화염 역화방지 밸브의 유동 및 진동방지 특성에 관한 연구

Abstract

Tanks on the tankers are necessary using back fire arresting valve for decreasing pressure and vacuum. These valves must prevent the passage of flame into tanks in tankers. In pressure side, discharge pressure with high speed at least 30m/s for preventing passage of flame. These valves have two kinds of pressure setting methods weight type and magnet type. Weight type is easy of oscillation. This study see difference of flow characteristic between weight and magnet type, using CFD and experiments. And then check oscillation two type of valves. Lastly, these valves are carried out flash back tests. At the results, when closure pressure decrease, discharging velocity also decrease. And weight type valve has lower closing pressure. Furthermore magnet type valve has superior oscillation characteristic.