摘要
为准确测量电站管道煤粉流量,设计了一种基于文丘里(V en turi)法的煤粉流量计。首先采用气固两相流数值模拟的方法,研究不同管型参数对文丘里法测量管道煤粉流量的影响,发现管型参数是影响稀相气固两相流测量结果的关键因素,并由此提出了文丘里管型设计的优化原则。然后从提高测量精度和保证测量稳定性2方面出发,对文丘里流量计进行了设计优化,获得了3种文丘里管的管型参数,可为管道煤粉流量测量的试验研究提供参考。
A Venturi flow meter was designed to accurately measure the mass flow rate of pulverized coal in power plant pipelines. Numerical simulations of the dilute turbulent gas-solid two-phase flow in a horizontal Venturi tube were used to study the effects of the Venturi tube geometry on the pressure distribution in the mixture. The results show that the Venturi tube geometry strongly influences the metering of the dilute gas-particle two-phase flow. The geometry can be optimized to improve the measurement precision and ensure stable measurements with the geometries of three types of Venturi tubes optimized for an experimental study of pulverized coal mass flow rate measurements.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第5期666-669,共4页
Journal of Tsinghua University(Science and Technology)
关键词
气固两相流
文丘里管
参数优化
gas-solid two-phase flow
Venturi tube
parameter optimization
