scholarly journals Full-scale testing of water intake pumps of pumping stations

2019 ◽  
Vol 97 ◽  
pp. 05017
Author(s):  
Khasanov Bakhriddin ◽  
Azimov Azam ◽  
Djurabekov Alisher
Keyword(s):  
Minimum Cost ◽  
Full Scale ◽  
Operational Performance ◽  
Hydraulic Calculation ◽  
Operational Parameters ◽  
Operating Modes ◽  
Pumping Stations ◽  
Pumping Units ◽  
The Cost ◽  
Full Scale Testing

This article is devoted to methods analysis and systems for maintaining the forebay operating modes of pumping stations, which the minimum cost of resources is provided. In modern conditions there is a need to implement measures and solutions to improve the operational performance of pumping stations, which would lead to a decrease in the cost of water supplied. Such activities include the development of methods and systems for the management and maintenance of stations operating modes, which provide the minimum cost of resources. Based on observations, the uneven operation of pumping units over time and as a result of imperfect design of advance cells, the design hydraulic indicators of flow and operational parameters of pumping stations deteriorate. The relevance hydraulic research of forebay regimes and water intakes indicated at a number of meetings on pumps quality. With the development of the recommended set of measures, it is possible to save water and energy resources. The purpose of the work was to conduct full-scale testing of forebay on a large pumping stations in operation, to develop a new design of forebay and its hydraulic calculation. During work performing, energy-hydraulic methods for determining the parameters of pumping units were used.

PSO Applied to Reduce the Cost of Energy in Water Supply Networks

2013 ◽  
Vol 409-410 ◽  
pp. 703-706 ◽  
Author(s):  
Bruno Melo Brentan ◽  
Edevar Luvizotto Jr. ◽  
Lubienska Cristina L.J. Ribeiro
Keyword(s):  
Water Supply ◽  
Extended Period ◽  
Water Supply Systems ◽  
Operational Parameters ◽  
Supply Networks ◽  
Water Pumping ◽  
Cost Of Energy ◽  
Pumping Stations ◽  
The Cost ◽  
Supply Systems

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.

scholarly journals Investigation of the Causes of Malfunctions of Special Electrical Equipment of Pumping Stations

2021 ◽  
Vol 12 (5) ◽  
pp. 1905-1910
Author(s):  
AyubjonVokhidov, Et. al.
Keyword(s):  
Voltage Drop ◽  
Stability Margin ◽  
Electrical Equipment ◽  
Static Stability ◽  
Technical Parameters ◽  
Operating Modes ◽  
Pumping Stations ◽  
Special Power ◽  
The Stability ◽  
Pumping Units

The task of this work was to consider the main technical parameters of pumping stations that affect the operating modes and the overall reliability of a special power supply system. Also, the technological processes of the irrigation pumping station were investigated and the analysis of mechanical and parametric characteristics, the causes of the asynchronous operation of mechanisms and the failure of the pumping units themselves was carried out. As a result of the work, a method for calculating the voltage drop was proposed, a new independent algorithm for calculating the static stability and the stability margin for the active power of special electrical equipment was developed.

scholarly journals Achieving reliability and energy savings in operate of pumping stations

2021 ◽  
Vol 264 ◽  
pp. 03003
Author(s):  
Oleg Glovatskii ◽  
Jaloliddin Rashidov ◽  
Вoybek Kholbutaev ◽  
Khayrullo Tuychiev
Keyword(s):  
Energy Savings ◽  
Operating Conditions ◽  
Hydraulic Calculation ◽  
Practical Significance ◽  
Flow Section ◽  
Resource Saving ◽  
Irrigation Systems ◽  
Additional Energy ◽  
Pumping Stations ◽  
Pumping Units

Hydromechanical equipment of pumping stations of irrigation systems, including the main equipment of pumping stations of the Amu-Bukhara machine channel, was taken as the object of research. The study aims to assess the operating conditions of pumping stations and improve the main units' reliability by developing new units that ensure reliable and resource-saving operations. An important consequence of using new elements of irrigation systems during reconstruction is an increase in the unit capacity of regulated pumping units, which gives additional energy savings and reduces technological costs by 15-20%. The practical significance of the research results is based on the developed methods of hydraulic calculation of the flow in the flow section of the pumps, the assessment of reliability during operation under various conditions of the quality of the pumped water, and the criteria of its state.

scholarly journals Effect of parallel connection of pumping units on operating costs of pumping station

2019 ◽  
Vol 97 ◽  
pp. 05014 ◽  
Author(s):  
Nazir Ikramov ◽  
Eduard Kan ◽  
Mirasil Mirzoev ◽  
Takhir Majidov
Keyword(s):  
Irrigation System ◽  
Operating Mode ◽  
Operating Costs ◽  
Hydraulic Calculation ◽  
Parallel Operation ◽  
Capital Costs ◽  
Pumping Stations ◽  
Pressure Pipeline ◽  
Large Irrigation ◽  
Pumping Units

In Uzbekistan, as well as in many other countries of the world, pumping units operate in parallel into a common pressure pipeline at some pumping stations of the irrigation system. This was done mainly to save on the capital costs of the pipeline. Analysis and hydraulic calculation of the existing large irrigation pumping stations with pumping units operating in parallel showed that at some of them the conditions of parallel operation of pumping units were impaired. As a result, a negative hydraulic process arises, in the form of self-induced vibrations of the water flow in the pipeline, which leads to various damage and deformation of the pressure pipeline and pipeline supports. The calculations showed that with different modes of pumping units operating together, the power consumption at the Amu-Bukhara-1 and Namangan pumping stations, accounting for one unit increases by 0.72 ... 6.53%, and at the Amu-Bukhara-2 and Amu-Zang-2 pumping stations, this index, on the contrary, decreases by 0.32 ... 1.67%. Therefore, a properly selected operating mode of parallel-connected pumping units will lead to a decrease in operating costs, i.e. decrease in the prime cost of raised water.

scholarly journals Determination of Efficiency of Operation of the Existing Pumping Equipment of Oil-Pumping Stations

2020 ◽  
Vol 129 (4) ◽  
pp. 46-50
Author(s):  
V. V. Shalai ◽  
◽  
M. O. Myznikov ◽  
M. I. Kononova ◽  
◽  
...  
Keyword(s):  
Rational Use ◽  
Operating Modes ◽  
Pumping Stations ◽  
Oil Pipelines ◽  
Pumping Equipment ◽  
Pumping Units

Improving the efficiency of operation of main pumping units is one of the pressing issues of modern practice of operating oil pipelines. The change in pumping capacity leads to a change in the operating modes of pumping equipment. This article proposes a methodology for assessing and improving the efficiency of the operation of oil pipelines based on the rational use of existing pumping equipment of pumping stations.

scholarly journals PROCEDURE FOR SELECTION OF GAUGE COMPOSITION OF TRUCK TRACTORS USING INTEGRAL COEFFICIENT

2021 ◽  
pp. 88-95
Author(s):  
N. S. Zakharov ◽  
◽  
M. V. Nemkov ◽  
V. M. Nemkov ◽  
◽  
...  
Keyword(s):  
A Priori ◽  
Minimum Cost ◽  
Rolling Stock ◽  
Main Task ◽  
Integral Coefficient ◽  
Operational Parameters ◽  
Special Equipment ◽  
Oil Pipeline ◽  
The Cost

The article presents a solution to the problem of choosing the brand composition of truck tractors for the recruitment of transport divisions of oil pipeline enterprises. The main task of transport departments is to meet the needs of the main production. The equipment is operated under harsh conditions, as well as after the end of the regulatory period of use and needs to be updated quickly. Despite the timely maintenance and repair of freight rolling stock, frequent failures and increasing repair costs make further operation economically inefficient. When updating the fleet of vehicles, there is a problem in choosing the best in terms of the technical characteristics of the vehicle, but at the minimum cost. The purpose of the study is to optimize the costs of acquiring and operating special equipment of Transneft-Siberia JSC by developing a methodology for determining the rational grade composition of truck tractors. According to the a priori ranking method, the opinion of specialists and heads of transport divisions of Transneft-Siberia JSC was determined. For the study, the most popular brands of truck tractors of domestic and foreign production were chosen. As a result of the survey, the ranks of operational indicators of truck tractors and their weight are determined by the reverse ratio. The most signifi¬cant indicator as a result of a priori ranking is the cost of one unit of the vehicle. Integral coefficient components calculated relative to average value of each indicator are identified for each indicator. As a result of the study, it was revealed that for the renewal of the fleet of truck tractors, it is advisable to give preference mainly to foreign manufacturers. The integral factor, taking into account the weight of operational parameters, makes it possible to objectively evaluate the quality of truck tractors. The method of determining the integral coefficient is proposed, when using which it is possible to reduce the cost of acquiring and operating vehicles with an increase in the development of special equipment. Further areas of research are determination of integral factors for the fleet, including technological transport, as well as determination of the optimal nomenclature of special equipment for transport divisions of oil pipeline industry enterprises.

scholarly journals Assessment of Technical Condition and Readiness of Pump Units by Diagnostic Methods

2021 ◽  
Vol 320 ◽  
pp. 04010
Author(s):  
M. M. Muhammadiev ◽  
O. Y. Glovatsky ◽  
R. R. Ergashev ◽  
N. R. Nasyrova ◽  
F. S. Saidov
Keyword(s):  
Working Conditions ◽  
Diagnostic System ◽  
Technical Condition ◽  
Diagnostic Methods ◽  
Operating Costs ◽  
Power Equipment ◽  
Time Intervals ◽  
Pumping Stations ◽  
Pumping Units ◽  
The Cost

The article presents the developed methods and models for analyzing the dynamic indicators of pumping units for different time intervals of their state during operation. The main tasks of assessing the technical condition are to identify deviations from design solutions, the presence of damage, defects in pump structures that can cause accidents. The results of the development of a diagnostic system for pumping units at pumping stations are presented. The working conditions of the connecting links of the main pumping and power equipment and its diagnostics are considered. The introduction of the proposed diagnostic system will lead to a reduction in operating costs of pumping units and the cost of their maintenance.

scholarly journals FLOW CAPACITY OF MAIN OIL PIPELINES WITH PREDEFINED OIL PUMPING STATIONS LOCATION WITH PERIODICAL PARTIAL OIL DUMPING

2019 ◽  
pp. 65-71
Author(s):  
Y. V. Yakymiv ◽  
O. M. Bortniak
Keyword(s):  
Operating Mode ◽  
Transportation Systems ◽  
Operational Parameters ◽  
Oil Refineries ◽  
Discharge Point ◽  
Operating Modes ◽  
Oil Transportation ◽  
Pumping Stations ◽  
Oil Pipelines ◽  
The Impact

Transportation of oil via main pipelines often requires the need for a permanent or periodic dumping of some part of the flow for further shipment of crude oil to oil refineries or filling stations. The application of such technology leads to a change in the operating mode of oil pumping stations and the oil transportation system in general. In case of emergency, an analogue of dumping is an oil leak from the pipeline in a case of violation of its integrity. Resetting a part of the flow is accompanied by a change in a liquid flow ahead of and behind the discharge point, which inevitably leads to a redistribution of pressures at the inlet and outlet of transitional petroleum pumping stations. Increasing of pressure at the output of the stations may lead to the violation of the pipeline strength; reducing of input shoring may cause cavitation operating modes of the equipment. Therefore, the study of the impact of discharges on the parameters of the operation of oil transportation systems in order to ensure their reliable, safe and economically efficient functioning is a relevant point of this area. For this purpose, based on the proposed calculated algorithms implemented in the software, the authors conducted the research on the impact of periodic oil discharges on the redistribution of hydraulic flows, energy losses at the bends, pressure at the inlet and outlet of oil pumping stations, as well as the volume of trunk oil pipelines capacity. The approbation of the proposed elaboration is carried out by defining the operational parameters of processing in functioning of oil and transport system «Druzhba» at the Mozyr-Tukholsky pass, which runs throughout the territory of Ukraine. Based on the analysis of the obtained results it was established that, depending on the volume of a discharge, the location of the limiting area, which limits the entry capacity of the trunk pipeline in general, might be changed. At the same time, the bend, ahead of which the part of oil is discharged, is not always limiting. Increasing the volume of a discharge leads to growing capacity of the pipeline at the area ahead of the point of discharge in the case when the limiting pipeline bend is behind the discharge point. If such a bend is located on the pipeline ahead of the discharge point, the increasing discharge does not affect the capacity of the initial area of the pipeline.

scholarly journals Simulation of oil pipeline shutdown and restart modes

2021 ◽  
Vol 316 (1) ◽  
pp. 15-23
Author(s):  
T. T. Bekibayev ◽  
◽  
U. K. Zhapbasbayev ◽  
G. I. Ramazanova ◽  
A. D. Minghat ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Power Consumption ◽  
Rheological Properties ◽  
Hydraulic Calculation ◽  
Stationary Processes ◽  
Oil Pipeline ◽  
Heating Furnaces ◽  
Optimum Parameters ◽  
Pumping Stations ◽  
Pumping Units

The paper is devoted to the simulating of non-stationary processes of shutdown and restart on the example of a section of the Zhetybai-Uzen “hot” oil pipeline. A mathematical model of thermal-hydraulic calculation is given taking into account the rheological properties of the pumping oil. The special module of the SmartTran software developed by the work’s authors carried out the calculations. In the calculations, the decrease in time of oil temperature in the pipeline during cooling and the increase in oil pressure, temperature, velocity after the restart are determined. In addition, the calculations determine the power of pumping units, heating furnaces and the power consumption, which are necessary for restart of the pipeline after the shutdown. Simulation the processes of the pipeline cooling and restart after a shutdown makes it possible choosing the optimum parameters of pumping units at pumping stations and the time of safe shutdown of the oil pipeline.

Analysis of experience in assessing the extent of full-scale testing of anti-aircraft missile products during development and modernization

2019 ◽  
pp. 58-68
Author(s):  
V. V. Doronin
Keyword(s):  
Practical Experience ◽  
Full Scale ◽  
Development Work ◽  
Flight Tests ◽  
Stage Of Development ◽  
Full Scale Tests ◽  
The Cost ◽  
Experimental Stage ◽  
Full Scale Testing

The paper focuses on the approach to assessing the number of launches of anti-aircraft missile products at various stages of full-scale tests required for the implementation of development work. We analyzed the approach to determining the extent of flight tests using the practical experience of the “MKB” Fakel” of 1960s. Furthermore, we proposed a method for estimating the cost of the experimental stage of development work

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