Study on Acoustic Characteristics of Internal Leakage Flow Field of Mechanical Valves in Natural Gas Pipelines
Taking a mechanical valve in the natural gas pipeline as the object of research,the ball valves with different specifications were selected,and the wavelet packet method was used to analyze energy of the valve's internal leakage acoustic signals so as to obtain internal leakage flow field's acoustic signal eigenvalues of the mechanical valve,including analyzing influence of the acoustic characteristics parame-ters of the mechanical valve at different pressures.The results show that,the parameters related to acoustic characteristics(peak frequency and root mean square)can be used as the internal leakage detection indica-tors to realize mechanical valve's internal leakage detection.
natural gas pipelinemechanical valveinternal leakage flow fieldacoustic characteristicswavelet packet analysis
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