産業用調節弁の特異騒音に関する実験的研究

概要

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Industrial control valves sometimes generate a peculiar noise under the low-pressure condition, although the noise problem of control valves becomes crucial in the case of high pressure. The purpose of the present study is to clarify the mechanism of a whistle-like tone generated under lowpressure conditions. We set up a model pipe-line which contained a globe valve plug of"equal percentage characteristics". The flow inside the control valve was visualized and observed with a high-speed video camera. We focused particular attention on the effect of the length of a seat ring. It was found in the present experiment that the length of the sea tring affects the peak frequency of noise generated from the control valve. We established an empirical formula between the frequency of whistle-like noise and the seat ring length.
一般社団法人日本機械学会の論文
1997-06-25