Drainage system for improving utilization rate of external water resource of photovoltaic module

Abstract

The invention belongs to the field of photovoltaic technology, and discloses a drainage system for improving the utilization rate of external water resources of a photovoltaic module, the drainage system comprises a water guide plate and a drainage tank, the water guide plate is arranged on a frame below the photovoltaic module, the drainage tank is arranged below the lowest photovoltaic module and is fixedly connected with a photovoltaic support, and the drainage tank is arranged below the lowest photovoltaic module. Or is arranged between two transversely adjacent photovoltaic modules; the water guide plate between two transversely adjacent photovoltaic modules meets the following conditions: the water guide plate is positioned above the transverse gap between the two photovoltaic modules, the upper end surface of the water guide plate is flush with the upper surface of the upper photovoltaic module, and the lower end of the water guide plate extends to the upper part of the upper surface of the lower photovoltaic module. According to the drainage system, the simplest and most direct water resource collection and utilization are realized, and the utilization rate of the water resource in the photovoltaic module cleaning and natural rainfall process can be improved. The drainage system is simple in structure and low in cost, can be integrated with photovoltaic module production, and is low in operation and maintenance cost.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaics, and in particular relates to a drainage system for improving the utilization rate of water resources outside a photovoltaic module. Background Art

[0002] Photovoltaic technology is currently booming. In some large deserts, Gobi and wasteland areas, "photovoltaic sand control" and "photovoltaic ecological integration" have become important trends and important measures for the development of the photovoltaic industry. In most desert and Gobi areas, water resources required for sand control and ecological management have become a major problem, resulting in little effect and huge costs in photovoltaic ecological integration management.

[0003] Therefore, rationally and efficiently utilizing the water resources consumed by photovoltaic module cleaning and generated by natural precipitation for ecological improvement can effectively reduce the cost of ecological governance and achieve the goal of water conservation.

[0004] The existing water collection system under the photovoltaic panel sets a water collection pipe at the bottom edge of the photovoltaic module frame, collects water resources to the water storage area through the water collection pipe, and then distributes this part of the water resources into the soil under the photovoltaic panel through irrigation and drip irrigation after treatment.

[0005] The existing photovoltaic panel water collection and water resource utilization system or water-fertilizer integrated irrigation system has the following disadvantages:

[0006] 1. Because a large number of pipelines need to be laid, the construction is complicated and the construction cost is high;

[0007] 2. In the process of water collection and circulation, some water will be lost due to evaporation;

[0008] 3. It cannot be integrated with the photovoltaic module production process and can only be carried out after the photovoltaic modules are installed or even the photovoltaic power station is built. Summary of the invention

[0009] In view of the above problems, the present invention provides a drainage system for improving the utilization rate of water resources outside photovoltaic modules, which adopts the following technical solutions:

[0010] A drainage system for improving the utilization rate of external water resources of photovoltaic modules, comprising a water guide plate and a drainage trough; wherein the water guide plate is arranged on a frame below the photovoltaic module, and the drainage trough is arranged below the lowest photovoltaic module and fixedly connected to the photovoltaic bracket, or arranged between two laterally adjacent photovoltaic modules; the water guide plate located between two laterally adjacent photovoltaic modules satisfies: the water guide plate is located above the lateral gap between the two photovoltaic modules, the upper end surface of the water guide plate is flush with the upper surface of the upper photovoltaic module, and the lower end of the water guide plate extends to above the upper surface of the lower photovoltaic module.

[0011] Furthermore, the water guide plate includes a first straight portion, a second straight portion, an arc-shaped transition portion and a third straight portion connected in sequence, one end of the first straight portion is connected to the frame below the photovoltaic component, and a first angle is formed between the first straight portion and the second straight portion.

[0012] Furthermore, the first angle is between 90° and 180°.

[0013] Furthermore, a second angle is formed between the third straight line portion and the second straight line portion.

[0014] Furthermore, the second angle is between 90° and 180°.

[0015] Furthermore, the water guide plate is made of galvanized steel plate or PPE plastic.

[0016] Furthermore, the drainage trough is fixedly connected to the photovoltaic support through a water trough support, and both ends of the drainage trough are respectively extended to be flush with both ends of the mounting platform.

[0017] Furthermore, the cross section of the drainage groove is U-shaped, and drainage holes are arranged on the outside or both sides of the drainage groove.

[0018] Furthermore, the drainage groove includes a first groove body and a second groove body connected to each other, and the first groove body and the second groove body form a V-shaped drainage groove.

[0019] Furthermore, the angle between the first trough body and the horizontal line is 2° to 3°, and the angle between the second trough body and the horizontal line is 2° to 3°.

[0020] Beneficial effects of the present invention:

[0021] 1. The drainage system of the present invention realizes the simplest and most direct water resource collection and utilization, and can improve the utilization rate of water resources during photovoltaic module cleaning and natural precipitation.

[0022] 2. The drainage system of the present invention has a simple structure and low cost, can be integrated with photovoltaic module production, and has low operation and maintenance costs.

[0023] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the side structure of a drainage system for improving the utilization rate of water resources outside a photovoltaic module according to an embodiment of the present invention is shown;

[0026] Figure 2 A front structural schematic diagram of a drainage system for improving the utilization rate of water resources outside a photovoltaic module according to an embodiment of the present invention is shown;

[0027] Figure 3 A schematic diagram showing the installation of the water guide plate between two laterally adjacent photovoltaic assemblies according to an embodiment of the present invention is shown;

[0028] Figure 4 A schematic structural diagram of a water guide plate according to an embodiment of the present invention is shown;

[0029] Figure 5 Shown according to Figure 2 A local enlarged schematic diagram of the middle A;

[0030] Figure 6 A schematic structural diagram of a drainage trough according to an embodiment of the present invention is shown.

[0031] In the figure: 1. Photovoltaic bracket; 2. Installation platform; 3. Support beam; 4. Diagonal rod; 5. Photovoltaic module; 6. Water guide plate; 7. Drainage trough; 8. First straight portion; 9. Second straight portion; 10. Arc-shaped transition portion; 11. Third straight portion; 12. Water trough bracket; 13. First trough body; 14. Second trough body; 15. Drainage hole. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms "first", "second" etc. in the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged in appropriate circumstances, so that the embodiments of the present application described here. In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" etc. are based on the orientation or positional relationship shown in the accompanying drawings.

[0034] The present invention provides a drainage system for improving the utilization rate of external water resources of photovoltaic modules, optimizing the cleaning of photovoltaic modules and the utilization of natural precipitation, eliminating the need for laying a large number of pipelines, solving the problem that drainage of photovoltaic modules falls in a single direction along a frame and cannot be efficiently utilized, and having low implementation costs.

[0035] like Figure 1 As shown, the structure of the photovoltaic module 5 and the photovoltaic bracket 1 is briefly introduced. The photovoltaic bracket 1 includes a mounting platform 2, a support beam 3 and a diagonal rod 4, wherein the mounting platform 2 forms a certain angle with the horizontal line, and multiple support beams 3 are arranged at the bottom of the mounting platform 2 to support the mounting platform 2. Each support beam 3 is connected to the mounting platform 2 through a diagonal rod 4 to improve the overall structural strength of the photovoltaic bracket 1. Multiple photovoltaic modules 5 are arranged on the mounting platform 2, and a lateral gap is provided between two laterally adjacent photovoltaic modules 5.

[0036] It should be noted that the structure of the above-mentioned photovoltaic bracket 1 is only an example, and the drainage system of the present invention can also be used for photovoltaic brackets 1 of other structures.

[0037] like Figure 1 and Figure 2 As shown, a drainage system for improving the utilization rate of external water resources of photovoltaic modules 5 includes a water guide plate 6 and a drainage trough 7, wherein the water guide plate 6 is arranged on the frame below the photovoltaic module 5, and the drainage trough 7 is arranged below the lowest photovoltaic module 5, and the drainage trough 7 is used to collect water falling from the photovoltaic module 5 and discharge it outward.

[0038] like Figure 3 As shown, the water guide plate 6 located between two laterally adjacent photovoltaic modules 5 meets the following requirements: the water guide plate 6 is located above the lateral gap between the two photovoltaic modules 5, the upper end surface of the water guide plate 6 is flush with the upper surface of the upper photovoltaic module 5, and the lower end of the water guide plate 6 extends above the upper surface of the lower photovoltaic module 5. The water guide plate 6 can fully collect the water falling from the upper photovoltaic module 5, reduce the amount of water falling into the gap between the photovoltaic modules 5, and reduce the occurrence of hidden dangers such as abnormal water inflow to the modules and corrosion of the brackets while improving the water resource collection rate.

[0039] It should be noted that the layout direction of the drainage ditch 7 can be adjusted to below the panel edge or between two laterally adjacent photovoltaic components 5 according to the frequency of component cleaning at the site, natural precipitation and other available water resources.

[0040] The drainage system of the present invention can change the situation where water falls along the frame of the photovoltaic module 5 during the cleaning and natural precipitation of the photovoltaic module 5, and evenly distributes the drainage under the frame of the photovoltaic module 5 through the drainage system, thereby improving the utilization rate of water resources during the cleaning and natural precipitation of the photovoltaic module 5.

[0041] For example, the water guide plate 6 and the frame of the photovoltaic assembly 5 may be connected in any one of bolted connection, card connection, and adjustable hinge connection.

[0042] For example, Figure 4 As shown, the water guide plate 6 includes a first straight portion 8, a second straight portion 9, an arc-shaped transition portion 10 and a third straight portion 11 connected in sequence, wherein one end of the first straight portion 8 is connected to the frame below the photovoltaic component 5, and a first angle is formed between the first straight portion 8 and the second straight portion 9. For example, the first angle is between 90° and 180°. Because the first angle is an obtuse angle, after the first straight portion 8 is connected to the frame of the upper photovoltaic component 5, the arc-shaped transition portion 10 and the third straight portion 11 can be higher than the upper surface of the lower photovoltaic component 5, so that water can be collected and reduced to flow into the gap between the photovoltaic components 5.

[0043] For example, there is a second angle between the third straight portion 11 and the second straight portion 9, so that water can flow smoothly through the second straight portion 9, the arc-shaped transition portion 10 and the third straight portion 11, avoiding water accumulation and improving the water collection rate. For example, the second angle is between 90° and 180°.

[0044] For example, the water guide plate 6 can be formed by using galvanized steel plate or thicker PPE plastic. The galvanized steel plate has certain anti-corrosion properties, is easy to process and form, and has low cost. PPE (Polypheylene ether, polyphenylene oxide or polyphenylene ether) plastic has excellent mechanical strength, stress relaxation resistance, creep resistance, heat resistance, water resistance, water vapor resistance, and dimensional stability.

[0045] For example, the water guide plate 6 is formed by bending galvanized steel plates, or by one-time injection molding of PPE plastics. Bending and injection molding can be produced in large quantities with low processing costs. Galvanized steel plates and PPE plastics have good corrosion resistance, which is convenient for promotion and application in areas where photovoltaic modules 5 are installed over a large area.

[0046] For example, the water guide plate 6 can be directly integrated into the frame of the photovoltaic component 5 when the photovoltaic support 1 is produced, and the drainage groove 7 can be integrated into the photovoltaic support 1.

[0047] For example, Figure 1 As shown, four groups of photovoltaic components 5 are arranged on the mounting platform 2 of the photovoltaic bracket 1. The first photovoltaic component 5, the second photovoltaic component 5, the third photovoltaic component 5 and the fourth photovoltaic component 5 are arranged in sequence from top to bottom on the mounting platform 2 to form three transverse gaps. Four water guide plates 6 are arranged. The first straight portion 8 of the first water guide plate 6 is connected to the lower frame of the first photovoltaic component 5, and the first water guide plate 6 is located above the transverse gap between the first photovoltaic component 5 and the second photovoltaic component 5. The first straight portion 8 of the second water guide plate 6 is connected to the lower frame of the second photovoltaic component 5. The second water guide plate 6 is located above the transverse gap between the second photovoltaic component 5 and the third photovoltaic component 5. The first straight portion 8 of the third water guide plate 6 is connected to the lower frame of the third photovoltaic component 5. The third water guide plate 6 is located above the transverse gap between the third photovoltaic component 5 and the fourth photovoltaic component 5, and the first straight portion 8 of the fourth water guide plate 6 is connected to the lower frame of the fourth photovoltaic component 5.

[0048] For example, Figure 1 and Figure 5 As shown, the drain trough 7 is fixedly connected to the photovoltaic support 1 through the water trough bracket 12, and the two ends of the drain trough 7 extend to be flush with the two ends of the mounting platform 2. For example, the water trough bracket 12 is a U-shaped bending part.

[0049] For example, Figure 2 As shown, the drainage groove 7 includes a first groove body 13 and a second groove body 14 which are connected to each other. The first groove body 13 and the second groove body 14 form a V-shaped drainage groove 7. The angle between the first groove body 13 and the horizontal line is 2° to 3°, and the angle between the second groove body 14 and the horizontal line is 2° to 3°. By controlling the installation angle of the first groove body 13 and the second groove body 14 to be 2° to 3°, the water output of each drainage hole 15 is consistent.

[0050] For example, Figure 5 and Figure 6 As shown, the cross section of the drainage groove 7 is U-shaped, and drainage holes 15 are arranged on the outside or both sides of the drainage groove 7. The drainage groove 7 collects the water falling from the photovoltaic module 5 and then flows out through the drainage holes 15 on the drainage groove 7.

[0051] The drainage system of the present invention realizes the simplest and most direct water resource collection and utilization, and can realize the uniform arrangement of water resources under the board edge (freely adjustable); it can reduce the occurrence of hidden dangers such as abnormal water inflow of components and corrosion of brackets while improving the water resource collection rate.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drainage system for improving the utilization rate of water resources outside photovoltaic modules, It is characterized in that It comprises a water guide plate (6) and a drainage trough (7); The water guide plate (6) is arranged on the frame below the photovoltaic module (5), and the drainage groove (7) is arranged below the lowest photovoltaic module (5) and fixedly connected to the photovoltaic bracket (1), or arranged between two laterally adjacent photovoltaic modules (5); the water guide plate (6) located between two laterally adjacent photovoltaic modules (5) meets the following requirements: the water guide plate (6) is located above the lateral gap between the two photovoltaic modules (5), the upper end surface of the water guide plate (6) is flush with the upper surface of the upper photovoltaic module (5), and the lower end of the water guide plate (6) extends above the upper surface of the lower photovoltaic module (5).

2. The drainage system for improving the utilization rate of water resources outside photovoltaic modules according to claim 1, It is characterized in that The water guide plate (6) comprises a first straight portion (8), a second straight portion (9), an arc-shaped transition portion (10) and a third straight portion (11) which are connected in sequence, one end of the first straight portion (8) is connected to a frame below the photovoltaic module (5), and a first angle is formed between the first straight portion (8) and the second straight portion (9).

3. The drainage system for improving the utilization rate of water resources outside photovoltaic modules according to claim 2, It is characterized in that The first angle is between 90° and 180°.

4. The drainage system for improving the utilization rate of water resources outside photovoltaic modules according to claim 2, It is characterized in that A second included angle is formed between the third straight line portion (11) and the second straight line portion (9).

5. The drainage system for improving the utilization rate of water resources outside photovoltaic modules according to claim 4, It is characterized in that The second angle is between 90° and 180°.

6. A drainage system for improving the utilization rate of water resources outside photovoltaic modules according to any one of claims 1 to 5, It is characterized in that The water guide plate (6) is made of galvanized steel plate or PPE plastic.

7. A drainage system for improving the utilization rate of water resources outside photovoltaic modules according to any one of claims 1 to 5, It is characterized in that The drainage trough (7) is fixedly connected to the photovoltaic support (1) via a trough support (12), and two ends of the drainage trough (7) respectively extend to be flush with two ends of the installation platform (2).

8. The drainage system for improving the utilization rate of water resources outside photovoltaic modules according to claim 7, It is characterized in that The cross section of the drainage groove (7) is U-shaped, and drainage holes (15) are arranged on the outside or both sides of the drainage groove (7).

9. The drainage system for improving the utilization rate of water resources outside photovoltaic modules according to claim 7, It is characterized in that The drainage groove (7) comprises a first groove body (13) and a second groove body (14) which are connected to each other, and the first groove body (13) and the second groove body (14) form a V-shaped drainage groove (7).

10. The drainage system for improving the utilization rate of water resources outside photovoltaic modules according to claim 9, It is characterized in that The angle between the first trough body (13) and the horizontal line is 2° to 3°, and the angle between the second trough body (14) and the horizontal line is 2° to 3°.

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