Variable-diameter wave power generation buoy and method

Abstract

The invention relates to the technical field of wave power generation buoys, in particular to a variable-diameter wave power generation buoy and a method thereof.The variable-diameter wave power generation buoy comprises a main barrel cover and a waterproof rubber ring, an annular base plate is arranged at the bottom of the main barrel cover, and the base plate is wrapped by the waterproof rubber ring; a mounting cavity is formed between the main cylinder cover and the chassis, and an expansion mechanism for controlling the waterproof rubber ring to expand and shrink and a sensor for collecting wave period data are arranged in the mounting cavity. A traditional power driving system is replaced by the self-adaptive geometric adjustment mechanism which is innovatively designed, and the buoy diameter parameters are dynamically optimized by combining real-time wave monitoring data, so that a wave power generation solution with the energy conversion efficiency advantage and the engineering practical value is formed.

Description

Technical Field

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

[0002] As a widely distributed and renewable clean energy, wave energy is of great significance to the transformation of the energy structure for its efficient development and utilization. The oscillating buoy type wave energy power generation device has become one of the mainstream technical routes due to its simple structure and strong adaptability.

[0003] However, the energy capture efficiency of the buoy depends on the matching degree between its natural frequency and the wave frequency (resonance effect). The diameter of the traditional buoy is fixed. When the wave period deviates from the design value (such as storms or seasonal changes), the energy capture efficiency drops significantly. Experiments show that when the wave period of the fixed-diameter buoy changes by ±20%, the efficiency loss reaches 40%-60%. It can be seen that the traditional fixed-diameter buoy is limited by the contradiction between "static design" and "dynamic sea conditions", and cannot adjust its own diameter according to the sea conditions, resulting in a reduction in energy capture efficiency.

[0004] To solve this problem, the Chinese patent application with the publication number CN108087188A proposes a point floating wave energy power generation device with a variable buoy area; the Chinese patent application with the publication number CN119641536 discloses a floating wave energy power generation equipment with a variable energy capture body structure and a controllable energy conversion system; the Chinese patent application with the publication number CN103939271A discloses a combined oscillating buoy wave energy power generation device. Although these methods break through the physical limitations of traditional fixed buoys by introducing complex mechanical structures, they still have obvious disadvantages: on the one hand, they cannot maximize the energy capture efficiency; on the other hand, their complex transmission mechanisms lead to a lag in the system's dynamic response and increase the maintenance cost. Summary of the Invention

[0005] In view of the deficiencies of 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 thereof.

[0006] To solve the above technical problem, the technical solution adopted by the present invention is: a wave energy power generation buoy with a variable diameter, including a main cylinder cover and a waterproof rubber ring. A circular chassis is provided at the bottom of the main cylinder cover, and the waterproof rubber ring wraps the chassis. An installation cavity is arranged inside between the main cylinder 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 arranged in the installation cavity.

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

[0008] Preferably, the conical lifting platform is fixed to the bottom of a retractable fork-shaped retraction frame. The top of the fork-shaped retraction frame is mounted on a mounting seat. A transmission mechanism for controlling the operation of the fork-shaped retraction frame is arranged on the mounting seat. The mounting seat is mounted on a closed disc, and the closed disc is mounted 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 to work is mounted on the closed disc.

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

[0011] Preferably, concave grooves are respectively formed in the upper and lower end faces of the slider, and convex blocks corresponding to the concave grooves are mounted on the upper and lower inner top surfaces of the mounting hole.

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

[0013] The present invention also provides a regulation method for a variable-diameter wave energy power generation buoy. By using the above variable-diameter wave energy power generation buoy, the method includes the following steps: (1) Automatically adjust the sensor through artificial intelligence to collect wave period data at the frequency most suitable for the sea condition; (2) Monitor the current wave period T(i) through the sensor; (3) The artificial intelligence loads the currently measured wave period into the sea condition safety assessment system for evaluation, and judges whether T(i) is within the safe period range of the equipment operation. If T(i) is not within the safe range, the equipment is immediately paused; if T(i) is within the safe range, the next step is carried out; (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 matched optimal buoy diameter D i is equal to the current buoy diameter D, the current buoy diameter is maintained, otherwise it is adjusted to the matched buoy diameter D; i ; (6) Record the adjustment effect each time, and optimize the subsequent decision through data feedback; (7) The artificial intelligence measures the wave period at a certain time interval according to the frequency selected by itself, and repeats steps (2) to (5).

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention replaces the traditional power drive system with an innovatively designed adaptive geometry adjustment mechanism, and dynamically optimizes the buoy diameter parameter by combining real-time wave monitoring data, thereby achieving three technological breakthroughs while simplifying the system structure: efficient wave energy capture based on hydrodynamic characteristics, a real-time dynamic response mechanism relying on intelligent sensing, and a low-maintenance operation and maintenance system achieved through modular design. Finally, a wave energy power generation solution with both energy conversion efficiency advantages and engineering practical value is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0016] Figure 2 It is a schematic internal structure diagram of an embodiment of the present invention.

[0017] Figure 3 It is a schematic transmission structure diagram of a fork-shaped telescopic frame and a worm and worm gear mechanism of an embodiment of the present invention.

[0018] Figure 4 It is a top view distribution diagram of a slider of an embodiment of the present invention.

[0019] Figure 5 It is a schematic flow diagram of a buoy regulation method of an embodiment of the present invention.

[0020] Figure 6 It is a schematic diagram of the relationship between the wavelength and the wave period of an embodiment of the present invention.

[0021] Reference numerals in the drawings: 1, main cylinder cover; 2, screw; 3, waterproof rubber ring; 4, closed disc; 5, crank-slider mechanism; 6, fork-shaped retractable frame; 7, conical lifting platform; 8, slider; 9, worm and worm gear mechanism; 10, chassis. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the above features and advantages of the present invention more obvious and understandable, specific embodiments are hereinafter given and described in detail in conjunction with the accompanying drawings.

[0023] As Figures 1 to 4 shown, 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 cylinder cover 1 and a waterproof rubber ring 3. A circular chassis 10 is provided at the bottom of the main cylinder cover 1, and the waterproof rubber ring 3 wraps the chassis 10 inside. An installation cavity is provided inside between the main cylinder 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.

[0024] In this embodiment, the expansion mechanism includes a plurality of sliders 8, which are circumferentially distributed on the chassis 10. The side wall of the chassis 10 is provided with a plurality of mounting holes corresponding to the sliders 8. A conical lifting table 7 is liftably arranged in the middle of the chassis 10, and the side walls of the conical lifting table 7 are respectively in contact with the plurality of sliders 8.

[0025] In this embodiment, the conical lifting table 7 is fixed to the bottom of a retractable fork-shaped retraction frame 6. The top of the fork-shaped retraction frame 6 is installed on a mounting seat, and a transmission mechanism for controlling the operation of the fork-shaped retraction frame is arranged on the mounting seat. The mounting seat is installed on a closed disc 4, and the closed disc 4 is installed in the main cylinder cover 1.

[0026] In this embodiment, the transmission mechanism is a crank-slider mechanism 5, and a driving mechanism for driving the crank-slider mechanism 5 to work is installed on the closed disc 4.

[0027] In this embodiment, the driving mechanism is a worm and worm gear mechanism 9 controlled by a motor, and the motor is installed on the top of the closed disc 4. The stable operation of the whole device is realized through the self-locking characteristic of the worm and worm gear mechanism 9.

[0028] In this embodiment, concave grooves are respectively formed on the upper and lower end faces of the slider 8, and convex blocks corresponding to the concave grooves are installed on the upper and lower inner top surfaces of the mounting hole. Through the mutual cooperation of the two, the slider 8 can slide along a predetermined direction.

[0029] In this embodiment, the waterproof rubber ring 3 and the upper part of the chassis 10 are fixedly connected by screws.

[0030] Working principle: The worm and worm gear mechanism 9 is controlled by the motor to work. The worm and worm gear mechanism 9 drives the crank-slider mechanism 5 to work. The crank-slider mechanism 5 controls the lifting of the fork-shaped retraction frame 6. The fork-shaped retraction frame 6 drives the conical lifting table 7 to lift. When the conical lifting table 7 descends, the side surface of the conical lifting table 7 contacts the plurality of sliders 8 and pushes the plurality of sliders 8 to move outwards respectively. The sliders 8 then expand the waterproof rubber ring 3 outwards, so as to realize the expansion of the diameter of the waterproof rubber ring 3. When the conical lifting table 7 rises, the waterproof rubber ring 3 automatically contracts and pushes the slider 8 to reset.

[0031] As Figure 5 shown, the present invention also provides a regulation method for a variable-diameter wave energy power generation buoy, adopting the above-mentioned variable-diameter wave energy power generation buoy, including the following steps: (1) Automatically adjust the sensor through artificial intelligence (AI) to collect wave period data at the frequency most suitable for the sea conditions; (2) Monitor the current wave period T(i) through the sensor; (3) The artificial intelligence (AI) loads the currently measured wave period into the sea condition safety assessment system for evaluation to determine whether T(i) is within the safe period range for the operation of the device. If T(i) is not within the safe range, the device is immediately suspended; if T(i) is within the safe range, the next step is carried out; (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 matched optimal buoy diameter D i is equal to the current buoy diameter D, the current buoy diameter is maintained; otherwise, it is adjusted to the matched buoy diameter D i ; (6) Record the adjustment effect each time and optimize subsequent decisions through data feedback; (7) The artificial intelligence (AI) measures the wave period at regular intervals according to the frequency it selects and repeats steps (2) to (5).

[0032] Construct a wavelength-diameter mapping relationship database according to formula (1). When the sensor detects the real-time wave wavelength, rely on the AI algorithm to dynamically match the optimal buoy diameter, synchronously adjust the natural frequency of the device, so that the hydrodynamic parameters of the device are matched with the wave excitation frequency in real time, realizing efficient energy conversion, low-cost operation and maintenance, and millisecond-level dynamic response; at the same time, integrate the sea condition safety assessment system to evaluate the wave parameters and safety thresholds in real time, and immediately trigger the protection mechanism when exceeding the preset range.

[0033] C wr = λ / 2πD = n (1) Where, 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 by itself according to the economy of the device, etc.

[0034] As Figure 6 shown, the core principle of the present invention is to optimize the matching of the natural frequency and the wave frequency by adjusting the buoy diameter. Formula (1) shows the calculation formula of the relative capture width C wr of the buoy. In the formula, the wavelength λ is closely related to the buoy diameter D, and the wavelength λ is closely related to the wave period T.

[0035] Therefore, by obtaining the wave period data in real time through the sensor, the corresponding relationship between the wave parameters and the buoy diameter can be directly established.

[0036] Among them, the relationship between λ and the wave period T is shown in Table 1 below: Table 1 The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any person skilled in the art who does not depart from the content of the technical solution of the present invention and makes any simple modifications, equivalent changes and modifications to the above embodiments based on the technical essence of the present invention shall fall within the scope of the present invention.

Claims

1. A wave energy generating buoy with variable diameter, characterized in that: It includes a main cylinder cover and a waterproof rubber ring. A circular chassis is provided at the bottom of the main cylinder cover, and the waterproof rubber ring wraps the chassis. An installation cavity is arranged inside between the main cylinder 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 arranged in the installation cavity.

2. The wave energy generating buoy with variable diameter according to claim 1, characterized in that: The expansion mechanism includes a plurality of sliders, which are circumferentially distributed on the chassis. A plurality of installation holes corresponding to the sliders are formed in the side wall of the chassis. A conical lifting platform is liftably arranged in the middle of the chassis, and the side walls of the conical lifting platform are respectively in contact with the plurality of sliders.

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

4. The wave energy generating buoy with variable diameter according to claim 3, characterized in that: The transmission mechanism is a crank-slider mechanism, and a driving mechanism for driving the crank-slider mechanism to work is installed on the closed disc.

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

6. The wave energy generating buoy with variable diameter according to claim 2, characterized in that: Concave grooves are respectively formed on the upper and lower end surfaces of the slider, and convex blocks corresponding to the concave grooves are installed on the upper and lower inner top surfaces of the installation hole.

7. The wave energy generating buoy with variable diameter according to claim 1, characterized in that: The waterproof rubber ring and the upper part of the chassis are connected and fixed by screws.

8. A control method for a wave energy generating buoy with variable diameter, using the wave energy generating buoy with variable diameter as claimed in claim 1, characterized in that, It includes the following steps: (1) Automatically adjust the sensor through artificial intelligence to collect wave period data at a frequency most suitable for the sea condition; (2) Monitor the current wave period T(i) through the sensor; (3) The artificial intelligence loads the currently measured wave period into the sea condition safety assessment system for evaluation, and judges whether T(i) is within the safe period range of the equipment operation. If T(i) is not within the safe range, the equipment is immediately suspended; If T(i) is within 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 ; If the diameter D of the optimal buoy that is matched i is equal to the diameter D of the current buoy, the diameter of the current buoy is maintained; otherwise, it is adjusted to the diameter D of the matched buoy i ; (6) Record the adjustment effect each time, and optimize subsequent decisions through data feedback; (7) According to the frequency selected by itself, the artificial intelligence measures the wave period at a certain time interval, and repeats steps (2) to (5).

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