Canopy based on in-situ rainfall control experiment

Abstract

The invention discloses a canopy based on an in-situ rainfall control experiment, and the canopy comprises a rainwater collection mechanism which is used for collecting rainwater; the rain storage mechanism comprises a water storage barrel communicated with the rain collection mechanism, a water suction pump and a support are arranged in the water storage barrel, a rotatable water turning hopper is arranged on the support, and the water turning hopper is used for receiving water discharged by the rain collection mechanism and pouring the water into the water storage barrel so as to adjust starting and stopping of the water suction pump; and the rainfall simulation mechanism is communicated with the water outlet end of the water suction pump. By arranging the water turning hopper, water can enter the water storage barrel only when the water in the water turning hopper reaches a certain amount, the situation that the water suction pump is always started and stopped for multiple times under the condition that rainfall is small or rainfall is interrupted can be effectively avoided, and energy consumption is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment for rainwater collection and utilization, and more specifically to a rain shelter based on an in-situ precipitation control experiment. Background Art

[0002] In the past few decades, global warming has accelerated the hydrological cycle, leading to changes in precipitation patterns at global and regional scales. With the intensification of global precipitation fluctuations, the increase in the frequency of extremely dry and extremely wet years is a significant feature of future global climate change. This change in precipitation pattern is expected to have significant ecological and environmental consequences, including the growth of terrestrial vegetation, the evolution of microbial communities, and changes in ecosystem functions, especially in water-stressed areas, such as arid and semi-arid ecosystems. These ecosystems account for more than 40% of the Earth's land surface and are extremely sensitive to changes in precipitation regimes due to long-term suffering from low precipitation inputs. Therefore, revealing the response mechanism of biogeochemical processes in terrestrial ecosystems to changes in precipitation patterns is of vital importance for predicting the evolution trend of terrestrial ecosystem structure and function under future climate change. This can not only provide scientific theoretical support for the rational management of water and soil resources, but also provide effective guidance for agricultural disaster prevention and mitigation. However, most of the current models predicting the response of terrestrial ecosystems to precipitation changes are based on historical data and are mostly linear models. However, with the increasing severity of extreme droughts and humidity and the significant increase in the frequency of extreme precipitation years, it is still unclear whether the response of terrestrial ecosystems to precipitation changes still follows the linear response law and the driving mechanism behind it. These issues remain unresolved.

[0003] In order to make up for the shortcomings of model simulation, it is particularly important to carry out field in-situ monitoring experiments. Through long-term control experiments and sampling analysis, we can more deeply reveal the ecological and environmental effects brought about by changes in precipitation patterns. In the existing field precipitation control experimental technology and equipment, a comprehensive control method that integrates interception, storage and increase of precipitation has been proposed. This method usually intercepts precipitation by setting up multiple transparent V-shaped PC plates, and collects the collected rainwater into a container, and then uses a water suction pump to spray the rainwater to the experimental area where precipitation needs to be increased, thereby realizing the automatic allocation of field increase and decrease of rainfall.

[0004] However, existing precipitation control methods also have certain limitations. In terms of increasing precipitation treatment, although some studies have used sensors to control the opening and closing of water suction pumps to achieve real-time spraying, in the case of small or intermittent precipitation, the water suction pumps may be frequently opened and closed, or even cause empty suction, which has an adverse effect on the continuous use of equipment and the reduction of energy consumption. Therefore, we need to further improve and optimize precipitation control technologies and devices to more accurately simulate and predict the impact of future changes in precipitation patterns on terrestrial ecosystems. Summary of the invention

[0005] One purpose of the present invention is to provide a canopy based on an in-situ precipitation control experiment, which is equipped with a water bucket. When the water in the water bucket reaches a certain amount, the water can enter the water storage barrel. This arrangement can effectively avoid the water suction pump being always opened and closed multiple times when the precipitation is small or intermittent, thereby effectively reducing energy consumption.

[0006] In order to achieve these purposes and other advantages of the present invention, a canopy based on an in-situ precipitation control experiment is provided, comprising:

[0007] A rainwater collection mechanism, which is used to collect rainwater above the rainfall reduction experimental area;

[0008] A rain storage mechanism, comprising a water storage barrel connected to the rain collection mechanism, wherein a water suction pump and a bracket are arranged in the water storage barrel, and a rotatable water tipping bucket is arranged on the bracket, wherein the water tipping bucket is used to receive the water discharged by the rain collection mechanism and pour the water into the water storage barrel to adjust the opening and closing of the water suction pump;

[0009] The simulated rainfall mechanism is connected to the water outlet of the water suction pump, and is used for spraying rainwater to the rainfall enhancement experimental area.

[0010] Preferably, a water guide platform is provided at the bottom of the water storage barrel, the top surface of the water guide platform is recessed downward to form a water collecting trough, the water inlet end of the water suction pump is connected to the lower end of the water collecting trough, a plurality of water guide plates are provided at intervals on the water guide platform, and the water guide plates are all provided with water guide ports, wherein the water guide plates are located between the water outlet end of the water bucket and the water collecting trough, and the water guide ports are successively increased in size along the direction away from the water collecting trough.

[0011] Preferably, the rain collecting mechanism includes a support frame arranged above the rain reduction experimental area, a plurality of retractable rain collecting plates arranged at intervals on the support frame, and a driving assembly for driving the plurality of rain collecting plates to retract and extend, the rain collecting plate is V-shaped and one side of the rain collecting plate is hinged to the support frame, and the other side can slide on the support frame to adjust the rain receiving area of ​​the rain collecting plate by adjusting the angle of the rain collecting plate, the rain collecting plate is arranged at an angle, and the support frame is provided with a water collecting trough at the lower end of the rain collecting plate to receive rainwater from the plurality of rain collecting plates, the water collecting trough is arranged at an angle, and the water outlet end of the water collecting trough is connected to a drain pipe, and the drain pipe extends into the water storage barrel and is located above the water tipping bucket to guide water into the water tipping bucket.

[0012] Preferably, a rotating motor is provided at the high end and the low end of the support frame, the output shaft of the rotating motor is connected to a screw rod, a plurality of movable sliding seats are provided on the screw rod at intervals, and the plurality of sliding seats on the same screw rod are connected one-to-one with the sliding edges of a plurality of rain collecting plates, so that the rain collecting plates can be driven to slide by the rotation of the screw rod.

[0013] Preferably, a plurality of U-shaped fixing plates are provided on the support frame at intervals along the inclination direction of the rain collecting plate, two vertical sides of the fixing plate are connected to the support frame, the rain collecting plate is located above the horizontal side of the fixing plate, a plurality of first springs are provided on the horizontal side of the fixing plate at intervals along its length direction, the top ends of the plurality of first springs are commonly connected to a support plate, and the support plate is in contact with the rain collecting plate to support the rain collecting plate.

[0014] Preferably, the rainfall simulation mechanism includes a fixed frame arranged above the rain enhancement experimental area, a diversion pipe arranged at the top of the fixed frame, the diversion pipe is connected to the water outlet end of the water suction pump, and a plurality of sprinklers are arranged at intervals on the diversion pipe.

[0015] Preferably, a first isolation plate is circumferentially provided at the lower portion of the fixing frame.

[0016] Preferably, the bracket includes two rotating shafts rotatably connected to the inner wall of the water storage bucket, the two rotating shafts are fixedly connected to the water tipping bucket to support the water tipping bucket, the rotating shaft is provided with a baffle, the inner wall of the water storage bucket is provided with two blocks, the two blocks are arranged in a one-to-one correspondence with the two baffles, and the block is provided with a pressure sensor, a controller connected to the pressure sensor, and a counter connected to the controller to count the number of times the water tipping bucket flips.

[0017] Preferably, the water outlet end of the water collection tank is connected with a connecting pipe, a filter barrel is provided below the connecting pipe, an annular opening is provided at the upper part of the side wall of the filter barrel, an annular filter net is provided in the opening, wherein the filter barrel is coaxially provided with a water guide cylinder in the circumferential direction, and the bottom end of the water guide cylinder is connected with the drain pipe;

[0018] The anti-clogging component comprises a driving cylinder arranged on the outer side of the bottom end of the filter barrel, a second spring is arranged on the inner side of the bottom end of the driving cylinder, a sealing plug is arranged at the end of the second spring and can slide up and down sealingly relative to the driving cylinder, a driving rod is arranged on the sealing plug, the driving rod slides sealingly through the bottom end of the filter barrel and extends into the filter barrel, a pair of connecting rods are horizontally arranged at the end of the driving rod, the pair of connecting rods are commonly connected with an annular scraper, the surface of the scraper facing the side wall of the filter barrel is covered with a brush, the brush contacts the filter screen, wherein a water inlet is arranged on the upper part of the driving cylinder, the water inlet is connected with the bottom end of the water guide cylinder to allow rainwater to enter the driving cylinder and drive the sealing plug to move downward, a seepage pipe is arranged on the driving cylinder, the bottom end of the seepage pipe is connected with the drain pipe, and the seepage pipe is located between the highest position and the lowest position of the sealing plug;

[0019] When the sealing plug moves to the highest position under the elastic action of the second spring, the scraper is located above the filter net; when the sealing plug moves to the lowest position under the action of rainwater, the scraper is located below the filter net.

[0020] Preferably, a partition plate is horizontally provided at the part of the filter barrel below the filter screen, the drive rod slides through the partition plate, a plurality of water outlets are provided on the partition plate, the lower end of the connecting pipe is connected to two water inlet pipes, both of which pass through the partition plate and extend under the partition plate, a residue cleaning port is provided on the partition plate, and an openable and closable cover is provided at the residue cleaning port.

[0021] The present invention has at least the following beneficial effects:

[0022] First, the present invention sets a water bucket, and the water can enter the water storage barrel only when the water in the water bucket reaches a certain amount. This setting can effectively avoid the water suction pump being opened and closed multiple times when the precipitation is small or intermittent, effectively reducing energy consumption.

[0023] Second, the present invention provides a driving component and a retractable rain-collecting plate. On the one hand, the rain-collecting area of ​​the rain-collecting plate can be adjusted according to the needs of the rain-enhancing experimental area or the amount of rain (for example, the rain-enhancing experimental area needs to increase rainfall by 50% on the basis of natural rainfall, so the rain-collecting area of ​​the rain-collecting plate is shrunk to half of the maximum rain-collecting area. At this time, the rainfall in the rain-enhancing area is increased by 50%, while the rainfall in the rain-reducing area is reduced by 50%), which is convenient for simulating the increase and decrease of rainfall. On the other hand, the rain-collecting plate can be shrunk to the minimum on sunny days, which can effectively prevent the rain-collecting plate from blocking sunlight. At the same time, it can also reduce the high temperature under the rain-collecting plate in summer, which affects the experimental results.

[0024] Third, the present invention provides an anti-clogging component. On the one hand, as the scraper moves up and down, it can intermittently clean the filter screen. On the other hand, it can buffer rainwater when it rains heavily, reducing the impact of too much rain on the water storage barrel; by providing a water guide cylinder, it can receive rainwater in the filter barrel and guide it into the drainage pipe; by providing a driving cylinder, a water inlet and a seepage pipe, it can not only drive the sealing plug to move downward, but also discharge rainwater from the seepage pipe. When it rains, rainwater enters the driving cylinder from the water inlet, the sealing plug moves downward, and the scraper moves downward. When the rain stops or the rainfall is very small, the amount of rainwater entering the driving cylinder is less than the amount discharged by the seepage pipe. After the rainwater is discharged, the sealing plug moves upward under the action of the second spring, and at this time the scraper also moves upward, so that impurities on the filter screen are removed in time. At the same time, by providing the seepage pipe, it can also prevent rainwater from remaining in the driving cylinder.

[0025] Fourth, the present invention realizes drainage of rainwater to the bottom of the partition plate by setting a partition plate and two water inlet pipes. This arrangement can reduce the entry of impurities above the partition plate and further reduce blockage; by setting a slag cleaning port and a cover body, regular cleaning of impurities in the filter barrel is achieved.

[0026] Fifth, the present invention reduces the impact of the V-shaped plate on the field microclimate during rainless periods, automatically adjusts the collected precipitation in real time to increase or decrease the amount of rainfall, and handles the situation of small or intermittent precipitation without energy consumption, thereby improving the precision and intelligence level of the canopy device, thereby realizing precise control and real-time regulation of in-situ precipitation experiments, and has the advantages of high accuracy, small error and strong control.

[0027] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a canopy based on an in-situ precipitation control experiment according to one of the technical solutions of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a water storage barrel according to one of the technical solutions of the present invention;

[0030] Figure 3 A schematic diagram of the structure of a fixing plate according to one of the technical solutions of the present invention;

[0031] Figure 4 This is a schematic structural diagram of an anti-blocking component described in one of the technical solutions of the present invention;

[0032] Figure 5This is a structural schematic diagram of a filter barrel according to one of the technical solutions described in the present invention;

[0033] Figure 6 This is a schematic structural diagram of a water retaining plate described in one of the technical solutions of the present invention. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0035] like Figure 1-5 As shown, the present invention provides a canopy based on an in-situ precipitation control experiment, comprising:

[0036] A rainwater collection mechanism, which is used to collect rainwater above the rainfall reduction experimental area;

[0037] A rain storage mechanism, comprising a water storage barrel 12 connected to the rain collection mechanism, wherein a water suction pump and a bracket are arranged in the water storage barrel 12, and a rotatable water tipping bucket 15 is arranged on the bracket, wherein the water tipping bucket 15 is used to receive the water discharged by the rain collection mechanism and pour the water into the water storage barrel 12 to adjust the opening and closing of the water suction pump;

[0038] The simulated rainfall mechanism is connected to the water outlet of the water suction pump, and is used to spray rainwater to the rainfall enhancement experimental area (the rainfall enhancement experimental area can also have natural rainfall at the same time).

[0039] In this technical solution, the areas of the rainfall reduction experimental area and the rainfall increase experimental area are equal. A water level sensor 45 is provided in the water storage barrel 12. The water level sensor 45 is an instrument that converts water level parameters into corresponding electrical signals in real time. The water level sensor 45 can monitor the changes in water level in real time and convert such changes into electrical signals and output them to the control system. When the water level reaches or exceeds the preset water level, the control system will issue a command to the water suction pump to start working. When the water level is lower than the preset water level, the control system will issue a command to the water suction pump to suspend working. The water level can be adjusted and controlled automatically; the water pump can be powered by the solar panel 1; the water bucket 15 is an inverted hollow quadrangular pyramid structure with unequal sides; the capacity of the water storage barrel 12 is designed according to the experimental requirements to ensure that sufficient rainwater can be stored for subsequent use; the water inlet of the water bucket 15 faces upward to receive rainwater flowing in from the rainwater collecting mechanism; when the amount of water in the water bucket 15 reaches a certain level (the center of gravity of the water bucket 15 is offset to make the water bucket 15 lose balance), the water bucket 15 will automatically The water is turned over and poured into the water storage barrel 12. After the rainwater in the water bucket is poured out, the weight of the water bucket 15 is reduced and the center of gravity returns to the initial state, that is, the water bucket returns to the state of receiving water. In order to avoid that the rainwater does not reach the weight to turn the water bucket 15 after the rain stops, and remains in the water bucket 15 and affects the experimental results, after the rain stops, the staff will observe whether there is water in the water bucket 15. If there is water, the water will be poured into the water storage barrel 12; the simulated rainfall mechanism is used to spray the water in the water storage barrel 12 to the rainfall increase experimental area; the rain collecting mechanism, the rain storing mechanism, the simulated rainfall mechanism, the simulated rainfall mechanism The rain mechanism is used for effectively collecting, storing and utilizing rainwater; the simulated rainfall mechanism is used for spraying rainwater pumped out by the water suction pump in the form of mist or drizzle to simulate the natural precipitation process; a clean water pipe is provided at the top of the water storage barrel 12, and the clean water pipe flushes water toward the water tipping bucket; a drain pipe is connected to the bottom of the water storage barrel, and a valve is provided on the drain pipe. When it is necessary to flush the water storage barrel, water is added to the water tipping bucket through the clean water pipe and discharged from the drain pipe to flush the water storage barrel; an inspection port is provided on the side wall of the water storage barrel, and an openable and closable cover is provided at the inspection port.

[0040] During use, rainwater above the rain reduction experimental area enters the water bucket 15 of the water storage barrel 12 through the rain collecting mechanism. When the water bucket 15 is full of water, the water bucket 15 flips over under the action of the gravity of the water, and the water in the water bucket 15 enters the water storage barrel 12. When the water level is higher than the preset water level, the water suction pump starts working and transmits the rainwater to the simulated rainfall mechanism. The simulated rainfall mechanism sprays the rainwater to the rain increase experimental area to complete the rain increase in the rain increase experimental area. When the water level in the water storage barrel 12 is lower than the preset water level, the water suction pump stops working.

[0041] By adopting this technical solution, the present invention sets a water bucket 15. When the water in the water bucket 15 reaches a certain amount, the water can enter the water storage barrel 12. This setting can effectively avoid the water suction pump being always started and closed multiple times when the precipitation is small or intermittent, effectively reducing energy consumption and extending the service life of the water suction pump.

[0042] In another technical solution, a water guide platform 47 is provided at the bottom of the water storage barrel 12, and the top surface of the water guide platform 47 is recessed downward to form a rain collecting trough 48. The water inlet end of the water suction pump is connected to the lower end of the rain collecting trough 48. A plurality of water guide plates 44 are arranged at intervals on the water guide platform 47, and the water guide plates 44 are all provided with water guide ports, wherein the water guide plates 44 are located between the water outlet end of the water tipping bucket 15 and the rain collecting trough 48, and the water guide ports are successively enlarged in a direction away from the rain collecting trough 48. A water level sensor 45 is arranged in the rain collecting trough 48, and rainwater in the water tipping bucket 15 passes through a plurality of water guide plates 44 in sequence and flows into the rain collecting trough 48. By adopting this technical solution, the present invention sets a rain collecting trough 48 to facilitate the water suction pump to suck away rainwater in the water storage barrel 15. By setting a water guide plate 44, the formation of waves by rainwater near the water level sensor 45 can be reduced, which may cause large water surface fluctuations (affecting the detection of the water level sensor 45), thereby improving the detection accuracy of the water level sensor 45.

[0043] In another technical solution, the rain collecting mechanism includes a support frame arranged above the rain reduction experimental area (the support frame includes four columns 2, and the four columns 2 are provided with longitudinal beams 35 and cross beams 4. The plane formed by the longitudinal beams 35 and the cross beams 4 is an inclined plane. One of the cross beams 4 is located at the high end and the other is located at the low end. The high end of the rain collecting plate 3 is arranged on the cross beam 4 located at a high place. A second isolation plate 46 is circumferentially provided at the lower part of the support frame. 1 / 4 of the height of the second isolation plate 46 is located on the upper part of the soil surface, and the remaining part is buried in the soil to reduce the influence of moisture migration. In use, in order to reduce the influence of wind, plastic cloth can be arranged circumferentially on the support frame to serve as a wind and rain shield when it rains, and the plastic cloth can be removed after the rain stops), a plurality of retractable rain collecting plates 3 arranged at intervals on the support frame, and a driving component for driving the plurality of rain collecting plates 3 to retract (the driving component can be specifically driven by manpower or a rotating motor can be arranged on the support frame to drive the collecting plate 3 to retract). The rain collecting plate 3 is V-shaped and the upper end of one side of the rain collecting plate 3 is hinged to the support frame, and the other side can slide on the support frame to adjust the angle of the rain collecting plate 3 to adjust the angle of the rain collecting plate to achieve the adjustment of the rain collecting area of ​​the rain collecting plate. The rain collecting plate 3 is tilted, and the support frame is provided with a water collecting trough 5 at a position below the lower end of the rain collecting plate 3 to receive rainwater on multiple rain collecting plates 3. The water collecting trough 5 is tilted, and the water outlet end of the water collecting trough 5 is connected with a drain pipe 6, which extends into the water storage barrel 12 and is located above the water tipping bucket 15 to guide water into the water tipping bucket 15. When all the rain collecting plates 3 are unfolded to the maximum angle, adjacent rain collecting plates 3 contact in turn to form the maximum rain collecting area covering the rain reduction experimental area. When it is necessary to reduce the rain collecting area, the angle of the rain collecting plate 3 is adjusted. At this time, any two adjacent rain collecting plates 3 do not contact. By adopting this technical solution, the present invention sets a driving component and a retractable rain collecting plate 3. On the one hand, it can adjust the rain collecting area of ​​the rain collecting plate 3 according to the needs of the rain increasing experimental area or the amount of rain (for example, the rain increasing experimental area needs to increase the rainfall by 50% on the basis of natural rainfall, then the rain collecting area of ​​the rain collecting plate is shrunk to one half of the maximum rain collecting area, at this time the rain increasing area realizes a 50% increase in rainfall, while the rain reducing area realizes a 50% reduction in rainfall), so as to simulate the increase and decrease of rainfall. On the other hand, the rain collecting plate 3 can be shrunk to the minimum on sunny days, which can effectively prevent the rain collecting plate 3 from blocking the sunlight. At the same time, it can also reduce the high temperature under the rain collecting plate 3 in summer, which affects the experimental results and improves the accuracy of the experiment.

[0044] In another technical solution, a rotating motor is provided at both the high end and the low end of the support frame (the telescopic direction of the rotating motor is the horizontal direction), the output shaft of the rotating motor is connected to a screw rod, and a plurality of movable sliding seats are provided on the screw rod at intervals (the rotation of the screw rod drives the sliding seats to move), and the plurality of sliding seats on the same screw rod are rotationally connected to the slidable edges (ends) of the plurality of rain collecting plates 3 in a one-to-one correspondence, so that the rotation of the screw rod drives the rain collecting plates to slide. By adopting this technical solution, the rain collecting plates 3 are slidably connected to the support.

[0045] In another technical solution, a plurality of U-shaped fixing plates 9 are arranged at intervals along the inclined direction of the rain collecting plate 3 on the support frame (the two vertical sides of the fixing plate 9 are respectively connected to the two longitudinal beams 35), the two vertical sides of the fixing plate 9 are connected to the support frame, the rain collecting plate 3 is located above the horizontal side of the fixing plate 9 (the fixing plate 9 is parallel to the rain collecting plate 3), and a plurality of first springs 10 are arranged at intervals along the length direction of the horizontal side of the fixing plate 9, and the top ends of the plurality of first springs 10 are connected to a supporting plate 11 in common, the supporting plate 11 contacts the rain collecting plate 3 to support the rain collecting plate 3, and the first springs 10 are in a compressed state. With this technical solution, the present invention realizes the supporting effect on the rain collecting plate 3 by arranging the fixing plate 9 and the first spring 10.

[0046] In another technical solution, a rain grate is provided in the water collecting tank 5. This technical solution is adopted to achieve preliminary filtration of rainwater.

[0047] In another technical solution, the simulated rainfall mechanism includes a fixed frame 7 arranged above the rain reduction experimental area, a shunt pipe arranged at the top of the fixed frame 7, the shunt pipe is connected to the water outlet of the water suction pump, and a plurality of sprinklers 8 are arranged at intervals on the shunt pipe. In order to reduce the influence of wind during use, a plastic sheet can be arranged around the fixed frame to block wind and rain when it rains, and the plastic sheet can be removed after the rain stops. With this technical solution, the water in the water storage barrel 12 can be sprayed out.

[0048] In another technical solution, a first isolation plate 40 is provided around the lower part of the fixing frame 7, 1 / 4 of the first isolation plate 40 is located on the upper part of the soil surface, and the rest is buried in the soil. With this technical solution, by providing the first isolation plate 40, the water migration between the rainwater in the first isolation plate 40 and the land outside the first isolation plate 40 is reduced, thereby improving the accuracy of the experimental results.

[0049] In another technical solution, the bracket includes two rotating shafts 41 rotatably connected to the inner wall of the water storage bucket 12, the two rotating shafts 41 are fixedly connected to the water tipping bucket 15 to support the water tipping bucket 15, the rotating shaft 41 is provided with a baffle 42, the inner wall of the water storage bucket 12 is provided with two baffles 43, the two baffles 43 are arranged one-to-one with the two baffles 42, the baffles 43 are provided with a pressure sensor, a controller connected to the pressure sensor, and a counter connected to the controller to count the number of times the water tipping bucket flips, when the water tipping bucket flips, the baffle 42 squeezes the pressure sensor, the pressure sensor collects a pressure change signal, and transmits the pressure change signal to the controller, the controller receives the signal, and sends a counting instruction to the counter, and the counter counts. With this technical solution, the present invention realizes the limit of the water tipping bucket by setting the baffle 43 and the baffle 42, and realizes the counting of the number of times the water tipping bucket 15 flips by setting the pressure sensor, the controller, and the counter.

[0050] In another technical solution, the water outlet end of the water collecting tank 5 is connected with a connecting pipe, a filter barrel 16 is provided below the connecting pipe, an annular opening is provided at the upper part of the side wall of the filter barrel 16, an annular filter screen 17 is clamped in the opening, wherein the filter barrel 16 is coaxially provided with a water guide cylinder 18 in the circumferential direction, the water guide cylinder 18 is used to receive rainwater filtered by the filter screen 17, a plurality of conduits 24 are connected at intervals at the bottom end of the water guide cylinder 18, and the lower ends of the conduits 24 are all connected to the drain pipe 6, and are connected to the drain pipe 6;

[0051] An anti-clogging component (the anti-clogging component can be arranged on a stabilizing frame to provide stability) includes a driving cylinder 25 (the driving cylinder 25 is arranged vertically) arranged on the outer side of the bottom end of the filter barrel 16, and a second spring 27 is arranged on the inner side of the bottom end of the driving cylinder 25 (the extension direction of the second spring 27 is the vertical direction), and a sealing plug 28 is arranged at the end of the second spring 27, which can be sealed and slid up and down relative to the driving cylinder 25, and a driving rod 19 is arranged on the sealing plug 28 (the driving rod 19 is coaxially arranged with the driving cylinder 25), and the driving rod 19 seals and slides through the bottom end of the filter barrel 16 and extends into the filter barrel 16, and a pair of connecting rods 22 are horizontally arranged at the end of the driving rod 19, and the pair of connecting rods 22 are commonly connected to an annular scraper 23, and the scraper The surface of the plate 23 facing the side wall of the filter barrel 16 is covered with a brush, and the brush is in contact with the filter screen 17, wherein the upper part of the driving cylinder 25 is provided with a water inlet 29, and the water inlet 29 is connected with the bottom end of the water guide cylinder 18 to allow rainwater to enter the driving cylinder 25 and drive the sealing plug 28 to move downward, and the driving cylinder 25 is provided with a seepage pipe 26 (the diameter of the seepage pipe 26 is smaller than the diameter of the water inlet 29, that is, the speed at which rainwater enters the driving cylinder 25 is greater than the speed at which rainwater is discharged from the seepage pipe 26, and a section of sponge can be filled in the seepage pipe 26 to slow down the drainage speed), the bottom end of the seepage pipe 26 is connected with the drainage pipe 6, and the seepage pipe 26 is located between the highest position and the lowest position of the sealing plug 28;

[0052] Among them, when the sealing plug 28 moves to the highest position under the elastic action of the second spring 27, the scraper 23 is located above the filter screen 17; when the sealing plug 28 moves to the lowest position under the action of rainwater, the scraper 23 is located below the filter screen 17, and the brush cleans the filter screen 17 under the action of rainwater; when the rainwater becomes less or stops raining, the water in the driving cylinder 25 is discharged from the seepage pipe 26; due to the reduction of water in the driving cylinder 25, the second spring 27 drives the sealing plug 28 to move upward until the sealing plug 28 moves to the highest position, at which time the filter screen 17 is cleaned again, and so on (to ensure the accuracy of the experiment, water flush with the lowest end of the opening can be stored in the filter barrel 16). By adopting this technical solution, the present invention sets an anti-blocking component. On the one hand, as the scraper 23 moves up and down, the filter screen 17 can be intermittently cleared. On the other hand, it can buffer rainwater when it rains heavily, reducing the impact of too much rain on the water storage barrel 12. By setting a water guide cylinder 18, the rainwater in the filter barrel 16 can be received and guided into the drainage pipe 6. By setting a driving cylinder 25, a water inlet 29 and a seepage pipe 26, it can not only drive the sealing plug 28 to move downward, but also the rainwater can The rainwater is discharged from the seepage pipe 26. When it rains, rainwater enters the driving cylinder 25 from the water inlet 29, the sealing plug 28 moves downward, and the scraper 23 moves downward. When the rain stops or the rainfall is very small, the amount of rainwater entering the driving cylinder 25 is less than the amount discharged from the seepage pipe 26. After the rainwater is discharged, the sealing plug 28 moves upward under the action of the second spring 27. At this time, the scraper 23 also moves upward, so that impurities on the filter screen 17 are removed in time. At the same time, by setting the seepage pipe 26, rainwater can be prevented from remaining in the driving cylinder 25.

[0053] In another technical solution, a partition plate 20 is horizontally provided at the part of the filter barrel 16 below the filter screen 17, the driving rod 19 slides through the partition plate 20, a plurality of water inlets 21 are provided on the partition plate 44 (the water inlets 21 are arranged at equal intervals), the lower end of the connecting pipe is connected with two water inlet pipes 30, both of which pass through the partition plate 20 and extend under the partition plate 20, a slag cleaning port is provided on the partition plate 20, and a cover body that can be opened and closed is provided at the slag cleaning port. With this technical solution, the present invention realizes the drainage of rainwater to the bottom of the partition plate 20 by providing a partition plate 44 and two water inlet pipes 30. This arrangement can reduce the entry of impurities into the top of the partition plate 20 and further reduce blockage; by providing a slag cleaning port and a cover body, regular cleaning of impurities in the filter barrel 16 can be achieved.

[0054] In another technical solution, Figure 6As shown, water baffles 48 are arranged around the top of the support frame, and four water baffles 48 are connected in sequence. By adopting this technical solution, the present invention can effectively reduce the splashing of rainwater on the rain collecting plate 13 by arranging the water baffles 48, thereby improving the accuracy of the experiment.

[0055] The present invention selects a typical plot in the research area as a rain reduction experimental area and arranges a rain collecting mechanism, wherein the rain collecting plates in the rain collecting mechanism are inclined in the upwind direction of the southeast wind prevailing in summer, so as to minimize the influence of wind on the experiment during rainfall;

[0056] When there is no rain, the rain collecting plate is driven to be in a folded state by the first telescopic motor to minimize the impact of the rain collecting plate on the microclimate of the field rain reduction experimental area;

[0057] When it rains, the rain collecting plate is driven by the first telescopic motor to be unfolded to the receiving area of ​​the pre-controlled rainfall to collect rainwater. For example, when the rain increase experimental area needs to increase the rainwater by 100%, the rain collecting plate is unfolded to the maximum rain collecting area. When the rain increase experimental area needs to increase the rainwater by 50%, the rain shield is retracted to 1 / 2. After the water bucket in the rain storage mechanism is filled with a bucket of water, the rainwater is poured into the water collection barrel due to gravity. When the water level sensor 45 detects that the water level is higher than the minimum water level, the water suction pump works and is sprayed into the water increase treatment plot in real time through the precipitation device.

[0058] When the precipitation is over, clean the dirt and other impurities in the water collection tank to ensure that the water storage tank is clean and dry, regularly check the accuracy of the water level sensor 45, and perform frequent maintenance.

[0059] The number of equipment and processing scales described here are used to simplify the description of the present invention. The application, modification and variation of the rain canopy based on in-situ precipitation control experiment of the present invention will be obvious to those skilled in the art.

[0060] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A canopy based on an in-situ precipitation control experiment, characterized in that: include: A rainwater collection mechanism, which is used to collect rainwater above the rainfall reduction experimental area; A rain storage mechanism, comprising a water storage barrel connected to the rain collection mechanism, wherein a water suction pump and a bracket are arranged in the water storage barrel, and a rotatable water tipping bucket is arranged on the bracket, wherein the water tipping bucket is used to receive the water discharged by the rain collection mechanism and pour the water into the water storage barrel to adjust the opening and closing of the water suction pump; The simulated rainfall mechanism is connected to the water outlet of the water suction pump, and is used for spraying rainwater to the rainfall enhancement experimental area.

2. The canopy based on the in-situ precipitation control experiment as claimed in claim 1, characterized in that: A water guide platform is provided at the bottom of the water storage barrel, and the top surface of the water guide platform is recessed downward to form a water collecting trough. The water inlet end of the water suction pump is connected to the lower end of the water collecting trough. A plurality of water guide plates are arranged on the water guide platform at intervals, and each of the water guide plates is provided with a water guide port, wherein the water guide plate is located between the water outlet end of the water bucket and the water collecting trough, and the water guide port increases successively in the direction away from the water collecting trough.

3. The canopy based on the in-situ precipitation control experiment as claimed in claim 1, characterized in that: The rain collecting mechanism includes a support frame arranged above the rain reduction experimental area, a plurality of retractable rain collecting plates arranged at intervals on the support frame, and a driving assembly for driving the plurality of rain collecting plates to retract and extend. The rain collecting plate is V-shaped and one side of the rain collecting plate is hinged to the support frame, and the other side can slide on the support frame to adjust the rain collecting area of ​​the rain collecting plate by adjusting the angle of the rain collecting plate. The rain collecting plate is arranged at an angle, and the support frame is provided with a water collecting trough at the lower end of the rain collecting plate to receive rainwater from the plurality of rain collecting plates. The water collecting trough is arranged at an angle, and the water outlet end of the water collecting trough is connected to a drain pipe, which extends into the water storage barrel and is located above the water tipping bucket to guide water into the water tipping bucket.

4. The canopy based on the in-situ precipitation control experiment as claimed in claim 3, characterized in that: A rotating motor is provided at the high end and the low end of the support frame, the output shaft of the rotating motor is connected to a screw rod, a plurality of movable sliding seats are arranged at intervals on the screw rod, and the plurality of sliding seats on the same screw rod are connected one by one with the sliding edges of a plurality of rain collecting plates, so that the rain collecting plates can be driven to slide by the rotation of the screw rod.

5. The canopy based on the in-situ precipitation control experiment as claimed in claim 4, characterized in that: A plurality of U-shaped fixing plates are arranged on the support frame at intervals along the inclined direction of the rain collecting plate, two vertical sides of the fixing plate are connected to the support frame, the rain collecting plate is located above the horizontal side of the fixing plate, a plurality of first springs are arranged on the horizontal side of the fixing plate at intervals along its length direction, the top ends of the plurality of first springs are commonly connected to a support plate, and the support plate is in contact with the rain collecting plate to support the rain collecting plate.

6. The canopy based on the in-situ precipitation control experiment as claimed in claim 5, characterized in that: The simulated rainfall mechanism comprises a fixed frame arranged above the rainfall enhancement experimental area, a shunt pipe arranged at the top of the fixed frame, the shunt pipe is communicated with the water outlet end of the water suction pump, and a plurality of sprinklers are arranged at intervals on the shunt pipe.

7. The canopy based on the in-situ precipitation control experiment as claimed in claim 6, characterized in that: A first isolation plate is circumferentially provided at the lower part of the fixing frame.

8. The canopy based on the in-situ precipitation control experiment as claimed in claim 2, characterized in that: The bracket includes two rotating shafts rotatably connected to the inner wall of the water storage barrel, the two rotating shafts are fixedly connected to the water tipping bucket to support the water tipping bucket, a baffle is provided on the rotating shaft, and two blocks are provided on the inner wall of the water storage barrel. The two blocks are arranged in a one-to-one correspondence with the two baffles, and a pressure sensor, a controller connected to the pressure sensor, and a counter connected to the controller are provided on the block to count the number of times the water tipping bucket flips.

9. The canopy based on the in-situ precipitation control experiment as claimed in claim 3, characterized in that: The water outlet of the water collecting tank is connected with a connecting pipe, a filter barrel is arranged below the connecting pipe, an annular opening is arranged on the upper part of the side wall of the filter barrel, an annular filter net is arranged in the opening, wherein a water guide cylinder is arranged coaxially in the circumferential direction of the filter barrel, and the bottom end of the water guide cylinder is connected with the drainage pipe; The anti-clogging component comprises a driving cylinder arranged on the outer side of the bottom end of the filter barrel, a second spring is arranged on the inner side of the bottom end of the driving cylinder, a sealing plug is arranged at the end of the second spring and can slide up and down sealingly relative to the driving cylinder, a driving rod is arranged on the sealing plug, the driving rod seals and slides through the bottom end of the filter barrel and extends into the filter barrel, a pair of connecting rods are horizontally arranged at the end of the driving rod, the pair of connecting rods are commonly connected with an annular scraper, the surface of the scraper facing the side wall of the filter barrel is covered with a brush, the brush contacts the filter screen, wherein a water inlet is arranged on the upper part of the driving cylinder, the water inlet is connected with the bottom end of the water guide cylinder to allow rainwater to enter the driving cylinder and drive the sealing plug to move downward, a water seepage pipe is arranged on the driving cylinder, the bottom end of the water seepage pipe is connected with the drain pipe, and the water seepage pipe is located between the highest position and the lowest position of the sealing plug; When the sealing plug moves to the highest position under the elastic action of the second spring, the scraper is located above the filter net; when the sealing plug moves to the lowest position under the action of rainwater, the scraper is located below the filter net.

10. The canopy based on the in-situ precipitation control experiment according to claim 9, characterized in that: The part of the filter barrel below the filter screen is horizontally provided with a partition plate, the drive rod slides through the partition plate, a plurality of water outlets are provided on the partition plate, the lower end of the connecting pipe is connected to two water inlet pipes, both of which pass through the partition plate and extend under the partition plate, a slag cleaning port is provided on the partition plate, and an openable and closable cover is provided at the slag cleaning port.

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