Linear scan hot spot detection system

摘要

A hot spot detection system for a rotary regenerative preheater has a linear rail system positionable between the central portion and the casing of the air preheater. The rail assembly has a pair of rails with a carriage movably mounted to each rail. The drive assembly has a motor and sprocket drive mountable to the exterior of the casing for driving the chain to which each carriage is affixed, to move the carriages in a linear reciprocating motion. On each carriage is a sensor assembly for detecting hot spots on the rotor of the air preheater.