Water collecting, corrosion reducing and repairing multifunctional system for hill photovoltaic area

Abstract

The invention discloses a water collection, corrosion reduction and restoration multifunctional system for a hill photovoltaic area, and belongs to the technical field of photovoltaic area ecological restoration. The system comprises a photovoltaic power generation system arranged in a photovoltaic area, a water collecting tank, a water storage tank and a self-flow irrigation device, the self-flowing irrigation device is arranged on one side of the photovoltaic power generation system; rainwater is conveyed into the water collecting pool through the photovoltaic power generation system, filtered rainwater in the water collecting pool is pumped through the water storage pool and conveyed into the self-flowing irrigation device, and self-flowing irrigation is conducted on vegetation below the photovoltaic power generation system and fruit-bearing forests on a hillside through the self-flowing irrigation device. According to the system, rainfall can be effectively collected, irrigation management is optimized, the erosion resistance of soil is remarkably improved, and the regional water consumption and irrigation requirements are effectively balanced.

Description

Technical Field

[0001] The present invention belongs to the technical field of ecological restoration in photovoltaic areas, and particularly relates to a multifunctional system for water collection, erosion reduction, and restoration in hilly photovoltaic areas. Background Art

[0002] Compared with traditional power generation methods, solar photovoltaic power generation has advantages such as being green, low-carbon, and environmentally friendly. It can not only reduce the consumption of non-renewable energy such as coal and fossil fuels, but also reduce environmental pollution and improve the utilization rate of land and resources. However, in the construction of mountain photovoltaic power stations, it is inevitable to disturb or even damage the landform, soil, and vegetation in the construction area, and in severe cases, soil erosion may be triggered.

[0003] Photovoltaic power stations in hilly areas are mostly located on slopes, with complex terrain and geological conditions, which makes the construction period longer than that of conventional photovoltaic power stations. At the same time, due to the terrain and underlying surface factors, the land is inevitably damaged during the construction process, resulting in a decrease in vegetation coverage and disturbance to the ground surface. During the operation of the photovoltaic power station, factors such as rainfall may also trigger soil erosion under the edges of the photovoltaic panels.

[0004] Existing photovoltaic solutions in the prior art are mostly structural design solutions, such as spiral steel pile foundations and flexible photovoltaic materials; at the same time, existing photovoltaics adopt the "photovoltaic + ecological restoration" model, using the sunny gentle slopes of mountains, and while arranging photovoltaic panels for power generation, attempting to combine vegetation restoration projects to promote regional ecological restoration, such as adopting a series of measures such as sowing grass seeds and improving the soil.

[0005] However, there are still some problems with the current photovoltaic solutions:

[0006] (1) During the installation of existing photovoltaics, due to the installation of brackets, excavation of collector lines, and construction and maintenance of roads, the original vegetation is often removed or occupied, and the soil and water conservation facilities are also damaged, resulting in a decrease in the anti-erosion ability of the landform and vegetation, and a significant increase in soil erosion. In addition, the excavation and backfilling of earthwork make the topsoil structure loose and prone to soil and water loss.

[0007] (2) During the installation of photovoltaic panels, there are large gaps between the upper, lower, left, and right. When it rains, rainwater directly washes the soil below the gaps, which may trigger surface erosion or gully erosion. At the same time, due to the characteristics of the photovoltaic panel material, rainwater forms a sheet flow on the panel surface, and when it drops to the ground from the edge of the panel, it causes a strong impact on the soil. Since the hilly photovoltaic panels are built along the mountain, the height difference of the photovoltaic panels is large, and the lowest point is relatively high from the ground, further aggravating the impact of rainwater.

[0008] (3) Rainfall in hilly areas is mainly orographic rain, with uneven time distribution, mostly concentrated in summer. Although existing photovoltaic technology solutions have made progress in environmental protection and construction efficiency, there are deficiencies in ecological restoration and rainwater management, and the terrain and rainfall factors in hilly areas should be taken into account.

[0009] (4)Due to topographical factors, there are often large gaps between the left and right photovoltaic panels in the hilly photovoltaic area. The existing photovoltaic rainwater collection devices usually only focus on the lower end of the photovoltaic panels in design, and set up water collection troughs to collect the rainwater flowing down from the surface of the photovoltaic panels. This design results in insufficient soil protection between the left and right gaps of the photovoltaic panels, and at the same time, there are problems of limited water collection range and low rainwater collection efficiency.

[0010] (5)Most of the existing vegetation restoration schemes in photovoltaic areas use the method of sowing grass seeds for greening and vegetation coverage. Although the vegetation coverage rate has been improved to a certain extent, the special lighting conditions under the photovoltaic panels and the irrigation guarantee required for vegetation growth have not been fully considered, resulting in limited ecological restoration effects and difficulty in achieving long-term and stable ecological restoration goals. Summary of the Invention

[0011] In view of the problems mentioned in the background technology, the present invention proposes a multi-functional system for water collection, erosion reduction and restoration in hilly photovoltaic areas. By setting up a photovoltaic power generation system, a water collection pool, a storage pool and a gravity irrigation device, rainfall can be effectively collected, irrigation management can be optimized, the soil erosion resistance ability can be significantly improved, and the regional water use and irrigation requirements can be effectively balanced.

[0012] Technical Solution: In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0013] A multi-functional system for water collection, erosion reduction and restoration in hilly photovoltaic areas, including a photovoltaic power generation system, a water collection pool, a storage pool and a gravity irrigation device arranged in the photovoltaic area; the gravity irrigation device is arranged on one side of the photovoltaic power generation system; the photovoltaic power generation system transports rainwater into the water collection pool, the storage pool pumps the filtered rainwater in the water collection pool into the gravity irrigation device, and the gravity irrigation device conducts gravity irrigation on the vegetation under the photovoltaic power generation system and the economic fruit forests on the hillside.

[0014] Preferably, the photovoltaic power generation system includes an installation bracket, a photovoltaic bracket, a support frame and a storage battery; the installation bracket is fixed on the hillside, the support frame is arranged on the installation bracket, the photovoltaic bracket is arranged on the support frame, and the storage battery is arranged on the installation bracket.

[0015] Preferably, a drainage channel is arranged under the photovoltaic power generation system, and the drainage channel is inclined from top to bottom on the hillside.

[0016] Preferably, an energy dissipation gravel cushion layer is arranged in the drainage channel.

[0017] Preferably, a photovoltaic panel is fixedly installed in the photovoltaic bracket, a water collection trough is arranged on the photovoltaic bracket, a U-shaped drain pipe is fixedly inserted at the bottom end of the water collection trough, and one end of the U-shaped drain pipe is located above the drainage channel.

[0018] Preferably, a diversion channel, a water suction pipe, and a controller are provided on the sump, a filter screen and a liquid level sensor are provided in the sump, and the controller is connected to the liquid level sensor.

[0019] Preferably, a water pump is provided at the water inlet end of the reservoir, and the water pump is connected to the water suction pipe.

[0020] Preferably, the gravity irrigation device includes an irrigation pipe, a delivery pipe, a diversion pipe, a water connection pipe, and a sprinkler head; a delivery pipe is provided at the side end of the irrigation pipe, and one end of the delivery pipe communicates with the reservoir; a diversion pipe is provided below the irrigation pipe, and the diversion pipe is communicated with the irrigation pipe through the water connection pipe; a plurality of sprinkler heads are provided on one side of the diversion pipe.

[0021] Preferably, the storage battery is connected to the controller, the liquid level sensor, and the water pump.

[0022] Advantageous effects: Compared with the prior art, the present invention has the following advantages:

[0023] (1) The present invention provides a dedicated catchment tank and reservoir system, which not only effectively collects rainfall, reduces the erosion of surface soil by rainwater through a drainage channel with an energy dissipation structure, but also uses the collected rainwater for vegetation irrigation under the photovoltaic panels and surrounding agricultural irrigation; this system can significantly reduce the risk of soil erosion and effectively balance the regional water use and irrigation needs.

[0024] (2) The present invention specifically provides a catchment tank between the left and right photovoltaic panels for collecting rainwater flowing down from the gaps between the photovoltaic panels; the catchment tank is also connected to the drainage pipe at the lower end of the photovoltaic panel to divert the rainwater to a water storage device (such as a reservoir); the entire system has a compact structure and a reasonable layout; this design effectively makes up for the deficiencies of traditional rainwater collection devices and realizes more comprehensive rainwater management.

[0025] (3) The present invention combines the construction of a photovoltaic power station with ecological restoration measures, fully considers the ecological characteristics of mountainous areas, selects shade-loving plants suitable for humid environments, such as ferns and shade-tolerant herbs, and implements a vegetation irrigation system under the photovoltaic panels, effectively accelerating the vegetation restoration speed and improving the vegetation restoration quality after photovoltaic construction; by scientifically sowing grass seeds, accurately selecting shade-loving plants, and optimizing irrigation management in the shaded environment of the photovoltaic panels, the soil erosion resistance ability is significantly improved, providing excellent technical support for the coordinated development of photovoltaic power stations and ecological protection.

[0026] (4) The system of the present invention realizes gravity irrigation through the design of a high-position reservoir, effectively reducing the dependence on external power and facilities and reducing the irrigation cost; in the case of scarce water sources in mountainous areas, the rainwater collection and reuse system of the present invention not only solves the agricultural irrigation problem, enhances the ability of ecological restoration, but also improves the sustainability of the photovoltaic power station. Brief Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the system of the present invention;

[0028] Figure 2 is a schematic structural diagram of the photovoltaic power generation system of the present invention;

[0029] Figure 3 is a schematic structural diagram of the structure at the water collecting tank of the present invention;

[0030] Figure 4 is a schematic structural diagram of the structure at the energy dissipation gravel cushion of the present invention;

[0031] Figure 5 is a schematic structural diagram of the internal structure of the water collecting pool of the present invention;

[0032] Figure 6 is a schematic structural diagram of the gravity irrigation device of the present invention;

[0033] In the figure: 1, photovoltaic power generation system; 2, water collecting pool; 3, storage pool; 4, gravity irrigation device; 5, diversion channel; 6, drainage channel; 7, water extraction pipe; 8, water extraction pump; 9, installation bracket; 10, photovoltaic bracket; 11, support frame; 12, photovoltaic panel; 13, storage battery; 14, water collecting tank; 15, U-shaped drain pipe; 16, energy dissipation gravel cushion; 17, filter screen; 18, liquid level sensor; 19, controller; 20, irrigation pipe; 21, conveying pipe; 22, shunt pipe; 23, water passing pipe; 24, sprinkler head. Detailed Embodiments

[0034] The following further clarifies the present invention in conjunction with specific embodiments. The embodiments are implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0035] As Figures 1 - 6 shown, the multifunctional system for water collection, erosion reduction and restoration in the hilly photovoltaic area provided in this embodiment mainly includes a photovoltaic power generation system 1, a water collecting pool 2, a storage pool 3, and a gravity irrigation device 4; the photovoltaic power generation system 1 is installed on the top of the hill, the storage pool 2 is installed at the foot of the hill slope, the storage pool 3 is installed at a high position on the hill, and the gravity irrigation device 4 is installed on one side of the photovoltaic power generation system 1.

[0036] In this embodiment, the number of the photovoltaic power generation systems 1 is multiple.

[0037] As Figure 1As shown in the figure, a diversion channel 5 is provided at the water inlet end of the sump 2, and drainage channels 6 are provided below each of the multiple photovoltaic power generation systems 1. The drainage channels 6 are arranged obliquely from top to bottom on the hillside, and the multiple drainage channels 6 are all connected to the diversion channel 5. A water extraction pipe 7 is provided at the water outlet end of the sump 2, and a water extraction pump 8 is provided at the water inlet end of the reservoir 3. One end of the water extraction pump 8 is connected to the water extraction pipe 7.

[0038] In this embodiment, the photovoltaic power generation system 1 is installed on the top of the hill to achieve self-generation of solar energy. Shade-loving plants are planted below the photovoltaic power generation system 1 for ecological restoration. The photovoltaic power generation system 1 is used to collect rainwater. The collected rainwater is discharged into the diversion channel 5 through the drainage channel 6. The diversion channel 5 is used to divert the rainwater into the sump 2. The water extraction pump 8 is started to pump the water in the sump 2 into the reservoir 3 through the water extraction pipe 7, and then the vegetation below the photovoltaic power generation system 1 and the economic fruit forest on the hillside are irrigated by gravity through the gravity irrigation device 4.

[0039] As Figure 2 shown, the photovoltaic power generation system 1 includes a mounting bracket 9, a photovoltaic bracket 10, a support frame 11, and a storage battery 13. The mounting bracket 9 is fixed to the hill ground by screws. The support frame 11 is rectangular and is arranged on the mounting bracket 9. A photovoltaic bracket 10 is provided at the upper end of the support frame 11, and the storage battery is arranged on the mounting bracket 9. The photovoltaic bracket 10 and the mounting bracket 9 are fixedly connected by four support frames 11 arranged in a rectangle.

[0040] In this embodiment, the number of support frames is four.

[0041] As Figure 2 、 Figure 3 shown, a photovoltaic panel 12 is fixedly installed in the photovoltaic bracket 10. Water collecting grooves 14 are opened in both the horizontal and vertical directions at the top of the photovoltaic bracket 10. The water collecting grooves 14 in the horizontal and vertical directions are all connected and communicated. A U-shaped drain pipe 15 is fixedly inserted at the bottom end of the water collecting groove 14, and one end of the U-shaped drain pipe 15 is located above the drainage channel 6.

[0042] Rainwater is collected through the water collecting grooves 14 in the horizontal and vertical directions provided on the photovoltaic bracket 10. The collected rainwater flows towards the U-shaped drain pipe 15 under the guidance of the water collecting grooves 14 on the inclined photovoltaic bracket 10, and the U-shaped drain pipe 15 diverts the rainwater into the drainage channel 6 below.

[0043] As Figure 4As shown in the figure, an energy dissipation gravel cushion layer 16 is provided in the drainage channel 6. The energy dissipation gravel cushion layer 16 is filled with gravel with a thickness of 0.5 m and a particle size d in the range of 20 mm to 80 mm. The bottom layer is gravel with a particle size of 20 - 40 mm arranged in a honeycomb pattern as an impact buffer layer (porosity ≤ 25%), and the multi-directional scattering of water flow is achieved by roughening the surface; the middle layer is 40 - 60 mm spiral-graded gravel for the mainstream energy; the top layer is 60 - 80 mm gravel and a flexible grid to form a three-dimensional interlock to ensure stable infiltration. The energy dissipation of the water flow impact is achieved through the energy dissipation gravel cushion layer 16 in the drainage channel 6, avoiding the damage to the drainage channel 6 caused by directly impacting the drainage channel 6.

[0044] As Figure 5 shown, a filter net 17 is fixedly connected to the inner top of the sump 2. The filter net 17 is arranged below the diversion channel 5. The water suction pipe 7 is fixedly inserted into one side of the bottom end of the sump 2. A liquid level sensor 18 is fixedly connected to one inner wall of the sump 2, and a controller 19 is fixedly connected to one outer wall of the sump 2. The output end of the liquid level sensor 18 is connected to the input end of the controller 19, and the output end of the controller 19 is connected to the input end of the water pump 8.

[0045] The collected rainwater is diverted to the sump 2 through the drainage channel 6. The filter net 17 installed inside the sump 2 filters impurities. The internal liquid level sensor 18 monitors the water level. When the monitored water level reaches the set threshold, a signal is sent to the controller 19. The controller 19 receives the signal and controls the start of the water pump 8. The water pump 8 uses the water suction pipe 7 to pump water into the storage pool 3.

[0046] As Figure 6 shown, the gravity irrigation device 4 includes an irrigation pipe 20, a delivery pipe 21, a shunt pipe 22, a through pipe 23, and a nozzle 24; a delivery pipe 21 is provided at the side end of the irrigation pipe 20, and one end of the delivery pipe is communicated with the storage pool 3; a shunt pipe 22 is provided below the irrigation pipe 20, and the shunt pipe 22 is communicated with the irrigation pipe 20 through a through pipe 23; a plurality of nozzles 24 are fixedly communicated with one side of the shunt pipe 22.

[0047] The delivery pipe 21 diverts the water in the storage pool 3 into the irrigation pipe 20, transports it into the shunt pipe 22 through the through pipe 23, and then sprays it through a plurality of nozzles 24 to irrigate the shade-loving plants planted below the photovoltaic power generation system 1. At the same time, while the water flows down along the hillside, the economic fruit forest is irrigated by gravity.

[0048] In this embodiment, the controller 19, the liquid level sensor 18, and the water pump 8 are all powered by the storage battery 13 in the photovoltaic power generation system 1.

[0049] In this embodiment, the controller 19 and the liquid level sensor 18 adopt existing technologies.

[0050] The present invention collects rainwater through the water collecting grooves 14 arranged in the horizontal and vertical directions on the photovoltaic support 10. The collected rainwater flows towards the U-shaped drain pipe 15 under the guidance of the inclined photovoltaic support 10. The U-shaped drain pipe 15 guides the rainwater and then drops the rainwater into the drain channel 6 below. When the rainwater falls, the energy dissipation gravel cushion 16 in the drain channel 6 is used to dissipate the energy of the water flow impact, avoiding damage to the drain channel 6 caused by direct impact. The drain channel 6 guides the collected water to the water collecting pool 2 through the diversion channel 5. The filter screen 17 installed inside the water collecting pool 2 filters impurities, and the liquid level sensor 18 inside monitors the water level. When the monitored water level reaches the set threshold, a signal is sent to the controller 19. The controller 19 receives the signal and controls the start of the water pump 8. The water pump 8 uses the water suction pipe 7 to pump the water into the water storage pool 3. At the same time, the delivery pipe 21 guides the water in the water storage pool 3 into the irrigation pipe 20, and is conveyed into the shunt pipe 22 through the water pipe 23, and then sprayed out through a plurality of nozzles 24, which can realize the irrigation of the shade-loving plants planted under the photovoltaic power generation system 1. At the same time, while the water flows down the hillside from top to bottom, it can also realize the gravity irrigation of the economic fruit forest with higher added value.

[0051] Through a variety of structural configurations, the present invention reasonably configures rainwater collection, water storage and irrigation, strengthens the collection and utilization of natural rainwater in mountainous areas, and balances the contradiction between rainfall and water demand and supply in mountainous areas; through the reasonable utilization of the planting area under the mountain photovoltaic panels and in combination with irrigation facilities, the survival rate of vegetation is improved, and thus the soil erosion problem caused by the lack of vegetation in the photovoltaic area is avoided.

[0052] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A multifunctional system for water collection, erosion reduction and restoration for hill photovoltaic areas, characterized by: The invention comprises a photovoltaic power generation system (1), a water collection tank (2), a water storage tank (3) and a gravity irrigation device (4) arranged in a photovoltaic area; the gravity irrigation device (4) is arranged on one side of the photovoltaic power generation system (1); rainwater is transported to the water collection tank (2) through the photovoltaic power generation system (1); filtered rainwater in the water collection tank (2) is extracted through the water storage tank (3) and transported to the gravity irrigation device (4); and vegetation below the photovoltaic power generation system (1) and the fruit forest on the hillside are irrigated by gravity through the gravity irrigation device (4).

2. The multifunctional system for water collection, erosion reduction and restoration for hill photovoltaic areas according to claim 1 is characterized by: The photovoltaic power generation system (1) comprises a mounting bracket (9), a photovoltaic bracket (10), a support frame (11), and a storage battery (13); the mounting bracket (9) is fixed on a hillside, the support frame (11) is arranged on the mounting bracket (9), the photovoltaic bracket (10) is arranged on the support frame (11), and the storage battery (13) is arranged on the mounting bracket (9).

3. The multifunctional system for water collection, erosion reduction and restoration for hill photovoltaic areas according to claim 2 is characterized by: A drainage channel (6) is provided below the photovoltaic power generation system (1), and the drainage channel (6) is arranged on the hillside in an inclined manner from top to bottom.

4. The multifunctional system for water collection, erosion reduction and restoration for hill photovoltaic areas according to claim 3 is characterized by: An energy dissipating gravel cushion layer (16) is provided in the drainage channel (6).

5. The multifunctional system for water collection, erosion reduction and restoration for hill photovoltaic areas according to claim 2 is characterized by: A photovoltaic panel (12) is fixedly installed in the photovoltaic support (10), a water collecting trough (14) is provided on the photovoltaic support (10), a U-shaped drainage pipe (15) is fixedly inserted at the bottom end of the water collecting trough (14), and one end of the U-shaped drainage pipe (15) is located above the drainage channel (6).

6. The multifunctional system for water collection, erosion reduction and restoration for hill photovoltaic areas according to claim 1 is characterized by: A diversion channel (5), a water extraction pipe (7), and a controller (19) are provided on the water collecting pool (2); a filter screen (17) and a liquid level sensor (18) are provided in the water collecting pool (2); and the controller (19) is connected to the liquid level sensor (18).

7. The multifunctional system for water collection, erosion reduction and restoration for hill photovoltaic areas according to claim 1 is characterized by: A water pump (8) is provided at the water inlet end of the water reservoir (3), and the water pump (8) is connected to the water pump pipe (7).

8. The multifunctional system for water collection, erosion reduction and restoration for hill photovoltaic areas according to claim 1 is characterized by: The gravity irrigation device (4) comprises an irrigation pipe (20), a delivery pipe (21), a diverter pipe (22), a water pipe (23) and a nozzle (24); a delivery pipe (21) is provided at a side end of the irrigation pipe (20), and one end of the delivery pipe (21) is connected to a water reservoir (3); a diverter pipe (22) is provided below the irrigation pipe (20), and the diverter pipe (22) and the irrigation pipe (20) are connected via a water pipe (23); and a plurality of nozzles (24) are provided on one side of the diverter pipe (22).

9. The multifunctional system for water collection, erosion reduction and restoration for hill photovoltaic areas according to claim 2 is characterized by: The storage battery (13) is connected to a controller (19), a liquid level sensor (18), and a water pump (8).

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