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波纹管J-T制冷器的可靠性改进研究
投稿时间:2020-09-28  修订日期:2020-10-27  点此下载全文
引用本文:刘志勇,杨继飞.波纹管J-T制冷器的可靠性改进研究[J].红外,2021,42(3):25~30
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作者单位E-mail
刘志勇 华北光电技术研究所 kojimorimoto@163.com 
杨继飞 华北光电技术研究所  
中文摘要:作为红外探测器组件的重要组成部分,波纹管J-T制冷器得到了广泛应用。在振动环境下长期使用时,作为自主调节元件的波纹管会出现流量异常、无法实现自调等故障。为了提高制冷器在长期振动环境中的可靠性,更改了制冷器结构,并创新性地使用了加装膜片弹簧与聚四氟乙烯导环的两点支撑结构。该结构对制冷器的弹性运动部件具有可靠的径向支撑,明显提高了制冷器的抗振性能,并在实践中取得了很好的效果。此外,本文中的设计研究也为将来提高波纹管J-T制冷器的抗振性能提供了思路。
中文关键词:自调J-T制冷器  波纹管  振动
 
Research on Reliability Improvement of Bellows J-T Cooler
Abstract:As the important part of infrared detector component, bellows J-T coolers have been widely used. When used in the long-term vibration environment, the bellows as the self-control element will suffer from abnormal flow rate and failure of self-control. In order to improve the reliability of the cooler in the long-term vibration environment, the structure of the cooler is changed in this paper. The two-point support structure with diaphragm spring and PTFE guide ring is innovatively used which has a reliable radial support for the elastic moving parts of the cooler. It significantly improves the anti-vibration performance of the cooler, and has achieved good effect in practice. In addition, the research on the design in this paper also provides ideas for improving the anti-vibration performance of bellows J-T coolers in the future.
keywords:self-control J-T cooler  bellows  vibration
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