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Method for ensuring uniform water inflow of water collecting basin in fan-shaped municipal sewage lifting pumping station

A technology for urban sewage and water collection tanks, which is applied in the direction of sewage removal, waterway systems, water supply devices, etc., can solve the negative impact of the safe and stable operation of urban sewage lifting pumping stations, and is affected by surrounding buildings, roads, bridges, etc. Problems such as poor inlet water flow, to ensure safe, stable and efficient operation, ensure the uniformity of flow velocity distribution, and prevent the generation of surface vortices

Active Publication Date: 2018-12-21
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of urban planning, pipe network layout and other factors, the layout of the inlet buildings of the urban sewage lifting pump station is cramped, and sometimes it is unavoidable to be affected by surrounding buildings, roads, bridges, etc., so the fan-shaped pump room structure has to be adopted, which is likely to cause pump damage. Poor flow state of the water in the collection tank of the house will lead to poor uniformity of the pump inflow, which will have a negative impact on the safe and stable operation of the urban sewage lifting pump station

Method used

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  • Method for ensuring uniform water inflow of water collecting basin in fan-shaped municipal sewage lifting pumping station
  • Method for ensuring uniform water inflow of water collecting basin in fan-shaped municipal sewage lifting pumping station
  • Method for ensuring uniform water inflow of water collecting basin in fan-shaped municipal sewage lifting pumping station

Examples

Experimental program
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Effect test

Embodiment 1

[0059] The number of sumps is M=2, the length of the radial side walls on both sides of the sumps is L=9.0m, and the included angle is α=40°. The number of inlet box culverts 2 corresponding to each sump is N=2, and the width B=K1×(α / 360)×L=1.8m and K1=0.9, height H=0.2L=1.8m, horizontal length L1=0.233L=2.1m, slope angle θ=25° of the slope section in the sump , the number of 3 sets of eight-shaped diversion piers corresponding to each sump is N1=2, the front end of the eight-shaped diversion piers 3 is facing the outlet of the water inlet box culvert 2 and the distance between them is L2=0.0333L=0.3m, a single diversion pier The length of the flow pier L3=0.222L=2m, the distance between the front ends of the eight-shaped flow diversion pier 3 and the two pier B1=0.333B=0.6m, the included angle β=15° and K2=0.75, the number of folded beams 4 S=3, The height H1=0.111H=0.2m, the width B2=0.075L3=0.15m of the rectangular section of the folded beam 4, the vertical distance between...

Embodiment 2

[0061] The combined rectification device described in this embodiment is different from Embodiment 1 in that: the width B=1.75m and K1=0.875 of the water inlet box culvert 2, the height H=0.222L=2m, the slope section in the sump Horizontal length L1=0.2L=1.8m, slope angle θ=30°, the distance between the front end of the splayed diversion pier 3 and the outlet of the water inlet box culvert 2 L2=0.02L=0.18m, the length of a single diversion pier L3= 0.2L=1.8m, the distance between the front ends of the eight-shaped diversion pier 3 and the two piers B1=0.2B=0.35m, the included angle β=20° and K2=1.0, the height of the rectangular section of the multi-layer folded beam 4 H1=0.1H= 0.2m, width B2=0.05L3=0.09m, vertical distance D1=0.75H1=0.15m, D2=H1=0.2m between two adjacent beams; font-shaped diversion piers 3 and folded beams 4 are made of reinforced concrete materials .

Embodiment 3

[0063] The combined rectifying device described in this embodiment differs from Embodiments 1 and 2 in that: the width of the water inlet box culvert 2 is B=1.7m and K1=0.85, the height H=0.3L=2.7m, the water inlet box The horizontal length L1=0.3L=2.7m from the outlet of the culvert 2 to the slope section 5 at the bottom of the sump 1, the slope angle θ=20°, and the distance L2=0.05L between the front end of the eight-shaped diversion pier 3 and the outlet of the culvert 2 of the water inlet box =0.45m, the length of a single diversion pier L3=0.3L=2.7m, the distance between the front ends of the eight-shaped diversion pier 3 and two piers B1=0.4B=0.68m, the included angle β=12° and K2=0.6, the folded beam 4 The height of the rectangular section is H1=0.148H=0.4m, the width B2=0.1L3=0.27m, the vertical distance between two adjacent beams is D1=0.75H1=0.3m, D2=H1=0.4m.

[0064] Such as Figure 4 As shown, the three-dimensional flow numerical simulation method is used to compa...

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Abstract

The invention discloses a method for ensuring uniform water inflow of a water collecting basin of a fan-shaped municipal sewage lifting pumping station. A combined rectifying device consisting of a figure-eight-shaped diversion pier and a folding beam is arranged at the front end of the water collecting basin of the fan-shaped municipal sewage lifting pumping station. The method for ensuring uniform water inflow of a water collecting basin of a fan-shaped municipal sewage lifting pumping station adopts the combined rectifying device consisting of the figure-eight-shaped diversion pier and thefolding beam to achieve effects of improving the water inflow state of the water collecting basin of the lifting pumping station, and effectively ensuring the uniformity of flow velocity distributionon a horizontal plane and the sound inflow state on a vertical plane of the incoming flow of pump units of the fan-shaped municipal sewage lifting pumping station. The method for ensuring uniform inflow of a water collecting basin of a fan-shaped municipal sewage lifting pumping station has the advantages of being high in engineering application value for ensuring safety, reliability and efficiency of the pumping station, simple in structure and convenient to construct and manufacture, and is suitable for promoting and using in the design and renovation of a municipal sewage lifting pumping station in the form of a fan-shaped pump room structure.

Description

technical field [0001] The invention relates to the technical field of municipal rain and sewage drainage engineering of water conservancy projects, in particular to a method for ensuring uniform inflow into a sump of a fan-shaped urban sewage lifting pump station. Background technique [0002] With the rapid development of urbanization, the discharge of rainwater and sewage in many cities in my country has increased significantly, and the pollution of cities and their surrounding water bodies will face severe challenges. In order to protect the city and its surrounding water bodies and avoid the shortage of urban water resources, the construction of urban rainwater and sewage treatment projects has received extensive attention. [0003] The sewage lifting pump station is an important part of the urban rainwater treatment project, and plays an important role in ensuring the normal transportation of rainwater and sewage. Due to the influence of urban planning, pipe network l...

Claims

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Application Information

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IPC IPC(8): E03F5/22E03F5/10E03F1/00
Inventor 张睿李京鸿徐辉
Owner HOHAI UNIV
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