Composite environment test device integrating salt mist, ultraviolet ray and rainwater simulation functions

Abstract

The invention provides a composite environment test device integrating salt mist, ultraviolet ray and rainwater simulation functions, which comprises a base, a shading box body is arranged above the base, sliding grooves are formed in two ends of the side wall of the box body, sliding doors are embedded in the sliding grooves, the sliding doors slide along the directions of the sliding grooves, and the sliding doors are connected with the base. A high-pressure gas supply device, a sodium chloride solution supply device, a controller and a storage battery are arranged at the top of the box body, a lamp tube frame, a sample frame, a swing type sprinkler and the like are arranged in the box body, and the storage battery is connected to the sodium chloride solution supply device, the high-pressure gas supply device, the swing type sprinkler and the lamp tube frame and supplies power. The accelerated aging test device for simulating ultraviolet salt mist and acid rain multi-environmental factor compounding can more truly reflect the composite aging effect of ultraviolet, salt mist and acid rain on an outer coating of a steel structure under the offshore atmosphere condition, and has great significance in aging mechanism research and service life prediction of the coating of the offshore atmosphere steel structure part.

Description

Technical Field

[0001] The invention relates to the technical field of salt spray test devices, in particular to a composite environment test device integrating salt spray, ultraviolet rays and rain simulation functions. Background Art

[0002] With the continuous improvement of my country's high-speed railway construction, the number of high-speed railway passenger stations is also increasing. In coastal areas, the coatings of a large number of steel structures used in high-speed railway passenger stations are affected by marine salt spray, acid rain corrosion, ultraviolet radiation, etc., and their service life will be greatly reduced. Therefore, it is particularly important to study the aging of anti-corrosion coatings of steel structures in offshore atmosphere.

[0003] In traditional experiments, corrosion tests on steel structures are usually conducted under single environmental conditions, such as salt spray, ultraviolet radiation, or rain simulation. These single-environment simulation tests may not accurately reflect the corrosion conditions of the material in actual use, and need to be conducted on a variety of different test equipment, which increases the complexity of the experiment.

[0004] Publication number "CN108896475A" discloses a UV-salt spray composite accelerated test device that simulates multiple environmental factors. The above-mentioned accelerated test method combines functions such as UV irradiation, salt spray, temperature control, and humidity monitoring, and conducts experiments in the same test chamber to simulate the accelerated corrosion effect of environmental factors in the offshore atmospheric environment on steel structures.

[0005] Although the above-mentioned UV-salt spray composite accelerated test device simulating multiple environmental factors provides salt spray and UV factor simulation tests, it does not design a rain test to simulate the accelerated corrosion effect of acid rain on coated steel structures under wind. Acidic substances such as sulfur dioxide (SO2) and nitrogen oxides (NOX) contained in acid rain will combine with water vapor to form an acidic solution, causing corrosion of steel structures.

[0006] Secondly, in the above-mentioned ultraviolet salt spray composite accelerated test device simulating multiple environmental factors, the relative position between the sample and the ultraviolet lamp remains unchanged, which will cause the degree of radiation received by the sample to vary with the position.

[0007] Therefore, there is an urgent need for a composite environmental testing device that integrates salt spray, ultraviolet and rain simulation functions. Summary of the invention

[0008] In view of this, in order to improve the accuracy of the test and simplify the experimental process, the present invention proposes a composite environmental test device that integrates salt spray, ultraviolet and rain simulation functions, aiming to overcome the limitations of existing methods. The specific technical solution is as follows:

[0009] A composite environmental testing device with salt spray, ultraviolet and rain simulation functions, comprising a base, a light-shielding box body is arranged above the base, slide grooves are opened at both ends of the side walls of the box body, a sliding door is embedded in the slide groove, and the sliding door slides along the direction of the slide groove, a high-pressure gas supply device, a sodium chloride solution supply device, a controller and a battery are arranged on the top of the box body, a lamp tube rack, a sample rack, a pendulum showerhead and a salt spray generating device are arranged inside the box body, the battery is connected to the sodium chloride solution supply device, the high-pressure gas supply device, the pendulum showerhead and the lamp tube rack and provides power supply, and an exhaust port is arranged at the bottom of the box body, and the exhaust port is connected to the base.

[0010] Furthermore, the inner walls on both sides of the box are connected to the lamp tube rack through a spherical rotating device, the lamp tubes are evenly arranged on the lamp tube rack, and the lamp tubes are connected to a controller.

[0011] Furthermore, a salt mist generating device is provided on the upper part of the interior of the box, and the salt mist generating device corresponds to the non-contact upper part of the middle position of the two sample racks. The two sample racks are symmetrically arranged about the salt mist generating device, and a radiometer is provided at the middle position of each sample rack 7; a temperature sensor is provided at the lower end of the sample rack.

[0012] Furthermore, the box body includes a quartz box, a sealed top cover, a connector and an exhaust port. An openable and closable sealed top cover is provided on the top of the quartz box, and a connector is provided on the sealed top cover. The top of the salt spray generating device is connected to a feed pipe, and the feed pipe is connected to the connector.

[0013] Furthermore, the sodium chloride solution supply device provides sodium chloride solution to the box body, and the sodium chloride solution supply device includes a first liquid heating and insulation box and a flow pump. The first liquid heating and insulation box is provided with a liquid adding pipe, the liquid inlet of the flow pump is connected to the bottom of the inner cavity of the first liquid heating and insulation box, and the liquid outlet of the flow pump is connected to the connecting head.

[0014] Furthermore, the high-pressure gas supply device includes an air purifier, an air compressor, an air heater and a flow valve with a pressure gauge; the air purifier, air compressor and air heater are connected in sequence, and the air heater is connected to the connector through the flow valve. The air is first filtered by the air purifier and then enters the air compressor. The air compressor compresses the gas and then sends it to the air heater. After being heated by the air heater, the air flows through the flow valve and enters the salt spray generating device. The maximum heating temperature of the air heater is 90°C.

[0015] Furthermore, the pendulum shower includes a shower pipe and a second liquid heating and insulation box, the second liquid heating and insulation box is filled with sodium bisulfate solution, and the pendulum shower has a built-in flow pump; the sodium bisulfate solution is delivered to the shower pipe through the flow pump.

[0016] Furthermore, the outer surface of the box is made of stainless steel, which protects the parts in the box and blocks ultraviolet light from irradiating to the external environment.

[0017] Furthermore, the salt mist generating device is a salt mist generator, and the salt mist generator is made of glass material, and the glass material has an anti-corrosion effect.

[0018] Furthermore, the temperature sensor is a titanium corrosion-resistant temperature sensor with a working range of 0-90°C and a sensitivity of 0.5°C.

[0019] The above technical solution has the following beneficial effects:

[0020] 1. The present invention simulates the accelerated aging test of multiple environmental factors such as ultraviolet, salt spray and acid rain, wherein the pendulum-type rain test device and the automatically adjustable lamp tube rack can perform the acid rain simulated accelerated aging test; and the relative position of ultraviolet radiation to the sample is changed by setting the adjustable angle and position lamp tube rack to perform the test of the relative position of radiation on the corrosion rate of the sample;

[0021] 2. The accelerated aging test device for simulating multiple environmental factors of ultraviolet, salt spray and acid rain described in the present invention can more realistically reflect the composite aging effects of ultraviolet, salt spray and acid rain on the outer coating of steel structures under offshore atmospheric conditions, which is of great significance for the study of aging mechanism and life prediction of coatings of steel structures in offshore atmospheres. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a stereoscopic diagram of a composite environmental testing device integrating salt spray, ultraviolet and rain simulation functions of the present invention;

[0023] Figure 2 This is a schematic diagram of the exploded structure of a composite environmental testing device integrating salt spray, ultraviolet and rain simulation functions of the present invention;

[0024] Figure 3 It is a cross-sectional view of a composite environmental testing device integrating salt spray, ultraviolet and rain simulation functions of the present invention;

[0025] In the figure:

[0026] 1- Base;

[0027] 2-box body, 21-quartz box, 22-sealed top cover, 23-connector, 24-exhaust port;

[0028] 3- Sliding door;

[0029] 4-high pressure gas supply device, 41-air purifier, 42-air compressor, 43-air heater, 44-flow valve, 45-ventilation cover;

[0030] 5-sodium chloride solution supply device, 51-first liquid heating and insulation box, 52-flow pump;

[0031] 6-lamp tube holder, 61-spherical rotating device, 62-lamp tube;

[0032] 7-sample holder, 71-temperature sensor, 72-radiometer;

[0033] 8-swing type shower, 81-shower pipe, 82-second liquid heating and insulation box;

[0034] 9-salt spray generating device, 91-feeding pipe;

[0035] 10- Controller;

[0036] 11-Battery. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1: See Figure 1 , Figure 2 and Figure 3 A composite environmental testing device with salt spray, ultraviolet and rain simulation functions is shown, comprising a base 1, a light-shielding box 2 is arranged above the base 1, and slide grooves are opened at both ends of the side walls of the box 2, and a sliding door 3 is embedded in the slide groove, and the sliding door 3 slides along the direction of the slide groove. A high-pressure gas supply device 4, a sodium chloride solution supply device 5, a controller 10 and a battery 11 are arranged on the top of the box 2, and a lamp tube rack 6, a sample rack 7, a pendulum shower 8 and a salt spray generating device 9 are arranged inside the box 2. The battery 11 is connected to the sodium chloride solution supply device 5, the high-pressure gas supply device 4, the pendulum shower 8 and the lamp tube rack 6 and provides power supply, and an exhaust port 24 is arranged at the bottom of the box 2, and the exhaust port 24 is connected to the base 1.

[0039] The inner walls of both sides of the box body 2 are connected to the lamp tube rack 6 through a spherical rotating device 61, and the lamp tubes 62 are evenly arranged on the lamp tube rack 6. The lamp tubes 62 are connected to the controller 10. A salt mist generating device 9 is provided on the upper part of the interior of the box body 2. The salt mist generating device 9 corresponds to the non-contact upper part of the middle position of the two sample racks 7. The two sample racks 7 are symmetrically arranged about the salt mist generating device 9, and a radiometer 72 is provided in the middle position of each sample rack 7; a temperature sensor 71 is provided at the lower end of the sample rack 7, and the box body 2 includes a quartz box 21, a sealed top cover 22, a connector 23 and an exhaust port 24. An openable and closable sealed top cover 22 is provided on the top of the quartz box 21. The sealed top cover A connector 23 is provided on 22, the salt spray generating device 9 is connected to the feed pipe 91 above, the feed pipe 91 is communicated with the connector 23, the sodium chloride solution supply device 5 provides sodium chloride solution for the box 2, in this embodiment, the sodium chloride solution configuration can refer to the salt spray test standard (GB / T10125-2021), and can also be configured according to actual experimental requirements. The sodium chloride solution is stored in the first liquid heating and insulation box 51 in the sodium chloride solution supply device 5, and the first liquid heating and insulation box 51 has a built-in heater (heating maximum temperature 90°C); the sodium chloride solution is delivered to the salt spray generating device 9 through a flow pump 5252, and the flow rate of the flow pump 5252 is 19-65ml / min.

[0040] The sodium chloride solution supply device 5 includes a first liquid heating and insulation box 51 and a flow pump 52. The first liquid heating and insulation box 51 is provided with a liquid adding pipe. The liquid inlet of the flow pump 52 is connected to the bottom of the inner cavity of the first liquid heating and insulation box 51, and the liquid outlet of the flow pump 52 is connected to the connector 23. The high-pressure gas supply device 4 includes an air purifier 41, an air compressor 42, an air heater 43 and a flow valve 44 with a pressure gauge; the air purifier 41, the air compressor 42, and the air heater 43 are connected in sequence, and the air heater 43 is connected to the connector 23 through the flow valve 44. The air is first filtered by the air purifier 41 and then enters the air compressor 42. The air compressor 42 compresses the gas and then sends it to the air heater 43. After the air is heated by the air heater 43, it flows through the flow valve 44 and enters the salt spray generating device 9. The maximum heating temperature of the air heater 43 is 90°C. In this embodiment, a breathable cover is provided at the end of the air purifier 41.

[0041] The pendulum shower 8 includes a shower pipe 81 and a second liquid heating and heat preservation box 82, wherein the second liquid heating and heat preservation box 82 is filled with a sodium bisulfate solution, and the pendulum shower 8 has a built-in flow pump 52; the sodium bisulfate solution is delivered to the shower pipe 81 through the flow pump 52, and the outer surface of the box body 2 is made of stainless steel. The outer surface of the stainless steel protects the various parts in the box body 2 and blocks ultraviolet light from irradiating to the external environment. The salt mist generating device 9 is a salt mist generator, and the salt mist generator is made of glass material, which has an anti-corrosion effect.

[0042] The temperature sensor 71 is a titanium corrosion-resistant temperature sensor 71 with a working range of 0-90°C and a sensitivity of 0.5°C.

[0043] The salt mist quartz box 2121 is used to prevent the escape of salt mist. The temperature in the quartz box 21 is controlled at 30°C-60°C. In addition, the salt mist deposition rate is 0.5-3ml / h·80cm2.

[0044] In this embodiment, the controller 10 can monitor and display the irradiation intensity, the salt spray chamber ambient temperature, and the black mark temperature in real time; can control the flow rate of the sodium chloride solution and the pressure of the high-pressure gas; can control the sodium chloride solution supply device 5 and the high-pressure gas supply device 4 to adjust the heating temperature in real time so that the temperature in the salt spray chamber is constant (fluctuation ≤ 1°C), and the lamp 62 can select an iodine gallium lamp, a mercury lamp, or other lamps according to experimental needs;

[0045] The angle-adjustable lamp tube rack 6 can adjust the relative angle between the parallel light emitted by the lamp tube 62 and the sample, and can be automatically adjusted through the controller 10; the lamp tube rack 6 can also adjust the emission height of the lamp tube 62 through the spherical rotating device 61, i.e., the spherical rotator; by adjusting the height of the lamp tube rack 6 and its distance from the salt spray quartz box 21, the irradiation intensity can be continuously changed within a certain range.

[0046] The pendulum shower 8 provides a rain test for the equipment; the second liquid heating and insulation box 82 can heat and insulate the sodium bisulfate solution, and the specific storage temperature can be configured according to the actual experimental requirements; the pendulum shower 8 has a built-in flow pump 52; the sodium bisulfate solution is delivered to the shower pipe 81 through the flow pump 52; the shower flow rate of the shower pipe 81 can refer to the military equipment laboratory environmental test method (GJB150.8A-2009), and can also be configured according to the actual experimental situation;

[0047] The salt mist generating device 9, i.e., the salt mist generator, is an atomizer made of glass material. The glass material can avoid corrosion;

[0048] The temperature sensor 71 is made of titanium corrosion-resistant temperature sensor 71 to avoid corrosion, with a working range of 0-90°C and a sensitivity of 0.5°C;

[0049] The sample holder 7 is a detachable sample holder 7, which can apply bending stress to the coating sample;

[0050] The irradiance meter 72 measures the irradiation intensity on the sample surface, and can select the ultraviolet wavelength test range and peak wavelength (a.λ=

[0051] 375-475nm, λp=420nm; b.λ=320-400nm, λp=365nm), measuring range 0-50W / m2 / nm.

[0052] In the actual application process:

[0053] First, prepare the sample. The sample is prepared according to ISO9227-2012 to prepare the steel structure coating sample. The sample size is 150mm×100mm×1mm. Before the experiment, debug the various parameters of the equipment:

[0054] The controller 10 is used to control the switch of the lamp 62 on the lamp rack 6 and the light intensity of the lamp 62; secondly, the controller 10 can also control the sodium chloride solution supply device 5, the high-pressure gas supply device 4 and the pendulum shower 8; in this embodiment, the controller 10 adopts a single-chip microcomputer to realize the control of multiple electrical components.

[0055] By starting the controller 10 to control the lamp tube 62, the first liquid heating and insulation box 51, the second liquid heating and insulation box 82 and the air heater 43, the generated salt mist temperature is the same as the experimental set ambient temperature; at the same time, the ultraviolet light intensity emitted by the lamp tube 62 meets the requirements.

[0056] Secondly, the light irradiation angle can be adjusted through the lamp tube holder 6, and the angle of sample placement can be adjusted through the sample holder 7.

[0057] During the experiment, open the sliding door 3 and the sliding door 3 of the salt spray quartz box 21; place the sample on the sample rack 7, and then adjust the angle of the lamp rack 6 according to the experimental requirements; and adjust the sample rack 7 so that the deflection of the sample is 5mm. After all the samples are installed, control each device through the controller 10, input parameters, and conduct the experiment.

[0058] During the experiment, the exhaust hole at the bottom of the installation box 2 is discharged through the bottom of the box 2 and connected to the atmosphere; the air pressurizing device 4 continuously pressurizes the air pressure above the box 2 so that the air pressure is equal to 1 atmosphere; therefore, when the salt mist is sprayed in, the pressure in the upper and lower cavities of the high-purity quartz box 21 is uniform, which facilitates the discharge of excess salt mist.

[0059] During the experiment, before conducting the rain test, the salt mist generating device 9 and the sodium chloride solution supply device 5 need to be turned off through the controller 10; then the air pressurizing device is turned on to remove excess salt mist; finally, the pendulum shower 8 is turned on through the controller 10, the parameters are adjusted, and the pendulum shower 8 starts to move.

[0060] The composite environmental testing device of the present invention integrates the functions of simulating salt fog, ultraviolet rays and rainwater, and overcomes the limitations of the existing methods.

[0061] The basic principles and main features of the present invention are described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. A composite environmental testing device integrating salt spray, ultraviolet and rain simulation functions, characterized in that: The invention comprises a base (1), a light-shielding box (2) is arranged above the base (1), a slide groove is opened at both ends of the side wall of the box (2), a sliding door (3) is embedded in the slide groove, and the sliding door (3) slides along the direction of the slide groove, a high-pressure gas supply device (4), a sodium chloride solution supply device (5), a controller (10) and a storage battery (11) are arranged on the top of the box (2), a lamp tube rack (6), a sample rack (7), a pendulum shower (8) and a salt mist generating device (9) are arranged inside the box (2), the storage battery (11) is connected to the sodium chloride solution supply device (5), the high-pressure gas supply device (4), the pendulum shower (8) and the lamp tube rack (6) and provides power, and an exhaust port (24) is arranged at the bottom of the box (2), and the exhaust port (24) is connected to the base (1).

2. A composite environmental testing device integrating salt spray, ultraviolet and rain simulation functions according to claim 1, characterized in that: The inner walls on both sides of the box body (2) are connected to a lamp tube rack (6) via a spherical rotating device (61); lamp tubes (62) are evenly arranged on the lamp tube rack (6); and the lamp tubes (62) are connected to a controller (10).

3. A composite environmental testing device integrating salt spray, ultraviolet and rain simulation functions according to claim 2, characterized in that: A salt mist generating device (9) is provided on the upper part of the interior of the box (2), and the salt mist generating device (9) corresponds to the non-contact upper part of the middle position of the two sample racks (7). The two sample racks (7) are symmetrically arranged with respect to the salt mist generating device (9), and a radiometer (72) is provided at the middle position of each sample rack (7); and a temperature sensor (71) is provided at the lower end of the sample rack (7).

4. The composite environmental testing device integrating the functions of simulating salt spray, ultraviolet rays and rainwater according to claim 1, characterized in that: The box body (2) comprises a quartz box (21), a sealing top cover (22), a connector (23) and an exhaust port (24); an openable and closable sealing top cover (22) is arranged on the top of the quartz box (21); a connector (23) is arranged on the sealing top cover (22); the top of the salt mist generating device (9) is connected to a feed pipe (91); and the feed pipe (91) is in communication with the connector (23).

5. The composite environmental testing device integrating the functions of simulating salt spray, ultraviolet rays and rainwater according to claim 1, characterized in that: The sodium chloride solution supply device (5) provides the box body (2) with sodium chloride solution, and comprises a first liquid heating and heat preservation box (51) and a flow pump (52). The first liquid heating and heat preservation box (51) is provided with a liquid adding pipe, the liquid inlet of the flow pump (52) is connected to the bottom of the inner cavity of the first liquid heating and heat preservation box (51), and the liquid outlet of the flow pump (52) is connected to the connector (23).

6. The composite environmental testing device integrating the functions of simulating salt spray, ultraviolet rays and rainwater according to claim 1, characterized in that: The high-pressure gas supply device (4) comprises an air purifier (41), an air compressor (42), an air heater (43) and a flow valve (44) with a pressure gauge; the air purifier (41), the air compressor (42) and the air heater (43) are connected in sequence; the air heater (43) is connected to the connector (23) via the flow valve (44); the air is first filtered by the air purifier (41) and then enters the air compressor (42); the air compressor (42) compresses the gas and then sends it to the air heater (43); the air is heated by the air heater (43) and then flows through the flow valve (44) into the salt mist generating device (9); the maximum heating temperature of the air heater (43) is 90°C.

7. The composite environmental testing device integrating the functions of simulating salt spray, ultraviolet rays and rainwater according to claim 1, characterized in that: The pendulum shower (8) comprises a shower pipe (81) and a second liquid heating and heat preservation box (82), wherein the second liquid heating and heat preservation box (82) contains a sodium bisulfate solution, and the pendulum shower (8) has a built-in flow pump (52); the sodium bisulfate solution is delivered to the shower pipe (81) through the flow pump (52).

8. A composite environmental testing device integrating salt spray, ultraviolet and rain simulation functions according to any one of claims 1 to 3, characterized in that: The outer surface of the box body (2) is made of stainless steel, and the outer surface of the stainless steel protects various parts in the box body (2) and blocks ultraviolet light from irradiating to the external environment.

9. The composite environmental testing device integrating the functions of simulating salt spray, ultraviolet rays and rainwater according to claim 1, characterized in that: The salt mist generating device (9) is a salt mist generator, and the salt mist generator is made of glass material, which has an anti-corrosion effect.

10. The composite environment test device integrating salt spray, ultraviolet and rain simulation functions according to claim 3, characterized in that: The temperature sensor (71) is a titanium corrosion-resistant temperature sensor (71) with a working range of 0-90°C and a sensitivity of 0.5°C.

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