不同参数下多级降压疏水调节阀消声分析

多级降压套筒疏水调节阀的节流内件为穿孔套筒,可兼备消声和流量调节两种功能.针对多级降压疏水调节阀噪声过大的问题,基于对冲孔结构消声传递损失理论,对套筒孔径、套筒壁厚及套筒间隙等内件参数不同的疏水调节阀进行传递损失数值模拟计算,对比分析不同套筒孔径、不同套筒壁厚及不同套筒间隙对疏水调节阀消声效果的影响.研究结果表明:套筒...

Muffling Analysis of Pressure Drop Multi-stage Sleeve Steam Traps with Different Parameters

Multi-stage steam trap,whose throttling element is a perforated sleeve,can be used to reduce noise and regulate flow.In this paper,the problem of excessive noise of the multi-stage steam traps was studied.The muffling performances of multi-stage steam traps with different sleeve apertures,wall thicknesses and clearances were numerically simulated based on the transmission loss theory of punched muffler structures.The effects of different sleeve apertures,wall thicknesses and clearances on noise attenuation of the steam traps were compared and analyzed.The results show that the sleeve apertures have a slight influence on transmission loss,and the average transmission loss is only 1.4 dB.The wall thickness has a great influence on noise attenuation within the noise attenuation frequency range,and the average transmission loss is up to 3.8 dB.The clearances also play a significant role in the noise attenuation frequency range above 3000 Hz,and the average transmission loss is up to 3 dB.This study provides a basis for noise reduction optimization of pressure drop multi-stage sleeve steam traps.