Boiler water wall deformation monitoring method, system and device based on strain measurement

The invention discloses a boiler water wall deformation monitoring method, system and device based on strain measurement. Strain measurement values of high-temperature strain gauges on the inner side and the outer side of a strip-shaped plate are collected according to a preset time interval; the actual deflection value of the specified monitoring point is calculated by using the strain measurement values of the two high-temperature strain gauges of the specified monitoring point, and the bending degree of the water-cooled wall plane is measured and detected through a mechanism that the water-cooled wall plane is bent after the water-cooled wall swells; in the prior art, due to the high-temperature characteristic of a water-cooled wall, online measurement of bumps cannot be realized, the severity of the bumps cannot be known before further evolution of faults, and methods and measures cannot be extracted and taken; the online measurement can be realized; the micro deformation of the water cooling wall cannot