MULTI-STAGE CENTRIFUGAL PUMP DISCHARGE DEVICE Russian patent published in 2009 - IPC F04D29/41 

Abstract RU 2374501 C1

FIELD: engines and pumps.

SUBSTANCE: invention can be used in multi-stage centrifugal pumps. Proposed device comprises hydraulic balancing device 4 with ring, and discharge ring 6 arranged in housing 1. Discharge ring outer part and hydraulic balancing device inner part are build-up elements incorporating inserts made from non-metal material (for example, rubber) representing ring-inserts 10. Ring-inserts 10 are also attached to discharge ring outer part at the point it contacts the ledge of discharge ring 6.

EFFECT: ruling out mechanical contact between discharge device rings to reduce their wear.

1 dwg

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RU 2 374 501 C1

Authors

Bochenkov Dmitrij Aleksandrovich

Stashinov Jurij Pavlovich

Volkov Vladimir Vladimirovich

Volkov Dmitrij Vladimirovich

Lazarev Maksim Aleksandrovich

Dates

2009-11-27Published

2008-06-04Filed