Low pressure improvement method of water supply network based on block and superimposed pressurization

Abstract

The invention discloses a method for improving the low pressure of a water supply pipe network based on blockization and superimposed pressurization. The method first determines the boundary of the low-lying area of ​​the water supply pipe network pressure, and uses EPANET simulation to obtain the boundary of the low-lying area for the actual pressure low-lying area; and then Aiming at the boundary of the low pressure area of ​​the water supply network, the water flow direction of the water supply network is obtained according to EPANET, and the water inlet and outlet pipe sections of the low pressure area are determined. Finally, the pressure of the low-pressure area is improved by using the superimposed supercharging method, which is to directly connect the superimposed equipment to the pipe network through the pipeline. The invention forms a relatively closed block in the low-lying pressure area, improves the pressurization effect of the low-pressure improvement method, reduces the influence of the pressure fluctuation of the pipe network, meets the requirements of the water pressure stability of the water supply pipe network, and can make full use of the water supply pipe network. Residual pressure, combined with different working conditions, select different modes to perform pressure compensation in low-pressure areas.

Description

technical field [0001] The invention belongs to the field of urban water supply, in particular to a method for improving the low pressure of a water supply pipe network based on blockization and superimposed pressurization. Background technique [0002] Due to the corrosion and aging of pipelines, improper construction of roads and other factors, the urban water supply network has problems such as serious leakage and uneven pressure distribution, which not only affects the normal water supply of the city, but also wastes a lot of water resources. Therefore, under the premise of satisfying the normal water consumption of the city, it is of great significance and effect to take pressure management measures to reduce leakage and balance the pressure of the pipe network. [0003] In the water supply pipe network, there is a positive correlation between the pressure and the leakage, that is, the leakage increases with the pressure of the pipe network. According to the different ...

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Problems solved by technology

In view of the local low pressure problem in the water supply network, there are currently four main ways to improve the low pressure: (1) direct pressure regulation through the water supply plant, which will aggravate leakage and uneven pressure distribution; (2) through regulation and storage The pool water pump is used to boost the pressure, and the water in the pool is used to compensate the pressure in the low-pressure area, but this method has the risk of water pollution and waste of residual pressure in the pipe network; pressure, but because of the introduction of too many control devices, the control relationship becomes complicated and energy is wasted; (4) local pressure is improved by methods such as superimposed supercharging, but the supercharging effect of this method is controlled Disadvantages such as large influence of network residual pressure fluctuation and insignificant supercharging effect

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