REMOTE INSPECTION SYSTEM BY TRAVEL ON THE ANNULUS FOR TUBE BUNDLE AND TUBE SHEET OF STEAM GENERATOR

摘要

The present invention relates to a bundle of ring-shaped space driving type heat tubes for a steam generator and a remote tube sheet inspecting device. The present invention includes: a robot body; a magnetic wheel installed in the robot body to be rotatable, and attached to an inner wall of the steam generator by magnetic force to drive the robot body along the inner wall of the steam generator; a bracket member fixed and combined with the robot body; a first operating body installed in the bracket member to be rotatable in a first direction; a second operating body installed at an end of the first operating body to be rotatable in a direction vertical to the first direction; and a probe unit installed in the second operating body to be extendable to inspect an inner space part of the steam generator. Therefore, the present invention is capable of reducing the radiation exposure of workers.