Theoretical Analysis and Simulation of Buffer Cylinder for Anti-Water Hammering

摘要

Aiming at the serious water hammer problem produced by check valve when the pump stops unexpectedly, an optimal method of using buffer cylinder to quick close check valve to reduce water hammer pressure is proposed. Through studying found that water hammer pressure is proportional to flow rate. And the buffer cylinder reduced the flow rate of check valve during the slow closing process, thus limiting the pressure of pipeline within an allowable range. In this paper, the theoretical analysis and AMESim simulation of the buffer process are designed to provide reference for further structural optimization.