METHOD OF DETERMINATION OF VISCOSITY OF LIQUIDS IN PIPE-LINES Russian patent published in 1996 - IPC

FIELD: pipe-line transport. SUBSTANCE: method includes pumping through of liquids with pump of controlled capacity through thermostated constriction device located in pipe-line, measurement of flow of liquid, its temperature, temperature of heat transfer agent in heat exchanger and pressure differential in constriction device and computation of viscosity. Computation formula is entered with coefficients taking into account actual geometrical shape of constriction device, slip of liquid by walls of constriction device and removal of heat into heat exchanger which are determined with stepped change of pump productivity and/or of temperature of liquid if viscosity is known. EFFECT: enhanced authenticity of method. 1 dwg