某抽水蓄能电站通风洞洞口风机房设计分析
Design analysis of fan room at entrance of a ventilation tunnel of a pumped storage power station
摘要：
某抽水蓄能电站地下厂房的进、排风口均位于通风兼安全洞的洞口,当通风量较大时,仅满足规范“排风口应高出进风口,并不宜小于6 m”的最低要求的设计方案并不一定能避免进、排风气流短路。研究表明:在洞口风机房的设计中,当采用侧排风方式时,排风口的出风角度对进风空气质量影响较大,应尽量避免采用斜向下出风的风口;与侧排风方式相比,顶排风方式在防止进、排风气流干扰方面具有十分显著的优势。
Abstract：
The air inlet and air outlet of the underground building of a pumped storage power station are located at the entrance of the ventilation and safety hole. When the ventilation volume is large, the design scheme that only meets the minimum requirements of the specification “the air outlet should be higher than the air inlet and should not be less than 6 m” cannot necessarily avoid the short circuit of the inlet and exhaust air flow. The study shows that in the design of fan room at the entrance of ventilation hole, when the side exhaust mode is used, the air outlet angle of the exhaust air has a great influence on the air quality of the inlet air flow, so the outlet with the form of inclined downward air should be avoided as far as possible. Compared with the side exhaust mode, the top exhaust mode has significant advantages in preventing the interference of inlet and exhaust air flow.
Keywords:pumped storage power station; ventilation tunnel; fan room; air inlet; air outlet; side exhaust; top exhaust