Simple acceleration environment test device with four adjustable degrees

Abstract

The application provides a simple and easy four-factor adjustable accelerated environment test device, which comprises a test box with controllable temperature and irradiance, a light-transmitting inner cabin is arranged in the test box, an inner cavity of the light-transmitting inner cabin forms an independent salt mist environment, a dry heat environment and an irradiation environment are formed outside the light-transmitting inner cabin and inside the test box. The application can cooperatively control the temperature, humidity, irradiance and salt mist concentration in the test box and the light-transmitting inner cabin, can flexibly promote evaporation of a salt solution, can make the formed salt mist more close to a natural state, and can transmit light irradiation and temperature to a test sample through the light-transmitting inner cabin. The application can be used for carrying out four-factor accelerated test under a marine environment, can be used for carrying out natural environment test under the marine environment by taking out the light-transmitting inner cabin, and can be used for carrying out three-factor environment accelerated test.

Description

Technical Field

[0001] This invention belongs to the field of environmental testing technology, specifically relating to a simple accelerated environmental testing device with four adjustable degrees. Background Technology

[0002] High-end equipment such as weapons, ships, and aircraft operating in marine environments are affected by environmental factors such as temperature, humidity, solar radiation, and salt spray (referred to as the four degrees or four factors in this invention). Rapid and thorough verification of the environmental adaptability of materials and components during the development phase is a crucial foundation for the rational selection of materials to support the environmental adaptability of equipment, and is of great significance for improving the environmental adaptability of equipment during actual service. Failure evaluation of equipment mainly includes natural exposure testing and accelerated indoor testing. The biggest advantage of natural exposure testing is its authenticity and reliability, but its disadvantage is the excessively long testing cycle. Accelerated indoor testing, on the other hand, can significantly shorten the testing cycle.

[0003] Currently, accelerated testing technologies for multi-factor experiments in marine environments have developed rapidly. Marine environmental testing technology is rapidly evolving towards complex, comprehensive simulation and acceleration. In recent years, several related environmental testing devices have emerged, such as the salt spray testing device disclosed in document CN2019113135974, which can reduce testing errors caused by frequent opening and defogging during salt spray testing; the temperature and humidity controllable salt spray test chamber disclosed in document CN2019222604384, which has an adjustable heating tube position; and document CN20... The high-acceleration salt spray test chamber disclosed in document CN2018213952548 increases the corrosion rate by increasing the amount of salt spray and the concentration of oxygen in the salt spray test chamber; the salt spray / ultraviolet coupling accelerated test chamber disclosed in document CN2020203762224; the small full-spectrum sunlight simulation test chamber disclosed in document CN2018218167987; the cold humidification light temperature and humidity comprehensive test chamber disclosed in document CN2019224140740; and the high and low temperature alternating damp heat test chamber disclosed in document CN2019224140740.

[0004] However, existing environmental testing equipment faces the following problems and challenges when used for accelerated marine environmental testing: 1. Large size and complex structure: It typically requires the addition of a salt spray control system and an irradiation control system to a conventional temperature and humidity test chamber, increasing its footprint by more than 50%. The added salt spray control system involves numerous components such as a salt spray generator, a salt spray system, and salt spray delivery pipelines, resulting in a highly complex internal structure; 2. Poor stability and reliability after prolonged use, especially as the generated humid and hot salt spray can easily cause aging and corrosion of critical components and even the entire system within the test chamber; 3. [Further details needed for accurate translation] The cost of production and maintenance is extremely high. Taking a typical adjustable four-degree / four-factor environmental test device as an example, its commercial cost is between 500,000 and 2 million RMB per set. Due to the harsh working conditions of the four-degree / four-factor environmental test, multiple components such as heaters, compressors, controllers, and sensors need to be replaced regularly, and the annual maintenance cost is also tens of thousands of RMB. 4. The direction of the sprayed salt spray is unidirectional and difficult to adjust, which cannot simulate the effect of salt spray under natural conditions. 5. It has poor flexibility. Once the test is stopped and the box is opened during the test, it is not possible to resume the test quickly and accurately. The irradiation sensor has a delayed response and cannot adjust the irradiance quickly and accurately. Summary of the Invention

[0005] In view of the problems mentioned in the background art, the present invention provides a simple accelerated environment testing device with four adjustable degrees.

[0006] To achieve the above objectives, the present invention adopts the technical solution described below.

[0007] A simple accelerated environment testing device with four adjustable degrees includes a test chamber with controllable temperature and irradiance. The device is characterized in that: a light-transmitting inner chamber is provided inside the test chamber, the inner cavity of the light-transmitting inner chamber forms an independent salt spray environment, and the outside of the light-transmitting inner chamber and inside the test chamber constitute a dry heat environment and an irradiation environment.

[0008] Furthermore, the light-transmitting inner chamber includes a chamber body and a cover fitted onto the chamber body. An agitator is installed inside the chamber body, with the agitator blades submerged in a saturated salt solution inside the chamber body. The agitator's rotating shaft passes through the cover and is externally connected to a drive mechanism. A perforated plate with through holes is movably fitted on the rotating shaft.

[0009] To improve the stability of the experimental setup during use, an annular boss is installed on the inner wall of the chamber, with the edge of the orifice plate located on the annular boss. This design prevents the orifice plate from tilting during use, which could affect the operation of the stirrer and thus improve the stability of the experimental setup.

[0010] Furthermore, an arc plate with through holes is movably fitted onto the rotating shaft. The arc plate is located above the perforated plate, its outer wall is spherical, its concave portion faces downward, and its edge is located on an annular protrusion. Preferably, the through holes on the arc plate are vertically arranged strip frames. This design effectively prevents salt solution from directly splashing onto the sample, thus avoiding interference with the salt spray's action.

[0011] Furthermore, a limiting stage is provided on the rotating shaft and above the arc plate, where the sample is fixedly mounted. A fan blade is also provided on the rotating shaft and above the limiting stage, allowing the sample and fan blade to rotate with the shaft. This design better simulates the salt spray effect on aircraft components (such as engine blades) and also facilitates salt spray circulation within the translucent cabin.

[0012] Furthermore, the orifice plate is positioned close to the surface of the saturated salt solution. Placing the sample on the orifice plate facilitates the simulation of the effects of salt spray on exposed components of a ship.

[0013] To better achieve salt spray circulation within the translucent inner chamber, the inner wall of the hatch is curved, the top of the hatch has a support platform, and the inner wall of the chamber is sloping.

[0014] As a preferred option, a filter membrane is installed on the outer wall of the chamber, and the shaft of the agitator is sealed to the chamber cover through a sealed bearing to create a closed salt spray environment inside the chamber.

[0015] Beneficial effects:

[0016] 1. The test device provided by this invention has multiple functions. It can coordinately control the temperature, humidity, irradiance and salt spray concentration inside the test chamber and the light-transmitting inner chamber. At the same time, it can flexibly promote the evaporation of salt solution, so that the salt spray formed is closer to the natural state. It can also transmit light irradiance and temperature to the sample through the light-transmitting inner chamber. It can not only be used to carry out four-factor accelerated tests in marine environment, but also the light-transmitting inner chamber can be removed to carry out natural environment tests in marine environment. It can also be used to carry out three-factor (salt spray + humidity + irradiance, or temperature + humidity + salt spray) environmental accelerated tests.

[0017] 2. The experimental device of this invention is small in size and simple in structure. It only requires the addition of a light-transmitting inner chamber and a stirring system to a traditional test chamber with controllable temperature and irradiance. 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. There is almost no problem of corrosion damage to key components in the test chamber during the entire test process. Taking a three-month accelerated test of a single sample of 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.

[0018] 3. The experimental device of this invention has the advantage of high efficiency in carrying out multi-factor accelerated tests. It cleverly realizes the physical separation of the optical channel, salt spray channel and water channel, eliminating the need for the salt spray system used in traditional experimental schemes. The energy consumption, space and transportation costs required during the test are greatly reduced, and the test cost is significantly reduced with more optimized functions.

[0019] 4. The experimental device of this invention has good stability and reliability. The damp and hot salt spray only affects the objects inside the light-transmitting inner chamber, which makes the test chamber outside the light-transmitting inner chamber more weather-resistant and reliable, which is conducive to a more stable test process. Moreover, the salt spray formed is closer to the natural state, which can better simulate the effect of salt spray under natural conditions. It can also adjust the salt spray generation, irradiance and temperature in a timely, flexible and accurate manner. More importantly, it can quickly and accurately continue the test after the test is stopped and the chamber is opened, without any delay in the response of the irradiation sensor. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the light-transmitting inner chamber of the simplified accelerated environment testing device with four adjustable degrees in the embodiment.

[0021] Figure 2 This is a schematic cross-sectional view of the light-transmitting inner chamber of the four-degree adjustable simplified accelerated environment test device in Example 1;

[0022] Figure 3 This is an exploded view of the transparent inner chamber of the simplified accelerated environment testing device with four adjustable degrees in Example 1;

[0023] Figure 4 This is a schematic cross-sectional view of the light-transmitting inner chamber (containing a sample) of the simple accelerated environmental testing device with four adjustable degrees in Example 2.

[0024] Figure 5 This is a schematic cross-sectional view of the light-transmitting inner chamber (containing a sample) of the simple accelerated environmental testing device with four adjustable degrees in Example 3.

[0025] Figure 6 This is an exploded view of the transparent inner chamber of the simple accelerated environment test device with four adjustable degrees in Example 4. Detailed Implementation

[0026] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. However, the following description of the embodiments is only for the purpose of helping to understand the principles and core ideas of the present invention, and is not intended to limit the scope of protection of the present invention. It should be noted that for those skilled in the art, improvements made to the present invention without departing from the principles of the present invention also fall within the scope of protection of the claims of the present invention.

[0027] Example 1

[0028] like Figures 1 to 3 As shown, a simple accelerated environment test device with four adjustable degrees includes a test chamber with controllable temperature and irradiance. A light-transmitting inner chamber 5 is set inside the test chamber. The inner cavity of the light-transmitting inner chamber 5 forms an independent salt spray environment. The outside of the light-transmitting inner chamber 5 and inside the test chamber constitute a dry heat environment and an irradiation environment. The translucent inner chamber 5 includes a chamber body and a cover 6 fitted onto the chamber body. An agitator is installed inside the chamber, with its agitator blades 10 submerged in a saturated salt solution within the chamber. The saturated salt solution is contained within the space 11 of the inner cavity of the translucent inner chamber 5. The agitator's rotating shaft 7 passes through the cover 6 and is externally connected to a drive mechanism 8. A perforated plate 1 with through holes 1 is movably fitted on the rotating shaft 7; the through holes 9 are circular holes. An annular boss 2 is provided on the inner wall of the chamber, with the edge of the perforated plate 1 located on the annular boss 2. An arc plate 3 with through holes is movably fitted on the rotating shaft 7, located above the perforated plate 1. The outer wall of the arc plate 3 is spherical, with its recessed portion facing downwards, and its edge located on the annular boss 2. The inner wall of the cover 6 is arc-shaped, with a supporting platform at the top, and the inner wall of the chamber is inclined. The agitator's rotating shaft 7 and the cover 6 are sealed together by a sealing bearing to create a closed salt spray environment within the chamber. In this embodiment: the diameter of the space at the bottom of the light-transmitting inner chamber 5 containing the saturated salt solution is 200mm, and the height is 100mm. In this embodiment: the test chamber outside the light-transmitting inner chamber 5 is mainly used to control the temperature and irradiance. The drive mechanism 8 is mainly used to adjust the speed of the stirrer to control the amount / concentration of salt spray. Humidity is regulated by a saturated solution formed by water and salt, with a water-to-salt ratio of 15‰. In this embodiment: a humidity sensor and a salinity sensor are installed in the light-transmitting inner chamber 5. The humidity sensor, salinity sensor, and drive mechanism 8 are connected to and controlled by a first PLC controller. The test chamber itself uses a second PLC controller to connect to a temperature sensor and an irradiance sensor to control the temperature and irradiance inside the chamber.

[0029] In this embodiment, when using the environmental testing device, a salt solution of appropriate concentration is first placed in the space 11 below the orifice plate 1. The sample is then placed directly on the orifice plate 1, or inserted through the strip hole 4 on the arc plate 3 and supported on the orifice plate 1, or placed directly on the arc plate 3. The chamber cover 6 is then closed, and the light-transmitting inner chamber 5 containing the sample is placed inside the test chamber and fixed. The drive mechanism 8 is then turned on, and the motor speed is adjusted. After setting the temperature and irradiance of the environmental test chamber, the accelerated test begins. After the test, the sample is removed for evaluation. During use, the salinity can be changed by controlling the motor speed to simulate the real situation of breaking waves. Different motor speeds result in different salt spray concentrations, and humidity is controlled by the evaporation of the solution saturation.

[0030] Example 2

[0031] like Figure 1 and Figure 4As shown, a simple accelerated environment testing device with four adjustable temperatures includes a test chamber for controlling temperature and irradiance. A light-transmitting inner chamber 5 is installed inside the test chamber, forming an independent salt spray environment within the chamber. The outside of the light-transmitting inner chamber 5, within the test chamber, constitutes a dry heat environment and an irradiation environment. The light-transmitting inner chamber 5 includes a chamber body and a cover 6 fitted onto the chamber body. A stirrer is installed inside the chamber, with its stirring blades 10 submerged in a saturated salt solution. The stirrer's rotating shaft 7 passes through the cover 6 and is externally connected to a drive mechanism 8. A perforated plate 1 with through holes 9 is movably fitted on the rotating shaft 7. An annular boss 2 is provided on the inner wall of the chamber, with the edge of the perforated plate 1 located on the annular boss 2. An arc plate 3 with through holes 3 is movably fitted on the rotating shaft 7. Plate 3 is located above perforated plate 1. The outer wall of arc plate 3 is spherical, the concave part of arc plate 3 faces downward, and the edge of arc plate 3 is located on an annular boss 2. The inner wall of the cover 6 is arc-shaped, the top of the cover 6 has a support platform, and the inner wall of the chamber is inclined. A limiting platform 13 is provided on the rotating shaft 7 above arc plate 3. The limiting platform 13 is used to fix and install the sample 12. A fan blade 14 is provided on the rotating shaft 7 above the limiting platform. The sample 12 and the fan blade 14 can rotate with the rotating shaft 7. In this embodiment, the through hole on arc plate 3 is a strip hole 4, which is arranged vertically along arc plate 3. The rotating shaft 7 of the stirrer and the cover 6 are sealed and connected by a sealing bearing 15 to form a closed salt spray environment in the light-transmitting chamber. In this embodiment: a humidity sensor and a salinity sensor are installed in the light-transmitting inner chamber 5. The humidity sensor, salinity sensor and drive mechanism 8 are connected to and controlled by the first PLC controller. The test chamber itself is connected to a temperature sensor and an irradiation sensor by a second PLC controller and controls the temperature and irradiance inside the chamber.

[0032] In this embodiment, the cover 6, drive mechanism 8, fan blade 14, stirring blade 10, arc plate 3, perforated plate 1, limiting platform 13, and rotating shaft 7 are prefabricated to form an integral structure that can be hoisted or easily lifted. The blade mounting part is machined on the limiting platform 13. When using this environmental testing device to start the accelerated test on the engine blade 12, specifically: first, a salt solution of appropriate concentration is placed in the space 11 below the perforated plate 1. Then, the engine blade 12 (sample) is fixedly installed on the rotating shaft 7 with the limiting platform 13 as the support point. Then, the cover 6, rotating shaft 7, and its components (stirring blade 10, arc plate 3, perforated plate 1, fan blade 14) are placed into the light-transmitting inner chamber 5. The cover 6 is closed and locked. At this time, the edges of the perforated plate 1 and arc plate 3 are supported on the annular boss 2 and can move up and down under the action of external force. Then, the light-transmitting inner chamber 5 is moved into the test chamber and fixed. Then, the heating temperature, irradiance, and rotation speed of the drive mechanism are set by the PLC controller, and then the accelerated test begins. During the experiment, the stirring blade 10, fan blade 14, and engine blade 12 rotate synchronously with the rotating shaft 7. Part of the salt solution spray generated during the stirring process of the stirring blade 10 splashes onto the orifice plate 1 and arc plate 3, driving the orifice plate 1 and arc plate 3 to rise. After the orifice plate 1 and arc plate 3 rise to a certain height, they fall back under the action of gravity. This process is repeated to achieve the raising and lowering of the orifice plate 1 and arc plate 3. The tiny droplets generated during the stirring process form salt mist, which flows in the light-transmitting inner compartment 5 with the help of airflow, and then acts on the engine blade 12. When the salt mist rises to the inner wall of the hatch cover 6 and the lower wall of the orifice plate 1 and the inner wall of the arc plate 3, it will condense into droplets and fall back into the salt solution.

[0033] During the test, the movable perforated plate 1 and arc plate 3 were set up, and vertically arranged strip holes 4 were set on the arc plate 3. This cleverly prevented the salt solution waves generated during the stirring process from directly acting on the engine blades 12, ensuring that only salt spray could act on the engine blades 12. This is beneficial for carrying out the acceleration test of the engine blades 12 in an extremely limited space.

[0034] Example 3

[0035] A simple accelerated environment testing device with four adjustable degrees, referring to Example 2 and in combination Figure 5 As shown, the main difference between it and embodiment 2 is that the through hole on the arc plate 3 is a round hole, and the round hole is located in the area from the bottom of the arc plate 3 to 2 / 3 of the way up.

[0036] Example 4

[0037] A simple accelerated environment testing device with four adjustable degrees, referring to Example 1 and in combination Figure 6 As shown, its main difference from Example 1 is that the arc plate 3 is omitted and only the orifice plate 1 is retained, and the orifice plate 1 is close to the liquid surface of the saturated salt solution.

[0038] Based on the aforementioned embodiments, a light filter film is provided on the outer wall of the cabin. This light filter film is attached to the outer wall of the cabin and can flexibly select light waves of different frequency bands. For example, when it is necessary to shield ultraviolet light, an ultraviolet light filter film is selected and attached to the outer wall of the cabin; when it is necessary to shield infrared light, an infrared light filter film is selected and attached to the outer wall of the cabin.

[0039] The experimental device provided in the embodiment has multiple functions. It can coordinately control the temperature, humidity, irradiance and salt spray concentration inside the test chamber and the light-transmitting inner chamber. At the same time, it can flexibly promote the evaporation of salt solution, so that the salt spray formed is closer to the natural state. It can also transmit light irradiance and temperature to the sample through the light-transmitting inner chamber. It can not only be used to carry out four-factor accelerated tests in marine environments, but also its light-transmitting inner chamber can be removed to carry out natural environment tests in marine environments. It can also be used to carry out three-factor (salt spray + humidity + irradiance, or temperature + humidity + salt spray) environmental accelerated tests.

[0040] The test device provided in the embodiment is small in size and simple in structure. It only requires the addition of a light-transmitting inner chamber and a stirring system to a traditional test chamber with controllable temperature and irradiance. 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. There is almost no problem of corrosion damage to key components in the test chamber during the entire test process. Taking the test device in Embodiment 2 as an example, the test cost including the test device is only 100,000 to 150,000 yuan for a single sample of marine equipment. Compared with the existing test scheme, it can save more than 90% of the test cost.

[0041] The experimental apparatus provided in the embodiments is used to carry out multi-factor accelerated testing, which has the advantages of high efficiency. It cleverly realizes the physical separation of the optical channel, salt spray channel and water channel, eliminating the need for the salt spray system used in traditional experimental schemes. The energy consumption, space and transportation costs required during the test are greatly reduced, and the test cost is significantly reduced with more optimized functions.

[0042] The test apparatus provided in this embodiment exhibits good stability and reliability. The damp and hot salt spray only affects the objects inside the light-transmitting inner chamber, resulting in better weather resistance and reliability of the test chamber outside the light-transmitting inner chamber. This contributes to a more stable test process, and the generated salt spray is closer to the natural state, effectively simulating the effects of salt spray under natural conditions (traditional test apparatuses' salt spray generation systems are based on spraying onto the sample, and regardless of how the salt spray is placed, it differs greatly from the effects of salt spray under natural conditions). Furthermore, it allows for timely, flexible, and accurate adjustment of salt spray generation, irradiance, and temperature. More importantly, it enables rapid and accurate resumption of the test after it has been stopped and the chamber opened. Since the irradiation is applied to the sample inside the light-transmitting inner chamber via the light-transmitting inner chamber, the irradiation sensor is unaffected by the salt spray, thus enabling highly sensitive detection of irradiance and avoiding delays in the irradiation sensor's response.

Claims

1. A simple accelerated environment testing device with four adjustable degrees, characterized in that, The test chamber includes a temperature and irradiance controllable chamber. Inside the chamber is a light-transmitting inner chamber, whose interior forms an independent salt spray environment. The exterior of the light-transmitting inner chamber, within the test chamber, constitutes a dry heat environment and an irradiation environment. The light-transmitting inner chamber includes a chamber body and a cover fitted onto the chamber body. A stirrer is installed inside the chamber, with its blades submerged in a saturated salt solution. The stirrer's shaft passes through the cover and is connected to an external drive mechanism. A perforated plate with through holes is movably fitted on the shaft; the through holes on the perforated plate are circular. An annular boss is provided on the inner wall of the chamber, with the edge of the perforated plate located on the annular boss. An arc plate with through holes is movably fitted on the shaft, located above the perforated plate. The outer wall of the arc plate is spherical, with its concave portion facing downwards, and its edge located on the annular boss. The inner wall of the chamber cover is curved, and the top of the chamber cover has a support platform. The inner wall of the chamber is sloping. A limiting platform is set on the rotating shaft and above the curved plate. The limiting platform is used to fix the sample. A fan blade is set on the rotating shaft and above the limiting platform. The sample and the fan blade can rotate with the rotating shaft. The through holes on the curved plate are strip holes, which are arranged vertically along the curved plate. The rotating shaft of the stirrer is sealed to the chamber cover through a sealed bearing to form a closed salt spray environment in the light-transmitting chamber. The light-transmitting inner chamber is equipped with a humidity sensor and a salinity sensor. The humidity sensor, salinity sensor and drive mechanism are connected to and controlled by a first PLC controller. The test chamber itself is connected to a temperature sensor and an irradiation sensor by a second PLC controller to control the temperature and irradiance inside the chamber. When using this environmental testing apparatus to begin accelerated testing of engine blades, specifically: first, a salt solution of appropriate concentration is placed in the space below the orifice plate. Then, the sample is fixedly installed on the rotating shaft, with the limiting platform as a support point. Next, the chamber cover, rotating shaft, and the stirring blades, arc plate, orifice plate, and fan blades installed on the rotating shaft are placed into the light-transmitting inner chamber. The chamber cover is then closed and locked. At this time, the edges of the orifice plate and arc plate are supported on the annular boss and can move up and down under external force. Then, the light-transmitting inner chamber is moved into the test chamber and fixed. Then, the heating temperature, irradiance, and drive mechanism speed are set through the PLC controller, and then... The acceleration test begins; during the test, the agitator blades, fan blades, and engine blades rotate synchronously with the shaft. Some of the salt solution spray generated during the agitation process splashes onto the orifice plate and arc plate, driving them to rise. After reaching a certain height, the orifice plate and arc plate fall back under gravity. This process is repeated to raise and lower the orifice plate and arc plate. The tiny droplets generated during the agitation process form a salt mist, which flows through the transparent inner compartment with the help of airflow, and then acts on the engine blades. When the salt mist rises to the inner wall of the hatch, the lower wall of the orifice plate, and the inner wall of the arc plate, it condenses into droplets and falls back into the salt solution.

Images