タイトル無し

概要

論文の詳細を見る
On the stern tube sealing, the abnormal phenomenon that lube oil supplied in the chamber between seal rings leaks outboard actually occurs nowadays, even though its seal rings have no damage.<BR>Thereupon, the authors feel keenly that in recent years with the tendency of the larger size and the higher speeds of ships, this phenomenon is an important item to be investigated and have investigated for grasping the working conditions of seals and its surroundings on large oil tanker. As the results of it, the authors found that a large pressure fluctuation is caused in the chamber between seal rings and that this pressure fluctuation is very related to the claracteristics of stern tube sealing. Then, the authors have carried out experiments in our laboratory with a seal testing apparatus under conditions of pressure, vibration, etc. similar to those of an actual ship. And the authors have grasped it from the results that the causes of the pressure fluctuation are the inertia force of oil flow in the circumferential direction in the chamber between the seal rings excited by the lateral vibration of the shaft, that of oil flow in the axial direction in the recess of the stern tube beairng excited by the axial vibration of the shaft, etc.<BR>Furthermore, the authors have analyzed theoretically the mechanism of occurrence of the pressure fluctuation and have grasped the characteristics of lip type stern tube sealings in the relationship between shaft vibration, pressure fluctuation and oil leakage and about the necessary pressure for sealing in the chambers enclosed seal rings.
公益社団法人日本マリンエンジニアリング学会の論文

タイトル無し

スポンサーリンク

概要

著者

関連論文

スポンサーリンク