Open AccessMODERNISED DESIGN OF A HYDROSTATIC DENSIMETER FOR MEASURING DENSITY OF HIGHLY VISCOUS OILS
Author(s) -
Damir I. Sagdeev,
Ilmutdin M. Abdulagatov,
N. K. Nikulin,
V. I. Tyulkin
Publication year - 2020
Publication title -
vestnik dagestanskogo gosudarstvennogo tehničeskogo universiteta. tehničeskie nauki
Language(s) - English
Resource type - Journals
eISSN - 2542-095X
pISSN - 2073-6185
DOI - 10.21822/2073-6185-2019-46-4-42-52
Subject(s) - hydrostatic equilibrium , viscosity , hydrostatic weighing , hydrostatic pressure , work (physics) , thermodynamics , materials science , atmospheric pressure , calibration , newtonian fluid , volume (thermodynamics) , mechanics , range (aeronautics) , meteorology , composite material , physics , medicine , quantum mechanics , body weight
Objectives . The aim of this work is to modernise a VT-KHTI densimeter operated by the method of hydrostatic weighing in order to study the density of highly viscous oils and oil products in the temperature range from 293 K to 473 K at atmospheric pressure. Method . Among the many methods for studying density, the following were used in the course of the study: the constant- and variable-volume piezometer method and the method of hydrostatic weighing. Results . The results of the densimetric study of highly viscous oils obtained from the Republic of Tatarstan in the temperature range from 293 K to 473 K at atmospheric pressure. The following grades are presented: Ashalchinskaya oil (super-viscous, SVO); Kuakbash oil (sulphur), Kichuy oil and Devon oil. Following an analysis and selection of methods for measuring density, a technique for error estimation and densimeter calibration is presented. A calculated expression for the hydrostatic weighing method, derived from the modernised hydrostatic densimeter design for measuring the density of highly viscous oils, is presented. Conclusion . The VT-KHTI densimeter for vacuum working fluids has been modernised and calibrated for research work on measuring the dynamic viscosity coefficient of both Newtonian and non-Newtonian liquids.