Analysis of the rheological properties influence on fluid at flow meters’ metrological characteristics

UDK: 622.692.4:681.12

DOI: 10.24887/0028-2448-2020-7-128-132

Key words: mass flow meter, turbine flow meter, ultrasonic flow meter, flow meter, petroleum product, oil

Authors: A.S. Savanin (The Pipeline Transport Institute LLC, RF, Moscow)

When measuring the mass of oil and oil products during their transportation through the system of main pipelines, a significant contribution to the measurement error is made by flow converters (flow meters) and density, which are part of the measurement systems for the quantity and quality of oil and oil products (SIC). Also, when calculating the mass of oil and petroleum products, the results of viscosity, pressure and temperature measurements are used. Currently, turbine flow meters, mass flow meters, ultrasonic flow meters, chamber flow meters, density converters, and viscosity converters are used to measure the quantity, density, and viscosity of oil and petroleum products in Russia and abroad. The article is devoted to the study of the influence of rheological properties of the working medium on the metrological characteristics of flow meters of various designs. For studies the authors selected turbine flow meter (made in Russia), ultrasonic flowmeter (production of of the Netherlands), a mass flow meter (made in UK). The research was carried out in two stages – on a specialized test bench (with working media diesel fuel, industrial oil ILS-5, spindle oil) and on the SIC (with working medium oil). Such research, which includes testing of flow meters in a wide range of viscosities and costs in real working environments, was conducted in Russia for the first time. The article discusses the first stage of testing. The general principles and laws that affect the flow meter readings, stability and reliability of their operation are considered, and the description of the applied research methods and processing of statistical data obtained during tests is given. The second part of the article describes the process of testing flowmeters, analyzes the test results, describes the comparison of calibration characteristics of flowmeters, analyzes the impact of operating conditions on metrological characteristics, and compares the values of the standard deviation (RMS). References 1. Kazantsev M.N., Timofeev F.V., Zamalaev S.N., Gil'manov M.R., Methods of detection, elemination and formation prevention of asphalt, resin and paraffin deposits in main oil pipelines (In Russ.), Nauka i tehnologii truboprovodnogo transporta nefti i nefteproduktov = Science & Technologies: Oil and Oil Products Pipeline Transportation, 2016, no. 3, pp. 50–56. 2. Korolenok A.M., Lur'e M.V., Timofeev F.V., Extending range of light oil products butched through pipelines pipelines (In Russ.), Nauka i tehnologii truboprovodnogo transporta nefti i nefteproduktov = Science & Technologies: Oil and Oil Products Pipeline Transportation, 2012, no. 4 (8), pp. 40–43. 3. Panfilov S.A., Savanin A.S., Analysis of the influence of the reliability and stability of metrological characteristics of measuring instruments on the intertesting interval (In Russ.), Polzunovskiy vestnik, 2013, no. 2, pp. 277–280. 4. Kolbanev N.I., Timofeev F.V., Sereda S.V., Sovershenstvovanie sistemy ispytaniy nefteproduktov (Improving the petroleum product testing system), Proceedings of XV National Scientific and Practical Conference “Metrologiya 2019” (Metrology 2019), Sofiya, Bolgariya, 2019, pp. 42–44. 5. Galyamov A.K., Shammazov A.M., Tagirov R.Sh. et al., Investigation of the effect of gas on the accuracy of turbine flow meters (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 1983, no. 4, pp. 47–49. 6. Ibragimov N.G., Samoylov V.V., Frolov A.I. et al., Analysis and selection of flow measuring instruments in RPM systems and gas collection networks (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2002, no. 3, pp. 74–78. 7. Obshchaya teoriya statistiki (General theory of statistics): edited by Shmoylova R.A., Moscow: Finansy i Statistika Publ., 2002, 560 p. 8. Aralov O.V., Buyanov I.V., Savanin A.S., Shimel' N.A., Mathematical modeling of a helical flowmeter for oil and oil products (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2018, no. 6, pp. 140–144. 9. Saboohi Z., Sorkhkhah S., Shakeri H., Developing a model for prediction of helical turbine flowmeter performance using CFD, Flow Measurement and Instrumentation, 2015, V. 42, рр. 47–57, DOI: 10.1016/j.flowmeasinst.2014.12.009 10. Lisin Yu.V. Aralov O.V., Savanin A.S., Reduction of the limits of permissible relative error of the indirect method of dynamic measurements of the mass of oil and oil products (In Russ.), Zakonodatel'naya i prikladnaya metrologiya, 2016, no. 2 (141), pp. 17–20.