某典型电站通气洞风速模拟计算

Wind Speed Simulation of Ventilation Tunnel in a Power Station

典型电站的通气洞主要与电站尾水闸门的开闸排水工艺有关,当电站机组运行尾水闸打开时,大量的尾水会涌入尾水调压室,导致调压室内的空气通过通气洞被极速排出。为了准确得到尾水进入调压室后,通气洞内的空气流动状态,以及其与通风兼安全洞连接处的压力波动情况,本文根据设计工况下调压室内的实际水流量进行理论分析计算,并以该分析结果为依据,对尾水闸打开时主厂房通风的情况进行了准确分析。

The ventilation hole of a power station is mainly related to the opening and drainage process of the tailgate of the power station.When the tailgate of the power station unit is opened,a large amount of tailwater will flow into the tailwater surge chamber,causing the air in the surge chamber to be passed through the vent hole Quick discharge.In order to accurately obtain the air flow state in the ventilation hole after the tailwater enters the pressure regulating chamber,and the pressure fluctuations at the connection with the ventilation and safety tunnel,this paper performs theoretical analysis and calculation based on the actual water flow in the pressure regulating chamber under the design conditions.Based on the analysis results,the ventilation of the main factory building when the tailgate is opened is accurately analyzed.