论文部分内容阅读
一、概述音速文丘利喷嘴作为在线气体计量传递的标准,近年来,在国际上是一种较为重视和应用的新技术,虽然历史不算太长,但已被广泛应用于各工业部门,而且获得较高的经济效益。笔者单位对临界流技术研究已有一段时间,但对音速文丘利喷嘴研究始于1983年,1984年通过鉴定,并于1985年被华北油田用作供应北京市天然气的输气工程中,作为计量标准。同年11月,由中国计量科学研究院等单位参加下对该输气工程的两套孔板流量
I. Overview Sonic velocity Venturi nozzle as a measure of online gas transmission standards, in recent years, the international community is a more emphasis and application of new technologies, although history is not too long, but it has been widely used in various industrial sectors, and Get higher economic benefits. The author unit of critical flow technology research has been for some time, but the study of sonic velocity Venturi nozzle began in 1983, 1984 through the identification, and in 1985 by the Huabei oilfield gas supply project in Beijing for the supply of natural gas as a measure standard. In the same year in November, by the China Institute of Metrology and other units to participate in the gas transmission project of the two sets of orifice flow