Marine atmosphere multi-factor-working condition coupling comprehensive simulation test system

Abstract

A marine atmosphere multi-factor-working condition coupling comprehensive simulation test system disclosed by the present invention comprises a temperature and humidity module and a salt mist atmosphere generation module, a vibration module is arranged at the lower part of a test box body, and the temperature and humidity module comprises a first refrigerating and heating unit and a second refrigerating and heating unit which are mutually independent. The first refrigerating and heating unit is used for a fast temperature change test in a non-salt mist atmosphere state, and a refrigerating and heating system of the first refrigerating and heating unit is made of a material with a good heat conduction effect; the second refrigerating and heating unit is used for a salt mist atmosphere test in a salt mist atmosphere state, a refrigerating and heating system of the second refrigerating and heating unit is made of a corrosion-resistant material, and the salt mist atmosphere generating module comprises a U-shaped air duct connected with an outlet of the second refrigerating and heating unit. According to the test system, the temperature-humidity-salt mist atmosphere-vibration environment factors can be applied or strengthened at the same time, and the marine atmosphere equivalent acceleration test and evaluation of the product are supported.

Description

Technical Field

[0001] The present invention relates to the field of equipment testing, and particularly to a test system for vehicle-mounted equipment or airborne equipment in a marine atmospheric corrosion environment. Background Art

[0002] At present, the comprehensive test for products is more commonly applied with a temperature-humidity-vibration three-in-one test system, and there are also temperature-humidity-salt-vibration and temperature-humidity-vibration-high (low pressure) four-in-one test systems. The existing temperature-humidity-salt-vibration test system uses salt spray for testing, and the formed salt spray can accelerate the corrosion of the metal surface. However, this type of system is not suitable for testing components that are more sensitive to water vapor, such as electronic products. Therefore, the present invention adopts a technical path for generating a salt spray atmosphere. Through a U-shaped air duct, the salt spray is heated and dehumidified, and water droplets are precipitated to obtain a salt spray atmosphere that can better simulate the marine atmospheric environment. Through the combined design with the temperature-humidity-vibration module, a temperature-humidity-salt spray atmosphere-vibration comprehensive simulation test system is formed, which can realize the comprehensive simulation test for electronic products and the whole machine containing electronic products.

[0003] Due to the corrosiveness of the salt spray to the environment, the surfaces of the equipment cabinet and the vibration module are both designed with corrosion resistance, and the key connection parts are designed with sealing. Due to the corrosive effect of the salt spray atmosphere, it is a major problem to select the evaporator for the temperature-humidity module. Due to the good thermal conductivity of copper, copper is usually selected as the evaporator for the temperature-humidity module. However, the corrosion resistance of copper in a salt spray environment is weak. Selecting a metal evaporator with better corrosion resistance will sacrifice a certain amount of thermal conductivity, thereby affecting the temperature change rate of the system. To achieve a high temperature change rate and conduct product assessment in an extreme temperature fluctuation environment such as airborne equipment, the system adopts a double independent air duct design and an automatically opened and closed cavity structure design to switch the air ducts during different tests, so as to achieve the large temperature change rate required for extreme temperature fluctuation environment assessment. At the same time, the titanium evaporator is retained for use in the salt spray atmosphere environment where the required temperature change rate is small, thereby achieving the purpose of a single device assessment for multiple scenarios of vehicle-mounted equipment or airborne equipment at one time. Summary of the Invention

[0004] In view of the deficiencies existing in the prior art, the present invention provides a four-condition coupling comprehensive simulation test system including temperature and humidity, salt spray atmosphere, and vibration, which can achieve rapid temperature change tests.

[0005] To achieve the above object, the following technical solution is adopted: An ocean-atmosphere multi-factor - working condition coupling comprehensive simulation test system, including a test box body and a control box body. A temperature-humidity-salt spray generating box body is provided between the test box body and the control box body or at the rear of the test box body. A temperature-humidity module and a salt spray atmosphere generating module communicating with the test box body are arranged in the temperature-humidity-salt spray generating box body. A vibration module is arranged at the lower part of the test box body. A control module for controlling the working states of the temperature-humidity module, the salt spray atmosphere generating module and the vibration module is arranged in the control box body. The test box body is installed on a lifting module. It is characterized in that: The temperature-humidity module includes an independent first refrigeration and heating unit and a second refrigeration and heating unit. The first refrigeration and heating unit is used for rapid temperature change tests in a non-salt spray atmosphere state, and the refrigeration and heating system of the first refrigeration and heating unit is made of a material with good heat conduction effect; The second refrigeration and heating unit is used for salt spray atmosphere tests in a salt spray atmosphere state, and the refrigeration and heating system of the second refrigeration and heating unit is made of corrosion-resistant material. By setting the independent first refrigeration and heating unit and the second refrigeration and heating unit, the rapid temperature change simulation test and the salt spray atmosphere simulation test can be respectively realized.

[0006] To further respectively realize the rapid temperature change simulation test and the salt spray atmosphere simulation test, the temperature-humidity module includes a first temperature-humidity generating chamber and a second temperature-humidity generating chamber arranged in parallel. A partition is arranged between the first temperature-humidity generating chamber and the second temperature-humidity generating chamber. A first air outlet communicating with the test box body is arranged at the upper part of the first temperature-humidity generating chamber. A first air return port communicating with the test box body is arranged at the lower part of the first temperature-humidity generating chamber. A first air outlet opening and closing door is arranged at the first air outlet. A first air return port opening and closing door is arranged at the first air return port; A second air outlet communicating with the test box body is arranged at the upper part of the second temperature-humidity generating chamber. A second air return port communicating with the test box body is arranged at the lower part of the second temperature-humidity generating chamber. A second air outlet opening and closing door is arranged at the second air outlet. A second air return port opening and closing door is arranged at the second air return port. The first air outlet opening and closing door and the first air return port opening and closing door are independently controlled from the second air outlet opening and closing door and the second air return port opening and closing door.

[0007] To further make the large particles and water droplets in the salt spray settle or adsorb, a salt spray outlet of the salt spray atmosphere generating module is arranged at the second air outlet of the second temperature-humidity generating chamber. The second air outlet and the salt spray outlet are connected with a U-shaped air duct. And a salt spray atmosphere discharge port is arranged at the top of the test box body. A condensate outlet is arranged at the bottom of the test box body.

[0008] Preferably, two first centrifugal fans, two first heaters, and two first refrigeration evaporators are arranged vertically in the first temperature and humidity generation chamber. The first air outlet is arranged between the first centrifugal fan and the first heater, and the first air return opening is arranged below the first refrigeration evaporator. Two second centrifugal fans, two second heaters, and two second refrigeration evaporators are arranged vertically in the second temperature and humidity generation chamber. The second air outlet is arranged between the second centrifugal fan and the second heater, and the second air return opening is arranged below the second refrigeration evaporator. Both the two first centrifugal fans and the two second centrifugal fans communicate with the outside.

[0009] To further avoid corrosion, the first heater and the first refrigeration evaporator are made of copper, the second heater and the second refrigeration evaporator are made of titanium alloy, the U-shaped air duct is made of titanium alloy, and the fan runners of the first centrifugal fan and the second centrifugal fan are made of titanium alloy and silicone rubber strips are embedded at the edges of the air duct outlets of the first centrifugal fan and the second centrifugal fan.

[0010] Preferably, the salt spray atmosphere generation module includes a salt spray liquid storage tank. A salt spray atmosphere generation pipeline is connected to the liquid outlet of the salt spray liquid storage tank. An adjusting peristaltic pump, a pressure reducing valve, a solenoid valve, a filter pressure regulating valve, and a salt spray nozzle are sequentially arranged on the salt spray atmosphere generation pipeline. The salt spray atmosphere generation module also includes an air compressor, and a high-pressure gas outlet of the air compressor is arranged at the outlet of the salt spray nozzle.

[0011] To further avoid corrosion, the vibration module includes an electric vibration table body. A centralized air inlet is arranged on the upper cover of the electric vibration table body, and a flow regulating valve is arranged at the centralized air inlet. The reversing motor of the electric vibration table body adopts a sealed housing, and the circuit boards and electrical components of the motor control reversing box and the moving coil automatic centering control box are concentrated in an anti-corrosion junction box. The cable outlet adopts an anti-corrosion cable clamping and sealing joint.

[0012] Preferably, the control module includes a computer, integrated control software, a vibration module controller, a temperature and humidity module controller, and a salt spray atmosphere generation module controller, as well as temperature sensors, humidity sensors, wind speed sensors, and vibration acquisition sensors arranged in the test chamber. The temperature and humidity module controller is controlled by RS-232, RS-485, and network communication interfaces. The salt spray atmosphere generation module controller is controlled by RS-232, RS-485, and network communication interfaces. The vibration module controller is connected to the computer through a high-speed standard Ethernet interface to control the vibration table Beneficial effects

[0013] 1. The present invention realizes the integration of temperature-humidity-salt spray atmosphere-vibration functions for the first time, can achieve the equivalent acceleration simulation of the on-vehicle environment in the marine atmosphere, and simultaneously apply or strengthen the environmental factors of temperature-humidity-salt spray atmosphere-vibration, supporting the equivalent acceleration test and evaluation of the product in the marine atmosphere. The present invention is particularly suitable for carrying out the equivalent acceleration test and evaluation of the comprehensive marine atmosphere environment for products containing electronic devices and the like that cannot carry out traditional salt spray tests.

[0014] 2. The present invention can achieve rapid temperature change tests. Usually, equipment with salt spray test functions cannot achieve a large temperature change rate due to the limitation of the evaporator material (the general temperature change rate is generally 1-3 °C / min). Since the evaporator of this system adopts a dual-channel independent open-close sealing design, one of the channels can select an evaporator made of copper with a higher thermal conductivity, and at the same time, through the structural design, the corrosion of the evaporator by the salt spray atmosphere is effectively prevented and can be used when needed, and the temperature change rate can reach 10 °C / min. Therefore, the system can not only simulate the on-vehicle environment in the marine atmosphere but also achieve the rapid temperature change function, simulating the sudden temperature change environment that the product may encounter during transportation, storage, or use, such as evaluating the stability of airborne equipment and materials in an extreme temperature fluctuation environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a top view of the test system of the present invention; Figure 2 is a functional architecture diagram of the test system of the present invention; Figure 3 is a side view of the test system of the present invention; Figure 4 is a sectional view of the temperature-humidity-salt spray generating box body of the experimental system of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following further describes in detail the specific embodiments of the present invention with reference to the drawings, but the present invention is not limited to these embodiments. Any improvement or replacement based on the basic spirit of this embodiment still falls within the scope protected by the claims of the present invention.

[0017] Embodiment 1: As Figures 1-4 shown, this embodiment provides a multi-factor-condition coupling comprehensive simulation test system for the marine atmosphere, including a test box body 1 and a control box body 2. A temperature-humidity-salt spray generating box body 3 is provided between the test box body and the control box body or at the rear of the test box body. In this embodiment, the test box body and the temperature-humidity-salt spray generating box body can be designed as the same box body, but in the middle of the box body, it is divided into a test box body at the front and a temperature-humidity-salt spray generating box body at the rear by setting a partition board. A temperature-humidity module and a salt spray atmosphere generating module are arranged in the temperature-humidity-salt spray generating box body. A vibration module is arranged at the lower part of the test box body.

[0018] In this embodiment, the box body adopts a frame structure, and the width * depth * height of the box body is 2m * 2m * 1.5m. The box body is installed on the lifting module, and the lifting module is composed of a lead screw mechanism driven by a motor. The box body can hover at any position driven by the lead screw mechanism. The rear part of the lifting module is the control box body. The lifting module is connected to the control box body. The bottom of the control box body is provided with pulleys, and a horizontal slide rail is fixedly installed on the ground. The control box body and the lifting module can slide on the horizontal slide rail driven by a motor.

[0019] The vibration module 4 includes an electric vibration table body. A vertical vibration bottom plate 41 is arranged on the upper part of the electric vibration table body. A horizontal vibration bottom plate 42 is arranged on one side of the vibration table body. The electric vibration table body can be respectively connected to the horizontal vibration bottom plate or the vertical vibration bottom plate through a flipping motor. A temperature-humidity-salt spray test bottom plate 5 is further arranged on the other side of the horizontal vibration bottom plate. The bottom of the box body can be respectively connected to the vertical vibration bottom, the horizontal vibration bottom plate or the temperature-humidity vibration bottom plate through the horizontal slide rail to realize different tests.

[0020] In this embodiment, the temperature-humidity module includes an independent first refrigeration and heating unit and a second refrigeration and heating unit. The first refrigeration and heating unit is used for the rapid temperature change test in a non-salt spray atmosphere state, and the refrigeration and heating system of the first refrigeration and heating unit is made of a material with good heat conduction effect; the second refrigeration and heating unit is used for the salt spray atmosphere test in a salt spray atmosphere state, and the refrigeration and heating system of the second refrigeration and heating unit is made of a corrosion-resistant material.

[0021] Specifically, the temperature, humidity and salt spray generating box body is divided into two independent left and right first temperature and humidity generating chambers 7 and second temperature and humidity generating chambers 8 by a partition plate 6 in the middle. In the first temperature and humidity generating chamber, two first centrifugal fans 71, two first heaters 72 and two first refrigeration evaporators 73 are arranged from top to bottom. A first air outlet 74 is arranged between the first centrifugal fan and the first heater, and a first air return port 75 is arranged below the first refrigeration evaporator. The first air outlet and the first air return port are both communicated with the test box body, and a first air outlet opening and closing door is arranged at the first air outlet, and a first air return port opening and closing door is arranged at the first air return port. In the second temperature and humidity generating chamber, two second centrifugal fans 81, two second heaters 82 and two second refrigeration evaporators 83 are arranged from top to bottom. A second air outlet 84 is arranged between the second centrifugal fan and the second heater, and a second air return port 85 is arranged below the second refrigeration evaporator. The second air outlet and the second air return port are both communicated with the test box body, and a second air outlet opening and closing door is arranged at the second air outlet, and a second air return port opening and closing door is arranged at the second air return port. The two first centrifugal fans and the two second centrifugal fans are both communicated with the outside. In this embodiment, the first heater and the first refrigeration evaporator are made of copper material, the second heater and the second refrigeration evaporator are made of titanium alloy material, the fan runners of the first centrifugal fan and the second centrifugal fan are both made of titanium alloy material, and silicone rubber strips are embedded at the edges of the air duct outlets of the first centrifugal fan and the second centrifugal fan.

[0022] The centrifugal fan of the temperature and humidity module extracts air, then uses the heater and the refrigeration evaporator to adjust the temperature and humidity of the air to meet the test index requirements, and then enters the test box through the top air outlet to adjust the temperature and humidity of the test working chamber, and then returns to the temperature and humidity generating chamber through the bottom air return port and is adjusted by the refrigeration evaporator and the heater. In this way, it circulates forcibly repeatedly to balance the temperature and humidity adjustment. According to the feedback of the sensor and the result output by the PID automatic operation, the output of the temperature and humidity is controlled, and finally a dynamic balance is achieved to meet the specified test requirements.

[0023] The salt spray atmosphere generation module in this embodiment includes a salt spray atmosphere generation system and a natural sedimentation channel module. The salt spray atmosphere generation system includes a salt spray storage tank. The bottom of the salt spray storage tank is provided with a liquid outlet. A salt spray atmosphere generation pipeline is connected to the liquid outlet of the salt spray storage tank. An adjustable peristaltic pump, a pressure reducing valve, a solenoid valve, a filter pressure regulating valve, and a salt spray nozzle are sequentially arranged on the salt spray atmosphere generation pipeline. The salt spray atmosphere generation system further includes an air compressor. The high-pressure gas outlet of the air compressor is provided at the outlet of the salt spray nozzle. The natural sedimentation channel module includes a U-shaped air duct 9. A flow guiding component is arranged in the U-shaped air duct. The U-shaped air duct is arranged in the test chamber. The air inlet of the U-shaped air duct is connected to the second air outlet. The air outlet of the U-shaped air duct is located in the upper part of the test chamber. Moreover, the outlet of the salt spray nozzle and the high-pressure gas outlet of the air compressor are both arranged at the air inlet of the U-shaped air duct. The salt spray atmosphere generation module precisely extracts the salt solution through a peristaltic pump, transports the salt solution to the nozzle at a set frequency, atomizes and sprays the salt water equally and at an equal frequency through high-pressure air flow, forming finer water droplets, which are more likely to fuse in the air to form the required salt spray atmosphere. By adjusting the frequency of the peristaltic pump, different amounts of salt spray atmosphere can be generated within the same time, thereby simulating salt spray environments with different concentrations. In this embodiment, the U-shaped air duct and the flow guiding component are processed from titanium plates, adopting a multi-pass tortuous channel filtration and sedimentation structure. During the test, the salt solution is transported to the nozzle at a set frequency and sprayed into the U-shaped pipeline together with the high-pressure gas generated by the air compressor to be fused with the warm and humid air, so that the large particles and water droplets in the salt spray settle or adsorb, further reducing the water droplet particles in the spray and forming a salt spray atmosphere in the channel. The salt spray atmosphere generation module further includes a salt spray atmosphere discharge port 10 at the top of the test chamber. The salt spray atmosphere is discharged through the salt spray atmosphere discharge port to avoid the residue of the salt spray atmosphere when the test function is switched. In addition, a condensate water outlet is also provided at the bottom of the test chamber for discharging condensate water.

[0024] The refrigeration unit in the present invention mainly includes a compressor, a drying filter, a condenser, a main refrigeration valve, a hot gas bypass valve, a cold bypass valve, an expansion valve, etc. The working principle of the refrigeration unit: When refrigeration is required in the test chamber, the compressor is used to send high-temperature and high-pressure gas into the air-cooled condenser to be converted into normal-temperature and high-pressure liquid, and this liquid is sent into the liquid storage tank (still normal-temperature and high-pressure liquid at this time), and then this liquid is sent into the drying filter (still normal-temperature and high-pressure liquid at this time). Since refrigeration is required at this time, the main refrigeration valve is opened and the hot gas bypass valve is closed, and this liquid is sent into the capillary tube to form low-temperature and low-pressure gas, and this gas is then sent into the refrigeration evaporator (still low-temperature and low-pressure gas at this time) and then back to the compressor. An over-temperature sensor is provided at the compressor end to sense the temperature at the compressor circuit for feedback adjustment of refrigeration. When the temperature at the compressor is sensed to be too high, after this information is fed back, the cold bypass valve is opened, and then the normal-temperature and high-pressure liquid is sent into the expansion valve to form low-temperature and low-pressure gas and then back to the compressor. If the design temperature has been reached in the test chamber and further cooling is not required, the hot gas bypass valve is opened and the main refrigeration valve is closed at this time, and the gas directly returns to the compressor. Evaporation pressure regulating valves are provided at the outlets of the first refrigeration evaporator in the first temperature and humidity generation chamber and the second refrigeration evaporator in the second temperature and humidity generation chamber to increase the evaporation temperature of the refrigerant, reduce the temperature difference between the refrigerant and the working chamber; shorten the evaporator pipeline, reduce the flow time of the refrigerant in the evaporator, so as to prevent the lubricating oil of the refrigeration compressor from deteriorating due to excessive temperature; use the cold bypass circuit to cool the main return air pipeline to prevent the excessive refrigerant vapor from damaging the compressor. The relative humidity is directly set and measured in RH%. The humidity is adjusted by the absolute humidity parameter in the air through the "conversion algorithm" in the control software.

[0025] The vibration module includes an electric vibration table body, a switching power amplifier, a heat exchanger, a horizontal vibration base plate, a vertical vibration base plate and corresponding accessories, etc. The vibration module is powered by an external power supply and controlled by a vibration controller. The vibration controller gives a control signal to the power amplifier, and the power amplifier outputs to the vibration table body to conduct a vibration test; the heat exchanger cools the vibration table in a timely and effective manner, and at the same time, secondary cooling is carried out by external circulating cooling; the oil source provides continuously circulating high-pressure oil for the horizontal slide table. The electric vibration table body is mainly composed of an excitation, a moving coil and its support and guidance, a trunnion vibration isolation mechanism, a welding support, a table body steering mechanism, etc. In the moving coil and its support and guidance, air springs are used for support, and upper and lower groups of guide wheels are used for double-point support and guidance, so that the vibration waveform of the workbench surface is good and the acceleration distortion is small; in the trunnion vibration isolation mechanism, four air springs are also used for vibration isolation, and a linear bearing guidance device is also used, with a large load-bearing capacity and good structural rigidity; in terms of the cooling of the table body, since the table body generates a large amount of heat, a two-stage water cooling unit is adopted, which greatly improves the cooling efficiency of the table body; the welding support adopted ensures good overall machine rigidity, convenient installation and debugging, and enables the entire test system to have a large acceleration and a high working frequency; due to the large weight of the table body, an electric table body steering mechanism is adopted, making the table body steering more convenient and easier. In the water-cooled vibration unit, the cooling pipe network is respectively distributed in the excitation coil, the drive coil, the short-circuit ring, the drive lead-out wire and the degaussing coil, truly ensuring the reliable and effective cooling of each heat-generating component. The vibration module will be used in conjunction with a temperature, humidity and salt spray atmosphere module with a corrosive environment. During the use process, the corrosion concentration in the surrounding environment of the equipment will increase. The vibration table is prone to corrosion when working in a corrosive environment for a long time, affecting the normal operation of the equipment. To meet the requirements, an improved design is carried out on the vibration table, that is, a sealed anti-corrosion table body is adopted. The electric actuator and control components all adopt a sealed structure and are installed in an anti-corrosion sealed box, and the cable outlets all adopt anti-corrosion cable clamping and sealing joints for sealing. The vibration table body is a sealed structure, maintaining its gas pressure higher than the external ambient atmospheric pressure to prevent the entry of external corrosive gases. Its main working principle is to fill clean air inside the vibration table body and maintain an appropriate positive pressure so that external corrosive gases cannot enter the inside of the table body, thereby achieving the purpose of anti-corrosion. The upper cover is redesigned, and the dispersed air inlet is adjusted to a centralized air inlet. The air intake volume is adjusted through a flow regulating valve at the air inlet according to actual needs to ensure that the internal pressure is higher than the external pressure. The vibration table turning motor adopts a sealed housing, which can prevent corrosive gases from entering the inside of the motor and causing corrosion, ensuring the normal operation of the equipment. All circuit boards and electrical components in the motor control turning box and the moving coil automatic centering control box are concentrated in an anti-corrosion junction box, and all cable outlets adopt anti-corrosion cable clamping and sealing joints. The turning control of the motor is controlled by an anti-corrosion master controller, which can effectively prevent corrosion.

[0026] The vibration module tabletop needs to work in a composite environment such as a salt spray atmosphere, temperature, humidity, etc. Therefore, the tabletop needs to be corrosion-proofed. The main corrosion-proofing processes include the following points: ① Improve the structural design. Each tabletop is connected to the bottom plate of the environmental chamber using corrosion-resistant waterproof cloth, and the tabletop is higher than the top surface of the bottom plate. The accumulated water formed on the tabletop can flow along the waterproof cloth to the bottom plate of the environmental chamber and then be discharged through the drainage holes on the bottom plate, effectively avoiding a large amount of accumulated water on the tabletop and corroding the tabletop for a long time. ② Measures to prevent galvanic corrosion. In a salt spray environment, galvanic corrosion is extremely likely to occur between different metal components in close contact. The metal components inside the tabletop components mainly include the tabletop, waterproof cloth pressing plate, threaded bushings, and various fastening screws, etc. Among them, the waterproof cloth pressing plate, threaded bushings, and various fastening screws are all made of the same stainless steel material, which can prevent galvanic corrosion between them. The contact surfaces between the tabletop and other metal components all have insulating layers, including high-temperature epoxy glue, waterproof cloth, etc., which can greatly reduce the phenomenon of galvanic corrosion. ③ Surface corrosion protection. After micro-arc oxidation treatment of the tabletop, a heavy protection coating is sprayed, and the wear resistance, corrosion resistance, high-temperature resistance, etc. of the material surface are greatly improved. Except for the tabletop, other system components directly in contact with the salt spray environment are treated with micro-arc oxidation and heavy protection coating.

[0027] The control module includes a computer, integrated control software, vibration module controller, temperature and humidity environment module controller, salt spray atmosphere module controller, various data control and acquisition sensors such as temperature, humidity, wind speed, vibration, and a printer, etc. The temperature and humidity environment module provides simulation of temperature (high temperature and low temperature) and humidity environments. Its controller uses RS-232, RS-485, and network communication to send relevant operation instructions to the temperature and humidity environment module controller for parameter setting and real-time operation control, and at the same time sends the test operation process, thereby realizing the real-time control of the temperature and humidity environment module. The vibration module mainly completes various vibration tests such as random, sine, and impact. The vibration test process is mainly completed by the vibration controller. The vibration controller is connected to the computer using a high-speed standard Ethernet interface to control the vibration table. The integrated control module establishes a connection with the vibration test control module through a high-speed standard Ethernet interface, and uses the vibration controller interface function to realize the control operation and data acquisition of the vibration controller. The vibration test operation and process control can be realized on the computer of the integrated control module. The salt spray atmosphere module is mainly used to simulate a high salt spray atmosphere environment under marine atmosphere. Like the temperature and humidity environment module, its controller also uses RS-232, RS-485, and network communication interfaces. Using its open communication interface protocol, the integrated control and data acquisition module can send relevant operation instructions to the salt spray atmosphere module for parameter setting and real-time operation control, and at the same time send the test operation process, thereby realizing the real-time control of the salt spray atmosphere module.

[0028] As one of the implementation manners in this embodiment, a heat preservation layer is provided outside the test chamber. The heat preservation material of the heat preservation layer adopts rigid polyurethane rigid foam + glass fiber, and the door seal of the chamber adopts a silica gel sealing strip. A main power protection circuit breaker, a power supply cable, a water supply pipe, a drain pipe and a cooling circulation water supply pipe are arranged at the back of the test system in this embodiment.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A marine atmosphere multi-factor-operating condition coupling comprehensive simulation test system, comprising a test box and a control box, a temperature and humidity salt spray generating box is provided between the test box and the control box or at the rear of the test box, a temperature and humidity module and a salt spray atmosphere generating module which are in communication with the test box are provided in the temperature and humidity salt spray generating box, a vibration module is provided at the lower part of the test box, a control module which controls the working states of the temperature and humidity module, the salt spray atmosphere generating module and the vibration module is provided in the control box, the test box is installed on a lifting module, and is characterized in that: The temperature and humidity module includes a first refrigeration and heating unit and a second refrigeration and heating unit that are independent of each other. The first refrigeration and heating unit is used for rapid temperature change tests in a non-salt fog atmosphere, and the refrigeration and heating system of the first refrigeration and heating unit is made of a material with good thermal conductivity; the second refrigeration and heating unit is used for a salt fog atmosphere test in a salt fog atmosphere, and the refrigeration and heating system of the second refrigeration and heating unit is made of a corrosion-resistant material.

2. The marine atmosphere multi-factor-operating condition coupling comprehensive simulation test system according to claim 1, characterized in that: The temperature and humidity module includes a first temperature and humidity generating chamber and a second temperature and humidity generating chamber arranged in parallel, a partition is arranged between the first temperature and humidity generating chamber and the second temperature and humidity generating chamber, a first air outlet communicating with the test box is arranged at the upper portion of the first temperature and humidity generating chamber, a first return air outlet communicating with the test box is arranged at the lower portion of the first temperature and humidity generating chamber, a first air outlet opening and closing door is arranged at the first air outlet, and a first return air outlet opening and closing door is arranged at the first return air outlet; a second air outlet communicating with the test box is arranged at the upper portion of the second temperature and humidity generating chamber, a second return air outlet communicating with the test box is arranged at the lower portion of the second temperature and humidity generating chamber, a second air outlet opening and closing door is arranged at the second air outlet, a second return air outlet opening and closing door is arranged at the second return air outlet, and the first air outlet opening and closing door and the first return air outlet opening and closing door are independently controlled from the second air outlet opening and closing door and the second return air outlet opening and closing door.

3. The marine atmosphere multi-factor-operating condition coupling comprehensive simulation test system according to claim 2, characterized in that: A salt fog outlet of a salt fog atmosphere generating module is provided at the second air outlet of the second temperature and humidity generating chamber, a U-shaped air duct is connected to the second air outlet and the salt fog outlet, a salt fog atmosphere discharge port is provided at the top of the test box, and a condensed water outlet is provided at the bottom of the test box.

4. The marine atmosphere multi-factor-operating condition coupling comprehensive simulation test system according to claim 3, characterized in that: The first temperature and humidity generating chamber is provided with two first centrifugal fans, two first heaters and two first refrigeration evaporators from top to bottom, the first air outlet is arranged between the first centrifugal fan and the first heater, and the first return air outlet is arranged at the lower part of the first refrigeration evaporator; the second temperature and humidity generating chamber is provided with two second centrifugal fans, two second heaters and two second refrigeration evaporators from top to bottom, the two air outlets are arranged between the second centrifugal fan and the second heater, the second return air outlet is arranged at the lower part of the second refrigeration evaporator, and the two first centrifugal fans and the two second centrifugal fans are both communicated with the outside.

5. The marine atmosphere multi-factor-operating condition coupling comprehensive simulation test system according to claim 4, characterized in that: The first heater and the first evaporator are made of copper, the second heater and the second evaporator are made of titanium alloy, the U-shaped air duct is made of titanium alloy, the fan wheels of the first centrifugal fan and the second centrifugal fan are both made of titanium alloy, and silicone rubber strips are embedded in the edges of the air duct outlets of the first centrifugal fan and the second centrifugal fan.

6. The marine atmosphere multi-factor-operating condition coupling comprehensive simulation test system according to claim 5, characterized in that: The salt spray atmosphere generating module comprises a salt spray liquid storage tank, a salt spray atmosphere generating pipeline is connected to the liquid outlet of the salt spray liquid storage tank, an adjusting peristaltic pump, a pressure reducing valve, a solenoid valve, a filter pressure regulating valve and a salt spray nozzle are sequentially arranged on the salt spray atmosphere generating pipeline, and the salt spray atmosphere generating module also comprises an air compressor, and a high-pressure gas outlet of the air compressor is arranged at the outlet of the salt spray nozzle.

7. The marine atmosphere multi-factor-operating condition coupling comprehensive simulation test system according to claim 6, characterized in that: The vibration module includes an electric vibration table body, the upper cover of the electric vibration table body is provided with a centralized air inlet, and a flow regulating valve is arranged at the centralized air inlet, the flip motor of the electric vibration table body adopts a sealed housing, and the circuit boards and electrical components of the motor control flip box and the dynamic coil automatic centering control box are concentrated in the corrosion-resistant junction box, and the cable outlet adopts a corrosion-resistant cable clamping sealing joint.

8. The marine atmosphere multi-factor-operating condition coupling comprehensive simulation test system according to claim 7, characterized in that: The control module includes a computer, integrated control software, a vibration module controller, a temperature and humidity module controller, and a salt spray atmosphere generating module controller, as well as a temperature sensor, a humidity sensor, a wind speed sensor, and a vibration acquisition sensor arranged in the test box; the temperature and humidity module controller is controlled by RS-232, RS-485, and a network communication interface; the salt spray atmosphere generating module controller is controlled by RS-232, RS-485, and a network communication interface, and the vibration module controller is connected to a computer by a high-speed standard Ethernet interface to control the vibration table.

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