Vibrational protection of the pumping stations in water-supply systems

2014 ◽  
Vol 34 (4) ◽  
pp. 199-204 ◽  
Author(s):  
G. S. Aver’yanov ◽  
V. N. Bel’kov ◽  
Yu. A. Bur’yan ◽  
A. B. Korchagin ◽  
V. S. Balashov
2013 ◽  
Vol 409-410 ◽  
pp. 703-706 ◽  
Author(s):  
Bruno Melo Brentan ◽  
Edevar Luvizotto Jr. ◽  
Lubienska Cristina L.J. Ribeiro

The growth of urban population and subsequent expansion of the cities impose difficulties of gather a reliable water supply systems that attend the fluctuations of demand throughout the day, and their operation with appropriate hydraulic and operational parameters. The search of better routines for water pumping stations with both starting and stopping of pumps or use of variable speed devices has become increasingly common, and the motivation of this search is found in the need for energy saving. But the task is arduous and becomes fertile field for the application of modern techniques and robust optimization. Noteworthy are currently those that seek their inspiration in nature systems, such as Particle Swarm Optimization, which is based on intelligence of groups, such as schools of fish or swarms of bee. By this way, the present work aims to contribute to the topic, developing a hybrid algorithm (simulator-optimizer) for determination of optimized routines for pumping station i.e., routines that seek the best operational routine for an extended period of 24 hours.


Revista DAE ◽  
2019 ◽  
Vol 221 (68) ◽  
pp. 53-59
Author(s):  
Silvia Fernanda Paffrath

Resumo Cada vez mais têm sido estudadas formas de minimizar gastos com energia e/ou de obter formas alternativas de geração, principalmente pela diminuição de oferta hídrica em diversos locais. Nos sistemas de abastecimento de água, são altos os gastos com energia, principalmente nas estações elevatórias. Em sistemas que fazem a distribuição de água por gravidade, não é rara a utilização de válvulas redutoras de pressão em pontos especí- ficos em que é necessária essa redução para garantir condições favoráveis de transporte de água na tubulação. Nesse sentido, ocorre dissipação de energia que poderia ser aproveitada no próprio sistema. Tendo em vista esse aproveitamento energético, esse estudo tem como objetivo determinar de forma teórica a potência gerada por uma bomba funcionando como turbina em locais onde há excedente de pressão, tomando por base dados de um sistema teórico de abastecimento de água de município de pequeno porte. Os resultados mostram que a alternativa é tecnicamente viável, gerando 2,2 KW de potência e 16,4 MW/ano de energia, que poderia ser uti- lizada no próprio sistema, em pontos onde seria necessário bombeamento, seja na captação ou na própria rede de abastecimento, em transição de zonas baixas para altas. Palavras-chave: Eficiência energética. Bomba funcionando como turbina (BFT). Abstract It has increasingly been studied ways to minimize energy costs and to obtain alternative forms of generation, mainly by the reduction of water supply in various locations. In water supply systems, energy costs are high, especially in pumping stations. In systems that make the distribution of water using gravity, it is not uncommon to use pres- sure reducing valves at specific points at which this reduction is necessary to ensure favorable conditions of water transport in the pipe. In this sense, there is dissipation of energy that could be used in the system itself. In view of this energy use, this study aims to determine theoretically the power generated by a pump functioning as turbine in places where there is excess pressure, based on data from a theoretical system of a small town water supply. From the results, the alternative proved to be technically feasible, with power generated at 2.2 KW and energy at 16.4 MW/year, which could be used in the system itself, at points where pumping would be required, either on capture or in the supply network, in transition from low to high areas. Keywords: Energy efficiency. pump functioning as turbine.


2020 ◽  
Author(s):  
Вкитор Чупин

Group water supply systems (GWSS) are designed for centralized water supply of settlements located in waterless areas and remote from drinking water sources. GWSS are an object of increased attention, have a great social and environmental significance, require significant capital investments and financial resources for operation, ensuring the required reliability and manageability. Therefore, the issues of optimization of design solutions for the structure and parameters of structures are relevant and require improvement and development of methodological and software solutions to these problems. The paper proposes a method of redundant design schemes and a method of schematic and structural optimization based on a sequential and iterative solution of two problems: for a fixed value of flows in the graph of the redundant scheme, network parameters are optimized (pipeline diameters, heads, and the composition of pumping stations); with fixed network parameters, the problem of the distribution of water flows is solved in the GWSS.


2019 ◽  
Vol 102 ◽  
pp. 03005 ◽  
Author(s):  
Roman V. Chupin ◽  
Minh Ngoc Pham ◽  
Viktor R. Chupin

In recent years, due to the country's energy conservation policies in cities and towns, there has been a steady decline in the specific water consumption. Many industrial enterprises switched to water-saving technologies and circulating water supply systems. Such a policy favorably affects the environmental safety of territories by reducing wastewater discharges into water bodies and saves energy for pumping water and wastewater. At the same time, due to a decrease in the speed of water movement, its quality indicators deteriorate and stagnant zones appear, and due to the reduction of water consumption, pumping stations began to operate in low efficiency modes. The article proposes to solve this problem by decommissioning certain sections of the network and facilities, which improve the speed of other pipelines and provide pumping stations with the highest efficiency. For this purpose, a technique has been developed to optimize flows in existing water supply systems and its implementation in the Trace – BK software package. A new method of optimizing operating costs for water supply systems in the face of decreasing water consumption is proposed. This technique makes it possible to identify inefficient sections of network and take them out of operation while improving the operation speed of other pipeline and bring the operation of pumping stations to the mode with the highest efficiency.


2020 ◽  
pp. 122-128
Author(s):  
M.S. ALI ◽  
◽  
D.S. BEGLYAROV ◽  
E.E. NAZARKIN

The purpose of this work is to provide a method for engineering calculation of an unsteady process in gas-liquid mixtures in complex hydraulic systems. When determining the optimal version of the pressure system, transient processes should be considered which occurrence is connected with the change of the operation mode of pumping units: emergency and planned turning-off,starting pumps, regulation of their operation, changing of the opening degree of shut-off and safety valves. Therefore, it is necessary to be able to determine changes in parameters of pressure water supply systems during transient processes. Accounting for the presence of the undissolved air in hydro systems is one of the most important factors to ensure the reliability of calculation since the presence of air leads to the increased compressibility in the medium due to which there occur sharp pressure fluctuations. Hydroelectric and water management include pressure systems with pumping stations, providing the necessary required amounts of water to specified heights. As a result of the work, the following conclusions were obtained, which allow us to revise the methodology for calculating transients in water pipelines of pressure water supply systems. The simplest and most effective measure to deal with an unacceptable increase in pressure in the event of a hydraulic shock caused by engine shutdown is to pass water through the pump in combination with the intake and pinching of air at the points where the continuity of the flow is formed. In pressure pipelines transporting a single-phase liquid (for example, water), there is always a small amount of undissolved air, which has a significant impact on the non-stationary processes that occur in the pipelines. Therefore, under certain conditions, even a single-phase liquid should be considered as a two-phase liquid and this circumstance should be taken into account when calculating pressure unsteady movement and hydraulic shock in pipes.


2018 ◽  
Vol 7 (3.2) ◽  
pp. 653 ◽  
Author(s):  
Valeriy Novokhatniy ◽  
Oleksandr Matyash ◽  
Sergiy Kostenko

The basics of the reliability theory of small settlements water supply systems were considered. Methods of the reliability calculation of the supply-distribution complex structures were reviewed: pumping stations, water pipes and branched network. The mathematical reliability model of the water supply technological process to the most distant consumers were constructed according to the water supply selected directions. The real possibility of water supply reliability calculation on an actual example was shown and a graphical representation of the results was performed.  


2021 ◽  
pp. 111-119
Author(s):  
D.S. BEGLYAROV ◽  

Currently, the problems of energy conservation and energy efficiency are among the most pressing both in the Russian Federation and the world community. It is no secret that the main consumers of electricity are pumping stations. Reducing the power consumption of pumping stations is a priority worldwide. The use of energy efficient technologies and alternative methods of supplying water can significantly save energy. One of these methods of water supply is the use of a hydraulic ram. The purpose of this work is to summarize materials and introduce the features of the use of hydraulic ram on rivers in those places where there is a problem of energy supply. The use of hydraulic ram as a water-lifting device is a rational solution, especially in mountainous areas. Based on the analysis of theoretical information, the results of research and technical developments of a number of institutes and organizations, various ram installations and their calculations are presented. It is emphasized that the positive aspects of the ram allow under the current conditions using these installations in hydraulic and water construction without the introduction of energy-saving technologies. Hydroramplants operate under winter conditions at temperatures up to –25°C. In addition, the use of hydraulic ram improves the safety of water supply systems. extends the service life of the system, thereby increasing the overall effi ciency of the water supply and distribution systems. The analysis of existing equations made it possible to establish optimal formulas for determining the productivity of rams and the efficiency of the plant. These expressions are the most justified ones and fully reflect the physical essence of the processes arising in hydro rams.


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