水电站的低压气主要用于调相、制动、蝶阀围带、吹扫、风动工具等。小水电站多数是无调相和其他用气要求,所以常常是根据机组制动用气量来选择低压风的设备容量。由于以往计算制动用气量的计算公式与实际使用条件不符,计算结果偏大,因此按它进行选择的设备,常常造成积压和浪费。本文通过实 Low-pressure gas hydropower station is mainly used for phase modulation, braking, butterfly shroud, purge, pneumatic tools. Most of the small hydropower stations are free from phasing and other gas requirements. Therefore, the capacity of the low-pressure wind equipment is often selected according to the amount of brake air used by the unit. As the previous calculation of brake gas consumption formula is inconsistent with the actual conditions of use, the calculation results are too large, so the equipment chosen by it, often resulting in backlog and waste. This article by real