球形金属罐容量计算的研究与应用

Research and Application of Spherical Metal Tank Capacity Calculation

依据《JJG 642-2007球形金属罐容量检定规程》对球形金属罐容量的测量数据进行数据处理和容量计量表编制。详细介绍了应用空罐赤道内直径值、空罐竖向内直径值、赤道板罐壁厚度,及检定时罐内压力值和使用时工作压力值参与容量计算,设计出球形金属罐容量计量表计算软件。针对容量计量表编制过程中的"整间隔和非整间隔""正高度修正值和负高度修正值"4种组合,阐述了不同高度修正情况的数据处理过程和注意事项,并对球形金属罐容量检定记录和检定证书内容及容量表现场使用做了详细的描述。经测试比较,球形金属罐容量计算检定软件具有良好的交互功能,有效地提高了现场计量检定效率和操作可靠性,达到了预期的设计效果。

According to JJG 642-2007"Spherical metal tank capacity verification regulation",the measurement data of spherical metal tank capacity are processed and the capacity measurement table is prepared.This paper introduces in detail the application of the equatorial inner diameter value of the empty tank,the vertical inner diameter value of the empty tank,the thickness of the equatorial plate tank wall,the pressure value in the tank during verification and the working pressure value in use to the capacity calculation,and designs the calculation software of the spherical metal tank capacity meter.According to the four combinations of"integral interval and non-integral interval""positive height correction and negative height correction",the data processing process and points for attention in different height correction cases are described.The contents of capacity verification record and certificate of spherical metal tank and the use of capacity expression field are described in detail.By testing and comparison,the software of spherical metal tank capacity calculation and verification has good interactive function,which effectively improves the on-site metrological verification efficiency and operational reliability,and achieves the expected design effect.