http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김양석(Y.S. Kim),이도환(D.H. Lee),김대웅(D.W. Kim),박성근(S.K. Park),홍승열(S.Y. Hong) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
In spite of its simple design, structure and operating mechanism, swing check valves are one of the<br/> critical components which adversely affect the safety of the nuclear power plants if they fail to<br/> function properly. Therefore, it is important to evaluate the performance condition of the swing check<br/> valves in safety-related systems. The performance characteristics of swing check valves include opening<br/> characteristics, the minimum required flow velocity, the pressure drop at design flow, the disc stability,<br/> and the effect of the upstream disturbances. Among factors to identify the performance of a swing<br/> check valve, a method to evaluate the opening characteristics and the minimum required flow velocity,<br/> which guarantees to fully open the disc and hold the disc without motion, are presented to determine<br/> the operating region of the swing check valve, such as stable, tapping, or oscillation. Based on the<br/> determined operating region and opening characteristics, the simple methods of wear and fatigue<br/> analyses of the specific parts of the valve are also described.