Photovoltaic desertification control system for desert area

Abstract

The utility model provides a photovoltaic desertification control system in a desert area, and belongs to the technical field of desertification control. Comprising a photovoltaic power generation field area and a lockrand protection belt, and a photovoltaic panel is arranged in the photovoltaic power generation field area. Drought-enduring plants are planted in the lockrand protection belt, the lockrand protection belt comprises an overall protection belt and first part protection belts, the overall protection belt is arranged around the photovoltaic power generation field area in a closed mode, the length of the first part protection belts is smaller than that of the overall protection belt, and the first part protection belts are evenly arranged on the outer side of the overall protection belt at intervals. Through structural configuration optimization, the influence effect of wind and sand on photovoltaic modules in a photovoltaic power generation field can be reduced, the wind erosion phenomenon of a corresponding field area is improved, and the photovoltaic desertification control effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of desert control, and particularly relates to a photovoltaic desert control system in desert areas. Background Art

[0002] Photovoltaic desert control is a new desert control mode explored in recent years. Building a photovoltaic desert ecological power station or a power generation field in the desert is the main desert control mode.

[0003] In the prior art, the installation orientation of photovoltaic modules generally faces south to ensure their power generation effect. The photovoltaic module panels block direct sunlight, effectively reducing the evaporation of surface water in the desert. The shading effect can reduce the evaporation amount by 20%-30%. The photovoltaic power station in the desert area can not only bring power generation benefits, but also reduce the near-surface wind speed, alleviate the near-surface wind and sand degree to a certain extent. At the same time, the area under and between the photovoltaic panels can provide good conditions for biological desert control technology (afforestation for desert control).

[0004] However, the main wind direction in the area is generally northwest, and the photovoltaic modules arranged facing south have a small weakening effect on the northwest wind, which also aggravates the wind erosion phenomenon of the desert surface near the photovoltaic modules. And the frequent and intense wind and sand movement in the desert environment leads to serious dust accumulation on the surface of the photovoltaic panels, significantly reducing the photovoltaic power generation efficiency and service life, resulting in poor photovoltaic desert control effect. Summary of the Utility Model

[0005] The embodiment of the utility model provides a photovoltaic desert control system in desert areas, which optimizes the structural configuration to reduce the influence of wind and sand on the photovoltaic modules in the photovoltaic power generation field, improves the wind erosion phenomenon in the corresponding field area, and improves the photovoltaic desert control effect. The technical solution is as follows:

[0006] The embodiment of the utility model provides a photovoltaic desert control system in desert areas, including: a photovoltaic power generation field area, with photovoltaic panels arranged inside;

[0007] A side protection belt, in which drought-tolerant plants are planted. The side protection belt includes an overall protection belt and a first partial protection belt. The overall protection belt is arranged around the photovoltaic power generation field area in a closed manner. The length of the first partial protection belt is less than that of the overall protection belt. There are multiple first partial protection belts, and they are evenly spaced outside the overall protection belt.

[0008] Optionally, in the direction close to the photovoltaic power generation field area, the lengths of the multiple first partial protection belts gradually increase.

[0009] Optionally, the side protection belt further includes a second partial protection belt. The length of the second partial protection belt is less than that of the overall protection belt. The second partial protection belt is spaced in the south direction of the overall protection belt.

[0010] Optionally, the number of the first part of the protective belts is greater than that of the second part of the protective belts.

[0011] Optionally, the width range of the edge-locked protective belts is 2 to 4.5 m, and the spacing range between the edge-locked protective belts is 15 to 36 m.

[0012] Optionally, the photovoltaic desert control system in the desert area further includes a main road, the main road spans the edge-locked protective belts and is connected to the photovoltaic power generation field area, road protective belts are arranged on both sides of the main road, and drought-resistant plants are planted in the road protective belts.

[0013] Optionally, the photovoltaic panels are arranged at angular intervals with respect to the ground and are connected to the ground through photovoltaic brackets. Vegetation belts are arranged on the ground below and in front of the photovoltaic panels, and drought-resistant plants are planted in the vegetation belts.

[0014] Optionally, a water guide groove is arranged on one side edge of the photovoltaic panel close to the ground, and a plurality of water guide openings facing the vegetation belt are arranged on the water guide groove.

[0015] Optionally, the photovoltaic desert control system in the desert area further includes a water collector, the water collector includes a cylinder body, a gravel layer, a filter layer and a support member which are arranged in the cylinder body from top to bottom, a plurality of water outlets are evenly arranged at intervals on the side wall of the bottom of the cylinder body, and the cylinder body is buried in the ground soil below the water guide opening.

[0016] Optionally, a wind shield is arranged on the photovoltaic bracket.

[0017] The beneficial effects brought by the technical solution provided by the embodiment of the present utility model at least include:

[0018] The photovoltaic sand control system in this desert area is differentially arranged according to the wind conditions in the area where the photovoltaic power generation field is located. Photovoltaic panels for solar power generation and sand and wind blocking are provided in the photovoltaic power generation field area. By setting a lock-edge protection belt outside the photovoltaic panels and planting arbor tree species with developed roots and drought tolerance, such as Salix matsudana and Robinia pseudoacacia, around the photovoltaic power generation field area in a closed layout, the external sand and wind can be blocked. The ash accumulation on the surface of the photovoltaic panels is alleviated, the cleaning frequency is reduced, and the waste of traditional resources such as cleaning water and electricity is reduced. For the dominant wind direction in the area, on the basis of planting the overall protection belt, multiple layers of the first part of the protection belt are additionally planted along the wind direction, that is, the corresponding direction of the photovoltaic power generation field area, outside the overall protection belt to effectively reduce the wind speed of the dominant wind direction and block the sand and wind it brings, reducing the impact on the operation of the photovoltaic surface and the wind erosion phenomenon on the ground below. By optimizing the configuration of the photovoltaic and plant sand control structures, the impact of sand and wind on the photovoltaic components in the photovoltaic power generation field is reduced, the wind erosion phenomenon in the photovoltaic power generation field area in the applicable region is improved, and the photovoltaic sand control effect is enhanced. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the overall structure of the photovoltaic sand control system in the desert area provided by the embodiment of the present utility model;

[0021] Figure 2 It is a schematic side view structure diagram of the photovoltaic power generation field area provided by the embodiment of the present utility model;

[0022] Figure 3 It is a schematic three-dimensional structure diagram of the photovoltaic power generation field area provided by the embodiment of the present utility model;

[0023] Figure 4 It is a schematic structure diagram of the water collector provided by the embodiment of the present utility model.

[0024] In the figure: 1 - Photovoltaic power generation field area; 2 - Lock-edge protection belt; 3 - Main road; 11 - Photovoltaic panel; 12 - Vegetation belt; 13 - Water collector; 21 - Overall protection belt; 22 - First part of the protection belt; 23 - Second part of the protection belt; 31 - Road protection belt; 111 - Photovoltaic support; 112 - Water guide groove; 113 - Windshield; 131 - Cylinder body; 132 - Gravel layer; 133 - Filter layer; 134 - Support member; 135 - Water outlet; 1121 - Water guide port. Detailed Embodiment

[0025] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the photovoltaic desert control system provided by the embodiment of the present utility model; Figure 2 It is a schematic side view structure diagram of the photovoltaic power generation field area provided by the embodiment of the present utility model;

[0027] Figure 3 It is a schematic three-dimensional structure diagram of the photovoltaic power generation field area provided by the embodiment of the present utility model; Figure 4 It is a schematic structure diagram of the water collector provided by the embodiment of the present utility model. As Figures 1 to 4 shown, the embodiment of the present utility model provides a photovoltaic desert control system in desert areas, including a photovoltaic power generation field area 1 and a border protection belt 2.

[0028] Among them, a photovoltaic panel 11 is arranged inside the photovoltaic power generation field area 1. Drought-resistant plants are planted in the border protection belt 2. The border protection belt 2 includes an overall protection belt 21 and a first partial protection belt 22. The overall protection belt 21 is arranged around the photovoltaic power generation field area 1 in a closed manner. The length of the first partial protection belt 22 is less than that of the overall protection belt 21. There are multiple first partial protection belts 22, and they are evenly spaced outside the overall protection belt 21.

[0029] In the embodiment of the present utility model, the photovoltaic desert control system in the desert area is differentially arranged according to the wind conditions in the area where the photovoltaic power generation field area 1 is located. For example, taking the area applicable to the embodiment of the present utility model as an example, photovoltaic panels 11 for solar power generation and sand and wind blocking are provided in the photovoltaic power generation field area 1. The photovoltaic panels 11 are installed facing south to ensure the highest solar energy recovery efficiency. By arranging a border protection belt 2 outside the photovoltaic panels 11 and planting arbor tree species with developed roots and drought tolerance, such as Salix matsudana and Robinia pseudoacacia, around the photovoltaic power generation field area 1 in a closed manner, the external sand and wind can be blocked. The dust accumulation on the surface of the photovoltaic panels 11 is alleviated, the cleaning frequency is reduced, and the waste of traditional resources such as cleaning water and electricity is reduced. For the region-specific northwest wind-dominated wind direction, on the basis of planting a square-shaped overall protection belt 21 around the outer layer of the photovoltaic power generation field area 1, along the wind direction, that is, the northwest direction of the photovoltaic power generation field area 1, multiple layers of the first part of the protection belt 22 are additionally planted outside the overall protection belt 21 to effectively reduce the wind speed in the northwest direction and block the sand and wind brought by it, reducing the impact on the operation of the photovoltaic surface 11 and the wind erosion phenomenon on the ground below. By optimizing the configuration of the photovoltaic and plant desert control structures, the influence of sand and wind on the photovoltaic components in the photovoltaic power generation field is reduced, the wind erosion phenomenon in the photovoltaic power generation field area 1 in the applicable region is improved, and the photovoltaic desert control effect is enhanced.

[0030] It should be noted that in other regions, the position of the first part of the protection belt 22 on the outer layer can also be adjusted according to the dominant wind direction of the corresponding region to ensure the sand and wind blocking effect. The embodiment of the present invention does not limit its specific position and direction.

[0031] Optionally, in the direction close to the photovoltaic power generation field area 1, the lengths of the multiple first parts of the protection belt 22 gradually increase. Exemplarily, in the embodiment of the present utility model, there are two layers of the overall protection belt 21 that completely surrounds the photovoltaic power generation field area 1. In the main wind prevention direction, that is, the northwest direction, two additional layers of the first part of the protection belt 22 are provided to form a four-layer protection belt structure of two layers of the first part of the protection belt 22 and two layers of the overall protection belt 21 to ensure the optimal sand and wind prevention effect. Further, considering the layout cost and the need for better wind prevention effect close to the core photovoltaic power generation field area 1, one layer of the first part of the protection belt 22 close to the overall protection belt 21 is set relatively long and arranged parallel to the two side edges of the overall protection belt 21 facing the north and west to form a three-layer protection belt structure in the directions of west wind, northwest by west wind, northwest by north wind, and north wind, and stably block the winds with relatively the same annual wind direction proportion in the above directions. In the remaining directions, two layers of protection belts are set up according to the normal situation and together form the border protection belt 2, achieving the photovoltaic desert control effect of efficient wind and sand prevention on the basis of ensuring the planting and maintenance costs.

[0032] Optionally, the edge-locking protection belt 2 further includes a second part of the protection belt 23. The length of the second part of the protection belt 23 is less than the length of the overall protection belt 21. The second part of the protection belt 23 is arranged at intervals in the south direction of the overall protection belt 21. Further, considering that the south direction is the main windward direction of the photovoltaic panel 11, and the annual wind direction proportion of the south wind in the region is basically the same as that of the west wind, the northwest by west wind, the northwest by north wind, and the north wind directions, a layer of the second part of the protection belt 23 is also arranged in parallel at intervals on the outer side of the overall protection belt 21 in the south direction, forming a three-layer protection belt structure to further improve the wind and sand prevention effect.

[0033] Optionally, the width range of the edge-locking protection belt 2 is 2 to 4.5 m, and the spacing range between the edge-locking protection belts 2 is 15 to 36 m. Exemplarily, in the embodiment of the present invention, a two-row-one-belt planting mode is adopted in both the overall protection belt 21, the first part of the protection belt 22, and the second part of the protection belt 23, that is, two rows of drought-tolerant arbors with a spacing range of 2 to 4.5 m are planted on both sides along the extension direction of the setting, and grass or shrubs are planted in between. The two rows of arbors are planted alternately along the extension direction to ensure the normal growth of the plants between the rows and a vegetation coverage rate of 20% to 25%. The planting spacing between adjacent overall protection belts 21, between the overall protection belt 21 and the first part of the protection belt 22, between the overall protection belt 21 and the second part of the protection belt 23, and between adjacent first parts of the protection belt 22 is 15 to 36 m, which depends on the specific tree species to be planted, and the present invention does not limit this.

[0034] Optionally, the photovoltaic desert control system in the desert area further includes a main road 3. The main road 3 crosses the edge-locking protection belt 2 and is connected to the photovoltaic power generation field area 1. Road protection belts 31 are arranged on both sides of the main road 3, and drought-tolerant plants are planted in the road protection belts 31. Exemplarily, in the embodiment of the present invention, the main road 3 is set up by separately opening up across multiple layers of the overall protection belt 21 for external personnel and vehicles to enter and exit the photovoltaic power generation field area 1. Among them, the main road 3 can preferably be set at the corner of the overall protection belt 21 surrounded in a square shape to avoid interference and conflict with other paragraphs of the edge-locking protection belt 2 and facilitate the entry and exit of personnel and vehicles. At the same time, drought-tolerant plants are also correspondingly planted on both sides of the main road 3, such as road protection belts 31 planted with shrubs or psammophytes in a longitudinal staggered mode to further reduce the wind speed and block the wind and sand.

[0035] Optionally, the photovoltaic panel 11 is arranged at an angular interval with respect to the ground and is connected to the ground through a photovoltaic support 111. A vegetation belt 12 is provided on the ground below and in front of the photovoltaic panel 11, and drought-tolerant plants are planted in the vegetation belt 12. Exemplarily, in the implementation of the present utility model, multiple groups of photovoltaic panels 11 can be arranged on the ground in the photovoltaic power generation field area 1 to form a photovoltaic module array. In the area below the photovoltaic panel 11 and in front of the windward side, enriched soil with a predetermined thickness is backfilled. Shrubs, semi-shrubs or psammophytes, such as Caragana korshinskii and Hedysarum scoparium, are planted in the vegetation belt 12 on the windward side; while shade-loving plants are planted in the vegetation belt 12 below the photovoltaic panel 11. On the basis of ensuring the survival rate of the vegetation, the influence of the wind erosion effect in the bottom area of the photovoltaic panel 11 is reduced.

[0036] Exemplarily, according to the front-to-back arrangement spacing of the photovoltaic panels 11 in the photovoltaic power generation field area 1, it can be adaptively arranged according to the latitude of the region. The specific arrangement spacing in the embodiment of the present utility model is not limited.

[0037] Optionally, a water guide groove 112 is provided on one side edge of the photovoltaic panel 11 close to the ground, and a plurality of water guide openings 1121 facing the vegetation belt 12 are provided on the water guide groove 112. Exemplarily, in most regions, the precipitation is less than 400 mm, the rainwater is scarce and the evaporation is relatively fast, resulting in a low survival rate of the vegetation below the photovoltaic panel 11 in the photovoltaic desert control system. By providing a water guide groove 112 at the lower front end of the inclined photovoltaic panel 11 with a lower height, and at the same time, a water collector 13 buried in the ground soil is provided below the water guide opening 1121 of the water guide groove 112. It is used to divert the precipitation in the area and the water for cleaning the photovoltaic module to the water collector 13 installed between the vegetation belt 12 at the front end of the photovoltaic panel 11 and the vegetation belt 12 at the bottom. The water collector 13 includes a cylinder body 131, a gravel layer 132, a filter layer 133 and a support member 134 arranged in the cylinder body 131 from top to bottom. A plurality of water outlet openings 135 are evenly spaced on the bottom side wall of the cylinder body 131. The support member 134 can support the gravel layer 132 and the filter layer 133. The gravel layer 132 can preliminarily filter the collected water and is not easy to lose. The filter layer 133 further filters the water. The two-stage filtration can improve the cleanliness of the water and avoid the accumulation of dust and other impurities at the bottom of the water collector 13, affecting the water collection effect. Finally, the collected water is infiltrated and irrigated around through the water outlet openings 135 at the bottom of the cylinder body 131 to ensure uniform and sufficient water supply, improve the survival rate of the plants in the vegetation belt 12, and at the same time reduce the irrigation water consumption.

[0038] Optionally, a wind baffle 113 is provided on the photovoltaic support 111. Exemplarily, in the embodiment of the present invention, there are two photovoltaic supports 111 with different lengths arranged at intervals below the inclined photovoltaic panel 11 for support. The height range of the shorter photovoltaic support 111 at the front end is 0.5 to 0.6 m. Between the shorter photovoltaic supports 111 near the front end, a wind baffle 113 structure is provided on the windward surface, and the height of the bottom of the wind baffle 113 from the ground ranges from 50 to 100 mm. By providing the wind baffle 113 and laying gravel under the shorter photovoltaic support 111 to shield the bottom of the photovoltaic panel 11, the influence of the wind erosion effect is further reduced.

[0039] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the field to which the present invention belongs. The "first", "second" and similar terms used in the description and claims of the present patent application for the invention do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a" or "an" do not denote a quantity limitation, but mean that there is at least one. The terms such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative position relationships, and when the absolute position of the object being described changes, the relative position relationships may also change accordingly.

[0040] The above are only the optional embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic sand control system in desert areas, characterized in that, Comprising: A photovoltaic power generation field area (1) with photovoltaic panels (11) installed inside; A border protection belt (2), in which drought-tolerant plants are planted. The border protection belt (2) includes an overall protection belt (21) and a first partial protection belt (22). The overall protection belt (21) is arranged around the photovoltaic power generation field area (1) in a closed manner. The length of the first partial protection belt (22) is less than that of the overall protection belt (21). There are multiple first partial protection belts (22), which are evenly spaced and arranged outside the overall protection belt (21).

2. The photovoltaic sand control system in desert areas according to claim 1, wherein, In the direction close to the photovoltaic power generation field area (1), the lengths of the multiple first partial protection belts (22) gradually increase.

3. A photovoltaic desert control system according to claim 1, characterized in that, The border protection belt (2) further includes a second partial protection belt (23). The length of the second partial protection belt (23) is less than that of the overall protection belt (21). The second partial protection belt (23) is spaced and arranged in the south direction of the overall protection belt (21).

4. The photovoltaic sand control system in desert areas according to claim 3, wherein The number of the first partial protection belts (22) is greater than that of the second partial protection belts (23).

5. A photovoltaic sand control system in desert areas according to claim 1, characterized in that, The width range of the border protection belt (2) is 2 to 4.5 m, and the spacing range between the border protection belts (2) is 15 to 36 m.

6. The photovoltaic sand control system in desert areas according to claim 1, characterized in that, The desert area photovoltaic sand control system further includes a main road (3). The main road (3) crosses the border protection belt (2) and is connected to the photovoltaic power generation field area (1). Road protection belts (31) are arranged on both sides of the main road (3), and drought-tolerant plants are planted in the road protection belts (31).

7. The photovoltaic desert control system according to any one of claims 1 to 6, characterized in that, The photovoltaic panels (11) are arranged at angular intervals with the ground and are connected to the ground through photovoltaic brackets (111). Vegetation belts (12) are arranged on the ground below and in front of the photovoltaic panels (11), and drought-tolerant plants are planted in the vegetation belts (12).

8. The photovoltaic sand control system in the desert area according to claim 7, characterized in that, A water guide groove (112) is arranged on the edge of the photovoltaic panel (11) close to the ground, and multiple water guide openings (1121) facing the vegetation belt (12) are arranged on the water guide groove (112).

9. The photovoltaic desert control system according to claim 8, characterized in that, The desert area photovoltaic sand control system further includes a water collector (13). The water collector (13) includes a cylinder body (131) and a gravel layer (132), a filter layer (133) and a support member (134) arranged in the cylinder body (131) from top to bottom. Multiple water outlets (135) are evenly spaced and arranged on the bottom side wall of the cylinder body (131). The cylinder body (131) is buried in the ground soil below the water guide openings (1121).

10. The photovoltaic sand control system in desert areas according to claim 7, characterized in that, A wind shield (113) is arranged on the photovoltaic bracket (111).

Images