Dispersed ventilated aerator
An air-entrained sill and ventilated technology, applied in the field of aerated sill, can solve the problems of increasing the cost of drainage corridors
Active Publication Date: 2010-08-04
POWERCHINA ZHONGNAN ENG
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Problems solved by technology
Undoubtedly, the drainage corridor brings about the increase of cost
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[0018] Such as Figure 4 ~ Figure 7 As shown, the dispersed ventilation pipes are arranged in the guide wall of the drainage structure and the aeration sill, and are located on the upstream side of the aeration sill, and are evenly arranged. One end of each ventilation pipe is connected to the top of the guide wall, and the other end is connected to the downstream elevation of the aeration sill, and is evenly distributed laterally along the aeration sill. The slope of the dispersed ventilation pipeline can be horizontal, or inclined to a gentle slope downstream. The downstream elevation of the aeration sill is connected with the bottom plate of the drainage structure.
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The invention relates to an aerator, in particular to a dispersed ventilated aerator used for high-velocity flow aerification. The aerator is internally provided with a plurality of independent dispersed venting pipelines, one end of each of the dispersed venting pipelines is communicated with the top of a guide wall, while the other end is communicated with a downstream facade of the aerator. Theaerator is particularly suitable for the high-velocity flow aerification of an outlet structure on a slight bottom slope.
Description
technical field [0001] The invention relates to an aeration sill, in particular to a disperse ventilation type aeration sill for high-speed water flow aeration. The invention is especially suitable for aeration of high-speed water flow in drainage structures with small bottom slopes. Background technique [0002] Under the action of high-speed water flow, cavitation is prone to occur on the concrete surface of the drainage structure. The development of cavitation will cause the separation of the boundary of the water flow and form a bad flow state, which may eventually cause fatal damage to the drainage structure. Cavitation damage occurs occasionally on drainage structures. [0003] At present, aeration facilities are often installed on high-speed water discharge structures, and the air is entrained into the water body by the dragging effect of the water flow on the aeration facilities. Water aeration can effectively reduce cavitation damage. The basic shapes of aeration...
Claims
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IPC IPC(8): E02B8/06
Inventor 戴晓兵李延农
Owner POWERCHINA ZHONGNAN ENG