摘要
为了更加精确地对输送管道泄漏进行检测,采用COMSOL软件对管道次声波检测泄漏信号的频谱、声压级及衰减规律进行数值计算研究。结果表明:管道泄漏信号的声压级峰值频率出现2个范围,即0.01~2Hz和10~12Hz;随着管道压力和泄漏孔径增大,泄漏点所产生的次声波信号幅度呈增大趋势,泄漏产生的声压级与平面波总功耗也同样增加。研究成果可为城市埋地输送管道泄漏的次声波检测定位方法提供理论依据。
In order to detect pipeline leakage more accurately, the signal spectrum, sound pressure level(SPL) and attenuation law of infrasonic obtained from the leakage detection were investigated by numerical method in this paper. The results show that the peak frequency of SPL of pipeline leakage signal has two ranges, i.e. 0.01~2 Hz and 10~12 Hz. With the increase of pipeline pressure and leakage point diameter, the signal amplitude of the infrasonic wave at the leakage point grows, the SPL and the total power consumption of plane wave generated by the leakage also increase. The research results can provide a theoretical basis for the infrasonic detection and location method of urban buried pipeline leakage.
作者
钟成
姚强
郑凯
张晓维
郝永梅
ZHONG Cheng;YAO Qiang;ZHENG Kai;ZHANG Xiaowei;HAO Yongmei(Changzhou Xin'ao Gas Development Co.,Ltd.,Changzhou Jiangsu 213164,China;School of Environmental&Safety Engineering,Changzhou Univers让y,Changzhou Jiangsu 213164,China)
出处
《安全》
2022年第10期60-65,共6页
Safety & Security
基金
江苏省重点研究发展计划资助(BE2018642)。
关键词
城市输送管道
泄漏
次声波
信号特征
衰减规律
urban pipeline
leakage
infrasonic
signal characteristics
attenuation law
作者简介
钟成(1975-),男,江苏常州人,研究方向为城市燃气工程技术。E-mail:zhongcheng@enn.cn;郑凯,副研究员;郝永梅,教授。
