摘要
采用ANSYS软件联用LMS Virtual.Lab软件对DN 300球阀在高压工况产生的流噪声进行研究。结果表明,球阀在小开度下由涡流引起涡激噪声,主要噪声频段为0~150 Hz,最大声压级为111.3 dB。针对阀芯及阀后直接声源区进行结构改进,发现两种改进方案均可降低阀门噪声。其中,阀芯加五层整流板,并在阀后添加叶片型抗涡旋装置的方案二降噪效果更显著,监测点的最大声压级由111.3 dB下降到84.6 dB。
Making use of ANSYS software in conjunction with LMS Virtual.Lab investigate the flow noise generated by DN 300 ball valve under high pressure conditions was implemented to indicate that,the ball valve generates vortex-induced noise due to eddy currents at small openings and has main noise frequency range of 0-150 Hz and a maximum sound pressure level of 111.3 dB.In addition,structural improvements were made to the valve core and the direct sound source area behind the valve to show that,both improvement schemes can reduce valve noise.Of them,the second scheme of adding a five layer rectifier plate to the valve core and a blade type throttling device behind the valve has the most significant noise reduction effect.The maximum sound pressure level at the monitoring point can decrease from 111.3 dB to 84.6 dB.
作者
张伟政
林华
黄文彬
ZHANG Wei-zheng;LIN Hua;HUANG Wen-bin(School of Petrochemical Engineering,Lanzhou University of Technology;Wenzhou Pump and Valve Engineering Research Institute,Lanzhou University of Technology)
出处
《化工机械》
2025年第6期983-991,共9页
Chemical Engineering & Machinery
关键词
球阀
高压工况
涡激噪声
降噪优化
结构改进
ball valve
high-pressure operating condition
vortex-induced noise
noise reduction optimization
structural improvement
