摘要
针对国内压水堆核电机组主给水高温高压(高温为240℃、高压为12.2 MPa)的工况特点,基于超声波时差法的测量原理,研制了一种满足现场工况质量流量测量、不确定度不大于0.3%的高精度超声波流量计。介绍了高温高压超声波流量计的工作原理、整机组成及各部件的设计参数,总结了适合高温高压环境的超声波流量计装置的设计思路。研究了超声波流量计测量结果不确定度分量来源,分析了各个不确定度的分量值,并进行了试验验证。结果表明,通过利用国内现有条件的流量标准装置进行试验,引入的不确定度分量评估方法得到了验证,符合高温高压超声波流量计测量的不确定度指标,实现了超声波流量计的研制目标。
In response to the operating characteristics of high temperature(240℃)and high pressure(12.2 MPa)in the main feedwater of domestic nuclear power plants,a high-precision ultrasonic flowmeter was developed based on the principle of time-difference method,which can achieve small power increase in the main feedwater flow measurement.The working principle,overall structure and design parameters of various components were introduced.The design ideas of the ultrasonic flowmeter scheme are summarized,the sources of uncertainty components in ultrasonic flowmeter measurement were proposed,and evaluation methods for uncertainty components in different situations were provided through experiments.The results indicate that the uncertainty components evaluation method introduced has been validated by utilizing existing flow standard devices in China,ensuring the uncertainty index of high temperature and high pressure ultrasonic flowmeter measurement,and achieving the goal.
作者
郭威望
杨鑑
刘海
刘志刚
王强
崔希炜
康志增
刘岩
GUO Weiwang;YANG Jian;LIU Hai;LIU Zhigang;WANG Qiang;CUI Xiwei;KANG Zhizeng;LIU Yan(Am Incorporation for Metrology and Testing Technology Services,Suzhou 215100,China;China Academy of Launch Vehicle Technology,Beijing 100076,China)
出处
《宇航计测技术》
CSCD
2024年第2期25-30,共6页
Journal of Astronautic Metrology and Measurement
关键词
高温高压
超声波流量计
不确定度
流体流量
High temperature and high pressure
Ultrasonic flowmeter
Uncertainty
Liquid flow rate
