Patent ID: 9715100
Date: 2017-07-25
CPC Classifications: F01D,F05D,G01N,G02B,H04N

Claim:
1. A blade inspection system for inspecting a plurality of blades periodically disposed on a periphery of a rotating shaft of a rotor of an engine and rotated on the rotating shaft, comprising: an endoscope having an insertion portion in which an observation optical system is provided; and a plurality of guide devices attached to external access ports different from each other of the engine in order to guide the insertion portion of the endoscope into the engine, wherein each of the guide devices has: a guide tube for guiding the insertion portion; and a first fixing portion which is provided on the guide tube and fixes the guide tube in the corresponding external access port; and a length of an extending portion of the guide device extending from the corresponding external access port is different among the plurality of guide devices so that, when the insertion portion is attached in the guide tube, a position for observing a predetermined portion of the blade by the observation optical system of the insertion portion comes to a position determined in advance for each of the corresponding external access ports.