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مهندسی کشتی - سیستمهای مدرن (همیشه سوال برا مهندس دومی بوده) stern tube sealing arrengment

airspace sealing system

            

                 This anti-pollution seal uses four self-supporting lip rings and incorporates an air chamber with controlled venting an no loss of air into the seawater. The system also has the ability to be switched over to a standard seal with a pressure control system in times of                       emergency.As with other Simplex seals the lip rings can be replaced    without uncoupling the tail shaft or removing the propeller



This airspace seal installation diagram shows the latest standard with a pipe connection between seal and oil tank at the bottom of the seal and an additional oil chamber vent pipe connected on top of the seal. This revised design offers the opportunity to fill the oil chamber via the oil tank and vent the chamber at the same time.




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