A wave energy power generation buoy with variable diameter and method

Abstract

The present invention relates to the technical field of wave energy power generation buoys, and more specifically to a variable-diameter wave energy power generation buoy and method. The variable-diameter wave energy power generation buoy includes a main barrel cover and a waterproof rubber ring. The bottom of the main barrel cover is provided with an annular chassis, and the waterproof rubber ring encloses the chassis. An installation cavity is provided between the main barrel cover and the chassis. The installation cavity is provided with an expansion mechanism for controlling the expansion and contraction of the waterproof rubber ring and a sensor for collecting wave period data. The present invention replaces the traditional power drive system with an innovatively designed adaptive geometric adjustment mechanism, and dynamically optimizes the buoy diameter parameters in combination with real-time wave monitoring data, thereby forming a wave energy power generation solution that combines the advantages of energy conversion efficiency with practical engineering value.

Description

Technical Field

[0001] The present invention relates to the technical field of wave energy power generation buoys, and in particular to a wave energy power generation buoy with a variable diameter and a method thereof. Background Art

[0002] As a widely distributed, renewable, clean energy source, the efficient development and utilization of wave energy is crucial for the transformation of energy structures. Oscillating buoy wave energy power generation devices, due to their simple structure and strong adaptability, have become a mainstream technology.

[0003] However, the buoy's energy capture efficiency depends on how closely its natural frequency matches the wave frequency (a resonance effect). Traditional buoys have a fixed diameter, and when the wave period deviates from the designed value (such as during storms or seasonal changes), energy capture efficiency drops significantly. Experiments have shown that for a fixed-diameter buoy, efficiency drops by 40%-60% when the wave period varies by ±20%. This suggests that traditional fixed-diameter buoys are limited by the conflict between "static design" and "dynamic sea conditions," unable to adjust their diameter according to sea conditions, resulting in reduced energy capture efficiency.

[0004] To address this issue, Chinese invention patent application publication number CN108087188A proposes a point-floating wave energy power generation device with a variable buoy area; Chinese invention patent application publication number CN119641536 discloses a floating wave energy power generation device with a variable energy capture structure and a controllable energy conversion system; and Chinese invention patent application publication number CN103939271A discloses a combined oscillating buoy wave energy power generation device. While these methods overcome the physical limitations of traditional fixed buoys by introducing complex mechanical structures, they still have significant drawbacks: on the one hand, they cannot maximize energy capture efficiency; on the other hand, their complex transmission mechanisms lead to delayed dynamic response of the system and increase maintenance costs. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a wave energy power generation buoy with a variable diameter and a method.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a variable diameter wave energy power generation buoy, including a main tube cover and a waterproof rubber ring, the bottom of the main tube cover is provided with an annular chassis, the waterproof rubber ring wraps the chassis inside, and an installation cavity is provided inside the main tube cover and the chassis, and an expansion mechanism for controlling the expansion and contraction of the waterproof rubber ring and a sensor for collecting wave period data are provided in the installation cavity.

[0007] Preferably, the expansion mechanism includes a plurality of sliders, which are distributed circumferentially on the chassis, and the side walls of the chassis are provided with a plurality of mounting holes corresponding to the sliders. A conical lifting platform is provided in the middle of the chassis so as to be liftable, and the side walls of the conical lifting platform are in contact with the plurality of sliders respectively.

[0008] Preferably, the conical lifting platform is fixed to the bottom of a retractable fork-type retracting frame, the top of the fork-type retracting frame is installed on a mounting seat, the mounting seat is provided with a transmission mechanism for controlling the operation of the fork-type retracting frame, the mounting seat is installed on a closed disc, and the closed disc is installed in the main cylinder cover.

[0009] Preferably, the transmission mechanism is a crank slider mechanism, and a driving mechanism for driving the crank slider mechanism is installed on the closed disc.

[0010] Preferably, the driving mechanism is a worm gear mechanism controlled by a motor, and the motor is installed on the top of the closed disc.

[0011] Preferably, the upper and lower end surfaces of the sliding block are respectively provided with concave grooves, and the upper and lower inner top surfaces of the mounting hole are provided with convex blocks corresponding to the concave grooves.

[0012] Preferably, the waterproof rubber ring is connected and fixed to the upper part of the chassis by screws.

[0013] The present invention also provides a method for controlling a variable-diameter wave energy power generation buoy, which uses the variable-diameter wave energy power generation buoy, comprising the following steps:

[0014] (1) Automatically adjust sensors through artificial intelligence to collect wave period data at a frequency that best suits sea conditions;

[0015] (2) Monitor the current wave period T(i) through sensors;

[0016] (3) The artificial intelligence loads the currently measured wave period into the sea condition safety assessment system for evaluation, and determines whether T(i) is within the safe period interval for equipment operation. If T(i) is not within the safe interval, the equipment is immediately suspended; if T(i) is within the safe interval, the next step is carried out;

[0017] (4) According to the wave period T(i) measured by the sensor, the algorithm dynamically matches the optimal buoy diameter D i ;

[0018] (5) If the optimal buoy diameter D i If it is equal to the current buoy diameter D, then keep the current buoy diameter; otherwise adjust to the matching buoy diameter D i ;

[0019] (6) Record the effect of each adjustment and optimize subsequent decisions through data feedback;

[0020] (7) The artificial intelligence measures the wave period at a certain interval according to the frequency selected by itself and repeats steps (2) to (5).

[0021] Compared with the existing technology, the present invention has the following beneficial effects: the present invention replaces the traditional power drive system with an innovatively designed adaptive geometric adjustment mechanism, and dynamically optimizes the buoy diameter parameters in combination with real-time wave monitoring data, thereby simplifying the system structure while achieving three technological breakthroughs: efficient wave energy capture based on fluid mechanics characteristics, a real-time dynamic response mechanism based on intelligent sensing, and a low-maintenance cost operation and maintenance system achieved through modular design, ultimately forming a wave energy power generation solution that combines the advantages of energy conversion efficiency and engineering practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of an embodiment of the present invention.

[0023] Figure 2 Schematic diagram of the internal structure of an embodiment of the present invention.

[0024] Figure 3 Schematic diagram of the transmission structure of the fork-shaped telescopic frame and the worm gear mechanism according to an embodiment of the present invention.

[0025] Figure 4 FIG. 4 is a top view of the slider according to an embodiment of the present invention.

[0026] Figure 5 Schematic diagram of the flow of the buoy control method according to an embodiment of the present invention.

[0027] Figure 6 Schematic diagram of the relationship between wavelength and wave period according to an embodiment of the present invention.

[0028] Markings in the figure: 1. Main cylinder cover; 2. Screw; 3. Waterproof rubber ring; 4. Sealing disc; 5. Crank slider mechanism; 6. Fork-type retracting frame; 7. Conical lifting platform; 8. Slider; 9. Worm gear mechanism; 10. Chassis. DETAILED DESCRIPTION

[0029] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description.

[0030] like Figures 1 to 4As shown, in order to solve the above technical problems, the technical solution adopted by the present invention is: a variable diameter wave energy power generation buoy, including a main barrel cover 1 and a waterproof rubber ring 3, the bottom of the main barrel cover 1 is provided with an annular chassis 10, the waterproof rubber ring 3 wraps the chassis 10 inside, and an installation cavity is provided between the main barrel cover 1 and the chassis 10, and an expansion mechanism for controlling the expansion and contraction of the waterproof rubber ring and a sensor for collecting wave period data are provided in the installation cavity.

[0031] In this embodiment, the expansion mechanism includes a plurality of sliders 8, which are distributed circumferentially on a chassis 10. The side walls of the chassis 10 are provided with a plurality of mounting holes corresponding to the sliders 8. A conical lifting platform 7 is provided in the middle of the chassis 10 so as to be liftable, and the side walls of the conical lifting platform 7 are in contact with the plurality of sliders 8 respectively.

[0032] In this embodiment, the conical lifting platform 7 is fixed to the bottom of a retractable fork-shaped retracting frame 6, the top of the fork-shaped retracting frame 6 is installed on a mounting seat, and the mounting seat is provided with a transmission mechanism for controlling the operation of the fork-shaped retracting frame. The mounting seat is installed on a closed disc 4, and the closed disc 4 is installed in the main cylinder cover 1.

[0033] In this embodiment, the transmission mechanism is a crank slider mechanism 5 , and a driving mechanism for driving the crank slider mechanism 5 is installed on the closed disc 4 .

[0034] In this embodiment, the driving mechanism is a worm gear mechanism 9 controlled by a motor, and the motor is installed on the top of the closed disc 4. The self-locking property of the worm gear mechanism 9 enables stable operation of the entire device.

[0035] In this embodiment, the upper and lower end surfaces of the slider 8 are respectively provided with concave grooves, and the upper and lower inner top surfaces of the mounting hole are provided with convex blocks corresponding to the concave grooves. Through the cooperation of the two, the slider 8 can slide in a predetermined direction.

[0036] In this embodiment, the waterproof rubber ring 3 is connected and fixed to the upper part of the chassis 10 by screws.

[0037] Working principle: The worm gear mechanism 9 is controlled by the motor to work, and the worm gear mechanism 9 drives the crank slider mechanism 5 to work. The crank slider mechanism 5 controls the lifting and lowering of the fork-type retraction frame 6, and the fork-type retraction frame 6 drives the conical lifting platform 7 to lift and lower. When the conical lifting platform 7 descends, the side of the conical lifting platform 7 contacts multiple sliders 8 and pushes the multiple sliders 8 to move outward respectively. The sliders 8 then expand the waterproof rubber ring 3 outward, thereby expanding the diameter of the waterproof rubber ring 3. When the conical lifting platform 7 rises, the waterproof rubber ring 3 automatically shrinks and pushes the sliders 8 to reset.

[0038] like Figure 5 As shown, the present invention also provides a method for controlling a variable diameter wave energy power generation buoy, which uses the variable diameter wave energy power generation buoy, comprising the following steps:

[0039] (1) Automatically adjust sensors through artificial intelligence (AI) to collect wave period data at a frequency that best suits sea conditions;

[0040] (2) Monitor the current wave period T(i) through sensors;

[0041] (3) Artificial intelligence (AI) loads the currently measured wave period into the sea condition safety assessment system for evaluation, and determines whether T(i) is within the safe period interval for equipment operation. If T(i) is not within the safe interval, the equipment is immediately suspended; if T(i) is within the safe interval, the next step is carried out;

[0042] (4) According to the wave period T(i) measured by the sensor, the algorithm dynamically matches the optimal buoy diameter D i ;

[0043] (5) If the optimal buoy diameter D i If it is equal to the current buoy diameter D, then keep the current buoy diameter; otherwise adjust to the matching buoy diameter D i ;

[0044] (6) Record the effect of each adjustment and optimize subsequent decisions through data feedback;

[0045] (7) Artificial Intelligence (AI) measures the wave period at intervals according to a frequency selected by itself and repeats steps (2) to (5).

[0046] A wavelength-diameter mapping relationship database is constructed according to formula (1). When the sensor detects the real-time wave wavelength, it relies on the AI ​​algorithm to dynamically match the optimal buoy diameter and synchronously adjust the device's natural frequency to match the device's hydrodynamic parameters with the wave excitation frequency in real time, achieving efficient energy conversion, low-cost operation and maintenance, and millisecond-level dynamic response. At the same time, the integrated sea condition safety assessment system evaluates the wave parameters and safety thresholds in real time, and immediately triggers the protection mechanism if they exceed the preset range.

[0047] C wr =λ / 2πD=n (1)

[0048] Among them, C wr is the relative capture width, D is the diameter of the buoy, λ is the wavelength, and n is a constant that can be determined based on the economic efficiency of the device.

[0049] like Figure 6As shown in Figure 1, the core principle of the present invention is to achieve an optimal match between the natural frequency of the buoy and the wave frequency by adjusting the diameter of the buoy. Formula (1) shows the relative capture width C of the buoy. wr The calculation formula is as follows: the wavelength λ is closely related to the buoy diameter D, and the wavelength λ is closely related to the wave period T.

[0050] Therefore, by acquiring wave period data in real time through sensors, the corresponding relationship between wave parameters and buoy diameter can be directly established.

[0051] Among them, the relationship between λ and wave period T is shown in Table 1 below:

[0052] Table 1

[0053]

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equalization change and modification made to the above embodiment by any technician familiar with the field without departing from the content of the technical solution of the present invention based on the technical essence of the present invention shall fall within the scope of the present invention.

Claims

1. A wave energy power generation buoy with a variable diameter, characterized by: It includes a main cylinder cover and a waterproof rubber ring. The bottom of the main cylinder cover is provided with an annular chassis, and the waterproof rubber ring wraps the chassis. An installation cavity is provided between the main cylinder cover and the chassis. The installation cavity is provided with an expansion mechanism for controlling the expansion and contraction of the waterproof rubber ring and a sensor for collecting wave period data. The expansion mechanism includes a plurality of sliders, which are distributed circumferentially on the chassis. The side walls of the chassis are provided with a plurality of mounting holes corresponding to the sliders. A conical lifting platform is provided in the middle of the chassis so as to be liftable. The side walls of the conical lifting platform are in contact with the plurality of sliders respectively.

2. The variable diameter wave energy power generation buoy according to claim 1, characterized in that: The conical lifting platform is fixed to the bottom of a retractable fork-shaped retracting frame, the top of the fork-shaped retracting frame is installed on a mounting seat, and the mounting seat is provided with a transmission mechanism for controlling the operation of the fork-shaped retracting frame. The mounting seat is installed on a closed disc, and the closed disc is installed in the main cylinder cover.

3. The variable diameter wave energy power generation buoy according to claim 2, characterized in that: The transmission mechanism is a crank slider mechanism, and a driving mechanism for driving the crank slider mechanism is installed on the closed disc.

4. The variable diameter wave energy power generation buoy according to claim 3, characterized in that: The driving mechanism is a worm gear mechanism controlled by a motor, and the motor is installed on the top of the closed disc.

5. The variable diameter wave energy power generation buoy according to claim 1, characterized in that: The upper and lower end surfaces of the sliding block are respectively provided with concave grooves, and the upper and lower inner top surfaces of the mounting hole are provided with convex blocks corresponding to the concave grooves.

6. The variable diameter wave energy power generation buoy according to claim 1, characterized in that: The waterproof rubber ring is connected and fixed to the upper part of the chassis by using screws.

7. A method for controlling a variable diameter wave energy power generation buoy, using the variable diameter wave energy power generation buoy according to claim 1, characterized in that: The following steps are involved: (1) Automatically adjust sensors through artificial intelligence to collect wave period data at a frequency that best suits sea conditions; (2) Monitor the current wave period T(i) through sensors; (3) Artificial intelligence loads the currently measured wave period into the sea condition safety assessment system for evaluation, and determines whether T(i) is within the safe period interval for equipment operation. If T(i) is not within the safe interval, the equipment is immediately suspended; If T(i) is in the safe range, proceed to the next step; (4) According to the wave period T(i) measured by the sensor, the algorithm dynamically matches the optimal buoy diameter D i ; (5) If the optimal buoy diameter D i If it is equal to the current buoy diameter D, then keep the current buoy diameter; otherwise adjust to the matching buoy diameter D i ; (6) Record the effect of each adjustment and optimize subsequent decisions through data feedback; (7) The artificial intelligence measures the wave period at a certain interval according to the frequency selected by itself and repeats steps (2) to (5).

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