Purpose: to conduct a scientific review and analysis of the methods of regulating the operation of pumps used in various industries in order to determine the most economically and energetically feasible one or to establish the need to develop new methods of regulation at reclamation pumping stations (PS).
Discussion. The materials for the scientific review were the methods regulating the pump operation proposed by various scientists, which are reflected in the scientific literature, author's certificates and patents. During the research, a search, analysis, comparison and systematization of methods regulating the pump operation were carried out. As a result of the analysis of information sources, various types of pump drives used at PS pumps such as internal combustion engines (ICE) and electric motors were determined. Analyzing the possible ways of regulation, it was found that throttling with valves, the use of a bypass, changing the impeller diameter and air intake are used regardless of the type of drive. For drives using ICE, a method of regulation by changing the rotation speed by increasing or decreasing the engine speed with a throttle valve is used. For drives using electric drives, methods for regulating the operation of pumps by changing the rotation speed using various types of electric motors (synchronous and asynchronous), devices and accessories, as well as their arrangement with electric networks or generators are proposed.
Conclusions. As a result of the research, two types of regulation (quantitative and qualitative) with their advantages and disadvantages were identified. The most economically and energetically feasible method which consists in changing the speed of electric drives with asynchronous motors with simultaneous regulation of frequency and voltage was determined. The direction of further improvement of the regulation method using gears or various gearboxes on ICEs was determined for possible use of less powerful ICEs in order to save energy costs.
pumping station, pump, regulation method, drive, flow rate, head, pump operation, operating mode
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