液压启闭弧形闸门多领域工作特性分析及故障模拟

水工闸门系统由复杂的液压启闭系统和大型钢闸门金属构件组成,具有负载大和工况复杂的特点。大型金属构件腐蚀损伤、启闭传动故障等均会形成系统故障,使闸门故障模式复杂且难以预测。针对传统建模过程存在的闸门各子系统交互难、兼容差、复杂度高等问题,基于多领域统一建模方法,采用Simscape语言建立弧形闸门机电液多领域数字模型,通过开度曲线偏差控制策略和子系统转换接口实现联合仿真。参照某水工建筑按几何相似搭建实验平台,开展实验对闸门实时开度和伺服油缸驱动力进行动态校核;同时基于多领域模型对液压启闭机失效卡阻、油液泄漏和弧形门体损伤进行故障模拟。结果表明：所提出弧形闸门多领域耦合建模方法满足设定的误差阈值,具有较高的可靠度,可用于研究常见故障形式对闸门机液系统工作特性的影响,也为设计阶段液压系统选型校核及性能优化提供了参考。

Multi-field Working Characteristic Analysis and Fault Simulation of Hydraulic Radial Gate

The hydraulic gate system consists of a complex hydraulic hoist system and some large steel gate metal components,which is characterized by heavy load and complex working conditions.The corrosion damage of large metal components and failure of hoist transmission will lead to system failures,which make the gate failure mode complicated and difficult to predict.Aiming at the problems of difficult interaction,poor compatibility and high complexity of each subsystem of the gate in the traditional modeling process,based on multi-domain unified modeling method,Simscape language was used to establish the multi-domain digital model of the arc-shaped gate,through the opening curve deviation control strategy and subsystems conversion interface to realize the co-simulation.According to the geometrical similarity of a hydraulic building,an experimental platform was set up to carry out experiments to dynamically check the real-time opening of the gate and the driving force of the servo cylinder.At the same time,the failure of the hydraulic hoist,the leakage of oil and the damage of the curved body were simulated based on multi-domain model.The results show that the proposed multi-field coupling modeling method of radial gate satisfies the set error threshold and has high reliability,which can be used to study the influence of common faults form on the operating characteristics of the gate mechanical-hydraulic system,and also provides reference for the selection checking and performance optimization of the hydraulic system in the design stage.