摘要
为了研究高温高压过热液体在意外情况下发生的两相泄漏问题,基于两相泄漏试验平台,采用高速摄影仪和粒子动态分析仪(PDA),分析不同储存条件(储存压力、过热度)和泄漏条件(泄漏口尺寸)下,过热液体储罐泄漏过程中闪蒸射流行为特性。结果表明:闪蒸射流喷射角在泄漏过程中先逐渐增大,然后保持稳定,当罐内过热液体即将完全泄漏时,喷射角将发生突扩,随后迅速减小直至泄漏结束;泄漏过程中,闪蒸射流液滴三维速度随储存压力、过热度及泄漏口尺寸的增大而增大;过热度和泄漏口尺寸越大,液滴粒径越小,液滴粒径随着储存压力增大而增大。
Experiments were conducted to investigate the two-phase release of superheated liquid with high temperature and high pressure after accidental releases based on the two-phase release experiment system.The characteristics of flashing jets during the release under different storage and release conditions such as storage pressure,superheat,and nozzle diameter were studied by high-speed camera and PDA.Results show that the spray angle of flashing jet gradually increases first,then remains stable,and suddenly expands and decreases rapidly when superheated liquid is released completely.Droplets three-dimensional velocities increases with the increase of storage pressure,superheat and nozzle diameter,while droplets diameter decreases with the increase of superheat and nozzle diameter but increases with the increase of storage pressure.
作者
朱学良
宋泽阳
潘旭海
王希霖
汪涛
蒋军成
ZHU Xueliang;SONG Zeyang;PAN Xuhai;WANG Xilin;WANG Tao;JIANG Juncheng(College of Safety Science and Engineering,Nanjing Tech University,Nanjing Jiangsu 210009,China;Jiangsu Key Laboratory of Hazardous Chemicals Safety and Control,Nanjing Jiangsu 210009,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2019年第10期117-123,共7页
China Safety Science Journal
基金
国家重点研发计划项目(2016YFC0800100)
江苏省自然科学基金资助(BK20171005,17KJB62000).
关键词
过热液体
高温高压
两相泄漏
闪蒸射流
粒子动态分析仪(PDA)
superheated liquid
high temperature and high pressure
two-phase release
flashing jet
phase Doppler anemometry(PDA)
