TEMPERATURE MEASUREMENT DEVICE OF ROTOR, ROTOR, TURBINE, AND TEMPERATURE MEASUREMENT METHOD OF ROTOR

摘要

PROBLEM TO BE SOLVED: To measure the temperature during a rotation of a rotor, by certainly inserting and installing a temperature sensor at a prescribed position in a shaft hole of the rotor and certainly pressure-welding a detection portion of the temperature sensor to the inner surface of the shaft hole.SOLUTION: A temperature measurement device includes: a cylindrical member 20 inserted and installed in a shaft hole 1a of a rotor 1; a flange portion 30 installed in the cylindrical member 20; and a temperature sensor 40 in which a wire extends from the inside of the cylindrical member 20 to an outer periphery 31 of the flange portion 30 and a tip of the wire has a detection portion 41 projecting in the out-of-periphery direction from the outer periphery 31 of the flange portion 30. A maximum outer diameter d of the flange portion 30 is set smaller than an inner diameter D of the shaft hole 1a, and the center of gravity Gin the inserted and installed state in the shaft hole 1a is decentered to the disposing side of the detection portion 41 with respect to a rotation center Oof the rotor 1.SELECTED DRAWING: Figure 1