According to Bernoulli theorem,kinetic energy and potential energy change due to the thermokinetic differences of steam and conden sation water,and action valve plate starts and stops to choke air and drain water.

• 圆盘式疏水阀是根据伯努力热动力原理，利用蒸汽和凝结水通过阀孔时流速和何种产生变化的不同热力学性质，驱动阀片开关阀门，从而达到阻汽排水。