Unpowered rain sewage intercepting well based on aerodynamic design

Abstract

The invention discloses an unpowered rain sewage intercepting well based on aerodynamic design. The unpowered rain sewage intercepting well based on aerodynamic design comprises a drum-shaped tank body, a water inlet pipe communicating with an inner cavity of the tank body is arranged on the side surface of the tank body, after sewage enters the tank body through the water inlet pipe, rotational flow is carried out along the side wall of the tank body, and an air inlet pipe assembly and a drainage pipe are respectively arranged at the upper end and the lower end of the tank body. According tothe intercepting well, through fluid mechanics and aerodynamic design, after sewage enters the tank body through the water inlet pipe, rotational flow is carried out along the side wall of the tank body, negative pressure is formed in the middle of the inner side of the tank body, external air enters the tank body through the air inlet pipe assembly, an air column is formed in the middle of the tank body and rises along with the external water level of the tank body, and the faster the water speed of the rotational flow on the inner wall of the tank body is, the larger the formed air column is, so that a water outlet pipe of the tank body drains water at a relatively stable and uniform water outlet amount, the intercepting effect is achieved, the structure is simple, the cost is low, no movable mechanical part is arranged inside, the service life is long, the practicability is high, and the economic benefits are good.

Description

technical field [0001] The invention belongs to the technical field of interception equipment, in particular to an aerodynamically designed non-powered rainwater interception well. Background technique [0002] At present, in the combined drainage system of urban sewage pipe network in China, the interception technology of the Chinese engineering construction standard CECS91:97 "Code for the Design of Sewage Interceptor Wells in Consolidated System" is generally used to stop dry sewage and initial rainwater from sewage pipes. In the system, the interception well must not only allow the intercepted sewage to enter the sewage interception system to achieve the purpose of improving the environment, but also ensure that rainwater exceeding the street flow rate enters the sewage interception system during heavy rains, so as to prevent the actual flow of the downstream interception pipeline from exceeding Design flow, so it needs to be applied to stormwater interception wells. ...

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Problems solved by technology

[0003] Most of the existing interception wells are divided into three types: weir type interception well, slot type interception well, and slot-weir combined interception well. The common point of these types of interception wells is to reduce the amount of upstream sewage under a certain interception multiple. A certain proportion of sewage is intercepted to the sewage pipeline. With the increase of rainfall, the upstream water level of the pipe network will be higher, resulting in a greater increase in flow, and the sewage discharge of the interception well will also increase proportionally. The amount of water entering the sewage treatment plant The greater the value, the interception well cannot guarantee a relatively constant sewage output, so it is necessary to design a new rainwater interception well and put it into use

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