三峡升船机防撞缓冲液压系统部件内泄漏故障仿真分析

三峡升船机的防撞缓冲液压系统部件内泄漏是影响三峡升船机性能和可靠性的主要故障形式。文章选取了防撞缓冲液压系统的缓冲油缸和电液换向阀作为研究对象,分析了内泄漏问题产生机理,并在AMESim软件平台上分别搭建了缓冲油缸和电液换向阀的内泄漏仿真模型,进行了缓冲油缸和电液换向阀的间隙量、偏心率和油液黏度等不同参数对缓冲油缸和电液换向阀内泄漏的影响计算,得到了内泄漏的变化曲线。仿真结果表明,间隙量是影响其内泄漏的主要原因,保持合理的间隙量、正确选择油液黏度和保证安装精度可以有效减小内泄漏。

Simulation analysis of internal leakage faults in the components of the three gorges ship lifter's anti-collision hydraulic system

The internal leakage of the components of the anti-collision buffer hydraulic system of the Three Gorges Ship Lift is the main form of failure that affects the performance and reliability of the Three Gorges Ship Lift.The article selects the buffer cylinder and electro-hydraulic reversing valve of the anti-collision buffer hydraulic system as research objects,analyzes the internal leakage problem generation mechanism,and sets up the internal leakage simulation of the buffer cylinder and electro-hydraulic reversing valve on the AMESim software platform.In the model,the influence of different parameters such as the clearance amount,eccentricity and oil viscosity of the buffer cylinder and the electro-hydraulic reversing valve on the internal leakage of the buffer cylinder and the electro-hydraulic reversing valve was calculated,and the variation curve of the internal leakage was obtained.The simulation results show that the amount of clearance is the main reason that affects its internal leakage.Maintaining a reasonable amount of clearance,correctly selecting the viscosity of the oil,and ensuring the installation accuracy can effectively reduce the internal leakage.