A marine environment simulation accelerated test chamber

Abstract

The present invention provides a marine environment simulation accelerated test box, the test box body has a temperature control system, an irradiation control system, a salt spray generator is arranged in the test box body, the salt spray generator includes a light-transmitting inner cabin, the inner cavity of the light-transmitting inner cabin forms an independent and closed salt spray environment, the space outside the light-transmitting inner cabin and belonging to the inner part of the test box body constitutes a dry heat environment and an irradiation environment, a motor is arranged on the top of the test box body, the motor is connected to a stirring blade through a flexible rotating shaft, the flexible rotating shaft passes downward through the top cover of the light-transmitting inner cabin and then extends into the inner cavity of the light-transmitting inner cabin, and the flexible rotating shaft is in a movable sealing connection with the top cover of the light-transmitting inner cabin. The present invention can not only quickly realize the lateral displacement and vertical lifting of the top cover of the light-transmitting inner cabin without removing the agitator rotating shaft, but also does not require the operator to hold the top cover of the light-transmitting inner cabin for a long time during the process of loading and unloading samples, which is convenient for the operation of quickly loading and unloading samples and will not affect the closed salt spray environment in the light-transmitting inner cabin.

Description

Technical Field

[0001] The invention relates to environmental testing equipment, in particular to an ocean environment simulation accelerated testing box. Background Art

[0002] In the field of environmental testing, the implementation of marine environment simulation mainly uses a salt spray test chamber to simulate the salt spray environment. For example, the simulated marine environment test chamber provided by the existing document CN111896463A includes a shell and a salt spray generating device, an air duct, a concentration adjustment mechanism and an experimental box arranged on the shell. Before use, a certain amount of seawater is first placed inside the shell, and then the salt spray generating device converts the salt water inside itself into salt spray, which enters the shell through the air duct. The salt spray corrodes and destroys the experimental product in the experimental box in the shell. In addition, the wet and hot marine environment simulation equipment provided by the document CN113552056B includes a dry salt spray generating device, a humidifier, a salt spray generating chamber, a main test chamber and a temperature and humidity adjustment system, which can simultaneously and collaboratively load the working environment factors including voltage, current, temperature and humidity, salt spray, and ultraviolet radiation for the tested electrical equipment.

[0003] However, the existing marine environment simulation accelerated test chambers are designed to expose the samples directly in the test chamber.

[0004] The salt spray generated by the salt spray generator directly acts on the inner wall of the test chamber and its ancillary functional parts. In this case, the corrosion of the inner wall of the test chamber and its ancillary functional parts by the salt spray atmosphere must be considered. Even so, it is very easy to cause aging corrosion of key components and even systems in the test chamber during use.

[0005] If the sample can be placed in a closed container (not absolutely closed, with necessary pressure relief holes / pressure relief seams), and then the container containing the sample is placed in a test chamber for testing, this can provide a more reliable technical idea for marine environment simulation. However, since a more realistic salt spray generator needs to stir the salt solution with the help of a stirrer, and the motor of the stirrer can only be set outside the container, this closed structure will face another technical difficulty: it is difficult to quickly load and unload the sample without affecting the salt spray environment in the container, which is equivalent to the difficulty of quickly loading and unloading the sample in a small space without affecting the salt spray environment in the container. In many cases, it is even necessary to remove the rotating shaft of the stirrer. Summary of the invention

[0006] The invention provides a marine environment simulation accelerated test box, which can at least realize the rapid loading and unloading of samples without affecting the salt spray environment in the container.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution.

[0008] A marine environment simulation accelerated test chamber, including a test chamber body, the test chamber body has a temperature control system and an irradiation control system, and is characterized in that: a salt spray generator is arranged in the test chamber body, the salt spray generator includes a light-transmitting inner cabin, the inner cavity of the light-transmitting inner cabin forms an independent and closed salt spray environment, the space outside the light-transmitting inner cabin and belonging to the inside of the test chamber body constitutes a dry heat environment and an irradiation environment, a motor is arranged on the top of the test chamber body, the output shaft of the motor is connected to a stirring blade through a flexible rotating shaft, the flexible rotating shaft passes downward through the top cover of the light-transmitting inner cabin and then extends into the inner cavity of the light-transmitting inner cabin, the flexible rotating shaft is movably sealed and connected to the top cover of the light-transmitting inner cabin, and the stirring blade is located at the bottom of the inner cavity of the light-transmitting inner cabin.

[0009] Preferably, the flexible rotating shaft includes an upper shaft section, a middle shaft section and a lower shaft section. The middle shaft section adopts a flexible structure that can be stretched and bent. Only the middle shaft section passes through the top cover of the light-transmitting inner cabin. The upper shaft section and the lower shaft section adopt a rigid structure.

[0010] In order to realize the operation of loading and unloading samples more conveniently and quickly, the middle section of the shaft is composed of multiple movable joints and a pull wire axially arranged on all the movable joints, the lower end of the pull wire is connected to the top of the lower section of the shaft, and the upper end of the pull wire can be fastened to the upper section of the shaft; when the pull wire is loosened, adjacent movable joints can both rotate with each other and slide along the pull wire; when the pull wire is pulled up to the extreme position and fastened to the upper section of the shaft, all adjacent movable joints are mutually embedded and connected, and the movable joint located at the top is embedded in the bottom of the upper section of the shaft, and the movable joint located at the bottom is embedded in the top of the lower section of the shaft. At this time, the upper section, the middle section of the shaft, the lower section of the shaft and the pull wire together constitute a rigid structure that can rotate as a whole.

[0011] In order to more smoothly realize the extension, bending and resetting of the flexible rotating shaft, a through hole is axially arranged on each of the movable joints, a protrusion is arranged on the upper part of each movable joint, and a recess is arranged on the bottom part. The protrusion can be limited after extending into the recess (that is, at this time, the two adjacent movable joints cannot rotate separately); a protrusion with a radial hole is arranged on the top of the lower section of the shaft, and the protrusion on the top of the lower section of the shaft is suspended at the lower end of the pull wire; the upper section of the shaft is provided with a recess, and an L-shaped through hole is arranged above the recess, and the pull wire passes through the L-shaped through hole.

[0012] Preferably, the protrusion is a truncated cone, and a limit key is provided on the inclined wall of the truncated cone, and the limit key is used to fit in the keyway on the inner wall of the recessed portion.

[0013] Furthermore, a grip is provided on the top of the top cover of the light-transmitting inner cabin, the grip has a thin neck section, a vertically arranged circular hole is provided on the grip, a rotatable cylindrical plug body is matched in the circular hole, an annular limit platform is provided in the circular hole below the cylindrical plug body, an axial hole is axially provided on the cylindrical plug body, and one or more movable joints are matched in the axial hole. With such a structure, the pressure change in the inner cavity of the light-transmitting inner cabin can be realized by means of the up and down floating of the cylindrical plug body, and the small gap between the cylindrical plug body and the grip can also be used as a pressure relief gap to facilitate the self-adaptation to the salt spray environment change of the light-transmitting inner cabin.

[0014] In order to realize the operation of loading and unloading samples more safely and quickly, a horizontally arranged frame is provided inside the test box body and above the top cover of the light-transmitting inner cabin. The frame is clamped on the inner wall of the test box body. Two parallel movable rods are provided on the frame. Card plates are arranged facing each other on the two movable rods. Semicircular notches are respectively provided on the two card plates. When the two movable rods are brought closer to each other, the diameter of the circle enclosed by the two semicircular notches is larger than the outer diameter of the thin neck section of the top cover and smaller than the outer diameter of the top edge of the gripping portion, so that the top cover can be clamped and hung between the card plates.

[0015] Furthermore, the two clamping plates hold the thin neck section of the top cover tightly, and the two movable rods are locked together by a locking component.

[0016] Preferably, the frame is a rectangular frame made of round tubes or square tubes, and the single movable rod is movably engaged on the frame via a sliding member.

[0017] Furthermore, the light-transmitting inner cabin comprises a cabin body and the top cover matched on the cabin body, the stirring blade arranged in the cabin body of the light-transmitting inner cabin is immersed in the saturated salt solution in the cabin body, and a hole plate with a through hole is provided on the movable sleeve of the lower section of the shaft; an annular boss is provided on the inner wall of the cabin body, and the edge of the hole plate is located on the annular boss; an arc plate with a through hole is provided on the movable sleeve of the lower section of the shaft, and the arc plate is located above the orifice plate, the outer wall of the arc plate is a spherical surface, the concave part of the arc plate faces downward, and the edge of the arc plate is located on the annular boss; the orifice plate is close to the liquid surface of the saturated salt solution; the inner wall of the top cover is an arc surface.

[0018] Beneficial effects:

[0019] 1. The scheme of the present invention can not only quickly realize the lateral displacement and vertical lifting of the top cover of the light-transmitting inner cabin without removing the agitator shaft, but also eliminate the need for the operator to hold the top cover of the light-transmitting inner cabin for a long time during the process of loading and unloading the sample, which is convenient for the operation of quickly loading and unloading the sample, and is also convenient for shifting the cabin body of the light-transmitting inner cabin toward the door of the test box, which is conducive to accurately adjusting the position of the sample and taking and placing the sample, and more importantly, it will not affect the closed salt spray environment in the light-transmitting inner cabin;

[0020] 2. The solution of the present invention can realize the pressure change in the inner cavity of the light-transmitting inner cabin by means of the up and down floating of the cylindrical plug body on the top cover of the light-transmitting inner cabin, so as to adapt to the salt spray environment change of the light-transmitting inner cabin;

[0021] 3. The solution of the present invention can flexibly and smoothly hang the top cover of the light-transmitting inner cabin on the frame safely, and there is no need to consider the operation error during the hanging process, which conforms to the operation habits of all operators;

[0022] 4. The scheme of the present invention can coordinately control the temperature, humidity, irradiance and salt spray concentration in the test box and the light-transmitting inner cabin, and can flexibly promote the evaporation of the salt solution so that the salt spray formed is closer to the natural state, and transmit the light irradiation and temperature to the sample through the light-transmitting inner cabin. It can not only be used to carry out the four-factor accelerated test in the marine environment, but also the light-transmitting inner cabin can be taken out to carry out the natural environment test in the marine environment, and can also be used to carry out the three-factor (salt spray + humidity + irradiance, or temperature + humidity + salt spray) environmental accelerated test;

[0023] 5. The marine environment simulation accelerated test box of the present invention has a small size and a simple structure. It does not need to add a complex salt spray control system. It is used to carry out four-factor environmental accelerated tests, which has the advantage of extremely low test costs. There is almost no problem of corrosion and damage to key components in the test box during the entire test process. Taking a three-month accelerated test of a single sample of a marine equipment as an example, the test cost including the test device is only 100,000 to 150,000 yuan, which can save more than 50% of the test cost compared with the existing test scheme;

[0024] 6. The marine environment simulation accelerated test box of the present invention is used to carry out multi-factor accelerated tests, which has the advantage of high efficiency, cleverly realizes the physical separation of the optical channel, the salt spray channel, and the water channel, and eliminates the salt spray spray system used in the traditional test scheme. The energy consumption, space and transportation costs required during the test are greatly reduced, and the test cost is greatly reduced under the condition of more optimized functions;

[0025] 7. The marine environment simulation accelerated test box of the present invention has good stability and reliability. The humid and hot salt fog only affects the objects inside the light-transmitting inner cabin, so that the weather resistance and reliability of the test box outside the light-transmitting inner cabin are better, which is conducive to a more stable test process. The salt fog formed is closer to the natural state, and can better simulate the salt fog effect under the natural state. It can also timely, flexibly and accurately adjust the salt fog generation, irradiance and temperature. More importantly, after the test is terminated and the box is opened, the test can be continued quickly and accurately, and there is no delay in the response of the irradiation sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1is an external schematic diagram of the marine environment simulation accelerated test chamber in Example 1;

[0027] Figure 2 1 is a schematic diagram of the interior of the marine environment simulation accelerated test chamber in Example 1 (the top cover of the light-transmitting inner chamber is in a closed state);

[0028] Figure 3 is a schematic diagram of the partial structure inside the marine environment simulation accelerated test chamber in Example 1 (corresponding to Figure 2 );

[0029] Figure 4 1 is a schematic diagram of the interior of the marine environment simulation accelerated test chamber in Example 1 (the top cover of the light-transmitting inner cabin is in a suspended state);

[0030] Figure 5 is a schematic diagram of the partial structure inside the marine environment simulation accelerated test chamber in Example 1 (corresponding to Figure 4 );

[0031] Figure 6 is a schematic diagram of the flexible shaft in Example 1 (a state in which the tension wire of the flexible shaft is loosened but the flexible shaft is not bent);

[0032] Figure 7 is a schematic diagram of the flexible shaft in Example 1 (the flexible shaft is in a bent state, corresponding to Figure 5 );

[0033] Figure 8 yes Figure 6 The enlarged view of the middle A part is the schematic diagram of the activity section;

[0034] Fig. 9 is a schematic diagram of the position where the grip portion of the top cover is located in Example 1;

[0035] Fig.10 It is an exploded view of the light-transmitting inner cabin in Example 1. DETAILED DESCRIPTION

[0036] The present invention is further described in conjunction with the accompanying drawings and specific embodiments, but the description of the following embodiments is only used to help understand the principle and core idea of ​​the present invention, and is not intended to limit the scope of protection of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, improvements made to the present invention also fall within the scope of protection of the claims of the present invention. Example 1

[0037] like Figures 1 to 10As shown, a marine environment simulation accelerated test box includes a test box body, the test box body has a temperature control system and an irradiation control system, the operation interface end 27 of the temperature control system and the irradiation control system is arranged on the side wall of the box body 18, the operation interface end 27 and the box door 26 are located on the same side, and the top wall 17 of the box body 18 is provided with a protective cover 16. A salt spray generator is arranged in the test box body, and the salt spray generator includes a light-transmitting inner cabin 5, the light-transmitting inner cabin 5 is made of quartz glass or other high-light-transmittance glass (light transmittance is not less than 90%), the light-transmitting inner cabin 5 is placed on a turntable 28 in the box body 18, the inner cavity of the light-transmitting inner cabin 5 forms an independent and closed salt spray environment, the space outside the light-transmitting inner cabin 5 and belonging to the inside of the test box body constitutes a dry heat environment and an irradiation environment, and a motor 19 is arranged on the top of the test box body, and the motor 19 is located at the protective cover 16. Inside the cover 16, the output shaft of the motor 19 extends from the top wall 17 of the box body 18 into the box body 18, the voltage and current regulator 15 of the test box body is also installed on the top wall 17 and is located in the protective cover 16, the output shaft of the motor 19 is connected to the stirring blade 10 through the flexible rotating shaft 7, the flexible rotating shaft 7 passes downward through the top cover 6 of the light-transmitting inner cabin 5 and then extends into the inner cavity of the light-transmitting inner cabin 5, the flexible rotating shaft 7 is movably sealed and connected to the top cover 6 of the light-transmitting inner cabin 5, and the stirring blade 10 is located at the bottom of the inner cavity of the light-transmitting inner cabin 5.

[0038] In this embodiment, the software part of the temperature control system can adopt a temperature control module that flexibly sets the temperature according to actual conditions, or can adopt a previously developed temperature-humidity coupling accelerated storage test model based on chord functions (for details, see document number CN108763842B).

[0039] In this embodiment, the irradiation control system adopts an ultraviolet irradiation system, and its ultraviolet lamp is installed on the inner wall of the test box body above the salt spray generator.

[0040] In this embodiment, refer to Figures 6 to 8 As shown, the flexible shaft 7 includes an upper shaft section 71, a middle shaft section 72 and a lower shaft section 73. The middle shaft section 72 adopts a flexible structure that can be stretched and bent. Only the middle shaft section 72 passes through the top cover 6 of the light-transmitting inner cabin 5. The upper shaft section 71 and the lower shaft section 73 adopt a rigid structure. Among them, the middle section 72 of the shaft is composed of a plurality of movable joints 74 and a pull wire 75 for axially passing through all the movable joints 74, the lower end of the pull wire 75 is connected to the top of the lower section 73 of the shaft, and the upper end of the pull wire 75 can be fastened to the upper section 71 of the shaft; when the pull wire 75 is loosened, the adjacent movable joints 74 can both rotate with each other and slide along the pull wire 75; when the pull wire 75 is pulled up to the extreme position and fastened to the upper section 71 of the shaft, all adjacent movable joints 74 are mutually embedded and connected, and the movable joint 74 located at the top is embedded in the bottom of the upper section 71 of the shaft, and the movable joint 74 located at the bottom is embedded in the top of the lower section 73 of the shaft. At this time, the upper section 71 of the shaft, the middle section 72 of the shaft, the lower section 73 of the shaft and the pull wire 75 together constitute a rigid structure that can rotate as a whole (at this time, as shown in FIG. Figure 2 and Figure 3 A through hole is axially arranged on each movable joint 74, and a protrusion 76 is arranged on the upper part of each movable joint 74 (as shown in FIG. Figure 8 As shown, the raised portion 76 is a truncated cone, and a limit key 79 is provided on the inclined wall of the truncated cone. The limit key 79 is used to fit in the keyway 80 on the inner wall of the inner recess 77). The bottom is provided with an inner recess 77, and the raised portion 76 can be limited after extending into the inner recess 77; the top of the lower section 73 of the shaft is provided with a raised portion 76 with a radial hole, and the raised portion 76 at the top of the lower section 73 of the shaft is suspended at the lower end of the pull wire 75; the upper section 71 of the shaft is provided with an inner recess 77, and an L-shaped through hole is provided above the inner recess 77, and the pull wire 75 passes through the L-shaped through hole. Fig. 9 As shown, a gripping portion 31 is provided on the top of the top cover 6 of the light-transmitting inner cabin 5, and the gripping portion 31 has a thin neck section 25. A vertically arranged circular hole 35 is provided on the gripping portion 31, and a movable cylindrical plug body 32 is fitted in the circular hole 35. An annular limit platform 34 is provided in the circular hole 35 below the cylindrical plug body 32, and an axial hole 33 is axially provided on the cylindrical plug body 32, wherein one or more movable joints 74 are fitted in the axial hole 33, and a sliding / movable sealing ring is provided on the movable joint 74 and then fitted with the side wall of the axial hole 33, so that the top cover 6 can move along the movable joint 74.

[0041] In this embodiment, Figure 3 and Figure 5 As shown, a horizontally arranged frame 20 is provided inside the test box body and above the top cover 6 of the light-transmitting inner cabin 5. The frame 20 is clamped on the mounting frame 24 on the inner wall of the test box body. Two parallel movable rods 21 are provided on the frame 20. Clamping plates 22 are arranged facing each other on the two movable rods 21. Semicircular notches 23 are respectively provided on the two clamping plates 22. When the two movable rods 21 are brought closer to each other, the diameter of the circle surrounded by the two semicircular notches 23 is larger than the outer diameter of the thin neck section 25 of the top cover 6 and smaller than the outer diameter of the top edge of the gripping portion 31, so that the top cover 6 can be clamped and hung between the two clamping plates 22; the two clamping plates 22 hold the thin neck section 25 of the top cover 6 tightly, and the two movable rods 21 are locked together by a locking component; the frame 20 adopts a rectangular frame made of round tubes or square tubes, and the single movable rod 21 is movably fitted on the frame 20 through a sliding member.

[0042] In this embodiment, Figure 4 and 10As shown, the light-transmitting inner cabin 5 includes a cabin body and a top cover 6 matched with the cabin body, the stirring blade 10 arranged in the cabin body is immersed in the saturated salt solution in the cabin body, and the saturated salt solution is contained in the space 11 of the inner cavity of the light-transmitting inner cabin 5, and a hole plate 1 with through holes is movably sleeved on the flexible rotating shaft 7, and the through holes 9 on the hole plate 1 are circular holes; an annular boss 2 is arranged on the inner wall of the cabin body, and the edge of the hole plate 1 is located on the annular boss 2; an arc plate 3 with strip-shaped through holes 4 is movably sleeved on the flexible rotating shaft 7, and the arc plate 3 is located above the orifice plate 1, and the outer wall of the arc plate 3 is spherical as a whole, the concave part of the arc plate 3 faces downward, and the edge of the arc plate 3 is located on the annular boss 2; the inner wall of the top cover 6 is an arc surface.

[0043] In this embodiment, a thread 78 is provided on the shaft upper section 71, so as to facilitate winding the pull wire 75 passing through the L-shaped through hole around the thread 78 and then fixing it, and at the same time prevent the movable joint 74 from loosening after being inserted.

[0044] In this embodiment, the diameter of the space at the bottom of the light-transmitting inner cabin 5 containing the saturated salt solution is 200 mm and the height is 100 mm.

[0045] In this embodiment: the motor 19 is mainly used to adjust the speed of the agitator to control the amount of salt mist generated / salt mist concentration, and the humidity is adjusted by a saturated solution formed by water and salt, and the ratio of water to salt is 15‰. In this embodiment: a humidity sensor and a salinity sensor are provided in the light-transmitting inner cabin 5, and the humidity sensor, salinity sensor and motor 19 are connected to and controlled by the controller.

[0046] In this embodiment, when using the marine environment simulation accelerated test box, firstly, a salt solution of appropriate concentration is placed in the space 11 below the orifice plate 1, and then the sample is placed directly on the orifice plate 1, or the sample is inserted from the strip through hole 4 on the arc plate 3 and supported on the orifice plate 1, or the sample is placed directly on the arc plate 3, and then the top cover 6 is covered, and then the light-transmitting inner cabin 5 with the sample is placed in the test box and fixed, and then the motor 19 is turned on and the motor speed is adjusted, and the accelerated test is started after the temperature and irradiance of the environmental test box are set. After the test is completed, the sample is taken out for test evaluation. When in use, the salinity can be changed by controlling the speed of the motor to simulate the actual situation of breaking waves. The concentration of salt spray formed by different motor speeds is also different, and the humidity is controlled by the saturation evaporation of the solution.

[0047] If it is necessary to place a sample on the arc plate 3 in the light-transmitting inner chamber 5 or to take a sample out of the arc plate 3, after turning off the motor 19, first lift the top cover 6 upward, then move the movable rods 21 on the two frames 20 toward each other, and clamp the thin neck section 25 of the holding portion 31 on the top cover 6 on the two clamping plates 22 of the movable rod 21 (this process is equivalent to clamping / holding the holding portion 31 on the two clamping plates 22, and the semicircular notch 23 on the clamping plate 22 just fits on the thin neck section 25), and then lock the two movable rods 21 together through the locking component to prevent the top cover 6 from falling. The state at this time is as follows Figure 4 and Figure 5 shown.

[0048] Due to the adoption of the flexible shaft 7 with the aforementioned specific structure, after the pull wire 75 is released, the middle section 72 of the flexible shaft 7 can bend laterally and lengthen (at this time, the adjacent movable joint 74 can slide axially along the pull wire). Therefore, in the process of first lifting up the top cover 6 or lowering the top cover 6, even if the top cover 6 is laterally offset, the middle section 72 of the shaft can bend adaptively accordingly. There is no need to consider operating errors in the whole process, which conforms to the operating habits of all operators and facilitates the flexible and smooth safe hanging of the top cover 6 of the light-transmitting inner cabin 5 on the frame and the lowering of the top cover 6 of the light-transmitting inner cabin 5.

[0049] Since there is a salt spray atmosphere in the inner cavity of the light-transmitting inner cabin 5, as the temperature in the test box rises, the pressure in the inner cavity of the light-transmitting inner cabin 5 will change. At this time, the up and down floating of the cylindrical plug body 32 on the top cover 6 of the light-transmitting inner cabin 5 can be used to adapt to the pressure change in the inner cavity of the light-transmitting inner cabin 5. At the same time, the tiny gap between the cylindrical plug body 32 and the gripping portion 31 can also serve as a pressure relief gap. At this time, the middle section 72 of the shaft is a rigid structure, so its rotation and sealing performance will not be affected by the up and down floating of the cylindrical plug body 32, and the salt spray environment in the light-transmitting inner cabin 5 will not be affected.

[0050] Due to the adoption of Figure 8 The movable joint 74 shown in the figure needs the operator to shake or rotate the movable joint 74 while tightening the cable, so that the limit key 79 of the protrusion can be quickly inserted into the keyway 80 of the inner recess 77. Example 2

[0051] A marine environment simulation accelerated test box, referring to Example 1, the main difference between it and Example 1 is that the orifice plate 1 is omitted and only the arc plate 3 is retained.

[0052] On the basis of the aforementioned embodiments, a filter film is provided on the outer wall of the cabin, and the filter film is pasted on the outer wall of the cabin, so that light waves of different frequency bands can be flexibly selected. For example, when ultraviolet light needs to be shielded, an ultraviolet filter film is selected to be pasted on the outer wall of the cabin, and when infrared light needs to be shielded, an infrared filter film is selected to be pasted on the outer wall of the cabin.

[0053] The marine environment simulation accelerated test chamber provided in the embodiment can not only quickly realize the lateral displacement and vertical lifting of the top cover of the light-transmitting inner cabin without removing the agitator shaft, but also does not require the operator to hold the top cover of the light-transmitting inner cabin for a long time during the process of loading and unloading samples, which is convenient for the operation of quickly loading and unloading samples. It is also convenient to shift the cabin body of the light-transmitting inner cabin to the door of the test chamber, which is conducive to accurately adjusting the position of the sample and taking and placing the sample, and more importantly, it will not affect the closed salt spray environment in the light-transmitting inner cabin.

[0054] The marine environment simulation acceleration test box provided in the embodiment can adapt to the pressure changes in the inner cavity of the light-transmitting inner cabin by means of the up and down floating of the cylindrical plug on the top cover of the light-transmitting inner cabin, so as to adapt to the salt spray environment changes of the light-transmitting inner cabin.

[0055] The marine environment simulation accelerated test chamber provided in the embodiment can flexibly and smoothly hang the top cover of the light-transmitting inner cabin safely on the frame, and there is no need to consider operational errors during the hanging process, which conforms to the operating habits of all operators.

[0056] The test device provided in the embodiment has multiple functions and can coordinately control the temperature, humidity, irradiance and salt spray concentration in the test box and the light-transmitting inner cabin. At the same time, it can flexibly promote the evaporation of the salt solution so that the salt spray formed is closer to the natural state, and transmit the light irradiation and temperature to the sample through the light-transmitting inner cabin. It can not only be used to carry out four-factor accelerated tests in marine environments, but also its light-transmitting inner cabin can be taken out to carry out natural environment tests in marine environments, and can also be used to carry out three-factor (salt spray + humidity + irradiance, or temperature + humidity + salt spray) environmental accelerated tests.

[0057] The test device provided in the embodiment is small in size and simple in structure. It only needs to install a light-transmitting inner cabin and a stirring system in a traditional test box with controllable temperature and irradiance, and there is no need to add a complex salt spray control system. It can be used to carry out four-factor environmental accelerated tests, which has the advantage of extremely low test cost. During the entire test process, there is almost no problem of corrosion and damage to key components in the test box. Taking the use of the test device in Example 2 to carry out a three-month accelerated test on a single sample of a marine equipment as an example, the test cost including the test device is only 100,000 to 150,000 yuan, which can save more than 90% of the test cost compared with the existing test scheme.

[0058] The test device provided in the embodiment is used to carry out multi-factor accelerated tests, which has the advantage of high efficiency. It cleverly realizes the physical separation of the optical channel, the salt spray channel, and the water channel, and eliminates the salt spray spray system used in traditional test schemes. The energy consumption, space, and transportation costs required during the test are greatly reduced, and the test cost is greatly reduced while the function is more optimized.

[0059] The test device provided in the embodiment has good stability and reliability, and the hot and humid salt fog only affects the objects inside the light-transmitting inner cabin, so that the test box outside the light-transmitting inner cabin has better weather resistance and reliability, which is conducive to a more stable test process, and the formed salt fog is closer to the natural state, and can better simulate the salt fog action under the natural state (the salt fog generation system of the traditional test device is based on the spraying action on the sample, and no matter how the salt fog spray is placed, it is very different from the salt fog action under the natural state), and can timely, flexibly and accurately adjust the salt fog generation, irradiance and temperature, and more importantly, can quickly and accurately continue the test after terminating the test and unpacking the box, and because the irradiation acts on the sample in the light-transmitting inner cabin with the help of the light-transmitting inner cabin, the irradiation sensor is not affected by the salt fog, so that it can sensitively sense the irradiance, avoiding the occurrence of delayed response of the irradiation sensor.

Claims

1. A marine environment simulation accelerated test chamber, comprising a test chamber body, the test chamber body having a temperature control system and an irradiation control system, characterized in that: A salt spray generator is arranged in the test chamber body, the salt spray generator comprises a light-transmitting inner chamber (5), the inner cavity of the light-transmitting inner chamber (5) forms an independent and closed salt spray environment, the space outside the light-transmitting inner chamber (5) and belonging to the inner part of the test chamber body forms a dry heat environment and an irradiation environment, a motor (19) is arranged on the top of the test chamber body, the output shaft of the motor (19) is connected to the stirring blade (10) through a flexible rotating shaft (7), the flexible rotating shaft (7) passes downward through the top cover (6) of the light-transmitting inner chamber (5) and then extends into the inner cavity of the light-transmitting inner chamber (5), the flexible rotating shaft (7) and the top cover (6) of the light-transmitting inner chamber (5) are movably sealed, and the stirring blade (10) is located at the bottom of the inner cavity of the light-transmitting inner chamber (5); The flexible rotating shaft (7) comprises an upper shaft section (71), a middle shaft section (72) and a lower shaft section (73); the middle shaft section (72) adopts a flexible structure capable of extension and contraction and bending; only the middle shaft section (72) passes through the top cover (6) of the light-transmitting inner cabin (5); the upper shaft section (71) and the lower shaft section (73) adopt a rigid structure; The middle section (72) of the shaft is composed of a plurality of movable joints (74) and a pull wire (75) for axially passing through all the movable joints (74); the lower end of the pull wire (75) is connected to the top of the lower section (73) of the shaft, and the upper end of the pull wire (75) can be fastened to the upper section (71) of the shaft; when the pull wire (75) is loosened, the adjacent movable joints (74) can both rotate and slide along the pull wire (75); when the pull wire (75) is pulled up to the limit position and fastened to the upper section (71), all adjacent movable joints (74) are mutually engaged and connected, and the movable joint (74) located at the top is engaged with the bottom of the upper section (71) of the shaft, and the movable joint (74) located at the bottom is engaged with the top of the lower section (73) of the shaft; at this time, the upper section (71), the middle section (72) of the shaft, the lower section (73) of the shaft and the pull wire (75) together constitute a rigid structure that can rotate as a whole.

2. The marine environment simulation accelerated test chamber according to claim 1, characterized in that: A through hole is axially arranged on each of the movable joints (74); a protrusion (76) is arranged on the upper part of each of the movable joints (74) and a recess (77) is arranged on the bottom part; the protrusion (76) can be limited after extending into the recess (77); a protrusion (76) with a radial hole is arranged on the top of the lower shaft section (73); the protrusion (76) on the top of the lower shaft section (73) is suspended on the lower end of the pull wire (75); the upper shaft section (71) is provided with a recess (77); an L-shaped through hole is arranged above the recess (77); the pull wire (75) passes through the L-shaped through hole.

3. The marine environment simulation accelerated test chamber according to claim 2, characterized in that: The protrusion (76) is in the form of a truncated cone, and a limit key (79) is provided on the inclined wall of the truncated cone. The limit key (79) is used to fit in a keyway (80) on the inner wall of the inner recess (77).

4. The marine environment simulation accelerated test chamber according to claim 3, characterized in that: A gripping portion (31) is provided on the top of the top cover (6) of the light-transmitting inner chamber (5), the gripping portion (31) having a thin neck section (25), a vertically arranged circular hole (35) is provided on the gripping portion (31), a movable cylindrical plug body (32) is fitted in the circular hole (35), an annular limiting platform (34) is provided in the circular hole below the cylindrical plug body (32), an axial hole (33) is axially provided on the cylindrical plug body (32), wherein one or more movable joints (74) are fitted in the axial hole (33).

5. The marine environment simulation accelerated test chamber according to claim 4, characterized in that: A horizontally arranged frame (20) is arranged inside the test box body and above the top cover (6) of the light-transmitting inner chamber (5); the frame (20) is clamped on the inner wall of the test box body; two parallel movable rods (21) are arranged on the frame (20); clamping plates (22) are arranged facing each other on the two movable rods (21); and semicircular notches (23) are respectively arranged on the two clamping plates (22); when the two movable rods (21) are pressed against each other, the diameter of the circle enclosed by the two semicircular notches (23) is larger than the outer diameter of the thin neck section (25) of the top cover (6) and smaller than the outer diameter of the top edge of the gripping portion (31).

6. The marine environment simulation accelerated test chamber according to claim 5, characterized in that: The two clamping plates (22) hold the thin neck section (25) of the top cover (6) tightly, and the two movable rods (21) are locked together by a locking component.

7. The marine environment simulation accelerated test chamber according to claim 6, characterized in that: The frame (20) is a rectangular frame made of round tubes or square tubes, and the single movable rod (21) is movably engaged on the frame (20) via a sliding member.

8. The marine environment simulation accelerated test chamber according to claim 7, characterized in that: The light-transmitting inner chamber (5) comprises a chamber body and the top cover (6) matched with the chamber body. The stirring blade (10) arranged in the chamber body of the light-transmitting inner chamber (5) is immersed in the saturated salt solution in the chamber body. A hole plate (1) with a through hole is movably sleeved on the lower section (73) of the shaft. An annular boss (2) is arranged on the inner wall of the chamber body, and the edge of the hole plate (1) is located on the annular boss (2). An arc plate (3) with a through hole is movably sleeved on the lower section (73) of the shaft. The arc plate (3) is located above the hole plate (1). The outer wall of the arc plate (3) is a spherical surface. The concave part of the arc plate (3) faces downward, and the edge of the arc plate (3) is located on the annular boss (2). The hole plate (1) is close to the liquid surface of the saturated salt solution. The inner wall of the top cover (6) is an arc surface.

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