石油计量表自动计算的方法研究

Research on Automatic Calculating Method for Petroleum Measurement Meter

以GB/T 1885-1998《石油计量表》中20℃标准温度下的密度和体积修正系数为参考,依据IS0 91-1-1991国际标准,通过建立合理的数学模型和逻辑演算,阐述了石油和石油产品密度、体积修正系数的计算过程,使用EXECL办公软件的迭代功能,实现了石油和石油产品密度、体积修正系数的自动换算。计算结果与GB 1885-1998查表数据进行对比,20℃密度计算精度为±0.1 kg/m^3,VCF20计算精度为±0.000 1,满足使用需求。

Referring to the data of density and volume correction coefficient at 20℃in GB/T 1885-1998 "Petroleum Measurement Meter", and based on international standard IS0 91-1-1991, the calculation process of density and volume correction coefficient of petroleum and petroleum products is expounded by establishing a reasonable mathematical model and logical calculation, and the automatic conversion of the density and volume correction coefficient of petroleum and petroleum products is realized by means of iteration function of office software EXECL. Comparing the calculated results with the data of GB 1885-1998, the calculation precision of density and volume correction coefficient at 20℃ is ±0.1 kg/m^3 and ±0.0001 separately, which meet the demand of application.