JJG184—2012《液化气体铁路罐车容积》检定规程解析

Analysis of the National Verification Regulation JJG184-2012 Volume of Rail Tankers for Liquefied Gases

根据容量计量技术和铁路车辆制造技术的发展,对国家计量检定规程JJG 184—1993《液化气体铁路罐车容积》进行修订。通过比较JJG 184—1993和JJG 184—2012中计量性能要求、通用技术要求、计量器具控制等规程主要内容,重点分析容量比较法、车载液位计读数修正值测量、容积的压力修正等JJG184—2012中新增技术内容,以及在计量检定与计量操作实施过程中须考虑的问题。

National verification regulation JJG 184—1993 Volume of Rail Tankers for Liquefied Gases is revised according to the technical development of volumetric metrology and manufacture of railway cars. Upon comparing metrological requirements,general technical requirements and instrumental control in JJG 184—1993 with those in JJG 184—2012, the author focuses on the new contents in JJG 184—2012 including volumetric comparison method,the measurement for the correction value of the liquid level meter in the tank,the pressure-based volumetric correction. The problems in the implementation process of JJG 184—2012 which should be considered are interpreted.