船用鋳鉄仕切弁の合理的強度設計法の研究 : 第1報 : 弁殻の変形と弁座の漏洩に関する加圧実験結果

概要

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This paper describes some results of the pressure tests performed on a cast iron marine gate valve, JISF 7363. The strength and the leakage of the shell body under pressure are discussed. Test was carried out by applying oil pressure inside the assembled valve with the end flanges covered, and the obturator was operated by turning the handwheel. The maximum test pressure was about 2.5 times permissible working pressure, and hand- wheel torque was 6〜14 kgf・m. Strains of the inside and outside surfaces of the body wall, and the deflections of the bonnet flange on the axis of body neck were measured and at the same time leakage of inside pressure oil was checked. The stress distributions of the shell, the bonnet flange deformations, and the effects of the handwheel operations affecting on them were investigated. Moreover, the calculation formulas of the bonnet flange and valve seats behaviours are examined.
独立行政法人海上技術安全研究所の論文
1988-07-30