Ultrasonic detection system and method and bearing structure

The invention relates to an ultrasonic detection system and method and a bearing structure. The ultrasonic detection system comprises an energy supply and data acquisition module, an energy supply and data transmission line and a plurality of flexible ultrasonic sensors, the plurality of flexible ultrasonic sensors are attached to different surfaces of the bearing structure, and the energy supply and data acquisition module and the flexible ultrasonic sensors are connected through the energy supply and data transmission line. The ultrasonic detection method comprises the following steps: acquiring an echo signal of the flexible ultrasonic sensor; and obtaining fault information of the bearing according to the echo signal. The bearing structure comprises a bearing and an ultrasonic detection system, and the flexible ultrasonic sensors comprise a first flexible ultrasonic sensor located on the surface of an outer ring of the bearing and a second flexible ultrasonic sensor located on the side face of the bearing