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Експериментальні дослідження перехідних процесів у нафтопроводі, спричинених запусками насосних агрегатів

Authors: Serediuk, Maria; Grygorskyi, Stanislav;

Експериментальні дослідження перехідних процесів у нафтопроводі, спричинених запусками насосних агрегатів

Abstract

The patterns of pressure changes during transients caused by running the pumping unit were determined with the help of processed industrial data after experiments carried out on the main oil pipeline “Druzhba”.It was found out, that the actual value of abruptly changing pressure both on the inlet and outlet of the oil pumping station is 15–23 % less than the theoretically expected value, in particular, half the pressure which is created by the pump started.The actual pressure overload of the linear part of the oil pipeline, caused by running the pumping unit, was analyzed. The exponential dependencies of an abrupt oil pressure change on the distance to the origin of the disturbance were developed. The intensity of damping of high and low pressure waves of the transported oil in the pipeline was assessed.For the oil pipeline, on which the experiments were carried out, the analytical relation was proposed to calculate a coefficient of pressure wave damping as a function of oil flow rate and the Reynolds number in the oil pipeline before the beginning of the transient caused by running the pumping unit. It was determined that the damping coefficients of increased and decreased pressure waves are almost the same for a specific transitional mode of operation of the pipeline.

По результатам промышленных экспериментов установлены закономерности изменения давления при переходных процессах, вызванных запуском насосных агрегатов. Выявлена фактическая величина скачкообразного изменения давления на входе и выходе нефтеперекачивающей станции (НПС). Для опытного нефтепровода предложены аналитические зависимости для расчета коэффициента затухания волны давления как функции расхода нефти и числа Рейнольдса

За результатами промислових експериментів встановлено закономірності зміни тиску за перехідних процесів, викликаних запуском насосних агрегатів. Виявлено фактичну величину стрибкоподібної зміни тиску на вході і виході нафтоперекачувальної станції (НПС). Для дослідного нафтопроводу запропоновано аналітичні залежності для розрахунку коефіцієнта затухання хвилі тиску як функції витрати нафти та числа Рейнольдса

Keywords

неусталений гідродинамічний процес; стрибкоподібна зміна тиску; коефіцієнт затухання хвилі тиску, UDC 622.692.4, unstable hydrodynamic process; an abrupt pressure change; pressure wave damping factor, неустановившийся гидродинамический процесс; скачкообразное изменение давления; коэффициент затухания волны давления

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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