摘要
超声流量计的运行性能受外界噪声影响较大,将安装现场的噪声水平控制在流量计可接受范围内是保证计量精度的关键。在分析噪声来源的基础上,提出了多级调压支路设置、安装噪声管件等噪声控制技术。结合某天然气场站超声流量计运行现状,对导致计量失准的原因进行分析,提出调整计量调压支路设置方式、设置T型埋地管件的解决方案。从改造后的现场运行情况来看,超声流量计降噪效果较好,各声道运行性能、信噪比等参数均恢复到合理范围内,实现了准确计量。
Noise interference is an important factor affecting performance of ultrasonic flow meter. Conducted is analysis on noise sources and introduced are several kinds of commonly used noise control technologies. Combined with a typical case in production, analyzed are the causes affecting performance of ultrasonic flow meter and proposed is a reasonable solution. Operation results show that ultrasonic flow meter noise reduction effects are good and ultrasonic flow meter can accurately meter rate of flow after reconstruction.
出处
《天然气与石油》
2014年第3期60-62,12,共3页
Natural Gas and Oil
关键词
超声流量计
降噪
信号
信噪比
Flow meter
Noise reduction
Signal processing
SNR
