Sun-shading and precipitation regulating device and control method for extreme hydrothermal control experiment

Abstract

This invention discloses a shading and precipitation control device and method for extreme hydrothermal control experiments, belonging to the technical field of ecological environment simulation and field control experimental devices. The device includes a support frame, a shading component, and a precipitation control component. The support frame is a rectangular frame structure formed by connecting several vertical first support rods and horizontal second support rods. The shading component includes a sunshade mounted on a third support rod, with a flow guiding structure on its surface. The precipitation control component includes a flow guide pipe, a water delivery pipe, and precipitation nozzles. A water storage structure is provided on the second support rod, with a through hole connecting to the flow guide pipe. Through the above structure, the sunshade is tilted and combined with the flow guiding structure to guide precipitation. The precipitation control component collects and controls precipitation through flow guiding, water storage, and redistribution, achieving the regulation of hydrothermal factors without changing the background environmental conditions. It is suitable for in-situ field hydrothermal control experiments.

Description

Technical Field

[0001] This invention relates to the field of ecological environment simulation and field control experimental device technology, specifically to a shading and precipitation regulation device and control method for extreme hydrothermal control experiments. Background Technology

[0002] Against the backdrop of global warming, the frequency of extreme high temperatures, extreme precipitation, and extreme warm and humid events (combined warm and humid events) has increased significantly, exerting a significant impact on hydrothermal processes in alpine grassland ecosystems and permafrost regions. To study the response of ecosystems to extreme hydrothermal conditions, controlled field experiments have gradually become an important research method.

[0003] In existing technologies, shade nets and awnings are often used to reduce surface radiation intensity to suppress surface warming, or rain shelters are used to block natural precipitation. However, these devices typically only regulate a single environmental factor (temperature or precipitation) and have the following problems in practical applications:

[0004] First, while shading devices reduce solar radiation, they often block natural precipitation, altering the water input conditions of the sample plots. Second, although rain-proof devices can isolate precipitation, they alter radiation conditions, thus affecting the surface energy balance. Third, existing devices lack the ability to coordinate and regulate hydrothermal factors, making it difficult to meet the needs of in-situ field experiments for simulating the real environment.

[0005] Therefore, it is necessary to provide a device that can collect and redistribute precipitation while reducing radiation, in order to improve the reliability of extreme hydrothermal control experiments in the field. Summary of the Invention

[0006] The purpose of this invention is to provide an experimental device with a detachable structure that can achieve shading and precipitation control.

[0007] A shading and precipitation control device for an extreme hydrothermal control experiment includes: a support frame, comprising a rectangular frame structure detachably connected by several vertical first support rods and several horizontal second support rods, with third support rods obliquely installed on a set of opposing second support rods, the opposing third support rods being connected by a central crossbar; a shading assembly, including at least one pair of shading covers detachably installed on the third support rods, one end of each shading cover being connected to the central crossbar and the other end being connected to or abutting against the second support rod, the surface of the shading cover being provided with a flow guiding structure for guiding water flow; and a precipitation control assembly, detachably installed on the second support rods, including a flow guide pipe, a water delivery pipe, and a precipitation nozzle, the second support rod being provided with a flow guiding structure for guiding water flow. A water storage structure for collecting water is provided. A through hole communicating with the water storage structure is provided on the second support rod. One end of the guide pipe is connected to the through hole, and the other end is connected to the inlet end of the water supply pipe. A plurality of precipitation nozzles are provided along the length of the water supply pipe. A control system is provided, including a meteorological parameter detector and a controller. The meteorological parameter detector is provided on the first support rod and is used to collect temperature and precipitation data of the experimental area in real time. The controller is electrically connected to the meteorological parameter detector and stores temperature and precipitation thresholds for extreme hydrothermal events. Based on the deviation between the real-time data collected by the meteorological parameter detector and the thresholds stored in the controller, control commands are generated to adjust the on / off state of the precipitation nozzles, thereby achieving coordinated regulation of hydrothermal factors.

[0008] Preferably, the airflow guiding structure is a plurality of airflow guiding grooves disposed on the surface of the sunshade, and the plurality of airflow guiding grooves are arranged in an array along the direction parallel to the sunshade and the second support rod.

[0009] Preferably, the inner wall of the through hole is provided with a spiral groove.

[0010] Preferably, the guide tube is inclined and connected to the through hole via a connector, the connector having a trumpet-shaped structure.

[0011] Preferably, the water supply pipe is provided with an adjustable water flow blocking structure, including an arc-shaped baffle that is slidably disposed in the water supply pipe. The water supply pipe has a first through hole connected to a rain spray nozzle, and the arc-shaped baffle has a second through hole. The first through hole and the second through hole are connected or misaligned in different positions.

[0012] Preferably, the arc-shaped baffle is located on the outer end of the water supply pipe and is connected to a driving assembly for driving it to move axially along the water supply pipe. The driving assembly includes a cylinder driving structure, the cylinder is mounted on the second support rod, and its output end is connected to the arc-shaped baffle through a connecting rod.

[0013] Preferably, both the guide pipe and the water supply pipe are made of rigid pipe.

[0014] Preferably, the sunshade has a double-layer structure, with the outer layer being a rigid light-transmitting sheet and the inner layer being a UV-resistant polyester fabric, wherein the rigid light-transmitting sheet is a polycarbonate sheet.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By integrating the support frame, shading components, precipitation control components, and control system, the system achieves coordinated control of extreme hydrothermal factors in the field. The support frame adopts a rectangular frame structure with a detachable connection between the first vertical support rod and the second horizontal support rod, combined with an inclined third support rod and a central crossbar, forming a stable support system that can flexibly adapt to different terrains. This solves the problem of existing devices having fixed structures and being difficult to deploy in the field. Its detachable nature facilitates transportation, installation, and maintenance, reducing experimental preparation costs.

[0016] The shading component achieves shading through a shading canopy installed at an angle on the third support rod. On the one hand, the shading canopy effectively reduces the intensity of solar radiation to suppress extreme high temperatures and avoids the complete blockage of precipitation by traditional shading nets. On the other hand, the flow guiding structure guides natural precipitation to flow directionally along the canopy surface, which not only prevents rainwater from accumulating on the canopy surface and affecting the shading effect, but also creates conditions for subsequent precipitation collection, breaking through the limitation of a single shading device interfering with water input.

[0017] The precipitation control component collects the rainwater from the diversion flow through the water storage structure on the second support rod, and then transports it to the precipitation nozzles through the through hole, the diversion pipe, and the water delivery pipe. This realizes the collection, temporary storage, and redistribution of precipitation, and can actively replenish water during droughts and actively collect water during wet periods, thus solving the drawback of rain-shielding devices changing radiation conditions. The combined design of the diversion pipe and the water delivery pipe optimizes the water flow path and ensures efficient precipitation distribution. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the support frame and precipitation control component of the present invention.

[0020] Figure 3 This is a partial structural diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the spiral groove structure inside the through hole of the present invention.

[0022] Figure 5 This is a schematic diagram of the internal structure of the water pipe of the present invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Support frame; 101. First support rod; 102. Second support rod; 103. Third support rod; 104. Central crossbar; 2. Sunshade; 3. Flow guiding structure; 4. Rainfall control component; 401. Flow guiding pipe; 402. Water delivery pipe; 403. Rainfall nozzle; 404. Through hole; 405. Water storage structure; 5. Spiral groove; 6. Connector; 7. Arc-shaped baffle; 8. First through hole; 9. Drive assembly; 901. Cylinder; 902. Connecting rod; 10. Second through hole. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-5 To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art.

[0025] The terms "first," "second," and similar words used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Words such as "comprising" or "including" indicate that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," "lower," "far," "near," "front," and "rear" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in this invention are not strictly drawn to scale; the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this invention are merely structural schematic diagrams.

[0026] This invention provides a shading and precipitation control device for extreme hydrothermal control experiments, such as... Figures 1-4As shown, the system includes a support frame 1, which is a rectangular frame structure formed by several vertical first support rods 101 and several horizontal second support rods 102 detachably connected. Third support rods 103 are obliquely installed on a set of opposing second support rods 102, and the opposing third support rods 103 are connected by a central crossbar 104. A sunshade assembly includes at least one pair of sunshades 2 detachably installed on the third support rods 103. One end of the sunshade 2 is connected to the central crossbar 104, and the other end is connected to or abuts against the second support rods 102. The surface of the sunshade 2 is provided with a flow guiding structure 3 for guiding water flow. A precipitation control assembly 4 is detachably installed on the second support rods 102, including a flow guide pipe 401, a water supply pipe 402, and a precipitation nozzle 403. The second support rods 102 are provided with… A water storage structure 405 for collecting water has a through hole 404 on the second support rod 102 that communicates with the water storage structure 405. One end of the guide pipe 401 is connected to the through hole 404, and the other end is connected to the water inlet of the water supply pipe 402. Several precipitation nozzles 403 are arranged along the length of the water supply pipe 402. The control system includes a meteorological parameter detector and a controller. The meteorological parameter detector is set on the first support rod 101 and is used to collect temperature and precipitation data of the experimental area in real time. The controller is electrically connected to the meteorological parameter detector and stores temperature and precipitation thresholds for extreme hydrothermal events. Based on the deviation between the real-time data collected by the meteorological parameter detector and the thresholds stored in the controller, a control command is generated to adjust the on / off state of the precipitation nozzles 403 to achieve coordinated regulation of hydrothermal factors.

[0027] In this embodiment, by integrating the support frame 1, the shading component, the precipitation control component 4, and the control system, the coordinated control of extreme hydrothermal factors in the field is realized. The support frame 1 adopts a rectangular frame structure with a vertical first support rod 101 and a horizontal second support rod 102 that can be detachably connected. Combined with the inclined third support rod 103 and the middle crossbar 104, a stable support system that can flexibly adapt to different terrains is formed, which solves the problem of the fixed structure of existing devices and the difficulty of field deployment. Its detachable characteristics facilitate transportation, installation and maintenance, and reduce experimental preparation costs.

[0028] The shading component achieves shading through the shading cover 2, which is installed at an angle on the third support rod 103. On the one hand, the shading cover 2 effectively reduces the intensity of solar radiation to suppress extreme high temperatures and avoids the complete blockage of precipitation by traditional shading nets. On the other hand, the flow guiding structure 3 guides natural precipitation to flow directionally along the cover surface, which not only prevents rainwater from accumulating on the cover surface and affecting the shading effect, but also creates conditions for subsequent precipitation collection, breaking through the limitation of a single shading device interfering with water input.

[0029] The precipitation control component 4 collects the rainwater from the diversion through the water storage structure 405 on the second support rod 102, and transports it to the precipitation nozzle 403 through the through hole 404, the diversion pipe 401, and the water delivery pipe 402. This realizes the collection, temporary storage, and redistribution of precipitation, and can actively replenish water during drought and actively collect water during humid periods, thus solving the drawback of rain-shielding devices changing radiation conditions. The combined design of the diversion pipe 401 and the water delivery pipe 402 optimizes the water flow path and ensures efficient precipitation distribution.

[0030] Preferred, such as Figures 1-2 As shown, the airflow guiding structure 3 consists of several airflow guiding grooves disposed on the surface of the sunshade 2, and the several airflow guiding grooves are arranged in an array along the parallel direction of the sunshade 2 and the second support rod 102.

[0031] In this embodiment, the array design of the diversion channels is evenly distributed along the long side of the sunshade 2, maximizing the coverage of the rain-receiving area of ​​the cover surface. This allows natural precipitation to be collected in a directional manner along the channels, avoiding water dispersion or local water accumulation caused by the deviation of the tilt angle of the cover surface. It can quickly divert water without occupying too much shading area, ensuring that the shading function is not significantly affected.

[0032] Preferred, such as Figures 3-4 As shown, a spiral groove 5 is provided on the inner wall of the through hole 404.

[0033] In this embodiment, the spiral groove 5 extends in a spiral shape along the inner wall of the through hole 404. When rainwater in the water storage structure 405 flows into the guide pipe 401 through the through hole 404, the water flow is guided by the spiral groove 5 to generate a swirling flow. The centrifugal force of the swirling flow can throw suspended impurities in the water toward the hole wall and carry them away with the water flow, reducing the probability of impurities accumulating and clogging the hole. At the same time, the swirling flow enhances the inertia of the water flow, avoiding the phenomenon of flow interruption caused by water level fluctuations. Especially when the water volume is low, it can still maintain stable flow and enhance the power of rainwater entering the guide pipe 401 and flowing into the water supply pipe 402.

[0034] Preferred, such as Figures 1-2 As shown, the guide tube 401 is inclined and connected to the through hole 404 through the connector 6, which has a trumpet-shaped structure.

[0035] In this embodiment, the inclined arrangement of the guide pipe 401 fully utilizes the principle of gravity flow, allowing rainwater in the water storage structure 405 to be transported to the water supply pipe 402 without additional power, thus reducing energy consumption and device complexity; it also prevents the water flow speed from being too fast, which could cause erosion of the inner wall of the water supply pipe 402; the large-diameter end and the small-diameter end of the trumpet-shaped connector 6 form a gradual expansion to a gradual contraction transition, which not only increases the contact area with the through hole 404 and enhances the connection firmness, but also reduces the local resistance at the water inlet through the large-diameter design, avoiding turbulence and pressure loss caused by abrupt changes in the orifice diameter.

[0036] Preferred, such as Figures 2-4As shown, the water supply pipe 402 is provided with an adjustable water flow blocking structure, including an arc-shaped baffle 7 slidably disposed in the water supply pipe 402, a first through hole 8 connected to the rain spray nozzle 403 on the water supply pipe 402, and a second through hole 10 on the arc-shaped baffle 7. The first through hole 8 and the second through hole 10 are connected or misaligned in different positions.

[0037] In this embodiment, the on / off control of the rainfall nozzle 403 is achieved, replacing the complex structure of traditional mechanical valves. When the arc-shaped baffle 7 slides along the axial direction of the water supply pipe 402, the relative position change between the second through hole 10 and the first through hole 8 on it can directly control the opening of the water flow channel, meeting the water replenishment needs under different drought conditions. Compared with solenoid valves, this water-blocking structure has no electronic components, strong anti-electromagnetic interference capability, and is suitable for strong electromagnetic environments in the field.

[0038] Preferred, such as Figures 1-5 As shown, the arc-shaped baffle 7 is located on the outside of the water supply pipe 402 and is connected to a drive assembly 9 at one end. The drive assembly 9 is used to drive the baffle to move along the axial direction of the water supply pipe 402. The drive assembly 9 includes a cylinder drive structure 901. The cylinder 901 is mounted on the second support rod 102 and its output end is connected to the arc-shaped baffle 7 through the connecting rod 902.

[0039] In this embodiment, the cylinder 901 is powered by compressed air, providing stable output thrust and precise stroke control. It can quickly respond to controller commands, ensuring that the rain nozzle 403 opens / closes promptly when the temperature or precipitation parameters exceed the preset threshold. The connecting rod 902 uses a rigid material to connect the output end of the cylinder 901 to the arc-shaped baffle 7, avoiding displacement deviation during transmission and ensuring the alignment accuracy of the second through hole 10 and the first through hole 8.

[0040] Preferred, such as Figures 1-3 As shown, both the guide pipe 401 and the water supply pipe 402 are rigid pipes.

[0041] In this embodiment, the guide pipe 401 and the water supply pipe 402 are made of rigid pipe, which has higher compressive strength and impact resistance than soft pipe. It can withstand deformation and damage caused by strong winds, falling rocks or animal collisions in the wild. The rigid pipe has good straightness and can be precisely arranged in the parallel direction of the second support rod 102 to avoid local water accumulation or air blockage caused by pipe bending, ensuring continuous and stable water supply process and providing a guarantee for uniform water output of the rain spray head 403.

[0042] Preferred, such as Figures 1-3 As shown, the sunshade 2 has a double-layer structure, with the outer layer being a rigid light-transmitting panel and the inner layer being a UV-protective polyester fabric. The rigid light-transmitting panel is a polycarbonate panel.

[0043] In this embodiment, the sunshade 2 adopts a double-layer structure, with an outer layer of polycarbonate sheet and an inner layer of UV-resistant polyester fabric. This optimizes sunshade and protection performance; the polycarbonate sheet provides high strength and light transmission control, while the UV-resistant fabric blocks harmful radiation. The double-layer structure enhances heat insulation and extends the lifespan of the sunshade 2.

[0044] The method of using the shading and precipitation control device for the extreme hydrothermal control experiment of the present invention is as follows: When the device of the present invention is in use, the support frame 1 is installed on the ground to be tested, and the sunshade component is set above the support frame 1 to form a sunshade structure. The support frame 1 forms a stable rectangular frame structure through the first support rod 101 and the second support rod 102, and the oppositely arranged third support rods 103 are connected by a central crossbar 104 to form a spatial structure for supporting the sunshade 2.

[0045] Under natural precipitation conditions, rainwater flows along the guide structure 3 on the surface of the sunshade 2 and collects in the water storage structure 405 set on the second support rod 102. Then, it enters the guide pipe 401 through the through hole 404 and is transported to the water supply pipe 402 under the action of gravity. Finally, it is redistributed to the experimental area through the rainwater nozzle 403, thereby realizing the guidance and redistribution of the precipitation path.

[0046] When precipitation regulation is required, the arc-shaped baffle 7 is driven to move axially along the water supply pipe 402 by the drive component 9, so that the second through hole 10 on the arc-shaped baffle 7 and the first through hole 8 on the water supply pipe 402 are in a connected or misaligned state, thereby changing the water outlet state of the precipitation nozzle 403 and realizing the on / off control or flow regulation of precipitation.

[0047] The meteorological parameter detector is set on the support frame 1 or in the experimental area to collect temperature and precipitation data in real time and is electrically connected to the controller. The controller generates corresponding control commands based on the deviation between the monitoring data and the preset threshold, and adjusts the position of the arc baffle 7 through the drive component 9 to change the connection state between the first through hole 8 and the second through hole 10 in the water supply pipe 402.

[0048] The preset threshold can be determined based on the percentile of historical meteorological data to correspond to different levels of extreme hydrothermal events; the controller outputs corresponding control signals according to the degree of deviation between the monitored value and the threshold to realize the graded or continuous adjustment of precipitation output.

[0049] During the adjustment process, the controller continuously receives feedback data from the sensors and dynamically corrects the precipitation regulation status, thereby forming a closed-loop control mechanism to improve the accuracy and stability of precipitation regulation.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shading and precipitation control device for extreme hydrothermal control experiments, characterized in that, include: The support frame is a rectangular frame structure formed by several vertical first support rods and several horizontal second support rods that can be detachably connected. A third support rod is obliquely installed on a group of opposing second support rods, and the opposing third support rods are connected by a central crossbar. The sunshade assembly includes at least one pair of sunshades that are detachably mounted on the third support rod. One end of each sunshade is connected to the central crossbar, and the other end is connected to or abuts against the second support rod. The surface of the sunshade is provided with a flow guiding structure for guiding water flow. The precipitation control component is detachably installed on the second support rod and includes a guide pipe, a water supply pipe, and precipitation nozzles. The second support rod is provided with a water storage structure for collecting water. A through hole communicating with the water storage structure is opened on the second support rod. One end of the guide pipe is connected to the through hole, and the other end is connected to the water inlet of the water supply pipe. A plurality of precipitation nozzles are provided along the length of the water supply pipe. The control system includes a meteorological parameter detector and a controller. The meteorological parameter detector is mounted on the first support rod and is used to collect real-time temperature and precipitation data of the experimental area. The controller is electrically connected to the meteorological parameter detector and stores temperature and precipitation thresholds for extreme hydrothermal events. Based on the deviation between the real-time data collected by the meteorological parameter detector and the thresholds, the controller generates control commands to adjust the on / off state of the precipitation nozzles, thereby achieving coordinated regulation of hydrothermal factors.

2. The shading and precipitation control device for an extreme hydrothermal control experiment as described in claim 1, characterized in that, The airflow guiding structure consists of several airflow guiding grooves disposed on the surface of the sunshade, and the several airflow guiding grooves are arranged in an array along the direction parallel to the sunshade and the second support rod.

3. The shading and precipitation control device for an extreme hydrothermal control experiment as described in claim 1, characterized in that, The inner wall of the through hole is provided with a spiral groove.

4. The shading and precipitation control device for an extreme hydrothermal control experiment as described in claim 1, characterized in that, The guide tube is inclined and connected to the through hole through a connector, which has a trumpet-shaped structure.

5. The shading and precipitation control device for an extreme hydrothermal control experiment as described in claim 1, characterized in that, The water supply pipe is equipped with an adjustable water flow blocking structure, including an arc-shaped baffle that is slidably disposed inside the water supply pipe. The water supply pipe has a first through hole that connects to the rain spray nozzle, and the arc-shaped baffle has a second through hole. The first through hole and the second through hole are connected or misaligned in different positions.

6. The shading and precipitation control device for an extreme hydrothermal control experiment as described in claim 5, characterized in that, The arc-shaped baffle is located on the outside of the water supply pipe and is connected to a driving component at one end for driving it to move axially along the water supply pipe. The driving component includes a cylinder driving structure, the cylinder is mounted on the second support rod, and its output end is connected to the arc-shaped baffle through a connecting rod.

7. The shading and precipitation control device for an extreme hydrothermal control experiment as described in claim 1, characterized in that, Both the guide pipe and the water supply pipe are made of rigid materials.

8. The shading and precipitation control device for an extreme hydrothermal control experiment as described in claim 1, characterized in that, The sunshade has a double-layer structure, with an outer layer of rigid light-transmitting sheet material and an inner layer of UV-resistant polyester fabric, wherein the rigid light-transmitting sheet material is a polycarbonate sheet.

9. A control method for a shading and precipitation regulation device based on any one of claims 1 to 8 in an extreme hydrothermal control experiment, characterized in that, Includes the following steps: The support frame is installed on the sample site to be tested, and a rectangular frame is formed by connecting the first vertical support rod and the second horizontal support rod; the third support rod is installed obliquely on a set of opposing second support rods, and the opposing third support rods are connected by the middle crossbar to stabilize the space; The sunshade component is detachably installed on the third support rod to ensure that the sunshade surface retains the flow guiding structure; the precipitation control component is installed on the second support rod, the water storage structure is set, the through hole is opened to connect the through hole, the flow guiding pipe connects the through hole to the water inlet end of the water supply pipe, and several precipitation nozzles are arranged along the length of the water supply pipe; The meteorological parameter detector in the control system collects temperature and precipitation data of the experimental area in real time and transmits the data to the controller; the controller compares the real-time temperature and precipitation data with preset temperature and precipitation thresholds. When the real-time temperature is lower than the preset temperature threshold and the real-time precipitation is lower than the preset precipitation threshold, no adjustment is made, the sunshade is kept closed, and the rain spray nozzles are kept open; the rainwater collected by the water storage structure flows into the guide pipe through the through hole, is transported to the rain spray nozzles along the water supply pipe, and is sprayed onto the experimental area. When the real-time temperature is higher than the preset temperature threshold and the real-time precipitation is lower than the preset precipitation threshold, the rainwater nozzle remains open; the rainwater collected by the water storage structure flows into the guide pipe through the through hole, is transported to the rainwater nozzle along the water supply pipe, and is sprayed onto the experimental area. When the real-time temperature is lower than the preset temperature threshold and the real-time precipitation is higher than the preset precipitation threshold, the rainwater nozzles are controlled to shut off; the rainwater flows along the guide structure of the sunshade and collects in the water storage structure for temporary storage, and is no longer sprayed onto the experimental area.

Images