Volute device for realizing orderly water drainage and waterlogging prevention in cities

Abstract

The invention discloses a volute casing device for realizing orderly water drainage and waterlogging prevention in cities. The device comprises underground pipe networks for cities, and water collecting wells communicated with the underground pipe networks, wherein the underground pipe networks are connected with a main pipeline, and water flow spiral movement generating devices are mounted at water outlets of the water collecting wells; the water flow spiral movement generating devices adopt volute structures and are provided with tangential water inlets and axial water outlets, the axial water outlets are communicated with water drainage pipes at the water outlet positions of the water collecting wells, and the tangential water inlets are used for guiding the water into an inner cavity of a volute casing in the tangential direction of the circumference of the side surface of the volute casing. The device can be used for effectively reducing the equivalent flow passing area of pipelines at the water outlets of the water collecting wells at high-elevation regions and the water flow speed of the inner parts of the pipelines, realizing the purpose of coordinating the water drainage flow amount in different regions, and contributing to relieving the waterlogging disasters caused by heavy rainfall in the cities.

Description

technical field [0001] The invention relates to a volute device for realizing urban orderly drainage and waterlogging prevention. Background technique [0002] In the urban drainage system, the terrain differences in different regions significantly affect the drainage capacity of the drainage pipes in the corresponding region and the drainage effect in heavy rainfall. According to the relevant theories of fluid mechanics, under the action of the head pressure, the water flow rate in the pipeline increases with the increase of the head pressure. Therefore, when all the drainage pipes have the same pipe diameter, the pipes have a stronger drainage capacity due to the higher head pressure in the high-lying area. Quickly drain away; in low-lying areas, the head pressure is low, and the drainage capacity of the pipeline is relatively weak, so it is difficult to drain away rainwater in time and a large amount of rainwater is stagnated. At present, the layout of my country's urba...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing drainage methods cannot effectively limit the rainwater discharge speed in high terrain areas and easily cause waterlogging disasters in low terrain areas when the city encounters heavy rainfall, the present invention provides a method that can effectively limit the rainwater discharge speed in high terrain areas. A volute device that achieves priority discharge in low-lying areas and realizes urban orderly drainage and waterlogging prevention

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