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Short platform preventing water flow oblique injecting of outlet of pressurized flood discharging radial gate
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.
本发明提供了一种防止有压泄洪弧形闸门出口水流斜射的短平台，属于水利水电工程领域，包括平台、支撑结构和底空腔；平台前端连接弧形闸门底端出水口的止水平台，支撑结构位于平台底部；底空腔设置在平台底部，底空腔前端左右两侧连通有通气孔。本发明提供的短平台，使得通过弧形闸门向下斜射的水流落在平台上，避免水流长期因斜射大角度冲击底板，造成底板冲刷破坏；并且由于弧形闸门局开时斜射水流只经过很短的距离，就跌落在平台上，其对平台造成的冲击力远远小于直接冲击在底板上。水流从平台上水平射出，大大增加了底空腔长度，提高了底掺气效果；避免了因底空腔较短，水流掺气不充分而造成的空蚀破坏。
Short platform preventing water flow oblique injecting of outlet of pressurized flood discharging radial gate
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.
本发明提供了一种防止有压泄洪弧形闸门出口水流斜射的短平台，属于水利水电工程领域，包括平台、支撑结构和底空腔；平台前端连接弧形闸门底端出水口的止水平台，支撑结构位于平台底部；底空腔设置在平台底部，底空腔前端左右两侧连通有通气孔。本发明提供的短平台，使得通过弧形闸门向下斜射的水流落在平台上，避免水流长期因斜射大角度冲击底板，造成底板冲刷破坏；并且由于弧形闸门局开时斜射水流只经过很短的距离，就跌落在平台上，其对平台造成的冲击力远远小于直接冲击在底板上。水流从平台上水平射出，大大增加了底空腔长度，提高了底掺气效果；避免了因底空腔较短，水流掺气不充分而造成的空蚀破坏。
Short platform preventing water flow oblique injecting of outlet of pressurized flood discharging radial gate
一种防止有压泄洪弧形闸门出口水流斜射的短平台
DENG JUN (author) / ZHANG FAXING (author) / TIAN ZHONG (author) / WEI WANGRU (author) / WANG YAMENG (author) / GONG JING (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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