SEALING OF PROPELLER SHAFT Russian patent published in 2009 - IPC B63H23/34 F16J15/34 

FIELD: transportation.

SUBSTANCE: shaft sealing comprises the main seal, power elastic element with clamping split ring and sealing rotary antifriction ring, which interacts with non-rotary sealing antifriction ring, and emergency seal with support ring. Body of non-rotary antifriction ring is arranged in the form of elastic insert with petal spring poured inside, which is a response pair to power elastic element. Support ring of emergency seal is arranged with skew inverted to the side of end seal. Additionally seal is equipped with pumping pipeline with tap that connects sealing cavity with cavity of stern tube.

EFFECT: higher reliability of shaft seal.

2 cl, 5 dwg