A wind and sand protection system for photovoltaic sand control

Abstract

The present invention discloses a wind and sand protection system for photovoltaic sand control, comprising at least one protection unit, the protection unit comprising a photovoltaic electric field, a closed sand-fixing net, a first sand barrier and a walking chicken cage, the photovoltaic electric field comprising at least two photovoltaic panels arranged at intervals, the closed sand-fixing net being arranged between two adjacent photovoltaic panels and being connected to the two adjacent photovoltaic panels; the top of the first sand barrier being connected to the first photovoltaic panel in a selected direction, the bottom of the first sand barrier being connected to the ground; the photovoltaic panel and the closed sand-fixing net being arranged in sequence on one side of the first sand barrier along the selected direction; the photovoltaic electric field, the closed sand-fixing net and the first sand barrier forming a closed space. In the present invention, the sand barrier, the photovoltaic panel and the closed sand-fixing net together form a closed space, which largely isolates the contact between the surface and the airflow in the field area, weakens or avoids the interaction between wind and sand, can completely stabilize the surface, and solve the wind and sand hazards encountered in the photovoltaic sand control project in the mobile sand dune area.

Description

Technical Field

[0001] The invention relates to a wind and sand protection system, in particular to a wind and sand protection system for photovoltaic sand control, and belongs to the technical field of ecological environment management and photovoltaic sand control. Background Art

[0002] "Shagohuang" is a general term for deserts, Gobi and wastelands. It covers a vast area and is distributed in the northwest, north China and northeast China in an arc-shaped belt. This type of area has strong sunlight, strong wind, little precipitation, sparse vegetation, sparse population, flying sand and harsh climate. It is a region rich in wind and solar energy resources in my country. It has a large area of ​​unused land outside the ecological red line area, and the land space resources are rich. It is estimated that if 1% of my country's desertified area is used for new energy power generation, its installed capacity will exceed the current total installed capacity of power generation in my country. Many large photovoltaic bases in northwest my country are mostly built in the "Shagohuang" area, and most of them are suffering from serious wind and sand hazards. Therefore, when carrying out photovoltaic construction in these areas, whether it is the photovoltaic sand control measures themselves or the maintenance of the photovoltaic field, an important issue is the wind and sand protection after the construction of the field.

[0003] Different from the wind and sand protection in general areas, the construction of photovoltaic or photovoltaic sand control projects in the desert area will face serious sand burial and wind erosion hazards. There are three main reasons for this. First, in desert areas, quicksand activities are frequent and the terrain is undulating. In the Gobi desert area, the sand source is abundant, dry and windy, and quicksand has the characteristics of accumulation when encountering obstacles; secondly, the photovoltaic array's own strong wind blocking and sand fixation effects will destroy the original balanced and stable wind and sand flow field, and then form sand accumulation on the underlying surface, raising the sand surface elevation, which will directly cause the risk of sand burial of the photovoltaic array, or cause wind erosion of the foundation piles, or even collapse; in addition, northwest winds generally prevail in the desert area, and under the premise that the photovoltaic panels are set to the south, the air supply channel formed by the panels and the ground will inevitably intensify the transmission process of wind and sand to the interior of the site. Therefore, it is very difficult to control sand damage in photovoltaic power plants in the desert areas. Finding effective control measures will provide guarantees for the normal operation of photovoltaic power plants in these areas and improve the comprehensive utilization efficiency of various resources such as land and solar energy. It has important practical significance for the development of my country's photovoltaic industry and response to energy crises.

[0004] We have no specific countermeasures for the sand burial and wind erosion hazards in the Shagohuang photovoltaic array area. When burial or erosion occurs, temporary treatment such as sand removal or pile foundation reinforcement is often carried out by manual and mechanical means. The photovoltaic array changes the flow field and topography, and the changes in topography and flow field aggravate the sand burial or erosion of photovoltaic facilities. At present, we are still unclear about the long-term and complex mutual feedback process and its internal mechanism between the photovoltaic array and the wind and sand transmission, and we cannot fundamentally solve the long-term damage caused by sand accumulation to the photovoltaic array.

[0005] In addition, current photovoltaic sand control is often combined with animal husbandry to form photovoltaic animal husbandry. However, in the desolate Shagohuang area, poultry raised in the photovoltaic array area are often preyed upon by wild animals. Chickens, ducks and other poultry will also jump onto pipelines, brackets, and even the upper edge of the photovoltaic panels, causing damage and pollution to the equipment, affecting the normal operation and maintenance of the power field. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a wind and sand protection system for photovoltaic sand control that can block the interaction between wind and sand in the photovoltaic field, fix surface quicksand, and ensure the sustainable and normal operation and maintenance of photovoltaic equipment.

[0007] In order to achieve the aforementioned invention objectives, the technical solution adopted by the present invention includes a wind and sand protection system for photovoltaic sand control.

[0008] The wind and sand protection system for photovoltaic sand control comprises at least one protection unit, wherein the protection unit comprises a photovoltaic electric field, a closed sand fixation net, a first sand barrier and a walking chicken cage.

[0009] The photovoltaic electric field includes at least two photovoltaic panels arranged at intervals.

[0010] The closed sand-fixing net is arranged between two adjacent photovoltaic panels and connected to the two adjacent photovoltaic panels to close the top space between the two adjacent photovoltaic panels.

[0011] A first sand barrier, wherein the first sand barrier is a curtain-type brush-shaped sand barrier, the top of the first sand barrier is connected to the first photovoltaic panel in the selected direction, and the bottom of the first sand barrier is connected to the ground;

[0012] The photovoltaic panel and the closed sand-fixing net are sequentially arranged on one side of the first sand barrier along the selected direction;

[0013] The photovoltaic electric field, the closed sand-fixing net and the first sand barrier form a closed space;

[0014] The walking chicken cage is arranged in a closed space surrounded by a photovoltaic electric field, a closed sand-fixing net and a first sand barrier and can roll freely in the enclosed space.

[0015] Furthermore, the protection system includes a first sand barrier, a first photovoltaic panel, a closed sand-fixing net and a second photovoltaic panel arranged in sequence along a selected direction, the top of the first sand barrier is connected to the first end of the first photovoltaic panel, the bottom end of the first sand barrier is connected to the ground, one end of the closed sand-fixing net is connected to the second end of the first photovoltaic panel, and the other end of the closed sand-fixing net is connected to the third end of the second photovoltaic panel, and the first sand barrier, the first photovoltaic panel, the closed sand-fixing net and the second photovoltaic panel form a closed space.

[0016] Furthermore: a triangle is formed with the second photovoltaic panel and the closed sand-fixing net as sides, and the angle between the second photovoltaic panel and the closed sand-fixing net is 90-130 degrees; the inclination angle of the second photovoltaic panel is 30-50 degrees, the length of the second photovoltaic panel in the downwind direction is 2-5m, and the length of the closed sand-fixing net in the downwind direction is 3-15m.

[0017] Furthermore, the angle between the first photovoltaic panel and the closed sand-fixing net is 90-130 degrees.

[0018] Furthermore, a right-angle trapezoid is formed by the first photovoltaic panel, the first sand barrier and the ground as the edges, the inclination angle of the first photovoltaic panel is 30-50 degrees, and the height of the first sand barrier is 2-5m.

[0019] Furthermore, the wind and sand protection system also includes a second sand barrier, which is arranged on the fence outside the photovoltaic field.

[0020] Furthermore, the second sand barrier is a hanging curtain-type brush-like sand barrier.

[0021] Furthermore, the hanging curtain-type brush-like sand barrier includes a fixed crossbar and at least one brush column arranged on the fixed crossbar.

[0022] Furthermore, the fixed cross bar includes an upper fixed cross bar and a lower fixed cross bar, the upper fixed cross bar is fixed on the photovoltaic panel or the fence, and the lower fixed cross bar is fixed on the ground; one end of the hanging curtain-type brush-like sand barrier is fixed on the upper fixed cross bar, and the other end is fixed on the lower fixed cross bar.

[0023] Furthermore, the brush column is a straw brush column.

[0024] Furthermore, the straw brush column comprises a hanging rope and a straw bundle twisted and fixed on the hanging rope, and two ends of the hanging rope are respectively connected to an upper fixed cross bar and a lower fixed cross bar.

[0025] Furthermore, the suspension rope and the straw bundle are both elastic and flexible.

[0026] Furthermore, the straw bundles are densely distributed along the length direction of the hanging rope, and the two ends of the straw bundles extend to both sides of the hanging rope.

[0027] Furthermore, the straw bundle is composed of a plurality of plant stems.

[0028] Compared with the prior art, the advantages of the present invention include:

[0029] 1) The present invention provides a wind and sand protection system for photovoltaic sand control, wherein the curtain-type brush-like sand barrier, photovoltaic panel and closed sand fixation net together form a closed space, which largely isolates the contact between the surface and airflow in the site, weakens or avoids the interaction between wind and sand, and can completely stabilize the surface, thereby solving the wind and sand hazards encountered in photovoltaic construction or photovoltaic sand control projects in mobile sand dune areas, especially sand burial hazards.

[0030] 2) The closed sand-fixing net provided by the present invention is connected to the edge of the photovoltaic bracket by a hook, and the hanging and taking construction is convenient. Since the closed sand-fixing net isolates the interaction between the airflow and the ground surface to a certain extent, the sand and dust accumulated on the panel will be significantly reduced, so the cleaning operation frequency is very low, which will not affect the normal operation and maintenance of the photovoltaic field.

[0031] 3) The curtain-type brush-like sand barrier provided by the present invention has the straw bundles and the hanging ropes which are elastic and flexible, and the straw brush column has a certain thickness in the downwind direction, so the brush column, the hanging rope and the straw of the sand barrier can swing with the wind, greatly weakening the wind force, and is used to block the sand coming from the upwind direction of the electric field, so that the quicksand is fixed on the surface near the sand barrier, reducing the harm of wind-blown sand inside the electric field, and having a significant effect of suppressing wind and blocking sand. The straw bundles are composed of plant stems, so that the sand barrier is light in weight and can be hung on photovoltaic brackets and fences without the need for special columns. The material is environmentally friendly, the cost is low, and the construction is convenient.

[0032] 4) The walking chicken cage provided by the present invention can prevent chickens from climbing onto photovoltaic supports, pipelines or panels, causing damage to pipelines, pollution of panels and other hazards, thereby solving many harmful problems that may be caused by raising chickens and other poultry in photovoltaic fields in the Shagohuang area; the walking chicken cage and the closed sand-fixing net can prevent poultry such as chickens, ducks and geese from being harmed by wild animals such as foxes and eagles, thereby reducing the loss of poultry farming in photovoltaic animal husbandry. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic sand control wind and sand protection system provided by the present invention;

[0034] Figure 2 It is a schematic diagram of the installation of the hanging curtain type brush-shaped sand barrier provided by the present invention;

[0035] Figure 3 This is a front view of the hanging curtain type brush-shaped sand barrier provided by the present invention;

[0036] Figure 4 It is a top view of the hanging curtain type brush-shaped sand barrier provided by the present invention;

[0037] Figure 5 It is a structural schematic diagram of the walking chicken cage provided by the present invention;

[0038] Explanation of the accompanying drawings: 1. First sand barrier; 11. Straw bundle; 12. Lifting rope; 13. Fixed cross bar; 2. Closed sand fixation net; 3. Main wind direction; 4. First photovoltaic panel; 5. Ground; 6. Fence; 7. Walking chicken coop; 8. Second photovoltaic panel; 9. Second sand barrier. DETAILED DESCRIPTION

[0039] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0040] The present invention discloses a wind and sand protection system for photovoltaic sand control, which includes at least one protection unit, the protection unit includes a photovoltaic electric field, a closed sand-fixing net 2, a first sand barrier and a walking chicken cage. The photovoltaic electric field, the closed sand-fixing net 2 and the first sand barrier form a closed space, which can largely isolate the contact between the surface and the airflow in the electric field area, weaken or avoid the interaction between wind and sand, and can completely stabilize the surface, so as to solve the wind and sand hazards encountered in photovoltaic construction or photovoltaic sand control projects in mobile sand dune areas, especially sand burial hazards. The walking chicken cage is arranged in the closed space surrounded by the photovoltaic electric field, the closed sand-fixing net and the first sand barrier and rolls freely in the enclosed closed space, which can prevent chickens, ducks, geese and other poultry from being harmed by wild animals such as foxes and eagles, and reduce the loss of poultry breeding in photovoltaic animal husbandry.

[0041] On the basis of the above, the photovoltaic electric field includes at least two photovoltaic panels 4 arranged at intervals, and a plurality of the photovoltaic panels 4 are arranged in an array along a selected direction; the plurality of photovoltaic panels 4 can be arranged in an array with equal spacing or in an array with unequal spacing. The photovoltaic panels 4 are fixed on a photovoltaic bracket, and the photovoltaic bracket is fixed on the ground 5.

[0042] The closed sand-fixing net 2 is arranged between two adjacent photovoltaic panels 4 and connected to the two adjacent photovoltaic panels 4, closing the top space between the two adjacent photovoltaic panels 4, which can isolate the interaction between the airflow and the ground surface and reduce the sand and dust accumulated on the photovoltaic panels 4.

[0043] The top of the first sand barrier is connected to the first photovoltaic panel in a selected direction, and the bottom of the first sand barrier is connected to the ground. The selected direction is the direction of gas flow. The first sand barrier is arranged upwind of the photovoltaic panel, which can greatly weaken the wind force, block the sand coming from the upwind direction of the electric field, fix the quicksand on the surface near the sand barrier, reduce the harm of wind-blown sand inside the electric field, and play the effect of suppressing wind and blocking sand.

[0044] Specifically, the protection system includes a first sand barrier, a first photovoltaic panel, a closed sand fixation net and a second photovoltaic panel arranged in sequence along a selected direction, the top of the first sand barrier is connected to the first end of the first photovoltaic panel, the bottom end of the first sand barrier is connected to the ground, one end of the closed sand fixation net is connected to the second end of the first photovoltaic panel, and the other end of the closed sand fixation net is connected to the third end of the second photovoltaic panel, and the first sand barrier, the first photovoltaic panel, the closed sand fixation net and the second photovoltaic panel form a closed space.

[0045] In some embodiments, the closed sand-fixing net 2 includes a sand-fixing net and a hook, one end of the hook is connected to the sand-fixing net, and the other end is connected to the photovoltaic panel 4. In this embodiment, the hook is preferably an S-shaped hook. The hook is used to connect the sand-fixing net and the photovoltaic panel 4 because the hook is easy to hang and take. When the photovoltaic panel surface needs to be cleaned, the closed sand-fixing net 2 can be removed from one end of the lower edge of the photovoltaic bracket and re-hung after the flushing operation is completed. The sand-fixing net is a nylon net made of HDPE material; the porosity of the sand-fixing net is 30-60%, and the size of the sand-fixing net is not limited here. The sand-fixing net is customized according to the size of the space between the photovoltaic arrays and is made using a rope lock edge process. The sealing effect of the sand-fixing net can significantly reduce panel dust, reduce the frequency of cleaning photovoltaic panels, and at the same time increase soil moisture and temperature, promote the growth and reproduction of surface vegetation, crusts and microorganisms, and improve the inter-panel environment without affecting the normal operation and maintenance of the electric field.

[0046] On the basis of the above, the angle between the second photovoltaic panel and the closed sand-fixing net is 90-130 degrees; the inclination angle of the second photovoltaic panel is 30-50 degrees, the length of the second photovoltaic panel in the downwind direction is 2-5m, and the length of the closed sand-fixing net in the downwind direction is 3-15m. A triangle is formed with the closed sand-fixing net, the second photovoltaic panel and the horizontal plane as the sides. In the downwind direction, the closed sand-fixing net and the photovoltaic panel are sequentially spaced and distributed in large areas, forming a surface structure with undulating waves, which increases the surface roughness. Therefore, the structure effectively enhances the effect of suppressing wind force and slowing down surface wind erosion.

[0047] Based on the above, the angle between the first photovoltaic panel and the closed sand fixation net is 90-130 degrees

[0048] On the basis of the above, the inclination angle of the first photovoltaic panel is 30-50 degrees, and the height of the first sand barrier is 2-5m. The first photovoltaic panel, the sand barrier and the horizontal plane form a triangle. The sand barrier here uses the top edge of the photovoltaic bracket to fix the top of the sand barrier, and there is no need to set up special columns for the sand barrier. Here, the first sand barrier, the photovoltaic panel surface and the ground are combined to form a semi-closed triangular wind-blocking structure. When the airflow passes through the first sand barrier, a vortex is formed. In the triangular semi-closed space formed by the first sand barrier, the photovoltaic panel and the ground, the vortex is further weakened, the sand is further deposited, and the secondary sanding of the surface is suppressed.

[0049] On the basis of the above, the wind and sand protection system further includes a second sand barrier, which is arranged on the fence outside the photovoltaic field, and the second sand barrier and the protection unit are arranged in sequence along the selected direction. In actual use, the second sand barrier is arranged upwind of the first sand barrier, and the first sand barrier can intercept the quicksand that is not blocked by the second sand barrier upwind, thus becoming the second line of defense.

[0050] Specifically, the first sand barrier and the second sand barrier are curtain-type brush sand barriers, and the curtain-type sand barrier can be a curtain-type velvet sand barrier or a curtain-type brush sand barrier 1, preferably a curtain-type brush sand barrier 1, and the curtain-type brush sand barrier 1 includes a fixed crossbar 13 and at least one brush column arranged on the fixed crossbar 13. The fixed crossbar can be a pipe such as a steel pipe, a solid round rod made of PVC, a PVC pipe, an aluminum pipe or an iron pipe. The fixed crossbar 13 includes an upper fixed crossbar and a lower fixed crossbar. The lower fixed crossbar can be fixed to the ground surface by a U-shaped steel bar or by a pipe clamp. One end of the curtain-type brush sand barrier 1 is fixed to the upper fixed crossbar, and the other end is fixed to the lower fixed crossbar. A plurality of brush columns are tightly fixed between the upper fixed crossbar and the lower fixed crossbar to block the sand coming up from the electric field.

[0051] Wherein, the brush column is a straw brush column, and the straw brush column includes a suspension rope 12 and a straw bundle 11 twisted and fixed on the suspension rope 12, and the two ends of the suspension rope 12 are respectively connected to the upper fixed crossbar and the lower fixed crossbar; the suspension rope 12 and the straw bundle 11 are both elastic and flexible, and the straw bundle 11 is densely distributed along the length direction of the suspension rope 12, and the two ends of the straw bundle 11 extend to both sides of the suspension rope 12, so that the sand barrier can swing with the wind, which can greatly weaken the wind force, and is used to block the sand coming from the windward direction of the electric field, so that the quicksand is fixed on the surface near the sand barrier, reducing the harm of wind-blown sand inside the electric field, and the wind-suppressing and sand-blocking effect is significant. The length of the two ends of the straw bundle 11 extending to both sides of the suspension rope 12 is 10-20cm, the diameter of the straw brush column is 20-40cm, and the height of the straw brush column is 2-4m, and the height of the straw brush column depends on the height of the upper edge of the photovoltaic bracket from the ground surface.

[0052] The straw bundle 11 is composed of multiple plant stems, which can be one or more of wheat straw, rice straw or other plant stems. The diameter of the straw bundle 11 is 320 mm; the diameter of the hanging rope 12 is 25 cm, and the hanging rope can be a nylon rope or a straw rope. The length of the hanging rope 12 is 2.5-4.5 m. The straw bundle is composed of plant stems, so that the sand barrier is light in weight and can be hung on the photovoltaic bracket and the fence 6 without special columns. The material is environmentally friendly, low in cost and convenient in construction.

[0053] In some embodiments, the wind and sand protection system also includes a walking chicken cage 7, which can be spherical or spherical in shape, and is arranged in a closed space surrounded by a photovoltaic field, a closed sand fixation net and a first sand barrier and can roll freely in the enclosed space, and the poultry is placed in the walking chicken cage.

[0054] Specifically, the walking chicken cage 7 includes two hemispherical mesh covers, which are woven with materials such as steel wire, iron wire, rattan, bamboo strips or plastic strips. One end of the two hemispherical mesh covers is hinged (for example, hinged by a hinge), and the other end is connected by a locking member (for example, a fixed buckle), so that the two hemispherical mesh covers are combined into a sphere and can be opened. The diameter of the walking chicken cage 7 is 40-70cm, and the diameter of the walking chicken cage 7 is determined according to the size of the poultry being raised. Chickens and other poultry are placed in the sphere, and can walk and feed freely in the photovoltaic field without affecting the photovoltaic equipment, and they will not be harmed or eaten by wild animals.

[0055] The impact of the present invention on airflow mainly includes the following aspects:

[0056] First, the wind and sand flow is blocked and fixed by the second sand barrier, and the wind speed is weakened; the sand-containing airflow enters the closed space surrounded by the photovoltaic field, the closed sand-fixing net and the first sand barrier. The top airflow is blocked by the photovoltaic panels and the closed sand-fixing net, and its drag force on the bottom airflow disappears. In addition, under the action of surface friction, the bottom airflow will quickly slow down, and the small amount of quicksand carried by the residual wind and sand flow after passing through the second sand barrier will gradually deposit on the surface of this closed space; the remaining weak wind and sand flow continues to transport a small amount of sand particles into the photovoltaic field, but is blocked by the top photovoltaic panels and the closed sand-fixing net, and cannot merge with the top airflow to form a combined force, and will gradually disappear during the transportation process into the photovoltaic field.

[0057] Secondly, in the downwind direction, the closed sand-fixing nets and photovoltaic panels are distributed in large areas at intervals, forming an undulating wave-like surface structure, which increases the surface roughness. Therefore, this structure also effectively enhances the effect of suppressing wind force and slowing surface wind erosion.

[0058] In addition, the first sand barrier, photovoltaic panel surface and the ground combine to form a semi-closed triangular wind-blocking structure. When the airflow passes through the first sand barrier, a vortex is formed. In the triangular semi-closed space formed by the first sand barrier, photovoltaic panel and the ground, the vortex is further weakened, the sand is further deposited, and the secondary sand raising on the surface is suppressed.

[0059] The special closed space structures (triangle, wave shape) formed above can isolate the interaction between airflow and the ground surface, reduce wind energy, and settle sand particles. Therefore, the system can weaken the airflow and effectively realize wind and sand protection of photovoltaic fields.

[0060] As time goes by, a sand accumulation belt will gradually form in front and behind the second sand barrier set on the mesh fence, where a large amount of quicksand will be deposited, and the surface inside the electric field will also be covered by a small amount of quicksand. Therefore, a third and fourth sand barriers can be added on the upwind side of the second sand barrier, that is, outside the project, to intercept a large amount of quicksand outside the electric field as much as possible, and only a small amount of it will enter the electric field and be deposited on the surface of the enclosed space.

[0061] Embodiment 1:

[0062] like Figure 1 As shown, a photovoltaic sand control wind and sand protection system includes a protection unit, wherein the protection unit includes a first sand barrier 1, a first photovoltaic panel 4, a closed sand fixation net 2, and a second photovoltaic panel 8 ( Figure 1 The direction of the middle arrow is the main wind direction 3), the top of the first sand barrier 1 is connected to the first end of the first photovoltaic panel 4, the bottom end of the first sand barrier 1 is connected to the ground, one end of the closed sand fixation net 2 is connected to the second end of the first photovoltaic panel 4, and the other end of the closed sand fixation net 2 is connected to the third end of the second photovoltaic panel 8. The first sand barrier 1, the first photovoltaic panel 4, the closed sand fixation net 2 and the second photovoltaic panel 8 form a closed space, and a walking chicken cage 7 is arranged in the enclosed space, and a second sand barrier 9 is arranged on the fence upwind of the first sand barrier 1.

[0063] The closed sand-fixing net 2 includes a sand-fixing net and a hook. One end of the sand-fixing net is hung on the lower edge of the photovoltaic bracket of the photovoltaic panel 4 in the upwind direction using an S-shaped hook, and the other end is hung on the upper edge of the photovoltaic bracket of the photovoltaic panel 4 in the downwind direction using an S-shaped hook to achieve the top space between two adjacent photovoltaic panels 4. The sand-fixing net is a nylon net made of HDPE; the porosity of the sand-fixing net is 50%.

[0064] like Figure 2 , Figure 3As shown, the first sand barrier 1 and the second sand barrier 9 are curtain-type brush-like sand barriers, and the curtain-type brush-like sand barrier 1 includes a fixed crossbar 13 and a plurality of brush columns arranged on the fixed crossbar 13. The fixed crossbar 13 includes an upper fixed crossbar and a lower fixed crossbar, the upper fixed crossbar is fixed to the upper edge of the photovoltaic bracket of the photovoltaic panel 4 and the crossbar extending from the top of the fence through a pipe clamp, and the lower fixed crossbar is fixed to the ground through a U-shaped steel chisel; one end of the curtain-type brush-like sand barrier 1 is fixed to the upper fixed crossbar, and the other end is fixed to the lower fixed crossbar, and a plurality of brush columns are tightly fixed between the upper fixed crossbar and the lower fixed crossbar to block the sand coming from the wind direction of the electric field.

[0065] like Figure 3 , Figure 4 As shown, the brush column is a straw brush column, which includes a hanging rope 12 and a straw bundle 11 twisted and fixed on the hanging rope 12, and the two ends of the hanging rope 12 are respectively connected to the upper fixed cross bar and the lower fixed cross bar; the hanging rope 12 and the straw bundle 11 are both elastic and flexible, and the straw bundles 11 are densely distributed along the length direction of the hanging rope 12, and the two ends of the straw bundle 11 extend to both sides of the hanging rope 12 and the length of the two ends of the straw bundle 11 extending to both sides of the hanging rope 12 is 15 cm, the diameter of the straw brush column is 30 m, and the height of the straw brush column is 3 m.

[0066] The straw bundle 11 is composed of a plurality of wheat straw stems, and the diameter of the straw bundle 11 is 15 mm. The hanging rope is a nylon rope, and the diameter of the hanging rope 12 is 3 cm, and the length of the hanging rope 12 is 4 m.

[0067] like Figure 5 As shown, the walking chicken cage 7 includes two hemispherical mesh covers, which are woven from rattan. One end of the two hemispherical mesh covers is hinged by a hinge, and the other end is connected by a fixed buckle. The diameter of the walking chicken cage 7 is 60 cm.

[0068] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic sand control system, characterized in that: The invention comprises at least one protection unit, wherein the protection unit comprises: A photovoltaic electric field, the photovoltaic electric field comprising two first photovoltaic panels and a second photovoltaic panel arranged at an interval; A closed sand-fixing net, wherein the closed sand-fixing net is arranged between the first photovoltaic panel and the second photovoltaic panel; A first sand barrier, wherein the first sand barrier is a curtain-type brush-shaped sand barrier, and the curtain-type brush-shaped sand barrier comprises a fixed crossbar and at least one brush column arranged on the fixed crossbar; The first sand barrier, the first photovoltaic panel, the closed sand-fixing net, and the second photovoltaic panel are sequentially arranged along the main wind direction, the top of the first sand barrier is connected to the first end of the first photovoltaic panel, the bottom of the first sand barrier is connected to the ground, one end of the closed sand-fixing net is connected to the second end of the first photovoltaic panel, and the other end of the closed sand-fixing net is connected to the first end of the second photovoltaic panel, the first photovoltaic panel, the closed sand-fixing net, and the second photovoltaic panel form a surface structure with undulating waves, and the first sand barrier, the first photovoltaic panel, the closed sand-fixing net, and the second photovoltaic panel enclose a closed space; A walking chicken cage is arranged in a closed space surrounded by a first sand barrier, a first photovoltaic panel, a closed sand fixation net and a second photovoltaic panel and can roll freely in the enclosed space.

2. A photovoltaic sand control wind and sand protection system according to claim 1, characterized in that: The angle between the second photovoltaic panel and the closed sand-fixing net is 90-130 degrees; the inclination angle of the second photovoltaic panel is 30-50 degrees, the length of the second photovoltaic panel in the downwind direction is 2-5m, and the length of the closed sand-fixing net in the downwind direction is 3-15m.

3. The photovoltaic sand control wind and sand protection system according to claim 1 is characterized in that: The angle between the first photovoltaic panel and the closed sand-fixing net is 90-130 degrees; the inclination angle of the first photovoltaic panel is 30-50 degrees, and the height of the first sand barrier is 2-5m.

4. The photovoltaic sand control wind and sand protection system according to claim 1, characterized in that: The wind and sand protection system also includes a second sand barrier, the second sand barrier and the protection unit are arranged in sequence along the main wind direction, and the second sand barrier is arranged on the fence outside the photovoltaic field.

5. A photovoltaic sand control wind and sand protection system according to claim 4, characterized in that: The second sand barrier is a hanging curtain-type brush-shaped sand barrier.

6. A photovoltaic sand control wind and sand protection system according to claim 1, characterized in that: The fixed cross bar includes an upper fixed cross bar and a lower fixed cross bar, the upper fixed cross bar is fixed on the photovoltaic panel or the fence, and the lower fixed cross bar is fixed on the ground; one end of the hanging curtain-type brush-like sand barrier is fixed on the upper fixed cross bar, and the other end is fixed on the lower fixed cross bar.

7. The photovoltaic sand control wind and sand protection system according to claim 1, characterized in that: The brush column is a straw brush column.

8. A photovoltaic sand control wind and sand protection system according to claim 7, characterized in that: The straw brush column comprises a hanging rope and a straw bundle twisted and fixed on the hanging rope, and two ends of the hanging rope are respectively connected to an upper fixed cross bar and a lower fixed cross bar.

9. A photovoltaic sand control wind and sand protection system according to claim 8, characterized in that: The hanging rope and the straw bundle are both elastic and flexible.

10. A photovoltaic sand control wind and sand protection system according to claim 8, characterized in that: The straw bundles are densely distributed along the length direction of the hanging rope, and two ends of the straw bundles extend to both sides of the hanging rope.

11. A photovoltaic sand control wind and sand protection system according to claim 8, characterized in that: The straw bundle consists of a plurality of plant stems.

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