A multifunctional composite environmental testing device

Abstract

A multifunctional composite environment test device is composed of a main box, a functional box and a control system. A salt spray test system, a damp heat test system, a UV test system, a spray test system and a wetting test system are arranged in the main box and the functional box. The device can provide a composite environment of nine factors, namely, salt spray, damp heat, drying, high temperature, low temperature, spraying, UV, dry-wet alternation and baking. Through the coupling design and coupling control of the test box, composite tests and superposition cycle tests of the above-mentioned various functions can be carried out. The device includes a mobile rain matrix, a telescopic humidity measurement system, a transmission dry-wet alternation system and the like to realize a variety of composite environments, effectively avoiding mutual interference and cross-contamination problems between the combinations of various factors.

Description

Technical Field

[0001] The invention relates to a multifunctional composite environment testing device, belonging to the field of new material service performance testing. Background Art

[0002] Environmental test chambers are accelerated test devices used to simulate indoor environments. They are used to study the corrosion and aging behaviors and mechanisms of materials and products in environments such as use and storage. Compared with natural environmental tests, they can obtain a large amount of data in a short period of time, and thus have been widely used. The main environmental test chambers include salt spray test chambers, temperature and humidity test chambers, immersion test chambers, weathering test chambers, etc.

[0003] However, the above-mentioned environmental chamber can only meet the accelerated test of a single corrosion aging factor. Compared with the ever-changing natural environment, the investigation of a single factor is not enough to represent the results of the natural environment, that is, the correlation between the environmental test of a single factor and the actual use environment is relatively poor. Therefore, in recent years, people have tried to use multi-factor tests to examine the performance of products and materials, such as salt spray, wet heat combination test, salt spray, light combination test, ultraviolet, immersion combination test, etc.; these combination tests require the use of different test equipment or devices, which brings great uncertainty to the test process and test results. Therefore, a multi-factor composite environmental chamber is needed to integrate these functions.

[0004] In recent years, there are also some commercial test chambers for multi-factor composite environmental chambers, but they are generally limited to salt dry-wet composite test chambers, or customized environmental test chambers with a combination of certain factors. With the development of the new materials industry, there is an urgent need for rapid screening of the service performance of new materials. In addition, the multi-factor simulation accelerated test method is a method that is still under development, so it is often necessary to conduct a large number of screening and tests on different materials and products before it can be established, and the existing environmental test chambers are not sufficient to provide a screening environment. Moreover, in the existing composite environmental chamber, it is not possible to implement parallel tests of multiple combined environments in one chamber, and parallel tests help to obtain multiple test results at the same time during the test screening process, greatly shortening the test time. At the same time, the existing composite environmental test chambers do not avoid cross-contamination problems between the various combinations of factors, such as the influence of salt spray on temperature and humidity measurement, salt spray contamination of the immersion solution, contamination of spray droplets between combination switching, and corrosion of the evaporator by the contaminated medium. Summary of the invention

[0005] In view of the above problems in the prior art, the present invention provides a nine-factor composite test chamber including salt spray, damp heat, drying, high temperature, low temperature, spraying, ultraviolet, dry-wet alternation, and baking. Through the coupling design and coupling control of the test chamber, composite tests and superimposed cycle tests of the above-mentioned various functions can be carried out.

[0006] To achieve the above object, the present invention includes the following technical solutions:

[0007] A multifunctional composite environment test device, which is composed of a main box 1, a functional box 2 and a control system 3. The main box and the functional box are provided with a salt spray test system, a damp heat test system, an ultraviolet test system, a spray test system and a wetting test system;

[0008] The main box 1 is composed of a test area 5 and a circulation area 8, a partition 102 is provided between the two areas, and a pneumatic damper 13 is provided on the partition; the top 101 of the test area 5 is composed of two slopes, and a drainage pipe is installed at the bottom;

[0009] The salt spray test system includes an atomizing nozzle 18, a salt spray titanium heating tube 4, a salt water tank 231, a pressure tank 232 and a spray solenoid valve 233; the atomizing nozzle 18 is installed on the top of the test area 5; a plurality of salt spray titanium heating tubes 4 are arranged in parallel at the bottom of the test area 5; the salt water tank 231, the pressure tank 232 and the spray solenoid valve 233 are placed in the function box 2; the pressure tank 232 is connected to the atomizing nozzle 18 in the main box through an air pipe, and the spray solenoid valve 233 is arranged on the air pipe; the salt water tank 231 is connected to the atomizing nozzle 18 through a siphon; the spray solenoid valve 233 and the salt spray titanium heating tube 4 are respectively connected to the control system 3;

[0010] The wet heat test system includes a titanium alloy heating tube 12, a titanium alloy evaporator 11, a titanium alloy humidifier 10, a circulating fan 9, a temperature and humidity sensor 19, a compressor unit 241 and a pure water tank 242; the titanium alloy heating tube 12, the titanium alloy evaporator 11, the titanium alloy humidifier 10 and the circulating fan 9 are located in the circulation area 8 of the main box 1; the temperature and humidity sensor 19 is installed in the circulation area 8, and its probe can pass through the partition 102 and move between the test area 5 and the circulation area 8; the compressor unit 241 and the pure water tank 242 are placed in the functional box 2; the pure water tank 242 is connected to the titanium alloy humidifier 10 through a water pipe; each device in the wet heat test system is connected to the control system 3 through a control line;

[0011] The ultraviolet test system includes an ultraviolet lamp tube 14, a UV probe 15 and an ultraviolet power regulating device 261; a plurality of ultraviolet lamp tubes 14 are arranged in parallel on the two side walls of the test area 5, the UV probe 15 is arranged on the side wall of the test area 5, and the ultraviolet power regulating device 261 is arranged in the function box 2 or the circulation area 8; the ultraviolet lamp tube 14 is connected to the ultraviolet power regulating device 261; the UV probe 15 and the ultraviolet power regulating device 261 are respectively connected to the control system 3;

[0012] The spray test system includes a spray pipeline 161, a spray solution tank 251, a spray solenoid valve 252, a water pump 253, a water receiving tray 254 and a horizontal moving device 255; the spray pipeline 161 is a multi-drain pipe that is interconnected, and a plurality of rain nozzles 162 are arranged at the bottom of the water pipe; the spray pipeline 161 is connected to the horizontal moving mechanism 255, and moves between the test area 5 and the function box 2 under the action of the horizontal moving mechanism 255. When entering the test area 5, the spray pipeline is located at the test area 5. The top of the test area 5; the water receiving tray 254 is located below the horizontal moving mechanism 255 at the top of the function box 2; the spray solution box 251, the spray solenoid valve 252 and the water pump 253 are arranged in the function box 2, the spray solution box 251 is installed with the water pump 253, the water pump 253 is connected to the spray pipeline 161 through a water pipe, and the spray solenoid valve 252 is arranged on the water pipe; the spray solenoid valve 252, the water pump 253 and the horizontal moving device 255 are connected to the control system 3 through a control line;

[0013] The wetting test system includes a wetting tank 20, a liquid storage tank 271 and a diaphragm pump 272; the wetting tank 20 is located in the test area 5, and a heating wire 203 and an infrared baking lamp 202 are arranged on the wetting tank 20; a diaphragm pump 272 is arranged on the liquid storage tank 271, and both are located in the functional box 2; the diaphragm pump 272 is connected to the wetting tank 20 through a water pipe; the heating wire 203, the infrared baking lamp 202 and the diaphragm pump 272 are all connected to the control system 3 through a control line.

[0014] As described above, the multifunctional composite environmental testing device, preferably, the wetting tank 20 is a double-layer structure, the heating wire 203 is located between the double layers, and the infrared baking lamp 202 is located on the upper part of the inner wall of the outer tank; the sample rack 204 is arranged in the inner tank, and the sample rack is installed on the lifting device 201, and is lifted or lowered in the inner tank under the drive of the lifting device.

[0015] As described above, the multifunctional composite environmental testing device, preferably, the wetting test system also includes a cleaning system, which is composed of a pure water tank 273, a water pump 274 and a cleaning pipe. The water pump 274 is arranged on the pure water tank 273, and both are located in the functional box 2. The water pump 274 is connected to the wetting tank 20 through the cleaning pipe.

[0016] As described above, in the multifunctional composite environment testing device, preferably, more than two rows of atomizing nozzles 18 are installed on the top of the testing area 5, and each row can be opened separately.

[0017] As described above, the multifunctional composite environment testing device, preferably, the control system 3 adopts centralized control of an industrial computer + module combination, the module combination includes a salt spray module 302, a rain module 303, an ultraviolet module 304, a wetting module 305 and a temperature and humidity module 306, each module controls the operation of each function separately, and the industrial computer 301 executes serial and parallel functions between the modules.

[0018] The beneficial effects of the present invention are:

[0019] 1. The device integrates nine factors including salt spray, damp heat, drying, high temperature, low temperature, spraying, ultraviolet, dry-wet alternation, and baking in the same test chamber, which can provide switching and combination of multiple environments.

[0020] 2. The mobile rain matrix avoids the influence of residual droplets in the rain test on other factors. The telescopic humidity measurement system avoids the pollution of the humidity sensor by the salt spray factor, which leads to the decrease of humidity measurement accuracy, and helps to extend the overall service life of the equipment. The lifting dry-wet alternating system and cleaning device avoid the pollution of the dry-wet infiltration solution by the salt spray factor, spray factor, etc.

[0021] 3. Through the development of serial and parallel functions between various environmental factors, experiments in multiple environments can be carried out simultaneously in the same box, which improves the applicability and efficiency of the test equipment.

[0022] 4. Zoning control can be achieved based on the test volume and test requirements, which helps to reduce resource consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the multifunctional composite environmental testing device of Example 1.

[0024] Figure 2 It is a structural schematic diagram of the main box in the multifunctional composite environmental testing device of Example 1.

[0025] Figure 3 It is a structural schematic diagram of the functional box in the multifunctional composite environmental testing device of Example 1.

[0026] Figure 4 This is a state diagram of the multifunctional composite environmental testing device of Example 1 when the rain matrix is ​​moved out of the main box.

[0027] Figure 5 It is a structural schematic diagram of the wetting box in the multifunctional composite environmental testing device of Example 1.

[0028] Figure 6 It is a schematic diagram of the control system in the multifunctional composite environmental testing device of Example 1. DETAILED DESCRIPTION

[0029] Example 1 Multifunctional composite environmental testing device

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, in a preferred embodiment of the present invention, the composite environmental test chamber includes a main box 1, a functional box 2 and a control system 3, and a salt spray test system, a wet heat test system, a UV test system, a spray test system and a wetting test system are arranged in the main box and the functional box.

[0031] like Figure 1 and Figure 2 As shown, the main box 1 is composed of a test area 5 and a circulation area 8, and a partition 102 is provided between the two areas, and a pneumatic damper 13 is provided on the partition. The top 101 of the test area 5 is composed of two slopes, and a drain pipe is installed at the bottom. The shell of the main box 1 can adopt a double-layer structure, the outer layer is assembled and formed by SUS304 stainless steel, and the inner layer is welded by TA2 titanium plate. The middle of the two layers is filled with multiple flexible foam insulation layers + environmentally friendly glass fiber insulation, and the bottom of the inner layer is supported by channel steel, and TA2 titanium alloy plates are laid on it.

[0032] like Figure 1 , Figure 2 and Figure 3 and Figure 6 As shown, the salt spray test system includes an atomizing nozzle 18, a salt spray titanium heating tube 4, a salt water tank 231, a pressure tank 232, a spray solenoid valve 233 and a salt spray module 302. The atomizing nozzle 18 is installed on the top of the test area 5. A plurality of salt spray titanium heating tubes 4 are arranged in parallel at the bottom of the test area 5. Figure 3 As shown, the salt water tank 231, the pressure tank 232 and the spray solenoid valve 233 are placed in the function box 2. The pressure tank 232 is connected to the atomizing nozzle 18 in the main box through an air pipe, and the spray solenoid valve 233 is arranged on the air pipe. The salt water tank 231 is connected to the atomizing nozzle 18 through a siphon. The spray solenoid valve 233 and the salt spray titanium heating pipe 4 are respectively connected to the salt spray module 302 in the control system 3.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the wet heat test system includes a titanium alloy heating tube 12, a titanium alloy evaporator 11, a titanium alloy humidifier 10, a circulating fan 9, a temperature and humidity sensor 19, a compressor unit 241, a pure water tank 242 and a temperature and humidity module 306. Figure 1 and Figure 2 As shown, the titanium alloy heating tube 12, the titanium alloy evaporator 11, the titanium alloy humidifier 10 and the circulating fan 9 are located in the circulation area 8 of the main box 1. The temperature and humidity sensor 19 is installed in the circulation area 8, and its probe can be extended and moved between the test area 5 and the circulation area 8 through the partition 102. Figure 3 As shown, the compressor unit 241 and the pure water tank 242 are placed in the functional box 2. The pure water tank 242 is connected to the titanium alloy humidifier 10 through a water pipe. Each device in the above-mentioned wet heat test system is connected to the control system 3 through a control line.

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the ultraviolet test system includes an ultraviolet lamp 14, a UV probe 15, an ultraviolet power regulating device 261 and an ultraviolet module 304. A plurality of ultraviolet lamps 14 are arranged in parallel on the two side walls of the test area 5, and the UV probes 15 are respectively arranged on the two side walls. The ultraviolet power regulating device 261 is arranged in the function box 2. The ultraviolet lamp 14 is connected to the ultraviolet power regulating device 261. The UV probe 15 and the ultraviolet power regulating device 261 are respectively connected to the ultraviolet module 304 in the control system 3.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the spray test system includes a spray pipeline 161, a spray solution tank 251, a spray solenoid valve 252, a water pump 253, a water receiving tray 254, a horizontal moving device 255 and a shower module 303. The spray pipeline 161 is a multi-drain pipe that is interconnected, and a plurality of shower nozzles 162 are arranged at the bottom of the water pipe. The spray pipeline 161 is connected to the horizontal moving mechanism 255, and moves between the test area 5 and the functional box under the action of the horizontal moving mechanism 255. Figure 1 As shown in the figure, the spray pipe is located at the top of the main box when it enters the main box. Figure 4 As shown, the spray pipe is located at the top of the function box when it is moved out of the main box. The water receiving tray 254 is located below the horizontal moving mechanism 255 at the top of the function box 2. Figure 3 As shown, a spray solution tank 251, a spray solenoid valve 252 and a water pump 253 are arranged in the function box 2. The water pump 253 is installed on the spray solution tank 251, and the water pump 253 is connected to the spray pipeline 161 through a water pipe, and a spray solenoid valve 252 is arranged on the water pipe. The spray solenoid valve 252, the water pump 253 and the horizontal moving device 255 are connected to the shower module 303 in the control system 3 through a control line.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the wetting test system includes a wetting tank 20, a liquid storage tank 271, a diaphragm pump 272 and a wetting module 305. The wetting tank 20 is located in the test area 5. Figure 5 As shown, the wetting tank 20 is a double-layer structure, a heating wire 203 is arranged between the double layers, and an infrared heating lamp 202 is arranged on the upper part of the inner wall of the outer tank. The inner tank has a sample rack 204, which is installed on a lifting device 201 and can be raised or lowered in the inner tank under the drive of the lifting device. Figure 3As shown, a diaphragm pump 272 is provided on the liquid storage tank 271, and both are located in the function box 2. The diaphragm pump 272 is connected to the wetting tank 20 through a water pipe. The wetting test system also includes a cleaning system, which is composed of a pure water tank 273, a water pump 274 and a cleaning pipe. A water pump 274 is provided on the pure water tank 273, and both are located in the function box 2, and the water pump 274 is connected to the wetting tank 20 through a cleaning pipe. The heating wire 203, the infrared baking lamp 202, the diaphragm pump 272 and the water pump 274 are all connected to the wetting module 305 in the control system 3 through a control line.

[0037] like Figure 6 As shown, the control system 3 adopts centralized control of industrial computer + module combination, and the module combination includes salt spray module 302, rain module 303, ultraviolet module 304, wetting module 305 and temperature and humidity module 306. Each module controls the operation of each function separately, and the industrial computer 301 performs serial and parallel functions between modules. The control functions of the entire control system 3 include: real-time display of the test temperature, humidity, rain, light, dry-wet alternation, etc. of all test modules; setting input and controlling parameters such as laboratory temperature, humidity, rain pressure and flow, light intensity, and weekly immersion cycle; compiling and storing the alternating programs of temperature, humidity, rain, light, and weekly immersion of each laboratory; displaying, recording, and saving parameters such as temperature, humidity, rain, light, and weekly immersion of the laboratory in the form of tables or curves; displaying system faults, protection status, etc.

[0038] The application of this multifunctional composite environmental test device can realize the following test functions:

[0039] 1. Salt spray function

[0040] The prepared salt solution is placed in the salt water tank 231, and enters the atomizing nozzle 18 through the siphon. After the compressed air is filtered and pressure-regulated, it enters the atomizing nozzle 18 after heating and moistening through the pressure tank 232. The salt water and the compressed air are mixed at the atomizing nozzle 18 to form a salt mist spray. The opening of the salt mist can be controlled by the spray solenoid valve 233. The salt spray titanium heating tube 4 at the bottom of the test area 5 quickly heats the entire main box to maintain the temperature required for the salt spray test. Through the branch line control, the salt spray functions of the left and right parts of the main test box can be controlled separately. The salt spray module in the control system 3 can control the box temperature, pressure tank temperature, salt spray type, spray time, etc.

[0041] 2. Moisture and heat function

[0042] The titanium alloy heating tube 12 in the circulation area 8 heats the air. The compressor unit 241 in the functional box 2 and the titanium alloy evaporator 11 in the circulation area 8 are coupled to cool and dehumidify the air. The titanium alloy humidifier 10 in the circulation area 8 is used for humidification. The circulation fan 9 in the circulation area 8 is used to fully circulate the air in the circulation area. The automatic telescopic temperature and humidity sensor 19 measures the temperature and humidity of the main box. The control system 3 couples and controls the operation of the above-mentioned parts according to the set temperature and humidity requirements, so that the temperature and humidity are fully adjusted in the circulation area 8, and then the temperature and humidity are evenly distributed to the test area 5 through the pneumatic damper 13 in the circulation area to achieve the required temperature and humidity. The temperature and humidity module in the control system 3 can control temperature, humidity, wet and hot time, alternating wet and hot, etc.

[0043] 3. UV function

[0044] The UV probe 15 in the test area 5 monitors the intensity of the ultraviolet light, and the ultraviolet power adjustment device 261 adjusts the power of the ultraviolet lamp 14 to maintain the set irradiance according to the instructions of the controller 3. The ultraviolet module in the control system 3 can control the irradiance and ultraviolet irradiation time.

[0045] 4. Spray function

[0046] The prepared spray solution is placed in the spray solution tank 251, transported to the spray pipeline 161 in the test area 5 by the water pump 253, and then sprayed onto the surface of the sample in the form of a solid water line through the shower nozzle 162. Figure 2 As shown, the spray pipeline 161 is located above the water receiving tray 254 of the function box 2; when the control system 3 issues a spray command, as shown in FIG. Figure 1 As shown, the spray pipeline 161 is pushed into the test area 5 by the horizontal moving mechanism 255. The spray module in the control system 3 can control the flow rate and time.

[0047] 5. Wetting function

[0048] The lifting device 201 on the side wall of the wetting tank 20 drives the sample rack 204 to move up and down, the diaphragm pump 272 delivers the solution in the liquid storage tank 271 to the wetting tank 20, the infrared baking lamp 202 bakes the sample, and the heating wire between the double layers of the wetting tank 20 heats the wetting tank 20. The time of the infiltration cycle, the number of cycles and the baking time are executed according to the instructions of the control system 3. Before each wetting function is executed, the control system will issue a cleaning instruction to input pure water from the pure water tank 273 to the cleaning pipe 203 of the wetting tank 20 via the water pump 274 to clean the wetting tank 20. The wetting module in the control system 3 can control the time of the infiltration cycle, the number of cycles, the baking time, etc.

[0049] 6. Serial / parallel test: The serial / parallel test is realized by the control of the industrial computer 301. The function modules to be performed are selected from the above 1 to 5 functions. The serial test can be performed by superimposing the sequential test of each module. The parallel test can be performed by selecting more than one module in one step. The test time, number of cycles, and cycle order can be set separately. For example, salt spray → ultraviolet → spray serial test: the cycle mode is set in the control system as salt spray 2h → ultraviolet 2h → spray 2h, every 6h is a cycle, and the number of cycles is 30 times. At the beginning of the test: execute the salt spray function for 2h, then execute the ultraviolet function for 2h, and then execute the spray function for 2h, so as to complete one cycle. The test ends after 30 cycles. Salt spray + spray parallel test: the modules that are started simultaneously in the control system are set as salt spray and spray, and the test time is 8h. At the beginning of the test, in the test area, the salt spray function and the spray function are started at the same time, and the salt spray + spray parallel test is carried out. The test ends after 8h.

[0050] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A multifunctional composite environmental testing device, characterized in that: It is composed of a main box (1), a functional box (2) and a control system (3), wherein the main box and the functional box are provided with a salt spray test system, a damp heat test system, an ultraviolet test system, a spray test system and a wetting test system; The main box (1) is composed of a test area (5) and a circulation area (8), a partition (102) is provided between the two areas, and a pneumatic damper (13) is provided on the partition; the top (101) of the test area (5) is composed of two slopes, and a drainage pipe is installed at the bottom; The salt spray test system comprises an atomizing nozzle (18), a salt spray titanium heating tube (4), a salt water tank (231), a pressure tank (232) and a spray electromagnetic valve (233); the atomizing nozzle (18) is installed at the top of a test area (5); a plurality of salt spray titanium heating tubes (4) are arranged in parallel at the bottom of the test area (5); the salt water tank (231), the pressure tank (232) and the spray electromagnetic valve (233) are placed in a function box (2); the pressure tank (232) is connected to the atomizing nozzle (18) in a main box body through an air pipe, and the spray electromagnetic valve (233) is arranged on the air pipe; the salt water tank (231) is connected to the atomizing nozzle (18) through a siphon; the spray electromagnetic valve (233) and the salt spray titanium heating tube (4) are respectively connected to a control system (3); The wet heat test system comprises a titanium alloy heating tube (12), a titanium alloy evaporator (11), a titanium alloy humidifier (10), a circulating fan (9), a temperature and humidity sensor (19), a compressor unit (241) and a pure water tank (242); the titanium alloy heating tube (12), the titanium alloy evaporator (11), the titanium alloy humidifier (10) and the circulating fan (9) are located in a circulating area (8) of a main box (1); the temperature and humidity sensor (19) is installed in the circulating area (8), and its probe can pass through a partition (102) and move telescopically between a test area (5) and a circulating area (8); the compressor unit (241) and the pure water tank (242) are placed in a functional box (2); the pure water tank (242) is connected to the titanium alloy humidifier (10) through a water pipe; and each device in the wet heat test system is connected to a control system (3) through a control line; The ultraviolet test system comprises an ultraviolet lamp tube (14), a UV probe (15) and an ultraviolet power regulating device (261); a plurality of ultraviolet lamp tubes (14) are arranged in parallel on the two side walls of a test area (5); the UV probe (15) is arranged on the side wall of the test area (5); and the ultraviolet power regulating device (261) is arranged in a function box (2) or a circulation area (8); the ultraviolet lamp tube (14) is connected to the ultraviolet power regulating device (261); the UV probe (15) and the ultraviolet power regulating device (261) are respectively connected to a control system (3); The spray test system comprises a spray pipeline (161), a spray solution tank (251), a spray solenoid valve (252), a water pump (253), a water receiving tray (254) and a horizontal moving device (255); the spray pipeline (161) is a plurality of water pipes interconnected with each other, and a plurality of rain nozzles (162) are arranged at the bottom of the water pipes; the spray pipeline (161) is connected to the horizontal moving mechanism (255), and moves between the test area (5) and the function box (2) under the action of the horizontal moving mechanism (255); when entering the test area (5), the spray pipeline is located in the test area. (5) top; the water receiving tray 254 is located below the horizontal moving mechanism (255) at the top of the function box (2); the spray solution box (251), the spray solenoid valve (252) and the water pump (253) are arranged in the function box (2); the water pump (253) is installed on the spray solution box (251); the water pump (253) is connected to the spray pipeline (161) through a water pipe, and the spray solenoid valve (252) is arranged on the water pipe; the spray solenoid valve (252), the water pump (253) and the horizontal moving device (255) are connected to the control system (3) through a control line; The wetting test system comprises a wetting tank (20), a liquid storage tank (271) and a diaphragm pump (272); the wetting tank (20) is located in a test area (5), and a heating wire (203) and an infrared heating lamp (202) are arranged on the wetting tank (20); a diaphragm pump (272) is arranged on the liquid storage tank (271), and both are located in a function box (2); the diaphragm pump (272) is connected to the wetting tank (20) through a water pipe; the heating wire (203), the infrared heating lamp (202) and the diaphragm pump (272) are all connected to a control system (3) through a control line.

2. The multifunctional composite environment testing device according to claim 1, characterized in that: The wetting tank (20) is a double-layer structure, the heating wire (203) is located between the double layers, and the infrared heating lamp (202) is located on the upper part of the inner wall of the outer tank; the sample rack (204) is arranged in the inner tank, and the sample rack is installed on the lifting device (201), and is lifted or lowered in the inner tank under the drive of the lifting device.

3. The multifunctional composite environment testing device according to claim 1, characterized in that: The wetting test system also includes a cleaning system, which is composed of a pure water tank (273), a water pump (274) and a cleaning pipe. The water pump (274) is arranged on the pure water tank (273). Both are located in the functional box (2). The water pump (274) is connected to the wetting tank (20) through the cleaning pipe.

4. The multifunctional composite environment testing device according to claim 1, characterized in that: More than two rows of atomizing nozzles (18) are installed on the top of the test area (5), and each row can be opened separately.

5. The multifunctional composite environment testing device according to any one of claims 1 to 4, characterized in that: The control system (3) adopts centralized control of an industrial computer + module combination, wherein the module combination includes a salt spray module (302), a rain module (303), an ultraviolet module (304), a wetting module (305) and a temperature and humidity module (306), each module independently controls the operation of each function, and the industrial computer (301) executes serial and parallel functions between the modules.

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