摘要
以真空粉末绝热的低温储罐为研究对象,搭建实验平台,对影响真空度的因素进行了实验研究。研究了5、10和30立方三种规格低温储罐在装砂前和装砂后的抽真空过程中,真空度随时间的变化规律。结果表明:影响真空度的因素主要是珠光砂的紧密度和材料漏气放气。珠光砂填充不实会引起局部漏热,加快真空度的破坏,在填充珠光砂时应使用振动泵。漏气与放气因素影响不可避免,因此在选择材料时应注意材料的结构特性和绝热性能。
Taking the vacuum powder insulated cryogenic storage tank as the research object,an experimental platform was set up,and the factors influencing the vacuum degree were experimentally studied. For three types( 5,10 and 30 cubic meter) of cryogenic tank,the variation rules of vacuum vs time was researched during vacuuming process before and after filling sand. The results show that the factors affecting the degree of vacuum are mainly the packing density of pearl sand and the deflation factor. Incompact filling of pear sand will cause local heat leak and speed up the destruction of the vacuum. The vibrating pumps should be used in pearl sand filling. Leakage and deflation factors are inevitable,so the structural properties and thermal insulation properties of materials should be considered.
作者
丁昌
应妮
黄宇巍
粟天玮
孙培栋
Ding Chang;Ying Ni;Huang Yuwei;Su Tianwei;Sun Peidong(Zhengzhou University of Light Industry,Zhengzhou 450002,China)
出处
《低温工程》
CAS
CSCD
北大核心
2018年第4期30-34,共5页
Cryogenics
基金
河南省产学研项目(22104010001)
郑州轻工业学院横向项目(24100000008)
郑州轻工业学院博士基金资助项目(13501050005)
众创空间孵化项目(13306000001)
关键词
真空粉末绝热
低温储罐
真空度
珠光砂
vacuum powder insulation
cryogenic storage tank
degree of vacuum
pearl sand