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Pressure-reducing devices such as protective valves, control valves and chokes can create high levels of high-frequency acoustic waves at the outlet of the valve. These acoustic waves are propagated along the pipe, thereby generating vibrations, which in turn lead to fatigue failures, sometimes malfunctions set in within a few hours. In this research work, we have studied the main approaches of the vibroacoustic characteristics analysis that as a result has allowed us to develop the method of calculation of vibroacoustic characteristics, which would help to make the assessment of pipeline strength, of pipes noise and vibration levels more practicable. At this method different ways could be employed to get the desired results depending on the kind of data (measured vibroacoustic characteristics, geometric characteristics of the element, the input parameters). [ABSTRACT FROM AUTHOR]

Technical focus of the research is a discrete throttle valve (DTV) and gas pipeline. An extensive research of vibration and acoustic characteristics of the main pipeline of a gas distribution station was carried out. The acoustic noise power level radiated by the main gas pipeline and it's comparison with the strength criterion were made. The levels of vibration acceleration in different parts of the main gas pipeline were measured. On the basis of experimental data the possible causes of the acoustic-induced vibration are described, and measures for reducing vibration loading of a gas pipeline were proposed. [ABSTRACT FROM AUTHOR]

Technical focus of the research is a discrete throttle valve (DTV) and gas pipeline. An extensive research of vibration and acoustic characteristics of the main pipeline of a gas distribution station was carried out. The acoustic noise power level radiated by the main gas pipeline and it's comparison with the strength criterion were made. The levels of vibration acceleration in different parts of the main gas pipeline were measured. On the basis of experimental data the possible causes of the acousticinduced vibration are described, and measures for reducing vibration loading of a gas pipeline were proposed. [ABSTRACT FROM AUTHOR]

Pressure-reducing devices such as protective valves, control valves and chokes can create high levels of high-frequency acoustic waves at the outlet of the valve. These acoustic waves are propagated along the pipe, thereby generating vibrations, which in turn lead to fatigue failures, sometimes malfunctions set in within a few hours. In this research work, we have studied the main approaches of the vibroacoustic characteristics analysis that as a result has allowed us to develop the method of calculation of vibroacoustic characteristics, which would help to make the assessment of pipeline strength, of pipes noise and vibration levels more practicable. At this method different ways could be employed to get the desired results depending on the kind of data (measured vibroacoustic characteristics, geometric characteristics of the element, the input parameters). [ABSTRACT FROM AUTHOR]