基圆周长温度修正对立式罐容量影响的探讨

Discussion on the Influence of Base Circumference Temperature Correction on the Capacity of Vertical Tanks

立式金属罐容量的检定依据国家计量检定规程JJG168-2018《立式金属罐容量》。基圆周长是检定过程中最基本、最关键的数据,对外围尺法测量时基圆周长随温度变化时罐体的线性修正与实际变化量之间的差异进行探讨。通过理论计算发现两者有与泊松比相关联的差量,文中以不同类型的储罐进行数据计算、比较。

The verification of the vertical tank capacity is based on National metrological verification regulation JJG 168-2018.The base cireumference is the most fundamental and critical data in the verification process.Therefore,this paper discussed the differences between the linear correction and the actual variation when the base circumference varies with temperature was measured by the strapping method.The theoretical calculation found that there is a diference associated with Poisson's ratio between the two,In this paper,dfferent types of vertical tanks are used for data calculation and comparison.