Water surface photovoltaic supporting device and water surface photovoltaic system

Abstract

The invention discloses a water surface photovoltaic supporting device and a water surface photovoltaic system. The water surface photovoltaic supporting device comprises a column body, a supporting assembly and a counterweight assembly, and the supporting assembly is arranged on the upper portion of the column body and used for being connected with a photovoltaic panel assembly so that the photovoltaic panel assembly can form a preset included angle with the horizontal plane and is supported at the top of the column body; the counterweight assembly is connected with the column body, the counterweight assembly can move in the vertical direction relative to the column body, and a pull rope is arranged between the counterweight assembly and the photovoltaic panel assembly; at least part of the counterweight assembly is located below the liquid level. The photovoltaic panel assembly is tuned by using the acting force between the counterweight assembly and water when the counterweight assembly reciprocates up and down, so that the stability of the photovoltaic panel assembly is higher when the photovoltaic panel assembly is windy and rainy, the situation that the stability of the supporting device becomes poor due to the fact that the photovoltaic panel assembly shakes in the windy and rainy weather is avoided, the stress performance of the photovoltaic support is optimized, and the service life of the photovoltaic support is prolonged. The stability of the photovoltaic support structure can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaics, and particularly relates to a floating photovoltaic support device and a floating photovoltaic system. Background Art

[0002] The photovoltaic industry has developed rapidly. Arranging photovoltaic equipment in shallow water areas can further rationally utilize the corresponding water space, reduce the occlusion of obstacles, and improve the power generation and efficiency.

[0003] However, due to the influence of wind and rain weather, when the photovoltaic equipment swings, the stability of its support device becomes worse, and even overturns, causing huge economic losses. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0005] To this end, an embodiment of the present invention provides a floating photovoltaic support device, which optimizes the stress performance of the photovoltaic support and can improve the stability of the photovoltaic support structure.

[0006] An embodiment of the present invention also provides a floating photovoltaic system.

[0007] The floating photovoltaic support device according to an embodiment of the present invention includes:

[0008] A column;

[0009] A support assembly, which is arranged on the upper part of the column and is used to connect the photovoltaic panel assembly so that the photovoltaic panel assembly forms a preset angle with the horizontal plane and is supported on the top of the column;

[0010] A counterweight assembly, which is connected to the column, and the counterweight assembly is movable relative to the column in the vertical direction. There is a pull rope between the counterweight assembly and the photovoltaic panel assembly;

[0011] At least part of the counterweight assembly is located below the liquid level.

[0012] The floating photovoltaic support device according to an embodiment of the present invention tunes the photovoltaic panel assembly by using the interaction force between the counterweight assembly and water during the reciprocating movement up and down, so that the photovoltaic panel assembly has higher stability when affected by wind and rain weather, and avoids the deterioration of the stability of the support device due to the shaking of the photovoltaic panel assembly in wind and rain weather. It optimizes the stress performance of the photovoltaic support and can improve the stability of the photovoltaic support structure.

[0013] In some embodiments, the column has a sliding section, the counterweight assembly includes a body and a counterweight. The body is annular, sleeved on the sliding section of the column. The body has an inner cavity, and the number of the counterweights is multiple. The counterweights are arranged in the inner cavity.

[0014] In some embodiments, a lubricating cushion layer is arranged on the side wall surface of the sliding section, and a slider abutted against the sliding section is arranged on the body;

[0015] And / or, the outer wall of the body has a convex part which has a first inclined surface and a second inclined surface. The first inclined surface and the second inclined surface are arranged on the outer wall of the body along the vertical direction.

[0016] In some embodiments, the convex part is annular and coaxially arranged with the body;

[0017] Or, the number of the convex parts is multiple, and the multiple convex parts are spaced apart in the circumferential direction of the body. A diversion groove is formed between two adjacent convex parts.

[0018] In some embodiments, the number of the counterweight assemblies is multiple, and the multiple counterweight assemblies are spaced apart along the vertical direction, and a connecting piece is arranged between two adjacent counterweight assemblies.

[0019] In some embodiments, the connecting piece is flexible.

[0020] In some embodiments, the pulling rope has a tension, and the tension is not less than a first preset value;

[0021] And / or, there are multiple pulling ropes. One end of each pulling rope is connected to the counterweight assembly, and the other end is connected to the photovoltaic panel assembly.

[0022] In some embodiments, the support assembly includes:

[0023] A first rotary member and a second rotary member connected to the column. The first rotary member is located at the top of the column. The second rotary member is spaced apart from the first rotary member in the vertical direction, and the first rotary member and the second rotary member can rotate around the axis of the column. The middle part of the photovoltaic panel assembly is rotatably connected to the first rotary member;

[0024] A first support member. One end of the first support member is rotatably connected to the second rotary member, and the other end is rotatably connected to the lower part of the photovoltaic panel assembly;

[0025] A second support member. One end of the second support member is rotatably connected to the second rotary member, and the other end is rotatably connected to the upper part of the photovoltaic panel assembly;

[0026] A limiting member, which is arranged between the column body and the first rotating member and / or between the column body and the second rotating member to prevent the first rotating member and / or the second rotating member from rotating.

[0027] In some embodiments, both the first support member and the second support member are telescopic rods;

[0028] And / or, both the first rotating member and the second rotating member include a rotating table, and the rotating table is connected to the column body through a bearing;

[0029] And / or, the number of both the first support member and the second support member is multiple;

[0030] And / or, a first limiting hole is provided on the second rotating member, a first plate is provided on the column body, the first plate and the second rotating member are arranged oppositely, a plurality of second limiting holes are provided on the first plate, and the limiting member is arranged in the first limiting hole and the corresponding second limiting hole.

[0031] The floating photovoltaic system according to an embodiment of the present invention includes:

[0032] A photovoltaic panel assembly;

[0033] A supporting device, which is the floating photovoltaic supporting device as described in any one of the above, and the photovoltaic panel assembly is connected to the top of the supporting device;

[0034] The number of the supporting devices is multiple, and the multiple supporting devices are arranged at intervals in an array, and the interval distance between two adjacent supporting devices is not less than a second preset value, so that the photovoltaic panel assembly is not blocked under sunlight irradiation. Description of the Drawings

[0035] Figure 1 is a schematic structural diagram of the floating photovoltaic supporting device according to an embodiment of the present invention.

[0036] Figure 2 is Figure 1 an enlarged schematic structural diagram of part A in

[0037] Figure 3 is a schematic layout structural diagram of the counterweight assembly according to an embodiment of the present invention.

[0038] Figure 4 is a schematic layout structural diagram of the counterweight assembly according to another embodiment of the present invention.

[0039] Figure 5 is a schematic structural diagram of the floating photovoltaic system according to an embodiment of the present invention.

[0040] Reference Signs:

[0041] 100. Floating PV support device;

[0042] 1. Cylinder; 11. Lubricating cushion layer;

[0043] 2. Support assembly; 21. First rotating member; 22. Second rotating member; 23. First support member; 24. Second support member; 25. Limiting member;

[0044] 3. Counterweight assembly; 31. Body; 32. Protrusion; 33. Slide block; 34. Pull rope; 35. Connecting member; 36. Flow guiding groove;

[0045] 4. PV panel assembly. Specific implementation manner

[0046] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0047] The floating PV support device 100 of the embodiment of the present invention includes a cylinder 1, a support assembly 2 and a counterweight assembly 3. The support assembly 2 is arranged on the upper part of the cylinder 1 and is used to connect the PV panel assembly 4 so that the PV panel assembly 4 forms a preset angle with the horizontal plane and is supported on the top of the cylinder 1. The counterweight assembly 3 is connected to the cylinder 1, and the counterweight assembly 3 is movable relative to the cylinder 1 in the vertical direction. There is a pull rope 34 between the counterweight assembly 3 and the PV panel assembly 4. At least a part of the counterweight assembly 3 is located below the liquid level.

[0048] It should be understood that the lower end of the cylinder 1 is fixed on the foundation pile at the bottom of the water to provide support for the PV panel assembly 4. The PV panel assembly 4 is supported on the top of the cylinder 1 through the support assembly 2. The counterweight assembly 3 can move up and down along the cylinder 1. When the counterweight assembly 3 is immersed below the water surface, it will be subject to the resistance of water as it moves back and forth. Therefore, when there is no wind, the positions of the counterweight assembly 3 and the cylinder 1 are relatively fixed. When there are windy and rainy weather, the PV panel assembly 4 will vibrate due to the wind force. The counterweight assembly 3 provides a pulling force to the PV panel assembly 4, and the pulling force will change with the movement of the counterweight assembly 3, thereby tuning the vibration frequency of the PV panel assembly 4, making the area of the PV panel assembly 4 stable, capable of resisting higher wind forces, and having higher stability.

[0049] The floating PV support device 100 of the embodiment of the present invention uses the interaction force between the counterweight assembly 3 and water during the reciprocating movement to tune the PV panel assembly 4, making the PV panel assembly 4 more stable in windy and rainy weather, avoiding the poor stability of the support device caused by the shaking of the PV panel assembly 4 in windy and rainy weather, optimizing the stress performance of the PV support, and improving the stability of the PV support structure.

[0050] In some embodiments, the column 1 has a sliding section, and the counterweight assembly 3 includes a body 31 and counterweights. The body 31 is annular, sleeved on the sliding section of the column 1, and has an inner cavity. The number of counterweights is multiple, and the counterweights are arranged in the inner cavity.

[0051] It should be understood that in order to improve the smoothness of the counterweight assembly 3 during the up and down sliding process, a sliding section is provided on the column 1, which can avoid damaging the performance of the column 1 due to long-term sliding friction. The counterweight assembly 3 includes a body 31, and the counterweights are arranged in the inner cavity of the body 31. The counterweights can be steel balls, steel sheets, liquid media, etc. By adjusting the weight of the counterweights, the total weight of the counterweight assembly 3 can also be adjusted, thereby optimizing the adjustment effect on the vibration frequency of the photovoltaic panel assembly 4.

[0052] Further, a lubricating cushion layer 11 is provided on the side wall surface of the sliding section, and a slider 33 is provided on the body 31 and abuts against the sliding section.

[0053] The lubricating cushion layer 11 can be a copper sheet provided on the outer wall surface of the column 1, or a composite material with lubricating effect, etc. At the same time, the material of the slider 33 and the material of the lubricating cushion layer 11 can be the same, which can reduce the damage to the body 31 during the sliding friction process.

[0054] Further, the outer wall of the body 31 has a protrusion 32, and the protrusion 32 has a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are arranged on the outer wall of the body 31 in the vertical direction.

[0055] In order to improve the resistance effect of water on the up and down movement of the counterweight assembly 3, a protrusion 32 is provided on the outer wall of the body 31. The first inclined surface and the second inclined surface are used to guide the flow of water, avoiding excessive resistance between the protrusion 32 and water, resulting in structural damage to the photovoltaic panel assembly 4 due to a rigid tensile force.

[0056] In some embodiments, the protrusion 32 is annular and coaxially arranged with the body 31.

[0057] Alternatively, the number of protrusions 32 is multiple, and the multiple protrusions 32 are spaced apart in the circumferential direction of the body 31, and a diversion groove 36 is formed between adjacent two protrusions 32.

[0058] The protrusion 32 can adopt the above two forms and be selected according to requirements. When the protrusion 32 is annular, the acting force between the protrusion 32 and water will be relatively large, and the resistance received by the counterweight assembly 3 will be large. When the protrusion 32 is multiple and spaced apart in the circumferential direction of the body 31, the acting force between the protrusion 32 and water will be relatively small, and water can flow through the diversion groove 36.

[0059] The structure of the convex portion 32 can be determined according to the local environmental climate. For example, when used on the sea surface, due to the relatively large wind and waves, a circular convex portion 32 can be adopted. Another example is that when used in an inland lake, a counterweight assembly 3 with a diversion groove 36 can be adopted.

[0060] In some embodiments, the number of the counterweight assemblies 3 is multiple. The multiple counterweight assemblies 3 are arranged at intervals in the vertical direction, and a connecting member 35 is provided between two adjacent counterweight assemblies 3.

[0061] It should be understood that arranging multiple counterweight assemblies 3 can further adjust the vibration of the photovoltaic panel assembly 4 through the asynchronous up and down sliding of the multiple counterweight assemblies 3, reduce the vibration amplitude and frequency of the photovoltaic panel assembly 4, and improve the stability of the photovoltaic system.

[0062] Furthermore, the connecting member 35 has flexibility. The connecting member 35 can be a rope, a spring, etc., so that the distance between two adjacent counterweight assemblies 3 can change.

[0063] In some embodiments, the stay rope 34 has a tension, and the tension is not less than a first preset value. By evaluating the local environmental climate, the magnitude of the tension of the stay rope 34 is determined. When the wind force is relatively small, the weight of the counterweight assembly 3 can be adjusted to be smaller to reduce the tension of the stay rope 34. When the wind force is relatively large, the weight of the counterweight assembly 3 can be increased to increase the tension of the stay rope 34.

[0064] For example, the tension on the stay rope 34 is not less than 300 N.

[0065] Furthermore, there are multiple stay ropes 34. One end of the stay rope 34 is connected to the counterweight assembly 3, and the other end of the stay rope 34 is connected to the photovoltaic panel assembly 4. In the embodiment of the present invention, the multiple stay ropes 34 can ensure the stable force of the photovoltaic panel assembly 4, avoid deformation of the photovoltaic panel assembly 4 after local force application, and avoid the photovoltaic panel from falling off or being damaged.

[0066] In some embodiments, the support assembly 2 includes a first rotary member 21 and a second rotary member 22 connected to the column 1, a first support member 23, a second support member 24, and a limiting member 25. The first rotary member 21 is located at the top of the column 1. The second rotary member 22 is spaced from the first rotary member 21 in the vertical direction, and the first rotary member 21 and the second rotary member 22 are rotatable about the axis of the column 1. The middle part of the photovoltaic panel assembly 4 is rotatably connected to the first rotary member 21. One end of the first support member 23 is rotatably connected to the second rotary member 22, and the other end is rotatably connected to the lower part of the photovoltaic panel assembly 4. One end of the second support member 24 is rotatably connected to the second rotary member 22, and the other end is rotatably connected to the upper part of the photovoltaic panel assembly 4. The limiting member 25 is provided between the column 1 and the first rotary member 21 and / or between the column 1 and the second rotary member 22 to prevent the first rotary member 21 and / or the second rotary member 22 from rotating.

[0067] In the embodiments of the present invention, the middle part of the photovoltaic panel assembly 4 can swing in pitch by being rotatably connected to the first rotary member 21, and the first rotary member 21 and the second rotary member 22 can rotate about the axis of the column 1, so that the photovoltaic panel assembly 4 can adjust its orientation.

[0068] In different seasons, by adjusting the pitch angle and orientation of the photovoltaic panel assembly 4, it is possible to better receive sunlight and improve the power generation efficiency. After the adjustment of the photovoltaic panel assembly 4 is in place, it can be locked and fixed by the limiting member 25 to ensure the stability of the photovoltaic panel assembly 4.

[0069] In some embodiments, both the first support member 23 and the second support member 24 are telescopic rods. The first support member 23 and the second support member 24 can be telescoped to adjust the pitch angle of the photovoltaic panel assembly 4 and ensure that the photovoltaic panel assembly 4 is in a stable support state.

[0070] For example, the telescopic rod includes a right-handed screw, a left-handed screw, and a screw sleeve. The right-handed screw and the left-handed screw are threadedly connected to the screw sleeve. By rotating the screw sleeve, the total length of the telescopic rod can be adjusted.

[0071] In some embodiments, both the first rotary member 21 and the second rotary member 22 include a rotary table, and the rotary table is connected to the column 1 through a bearing.

[0072] The number of both the first support member 23 and the second support member 24 is multiple. The photovoltaic panel assembly 4 can establish a support force system with the column 1 through multiple points to improve stability.

[0073] A first limiting hole is provided on the second rotating member 22, and a first plate is provided on the column body 1. The first plate and the second rotating member 22 are arranged oppositely. A plurality of second limiting holes are provided on the first plate. The limiting member 25 is arranged in the first limiting hole and the corresponding second limiting hole. Through the limiting holes, the stability of the limiting member 25 after being inserted into the first limiting hole and the corresponding second limiting hole can be ensured, and further movement can be avoided. The arrangement of the plurality of second limiting holes matches the number of times and directions that the photovoltaic panel assembly 4 needs to be adjusted during a year, enabling rapid adjustment and improving the operation efficiency.

[0074] The floating photovoltaic system according to an embodiment of the present invention includes a photovoltaic panel assembly 4 and a supporting device. The supporting device is the floating photovoltaic supporting device 100 as described in any one of the above. The photovoltaic panel assembly 4 is connected to the top of the supporting device. The number of the supporting devices is multiple, and the multiple supporting devices are arranged at intervals in an array. The distance between two adjacent supporting devices is not less than a second preset value, so that the photovoltaic panel assembly 4 is not blocked under sunlight irradiation.

[0075] The beneficial effects achieved by the floating photovoltaic system according to an embodiment of the present invention are the same as those of the floating photovoltaic supporting device in the above embodiment, so they will not be elaborated here.

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0077] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0078] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0080] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0081] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A water surface photovoltaic support device, characterized in that: include: Column; A support assembly, the support assembly is arranged at the upper part of the column, and is used to connect the photovoltaic panel assembly so that the photovoltaic panel assembly is at a preset angle with the horizontal plane and is supported on the top of the column; A counterweight assembly, the counterweight assembly is connected to the column and is movable in a vertical direction relative to the column, and a pull rope is provided between the counterweight assembly and the photovoltaic panel assembly; At least a portion of the counterweight assembly is located below the liquid surface.

2. The water surface photovoltaic support device according to claim 1, characterized in that: The column has a sliding section, and the counterweight assembly includes a body and a counterweight piece. The body is annular and is sleeved on the sliding section of the column. The body has an inner cavity. There are multiple counterweight pieces, and the counterweight pieces are arranged in the inner cavity.

3. The water surface photovoltaic support device according to claim 2, characterized in that: A lubricating pad is provided on the side wall surface of the sliding section, and a sliding block abutting against the sliding section is provided on the main body; And / or, a protrusion is provided on the outer wall of the body, the protrusion has a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are arranged on the outer wall of the body along a vertical direction.

4. The water surface photovoltaic support device according to claim 3, characterized in that: The protrusion is annular and is coaxially arranged with the body; Alternatively, there are multiple protrusions, which are spaced apart in the circumferential direction of the body, and guide grooves are formed between two adjacent protrusions.

5. The water surface photovoltaic support device according to any one of claims 1 to 4, characterized in that: There are multiple counterweight assemblies, which are arranged at intervals along the vertical direction, and a connecting piece is provided between two adjacent counterweight assemblies.

6. The water surface photovoltaic support device according to claim 5, characterized in that: The connecting piece is flexible.

7. The water surface photovoltaic support device according to claim 1, characterized in that: The pull rope has tension, and the tension is not less than a first preset value; And / or, there are multiple pull ropes, one end of each pull rope is connected to the counterweight assembly, and the other end of each pull rope is connected to the photovoltaic panel assembly.

8. The water surface photovoltaic support device according to claim 1, characterized in that: The support assembly comprises: A first rotating component and a second rotating component connected to the column, wherein the first rotating component is located at the top of the column, the second rotating component and the first rotating component are spaced apart in the vertical direction, and the first rotating component and the second rotating component are rotatable around the axis direction of the column, and the middle part of the photovoltaic panel assembly is rotatably connected to the first rotating component; a first support member, wherein one end of the first support member is rotatably connected to the second rotating member, and the other end of the first support member is rotatably connected to the lower part of the photovoltaic panel assembly; a second support member, wherein one end of the second support member is rotatably connected to the second rotating member, and the other end of the second support member is rotatably connected to the upper portion of the photovoltaic panel assembly; A limit member, wherein the limit member is arranged between the column and the first rotating member, and / or between the column and the second rotating member, so as to prevent the first rotating member and / or the second rotating member from rotating.

9. The water surface photovoltaic support device according to claim 8, characterized in that: The first support member and the second support member are both telescopic rods; And / or, the first rotating component and the second rotating component both include a rotating table, and the rotating table is connected to the column through a bearing; And / or, the number of the first supporting member and the number of the second supporting member are both plural; And / or, a first limiting hole is provided on the second rotating component, a first plate is provided on the column, the first plate and the second rotating component are arranged relatively to each other, a plurality of second limiting holes are provided on the first plate, and the limiting member is arranged in the first limiting hole and the corresponding second limiting hole.

10. A water surface photovoltaic system, characterized in that: include: Photovoltaic panel assembly; A supporting device, wherein the supporting device is a water surface photovoltaic supporting device as claimed in any one of claims 1 to 9, and the photovoltaic panel assembly is connected to the top of the supporting device; There are multiple supporting devices, which are arranged in an array and spaced apart from each other. The spacing between two adjacent supporting devices is not less than a second preset value, so that the photovoltaic panel assembly is not blocked under sunlight.

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