Combined rectifying device for improving inlet flow patterns of urban rainwater pump stations

Abstract

The invention discloses a combined rectifying device for improving inlet flow patterns of urban rainwater pump stations. The rectifying device is arranged inside a gate well. The gate well is arranged between a rainwater main pipe and an inlet water box culvert. The radius of the gate well is R. The rectifying device comprises a beam, a main flow dividing and guiding pier, an upper flow dividing and guiding pier and a lower flow dividing and guiding pier. The combined rectifying device can effectively homogenize the flow velocity distribution of the flow from the rainwater main pipe into the gate well on the horizontal and vertical faces, and homogenize the water flowing in the inlet water box culvert and the water collecting tank in the rainwater pump stations, which can solve a series of unhealthy hydraulic flow problems that mainstream inside the gate well is in the middle, the flow velocity distribution in the inlet water box culvert is uneven, inflow in the water collecting tank is bias and the like. It is guaranteed that the urban rainwater pump stations have good inlet flow conditions. The device has a great significance in ensuring the safe, efficient and stable operation of pump stations and pump units.

Description

technical field [0001] The invention belongs to the technical field of water conservancy projects and municipal engineering pumping stations, and in particular relates to a combined rectifying device for improving the water inlet flow state of urban rainwater pumping stations. Background technique [0002] Setting up rainwater pumping stations in urban drainage systems plays an important role in preventing urban waterlogging. The urban rainwater pumping station mainly includes rainwater mains, gate wells, water inlet box culverts, grid wells, sump tanks and other water inlet structures. Due to the constraints of urban planning, terrain, scale and other conditions, the rainwater pumping station needs to minimize the occupied area and the impact on the surrounding environment. Therefore, the structure of the intake buildings of urban rainwater pumping stations is often small and tight, and it is difficult to arrange them in accordance with the requirements of good hydraulic c...

AI Technical Summary

Problems solved by technology

However, for urban rainwater pumping stations with an overly compact structure, especially when the rainwater main pipe adopts an oblique inflow form, the water inlet system of the pumping station generally has the center of the mainstream in the gate well, the uneven distribution of water flow velocity in the inlet tank culvert, and the water collection tank. A series of hydraulic flow problems such as water inflow deviation

At this time, it is often difficult to ensure good water intake conditions and operational safety of urban rainwater pumping stations only by installing traditional rectification devices in the sump.

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