Distributed optical fiber corrosion detecting device for wet devulcanizing chimney

Abstract

The invention relates to a distributed optical fiber corrosion detecting device for a wet devulcanizing chimney. The distributed optical fiber corrosion detecting device comprises optical fibers; the optical fibers are arranged between the inner wall of the chimney and an anticorrosive material; one end of each optical fiber is connected with a host; the host is connected with an upper computer by virtue of a communication line. Compared with the prior art, the optical fibers are used as detectors to directly measure the temperatures of all parts of the optical fibers, the corroded parts are detected indirectly since the temperature of a certain section of optical fiber cannot be normally measured, and the defect of breakdown of a traditional corrosion measuring system after a power supply cable or a signal cable is corroded is avoided. Besides, by the aid of a mature optical fiber temperature measuring technology, the distance measuring precision is high, and the construction is simple, convenient and feasible.

Description

technical field [0001] The invention relates to a distributed optical fiber corrosion detection device for desulfurization wet chimneys. Background technique [0002] After the chimneys of thermal power plants and chemical plants undergo wet desulfurization, the flue gas contains SO3, hydrogen fluoride, chloride and other substances. When the flue gas condenses on the inner wall of the chimney, a large amount of highly corrosive acid will be produced. The acid will not only corrode the concrete on the inner wall of the chimney, but also corrode the steel bars inside the chimney, which will seriously endanger the safe operation of the chimney. At present, domestic anticorrosion research on chimneys mainly focuses on what kind of anticorrosion materials are used to stick to the inner wall of the chimney to prevent the acid from corroding the inner wall of the chimney. Corrosion occurred. To realize the detection of corrosion points in the chimney, the conventional idea is to...

AI Technical Summary

Problems solved by technology

However, every part of the inner wall of the chimney may be corroded. Once the cable between the detector and the controller is corroded, the entire system will lose its detection function.

Images