FIELD: oil producing industry.
SUBSTANCE: invention relates to pumping systems for handling extremely flowable media and design of separate parts of such systems and their coupling. It can be used in plants for testing of oil and gas properties under original reservoir conditions. According to invention, new combination of design members provides two chambers in one cylinder of pump. End faces of plunger are not exposed to action of excess pressure in system making it possible to reduced power output of drive and unload electric motor. High pressure vessel in form of vessel with plug with two holes provided with t-pipes connected to output of multiposition pneumatic valves whose inputs are connected with holes of pump cylinder chambers creates circulating pumping system whose operation is provided owing to use of pulse control unit in motor to eliminate cyclic delivery of fluid medium.
EFFECT: improved reliability of pumping system.
3 dwg
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