Automatic calibration device for steam generator heat transfer tube eddy current inspection probe and installation method of automatic calibration device

The invention belongs to the technical field of in-service nuclear power plant inspection, and particularly relates to an automatic calibration device for a steam generator heat transfer tube eddy current inspection probe and an installation method of the automatic calibration device. The automatic calibration device comprises an automatic calibration device body, a fixed locking block, locking screws and a calibration tube; a semicircular groove A is formed in one end of the automatic calibration device body; the fixed locking block is disposed on the semicircular groove A through the lockingscrews; a cylindrical through hole is formed in the other end of the automatic calibration device body in the width direction of the device body; and the calibration tube penetrates through the cylindrical through hole. By adopting the automatic calibration device, the technical problem that a nuclear power station steam generator heat transfer tube must be manually calibrated during eddy currentinspection is solved. 本发明