DETERMINATION OF THE METROLOGICAL CHARACTERISTICS OF PIPE PROVERS BASED ON THE CONCEPT OF UNCERTAINTY
DOI:
https://doi.org/10.31471/1993-9981-2021-2(47)-34-45Keywords:
pipe provers, standard measuring equipments, the uncertainty measurement, the amount of crude oil.Abstract
In this paper noted that oil metering units are used to determine the amount of crude oil. The metering units of crude oil that implement the method of dynamic measurements, the amount of oil is determined by the readings of oil meters (turbine or mass flow meters). Such flow rate transducers (flow meters) are subject to verification during operation. The main reference means used for the calibration of flow transducers are pipe provers (TPP). Calibration of such reference units can be performed using reference meters (compact-prover), reference balance and using a reference pipe prover with a comparator. The methods of calibration pipe provers with the use of reference meters (standard volume measure), as well as a reference compact-prover with a comparator have been developed. These methods of calibration approbation during the calibration of reference pipe prover installations operated at the facilities of JSC "Ukrtransnafta". The method is considered, and also the structural scheme of calibration of TPP by means of the reference compact prover with the comparator is resulted. A mathematical model is developed taking into account the influential factors and algorithms for their evaluation, as well as the metrological characteristics of TPP are determined - the uncertainty budget is formed and the uncertainty of measuring the capacity of the pipe prover calibration unit is estimated. According to the results of calibration of TPP BHP -1100 company "VEGYEPSZER", Hungary, operated in the Branch "PDMN" JSC "Ukrtransnafta" (Kremenchuk) using the reference Compact Prover company Brooks Insntrument Division Emerson Electric Co., USA comparator - turbine flow meter Smith Meter series MVTM, USA, the relative extended uncertainty of TPP capacity measurement was 0,03%. The main contributions to the extended measurement uncertainty during TPP calibration were the standard uncertainties due to the influence of liquid volume expansion (liquid temperature measurement) in TPP and compact-prover, the standard uncertainty of the reference compact-prover and the experimental standard uncertainty of pipe prover capacitance measurement result's mean value.
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References
Zakon Ukrayiny «Pro metrolohiyu ta metrolohichnu diyalʹnistʹ». Vidomosti Verkhovnoyi Rady (VVR), 2014, № 30, st.1008. (Law of Ukraine «On Metrology and Metrological Activity». Information of the Verkhovna Rada, 2014, № 30, р.1008)
Postanova Kabinetu Ministriv Ukrayiny vid 4 chervnya 2015 r. № 374 «Pro zatverdzhennya pereliku katehoriy zakonodavcho rehulʹovanykh zasobiv vymiryuvalʹnoyi tekhniky, shcho pidlyahayutʹ periodychniy povirtsi». (Resolution of the Cabinet of Ministers of Ukraine dated June 4, 2015 № 374 «About the statement of the list of categories of legally regulated means of measuring equipment which are subject to periodic verification».)
Nakaz Minekonomrozvytku vid 21.12.2015 № 1719 «Pro zatverdzhennya Norm chasu, neobkhidnoho dlya provedennya povirky zakonodavcho rehulʹovanykh zasobiv vymiryuvalʹnoyi tekhniky, shcho perebuvayutʹ v ekspluatatsiyi». (Order of the Ministry of Economic Development dated 21.12.2015 № 1719 «On approval of the norms of time required for verification of legally regulated measuring equipment in operation»)
Izmereniye kolichestva i kachestva nefti i nefteproduktov pri sbore, transportirovke i kommercheskom uchete / Khanov N.I., Fatkhutdinov A.SH., Slepyan M.A., Zolotukhin Ye.A., Fatkhutdinov T.A., Kolovertnov G.YU - SPb.: Izd-vo SPbUEF. 2000.- 268 s. (Measurement of the quantity and quality of oil and oil products in the collection, transportation and commercial account/ Khanov N.I., Fatkhutdinov A.S., Slepian M.A., Zolotukhin E.A., Fatkhutdinov T.A., Kolovertnov G.Y. - St. Petersburg: Publishing SPUEF. 2000.- 268 p).
Р 081/24.99-99 Rekomendatsiya. Metrologiya. Ustanovki truboporshnevyye. Tipovaya metodika poverki ustanovkami na baze vesov OGV ili mernikov. – Vved. 01.01.2000. –Kiyev, 1999.- 47 с. (R 081/24.99-99. Recommendation. Metrology. Pipe provers. Typical verification method with installations based on scales OGV or proving tank volume. – Introduced. 01.01.2000. – Kiev, 1999.- 47 p.).
МІ 2974-2006. Rekomendatsiya. GSI. Ustanovki poverochnyye truboporshnevyye 2-go razryada. Metodika poverki truboporshnevoy poverochnoy ustanovkoy 1-go razryada s komparatorom. – Vved. 01.05.2006. – Ufa, 2006.- 52 с. (МI 2974-2006 Recommendation. Metrology. Pipe provers. Verification method pipe provers using compact prover with master meter. – Introduced. 01.05.2006. – Ufa, 2006.- 52 p.)
Petryshyn I.S., Kepeshchuk T.V. Otsinyuvannya nevyznachenosti vymiryuvannya etalonnykh truboporshnevykh ustanovok pid chas obliku nafty // Metrolohiya ta prylady. -2020.-№6.-S. 9-14. (Petryshyn I.S., Kepeshchuk T.V Evaluation of the Uncertainty of Measurement Pipe Prover in Account of Crude Oil. Metrology and instruments) -2020.-№6.-P. 9-14).
Maletskaya O.Ye. Metodiki kalibrovki: opyt razrabotki i problemy // Metrolohiya. -2012. – S.41-46. (Maletskaya O.E. Methods Calibration: development experience and problems//Metrology. -2012. – P.41-46).
Paul Martin, IMASS. Realistic Pipe Prover Volume Uncertainty//27th International North Sea Flow Measurement Workshop 20 – 23 October 2009, Tønsberg, Norway.
EA-4/02 М:2013 Evaluation of the Uncertainty of Measurement in Calibration. - Date of Implementation. 18.10.2013. – EA Laboratory Committee, 2013- 75 p.
Zakharov I.P. Otsenivaniye neopredelennosti izmereniy pri provedenii kalibrovok // Metrolohiya ta prylady. -2007.-№1.- S. 31-42 (Zakharov I.P. Evaluation of the uncertainty of measurement in calibration// Metrology and instruments. -2007.-№1.- P. 31-42).
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