双向通道式内增压过滤器自增压过程仿真

Simulation of Self-pressurized Process in the Bidirectional Channel Type Internal Pressurization Filter

设计了一种无需配置额外液压系统及驱动装置的双向通道式内增压过滤器。为了了解过滤器的自增压功能和过滤效果,以流固耦合理论为基础,利用计算流体力学软件CFX对过滤器的自增压过程进行了仿真。通过对过滤器自增压过程中不同时刻对称面处的压力云图、活塞位移随时间变化曲线以及活塞受力随时间变化曲线的分析,表明双向通道式内增压过滤器可以实现自增压的效果,并且在增压过程中活塞产生了高频振动,加速了固体颗粒物的分离,提高了过滤效率。

Without configure additional hydraulic system and drive,a bidirectional channel type internal pressurization filter was designed. Based on the fluid solid coupling theory,the self pressurization process of the filter was simulated by using the computational fluid dynamics software CFX to obtain the selfpressurized function and filter effects of the filter. Through the filter self-pressurization process in different time at the plane of symmetry of the pressure contours,piston displacement versus time curve and the piston force with time change curve analysis. The results showed that self supercharging effect of two-way channel type pressure filter was achieved,the high frequency vibration of boosting piston was produced,and the filtering efficiency was improved.