An assemblable photovoltaic anti-erosion device for the sahara

Abstract

The application discloses an assemblable photovoltaic anti-erosion device for sandy and barren areas, which comprises a plurality of device monomers, the device monomers are in an accordion type telescopic structure as a whole, two groups of convex circular sand loading openings and two groups of concave fixing grooves are arranged on the outer part of the device monomers respectively, the convex structure can form a mortise and tenon joint structure with the concave fixing grooves of adjacent monomers, and the sand loading openings and the fixing grooves are internally integrated with hidden foldable handles. The device monomers are standardized and modular units, can be flexibly laid out in various combination forms such as horizontally laid double groups, horizontally laid four groups, vertically erected double groups and vertically erected four groups according to the distribution of the easy-erosion areas at the bottom and sides of photovoltaic panels and the on-site dominant wind direction, and form a continuous sand prevention barrier. The product has high structural strength, is resistant to desert and harsh environments, has flexible assembly forms, strong reusability, can radically solve the problems of wind and sand erosion of photovoltaic field area support foundations and panel bottom surfaces, has a wide application range, and has outstanding engineering practicability.

Description

Technical Field

[0001] This invention relates to the field of wind and sand protection equipment technology, and in particular to an assemblable photovoltaic anti-corrosion device for use in desert and barren areas. Background Technology

[0002] With the rapid development of the renewable energy industry, photovoltaic power generation has been widely promoted due to its advantages of being clean, efficient, and sustainable. Desert areas have become one of the core scenarios for photovoltaic power plant construction. Desert areas are generally characterized by dry climates, frequent sandstorms, loose soil, and low vegetation cover. This harsh natural environment places stringent requirements on the stability of the photovoltaic power plant's foundation structure and the safety of its long-term operation and maintenance.

[0003] Under strong winds, surface dust is easily swept up by air currents, forming sandstorms that continuously erode and scour the base of photovoltaic supports and pillars. Long-term sand erosion gradually strips away and washes away the topsoil and sand around the pillar foundations, causing problems such as thinning of the foundation topsoil, localized voids, and insufficient burial depth. This can easily lead to tilting, settlement, displacement, or even complete collapse of the photovoltaic pillars, seriously threatening the overall structural stability of the photovoltaic power station, significantly increasing the power station's operation and maintenance costs, and shortening the lifespan of the photovoltaic equipment.

[0004] Currently, the industry commonly uses traditional sand-fixing and protection measures such as grass checkerboards and fixed sand barriers to address the wind erosion problem in photovoltaic (PV) sites. These measures can, to some extent, stabilize surface sand and reduce wind erosion. However, existing protective structures have significant technical drawbacks. First, grass checkerboards and fixed sand barriers are mostly one-time installations with poor material durability and limited lifespan, requiring frequent maintenance and replacement, resulting in high operation and maintenance costs. Second, wind direction and intensity in sandy and barren areas are dynamically changing, and the areas affected by wind erosion are not fixed. Traditional protective devices, on the other hand, have fixed positions and orientations, making subsequent adjustments, relocations, and modifications difficult and costly. They cannot flexibly adapt to dynamic changes in wind and sand, resulting in poor targeting and adaptability, and making it difficult to effectively and accurately solve the problem of wind erosion of PV pillar foundations in a long-term manner.

[0005] Chinese invention patent CN 221961753 discloses a device for preventing erosion of desert photovoltaic (PV) pillars in arid and sandy areas, relating to the field of wind and sand disaster prevention. The device includes a photovoltaic panel, a photovoltaic pillar, and an anti-erosion unit. The photovoltaic panel is connected to the photovoltaic pillar, which supports the pillar on the ground. The anti-erosion unit is fitted onto the outside of the photovoltaic pillar and fixed to the ground surface. This device can improve the erosion phenomenon of PV pillars and enhance the stability of PV power plant operation. However, this technical solution only addresses the erosion prevention at the base of the photovoltaic pillar itself and does not solve the problem of long-term wind and sand erosion gradually stripping away and losing the topsoil and sand around the pillar foundation, causing thinning of the foundation topsoil, local voids, and insufficient burial depth.

[0006] In view of this, current anti-erosion protection devices for photovoltaic power plants in sandy areas have technical shortcomings such as poor adaptability, insufficient flexibility, high modification costs, and limited protection time. There is a lack of a lightweight anti-erosion protection structure that can be flexibly moved, easily disassembled and assembled, and adapted to dynamic wind and sand environments. Therefore, developing a mobile, easy-to-deploy, and highly adaptable photovoltaic anti-erosion device for sandy and barren areas has important engineering application value and practical significance. Summary of the Invention

[0007] The problem that this invention aims to solve is that current photovoltaic power station anti-erosion protection devices in sandy areas have technical shortcomings such as poor adaptability, insufficient flexibility, high modification costs, and limited protection time. There is a lack of a lightweight anti-erosion protection structure that can be flexibly moved, easily disassembled and assembled, and adapted to dynamic wind and sand environments.

[0008] To address the aforementioned technical problems, this invention provides an assemblable photovoltaic anti-corrosion device for use in desert and barren areas, comprising: at least one device unit, the device unit having an accordion-style retractable cavity structure that can be compressed and stored towards the center; a sand-filling cover and a fixing groove are symmetrically arranged on the upper and lower sides of the device unit, and a sand-filling cover and a fixing groove are also symmetrically arranged on the left and right sides of the device unit, the sand-filling cover being a protruding cover, and the fixing groove being a concave groove adapted to the sand-filling cover; foldable handles are installed on both the sand-filling cover and the fixing groove; wherein, the sand-filling cover of a single device unit is engaged with the fixing groove of another device unit to form a mortise and tenon connection structure, and multiple device units are spliced ​​together through the mortise and tenon engagement of the sand-filling cover and the fixing groove to form an overall protective assembly, the protective assembly being arranged in units of two or four units, the arrangement being adapted to the photovoltaic panel's easily corroded areas and wind direction.

[0009] According to the embodiments of this application, several device units are spliced ​​together to form an overall protective assembly through a mortise and tenon connection structure. The protective assembly is divided into a horizontally folding assembly and a vertically placed assembly. Both the horizontally folding assembly and the vertically placed assembly include two specifications: a two-unit assembly and a four-unit assembly.

[0010] According to an embodiment of this application, the device unit is a cavity structure made of plastic.

[0011] According to an embodiment of this application, the device unit is a hollow cavity structure, with a sand storage cavity formed inside for filling sand.

[0012] According to the embodiments of this application, the sand filling cover is a circular rotating sand cover, and its opening cover is a screw-on or snap-on sealing cover. The outer edge of the cover protrudes from the outer surface of the device unit, and a sealing ring is provided at the connection between the cover and the device unit to prevent the internal sand from leaking out.

[0013] According to an embodiment of this application, the fixing groove is a semi-enclosed concave groove structure. The groove depth and inner diameter match the protruding section of the circular sand-filling cover, and after snapping, it achieves radial and circumferential bidirectional limiting.

[0014] According to an embodiment of this application, the foldable handle has a hidden structure, which unfolds to be used as a single unit for handling and stretching, and folds to be hidden and stored.

[0015] According to an embodiment of this application, foldable handles are respectively installed on the inner side wall of the sand-filling cover and the bottom of the fixing groove.

[0016] According to an embodiment of this application, the device unit is composed of multiple annular pleated walls connected in sequence. The pleated walls have uniform thickness and adjacent pleats can fit together and be compressed. After complete compression, the overall length of the device unit is shortened by more than 50%.

[0017] According to an embodiment of this application, the telescopic structure of the device unit has a rectangular side surface after unfolding.

[0018] The advantages of the present invention over the prior art are:

[0019] 1. This application adopts an accordion-pleated telescopic structure, which can be compressed and reduced in volume when idle. The volume after compression is less than 50% of the unfolded state, which greatly reduces the space occupied by vehicle transportation and warehouse storage. The plastic material is lightweight and can be handled by a single person, which significantly reduces labor and logistics costs and is suitable for large-scale centralized procurement and deployment of photovoltaic projects.

[0020] 2. It adopts a pure mechanical mortise and tenon interlocking structure, requiring no auxiliary accessories. The entire assembly and disassembly process can be done by hand, resulting in high construction efficiency. After interlocking, it has bidirectional limiting, high connection strength, and the spliced ​​units will not loosen or shift, ensuring good long-term stability.

[0021] 3. Standardized units can be freely combined into various forms such as horizontal, vertical, double, and quadruple groups, and can be precisely deployed for different areas such as the bottom, sides, and wind vents of photovoltaic panels. They are suitable for various complex working conditions such as single wind direction, variable wind direction, large-area erosion, and localized point erosion. Their versatility is far superior to traditional fixed sand barriers, and their combination forms are flexible and highly adaptable to working conditions.

[0022] 4. Integrated concealed folding handle, combining stretching and handling functions; the sand filling cover is easy to open and close, and sand filling and emptying operations are convenient; counterweights can be made from locally available materials, eliminating the need for additional transport of counterweight materials. The overall structure has no complex parts, and ordinary construction workers can operate it after simple training.

[0023] 5. The main body is made of weather-resistant modified engineering plastic, which is resistant to ultraviolet rays, high and low temperatures, wind and sand abrasion, and is not easy to age and crack, making it suitable for extreme outdoor environments in deserts and Gobi. At the same time, the overall structure has no vulnerable parts, and damaged individual parts can be replaced individually, resulting in low maintenance costs.

[0024] 6. The device of this application can be repeatedly disassembled, compressed, transported and re-deployed. The sand can be stored on site or transported with the device. There are no disposable consumables, avoiding the solid waste generated after the disposal of traditional sandbags and dust nets, which meets the green and environmentally friendly construction requirements of photovoltaic projects. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a single device unit in the fully deployed state as an example of the present invention.

[0026] Figure 2 for Figure 1 Top view;

[0027] Figure 3 This is a schematic diagram of the assembly structure of two device units placed horizontally and joined by mortise and tenon joints, as an example of the present invention.

[0028] Figure 4 This is a schematic diagram illustrating the horizontally laid-down arrangement of four sets of individual devices as an example of the present invention.

[0029] The annotations in the attached figures are explained as follows:

[0030] 10. Unit; 11. Sand cover; 12. Fixing groove. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] Please see Figures 1 to 4As shown, an assemblable photovoltaic anti-erosion device for use in desert areas is illustrated. It comprises several individual device units 10. Each unit 10 adopts an accordion-style telescopic structure. The exterior of each unit 10 is equipped with two sets of protruding circular sand-filling openings and two sets of recessed fixing grooves 12. The protruding structure can form a tenon-and-mortise interlocking structure with the recessed fixing grooves 12 of adjacent units, enabling rapid assembly and positioning of multiple units without the need for additional fasteners. Hidden foldable handles are integrated inside the sand-filling openings and fixing grooves 12. When unfolded, the handles allow for unit handling and the extension / retraction of the telescopic structure; when folded, they are completely embedded without interfering with assembly or retraction. This unit 10 is a standardized modular unit. After being filled with sand for weight, it can be flexibly assembled and deployed in various combinations, such as horizontally laid down two units, horizontally laid down four units, vertically erected two units, or vertically erected four units, based on the distribution of easily eroded areas on the bottom and sides of the photovoltaic panels and the prevailing wind direction, to form a continuous sand barrier. This product boasts high structural strength, resistance to harsh desert environments, flexible assembly, and strong reusability. It effectively blocks wind and sand flow, reduces near-surface wind speed, and fundamentally solves the problem of wind and sand erosion on the foundation and bottom of photovoltaic panels. It has a wide range of applications and outstanding engineering practicality.

[0033] In this embodiment, an assemblable photovoltaic anti-erosion device for use in desert areas includes at least one device unit 10. The device unit 10 has an accordion-style retractable cavity structure that can be compressed and stored towards the center. A sand-filling cover 11 and a fixing groove 12 are symmetrically arranged on the upper and lower sides of the device unit 10, and a sand-filling cover 11 and a fixing groove 12 are also symmetrically arranged on the left and right sides of the device unit 10. The sand-filling cover 11 is a protruding cover, and the fixing groove 12 is a concave groove that fits the sand-filling cover 11. The sand-filling cover 11 has both sand-filling and sand-discharging functions. Foldable handles are installed on both the sand-filling cover 11 and the fixing groove 12.

[0034] Specifically, the device unit 10 is composed of multiple annular pleated walls connected sequentially. The pleated walls have uniform thickness, and adjacent pleats can be compressed together. After full compression, the overall length of the device unit 10 is shortened by more than 50%. When the device unit 10 is idle, it can be compressed axially towards the center, significantly reducing the overall space occupied and lowering storage, transfer, and handling costs.

[0035] Specifically, the device unit 10 is a cavity structure made of plastic. Preferably, the device unit 10 is made of weather-resistant modified engineering plastic, which has the characteristics of UV resistance, high and low temperature resistance, wind and sand abrasion resistance, and aging resistance, and is suitable for long-term outdoor use in desert and Gobi environments.

[0036] Specifically, the device unit 10 has a hollow cavity structure, forming a sand storage cavity inside for filling sand. The main body sidewall of the device unit 10 is designed with an accordion-style continuous pleated structure, and the side is rectangular.

[0037] Specifically, the two sand-filling covers 11 can be divided into an upper sand-filling cover 11 and a side sand-filling cover 11 according to the placement posture of the device. Whether placed horizontally or vertically, they can easily complete the sand-filling and sand-discharging operations. At the same time, the sand-filling cover 11 protrudes outward as a whole, and this protruding structure is also the core matching structure for subsequent assembly and positioning.

[0038] Specifically, the sand-filling cover 11 is a circular rotating sand cover with a screw-on or snap-on sealing cap. The outer edge of the cover protrudes from the outer surface of the device unit 10. A sealing ring is provided at the connection between the cover and the device unit 10 to prevent the internal sand from leaking out. The sand-filling cover 11 serves two purposes: first, during on-site deployment, the cover is opened to fill the cavity with locally sourced sand, using the weight of the sand to lift the overall counterweight of the device and enhance its resistance to wind overturning; second, during equipment recovery and relocation, the cover is opened to empty the internal sand, reducing the weight during handling.

[0039] Specifically, corresponding to the positions of the two sand-filling covers 11, two concave fixing grooves 12 are symmetrically arranged on the device unit 10. The fixing grooves 12 are semi-enclosed grooves, and the inner diameter, depth, and contour of the grooves perfectly match the protruding sections of the sand-filling covers 11. When multiple sets of device units 10 are used in combination, the protruding sand-filling cover 11 of the first unit is inserted into the concave fixing groove 12 of the adjacent second unit. The radial limiting, circumferential limiting, and axial anti-dislodgement are achieved by the enveloping effect of the grooves, forming a rigid connection similar to a tenon and mortise joint. This connection method does not require additional fasteners such as wires, cable ties, and bolts. A single person can quickly complete the assembly and disassembly. The connection is firm and can withstand the impact of strong desert winds. After assembly, the whole unit will not be misaligned or loose.

[0040] Specifically, a foldable, hinged handle is embedded on the inner side of each sand-filling cover 11 and at the bottom of each fixing slot 12. The handle is a concealed design, folding completely inside the cavity / slot in normal operation, with a flat surface that does not interfere with the compression of the device's folds or the interlocking of individual units. The handle has two core functions: First, after the device is compressed and stored, pulling outwards via the handle easily unfolds the stacked accordion folds, restoring it to its working form; second, during deployment, relocation, and retrieval, unfolding the handle allows for easy gripping and handling of individual units, improving ease of manual operation and reducing labor intensity.

[0041] In this embodiment, the sand-filling cover 11 of a single device unit 10 is engaged with the fixing groove 12 of another device unit 10 to form a mortise and tenon connection structure. Multiple device units 10 are spliced ​​together by the mortise and tenon engagement of the sand-filling cover 11 and the fixing groove 12 to form an overall protective assembly. The protective assembly is arranged in units of two or four units, and the arrangement is adapted to the photovoltaic panel's easily corroded areas and wind direction.

[0042] Specifically, several individual devices 10 are spliced ​​together to form an overall protective assembly through a mortise and tenon joint structure. The protective assembly is divided into a horizontally folding assembly and a vertically placed assembly. Both the horizontally folding assembly and the vertically placed assembly include two specifications: a two-unit assembly and a four-unit assembly.

[0043] Specifically, the deployment orientation of the 10 individual units and the number of units assembled in each group are adaptively selected based on the location and extent of the easily eroded areas of the photovoltaic panels in the desert photovoltaic field, as well as the real-time wind direction and sandstorm intensity. In actual projects, staff select the combination form based on three main conditions: ① the specific location and area of ​​the easily eroded areas of the photovoltaic panels; ② the prevailing and secondary wind directions of the field; ③ the real-time sandstorm intensity. Flexible combinations of horizontal, vertical, double-unit, and quadruple-unit structures can be used to construct various integrated sand-proof systems, such as straight lines, corner types, and segmented structures, to comprehensively cover the protected area.

[0044] In this embodiment, an assemblable photovoltaic anti-erosion device for use in desert and barren areas achieves its anti-erosion function through self-weight counterweight, modular combination, and physical sand blocking. Its usage process is as follows:

[0045] 1. Transportation and storage stage: The device unit 10 is compressed along the axial direction, the accordion pleats fit together, the volume is greatly reduced, and it is transported in batches to the construction site;

[0046] 2. Sand filling stage: Pull out the folding handle, stretch the compressed unit to the working length, open the sand filling cover 11, and fill the hollow cavity with sand. Use the weight of the sand to increase the weight of the unit and improve wind resistance stability.

[0047] 3. Assembly and deployment stage: Based on the wind direction and erosion area, select the horizontal / vertical orientation and the number of units to be assembled in each group. Using the mortise and tenon structure of the sand cover 11 and the fixing groove 12, multiple units are sequentially snapped together to form a continuous sand barrier.

[0048] 4. Protection Operation Phase: The assembled device array blocks near-surface wind and sand flow, reduces surface wind speed, and prevents high-speed wind and sand from continuously eroding the soil around the photovoltaic support, thus preventing erosion and subsidence.

[0049] 5. Recycling and Reuse Phase: After the protection period ends, disassemble the mortise and tenon connection structure, open the sand filling cover 11 to pour out the sand, fold the handle, compress the unit volume again, and transfer it to the next area for reuse.

[0050] Example 1: Horizontal Layout of Anti-Erosion Device

[0051] Application scenario: The long, easily corroded area at the bottom of the photovoltaic panel, where the prevailing wind direction is parallel to the panel's arrangement. Specific steps are as follows:

[0052] 1) Stretch out the individual device unit 10, fill it with sand, and then close the sand-filling cover 11;

[0053] 2) Select two units, lay them horizontally, align the protruding sand-filling cover 11 of the first unit with the concave fixing groove 12 of the second unit, push them horizontally to complete the tenon and mortise engagement, forming a horizontal double-unit assembly, and place them continuously along the bottom of the photovoltaic panel to form the first sand-proof barrier.

[0054] 3) For areas with larger erosion range and stronger wind and sand, four individual units are selected and connected in sequence to form four horizontal groups of combined bodies, which widens the protection width and improves the sand blocking effect.

[0055] 4) The entire assembly is laid out along the bottom of the photovoltaic panel to block the horizontal wind and sand flow from eroding the ground surface.

[0056] Example 2: Vertical and upright combination of anti-erosion devices

[0057] Application scenario: Side wind vents of photovoltaic power plants, and vertical erosion areas on both sides of photovoltaic panels, where the prevailing wind direction is perpendicular to the photovoltaic panel arrangement direction. Specific steps are as follows:

[0058] 1) After the individual units are unfolded, filled with sand and sealed, they are placed vertically.

[0059] 2) Two individual units are arranged vertically side by side and are sequentially engaged with the sand-filling cover 11 and the fixing groove 12 to form a vertical double-unit assembly, which is arranged on the side of the photovoltaic panel to block the intrusion of lateral wind and sand.

[0060] 3) The main wind gap in the site has strong wind and sand intensity, so four vertically assembled groups are used to form a vertical long wall-type sand barrier to enhance the wind protection effect;

[0061] 4) Multiple sets of vertical composite structures are arranged at intervals to form a multi-level wind protection system, gradually reducing the wind speed of sand and dust flow.

[0062] In summary, the technical solution of this application has the following beneficial effects:

[0063] 1. This application adopts an accordion-pleated telescopic structure, which can be compressed and reduced in volume when idle. The volume after compression is less than 50% of the unfolded state, which greatly reduces the space occupied by vehicle transportation and warehouse storage. The plastic material is lightweight and can be handled by a single person, which significantly reduces labor and logistics costs and is suitable for large-scale centralized procurement and deployment of photovoltaic projects.

[0064] 2. It adopts a pure mechanical mortise and tenon interlocking structure, requiring no auxiliary accessories. The entire assembly and disassembly process can be done by hand, resulting in high construction efficiency. After interlocking, it has bidirectional limiting, high connection strength, and the spliced ​​units will not loosen or shift, ensuring good long-term stability.

[0065] 3. Standardized units can be freely combined into various forms such as horizontal, vertical, double, and quadruple groups, and can be precisely deployed for different areas such as the bottom, sides, and wind vents of photovoltaic panels. They are suitable for various complex working conditions such as single wind direction, variable wind direction, large-area erosion, and localized point erosion. Their versatility is far superior to traditional fixed sand barriers, and their combination forms are flexible and highly adaptable to working conditions.

[0066] 4. Integrated concealed folding handle, combining stretching and handling functions; the sand filling cover is easy to open and close, and sand filling and emptying operations are convenient; counterweights can be made from locally available materials, eliminating the need for additional transport of counterweight materials. The overall structure has no complex parts, and ordinary construction workers can operate it after simple training.

[0067] 5. The main body is made of weather-resistant modified engineering plastic, which is resistant to ultraviolet rays, high and low temperatures, wind and sand abrasion, and is not easy to age and crack, making it suitable for extreme outdoor environments in deserts and Gobi. At the same time, the overall structure has no vulnerable parts, and damaged individual parts can be replaced individually, resulting in low maintenance costs.

[0068] 6. The device of this application can be repeatedly disassembled, compressed, transported and re-deployed. The sand can be stored on site or transported with the device. There are no disposable consumables, avoiding the solid waste generated after the disposal of traditional sandbags and dust nets, which meets the green and environmentally friendly construction requirements of photovoltaic projects.

[0069] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. An assemblable photovoltaic anti-corrosion device for use in desert areas, characterized in that, include: At least one device unit, wherein the device unit has an accordion-style retractable cavity structure that can be compressed and stored towards the center; the device unit is symmetrically provided with a sand-filling cover and a fixing groove on its upper and lower sides, and also symmetrically provided with a sand-filling cover and a fixing groove on its left and right sides; the sand-filling cover is a protruding cover, and the fixing groove is a concave groove adapted to the sand-filling cover; both the sand-filling cover and the fixing groove are equipped with foldable handles; In this device, the sand-filling cover of a single device unit is engaged with the fixing groove of another device unit to form a mortise and tenon connection structure. Multiple device units are spliced ​​together by the mortise and tenon engagement of the sand-filling cover and the fixing groove to form an overall protective assembly. The protective assembly is arranged in units of two or four units, and the arrangement is adapted to the photovoltaic panel's easily corroded areas and wind direction.

2. The assemblable photovoltaic anti-corrosion device for use in desert areas according to claim 1, characterized in that, Several of the device units are assembled into an overall protective assembly through a mortise and tenon joint structure. The protective assembly is divided into a horizontally folding assembly and a vertically placed assembly. Both the horizontally folding assembly and the vertically placed assembly include two specifications: a two-unit assembly and a four-unit assembly.

3. The assemblable photovoltaic anti-corrosion device for use in desert areas according to claim 1, characterized in that, The device is a cavity structure made of plastic.

4. The assemblable photovoltaic anti-corrosion device for use in desert areas according to claim 1, characterized in that, The device is a hollow cavity structure with a sand storage cavity inside for filling sand.

5. The assemblable photovoltaic anti-corrosion device for use in desert areas according to claim 1, characterized in that, The sand-filling cover is a circular rotating sand cover, and its opening is a screw-on or snap-on sealing cover. The outer edge of the cover protrudes from the outer surface of the device unit. A sealing ring is provided at the connection between the cover and the device unit to prevent the internal sand from leaking out.

6. The assemblable photovoltaic anti-corrosion device for use in desert areas according to claim 5, characterized in that, The fixing groove is a semi-enclosed concave groove structure. The groove depth and inner diameter match the protruding section of the circular sand-filling cover, and after snapping, it achieves radial and circumferential bidirectional limiting.

7. The assemblable photovoltaic anti-corrosion device for use in desert areas according to claim 1, characterized in that, The foldable handle has a hidden structure; when unfolded, it is used for carrying and stretching the device unit, and when folded, it is hidden for storage.

8. The assemblable photovoltaic anti-corrosion device for use in desert areas according to claim 7, characterized in that, The foldable handles are respectively installed on the inner side wall of the sand-filling cover and the bottom of the fixing groove.

9. The assemblable photovoltaic anti-corrosion device for use in desert areas according to claim 1, characterized in that, The device unit is composed of multiple annular pleated walls connected in sequence. The pleated walls have uniform thickness and adjacent pleats can fit together and be compressed. After complete compression, the overall length of the device unit is shortened by more than 50%.

10. An assemblable photovoltaic anti-corrosion device for use in desert areas according to claim 1, characterized in that, The telescopic structure of the device unit has a rectangular side when unfolded.

Images