文献类型：期刊文献

中文题名：用于天然气流量测量的文丘里喷嘴临界流函数研究

英文题名：CRITICAL FLOW FUNCTION OF UENTTURI NOZZLE FOR MEASURING GAS FLOW

作者：谢启明[1];蔡祥兴[1]

机构：[1]华东理工大学机械工程系

年份：1996

卷号：16

期号：1

起止页码：59

中文期刊名：天然气工业

外文期刊名：Natural Gas Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：天然气;文丘里流量计;流量测量;临界流动方程

外文关键词：Natural gas, Venturi meter, Flow measuring, Criltical flow equation, Computer assisted desigh.

摘要：利用L—K方程和一维等熵流动假设,成功地求解了天然气在不同组分、温度和压力下的临界流函数(C.)值,该值与国际标准—ISO 9300对应数据非常接近。同时,指出了使用临界流文丘里喷嘴测量低温高压天然气时,某些易凝气体有可能在喉部析出而影响测量精度,应加以充分注意。
The gas critical flow function (C.) values at different composition,temperature and pressure are calculated by use of L-K equation and 1-D isoentropic flow assumption. The values are very approximate to the corresponding ISO 9300 data. It is suggested that when measuring the gases with low temperature and high pressure,some easily condensated gas is possibly precipitated at the throat of the nozzle and thus would influence the measuring accuracy.