旋启式止回阀关阀水锤优化分析

建立了双泵并联给水系统数学物理模型，针对旋启式止回阀关闭过程中形成的水锤进行编程计算，分析作用在止回阀阀板上的力矩以及阻尼扭簧力矩对关阀水锤的影响。结果表明：在双泵并联给水系统中，旋启式止回阀在关闭时会产生明显水锤，作用在阀板上的力矩对水锤的作用效果有一定影响，选择合适的止回阀阀板材料以及加装合适的弹簧可有效缓解水锤危害。

Optimization Analysis of Swing Check Valve Closing Induced Water Hammer

A mathematical-physics model of double pump parallel feed system was constructed. The water hammer was precisely calculated, which was formed in the closing process of swing check valve. And a systematic analysis was carried out to determine the influence of the torques from both valve plate and damping torsion spring on the valve closing induced water hammer. The results show that the swing check valve would distinctly produce the water hammer during the closing procedure in the double pump parallel feed water system. The torques of the valve plate can partly reduce the water hammer effect, and implying appropriate materials of valve plate and appropriate spring can effectively relieve the harm of water hammer.