Numerical Experiments on Performance Comparisons of Conical Type Direct-Acting Relief Valve—With or without Conical Angle in Valve Element and Valve Seat

This paper conducts numerical experiments on performance comparisons of CTDARV—with or without conical angle in the valve element and seat. The working principles three kinds CTDARV are introduced. simulation models established by utilizing AMESIM. Numerical CTDARV, with a seat, conducted obtained. results show that: (1) When all parameters VED, VSD, VEM, SS, CAVE&CAVS, OD have same value, respectively, CA-VE has highest stable pressure, CA-VE&VS displacement, CA-VS lowest displacement. pressure is significantly higher than that CA-VE&VS. displacement CA-VS, little difference. (2) With increase VED from 13 mm to 16 mm, remains constant, while both decreases. As VSD increases 3 6 decreases, decreases significantly. VEM 0.01 kg 0.04 kg, CA-VE, unchanged. SS 5 N/mm 20 N/mm, increases. CAVE&CAVS 15 degrees 60 degrees, 0.8 1.4 (3) will not change, increase. increases, 4 mm–6 increasing (4) velocity unchanged, oscillation gradually change. 30 lower gradually, changes little.