Patent ID: 8743379
Filing Date: 2014-06-03
Classification: F22B,G01B

Abstract:
1. A device for monitoring a thickness reduction of an inner surface in a heat transfer tube or an inner surface in an evaporation tube comprising: a movement unit adapted to move along the inner surface in the heat transfer tube or the inner surface in the evaporation tube; a laser measurement unit provided in the movement unit for measuring the thickness reduction of the inner surface in the heat transfer tube or the inner surface in the evaporation tube by a laser; a cable including a light guiding path for introducing a laser into the laser measurement unit and a light deriving path for transmitting reflected light; and a thickness reduction determining unit for comparing data of the laser measurement unit with past data or standard data so as to determine the current thickness reduction, wherein the laser measurement unit includes: the laser measurement unit is configured to guide the laser emitted from the laser displacement sensor, emit the laser in a direction perpendicular to the inner surface, move a reflection surface of the laser by 360° in a peripheral wall surface and continuously read a position of the reflection surface through the laser displacement sensor, so as to measure the thickness reduction.