Spiral flow shaft type energy dissipation drop well

Abstract

The invention relates to a spiral flow shaft type energy dissipation drop well, which comprises an inner shaft and an outer shaft, wherein a water inlet pipe is connected to the upper part of the outer shaft and a water outlet pipe is connected to the lower part of the outer shaft; an annular spiral flow space is surrounded by the inner shaft and the outer shaft; and a plurality of partition boards are distributed inside the annular spiral flow space from top to bottom in a spiral mode, so that a spiral flow drainage passage is formed. By virtue of the partition boards which are distributed in a spiral mode as well as the walls of the outer shaft and the inner shaft, the flow direction of water is changed so as to reduce the flow rate of the water, so that the purposes of energy dissipation and water dropping are achieved; problems, which are solved in plane, are solved in a vertical direction, so that the occupied area of project is reduced. The drop well provided by the invention is not limited by a drop difference and the diameter of the water inlet pipe; and the drop well is broad in application scope, and is applicable to rainwater and sewage pipeline network works in such construction industries as municipal administration, railway, petroleum, water conservancy and the like.

Description

technical field [0001] The invention belongs to the technical field of drainage engineering, and in particular relates to a swirl shaft type energy dissipation drop well, which is suitable for drainage engineering in municipal, railway, electric power, water conservancy and other industries. Background technique [0002] There are only three types of drop wells in the municipal, railway, electric power, water conservancy, construction and other industries: vertical pipe type, vertical trough type and stepped type. The energy of water serves the purpose of energy dissipation. According to the national standard diagram, it is suitable for situations where the diameter of the water inlet pipe is not greater than 200mm and the drop of the pipe is less than 6m; , to reduce the energy of water and achieve the purpose of energy dissipation. According to the national standard diagram, it is applicable to the situation where the diameter of the pipe is not greater than 400mm and the ...

AI Technical Summary

Problems solved by technology

In areas where the height difference between the upstream and downstream of the drainage pipe exceeds 6m, or where the diameter of the drainage pipe is greater than 200mm, 400mm, or 1500mm, there is no standard drawing for the existing drop wells, and the diameter and drop difference of the above three drop wells are restricted. , the scope of use is limited, and in some places it may be necessary to use multi-stage water drop, which not only increases the number of water drop wells, but also requires a large investment, occupies a large area, and also affects the appeara

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