Rainwater recycling-based efficient water collecting device and method under photovoltaic panel

Abstract

The device comprises a water collecting unit, a filtering unit, a water storage unit and a sprinkling irrigation unit which are connected in sequence, the water collecting unit and the sprinkling irrigation unit are both arranged on the ground surface, the water storage unit is buried in the ground surface, and the filtering unit is arranged in the sprinkling irrigation unit. The bottom end of the water collecting unit is communicated with the water storage unit through the filtering unit, and the sprinkling irrigation unit is communicated with the water storage unit; the water collecting unit comprises a plurality of water collecting columns which are uniformly arranged at intervals; and the centers of the water collecting columns are arranged at the position of a water accumulating line below the photovoltaic panel. According to the efficient water collection device and method under the photovoltaic panel based on rainwater recycling and reusing, the device has the advantages of being high in water collection efficiency, clean in water quality, large in water storage capacity, capable of achieving intelligent sprinkling irrigation, convenient to maintain and the like, and efficient collection and storage of rainfall are achieved through reasonable design; the method has important significance on improving the water resource utilization rate.

Description

Technical Field

[0001] The present invention relates to the technical field of water collection devices, and in particular to a high-efficiency water collection device and method under a photovoltaic panel based on rainwater recycling and reuse. Background Art

[0002] At present, when facing the development and construction of new energy power generation projects in the Shago Desert, China is in the initial stage of how to comprehensively consider the impact assessment on the ecosystem, as well as ecological protection and restoration, collection and utilization of unconventional water, etc., and lacks the accumulation of research results and corresponding technical standards.

[0003] Therefore, water recycling is particularly important. The characteristics of unconventional water sources such as rainwater and recycled water (sewage and wastewater that have been recycled) are that they can be recycled after treatment, and can replace conventional water resources to a certain extent, accelerate and improve the circulation process of natural water resources, and make limited water resources more effective.

[0004] In the prior art, water collection devices are generally traditional rainwater collection barrels and gutter systems, which have problems such as low water collection efficiency, insufficient water storage space, difficult cleaning and maintenance, and inconvenient installation. Therefore, developing an efficient water collection device suitable for photovoltaic panels is of great significance for improving water resource utilization, environmental protection, and green and sustainable development in the Shagohuang area. Summary of the invention

[0005] The purpose of the present invention is to provide an efficient water collection device and method under photovoltaic panels based on rainwater recycling and reuse. The device has the advantages of high water collection efficiency, clean water quality, large water storage capacity, intelligent sprinkler irrigation and easy maintenance. The method achieves efficient collection and storage of precipitation through reasonable design, which is of great significance to improving the utilization rate of water resources.

[0006] To achieve the above-mentioned purpose, the present invention provides a high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse, comprising a water collection unit, a filtering unit, a water storage unit and a sprinkler unit connected in sequence, the water collection unit and the sprinkler unit are both arranged on the ground surface, the water storage unit is buried in the ground surface, the bottom end of the water collection unit is connected to the water storage unit through the filtering unit, and the sprinkler unit is connected to the water storage unit;

[0007] The water collection unit comprises a plurality of water collection columns which are evenly spaced, and the centers of the water collection columns are arranged at the water accumulation line below the photovoltaic panel.

[0008] Preferably, the upper surface of the water collecting column is provided with a main water collecting port, the side wall of the water collecting column is provided with a plurality of auxiliary water collecting ports, the lower surface of the water collecting column is provided with a plurality of water outlets, and the main water collecting port and the auxiliary water collecting port are both provided with water flow guide plates.

[0009] Preferably, the filtration unit includes a sand filter bag and a water collector, the water collector corresponds to the water collecting column one by one, the water collector is a funnel-shaped structure, the top of the water collector is arranged directly below the sand filter bag, a filter layer is arranged in the water collector, and a first water collection pipe is arranged at the bottom of the water collector, and the first water collection pipe is connected to the water storage unit.

[0010] Preferably, the water storage unit includes a warehouse body and a warehouse cover movably connected to the warehouse body, the lower surface of the water collecting column is fixedly connected to the warehouse cover, the water outlet passes through the warehouse cover and is connected to a second water collection pipe, the second water collection pipe is fixedly connected to the filter sand bag, and a third water collection pipe is arranged through the bottom of the warehouse body, and the third water collection pipe is communicated with the sprinkler unit.

[0011] Preferably, the sprinkler unit includes a nozzle and a regulating valve, the nozzle is connected to the third water collection pipe, the regulating valve is arranged on the third water collection pipe, a water level monitor is arranged in the warehouse body, the water level monitor is electrically connected to the user-end device through a sensor, and the regulating valve is electrically connected to the user-end device.

[0012] Preferably, the filter layer is one or a combination of a semi-permeable membrane or a gravel filling layer.

[0013] Preferably, the water collecting column and the water flow guide plate are both made of drainage materials.

[0014] Preferably, a water-conducting canvas is provided at the lower edge of the photovoltaic panel, and the other end of the water-conducting canvas is fixedly connected to the water collection unit.

[0015] To achieve the above purpose, the present invention also provides a method for using a high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse, comprising the following steps:

[0016] S1. Installation of water collection unit and water storage unit:

[0017] A water storage unit with a preset capacity is selected according to actual needs, a trench is dug at a preset position under the photovoltaic panel, the water storage unit and the third water collection pipe are buried in the ground, the position of the water collection column on the surface of the bin cover is adjusted according to the gap between the photovoltaic panels to capture precipitation in the gap between the photovoltaic panels, and the water storage unit is connected with the water collection unit, the filtration unit and the sprinkler unit;

[0018] S2. Maintenance of filter unit:

[0019] Check the filter sand bags and water collectors regularly to maintain good filtration results;

[0020] S3. Monitoring of user-end equipment and operation of sprinkler units:

[0021] The water level monitor transmits the water level information of the water storage unit to the user-end device so that the user can understand the water storage situation in real time. When the water storage reaches the preset maximum value, the user-end device starts the regulating valve and adjusts the opening of the regulating valve to control the automatic start of the sprinkler and the amount of water sprayed.

[0022] Therefore, the present invention adopts the above-mentioned high-efficiency water collection device and method under the photovoltaic panel based on rainwater recycling and reuse, and the beneficial effects are as follows:

[0023] The present invention obtains a water collection device with the advantages of high water collection efficiency, clean water quality, large water storage capacity, intelligent sprinkler irrigation and easy maintenance through a reasonable combination of a water collection unit, a filtering unit, a water storage unit and a sprinkler unit. The precipitation in the gaps between photovoltaic panels in the Shagohuang area is recycled and reused. The method achieves efficient collection and storage of precipitation through a reasonable design, which is of great significance to improving the utilization rate of water resources and the green and sustainable development of the Shagohuang area.

[0024] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of a high-efficiency water collection device and method under a photovoltaic panel based on rainwater recycling and reuse of the present invention;

[0026] Figure 2 It is a front schematic diagram of an embodiment of a high-efficiency water collection device and method under a photovoltaic panel based on rainwater recycling and reuse of the present invention;

[0027] Figure 3 It is a top view of an embodiment of a high-efficiency water collection device and method under a photovoltaic panel based on rainwater recycling and reuse of the present invention.

[0028] Reference numerals

[0029] 1. Water collection unit; 2. Filtration unit; 3. Water storage unit; 4. Sprinkler unit; 5. Water collection column; 6. Main water collection port; 7. Secondary water collection port; 8. Water outlet; 9. Water flow guide plate; 10. Sand filter bag; 11. Water collector; 12. Filter layer; 13. First water collection pipe; 14. Bin body; 15. Bin cover; 16. Second water collection pipe; 17. Third water collection pipe; 18. Photovoltaic panel. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0031] Unless otherwise defined, technical or scientific terms used in the present invention shall have the common meanings understood by one having ordinary skills in the field to which the present invention belongs.

[0032] Embodiment 1

[0033] A high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse, comprising a water collection unit 1, a filtering unit 2, a water storage unit 3 and a sprinkler unit 4 connected in sequence, the water collection unit 1 and the sprinkler unit 4 are both arranged on the ground surface, the water storage unit 3 is buried in the ground surface, the bottom end of the water collection unit 1 is connected to the water storage unit 3 through the filtering unit 2, and the sprinkler unit 4 is connected to the water storage unit 3.

[0034] The water collection unit 1 includes a number of evenly spaced water collection columns 5, the center of which is arranged at the water accumulation line below the photovoltaic panel 18. The water accumulation line is the ditch line formed by the precipitation flowing naturally down to the ground through the gap between the photovoltaic panels 18. The upper surface of the water collection column 5 is provided with a main water collection port 6, the side wall of the water collection column 5 is provided with a number of auxiliary water collection ports 7, and the lower surface of the water collection column 5 is provided with a number of water outlets 8. The main water collection port 6 and the auxiliary water collection port 7 are both provided with a water flow guide plate 9. The water collection column 5 and the water flow guide plate 9 are both made of drainage materials, and the surface has anti-slip and self-cleaning functions, which guide the precipitation to the central water outlet 8, while preventing the main water collection port 6 and the auxiliary water collection port 7 from being blocked by wind and sand. On the one hand, the auxiliary water collection port 7 cooperates with the water flow guide plate 9 to reduce the evaporation rate of water. On the other hand, the auxiliary water collection port 7 can condense water in the air and then flow into the water storage unit 3, thereby improving the recycling rate of unconventional water.

[0035] The filter unit 2 includes a filter sand bag 10 and a water collector 11. The water collector 11 corresponds to the water collecting column 5 one by one. The water collector 11 is a funnel-shaped structure. The top of the water collector 11 is set directly below the filter sand bag 10. A filter layer 12 is set in the water collector 11. The filter layer 12 is one or a combination of a semi-permeable membrane or a gravel filling layer. The filter sand bag 10 is used to initially remove large particles of impurities, and the filter layer 12 is used for fine filtration to ensure clean water quality and prevent impurities from clogging pipes or nozzles. The filter sand bag 10 and the filter layer 12 can be disassembled and cleaned for easy maintenance. A first water collection pipe 13 is set at the bottom of the water collector 11, and the first water collection pipe 13 is connected to the water storage unit 3.

[0036] The water storage unit 3 includes a bin body 14 and a bin cover 15 movably connected to the bin body 14, the lower surface of the water collecting column 5 is fixedly connected to the bin cover 15, the water outlet 8 passes through the bin cover 15 and is connected to a second water collection pipe 16, the second water collection pipe 16 is fixedly connected to the filter sand bag 10, and a third water collection pipe 17 is arranged through the bottom of the bin body 14, and the third water collection pipe 17 is connected to the sprinkler unit 4.

[0037] The sprinkler unit 4 includes a nozzle and a regulating valve (not marked in the figure), the nozzle is connected to the third water collection pipe 17, the regulating valve is arranged on the third water collection pipe 17, and a water level monitor is arranged in the warehouse body 14 for real-time monitoring of water level changes. The water level monitor is electrically connected to the user-end device through a sensor, and the regulating valve is electrically connected to the user-end device.

[0038] The method of using the method comprises the following steps:

[0039] S1. Installation of water collection unit 1 and water storage unit 3:

[0040] A water storage unit 3 of preset capacity is selected according to actual needs, a trench is dug at a preset position under the photovoltaic panel 18, the water storage unit 3 and the third water collection pipe 17 are buried in the ground, and the position of the water collection column 5 on the surface of the bin cover 15 is adjusted according to the gap between the photovoltaic panels 18 to capture precipitation in the gap between the photovoltaic panels 18 to maximize the water collection efficiency, and the water storage unit 3 is connected with the water collection unit 1, the filtration unit 2 and the sprinkler unit 4.

[0041] S2. Maintenance of filter unit 2:

[0042] Check the filter sand bag 10 and the water collector 11 regularly to maintain a good filtering effect.

[0043] S3, monitoring of user-end equipment and operation of sprinkler unit 4:

[0044] The water level monitor transmits the water level information of the water storage unit 3 to the user-end device so that the user can understand the water storage situation in real time. When the water storage reaches the preset maximum value, the user-end device starts the regulating valve and adjusts the opening of the regulating valve to control the automatic start of the sprinkler and the amount of water sprayed, spraying excess water to irrigate the vegetation in the photovoltaic plant to prevent the water storage unit 3 from overflowing. The sprinkler unit 4 controls the drainage through the regulating valve to ensure the rational use of water resources.

[0045] In actual use, the water collected by the bin 14 mainly comes from the water accumulation line on the ground. The water accumulation line has a water collection function, that is, the water gathers in the groove line formed on the ground, flows through the secondary water collection port 7, and enters the bin 14 through the filter unit 2. Part of it comes from the gap position of the photovoltaic panel 18, that is, precipitation flows down from the top of the water collection column 5, flows through the main water collection port 6, and enters the bin 14 through the filter unit 2. Part of it comes from air condensation water. When the air humidity is at a high level, the water flow guide plate helps the water in the air to condense and flow through the main water collection port 6 and the secondary water collection port 7, and enter the bin 14 through the filter unit 2.

[0046] In this embodiment, unconventional water irrigation for vegetation restoration is carried out based on the 30MW photovoltaic power station in Jiaguguan, Gansu. The annual precipitation in the area is less than 100mm, pH=9.27, soil SOC=2.7g / kg, AN=15.53mg / kg, AP=0.06mg / kg, AK=366mg / kg. The soil layer thickness in the plant area is about 30cm, with pebbles and gravel below. There is no obvious moist soil in the 30cm surface soil, and the soil moisture content is extremely low. According to the gap position of the photovoltaic panel 18, the water collection column 5 is 60cm above the ground, 40cm in diameter, and four in number; the width of the warehouse 14 is 50cm, the length is 300cm, and the height is 50cm. When the water collection time is 60 days, the water storage capacity in the warehouse 14 reaches 15.7L.

[0047] Embodiment 2

[0048] The difference from Example 1 is that a water-guiding canvas is provided at the lower edge of the photovoltaic panel 18, and the other end of the water-guiding canvas is fixedly connected to the water collection unit 1 to collect waste water when flushing the photovoltaic panel 18. After being processed by the filtering unit 2, it flows to the water storage unit 3 or is reused in the sprinkler unit 4, thereby further improving the recovery and reuse rate of unconventional water.

[0049] Therefore, the present invention adopts the above-mentioned high-efficiency water collection device and method under photovoltaic panels based on rainwater recycling and reuse. The device has the advantages of high water collection efficiency, clean water quality, large water storage capacity, intelligent sprinkler irrigation and easy maintenance. This method achieves efficient collection and storage of precipitation through reasonable design, which is of great significance to improving the utilization rate of water resources.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An efficient water collection device under a photovoltaic panel based on rainwater recycling and reuse, characterized in that: It comprises a water collection unit, a filtering unit, a water storage unit and a sprinkler unit which are connected in sequence, wherein the water collection unit and the sprinkler unit are both arranged on the ground surface, the water storage unit is buried in the ground surface, the bottom end of the water collection unit is connected to the water storage unit through the filtering unit, and the sprinkler unit is connected to the water storage unit; The water collection unit comprises a plurality of water collection columns which are evenly spaced, and the centers of the water collection columns are arranged at the water accumulation line below the photovoltaic panel.

2. The high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse according to claim 1 is characterized in that: The upper surface of the water collecting column is provided with a main water collecting port, the side wall of the water collecting column is provided with a plurality of auxiliary water collecting ports, the lower surface of the water collecting column is provided with a plurality of water outlets, and the main water collecting port and the auxiliary water collecting port are both provided with water flow guide plates.

3. The high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse according to claim 2 is characterized in that: The filtration unit includes a sand filter bag and a water collector. The water collector corresponds to the water collecting column one by one. The water collector is a funnel-shaped structure. The top of the water collector is arranged directly below the sand filter bag. A filter layer is arranged in the water collector. A first water collection pipe is arranged at the bottom of the water collector, and the first water collection pipe is connected to the water storage unit.

4. The high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse according to claim 3 is characterized in that: The water storage unit includes a bin body and a bin cover movably connected to the bin body, the lower surface of the water collecting column is fixedly connected to the bin cover, the water outlet passes through the bin cover and is connected to a second water collection pipe, the second water collection pipe is fixedly connected to the filter sand bag, and a third water collection pipe is arranged through the bottom of the bin body, and the third water collection pipe is communicated with the sprinkler unit.

5. The high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse according to claim 4 is characterized in that: The sprinkler unit includes a nozzle and a regulating valve, the nozzle is connected to the third water collection pipe, the regulating valve is arranged on the third water collection pipe, a water level monitor is arranged in the warehouse body, the water level monitor is electrically connected to the user-end device through a sensor, and the regulating valve is electrically connected to the user-end device.

6. The high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse according to claim 5 is characterized in that: The filter layer is one or a combination of a semi-permeable membrane or a gravel filling layer.

7. The high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse according to claim 6 is characterized in that: The water collecting column and the water flow guide plate are both made of drainage materials.

8. The high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse according to claim 1 is characterized in that: A water-conducting canvas is arranged at the lower edge of the photovoltaic panel, and the other end of the water-conducting canvas is fixedly connected to the water collection unit.

9. A method for using the high-efficiency water collection device under a photovoltaic panel based on rainwater recycling and reuse according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Installation of water collection unit and water storage unit: A water storage unit with a preset capacity is selected according to actual needs, a trench is dug at a preset position under the photovoltaic panel, the water storage unit and the third water collection pipe are buried in the ground, the position of the water collection column on the surface of the bin cover is adjusted according to the gap between the photovoltaic panels to capture precipitation in the gap between the photovoltaic panels, and the water storage unit is connected with the water collection unit, the filtration unit and the sprinkler unit; S2. Maintenance of filter unit: Check the filter sand bags and water collectors regularly to maintain good filtration results; S3. Monitoring of user-end equipment and operation of sprinkler units: The water level monitor transmits the water level information of the water storage unit to the user-end device so that the user can understand the water storage situation in real time. When the water storage reaches the preset maximum value, the user-end device starts the regulating valve and adjusts the opening of the regulating valve to control the automatic start of the sprinkler and the amount of water sprayed.

Images