摘要
阀门是高速暂冲式风洞的重要设备之一,受高速复杂气流影响,阀门容易产生疲劳、断裂和松动,导致风洞运行中断并产生重大损失。为此,本文以某高速暂冲式风洞调压阀为研究对象,提出了一种基于小波包变换分解阀门状态监测信息、以最大组分能量占比及其变化率进行阀门漏气故障诊断的方法,并采用数值模拟和实际测试分析手段进行了验证。研究结果表明,采用小波包变换可快速分解出阀门各部位振动监测信号的组分能量,故障部位的组分能量占比及变化率远高于其他部位,从而准确诊断并定位阀门泄漏故障。
Valve is one of the important equipment of high speed transient wind tunnel.Due to the influence of high speed and complex airflow,valve is prone to fatigue,fracture and looseness,which leads to the interruption of wind tunnel operation and heavy losses.For this reason,taking the pressure regulating valve of a high speed transient wind tunnel as the research object,a method based on wavelet packet transform to decompose the valve condition monitoring information,and to diagnose the valve leakage fault with the maximum component energy ratio and its change rate,is proposed,which is verified by numerical simulation and actual test analysis.The research results show that the component energy of vibration monitoring signal of each part of the valve can be decomposed quickly by wavelet packet transform,and the component energy ratio and change rate of the fault part are much higher than those of other parts,so the valve leakage fault can be accurately diagnosed and located according to this index.
作者
钟若溪
王锐
杨亨
易凡
周润
ZHONG Ruo-xi;WANG Rui;YANG Heng;YI Fan;ZHOU Run(China Aerodynamics Research and Development Center Institute of High Speed Aerodynamics,Mianyang 621000,Sichuan,China)
出处
《阀门》
2026年第1期107-114,共8页
Chinese Journal of Valve
关键词
调压阀
故障诊断
泄漏
小波包分解
pressure regulating valve
fault diagnosis
leakage
wavelet packet decomposition
