仲氢含量测量方法研究

Research on the Measurement Method of Para Hydrogen Content

液氢生产过程中,需要监测液氢产品中的仲氢含量,以保障液氢产品满足长期储存的要求。当前液氢中仲氢含量主要利用正仲氢在热导率方面的差异采用气相色谱仪等设备进行离线分析,这种测量方法系统复杂、实时性较差,针对这种问题,从正仲氢的密度及核磁矩方面的物性差异入手,探索和研究新型的仲氢含量测量方法,为研制新型的、先进的仲氢含量测量设备奠定基础。

During the production process of liquid hydrogen,it is necessary to monitor the para hydrogen content of liquid hydrogen products to ensure the liquid hydrogen products meet the requirements of long-term storage.The current para hydrogen content of liquid hydrogen is mainly analyzed offline using equipment such as gas chromatograph based on the difference in thermal conductivity of ortho and para hydrogen.This measurement method has a complex system and poor real-time performance.To deal with this problem,explored and studied new methods for measuring para hydrogen content,basing on the physical differences in density and nuclear magnetic moment of ortho and para hydrogen,to lay the foundation for the development of new and advanced para hydrogen content measurement equipment.