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Rotational flow vertical shaft flood discharge structure capable of achieving circumferential aeration
The invention discloses a rotational flow vertical shaft flood discharge structure capable of achieving circumferential aeration. The rotational flow vertical shaft flood discharge structure is provided with a volute chamber and a water cushion chamber. A contraction section is formed at the bottom of the volute chamber and communicates with the water cushion chamber through a vertical shaft straight section, a slope pressing section is arranged on one side of the communicating portion of the vertical shaft straight section and the water cushion chamber, the outer side of the slope pressing section communicates with a flood discharging tunnel body, and the top end of the flood discharging tunnel body is connected with a ventilation vertical shaft. A preset part of the vertical shaft straight section annularly expands outwards to form an annular aerator; supporting columns are distributed in the annular aerator, and the top end of the annular aerator communicates with the ventilation vertical shaft through a ventilation pipe. Water flow flowing through the vortex chamber and the contraction section of the rotational flow vertical shaft is changed into aerated water under the aeration action of the annular aerator, so that aeration protection on the wall surface of the middle lower part of the vertical shaft is realized, and cavitation erosion and cavitation of the wall surface of the rotational flow vertical shaft are effectively avoided.
本发明公开一种环向掺气的旋流竖井泄洪结构，设有涡室和水垫室；涡室的底部形成有收缩段，收缩段通过竖井直段连通水垫室，竖井直段和水垫室的连通部位一侧设有压坡段，压坡段的外侧连通有泄洪洞本体，泄洪洞本体的顶端连接有通气竖井；竖井直段的预设部位环向向外扩展形成环向掺气坎；环向掺气坎的内部分布有支撑柱，环向掺气坎的顶端通过通气管导通通气竖井。本发明流经旋流竖井涡室和收缩段的水流在环向掺气坎的掺气作用下，水流将变成掺气水体，从而实现对于竖井中下部壁面的掺气保护，有效避免旋流竖井壁面的空蚀空化。
Rotational flow vertical shaft flood discharge structure capable of achieving circumferential aeration
The invention discloses a rotational flow vertical shaft flood discharge structure capable of achieving circumferential aeration. The rotational flow vertical shaft flood discharge structure is provided with a volute chamber and a water cushion chamber. A contraction section is formed at the bottom of the volute chamber and communicates with the water cushion chamber through a vertical shaft straight section, a slope pressing section is arranged on one side of the communicating portion of the vertical shaft straight section and the water cushion chamber, the outer side of the slope pressing section communicates with a flood discharging tunnel body, and the top end of the flood discharging tunnel body is connected with a ventilation vertical shaft. A preset part of the vertical shaft straight section annularly expands outwards to form an annular aerator; supporting columns are distributed in the annular aerator, and the top end of the annular aerator communicates with the ventilation vertical shaft through a ventilation pipe. Water flow flowing through the vortex chamber and the contraction section of the rotational flow vertical shaft is changed into aerated water under the aeration action of the annular aerator, so that aeration protection on the wall surface of the middle lower part of the vertical shaft is realized, and cavitation erosion and cavitation of the wall surface of the rotational flow vertical shaft are effectively avoided.
本发明公开一种环向掺气的旋流竖井泄洪结构，设有涡室和水垫室；涡室的底部形成有收缩段，收缩段通过竖井直段连通水垫室，竖井直段和水垫室的连通部位一侧设有压坡段，压坡段的外侧连通有泄洪洞本体，泄洪洞本体的顶端连接有通气竖井；竖井直段的预设部位环向向外扩展形成环向掺气坎；环向掺气坎的内部分布有支撑柱，环向掺气坎的顶端通过通气管导通通气竖井。本发明流经旋流竖井涡室和收缩段的水流在环向掺气坎的掺气作用下，水流将变成掺气水体，从而实现对于竖井中下部壁面的掺气保护，有效避免旋流竖井壁面的空蚀空化。
Rotational flow vertical shaft flood discharge structure capable of achieving circumferential aeration
一种环向掺气的旋流竖井泄洪结构
FAN TIANYI (author) / HUANG LUE (author) / SHIN HAENG-JI (author) / JIANG HENG (author) / HUANG BING (author) / GAO BI (author)
2023-03-07
Patent
Electronic Resource
Chinese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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