1805 オリフィス式流量計の水流ラインにおける導圧管の詰まり診断 : 圧力揺動と圧力伝達の遅れに基づく2つの診断手法(S24-1 流量計測の新たな展開(1),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

論文の詳細を見る
Flowmeter, especially orifice flowmeter, is one of the most important devices in process industry. Since the most frequent problem of orifice flowmeter at the operation site is the impulse line blockage, the diagnostics of impulse line blockage is required. In this paper, the effectiveness of two diagnostic methods, based on the pressure fluctuation and based on the delay of pressure transmission, are demonstrated. Though both methods work well in the steady state, the diagnostic method based on pressure fluctuation is getting more difficult to diagnose the blockage with increase of the pressure change rate. On the other hand, the diagnostic method based on the delay of pressure transmission is not influenced by increase of the pressure change rate, however, this method needs more computing resource. Hence, it is necessary to choose the diagnostic method in consideration of computing resource of field device and pressure change rate.
社団法人日本機械学会の論文
2008-08-02