The Research And Applicaton Of Numerical Method For Water Supply Network System

Water supply pipe network is an important part of water supply system.To master the dynamic working status of water supply pipe network is necessary to managers who engage in water supply career.A great number of domestic and foreign experts have been studing studied on the calculation and analyses method for many years.Along with the development of network technique,the node equations and circuit equations were set up by using seheme method.This paper analyses the relation between the various parameters of complex pipe networks through the establishment of the mathematical model of pipe networks pressure and flow,and determines their model parameters by industrial production test,and provides the necessary data support for synchronized intelligent control of water supply and drainage systems to achieve water and energy savings. This paper contains the following aspects:(1)A suitable method of numerical simulation of water supply pipe netwok is chosen through analysis of hydraulic calculation theories of water supply pipe networks and comparison of the advantages and disadvantages of various numerical simulation method of water supply pipe netwoks.The steps of numerical simulation of water supply pipe networks are explained.(2)The Short process of Circulating System of water supply and drainage system in Benxi Iron&Steel Co.Ltd is study object of this paper,and several pipe netwoks of it are selected.The topology of these networks is simplified logically,and then entered the computer to get a simplied network that is used to simulation.(3)The main parameters of the selected pipe networks are determined.The networks are simulated by hydraulic calculation software EPANET2.0.Through simulations under different conditions,based on existing data and results of simulations,the pipe networks are analyzed in several cases.(4) Water supply and drainage system in Benxi Iron&Steel Co.Ltd is studied by the tests of water supply.Through study of the characters of the pipe networks of cooling water circulation system,the relations between the parameters of different sections of networks and the actual amount of water are determined.The best indicators of the synchronization of different sections of networks and the actual amount of water are given,in order to achieve synchronized intelligent control of circulation systems.