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首页> 外文会议>Infrared Technology and Applications XXXIII pt.2; Proceedings of SPIE-The International Society for Optical Engineering; vol.6542 pt.2 >Life test result of Ricor K529N lWatt linear Cryocooler
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Life test result of Ricor K529N lWatt linear Cryocooler

机译：Ricor K529N lWatt线性冷冻机的寿命测试结果

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The authors summarize the results of the accelerated life testing of the Ricor type K529N 1 Watt linear split Stirling cooler. The test was conducted in the period 2003-2006, during which the cooler accumulated in excess of 27,500 working hours at an elevated ambient temperature, which is equivalent to 45,000 hours at normal ambient conditions, and performed about 7,500 operational cycles including cooldown and steady-state phases. The cryocooler performances were assessed through the cooldown time and power consumption; no visible degradation in performances was observed. After the cooler failure and the compressor disassembling, an electrical short was discovered in the driving coil. The analysis has shown that the wire insulating varnish was not suitable for such elevated temperatures. It is important to note that the cooler under test was taken from the earliest engineering series; in the later manufacturing line military grade wire with high temperature insulation was used, no customer complaints have been recorded in this instance Special attention was paid to the thorough examination of the technical condition of the critical components of the cooler interior. In particular, dynamic piston-cylinder seal, flying leads, internal O-rings and driving coil were examined in the compressor. As to the cold head, we focused on studying the conditions of the dynamic bushing-plunger seal, O-rings and displacer-regenerator. In addition, a leak test was performed to assess the condition of the metallic crushed seals. From the analysis, the authors draw the conclusion that the cooler design is adequate for long life performance (in excess of 20,000 working hours) applications.
机译：作者总结了Ricor K529N型1瓦线性分流斯特林冷却器的加速寿命测试结果。该测试在2003年至2006年期间进行，在此期间，冷却器在升高的环境温度下累积了超过27,500个工作小时，相当于正常环境下的45,000小时，并执行了大约7,500个工作循环，包括冷却和稳定运行。状态阶段。通过冷却时间和功耗评估了制冷机的性能。没有观察到性能下降。冷却器故障和压缩机拆卸后，在驱动线圈中发现电气短路。分析表明，电线绝缘漆不适合这种高温。重要的是要注意，被测冷却器取自最早的工程系列。在后来的生产线中，使用了具有高温绝缘的军用级电线，在这种情况下，没有记录到客户的投诉。特别注意了对冷却器内部关键组件的技术条件的彻底检查。特别是在压缩机中检查了动态活塞缸密封件，飞线，内部O形圈和驱动线圈。对于冷头，我们专注于研究动态衬套-柱塞密封，O形圈和置换器-蓄热器的条件。另外，进行了泄漏测试以评估金属破碎密封件的状况。通过分析，作者得出的结论是，冷却器设计足以满足长寿命（超过20,000个工作小时）的应用需求。

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