大压力下活塞形变对有效面积的影响分析及不确定度评定应用
Analysis of the Influence of Piston Deformation on Effective Area Under High Pressure and Application of Uncertainty Evaluation
范彩兄 1王克荣 1金顺安 1方侃 1赵文强 1徐嘉伟1
作者信息
- 1. 国网青海省电力公司电力科学研究院,青海 西宁 810008
- 折叠
摘要
液体活塞式压力计是压力领域量值传递的重要标准器,其中活塞有效面积是判定活塞式压力计合格与否的重要指标.针对测量上限为 60 MPa的 0.05 级活塞式压力计,采用起始平衡法研究试验机理,测算不同测量压力下的被测活塞有效面积,研究形变对活塞有效面积的影响,利用线性回归法计算被测活塞零压面积,并搭建活塞有效面积不确定度模型,分析不确定度影响分量,评定各分量不确定度大小,计算被测活塞有效面积扩展不确定度,指导压力标准实验室量值传递工作准确可靠开展.
Abstract
The liquid piston pressure gauge is an important standard for transmitting values in the pressure field,and the effective area of the piston is an important indicator for determining the qualification of the piston pressure gauge.For the 0.05 level piston pressure gauge with a measurement upper limit of 60 MPa,the starting balance method is used to study the experimental mechanism,calculate the effective area of the tested piston under different measurement pressures,study the influence of deformation on the effective area of the piston,use linear regression method to calculate the zero pressure area of the tested piston,and build an uncertainty model for the effective area of the piston.The uncertainty influencing components are analyzed,the uncertainty size of each component is evaluated,and the expanded uncertainty of the effective area of the tested piston is calculated to guide the accurate and reliable transmission of measurement values in the pressure standard laboratory.
关键词
大压力/活塞形变/有效面积/不确定度Key words
high pressure/piston deformation/effective area/uncertainty引用本文复制引用
出版年
2024
NETL
NSTL
万方数据