MULTI-STAGE END SEAL FOR REVOLVING SHAFT Russian patent published in 1998 - IPC

Abstract RU 2116536 C1

FIELD: sealing technology; sealing shafts of pumps handling highly inflammable, combustible and toxic liquids. SUBSTANCE: end seal is made in form of multi-stage seal including main and auxiliary stages. Auxiliary stage is made in form of hydraulic seal consisting of two seals with cavity between them connected with sealing liquid source. Located between main and auxiliary stages of seal is drain hermetic chamber having branches for escape of liquid fraction to hermetic reservoir and gaseous fraction either to hermetic reservoir or for burning. Branches are fitted with shut-off control fittings. EFFECT: enhanced reliability of sealing. 3 dwg

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RU 2 116 536 C1

Authors

Tokarev E.P.

Dates

1998-07-27—Published

1996-07-09—Filed