STEAM-PIPE TEMPERATURE MEASUREMENT DEVICE, STEAM-PIPE TEMPERATURE MEASUREMENT METHOD

摘要

A steam-pipe temperature measurement device according to the present invention includes: an optical fiber for measuring the temperature of the surface of a steam pipe inside which steam obtained through heat exchange between water to be supplied to a boiler and a combustion gas circulates; a first cover that is mounted so as to surround the steam pipe, with the optical fiber sandwiched between the first cover and the steam pipe, such that the optical fiber is brought into close contact with the steam pipe along the longitudinal direction of the steam pipe, at a first position where the temperature of the surface of the steam pipe is measured; a heat pipe for cooling the optical fiber; and a second cover that is mounted so as to surround the steam pipe, with the optical fiber and the heat pipe sandwiched between the second cover and the steam pipe, such that, at a second position adjacent to the first position, the optical fiber is adjacent to the steam pipe along the longitudinal direction of the steam pipe, and the heat pipe surrounds the optical fiber along the longitudinal direction of the steam pipe.