【摘要】 外太空科学探测系统需要 4K以下制冷系统的支持 ,超流氦 (HeII)是在此温度区间的一种理想冷却剂 ,超流氦空间制冷系统的关键部件超流氦相分离器是利用超流氦的超流特性和热机械效应实现气液相分离的。根据超流氦相分离器研究的需要 ,研制了一套超流氦多孔塞气液相分离器的实验装置及其测量系统。利用该实验装置成功地完成了多批多孔塞样品的特性实验 ,获得了丰富的实验数据。介绍了实验装置方案选择、结构组成、实验方法及调试结果。更多还原

【Abstract】 Superfluid helium (HeII) is an excellent coolant for infrared detectors which need temperature down to <4 K . HeII phase separator is a crucial part of an infrared cryogenic system at zero-gravity. By using the fountain effect, it keeps the liquid phase separated from the vapor phase. An experimental equipment with its data acquisition system is designed, fabricated and debugged for the need of porous plug phase separator test. With this equipment several phase separators are measured and tested. Abundant experimental data are gained.The structure composition of the equipment, experimental technology of vapor-liquid phase separators and test results are introduced in detail.更多还原