多孔套筒式控制阀对于降低噪声有着很好的效果，而双层多孔套筒可以进一步提升降噪性能。为了研究套筒间距和套筒厚度对双层套筒式控制阀气动噪声的影响，建立了双层套筒式控制阀数值模型。对不同套筒间距及不同套筒厚度模型的模拟结果进行比较。结果表明，套筒间距对于双层套筒式控制阀的气动噪声影响较大，且随着套筒间距增大，在小开度情况下降噪效果更加明显；套筒厚度对于双层套筒式控制阀的气动噪声影响较小。本文的研究结果对于套筒式控制阀内套筒结构设计有着重要的参考意义。
Abstract
The porous sleeve control valve has a good effect on reducing noise, and the double-layer porous sleeve can further improve the noise reduction performance. In order to investigate the effects of the sleeve gap and sleeve thickness on the aerodynamic noise of the double-layer sleeve control valve, the numerical model of the double-layer sleeve control valve is established in the paper. The results indicated that the sleeve gap has a greater impact on the aerodynamic noise of the valve. With the increase of the sleeve gap, the noise reduction effect becomes more obvious at the small opening. The sleeve thickness has little effect on the aerodynamic noise of the valve. The research results in this paper have important reference significance for the sleeve design of the sleeve control valve.
关键词
双层套筒式控制阀 /
套筒厚度 /
套筒间距 /
气动噪声 /
宽频噪声 /
频谱特性
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Key words
double-layer sleeve control valve /
sleeve thickness /
sleeve gap /
aerodynamic noise /
broadband noise /
spectrum characteristic
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