CB* 3346-1988
Variable pressure mechanical seal of marine pump shaft (English Version)

Standard No.

CB* 3346-1988

Language

Chinese, Available in English version

Release Date

1988

Published By

Professional Standard-Ships

Scope

This standard specifies the product classification, technical requirements, testing and methods, inspection rules, packaging and guarantee of variable pressure mechanical seals for marine pump shafts. This standard is applicable to the rotating shaft of the vertical outboard suction pump of submarines and deep submersibles with a fluid pressure change range of 0.01~3.3MPa, a fluid temperature of -20~80°C, an operating speed not greater than 3600 r/min, and a nominal diameter of 25~72mm. Variable pressure mechanical seal. It is also suitable for shaft seals of rotating machinery that transport liquids with large fluctuations in pressure (pump shaft seals in series-parallel conversion systems and shaft seals of series-parallel pumps) and seals of the side propulsion shafts and rudder shafts of submarines and submersibles.