High-precision boiler liquid level detector

The invention relates to the technical field of high-temperature and high-pressure boiler liquid level detection, in particular to a high-precision boiler liquid level detector which comprises a detector. The detector is erected on a boiler, a supporting frame plate is arranged on the detector, and the supporting frame plate is arranged at the top of a water storage cavity of the boiler. A first-level water level detector and a second-level water level detector are arranged on the supporting frame plate, a mounting base is erected in the first-level water level detector, a steering roller shaft is arranged on the mounting base, a steering frame is erected outside the steering roller shaft, a lower edge rod piece is arranged at the bottom end of the steering frame, and a first floating ballis mounted at the bottom end of the lower edge rod piece. An infrared detector is arranged at the top of the second-level water level detector, a folding connecting frame is installed at the bottom end of the top frame, a lo