Three-dimensional full-cross-section aeration step

A full-section, aerated sill technology, applied in water conservancy projects, marine engineering, coastline protection and other directions, can solve problems such as increasing project cost and increasing project construction difficulty, and achieve the effect of reducing construction difficulty and saving project cost.

Inactive Publication Date: 2018-08-24
YANGLING VOCATIONAL & TECHN COLLEGE
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Problems solved by technology

This not only increases the difficulty of engineering construction, but also increases the cost of the project.

Method used

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  • Three-dimensional full-cross-section aeration step
  • Three-dimensional full-cross-section aeration step
  • Three-dimensional full-cross-section aeration step

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Embodiment Construction

[0022] The technical solution of the present invention is further defined below in conjunction with specific embodiments:

[0023] The invention provides a three-dimensional full-section aeration sill (see figure 2 ), including a side wall 1 and a bottom plate 5, the bottom plate 5 is provided with an aerated bottom sill 4, and the thickness of the aerated bottom sill 4 increases gradually along the water flow direction;

[0024] A wedge-shaped middle pier 2 is arranged vertically in the middle of the above-mentioned aerated sill 4. The longitudinal height of the wedge-shaped middle pier 2 gradually increases with the direction of water flow, and its transverse width gradually widens with the direction of water flow, so that the originally continuous water body is divided into left-right and symmetrical sections. Due to the existence of the piers in the wedge-shaped body, a natural cavity will be formed between the water flows on both sides, and it will naturally communicate ...

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Abstract

The invention provides a three-dimensional full-cross-section aeration step, and aims at solving the problem of cavitation and cavitation erosion of high-speed water stream. The three-dimensional full-cross-section aeration step is capable of extremely reducing the difficulty in construction, and greatly saving the construction cost and can be used in a small bottom slope condition. According to the technical scheme, the three-dimensional full-cross-section aeration step comprises a side wall and a bottom plate, wherein a bottom aeration step is arranged on the bottom plate, and a wedge-shapedintermediate pier is vertically arranged in the middle part of the bottom aeration step; the starting position of the intermediate wedge-shaped pier is overlapped with a starting point of the bottomaeration step, and the vertical height and the transverse width of the wedge-shaped intermediate pier are zero; the thickness of the bottom aeration step in the water stream flowing direction gradually increases; the longitudinal height of the bottom aeration step gradually increases in the water stream flowing direction, and the transverse wide gradually increases in the water stream flowing direction; and the upstream face of the bottom aeration step is an arc-shaped upstream face.

Description

1. Technical field: [0001] The invention relates to the field of flood discharge and energy dissipation in water conservancy and hydropower projects, in particular to a three-dimensional full-section aeration sill. 2. Background technology: [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 p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/06
CPCE02B8/06
Inventor 夏鹏飞霍倩倩
Owner YANGLING VOCATIONAL & TECHN COLLEGE
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