Patent ID: 9618333
Date: 2017-04-11
CPC Classifications: F02C,F05D,F23R,G01B

Claim:
1. A clearance measurement device for a combustor for measuring the size of an annular clearance between a first cylindrical body and a second cylindrical body of a combustor in an overlapping portion of the first cylindrical body and the second cylindrical body, the combustor comprising: a combustion nozzle; the first cylindrical body which is provided surrounding the combustion nozzles; and the second cylindrical body which is connected with the first cylindrical body and guides combustion gas combusted by the combustion nozzle to a downstream side, wherein the clearance measurement device comprises: a rod part with at least the hollowed base end side and the leading end side inserted in the combustor, which is mounted on a first flange of the combustor for fixing the combustion nozzle; a support part which is mounted at the leading end of the rod part so as to be rotatable around a rotation axis perpendicular to the axial direction of the rod part; an imaging element which is supported by the support part and images the annular clearance; an operation lever which penetrates the inside of the hollow rod part on the base end side and extends toward the support part; and a link mechanism which is provided between the operation lever and the support part and converts a forward/backward motion of the operation lever into a rotary motion of the support part around the rotation axis.