HORIZONTAL ELECTRICALLY DRIVEN PUMP UNIT Russian patent published in 2014 - IPC F04D13/06 F04D7/04 

Abstract RU 2503852 C1

FIELD: engines and pumps.

SUBSTANCE: proposed unit comprises drive motor, rotary pump and coupling to engage their shafts. Pump housing consists of running and flow sections. Flow section comprises suction pipe, flow chamber to accommodate impeller and involute branch pipe communicated with pressure pipe. Pump shaft incorporates running section supported by the case via bearings and furnished with gland seal. Discs of said closed impeller are equipped with impellers and multistart system of swirled vanes. Said vanes are separated by diffuser intervane channels. Active volume of intervane channel filling allows forcing out in one impeller revolution of (30-600)×10-5 m3/rev of transferred medium. Flow section rear wall is composed of armor disc while its sidewall makes involute branch pipe in the form of monofilar helix diffuser channel. Pressure diffuser branch pipe features outlet cross-section area some 1.2-5.6 times larger that at inlet.

EFFECT: higher efficiency and reliability, longer life.

10 cl, 7 dwg

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RU 2 503 852 C1

Authors

Valjukhov Sergej Georgievich

Kasimtsev Vladimir Vladimirovich

Pechkurov Sergej Vladimirovich

Feropontov Maksim Petrovich

Selivanov Nikolaj Pavlovich

Dates

2014-01-10Published

2012-09-27Filed