Flow rectifying device for improving outlet water flow state of arc drainage box culvert

Abstract

The invention discloses a flow rectifying device for improving the outlet water flow state of an arc drainage box culvert and belongs to the technical field of municipal drainage. The flow rectifying device is arranged in the arc drainage box culvert. The inlet section and the outlet section of the arc drainage box culvert are straight sections, and the middle section of the arc drainage box culvert is an arc section. Flow guide piers are distributed at the tail end of the arc drainage box culvert. A first cross beam penetrates through the flow guide piers. The two ends of the first cross beam perpendicularly intersect with the two side walls of the box culvert. A second cross beam is arranged at the tail end of the straight outlet section of the arc drainage box culvert. The flow rectifying device can improve the outlet water flow state of the arc drainage box culvert, the problem of deviation of outlet flow of the arc drainage box culvert is solved, and thus, an outlet of the arc drainage box culvert can be effectively protected against deposition and blocking, and adverse effects on navigation of ships in an external river channel are avoided. The flow rectifying device for improving the outlet water flow state of the arc drainage box culvert is simple in structure, easy to process and manufacture and suitable for being applied and popularized in various municipal drainage system construction and transformation projects with arc drainage box culverts.

Description

technical field [0001] The invention belongs to the technical field of municipal drainage, and in particular relates to a rectifying device for improving the water flow state of an arc-shaped drainage box culvert. Background technique [0002] Drainage box culvert is an important infrastructure in the urban drainage engineering system. It is responsible for ensuring the orderly collection, transportation and treatment of urban rainwater and sewage. It plays an important role in maintaining the daily operation of the city and is the "vein" of urban people's life. With the continuous development and expansion of urban construction scale, the number of urban public drainage system facilities is increasing rapidly. However, in the planning and design stage of the urban drainage system, especially when it comes to drainage box culverts, due to the restriction of objective conditions such as unfavorable soil quality and construction environment, the designed drainage box culverts ...

AI Technical Summary

Problems solved by technology

Poor water flow pattern seriously affects the safety and stability of the drainage system operation, especially when the arc-shaped drainage box culvert is close to the discharge outlet, the bias flow at the outlet is likely to cause sedimentation and blockage in the low-velocity area, and the local high-speed water flow near the surface will also flow to the outside Adverse effects on the normal navigation of ships in the river

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