Abstract：To analyze the flow characteristics of leakage as well as the mechanism of self-excited vibration in valves, a method of characteristics was used to assess the effect of flexible valve leakage on the self-excited vibration in water-supply pump system. The water level of piezometric pipe in upstream of valve as a function of time was obtained. Two comparative schemes were proposed to simulate the process of self-excited vibration by changing the length, the material of the pipeline and the leakage of valves in the above pump system. It is shown that the length and material of the pipe significantly affect the amplitude and cycle of self-excited vibration as well as the increasing rate of the vibration amplitude. In addition, the leakage of the valve has little influence on the amplitude and cycle of self-excited vibration, but has a significant effect on the increasing rate of vibration amplitude. A pipe explosion accident may occur without the inhibiting of self-excited vibration.
斯静, 于永海, 王金星. 泵系统中柔性阀门漏水引起的自激振动分析[J]. 排灌机械工程学报, 2015, 33(8): 681-684.
Si Jing, Yu Yonghai, Wang Jinxing. Analysis of self-excited vibration caused by leakage of flexible valve in pump system. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(8): 681-684.
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