The noise of the regulating valve because of oriifcing, inlfuence the precision accuracy of the Ultrasonic Flowmeter. In order to improve the SNR of the Ultrasonic Flowmeter, There is a kind of T-Structure Pipe Fitting is used in The Fifth Gas Processing Plant. The article analyse the effect of this adhibition, present a method of improving SNR of The Ultrasonic Flowmeter.%超声波流量计广泛应用于苏里格气田天然气外贸交接工作,由于与超声波流量计串联使用的调节阀节流而产生的噪声对超声波流量计的正常工作产生了较大干扰,造成气体流量计量失准。本文通过第五天然气处理厂增加T型头后流量计的工作情况,对T型头在超声波流量计计量工作中的降噪性能进行了探讨。
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