Nine-element square array ultrasonic sensor fixing device

The utility model relates to a nine-element square array ultrasonic sensor fixing device, which comprises an aluminum bas plate, wherein the bottom surface of the base plate is provided with magnets, the upper end face of the base plate is provided with nine cylindrical blind holes used for installing ultrasonic sensor array elements, and the nine cylindrical blind holes are distributed at the middle part of the base plate in a square array mode. The nine-element square array ultrasonic sensor fixing device has the advantages of convenient disassembly, simple operation, stable performance and the like, can also ensure the consistency and the integrality of contact between a receiving surface of each sensor array element and the outer wall of electrical equipment while fixing the spacing of the sensor array elements, and improves the detection precision.