中小型卧式水轮发电机组在停机过程中,当转速下降到额定转速的35%时,通常需加5～7公斤/平方厘米压缩空气进行加闸制动,使机组缩短低速转动时间,避免轴承磨损和烧瓦。为此,每个电站必须设 When the speed drops to 35% of the rated speed during the shutdown process, the small and medium-sized horizontal hydro-generating set usually needs to add 5 ~ 7 kg / cm 2 compressed air to brake the brake to shorten the time of the low speed rotation and avoid Bearing wear and bushings. For this purpose, each station must be installed