以琅琊山水电站为例,对发电机层顶拱送风方式进行了热态相似模型试验,采用相似理论与热量阿基米德相似准则数,构建试验模型相似比例尺,探讨了同一风量下不同风口个数、送风温度、送风方式及排风方式对发电机层工作区速度场与温度场的影响程度。结果表明,在空调送风、机械排风时发电机层工作区气流组织均匀,风速满足要求,能有效消除工作区热负荷。 Taking Langya Hydropower Station as an example, a hot model test was carried out for the roof arch ventilation mode of the generator. The similar principle of similar theory and calorimetric Archimedes was used to construct a similar scale for the experimental model. The effects of different tuyeres The number of air supply temperature, air supply mode and exhaust mode on the working area of ​​the generator layer speed field and temperature field. The results show that the air flow in the working area of ​​the generator layer is uniform and the wind speed meets the requirements when the air conditioner blows and the mechanical exhaust blows, which can effectively eliminate the heat load in the working area.