新型通用气氡脱气装置研制及应用

摘要

Water-water impact can produce a large number of bubbles,gas then separates and dis-solves in water.According to this principle,after repeated tests,we successfully developed a new type of degassing device for radon.Since the beginning of 2014,this new device has been installed at six seismic stations (stations with SD-3A auto-radon detector)in Qinghai province.After the operation for a long time,we found the observation data is stable and reliable.The device is suit-able for nationwide promotion and application,as it solves the problem of such devices having to steadily supply gas over a long time.%根据水流在一定的落差下撞击水体会产生大量气泡的原理，研制出一种新型气氡脱气装置。该装置相继在青海省德令哈台和湟源台进行试验，解决了极低水温(最低达3℃)井泉的脱气稳定性问题，对于极小流量(最小达0.06 L/s)的麻尼台泉点，首次使用仪器自带气泵抽气的办法并取得成功。试验完成后，推广应用到共和、格尔木、祁连及西宁4个台站，经过3个多月至2年的时间检验，上述6个台站的观测结果连续、准确、可靠，攻克了困扰我国地下流体气氡观测几十年来存在的脱气装置稳定性难题。该装置具有通用性，适合在全国范围内推广，还可以尝试作为气汞、氦气等气体观测的脱气装置使用。