梭式止回阀与旋启式止回阀流动特性的数值模拟比较分析

利用FLUENT软件,通过与旋启式止回阀比较,分析了梭式止回阀的流动特性。结果表明:梭式止回阀阀腔内压力均匀分布在阀瓣四周,阀瓣受力是轴对称的,没有产生漩涡,以及压力的波动也很少;且梭式止回阀在开度小于15%,流阻小,流动特性好,在即将关闭时,旋启式止回阀压力变化最大点的压力差不多是梭式止回阀的4倍;在开启瞬间,是梭式止回阀的2倍多,为此梭式止回阀不会产生很大的冲击,具有良好的防水锤特性。

Comparative Analysis of Flowing Property for Shuttle Check Valve and Swing Check Valve with Numerical Simulation

By using software FLUENT and compared with swing check valve,the flowing characteristics of shuttle check valve were analyzed.It was shown that around clove of shuttle check valve,the pressure is well-distributed,thus the clove is axially forced,and there is no eddy and pressure fluctuation is small.When shuttle check valve has 15% opening,it has good flowing characteristics and with small resistance.When on closing,the pressure at the point with maximum pressure change in swing check valve is around 4 times of that in shuttle check valve;when on opening,the pressure is more than 2 times of that in shuttle valve.Therefore,there is no large pressure impulse in shuttle check valve,and it has good feature in anti- water-hammer.