円形弁の研究 : 第9報, 平面座弁の特性に及ぼす有効水頭の影響, その1

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タイトル別名
  • Influence of Effective Head on the Characteristics of Flat-Seated Disc Valve, Part 1 : 9th Report, Experimental Research on Disc Valves
  • エンケイベン ノ ケンキュウ 9

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抄録

In order to answer the question asked by Prof. T. Uematsu in the discussion as to 7th Report of this research, we made a series of experiments with water on two disc valves, one d=28mm in diameter and the other, d=30.2mm in diameter. In these experiments lifting force P and discharge Q were measured at each valve lift l and effective head H was varied in 6 stages from 194 cm down to 9cm. From the results we can presume that, even if H is considerably larger than 194cm, P/H and Q/l√H would be higher or lower than the case where H=194cm by only a few per cent, as far as cavitation does not occur.

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