Photovoltaic and tidal current energy integrated offshore power generation device and method

Abstract

The invention relates to the technical field of ocean energy power generation, and discloses a photovoltaic and tidal current energy integrated offshore power generation device and method.The device comprises a floating photovoltaic assembly and a tidal current energy power generation assembly; a mounting position is arranged in the center of the bottom of the floating photovoltaic module; the top end of the power generation telescopic mechanism is arranged at a mounting position at the bottom of the floating type photovoltaic module; the bottom end of the power generation telescopic mechanism is connected with one end of the steering shaft, and the power generation telescopic mechanism drives the steering shaft to move in the vertical direction. The other end of the steering shaft is connected to the base; a plurality of anchoring assemblies are annularly arranged on the floating photovoltaic assembly and the base; the turbofan mechanism is arranged on the steering shaft, the turbofan mechanism and the power generation telescopic mechanism are driven by the steering shaft to move in the circumferential direction, and the driving end of the turbofan mechanism is connected to the power generation telescopic mechanism. The floating photovoltaic assembly and the tidal current energy power generation assembly are combined, and comprehensive utilization of solar energy and ocean tidal current energy is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of marine energy power generation, and in particular to a photovoltaic and tidal energy integrated marine power generation device and method. Background Art

[0002] As two innovative technologies in the field of ocean and water energy utilization, tidal power generation devices and floating photovoltaic systems are gradually showing their huge application potential and commercial value.

[0003] Tidal power generation devices, as an advanced technology that uses ocean tidal movement to generate electricity, have been widely tested and applied in many coastal areas around the world. By capturing the kinetic energy of water flow and converting it into electrical energy, this technology provides a solution for energy supply that is independent of weather conditions, has high energy density and is relatively stable. Although the current commercialization of tidal energy cannot be compared with wind or solar energy, its potential in the field of marine energy cannot be ignored, especially in areas with long coastlines and significant tidal movement, where the application prospects of tidal power generation devices are particularly broad.

[0004] At the same time, floating photovoltaic systems, as a major innovation in photovoltaic technology, are gradually changing the construction model of traditional photovoltaic power stations. These systems are cleverly installed on the surface of water bodies, such as lakes, reservoirs and offshore areas. They not only effectively save precious land resources, but also significantly reduce the heat loss of solar panels through the natural cooling effect of water bodies, thereby improving power generation efficiency. In addition, floating photovoltaic systems can effectively reduce evaporation from the water surface and play a certain role in protecting water resources. At present, floating photovoltaic technology has been put into commercial operation in many countries around the world, especially in countries with limited space resources, such as Japan and the Netherlands, where the technology has received widespread attention and attention.

[0005] However, current tidal power generation devices are usually designed to generate tidal energy within a fixed water layer depth. This design limits the range of tidal energy capture by the device to a certain extent, especially when encountering a water layer with a lower flow rate, its power generation efficiency will drop significantly. Since the tidal flow rate in the ocean often varies between different water layers, the design of a fixed water layer depth makes it impossible for the device to fully utilize the water layer with a higher flow rate and richer energy, which seriously affects the acquisition of transmission power and the overall power generation efficiency.

[0006] Therefore, how to overcome the limitations of existing tidal energy power generation devices in generating electricity within a fixed water layer depth and improve the adaptability and power generation efficiency of the devices to water layers with different flow rates has become a technical problem that needs to be solved urgently. Summary of the invention

[0007] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide a photovoltaic and tidal energy integrated offshore power generation device and method to solve the technical problem in the prior art of how to effectively integrate photovoltaic and tidal energy while improving the power generation efficiency of the tidal energy power generation device.

[0008] The present invention is achieved through the following technical solutions: In a first aspect, the present invention provides a photovoltaic and tidal energy integrated offshore power generation device, including a floating photovoltaic module and a tidal energy power generation module; A mounting position is provided at the bottom center of the floating photovoltaic assembly; The tidal energy power generation assembly includes a power generation telescopic mechanism, a turbofan mechanism, a steering shaft and a base; The top end of the power generation telescopic mechanism is arranged at the installation position at the bottom of the floating photovoltaic assembly; The bottom end of the power generation and telescopic mechanism is connected to one end of the steering shaft, and the steering shaft is driven by the power generation and telescopic mechanism to move in the vertical direction; the other end of the steering shaft is connected to the base; the floating photovoltaic assembly and the base are provided with a plurality of anchoring assemblies in an annular direction; The turbofan mechanism is arranged on the steering shaft, and the turbofan mechanism and the power generation and retractable mechanism are driven by the steering shaft to move along the circumferential direction, and the driving end of the turbofan mechanism is connected to the power generation and retractable mechanism.

[0009] Preferably, the power generation and telescopic mechanism comprises a generator compartment, a motor compartment, a telescopic shaft and a telescopic screw; The top of the generator cabin is arranged at the installation position at the bottom of the floating photovoltaic module, and the bottom of the generator cabin is connected to the motor cabin; a telescopic motor is arranged in the motor cabin; One end of the telescopic shaft is connected to the telescopic motor through the motor cabin, and the other end is sleeved on one end of the telescopic screw rod, and the other end of the telescopic screw rod is rotatably connected to the steering shaft.

[0010] Furthermore, the outer surface of the generator compartment is coated with a rotational lubrication layer.

[0011] Furthermore, a sealing groove is provided on the base, and a rotating motor is provided in the sealing groove; the bottom end of the steering shaft is connected to the rotating motor.

[0012] Furthermore, the turbofan mechanism includes a turbofan assembly and a bracket; The turbofan assembly includes a plurality of blades and a shaft body, wherein the plurality of blades are circumferentially arranged on the shaft body, and the driving end of the shaft body is fixed to the shaft body side wall of the steering shaft through a bracket, and is connected to the generator compartment through a telescopic shaft and a telescopic screw.

[0013] Preferably, the power generation and telescopic mechanism, the steering shaft and the base are all coaxially arranged.

[0014] Preferably, the floating photovoltaic assembly includes a buoy shell; the overall structure of the buoy shell is a disc-shaped structure; the mounting position is arranged at the bottom center of the buoy shell; a supporting bracket is arranged inside the buoy shell; and a plurality of photovoltaic panels are laid on the supporting bracket.

[0015] Furthermore, the two ends of the supporting bracket are fixedly connected to the two sides of the inner wall of the buoy shell through a connecting structure; an electrical equipment compartment is provided in the connecting structure for placing the inverter and wiring cables.

[0016] Preferably, the anchoring assembly comprises a mooring line and an anchoring foundation; The floating photovoltaic assembly and the base are respectively connected to the anchor foundation via a plurality of mooring cables.

[0017] In a second aspect, the present invention further provides a photovoltaic and tidal energy integrated offshore power generation method, based on the above-mentioned photovoltaic and tidal energy integrated offshore power generation device, comprising the following steps: The floating photovoltaic components and the tidal energy power generation components are respectively fixed in the sea in a circular manner through a plurality of anchoring components; The floating photovoltaic module floats on the sea surface to generate electricity through photovoltaics, while the tidal energy generation module dives into the sea and drives the turbofan mechanism through the water layer flow velocity to obtain transmission power. When it is detected that the power transmission power is decreasing, the turbofan mechanism is driven to move in the vertical direction by adjusting the power generation telescopic mechanism, and the steering shaft is adjusted to drive the turbofan mechanism to move in the circumferential direction, so as to capture the water layer with the highest flow rate and obtain the maximum power transmission power.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention provides a photovoltaic and tidal energy integrated offshore power generation device, which combines a floating photovoltaic module and a tidal energy power generation module to achieve the comprehensive utilization of solar energy and ocean tidal energy. This integrated design improves the utilization efficiency of the sea space, and can complement each other according to the characteristics of different energy sources to ensure the stability and continuity of power generation. The combination of the power generation telescopic mechanism, the steering shaft and the turbofan mechanism enables the tidal energy power generation part to respond to changes in the tidal direction, ensuring that the turbofan always faces the strongest tidal current, thereby improving the power generation efficiency.

[0019] Furthermore, the power generation and telescopic mechanism drives the movement of the telescopic shaft and the telescopic screw through the telescopic motor, making it have the characteristics of efficient and stable energy conversion. The driving force of the telescopic motor can directly act on the telescopic shaft, and then be transmitted to the steering shaft through the telescopic screw, realizing the effective transmission and conversion of energy, and improving the efficiency of the entire power generation system. The tidal energy power generation part can respond to changes in the tidal direction, ensuring that the turbofan always faces the strongest tidal current, thereby improving the power generation efficiency.

[0020] Furthermore, the outer surface of the generator cabin is coated with a rotational lubricating layer, which can form a lubricating film between the outer surface of the generator cabin and the surrounding environment, effectively reducing the friction between the two. This lubrication can significantly reduce the wear of the generator cabin during movement or rotation, and extend its service life.

[0021] Furthermore, a sealing groove is provided on the base, and a rotating motor is provided in the sealing groove; the bottom end of the steering shaft is connected to the rotating motor, and the rotating motor is installed in the sealing groove, which can effectively protect the motor from seawater erosion and mechanical damage, thereby improving the stability and durability of the entire system. By driving the steering shaft with a rotating motor, precise control of the circumferential direction of the turbofan mechanism can be achieved. This steering capability enables the system to automatically adjust the position of the turbofan mechanism according to changes in the direction and speed of the water flow to maximize the capture of tidal energy.

[0022] Furthermore, the turbofan mechanism includes a turbofan assembly and a bracket; the turbofan assembly includes a plurality of blades and a shaft body, the plurality of blades are circumferentially arranged on the shaft body, the driving end of the shaft body is fixed to the shaft body side wall of the steering shaft through the bracket, and is connected to the generator compartment through a telescopic shaft and a telescopic screw, and the blades of the turbofan assembly are circumferentially arranged on the shaft body, which can capture tidal energy to the maximum extent and convert it into mechanical energy. This design improves the energy capture efficiency and increases the power generation. The turbofan mechanism is connected to the generator compartment through a telescopic shaft and a telescopic screw, so that the turbofan assembly can be flexibly adjusted according to the direction and intensity of the tidal current. This design enhances the adaptability of the turbofan mechanism to different marine environments and improves the power generation efficiency. The driving end of the shaft body is directly connected to the steering shaft through the bracket, and is connected to the generator compartment through a telescopic shaft and a telescopic screw, which optimizes the energy transfer path and reduces the energy loss during the transfer process. This helps to improve the energy conversion efficiency of the entire power generation system.

[0023] Furthermore, the power generation telescopic mechanism, steering shaft and base are all coaxially arranged, which makes the power generation telescopic mechanism, steering shaft and base more compact in space, reduces the floor space, improves the space utilization efficiency, and can maintain higher efficiency during energy transmission. The coaxial connection between the telescopic mechanism, steering shaft and base reduces the loss of energy transmission, allowing more energy to be converted into electrical energy. This helps to improve power generation efficiency and increase power generation.

[0024] Furthermore, the overall structure of the buoy shell is disc-shaped, so that the buoy can provide better buoyancy and ensure that the photovoltaic module can float stably on the water. At the same time, the disc-shaped structure also helps to disperse the impact of the water flow on the buoy and improve stability. The installation position is set at the bottom center of the buoy shell, which is convenient for accurately installing components such as the power generation telescopic mechanism on the photovoltaic module. The installation process is simplified and the installation cost is reduced. At the same time, the several photovoltaic panels laid on the supporting bracket are also convenient for maintenance and repair work, which improves the reliability and service life of the photovoltaic module. The several photovoltaic panels laid on the supporting bracket can make full use of sunlight and improve the power generation efficiency of the photovoltaic panel.

[0025] Furthermore, the support bracket is fixedly connected to the inner wall of the buoy shell on both sides through the connection structure. This design enhances the structural stability of the entire floating photovoltaic module. It ensures that the photovoltaic panel can remain stable during installation and operation, reduces the shaking and tilting caused by factors such as water flow and wind, thereby improving power generation efficiency and safety. The electrical equipment compartment set in the connection structure provides effective protection for the inverter and wiring cables, prevents electrical equipment from being directly exposed to the water surface or harsh environment, and reduces equipment failure and damage caused by moisture, corrosion, etc. Placing the inverter and wiring cables together in the electrical equipment compartment facilitates maintenance and repair work.

[0026] Furthermore, the floating photovoltaic modules and the base are connected to the anchor foundation through mooring cables to form a stable overall structure. This connection method can effectively resist the shaking and tilting caused by external factors such as water flow and wind, thereby improving the stability of the entire floating photovoltaic system.

[0027] The present invention also provides a photovoltaic and tidal energy integrated offshore power generation method, which integrates floating photovoltaic modules with tidal energy power generation modules to achieve efficient integration of two renewable energy sources: solar energy and ocean tidal energy. This integration not only improves the utilization rate of resources, but also reduces the risk of a single energy power generation system and enhances the stability and reliability of the system. By adjusting the power generation telescopic mechanism and the steering shaft, the turbofan mechanism is driven to move in the vertical and circumferential directions to capture the water layer with the highest flow rate, thereby obtaining the maximum transmission power. The position and posture of the turbofan mechanism can be automatically adjusted according to the real-time marine environment and tidal energy conditions, thereby maximizing the power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of an integrated offshore power generation device in an embodiment of the present invention; Figure 2 A top view of an integrated offshore power generation device according to an embodiment of the present invention; Figure 3 A side view of an integrated offshore power generation device according to an embodiment of the present invention; Figure 4 is a side view of a floating photovoltaic assembly in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a tidal current energy power generation component in an embodiment of the present invention; In the figure: 1. Floating photovoltaic module; 2. Tidal energy power generation module; 3. Mooring rope; 4. Anchor foundation; 11. Buoy shell; 12. Support bracket; 13. Photovoltaic panel; 14. Connection structure; 15. Electrical equipment compartment; 21. Power generation telescopic mechanism; 22. Turbofan assembly; 23. Bracket; 24. Steering shaft; 25. Base; 26. Rotating motor; 27. Sealing groove; 211. Generator compartment; 212. Telescopic motor; 213. Telescopic shaft; 214. Telescopic screw; 215. Rotating lubrication layer. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide a photovoltaic and tidal energy integrated offshore power generation device and method to solve the technical problem in the prior art of how to effectively integrate photovoltaic and tidal energy while improving the power generation efficiency of the tidal energy power generation device.

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings: Example 1 See also Figure 1In one embodiment of the present invention, a photovoltaic and tidal energy integrated offshore power generation device is provided, comprising a floating photovoltaic assembly 1 and a tidal energy power generation assembly 2; a mounting position is provided at the bottom center of the floating photovoltaic assembly 1; the tidal energy power generation assembly 2 comprises a power generation telescopic mechanism 21, a turbofan mechanism, a steering shaft 24 and a base 25; the top end of the power generation telescopic mechanism 21 is arranged at the mounting position at the bottom of the floating photovoltaic assembly 1; the bottom end of the power generation telescopic mechanism 21 is connected to one end of the steering shaft 24, and the steering shaft 24 can be driven to move in a vertical direction by the power generation telescopic mechanism 21; the other end of the steering shaft 24 is connected to the base 25; the floating photovoltaic assembly 1 and the base 25 are circumferentially provided with a plurality of anchoring assemblies; the turbofan mechanism is arranged on the steering shaft 24, and the turbofan mechanism and the power generation telescopic mechanism 21 can be driven to move in a circumferential direction by the steering shaft 24, and the driving end of the turbofan mechanism is connected to the power generation telescopic mechanism 21.

[0032] Specifically, the power generation telescopic mechanism 21 includes a generator cabin 211, a motor cabin, a telescopic shaft 213 and a telescopic screw 214; the top of the generator cabin 211 is arranged at the installation position at the bottom of the floating photovoltaic module 1, and the bottom end of the generator cabin 211 is connected to the motor cabin; a telescopic motor 212 is arranged in the motor cabin; one end of the telescopic shaft 213 is connected to the telescopic motor 212 through the motor cabin, and the other end is sleeved on one end of the telescopic screw 214, and the other end of the telescopic screw 214 is rotatably connected to the steering shaft 24.

[0033] The outer surface of the generator compartment 211 is coated with a rotational lubrication layer 215 .

[0034] A sealing groove 27 is provided on the base 25 , and a rotating motor 26 is provided in the sealing groove 27 ; the bottom end of the steering shaft 24 is connected to the rotating motor 26 .

[0035] Among them, the turbofan mechanism includes a turbofan assembly 22 and a bracket 23; the turbofan assembly 22 includes a plurality of blades and a shaft body, the plurality of blades are circumferentially arranged on the shaft body, the driving end of the shaft body is fixed to the shaft body side wall of the steering shaft 24 through the bracket 23, and is connected to the generator compartment 211 through the telescopic shaft 213 and the telescopic screw 214.

[0036] Specifically, the power generation and retractable mechanism 21, the steering shaft 24 and the base 25 are all coaxially arranged.

[0037] The working principle of the power generation and retractable mechanism 21 in this embodiment is as follows: The power generation telescopic mechanism 21 is mainly composed of a generator compartment 211, a motor compartment, a telescopic shaft 213, a telescopic screw 214 and a telescopic motor 212. The generator compartment 211 is located at the installation position at the bottom of the floating photovoltaic module 1 and is connected to the motor compartment. A telescopic motor 212 is provided in the motor compartment to drive the telescopic movement of the telescopic shaft 213. One end of the telescopic shaft 213 is connected to the telescopic motor 212, and the other end is sleeved on one end of the telescopic screw 214 to form the core part of the telescopic mechanism. The other end of the telescopic screw 214 is rotatably connected to the steering shaft 24 to realize the vertical movement of the turbofan mechanism.

[0038] When the depth of the turbofan mechanism in the water needs to be adjusted, the telescopic motor 212 starts to work. The driving force generated by it is transmitted to the telescopic shaft 213. After receiving the driving force, the telescopic shaft 213 will perform telescopic movement along its axial direction. Since the other end of the telescopic shaft 213 is sleeved on the telescopic screw 214, the telescopic screw 214 will also perform telescopic movement accordingly. In this way, the turbofan mechanism can move up and down in the water as the telescopic screw 214 is extended and retracted, thereby achieving the purpose of adjusting the depth.

[0039] The working principle of the steering shaft 24 in this embodiment is as follows: The bottom end of the steering shaft 24 is connected to the rotating motor 26. When the rotating motor 26 is started, it generates a rotational driving force and transmits it to the steering shaft 24. After receiving the driving force, the steering shaft 24 rotates along its axial direction. Since the bracket 23 of the turbofan mechanism is fixed to the side wall of the shaft body of the steering shaft 24, the turbofan mechanism will also rotate with the rotation of the steering shaft 24, thereby adjusting the direction of the water flow.

[0040] Specifically, the floating photovoltaic assembly 1 includes a buoy shell 11; the overall structure of the buoy shell 11 is a disc-shaped structure; the installation position is set at the bottom center of the buoy shell 11; a supporting bracket 12 is provided in the buoy shell 11; and a plurality of photovoltaic panels 13 are laid on the supporting bracket 12.

[0041] The two ends of the supporting bracket 12 are fixedly connected to the two sides of the inner wall of the buoy shell 11 through a connecting structure 14 respectively; an electrical equipment compartment 15 is provided in the connecting structure 14 for placing the inverter and wiring cables.

[0042] When sunlight shines on the photovoltaic panel 13, the photovoltaic cells in the photovoltaic panel 13 absorb light energy and convert it into electrical energy. The photovoltaic effect is a phenomenon in which the interaction between photons and semiconductor materials in the photovoltaic cells generates electron-hole pairs, thereby generating electric current.

[0043] The buoy shell 11 provides sufficient buoyancy to enable the floating photovoltaic assembly 1 to stably float on the water surface. In this way, the photovoltaic assembly can utilize the vast water surface to generate solar energy without occupying land resources.

[0044] In this embodiment, the buoy shell 11 is made of high-strength composite material, which is light and transparent, and does not affect the photovoltaic module from receiving sunlight. The buoy shell 11 is equipped with a shell hatch, which can be opened for maintenance and replacement of photovoltaic modules; Specifically, the anchoring assembly includes a mooring cable 3 and an anchoring foundation 4; the floating photovoltaic assembly 1 and the base 25 are respectively connected to the anchoring foundation 4 through a plurality of mooring cables 3.

[0045] The floating photovoltaic assembly 1 and the base 25 are respectively connected to the anchor foundation 4 through a plurality of mooring cables 3. The mooring cables 3 are distributed at a certain angle and tension to ensure that the floating photovoltaic assembly 1 and the base 25 can remain stable under various environmental conditions.

[0046] In summary, the photovoltaic and tidal energy integrated offshore power generation device provided in this embodiment combines a floating photovoltaic module 1 and a tidal energy power generation module 2 to achieve the comprehensive utilization of solar energy and ocean tidal energy. This integrated design improves the utilization efficiency of the sea space, and at the same time can complement each other according to the characteristics of different energy sources to ensure the stability and continuity of power generation. The combination of the power generation telescopic mechanism 21, the steering shaft 24 and the turbofan mechanism enables the tidal energy power generation part to respond to changes in the tidal direction, ensuring that the turbofan always faces the strongest tidal current, thereby improving the power generation efficiency.

[0047] Example 2 This embodiment 2 provides a photovoltaic and tidal energy integrated offshore power generation method, based on the photovoltaic and tidal energy integrated offshore power generation device described above, including the following steps: First, a suitable area is selected at sea, and a plurality of mooring cables 3 and anchor foundations 4 are installed according to a preset layout. These mooring cables 3 and anchor foundations 4 will be used to fix the floating photovoltaic assembly 1 and the tidal energy power generation assembly 2.

[0048] Next, the floating photovoltaic modules 1 are connected to corresponding anchoring foundations 4 via a number of mooring cables 3 to ensure that they can stably float on the sea surface. These photovoltaic modules will generate electricity using solar energy.

[0049] At the same time, the turbofan mechanism, the power generation and retracting mechanism 21 and the steering shaft 24 are submerged in the sea and fixed to the anchor foundation 4 on the seabed by the mooring cables 3. These components will generate electricity using the kinetic energy generated by the water flow.

[0050] The floating photovoltaic module 1 receives sunlight on the sea level, and the photovoltaic cells convert the light energy into electrical energy, which can be converted into alternating current through an inverter and transmitted to the power grid.

[0051] The turbofan mechanism in the tidal energy power generation assembly 2 is driven to rotate by the water flow, thereby driving the generator to generate electricity. The rotation speed and power generation efficiency of the turbofan mechanism depend on the flow rate and direction of the water flow.

[0052] The system monitors the transmission power of the tidal energy power generation component 2 in real time. When it is detected that the transmission power decreases, it means that the flow velocity of the current water layer may be low, and the power generation efficiency of the turbofan mechanism is affected.

[0053] In order to improve the power generation efficiency, the system adjusts the power generation telescopic mechanism 21 to make the turbofan mechanism move in the vertical direction to find a water layer with a higher flow rate. At the same time, by adjusting the steering shaft 24, the turbofan mechanism moves in the circumferential direction to better align with the flow direction of the water.

[0054] Through the above adjustments, the turbofan mechanism can capture the water layer with the highest flow rate and generate electricity efficiently there. The system monitors the changes in the transmission power in real time and maintains the current working state when the maximum transmission power is reached.

[0055] In summary, the photovoltaic and tidal energy integrated offshore power generation method provided in this embodiment integrates the floating photovoltaic module 1 with the tidal energy power generation module 2, thereby realizing the efficient integration of two renewable energy sources, solar energy and ocean tidal energy. This integration not only improves the utilization rate of resources, but also reduces the risk of a single energy power generation system, and enhances the stability and reliability of the system. By adjusting the power generation telescopic mechanism 21 and the steering shaft 24, the turbofan mechanism is driven to move in the vertical and circumferential directions to capture the water layer with the highest flow rate, thereby obtaining the maximum transmission power. The position and posture of the turbofan mechanism can be automatically adjusted according to the real-time marine environment and tidal energy conditions, thereby maximizing the power generation efficiency.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A photovoltaic and tidal energy integrated offshore power generation device, characterized in that: It comprises a floating photovoltaic module (1) and a tidal current power generation module (2); The floating photovoltaic assembly (1) is provided with a mounting position at the center of the bottom; The tidal energy power generation assembly (2) comprises a power generation telescopic mechanism (21), a turbofan mechanism, a steering shaft (24) and a base (25); The top end of the power generation telescopic mechanism (21) is arranged at the installation position at the bottom of the floating photovoltaic assembly (1); The bottom end of the power generation and telescopic mechanism (21) is connected to one end of the steering shaft (24), and the power generation and telescopic mechanism (21) drives the steering shaft (24) to move in a vertical direction; the other end of the steering shaft (24) is connected to a base (25); a plurality of anchoring assemblies are provided in a circumferential direction on the floating photovoltaic assembly (1) and the base (25); The turbofan mechanism is arranged on the steering shaft (24), and the turbofan mechanism and the power generation and telescopic mechanism (21) are driven by the steering shaft (24) to move in a circumferential direction, and the driving end of the turbofan mechanism is connected to the power generation and telescopic mechanism (21).

2. A photovoltaic and tidal energy integrated offshore power generation device according to claim 1, characterized in that: The power generation telescopic mechanism (21) comprises a generator compartment (211), a motor compartment, a telescopic shaft (213) and a telescopic screw rod (214); The top end of the generator cabin (211) is arranged at the installation position at the bottom of the floating photovoltaic assembly (1), and the bottom end of the generator cabin (211) is connected to the motor cabin; a telescopic motor (212) is arranged in the motor cabin; One end of the telescopic shaft (213) is connected to the telescopic motor (212) through the motor cabin, and the other end is sleeved on one end of the telescopic screw rod (214); the other end of the telescopic screw rod (214) is rotatably connected to the steering shaft (24).

3. A photovoltaic and tidal energy integrated offshore power generation device according to claim 2, characterized in that: The outer surface of the generator cabin (211) is coated with a rotational lubrication layer (215).

4. A photovoltaic and tidal energy integrated offshore power generation device according to claim 2, characterized in that: The base (25) is provided with a sealing groove (27), and a rotating motor (26) is provided in the sealing groove (27); the bottom end of the steering shaft (24) is connected to the rotating motor (26).

5. A photovoltaic and tidal energy integrated offshore power generation device according to claim 2, characterized in that: The turbofan mechanism comprises a turbofan assembly (22) and a bracket (23); The turbofan assembly (22) comprises a plurality of blades and a shaft body, wherein the plurality of blades are circumferentially arranged on the shaft body, and the driving end of the shaft body is fixed to the shaft body side wall of the steering shaft (24) via a bracket (23), and is connected to the generator compartment (211) via a telescopic shaft (213) and a telescopic screw rod (214).

6. The photovoltaic and tidal energy integrated offshore power generation device according to claim 1, characterized in that: The power generation telescopic mechanism (21), the steering shaft (24) and the base (25) are all coaxially arranged.

7. The photovoltaic and tidal energy integrated offshore power generation device according to claim 1, characterized in that: The floating photovoltaic assembly (1) comprises a buoy shell (11); the overall structure of the buoy shell (11) is a disc-shaped structure; the mounting position is arranged at the bottom center of the buoy shell (11); a supporting bracket (12) is arranged inside the buoy shell (11); and a plurality of photovoltaic panels (13) are laid on the supporting bracket (12).

8. A photovoltaic and tidal energy integrated offshore power generation device according to claim 7, characterized in that: The two ends of the supporting bracket (12) are fixedly connected to the two sides of the inner wall of the buoy shell (11) via connecting structures (14); an electrical equipment compartment (15) is provided in the connecting structure (14) for accommodating an inverter and wiring cables.

9. The photovoltaic and tidal energy integrated offshore power generation device according to claim 1, characterized in that: The anchoring assembly comprises a mooring cable (3) and an anchoring foundation (4); The floating photovoltaic assembly (1) and the base (25) are respectively connected to an anchor foundation (4) via a plurality of mooring cables (3).

10. A photovoltaic and tidal energy integrated offshore power generation method, based on a photovoltaic and tidal energy integrated offshore power generation device according to any one of claims 1 to 9, characterized in that: The steps include: The floating photovoltaic assembly (1) and the tidal energy power generation assembly (2) are respectively fixed in a circular manner on the sea via a plurality of anchoring assemblies; The floating photovoltaic module (1) floats on the sea surface to generate electricity through photovoltaics, and the tidal energy generation module (2) is submerged in the sea to drive the turbofan mechanism through the water layer flow velocity to obtain transmission power; When a decrease in power transmission is detected, the power generation telescopic mechanism (21) is adjusted to drive the turbofan mechanism to move in a vertical direction, and the steering shaft (24) is adjusted to drive the turbofan mechanism to move in a circumferential direction, thereby capturing the water layer with the highest flow rate and obtaining the maximum power transmission.

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