A marine floating photovoltaic and wave power integrated device and power generation method

Abstract

The application discloses a marine floating photovoltaic and wave power integrated device, which comprises a plurality of floating bodies arranged in an array, a photovoltaic panel for photovoltaic power generation is fixedly arranged on the top of the floating body, a plurality of push rods are slidably arranged on the floating body, the push rods arranged on different floating bodies are connected through movable connectors, a turbine fan, a generator and a plurality of air chambers are arranged in the floating body, the turbine fan is fixedly sleeved on the input shaft of the generator, the air chamber is provided with two air inlets and one air outlet, a piston is connected to the push rod corresponding to the air chamber, the piston can extrude the gas in the air chamber from the air outlet to form a power generation gas flow during movement, and the power generation gas flow acts on the turbine fan to drive the turbine fan to rotate. The application provides a marine floating photovoltaic and wave power integrated device and a power generation method, the generator and the turbine fan are arranged in the interior of the floating body, do not need to be in contact with seawater for a long time, are not easy to be eroded, have a longer service life, and are more stable in power generation.

Description

Technical Field

[0001] This invention relates to the field of marine photovoltaic power generation technology, specifically to an integrated floating photovoltaic and wave power generation device and method. Background Technology

[0002] Floating photovoltaic (PV) systems are an emerging power generation technology that utilizes vast ocean surfaces to deploy numerous PV modules for highly efficient power generation. Furthermore, the movement of the floating hulls with the waves generates significant kinetic energy, which can be converted into electricity—a process known as wave power generation. The combination of these two technologies effectively improves power generation efficiency. In existing technologies, floating PV systems primarily rely on ocean currents to directly drive impellers to power generators when simultaneously generating wave power. However, these impellers are subject to long-term seawater erosion, resulting in a limited lifespan. Additionally, adjacent floating hulls are often connected by simple hinges, limiting their relative range of motion and leading to stress concentration, further reducing the overall lifespan of the system. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an integrated floating photovoltaic and wave power generation device and method. The generator and turbine fan are located inside the floating body, eliminating the need for prolonged contact with seawater, reducing susceptibility to corrosion, resulting in a longer overall lifespan and more stable power generation.

[0004] To achieve the above objectives, the specific solution adopted by the present invention is as follows:

[0005] A floating photovoltaic and wave power generation integrated device for marine applications includes multiple floats arranged in an array. A photovoltaic panel for photovoltaic power generation is fixedly mounted on the top of each float. Multiple push rods slide through each float, and these push rods can be connected to adjacent floats via movable connectors. Each float contains a turbine fan, a generator, and multiple air chambers. The turbine fan is fixedly mounted on the input shaft of the generator. Each air chamber has two air inlets and one air outlet. Each push rod extends into an air chamber and is connected to a piston. During piston movement, the piston can expel gas from the air chamber through the air outlet to form a power-generating airflow. This power-generating airflow acts on the turbine fan, driving it to rotate.

[0006] Preferably, the movable connector includes two hemispherical shells, which are fixedly connected by a plurality of bolts to form a connecting spherical shell. The connecting spherical shell is fixedly mounted on the float. The connecting spherical shell has an opening with a diameter larger than that of the push rod. A connecting ball is rotatably mounted inside the connecting spherical shell. The push rod can pass through the opening and is fixedly connected to the connecting ball.

[0007] Preferably, the air chamber is provided with a partition, which divides the inner cavity of the air chamber into two interconnected first air guide chambers and second air guide chambers. The piston is slidably disposed in the first air guide chamber. Both air inlets are connected to the first air guide chamber, and the two air inlets are respectively located on both sides of the piston. The air outlet is connected to both the first air guide chamber and the second air guide chamber.

[0008] Preferably, the air chamber is fixedly connected to an air outlet shell, the first air guide chamber and the second air guide chamber are both connected to the air outlet shell, and the air outlet is opened on the air outlet shell.

[0009] Preferably, gas switch valves are provided at the air inlet, the communication position between the first air guide chamber and the air outlet shell, and the communication position between the second air guide chamber and the air outlet shell, and the opening and closing state of the gas switch valves can be changed during the piston movement.

[0010] Preferably, the gas switch valve includes a cylindrical vent cover and a gas exchange balloon that is movably disposed within the vent cover. The two ends of the vent cover contract to form limiting portions for limiting the gas exchange balloon. When the gas exchange balloon moves to one end of the vent cover, the gas switch valve is in an open state, and when the gas exchange balloon moves to the other end of the vent cover, the gas switch valve is in a closed state.

[0011] Preferably, a plurality of positioning grooves are fixedly provided on the inner wall of the float, and the air chamber is fixedly provided in the positioning grooves accordingly.

[0012] Preferably, a counterweight adjustment chamber is fixedly installed inside the float, and at least one counterweight block is installed in the counterweight adjustment chamber.

[0013] Preferably, the float is configured as a rectangular box, the float includes a top, a bottom and four sides, and a push rod is movably inserted through each of the sides.

[0014] A power generation method, based on the aforementioned integrated offshore floating photovoltaic and wave power generation device, includes the following steps:

[0015] Deploy the device and adjust the draft of the float so that the push rod is above sea level;

[0016] The photovoltaic panel is used to generate photovoltaic power to obtain the first electrical energy.

[0017] As the buoy moves with the waves, the push rod pushes the piston, causing the gas in the air chamber to be blown out from the air outlet to form the power generation airflow, and the power generation airflow drives the turbine fan to rotate, so that the generator generates electricity to obtain a second electrical energy;

[0018] The first electrical energy and the second electrical energy are collected to complete the power generation.

[0019] In this invention, during the undulating motion of the float due to the influence of ocean waves, a push rod drives a piston to move, which in turn squeezes the gas in the air chamber to form a power-generating airflow. This power-generating airflow is used to transfer the kinetic energy of the float's motion to a turbine fan to drive a generator. The generator and turbine fan are located inside the float, so they do not need to be in contact with seawater for a long time, are not easily corroded, have a longer overall lifespan, and generate more stable power. This invention uses a combination of photovoltaic power generation and wave power generation, resulting in higher power generation efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the distribution of the buoys in this invention;

[0022] Figure 2 This is a schematic diagram of the connection method of the floating body;

[0023] Figure 3 This is a schematic diagram of the internal structure of the floating body;

[0024] Figure 4 This is a schematic diagram of the air chamber distribution.

[0025] Figure 5 This is a schematic diagram of the structure of a gas switch valve.

[0026] Reference numerals: 1-Float, 101-Inner wall, 2-Photovoltaic panel, 3-Transmission assembly, 301-Push rod, 302-Connecting ball, 303-Piston, 4-Modible connector, 401-Hemispherical shell, 402-Bolt, 5-Air chamber, 5011-First mesh cover, 5012-Second mesh cover, 5013-Third mesh cover, 5014-Fourth mesh cover, 502-Air outlet shell, 503-Air outlet, 504-Change ball, 6-Turbine fan, 7-Generator, 8-Positioning slot, 9-Counterweight adjustment chamber. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1 to 5 As shown, an integrated floating photovoltaic and wave power generation device for marine applications includes multiple floats 1 arranged in an array. A photovoltaic panel 2 for photovoltaic power generation is fixedly installed on the top of the float 1. Multiple push rods 301 slide through the float 1, and the push rods 301 can be connected to adjacent floats 1 through movable connectors 4. A turbine fan 6, a generator 7, and multiple air chambers 5 are arranged inside the float 1. The turbine fan 6 is fixedly sleeved on the input shaft of the generator 7. The air chambers 5 are provided with two air inlets and one air outlet 503. The push rods 301 extend into the air chambers 5 and are connected to pistons 303. During the movement of the pistons 303, the gas in the air chambers 5 can be squeezed out from the air outlet 503 to form a power generation airflow. The power generation airflow acts on the turbine fan 6 to drive the turbine fan 6 to rotate.

[0029] In use, after selecting a target sea area, all the floats 1 are placed in the target sea area. The floats 1 float on the sea surface, and the photovoltaic panels 2 can receive sunlight to generate photovoltaic power and obtain the first type of electrical energy. On the other hand, the floats 1 will be affected by the waves and sway. During this process, the push rod 301 can move relative to the floats 1. The direction of movement of the push rod 301 varies depending on the movement of the floats 1; it may move towards the inside or outside of the floats 1. During the movement of the push rod 301, it can drive the piston 303 to move synchronously. The piston 303 then squeezes the gas in the air chamber 5 out of the air outlet 503 to form a power generation airflow. The power generation airflow acts on the turbine fan 6, driving the turbine fan 6 to rotate. Finally, the turbine fan 6 drives the generator 7 to generate electricity and obtain the second type of electrical energy. The power generation process is completed by collecting the first and second types of electrical energy. Throughout the power generation process, the photovoltaic panel 2 generates photovoltaic power, while the generator 7 generates power by utilizing the energy generated by the movement of the floating body 1 driven by waves. Therefore, the generator 7 generates wave power. This invention simultaneously achieves photovoltaic power generation and wave power generation, which can effectively improve power generation efficiency.

[0030] It should also be noted that during the movement of piston 303, the gas in air chamber 5 needs to be squeezed out from air outlet 503, and gas needs to be drawn in from air inlet to ensure pressure balance inside and outside air chamber 5. In order to avoid the decrease in the total amount of gas in air chamber 5 due to the intake of seawater, which would lead to a decrease in power generation efficiency, when placing float 1 in the target sea area, the draft of float 1 needs to be adjusted to ensure that air inlet and air outlet 503 are above the sea level. Ideally, it should be ensured that seawater will not enter air chamber 5 from air inlet and air outlet 503 during any movement of float 1.

[0031] Because adjacent floats 1 move differently during their movement, to ensure that any movement of adjacent floats 1 can drive the push rod 301, the movable connector 4 includes two hemispherical shells 401. These two hemispherical shells 401 are fixedly connected by multiple bolts 402 to form a connecting spherical shell. The connecting spherical shell is fixedly mounted on the float 1 and has an opening with a diameter larger than the diameter of the push rod 301. A connecting ball 302 is rotatably mounted inside the connecting spherical shell, allowing the push rod 301 to pass through the opening and be fixedly connected to the connecting ball 302. By using this movable connector 4, the push rod 301 can rotate within a certain range around the center of the connecting ball 302, enabling relative displacement of the two adjacent floats 1 in multiple different directions, increasing flexibility and thus improving the power generation efficiency of the generator 7. It should also be noted that the range of rotation of the push rod 301 is limited by the opening.

[0032] In other embodiments of the present invention, the movable connector 4 can also be configured as other structures with universal connection function, such as a cross-shaped rigid universal joint, and a corrosion-resistant structure is required to prevent rapid corrosion from causing the two adjacent floats 1 to disconnect.

[0033] The specific structure of the air chamber 5 is as follows: An internal partition is provided within the air chamber 5, dividing its inner cavity into two interconnected air guide chambers, a first air guide chamber and a second air guide chamber. The piston 303 is slidably disposed in the first air guide chamber. Both air inlets are connected to the first air guide chamber and are located on opposite sides of the piston 303. The air outlet 503 is connected to both the first and second air guide chambers. During movement, the piston 303 can draw in gas through one of the air inlets. Because the first and second air guide chambers are connected, the gas drawn into the first air guide chamber can also enter the second air guide chamber. The gas inside the air chamber 5 can then be expelled from the air outlet 503.

[0034] Furthermore, the air chamber 5 is fixedly connected to an air outlet shell 502. Both the first and second air guide chambers are connected to the air outlet shell 502, and the air outlet 503 is opened on the air outlet shell 502. Through the arrangement of the air outlet shell 502, during the movement of the piston 303, the gas in the air chamber 5, whether flowing out from the first or second air guide chamber, can be squeezed out from the air outlet 503, thereby ensuring that it can act on the turbine fan 6 to drive the turbine fan 6 to rotate.

[0035] To prevent gas from flowing out of the air inlet during the movement of piston 303, gas switching valves are provided at the air inlet, the connection points between the first air guide chamber and the air outlet shell 502, and the connection points between the second air guide chamber and the air outlet shell 502. These valves can change their on / off state during piston 303 movement. The gas switching valve includes a cylindrical vent shroud and a gas exchange ball 504 that is movable within the vent shroud. The two ends of the vent shroud contract to form limiting parts for restricting the gas exchange ball 504. When the gas exchange ball 504 moves to one end of the vent shroud, the gas switching valve is in the open state; when the gas exchange ball 504 moves to the other end of the vent shroud, the gas switching valve is in the closed state.

[0036] More specifically, such as Figure 5 As shown, the partition is horizontally arranged, dividing the inner cavity of the gas chamber 5 into a first air guiding chamber and a second air guiding chamber distributed vertically. Four gas switching valves are provided, located at the connection points between the first air guiding chamber and the air outlet shell 502, the second air guiding chamber and the air outlet shell 502, and the two air inlets, respectively. The vent covers of the four gas switching valves are designated as a first mesh cover 5011, a second mesh cover 5012, a third mesh cover 5013, and a fourth mesh cover 5014. Specifically, the first mesh cover 5011 and the second mesh cover 5012 are located at the two air inlets, the third mesh cover 5013 is located at the connection point between the first air guiding chamber and the air outlet shell 502, and the fourth mesh cover 5014 is located at the connection point between the second air guiding chamber and the air outlet shell 502. Figure 5 For example, when piston 303 moves to the right, the air exchanger 504 in the first mesh cover 5011 is located on the right side, opening the air inlet on the left. External gas enters the air chamber 5 from the air inlet on the left. The air exchanger 504 in the second mesh cover 5012 is also located on the right side, thus closing the air inlet on the right and preventing gas from leaking out from the air inlet on the right. The air exchanger 504 in the third mesh cover 5013 is also located on the right side, allowing the gas in the first air guide chamber to enter the air outlet shell 502. The air exchanger 504 in the fourth mesh cover 5014 is located on the left side, thus closing the connection between the second air guide chamber and the air outlet shell 502, preventing the gas in the air outlet shell 502 from flowing back into the second air guide chamber, thereby ensuring that the gas can flow out smoothly from the air outlet 503.

[0037] Conversely, as the piston 303 moves to the left, the air exchange balloons 504 in the first mesh cover 5011, the second mesh cover 5012, and the third mesh cover 5013 are all located on the left side, while the air exchange balloons 504 in the fourth mesh cover 5014 are located on the right side. This closes the left air inlet and the connection between the first air guide chamber and the air outlet shell 502. External gas enters the first air guide chamber from the right air inlet, and the gas originally in the first and second air guide chambers enters the air outlet shell 502 from the connection between the second air guide chamber and the air outlet shell 502, and then flows out from the air outlet 503.

[0038] With the setting of four gas switch valves, no matter how the piston 303 moves, the gas in the gas chamber 5 can be squeezed out of the air outlet 502 to form a power generation airflow, and no active control is required, making it easier to implement and cheaper.

[0039] To fix the position of the air chamber 5 and improve the stability of the power generation airflow, multiple positioning grooves 8 are fixedly provided on the inner wall 101 of the float 1, and the air chamber 5 is fixedly positioned in the positioning grooves 8. The positioning grooves 8 can limit the position of the air chamber 5 to ensure the stability of the position of the air chamber 5.

[0040] To facilitate adjustment of the draft of the float 1 and ensure that both the air inlet and outlet 502 are above the sea surface to prevent seawater from entering the air chamber 5, a counterweight adjustment chamber 9 is fixedly installed inside the float 1. The counterweight adjustment chamber 9 contains at least one counterweight block. By controlling the number of counterweight blocks, the overall weight of the float 1 can be controlled, thereby changing the draft of the float 1.

[0041] In one embodiment of the present invention, all the floats 1 are arranged in a matrix, and each float 1 is a rectangular box with a length, width, and height of 1m, 1m, and 0.5m, respectively, and a wall thickness of 0.02m. Each float 1 includes a top, a bottom, and four sides, and a push rod 301 is movably inserted through each side. In this case, all the floats 1 can be arranged arbitrarily. In other embodiments of the present invention, the push rod 301 can be inserted only on two adjacent sides, while a connecting spherical shell is fixedly installed on the other two sides. In this case, the floats 1 need to be arranged according to certain rules to avoid the situation where the sides of two adjacent floats 1 with connecting spherical shells face each other, otherwise it will be impossible to successfully connect the two floats 1.

[0042] The present invention also provides a power generation method based on the above-mentioned integrated floating photovoltaic and wave power generation device, the method comprising S1 to S4.

[0043] S1. Deploy the device and adjust the draft of the float 1 so that the push rod 301 is above the sea level.

[0044] S2. Obtain the first electrical energy by using photovoltaic power generation through photovoltaic panel 2.

[0045] S3. As the float 1 moves with the waves, the push rod 301 pushes the piston 303, causing the gas in the air chamber 5 to be blown out from the air outlet 503, forming a power-generating airflow. This power-generating airflow drives the turbine fan 6 to rotate, causing the generator 7 to generate electricity and obtain a second source of electrical energy. The specific power generation process has been described in detail above and will not be repeated here.

[0046] S4. Collect the first and second electrical energy to complete power generation. Because the lighting environment of the photovoltaic panel 2 and the movement state of the floating body 1 are both unstable, the first and second electrical energy are also unstable and need to be rectified before they can be connected to the grid or stored. The specific operation methods are all existing technologies in this field and will not be described in detail here.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A floating photovoltaic and wave power generation integrated device for marine applications, comprising multiple floats (1) arranged in an array, wherein photovoltaic panels (2) for photovoltaic power generation are fixedly mounted on the top of each float (1), characterized in that, Multiple push rods (301) are slidably passed through the float (1), and the push rods (301) can be connected to the adjacent floats (1) through the movable connector (4). The float (1) is provided with a turbine fan (6), a generator (7) and multiple air chambers (5). The turbine fan (6) is fixedly sleeved on the input shaft of the generator (7). The air chamber (5) is provided with two air inlets and one air outlet (503). The push rods (301) are connected to the piston (303) after being inserted into the air chamber (5). During the movement of the piston (303), the gas in the air chamber (5) can be squeezed out from the air outlet (503) to form a power generation airflow. The power generation airflow acts on the turbine fan (6) to drive the turbine fan (6) to rotate. The air chamber (5) is provided with a partition, which divides the inner cavity of the air chamber (5) into two interconnected first air guide chambers and second air guide chambers. The piston (303) is slidably disposed in the first air guide chamber. Both air inlets are connected to the first air guide chamber, and the two air inlets are located on both sides of the piston (303). The air outlet (503) is connected to both the first air guide chamber and the second air guide chamber. The air chamber (5) is fixedly connected to the air outlet shell (502), and the first air guide chamber and the second air guide chamber are both connected to the air outlet shell (502). The air outlet (503) is opened on the air outlet shell (502). Gas switch valves are provided at the air inlet, the communication position between the first air guide chamber and the air outlet shell (502), and the communication position between the second air guide chamber and the air outlet shell (502). The piston (303) can change the opening and closing state of the gas switch valves during the movement of the piston (303). The gas switch valve includes a cylindrical vent and a gas exchange ball (504) that is movably disposed inside the vent. The two ends of the vent are contracted to form a limiting part for limiting the gas exchange ball (504). When the gas exchange ball (504) moves to one end of the vent, the gas switch valve is in the open state, and when the gas exchange ball (504) moves to the other end of the vent, the gas switch valve is in the closed state.

2. The integrated floating photovoltaic and wave power generation device as described in claim 1, characterized in that, The movable connector (4) includes two hemispherical shells (401), which are fixedly connected by multiple bolts (402) to form a connecting spherical shell. The connecting spherical shell is fixedly installed on the float (1). The connecting spherical shell is provided with an opening, the diameter of which is larger than the diameter of the push rod (301). A connecting ball (302) is rotatably installed inside the connecting spherical shell. The push rod (301) can pass through the opening and be fixedly connected to the connecting ball (302).

3. The integrated floating photovoltaic and wave power generation device for marine applications as described in claim 1, characterized in that, Multiple positioning grooves (8) are fixedly provided on the inner wall (101) of the float (1), and the air chamber (5) is fixedly provided in the positioning grooves (8).

4. The integrated floating photovoltaic and wave power generation device as described in claim 1, characterized in that, The float (1) is fixedly provided with a counterweight adjustment chamber (9), and at least one counterweight block is provided in the counterweight adjustment chamber (9).

5. The integrated floating photovoltaic and wave power generation device as described in claim 1, characterized in that, The float (1) is configured as a rectangular box, and the float (1) includes a top, a bottom and four sides, and a push rod (301) is movably inserted through each of the sides.

6. A power generation method, based on an integrated offshore floating photovoltaic and wave power generation device as described in any one of claims 1-5, characterized in that, The method includes the following steps: Deploy the device and adjust the draft of the float (1) so that the push rod (301) is above the sea level; The photovoltaic panel (2) is used to generate photovoltaic power to obtain the first electrical energy; As the floating body (1) moves with the waves, the push rod (301) pushes the piston (303) to drive the gas in the air chamber (5) to be blown out from the air outlet (503) to form the power generation airflow, and the power generation airflow drives the turbine fan (6) to rotate so that the generator (7) generates electricity to obtain the second electrical energy; The first electrical energy and the second electrical energy are collected to complete the power generation.

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