氦的液化在低温超导技术的研究中是很重要的一环。极低温研究中所必需的冷源,在目前仍然是以 LHe 为主。LHe 的安全生产、供应、使用是大家很关心的课题,国内有70多台LHe 机安装在全国各地60多个单位,由于各种原因,能够按需要正常生产 LHe 的单位很少。设备利用率非常低,直接影响低温工作的开展。 The liquefaction of helium is a very important part in the research of cryogenic superconducting technology. Cold sources, which are necessary for cryogenic temperature studies, are still dominated by LHe. LHe safety production, supply, use is a subject of great concern to everyone, more than 70 Taiwan LHe machine installed in more than 60 units throughout the country, due to various reasons, to the normal production of LHe few units. Equipment utilization is very low, a direct impact on the development of low-temperature work.