Research on Acoustics Leakage Detection System in Natural Gas Pipeline;
输气管道泄漏音波检测信号处理的研究
The acoustic leak detection method in natural gas pipelines was investigated.
将音波检测方法应用于输气管道的泄漏检测,介绍了音波泄漏检测与定位的基本原理。
The newly imported SFY-C type sonic vibrating and fully automatic screening granulometer makes use of sonic vibration to force air to move in an enclosed box cavity with overlapped screens in it,and the vibrating air causes the sample sediment grains to move periodically and vertically,resulting in little plugging of screen openings.
新引进的SFY -C音波振动式全自动筛分粒度仪采用音波振动 ,使空气在一个密封的叠筛腔体中运动 ,震荡的空气使样品颗粒作周期的垂直运动 ,筛网的堵孔现象少 ;使用电磁铁垂直敲击 ,使团聚的颗粒分散 ,减少了筛网的磨损和颗粒被打碎的现象 ,大大提高了筛分效率 ,具有较好的可靠性和实用性 ,准确性高 ,稳定性好。