Cleaning device for photovoltaic power station in desert region

Abstract

The invention discloses a cleaning device for a photovoltaic power station in a desert region, which comprises a support frame, a photovoltaic panel, a first track, a second track, a first rotating shaft, a cleaning roller, a lead screw nut, a bidirectional lead screw and a wind power rotating component, the two ends of the first rotating shaft are movably connected with the first track and the second track in the second direction respectively, the cleaning roller is arranged on the rotating shaft and used for cleaning the photovoltaic panel, the bidirectional lead screw is rotationally arranged on the photovoltaic panel, and the bidirectional lead screw is in spiral fit with the lead screw nut; the wind power rotating component is in transmission connection with the bidirectional lead screw and used for driving the bidirectional lead screw to rotate through wind power. According to the invention, it can be ensured that the surface of the photovoltaic panel is clean, the power generation efficiency of a photovoltaic power station is improved, erosion of dust to the photovoltaic module can be reduced, the aging speed of the module is reduced, and the service life of the photovoltaic module is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic power generation, and in particular to a cleaning device for a photovoltaic power station in a desert area. Background Art

[0002] With the transformation of the global energy structure and the rapid development of renewable energy, photovoltaic power generation, as a clean and renewable energy form, has been widely used in my country and even around the world. Especially in desert areas, due to its abundant light resources and vast land resources, it has become an important area for the construction of photovoltaic power stations. However, the natural environment characteristics of desert areas have brought many challenges to the operation and maintenance of photovoltaic power stations. The dry climate and strong winds and sand in desert areas make it easy for dust and sand to accumulate on the surface of photovoltaic modules, which not only reduces the power generation efficiency of photovoltaic power stations, but also may accelerate the aging of modules and shorten their service life. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a cleaning device for a photovoltaic power station in a desert area.

[0005] The cleaning device for a photovoltaic power station in a desert area according to an embodiment of the present invention comprises a support frame, a photovoltaic panel, a first track, a second track, a first rotating shaft, a cleaning roller, a screw nut, a bidirectional screw and a wind rotating component, wherein the photovoltaic panel is tilted on the support frame; the first track and the second track are arranged at intervals on both sides of the photovoltaic panel along the first direction, and the first track and the second track both extend along the second direction; the two ends of the first rotating shaft are movably connected to the first track and the second track respectively along the second direction, and the cleaning roller is arranged on the rotating shaft for cleaning the photovoltaic panel; the screw nut is rotatably arranged on the first rotating shaft; the bidirectional screw is rotatably arranged on the photovoltaic panel and extends along the second direction, and the bidirectional screw is spirally matched with the screw nut; the wind rotating component is connected to the bidirectional screw transmission for driving the bidirectional screw to rotate by using wind force, wherein the first direction, the second direction and the thickness direction of the photovoltaic panel are perpendicular to each other.

[0006] In some embodiments, a first slide groove is provided on the first rail, and the first slide groove extends along the second direction; a second slide groove is provided on the second rail, and the second slide groove extends along the second direction; both ends of the first rotating shaft can slideably cooperate with the first slide groove and the second slide groove respectively, and the first rotating shaft can rotate relative to the first rail and the second rail.

[0007] In some embodiments, it further includes a rack and a gear, wherein the rack is disposed on the photovoltaic panel and extends along the second direction, and the gear is mounted on the rotating shaft and meshes with the rack.

[0008] In some embodiments, there is a wind passage below the photovoltaic panel, and the wind rotating component is arranged in the wind passage.

[0009] In some embodiments, the wind rotating component includes a column, a second rotating shaft and blades. The second rotating shaft is rotatably disposed on the column. The extension direction of the second rotating shaft is parallel to the ventilation direction of the air passage. The blades are disposed on the second rotating shaft. The second rotating shaft is connected to the bidirectional screw transmission. The rotation of the second rotating shaft can drive the rotation of the bidirectional screw.

[0010] In some embodiments, a driving pulley is disposed on the second rotating shaft, a driven pulley is disposed on the bidirectional lead screw, and a transmission belt is disposed between the driving pulley and the driven pulley.

[0011] In some embodiments, the cleaning device for a photovoltaic power station in a desert area according to an embodiment of the present invention further includes a partition, which is arranged below the photovoltaic panel and connected to the support frame. The partition is arranged horizontally, and one end of the partition is connected to the bottom end of the photovoltaic panel.

[0012] In some embodiments, the partition is provided with a plurality of air holes arranged at intervals, the plurality of air holes are divided into a plurality of hole groups, the plurality of hole groups are arranged at intervals along the ventilation direction of the air channel, and each of the hole groups includes a plurality of air holes arranged at intervals along the second direction.

[0013] In some embodiments, the diameter of each of the air holes in the hole group is the same.

[0014] In some embodiments, the diameters of the air holes in the hole group gradually decrease in a direction toward the bottom end of the photovoltaic panel.

[0015] The cleaning device for a photovoltaic power station in a desert area according to an embodiment of the present invention utilizes wind energy in the desert area as a power source to realize automatic cleaning of the photovoltaic power station, effectively reducing the reliance on manual cleaning and reducing labor costs. By regularly removing dust and sand from the surface of the photovoltaic panel, the present invention can ensure the cleanliness of the photovoltaic panel surface and improve the power generation efficiency of the photovoltaic power station. At the same time, it can also reduce the erosion of the photovoltaic module by sand and dust, reduce the aging rate of the module, and help extend the service life of the photovoltaic module. In addition, the use of renewable energy wind energy for cleaning does not require additional energy input, thereby reducing long-term operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1Schematic diagram of the structure of a cleaning device according to an embodiment of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the cleaning device of an embodiment of the present invention from another perspective.

[0018] Figure 3 2 is a side view of a cleaning device according to an embodiment of the present invention.

[0019] Figure 4 2 is a front view of a cleaning device according to an embodiment of the present invention.

[0020] Figure 5 2 is a top view of a cleaning device according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] 1. Support frame; 2. Photovoltaic panel; 3. First track; 301. First slide; 4. Second track; 401. Second slide; 5. First rotating shaft; 6. Cleaning roller; 7. Screw nut; 8. Bidirectional screw; 9. Wind rotating component; 901. Column; 902. Second rotating shaft; 903. Blade; 10. Rack; 11. Gear; 12. Wind passage; 13. Driving pulley; 14. Driven pulley; 15. Transmission belt; 16. Partition; 1601. Wind hole. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0024] like Figures 1 to 5 As shown, the cleaning device for a photovoltaic power station in a desert area according to an embodiment of the present invention comprises a support frame 1, a photovoltaic panel 2, a first track 3, a second track 4, a first rotating shaft 5, a cleaning roller 6, a lead screw nut 7, a bidirectional lead screw 8 and a wind rotating component 9. The photovoltaic panel 2 is tilted on the support frame 1, and the first track 3 and the second track 4 are arranged at intervals on both sides of the photovoltaic panel 2 along the first direction, and the first track 3 and the second track 4 both extend along the second direction. The two ends of the first rotating shaft 5 are movably connected to the first track 3 and the second track 4 respectively along the second direction, and the cleaning roller 6 is arranged on the rotating shaft for cleaning the photovoltaic panel 2. The lead screw nut 7 is rotatably arranged on the first rotating shaft 5, and the bidirectional lead screw 8 is rotatably arranged on the photovoltaic panel 2 and extends along the second direction, and the bidirectional lead screw 8 is spirally matched with the lead screw nut 7. The wind rotating component 9 is transmission-connected to the bidirectional lead screw 8, and is used to drive the bidirectional lead screw 8 to rotate by using wind force, wherein the first direction, the second direction and the thickness direction of the photovoltaic panel 2 are perpendicular to each other. For example, as Figure 1 As shown, the first direction is the length direction of the photovoltaic panel 2, and the second direction is the width direction of the photovoltaic panel.

[0025] When the cleaning device for a photovoltaic power station in a desert area according to the embodiment of the present invention is in use, the wind-driven rotating component 9 is connected to the bidirectional screw 8 by transmission, and the wind in the desert area is used to drive the bidirectional screw 8 to rotate. The bidirectional screw 8 is rotatably arranged on the photovoltaic panel 2 and is screw-matched with the screw nut 7. When the bidirectional screw 8 rotates, it can drive the screw nut 7 to reciprocate in the second direction, and the screw nut 7 drives the first rotating shaft 5 to reciprocate in the extending direction of the first track 3 and the second track 4. The cleaning roller 6 is located on the first rotating shaft 5, and the second rotating shaft 902 drives the cleaning roller 6 to reciprocate in the second direction to achieve the cleaning effect on the photovoltaic panel 2.

[0026] The cleaning device for a photovoltaic power station in a desert area according to an embodiment of the present invention utilizes wind energy in a desert area as a power source to realize automatic cleaning of the photovoltaic power station, effectively reducing the reliance on manual cleaning and reducing labor costs. By regularly removing dust and sand from the surface of the photovoltaic panel 2, the present invention can ensure the cleanliness of the surface of the photovoltaic panel 2, improve the power generation efficiency of the photovoltaic power station, and at the same time reduce the erosion of the photovoltaic module by sand and dust, reduce the aging rate of the module, and help extend the service life of the photovoltaic module. In addition, the use of renewable energy wind energy for cleaning does not require additional energy input, thereby reducing long-term operating costs.

[0027] In some embodiments, a first slide groove 301 is provided on the first track 3, and the first slide groove 301 extends along the second direction. A second slide groove 401 is provided on the second track 4, and the second slide groove 401 extends along the second direction. Both ends of the first rotating shaft 5 are slidably matched with the first slide groove 301 and the second slide groove 401, respectively, and the first rotating shaft 5 is rotatable relative to the first track 3 and the second track 4.

[0028] That is to say, the first rotating shaft 5 can not only slide but also rotate relative to the first track 3 and the second track 4. Since the first rotating shaft 5 can rotate, the cleaning roller 6 can maintain a certain rotation during the movement on the surface of the photovoltaic panel 2. Such rotation can help remove dust and sand that are more closely attached to the surface of the photovoltaic panel 2, thereby improving the cleaning efficiency. The design of the chute increases the guiding property of the rotating shaft during the movement, making the movement of the cleaning roller 6 more stable and precise, and reducing uneven cleaning caused by wind fluctuations and other reasons. The presence of the chute can reduce the direct friction between the rotating shaft and the track, reduce wear, and extend the service life of the device.

[0029] In some embodiments, the cleaning device for a photovoltaic power station in a desert area according to an embodiment of the present invention further includes a rack 10 and a gear 11 . The rack 10 is disposed on the photovoltaic panel 2 and extends along the second direction. The gear 11 is mounted on the rotating shaft and meshes with the rack 10 .

[0030] like Figure 1 and Figure 4As shown, the gear 11 is mounted on the first rotating shaft 5 and meshes with the rack 10. When the first rotating shaft 5 reciprocates in the second direction, the gear 11 drives the first rotating shaft 5 to rotate due to the action of the rack 10, thereby driving the rotating shaft and the cleaning roller 6 to rotate while moving. The combination of the rack 10 and the gear 11 provides precise motion control, ensuring that the cleaning roller 6 can move according to a predetermined path and speed, thereby improving the cleaning efficiency.

[0031] In some embodiments, a wind passage 12 is provided below the photovoltaic panel 2 , and the wind rotating component 9 is disposed in the wind passage 12 .

[0032] like Figure 1 and Figure 4 As shown, the wind rotating component 9 is installed in the wind passage 12, and the accelerated wind flow in the passage is used to drive the rotating component, thereby converting wind energy into mechanical energy. When wind blows through the wind passage 12, due to the specific design of the passage, an accelerated flow will be formed around the wind rotating component 9, thereby improving the utilization efficiency of wind energy.

[0033] In some embodiments, Figure 1 , Figure 3 and Figure 4 As shown, the wind rotating component 9 includes a column 901, a second rotating shaft 902 and blades 903. The second rotating shaft 902 is rotatably disposed on the column 901. The extension direction of the second rotating shaft 902 is parallel to the ventilation direction of the air passage 12. The blades 903 are disposed on the second rotating shaft 902. The second rotating shaft 902 is transmission-connected to the bidirectional screw 8. The rotation of the second rotating shaft 902 can drive the bidirectional screw 8 to rotate.

[0034] The wind-driven rotating component 9 of the cleaning device for a photovoltaic power station in a desert area according to the embodiment of the present invention has a simple structure and can adapt to various wind conditions. Even under weak wind conditions, the working efficiency of the wind-driven rotating component 9 can be optimized through the specific design of the wind passage 12.

[0035] In some embodiments, a driving pulley 13 is provided on the second rotating shaft 902 , a driven pulley 14 is provided on the bidirectional lead screw 8 , and a transmission belt 15 is provided between the driving pulley 13 and the driven pulley 14 .

[0036] The driving pulley 13 is mounted on the second rotating shaft 902. When the second rotating shaft 902 rotates, the driving pulley 13 also rotates. The rotation of the driving pulley 13 is transmitted to the driven pulley 14 through the transmission belt 15, so that the bidirectional screw 8 rotates to achieve the reciprocating motion of the cleaning roller 6. The introduction of the transmission belt 15 and the pulley system improves the efficiency of power transmission and reduces energy loss. By selecting a suitable pulley diameter ratio, a precise transmission ratio can be achieved, thereby controlling the movement speed and stroke of the cleaning roller 6.

[0037] In some embodiments, the cleaning device for a photovoltaic power station in a desert area of ​​the embodiment of the present invention also includes a partition 16, which is arranged below the photovoltaic panel 2 and connected to the support frame 1. The partition 16 is arranged horizontally, and one end of the partition 16 is connected to the bottom end of the photovoltaic panel 2.

[0038] like Figure 2 , Figure 3 and Figure 5 As shown, a wind passage 12 is formed below the partition 16. Since the partition 16 is arranged horizontally, the cross section of the wind passage 12 is equal everywhere. When the wind blows through the wind passage 12, the phenomenon of flow collection acceleration and vortex flow will not be formed at the bottom of the photovoltaic panel 2, which can avoid the occurrence of erosion below the photovoltaic panel 2, and further avoid the pillars of the support frame 1 from being exposed to the ground due to erosion by the wind and sand flow, effectively ensuring the structural stability of the photovoltaic power station 100.

[0039] In some embodiments, a plurality of air holes 1601 are arranged at intervals on the partition 16, and the plurality of air holes 1601 are divided into a plurality of hole groups. The plurality of hole groups are arranged at intervals along the ventilation direction of the air channel 12, and each hole group includes a plurality of air holes 1601 arranged at intervals along the second direction.

[0040] like Figure 2 and Figure 5 As shown, the setting of the air hole 1601 can reduce the resistance of wind to the partition 16 and the photovoltaic panel 2, so that the wind can smoothly pass through the air hole 1601 on the partition 16 into the air passage 12, and then flow out from the air passage 12, thereby reducing the pressure on the overall structure of the photovoltaic power station. Therefore, through the design of the air hole 1601, the wind load can be effectively reduced, and the damage to the power station structure caused by excessive wind force can be reduced. The air hole 1601 can guide the wind flow and change the direction of the wind, thereby reducing the direct impact of the wind on the photovoltaic panel 2 and the column 901. The air hole 1601 can also help the photovoltaic power station to dissipate heat better, keep the temperature of the power station within a reasonable range, and help to extend the service life of the photovoltaic panel 2 and other electronic equipment.

[0041] The photovoltaic power station of the embodiment of the present invention can optimize the wind flow more effectively by grouping the wind holes 1601. Each hole group can serve as an independent wind flow regulation unit to adjust the path and speed of the wind flow as needed. The grouping design allows engineers to flexibly adjust the size, position and number of hole groups according to specific environmental conditions and power station layout requirements to achieve optimal wind flow management and structural stability. The wind holes 1601 in each hole group can reduce the wind load in the local area, thereby reducing the pressure on the partition 16 and protecting the power station structure from wind damage. The grouped design of the wind holes 1601 helps prevent the accumulation of sand and dust in specific areas of the partition 16. By adjusting the arrangement and size of the wind holes 1601 in the hole group, the direction and speed of the wind flow can be controlled to achieve more effective wind flow dispersion and pressure reduction.

[0042] Optionally, multiple air holes 1601 are evenly or unevenly arranged on the first partition 16. These holes can be round, square or other shapes, depending on the design needs and functional requirements. The size and number of the air holes 1601 can be adjusted according to the wind speed, wind direction and dust conditions at the location of the photovoltaic power station to ensure the best protection effect. The interval arrangement of the air holes 1601 can optimize the path of the wind flow through the partition 16 and reduce the impact on the photovoltaic power station.

[0043] In some embodiments, the diameters of each air hole 1601 in the hole group are the same.

[0044] The uniform diameter design simplifies the design and manufacturing process of the partition 16, reducing production costs and complexity. The same diameter of the air holes 1601 can ensure that the airflow passes through the partition 16 more evenly, avoiding uneven airflow distribution caused by different hole diameters. The uniform size of the air holes 1601 is more convenient for cleaning and maintenance, because all holes are of the same size and can be operated with standardized tools.

[0045] In some embodiments, the diameter of the air holes 1601 in the hole group gradually decreases in a direction toward the bottom end of the photovoltaic panel 2 .

[0046] like Figure 5 As shown, in the hole group, the reduction of the aperture can be linear, exponential or in other mathematical function forms, so that engineers can adjust it according to actual needs. As the aperture gradually decreases, the wind flow will be accelerated to a certain extent when passing through the hole group, which helps to guide the direction of the wind flow and reduce the direct impact on the photovoltaic panel 2. The gradual reduction of the aperture helps to optimize the airflow inside the photovoltaic power station, so that the wind can pass through the entire power station more smoothly and reduce the accumulation of wind and sand.

[0047] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cleaning device for a photovoltaic power station in a desert area, characterized in that: include: Support frame; A photovoltaic panel, wherein the photovoltaic panel is tiltedly arranged on the support frame; A first track and a second track, wherein the first track and the second track are arranged at intervals on both sides of the photovoltaic panel along a first direction, and the first track and the second track both extend along a second direction; A first rotating shaft and a cleaning roller, wherein two ends of the first rotating shaft are movably connected to the first track and the second track respectively along the second direction, and the cleaning roller is arranged on the rotating shaft for cleaning the photovoltaic panel; A lead screw nut, the lead screw nut being rotatably disposed on the first rotating shaft; A bidirectional lead screw, the bidirectional lead screw is rotatably disposed on the photovoltaic panel and extends along the second direction, the bidirectional lead screw is spirally matched with the lead screw nut; A wind-driven rotating component is connected to the bidirectional screw transmission and is used to utilize wind power to drive the bidirectional screw to rotate, wherein the first direction, the second direction and the thickness direction of the photovoltaic panel are perpendicular to each other.

2. The cleaning device for a photovoltaic power station in a desert area according to claim 1, characterized in that: A first slide groove is provided on the first track, and the first slide groove extends along the second direction. A second slide groove is provided on the second track, and the second slide groove extends along the second direction. Both ends of the first rotating shaft can slide with the first slide groove and the second slide groove respectively, and the first rotating shaft can rotate relative to the first track and the second track.

3. The cleaning device for a photovoltaic power station in a desert area according to claim 2, characterized in that: It also includes a rack and a gear, wherein the rack is disposed on the photovoltaic panel and extends along the second direction, and the gear is mounted on the rotating shaft and meshes with the rack.

4. The cleaning device for a photovoltaic power station in a desert area according to claim 1, characterized in that: A wind passage is provided below the photovoltaic panel, and the wind force rotating component is arranged in the wind passage.

5. The cleaning device for a photovoltaic power station in a desert area according to claim 4, characterized in that: The wind rotating component includes a column, a second rotating shaft and blades. The second rotating shaft is rotatably arranged on the column. The extension direction of the second rotating shaft is parallel to the ventilation direction of the air passage. The blades are arranged on the second rotating shaft. The second rotating shaft is connected to the bidirectional screw transmission. The rotation of the second rotating shaft can drive the rotation of the bidirectional screw.

6. The cleaning device for a photovoltaic power station in a desert area according to claim 5, characterized in that: A driving pulley is arranged on the second rotating shaft, a driven pulley is arranged on the bidirectional lead screw, and a transmission belt is arranged between the driving pulley and the driven pulley.

7. The cleaning device for a photovoltaic power station in a desert area according to claim 1, characterized in that: It also includes a partition, which is arranged below the photovoltaic panel and connected to the support frame. The partition is arranged horizontally, and one end of the partition is connected to the bottom end of the photovoltaic panel.

8. The cleaning device for a photovoltaic power station in a desert area according to claim 7, characterized in that: The partition is provided with a plurality of air holes arranged at intervals, the plurality of air holes are divided into a plurality of hole groups, the plurality of hole groups are arranged at intervals along the ventilation direction of the air passage, and each of the hole groups includes a plurality of air holes arranged at intervals along the second direction.

9. The cleaning device for a photovoltaic power station in a desert area according to claim 8, characterized in that: The diameters of each of the air holes in the hole group are the same.

10. The cleaning device for a photovoltaic power station in a desert area according to claim 9, characterized in that: The diameters of the air holes in the hole group gradually decrease in a direction toward the bottom end of the photovoltaic panel.

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