国防科技大学学报2024，Vol.46Issue(4)：125-132,8.DOI:10.11887/j.cn.202404013
调节阀多测点空化诱导振动敏感性分析
Analysis of cavitation-induced vibration sensitivity in regulating valve using multiple measuring points
摘要
Abstract
Aiming at the difference in the cavitation sensitivity of the control valve at different measuring points of the regulating valve body,study on the difference of cavitation induced vibration and the cavitation sensitivity of different measuring points was carried out.A test platform for cavitation-induced vibration acceleration signal acquisition of regulating valve was built,and the acceleration signals of cavitation vibration of regulating valve at multiple measuring points were simultaneously collected.Two characterization parameters,the acceleration level ratio and the gravity frequency,were proposed.Frequency spectrum of the cavitation vibration signal of regulating valve was divided by the 1/3 octave frequency spectrum,and finally the frequency band most sensitive and location of measuring points to cavitation development was obtained.Results show that the vibration signals of measuring point on the same surface of the regulating valve body are similar,and the signals on different surface are significantly different.Vibration signals of the regulating valve are anisotropic.Development of cavitation extent mainly causes the vibration intensity of the frequency band above the center frequency of 10 000 Hz to increase.It is suitable for monitoring cavitation state of control valve.关键词
振动/调节阀/各向异性/加速度级比率/重心频率/1/3倍频程分析Key words
vibration/regulating valve/anisotropic/acceleration level ratio/gravity frequency/1/3 octave analysis分类
机械制造引用本文复制引用
刘秀梅,韦建秋,龙正,李贝贝,孙深圳..调节阀多测点空化诱导振动敏感性分析[J].国防科技大学学报,2024,46(4):125-132,8.基金项目
国家自然科学基金资助项目(51875559) （51875559）
江苏省优势学科平台资助项目 （）
