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国家石油天然气大流量计量站于20世纪80年代从美国仪表公司引进的10m3钟罩式气体流量标准,其复现的流量范围为(10~1500)m3/h,不确定度为0.1%,是目前国内准确度等级最高的钟罩式气体流量标准,经国家质检总局授权,承担着全国天然气标准表的检定任务。但由于原检定控制系统陈旧,不仅人工劳动强度大,还存在效率低下、准确度低等问题,无法满足日益庞大的检定需求,因此开发出了一种现代化的钟罩式气体流量标准装置控制系统。一、钟罩式气体流量装置结构钟罩式气体流量标准装置的标准器是由上下移动
The 10m3 bell-type gas flow standard introduced by National Oil and Gas Metering Station from American Meter Company in the 1980s has a recurring flow range of (10-1500) m3 / h and an uncertainty of 0.1% Currently the highest level of accuracy of the bell bell-type gas flow standards, authorized by the State Administration of Quality Supervision, assume the national natural gas standard test table mission. However, because of the obsolescence of the original verification control system, not only the manual labor intensity is large, but also the problems of inefficiency and low accuracy can not meet the increasingly large verification requirements. Therefore, a modern bell-type gas flow standard device control system has been developed . First, bell-type gas flow device structure Bell-type gas flow standard device standard is up and down movement