| 摘要 |
PURPOSE:To simplify a device with which leak of a thin tube is detected through inserting a probe into the thin tube by enabling inspection of the thin tube having U-shaped bending part through inserting the probe from one direction of the thin tube even on a part position sleeve-repaired, quickly charging or discharging water serving as a propagating medium of a flaw detecting element, and further removing motors for the probe and a reel part, water injecting hose, and the like. CONSTITUTION:This defect detecting device is provided with a probe 1 having a flaw detecting element 2, a cable 3 extended from the probe, and a reel part 4 for winding up the cable so as to energize it on the winding up side. The probe 1 is provided on its extreme end with a pressure receiving cap part 6 to partially blockade the thin tube in which the probe is inserted while forming an air discharging passage 5 on its one part. The pressure receiving cap part is formed into a shade-like shape opened on the probe base end side, and provided with a skirt part 8 made of elastic material of which the outer circumferential edge part is in liquidtight contact with the inner face of the tube, and the probe can be self-runningly moved in the thin tube by charging or discharging water from the cable side to the thin tube in which the probe is inserted. |
