Photovoltaic sand stabilization device

Abstract

The photovoltaic sand stabilization device comprises a photovoltaic assembly, a first sand stabilization assembly, a second sand stabilization assembly and a water-saving drip irrigation system, the photovoltaic assembly comprises a photovoltaic support and a photovoltaic panel rotationally connected with the photovoltaic support, and a wind speed sensor is arranged on the photovoltaic support; the first sand stabilization assembly comprises a sand stabilization structure and a driving assembly in transmission connection with a sand stabilization net of the sand stabilization structure, the sand stabilization structure is arranged on the periphery of the photovoltaic support, the driving assembly can drive the sand stabilization net to ascend and descend, and the driving assembly is connected with the wind speed sensor; the second sand stabilization assembly comprises a mixed soil layer and grass checks, the mixed soil layer is arranged on the ground, the grass checks are arranged on the mixed soil layer, and plants are planted in all the grass checks; the water-saving drip irrigation system is arranged on the second sand stabilization assembly. According to the photovoltaic sand stabilization device, the first sand stabilization assembly and the second sand stabilization assembly act together, the influence of quicksand on the photovoltaic assembly can be reduced, and safe and stable operation of the photovoltaic assembly is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic sand control, and more specifically, to a photovoltaic sand control device. Background Art

[0002] As a clean and renewable energy, solar energy is unlimited and extensive, so it is widely used. The northern region of my country has a large area of ​​deserts and Gobi, with low surface vegetation coverage and rich solar energy resources, making it an important site for installing photovoltaics. Installing photovoltaic panels in desert areas can not only convert solar energy into electricity and promote regional economic development, but the shadows under the photovoltaic panels can also lower the ground temperature, reduce water evaporation, and be conducive to the growth of desert vegetation. Studies have shown that photovoltaic power generation is one of the effective measures to reduce greenhouse gas emissions.

[0003] However, the winds in desert areas are strong and frequent, and the resulting quicksand has a great negative impact on the stability and power generation efficiency of photovoltaic power stations. On the one hand, the blowing sand covering the surface of photovoltaic panels or entering the interior of photovoltaic panels will reduce the power generation efficiency by 20%-60%, seriously affecting the energy output of photovoltaic power stations; on the other hand, under the action of wind, quicksand may move and cover photovoltaic panels, affecting their lighting and power generation efficiency.

[0004] Therefore, how to reduce the impact of quicksand on the photovoltaic system and ensure the service life and power generation efficiency of the photovoltaic system has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a sand fixation device to reduce the impact of quicksand on a photovoltaic system and ensure the service life and power generation efficiency of the photovoltaic system.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A photovoltaic sand fixation device, comprising:

[0008] Photovoltaic assembly, the photovoltaic assembly includes a photovoltaic bracket and a photovoltaic panel rotatably connected to the photovoltaic bracket, and a wind speed sensor is arranged on the photovoltaic bracket;

[0009] The first sand-fixing component includes a sand-fixing structure and a driving component that is transmission-connected to a sand-fixing net of the sand-fixing structure. The sand-fixing structure is arranged around the photovoltaic support. The driving component can drive the sand-fixing net to rise and fall. The driving component is connected to a wind speed sensor.

[0010] A second sand-fixing component, the second sand-fixing component comprises a mixed soil layer and grass grids, the mixed soil layer is arranged on the ground, the grass grids are arranged on the mixed soil layer, a sand-fixing agent coating is arranged on the surface of the grass grids, and plants are planted in each grid of the grass grids;

[0011] A water-saving drip irrigation system is arranged on the second sand-fixing component to irrigate the plants.

[0012] Optionally, in the above-mentioned photovoltaic sand fixation device, the sand fixation structure includes sand fixation pillars and a sand fixation net, and the sand fixation net can move along the axial direction of the sand fixation pillars.

[0013] Optionally, in the above photovoltaic sand fixation device, the sand fixation net is slidably matched with the sand fixation pillar via a slider, and the driving assembly includes a driving cylinder, and a piston rod of the driving cylinder is connected to the slider.

[0014] Optionally, in the above photovoltaic sand fixation device, the water-saving drip irrigation system includes a water source, a delivery pipeline, a dripper and a control unit, the delivery pipeline is connected to the water source, the dripper is arranged at the end of the delivery pipeline, a filter and a regulating valve are arranged on the delivery pipeline, and the regulating valve is connected to the control unit;

[0015] The mixed soil layer is provided with a humidity sensor, and the humidity sensor is connected with the control unit.

[0016] Optionally, in the above-mentioned photovoltaic sand fixation device, when the soil moisture measured by the humidity sensor is lower than a first humidity threshold, the regulating valve is opened and the water source and the delivery pipeline are connected; when the soil moisture measured by the regulating valve is higher than a second humidity threshold, the regulating valve is closed and the water source and the delivery pipeline are cut off.

[0017] Optionally, in the photovoltaic sand fixation device, a pressure measuring element is provided on the delivery pipeline, and the pressure measuring element is connected to the control unit. When the water pressure measured by the pressure measuring element is within the pressure threshold, the opening of the regulating valve is constant; when the water pressure measured by the pressure measuring element is outside the pressure threshold, the opening of the regulating valve increases or decreases; or,

[0018] A pressure regulating valve is provided on the delivery pipeline.

[0019] Optionally, in the above photovoltaic sand fixation device, the control unit includes a gas phase monitoring device and / or a timer.

[0020] Optionally, in the above photovoltaic sand fixation device, the water-saving drip irrigation system also includes a fertilizer injection system, and the fertilizer injection system is connected to the delivery pipeline.

[0021] Optionally, in the photovoltaic sand fixation device, the delivery pipeline includes a main pipe, a branch pipe and a capillary pipe, the main pipe is connected to a water source, the branch pipe includes a plurality of pipes and is respectively connected to the main pipe, the capillary pipe includes a plurality of pipes and is respectively connected to the branch pipe, and the dripper includes a plurality of pipes and is spaced apart on each capillary pipe;

[0022] The filter and the regulating valve are both arranged on the main pipe, and the regulating valve is arranged downstream of the filter;

[0023] The fertilizer injection system is connected to the main pipe.

[0024] Optionally, in the above photovoltaic sand fixation device, the types of plants include at least one of sea buckthorn, lonshazi, haloxylon ammodendron and alfalfa.

[0025] It can be seen from the above scheme that the photovoltaic sand fixation device disclosed in this application has a sand fixation structure in the first sand fixation component arranged around the photovoltaic bracket, and the sand fixation net can be raised and lowered according to the wind speed to intercept sand and sand from the photovoltaic panel, reduce the accumulation of wind and sand on the photovoltaic panel, improve power generation efficiency, reduce cleaning costs, reduce the erosion and damage of wind and sand to the photovoltaic panel, and create a more stable environment for plant growth; the second sand fixation component includes a mixed soil layer and a grass grid, and is planted with plants. The mixed soil layer can improve the fertility and water retention capacity of the soil and provide conditions for plant growth. The grass grid can increase the surface roughness, reduce wind force, and achieve the effect of windproof sand fixation and interception of precipitation; planting plants can achieve long-term sand fixation and ecological restoration effects, and can promote the benign development of the desert ecosystem. The first sand fixation component and the second sand fixation component work together to reduce the impact of quicksand on the photovoltaic module, ensure the safe and stable operation of the photovoltaic module, extend the service life of the photovoltaic module, and improve power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the structure of the photovoltaic sand fixation device disclosed in the embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the structure of the grass grid disclosed in the embodiment of the present application;

[0029] Figure 3 It is a schematic diagram of the structure of the water-saving drip irrigation system disclosed in the embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of the structure of the wind speed sensor disclosed in the embodiment of the present application.

[0031] Among them, 100 is a photovoltaic module, 110 is a photovoltaic bracket, 111 is a wind speed sensor, and 120 is a photovoltaic panel;

[0032] 200 is a first sand fixation component, 210 is a sand fixation structure, 211 is a sand fixation pillar, and 212 is a sand fixation net;

[0033] 300 is a second sand-fixing component, 310 is a mixed soil layer, 311 is a plant, 320 is a grass grid, 321 is a fixing hole, and 330 is a sand-fixing agent coating;

[0034] 400 is a water-saving drip irrigation system, 410 is a water source, 420 is a control unit, 430 is a delivery pipeline, 431 is a main pipe, 432 is a branch pipe, 433 is a capillary tube, 440 is a regulating valve, 450 is a filter, 451 is a sewage outlet, 460 is a fertilizer injection system, and 470 is a dripper. DETAILED DESCRIPTION

[0035] The core of this application is to disclose a sand fixation device to reduce the impact of quicksand on a photovoltaic system and ensure the service life and power generation efficiency of the photovoltaic system.

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] like Figure 1 As shown, an embodiment of the present application discloses a photovoltaic sand fixation device, including a photovoltaic component 100, a first sand fixation component 200, a second sand fixation component 300 and a water-saving drip irrigation system 400.

[0038] Among them, the photovoltaic component 100 includes a photovoltaic bracket 110 and a photovoltaic panel 120 rotatably connected to the photovoltaic bracket 110. The photovoltaic bracket 110 is arranged on the ground to support the photovoltaic panel 120. A wind speed sensor 111 is arranged on the photovoltaic bracket 110. The first sand fixation component 200 includes a sand fixation structure 210 and a driving component that is transmission-connected to the sand fixation net of the sand fixation structure 210. The sand fixation structure 210 is arranged around the photovoltaic bracket 110. The driving component can drive the sand fixation net to rise and fall. The driving component is connected to the wind speed sensor 111. When the wind speed measured by the wind speed sensor 111 is large, the driving component drives the sand fixation net to rise to intercept sand from the photovoltaic panel 120. When the wind speed measured by the wind speed sensor 111 is small, the driving component drives the sand fixation net to descend so that the photovoltaic panel 120 can receive sufficient light. The specific wind speed when the driving component is in action can be set according to actual conditions. The specific structural schematic diagram of the wind speed sensor 111 is shown in FIG. Figure 4 shown.

[0039] The second sand fixation component 300 includes a mixed soil layer 310 and a grass grid 320. The mixed soil layer 310 is arranged on the ground, and the grass grid 320 is arranged on the mixed soil layer 310. The surface of the grass grid 320 is provided with a sand fixation agent coating 330. Here, it is preferred that the sand fixation agent coating 330 is coated on the surface of the grass grid 320 facing the mixed soil layer 310, and each grid of the grass grid 320 is planted with plants 311. The water-saving drip irrigation system 400 is arranged on the second sand fixation component 300 and laid on the mixed soil layer 310 to irrigate the plants 311. That is, from top to bottom, the second sand fixation component 300 includes plants 311, grass grids 320, sand fixation agent coating 330 and mixed soil layer 310 in sequence.

[0040] The photovoltaic sand fixation device disclosed in the embodiment of the present application has a sand fixation structure 210 in the first sand fixation component 200 arranged around the photovoltaic bracket 110, and the sand fixation net can be raised and lowered according to the wind speed to intercept sand from the photovoltaic panel 120, reduce the accumulation of wind and sand on the photovoltaic panel 120, improve power generation efficiency, reduce cleaning costs, reduce the erosion and damage of wind and sand to the photovoltaic panel 120, and create a more stable environment for the growth of plants 311; the second sand fixation component 300 includes a mixed soil layer 310 and a grass grid 320, and is planted with plants 311. The mixed soil layer 310 can improve the fertility and water retention capacity of the soil and provide conditions for plant growth. The grass grid 320 can increase the surface roughness, reduce wind force, and achieve the effect of windproof and sand fixation and intercepting precipitation; planting plants 311 can achieve long-term sand fixation and ecological restoration effects, and can promote the healthy development of the desert ecosystem. The first sand-fixing assembly 200 and the second sand-fixing assembly 300 work together to reduce the impact of quicksand on the photovoltaic assembly 100, ensure the safe and stable operation of the photovoltaic assembly 100, extend the service life of the photovoltaic assembly 100, and improve power generation efficiency.

[0041] It should be noted that the photovoltaic panels 120 in the photovoltaic assembly 100 are arranged in an array structure on the photovoltaic bracket 110. The photovoltaic panels 120 and the photovoltaic bracket 110 can be connected by a hinge or a pulley assembly, or the photovoltaic bracket 110 includes a support column and a rotating shaft rotatably connected to the support column, and the photovoltaic panel is connected to the rotating shaft to achieve an adjustable inclination angle of the photovoltaic panel 120. The specific method is not specifically limited.

[0042] The mixed soil layer 310 is a mixture of organic matter and sand-fixing materials, which has been specially improved to improve its water retention capacity and nutrient content. The sand-fixing agent coating 330 is preferably polyvinyl alcohol (PVA), which is evenly applied to the surface of the grass grid 320 to form a stable hardened film to enhance the stability of the grass grid 320. At the same time, the coating has a certain anti-ultraviolet ability, which can extend the service life of the grass grid 320. Figure 2As shown, fixing holes 321 are arranged around the grass grid 320 , and fixing stakes are inserted into the fixing holes 321 so that the grass grid 320 is firmly fixed on the ground.

[0043] Furthermore, in some specific embodiments, the sand fixation structure 210 includes sand fixation pillars 211 and a sand fixation net 212 , and the sand fixation net 212 can move along the axial direction of the sand fixation pillars 211 .

[0044] Furthermore, the sand-fixing net 212 can be slidably matched with the sand-fixing pillar 211 through a slider, and the driving assembly includes a driving cylinder, and the piston rod of the driving cylinder is connected to the slider. The sand-fixing net 212 can be an integrated structure or a split structure, and the split structure is preferred. The sand-fixing pillars 211 are arranged around the photovoltaic support 110 in an overall rectangular structure. Each sand-fixing net 212 is slidably matched with each sand-fixing pillar 211 through a slider, and two adjacent sand-fixing nets 212 can share a slider. Preferably, the driving cylinder corresponds to the slider one by one, and each driving cylinder is linked to achieve the synchronous rise and fall of each slider, thereby achieving the rise and fall of the sand-fixing net 212. The driving cylinder can also be replaced with a linear motor, a hydraulic cylinder, etc.

[0045] In other specific embodiments, the sand-fixing pillar 211 includes a fixed section and a movable section, and the sand-fixing net 212 is connected to the movable section, and the height of the sand-fixing net 212 can be adjusted by adjusting the length of the movable section extending from the fixed section. It can be understood by those skilled in the art that the driving component can also adopt other solutions as long as it can drive the sand-fixing net 212 to rise and fall.

[0046] Furthermore, if Figure 3 As shown, the water-saving drip irrigation system 400 includes a water source 410, a delivery pipe 430, a dripper 470 and a control unit 420. The delivery pipe 430 is connected to the water source 410. The dripper 470 is arranged at the end of the delivery pipe 430 and can be adjustable or fixed according to actual needs. The delivery pipe 430 is provided with a filter 450 and a regulating valve 440, and the regulating valve 440 is connected to the control unit 420. The mixed soil layer 310 is provided with a humidity sensor, and the humidity sensor is connected to the control unit 420. It should be noted that Figure 3 The installation positions of the regulating valve 440 and the control unit 420 shown in FIG. 4 are only for illustration.

[0047] The setting of the humidity sensor can measure the soil humidity of the mixed soil layer 310, and can control the connection or disconnection of the water source 410 and the delivery pipeline 430 according to the soil humidity, so as to carry out orderly irrigation according to the soil humidity, avoid over-irrigation, and save water.

[0048] Furthermore, when the soil moisture measured by the humidity sensor is lower than the first humidity threshold, the regulating valve 440 is opened, and the water source 410 is connected to the delivery pipe 430; when the soil moisture measured by the regulating valve 440 is higher than the second humidity threshold, the regulating valve 440 is closed, and the water source 410 is disconnected from the delivery pipe 430. The specific values ​​of the first humidity threshold and the second humidity threshold can be specifically set according to the specific irrigation requirements of the plant 311.

[0049] Preferably, the filter 450 is disposed at the water inlet of the delivery pipe 430, and the filter 450 is provided with a sewage outlet 451. The setting of the filter 450 can reduce the occurrence of the phenomenon of impurities in the water source clogging the dripper. The specific type of the filter 450 is not specifically limited, and can be specifically selected according to actual use requirements. The material of the filter 450 can be polypropylene or stainless steel.

[0050] Furthermore, in order to maintain the stability of the water pressure in the delivery pipeline 430, a pressure measuring element is provided on the delivery pipeline 430, and the pressure measuring element is connected to the control unit. When the water pressure measured by the pressure measuring element is within the pressure threshold, the opening of the regulating valve 440 is constant; when the water pressure measured by the pressure measuring element is outside the pressure threshold, the opening of the regulating valve 440 increases or decreases. Specifically, when the water pressure measured by the pressure measuring element is higher than the maximum value of the pressure threshold, the opening of the regulating valve 440 decreases or is closed; when the water pressure measured by the pressure measuring element is lower than the minimum value of the pressure threshold, the opening of the regulating valve 440 increases or is opened.

[0051] Of course, in other specific embodiments, a pressure regulating valve may also be provided on the delivery pipeline 430, and the opening of the valve may be adjusted according to the water pressure of the delivery pipeline 430. The pressure regulating valve may specifically be a self-operated regulating valve, a spring-type pressure reducing valve, or a diaphragm-type pressure reducing valve, etc. The specific type may be selected according to actual needs. The specific structure and principle of the pressure regulating valve may refer to the prior art, and will not be described in detail here.

[0052] Furthermore, the control unit includes a gas phase monitoring device and / or a timer. The gas phase monitoring device can monitor weather conditions. For example, when it rains, irrigation can be stopped, and the irrigation plan can be adjusted in time according to the weather conditions to avoid over-irrigation. The timer is used to set the start and end time of irrigation to ensure that irrigation is carried out at an appropriate time to save water.

[0053] Furthermore, if Figure 3As shown, the water-saving drip irrigation system 400 also includes a fertilizer injection system 460, which is connected to the delivery pipe 430. According to the growth conditions and environmental conditions of the plant 311, the fertilizer injection system 460 injects fertilizer into the delivery pipe 430, and the fertilizer is dissolved in water and directly delivered to the root of the plant 311 through the water-saving drip irrigation system 400, which reduces the loss of fertilizer such as volatilization in the soil, and allows the fertilizer to be more fully absorbed by the plant 311. Compared with conventional fertilization, it can save fertilizer usage and realize intelligent fertilization and irrigation. Figure 3 The specific location of the fertilizer injection system 460 shown in FIG. 4 is for illustration only.

[0054] Furthermore, if Figure 3 As shown, the delivery pipeline 430 includes a main pipe 431, a branch pipe 432 and a capillary tube 433. The main pipe 431 is connected to the water source 410. The branch pipe 432 includes a plurality of branches and is respectively connected to the main pipe 431. The capillary tube 433 includes a plurality of branches and is respectively connected to the branch pipe 432. The dripper 470 includes a plurality of drippers and is arranged at intervals on each capillary tube 433, so that the water-saving drip irrigation system 400 covers all plants 311. Preferably,

[0055] The filter 450 and the regulating valve 440 are both disposed on the main pipe 431, and the regulating valve 440 is disposed downstream of the filter 450, and the fertilizer injection system 460 is connected to the main pipe 431. It should be noted that the main pipe 431, the branch pipe 432 and the capillary tube 433 need to have good pressure resistance and corrosion resistance.

[0056] The specific installation and use process of the second sand-fixing component 300 is as follows: the mixed soil layer 310 is evenly laid on the ground, and the thickness is usually several centimeters to ensure uniform coverage. The specific laying thickness is determined according to the actual situation. The configured sand-fixing agent is evenly applied on the surface of the grass grid 320 to form a sand-fixing agent coating 330, and the grass grid 320 is laid on the mixed soil layer 310 to ensure that it is in flat contact with the mixed soil layer 310. Insert a fixing pile at the fixing hole 321 of the grass grid 320 to fix the grass grid 320. After the laying is completed, plant plants 311 in each square of the grass grid 320 and install the water-saving drip irrigation system 400, lay the main pipe 431, connect the branch pipe 432 and the capillary 433 to the position of each dripper 470, and ensure that the pipeline spacing is appropriate to ensure that each dripper 470 can be evenly irrigated. The filter 450, the regulating valve 440 and the fertilizer injection system 460 are installed at appropriate positions of the main pipe 431 and then connected to the control unit 420. A preliminary test is then performed to confirm that there is no water leakage, and the irrigation time frequency and the threshold of the moisture sensor are set through the control unit 420.

[0057] Furthermore, the grass grid 320 is woven from at least one of reed straw, corn straw, sunflower straw, wheat straw and rice straw, and the specific material can be selected according to actual conditions.

[0058] Further, the plants 311 include at least one of sea buckthorn, tamarisk, haloxylon ammodendron and alfalfa, and may also include other types of plants 311. The plants 311 should be drought-tolerant, have deep roots, sand-fixing ability, windproof properties and low maintenance, and be suitable for arid areas lacking manpower and water resources.

[0059] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0060] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0061] It should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0062] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A photovoltaic sand fixation device, characterized in that: include: A photovoltaic assembly (100), the photovoltaic assembly (100) comprising a photovoltaic support (110) and a photovoltaic panel (120) rotatably connected to the photovoltaic support (110), the photovoltaic support (110) being provided with a wind speed sensor (111); A first sand-fixing component (200), the first sand-fixing component (200) comprising a sand-fixing structure (210) and a driving component drivingly connected to a sand-fixing net of the sand-fixing structure (210), the sand-fixing structure (210) being arranged around the photovoltaic support (110), the driving component being capable of driving the sand-fixing net to rise and fall, and the driving component being connected to the wind speed sensor (111); A second sand-fixing component (300), the second sand-fixing component (300) comprising a mixed soil layer (310) and grass grids (320), the mixed soil layer (310) being arranged on the ground, the grass grids (320) being arranged on the mixed soil layer (310), a sand-fixing agent coating (330) being arranged on the surface of the grass grids (320), and plants (311) being planted in each grid of the grass grids (320); A water-saving drip irrigation system (400), wherein the water-saving drip irrigation system (400) is arranged on the second sand fixation component (300) to irrigate the plants (311).

2. The photovoltaic sand fixation device according to claim 1, characterized in that: The sand-fixing structure (210) comprises a sand-fixing pillar (211) and a sand-fixing net (212); the sand-fixing net (212) is movable along the axial direction of the sand-fixing pillar (211).

3. The photovoltaic sand fixation device according to claim 2, characterized in that: The sand-fixing net (212) is slidably matched with the sand-fixing pillar (211) via a slider, and the driving assembly comprises a driving cylinder, a piston rod of which is connected to the slider.

4. The photovoltaic sand fixation device according to claim 1, characterized in that: The water-saving drip irrigation system (400) comprises a water source (410), a delivery pipeline (430), a dripper (470) and a control unit (420); the delivery pipeline (430) is in communication with the water source (410); the dripper (470) is arranged at the end of the delivery pipeline (430); a filter (450) and a regulating valve (440) are arranged on the delivery pipeline (430); and the regulating valve (440) is connected to the control unit (420); The mixed soil layer (310) is provided with a humidity sensor, and the humidity sensor is connected to the control unit (420).

5. The photovoltaic sand fixation device according to claim 4, characterized in that: When the soil moisture measured by the humidity sensor is lower than a first humidity threshold, the regulating valve (440) is opened, and the water source (410) is connected to the delivery pipeline (430); when the soil moisture measured by the regulating valve (440) is higher than a second humidity threshold, the regulating valve (440) is closed, and the water source (410) is disconnected from the delivery pipeline (430).

6. The photovoltaic sand fixation device according to claim 5, characterized in that: The delivery pipeline (430) is provided with a pressure measuring element, the pressure measuring element is connected to the control unit (420), and when the water pressure measured by the pressure measuring element is within a pressure threshold, the opening of the regulating valve (440) is constant; when the water pressure measured by the pressure measuring element is outside the pressure threshold, the opening of the regulating valve (440) increases or decreases; or, The delivery pipeline (430) is provided with a pressure regulating valve.

7. The photovoltaic sand fixation device according to claim 6, characterized in that: The control unit includes a gas phase monitoring device and / or a timer.

8. The photovoltaic sand fixation device according to claim 4, characterized in that: The water-saving drip irrigation system (400) further comprises a fertilizer injection system (460), wherein the fertilizer injection system (460) is in communication with the delivery pipeline (430).

9. The photovoltaic sand fixation device according to claim 8, characterized in that: The delivery pipeline (430) comprises a main pipe (431), a branch pipe (432) and a capillary tube (433); the main pipe (431) is connected to the water source (410); the branch pipes (432) comprise a plurality of pipes and are respectively connected to the main pipe (431); the capillary tubes (433) comprise a plurality of pipes and are respectively connected to the branch pipes (432); and the drippers (470) comprise a plurality of pipes and are arranged at intervals on each of the capillary tubes (433); The filter (450) and the regulating valve (440) are both arranged on the main pipe (431), and the regulating valve (440) is arranged downstream of the filter (450); The fertilizer injection system (460) is connected to the main pipe (431).

10. The photovoltaic sand fixation device according to any one of claims 1 to 9, characterized in that: The plant (311) comprises at least one of seabuckthorn, dracaena, haloxylon ammodendron and alfalfa.

Images