PISTON FLOWMETER FOR MEASURING FLOWS OF OIL WELL PRODUCTS Russian patent published in 1995 - IPC

FIELD: oil producing industry. SUBSTANCE: piston flowmeter for measuring flows of oil well products has two-plunger distributor with transducer of plunger linear motion. Inner space of cylindrical body of flowmeter is separated by permeable partition into inlet and outlet cavities, each of which contains changeable bushing with plunger located in it. Plungers are rigidly connected to each other by means of rod passing through partition. Cylindrical surfaces of plungers form, together with bushing inner surface, the horizontal sealing planes. Fitted on body from end sides are coupled by studs flanges with flat annular recesses which form, together with plunges, the vertical sealing planes. Transducer of linear motion of plungers is located on the side of outlet cavity of distributor body. Formation on distributor of sealing planes arranged at angle of 90 deg. precludes backward flowing of fluid into well. EFFECT: higher accuracy of measurement of flow rate of nonseparated fluid due to provision in flowmeter of two-plunger distributor with transducer of plunger linear motion. 7 dwg