Short platform preventing water flow oblique injecting of outlet of pressurized flood discharging radial gate

Abstract

The invention provides a short platform preventing water flow oblique injecting of an outlet of a pressurized flood discharging radial gate and belongs to the field of water resources and hydropower engineering. The short platform comprises a platform, a supporting structure and a bottom cavity. The front end of the platform is connected with a water stop platform of a water outlet in the bottom end of the radial gate, and the supporting structure is located at the bottom of the platform. The bottom cavity is formed in the bottom of the platform, and the left side and the right side of the front end of the bottom cavity communicate with ventilation holes. By means of the short platform, water flow downwards and obliquely injected through the radial gate falls on the platform, and the phenomenon that the water flow impacts a bottom plate with a large oblique injecting angle for a long time, and the bottom plate is scoured and damage is avoided; in addition, due to the fact that the oblique injecting water flow falls on the platform only through a very short distance when the radial gate is locally opened, and the impact force of the oblique injecting water flow on the platform is far smaller than the impact force of the oblique injecting water flow directly impacting the bottom plate. The water flow is horizontally injected out from the platform, the length of the bottom cavityis greatly increased, and the bottom gas seepage effect is improved; and the phenomenon that the bottom cavity is short, water flow gas seepage is insufficient, and cavitation erosion damage is causedis avoided.

Description

technical field [0001] The invention relates to a short platform at the exit of an arc gate, in particular to a short platform for preventing the outlet water flow of a pressurized flood discharge arc gate from slanting downward, and belongs to the field of water conservancy and hydropower engineering. Background technique [0002] In water conservancy and hydropower projects, when designing the outlet of arc gates of buildings with pressurized water release, such as figure 1 The structure is used to seal water. However, during the working process of the gate, it is inevitable that the gate will be partially opened. When the gate is partially opened, this structure will make the water flow obliquely shoot out at a downward angle under the influence of the arc gate, such as figure 2 , 7 and 8. It shortens the length of the bottom cavity; in severe cases, there may be water flow blocking the vent hole, which will affect the aeration effect of the aeration sill, and even a...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, the object of the present invention is to provide a short platform for preventing oblique jetting of water flow at the outlet of a pressurized flood discharge arc gate. Destruction, while increasing the length of the bottom cavity, strengthening the ventilation and aeration effect

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