円形弁の研究 : 第11報, 既報広幅弁座を有する平面座弁の性能の再検討

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タイトル別名
  • The Re-examination of Preceding Paper on the Characteristics of the Broader-seated Disc Valves : 11th Report, Experimental Research on Disc Valves
  • エンケイベン ノ ケンキュウ 11

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The present paper treats the results of experiment precisely performed on two disc valves, h' and i', having broader valve seat face. The diameter d of the valve i' is equal to the external diameter d1 of the valve seat face, that is, d=d1. Each characteristic curve for the valve i' has one discontinuous point. On the other hand the valve h' has a diameter d<d1, and on each characteristic curve for it there are two discontinuous points. The discharge Q and the lifting force P were measured, as before, at each valve lift l under a constant head H. This time, moreover, the pressure head h at the middle point of the valve seat face was measured by means of a monometer hole made there. In this way more reasonable explanation is given for the discontinuous points which appears on the characteristic curves for a disc valve with valve seated face, broader than that described in the 8th Report.

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