流体机械2023，Vol.51Issue(12)：1-8,8.DOI:10.3969/j.issn.1005-0329.2023.12.001
液氮-雾化水射流制备冰粒技术研究
Study on preparation of ice particles by liquid nitrogen atomized water jet
摘要
Abstract
In order to study the feasibility of ice particle abrasive preparation by liquid nitrogen low-temperature sedimentation method,the solidification model of tiny water droplets in a liquid nitrogen environment was established and verified,which provides a theoretical basis for the solidification time of water droplets in an ultra-low temperature environment;For the problem of the influence of heat transfer process structure on ice particle performance,the ice particle preparation system was built,and three water-liquid nitrogen dual atomization ice production structures of parallel down-flow type,parallel counter-flow type,and T-type mixed-flow type were designed,and the indoor experimental study was carried out on ice particle preparation technology on this basis.The results of the study show that the T-type mixed-flow dual atomization structure has the best ice production effect,and can prepare ice abrasives with average particle size of 146.1 μm,a temperature of-89.8℃,Mohs hardness of about 4 and almost 0 viscous force at the water-liquid nitrogen atomization flow rate ratio of 1:2.The research results lay the theoretical foundation for the development and application of ice particle jet in the surface cleaning industry.关键词
冰粒射流/冰粒制备/液氮雾化/磨料射流/清洗Key words
ice particles jet/preparation of ice particles/liquid nitrogen atomization/abrasive jet/cleaning分类
机械制造引用本文复制引用
胡静茹,黄中伟,李敬彬,陆华,张春林,陈昭廷,吴思彤,杨栋..液氮-雾化水射流制备冰粒技术研究[J].流体机械,2023,51(12):1-8,8.基金项目
国家重点研发计划项目(2021YFA0719101) （2021YFA0719101）
