Whole aeration cyclone vertical shaft

Abstract

The invention discloses a whole aeration cyclone vertical shaft which comprises a volute chamber section (1), a contraction section (2) and a vertical shaft section (3). At least one aerator (4) which penetrates the whole vertical shaft section (3) is arranged on the vertical wall surface of the vertical shaft section (3) of the cyclone vertical shaft in an outward sudden expansion manner along the radius direction of the vertical shaft section (3), smooth curved surfaces of the aerators (4) are gradually contracted to a wall surface after the aerators (4) are suddenly expanded, and the wall surface is formed by the original radius side of the vertical shaft. The whole aeration cyclone vertical shaft has the advantages that the aerators can guarantee that aeration cavities can be formed as long as water flows rotate in a wall clinging manner, so that the water flows which flow through the wall surface of the integral vertical shaft are aeration water flows containing gas with high concentration, and damage to the wall surface of the vertical shaft due to cavitation and erosion is completely prevented; the whole aeration cyclone vertical shaft is simple in structure, easy to construct and high in running safety, and the shape of the whole aeration cyclone vertical shaft is smooth and continuous.

Description

technical field

[0001] The invention belongs to the technical field of aeration and corrosion reduction of swirl shafts in water conservancy projects, and in particular relates to a full-process aeration swirl shaft. Background technique

[0002] The swirl shaft is an ideal choice for flood discharge and energy dissipation. So far, the research on the swirl shaft flood discharge tunnel has been relatively in-depth. A general swirling shaft spillway is composed of several parts such as an inlet section, an upper flat section, a variable slope section, a vortex chamber section, a contraction section, a shaft section, a pressure slope section, and a lower flat section (such as figure 1 shown). Its main feature is to let the water flow adhere to the wall and vortex flow to cause head loss along the way to dissipate energy, and at the same time, it will not cause atomization after the outlet of the discharge channel and serious erosion damage downstream. However, with the use o...

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