用于天然气流量计量的超声流量计

The Ultrasonic Flow Meter Used to Measure Flow Rate of Natural Gas

超声流量计量技术是一种崭新的天然气计量技术,其工作原理是根据声波在顺流方向与逆流方向传输时间所形成的时间差,利用数字技术获得高质量的测量结果。超声流量计具有投资省、性能可靠、计量准确等其它流量计不可比拟的优点。这种流量计在我国天然气工业中目前处于试用阶段,具有较大的使用空间。对超声流量计的测量原理、特点、使用范围、干标检定等方面作了较为系统的分析与介绍。

The ultrasonic flow meter is a kind of new technology used to measure the How rate ot natural gas. The high precision measurements can be obtained by the digital technology through the mechanism that the velocity of gas flow affects the transmission velocity of ultrasonic in fluid. This technology is characterized by less investment,trusty performance and high accuracy of measurement. This kind of flow meter has not widely applied in gas industry of China. The paper systemically introduces the ultrasonic flow meter in the relative systemic analysis of its principle, characteristics, application scope and dry-type calibration method.