CONDENSATE PUMP ASSEMBLY OF POWER UNIT FEED SYSTEMS Russian patent published in 2013 - IPC F04D9/04 F04D29/18 F04D29/52 F04D3/02 F04D29/64 

FIELD: engines and pumps.

SUBSTANCE: proposed assembly comprises pumps of condensate first and second lift integrated in common rigid outer housing. Said outer housing with all units arranged there inside are centrally symmetric about fixed vertical axis. Elliptic outer housing is furnished with sealed cover. Suction chamber side walls has condensate intake openings at the level of condenser bottom. Booster presser chamber accommodates even number of identical vertical low- and high-rpm axial polyrow pumps of first lift with one-side condensate inflow and identical horizontal low- and high-rpm axial polyrow pumps of second lift with double-side condensate inflow and discharge into pressure pipes of symmetric chamber of booster chambers. Impeller and distributors of all pumps are multiplanar components with the number of impeller vane cascades making 2-5 and 1-3. Said first cascades are shaped to truncated augers. Impellers and distributors with their casings are composed of cartridges tightly fitted in assembly outer housing.

EFFECT: better anti-cavitation properties, higher reliability, longer life.

5 dwg