Self-adaptive posture adjusting and automatic wave avoiding method for wave absorbing floater of wave energy power generation device

Abstract

The invention discloses a self-adaptive posture adjusting and automatic wave avoiding method for a wave-absorbing floater of a wave energy power generation device, and relates to the technical field of ocean wave energy utilization, the device comprises a wave energy device main body structure and the wave-absorbing floater, and specifically, the wave energy device main body structure is provided with a floater upper connecting structure and a floater lower connecting structure; the wave-absorbing floater is movably connected with the floater upper connecting structure and the floater lower connecting structure through a hydraulic cylinder and a floater supporting arm, the inner space of the wave-absorbing floater is divided into a plurality of adjusting cabins in the water depth direction, and water is injected or drained into the adjusting cabins in sequence according to different sea conditions. The wave-absorbing floater is used for solving the problem that the reliability and the safe survivability of the wave-absorbing floater are insufficient.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean wave energy utilization, and in particular to a method for adaptively adjusting the mass and buoyancy of a wave energy absorbing float to achieve efficient conversion in low sea conditions and highly reliable survival in high sea conditions. Background Art

[0002] The ocean holds abundant wave energy, with vast reserves of exploitable energy. The development of ocean wave power generation equipment can provide clean, renewable energy for coastal cities, offshore islands and reefs, offshore facilities, and marine instruments. The rapid growth of offshore wind power in recent years has fully exploited ocean energy, combining wind and wave power to reduce costs and increase efficiency, creating new opportunities for the industrialization of wave power generation equipment.

[0003] Wave energy exhibits typical renewable energy characteristics, including volatility, intermittency, and randomness. Wave energy equipment has already achieved grid-connected power supply on offshore islands and reefs, and its technological pipeline is maturing, reaching the initial stages of industrialization. However, the complex marine environment, particularly in high sea conditions, poses significant challenges to the viability of wave energy generation equipment, particularly the structural safety of moving components such as wave-absorbing floats. Summary of the Invention

[0004] In view of the insufficient reliability and safe survivability of wave-absorbing floats in the prior art, the present invention provides a method for adaptively adjusting the mass and buoyancy of wave energy absorbing floats to achieve efficient conversion in low sea conditions and highly reliable survivability in high sea conditions.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides a wave energy power generation device comprising:

[0007] The main structure of the wave energy device is provided with a float upper connection structure and a float lower continuous structure;

[0008] The wave-absorbing float is movably connected to the upper connection structure of the float and the lower continuous structure of the float through a hydraulic cylinder and a float support arm, respectively. The internal space of the wave-absorbing float is divided into multiple regulating chambers along the water depth direction. The multiple regulating chambers are filled with water or drained in sequence according to different sea conditions.

[0009] As described above, the wave energy power generation device is further provided with a float water tank, a medium sea state regulating tank, a high sea state regulating tank and a submersible regulating tank in sequence along the water depth direction from deep to shallow, and the medium sea state regulating tank, the high sea state regulating tank and the submersible regulating tank are respectively provided with a medium sea state regulating tank water inlet valve, a high sea state regulating tank water inlet valve and a submersible regulating tank water inlet valve.

[0010] The wave energy power generation device as described above, further, a control unit is provided on the connecting structure of the float, a control valve group is provided on the wave-absorbing float, and the control unit is connected to the control valve group through a control pipeline on the main structure side, a transition hose and a control pipeline on the float side in sequence.

[0011] The wave energy power generation device as described above, further, one end of the hydraulic cylinder is connected to the wave-absorbing float through a lower connection point of the hydraulic cylinder, the other end of the hydraulic cylinder is connected to the connecting structure of the float through an upper connection point of the hydraulic cylinder, and both the lower connection point of the hydraulic cylinder and the upper connection point of the hydraulic cylinder are rotatably connected.

[0012] The wave energy power generation device as described above, further, the float support arm is connected to the continuous structure under the float through a connection point of the float support arm, and the connection point of the float support arm is rotatably connected.

[0013] The wave energy power generation device as described above, further, the main structure of the wave energy device is further provided with a front support structure for the float. When the wave-absorbing float dives to the lowest point, the front support structure for the float is used to support the wave-absorbing float.

[0014] In a second aspect, the present invention provides a method for adaptive adjustment and automatic wave avoidance of a wave-absorbing float, which is used for any one of the wave energy power generation devices described above, including: Adaptive adjustment from low sea conditions to extreme sea conditions:

[0015] In low sea conditions, the attitude is adjusted to the working hydrostatic floating state, and only the float water tank of the wave-absorbing float is filled with water;

[0016] When the low sea conditions change to medium sea conditions, water is injected into the adjustment tank for medium sea conditions, so that the attitude of the wave-absorbing float dives to a certain depth;

[0017] When the medium sea conditions change to high sea conditions, water is injected into the adjustment tank for high sea conditions, so that the attitude of the wave-absorbing float continues to dive to a certain depth;

[0018] When the high sea conditions change to extreme sea conditions, water is injected into the diving adjustment tank, and the wave-absorbing float is completely submerged under the water surface and enters the diving wave-avoiding floating state.

[0019] The method for adaptive adjustment and automatic wave avoidance of the wave-absorbing float as described above, further, further includes: Adaptive adjustment from extreme sea conditions to low sea conditions:

[0020] When the extreme sea conditions change to high sea conditions, the diving adjustment tank is drained, so that the wave-absorbing float emerges above the water surface;

[0021] When the high sea conditions change to medium sea conditions, the adjustment tank for high sea conditions is drained, so that the wave-absorbing float continues to float upward;

[0022] When the medium sea conditions change to low sea conditions, the adjustment tank for medium sea conditions is drained, so that the wave-absorbing float continues to float upward to the highest floating state.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: In order to improve the reliability and safe survival ability of the wave-absorbing float, the present invention invented an adaptive attitude adjustment method for the wave energy-absorbing float. By automatically identifying the sea conditions, the wave energy-absorbing float efficiently captures wave energy under low sea conditions, the wave energy-absorbing float reduces its efficiency under medium sea conditions, and under high sea conditions, the quality and buoyancy of the wave-absorbing floating body are adaptively adjusted through control measures to form an overtopping effect, reducing the conversion efficiency and the amplitude of movement, in exchange for a high reliable survival ability, breaking through the key technology of safe survival under high sea conditions, and leading the wave energy power generation device to operate efficiently and highly reliably in all sea conditions. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Schematic diagram of the wave energy-absorbing float structure of the wave energy power generation device that cannot be regulated in some cases;

[0026] Figure 2 Schematic diagram of the structure of the adaptive regulation system of the wave energy-absorbing float of the wave energy power generation device in the embodiment of the present invention;

[0027] Figure 3 Normal working still water floating state of the wave energy-absorbing float in the embodiment of the present invention;

[0028] Figure 4 Reduced efficiency working still water floating state of the wave energy-absorbing float in the medium sea conditions in the embodiment of the present invention

[0029] Figure 5 Reduced efficiency working still water floating state of the wave energy-absorbing float in the high sea conditions in the embodiment of the present invention;

[0030] Figure 6 Submerged and wave-avoiding still water floating state of the wave energy-absorbing float in the extreme sea conditions in the embodiment of the present invention.

[0031] In the accompanying drawings: 1. Main structure of the wave energy device; 2. Front support structure of the float; 3. Continuous structure under the float; 4. Upper connection structure of the float; 5. Wave-absorbing float; 6. Hydraulic cylinder; 7. Water line; 8. Float support arm; 9. Lower connection point of the hydraulic cylinder; 10. Upper connection point of the hydraulic cylinder; 11. Connection point of the float support arm; 12. Float water tank; 13. Float air tank; 14. Medium sea condition adjustment tank; 15. High sea condition adjustment tank; 16. Diving adjustment tank; 17. Control valve group; 18. Control pipeline on the side of the float; 19. Transition hose; 20. Control pipeline on the side of the main structure; 21. Control unit; 22. Water inlet valve of the medium sea condition adjustment tank; 23. Water inlet valve of the high sea condition adjustment tank; 24. Water inlet valve of the diving adjustment tank. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0033] Embodiment:

[0034] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above accompanying drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" in the embodiments of the present invention and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The wave-absorbing float 5 of the traditional wave energy power generation device only has a float water tank 12 and a float air tank 13. Among them, the float air tank 13 provides buoyancy, and the float water tank 12 removes the excess buoyancy of the float, so that the float is in the most efficient capture posture. The float air tank 13 is not adjustable, so the posture of the wave-absorbing float 5 remains unchanged. Since this posture is always in the efficient capture posture, in high sea conditions, especially extreme sea conditions, the float will move greatly, seriously threatening the safety of the wave energy main structure, the wave-absorbing float 5, the energy conversion system such as the hydraulic cylinder 6, etc.

[0037] See Figures 1 to 2 , this embodiment provides a wave energy power generation device, which includes: a wave energy device main structure 1 and a wave-absorbing float 5. Specifically, the wave energy device main structure 1 is provided with a float upper connection structure 4 and a float lower continuous structure 3; the wave-absorbing float 5 is respectively movably connected to the float upper connection structure 4 and the float lower continuous structure 3 through a hydraulic cylinder 6 and a float support arm 8. The internal space of the wave-absorbing float 5 is divided into multiple adjustment cabins along the water depth direction. Among them, according to different sea conditions, water is injected or drained into the multiple adjustment cabins in sequence.

[0038] It can be seen that through the wave energy power generation device provided by this embodiment, by automatically identifying the sea conditions, the wave-absorbing float 5 efficiently captures wave energy in low sea conditions, the wave-absorbing float 5 works with reduced efficiency in medium sea conditions, and in high sea conditions, the quality and buoyancy of the wave-absorbing float body are adaptively adjusted through control measures to form an overtopping effect, reducing the conversion efficiency and the movement amplitude, in exchange for high reliable survivability, breaking through the key technology of safe survival in high sea conditions, and leading the wave energy power generation device to operate efficiently and highly reliably in all sea conditions.

[0039] In addition, through the wave energy power generation device provided by this embodiment, the wave-absorbing float 5 is retained to efficiently convert in low sea conditions, the capture efficiency gradually decreases in medium and high sea conditions, and it completely sinks into the water (below the water line 7) and cuts out work in extreme sea conditions, realizing the organic integration of efficient capture and high reliable survival of the wave energy power generation device.

[0040] In one embodiment, the wave-absorbing float 5 is successively provided with a float water tank 12, a medium sea condition adjustment cabin 14, a high sea condition adjustment cabin 15, and a diving adjustment cabin 16 from deep to shallow along the water depth direction. The medium sea condition adjustment cabin 14, the high sea condition adjustment cabin 15, and the diving adjustment cabin 16 are respectively provided with a medium sea condition adjustment cabin water inlet valve 22, a high sea condition adjustment cabin water inlet valve 23, and a diving adjustment cabin 24 water inlet valve.

[0041] In one embodiment, the float upper connection structure 4 is provided with a control unit 21, the wave-absorbing float 5 is provided with a control valve group 17, and the control unit 21 is successively connected to the control valve group 17 through a main structure side control pipeline 20, a transition hose 19, and a float side control pipeline 18.

[0042] The wave energy power generation device provided in this embodiment consists of a medium sea condition adjustment cabin 14, a high sea condition adjustment cabin 15, a diving adjustment cabin 16, a control valve group 17, a float side control pipeline 18, a transition hose 19, a main structure side control pipeline 20, a control unit 21, and inlet valves of each adjustment cabin. That is, the original float air cabin 13 is subdivided into a medium sea condition adjustment cabin 14, a high sea condition adjustment cabin 15, and a diving adjustment cabin 16, and an automatic ballast control unit 21 and pipelines are configured to realize automatic adjustment of the posture of the wave-absorbing float and free switching between postures.

[0043] The basic principles of the adaptive posture adjustment and automatic wave avoidance of the wave-absorbing float of the wave energy power generation device are as follows:

[0044] The control unit 21 detects the change of the sea condition wave height in real time, automatically qualitatively identifies the sea condition, and the whole sea condition can be divided into four levels of sea conditions: low sea condition, medium sea condition, high sea condition, and extreme sea condition. When it is identified that the current sea condition level changes, the control unit starts the ballast control system, and injects water or drains water into the corresponding adjustment cabin through the main structure side control pipeline 20, the transition hose 19, the float side control pipeline 18, and the control valve group 17 to realize the switching of the posture of the wave-absorbing float 5.

[0045] In an embodiment, one end of the hydraulic cylinder is connected to the wave-absorbing float 5 through a lower connection point 9 of the hydraulic cylinder, and the other end of the hydraulic cylinder is connected to the upper connection structure 4 of the float through an upper connection point 10 of the hydraulic cylinder. Both the lower connection point 9 of the hydraulic cylinder and the upper connection point 10 of the hydraulic cylinder are rotatably connected.

[0046] In an embodiment, the float support arm 8 is connected to the lower continuous structure 3 of the float through a connection point 11 of the float support arm, and the connection point 11 of the float support arm is rotatably connected.

[0047] In an embodiment, the main structure 1 of the wave energy device is further provided with a front float support structure 2, and when the wave-absorbing float 5 dives to the lowest point, the front float support structure 2 is used to support the wave-absorbing float 5.

[0048] See Figures 3 - 6 , this embodiment provides a method for adaptive adjustment and automatic wave avoidance of a wave-absorbing float, wherein,

[0049] It includes: adaptive adjustment from low sea condition to extreme sea condition: in low sea condition, the posture is adjusted to the working still water floating state, and only the float water tank 12 of the wave-absorbing float 5 is filled with water; when the low sea condition changes to the medium sea condition, water is injected into the medium sea condition adjustment cabin 14 to make the wave-absorbing float 5 dive to a certain depth; when the medium sea condition changes to the high sea condition, water is injected into the high sea condition adjustment cabin 15 to make the wave-absorbing float 5 continue to dive to a certain depth; when the high sea condition changes to the extreme sea condition, water is injected into the diving adjustment cabin 16, and the wave-absorbing float 5 is completely submerged under the water surface and enters the diving wave-avoiding floating state.

[0050] Specifically, the first step: The wave energy power generation device generally conducts the deployment operation under low sea conditions, and the attitude is adjusted to the normal working hydrostatic floating state under low sea conditions. Only when the float water tank 12 of the wave-absorbing float 5 is filled with water can it efficiently capture wave energy, as Figure 3 shown.

[0051] The second step: When the control unit 21 receives that the sea conditions change, that is, from low sea conditions to medium sea conditions, the control unit automatically activates the ballast control system. Through the main structure side control pipeline 20, the transition hose 19, the float side control pipeline 18, and the control valve group 17, the medium sea condition adjustment tank 14 is filled with water, so that the wave-absorbing float 5 dives to a certain depth in attitude, as Figure 4 shown. Although the movement amplitude and capture efficiency of the wave-absorbing float 5 are reduced, since the incoming wave energy flux density increases, the output power of the wave energy power generation device still increases.

[0052] The third step: When the control unit 21 receives that the sea conditions continue to intensify, that is, from medium sea conditions to high sea conditions, the control unit automatically activates the ballast control system. Through the main structure side control pipeline 20, the transition hose 19, the float side control pipeline 18, and the control valve group 17, the high sea condition adjustment tank 15 is filled with water, so that the wave-absorbing float 5 continues to dive to a certain depth in attitude, as Figure 5 shown. Since the incoming wave energy flux density continues to increase, the output power of the wave energy power generation device continues to increase and may reach the maximum output power.

[0053] The fourth step: When the control unit 21 receives that the sea conditions continue to intensify, that is, from high sea conditions to extreme sea conditions, beyond the working sea conditions of the floating wave float, the control unit automatically activates the ballast control system. Through the main structure side control pipeline 20, the transition hose 19, the float side control pipeline 18, and the control valve group 17, the diving adjustment tank 16 is filled with water, so that the wave-absorbing float 5 is completely submerged under the water surface to a certain depth and enters the diving wave-avoiding floating state, as Figure 6 shown. At this time, the wave-absorbing float 5 no longer captures wave energy, and the wave energy power generation device will also suspend the output power and completely enter the safe self-protection working mode.

[0054] It also includes: Adaptive adjustment from extreme sea conditions to low sea conditions: When extreme sea conditions change to high sea conditions, the diving adjustment tank 16 is drained to make the wave-absorbing float 5 emerge from the water surface; when high sea conditions change to medium sea conditions, the high sea condition adjustment tank 15 is drained to make the wave-absorbing float 5 continue to float; when medium sea conditions change to low sea conditions, the medium sea condition adjustment tank 14 is drained to make the wave-absorbing float 5 continue to float to the highest floating state.

[0055] Specifically, the fifth step: when the control unit 21 receives that the sea state improves, that is, when the extreme sea state changes to the high sea state, the control unit automatically activates the ballast control system. Through the main structure side control pipeline 20, the transition hose 19, the float side control pipeline 18 and the control valve group 17, the diving adjustment tank 16 is drained of water, so that the wave-absorbing float 5 floats out of the water surface and resumes the power generation mode, returning to the floating state as shown in Figure 5 . At this time, the wave energy power generation device will output a high power.

[0056] The sixth step: when the control unit 21 receives that the sea state continues to improve, that is, when the high sea state changes to the medium sea state, the control unit automatically activates the ballast control system. Through the main structure side control pipeline 20, the transition hose 19, the float side control pipeline 18 and the control valve group 17, the high sea state adjustment tank 15 is drained of water, so that the wave-absorbing float 5 continues to float upward, reducing the overtopping effect and improving the capture efficiency, returning to the floating state as shown in Figure 4 .

[0057] The seventh step: when the control unit 21 receives that the sea state continues to improve, that is, when the medium sea state changes to the low sea state, the control unit automatically activates the ballast control system. Through the main structure side control pipeline 20, the transition hose 19, the float side control pipeline 18 and the control valve group 17, the medium sea state adjustment tank 14 is drained of water, so that the wave-absorbing float 5 continues to float upward to the highest floating state, efficiently capturing wave energy, returning to the floating state as shown in Figure 3 .

[0058] Of course, when the sea state does not change completely, the wave-absorbing float 5 can also be switched freely. For example, when directly returning from the high sea state to the low sea state, it can directly enter the seventh step after the second step. It should be noted that each time the adjustment tank is filled with water and drained, a certain time needs to be reserved to ensure that the water in the adjustment tank is full or completely emptied, avoiding the risks brought to parts such as the float support arm 8, the lower connection point 9 of the hydraulic cylinder, the upper connection point 10 of the hydraulic cylinder, and the connection point 11 of the float support arm caused by the free hydraulic vibration of the half-tank water and the sloshing of the water mass. This is also the reason for only making limited sub-compartments for the float air chamber 13. In addition, the limited sub-compartments only start the floating state switching when the sea state changes significantly, which can reduce the action frequency of the adaptive control system of the wave-absorbing float 5 of the wave energy power generation device, reduce the power consumption of the system, and lower the requirement for the recognition accuracy of the incoming sea state.

[0059] It can be seen that through the wave-absorbing float adaptive adjustment and automatic wave avoidance method provided by this embodiment, by automatically identifying the sea state, the wave-absorbing float 5 efficiently captures wave energy in the low sea state, the wave-absorbing float 5 works with reduced efficiency in the medium sea state, and in the high sea state, the quality and buoyancy of the wave-absorbing float body are adaptively adjusted through control measures to form an overtopping effect, reducing the conversion efficiency and the movement amplitude, in exchange for high reliable survivability, breaking through the key technology of safe survival in high sea states, and leading the wave energy power generation device to operate efficiently and highly reliably in all sea states.

[0060] It should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0061] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0062] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0063] The above embodiments are only for illustrating the technical concept and characteristics of the present invention, and the purpose is to enable those of ordinary skill in the art to understand the content of the present invention and implement it accordingly. It cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the essence of the content of the present invention should be covered within the protection scope of the present invention.

Claims

1. A wave energy power generation device, characterized in that: Comprising: The main structure of the wave energy device, which is provided with a connection structure above the float and a continuous structure below the float; The wave-absorbing float is respectively movably connected to the connection structure above the float and the continuous structure below the float through a hydraulic cylinder and a float support arm. The internal space of the wave-absorbing float is divided into multiple adjustment compartments along the water depth direction. Among them, according to different sea conditions, water is injected or drained into the multiple adjustment compartments in sequence.

2. The wave energy power generation device according to claim 1, wherein, The wave-absorbing float is successively provided with a float water compartment, a medium sea condition adjustment compartment, a high sea condition adjustment compartment, and a diving adjustment compartment from deep to shallow along the water depth direction. The medium sea condition adjustment compartment, the high sea condition adjustment compartment, and the diving adjustment compartment are respectively provided with a medium sea condition adjustment compartment water inlet valve, a high sea condition adjustment compartment water inlet valve, and a diving adjustment compartment water inlet valve.

3. The wave energy power generation device according to claim 1, characterized in that The connection structure above the float is provided with a control unit, and the wave-absorbing float is provided with a control valve group. The control unit is connected to the control valve group through a main structure side control pipeline, a transition hose, and a float side control pipeline in sequence.

4. The wave energy power generation device according to claim 1, characterized in that One end of the hydraulic cylinder is connected to the wave-absorbing float through a lower connection point of the hydraulic cylinder, and the other end of the hydraulic cylinder is connected to the connection structure above the float through an upper connection point of the hydraulic cylinder. Both the lower connection point of the hydraulic cylinder and the upper connection point of the hydraulic cylinder are rotatably connected.

5. The wave energy power generation device according to claim 1, wherein The float support arm is connected to the continuous structure below the float through a connection point of the float support arm, and the connection point of the float support arm is rotatably connected.

6. The wave energy power generation device according to claim 1, characterized in that The main structure of the wave energy device is further provided with a front support structure for the float. When the wave-absorbing float dives to the lowest point, the front support structure for the float is used to support the wave-absorbing float.

7. A method for adaptive adjustment and automatic wave avoidance of an electromagnetic wave absorbing float, characterized in that, For the wave energy power generation device according to any one of claims 1 to 6, comprising: Adaptive adjustment from low sea conditions to extreme sea conditions: In low sea conditions, the attitude is adjusted to the working still water floating state, and only the float water compartment of the wave-absorbing float is filled with water; When the low sea conditions change to medium sea conditions, water is injected into the medium sea condition adjustment compartment to make the wave-absorbing float dive to a certain depth; When the medium sea conditions change to high sea conditions, water is injected into the high sea condition adjustment compartment to make the wave-absorbing float continue to dive to a certain depth; When the high sea conditions change to extreme sea conditions, water is injected into the diving adjustment compartment, and the wave-absorbing float is completely submerged under the water surface and enters the diving wave-avoiding floating state.

8. The wave-absorbing float adaptive adjustment and automatic wave avoidance method according to claim 7, characterized in that, Further comprising: Adaptive adjustment from extreme sea conditions to low sea conditions: When the extreme sea conditions change to high sea conditions, the diving adjustment compartment is drained to make the wave-absorbing float emerge from the water surface; When the high sea conditions change to medium sea conditions, the high sea condition adjustment compartment is drained to make the wave-absorbing float continue to float; When the medium sea conditions change to low sea conditions, the medium sea condition adjustment compartment is drained to make the wave-absorbing float continue to float to the highest floating state.

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