CAPILLARY VISCOSIMETER Russian patent published in 1998 - IPC

FIELD: measurement of viscosities. SUBSTANCE: capillary viscosimeter has two hydraulic cylinders 1 and 2 interconnected by capillary device 3. Hydraulic cylinders are provided with pistons 4 and 5 arranged in bodies 6 and 7, respectively. Each of hydraulic cylinders 1 and 2 has pressure sensors 8 and 9 and displacement pickups 10 and 11. Bodies 6 and 7 are secured on common base 12. Drive of piston 4 provided for translational-rotary motion of the latter through pair "screw 15 - nut 16", respectively. Screw 13 is coupled to piston 4 and motor 17, and screw 15, to piston 5 and motor 18. Bodies 6 and 7 are spring-loaded by flexible members 19 and 10 positioned between end-face of body 6 and nut 17 and between end-face of body 7 and nut 16, respectively. Pressure sensors 8 and 9 are made for each of hydraulic cylinders 1 and 2 in the form of indicator registering reciprocal shift of nut 14 and body 6 and of nut 16 and body 7, respectively. Displacement pickups 10 and 11 are made as an indicator registering reciprocal shift of piston 4 and body 6, as well as of piston 5 and body 7, respectively. EFFECT: enhanced accuracy of measurements. 3 cl, 9 dwg