超声法本质上说是一种流量测量方法,并且可以与压力—时间法或流速仪法相比。有点类似于这两种方法,超声法直接测量机组效率(水轮机和发电机一起)。从这个观点来看,超声法不同于直接测量水轮机效率(或者更确切地说是水轮机水力损失)的热力试验法。 Ultrasound is essentially a flow measurement method, and can be compared with the pressure-time method or the flow meter method. Slightly similar to these two methods, the ultrasonic method directly measures the unit efficiency (turbine and generator together). From this point of view, the ultrasonic method is different from the thermodynamic test method that directly measures the turbine efficiency (or, more precisely, the turbine hydraulic loss).