阅读说明：本技术 一种真空状态下多应力综合环境可靠性试验系统 (Multi-stress comprehensive environment reliability test system under vacuum state ) 是由 葛俊 于 2020-12-17 设计创作，主要内容包括：本发明公开了一种真空状态下多应力综合环境可靠性试验系统,涉及多应力综合环境试验技术领域,包括气体干燥模块、预冷模块、制冷模块、加热模块和加湿模块,所述气体干燥模块分别连接预冷模块和加热模块,所述预冷模块连接制冷模块,且所述制冷模块和所述加热模块连接所述加湿模块并连接低气压舱,所述低气压舱内设有温湿度试验模块和振动模块,所述温湿度试验模块位于所述振动模块的上方,且所述低气压舱连接真空模块。本发明通过内置低气压舱内的温湿度试验模块和振动模块对目标进行测试,不仅测试效率好而且稳定性好,另外气密性高,制冷效果好,测试精度高,适应性强,能适应不同环境下的应用需求。(The invention discloses a multi-stress comprehensive environment reliability test system in a vacuum state, which relates to the technical field of multi-stress comprehensive environment tests and comprises a gas drying module, a precooling module, a refrigerating module, a heating module and a humidifying module, wherein the gas drying module is respectively connected with the precooling module and the heating module, the precooling module is connected with the refrigerating module, the refrigerating module and the heating module are connected with the humidifying module and a low-pressure cabin, a temperature and humidity test module and a vibration module are arranged in the low-pressure cabin, the temperature and humidity test module is positioned above the vibration module, and the low-pressure cabin is connected with the vacuum module. According to the invention, the target is tested through the temperature and humidity test module and the vibration module which are arranged in the low-pressure cabin, so that the test efficiency is good, the stability is good, in addition, the air tightness is high, the refrigeration effect is good, the test precision is high, the adaptability is strong, and the application requirements under different environments can be met.)

1. The multi-stress comprehensive environment reliability test system under the vacuum state is characterized by comprising a gas drying module (1), a precooling module (2), a refrigerating module (3) and a heating module (4), wherein the gas drying module (1) is respectively connected with the precooling module (2) and the heating module (4), the precooling module (2) is connected with the refrigerating module (3), the refrigerating module (3) and the heating module (4) are connected with a low-pressure cabin (5), a temperature and humidity test module (6) and a vibration module (7) are arranged in the low-pressure cabin (5), the temperature and humidity test module (6) is positioned above the vibration module (7), the low-pressure cabin (5) is connected with a vacuum module (8), the refrigerating module (3) and the heating module (4) are also connected with a humidifying module (9), and the humidifying module (9) is used for gas humidification and is transmitted to the temperature and humidity test module (6), the pre-cooling module (2) is further connected with an auxiliary cooling module (10), and the auxiliary cooling module (10) is used for providing ventilation cooling for the low-pressure chamber (5) for tested airborne equipment, wherein the ventilation cooling is performed on the tested airborne equipment;

the gas drying module (1) is used for drying gas and transmitting the gas to the pre-cooling module (2) and the heating module (4);

the pre-cooling module (2) is used for pre-cooling gas and transmitting the pre-cooled gas to the refrigerating module (3);

the refrigeration module (3) is used for refrigerating gas and transmitting the gas to the temperature and humidity test module (6);

the heating module (4) is used for heating gas and transmitting the gas to the temperature and humidity test module (6);

the humidifying module (9) is used for humidifying gas and transmitting the gas to the temperature and humidity test module (6)

The low-pressure chamber (5) is used for testing a low-pressure environment;

the temperature and humidity test module (6) is used for testing temperature and humidity environments;

the vibration module (7) is used for testing a vibration environment;

the vacuum module (8) is used for providing a low-pressure environment for the low-pressure chamber (5).

2. The system for testing the reliability of the multi-stress environment under the vacuum state according to claim 1, wherein the pre-cooling module (2) comprises a first pre-cooling unit and a second pre-cooling unit, and the first pre-cooling unit and the second pre-cooling unit are matched to pre-cool the gas.

Technical Field

The invention relates to the technical field of multi-stress comprehensive environment tests, in particular to a multi-stress comprehensive environment reliability test system in a vacuum state.

Background

The method aims to determine the comprehensive influence of temperature, humidity, vibration and height on the safety, integrity and performance of electronic and electromechanical equipment of an aircraft during ground and flight work. Tests carried out by the method can evaluate the capability of the equipment to withstand the comprehensive environmental effects of temperature, humidity, altitude, vibration and the like, and faults and failure modes which can be caused, and serve for improving the environmental adaptability and reliability of products through correction and design improvement.

According to the method, test equipment capable of simulating single factors is combined together to form a comprehensive test system, and single or superposed environmental stresses including vibration stress, temperature stress, humidity stress, altitude stress, electric stress, auxiliary cooling wind and other conditions are provided according to the real working conditions of the airborne equipment of the aircraft to accelerate the exposure of potential defects of the airborne equipment so as to expose the potential defects in a fault mode.

At present, an original equipment vibration table is arranged outside a test box, a sealing ring connected with the vibration table and a box body is easily affected by heat and vibration stress to cause a sealing problem, and in a temperature-height test, the temperature and the height of the original equipment vibration table are easily unstable, so that certain limitation exists.

The invention patent CN202010593855.5 of retrieval China discloses a radar product reliability test method, which comprises the following steps: the test system composition determining step: analyzing the characteristics of the radar product and determining the composition of a reliability test system; determining the overall experimental scheme: determining a reliability test scheme; determining the test time of the reliability test according to the test scheme; determining a test section of a reliability test; determining the detection time and detection items of the functions and performances of the radar product; determining a fault criterion of the radar product; the reliability test implementation step comprises: performing reliability test according to the determined test time and the test section, detecting the function and performance of the radar product at the determined detection time, and continuously developing and transmitting the radar product for a set time after the detection is finished at each detection time; and a test result analysis step, namely, receiving or rejecting judgment is carried out on the radar product according to the fault criterion of the radar product. The radar product reliability test system can realize the check of the radar product according to the full working state in the reliability test. But has certain limitation and can not adapt to the test of different products.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a multi-stress comprehensive environment reliability test system in a vacuum state, so as to overcome the technical problems in the prior related art.

The technical scheme of the invention is realized as follows:

a multi-stress comprehensive environment reliability test system in a vacuum state comprises a gas drying module, a precooling module, a refrigerating module and a heating module, the gas drying module is respectively connected with the precooling module and the heating module, the precooling module is connected with the refrigerating module, the refrigeration module and the heating module are connected with a low-pressure chamber, a temperature and humidity test module and a vibration module are arranged in the low-pressure chamber, the temperature and humidity test module is positioned above the vibration module, the low-pressure chamber is connected with a vacuum module, the refrigerating module and the heating module are also connected with a humidifying module, the humidifying module is used for humidifying gas and transmitting the gas to the temperature and humidity test module, the precooling module is also connected with an auxiliary cooling module, the auxiliary cooling module is used for providing ventilation cooling for the low-pressure cabin to the tested onboard equipment, wherein the auxiliary cooling module is used for providing ventilation cooling for the low-pressure cabin;

the gas drying module is used for drying gas and transmitting the gas to the pre-cooling module and the heating module;

the pre-cooling module is used for pre-cooling gas and transmitting the gas to the refrigerating module;

the refrigeration module is used for refrigerating gas and transmitting the gas to the temperature and humidity test module;

the heating module is used for heating gas and transmitting the gas to the temperature and humidity test module;

the humidifying module is used for humidifying gas and transmitting the gas to the temperature and humidity test module;

the low-pressure chamber is used for carrying out low-pressure environment test;

the temperature and humidity test module is used for testing temperature and humidity environments;

the vibration module is used for testing a vibration environment;

the vacuum module is used for providing a low-pressure environment for the low-pressure cabin.

Further, the pre-cooling module comprises a first pre-cooling unit and a second pre-cooling unit, wherein the first pre-cooling unit and the second pre-cooling unit are matched for gas pre-cooling.

The invention has the beneficial effects that:

the integrated gas drying module, the pre-cooling module, the refrigerating module, the heating module, the humidifying module and the vacuum module are integrated, and a target is tested through the temperature and humidity test module and the vibration module which are arranged in the low-pressure cabin, so that the integrated gas drying module, the pre-cooling module, the refrigerating module, the heating module, the humidifying module and the vacuum module are good in testing efficiency and stability, high in air tightness, good in refrigerating effect, high in testing precision and high in adaptability, and can meet application requirements in different environments.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic block diagram of a system for testing reliability of a multi-stress environment under vacuum according to an embodiment of the present invention.

In the figure:

1. a gas drying module; 2. a pre-cooling module; 3. a refrigeration module; 4. a heating module; 5. a low-pressure chamber; 6. a temperature and humidity test module; 7. a vibration module; 8. a vacuum module; 9. a humidifying module; 10. an auxiliary cooling module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

According to the embodiment of the invention, a multi-stress comprehensive environment reliability test system in a vacuum state is provided.

As shown in fig. 1, the system for testing reliability of a multi-stress comprehensive environment in a vacuum state according to the embodiment of the present invention includes a gas drying module 1, a pre-cooling module 2, a refrigerating module 3, and a heating module 4, where the gas drying module 1 is connected to the pre-cooling module 2 and the heating module 4, the pre-cooling module 2 is connected to the refrigerating module 3, the refrigerating module 3 and the heating module 4 are connected to a low-pressure chamber 5, a temperature and humidity test module 6 and a vibration module 7 are disposed in the low-pressure chamber 5, the temperature and humidity test module 6 is located above the vibration module 7, the low-pressure chamber 5 is connected to a vacuum module 8, the refrigerating module 3 and the heating module 4 are further connected to a humidifying module 9, the humidifying module 9 is used for humidifying gas and transmitting to the temperature and humidity test module 6, the pre-cooling module 2 is further connected to an auxiliary cooling module, the auxiliary cooling module 10 is used for providing ventilation cooling for the low-pressure chamber 5 to the tested onboard equipment, wherein;

the gas drying module 1 is used for drying gas and transmitting the gas to the pre-cooling module 2 and the heating module 4;

the pre-cooling module 2 is used for pre-cooling gas and transmitting the gas to the refrigerating module 3;

the refrigeration module 3 is used for refrigerating gas and transmitting the gas to the temperature and humidity test module 6;

the heating module 4 is used for heating gas and transmitting the gas to the temperature and humidity test module 6;

the humidifying module 9 is used for humidifying gas and transmitting the gas to the temperature and humidity test module 6;

the low-pressure chamber 5 is used for carrying out low-pressure environment test;

the temperature and humidity test module 6 is used for testing temperature and humidity environments;

the vibration module 7 is used for testing a vibration environment;

and the vacuum module 8 is used for providing a low-pressure environment for the low-pressure chamber 5.

The pre-cooling module 2 comprises a first pre-cooling unit and a second pre-cooling unit, wherein the first pre-cooling unit and the second pre-cooling unit are matched for gas pre-cooling.

By means of the technical scheme, the target is tested through the temperature and humidity test module 6 and the vibration module 7 in the built-in low-pressure cabin 5 through the integrated gas drying module 1, the pre-cooling module 2, the refrigeration module 3, the heating module 4, the humidification module 9 and the vacuum module 8, the testing efficiency is good, the stability is good, the air tightness is high, the refrigeration effect is good, the testing precision is high, the adaptability is strong, and the application requirements under different environments can be met.

The first pre-cooling unit and the second pre-cooling unit are matched to reduce the temperature of the drying gas to-30 ℃, the refrigeration module 3 adopts a turbine cooler, and the temperature of the gas sent into the test box can be reduced to-100 ℃ at the lowest.

In addition, the vibrating table and the temperature and humidity box are arranged in the low-pressure cabin, the sealing problem of equipment does not exist, the height and the temperature and humidity maintaining capacity are more excellent, the size of the working chamber is larger, and the system level test can be met.

In summary, according to the technical scheme of the invention, the target is tested through the integrated gas drying module 1, the pre-cooling module 2, the refrigerating module 3, the heating module 4, the humidifying module 9 and the vacuum module 8 and the temperature and humidity test module 6 and the vibration module 7 which are arranged in the low-pressure chamber 5, so that the test efficiency and the stability are good, in addition, the air tightness is high, the refrigerating effect is good, the test precision is high, the adaptability is strong, and the application requirements under different environments can be met.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.