Increasing and decreasing experimental equipment for simulating seasonal rainfall change

Abstract

The invention discloses increase and decrease experimental equipment for simulating seasonal rainfall changes, and relates to the technical field of hydrology, and the increase and decrease experimental equipment for simulating seasonal rainfall changes comprises a stable supporting bottom plate which is used for stably placing the experimental equipment. According to the increase and decrease experimental equipment for simulating seasonal rainfall changes, during an experiment, rainfall change parameters and environmental condition parameters are set on an operation interface of a data processing and control system according to experimental purposes and research requirements; the system converts the parameters into control instructions and sends the control instructions to rainfall simulation equipment, so that a water pump conveys water in a water storage tank into a spray head, rainfall processes of different intensities are simulated through spraying of the spray head, sprayed raindrops fall into a flow guide assembly and a collection assembly, the flow guide assembly enables the sprayed raindrops to flow towards the position of a detection assembly, and rainfall simulation is achieved. Rainwater drops on the surface of the detection assembly to generate mechanical impact force or pressure on the sensor so as to monitor the rainfall intensity.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hydrology, in particular to a kind of simulation seasonal precipitation variation increase and decrease experimental equipment. BACKGROUND

[0002] In many scientific fields such as ecological environment research, agricultural meteorology and hydrogeology, it is crucial to explore the impact of seasonal precipitation variation on ecological systems, crop growth and geological structures. However, seasonal precipitation in natural environments is influenced by various complex factors, making it difficult to precisely control variables and limiting the accuracy and reliability of research results. The increase and decrease experiment of seasonal precipitation variation adjusts parameters such as frequency, intensity and duration of precipitation through controlled experiments to simulate different seasonal precipitation variations. This experimental method is mainly used to study the response of ecological systems to seasonal precipitation variation.

[0003] Through these experiments, researchers can better understand the response of ecological system structure and function to seasonal precipitation variation. For example, rain reduction experiments can help understand how environmental factors such as soil moisture and temperature affect water balance and productivity of ecological systems. These research results are of great significance for assessing the impact of climate change on ecological systems and providing scientific basis for developing adaptive management strategies.

[0004] Currently, the existing simulation seasonal precipitation variation increase and decrease experimental equipment is not convenient for recycling and utilization of rainwater when simulating rainfall through spray head, resulting in waste of water resources. SUMMARY

[0005] To achieve the above purpose, the present application realizes the technical scheme as follows: To achieve the above purpose, the present application realizes the technical scheme as follows: a kind of simulation seasonal precipitation variation increase and decrease experimental equipment, comprising: stable bottom plate, the stable bottom plate is used for experimental equipment stable placement, the edge side of the top of the stable bottom plate is fixedly installed with support frame, the inside of the stable bottom plate is fixedly installed with inner interface plate in the middle, the shaft center of the inner interface plate is provided with discharge port; Collecting assembly, the collecting assembly is used for rainfall aggregation detection, the collecting assembly is fixedly installed in the middle of the top of inner interface plate, and the collecting assembly is communicated with discharge port; Flow guide assembly, the flow guide assembly is used for precipitation detection guidance and drainage, the flow guide assembly is fixedly installed on the top of support frame, the flow guide assembly is erected above the stable bottom plate through support frame, and the upper portion of the collecting assembly is provided with spray head through water storage tank; The detection assembly is used for rainfall intensity monitoring, is fixedly installed on the top of the collecting assembly, is arranged on the same central axis as the flow guide assembly, and is fixedly connected with the bottom of the flow guide assembly. When the experiment is carried out, first, according to the experimental purpose and research requirements, the precipitation change parameters and the environmental condition parameters are set on the operation interface of the data processing and control system. The system converts these parameters into control instructions and sends them to the precipitation simulation equipment, so that the water pump transports the water in the water storage tank to the spray head, sprays the simulated rainfall process of different intensities through the spray head, and the sprayed raindrops fall into the flow guide assembly and the collecting assembly. The flow guide assembly makes the sprayed raindrops flow to the position of the detection assembly, and the raindrops fall on the surface of the detection assembly to generate mechanical impact force or pressure on the sensor, so as to monitor the rainfall intensity.

[0006] Preferably, the flow guide assembly comprises a top frame, a fixed ring is fixedly installed in the inside of the top frame, and an inclined support plate is fixedly installed on the bottom of the fixed ring and the top frame. A collecting hopper is fixedly installed on the top of the top frame, and a flow guide cover group is fixedly installed in the inside of the fixed ring. When the spray head sprays the simulated rainfall process of different intensities, the raindrops sprayed into the collecting hopper are transported to the position of the detection assembly along the flow guide cover group. The inner wall of the collecting hopper is inclined, the sprayed raindrops slide down along the inner wall of the collecting hopper, the raindrop collection effect is achieved by using the gravity of the raindrops, the automatic water guiding effect is achieved, and then the raindrops flow down along the flow guide cover group to the surface of the detection assembly to detect the rainfall intensity.

[0007] Preferably, the top frame is fixedly installed on the top of the support frame, a plurality of inclined support plates are arranged, the plurality of inclined support plates are distributed in a circumferential shape on the outer surface of the detection assembly, and the flow guide cover group is fixedly installed above the detection assembly through the fixed ring.

[0008] Preferably, the flow guide cover group comprises a ring pad, a filter cover is fixedly installed on the top of the ring pad, a connecting piece and a segmented flow guide strip are fixedly installed on the bottom of the ring pad, the connecting piece is fixedly installed on the bottom of the fixed ring, the connecting piece is provided with three, and the three connecting pieces are uniformly distributed on the outer side of the segmented flow guide strip. After the raindrops are collected in the collecting hopper, the raindrops flow down along the groove on the surface of the filter cover, the filter cover separates the impurities in the sprayed raindrops, so as to prevent the sprayed raindrops from carrying impurities to cause abrasion of the detection assembly, achieve the isolation and protection effect of the detection assembly, reduce the contact between the detection assembly and the outside world, prevent the data from being disturbed during detection, the segmented flow guide strip installed at the bottom of the ring pad divides the flow of the raindrops, so that the raindrops fall on the detection assembly from multiple directions, and the impact force of the raindrop flow is changed according to the sprayed rainfall, so as to facilitate the rainfall measurement.

[0009] Preferably, the detection assembly comprises a positioning seat fixedly installed at the top of the collection assembly, a circular groove is formed in the middle of the top of the positioning seat, a piezoelectric rain sensor is fixedly installed in the circular groove, an installation groove is formed in the outer surface of the positioning seat, and the installation groove is fixedly connected with the inclined supporting plate. By simulating the rainfall change rule of different regions and different seasons, when the raindrops of different rainfall fall on the rain-sensitive surface along the segmented flow guide strip, the raindrops generate mechanical impact force or pressure on the sensor, when the raindrops impact the surface of the sensor, a small mechanical vibration is generated, the piezoelectric material deforms and generates an electric signal, and the electric signal is transmitted to the processor to record and analyze the rainfall.

[0010] Preferably, the piezoelectric rain sensor comprises a shell, a ceramic sheet is fixedly installed at the top of the shell, and an expansion vertical rod is fixedly installed at the side of the top of the ceramic sheet; three expansion vertical rods are arranged, and a rain-sensitive surface is fixedly installed at the top of the three expansion vertical rods. The surface of the rain-sensitive surface is arranged as a circular arc surface, and after the raindrops fall on the rain-sensitive surface along the segmented flow guide strip, the raindrops can quickly slide off the rain-sensitive surface, thereby avoiding the rainwater from adhering to the rain-sensitive surface to affect the detection accuracy.

[0011] Preferably, the shell is fixedly installed in the circular groove, a piezoelectric element is fixedly installed in the shell, the piezoelectric element is electrically connected with the rain-sensitive surface, and the rain-sensitive surface is arranged below the flow cover group.

[0012] Preferably, the collection assembly comprises a conduit, a drainage port is formed in the inside of the conduit, the drainage port is circumferentially arranged on the surface of the conduit, an inclined guide disc is sleeved on the outer surface of the conduit, the inclined guide disc is in communication with the drainage port, a connecting pipe is fixedly installed at the bottom of the conduit, and an anti-blocking guide element is fixedly installed in the inside of the connecting pipe away from the conduit. Since the nozzle sprays above the experimental equipment, after the rainwater sprays on the surface of the piezoelectric rain sensor along the flow cover group, the raindrops drop downward into the inclined guide disc, and flow into the connecting pipe along the drainage port formed on the surface of the inclined guide disc; in the process of dropping downward, the anti-blocking guide element guides the rainwater, so as to facilitate the rainwater to be transported to the direction of the discharge port, the discharge port is in communication with the experimental field through the irrigation pipeline, a plurality of experimental equipment is installed by the staff, a plurality of rainfall levels are set for comparison experiments, and the collected rainwater is used for irrigation of the experimental field during the simulation rainfall experiment, so as to facilitate the staff to explore the influence of the increase and decrease of the rainfall on the plant growth process.

[0013] Preferably, the connecting pipe is fixedly installed in the middle of the top of the inner connecting plate, the conduit is fixedly installed at the bottom of the positioning seat, and the anti-blocking guide element is fixedly connected with the stable supporting bottom plate.

[0014] Preferably, the anti-blocking guide comprises a guide ring, the top of the guide ring is fixedly provided with an inner inclined ring, and the outer surface of the guide ring is fixedly provided with a side support frame extending to the surface of the stabilizing bottom plate through the connecting pipe.

[0015] The application provides a simulation seasonal rainfall change increasing and decreasing experiment device. I. The simulation seasonal rainfall change increasing and decreasing experiment device sprays simulated rainfall of different intensities through the spray head, and the raindrops are sprayed into the collecting hopper and transported to the position of the detection assembly along the guide cover group. The inner wall of the collecting hopper is inclined, the sprayed raindrops slide down along the inner wall of the collecting hopper, the raindrop collection effect is achieved by using the gravity of the raindrops, and the automatic water guiding effect is achieved. Then, the raindrops flow downward along the guide cover group to the surface of the detection assembly to detect the rainfall intensity.

[0016] II. After the raindrops are collected in the collecting hopper, the raindrops flow downward along the groove on the surface of the filter cover, the filter cover separates the impurities in the sprayed raindrops, prevents the sprayed raindrops from carrying impurities to cause abrasion of the detection assembly, achieves the isolation and protection effect of the detection assembly, reduces the contact of the detection assembly with the outside world, prevents the data from being disturbed during detection, the segmented guide strips at the bottom of the ring pad divide the raindrops when flowing, the raindrops fall on the detection assembly from multiple directions, the impact force of the raindrop flow is changed according to the sprayed rainfall, and the rainfall measurement is facilitated.

[0017] III. The simulation seasonal rainfall change increasing and decreasing experiment device simulates the rainfall change law of different regions and different seasons through the spray head. When the raindrops of different rainfall fall on the rain-sensitive surface along the segmented guide strips, the raindrops generate mechanical impact force or pressure on the sensor. When the raindrops impact the surface of the sensor, a small mechanical vibration is generated, the piezoelectric material deforms and generates an electric signal, the electric signal is transmitted to the processor to record and analyze the rainfall.

[0018] IV. The simulation seasonal rainfall change increasing and decreasing experiment device sets the surface of the rain-sensitive surface as a circular arc surface. After the raindrops fall on the rain-sensitive surface along the segmented guide strips, the raindrops can quickly slide off the rain-sensitive surface, so that the rainwater is prevented from adhering to the rain-sensitive surface and affecting the detection accuracy.

[0019] Five, the simulation seasonal precipitation change increase and decrease experiment equipment, through the nozzle sprays in the upper of the experiment equipment, rainwater sprays in the piezoelectric rain sensor surface along the fairing group, raindrop drops to the inclined guide disc, and flows to the connecting pipe along the inclined guide disc surface opening drainage port, raindrop in the process of dropping to prevent the blocking guide piece to rainwater diversion, in order to rainwater to the direction of the drain port conveying, drain port through the irrigation pipeline and experimental field is connected, the staff installs multiple experiment equipment, and sets up multiple rainfall level to carry out contrast experiment, the collected rainwater in the simulation rainfall experiment is used for irrigation to experimental field, in order to facilitate the staff to explore the influence of the change of rainfall on the growth process of plants. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is external structure schematic view of the simulation seasonal precipitation change increase and decrease experiment equipment of the application; Figure 2 It is connection structure schematic view of the application collection assembly, detection assembly and flow guide assembly; Figure 3 It is another angle connection structure schematic view of the application collection assembly, detection assembly and flow guide assembly; Figure 4 It is connection structure schematic view of the application flow guide assembly and detection assembly; Figure 5 It is cross section structure schematic view of the application collection bucket and flow guide cover group; Figure 6 It is enlarged structure schematic view of the application flow guide cover group and detection assembly connection position; Figure 7 It is cross section structure schematic view of the application flow guide cover group; Figure 8 It is connection structure schematic view of the application detection assembly and collection assembly outside; Figure 9 It is cross section structure schematic view of the application collection assembly; Figure 10 It is connection structure schematic view of the application piezoelectric rain sensor and positioning seat; Figure 11 It is enlarged structure schematic view of the application anti-blocking guide piece.

[0021] In the diagram: 1. Support frame; 2. Stable base plate; 3. Inner plate; 4. Collection assembly; 41. Conduit; 42. Drainage port; 43. Connecting pipe; 44. Anti-clogging guide; 441. Inward tilting ring; 442. Flow guide ring; 443. Side support frame; 45. Inclined guide plate; 5. Detection assembly; 51. Positioning seat; 52. Mounting slot; 53. Piezoelectric rain sensor; 531. Rain sensing surface; 532. Expansion pole; 533. Ceramic plate; 534. Housing; 54. Circular groove; 6. Flow guide assembly; 61. Collection hopper; 62. Flow guide hood assembly; 621. Filter cover; 622. Ring gasket; 623. Connecting piece; 624. Segmented flow guide strip; 63. Top frame; 64. Inclined support plate; 65. Fixing ring; 7. Discharge port; 8. Nozzle. Detailed Implementation

[0022] 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 embodiments of the present invention, and not all embodiments. Based on the 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.

[0023] First embodiment, such as Figures 1 to 11 As shown, the present invention provides a technical solution: an experimental device for simulating seasonal precipitation changes, comprising: a stable base plate 2, which is used to stably place the experimental device; a support frame 1 is fixedly installed on the top side of the stable base plate 2; an inner connecting plate 3 is fixedly installed in the middle of the inside of the stable base plate 2; and an outlet 7 is provided at the axis of the inner connecting plate 3. Collection component 4, which is used for rainfall accumulation detection, is fixedly installed at the middle of the top of the inner plate 3, and is connected to the outlet 7; The collecting assembly 4 comprises a conduit 41, the inside of the conduit 41 is provided with a plurality of drainage openings 42 which are distributed in a circumferential manner on the surface of the conduit 41, the outer surface of the conduit 41 is sleeved with an inclined guide disc 45 which is in communication with the drainage openings 42, the bottom of the conduit 41 is fixedly provided with a connecting pipe 43, and the inside of the side of the connecting pipe 43 away from the conduit 41 is fixedly provided with an anti-blocking guide element 44. Since the spray head 8 is sprayed above the experimental equipment, after the rainwater is sprayed on the surface of the piezoelectric rain sensor 53 through the flow guide cover group 62, the raindrops drop downward into the inclined guide disc 45, and then flow into the connecting pipe 43 through the drainage openings 42 provided on the surface of the inclined guide disc 45, and the anti-blocking guide element 44 guides the rainwater in the process of dropping downward, so that the rainwater is transported to the direction of the discharge port 7, the discharge port 7 is in communication with the experimental field through the irrigation pipeline, a plurality of experimental equipments are installed by the staff, and a plurality of rainfall levels are set to carry out a contrast experiment, and the collected rainwater is used to irrigate the experimental field during the simulation rainfall experiment, so that the staff can explore the influence of the increase and decrease of the rainfall on the plant growth process.

[0024] The flow guide assembly 6 is used for guiding and draining the rainfall detection, and is fixedly installed on the top of the support frame 1, is arranged above the supporting bottom plate 2 through the support frame 1, and the upper side of the collecting assembly 4 is provided with the spray head 8 through the water storage tank; The flow guide assembly 6 comprises a top frame 63, a fixed ring 65 is fixedly installed in the inside of the top frame 63, and the bottom of the fixed ring 65 and the top frame 63 are both fixedly provided with an inclined support plate 64, a collecting hopper 61 is fixedly installed on the top of the top frame 63, and a flow guide cover group 62 is fixedly installed in the inside of the fixed ring 65. When the spray head 8 sprays the rainfall process of different intensities, the raindrops are sprayed into the collecting hopper 61 and then are transported to the position of the detection assembly 5 through the flow guide cover group 62, the inner wall of the collecting hopper 61 is arranged in an inclined manner, the sprayed raindrops slide downward along the inner wall of the collecting hopper 61, the raindrop collection effect is achieved by using the gravity of the raindrops, the automatic water guiding effect is realized, and then the raindrops flow downward along the flow guide cover group 62 to the surface of the detection assembly 5, so that the rainfall intensity is detected.

[0025] The top frame 63 is fixedly installed on the top of the support frame 1, a plurality of inclined support plates 64 are arranged in a circumferential manner on the outer surface of the detection assembly 5, and the flow guide cover group 62 is fixedly installed above the detection assembly 5 through the fixed ring 65.

[0026] The detection assembly 5 is used for rainfall intensity monitoring, and is fixedly installed at the top of the collecting assembly 4, is arranged on the same central axis as the flow guide assembly 6, and is fixedly connected to the bottom of the flow guide assembly 6. When the experiment is carried out, first, according to the experimental purpose and research requirements, the precipitation change parameters and environmental condition parameters are set on the operation interface of the data processing and control system. The system converts these parameters into control instructions and sends them to the precipitation simulation equipment, so that the water pump transports the water in the water storage tank to the spray head 8, and sprays the simulated rainfall process with different intensities through the spray head 8. The sprayed raindrops fall into the flow guide assembly 6 and the collecting assembly 4. The flow guide assembly 6 makes the sprayed raindrops flow to the position of the detection assembly 5. The raindrops fall on the surface of the detection assembly 5, and produce mechanical impact force or pressure on the sensor, so as to monitor the rainfall intensity.

[0027] The detection assembly 5 comprises a positioning seat 51 fixedly installed at the top of the collecting assembly 4, a circular groove 54 is formed in the middle of the top of the positioning seat 51, a piezoelectric raindrop sensor 53 is fixedly installed in the circular groove 54, and an installation groove 52 is formed in the outer surface of the positioning seat 51 and is fixedly connected with the inclined supporting plate 64. By means of the spray head 8, the precipitation change law of different regions and different seasons is simulated. When the raindrops of different rainfall amounts fall on the rain-sensitive surface 531 along the sectional flow guide strips 624, the raindrops produce mechanical impact force or pressure on the sensor. When the raindrops impact the surface of the sensor, a slight mechanical vibration is generated. The piezoelectric material deforms and generates an electric signal. The electric signal is transmitted to the processor to record and analyze the rainfall amount.

[0028] The second embodiment is based on the first embodiment, please refer to Figures 4 to 10 As shown in the figure, the flow guide cover group 62 comprises a ring pad 622, a filter cover 621 is fixedly installed at the top of the ring pad 622, a connecting piece 623 and a sectional flow guide strip 624 are fixedly installed at the bottom of the ring pad 622, the connecting piece 623 is fixedly installed at the bottom of the fixed ring 65, and three connecting pieces 623 are uniformly distributed on the outer side of the sectional flow guide strip 624. After the raindrops are collected in the collecting hopper 61, the raindrops flow downward along the groove holes formed in the surface of the filter cover 621. The filter cover 621 separates the impurities in the sprayed raindrops, so as to prevent the sprayed raindrops from carrying impurities and causing wear of the detection assembly 5, achieve the isolation and protection of the detection assembly 5, reduce the contact between the detection assembly 5 and the outside world, prevent the data from being disturbed during detection, and change the impact force of the raindrop flow according to the sprayed rainfall amount, so as to facilitate the rainfall measurement.

[0029] The piezoelectric rain sensor 53 comprises a shell 534, a ceramic sheet 533 is fixedly installed on the top of the shell 534, and an expansion vertical rod 532 is fixedly installed on the side of the top of the ceramic sheet 533; the expansion vertical rod 532 is provided with three, and a rain sensing surface 531 is fixedly installed on the top of the three expansion vertical rods 532. The rain sensing surface 531 is provided as a circular arc surface, and after the raindrops falling on the rain sensing surface 531 along the segmented flow guide strip 624, the raindrops can quickly slide off the rain sensing surface 531, so that the rainwater is prevented from adhering to the rain sensing surface 531 to affect the detection accuracy.

[0030] The shell 534 is fixedly installed in the inside of the circular groove 54, a piezoelectric element is fixedly installed in the inside of the shell 534, the piezoelectric element is electrically connected with the rain sensing surface 531, and the rain sensing surface 531 is arranged below the flow guide cover group 62.

[0031] The third embodiment is based on the first and second embodiments, please refer to Figure 8 、 Figure 9 and Figure 11 , the connecting pipe 43 is fixedly installed at the middle of the top of the inner connecting plate 3, the conduit 41 is fixedly installed at the bottom of the positioning seat 51, and the anti-blocking guide 44 is fixedly connected with the supporting bottom plate 2.

[0032] The anti-blocking guide 44 comprises a flow guide ring 442, an inner inclined ring 441 is fixedly installed on the top of the flow guide ring 442, a side support frame 443 is fixedly installed on the outer surface of the flow guide ring 442, and the side support frame 443 extends to the surface of the supporting bottom plate 2 through the connecting pipe 43. The side support frame 443 is supported on the outer side of the connecting pipe 43 and connected with the supporting bottom plate 2, and the connecting pipe 43 is stably supported.

[0033] In use, first, according to the experimental purpose and research requirement, the precipitation change parameters and the environmental condition parameters are set on the operation interface of the data processing and control system. The system converts these parameters into control instructions and sends them to the precipitation simulation equipment, so that the water pump transports the water in the water storage tank to the spray head 8, and sprays the raindrops of different intensities through the spray head 8, and the sprayed raindrops fall into the flow guide assembly 6 and the collection assembly 4, the flow guide assembly 6 makes the sprayed raindrops flow to the position of the detection assembly 5, and the raindrops fall on the surface of the detection assembly 5, so as to generate mechanical impact force or pressure on the sensor, so as to monitor the rainfall intensity.

[0034] When the spray head 8 sprays simulated rainfall processes with different intensities, the raindrops are sprayed into the collecting bucket 61 and transported to the position of the detection assembly 5 along the group of flow guides 62. The inner wall of the collecting bucket 61 is inclined, the sprayed raindrops slide down along the inner wall of the collecting bucket 61, and the raindrop collection effect is achieved by using the gravity of the raindrops themselves, thereby realizing the automatic water guiding function. Then the raindrops flow down along the group of flow guides 62 to the surface of the detection assembly 5 to detect the rainfall intensity.

[0035] After the raindrops are collected in the collecting bucket 61, the raindrops flow down along the groove on the surface of the filter cover 621. The filter cover 621 separates the impurities in the sprayed raindrops to prevent the sprayed raindrops from carrying impurities and causing wear of the detection assembly 5, thereby achieving the isolation and protection of the detection assembly 5, reducing the contact of the detection assembly 5 with the outside world, preventing the data from being disturbed during detection, and changing the impact force of the raindrop flow according to the sprayed rainfall to facilitate the rainfall measurement.

[0036] By simulating the rainfall variation law of different regions and different seasons through the spray head 8, the raindrops with different rainfall flow down on the sensing surface 531 along the segmented flow guide strip 624, and the raindrops produce mechanical impact force or pressure on the sensor. When the raindrops impact the surface of the sensor, a small mechanical vibration is generated, the piezoelectric material deforms and generates an electric signal, and the electric signal is transmitted to the processor to record and analyze the rainfall.

[0037] The surface of the sensing surface 531 is set as a circular arc surface. After the raindrops flow down on the sensing surface 531 along the segmented flow guide strip 624, the raindrops can quickly slide off the sensing surface 531, thereby avoiding the rainwater from adhering to the sensing surface 531 and affecting the detection accuracy.

[0038] Since the spray head 8 is sprayed above the experimental equipment, after the rainwater is sprayed on the surface of the piezoelectric rain sensor 53 along the group of flow guides 62, the raindrops drop down into the inclined guide disc 45 and flow into the connecting pipe 43 along the drainage opening 42 on the surface of the inclined guide disc 45. The rainwater is guided by the anti-blocking guide 44 during the downward dropping process, so as to transport the rainwater to the direction of the discharge outlet 7. The discharge outlet 7 is connected to the experimental field through the irrigation pipeline. The staff installs multiple experimental equipment and sets multiple rainfall levels for comparison experiments. The collected rainwater is used for irrigation of the experimental field during the simulation rainfall experiment, so as to facilitate the staff to explore the influence of the increase and decrease of the rainfall on the plant growth process.

[0039] The side support frame 443 is supported outside the connecting pipe 43 and connected to the stable support bottom plate 2 to stably support the connecting pipe 43.

[0040] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0041] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, numerous modifications are possible without departing from the spirit and scope of the present application as delineated by the claims and their equivalents.

Claims

1. An experimental device for simulating the increase and decrease of seasonal precipitation changes, characterized in that, include: A stable base plate (2) is used to stably place experimental equipment. A support frame (1) is fixedly installed on the top side of the stable base plate (2). An inner connecting plate (3) is fixedly installed in the middle of the inside of the stable base plate (2). An outlet (7) is opened at the axis of the inner connecting plate (3). A collection component (4) is used for rainfall accumulation detection. The collection component (4) is fixedly installed at the middle of the top of the inner plate (3) and is connected to the outlet (7). The flow guiding component (6) is used for guiding and diverting precipitation detection. The flow guiding component (6) is fixedly installed on the top of the support frame (1). The flow guiding component (6) is erected above the stable support plate (2) through the support frame (1). The collection component (4) is equipped with a nozzle (8) through a water storage tank. The detection component (5) is used for monitoring rainfall intensity. The detection component (5) is fixedly installed on the top of the collection component (4). The detection component (5) and the flow guiding component (6) are arranged on the same central axis. The outer surface of the detection component (5) is fixedly connected to the bottom of the flow guiding component (6).

2. The experimental device for simulating seasonal precipitation changes according to claim 1, characterized in that: The flow guiding assembly (6) includes a top frame (63), a fixing ring (65) is fixedly installed inside the top frame (63), an inclined support plate (64) is fixedly installed at the bottom of both the fixing ring (65) and the top frame (63), a collection hopper (61) is fixedly installed at the top of the top frame (63), and a flow guiding shroud assembly (62) is fixedly installed inside the fixing ring (65).

3. The experimental device for simulating seasonal precipitation changes according to claim 2, characterized in that: The top frame (63) is fixedly installed on the top of the support frame (1). Several inclined support plates (64) are provided, and the several inclined support plates (64) are distributed in a circumferential shape on the outer surface of the detection component (5). The flow guide assembly (62) is fixedly installed above the detection component (5) by a fixing ring (65).

4. The experimental device for simulating seasonal precipitation changes according to claim 3, characterized in that: The flow guide assembly (62) includes a ring pad (622), a filter cover (621) is fixedly installed on the top of the ring pad (622), and a connecting piece (623) and a segmented flow guide strip (624) are fixedly installed on the bottom of the ring pad (622). The connecting piece (623) is fixedly installed on the bottom of the fixing ring (65). There are three connecting pieces (623), and the three connecting pieces (623) are evenly distributed on the outside of the segmented flow guide strip (624).

5. The experimental device for simulating seasonal precipitation changes according to claim 1, characterized in that: The detection component (5) includes a positioning seat (51), which is fixedly installed on the top of the collection component (4). A circular groove (54) is provided in the middle of the top of the positioning seat (51). A piezoelectric rain sensor (53) is fixedly installed inside the circular groove (54). An installation groove (52) is provided on the outer surface of the positioning seat (51), and the installation groove (52) is fixedly connected to the inclined support plate (64).

6. The experimental device for simulating seasonal precipitation changes according to claim 5, characterized in that: The piezoelectric rain sensor (53) includes a housing (534), a ceramic plate (533) is fixedly installed on the top of the housing (534), an expansion rod (532) is fixedly installed on the side of the top of the ceramic plate (533), three expansion rods (532) are provided, and a rain-sensing surface (531) is fixedly installed on the top of the three expansion rods (532).

7. The experimental device for simulating seasonal precipitation changes according to claim 6, characterized in that: The housing (534) is fixedly installed inside the circular groove (54). A piezoelectric element is fixedly installed inside the housing (534). The piezoelectric element is electrically connected to the rain-sensing surface (531). The rain-sensing surface (531) is located below the shroud assembly (62).

8. The experimental device for simulating seasonal precipitation changes according to claim 1, characterized in that: The collection component (4) includes a conduit (41), the inside of which is provided with a drainage port (42), the drainage port (42) is distributed in a circumferential shape on the surface of the conduit (41), the outer surface of the conduit (41) is fitted with an inclined guide plate (45), the inclined guide plate (45) is connected to the drainage port (42), a connecting pipe (43) is fixedly installed at the bottom of the conduit (41), and an anti-blocking guide (44) is fixedly installed inside the connecting pipe (43) on the side away from the conduit (41).

9. The experimental device for simulating seasonal precipitation changes according to claim 8, characterized in that: The connecting pipe (43) is fixedly installed at the middle of the top of the inner plate (3), the conduit (41) is fixedly installed at the bottom of the positioning seat (51), and the anti-blocking guide (44) is fixedly connected to the stabilizing base plate (2).

10. The experimental device for simulating seasonal precipitation changes according to claim 9, characterized in that: The anti-blocking guide (44) includes a flow guide ring (442), an inclination ring (441) is fixedly installed on the top of the flow guide ring (442), and a side support (443) is fixedly installed on the outer surface of the flow guide ring (442). The side support (443) extends through the connecting pipe (43) to the surface of the stabilizing base plate (2).

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