液氢真空输送管路内漏问题分析  

Analysis on leaking problem of a LH_2 transfer line with vacuum multilayer insulation

作　　者：高婉丽[1] 刘瑞敏[1] 王立生[1] 

机构地区：[1]北京航天试验技术研究所,北京100074

出　　处：《低温工程》2010年第2期60-62,共3页Cryogenics

摘　　要：针对大口径液氢真空输送管三通部分出现内漏的问题,现场采取外管发泡的方法作为补救措施。为论证这一方法的可行性,以试验为基础,对外管发泡后的真空输送管在多工况下进行传热学和热力学的分析计算,得出传热系数、冷量损失、温升等参数的变化规律和极限值。In order to solve the heat leakage of a LH2 transfer line with large diameter, the foaming method on the outer pipe was taken. To demonstrate the feasibility of this method, heat transfer analysis and thermodynamic analysis were done on the LH2 transfer line. The rules of variation and limit values of the heat transfer coefficient, cooling capacity loss and temperature rise were obtained.

关 键 词：液氢 传热学 冷量损失 

分 类 号：TB611[一般工业技术—制冷工程]