Three-dimensional full section side diffusion aerator

Abstract

The invention discloses a three-dimensional full section side diffusion aerator. The three-dimensional full section side diffusion aerator comprises a bottom plate and two side walls, wherein the side walls are perpendicular to the bottom plate and located on the left side and the right side of the bottom plate, thus a flow passing channel is formed between the two side walls, each side wall is divided into two parts including a side wall body I and a side wall body II in the water flow direction, the distance between the start ends of the two side wall bodies II is larger than the distance between the side wall bodies I on the two sides, and the distance between the tail ends of the two side wall bodies II is equal to the distance between the side wall bodies I on the two sides; and the flow passing channel between the two side wall bodies II on the two sides forms a side diffusion section, an aeration pier arranged in the water flow direction is arranged on the bottom plate of the flow passing channel corresponding to the side diffusion section, the lower surface of the aeration pier is connected with the bottom plate correspondingly, the upstream section of the aeration pier is in an arc shape, the width of the upstream section of the aeration pier is gradually increased in the water flow direction, the width of the downstream section of the aeration pier is a fixed value, the downstream section of the aeration pier has a certain length in the water flow direction, and smooth connection transition of the upstream section and the downstream section of the aeration pier is achieved. The three-dimensional full section side diffusion aerator can realize flow passing wall full section aeration on the premise of not changing the flow Froude number.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to a three-dimensional full-section side diffusion aeration sill. Background technique [0002] With the vigorous development of water conservancy and hydropower, more and more high dams and reservoirs are being built or are being planned. Due to the continuous increase of the water head, the flow velocity of the flood discharge has also increased sharply, and the problem of flood discharge energy dissipation has become increasingly prominent. [0003] As the flow velocity increases, the pressure on the flow wall gradually decreases. When the pressure at a certain point inside the water body is lower than the saturated vapor pressure of water, cavitation bubbles will be generated, and the cavitation bubbles will gradually migrate to places with relatively high pressure. And collapse at a certain moment, when the collapse position of ...

AI Technical Summary

Problems solved by technology

After the wedge-shaped middle pier is set in the patent, the width of the flow channel is narrowed, so that the water depth in the flow channel will increase, but the flow velocity will basically not change, resulting in a decrease in the Froude number of the water flow, which is more unfavorable for the aeration of the water flow

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