摘要
将负压波法应用到天然气输气管道的泄漏检测与定位中,分析了影响负压波传播速度的因素,修正了定位公式,利用小波技术对负压波信号进行了消噪处理并捕捉了压力突降点,提高了检测灵敏度与定位的精度,仿真实验证明了此方法的有效性.
The use of negative pressure wave method in delivery pipelines of natural gas is investigated for their leak detection and allocation.The factors influencing the velocity of pressure wave propagation are analyses and a modified allocation formula is presented. Wavelet translation is also used to get the featured inflection point of pressure wave and suppress the noise for the signal of negative pressure wave as well. The accuracy and sensitivity of leak detection and allocation are improved with this method.
出处
《甘肃工业大学学报》
CAS
北大核心
2003年第4期84-87,共4页
Journal of Gansu University of Technology
基金
甘肃省自然科学基金(ZR 96 030)
关键词
天然气管道
管道泄漏
定位检测
小波变换
负压波
leak detection and allocation
negative pressure wave
wavelet translation
pipeline
