Windproof sand barrier applied to photovoltaic power station

Abstract

The invention provides a wind-proof sand barrier applied to a photovoltaic power station, and relates to the technical field of wind prevention and sand stabilization, the wind-proof sand barrier is used for wind prevention and sand stabilization of a pile foundation of the photovoltaic power station, and the wind-proof sand barrier mainly comprises a connecting assembly and a conical umbrella skirt. A synergistic protection mechanism of a bottom small-aperture high-density pore area and a top large-aperture flow guide pore area is formed; a bottom dense small-aperture structure can obviously inhibit the starting of sand grains on the earth surface and reduce the wind erosion strength close to the earth; the top flaring holes guide wind-sand flow to rise and jump over the pile foundation, and erosion of wind-sand to the pile body is reduced. The porosity gradient distribution is matched with the wind speed attenuation law, the overall windproof efficiency is effectively improved through the design that the porosity is gradually increased from the skirt edge to the skirt top, the probability that external sandy soil invades into a shelter area is remarkably reduced, the loss amount of internal sandy soil is reduced, and therefore the protection stability of the pile foundation is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind and sand prevention, and in particular relates to a wind and sand prevention barrier applied to a photovoltaic power station. BACKGROUND

[0002] With the global climate change and the growing demand for energy, clean energy has become an important part of the energy policy and development strategy of various countries. Solar energy, as a clean and renewable energy, is one of the most ideal energy types to replace traditional energy such as oil, natural gas and coal. The northern region of China generally has the advantage of long sunshine time, strong solar radiation and relatively flat terrain, which is the location condition for building a centralized photovoltaic power station.

[0003] At present, photovoltaic power stations are concentratedly arranged in the deserts and gobi in the north, but due to the high activity of the soil layer, the photovoltaic power station cannot prevent sand by using traditional pouring concrete, and the stability is poor. Under the action of wind, the sand soil is easy to separate from the foundation column, and the exposed foundation column will accelerate weathering, which seriously affects the stability and service life of the photovoltaic power station.

[0004] The existing technology usually uses grass grid sand barriers or sand prevention nets for wind and sand prevention. Due to the harsh environment of the desert and gobi and the poor growth of vegetation, the effect of the grass grid sand barrier is limited and needs to be replaced frequently. The sand prevention net needs to be combined with the photovoltaic power station, and the production, transportation and installation costs are high.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a wind and sand prevention barrier applied to a photovoltaic power station, so that the foundation pile of the photovoltaic power station will not be exposed due to the loss of sand soil, affecting the service life of the photovoltaic power station.

[0007] According to one aspect of the present application, a wind and sand prevention barrier applied to a photovoltaic power station for wind and sand prevention of pile foundation is provided, which mainly comprises: a connecting assembly and a conical umbrella skirt, the connecting assembly is sleeved on the outer side of the pile foundation; the umbrella skirt is sleeved on the outer side of the connecting assembly, the top of the umbrella skirt is connected with the connecting assembly, the skirt edge of the umbrella skirt forms a shelter area with the connecting assembly, and the shelter area is used for planting sand-fixing plants; Wherein, the umbrella skirt comprises a windward area, the windward area is provided with a plurality of first apertures, and the aperture of the first aperture gradually increases in the direction from the skirt edge to the top.

[0008] According to some embodiments of the present application, the distribution area ratio of the first apertures in the windward area is between 0.2 and 0.4.

[0009] According to some embodiments of the present application, the windward area comprises a core area, the core area is located in a region 25cm to 35cm vertically upward from the ground, and the distribution area ratio of the first apertures in the core area is between 0.2 and 0.25.

[0010] According to some embodiments of the present application, the pore diameter of the first apertures in the core area is less than or equal to 3cm.

[0011] According to some embodiments of the present application, the windward area comprises a core area, the core area is located in a region 25cm to 35cm vertically upward from the ground, and the distribution area ratio of the first apertures in the core area is between 0.2 and 0.25.

[0012] According to some embodiments of the present application, the pore diameter of the first apertures in the core area is less than or equal to 3cm.

[0013] According to some embodiments of the present application, the umbrella skirt comprises a leeward area, the leeward area is provided with a plurality of second apertures, and the distribution area ratio of the second apertures in the leeward area is between 0.35 and 0.4, and the pore diameter of the second apertures is greater than or equal to 5cm.

[0014] According to some embodiments of the present application, the wind-sand barrier comprises a first strip structure, a second strip structure, and a fastening structure, the first strip structure and the second strip structure are arranged in a staggered manner, the fastening structure is fastened to the first strip structure and the second strip structure and is located at the junction of the two, and the third strip structure arranged after staggering covers the outer surface of the first strip structure and the second strip structure and forms the first apertures.

[0015] According to some embodiments of the present application, the first strip structure, the second strip structure, the fastening structure, and the third strip structure are all made of plant fiber material, the first strip structure is arranged along the conical surface direction of the umbrella skirt, the second strip structure is arranged along the circumferential direction of the umbrella skirt, the width of the first strip structure is between 12mm and 15mm, the width of the second strip structure is between 8mm and 10mm, and the width of the third strip structure is between 3mm and 5mm.

[0016] According to some embodiments of the present application, the first strip structure, the second strip structure, the fastening structure, and the third strip structure are all made of rattan, before assembly, the rattan is soaked with a 3% to 10% borax solution and the water content is controlled to be between 12% and 15%.

[0017] The application provides a wind and sand prevention barrier applied to a photovoltaic power station, which is used for preventing wind and sand of a pile foundation, and mainly comprises a connecting assembly and a conical umbrella skirt, the connecting assembly is sleeved on the outer side of the pile foundation; the umbrella skirt is sleeved on the outer side of the connecting assembly, the top of the umbrella skirt is connected with the connecting assembly, the edge of the umbrella skirt forms a shelter area with the connecting assembly, and the shelter area is used for planting sand-fixing plants; wherein the umbrella skirt comprises a windward area, a plurality of first apertures are arranged on the windward area, and the aperture gradually increases in the direction from the edge to the top of the umbrella skirt.

[0018] The wind and sand prevention barrier forms a cooperative protection mechanism of a bottom small-aperture high-density aperture area and a top large-aperture flow guide aperture area through the gradient design (the aperture gradually increases in the direction from the edge to the top of the umbrella skirt) of the first apertures on the windward area: the dense small-aperture structure at the bottom can significantly inhibit the starting of surface sand particles and reduce the ground erosion intensity; the flared aperture at the top guides the wind and sand flow to jump over the pile foundation, thereby reducing the direct impact of sand particles on the pile body. The aperture gradient distribution is matched with the wind speed attenuation law, the design that the porosity increases from the edge to the top of the umbrella skirt effectively improves the overall wind prevention efficiency, the probability of external sand and soil invading the shelter area is significantly reduced, the internal sand and soil loss is reduced, and the protection stability of the pile foundation is enhanced.

[0019] The annular shelter area formed by the edge of the umbrella skirt and the connecting assembly forms a stable low-speed vortex area on the leeward side, thereby providing a low-disturbance growth environment for the sand-fixing plants. The sand and soil intercepted by the plant root system and the apertures form a dense composite sand-fixing layer, further reducing the sand and soil loss, and realizing the synergistic effect of ecological protection and engineering protection.

[0020] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the application, and together with the specification, serve to explain the principles of the application. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0022] Figure 1 A three-dimensional structure schematic diagram of the wind and sand prevention barrier provided by the embodiment of the application is shown.

[0023] Figure 2 A three-dimensional structure schematic diagram of the umbrella skirt of the wind and sand prevention barrier provided by the embodiment of the application is shown.

[0024] Figure 3 A front view schematic diagram of the windward area of the umbrella skirt of Figure 2 is shown.

[0025] Figure 4 Fig. 1 shows a front view of a back region of an umbrella skirt. Figure 2

[0026] Figure 5 Fig. 4 shows a perspective view of a framework of a wind-sand barrier provided by an embodiment of the present application.

[0027] Figure 6 Fig. 5 shows a perspective view of a framework of a wind-sand barrier at A. Figure 5

[0028] Figure 7 Fig. 6 shows a schematic view of a wind-sand barrier fixed on the ground provided by an embodiment of the present application.

[0029] The above drawings contain the following reference numerals: 100, pile foundation; 10, connecting assembly; 20, umbrella skirt; 21, skirt top; 22, skirt edge; 30, shelter area; 23, windward region; 231, first aperture; 232, core region; 233, windward upper surface; 24, leeward region; 241, second aperture; 41, first strip structure; 42, second strip structure; 43, fastening structure; 44, third strip structure; 50, U-shaped nail. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the components and arrangements of the various examples are shown in the following description. It should be understood, however, that they are only examples and are not intended to limit the present application. Furthermore, the present application can be implemented in a variety of environments and applications, and, thus, is not limited to the specific examples described herein. Additionally, the present application can be repeated with reference numerals and / or letters in various examples. Such repetition is for the purpose of simplicity and clarity and does not indicate a relationship between the various embodiments and / or arrangements discussed.

[0032] ​​For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0033] like Figures 1 to 3 As shown in some exemplary embodiments of this application, a windbreak and sand-fixing device for photovoltaic power plants is provided for windbreak and sand fixation of pile foundation 100. It mainly includes a connecting component 10 and a skirt 20. The connecting component 10 is fitted around the periphery of the pile foundation 100; the skirt 20 is generally conical and fitted around the periphery of the connecting component 10. The top 21 of the skirt 20 is connected to the connecting component 10, and the side 22 of the skirt 20 forms a sheltered area 30 with the connecting component 10. The sheltered area 30 is used for planting sand-fixing plants. The skirt 20 includes a windward area 23, which has multiple first pores 231. The diameter of the first pores 231 gradually increases along the direction from the side 22 to the top 21.

[0034] The windward area 23 of this windbreak adopts a gradient first pore design 231, with the pore diameter gradually increasing from the skirt edge 22 to the skirt top 21, thus constructing a synergistic protection mechanism of a high-density pore area with small pore diameters at the bottom and a large-diameter guiding pore area at the top. The dense small pore structure at the bottom effectively inhibits the initiation of surface sand particles, significantly reducing the intensity of ground-level wind erosion; the flared pores at the top guide the wind-blown sand flow to rise, allowing it to leap over the pile foundation 100, reducing the direct impact of sand particles on the pile body. This gradient distribution of pores is highly consistent with the wind speed attenuation law, and the design of the umbrella skirt 20 with increasing porosity from the skirt edge 22 to the skirt top 21 significantly improves the overall windbreak efficiency. This not only significantly reduces the probability of external sand intruding into the protected area 30 and reduces the amount of internal sand loss, but also further enhances the stability of the pile foundation 100 protection.

[0035] The annular shelter area enclosed by the umbrella skirt edge and the connecting assembly will form a stable low-speed vortex area on the leeward side. This area can create a low-disturbance growth environment for sand-fixing plants, which is conducive to plant root growth. As the sand-fixing plants grow, their root systems and the sand intercepted by the pores gradually interweave to form a dense composite sand-fixing layer. This composite sand-fixing layer further reduces sand loss, achieving a good effect of synergistic effect of ecological protection and engineering protection, and effectively improving the efficiency of the overall wind and sand prevention system.

[0036] The shape of the umbrella skirt 20 is approximately conical, which enables it to effectively guide and divert airflow and sand particles when sandstorms hit. From a radial perspective, the contact surface of the umbrella skirt 20 appears as a circular plane. This design allows wind and sand to flow smoothly backward along the two sides of the umbrella skirt when it blows towards the umbrella skirt, effectively preventing the accumulation and stagnation of wind and sand in the windward area. From an axial perspective, the contact surface of the umbrella skirt 20 is inclined. Under the action of wind force, part of the wind and sand will be directed above the umbrella skirt, preventing excessive accumulation of wind and sand below the umbrella skirt and further improving the protection effect of the wind and sand barrier.

[0037] The main function of the connecting assembly 10 is to be fitted outside the pile foundation 100. Through this fitting method, the connecting assembly 10 and the pile foundation 100 are stably assembled, providing a reliable foundation connection for the subsequent installation of components such as the umbrella skirt 20, ensuring the stability and reliability of the entire wind and sand prevention structure.

[0038] In some embodiments, in order to achieve better wind and sand prevention effect, the selected sand-fixing plants have diverse choices. For example, Calligonum rubicundum has developed root systems and strong drought resistance, which can penetrate deep into the ground to stabilize sand; flower sticks can adapt to dry and sandy environments and grow rapidly to effectively block wind and sand; shrubs not only prevent wind and sand, but also have certain feeding value; sand millet can grow in harsh sandy environments and help improve soil structure; camel thorn can reduce sand loss by its unique root system; and Haloxylon ammodendron has strong vitality and is of great significance to soil and wind prevention and sand fixation. Therefore, sand-fixing plants can be selected from one or more of Calligonum rubicundum, flower sticks, shrubs, sand millet, camel thorn, and Haloxylon ammodendron for planting to fully utilize their sand-fixing advantages and build a more perfect ecological protection system.

[0039] In addition, the first pores 231 on the windward area 23 of the umbrella skirt not only play an important role in wind and sand prevention, but also have the function of light transmission. These pores can allow light to penetrate the umbrella skirt, providing necessary light conditions for sand-fixing plants in the bottom shelter area 30. Adequate light helps sand-fixing plants perform photosynthesis and promotes their healthy growth, further enhancing the sand-fixing capacity of the shelter area and achieving the organic integration of the function of the wind and sand prevention structure and ecological benefits.

[0040] In some alternative embodiments, the main body of the umbrella skirt adopts a right circular truncated cone structure with a larger diameter at the bottom than at the top. This arrangement allows the umbrella skirt to form an angle of 55° to 65° with the horizontal plane, which provides excellent anti-overturning performance. Under the impact of external forces such as wind and sand, such a structure can better maintain stability and reduce the risk of tilting due to uneven stress, thereby ensuring that the entire wind and sand prevention barrier system can continue to effectively prevent wind and sand, providing reliable protection for the pile foundation 100 of the photovoltaic power station.

[0041] The flow guiding effect of the umbrella skirt is based on its conical surface structure. This conical surface forms a tapered flow guiding surface. When the airflow carrying sand particles hits this surface, part of the kinetic energy of the airflow is converted into upward lift. This lift drives the sand particles carried in the airflow to the diffusion area around the umbrella skirt, so that the sand particles do not accumulate at the bottom of the pile. Through this ingenious flow guiding design, the accumulation of sand at the bottom of the pile is effectively reduced, further improving the protection effect of the wind and sand prevention barrier on the pile foundation 100, and ensuring the stable operation of the photovoltaic power station related facilities.

[0042] In addition, in terms of structural design of the umbrella skirt, the center of gravity of the umbrella skirt is reduced by 20% to 30% compared to traditional designs through reasonable structural optimization. This change significantly enhances the wind resistance stability of the umbrella skirt in strong wind environments, enabling it to withstand wind impact more stably in windy and sandy weather.

[0043] When the wind and sand airflow acts on the windward surface of the umbrella skirt, the curved surface structure can cleverly convert the wind load into axial pressure. This force conversion method makes the stress distribution of the umbrella skirt more uniform and reasonable, greatly improving the stability and reliability of the overall structure, thereby more effectively protecting the pile foundation 100 of the photovoltaic power station and prolonging the service life of the wind and sand prevention barrier.

[0044] In some exemplary embodiments of the present application, the distribution area ratio of the first aperture 231 in the windward area 23 is between 0.2 and 0.4.

[0045] When the distribution area ratio of the first aperture 231 is less than 0.2, due to the relatively small total area of the apertures, the airflow passing through the windward area is not easy to pass through, and the sand particles carried by the airflow are likely to be retained, which may cause congestion. This congestion can form a vortex zone on the leeward side, and when the wind and sand blows, the sand particles will accumulate in the vortex zone. This accumulation not only affects the normal operation of the wind and sand prevention barrier, but also may pose a threat to the stability of the photovoltaic equipment, as the accumulated wind and sand may erode the components of the photovoltaic equipment or hinder its operation.

[0046] Conversely, if the distribution area of ​​the first pore 231 is greater than 0.4, although the airflow is enhanced, the windproof efficiency of the sand barrier will decrease. Pores with too large an area ratio make it easier for wind and sand to penetrate, and the sand particles inside are easily carried away, making it impossible to effectively block and guide wind and sand, thereby reducing the protective effect of the sand barrier on the pile foundation 100 of the photovoltaic power station.

[0047] In some exemplary embodiments of this application, the distribution area of ​​the first pore 231 in the windward area 23 accounts for 0.25. This setting can reduce the amount of sand accumulation around the pile foundation 100 by about 78%, and the internal sand loss is also greatly controlled, which greatly improves the protection capability of the windbreak and sand barrier for the pile foundation 100.

[0048] In some exemplary embodiments of this application, the distribution area ratio of the first pore 231 within the windward region 23 is 0.27, 0.23, 0.24, 0.22, or 0.21. The aforementioned distribution area ratios can be adaptively selected based on the sand particle size and sand layer thickness near the pile foundation 100.

[0049] In some exemplary embodiments of this application, the distribution area ratio of the first pore 231 in the windward region 23 is positively correlated with the sand particle size and negatively correlated with the sand layer thickness.

[0050] like Figure 2 and Figure 3 As shown, in some exemplary embodiments of this application, the windward region 23 includes a core region 232, which is located in the area 25cm to 35cm vertically upward from the ground, and the distribution area of ​​the first pore 231 in the core region 232 is between 0.2 and 0.25.

[0051] The core area 232 is designed to protect the area close to the ground. The denser first pore design can effectively prevent the intrusion of sand and soil, thereby protecting the shelter area and sand-fixing plants. It can also effectively prevent the sand and soil within the area covered by the umbrella skirt from flowing outward.

[0052] The core area 232 is designed primarily to provide focused protection for critical locations near the ground. This area utilizes a relatively dense first pore structure 231. On one hand, this effectively resists sand intrusion, forming a strong protective barrier for the sheltered area and the sand-fixing plants growing within it, ensuring a stable and safe growing environment. On the other hand, it effectively prevents sand from escaping from the area covered by the umbrella-shaped structure, further enhancing the windbreak's ability to fix and retain sand, maintaining sand balance within the sheltered area. This allows the entire windbreak system to play a more significant role in windbreak and sand fixation, as well as ecological protection, providing a solid foundation for the stable operation of the photovoltaic power station.

[0053] In some exemplary embodiments of this application, the diameter of the first pore 231 within the core region 232 is less than or equal to 3 cm. Within this range, the diameter of the first pore 231 effectively restricts the loss of sand or mud from the interior and prevents the entry of sand and soil, thus maintaining the ecological balance within the umbrella-shaped skirt.

[0054] On the one hand, the pore size within this range can effectively prevent sand or mud from escaping from inside the umbrella skirt. Because the pore size is reasonably controlled, small sand and mud particles have difficulty escaping through the pores, thus ensuring the stability of soil and sand in the sheltered area inside the umbrella skirt and maintaining the material balance of the ecosystem.

[0055] On the other hand, the smaller apertures also greatly enhance the resistance to the intrusion of external sand and soil. When sandstorms occur, larger sand particles cannot pass through these apertures to enter the sheltered area inside the umbrella skirt, reducing the disturbance and damage of external sand and soil to the internal ecological environment.

[0056] By strictly controlling the aperture of the first pore 231, the ecological balance within the umbrella skirt is effectively maintained, creating a favorable environment for the growth of sand-fixing plants. This further enhances the comprehensive effectiveness of the windbreak and sand-fixing barrier in windbreak and sand fixation as well as ecological protection, ensuring the stability and safety of the ecosystem surrounding the pile foundation 100 of the photovoltaic power station.

[0057] like Figure 3 As shown, in some exemplary embodiments of this application, the area between the core region 232 and the skirt top 21 is the windward upper surface 233, and the distribution area ratio of the first pore 231 in the windward upper surface 233 is between 0.3 and 0.35.

[0058] At this ratio, the windward side 233 can effectively guide airflow and sand particles, ensuring a certain level of windproof performance while promoting the reasonable diffusion of sand and dust flow, and avoiding airflow blockage or insufficient windproof capability.

[0059] In some exemplary embodiments of this application, the diameter of the first pore 231 within the windward upper surface 233 is between 4 cm and 6 cm. A larger pore diameter allows airflow to pass through more smoothly, reducing airflow congestion in this area and helping to guide the sand flow upwards, reducing the direct impact of sand particles on the pile. At the same time, a pore diameter of 4 cm to 6 cm is not so large as to significantly reduce windbreak effectiveness, still providing some blocking effect for larger sand particles, thus balancing the effects of windbreak and airflow guidance.

[0060] By controlling the aperture of the first hole 231 in the windward side 233 to between 4cm and 6cm, the windbreak can effectively disperse the wind and sand flow in this area while maintaining a certain windproof capability. Working in conjunction with other parts such as the core area, it further enhances the overall protection effect of the windbreak on the pile foundation 100 of the photovoltaic power station, ensuring the growth environment of sand-fixing plants in the sheltered area and the stable operation of photovoltaic equipment.

[0061] In some exemplary embodiments of this application, the aperture of the first pore 231 within the windward surface 233 is 4 cm, 4.2 cm, 4.5 cm, 4.7 cm, 5.2 cm, 5.5 cm, or 5.8 cm. This can be selected based on geographical location and the particle size of the sand in the wind.

[0062] Specifically, due to the unique wind and sand environments of different geographical locations, the particle size of sand in the wind also varies. For example, in areas with strong winds and generally coarse sand particles, selecting a relatively large pore size (such as 5.5cm or 5.8cm) for the first pore 231 can more effectively guide the wind and sand flow, prevent the pores from being blocked by large sand particles, and ensure the normal operation of the windbreak. In areas with relatively small sand particle sizes, a smaller pore size (such as 4cm or 4.2cm) for the first pore 231 can be selected, which can better block smaller sand particles while ensuring windproof performance.

[0063] By flexibly selecting the aperture of the first pore 231 based on the specific geographical location and the particle size of the sand in the wind, the windbreak can better adapt to different wind and sand conditions, maximize its function of windbreak and sand fixation, provide more reliable protection for the pile foundation 100 of the photovoltaic power station, and at the same time help maintain the ecological balance in the shelter area.

[0064] like Figure 4 As shown, in some exemplary embodiments of this application, the umbrella skirt 20 includes a leeward region 24, which is provided with a plurality of second pores 241. The distribution area of ​​the second pores 241 in the leeward region 24 is between 0.35 and 0.4, and the aperture of the second pores 241 is greater than or equal to 5 cm.

[0065] Within the leeward region 24, the distribution area of ​​the second pore 241 is larger than that of the first pore, and the diameter of the second pore 241 is larger than that of the first pore. This arrangement of the second pore 241 can effectively promote airflow, avoid the formation of large eddies and pressure differences on the leeward side, and reduce the accumulation of sand and dust in the leeward region.

[0066] The large aperture and the appropriate distribution area ratio enable the leeward area to ensure certain ventilation effect and have certain blocking capacity for large particle sand particles, and the aperture structure of the windward area cooperates with each other to improve the overall wind and sand prevention performance of the umbrella skirt, further enhances the protection of the wind and sand prevention barrier on the pile foundation 100 of the photovoltaic power station, and maintains the stable environment in the shelter area.

[0067] As shown in Figure 5 and Figure 6 In some exemplary embodiments of the present application, the wind and sand prevention barrier includes a first strip structure 41, a second strip structure 42, and a fastening structure 43, the first strip structure 41 and the second strip structure 42 are arranged alternately, the fastening structure 43 is fastened and connected with the first strip structure 41 and the second strip structure 42 and is located at the intersection of the two, and the third strip structure 44 arranged alternately in the space formed by the first strip structure 41 and the second strip structure 42 covers the outer surfaces of the first strip structure 41 and the second strip structure 42 and forms a first aperture 231.

[0068] The intersection of the first strip structure 41 and the second strip structure 42 is firmly combined together through fastening connection, which ensures that the entire structure will not easily loosen or collapse when facing external forces such as wind and sand. The third strip structure 44 arranged alternately covers the outer surfaces of the first strip structure 41 and the second strip structure 42 outside the structure formed by the first strip structure 41 and the second strip structure 42.

[0069] The first strip structure 41 and the second strip structure 42 form a supporting framework, and the third strip structure 44 forms a cover covering the surface thereof. The gap formed by the first strip structure 41 and the second strip structure 42 is much larger than the first aperture, and therefore the first aperture can directly communicate with the gap between the first strip structure 41 and the second strip structure 42.

[0070] In some exemplary embodiments of the present application, the first strip structure 41, the second strip structure 42, the fastening structure 43, and the third strip structure 44 are all selected from plant fiber materials, the first strip structure 41 is arranged along the conical surface of the umbrella skirt 20, the second strip structure 42 is arranged along the circumferential direction of the umbrella skirt 20, the width of the first strip structure 41 is between 12mm and 15mm, the width of the second strip structure 42 is between 8mm and 10mm, and the width of the third strip structure 44 is between 3mm and 5mm.

[0071] The certain toughness and strength of the plant fiber materials can play a good role in the wind and sand environment, and at the same time, these materials can also naturally degrade over time, reducing the long-term impact on the environment.

[0072] The width of the first strip structure 41 is set between 12mm and 15mm. This width provides it with sufficient strength to support the structure without being too heavy and affecting overall ventilation and light transmission. The width of the second strip structure 42 is between 8mm and 10mm, which complements the first strip structure 41 without excessively increasing the structure's weight. The width of the third strip structure 44 is narrower, between 3mm and 5mm. As the part covering the surface of the frame to form a shield, this width satisfies the need to create pores to achieve windproof and light-transmitting functions, while also ensuring its flexibility to better fit the frame structure.

[0073] In some exemplary embodiments of this application, the first strip structure 41, the second strip structure 42, the fastening structure 43 and the third strip structure 44 are all made of rattan. Before assembly, the rattan is soaked in a 3% to 10% borax solution and its moisture content is controlled between 12% and 15%.

[0074] Rattan, as a natural material, has a certain degree of flexibility and strength, making it suitable for constructing structures that prevent wind and sand.

[0075] Soaking in borax solution can enhance the rattan's resistance to insects and decay, enabling it to maintain structural integrity and performance stability for a longer period under complex conditions such as windy and sandy environments and possible dampness, thus extending the service life of the windbreak.

[0076] This embodiment strictly controls the moisture content of the rattan, maintaining it between 12% and 15%. Rattan with this moisture content possesses high flexibility, allowing for more flexible bending, winding, and interweaving during the weaving process. This facilitates the creation of various windbreak structures according to design requirements, such as staggered strip structures. This flexibility not only reduces the difficulty of weaving and improves production efficiency but also ensures that the woven windbreak structure is tight, sturdy, and stably connected between its components.

[0077] like Figure 7 As shown in some exemplary embodiments of this application, the skirt bottom and the bottommost second strip structure are combined and fixed by a U-shaped nail 50 driven into the ground surface. The U-shaped nail 50 drives the combined portion into the ground surface, thereby achieving a fixed connection between the windbreak and the ground. This fixing method is simple and effective. The U-shaped nail can penetrate deep into the ground surface, utilizing the friction and supporting force of the soil to firmly fix the windbreak to the ground. Under the action of external forces such as wind and sand, the U-shaped nail can effectively prevent the windbreak from shifting or tilting, ensuring that it can continuously and stably play its role in windbreak and sand fixation, providing reliable protection for the pile foundation 100 of the photovoltaic power station.

[0078] In some exemplary embodiments of the present application, the first strip structure and the second strip structure can be made of metal materials or hard materials, and can be formed into a framework by welding or bonding. Figure 5

[0079] In some exemplary embodiments of the present application, the connecting assembly is also combined with the longitudinal and transverse strip structures.

[0080] Referring to Figures 1 to 7 , the present application provides a specific embodiment, which mainly provides a wind and sand barrier that integrates the vortex deceleration principle in fluid mechanics, combines the material properties of ecological engineering methods, uses woody biomass materials such as rattan, and designs a sand barrier with a continuous woven structure composed of a vertical cylindrical connecting assembly and a radial umbrella skirt. The outer ring of the sand barrier structure is the umbrella skirt, and the inner ring is the connecting assembly. The umbrella skirt and the connecting assembly are consistent in height, and the upper and lower ends are flush. The upper opening of the umbrella skirt, i.e., the waist, is connected to the cup cylinder opening by weaving rattan in a longitudinal and transverse manner. The lower edge of the umbrella skirt is connected to the bottom of the connecting assembly in a gradual opening line type divergent manner by rattan. In this way, the umbrella skirt and the cup cylinder are closely connected to form a composite whole.

[0081] The connecting assembly includes a cup cylinder and a sand barrier framework. The cup cylinder has a diameter of 30 cm, which can be adjusted according to the size of the pile foundation 100 of the photovoltaic power station. The cup cylinder has a height of 50 cm and is open at the top and bottom to fit the pile foundation 100.

[0082] The skirt top 21 of the umbrella skirt 20 has the same diameter as the cup cylinder, and the diameter of the bottom of the umbrella skirt is 100 cm, and the whole is unfolded at an angle of 60°.

[0083] The sand barrier framework is built by interlacing a plurality of first strip structures and a plurality of second strip structures. Specifically, it can be 32 first strip structures vertically arranged with a diameter of 12-15 mm, and the second strip structure is a bamboo joint type transverse reinforcing ring with a diameter of 8-10 mm and a spacing of 10 cm.

[0084] The core area is within a height range of 30 cm above the ground on the windward surface of the umbrella skirt. The distribution density of the third strip structure in this area needs to be increased by 30%. The range above 30 cm is the windward surface, and the distribution density of the third strip structure is the standard density. The leeward surface of the umbrella skirt has a standard density.

[0085] The outer edge of the skirt edge is a third strip structure with a width of 10 cm. The third strip structure in this area can be further increased by 30%, and the skirt edge is twisted and woven with 3 strands of rattan with a diameter of 8-10 mm.

[0086] ​The cup cylinder and the umbrella skirt are cross-woven with rattan with a diameter of 3-5 mm to form a diamond grid. The porosity of the cup cylinder is controlled at 20-25%, and the corresponding pore size is ≤3 cm. The porosity of the umbrella skirt in the range of 0-30 cm (core area) above the ground on the windward side is controlled at 20-25%, and the corresponding pore size is ≤3 cm; the porosity above 30 cm is controlled at 30-35%, and the corresponding pore size is 5 cm. The porosity of the leeward side of the umbrella skirt is controlled at 35-40%, and the corresponding pore size is >5 cm. The key connection points of the weaving are bundled and reinforced with a diameter of 3 mm fastening structure (which can be a thin rattan).

[0087] During installation, the sand barrier is sleeved on the pile foundation 100 of the photovoltaic power station from top to bottom. Considering the actual situation of the built photovoltaic power station, the sand barrier can be woven in a non-closed manner, and a nesting lock hole with a diameter of 12 mm is reserved on both sides of the outside of the cup cylinder and the umbrella skirt at the same longitudinal position. After the sand barrier is sleeved on the pile foundation 100 of the photovoltaic power station by using the flexibility of the rattan, a thin bamboo pole with a length of 105 cm and a diameter of 10 mm is used as a pin to be inserted into all the lock holes to lock the sand barrier.

[0088] To prevent the bamboo pin from falling off, an inverted arc-shaped stainless steel sleeve is installed at the lower section of the bamboo pin 10 cm from the end, 50 cm and 100 cm from the middle, with a thickness of 1 mm, an inner diameter of 10.5 mm, and a total length of 5 cm. The lower section of the inverted arc-shaped steel sheet is 3 cm long, and the upper section of the sleeve is 2 cm long, which is anchored to the bamboo pin, and the bamboo pin is installed from bottom to top.

[0089] To enhance the stability of the sand barrier, a U-shaped nail 50 with a length of 20 cm and a diameter of 5 mm is driven into the ground every 20 cm at the bottom edge of the umbrella skirt to fix it.

[0090] The rattan is soaked in a 5% borax solution for 72 hours for corrosion prevention pretreatment. The water content of the main rattan is controlled at 12-15%.

[0091] In the above specific embodiments, the following advantages are achieved: The wind and sand barrier in this embodiment has better prevention and control effect than the traditional grass checkerboard sand barrier and is more durable.

[0092] The wind and sand barrier in this embodiment is more environmentally friendly, efficient, and cost-effective than the sand barrier net, and is easy to install and construct.

[0093] The wind and sand barrier in this embodiment has more obvious prevention and control effect than the clay sand barrier, gravel sand barrier, and stone sand barrier, and is easy to install and construct.

[0094] The wind-sand prevention barrier in the embodiment combines the vortex deceleration principle in fluid mechanics and the material characteristics of ecological engineering method to form a special semi-closed structure, which can block wind in front, reduce wind speed, pull sand in back, stabilize ground surface, provide a relatively stable ground surface microenvironment for seedling growth, and provide shelter for seedlings, create a micro-ecological environment for vegetation growth, and help vegetation ecological restoration.

[0095] It should be understood that the application is not limited to the detailed structure and arrangement of the components presented in the application. The application can have other embodiments and can be implemented and executed in various ways. The foregoing variations and modifications fall within the scope of the application. It should be understood that the application disclosed and defined in the application extends to all alternative combinations of two or more of the individual features mentioned or evident from the description and / or drawings. All these different combinations constitute various alternative aspects of the application. The embodiments described in the application illustrate the best way known to the inventors for carrying out the application and will enable a person skilled in the art to utilize the application.

Claims

1. A wind and sand prevention barrier applied to a photovoltaic power station, for wind and sand prevention of a pile foundation, characterized in that, The application relates to a wind-sand prevention barrier. The wind-sand prevention barrier comprises: a connecting assembly, which is sleeved outside the pile foundation; and a conical umbrella skirt, which is sleeved outside the connecting assembly, the top of the umbrella skirt is connected with the connecting assembly, the edge of the umbrella skirt forms a shelter area with the connecting assembly, and the shelter area is used for planting sand-fixing plants.

2. The windbreak of claim 1, wherein, The umbrella skirt comprises a windward area, which is provided with a plurality of first apertures, and the aperture of the first apertures gradually increases in the direction from the edge to the top.

3. The windbreak of claim 2, wherein, The distribution area ratio of the first apertures in the windward area is between 0.2 and 0.

4.

4. The windbreak of claim 3, wherein, The windward area comprises a core area, which is located in a region vertically upward 25cm to 35cm from the ground, and the distribution area ratio of the first apertures in the core area is between 0.2 and 0.

25.

5. The windbreak of claim 3, wherein, The aperture of the first apertures in the core area is less than or equal to 3cm.

6. The windbreak of claim 5, wherein, The core area and the top form an upper windward area, and the distribution area ratio of the first apertures in the upper windward area is between 0.3 and 0.

35.

7. The windbreak of claim 1, wherein, The aperture of the first apertures in the upper windward area is between 4cm and 6cm.

8. The windbreak of any one of claims 1 to 7, wherein, The umbrella skirt comprises a leeward area, which is provided with a plurality of second apertures, and the distribution area ratio of the second apertures in the leeward area is between 0.35 and 0.4, and the aperture of the second apertures is greater than or equal to 5cm.

9. The windbreak of claim 8, wherein, The wind-sand prevention barrier comprises a first strip structure, a second strip structure and a fastening structure, the first strip structure and the second strip structure are arranged in an interlaced mode, the fastening structure is used for fastening the first strip structure and the second strip structure and is located at the joint of the first strip structure and the second strip structure, a third strip structure is arranged on the outer surfaces of the first strip structure and the second strip structure in the space formed by the first strip structure and the second strip structure after interlacing, and the third strip structure forms the first apertures.

10. The windbreak of claim 9, wherein, The first strip structure, the second strip structure, the fastening structure and the third strip structure are all made of plant fiber materials, the first strip structure is arranged along the conical surface of the umbrella skirt, the second strip structure is arranged along the circumferential direction of the umbrella skirt, the width of the first strip structure is between 12mm and 15mm, the width of the second strip structure is between 8mm and 10mm, and the width of the third strip structure is between 3mm and 5mm. The first strip structure, the second strip structure, the fastening structure and the third strip structure are all made of rattan, and the rattan is soaked in a 3%-10% borax solution before assembly and the water content of the rattan is controlled to be between 12% and 15%.

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