PUMP ROTOR AXIAL LOAD RELIEF DEVICE Russian patent published in 1998 - IPC

FIELD: liquid rocket engines; turbocompressor sets. SUBSTANCE: device has housing, shaft with impeller axially displacing in housing and forming load relief space together with housing. projections on impeller and housing form radial slot sealing located at load relief space inlet, and axial slot sealing at load relief space outlet. Bypass channel in pump housing connects pump outlet with load relief space. Bypass channel has cylindrical chamber with tangential inlet and axial outlet. EFFECT: enhanced reliability and economy of pumping unit owing to reduction of losses. 3 dwg