METHOD OF OPERATION AND DESIGN OF MULTIPHASE SCREW PUMP Russian patent published in 1998 - IPC

Abstract RU 2101571 C1

FIELD: mechanical engineering; screw pumps. SUBSTANCE: multiphase screw pump with at least one feed screw enclosed in housing has at least one suction branch pipe at one side and at least one delivery branch pipe at top. Sucked medium is continuously delivered in low-pulsation flow in parallel with screw shaft and is let out through delivery branch pipe. To eliminate drawbacks appearing usually at dry operation phases, part of volumetric flow of liquid is taken from delivery side and returned to suction zone in metered amounts to maintain circulation. EFFECT: enlarged operating capabilities. 16 cl, 3 dwg

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RU 2 101 571 C1

Authors

Rol'Fing Gerkhard[De]

Dates

1998-01-10—Published

1994-04-28—Filed