应用声速核查延长超声波流量计标定

Extending the Calibration Period of Ultrasonic Flowmeter by Using Acoustic Velocity Verification

天然气作为主要的清洁能源之一,其计量相关的工作已经越来越多地受到重视。随着科技的进步和发展,应用超声波流量计来计量大口径、大流量、高压力天然气,已成为行业的主流发展趋势。气体流量计无法完成在线标定,这一问题一直影响着天然气计量系统的可用性。相关标准相继发布,提出了超声波流量计声速核查的功能,该功能的应用可以延长超声波流量计的标定时间。介绍了声速核查的原理和方法,阐述了声速核查在海上油气生产设施的天然气外输计量系统中的应用。研究表明,利用声速核查可提高整个计量系统的可用性,为生产节省成本、提高效率。

Natural gas is one of the main clean energy sources, so the measurement of natural gas becomes more and more important. With the technological development, ultrasonic flowmeter has become the major instrument in high flowrate, high pressure, large diameter gas measurement. However, the flowmeter of gas metering system cannot be calibrated on site, which raises the cost and decreases the usability. According to the related standards, acoustic velocity verification can extend the calibration period of ultrasonic flowmeter. We introduce the principle and method of acoustic velocity verification and describe the typical application of this technology on offshore gas platform, It is shown that acoustic velocity verification can improve the usability of the gas metering system, and thus reduce the production cost and increase the production efficiency.