Філіпович, Ю. Ю. та Сунічук, С. В. та Filipovych, Y. Y. та Sunichuk, S. V. (2021) ЕНЕРГО-ЕКОНОМІЧНІ ПОКАЗНИКИ РОБОТИ ВАКУУМНИХ СИСТЕМ АВТОМАТИЗОВАНИХ НАСОСНИХ СТАНЦІЙ. Вісник Національного університету водного господарства та природокористування (3(95)). с. 17-28.

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Анотація

Виконано аналіз експериментальних досліджень та чисельних розрахунків робочих циклів вакуумних систем, який свідчить про те, що двом однаковим вакуумним насосам при однакових значеннях параметра живильних труб різних діаметрів ST відповідатиме один і той же графік робочого циклу. Це дозволило, користуючись теорією подібності, при всіх інших однакових умовах, поширити результати одного досліду на живильні труби інших розмірів

Title in English

ENERGY AND ECONOMIC INDICATORS OF VACUUM SYSTEMS OF AUTOMATED PUMPING STATIONS

English abstract

As a result of the analysis of experimental studies and calculations of the operating cycles of vacuum systems, it is proved that two identical vacuum pumps with the same values of the parameter of feeding tubes of different diameters Sm are subject to the same work cycle schedule. This allows, using the theory of similarity, under all other identical conditions, to extend the results of one experiment to the feeding tubes of other arrangements. The object of research is the working cycles of vacuum installations, and the subject of research is the design of vacuum installations, the duration of the working cycle of vacuum systems and the influence of the parameters of the vacuum installation on the nature of its operation. The method of experimental research was used in the study of technological processes of vacuum installations, and the methods of mathematical statistics, physical and mathematical modeling were used in the processing of the obtained materials. The aim of the research is to improve the existing and develop new analytical and numerical methods for calculating the technological processes of vacuum systems of automated pumping stations and to develop new devices for the filling of centrifugal pumps. A method of research to remove the performance of the vacuum pump and ejector and the parameters of the operating cycle of the vacuum system and research methods to determine the impact of the vacuum pump bay on its performance, as well as to determine the flow of air sucked into the vacuum system. The issue of using the principles of similarity to recalculate the characteristics of the operating cycle of the vacuum unit in compliance with the conditions of similarity of fullscale and model parameters of the system. A special study of the working processes of vacuum units with horizontal vacuum boilers was conducted. Studies show that both options for the layout of vacuum systems from an energy point of view are exactly the same, and the advantage of one option is determined only by the conditions of the vacuum system in the pumping station and is determined by the requirements of the main and auxiliary equipment. To save energy during the operation of the vacuum unit, the length of the feed pipe, the roughness factor and the local resistance factor should be reduced as much as possible.

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