Факультет технічних систем і енергоефективних технологій (ТеСЕТ)
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Item Numerical study of the centrifugal contra rotating blade system(IOP Publishing Ltd, 2021) Куліков, Олександр Андрійович; Kulikov, Oleksandr Andriiovych; Ратушний, Олександр Валерійович; Ratushnyi, Oleksandr Valeriiovych; Ковальов, Ігор Олександрович; Kovalov, Ihor Oleksandrovych; Мандрика, Анатолій Семенович; Mandryka, Anatolii Semenovych; Ігнатьєв, Олександр Савич; Ihnatiev, Oleksandr SavychThe manuscript presents the results of a numerical study of a centrifugal contra rotating blade system based on a low-speed impeller (ns = 65). They were carried out to assess the possibility of using a contra rotating blade mesh operating in conjunction with a standard centrifugal impeller as a method of intensifying the transmission of energy to a fluid. The designs of the systems under consideration and their pressure and energy characteristics are presented.Item Modernization of centrifugal impeller blades(IOP Publishing Ltd, 2021) Ратушний, Олександр Валерійович; Ratushnyi, Oleksandr Valeriiovych; Сохань, Андрій Олександрович; Sokhan, Andrii Oleksandrovych; Ковальов, Ігор Олександрович; Kovalov, Ihor Oleksandrovych; Мандрика, Анатолій Семенович; Mandryka, Anatolii Semenovych; Ігнатьєв, Олександр Савич; Ihnatiev, Oleksandr SavychThe increase of the energy intensity of the pumping equipment reflects general tendency of technology development: to transmit more energy without significant increase of mass and size parameters of their working bodies. It is represented in the “Directive on Determining the Requirements for the Design of Products Consuming Electricity” that forwards a claim for a 40% reduction of energy consumption in Europe by 2020. Considering the task as for the increase of energy intensity of the pump stage, the possibility of creating a higher head and efficiency increase with the same overall dimensions, flow rates and speed of rotation has been considered as a way of solving the task. This can be achieved by replacing the spatial blade system of a centrifugal impeller of low (ns = 65) specific speed by cylindrical blades, since such working bodies perform the process of energy transfer from impeller to working liquid in the most intensive way. It will provide for the head rise of impeller and for the simplification of its manufacturing technology.Item Creation a universal technique of predicting performance curves for small-sized centrifugal stages of well oil pump units(IOP Publishing Ltd, 2021) Антоненко, Сергій Сергійович; Antonenko, Serhii Serhiiovych; Сапожніков, Сергій Вячеславович; Sapozhnikov, Serhii Viacheslavovych; Кондусь, Владислав Юрійович; Kondus, Vladyslav Yuriiovych; Черноброва, Анна Костянтинівна; Chernobrova, Anna Kostiantynivna; Мандрика, Анатолій Семенович; Mandryka, Anatolii SemenovychThe work provided is a continuation the development of research work on the process of pumping high-viscosity liquids and is aimed at creating a universal technique of recalculating the performance curves of dynamic small-sized pumps from water to highviscosity liquid. The practical need to develop such a technique became relevant after obtaining different results when using existing methods of predicting performance curves for hydrodynamic oil well pumps. The expediency of carrying out studies aimed at clarifying the scope of the technique for calculating the work parameters of a well oil centrifugal pump, which is being developed, is substantiated, and more thorough analysis of the structure of conversion coefficients taking into account the scale factor and flow regime in the hydraulic flow parts of the studied pumps.Item Effect of gas content in the pumped liquid on the characteristics of a torque flow pump(IOP Publishing Ltd, 2021) Сапожніков, Сергій Вячеславович; Sapozhnikov, Serhii Viacheslavovych; Антоненко, Сергій Сергійович; Antonenko, Serhii Serhiiovych; Мілтих, Вікторія Станіславівна; Miltykh, Viktoriia Stanislavivna; Москаленко, В`ячеслав Васильович; Moskalenko, Viacheslav Vasylovych; Мандрика, Анатолій Семенович; Mandryka, Anatolii SemenovychThe article considers one of the ways to increase the ability of a dynamic pump to pump gas-liquid mixtures - the application of the vortex principle of energy transfer. This scheme is embodied in a torque flow pump, which is able to pump mixtures with a gas content of up to 0,40 - 0,45 without additional devices for preparing the mixture. Experimental researches the influence the value of the volumetric gas content on the performance characteristics of the torque flow pump of the "Turo" type are given. The analysis of influence of structure of a stream of gas-liquid mixture on the value of the critical gas content in the interblade channels of the impeller is represented and developed a physical model of decrease the parameters of the torque flow pump.Item Predictive vision of development paths of pump technical systems(IOP Publishing Ltd., 2021) Ковальов, Ігор Олександрович; Kovalov, Ihor Oleksandrovych; Ратушний, Олександр Валерійович; Ratushnyi, Oleksandr Valeriiovych; Джафаров, Тимур Васіфович; Dzhafarov, Tymur Vasifovych; Мандрика, Анатолій Семенович; Mandryka, Anatolii Semenovych; Ігнатьєв, Олександр Савич; Ihnatiev, Oleksandr SavychIn the work on the basis of objective laws on the development of technical systems and the features of the VI technological order directions of further development of pump technical systems are analyzed. The reserves of systems that already exist without changing the principle of the working process are shown, the concept of "combined working process" is introduced and the question of the necessity and possibility of searching for fundamentally different physical processes of liquid power transfer, including at the micro level, is raised.