PRESSURE TRANSDUCER FOR FLOWMETER Russian patent published in 2000 - IPC

FIELD: large-diameter tubes used for transportation of fluid medium carrying inclusions and abrasive impurities. SUBSTANCE: proposed pressure transducer is manufactured in the form of tubular body that has section-diffuser, section of maximum diameter and section-contraction arranged in sequence one after another in direction of flow. Holes for pressure tapping in proper cross-sections of tubular body are surrounded by averaging collectors located outside tubular body. Internal surface of section-diffuser has grooves distributed over perimeter which bottoms form specified angle together with line of gradient of internal surface. Sections of grooves are positioned one after another in longitudinal direction. Specified geometry of grooves enables profile of velocity of flow to be changed. EFFECT: reduced noise and vibration in extended pipe-lines, prevention of wear-out and cavitation. 7 cl, 7 dwg