Marine floating device and marine photovoltaic system

Abstract

The present disclosure relates to a marine floating device and a marine photovoltaic system. The floating device comprises a floating part and a fixing part. The floating part comprises a first floating body comprising a first floating ring and a first pull net connected to the inner ring of the first floating ring, the first pull net being used for arranging electrical components; a second floating body used for installing photovoltaic panels; and a support part comprising a plurality of support rods supported between the first floating body and the second floating body. The fixing part comprises a plurality of anchoring piles used for fixing to the seabed; and a plurality of ropes connected between the anchoring piles and the first floating body. The floating part is arranged such that the first pull net is above the sea surface when the floating device is floating by itself and carrying the photovoltaic panels. Arranging the electrical components in the first pull net can lower the center of gravity of the floating device, and the plurality of support rods arranged at intervals can also reduce the stress area when the device is hit by waves, thereby effectively improving the stability of the device. The first pull net being above the sea surface can avoid safety hazards caused by the electrical components being soaked in water for a long time.

Description

Technical Field

[0001] This disclosure relates to the field of photovoltaic power generation, and more specifically, to a floating device and a marine photovoltaic system. Background Technology

[0002] Offshore photovoltaic (PV) power generation is a technology that uses photovoltaic panels to float on the sea to absorb solar energy and generate electricity. Currently, there are two main types of floating devices used to install PV panels: floating devices for flexible PV panels and floating devices for rigid PV panels.

[0003] The characteristic of floating devices for flexible photovoltaic panels is that the photovoltaic panels are close to the water surface. The cooling effect of the water can improve the power generation efficiency of the photovoltaic panels. However, because the floating devices for flexible photovoltaic panels are close to the water surface, the materials themselves are soft and prone to fatigue failure under the long-term action of waves. Furthermore, they are prone to significant deformation under strong winds and waves, leading to damage to the flexible photovoltaic cells. The characteristic of floating devices for rigid photovoltaic panels is that the photovoltaic panels are mounted on box-shaped floats, and the box-shaped floats are interconnected to form a photovoltaic array. Although this type of floating photovoltaic device solves the shortcomings of the floating devices for flexible photovoltaic panels, it is also prone to damage or capsizing by wind and waves under long-term impact from waves. To solve the problem of rigid photovoltaic panel floating devices being easily capsized by wind and waves, related technologies usually fill the floats of the rigid photovoltaic panel floating devices with water or add weight blocks to improve the stability of the device, but this indirectly increases the weight of the overall device. Summary of the Invention

[0004] The purpose of this disclosure is to provide a marine floating device and a marine photovoltaic system to at least partially solve the problems existing in the related art.

[0005] To achieve the above objectives, this disclosure provides a marine floating device for supporting photovoltaic panels. The floating device includes a floating section and a fixing section. The floating section includes a first floating body for floating on the sea surface and includes a first floating ring and a first net connected to the inner ring of the first floating ring, the first net being used to arrange electrical components; a second floating body for mounting the photovoltaic panels and positioned above the first floating body; and a support section including a plurality of support rods supported between the first floating body and the second floating body. The fixing section includes a plurality of anchor piles for fixing to the seabed; and a plurality of ropes connecting the respective anchor piles and the first floating body. The floating section is configured such that when it is self-floating and floating while supporting the photovoltaic panels, the first net is positioned above the sea surface.

[0006] Optionally, the second floating body includes a second floating ring and a second mesh connected to the inner ring of the second floating ring, wherein the side of the second mesh opposite to the support rod is used to install the photovoltaic panel.

[0007] Optionally, the first floating ring and the second floating ring are the same, and the first net and the second net are the same.

[0008] Optionally, a plurality of the support rods are circumferentially equidistant between the first floating ring and the second floating ring.

[0009] Optionally, the first and second floating rings are made of steel, and the plurality of support rods are welded to the first and second floating rings respectively.

[0010] Optionally, the first and second floating rings are hollow.

[0011] Optionally, the first and second nets are composed of multiple steel cables, wherein the first and second floating rings are respectively provided with adjusting members for adjusting the tension of the steel cables.

[0012] Optionally, multiple of the support rods are configured to be length-adjustable.

[0013] Optionally, it also includes a buffer device disposed on the rope, the buffer device being configured to deform when the tension on the rope reaches a preset value to prevent the tension from increasing.

[0014] According to a second aspect of this disclosure, a marine photovoltaic system is provided, comprising a photovoltaic panel and the aforementioned marine floating device, wherein the photovoltaic panel is mounted on a second floating body.

[0015] Through the above technical solution, the electrical components are arranged on the first net. Since the first net is located under the entire floating part, the center of gravity of the floating device can be effectively lowered, making it more stable without the need for additional weight blocks that would increase the overall weight of the floating device. The spaced arrangement of multiple support rods 310 also reduces the force-bearing area when waves hit the floating device, further improving the stability of the device. In addition, since the first net 120 is located above the sea surface when floating, it can prevent the electrical components from being submerged in seawater for extended periods, thus avoiding potential safety hazards.

[0016] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a frontal sectional view of a marine floating device exemplarily illustrated according to this disclosure;

[0019] Figure 2 yes Figure 1 A top view of a floating device at sea.

[0020] Explanation of reference numerals in the attached figures

[0021] 100-First floating body; 110-First floating ring; 120-First net; 200-Second floating body; 210-Second floating ring; 220-Second net; 300-Support part; 310-Support rod; 400-Fixing part; 410-Anchor pile; 420-Rope; 500-Buffer device. Detailed Implementation

[0022] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0023] In this disclosure, unless otherwise stated, the directional terms "above" and "below" are defined based on the actual direction of use of the relevant components. For example, "above" the second floating body means that when the marine flotation device is in use, the first floating body floats on the sea surface, while the second floating body is located on the side furthest from the sea surface compared to the first floating body, and is at a certain distance from the sea surface; "above" the first net means that when the first floating ring floats on the sea surface, the height of the first net is higher than the sea level, i.e., it is not submerged in seawater. "Inner" and "outer" refer to the outline of the corresponding components themselves. For example, "the first net connected to the "inner ring" of the first floating ring means that the four sides of the first net are connected to the first floating ring, and the entire first net is arranged in the closed space formed by the first floating ring.

[0024] In addition, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0025] Reference Figures 1-2According to a first aspect of this disclosure, a marine floating device is provided for supporting photovoltaic panels, comprising a floating part and a fixing part 400. The floating part includes a first floating body 100 for floating on the sea surface, a second floating body 200 for mounting the photovoltaic panels and disposed above the first floating body 100, and a support part 300 disposed between the first floating body 100 and the second floating body 200. Placing the photovoltaic panels on the second floating body 200, which is far from the sea surface, can reduce the impact of waves on the photovoltaic panels and extend their service life. The support part includes a plurality of support rods 310 supporting the first floating body 100 and the second floating body 200. This disclosure does not limit the number or structure of the support rods 310; the number can be 10, 20, etc.; and their shape can be cylindrical, elongated hexahedron, etc. The fixing part 400 includes a plurality of anchor piles 410 for fixing to the seabed and a plurality of ropes 420 connecting the respective anchor piles 410 and the first floating body 100. This disclosure does not limit the number of anchor piles 410; it can be four, five, etc. The first floating body 100 includes a first floating ring 110 and a first net 120 connected to the inner ring of the first floating ring 110. The first net 120 is used to arrange electrical components. The floating part is configured such that, when self-floating and supporting the photovoltaic panel, the first net 120 is located above the sea surface. Here, electrical components can refer to any related equipment used in conjunction with the photovoltaic panel, which has a certain degree of waterproof protection; this disclosure does not specifically limit its composition.

[0026] It should be explained that the aforementioned "the floating part is configured such that when it floats on its own and supports the photovoltaic panel, the first net 120 is located above the sea surface" means that when the marine floating device is in use, the first net 120 is located above the sea surface, i.e., not submerged in water, to prevent electrical components from being submerged in water for extended periods and causing safety issues. To achieve this technical effect, the shape, volume, and material density of each component can be specifically adapted. During design and manufacturing, it is necessary to ensure that the weight of the seawater displaced by the portion of the first floating ring 110 located below the first net 120 is greater than the weight of the floating part (including the weight of the photovoltaic panel). Here, it should be noted that in this embodiment, the force exerted by the fixing part 400 on the floating part is much smaller than the weight of the floating body and the buoyancy it experiences. The aforementioned "ensuring that the weight of the seawater displaced by the portion of the first floating ring 110 located below the first net 120 is greater than the weight of the floating part" ignores the buoyancy and weight of the rope 420. When the fixed part 400 has a significant impact on the overall buoyancy and gravity of the floating device (e.g., when the gravity or buoyancy of the rope 420 is severely unbalanced), the buoyancy of the rope 420 and the weight of the rope 420 itself must also be taken into account. That is, the sum of the weight of the displaced seawater of the portion of the first floating ring 110 located below the first net 120 and the weight of the displaced seawater of the rope 420 must be greater than the sum of the weights of the floating part and the rope 420. Furthermore, the weight of the displaced seawater needs to be calculated based on the seawater density of the actual sea area where it is used. This disclosure does not impose any restrictions on this, as long as the first net 120 is ultimately positioned above the sea surface when the floating device is placed in the sea.

[0027] This disclosure does not limit the material and length of the rope 420, which is determined based on the design load and the allowable displacement of the floating body. The rope 420 may be made of steel wire or polymer material. Each rope 420 is connected to a corresponding anchor pile 410 and the first floating body 100 to ensure that the floating body will not be swept away by the waves and to facilitate management.

[0028] As described above, the connection of the first net 120 to the inner circle of the first floating body 100 means that the main body of the first net 120 is located within the closed space formed by the first floating body 100, and the surrounding portions of the first net 120 are connected to the first floating body 100. This disclosure does not limit the connection position between the first net 120 and the first floating body 100. For example, in the vertical direction (directions towards and away from the sea surface), the surrounding portions of the first net 120 may be connected to the upper portion of the first floating body 100. Alternatively, they may be connected to the middle portion of the first floating body 100. Or, they may be connected to the lower portion of the first floating body 100.

[0029] In the embodiments disclosed herein, the first floating ring 110 can be constructed as a ring shape. This design, compared to a polygonal structure, can better dissipate and absorb the impact force when hit by waves, making the device more stable as a whole and less likely to be overturned by waves.

[0030] By using the above technical solution, the electrical components are arranged on the first net 120. Since the first net 120 is located on the lower side of the entire floating part, the center of gravity of the floating device can be effectively lowered, making it more stable without the need to add additional weight blocks, which would increase the overall weight of the floating device. In addition, the spaced arrangement of multiple support rods 310 can also reduce the force-bearing area when waves hit the floating device, further improving the stability of the device. Because the first net 120 is located above the sea surface when floating, the electrical components are prevented from being submerged in seawater for extended periods, thus avoiding potential safety hazards.

[0031] Reference Figures 1-2 In the embodiments disclosed herein, the second floating body 200 may include a second floating ring 210 and a second net 220 connected to the inner ring of the second floating ring 210. The side of the second net 220 facing away from the support rod 310 is used to install a photovoltaic panel. Since the photovoltaic panel is installed on the side of the second net 220 facing away from the support rod 310 (at a certain distance from the sea surface), the impact of waves on the photovoltaic panel can be reduced, extending its service life. Furthermore, placing the photovoltaic panel in this position can provide shade for the electrical components below, preventing them from being exposed to direct sunlight for extended periods, which could lead to increased temperatures, safety hazards, or reduced service life.

[0032] By mounting the photovoltaic panel on the second floating body 200, in the event of an accident causing the support rod 310 and the first floating body 100 to be submerged below sea level, the second floating body 200 can provide buoyancy to the photovoltaic panel, preventing it from being submerged and providing secondary protection. Similar to the first netting 120, the second netting 220 being connected to the inner circle of the second floating ring 210 means that the main body of the second netting 220 is located within the closed space formed by the second floating body 200, and the surrounding parts of the second netting 220 are connected to the second floating body 200.

[0033] To reduce the difficulty of production and procurement, in the embodiments of this disclosure, the first floating ring 110 and the second floating ring 210 can be the same, and the first net 120 and the second net 220 can be the same. With this design, it is not necessary to distinguish between the first floating ring 110 and the second floating ring 210, and the first net 120 and the second net 220 during production and procurement, effectively reducing process costs and process difficulty.

[0034] Reference Figures 1-2In the embodiments of this disclosure, multiple support rods 310 can be circumferentially and equidistantly supported between the first floating ring 110 and the second floating ring 210. This design allows for a more even distribution of force on the first floating ring 110 and the second floating ring 210, which is beneficial for improving the stability of the marine floating device. The spacing between two adjacent support rods 310 can be adaptively designed according to the actual load-bearing capacity.

[0035] To reduce the overall weight of the marine floating device, in embodiments of this disclosure, the support rod 310 may be constructed as a hollow structure. Furthermore, in other embodiments, the weight of the floating device can also be reduced by decreasing the number of support rods 310.

[0036] To enhance the strength of the marine floating device and prevent deformation under wave action, thus extending its service life, in the embodiments of this disclosure, the first floating ring 110 and the second floating ring 210 can be made of steel, and multiple support rods 310 can be welded to the first floating ring 110 and the second floating ring 210 respectively (in this case, the support rods 310 are also not made of metal). Furthermore, in some other embodiments, the support rods 310 can also be connected between the first floating ring 110 and the second floating ring 210 by bolts, screws, etc., and this disclosure does not impose any limitations on this.

[0037] In embodiments of this disclosure, the plurality of support rods 310 can be configured to be length-adjustable. Specifically, they can be telescopic rod structures. In use, they can be lengthened or shortened according to wave height, the mass of the second float 200, and the allowable deformation of the support rods 310.

[0038] When the floating device is subjected to a sudden impact from waves, the internal force of rope 420 will increase sharply. To prevent rope 420 from breaking due to the sudden impact, refer to... Figures 1-2 In embodiments of this disclosure, the marine floating device may further include a buffer device 500 disposed on the rope 420. The buffer device 500 is configured to deform when the tension on the rope 420 reaches a preset value to prevent the tension from increasing. This disclosure does not limit the preset value, which may be adaptively designed according to the actual conditions of the rope 420.

[0039] This disclosure does not limit the buffer device 500. For example, in an embodiment of this disclosure, it may be a spring connected to the rope 420. When the tension on the rope 420 exceeds a preset value, the spring deforms to prevent the tension from increasing. Furthermore, in other embodiments, the buffer device 500 may also be a rubber rope with a certain elasticity.

[0040] To further reduce the weight of the marine floating device, in embodiments of this disclosure, the first floating ring 110 and the second floating ring 210 can be hollow. Furthermore, in other embodiments, to ensure the strength of the first floating ring 110 and the second floating ring 210 and prevent deformation, they can be filled with a low-density support material, such as foam.

[0041] In the embodiments of this disclosure, the first mesh 120 and the second mesh 220 can each be composed of multiple steel cables, i.e., multiple steel cables are interlaced to form corresponding meshes. The specifications of the first mesh 120 and the second mesh 220 can be determined based on the load of the equipment (electrical components, photovoltaic panels, etc.) installed on them and the allowable deformation of the steel cables. The first floating ring 110 and the second floating ring 210 can each be provided with adjusting members for adjusting the tension of the first mesh 120 and the second mesh 220. The adjusting members can tighten or loosen the steel cables according to actual needs to meet different usage conditions. In addition to the steel cables mentioned above, in some other embodiments, the first mesh 120 and the second mesh 220 can also be formed by multiple tie rods, which is not limited in this disclosure.

[0042] This disclosure does not limit the above-mentioned adjusting components. For example, in the embodiments of this disclosure, the adjusting components may be a plurality of turnbuckles provided on the first floating ring 110 and the second floating ring 210, with the side of the turnbuckle away from the floating ring connected to the corresponding steel cable, so that the tension of the steel cable can be adjusted by adjusting the turnbuckle.

[0043] According to a second aspect of this disclosure, a marine photovoltaic system is provided, comprising a photovoltaic panel and the aforementioned marine floating device, wherein the photovoltaic panel can be installed on a second floating body 200. Since this marine photovoltaic system possesses all the beneficial effects of the aforementioned marine floating device, further details are omitted here.

[0044] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0045] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0046] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A floating device for supporting photovoltaic panels, characterized in that, The floating device includes: a floating part and a fixing part, wherein... The floating part includes: A first floating body, for floating on the sea surface, includes a first floating ring and a first net connected to the inner ring of the first floating ring, the first net being used to arrange electrical components; A second floating body, used to mount the photovoltaic panel, is positioned above the first floating body; and The support section includes multiple support rods that are supported between the first floating body and the second floating body. The fixing part includes: Multiple anchor piles used to secure the structure to the seabed; and Multiple ropes connecting the respective anchor piles and the first floating body. The floating part is configured such that when it floats on its own and when it supports the photovoltaic panel, the first net is located above the sea surface.

2. The marine floating device according to claim 1, characterized in that, The second floating body includes a second floating ring and a second net connected to the inner ring of the second floating ring. The side of the second net opposite to the support rod is used to install the photovoltaic panel.

3. The marine floating device according to claim 2, characterized in that, The first floating ring and the second floating ring are the same, and the first net and the second net are the same.

4. The marine floating device according to claim 2, characterized in that, The plurality of support rods are circumferentially equidistantly supported between the first floating ring and the second floating ring.

5. The marine floating device according to claim 4, characterized in that, The first and second floating rings are made of steel, and the plurality of support rods are welded to the first and second floating rings respectively.

6. The marine floating device according to claim 2, characterized in that, The first and second floating rings are hollow.

7. The marine floating device according to claim 2, characterized in that, The first and second nets are composed of multiple steel cables, and the first and second floating rings are respectively provided with adjusting components for adjusting the tightness of the first and second nets.

8. The marine floating device according to any one of claims 1-5, characterized in that, The multiple support rods are configured to be length-adjustable.

9. The marine floating device according to claim 1, characterized in that, It also includes a buffer device disposed on the rope, the buffer device being configured to deform when the tension on the rope reaches a preset value to prevent the tension from increasing.

10. A marine photovoltaic system, characterized in that, It includes a photovoltaic panel and the marine floating device according to any one of claims 1-9, wherein the photovoltaic panel is installed on the second floating body.

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