Method for receiving sequence of images of shovels of e.g. gas turbine for defects detection purposes, involves storing images of machine parts for generating image sequence that is synchronized with rotational motion of machine parts

摘要

The method involves fixing an endoscope (12) within a thermal fluid-flow machine, and displacing the fluid-flow machine during rotation. An electronic camera (16) is triggered for receiving images of rotary machine parts i.e. shovels (28, 30, 32), when a signal of an optical sensor (14) reaches or exceeds a trigger threshold level such as minimum trigger level. The images are stored for generating an image sequence that is synchronized with a rotational motion of the rotary machine parts. A spatial position of the endoscope is adjusted based on a still image captured with the camera. The electronic camera is designed as a red-green-blue (RGB) camera or a charge-coupled device (CCD) camera. Independent claims are also included for the following: (1) a device for receiving a sequence of images of rotary machine parts of a thermal fluid-flow machine (2) an article for re-tooling a head of an endoscope for receiving a sequence of images of rotary machine parts of a thermal fluid-flow machine.