中文摘要：

通过建立立式金属罐的罐底有限元模型,提出罐底标高修正法和附件修正法,减少立式金属罐装油后罐底变形对容量计量的影响,提高贸易计量交接的准确性。对容量为5 000 m3的立式金属罐,分别采用容量比较法与几何测量法进行测量试验分析;通过采用罐底标高修正和附件修正两种方法对几何测量法的测量结果进行修正,并与容量比较法的结果进行比较,验证两种修正方法的可靠性。

英文摘要：

The paper explores a volume correction method for bottom deformation of vertical metal tanks. A tank bottom elevation correction method and an accessory correction method were respectively proposed through the establishment of a finite element model for tank bottom to reduce the influence of tank bottom deformation on volume metrology resulted from oil loading,thus enhancing the accuracy of custody transfer. A vertical metal tank with a capacity of 5,000m3 was tested by volume comparison and geometric measurement and the analytical results were modified with the elevation correction method and the accessory correction method described above. Then,the modified results were compared with the results of volume comparison to verify that reliability of the two correction methods.