PROBLEM TO BE SOLVED: To provide a stern tube seal system which enables reduction of leakage of a lubrication oil to the outside of a ship.SOLUTION: A stern tube seal system 100 prevents a lubrication oil in a stern tube 10 covering a propeller shaft 2 from flowing out and includes: a cylindrical housing 102 into which the propeller shaft is inserted; a first seal ring 105a which is held by the housing and slidably contacts with outer peripheral surfaces of liners 4, 6 which fits on the propeller shaft; a second seal ring 105b which is held by the housing at a position located closer to a bow side than the first seal ring and slidably contacts with the outer peripheral surfaces of the liners to form a first air chamber with the first seal ring; an air supply part 120 which supplies air to the first air chamber at an air pressure higher than a sea water pressure at a stern side of the first seal ring; and a lubrication oil circulation part 130 which circulates the lubrication oil in the stern tube at an oil pressure less than the sea water pressure.SELECTED DRAWING: Figure 1
【課題】船外への潤滑油の漏洩を低減可能な船尾管シールシステムを提供する。【解決手段】プロペラ軸2を覆う船尾管10内の潤滑油の流出を防止する船尾管シールシステム100であって、前記プロペラ軸が挿通される筒状のハウジング102と、前記ハウジングに保持され、前記プロペラ軸に外嵌するライナー4、6の外周面に摺接する第1シールリング105aと、前記第1シールリングよりも船首側で前記ハウジングに保持され、前記ライナーの外周面に摺接して前記第1シールリングとの間に第1空気室を形成する第2シールリング105bと、前記第1シールリングの船尾側の海水圧以上の空気圧で前記第1空気室に空気を供給する空気供給部120と、前記海水圧未満の油圧で前記船尾管内に前記潤滑油を循環させる潤滑油循環部130と、を有する。【選択図】図1
STERN TUBE SEAL SYSTEM, STERN TUBE SEAL DEVICE, SHIP, AND STERN TUBE SEAL METHOD
船尾管シールシステム、船尾管シール装置、船舶、及び船尾管シール方法
2017-07-20
Patent
Elektronische Ressource
Japanisch
SEAL RING FOR STERN TUBE, AND STERN TUBE SEALING STRUCTURE
Europäisches Patentamt | 2017
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