| 摘要 |
The heat-exchanger tube(1) encloses a composite scanner(6) attached to a cable(8) for drawing the scanner through the tube at a selected speed. The system for inspecting the relatively long, thin-walled, small-bore tubes of a heat exchanger provided with support plates for holding the tubes in predetermined positions, comprises a composite scanner having a number of flexure springs contating the interior surface of a tube for detecting and profiling tube abnormalities as the scanner traverses the tube.
|
