Probe guiding device for horizontal steam generator heat transfer pipe eddy current testing

The invention relates to a probe guiding device for horizontal steam generator heat transfer pipe eddy current testing. The device includes a rotating platform at the upper end, a double-stand columnguide rail, a lifting platform and a double-push pull apparatus. The lifting platform carries the double-push pull apparatus to do up-and-down motion along the double-stand column guide rail. The overall framework of the lifting platform is enclosed by plates, a lifting motor and ducts are fixed in the lifting platform, and the lifting motor is connected to a reduction gearbox. A probe guider is fixed at the bottom of the lifting platform. Eddy current probes are driven by the double-push pull apparatus to firstly pass through the ducts, then pass through the probe guider, and finally enter the heat transfer pipe for eddy current testing. One sides of fixation clamps are mounted on a base plate of the lifting platform, and the other sides are fixed to a hinge four-bar clamping mechanism. The cylinder body of an ai