船尾管オイルシールの圧力下における変形について
書誌事項
- タイトル別名
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- Static Investigation of Sterntube Oil Seal Ring Deformation Under the Influence of Pressure
抄録
Out of the troubles on sterntube oil seal devices, the most critical problem is the cracks on the seal ring found in many seal devices. The phenomenon of these cracks can be divided into two categories, i. e. (1) numerous hair cracks on lip face, and (2) circumferential long cracks on bend parts of seal ring. Among the various conceivable causes of these cracks, it is considered that, particularly on large ships, one of the most important factor is the large deformation and stress concentration of the seal rings under the high pressure. At balast condition, the seal rings are subject to the large differential pressure created by the oil head tank and draught, and this pressure generally exceed 0.5 kg/cm2G in case of 50, 000 DWT and larger ships.<BR>This paper deals with the results of hydrostatic test conducted on the existing 670 type seal ring, in order to investigate the actual behavior of seal rings under the pressure.<BR>The results show that, the mode of deformation of bellow part, when they are kept free of restriction, is considerably different from when they are restricted for axial movement by support ring. And the bellow part is bended sharply at the fastening edge of casing and support rings. The seal lip is pressed down on to the liner and contacts in full width of lip face at the pressure of 1 kg/cm2G. When the back pressure is given, the seal ring leaks at the pressure of 1.1 mAq. High pressure test shows that, mechanical strength of a new seal ring of the existing type is sufficient and it can withstand comparably high pressure without burst.
収録刊行物
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- 日本舶用機関学会誌
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日本舶用機関学会誌 3 (1), 44-48, 1968
公益社団法人 日本マリンエンジニアリング学会
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詳細情報 詳細情報について
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- CRID
- 1390001205161248896
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- NII論文ID
- 130001337432
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- ISSN
- 18844758
- 03883051
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可