Walk-in alternating salt spray test bin

Abstract

The utility model relates to a step-in alternating salt spray test bin which comprises a box body, the test area is arranged in the box body; the salt spray test device is arranged in the box body and is communicated with the test area; the temperature and humidity control device is mounted on one side of the test area; the heating device is arranged on the inner side wall of the test area, corrosion, aging and other conditions of a test sample in a salt spray environment are simulated through the salt spray test device, the test temperature and humidity are controlled through the temperature and humidity control device, the influence of different environment temperatures and humidity on the test sample is simulated, and the environment temperature during salt spray test is controlled through the heating device. The device can simulate the influence of salt mist on a test sample under different environment temperature conditions, can be used for independent temperature and humidity tests and independent salt mist tests, can also realize alternating test conditions through multi-factor coupling, can simulate and enhance severe natural environment conditions more truly, can quickly detect and test the corrosion resistance of materials, and is accurate in test data.

Description

Technical Field

[0001] The utility model relates to the technical field of salt spray testing, in particular to a walk-in alternating salt spray testing chamber. Background Art

[0002] In order to more realistically simulate the corrosion damage caused to vehicles or military equipment by natural environmental conditions containing sodium chloride pollution, many companies currently place vehicles or equipment in outdoor exposure sites in representative regions of the world for exposure testing, or rent cargo ships to place vehicles on cargo ships and float on the sea for a long time to simulate real environmental conditions for product reliability assessment. This test method has some uncertainties. The corrosion of the same product varies every year over a certain period of time, and the product's use environment is highly uncertain. At the same time, it is impossible to quickly analyze the product's adaptability to certain environmental conditions, and the R&D cost is high and the cycle is relatively long.

[0003] The salt spray test machine is a comprehensive climatic condition test equipment that artificially simulates sodium chloride ion pollution. It can truly simulate the multi-comprehensive environmental test of anti-aging test of materials, parts, and electrical accessories used in coastal areas, port terminals, or items transported by sea, which are exposed to air containing sodium chloride pollution for a long time. For example, the application number CN201720818865.8 discloses a walk-in alternating salt spray test box, which includes a box body and a test room, a spray device, a temperature regulating device, a humidity regulating device, and an electrical device arranged in the box body. The spray device, the temperature regulating device, and the humidity regulating device are all connected to the electrical device by lines. Generally, the functions of traditional controlled salt spray test machines are relatively single, and complex environments cannot be simulated. It is difficult to simulate the real environment, which causes a large error between the data of the material during the test and the data under actual use. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a walk-in alternating salt spray test chamber.

[0005] The purpose of the utility model can be achieved through the following technical scheme: a walk-in alternating salt spray test chamber, comprising a box body; an explosion-proof door installed at the front end of the box body; a test area arranged in the box body; a salt spray test device installed in the box body and connected to the test area, used to provide the salt spray environment required for the test; a temperature and humidity control device installed on one side of the test area, used to provide the temperature and humidity change environment required for the test; a heating device, arranged on the inner wall of the test area, used to increase the ambient temperature in the test area during the salt spray test.

[0006] Preferably, the salt spray test device includes a salt water barrel, a water pump, a mist spray tower, and a saturated barrel. The mist spray tower is installed on the upper part of the inner wall of the test area. A first nozzle is provided in the mist spray tower. A second nozzle is provided at intervals at the bottom of the test area. The first nozzle and the second nozzle are both provided with a water supply pipe and an air supply pipe. The water pump pumps the salt water in the salt water barrel to the first nozzle and the second nozzle through the water supply pipe. The saturated barrel is connected to the first nozzle and the second nozzle through the air supply pipe.

[0007] Preferably, arc-shaped grooves are provided on both sides of the mist spray tower, and adjustment plates for adjusting the size of the salt mist are clamped in the arc-shaped grooves.

[0008] Preferably, the temperature and humidity control device includes a hot and cold chamber, a fan is provided at the top of the hot and cold chamber, a return air outlet is provided at the bottom of the hot and cold chamber, the air outlet of the fan is connected to the test area, a refrigeration module, a heating wire, and a humidifier are installed in the hot and cold chamber, and the mist outlet channel of the humidifier is connected to the hot and cold chamber.

[0009] Preferably, the refrigeration module includes a compressor, a condenser, and an evaporator. One end of the condenser is connected to the compressor, and the other end of the condenser is connected to the evaporator through a multi-way component. The evaporator is connected to the compressor.

[0010] Preferably, the multi-channel component includes a main channel and at least one branch channel, the main channel is connected to a first solenoid valve and an expansion valve, and each branch channel is connected to a second solenoid valve and a capillary tube.

[0011] Preferably, the heating device comprises heating tubes, and the heating tubes are arranged at intervals at the lower part of the inner wall of the test area.

[0012] Preferably, a defogger connected to the test area is provided in the box, the defogger includes a compressed air pipe and an exhaust pipe, one end of the compressed air pipe and the exhaust pipe are both connected to the test area, the other end of the compressed air pipe is connected to an air compressor, and the other end of the exhaust pipe is connected to a salt spray filter.

[0013] Preferably, a salt mist collection port is provided in the test area, and a metering cylinder connected to the salt mist collection port is installed on the box.

[0014] The beneficial effects of the utility model are as follows: the utility model simulates the corrosion, aging and other conditions of the test sample in a salt spray environment through a salt spray test device, controls the test temperature and humidity through a temperature and humidity control device, simulates the influence of different ambient temperatures and humidities on the test sample, controls the ambient temperature during the salt spray test through a heating device, simulates the influence of salt spray on the test sample under different ambient temperatures, can be used for a single temperature and humidity test, a single salt spray test, and can also couple multiple factors to achieve alternating test conditions, can more realistically simulate and enhance harsh natural environment conditions, can quickly detect and inspect the corrosion resistance of materials, and the test data is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0016] Figure 1 The utility model is a structural schematic diagram of a walk-in alternating salt spray test chamber.

[0017] Figure 2 This is another structural schematic diagram of a walk-in alternating salt spray test chamber of the utility model.

[0018] Figure 3 It is a cross-sectional structural schematic diagram of a walk-in alternating salt spray test chamber of the utility model.

[0019] Figure 4 The utility model is a schematic diagram of the structure of a spray tower of a walk-in alternating salt spray test chamber.

[0020] Figure 5 The utility model is a schematic diagram of the refrigeration module structure of a walk-in alternating salt spray test chamber.

[0021] Figure 6 for Figure 2 Partial view at point A in the middle.

[0022] Figure 7 for Figure 3 Partial view at point B in the middle.

[0023] Figure 8 for Figure 1 Partial view at point c in the middle.

[0024] The numbers shown in the figure are as follows: 1. Box; 2. Test area; 3. Test area; 4. Salt spray test device; 401. Saturated barrel; 402. Spray tower; 403. First nozzle; 404. Adjustment plate; 405. Second nozzle; 406. Water supply pipe; 407. Air supply pipe; 5. Temperature and humidity control device; 501. Hot and cold chamber; 502. Compressor; 503. Evaporator; 504. Heating wire; 505. Fan; 506. Return air outlet; 507. Condenser; 508. First solenoid valve; 509. Expansion valve; 510. Second solenoid valve; 511. Capillary tube; 512. Humidifier; 513. Mist outlet channel; 6. Heating device; 601. Heating tube; 7. Demisting device; 701. Compressed air pipe; 702. Mist exhaust pipe; 8. Salt spray collection port. DETAILED DESCRIPTION

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] The following will be combined with specific embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

[0028] See also Figures 1 to 8 As shown, the structure of the utility model is: a walk-in alternating salt spray test chamber, comprising a box body 1; an explosion-proof door 2, installed at the front end of the box body 1; a test area 3, arranged in the box body 1; a salt spray test device 4, installed in the box body 1 and connected with the test area 3, for providing the salt spray environment required for the test; a temperature and humidity control device 5, installed on one side of the test area 3, for providing the temperature and humidity change environment required for the test; a heating device 6, arranged on the inner wall of the test area 3, for raising the ambient temperature in the test area 3 during the salt spray test, specifically, the required test sample is sent into the test area 3, the explosion-proof door 2 is closed, and the test environment required for the test sample is simulated by the salt spray test device 4 and the temperature and humidity control device 5. When conducting the salt spray test, the ambient temperature in the test area 3 can be raised by the heating device 6, which can be used for temperature and humidity test alone, spray test alone, or multiple factors can be coupled to achieve alternating test conditions, which can more realistically simulate and enhance the harsh natural environment conditions, and can quickly detect and inspect the corrosion resistance of the material.

[0029] like Figure 3 , Figure 4 , Figure 6As shown, the salt spray test device 4 includes a salt water barrel, a water pump, a mist spray tower 402, and a saturated barrel 401. The mist spray tower 402 is installed on the upper part of the inner wall of the test area 3. A first nozzle 403 is arranged in the mist spray tower 402. A second nozzle 405 is arranged at intervals at the bottom of the test area 3. The first nozzle 403 and the second nozzle 405 are both provided with a water supply pipe 406 and an air supply pipe 407. The water pump pumps the salt water in the salt water barrel to the first nozzle 403 and the second nozzle 405 through the water supply pipe 406. The saturated barrel 401 is connected with the first nozzle 403 and the second nozzle 405 through the air supply pipe 407. Specifically, when conducting a salt spray test, the salt water in the salt water barrel is pumped to the first nozzle 403 and the second nozzle 405 through the water pump. 405 atomization, at the same time, the saturation barrel 401 is connected to compressed air. The saturation barrel 401 is used to prevent the compressed air from entering the test area 3 to cause temperature fluctuations and changes on the one hand, and to prevent the unsaturated compressed air from causing salt mist crystallization when the first nozzle 403 and the second nozzle 405 perform salt mist spraying on the other hand. The compressed air is heated and humidified in the saturation barrel 401, and then overflows in the form of bubbles to supply the first nozzle 403 and the second nozzle 405. After that, the first nozzle 403 and the second nozzle 405 can spray the salt water in the form of spray, so that the test area 3 simulates the salt mist environment. The water pump is a peristaltic pump, which can ensure that the amount of salt water pumped to the first nozzle 403 and the second nozzle 405 is the same each time.

[0030] like Figure 4 As shown, arc grooves are provided on both sides of the mist spray tower 402, and adjustment plates 404 for adjusting the size of the salt mist are clamped in the arc grooves. Specifically, the adjustment plates 404 are used to adjust the size of the salt mist. The adjustment plates 404 are flipped up to increase the spray volume, and pressed down to reduce the spray volume.

[0031] like Figure 3 As shown, the temperature and humidity control device 5 includes a hot and cold chamber 501, a fan 505 is provided at the upper part of the hot and cold chamber 501, and a return air port 506 is provided at the lower part of the hot and cold chamber 501. The air outlet of the fan 505 is connected to the test area 3. A refrigeration module, a heating wire 504, and a humidifier 512 are installed in the hot and cold chamber. The mist outlet channel 513 of the humidifier 512 is connected to the hot and cold chamber 501. Specifically, the temperature is increased by heating the heating wire 504, and the humidifier 512 sends moisture into the hot and cold chamber through the mist outlet channel 513. In the cavity 501, the humid hot air formed by the mixture of moisture generated by the humidifier 512 and the hot air generated by the heating wire 504 enters the test area 3 through the fan 505 to simulate the humid and hot conditions; the temperature is reduced by the refrigeration module, and the cold air emitted by the refrigeration module is sent from the air outlet to the test area 3 through the fan 505 to the cold air flow in the cold and hot cavity 501. Then, the original air flow in the test area 3 flows back to the cold and hot cavity 501 through the return air port 506 for circulation, thereby improving the uniformity of temperature and humidity in the test area 3.

[0032] like Figure 5As shown, the refrigeration module includes a compressor 502, a condenser 507, and an evaporator 503. One end of the condenser 507 is connected to the compressor 502, and the other end of the condenser 507 is connected to the evaporator 503 through a multi-way component. The evaporator 503 is connected to the compressor 502. Specifically, the compressor 502 sucks in low-temperature, low-pressure refrigerant, compresses it into high-temperature, high-pressure hot gas, and then discharges it into the condenser 507. The high-temperature and high-pressure refrigerant gas dissipates heat through the condenser 507, and the temperature gradually decreases. It is slowly cooled to a normal-temperature, high-pressure saturated steam, and then comes out of the condenser 507. The refrigerant enters the evaporator 503 through the multi-way component, and begins to absorb heat and vaporize in the evaporator 503, thereby reducing the temperature of the evaporator 503 and the surrounding area. The refrigerant then becomes a low-temperature, low-pressure gas. Subsequently, the refrigerant coming out of the evaporator 503 returns to the compressor 502 for circulation. The multi-way component is enabled according to different working conditions, which changes the traditional way of using a thermostat to control the heater to offset the cooling capacity to control the cooling capacity, thereby achieving energy-saving effects, reducing the operating load of the refrigeration compressor 502, reducing the vibration and noise of the equipment, and improving the temperature control accuracy.

[0033] like Figure 5 As shown, the multi-way component includes a main road and at least one branch road. The main road is connected to a first solenoid valve 508 and an expansion valve 509, and each branch road is connected to a second solenoid valve 510 and a capillary tube 511. Specifically, when the first solenoid valve 508 is opened, the refrigerant enters the evaporator 503 through the expansion valve 509, and when the second solenoid valve 510 is opened, the refrigerant enters the evaporator 503 through the capillary tube 511. According to the needs of the working conditions, the second solenoid valves 510 are opened or closed to control the refrigerant entering the evaporator 503, thereby controlling the cooling capacity in the test area 3.

[0034] like Figure 3 Figure 7 As shown, the heating device 6 includes a heating tube 601, and the heating tube 601 is arranged at intervals at the lower part of the inner wall of the test area 3. Specifically, the heating tube 601 is used to increase the temperature in the test area 3 when performing a salt spray test.

[0035] like Figure 1 , Figure 8 As shown, a defogger 7 connected to the test area 3 is provided in the box 1, and the defogger 7 includes a compressed air pipe 701 and a defogging pipe 702. One ends of the compressed air pipe 701 and the defogging pipe 702 are both connected to the test area 3, the other end of the compressed air pipe 701 is connected to an air compressor, and the other end of the defogging pipe 702 is connected to a salt spray filter device. Specifically, after the salt spray test is completed, compressed air is injected into the test area 3 through the compressed air pipe 701, and the salt spray in the test area 3 is sent to the salt spray filter device through the defogging pipe 702 for filtration, and then discharged into the atmosphere.

[0036] like Figure 3 , Figure 7 As shown, a salt mist collecting port 8 is provided in the test area 3, and a metering cylinder connected to the salt mist collecting port 8 is installed on the box body 1. Specifically, the salt mist in the test area 3 enters the metering cylinder through the salt mist collecting port 8, and the amount of spray in the test area 3 is checked through the metering cylinder.

[0037] During specific use, the required test samples are sent into the test area 3, the explosion-proof door 2 is closed, the corrosion, aging and other conditions of the test samples in the salt spray environment are simulated by the salt spray test device 4, the test temperature and humidity are controlled by the temperature and humidity control device 5, and the influence of different ambient temperatures and humidities on the test samples is simulated. The ambient temperature during the salt spray test is controlled by the heating device 6 to simulate the influence of salt spray on the test samples under different ambient temperatures. It can be used for separate temperature and humidity tests and separate salt spray tests, and can also couple multiple factors to achieve alternating test conditions, which can more realistically simulate and enhance harsh natural environment conditions, and can quickly detect and examine the corrosion resistance of materials. When the salt spray test is completed or the test environment is changed, compressed air is injected into the test area 3 through the compressed air pipe 701, and the salt mist in the test area 3 is sent to the salt spray filter equipment through the exhaust pipe 702 for filtration, and then discharged into the atmosphere.

[0038] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the utility model. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the utility model.

Claims

1. A walk-in alternating salt spray test chamber, characterized in that: comprising a box body (1); An explosion-proof door (2) installed at the front end of the box (1); A test area (3) is arranged in the box (1); A salt spray test device (4), installed in the box (1) and connected to the test area (3), used to provide a salt spray environment required for the test; A temperature and humidity control device (5) is installed on one side of the test area (3) and is used to provide a temperature and humidity change environment required during the test; A heating device (6) is arranged on the inner wall of the test area (3) and is used to increase the ambient temperature in the test area (3) during a salt spray test.

2. A walk-in alternating salt spray test chamber according to claim 1, characterized in that: The salt spray test device (4) comprises a salt water barrel, a water pump, a mist spray tower (402), and a saturation barrel (401). The mist spray tower (402) is installed on the upper part of the inner wall of the test area (3). A first nozzle (403) is arranged in the mist spray tower (402). A second nozzle (405) is arranged at intervals at the bottom of the test area (3). The first nozzle (403) and the second nozzle (405) are both provided with a water supply pipe (406) and an air supply pipe (407). The water pump pumps the salt water in the salt water barrel to the first nozzle (403) and the second nozzle (405) through the water supply pipe (406). The saturation barrel (401) is connected to the first nozzle (403) and the second nozzle (405) through the air supply pipe (407).

3. A walk-in alternating salt spray test chamber according to claim 2, characterized in that: Arc-shaped grooves are provided on both sides of the mist spray tower (402), and adjustment plates (404) for adjusting the size of the salt mist are clamped in the arc-shaped grooves.

4. A walk-in alternating salt spray test chamber according to claim 1, characterized in that: The temperature and humidity control device (5) comprises a hot and cold chamber (501), a fan (505) is provided at the top of the hot and cold chamber (501), a return air port (506) is provided at the bottom of the hot and cold chamber (501), an air outlet of the fan (505) is connected to the test area (3), a refrigeration module, a heating wire (504), and a humidifier (512) are installed in the hot and cold chamber, and a mist outlet channel (513) of the humidifier (512) is connected to the hot and cold chamber (501).

5. A walk-in alternating salt spray test chamber according to claim 4, characterized in that: The refrigeration module comprises a compressor (502), a condenser (507), and an evaporator (503); one end of the condenser (507) is in communication with the compressor (502); the other end of the condenser (507) is in communication with the evaporator (503) via a multi-way component; and the evaporator (503) is in communication with the compressor (502).

6. A walk-in alternating salt spray test chamber according to claim 5, characterized in that: The multi-channel component comprises a main channel and at least one branch channel, the main channel being connected to a first solenoid valve (508) and an expansion valve (509), and each of the branch channels being connected to a second solenoid valve (510) and a capillary tube (511).

7. The walk-in alternating salt spray test chamber according to claim 1, characterized in that: The heating device (6) comprises a heating tube (601), and the heating tube (601) is arranged at intervals at the lower part of the inner wall of the test area (3).

8. The walk-in alternating salt spray test chamber according to claim 1, characterized in that: The box body (1) is provided with a demisting device (7) connected to the test area (3), and the demisting device (7) comprises a compressed air pipe (701) and a demisting pipe (702), one end of each of the compressed air pipe (701) and the demisting pipe (702) is connected to the test area (3), the other end of the compressed air pipe (701) is connected to an air compressor, and the other end of the demisting pipe (702) is connected to a salt mist filtering device.

9. The walk-in alternating salt spray test chamber according to claim 1, characterized in that: A salt mist collection port (8) is provided in the test area (3), and a metering cylinder connected to the salt mist collection port (8) is installed on the box body (1).

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