Energy absorbers for wind protection of photovoltaic modules

Abstract

This utility model discloses an energy absorber for wind protection of photovoltaic modules. The energy absorber includes: a fixing member for connection to a photovoltaic support column; a rotating member rotatably sleeved with the fixing member for connection to a rotatable photovoltaic module; a hollow annular sealed cavity formed between the fixing member and the rotating member; the hollow annular sealed cavity being filled with a viscous liquid; at least one first partition portion disposed within the hollow annular sealed cavity and fixedly connected to the fixing member; at least one second partition portion disposed within the hollow annular sealed cavity and fixedly connected to the rotating member; and a damping flow channel formed on the first partition portion and / or the second partition portion; when the rotating member rotates, the viscous liquid flows through the damping flow channel, forming damping on the rotating member.

Description

Technical Field

[0001] This utility model relates to an energy absorber, specifically an energy absorber for wind protection of photovoltaic modules. Background Technology

[0002] Photovoltaic brackets are an indispensable part of photovoltaic power generation systems. Their main function is to support and fix rotatable photovoltaic modules, ensuring that the rotatable photovoltaic modules can work stably under various climatic conditions.

[0003] Photovoltaic mounting systems can be categorized into fixed systems and tracking systems based on their installation method. Fixed systems do not rotate with changes in the sun's angle of incidence, while tracking systems use electromechanical or hydraulic devices to rotate the rotatable photovoltaic modules according to the sun's trajectory, thereby improving power generation efficiency.

[0004] However, in severe weather conditions such as strong winds, rotatable photovoltaic modules, due to their large area, are easily affected by wind loads, resulting in vibration and swaying, which may lead to damage and affect power generation efficiency. Current solutions involve adding linear vibration dampers to both sides of the photovoltaic panel's rotation axis to suppress oscillations and prevent damage to the tracking support. However, this solution still has some problems. For example, during rotation, the damping rod is limited by the damping arm, providing limited damping force; as the photovoltaic panel rotates from a small angle to a large angle, the damping arm becomes smaller, resulting in the lowest damping torque at the most vulnerable point when the panel reaches a large angle; and installation is complex.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] Purpose of the utility model: The technical problem to be solved by this utility model is to provide an energy absorber for wind protection of photovoltaic modules, addressing the shortcomings of the existing technology.

[0007] To address the aforementioned technical problems, this utility model discloses an energy absorber for wind protection of photovoltaic modules, comprising:

[0008] Fasteners are used to connect to the photovoltaic support column;

[0009] A rotating component, rotatably sleeved with the fixed component, is used to connect to a rotatable photovoltaic module;

[0010] A hollow annular sealing cavity is formed between the fixed member and the rotating member; the hollow annular sealing cavity is filled with a viscous liquid;

[0011] At least one first partition is disposed within the hollow annular sealing cavity and fixedly connected to the fastener;

[0012] At least one second partition is disposed within the hollow annular sealing cavity and fixedly connected to the rotating member;

[0013] And a damping flow channel is formed on the first partition and / or the second partition; when the rotating member rotates, the viscous liquid flows through the damping flow channel, forming damping on the rotating member.

[0014] Specifically, the damping flow channel is any one or a combination of several of the following: the first assembly gap, the second assembly gap, the first flow hole, and the second flow hole;

[0015] The first assembly gap is formed between the second partition and the fastener;

[0016] The second assembly gap is formed between the first partition and the rotating component;

[0017] The first flow hole is disposed through the second partition;

[0018] The second flow passage is disposed through the first partition.

[0019] Preferably, the damping flow channel is a combination of the first assembly gap and the second assembly gap.

[0020] In the energy absorber of this embodiment, when the rotating component rotates, the viscous liquid inside the high-pressure chamber flows. Part of it flows out from the first assembly gap, and the other part flows out from the second assembly gap, resulting in synchronous flow between the outer and inner layers inside the high-pressure chamber. Compared to the method of forming a damping flow channel with flow holes, the assembly gap is less prone to blockage and does not cause jamming. It can be made very small, thereby forming a relatively large damping.

[0021] Furthermore, in this embodiment, the damping force generated by the flow of the liquid includes not only the damping force brought about by the viscous liquid passing through the damping flow channel, but also the viscous force generated between the viscous liquid and the cavity wall when the viscous liquid flows inside each cavity. Therefore, this embodiment achieves a larger damping force.

[0022] Specifically, multiple first and second partitions are provided. Along the circumferential direction of the rotation axis of the rotating member, the first and second partitions are alternately arranged at intervals.

[0023] Preferably, the first partition and the second partition are evenly spaced and alternately arranged.

[0024] Specifically, the first partition and the second partition divide the hollow annular sealed cavity into several fan-shaped separate cavities.

[0025] Optionally, the fixing member is sleeved on the outside of the rotating member.

[0026] Specifically, the rotatable photovoltaic module includes a photovoltaic support tube for supporting the photovoltaic panel. The rotating member is configured to be fixedly sleeved on the photovoltaic support tube, and the photovoltaic support tube is fixedly connected to the rotating member and the rotatable photovoltaic module.

[0027] Specifically, the energy absorber includes a sealing rotation assembly extending along the rotation axis of the rotating member. The sealing rotation assemblies are installed at both ends of the rotating member, and the two ends of the rotating member are connected to the fixing member through the sealing rotation assemblies to form the hollow annular sealing cavity.

[0028] Specifically, the sealing rotation assembly includes bearings and sealing rings. Extending along the rotation axis of the rotating component, bearings are mounted at both ends of the rotating component, and the rotating component is rotatably connected to the inner side of the fixed component via the bearings. A sealing ring is fitted to the outer side of the bearing furthest from the rotating component.

[0029] Beneficial effects:

[0030] 1. The energy absorber disclosed in this utility model can stably provide large damping. The stronger the wind, the greater the damping force, which can achieve a very good energy absorption effect.

[0031] 2. The energy absorber disclosed in this utility model has a simple structure, good product performance stability and durability, and is easy to implement in engineering, and can be widely promoted. Attached Figure Description

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0033] Figure 1 This is a schematic diagram of the assembly structure of an energy absorber, a rotatable photovoltaic module, and a photovoltaic support column, as disclosed in one embodiment of the present invention.

[0034] Figure 2 This is a front cross-sectional view of an energy absorber disclosed in one embodiment of the present invention.

[0035] Figure 3 The damping principle of the energy absorber disclosed in one embodiment of this utility model Figure 1 .

[0036] Figure 4 The damping principle of the energy absorber disclosed in one embodiment of this utility model Figure 2 .

[0037] Figure 5 The damping principle of the energy absorber disclosed in one embodiment of this utility model Figure 3 .

[0038] The accompanying labeling is as follows:

[0039] 1. Rotatable photovoltaic module; 3. Photovoltaic support tube; 4. Photovoltaic support column; 5. Fixing component; 6. Rotating component; 7. Bearing; 8. Sealing ring; 15. Hollow annular sealing cavity; 16. First partition; 17. Second partition; 18. First assembly gap; 151. First split cavity; 152. Second split cavity; 153. Third split cavity; 154. Fourth split cavity; 181. First assembly gap; 191. Second assembly gap. Detailed Implementation

[0040] Example 1,

[0041] This embodiment discloses an energy absorber for wind protection of photovoltaic modules, which includes a fixing member 5, a rotating member 6, a first partition 16, a second partition 17, and a damping overflow channel.

[0042] See Figure 1 The fixing member 5 is used to connect with the photovoltaic support column 4. The rotating member 6 is rotatably sleeved with the fixing member 5 and is used to connect with the rotatable photovoltaic module 1, so as to rotate with the rotatable photovoltaic module 1.

[0043] See Figures 3 to 4 A hollow annular sealing cavity 15 is formed between the fixed member 5 and the rotating member 6. The hollow annular sealing cavity 15 is filled with a viscous liquid, such as a high-viscosity oil.

[0044] See Figure 3 and Figure 4 The energy absorber includes two first partitions 16, which are disposed within a hollow annular sealed cavity 15 and fixedly connected to a fixing member 5.

[0045] See Figure 3 and Figure 4 The energy absorber includes two second partitions 17, which are disposed within the hollow annular sealed cavity 15 and fixedly connected to the rotating component 6.

[0046] The energy absorber also includes a damping flow channel, which is formed on the first partition 16 and / or the second partition 17. When the rotating member 6 rotates, the viscous liquid flows through the damping flow channel, creating damping for the rotating member 6.

[0047] It should be understood that the number of the first partition 16 in this embodiment is not limited to two; it can be set to one or more.

[0048] Specifically, the damping flow channel is any one or a combination of several of the following: the first assembly gap 181, the second assembly gap 191, the first flow hole, and the second flow hole.

[0049] The first assembly gap 181 is formed between the second partition 17 and the fastener 5.

[0050] The second assembly gap 191 is formed between the first partition 16 and the rotating member 6.

[0051] The first flow passage is provided through the second partition 17.

[0052] The second flow passage is provided through the first partition 16.

[0053] Preferably, such as Figure 5 As shown, the flow channel is a combination of the first assembly gap 181 and the second assembly gap 191.

[0054] For an energy absorber that has both a first assembly gap 181 and a second assembly gap 191, when the rotating part 6 rotates, the viscous liquid inside the high-pressure chamber flows. Part of it flows out from the first assembly gap 181, and the other part flows out from the second assembly gap 191, resulting in synchronous flow of the outer and inner layers inside the high-pressure chamber.

[0055] Compared to the flow channel formed by flow holes, the assembly gap is less prone to blockage and jamming, and can be made very small, thus forming a relatively large damping.

[0056] In addition, such as Figure 5 The damping force generated by the flow of the liquid shown includes not only the damping force brought about by the viscous liquid passing through the flow channel, but also the viscous force generated between the viscous liquid and the cavity walls when the viscous liquid flows inside each cavity. Therefore, this embodiment achieves a larger damping force.

[0057] Preferably, see Figure 5 Along the circumference of the rotation axis of the rotating member 6, the first partition 16 and the second partition 17 are evenly spaced and alternately arranged.

[0058] It should be understood that the spacing between the first partition 16 and the second partition 17 may not be uniform.

[0059] Specifically, the first partition 16 and the second partition 17 divide the hollow annular sealed cavity 15 into several fan-shaped separate cavities.

[0060] Optionally, see Figure 1 and Figure 2 The fixing component 5 is fitted onto the outside of the rotating component 6. See details... Figure 1The rotatable photovoltaic module 1 includes a photovoltaic support tube 3 and a photovoltaic panel fixedly connected to the photovoltaic support tube 3. A rotating component 6 is configured to be fixedly sleeved on the photovoltaic support tube 3, and the photovoltaic support tube 3 is fixedly connected to the rotating component 6 and the rotatable photovoltaic module 1. Rotation of the photovoltaic support tube 3 causes the rotating component 6 and the photovoltaic panel to rotate.

[0061] Specifically, the energy absorber includes a sealed rotating assembly extending along the rotation axis of the rotating member 6. Both ends of the rotating member 6 are equipped with the sealed rotating assembly, and the two ends of the rotating member 6 are connected to the fixing member 5 through the sealed rotating assembly to form a hollow annular sealed cavity 15.

[0062] Specifically, see Figure 2 The sealing rotation assembly includes bearings 7 and sealing rings 8. Extending along the rotation axis of the rotating component 6, bearings 7 are mounted at both ends of the rotating component 6, and the rotating component 6 is rotatably connected to the inner side of the fixed component 5 via the bearings 7. A sealing ring 8 is fitted to the outer side of the bearing 7 away from the rotating component 6, ensuring the product's sealing performance.

[0063] Below, refer to Figures 1 to 5 This embodiment describes how the energy absorber is used in the wind resistance process of photovoltaic brackets.

[0064] See Figure 3 and Figure 4 The first partition 16 and the second partition 17 divide the hollow annular sealed cavity 15 into several sector-shaped sub-cavities, including a first sub-cavity 151, a second sub-cavity 152, a third sub-cavity 153, and a fourth sub-cavity 154. Along... Figure 3 In a clockwise direction, the first split cavity 151, the second split cavity 152, the third split cavity 153 and the fourth split cavity 154 are arranged at intervals.

[0065] Because the hollow annular sealed cavity 15 is filled with highly viscous oil, when the rotating component 6 rotates counterclockwise, it drives the second partition 17 to rotate. The second partition 17 applies pressure to the viscous liquid in the first and third partition cavities 151 and 153, causing the first and third partition cavities 151 and 153 to shrink, while the second and fourth partition cavities 152 and 154 to expand. Therefore, the first and third partition cavities 151 and 153 are high-pressure cavities, and the second and fourth partition cavities 152 and 154 are low-pressure cavities. The highly viscous oil is squeezed from the high-pressure cavities to the low-pressure cavities. The smaller the flow channel, the greater the damping force. The greater the speed and the greater the oil pressure difference, the greater the damping force. When the rotating component 6 rotates clockwise, the second partition 17 applies pressure to the viscous liquid in the second and fourth partition cavities 152 and 154. The first and third partition cavities 151 and 153 enlarge, while the second and fourth partition cavities 152 and 154 shrink. Therefore, the first and third partition cavities 151 and 153 become low-pressure cavities, and the second and fourth partition cavities 152 and 154 become high-pressure cavities. The highly viscous oil needs to be squeezed from the high-pressure cavities to the low-pressure cavities. The smaller the flow channel, the greater the damping force. The greater the speed and the greater the oil pressure difference, the greater the damping force. In summary, the rotation of the rotating component 6 generates bidirectional damping.

[0066] Example 2

[0067] Unlike the fixing member 5 in Embodiment 1, in this embodiment, the fixing member 5 is sleeved inside the rotating member 6. (Not shown in the figure.)

[0068] This utility model provides a concept and method for a wind-resistant energy absorber for photovoltaic modules. Many methods and approaches exist for implementing this technical solution; the above is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A wind energy absorber for photovoltaic modules, characterized in that, include: The fastener (5) is used to connect with the photovoltaic support column (4); The rotating component (6) is rotatably sleeved with the fixed component (5) for connecting to the rotatable photovoltaic module (1); A hollow annular sealing cavity (15) is formed between the fixing member (5) and the rotating member (6); the hollow annular sealing cavity (15) is filled with a viscous liquid; At least one first partition (16) is disposed within the hollow annular sealing cavity (15) and fixedly connected to the fastener (5); At least one second partition (17) is disposed within the hollow annular sealing cavity (15) and fixedly connected to the rotating member (6); And a damping flow channel is formed on the first partition (16) and / or the second partition (17); when the rotating member (6) rotates, the viscous liquid flows through the damping flow channel to form damping on the rotating member (6).

2. The wind absorber for photovoltaic module according to claim 1, wherein, The flow channel is any one or a combination of several of the first assembly gap (181), the second assembly gap (191), the first flow hole, and the second flow hole; The first assembly gap (181) is formed between the second partition (17) and the fastener (5); The second assembly gap (191) is formed between the first partition (16) and the rotating member (6); The first flow hole is disposed through the second partition (17); The second flow passage is disposed through the first partition (16).

3. The wind absorber for photovoltaic modules according to claim 2, characterized in that, The flow channel is a combination of the first assembly gap (181) and the second assembly gap (191).

4. The wind absorber for photovoltaic module according to claim 1, wherein The first partition (16) and the second partition (17) are provided in multiples; along the circumferential direction of the rotation axis of the rotating member (6), the first partition (16) and the second partition (17) are alternately arranged at intervals.

5. The wind absorber for photovoltaic modules according to claim 4, characterized in that, The first partition (16) and the second partition (17) are evenly spaced and alternately arranged.

6. The wind absorber for photovoltaic modules according to claim 5, characterized in that, The first partition (16) and the second partition (17) divide the hollow annular sealed cavity (15) into several fan-shaped separate cavities.

7. The wind absorber for photovoltaic module according to claim 1, wherein The fixing member (5) is sleeved on the outside of the rotating member (6).

8. The wind absorber for photovoltaic modules according to claim 7, characterized in that, The rotatable photovoltaic module (1) includes a photovoltaic support tube (3) for supporting the photovoltaic panel, and the rotating part (6) is configured to be fixedly sleeved on the photovoltaic support tube (3). The photovoltaic support tube (3) is fixedly connected to the rotating part (6) and the rotatable photovoltaic module (1).

9. The wind absorber for photovoltaic module according to claim 1, wherein, The rotating component includes a sealing rotating assembly extending along the rotation axis of the rotating component (6). The sealing rotating assembly is installed at both ends of the rotating component (6). The two ends of the rotating component (6) are connected to the fixing component (5) through the sealing rotating assembly to form the hollow annular sealing cavity (15).

10. The energy absorber for wind protection of photovoltaic modules according to claim 9, characterized in that, The sealing rotation assembly includes a bearing (7) and a sealing ring (8). The bearing (7) is installed at both ends of the rotating part (6) along the rotation axis of the rotating part (6). The rotating part (6) is rotatably connected to the inner side of the fixed part (5) through the bearing (7). The sealing ring (8) is installed on the outer side of the end of the bearing (7) away from the rotating part (6).

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