Double-inlet convective energy-dissipating drop well with high drop and small pipe diameter

Abstract

The invention discloses a double-inlet convection type energy-dissipating drop well under the working condition of high drop and small pipe diameter, which comprises an inflow section, the inflow section is connected downwards with several sections of drop sections, and the drop section at the bottom is connected with an outlet section. The inflow section, the inflow section is cylindrical, and the outer cylinder wall of the inflow section is provided with two oppositely arranged inflow ports, and the center of the inflow section is provided with an overflow column arranged coaxially with the inflow section, and the bottom of the outer wall of the overflow column There is an annular cylinder bottom between the inner wall of the inflow section, and the upper plane of the cylinder bottom is level with the bottom of the inner circle of the inflow port. A diversion weir is provided on the outer wall of the overflow column facing the inflow port. The upper middle part of the overflow column A plurality of annular overflow outlets arranged on the outer wall of the overflow column are provided. The invention has the advantages of being applicable to a high drop environment of more than 15m, having good energy dissipation effect, effectively ensuring the safety of the downflow outlet, convenient installation and long service life.

Description

technical field [0001] The invention relates to an energy-dissipating well, in particular to a double-inlet convective energy-dissipating drop well under the working condition of high drop and small pipe diameter. Background technique [0002] In the stage of water flow pipelines such as drainage, water supply or flood discharge with large drop, the huge potential energy contained in the drop of water flow will bring unimaginable impact to the water outlet, especially in the construction of water conservancy and hydropower projects in alpine and valley areas, only the hydraulic power of the water outlet It is difficult to eliminate this part of energy due to restrictions, and the structure of energy-dissipating water drop wells came into being. The current water drop wells are mostly used in urban drainage pipeline projects, and standard drawings are generally used. The drop well, the drop well with a pipe diameter of 700-1650mm adopts a stepped drop well with a maximum drop...

AI Technical Summary

Problems solved by technology

[0002] In the stage of water flow pipelines such as drainage, water supply or flood discharge with large drop, the huge potential energy contained in the drop of water flow will bring unimaginable impact to the water outlet, especially in the construction of water conservancy and hydropower projects in alpine and valley areas, only the hydraulic power of the water outlet It is difficult to eliminate this part of energy due to restrictions, and the structure of energy-dissipating water drop wells came into being. The current water drop wells are mostly used in urban drainage pipeline projects, and standard drawings are generally used. The drop well, the drop well with a pipe diameter of 700-1650mm adopts a stepped drop well with a maximum drop of 2m, and the inner length of a stepped drop well with a drop of 2m can reach 4m, and the total length of a commercial drop well generally does not exceed 10m. When applied to alpine and canyon areas, it is necessary to appropriately increase the order and drop. When the drop exceeds 15m, it is difficult to offset the water potential energy brought by the high drop by simply increasing the order and drop. However, the alpine and canyon areas need to deal with 15m. Above or even above 20m working conditions, the current drop well is obviously difficult to meet this working condition

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