德尔塔巴流量计K系数数值仿真研究
Numerical Simulation Study on K-coefficient of Delta Flow Meter
马云峰1
作者信息
- 1. 天津市计量监督检测科学研究院,天津 300192
- 折叠
摘要
德尔塔巴流量计采用独特的双龟翼对称型结构,具有压损小、结构简单、可靠性高等优点,已被广泛应用于石油、石化、电力及化工等众多领域.该文使用流体仿真软件对德尔塔巴流量计在不同入口流速下进行仿真,仿真结果表明德尔塔巴流量计的K系数不仅跟自身的结构有关系,还与流速成正比关系,在全量程测量范围内使用一个K系数将造成较大的测量误差.最后使用标准表法水流量标准装置对德尔塔巴流量计在不同流速下进行检定,结果表明在全量程内使用固定K系数将造成测量结果超差.因此需要对德尔塔巴流量计的K系数进行分段设置.
Abstract
The Delta flow meter adopts a unique double turtle wing symmetrical structure,which has the advantages of low pressure loss,simple structure,and high reliability.It has been widely used in many fields such as petroleum,petrochemical,power,and chemical engineering.This article uses fluid simulation software to simulate the Delta flow meter at different inlet flow rates.The simulation results show that the K-coefficient of the Delta flow meter is not only related to its own structure,but also directly proportional to the flow rate.Using a K-coefficient within the full range measurement range will cause significant measurement errors.Finally,the Delta flow meter was calibrated using a water flow standard device using the standard meter method at different flow rates,and the results showed that us-ing a fixed K-coefficient across the full range would result in measurement results exceeding the standard.Therefore,it is necessary to set the K-coefficient of the Delta flow meter in segments.
关键词
德尔塔巴流量计/K系数/仿真Key words
Delta flow meter/K-coefficient/simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据