大型液压阻尼器仿真建模及静动态性能试验研究

液压阻尼器是一种对速度反应灵敏的振动控制装置,具有抗冲击和减振性能,被广泛使用在核电厂中来支撑主设备。大型液压阻尼器的正常运行对保证核电厂的安全运行有着重要意义。本研究借助(Advanced modeling environment for performing simulation of engineering systems)AMESim软件建立液压阻尼器的仿真模型并验证其准确性,针对阻尼器的不同工况开展仿真研究,以内泄漏为例对其进行故障模拟,并对阻尼器在正常工况、存在外泄漏工况、存在内泄漏工况、存在阻尼阀堵塞工况四种不同工况下的监测信号进行定性分析,得出其中的逻辑关系。为进一步的液压阻尼器故障诊断系统研究及实际应用提供理论基础和指引。

Simulation Modeling and Static and Dynamic Performance Test of Large Hydraulic Dampers

Hydraulic damper is a vibration control device which is sensitive to speed.It has the performance of shock resistance and vibration reduction,and is widely used in nuclear power plants to support main equipment.A normal operation of large hydraulic dampers is important to ensure the safe operation of nuclear power plants.In this paper,by using AMESim software,a simulation model of hydraulic dampers is established and its accuracy is verified.Simulation investigations of the hydraulic dampers are conducted for different operating conditions.And then a fault simulation is conducted by taking internal leakage as an illustrative example.In addition,qualitative analysis of monitoring signals of dampers under four different operating conditions,including normal condition,external leakage,internal leakage and damping valve blockage,is carried out,and their logical relationships are accordingly obtained.This work provides a research foundation for a further study of hydraulic damper fault diagnosis and its practical applications.