Offshore photovoltaic system capable of independently adjusting angle

Abstract

The invention discloses an offshore photovoltaic system capable of independently adjusting an angle. The offshore photovoltaic system comprises a floating platform composed of a plurality of floating bodies and photovoltaic supports connected with the adjacent floating bodies. The photovoltaic support is of a triangular truss structure, a hollow cavity filled with liquid is formed in the photovoltaic support, and a photovoltaic assembly is installed on the surface of one side of the support. The tops of the top regulator and the bottom regulator are connected with the photovoltaic module, and the bottoms of the top regulator and the bottom regulator are communicated with the hollow cavity of the support. A two-way regulating valve is arranged in a controller arranged at the bottom of the support and combined with an irradiation sensor on the side of the support to form a closed-loop control system, and the controller drives the two-way regulating valve to dynamically distribute the flow of liquid between a top regulator and a bottom regulator according to illumination direction data collected by the irradiation sensor. Independent and accurate adjustment of the inclination angle of the photovoltaic module is achieved through hydraulic transmission, and the power generation efficiency and environmental adaptability of an offshore photovoltaic system are remarkably improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of offshore photovoltaic power generation, and relates to an offshore photovoltaic system capable of independently adjusting angles. BACKGROUND

[0002] As a new renewable energy utilization method in recent years, the floating photovoltaic power generation technology installs photovoltaic modules on a floating platform on the water surface, solves the problem of land resource shortage, and improves the power generation efficiency by utilizing the cooling effect of water on the photovoltaic panels.

[0003] However, the existing offshore photovoltaic system still has many technical problems in realizing automatic adjustment of photovoltaic modules. First, the water surface environment has dynamic characteristics, and natural factors such as waves and water flow will cause the floating platform to displace and sway, which brings great challenges to the precise angle adjustment of photovoltaic modules. Secondly, the traditional fixed photovoltaic support cannot adjust the angle in real time according to the change of the sun position, resulting in low utilization rate of light energy. In addition, the existing angle adjustment mechanism often adopts a mechanical transmission mode, which is prone to failure in the seawater corrosion environment, and the maintenance cost is high. More importantly, the existing technology cannot realize independent and accurate control of the inclination angle of photovoltaic modules, especially when multiple photovoltaic modules work cooperatively, it is impossible to perform differentiated adjustment according to the differences in the micro-environment of each module. These problems seriously restrict the power generation efficiency and reliability of the offshore photovoltaic system. SUMMARY

[0004] The purpose of the present application is to solve the technical problem that photovoltaic modules are difficult to automatically adjust angles in the prior art, and to provide an offshore photovoltaic system capable of independently adjusting angles.

[0005] To achieve the above purpose, the following technical solutions are adopted: The present application provides an offshore photovoltaic system capable of independently adjusting angles, comprising a floating platform and a photovoltaic support. The floating platform comprises a plurality of floating bodies, and adjacent floating bodies are connected by photovoltaic supports. The photovoltaic support is provided on the floating platform, and the photovoltaic support is a triangular truss structure. A hollow cavity is provided in the photovoltaic support, and the hollow cavity is filled with liquid. A photovoltaic module is provided on one side surface of the photovoltaic support. A top adjuster is provided on the top of the photovoltaic support, and a bottom adjuster is provided on the side bottom of the photovoltaic support. The top of the top adjuster and the top of the bottom adjuster are connected to the photovoltaic module. The bottom of the top adjuster and the bottom of the bottom adjuster are in communication with the hollow cavity of the photovoltaic support. The bottom of the photovoltaic support is provided with a controller, the inside of the controller is provided with a bidirectional regulating valve, the side of the photovoltaic support connected with the photovoltaic module is provided with an irradiation sensor; the controller is electrically connected with the irradiation sensor; the controller controls the bidirectional regulating valve to adjust the flow distribution of the liquid between the top regulator and the bottom regulator according to the irradiation data of the irradiation sensor, so as to control the inclination angle adjustment of the photovoltaic module.

[0006] Further, the top regulator and the bottom regulator are both hollow structures, the bottom of the top regulator and the bottom of the bottom regulator are both sealingly connected with the photovoltaic support.

[0007] Further, the inside of the top regulator and the bottom regulator is both provided with an adjusting push rod, the adjusting push rod changes the inclination angle of the photovoltaic module through push-pull movement.

[0008] Further, the adjusting push rod is hinged with the photovoltaic module through a supporting hinge.

[0009] Further, the total amount of the liquid is fixed, and the liquid circulates between the hollow cavity of the photovoltaic support, the top regulator and the bottom regulator.

[0010] Further, the bidirectional regulating valve comprises a left regulating valve and a right regulating valve; the left regulating valve is connected with the top regulator, and the right regulating valve is connected with the bottom regulator.

[0011] Further, the bidirectional regulating valve drives the directional flow of the liquid by adjusting the opening degree of the valve body, so that the top regulator and the bottom regulator move reversely.

[0012] Further, the irradiation data is the maximum light direction information.

[0013] Further, each controller controls the inclination angle adjustment of two photovoltaic modules.

[0014] Further, the application further comprises a mooring cable and a gravity anchor; one end of the mooring cable is connected with the gravity anchor, and the other end is connected with the floating body; adjacent floating bodies are connected with the same gravity anchor.

[0015] Compared with the prior art, the application has the following beneficial effects: The application discloses an offshore photovoltaic system with independently adjustable angles, which is connected with a floating body through a photovoltaic support of a triangular truss structure to form a stable floating platform, and a hydraulic liquid filled in a hollow cavity circulates in a closed loop system. The dynamic adjustment of the inclination angle of the photovoltaic assembly is realized through the cooperative operation of the top adjuster and the bottom adjuster: when the irradiation sensor detects the change of the maximum sunlight direction, the controller drives the bidirectional adjusting valve to accurately distribute the liquid flow, so that the top adjuster push rod and the bottom adjuster push rod move reversely, and the photovoltaic assembly is driven by the support hinge to track the optimal light receiving angle in real time. The power generation efficiency is significantly improved, the triangular truss has the functions of structural strength and preset initial inclination angle, and cooperates with the shared gravity anchoring mooring system to effectively resist the impact of waves. The hydraulic closed loop adjusting mechanism has the seawater corrosion resistance, the design that a single controller synchronously controls two photovoltaic assemblies reduces the operation and maintenance cost, and the overall system realizes the high-precision adaptive angle adjustment in complex sea conditions, and the energy output stability is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is a structural diagram of the floating photovoltaic platform. Figure 2 It is a top view of the floating photovoltaic platform. Figure 3 It is a side view of the floating photovoltaic platform. Figure 4 It is an enlarged view of the photovoltaic support. Figure 5 It is a side view of the photovoltaic support.

[0018] In the drawings: 1-floater; 2-photovoltaic assembly; 3-photovoltaic support; 4-mooring cable; 5-gravity anchoring; 6-controller; 7-top adjuster; 8-adjusting push rod; 9-bottom adjuster; 10-support hinge; 11-bidirectional adjusting valve; 12-irradiation sensor. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and indicated in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the application without making creative efforts fall within the scope of the application claimed.

[0021] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the embodiments of the application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are merely for the convenience of describing the application and simplifying the description, and therefore, cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, cannot be understood as limiting the application. In addition, the terms "first", "second", and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the embodiments of the application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "arrange", "mount", "connect", "connect" appear, they should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0025] The application will be further described in detail below in conjunction with the drawings: Reference Figures 1-5The application discloses an offshore photovoltaic system with independently adjustable angles, comprising a floating platform and a photovoltaic support 3. The floating platform is composed of a plurality of floating bodies 1, and adjacent floating bodies 1 are connected through photovoltaic supports 3. The photovoltaic support 3 adopts a triangular truss structure, and a hollow cavity is arranged in the interior and filled with liquid. A photovoltaic module 2 is mounted on one side surface of the photovoltaic support 3, a top adjuster 7 is arranged at the top, and a bottom adjuster 9 is arranged at the bottom, and the top adjuster 7 and the bottom adjuster 9 are both in communication with the hollow cavity of the photovoltaic support 3. A controller 6 is mounted at the bottom of the photovoltaic support 3, the controller 6 is internally provided with a bidirectional adjusting valve 11 and is electrically connected with an irradiation sensor 12. According to irradiation data collected by the irradiation sensor 12, the controller 6 controls the flow distribution of the liquid between the top adjuster 7 and the bottom adjuster 9 through the bidirectional adjusting valve 11, and then adjusts the inclination angle of the photovoltaic module 2.

[0026] The triangular truss structure refers to a stable support frame composed of three sides, which can be formed by welding metal pipes, and the geometric characteristics can enhance the bending resistance of the support. The hollow cavity refers to a closed space penetrating through the interior of the support, which can be designed in a segmented chamber for accommodating the circulating liquid medium. The top adjuster 7 refers to a pressure container located at the top of the photovoltaic support 3, which generates displacement to push the photovoltaic module 2 by changing the liquid injection amount. The bottom adjuster 9 refers to a pressure container located at the bottom of the side where the photovoltaic support 3 and the photovoltaic module 2 are connected, which has a symmetrical structure with the top adjuster 7. The bidirectional adjusting valve 11 refers to a valve with a bidirectional flow control function, which can be an electromagnetic proportional valve, and realizes directional distribution of the liquid by adjusting the opening ratio. The irradiation sensor 12 refers to a device for detecting the angle of solar radiation, which can be a multi-quadrant photoelectric detector arranged on one side of the photovoltaic module 2 to monitor the maximum light direction information in real time.

[0027] Specifically, when the irradiation sensor 12 detects the change of the sun position, the maximum light direction information is transmitted to the controller 6. After the controller 6 calculates the target inclination angle, the bidirectional adjusting valve 11 is controlled to adjust the flow direction of the liquid. For example, at noon, the controller 6 can increase the liquid inflow amount of the top adjuster 7 to make the adjusting push rod 8 elongate and push the photovoltaic module 2 upward, and in the morning and evening, the liquid amount of the bottom adjuster 9 is increased to make the module downward. The liquid circulates in the closed system, and the total amount remains constant. The adjusting push rod 8 is connected to the photovoltaic module 2 through a hinge mechanism, and the change of the liquid pressure is converted into linear displacement to realize accurate adjustment of the angle. Each photovoltaic module 2 is equipped with an independent controller 6, which can be adjusted differently according to the local light conditions.

[0028] Compared with the prior art, the liquid drive is adopted instead of the traditional gear and rack mechanism, mechanical wear and corrosion risk of seawater are eliminated; the triangular truss structure has higher structural stability than the single rod support; the independent adjustment system allows each photovoltaic component 2 to adjust autonomously according to the microenvironment, avoiding energy loss caused by overall adjustment; the closed-loop control system improves the angle adjustment accuracy compared with the timing control mode through real-time feedback of irradiation data.

[0029] Through the above technical solutions, the present application realizes independent and accurate adjustment of the tilt angle of the photovoltaic component 2, effectively adapts to the platform sway caused by waves; the liquid drive system reduces the maintenance requirement of moving parts; the distributed control architecture improves the energy collection efficiency of a large-area photovoltaic array; and the sealed liquid circulation system enhances the corrosion resistance in the offshore environment.

[0030] The present application further proposes that the top adjuster 7 and the bottom adjuster 9 are both hollow structures, and the bottom of the top adjuster 7 and the bottom of the bottom adjuster 9 are both sealingly connected with the photovoltaic support 3.

[0031] The hollow structure refers to a geometric structure with a cavity inside, which can be formed by processing metal pipes or composite material pipes, and a liquid flow channel is formed through the internal cavity. The sealing connection refers to a leak-free joint between two components, which can be achieved by flange and sealing washer or welding process, and the sealing structure prevents liquid from leaking out of the connection.

[0032] Specifically, the hollow structure design of the top adjuster 7 and the bottom adjuster 9 forms a liquid storage and transmission space inside, and the liquid circulates through the sealing connection between the hollow cavity of the photovoltaic support 3 and the adjuster. The sealing connection method can ensure that the liquid does not leak due to wave impact or component deformation in the dynamic marine environment, while maintaining the structural stability between the adjuster and the photovoltaic support 3. When the controller 6 drives the liquid to flow between the adjusters, the pressure resistance of the sealing connection can adapt to the change of liquid pressure, avoiding connection failure caused by pressure fluctuation.

[0033] The present application further proposes that the inside of the top adjuster 7 and the bottom adjuster 9 is provided with an adjusting push rod 8, which changes the tilt angle of the photovoltaic component 2 through push-pull movement.

[0034] The adjusting push rod 8 refers to a telescopic drive component installed inside the adjuster, which generates push-pull force through linear displacement. This component directly acts on the connection point of the photovoltaic component 2, converting liquid pressure or electrical energy into mechanical movement. The push-pull movement refers to the telescopic action of the adjusting push rod 8 along the axial direction, which can be achieved by controlling the liquid flow to realize bidirectional movement. This action changes the position of the fulcrum of the photovoltaic component 2, driving it to rotate around the hinge shaft.

[0035] Specifically, when the controller 6 drives the liquid to flow between the adjusters according to the irradiation data, the adjusting push rod 8 generates extension and retraction displacement under the action of liquid pressure. For example, the extension of the push rod of the top adjuster 7 pushes the upper end of the photovoltaic module 2 forward, while the retraction of the push rod of the bottom adjuster 9 pulls the lower end of the photovoltaic module 2 backward, both of which cooperatively form a rotation torque around the support hinge 10, thereby changing the angle between the plane of the photovoltaic module 2 and the sunlight. The movement process only relies on the linear motion of the push rod, without the need for rotary transmission components.

[0036] The application further proposes that the adjusting push rod 8 is hinged to the photovoltaic module 2 through the support hinge 10.

[0037] Among them, the adjusting push rod 8 refers to a driving component that generates linear push-pull motion through hydraulic pressure, which functions to convert the pressure generated by the liquid flow into mechanical displacement to drive the photovoltaic module 2 to rotate. Among them, the support hinge 10 refers to a connecting mechanism with a rotational degree of freedom, which can specifically be implemented by a metal hinge or a universal bearing with a corrosion-resistant coating, which functions to form a rotatable connection point between the adjusting push rod 8 and the photovoltaic module 2, allowing the photovoltaic module 2 to rotate around the hinge axis when the push rod moves.

[0038] Specifically, when the liquid is distributed into the inside of the adjusting push rod 8 through the controller 6, the push rod performs extension and retraction motion according to the change of liquid pressure. The support hinge 10 converts the linear motion of the push rod into the rotational motion of the photovoltaic module 2, for example, the push rod extension pushes the photovoltaic module 2 to tilt upward through the hinge, and the push rod retraction drives the module to tilt downward. This structure avoids stress concentration caused by rigid connection through the rotation characteristics of the hinge, and reduces the sliding friction between mechanical components, thereby adapting to the high-humidity and high-salt-fog corrosion environment at sea.

[0039] The application further proposes that the total amount of liquid is fixed, circulating and flowing between the hollow cavity of the photovoltaic support 3, the top adjuster 7 and the bottom adjuster 9.

[0040] Among them, the total amount of liquid being fixed means that the total volume of the liquid in the system remains constant, which can be specifically implemented by a closed circulation loop design to avoid system imbalance caused by liquid leakage or external supplement. Circulating and flowing refers to the formation of a closed flow path between the hollow cavity, the top adjuster 7 and the bottom adjuster 9, which can specifically control the liquid flow direction and flow distribution through the bidirectional adjusting valve 11 to realize the directional transfer of the liquid in a fixed volume.

[0041] Specifically, the liquid flows in the closed loop formed by the hollow cavity of the photovoltaic support 3, the top adjuster 7 and the bottom adjuster 9. When the controller 6 drives the two-way adjuster valve 11 according to the irradiation data, the liquid is distributed to the top adjuster 7 or the bottom adjuster 9 in a directional manner, and the adjustment push rod 8 is driven to move by changing the volume ratio of the liquid on both sides, so as to adjust the inclination angle of the photovoltaic module 2. Since the total amount of liquid is fixed, the system can complete the cycle adjustment without external supplement of liquid, and the buoyancy fluctuation caused by the increase or decrease of liquid is avoided.

[0042] The application further proposes that the two-way adjuster valve 11 comprises a left adjuster valve and a right adjuster valve, the left adjuster valve is connected to the top adjuster 7, and the right adjuster valve is connected to the bottom adjuster 9.

[0043] The left adjuster valve refers to an actuator arranged in the liquid circulation pipeline for controlling the liquid flow of the top adjuster 7, which can be realized by an electromagnetic proportional valve or an electric ball valve, and the liquid flow entering the top adjuster 7 is controlled by changing the opening degree of the valve body. The right adjuster valve refers to an actuator arranged in the liquid circulation pipeline for controlling the liquid flow of the bottom adjuster 9, and the differential distribution of the liquid flow is realized by independently controlling the opening degrees of the two adjuster valves.

[0044] Specifically, when the irradiation sensor 12 detects the change of the solar azimuth, the controller 6 calculates the target opening degree values of the left adjuster valve and the right adjuster valve according to a preset algorithm. The left adjuster valve changes the liquid flow rate flowing to the top adjuster 7 by adjusting the position of the valve core, and the right adjuster valve synchronously adjusts the liquid flow rate flowing to the bottom adjuster 9. Since the liquid pressure difference between the top adjuster 7 and the bottom adjuster 9 forms a reverse force, the adjustment push rod 8 is driven to produce a displacement difference, and then the photovoltaic module 2 is rotated around the support hinge 10. In this process, the liquid flow distribution ratio between the top and the bottom is decoupled and controlled by the two independent adjuster valves, avoiding the flow coupling interference caused by single valve adjustment.

[0045] The application further proposes that the two-way adjuster valve 11 drives the directional flow of the liquid by adjusting the opening degree of the valve body, so that the top adjuster 7 and the bottom adjuster 9 move in opposite directions.

[0046] The bidirectional regulating valve 11 is a valve capable of controlling the flow of liquid in two opposite directions, and the flow channel is switched by changing the position of the valve core to adjust the distribution ratio of the liquid between the top regulator 7 and the bottom regulator 9. The valve opening degree refers to the opening degree of the internal passage of the valve, and the opening degree change directly affects the liquid flow rate and flow. The liquid directional flow refers to the circulation of the liquid along a specific path between the hollow cavity of the photovoltaic support 3 and the regulator, and the liquid flow is driven by the pressure difference on both sides of the regulating valve, so that the liquid transfers from the high-pressure area to the low-pressure area. The reverse motion refers to the opposite displacement of the top regulator 7 and the bottom regulator 9 driven by the liquid flow, which is manifested as the extension of the top regulator 7 and the contraction of the bottom regulator 9, or the contraction of the top regulator 7 and the extension of the bottom regulator 9, thereby driving the photovoltaic module 2 to rotate around the hinge point.

[0047] Specifically, when the irradiation sensor 12 detects the change of the sun position, the controller 6 controls the valve opening degree of the bidirectional regulating valve 11 according to the maximum light direction information. The change of the valve opening degree causes the liquid to be redistributed between the top regulator 7 and the bottom regulator 9, for example, increasing the liquid flow to the top regulator 7, the internal pressure of the top regulator 7 rises and pushes the regulating push rod 8 to extend, while the bottom regulator 9 is lowered due to the outflow of the liquid and drives the regulating push rod 8 to contract. The reverse motion of the top regulator 7 and the bottom regulator 9 is transmitted to the photovoltaic module 2 through the support hinge 10, so that the photovoltaic module 2 rotates around the hinge point, and finally the inclination angle is adjusted. The total amount of liquid remains constant, and only circulates between the cavity and the regulator, avoiding the imbalance of the system caused by the increase or decrease of the liquid.

[0048] The present application further provides that the irradiation data is the maximum light direction information.

[0049] The irradiation data refers to the light intensity distribution information collected by the sensor, which can be realized by using a photoelectric sensor array or a photosensitive element matrix, and is used for real-time monitoring of the difference in light intensity in different directions. The maximum light direction information refers to the incident angle data with the highest solar radiation intensity determined by data processing, which can be realized by using a multi-sensor data fusion algorithm or a peak detection algorithm, and is used for identifying the spatial orientation of the current sun position relative to the photovoltaic module 2.

[0050] Specifically, the irradiation sensor 12 obtains the light intensity distribution in different directions through multi-point detection, and the data processing module selects the direction with the maximum radiation intensity as the reference angle. The controller 6 calculates the target inclination angle of the photovoltaic module 2 according to the direction information, and drives the regulator to move by adjusting the liquid flow, so that the normal line of the surface of the photovoltaic module 2 is perpendicular to the maximum light direction. In the dynamic sea surface environment, this scheme can track the change of the sun position in real time, and avoid the angle detection error caused by the platform sway.

[0051] Compared with the prior art, the conventional scheme usually only adopts single light intensity data as the basis for adjustment, cannot accurately distinguish the light difference of different incident directions, and is easily disturbed by water surface reflection or scattered light. The scheme can effectively exclude the influence of environmental stray light and accurately lock the direct sunlight direction, thereby improving the accuracy and anti-interference ability of angle adjustment.

[0052] Through the above technical scheme, the present application solves the adjustment deviation problem caused by inaccurate light direction recognition in the prior art, so that the photovoltaic module 2 always receives solar radiation at the best angle, and improves the light energy conversion efficiency. At the same time, the dynamic adjustment mechanism based on direction information can adapt to the light changes under different weather conditions, and enhances the operation reliability of the system in complex marine environment.

[0053] The present application further proposes a marine photovoltaic system with independently adjustable angles, which further comprises a mooring cable 4 and a gravity anchor 5; one end of the mooring cable 4 is connected to the gravity anchor 5, and the other end is connected to the floating body 1; adjacent floating bodies 1 are connected to the same gravity anchor 5.

[0054] The mooring cable 4 is a structural component for fixing the position of the floating platform, which can be implemented by high-strength polyethylene cable or corrosion-resistant steel cable, and its function is to connect the floating body 1 and the gravity anchor 5 to form a stable anchoring system. The gravity anchor 5 is an underwater foundation structure that provides a fixed pulling force, which can be implemented by a concrete block or a caisson type counterweight structure, and its function is to offset the displacement of the floating platform caused by waves and currents through its own weight. The adjacent floating bodies 1 connected to the same gravity anchor 5 means that multiple floating bodies 1 share an anchor point, which can be achieved by a bifurcated cable or a connector, and its function is to reduce the number of anchor points and enhance the overall stability of the platform.

[0055] Specifically, one end of the mooring cable 4 is fixed to the connecting ring on the side surface of the floating body 1, and the other end extends to the seabed and is connected to the lifting lug of the gravity anchor 5. When two adjacent floating bodies 1 need to share an anchor point, the mooring cable 4 is provided with a bifurcated structure near the gravity anchor 5 end to form a Y-shaped connection topology. Under the action of waves, the horizontal displacement of the floating body 1 is transmitted to the gravity anchor 5 through the mooring cable 4, and the reverse pulling force generated by the anchor weight limits the platform drift range. This structure makes the movement of adjacent floating bodies 1 mutually restricted, avoiding the deformation of the photovoltaic support 3 caused by the excessive deviation of a single floating body 1.

[0056] In some embodiments, the weight of the gravity anchor 5 can range from 10 to 50 tons, depending on the water depth and wave intensity. The length of the mooring cable 4 can be set to 1.2 to 1.5 times the water depth, for example, a 24-meter cable in a 20-meter water depth, leaving sufficient margin to accommodate tidal fluctuations. The spacing between adjacent buoys 1 can be controlled to 5 to 8 meters, creating a stable triangular layout through shared anchoring.

[0057] Compared with existing technologies, traditional independent anchoring solutions require a separate anchor point for each buoy 1, resulting in an excessive density of subsea infrastructure. This solution, through a shared anchor point design, reduces the number of anchor points by approximately 50% while maintaining the overall stability of the platform, significantly reducing material costs and construction difficulty. Measured data shows that the platform's lateral displacement can be controlled within the design allowable range under Class 3 sea conditions.

[0058] Through the above technical solution, the present invention effectively solves the problem of excessive mooring complexity in offshore photovoltaic systems, simplifying the anchoring system structure while maintaining platform stability. This design reduces the impact of the anchoring foundation on the seabed ecosystem and reduces the risk of cable entanglement, providing a viable mooring solution for the deployment of large-scale offshore photovoltaic arrays.

[0059] The present invention further proposes a mooring cable 4 and a gravity anchor 5 ; one end of the mooring cable 4 is connected to the gravity anchor 5 , and the other end is connected to the floating body 1 ; adjacent floating bodies 1 are connected to the same gravity anchor 5 .

[0060] Mooring cables 4 are flexible connectors used to connect the floating platform to a fixed point on the seabed. Specifically, they can be made of highly corrosion-resistant synthetic fiber cables or steel cables coated with an anti-corrosion layer. Their function is to limit the horizontal displacement of the floating platform under the influence of wind and waves. Gravity anchors 5 are seabed anchors that rely on their own weight to provide anchoring force. Specifically, they can be made of concrete blocks or metal counterweight structures. Their function is to resist the tension transmitted by mooring cables 4 through the friction between gravity and the seabed foundation.

[0061] Specifically, one end of the mooring cable 4 is connected to the floating platform's buoyancy 1, and the other end is connected to a gravity anchor 5. Two adjacent buoys 1 are moored at multiple points using the same gravity anchor 5. When the floating platform is displaced by waves or currents, the mooring cable 4 transmits tension to the gravity anchor 5, where the friction between the anchor weight and the seabed foundation counteracts the external force. The shared anchor point between adjacent buoys 1 creates a synergistic constraint, reducing load fluctuations at individual anchor points.

[0062] Compared with the prior art, the traditional offshore photovoltaic system usually adopts an independent anchoring mode, each floating body 1 is independently configured with an anchoring device, a large number of anchoring points are distributed discretely, installation cost is increased, and a chain reaction is easily caused by local anchoring failure. The scheme shares the anchoring points through the multiple floating bodies 1, the number of anchoring devices is reduced while the stability of the system is ensured, and the overall anti-deviation capability is improved through the cooperative constraint between adjacent floating bodies 1.

[0063] Through the technical scheme, the displacement problem of the offshore floating platform caused by the dynamic water environment is effectively solved, the overall stability of the system is enhanced through the optimization of the anchoring layout, the construction and maintenance cost of the anchoring system is reduced, and reliable foundation support is provided for the angle adjustment function of the photovoltaic component 2.

[0064] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An offshore photovoltaic system with independently adjustable angle, characterized in that: Including floating platform and photovoltaic support (3); The floating platform comprises a plurality of floating bodies (1); adjacent floating bodies (1) are connected via photovoltaic brackets (3); The photovoltaic support (3) is arranged on the floating platform, and the photovoltaic support (3) is a triangular truss structure; a hollow cavity is arranged inside the photovoltaic support (3), and the hollow cavity is filled with liquid; A photovoltaic assembly (2) is provided on one side surface of the photovoltaic support (3); a top regulator (7) is provided on the top of the photovoltaic support (3), and a bottom regulator (9) is provided on the bottom of the side on which the photovoltaic assembly (2) is provided; the top of the top regulator (7) and the top of the bottom regulator (9) are both connected to the photovoltaic assembly (2); the bottom of the top regulator (7) and the bottom of the bottom regulator (9) are both in communication with the hollow cavity of the photovoltaic support (3); A controller (6) is provided at the bottom of the photovoltaic bracket (3), a two-way regulating valve (11) is provided inside the controller (6), and an irradiation sensor (12) is provided on the side of the photovoltaic bracket (3) connected to the photovoltaic assembly (2); the controller (6) is electrically connected to the irradiation sensor (12); the controller (6) controls the two-way regulating valve (11) to adjust the flow distribution of the liquid between the top regulator (7) and the bottom regulator (9) according to the irradiation data of the irradiation sensor (12), thereby controlling the tilt angle adjustment of the photovoltaic assembly (2).

2. The independently angle-adjustable offshore photovoltaic system according to claim 1, characterized in that: The top regulator (7) and the bottom regulator (9) are both hollow structures, and the bottom of the top regulator (7) and the bottom of the bottom regulator (9) are both sealed and connected to the photovoltaic support (3).

3. The independently angle-adjustable offshore photovoltaic system according to claim 2, characterized in that: An adjusting push rod (8) is provided inside each of the top adjuster (7) and the bottom adjuster (9), and the adjusting push rod (8) changes the tilt angle of the photovoltaic assembly (2) through a push-pull motion.

4. The independently angle-adjustable offshore photovoltaic system according to claim 3, characterized in that: The adjusting push rod (8) is hinged to the photovoltaic assembly (2) via a supporting hinge (10).

5. The independently angle-adjustable offshore photovoltaic system according to claim 1, characterized in that: The total amount of the liquid is fixed and circulates between the hollow cavity of the photovoltaic support (3), the top regulator (7) and the bottom regulator (9).

6. The independently angle-adjustable offshore photovoltaic system according to claim 5, characterized in that: The two-way regulating valve (11) comprises a left regulating valve and a right regulating valve; the left regulating valve is connected to the top regulator (7), and the right regulating valve is connected to the bottom regulator (9).

7. The independently angle-adjustable offshore photovoltaic system according to claim 1, characterized in that: The two-way regulating valve (11) drives the liquid to flow in a directional manner by adjusting the valve body opening, causing the top regulator (7) and the bottom regulator (9) to move in opposite directions.

8. The independently angle-adjustable offshore photovoltaic system according to claim 1, characterized in that: The irradiance data is information about the maximum illumination direction.

9. The independently angle-adjustable offshore photovoltaic system according to claim 1, characterized in that: Each controller (6) controls the tilt angle adjustment of two photovoltaic components (2).

10. The independently angle-adjustable offshore photovoltaic system according to claim 1, characterized in that: It also includes a mooring cable (4) and a gravity anchor (5); one end of the mooring cable (4) is connected to the gravity anchor (5), and the other end is connected to the floating body (1); adjacent floating bodies (1) are connected to the same gravity anchor (5).

Images