bbk 000000
UDC 628.14.001.57
Shishov S. Yu., Ivanov Vlad. Mikh., Bychkov D. A., Nezamaev E. A.
Hydraulic model for monitoring and control of the Tumen public water supply operation
Summary
Geographic information technologies allow facilitating significantly the task of operating the public water supply of an urban. In Tumen designing a hydraulic model of the water distribution network operation on the basis of «Zulu» program-design package has been carried out since 2006. The system is aiming at improving the quality, reliability and energy efficiency of the water supply and distribution operation. At the initial stage an integrated design scheme of the major water mains was developed. This hydraulic model provided for developing and implementing a number of important measures for the optimization of the water distribution network operation mode in Tumen. To improve the accuracy the model was further detalized by adding pipelines to every customer into the design scheme. At the same time pipeline certification started with recording results in the geographic information system. Calibration of the detailed hydraulic model was carried out on the basis of the information obtained from 530 pressure gauges installed at the residential service connections. The carried out calculations were noted for high accuracy (to 0.3 atm deviation). With the help of the detailed hydraulic model the following tasks are being accomplished in «Tumen Vodokanal» LLC: changing the operation modes of the pumping stations, planning water mains outage, determining technical possibility of connecting new objects. Basing on the calculations in 2011 a project of installing 24 pressure control valves in the water distribution network was implemented. The geographic information system is noted for the function of using map layers of tile-servers in Internet, as well as for possible data storage and failure analysis. The information obtained in the process of using the detailed hydraulic model is widely used by the distribution network operating service of «Tumen Vodokanal» LLC for the team task description and determining gate valve closure pattern.
Key words
pipeline , pump , pressure regulator , geoinformation system , control points in the distribution network , hydraulic model , certification
|
bbk 000000
UDC 628.14.001.57
Butko A. V., Kur'ianov S. A., Shibaeva N. A.
The use of geographic information systems in the Rostov Vodokanal operations
Summary
The efficient operation of water supply systems in the cities is impossible without using advanced geographic information technologies. They provide for accumulating and organizing significant amounts of the daily incoming data that characterize the process and energy parameters of different equipment at the water and wastewater facilities – from water intakes to effluent outfalls. The information from 44 master control points, 80 water pumping stations of the first through fourth stages, potable and process water meters, meters of the effluent discharged into the surface water bodies is acquired in real-time mode. Processing this information, controlling and adjusting 45 pressure control valves and other work related to maintaining the set process flow pattern at the water and wastewater facilities located on the territory of more than 34,850 hectares require reliable assistants. These particular assistants, ZuluHydro and ZuluDrain home-made systems, are used by the engineers and technicians of «Rostovvodokanal» JSC in their routine work. The practical use of the processed information in the analytical and operational activities significantly reduces the time for making technologically correct decisions and provides for obtaining real benefits in the form of reduced energy costs and saving in material resources consumption.
Key words
water supply , pumping station , water disposal , software package , pressure regulator , geoinformation system , hydraulic model , certification of infrastructure facilities , metering arrangement , telemetry , hydraulic model, analysis of the accident cause
|
bbk 000000
UDC 628.15.004.69
Radetskii Mikhail, Davydov A. B., Kolevatov I. A.
Optimization of Operation of a City Water Supply System
Summary
Methods of the optimization of operation of a municipal water supply network of the city of Novosibirsk are presented. A number of variants of installation of reducing valves on different sites of the water supply network at the neighbourhoods Pashino (to itself) and Severny (after itself) of the Kalininsky District of the city are considered in detail. The results of the operation of various pressure regulators and frequency converters used at water supply pumping stations during the last few years are given. As a result of the installation of pressure regulators on sections of the water supply network of the Pashino and Severny neighbourhoods of Novosibirsk the total pumping capacity of stations Drinking Centre and Heat-and-Power Station-4 (HPS-4) has been cut by 10–15% and the pressure at the fourth-stage pumping station (HPS-4) has been reduced by 10 m H2O. At the same time the breakdown rate of the water supply networks of the neighbourhoods has dropped by 10–20%.
Key words
water supply network , pumping station , pressure regulator , frequency converter , excessive head , breakdown rate
|
bbk 000000
UDC 628.144.22
Riffel E. V., Shishov S. Yu., Tchernyayev D. D., Rodin N. V., Bychkov D. A.
Developing and implementing measures on pressure normalization in the water supply system of Tyumen city
Summary
The experience of introducing pressure regulators in the water distribution network of Tyumen city is presented. The procedure of designing the network operation parameters basing on hydraulic simulation with the use of advanced software is set. The possible efficient long-term use of pressure regulators under subzero weather conditions typical for Siberia is shown. The practical experience of the equipment installation and adjustment is laid out; the specific features of the equipment operation are considered. Based on the pipeline failure number the analysis of the efficiency of the measures on the free head normalization in the network is carried out. The installation of pressure regulators in the Tyumen water distribution network resulted in the failure rate reduction and power saving at the pumping stations.
Key words
water supply and water distribution system , pressure regulator , hydraulic modeling , reduction in accident rate , water supply reliability
|
bbk 000000
UDC 696.115
Strelkov A. K., Zotov Yu. N., Mikhailova I. I.
Calculation of hydraulic operation mode of in-door plumbing systems in tenement houses
Summary
The results of analytical investigation of selecting the characteristics and equipment for the in-door plumbing systems with the purpose of providing for the safe living conditions in tenement houses are presented. The algorithm of hydraulic calculations with account of the regulatory requirements to the advanced energy efficient domestic water supply and characteristics of the modern equipment is described. The necessity of making hydraulic calculations at the maximum and minimum water flow is shown. The mechanism of selecting optimal solutions for determining hydraulic characteristics of plumbing systems is considered. The recommendations for developing methodical procedures the fulfillment of which will ensure the legitimacy of the methods of making hydraulic calculations of the in-door plumbing systems in tenement houses are given. The main requirement to determining the pipe diameter in automated water supply systems is ensuring the compliance of the controlled medium parameters to the technical characteristics of the control valve to provide for the proper operation. The traditional method of selecting a pressure reducing valve provides for an approximate result because some basic data used in calculations is undefined until the hydraulic design is completed. Therefore, the implementation of this method involves design and check hydraulic calculations. Selecting a pressure reducing valve is significantly simplified when using the method developed in the Samara State University of Architecture and Civil Engineering. In contrast to the traditional in the method developed in Samara State University of Architecture and Civil Engineering all the basic data can be uniquely determined before making hydraulic calculations.
Key words
pipeline , hydraulic design , pressure regulator , plumbing system , water consumption rate
|
DOI 10.35776/MNP.2020.04.07
UDC 628.14:621.646.43
Rozhnov Evgenii
Sustainable use of free head
Summary
The linear remoteness of the water facilities in the city of Novokuznetsk reaches 40 km with a difference in elevations of 157 m. The two main water intakes of the city are located at the distance of 20 km from each other, which suggests the availability of zones with different free head. Pressure control and water distribution among the districts was traditionally carried out by throttling shutoff valves, and 119 pumping stations with pumps of 0.75–1250 kW capacity were operating in the initial water supply scheme. Based on the analysis of possible solutions to the problem, proposals were made for the installation of pressure reducing valves, an installation diagram was developed, and the operating modes of the new system were determined. The installation of regulators throughout the city was carried out in two stages. In 2016, as a result of the installation of 7 regulators, 13 booster pumping stations with a total energy consumption of more than 150 kW were phased out; at the second stage in 2017, 12 more regulators were installed and 8 more pumping stations with a total energy consumption of 40 kW were put out of operation; and 5 pumping stations were upgraded with pump replacement for lower capacity. The project payback period was 4 years.
Key words
water supply system , energy efficiency , pumping station , pressure regulator , adjustment of distribution networks
Скачать/download (PDF) free access
|
|
