A top rain shower device for sealing test and working method thereof

Abstract

The application provides a top rain shower device for sealing test and a working method thereof, and belongs to the field of a top rain shower device for sealing test and a working method thereof. The device solves the problems of the prior art, i.e., inconvenience in installation on a lifting device to control the spraying distance and inability to independently control the precipitation of each spraying unit. The device comprises a plurality of rain shower frames arranged in a matrix, wherein the rain shower frame comprises a first water supply pipeline, a second water distributor, a rain shower table, a spray pipe and a nozzle; the first water supply pipeline is connected with the second water distributor; the second water distributor is installed on one side of the rain shower table; a plurality of groups of spraying pipe groups are uniformly arranged at the middle position of the rain shower table; each spraying pipe group comprises two spray pipes and nozzles uniformly installed on the spray pipes; and different types of nozzles are installed on the two spray pipes of each spraying pipe group. The device is mainly used for rain sealing test.

Description

Technical Field

[0001] The invention belongs to the technical field of rain test, and in particular relates to a top rain device for sealing test and a working method thereof. Background Art

[0002] At present, some outdoor equipment needs to work outdoors for a long time, so it is necessary to carry out sealing rain test. The operating tasks and characteristics of outdoor equipment determine the characteristics of the test: ① The test piece is closely related to modern advanced science and technology: for example, supersonic wind tunnel experimental technology and holographic photography technology have been widely used in aerodynamic tests of test pieces; ② The scale and cost of the test are huge, the preparation time is long, and the test area is wide: for example, the power required to drive a continuous supersonic wind tunnel with a Mach number greater than 10 and a test section diameter of 2 to 3 meters is as high as 160,000 kilowatts; ③ There are many coordination tests: The test piece is composed of many subsystems, with many single machines and components. The incoordination problems between them are usually discovered and solved by multiple coordination tests between single machines, between subsystems and the entire system.

[0003] Various test pieces have different characteristics and development procedures, and the test contents are also different, but aerodynamic tests, structural tests, environmental tests, reliability and life tests, and ground test runs are test items that most test pieces must undergo; environmental tests include rain tests, also called airtight rain tests. Rain tests for test pieces usually use large-scale comprehensive climate environment laboratories that can simulate various climate environments to simulate the rain environment. However, existing test piece sealing rain test equipment is not convenient to install on a lifting device to control the spray distance, and cannot independently control the precipitation of each spray unit. Summary of the Invention

[0004] In view of this, the present invention aims to propose a top rain shower device for sealing test and its working method, so as to solve the problem that the existing technology is not convenient to be installed on a lifting device to control the spraying distance and cannot independently control the precipitation of each spray unit.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A top shower device for sealing testing includes multiple shower platforms arranged in a matrix. The shower platforms include a primary water supply pipe, a secondary water distributor, a shower platform, a spray pipe, and a nozzle. The primary water supply pipe is connected to the secondary water distributor, and the secondary water distributor is installed on one side of the shower platform. Multiple groups of spray pipes are evenly distributed in the middle of the shower platform. The spray pipe groups include two spray pipes and nozzles evenly installed on the spray pipes.

[0007] Furthermore, the two spray pipes of the spray pipe group are respectively installed with nozzles of different models.

[0008] Furthermore, a water collector is installed on the other side of the shower platform, and the water collector is connected to the spray pipe.

[0009] Furthermore, the water outlet end of the water collector is connected to the water outlet pipe.

[0010] Furthermore, a solenoid valve is provided at the connection between the water collector and each spray pipe group.

[0011] Furthermore, a check valve is provided at the water outlet end of the nozzle.

[0012] Furthermore, the water inlet end of the nozzle is provided with a proportional regulating valve and a pressure sensor in sequence along the water flow direction.

[0013] Furthermore, the shower platform is connected to the lifting platform by means of a steel cable hoisting method, so as to adjust the height of the shower platform.

[0014] Furthermore, a level and an inclination sensor are installed on the shower platform.

[0015] A method for operating a top rain shower device for a sealing test comprises the following steps:

[0016] Step 1: Connect the shower platform 8 of the shower rack to the lifting platform by means of a steel cable hoist;

[0017] Step 2: Set the rain duration, rainfall intensity and range;

[0018] Step 3: Turn on the main switch of the branch water supply, and then read the branch water supply pressure and flow;

[0019] Step 4: Open the on / off valves of each branch spray pipe group and maintain the pressure of the spray pipe group;

[0020] Step 5: If the target rain intensity needs to be changed during the test, the pipeline pressure and the height of the lifting platform are changed through the PID method to obtain the target rain intensity.

[0021] Step 6: When the set rain time is reached, turn off the main water supply switch to end the rain test.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention adopts a matrix arrangement of four shower stands, which can increase the shower coverage area, and adopts the method of lifting the shower stand to control the spraying distance between the nozzle and the test piece. The independent shower stand design is convenient for installation on the lifting system, and the modular design enables each shower stand to perform spraying work independently.

[0024] 2. The present invention adopts two different types of nozzles, which can adjust different rainfall intensities.

[0025] 3. The present invention allows the shower platform to be mounted on a lifting platform. Adjusting the height of the shower platform and combining pressure and spray distance parameters can achieve regulation of shower intensity. Specifically, the lifting and lowering of the top shower platform can change the spray distance between the nozzle and the test piece. By adjusting the lifting and lowering distance, rainfall intensity and uniformity can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic structural diagram of a top rain shower device for sealing testing according to the present invention;

[0028] Figure 2 Installation diagram for each valve;

[0029] Figure 3 It is a flowchart of the present invention;

[0030] Figure 4 This is a schematic diagram of the combination of four rain shower stands.

[0031] 1-First-level water supply pipe, 2-pressure sensor, 3-proportional regulating valve, 4-second-level water distributor, 5-outlet pipe, 6-water collector, 7-solenoid valve, 8-shower platform. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features therein can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0033] See also Figure 1-2 To illustrate this embodiment, a top shower device for sealing testing includes a plurality of shower platforms arranged in a matrix, wherein the shower platform includes a primary water supply pipe 1, a secondary water distributor 4, a shower platform 8, a spray pipe 9 and a nozzle 10. The primary water supply pipe 1 is connected to the secondary water distributor 4, and the secondary water distributor 4 is installed on one side of the shower platform 8. A plurality of spray pipe groups are evenly distributed in the middle position of the shower platform 8, and the spray pipe group includes two spray pipes 9 and nozzles 10 evenly installed on the spray pipes 9.

[0034] The size of each shower stand is 2×2m 2, the effective coverage spray area is 1.5×1.5m 2 Each shower platform 8 is supplied with water by a separate pipe, and the water inlet pipe is connected to the primary water supply pipe 1 of the shower platform 8. In this embodiment, four shower platforms are arranged in a matrix, which can increase the shower coverage area. Each shower platform 8 is provided with a secondary water distributor 4, which can control each shower platform 8 to perform showering work independently. The independent shower platform design is convenient for installation on the lifting system. The modular design allows each shower platform to perform spraying work independently.

[0035] The device can expand the shower area by increasing the number of independent shower platforms.

[0036] Furthermore, different types of nozzles 10 are installed on the two nozzles 9 of the spray pipe group, with flow codes of VKE-0.6 and VKE-1.0 respectively. The rainfall intensity is achieved by activating nozzles 10 with different flow rates, changing the distance between the nozzle 10 and the test piece, and changing the water pressure in the pipeline. Among them, the VKE-1 nozzle covers a rainfall intensity range of 105-300mm / h, and the VKE0.6 nozzle covers a rainfall intensity range of 5-105mm / h. The two nozzles share a spray rack. If a single nozzle is used for spraying, it is difficult to achieve a wider range of rain intensity indicators within the pressure range of a single nozzle.

[0037] The rainfall uniformity in the rain simulation test is related to the spray characteristics of the nozzle 10, the layout of the nozzle 10 and the pressure fluctuation of the pipeline. The solid conical nozzle used in the present invention has the characteristic that the spray angle does not change with pressure. Therefore, a regular rectangular layout can meet the requirements, reducing the complexity of the nozzle 10 layout and making better use of the uniformity. The nozzle 10 layout can be determined by the matching nozzle 10 calibration test bench and the developed rainfall uniformity simulation program. The nozzle 10 can achieve the best spray effect at a position 0.3m away from the surface of the test piece. Near the core working pressure of 0.3-0.8MPa, the spray stability and uniformity of the nozzle 10 are the best. Therefore, under the premise of meeting the rainfall intensity, the present invention ensures that the nozzle is in the best operating condition as much as possible, and makes a more detailed division of the non-core rainfall intensity range and the core rainfall intensity range. A small number of special nozzles can also be added according to actual needs to meet specific performance indicators under specific working conditions.

[0038] Furthermore, a water collector 6 is installed on the other side of the shower platform 8, and the water collector 6 is connected to the nozzle 9. The water outlet end of the water collector 6 is connected to the water outlet pipe 5. A solenoid valve 7 is provided at the connection between the water collector 6 and each sprinkler pipe group. In order to ensure the stability of the water pressure in the nozzle 9, the solenoid valve 7 can also be opened after the test to collect the water in the nozzle 9 through the water collector 6, which is convenient for subsequent test work and avoids waste of water resources.

[0039] Furthermore, a check valve is provided at the water outlet end of the nozzle 9 to prevent the water in the water collector 6 from flowing back into the nozzle 9, affecting the flow rate of water in the nozzle 9 and further affecting the accuracy of the test.

[0040] Furthermore, the water inlet end of the nozzle 9 is provided with a proportional regulating valve 3 and a pressure sensor 2 in sequence along the water flow direction to achieve precise regulation of the pipeline pressure.

[0041] Furthermore, the shower platform 8 is connected to the lifting platform by means of a steel cable hoisting method, which is used to adjust the height of the shower platform 8. A spirit level and an inclination sensor are installed on the shower platform 8. Taking into account the processing error of the cantilever of the lifting platform and the possible deformation problem caused by long-term use, which causes the shower platform to be in a non-horizontal state and affects the realization of rainfall indicators, the shower platform will be connected to the lifting platform by means of a steel cable hoisting method. The end of the steel cable is controlled by a motor, and the angle of the shower platform is dynamically adjusted in real time in conjunction with the spirit level or inclination sensor to ensure that it is in a horizontal state.

[0042] A method for operating a top rain shower device for a sealing test comprises the following steps:

[0043] Step 1: Connect the shower platform 8 of the shower rack to the lifting platform by means of a steel cable hoist;

[0044] Step 2: Set the rain duration, rainfall intensity and range;

[0045] Step 3: Turn on the main switch of the branch water supply, and then read the branch water supply pressure and flow;

[0046] Step 4: Open the on / off valves of each branch spray pipe group and maintain the pressure of the spray pipe group;

[0047] Step 5: If the target rain intensity needs to be changed during the test, the pipeline pressure and the height of the lifting platform are changed through the PID method to obtain the target rain intensity.

[0048] Step 6: When the set rain time is reached, turn off the main water supply switch to end the rain test.

[0049] The embodiments of the present invention disclosed above are intended only to illustrate the present invention. The embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A top rain shower device for sealing test, characterized by: The invention comprises a plurality of shower racks arranged in a matrix, wherein the shower rack comprises a primary water supply pipe (1), a secondary water distributor (4), a shower platform (8), a spray pipe (9) and a nozzle (10), wherein the primary water supply pipe (1) is connected to the secondary water distributor (4), the secondary water distributor (4) is installed on one side of the shower platform (8), a plurality of spray pipe groups are evenly distributed in the middle position of the shower platform (8), the spray pipe group comprises two spray pipes (9) and nozzles (10) evenly installed on the spray pipes (9), and different types of nozzles (10) are respectively installed on the two spray pipes (9) of the spray pipe group, a water collector (6) is installed on the other side of the shower platform (8), the water collector (6) is connected to the spray pipe (9), the shower platform (8) is connected to the lifting platform by a steel cable hoisting method, and is used to adjust the height of the shower platform (8), and a level meter and an inclination sensor are installed on the shower platform (8).

2. A top rain shower device for sealing test according to claim 1, characterized in that: The water outlet end of the water collector (6) is connected to the water outlet pipe (5).

3. The top rain shower device for sealing test according to claim 1, characterized in that: A solenoid valve (7) is provided at the connection between the water collector (6) and each spray pipe group.

4. The top rain shower device for sealing test according to claim 1, characterized in that: A check valve is provided at the water outlet end of the nozzle (9).

5. The top rain shower device for sealing test according to claim 1, characterized in that: The water inlet end of the nozzle (9) is provided with a proportional regulating valve (3) and a pressure sensor (2) in sequence along the water flow direction.

6. A method for operating the top rain shower device for sealing test according to any one of claims 1 to 5, characterized in that: It includes the following steps: Step 1: Connect the shower platform (8) of the shower rack to the lifting platform by means of a steel cable hoist; Step 2: Set the rain duration, rainfall intensity and range; Step 3: Turn on the main switch of the branch water supply, and then read the branch water supply pressure and flow; Step 4: Open the on / off valves of each branch spray pipe group and maintain the pressure of the spray pipe group; Step 5: If the target rain intensity needs to be changed during the test, the pipeline pressure and the height of the lifting platform are changed using the PID method to obtain the target rain intensity; Step 6: When the set rain time is reached, turn off the main water supply switch to end the rain test.

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