FIELD: engines and pumps.
SUBSTANCE: rotary cradle-mounted semi-submersible pump has housing of running and flow sections. Running part case is equipped with bearing housings and elongation insert case. Running part housings cover at least the rotor shaft major length to make the pump running post. Flow section case comprises outlet case, rear wall, axial suction pipe and tangential pressure pipe and flow section accommodating the impeller. Scroll outlet covers the impeller. Pressure pipe is composed of diffuser to decrease flow rate at its outlet. Pump shaft runs in two bearings to make rotor part of the pump running post and is equipped with top and bottom brackets extending outside said bearings. Bottom support length is larger than that of top support. Impeller is equipped with vanes rigidly secured to the disc and curved in at least projection to conditional plane perpendicular to shaft axis.
EFFECT: longer life, higher reliability and efficiency.
23 cl, 5 dwg
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Authors
Dates
2014-03-20—Published
2013-01-15—Filed