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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vdgtu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Дагестанского государственного технического университета. Технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of Dagestan State Technical University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-6185</issn><issn pub-type="epub">2542-095X</issn><publisher><publisher-name>Daghestan State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21822/2073-6185-2019-46-4-42-52</article-id><article-id custom-type="elpub" pub-id-type="custom">vdgtu-712</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭНЕРГЕТИЧЕСКОЕ, МЕТАЛЛУРГИЧЕСКОЕ И ХИМИЧЕСКОЕ МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER, METALLURGICAL AND CHEMICAL MECHANICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>МОДЕРНИЗИРОВАННАЯ КОНСТРУКЦИЯ ГИДРОСТАТИЧЕСКОГО ПЛОТНОМЕРА ДЛЯ ИЗМЕРЕНИЯ ПЛОТНОСТИ ВЫСОКОВЯЗКИХ НЕФТЕЙ</article-title><trans-title-group xml:lang="en"><trans-title>MODERNISED DESIGN OF A HYDROSTATIC DENSIMETER FOR MEASURING DENSITY OF HIGHLY VISCOUS OILS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сагдеев</surname><given-names>Д. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Sagdeev</surname><given-names>D. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, доцент кафедры «Вакуумная техника электрофизических установок»,</p><p>1420015, г. Казань, ул. Карла Маркса, д. 68</p></bio><bio xml:lang="en"><p>Cand. Sci. (Technical), Ass. Prof., of the Department «Vacuum Technology of Electrophysical Installations»,</p><p>68 Karl Marx St., Kazan 1420015</p></bio><email xlink:type="simple">sagdeev@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абдулагатов</surname><given-names>И. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Abdulagatov</surname><given-names>I. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор технических наук, профессор кафедры «Физической химии»,</p><p>367000, г. Махачкала, ул. Гаджиева, д. 43-а</p></bio><bio xml:lang="en"><p>Dr. Sci. (Technical), Prof., Department of Physical Chemistry,</p><p>43-a Gadzhieva St., Makhachkala 367000</p></bio><email xlink:type="simple">ilmutdina@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никулин</surname><given-names>Н. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikulin</surname><given-names>N. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, доцент кафедры «Вакуумная и компрессорная техника»,</p><p>105005, г. Москва, 2-я Бауманская ул., д. 5, стр. 1</p></bio><bio xml:lang="en"><p>Cand. Sci. (Technical), Ass. Prof., of the Department «Vacuum and compressor technology »,</p><p>5 Baumanskaya St., Moscow 105005</p></bio><email xlink:type="simple">nikulinnk@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюлькин</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyulkin</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>студент кафедры «Вакуумная и компрессорная техника физических установок»,</p><p>105005, г. Москва, 2-я Бауманская ул., д. 5, стр. 1</p></bio><bio xml:lang="en"><p>Student of the Department «Vacuum and compressor technology of physical installations»,</p><p>5 Baumanskaya St., Moscow 105005</p></bio><email xlink:type="simple">tyulkin.vladislav@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский национальный исследовательский технологический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan National Research Technological University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Дагестанский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Daghestan State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Московский государственный технический университет им. Н.Э. Баумана</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bauman Moscow State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>31</day><month>12</month><year>2019</year></pub-date><volume>46</volume><issue>4</issue><fpage>42</fpage><lpage>52</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сагдеев Д.И., Абдулагатов И.М., Никулин Н.К., Тюлькин В.И., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Сагдеев Д.И., Абдулагатов И.М., Никулин Н.К., Тюлькин В.И.</copyright-holder><copyright-holder xml:lang="en">Sagdeev D.I., Abdulagatov I.M., Nikulin N.K., Tyulkin v.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestnik.dgtu.ru/jour/article/view/712">https://vestnik.dgtu.ru/jour/article/view/712</self-uri><abstract><sec><title>Цель</title><p>Цель. Целью данной работы является модернизация плотномера ВТ-КХТИ, работающего по методу гидростатического взвешивания, для исследования плотности высоковязких нефтей и нефтепродуктов в интервале изменения температур от 293 К до 473 К при атмосферном давлении.</p></sec><sec><title>Метод</title><p>Метод. Из многочисленных методов исследования плотности в ходе исследования применены: пьезометры постоянного и переменного объемов, метод гидростатического взвешивания.</p></sec><sec><title>Результат</title><p>Результат. Представлены результаты исследования плотности высоковязких нефтей Республики Татарстан в интервале изменения температур от 293 К до 473 К при атмосферном давлении следующих марок: Ашальчинская нефть (сверхвязкая, СВН); Куакбашская нефть (сернистая), Кичуйская нефть и Девонская нефть. Произведен анализ и выбор методик измерения плотности. Приведена методика оценки погрешности и калибровки плотномера. Рассмотрена модернизированная конструкция гидростатического плотномера для измерения плотности высоковязких нефтей. Выполнен вывод расчетного выражения для метода гидростатического взвешивания.</p></sec><sec><title>Вывод</title><p>Вывод. Плотномер ВТ-КХТИ для вакуумных рабочих жидкостей модернизирован и откалиброван для научно-исследовательских работ по измерению коэффициента динамической вязкости реовискозиметром ВТ-КХТИ, как ньютоновских, так и неньютоновских жидкостей. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Objectives</title><p>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.</p></sec><sec><title>Method</title><p>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.</p></sec><sec><title>Results</title><p>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.</p></sec><sec><title>Conclusion</title><p>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. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>плотность</kwd><kwd>нефть</kwd><kwd>гидростатический плотномер</kwd><kwd>методы измерения плотности</kwd><kwd>метод гидростатического взвешивания</kwd></kwd-group><kwd-group xml:lang="en"><kwd>density</kwd><kwd>oil</kwd><kwd>hydrostatic densimeter</kwd><kwd>density measurement methods</kwd><kwd>hydrostatic weighing method</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда (проект №18‒19‒00478).</funding-statement><funding-statement xml:lang="en">The study was carried out with a grant from the Russian Science Foundation (Project No. 18‒19‒00478).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Сагдеев Д.И., Фомина М.Г., Мухамедзянов Г.Х. 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