A photovoltaic column sand compression device, a photovoltaic column unit and a photovoltaic sand control system
By setting up a gravel covering layer with decreasing height around the photovoltaic pillar, the problem of wind and sand erosion of the photovoltaic pillar in desert areas is solved, the stability of the pillar and the safety of the power station are improved, and the maintenance cost is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA HUADIAN TENGGER GREEN ENERGY CO LTD BAYANHOT PHOTOVOLTAIC BRANCH
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-14
AI Technical Summary
Photovoltaic pillars are susceptible to erosion from wind and sand in desert areas, which affects the safety and stability of the power station. Existing technologies lack effective protective measures.
The sand around the photovoltaic pillar is covered by first and second sand-stabilizing structures. The height of the first sand-stabilizing structure decreases, while the height of the second sand-stabilizing structure is constant. The two structures partially overlap, and the covering layer is formed by piling up gravel of different particle sizes. The design is simple and economical.
It effectively isolates wind and sand from contacting the bottom of the column, reduces wind speed, prevents erosion, improves column stability, reduces maintenance frequency and cost, and ensures long-term stable operation of the power station.
Smart Images
Figure CN224495077U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wind and sand disaster prevention, and in particular to a photovoltaic column sand-pressing device, a photovoltaic column unit, and a photovoltaic sand control system. Background Technology
[0002] Desert regions possess advantages such as vast territory and abundant sunshine resources, providing a foundation for the development of the photovoltaic industry. However, photovoltaic power stations in desert areas face severe problems such as wind and sand erosion and sand hollowing. This is mainly due to the unique climatic conditions and natural environment of the region, such as aridity, scarce rainfall, high evaporation, water shortage, lack of plant species, and frequent wind and sand activity. The photovoltaic pillars are constantly disturbed by wind and sand, making them prone to erosion around them, which can even affect the operational safety of the entire photovoltaic power station in severe cases. Currently, most existing devices focus on improving the load-bearing capacity of the photovoltaic pillars and the design of the supporting structure, with few protective measures for the photovoltaic pillars against wind and sand disturbance. The photovoltaic pillars are directly exposed and are mostly cylindrical. When wind and sand flow encounters the pillars, it creates a bypass, causing the sand surface around the pillars to be gradually eroded. Especially under strong wind conditions, this erosion can be exacerbated, potentially even causing the photovoltaic pillars to topple, seriously affecting the safety and stability of the photovoltaic power station. Utility Model Content
[0003] The main purpose of this utility model is to provide a photovoltaic column sand-pressing device, a photovoltaic column unit, and a photovoltaic sand control system.
[0004] To achieve the aforementioned objectives, the technical solution adopted by this utility model includes:
[0005] The first aspect of this utility model provides a photovoltaic column sand-pressing device, including a first sand-pressing structure and a second sand-pressing structure. The photovoltaic column is set in a first region, the first sand-pressing structure covers the sand surface of the second region, and the second sand-pressing structure covers the sand surface of the third region. The second region surrounds the first region, and the third region surrounds the second region. The first region, the second region, and the third region are sequentially adjacent to each other. The height of the first sand-pressing structure decreases sequentially from the direction away from the photovoltaic column, and the height of the second sand-pressing structure remains constant from the direction away from the photovoltaic column. The average height of the first sand-pressing structure is higher than the average height of the second sand-pressing structure.
[0006] In some more specific implementations, the first sand-stabilizing structure includes at least an inclined surface, a bottom surface, and a side surface, wherein the bottom surface covers the sand surface of the second region, and the side surface is in close contact with the photovoltaic column.
[0007] Furthermore, the angle between the inclined surface and the bottom surface is 10°-30°.
[0008] Preferably, the angle between the inclined surface and the bottom surface is 20°.
[0009] In some more specific implementations, the second sand-pressing structure partially overlaps with the first sand-pressing structure, with an overlap rate ranging from 10% to 20%.
[0010] In some more specific implementations, the ratio of the radius of the photovoltaic column to the width of the first sand-pressing structure ranges from 0.428 to 0.6.
[0011] Furthermore, the ratio of the width of the first sand-pressing structure to the width of the second sand-pressing structure ranges from 1.25 to 3.5.
[0012] In some more specific implementations, the first sand-stabilizing structure is formed by piling up first sand and gravel, and the second sand-stabilizing structure is formed by piling up second sand and gravel, wherein the particle size of the first sand and gravel is greater than or equal to the particle size of the second sand-stabilizing gravel. Specifically, the first sand-stabilizing structure can be a first ring of gravel, and the second sand-stabilizing structure can be a second ring of gravel. The first and second sand and gravel can be, but are not limited to, gravel.
[0013] Furthermore, the ratio of the particle size of the first sand to the particle size of the second sand is in the range of 1-5.
[0014] In some more specific implementations, the width of the first sand-stabilizing structure in the first direction is greater than or equal to the width in the second direction, the first direction being the prevailing wind direction of the environment where the photovoltaic column is located, and the second direction being perpendicular to the first direction.
[0015] Preferably, in the first direction, the width of the windward side of the first sand-pressing structure is greater than or equal to the width of the leeward side.
[0016] More preferably, the width of the windward side of the first sand-pressing structure is 5 to 10 cm larger than the width of the leeward side.
[0017] The second aspect of this utility model provides a photovoltaic column unit, including a first photovoltaic column, a second photovoltaic column, a photovoltaic panel, and a photovoltaic column sand-pressing device. The first photovoltaic column and the second photovoltaic column are connected to the photovoltaic panel, and the photovoltaic panel is inclined. The photovoltaic column sand-pressing device is arranged around the first photovoltaic column and the second photovoltaic column.
[0018] The third aspect of this utility model provides a photovoltaic sand control system, including multiple windbreak and sand-fixing units and photovoltaic pillar units, with the windbreak and sand-fixing units arranged between two adjacent photovoltaic pillar units.
[0019] Compared with the prior art, the advantages of this utility model include at least the following:
[0020] First, the photovoltaic pillar sand-stabilizing device provided by this utility model, with its first and second sand-stabilizing structures piled up and covering the bottom of the photovoltaic pillar, effectively isolates the direct contact between the near-surface windblown sand and the sand surface at the bottom of the photovoltaic pillar. Increasing the roughness of the ground surface helps to slow down wind speed and prevent the in-situ migration and accumulation of quicksand, effectively preventing wind and sand erosion around the photovoltaic pillar, thereby improving the stability of the photovoltaic pillar.
[0021] Secondly, in the photovoltaic column sand-pressing device provided by this utility model, the width of the first sand-pressing structure in the first direction is greater than or equal to the width in the second direction, which can effectively disperse wind force in the prevailing wind direction of the environment where the photovoltaic column is located, thereby significantly improving the wind and sand protection capability of the overall structure. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a sand-pressing device for photovoltaic columns provided in Embodiment 1 of this application;
[0023] Figure 2 This is a top view of a sand-pressing device for a photovoltaic column provided in Embodiment 1 of this application;
[0024] Figure 3 This is a structural schematic diagram of a sand-pressing device for photovoltaic columns provided in Embodiment 2 of this application;
[0025] Figure 4 This is a top view of a sand-pressing device for a photovoltaic column provided in Embodiment 2 of this application;
[0026] Figure 5 This is a structural schematic diagram of a sand-pressing device for photovoltaic columns provided in Embodiment 3 of this application;
[0027] Figure 6 This is a top view of a sand-pressing device for a photovoltaic column provided in Embodiment 3 of this application;
[0028] Figure 7 This is a schematic diagram of a sand-pressing device for a photovoltaic column provided in Embodiment 4 of this application;
[0029] Figure 8 This is a top view of a sand-pressing device for a photovoltaic column provided in Embodiment 4 of this application;
[0030] Figure 9 This is a structural schematic diagram of a photovoltaic column unit provided in this application.
[0031] Explanation of reference numerals in the attached figures:
[0032] 100, Photovoltaic column; 200, First ring of gravel; 300, Second ring of gravel; 101, First photovoltaic column; 102, Second photovoltaic column. Detailed Implementation
[0033] In view of the shortcomings of the prior art, the inventor of this case, through long-term research and extensive practice, has come up with the technical solution of this utility model. The following will further explain the technical solution, its implementation process, and its principles.
[0034] Example 1
[0035] Please refer to Figures 1-2 A circular sand-stabilizing device is used for photovoltaic pillars 100 in desert and Gobi regions, comprising a first ring of gravel 200 and a second ring of gravel 300. Before deployment, the sand surface around the photovoltaic pillar 100 must be leveled to ensure that the sand surface is horizontal within a circular area with a radius of 2m centered on the photovoltaic pillar 100. Then, the first ring of gravel 200 and the second ring of gravel 300 are stacked sequentially. With the center point of the photovoltaic pillar 100 as the center, the first ring of gravel 200 and the second ring of gravel 300 are stacked separately, forming two concentric circular ring structures.
[0036] Specifically, a first ring of gravel 200 is placed around the periphery of the photovoltaic pillar 100, closely adhering to the ground surface and piled around the base of the photovoltaic pillar 100. The height of the first ring of gravel 200 decreases progressively away from the photovoltaic pillar 100, ensuring that the gravel is effectively fixed to the ground. Next, a second ring of gravel 300 is placed around the first ring of gravel 200, forming a ring distribution and closely adhering to the first ring of gravel 200. The average height of the second ring of gravel 300 does not exceed the average height of the first ring of gravel 200. The first and second rings of gravel 200, piled up and covering the base of the photovoltaic pillar 100, effectively prevent direct contact between near-surface windblown sand and the sand surface at the base of the photovoltaic pillar 100. By increasing the surface roughness, it helps to slow wind speed and prevent the in-situ migration and accumulation of quicksand. This design effectively prevents wind erosion around the photovoltaic pillar 100, thereby improving the stability of the photovoltaic pillar 100. In addition, this measure can reduce the frequency and cost of later maintenance, ensuring that the photovoltaic power station can operate stably for a long time.
[0037] In this design, the first ring of gravel 200 includes at least an inclined surface, a bottom surface, and a side surface. The bottom surface covers the sandy surface of the second area, and the side surface is in close contact with the photovoltaic pillar 100. The angle between the inclined surface and the bottom surface is 20°. The first ring of gravel 200 is stacked in a gradually increasing manner from the outer ring to the inner ring. That is, the closer to the photovoltaic pillar 100, the higher the stacking height of the gravel 200, which significantly enhances the stability of the photovoltaic pillar 100 and effectively prevents quicksand erosion, thereby ensuring the structural stability and long-term durability of the photovoltaic pillar 100.
[0038] In this design, the ratio of the radius of the photovoltaic pillar 100 to the width of the first ring of gravel 200 ranges from 0.428 to 0.6. The ratio of the width of the first ring of gravel 200 to the width of the second ring of gravel 300 ranges from 1.25 to 3.5. Specifically, the radius of the photovoltaic pillar 100 is 15 cm. The width of the first ring of gravel 200 is 25–35 cm. The width of the second ring of gravel 300 is 10–20 cm.
[0039] In this scheme, the first ring of gravel 200 is formed by stacking first gravel, and the second ring of gravel 300 is formed by stacking second gravel. The ratio of the particle size of the first gravel to that of the second gravel ranges from 1 to 5. Specifically, the particle size of the first gravel is 3-5 mm. Generally, larger-sized crushed stone and gravel are selected to provide sufficient support and stability during the laying process. The particle size of the second gravel is 1-3 mm. Generally, materials with relatively smaller particle sizes, such as crushed stone, gravel, or coarse sand, are used to help form a more compact and uniform surface, thereby providing good protection for the first ring of gravel 200, enhancing the stability of the overall structure, effectively preventing water penetration and erosion, and ensuring the durability and longevity of the entire paved area. It is worth noting that the composition of the first ring of gravel 200 is not limited to gravel itself; other types of sand-stabilizing materials can also be used.
[0040] In this scheme, the first ring of gravel 200 and the second ring of gravel 300 partially overlap, with an overlap rate ranging from 10% to 20%.
[0041] The circular sand-suppressing device provided in this embodiment can effectively control the erosion of sand particles by near-surface airflow according to geographical environment and wind conditions, significantly reducing the erosion effect of wind and sand on the bottom area of the photovoltaic column 100, thereby improving the structural stability of the photovoltaic power station and ensuring the structural safety of the photovoltaic power station for long-term stable operation. The device is made of specially selected gravel, which is not only environmentally friendly but also economical and efficient. Its design is simple, easy to install and implement, and easy to manage and maintain.
[0042] Example 2
[0043] Please refer to Figure 3 Figure 4 A circular sand-pressing device is used for photovoltaic pillars 100 in desert and Gobi regions, comprising a first ring of gravel 200 and a second ring of gravel 300. Before deployment, the sand surface around the photovoltaic pillar 100 must be leveled to ensure that the sand surface is level within a circular area with a radius of 2m centered on the photovoltaic pillar 100.
[0044] Using the center point of the photovoltaic column 100 as a reference, a point offset 5-10 cm from the windward side in the prevailing wind direction is designated as the center. Then, the first ring of gravel 200 and the second ring of gravel 300 are stacked. In the prevailing wind direction, the width of the first ring of gravel 200 on the windward side needs to be greater than or equal to the width on the leeward side. Specifically, the width of the first ring of gravel 200 on the windward side should be 5-10 cm wider than the width on the leeward side. Other structural elements in this embodiment 2 are consistent with those in embodiment 1 and will not be repeated here.
[0045] Example 3
[0046] Please refer to Figures 5-6 An elliptical sand-stabilizing device is used on a photovoltaic pillar 100 in a desert or Gobi region, comprising a first ring of gravel 200 and a second ring of gravel 300. Before deployment, the sand surface around the photovoltaic pillar 100 must be leveled to ensure that the sand surface is horizontal within a circular area with a radius of 2m centered on the photovoltaic pillar 100. Then, the first ring of gravel 200 and the second ring of gravel 300 are stacked sequentially.
[0047] The width of the first ring of gravel 200 in the first direction is greater than or equal to the width in the second direction. The first direction is the prevailing wind direction of the environment where the photovoltaic pillar is located, and the second direction is perpendicular to the first direction. In other words, with the center point of the photovoltaic pillar 100 as the center, the first ring of gravel 200 and the second ring of gravel 300 are stacked respectively to form two concentric elliptical ring structures. The extended direction of the major diameter of the ellipse overlaps with the prevailing wind direction, which helps to guide the wind flow more effectively under the action of wind force and reduce the impact of wind erosion on the photovoltaic pillar 100 and its surrounding environment. In this scheme, the angle between the inclined surface and the bottom surface on the windward side is the same as the angle between the inclined surface and the bottom surface on the leeward side. Other structures in this embodiment 3 are consistent with those in embodiment 1, and will not be repeated here.
[0048] Example 4
[0049] Please refer to Figure 7 Figure 8 An elliptical sand-stabilizing device is used on a photovoltaic pillar 100 in a desert or Gobi region, comprising a first ring of gravel 200 and a second ring of gravel 300. Before deployment, the sand surface around the photovoltaic pillar 100 must be leveled to ensure that the sand surface is horizontal within a circular area with a radius of 2m centered on the photovoltaic pillar 100. Then, the first ring of gravel 200 and the second ring of gravel 300 are stacked sequentially.
[0050] Using the center point of the photovoltaic pillar 100 as a reference, a circle is constructed with the center offset 5-10 cm from the windward side in the prevailing wind direction. Then, a first ring of gravel 200 and a second ring of gravel 300 are piled up. Wind, as a fluid, creates approximately elliptical pits through its erosive action on the ground. Based on this understanding of natural phenomena, the structure of piling gravel in concentric rings from the inside out aims to effectively prevent soil erosion, especially targeting the critical area of erosion pits, thereby ensuring the stability and safety of the entire photovoltaic pillar and its surrounding environment. In the prevailing wind direction, the width of the first ring of gravel 200 on the windward side needs to be greater than that on the leeward side. Specifically, the width of the first ring of gravel 200 on the windward side should be 5-10 cm wider than that on the leeward side. Furthermore, the width of the first ring of gravel 200 in the first direction is greater than its cross-sectional width in the second direction. The first direction is the prevailing wind direction of the environment where the photovoltaic pillar is located, and the second direction is perpendicular to the first direction. In this design, the angle between the inclined surface on the windward side and the bottom surface is 10-30°. The angle between the inclined surface on the leeward side and the bottom surface is 10-30°.
[0051] The other structures in this embodiment 4 are consistent with those in embodiment 1, and will not be described again here.
[0052] In other embodiments, a sand-stabilizing device for a photovoltaic (PV) column includes a PV column 100 and a second ring of gravel 300. The second ring of gravel 300 covers the bottom of the PV column 100 with the PV column 100 as its center, without accumulating the first ring of gravel 200 at the bottom of the PV column 100. In this design, the width of the ring covered by the second ring of gravel 300 is 25–35 cm. Specifically, the gravel coverage near the inner ring of the PV column 100 is 100%, and the gravel coverage near the outer ring is 80%.
[0053] Please refer to Figure 9 This application also provides a photovoltaic pillar unit for desert and Gobi regions, comprising a first photovoltaic pillar 101, a second photovoltaic pillar 102, a photovoltaic panel, two first rings of gravel 200, and two second rings of gravel 300. The first photovoltaic pillar 101 and the second photovoltaic pillar 102 are connected to the photovoltaic panel, and the photovoltaic panel is inclined. The first photovoltaic pillar 101 and the second photovoltaic pillar 102 are spaced apart along the prevailing wind direction, and each has a first ring of gravel 200 and a second ring of gravel 300 at its bottom.
[0054] In summary, the gravel and other materials used in the above embodiments are not only environmentally friendly but also possess green and ecological characteristics. The simple structural design and low cost reduce the overall cost of the solution. Furthermore, these materials are easy and quick to install, facilitating routine management and maintenance.
[0055] In other implementation schemes, multiple photovoltaic (PV) pillar units can be combined to construct a photovoltaic desertification control system. In this system, to enhance the overall sand control and stabilization effect, windbreak and sand-fixing units are placed between two adjacent PV pillar units. These windbreak and sand-fixing units include, but are not limited to, straw checkerboard mats and sand-fixing grids made of high-density polyethylene (HDPE). This not only effectively fixes the sand and prevents wind erosion but also achieves a synergistic effect with the PV pillar system, jointly promoting ecological restoration and energy development in desert areas.
[0056] Preferably, an ecological restoration unit can also be set between two adjacent photovoltaic pillar units. Specifically, the ecological restoration unit includes, but is not limited to, a series of plant species adapted to the local environment, such as sand rice, sand onion, saxaul, tamarisk, and caragana. These plants can not only adapt to arid and infertile soil conditions, but also prevent soil erosion to a certain extent and increase the organic matter content of the soil, thereby supporting the sustainable development of the entire photovoltaic desertification control system.
[0057] It should be understood that the above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A photovoltaic column sand-pressing device, characterized in that, The system includes a first sand-stabilizing structure and a second sand-stabilizing structure. A photovoltaic pillar is installed in a first region. The first sand-stabilizing structure covers the sand surface in a second region, and the second sand-stabilizing structure covers the sand surface in a third region. The second region surrounds the first region, and the third region surrounds the second region. The first, second, and third regions are sequentially adjacent to each other. The height of the first sand-stabilizing structure decreases sequentially from the direction away from the photovoltaic pillar, while the height of the second sand-stabilizing structure remains constant from the direction away from the photovoltaic pillar. The average height of the first sand-stabilizing structure is higher than the average height of the second sand-stabilizing structure.
2. The photovoltaic column sand-pressing device according to claim 1, characterized in that, The first sand-stabilizing structure includes at least an inclined surface, a bottom surface, and a side surface, wherein the bottom surface covers the sand surface of the second region, and the side surface is in close contact with the photovoltaic column.
3. The photovoltaic column sand-pressing device according to claim 2, characterized in that, The angle between the inclined surface and the bottom surface is 10°-30°.
4. The photovoltaic column sand-pressing device according to claim 3, characterized in that, The angle between the inclined surface and the bottom surface is 20°.
5. The photovoltaic column sand-pressing device according to claim 1, characterized in that, The second sand-pressing structure partially overlaps with the first sand-pressing structure, with an overlap rate ranging from 10% to 20%.
6. The photovoltaic column sand-pressing device according to claim 1, characterized in that, The ratio of the radius of the photovoltaic column to the width of the first sand-pressing structure ranges from 0.428 to 0.
6.
7. The photovoltaic column sand-pressing device according to claim 6, characterized in that, The ratio of the width of the first sand-pressing structure to the width of the second sand-pressing structure ranges from 1.25 to 3.
5.
8. The photovoltaic column sand-pressing device according to claim 1, characterized in that, The first sand-stabilizing structure is formed by piling up first sand and gravel, and the second sand-stabilizing structure is formed by piling up second sand and gravel, wherein the particle size of the first sand and gravel is greater than or equal to the particle size of the second sand and gravel.
9. The photovoltaic column sand-pressing device according to claim 8, characterized in that, The ratio of the particle size of the first sand to the particle size of the second sand is in the range of 1-5.
10. The photovoltaic column sand-pressing device according to claim 1, characterized in that, The width of the first sand-stabilizing structure in the first direction is greater than or equal to the width in the second direction, the first direction being the prevailing wind direction of the environment where the photovoltaic column is located, and the second direction being perpendicular to the first direction.
11. The photovoltaic column sand-pressing device according to claim 10, characterized in that, In the first direction, the width of the windward side of the first sand-pressing structure is greater than or equal to the width of the leeward side.
12. The photovoltaic column sand-pressing device according to claim 10, characterized in that, The width of the first sand-pressing structure on the windward side is 5 to 10 cm larger than the width on the leeward side.
13. A photovoltaic column unit, characterized in that, The device includes a first photovoltaic column, a second photovoltaic column, a photovoltaic panel, and a photovoltaic column sand-pressing device as described in any one of claims 1-12. The first photovoltaic column and the second photovoltaic column are connected to the photovoltaic panel, and the photovoltaic panel is inclined. The photovoltaic column sand-pressing device is arranged around the first photovoltaic column and the second photovoltaic column.
14. A photovoltaic desertification control system, characterized in that, It includes multiple windbreak and sand-fixing units and photovoltaic pillar units, with the windbreak and sand-fixing units set between two adjacent photovoltaic pillar units.