波纹管J-T制冷器的可靠性改进研究  

Research on Reliability Improvement of Bellows J--T Cooler

作　　者：刘志勇 杨继飞 LIU Zhi-yong;YANG Ji-fei(North China Research Institute of Electro-Optics, Beijing 100015,China)

机构地区：[1]华北光电技术研究所,北京100015

出　　处：《红外》2021年第3期25-30,共6页Infrared

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。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.

关 键 词：自调J--T制冷器 波纹管 振动 

分 类 号：TB69[一般工业技术—制冷工程]