摘要
截面含气率作为气液两相流动过程中的基本参数之一,对石油管道的开采、输运,核反应堆冷却塔的设计等过程具有重要意义。本文提出了基于激光诱导成像技术和高速摄录系统的截面含气率直接检测方法,有效的避免管道曲率和介质折射率导致的光学畸变。在河北大学多相流循环装置进行实验,测量了18个流量点,液相流量测量范围10~35 L/min,气相流量测量范围2.0~3.0 L/min。运用计量比对的思想,对两种检测技术获得的截面含气率值求取偏差并进行修正,最大偏差仅为0.01459。结果表明两种方法得到的截面含气率值具有较好的一致性,证明本文提出的荧光成像技术对气液两相分层流截面含气率的检测是有效的。
Void fraction as one of the basic parameters of gas-liquid two-phase flow is of great significance to the development and transportation of petroleum pipelines and the design of nuclear reactor cooling towers.This paper proposes a direct detection method of void fraction based on laser-induced fluorescence imaging technology and high-speed video recording system,which can effectively avoid optical distortion caused by pipe curvature and refractive index of the medium.Experiments were carried out on the multiphase flow circulation device of Hebei University,and 18 flow points were measured.The liquid flow measurement range is 10~35 L/min and the gas flow measurement range is 2.0~3.0 L/min.Using the idea of measurement comparison,the deviation of the void fractions obtained with two detection technologies is calculated and corrected,and the maximum deviation is only 0.01459.The results show that the void fraction values obtained with the two methods are in good agreement,which proves that the fluorescence imaging technology proposed in this paper is effective for the detection of gas-liquid two-phase stratified flow void fraction.
作者
韩棒棒
赵治月
赵俊雨
张真玉
方立德
Han Bangbang;Zhao Zhiyue;Zhao Junyu;Zhang Zhenyu;Fang Lide(School of Quality and Technical Supervision,Hebei University,Baoding 210046,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2021年第10期2-8,共7页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(61475041)
河北省自然科学基金(F2021201031)
京津冀协同创新共同体建设专项(20540301D)资助。
关键词
分层流
截面含气率
激光诱导荧光成像技术
高速摄录系统
stratified flow
void fraction
laser-induced fluorescence imaging technology
high-speed video recording system
