating structure is at risk of tipping over, the driving structure is in the connected state, and the driving structure controls the float located in the tilt direction of the floating structure to sink, and controls the float located on the opposite side of the tilt direction of the floating structure to rise, so that the floating structure is subjected to a stronger buoyancy in the tilt direction and the gravity of the float on the opposite side of the tilt direction. The buoyancy and gravity form a torsional force opposite to the tilt direction to ensure the stability of the floating structure. When the sea condition is suitable for power generation, the driving structure is in the disconnected state, and the connecting arm rises and falls with the waves without being controlled by the driving component.

2. The offshore floating experimental platform containing a wave energy conversion device according to claim 1, characterized in that: It also includes an assembly structure installed on the floating structure, the transmission assembly and the connecting arm are coaxially rotatably connected to the assembly structure, one end of the transmission assembly is movably connected to the connecting arm, and the driving assembly can drive the transmission assembly to rotate, thereby driving the connecting arm to rotate coaxially.

3. The offshore floating experimental platform containing a wave energy conversion device according to claim 2, characterized in that: The drive assembly includes a power member arranged on the assembly structure, the output end of the power member is connected to the driving gear through a clutch, and the transmission assembly includes a driven gear and a ring gear rotatably connected to the assembly structure, the ring gear is an arc structure arranged around its rotating axis, and the driven gear is engaged with the driving gear and the ring gear at the same time.

4. The offshore floating experimental platform containing a wave energy conversion device according to claim 3, characterized in that: The transmission assembly also includes a connecting component, which includes an intermediate plate with one end connected to the ring gear, and the other end of the intermediate plate is coaxially rotatably connected to the assembly structure with the connecting arm. The connecting component also includes a connecting block rotatably connected to the ring gear, and part of the structure of the connecting arm is passed through the connecting block.

5. The offshore floating experimental platform containing a wave energy conversion device according to claim 4, characterized in that: The connecting component further comprises a lower plate with one end rotatably connected to the connecting block, and an end of the lower plate away from the connecting block is coaxially rotatably connected to the assembly structure with the connecting arm; The connecting component also includes an upper plate, one end of which is connected to the connection position between the middle plate and the gear ring, and the other end is connected to the connecting block. A reinforcement piece is also protruded from the gear ring along the extension direction of the gear ring.

6. The offshore floating experimental platform containing a wave energy conversion device according to claim 2, characterized in that: The connecting arm includes a rocker arm whose two ends are respectively rotatably connected to the assembly structure and the float, and a strip plate whose two ends are respectively rotatably connected to the assembly structure and the float, and the distance between the connection points of the rocker arm and the strip plate on the assembly structure is equal to the distance between the connection points of the rocker arm and the strip plate on the float.

7. The offshore floating experimental platform containing a wave energy conversion device according to any one of claims 1 to 6, characterized in that: The energy transmission structure is a hydraulic structure, including a hydraulic cylinder and a hydraulic rod. One end of the hydraulic cylinder is rotatably connected to a first connecting member, and the end of the first connecting member is fixedly connected to the connecting arm. One end of the hydraulic rod is rotatably connected to the floating structure through a second connecting member, and the other end is arranged in the hydraulic cylinder for telescopic movement. The oil inlet of the hydraulic cylinder is connected to the oil tank through an oil pipe, and the oil outlet of the hydraulic cylinder is connected to a hydraulic motor through an oil pipe. The hydraulic motor is connected to the power generation component, and the oil outlet of the hydraulic motor is connected to the oil inlet of the oil tank.

8. The offshore floating experimental platform containing a wave energy conversion device according to claim 7, characterized in that: The hydraulic rod can divide the interior of the hydraulic cylinder into two independent first oil chambers and second oil chambers. The first oil chamber and the second oil chamber are both provided with an oil port connected to an oil supply pipe. The oil ports on the first oil chamber and the second oil chamber are both connected to two oil pipelines. One of the oil pipelines is connected to the oil tank through a one-way valve so that the oil in the oil tank can flow into the first oil chamber and the second oil chamber. The other oil pipeline is connected to the hydraulic motor through a one-way valve so that the hydraulic oil in the first oil chamber and the second oil chamber can flow into the hydraulic motor.

9. The offshore floating experimental platform containing a wave energy conversion device according to claim 7, characterized in that: An assembly structure is provided on the floating structure, and the assembly structure includes an upper connecting seat and a lower connecting seat arranged at intervals on the floating structure. A box and a frame are provided on the upper connecting seat. The connecting arm and part of the structure of the transmission assembly are connected to the frame. The driving assembly is connected to the box. One end of the second connecting member is fixedly connected to the lower connecting seat, and the end of the hydraulic rod away from the hydraulic cylinder is rotatably connected to the second connecting member.

10. The offshore floating experimental platform containing a wave energy conversion device according to claim 9, characterized in that: The floating structure has rails arranged at intervals, each of the rails has concentric arc rails with different diameters, the upper connecting seat and the lower connecting seat are respectively connected to different rails, and a fixing plate is also connected between the upper connecting seat and the lower connecting seat, through which the upper connecting seat and the lower connecting seat can be fixed to the rails.

11. The offshore floating experimental platform containing a wave energy conversion device according to claim 1, characterized in that: The floating structure is also provided with an energy storage battery, which is connected to the power generation component through a transformer so that the electric energy generated by the power generation component can be transferred to the energy storage battery for storage. The energy storage battery is electrically connected to the power component in the drive assembly.

12. The offshore floating experimental platform containing a wave energy conversion device according to claim 1, characterized in that: The floating structure includes a column and a plurality of buoys arranged around the column. Two adjacent buoys are fixedly connected by a cross brace, and the buoy and the column are fixedly connected by a cross brace and a diagonal brace. The column includes an energy conversion chamber and an energy storage chamber. The energy conversion chamber is provided with a hydraulic motor, a gearbox and a power generation component. The energy storage chamber includes an energy storage battery and a transformer.

13. The offshore floating experimental platform containing a wave energy conversion device according to claim 12, characterized in that: There are three buoys, which are arranged at equal intervals around the column, and a plurality of energy absorbing structures are arranged between two adjacent buoys.

14. The offshore floating experimental platform containing a wave energy conversion device according to claim 12, characterized in that: The buoy includes a first end and a second end. One end of the first end is connected to one end of the second end. The circumferential dimension of the first end is smaller than the circumferential dimension of the second end.

15. The offshore floating experimental platform containing a wave energy conversion device according to claim 1, characterized in that: It also includes a control module, the control module signal is connected to an inclination sensor and a water level sensor, the inclination sensor is connected to the floating structure, and is used to detect the inclination angle of the floating structure, the water level sensor is connected to the float and the floating structure, and is used to monitor the draft of the float and the floating structure, the control module signal is connected to the drive assembly, and can control the drive assembly to drive the transmission assembly to move in the connected state.

16. A control system for an offshore floating experimental platform containing a wave energy conversion device according to any one of claims 1 to 15, characterized in that: include: A power control module, signal-connected to the energy storage module, the power control module being capable of controlling the energy storage module to supply power to the drive assembly; a motion control module, electrically connectable to the drive assembly, capable of controlling the connection and disconnection between the drive assembly and the transmission assembly, and capable of controlling the drive assembly to drive the transmission assembly in the connected state to move; and a sensor module, which includes a temperature and humidity sensor, a water level sensor, a tilt sensor, and a pressure sensor.

17. An offshore wind and wave combined power generation experimental platform, characterized in that: include: A wind power generation device and an offshore floating experimental platform containing a wave energy conversion device as described in any one of claims 1 to 14, wherein the wind power generation device includes a tower connected to the floating structure, a wind turbine motor arranged on the tower, and a blade assembly connected to the rotating end of the wind turbine motor, and the wind turbine motor is connected to the power generation component.

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