A matrix-type dynamic rain test device

By designing a three-dimensional surround spray pipeline and a branched matrix nozzle, combined with sensor monitoring, the problems of uneven coverage and slow response speed of the spray system were solved, realizing all-round rain testing and anomaly detection, and improving the accuracy and reliability of test data.

CN224435672UActive Publication Date: 2026-06-30JIANGSU DAFU INTEGRATED EQUIP TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU DAFU INTEGRATED EQUIP TECH CO LTD
Filing Date
2025-07-25
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The existing sprinkler system has unreasonable nozzle settings, resulting in limited coverage, uneven spraying effect, slow response speed of flow and water pressure control, difficulty in achieving all-round rain test, and inability to detect and eliminate pipeline abnormalities in a timely manner.

Method used

It adopts a three-dimensional surround spray pipeline and a branched matrix nozzle, combined with flow and water pressure sensors, to achieve real-time monitoring and dynamic control, simulating different rain effects.

Benefits of technology

It enables comprehensive rain testing, obtains the most realistic test data, and can promptly detect and handle sprinkler system anomalies, thereby improving test results and data accuracy.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224435672U_ABST
Patent Text Reader

Abstract

A matrix-type dynamic rain test device relates to the field of testing equipment technology. An axial water storage pipe is installed at the top of the pipe support. Below the water storage pipe, several main spray pipes are arranged in parallel via connecting pipes. A first integrated flow and pressure transmitter is installed on the connecting pipe. The main spray pipes have an inverted U-shaped structure, with vertical sections on both sides extending along the sidewalls of the spray chamber to the bottom. Y-shaped spray heads are arranged on the side of the main spray pipes facing the center of the spray chamber. Water supply pipes are installed at the bottom of both sides of the main spray pipes. A branch pipe is installed at the bottom of the water tank and connected to the water supply pipe. By setting up a three-dimensional, surrounding spray pipeline and a branched matrix of spray heads, the device can perform all-around rain testing on the product. Combined with flow and water pressure sensors installed along each path, the flow and water pressure can be monitored in real time, achieving precise dynamic control of the rain volume to simulate rain effects under different scenarios and obtain the most realistic test data.
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Description

Technical Field

[0001] This utility model relates to a matrix-type dynamic rain test device, and belongs to the field of testing equipment technology. Background Technology

[0002] After some products are manufactured, a rain test is required to test their waterproof and sealing performance.

[0003] Rain testing typically uses a spray system to conduct multi-directional spray tests on products, and also simulates the rain effects under different environments through flow and pressure control, thereby testing the product's real-world data under various spray conditions. However, existing spray systems have inefficient nozzle placement, with only multiple single nozzles on each individual pipe, resulting in limited coverage. This inevitably leads to incomplete product coverage during spraying, causing regional differences in the testing effect and affecting the test structure. Furthermore, the response speed to flow and water pressure control is slow, resulting in poor dynamic adjustment. Since the monitoring mechanism only detects flow and pressure at the water pump, it cannot adequately monitor the spray conditions of each pipe, making it difficult to promptly detect and troubleshoot abnormalities in a particular pipe, thus affecting the test results. Therefore, a matrix-type dynamic rain testing device is proposed to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this invention is to address the deficiencies or shortcomings in the existing technology by providing a matrix-type dynamic rain test device. By setting up a three-dimensional surround spray pipeline and a branched matrix nozzle, it can conduct all-round rain tests on products. Combined with the flow and water pressure sensors set on each path, it can monitor the flow and water pressure in real time, achieve precise dynamic control of the rain volume, simulate the rain effect under different scenarios, and obtain the most realistic test data.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: It includes a spray box 1 and a pipe support 2. The pipe support 2 is located on the outside of the spray box 1 and extends to the top. An axial water storage pipe 15 is provided on the top of the pipe support 2. Several spray main pipes 14 are arranged in parallel below the water storage pipe 15 through connecting pipes. A first flow and pressure integrated transmitter 27 is provided on the connecting pipe. The spray main pipes 14 have an inverted U-shaped structure. The vertical sections on both sides of the spray main pipes 14 extend along the side wall of the spray box 1 to the bottom. Y-shaped spray heads 16 are provided on the spray main pipes 14 facing the center of the spray box 1. Water supply pipes 8 are provided on the bottom of both sides of the spray main pipes 14. A water tank 6 is provided on the outside of the spray box 1. A diversion pipe 9 is provided at the bottom of the water tank 6 and connected to the water supply pipe 8. A control system 26 is also provided on the outside of the spray box 1.

[0006] Furthermore, a filter 10 is provided in the middle of one side of the bottom of the spray box 1. A second variable frequency water pump 11 is provided on the filter 10 and connected to the water storage pipe 15 through a circulation pipe 13. A pressure gauge 12 is provided on the circulation pipe 13 near the second variable frequency water pump 11.

[0007] Furthermore, the bottom of the water tank 6 is equipped with a first variable frequency water pump 7 connected to the diversion pipe 9.

[0008] Furthermore, the water supply pipe 8 and the diversion pipe 9 are connected by a control valve 901, and a second integrated flow and pressure transmitter 902 is provided at the connection section between the control valve 901 and the diversion pipe 9.

[0009] Furthermore, the water tank 6 is equipped with a multi-stage filtration mechanism and a stirring mechanism. The top of the water tank 6 is equipped with a water inlet pipe 601, the side of the water tank 6 is equipped with a one-way injection valve 602, the inside of the water tank 6 is also equipped with a pH detection device for testing water quality, and the bottom of the water tank 6 is also equipped with a drain valve for discharging wastewater.

[0010] Furthermore, the spray box 1 is hinged at both ends of the axial direction with a box door 101. The inner wall of the box door 101 is provided with a spray sub-pipe 19. Two sets of spray sub-pipes 19 are provided on each side. The spray sub-pipes 19 are arranged in an inverted E-shape. The vertical section is set downward along the box door 101. Y-shaped spray heads 16 are also provided on the spray sub-pipes 19. The water storage pipe 15 is symmetrically provided with sub-pipe connectors 151 at both ends. The sub-pipe connectors 151 are connected to the connectors 191 on the spray sub-pipes 19 through pipelines.

[0011] Furthermore, the bottom of the spray box 1 is provided with a water storage base 3, the middle of the water storage base 3 is a rectangular support platform 4, and the water storage tank is between the water storage base 3 and the support platform 4. The water storage tank cooperates with the filter 10, and the surface of the water storage tank is provided with a water seepage panel 301.

[0012] Furthermore, two sets of transport rails 17 are symmetrically arranged on the water storage base 3. Four self-driven transport seats 18 are arranged on the transport rails 17. The transport rails 17 are U-shaped rails with vertical sections forming the rail walls. A matching rack 171 is provided on the top of the inner rail wall. Guide bars 172 are provided on the outer walls of the two rail sections. A proximity switch 25 is provided on the inner wall of the outer rail wall near the outlet end.

[0013] Furthermore, the bottom of the self-driven transport seat 18 is provided with two drive motors 20. The output end of the drive motor 20 is connected to a drive gear 21 that meshes with the rack 171. Several clamping seats 22 are provided on both sides of the bottom of the self-driven transport seat 18. Two vertically arranged clamping wheels 23 are provided on the clamping seats 22 and are rolledly connected to the upper and lower end faces of the guide bar 172. The clamping seats 22 are also provided with a horizontal guide wheel 24 that is rolledly connected to the side of the guide bar 172. The bottom of the self-driven transport seat 18 is also provided with a switch trigger bracket 28.

[0014] Furthermore, the control system 26 is a PLC control terminal, which is equipped with a rainfall control module and a flow control module. The control system 26 is electrically connected to the first variable frequency water pump 7, the filter 10, the second variable frequency water pump 11, the drive motor 20, the proximity switch 25, the first integrated flow and pressure transmitter 27, and the second integrated flow and pressure transmitter 902.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are as follows: by setting up a three-dimensional surrounding spray pipeline and a branched matrix nozzle, the product can be tested in all directions by rain. Combined with the flow and water pressure sensors set on each path, the flow and water pressure can be monitored in real time, so as to achieve precise dynamic control of the amount of rain and simulate the rain effect under different scenarios to obtain the most realistic test data. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 yes Figure 1 The second angle view;

[0019] Figure 3 yes Figure 1 The third-angle view;

[0020] Figure 4 yes Figure 1 The fourth angle view;

[0021] Figure 5 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 6This is a schematic diagram of the structure of the self-driven transport seat 18 in this utility model;

[0023] Figure 7 yes Figure 2 Enlarged structural diagram at point A in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Sprayer box body; 2. Pipe support; 3. Water storage base; 4. Supporting platform; 5. Water tank support; 6. Water tank; 7. First variable frequency water pump; 8. Water supply pipe; 9. Diverter pipe; 10. Filter; 11. Second variable frequency water pump; 12. Pressure gauge; 13. Circulation pipe; 14. Main spray pipe; 15. Water storage pipe; 16. Spray head; 17. Transport guide rail; 18. Self-driven transport seat; 19. Spray auxiliary pipe; 20. Drive motor; 21. Drive gear; 22. Clamping seat; 23. Clamping wheel; 24. Guide wheel; 25. Proximity switch; 26. Control system; 27. First integrated flow and pressure transmitter; 28. Switch trigger bracket; 101. Box door; 901. Control valve; 902. Second integrated flow and pressure transmitter; 151. Auxiliary pipe connector; 191. Detailed Implementation

[0025] See Figures 1-7As shown, the technical solution adopted in this specific embodiment is as follows: It includes a spray box 1 and a pipe support 2. The pipe support 2 is located outside the spray box 1 and extends to the top. An axial water storage pipe 15 is provided at the top of the pipe support 2. Several spray main pipes 14 are arranged in parallel below the water storage pipe 15 through connecting pipes. A first flow and pressure integrated transmitter 27 is provided on the connecting pipe. The spray main pipes 14 have an inverted U-shaped structure. The vertical sections on both sides of the spray main pipes 14 extend along the side wall of the spray box 1 to the bottom. Y-shaped spray heads 16 are provided on the spray main pipes 14 facing the center of the spray box 1. Water supply pipes 8 are provided at the bottom of both sides of the spray main pipes 14. A water tank 6 is provided outside the spray box 1. A diversion pipe 9 is provided at the bottom of the water tank 6 and connected to the water supply pipe 8. A control system 26 is also provided outside the spray box 1. In this embodiment, the entire device is installed in the installation groove of the test site. Through the inverted U-shaped design of the spray main pipes, the spray main pipes can... The spray nozzles are arranged in a Y-shape along the top and sides of the equipment under test. The spray pipe faces the center of the spray box, i.e., the inner side, and the spray nozzles are symmetrically arranged on the spray pipe, with two nozzles forming a group. The spacing of the spray pipe is matched with the spray surface range of the spray nozzles. That is, the spacing between two groups of spray pipes is slightly less than the sum of the spray surface radii of two adjacent spray pipes. Therefore, the spray surfaces of two adjacent spray nozzles on two groups of spray pipes intersect at the edges. The spray nozzles in the same group are also intersected at the edges because they are Y-shaped and inclined. The spray nozzles are equidistant along the entire spray pipe, forming a matrix arrangement. Therefore, it can effectively cover the test equipment, such as vehicles, except for the bottom surface. Traditional spray systems, on the other hand, mostly set a main nozzle and a few auxiliary nozzles on a single spray pipe. Therefore, their coverage area is small. The equipment surface often suffers from uneven spraying in certain areas due to insufficient coverage or excessive intersection range, which affects the spray test effect.

[0026] This embodiment also provides a multi-mode spray system. Multiple spray modes are preset within the control system, simulating light rain, moderate rain, heavy rain, and torrential rain. Control is based on the flow rate per minute. The first integrated flow and pressure transmitter integrates flow and pressure sensors, enabling real-time monitoring of the spraying situation. The detection data is also returned to the control system in real time, ensuring the accuracy of the simulation. Simultaneously, the monitoring data can determine if a particular pipeline is abnormal. Maintenance personnel can then inspect the corresponding pipeline based on system feedback, promptly troubleshooting and ensuring the smooth progress of the test.

[0027] More specifically, a filter 10 is installed in the middle of one side of the bottom of the spray tank 1. A second variable frequency water pump 11 is installed on the filter 10 and connected to the water storage pipe 15 through a circulation pipe 13. A pressure gauge 12 is installed on the circulation pipe 13 near the second variable frequency water pump 11. In this embodiment, the filter is installed in the installation groove of the test site and is not exposed on the site surface. It filters and circulates the spray water. The pressure gauge is installed on it to monitor the output pressure and ensure that the output is normal. The pressure gauge transmits data back to the control system. It can be observed on site or monitored through the control system. This allows for effective monitoring during the use of circulating water and prevents poor circulation caused by filter failure or impurities flowing into the circulation pipe.

[0028] More specifically, the bottom of the water tank 6 is equipped with a first variable frequency water pump 7 connected to the diversion pipe 9. Specifically, the bottom of the water tank is equipped with a water tank bracket 5 for fixing the water tank, and the water tank bracket also protects the first variable frequency water pump. The water supply pipe 8 and the diversion pipe 9 are connected through a control valve 901. A second integrated flow and pressure transmitter 902 is installed at the connection section between the control valve 901 and the diversion pipe 9. The water supply for the entire spray system is drawn from the water tank by the first variable frequency water pump, transported through the diversion pipe to the water supply pipe, and then to the main spray pipe for spraying. The control valve must be closed when not in use to prevent water supply due to misoperation before testing. The second integrated flow and pressure transmitter can monitor the water output in real time to ensure normal output and can promptly feed back to the control system for timely handling in case of abnormality.

[0029] More specifically, the water tank 6 is equipped with a multi-stage filtration mechanism (not shown) and a stirring mechanism (not shown). A water inlet pipe 601 is located at the top of the water tank 6, a one-way injection valve 602 is located on the side of the water tank 6, a pH testing device (not shown) is also installed inside the water tank 6 to detect water quality, and a drain valve (not shown) is located at the bottom of the water tank 6 to discharge wastewater. In this embodiment, the water tank is a multi-stage filtration and water quality regulation mechanism. To better simulate rainwater conditions in the natural environment, reagents of different pH levels can be injected through the one-way injection valve, and then stirred by the stirring mechanism before being output, thereby obtaining more accurate test data that closely approximates the real environment.

[0030] More specifically, the spray chamber 1 is hinged at both ends of the axial direction with a door 101. The door is used for transporting the test equipment and also facilitates subsequent observation by the operator. The inner wall of the door 101 is provided with a spray sub-pipe 19. There are two sets of spray sub-pipes 19 on each side. The spray sub-pipes 19 are arranged in an inverted E-shape, with the vertical section extending downward along the door 101. In this embodiment, the spray sub-pipes are located on the inner wall of the door, thereby cooperating with the main spray pipe to form a five-directional spray test. The spray sub-pipes 19 are also provided with Y-shaped spray heads 16. The water storage pipe 15 is symmetrically provided with sub-pipe connectors 151 at both ends. The sub-pipe connectors 151 are connected to the connectors 191 on the spray sub-pipes 19 through pipelines. The water supply of the spray sub-pipes is realized through the water storage pipe. Its spraying time will be slightly later than that of the main spray pipe. After spraying for a period of time, it will spray synchronously.

[0031] More specifically, the bottom of the spray box 1 is provided with a water storage base 3, the middle of the water storage base 3 is a rectangular support platform 4, and the water storage tank is between the water storage base 3 and the support platform 4. The water storage tank cooperates with the filter 10, and the surface of the water storage tank is provided with a seepage panel 301. In this embodiment, since the entire equipment is set on the ground, the water storage base is set in the installation groove on the ground, the support platform is set in the center of the water storage base, and both the support platform and the water storage tank are rectangular structures. The water storage tank is provided with a seepage panel with grooves. The water after spraying flows from the seepage panel into the water storage tank, is filtered by the filter, and is then pumped out by the second variable frequency water pump for use as circulating water.

[0032] More specifically, the water storage base 3 is symmetrically equipped with two sets of transport guide rails 17, and four self-driven transport seats 18 are provided on the transport guide rails 17. The transport guide rails 17 are U-shaped guide rails, with the vertical section being the guide rail wall. A meshing rack 171 is provided at the top of the inner guide rail wall, and guide strips 172 are provided on the outer walls of the two guide rail sections. A proximity switch 25 is provided on the inner wall of the outer guide rail wall near the outlet end. Two drive motors 20 are provided at the bottom of the self-driven transport seat 18. The output end of the drive motor 20 is connected to a drive gear 21 that meshes with the meshing rack 171. Several clamping seats 22 are provided on both sides of the bottom of the self-driven transport seat 18, and two clamps are arranged vertically on the clamping seats 22. The holding wheel 23 is rolled to the upper and lower end faces of the guide bar 172. The clamping seat 22 is also provided with a horizontal guide wheel 24 that is rolled to the side of the guide bar 172. The bottom of the self-driven transport seat 18 is also provided with a switch trigger bracket 28. In this embodiment, an automatic conveying system is also provided, that is, the self-driven transport seat cooperates with the transport guide rail to carry out the equipment's entry and exit transport operation under the control of the control system. At the same time, an anti-misoperation structure is also provided, namely a proximity switch. The proximity switch needs to be located at the output end. When the self-driven transport seat reaches this position, the switch trigger bracket touches the proximity switch, thereby triggering a stop signal. The control system outputs a stop command, the drive motor stops running, and the equipment can accurately stop in the test area.

[0033] More specifically, the control system 26 is a PLC control terminal, which includes a rainfall control module and a flow control module. The control system 26 is electrically connected to the first variable frequency water pump 7, the filter 10, the second variable frequency water pump 11, the drive motor 20, the proximity switch 25, the first integrated flow and pressure transmitter 27, and the second integrated flow and pressure transmitter 902. In this embodiment, the rainfall control module can specifically control the water flow rate. Different flow rates per minute correspond to different rainfall modes, allowing for specific selection of light rain, moderate rain, heavy rain, and torrential rain, thereby simulating the rain effect test under real-world conditions and improving the validity of the test data. The variable frequency water pump facilitates a smooth flow transition and reduces test variability.

[0034] The working principle of this utility model is as follows: Before the spray test, water tank 6 is filled with water by connecting to an external water supply system through the water inlet pipe 601. At the same time, acid and alkali reagents are injected as needed through the one-way injection valve 602, and the stirring mechanism is started to stir. The pH detection device detects the acidity and alkalinity. At this time, the equipment can be fixed on the self-driven transport seat 18. The drive motor 20 is started by the control system 26, which drives the equipment to move along the transport guide rail 17. When the switch trigger bracket 28 contacts the proximity switch 25, a stop signal is triggered, the drive motor 20 stops working, and the entire equipment stops in the test area. Inside, with both end doors 101 closed, testing begins. The output water volume is controlled by the first variable frequency water pump 7. Water enters the two side water supply pipes 8 from the diversion pipe 9, and then flows upward from the main spray pipe 14, spraying out from each spray head 16. Simultaneously, the water collects at the top water storage pipe 15, flows to both ends, and then enters the secondary spray pipe 19 for spraying. Except for the bottom, the entire equipment is sprayed from five directions. Because the spray heads 16 are arranged in a Y-shape, the spray surfaces of the spray heads 16 on adjacent sets of main spray pipes 14 intersect at the edges, and every two spray heads on the same main spray pipe 14... The spray nozzles intersect at the edges, creating a matrix-like coverage of the equipment. This ensures comprehensive coverage while conserving water, effectively improving the spray test results. During the spraying process, the first integrated flow and pressure transmitter 27 monitors the spray flow and pressure in real time. The control system 26 can select different rainfall modes, such as light rain or heavy rain, according to test requirements. Combined with spray duration control, the water flow velocity can be changed rapidly and smoothly in real time. Furthermore, since the first integrated flow and pressure transmitter 27 is set for each group of spray main pipes 14, it can monitor the operation of each group of spray main pipes 14. The system monitors the operation, and if any problem occurs in any of the pipelines, the corresponding location will be displayed on the control system 26, allowing for timely repair of that pipeline group and avoiding any impact on the test results. The entire spray system can also recycle water. The used water enters the bottom water storage tank, in which the filter 10 is submerged. The second variable frequency water pump 11 is started to extract the filtered water, which is then transported to the water storage pipe 15 through the circulation pipe 13 and circulated back into the main spray pipe 14. After the circulating water is filtered by the filter 10, impurities are filtered out, preventing blockage of the spray heads 16 and ensuring the smooth flow of the entire pipeline.

[0035] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A matrix dynamic rain test apparatus, characterized by: It includes a spray box (1) and a pipe support (2). The pipe support (2) is located outside the spray box (1) and extends to the top. An axial water storage pipe (15) is provided at the top of the pipe support (2). Several spray main pipes (14) are arranged in parallel below the water storage pipe (15) through a connecting pipe. A first flow and pressure integrated transmitter (27) is provided on the connecting pipe. The spray main pipe (14) has an inverted U-shaped structure. The vertical sections on both sides of the spray main pipe (14) extend along the side wall of the spray box (1) to the bottom. A Y-shaped arrangement of spray heads (16) is provided on the spray main pipe (14) facing the center of the spray box (1). Water supply pipes (8) are provided at the bottom of both sides of the spray main pipe (14). A water tank (6) is provided outside the spray box (1). A diversion pipe (9) is provided at the bottom of the water tank (6) and connected to the water supply pipe (8). A control system (26) is also provided outside the spray box (1).

2. A matrix dynamic rain test apparatus according to claim 1, characterized in that: A filter (10) is provided in the middle of one side of the bottom of the spray box (1). A second variable frequency water pump (11) is provided on the filter (10) and connected to the water storage pipe (15) through a circulation pipe (13). A pressure gauge (12) is provided on the circulation pipe (13) near the second variable frequency water pump (11).

3. The matrix-type dynamic rain test device according to claim 1, characterized in that: The bottom of the water tank (6) is equipped with a first variable frequency water pump (7) connected to the diversion pipe (9).

4. The matrix-type dynamic rain test device according to claim 1, characterized in that: The water supply pipe (8) and the branch pipe (9) are connected by a control valve (901), and a second integrated flow and pressure transmitter (902) is provided at the connection section between the control valve (901) and the branch pipe (9).

5. The matrix-type dynamic rain test device according to claim 1, characterized in that: The water tank (6) is equipped with a multi-stage filtration mechanism and a stirring mechanism. The top of the water tank (6) is equipped with a water inlet pipe (601), the side of the water tank (6) is equipped with a one-way injection valve (602), the inside of the water tank (6) is also equipped with a pH detection device for testing water quality, and the bottom of the water tank (6) is also equipped with a drain valve for discharging wastewater.

6. The matrix-type dynamic rain test device according to claim 1, characterized in that: The spray box (1) is hinged at both ends of the axial direction and has a door (101). The inner wall of the door (101) is provided with a spray sub-pipe (19). There are two sets of spray sub-pipes (19) on each side. The spray sub-pipes (19) are arranged in an inverted E-shape. The vertical section is set downward along the door (101). The spray sub-pipes (19) are also provided with spray heads (16) arranged in a Y-shape. The water storage pipe (15) is symmetrically provided with sub-pipe connectors (151) at both ends. The sub-pipe connectors (151) are connected to the connectors (191) on the spray sub-pipes (19) through the pipeline.

7. The matrix-type dynamic rain test device according to claim 1, characterized in that: The spray box (1) is provided with a water storage base (3) at the bottom. The middle part of the water storage base (3) is a rectangular support platform (4). The water storage tank is between the water storage base (3) and the support platform (4). The water storage tank is matched with the filter (10), and the surface of the water storage tank is provided with a water seepage panel (301).

8. The matrix-type dynamic rain test device according to claim 7, characterized in that: Two sets of transport rails (17) are symmetrically arranged on the water storage base (3). Four self-driven transport seats (18) are arranged on the transport rails (17). The transport rails (17) are U-shaped structure rails. The vertical section is the rail wall. A matching rack (171) is arranged on the top of the inner rail wall. Guide strips (172) are arranged on the outer walls of the two rail walls. A proximity switch (25) is arranged on the inner wall of the outer rail wall near the outlet end.

9. A matrix-type dynamic rain testing device according to claim 8, characterized in that: The self-driven transport seat (18) is provided with two drive motors (20) at the bottom. The output end of the drive motor (20) is connected to a drive gear (21) that meshes with a rack (171). Several clamping seats (22) are provided on both sides of the bottom of the self-driven transport seat (18). Two vertically arranged clamping wheels (23) are provided on the clamping seats (22) and are rolled to the upper and lower end faces of the guide bar (172). The clamping seats (22) are also provided with a horizontal guide wheel (24) that is rolled to the side of the guide bar (172). A switch trigger bracket (28) is also provided at the bottom of the self-driven transport seat (18).

10. A matrix-type dynamic rain testing device according to claim 1, characterized in that: The control system (26) is a PLC control terminal, which is equipped with a rainfall control module and a flow control module. The control system (26) is electrically connected to the first variable frequency water pump (7), the filter (10), the second variable frequency water pump (11), the drive motor (20), the proximity switch (25), the first flow and pressure integrated transmitter (27), and the second flow and pressure integrated transmitter (902).