<p>Pump-Valve-Pipeline is an important part of the power plant. It plays a key role in the normal operation of the reactor. The vibration of this system brings harm to itself, and also leads to the safety troubles and noise of other parts. As an important over-flow unit, the check valve is complex, adjusting unavailable and fluctuant, resulting in oscillation problems seriously. The study is to explore the characteristics of the internal flow field and fluctuation. Especially, the characteristics of internal flow field and the abnormal fluctuations are concerned during the spool movement process. There are many researches focusing on valve flow vibration under fixed opening, which can not reflect the real opening process of the valve. In this paper, the problem of abnormal fluctuation in internal flow-field for this marine check valve is studied. Based on the UDF dynamic grid technology, the transient motion law equation of the spool moving parts is established. As the fluid moving boundary, the transient motion analysis model of the check valve is constructed to realize the dynamic simulation of the valve group opening process. The vibration characteristics for the valve with different spring stiffness are studied, which can provide guidance for the regulation of the valve group in the system.</p>

Study on Flow-Induced Vibration of Self-Regulation Check Valve During Opening

Paper Proceedings: https://asmedigitalcollection.asme.org/PVP/PVP2021/volume/85314

ASME 2021 Pressure Vessels & Piping Conference (PVP2021)

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