液氦等密度压升的无损储存时间计算  

Non Destructive Storage Time Calculation of Liquid Helium with Isodensity Pressure Rise

作　　者：孙振中 高建强 陈光奇 吴辰睿 陈涛 SUN Zhenzhong;GAO Jianqiang;CHEN Guangqi;WU Chenrui;CHEN Tao(Jiangsu Serlng New Energy Technology Co.,Ltd.,Jiangyin 214400,China)

机构地区：[1]江苏深绿新能源科技有限公司,江苏江阴214400

出　　处：《低温与特气》2025年第1期19-22,26,共5页Low Temperature and Specialty Gases

摘　　要：密闭系统中的液氦进入等密度状态后,系统压力将沿着等密度线上升直至系统开放,这给液氦无损储存时间的计算带来复杂性。REFPROP V9.1软件可提供低温流体等密度状态下的热力学特征值计算,简化了等密度无损储存时间的计算。液氦无损储存时间的计算表明:采用GB/T 18443.7—2010国家标准和BS ISO 21014:2019国际标准计算方法得出的结果基本一致。等密度温度-压力曲线表明:与LNG和液氮相比,液氦在密闭系统中达到气液平均密度的时间更短、压升速率更快。REFPROP V9.1软件可为流体等密度工程设计提供便捷的计算方法。After the liquid helium in a closed system enters an isodensity state,the system pressure will rise along the isodensity line until the system opens,which brings complexity to the calculation of the non destructive storage time of liquid helium.The REFPROP V9.1 software can provide thermodynamic characteristic value calculations for cryogenic fluids under isodensity conditions,simplifying the calculation of non destructive storage time for isodensity fluids.The calculation of the non destructive storage time of liquid helium shows that the results obtained using the GB/T 18443.7—2010 national standard and BS ISO 21014:2019 international standard calculation methods are basically consistent.The isodensity temperature pressure curve indicates that compared to LNG and liquid nitrogen,liquid helium has a shorter time to reach the gas-liquid average density and faster pressure rise rate in a closed system.REFPROP V9.1 software can provide convenient calculation methods for fluid isodensity engineering design.

关 键 词：液氦 无损储存 等密度 整定压力 

分 类 号：T661[一般工业技术]