Ultrasonic partial discharge detector

The invention discloses an ultrasonic partial discharge detector, and the detector comprises a back cover, the inner side of which is provided with a storage battery for supplying power to the whole device; the substrate is erected in the back cover, a central processing unit and an analog-to-digital conversion module are arranged on the surface of the substrate, and an interface and a detection head are arranged on one side of the substrate; the top cover is arranged on the back cover in a covering mode, a display screen is embedded in the surface of the top cover, and the display screen is connected with the substrate through a wire; the technical key points are as follows: the handheld equipment is used for a long time, so that a larger-size handle is designed to increase the holding hand feeling; external sensor accessories such as an external ultrasonic probe, a wave concentrator and the like are designed, and a quick self-locking interface form is used, so that plugging is convenient, and falling can be