Accelerated aging evaluation test apparatus for miniature Stirling refrigerating machine

Abstract

The invention discloses a device for an accelerated life evaluation test of a miniature Stirling refrigerating machine. The device comprises a main power supply, an electric cabinet, a refrigerating machine, an oscilloscope, a vacuum pump, an electromagnetic valve, a refrigeration load, a heating power supply, a high-low temperature test box, a power meter, a data acquisition device, self-programming data acquisition software and a computer. The main power supply is connected to the electric cabinet and the refrigerating machine, the oscilloscope is connected to the stroke waveform output endof the electric cabinet, the refrigerating machine is positioned in the high-low temperature test box, a cold head vacuum chamber of the refrigerating machine is connected with the vacuum pump and the electromagnetic valve through a metal pipe bellows valve, the refrigeration load is connected with the heating power supply and the refrigerating machine, the power meter is connected with the refrigerating machine and the computer, and the data acquisition device is connected with the refrigeration load, and the refrigerating machine and the computer. With the device, the number of experimentalprototypes is saved, the testing time is saved, and the cycles of development and task application are ensured, so that a space remote sensing technology can serve the society more quickly and significant economic and social benefits are provided.

Description

technical field [0001] The invention relates to an accelerated life evaluation test device for a miniature Stirling refrigerator. Background technique [0002] In recent decades, space infrared remote sensing detection technology based on infrared focal plane superconducting filter has played an important role in earth resource investigation, environmental monitoring and meteorological analysis, astronomical observation disaster monitoring and forecasting, communication and other application fields. The Stirling refrigerator has the characteristics of wide operating temperature range, large cooling capacity, high efficiency, small size, light weight, long life and high reliability. As the best cold source, it can meet the requirements of multiple infrared focal plane array superconducting equipment. The low temperature working environment required has been successfully applied to space exploration in large numbers. For space applications, long life and long-term reliability...

AI Technical Summary

Problems solved by technology

[0007] Therefore, it is necessary to carefully monitor the test data, and it has been found that the reliability and life characteristics of the operation process have been found. On the other hand, because the traditional life test is operated under normal conditions, it is impractical for development and application in terms of time. , there is an urgent need for a set of scientific and feasible accelerated life test methods. This patent aims at the pollution failure mechanism that restricts the long life of refrigerators, adopts accelerated test methods and conditions for high temperature operation, and a fully automatic real-time monitoring and recording space based on computer control. Experimental Apparatus for Operating Characteristic Parameters of Micro Stirling Refrigerators

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