FIELD: mechanical engineering; oil producing industry; liquid transfer pumps for use in marginal wells. SUBSTANCE: multiple stage centrifugal pump has housing, shaft with fitted on centrifugal impellers with radial guide vane assembly installed behind each impeller. Plates forming channels are installed in passage area of guide vane assemblies. Angles of channel wall tilling relative to corresponding circumferences increase from inlet to outlet. Area occupied by plates on inlet radius of guide vane assembly is at least several times as great as area of channels in between. EFFECT: enlarged operating capabilities. 2 dwg
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