Energy dissipation rib type flood discharging device

Abstract

The invention relates to the technical field of floodways and particularly relates to an energy dissipation rib type flood discharging device comprising a floodway body, wherein the floodway body comprises a straight-section flow channel and a bent-section flow channel; at least two energy dissipation ribs are spaced and fixedly formed at the bottom of the bent-section flow channel along the directions of the flow channels, and two ends of the energy dissipation ribs are respectively fixed together with walls at two sides of the bent-section flow channel; the energy dissipation ribs adopt concrete energy dissipation ribs; and the floodway body is of a reinforced concrete structure. The energy dissipation rib type flood discharging device is reasonable and compact in structure and convenient to use; and the energy dissipation ribs spaced and fixedly formed at the bottom of the bent-section flow channel can be used for disturbing a water flow, disordering the water flow, reducing the flow rate, reducing the potential energy of the water flow, eliminating stone in the bent-section flow channel and large ice blocks in a channel in winter, reducing the scouring force of the water flow to the wall, slope and bottom of the bent-section flow channel and the impact of the stone and the large ice blocks to the wall of the bent-section flow channel, protecting the bent-section flow channel of the floodway body from being damaged, guaranteeing the safe and stable operation of a hydraulic power plant and avoiding channel collapse accidents.

Description

technical field [0001] The invention relates to the technical field of spillways, and relates to an energy-dissipating rib-type flood discharge device. Background technique [0002] The hydropower plant mainly relies on the hydraulic potential energy to drive the water turbine to rotate, and the water turbine drives the generator to rotate and cut the magnetic force line to generate electricity; however, when the hydropower plant suddenly loses pressure due to other external reasons, a large amount of flow cannot be discharged normally and needs to be discharged through the spillway ; For high-head hydropower stations, due to the influence of the terrain, the flow of the spillway is large, the drop is high, and the draft is deep; the water flow will accumulate a lot of potential energy during flood discharge; when the spillway has a certain curvature, the water flow with a large amount of potential energy will accumulate It will have an impact on the wall, slope or bottom of...

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Problems solved by technology

[0002] The hydropower plant mainly relies on the hydraulic potential energy to drive the water turbine to rotate, and the water turbine drives the generator to rotate and cut the magnetic force line, thereby generating electric energy; but when the hydropower plant suddenly loses pressure due to other external reasons, a large amount of flow cannot be discharged normally and needs to be discharged through the spillway ; For high-head hydropower stations, due to the influence of terrain, the flow of the spillway is large, the drop is high, and the draft is deep; the water flow will accumulate a lot of potential energy during flood discharge; when the spillway has a certain curvature, the water flow with a large amount of potential energy will accumulate It will have an impact on the wall, slope or bottom of the spillway at the bend; not only that, the stones in the water flow and the large ice blocks in the channel in winter will continue to hit the wall of the spillway with the impact of the water flow, and the impact on the water The power plant forebay dam or mountain poses a serious threat, and there is a risk of canal collapse

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