The invention discloses an ultrasonic flaw
detector, which relates to the technical field of
nondestructive testing equipment, and solves the technical problem that the separation setting of a
coupling agent
bottle and a detection instrument is not convenient for detection by detection personnel. The ultrasonic flaw
detector is technically characterized by comprising a detection host, a
transmission line connected onto the detection host and a probe detachably connected onto the
tail end of the
transmission line, wherein the side wall of the shell of the probe is provided with a placement seat; the placement seat is internally provided with an
accommodation cavity; the top of the placement seat is provided with a threaded through hole communicated with the
accommodation cavity; a
solvent bottle loaded with the
coupling agent is in threaded connection to the threaded through hole; the cavity side wall, located at one side of the
accommodation cavity, of the placement seat is provided with a sliding groove; the sliding groove is internally provided with a shielding
assembly for sealing the accommodation cavity in a horizontal sliding mode; the cavity side wall, located at the other side of the accommodation cavity, of the placement seat is provided with a driving
assembly for controlling the shielding
assembly to slide along the sliding groove; and the bottom part of the accommodation cavity is provided with a liquid outlet channel communicated with the bottom surface of the placement seat. The ultrasonic flaw
detector has the
advantage of facilitating flaw detection by the detection personnel.