止回阀动态特性研究

论述了止回阀水击的产生过程以及止回阀动态特性的概念，介绍了止回阀动态特性的实验检测法和两种理论计算法，并将理论计算结果与实验检测结果进行比较，找出了理论计算造成误差的原因；根据实验检测结论，总结出动态特性的一系列明显特征。

Study on Dynamic Characteristics of Non-Return Valve

The paper introduces the process of water-hammer happening in non-return valve and the concept of dynamic characteristics of non-return valve (DCNRV). The method of test-measuring DCNRV and two methods of theory calculating DCNRV are detailed.The cause of difference between the three results is found by comparing the results of three kind of methods. The series of obvious features are exposed by analysing the test conclusions. At last, the apply of this research to engineering design and management is simply introduced.