DETECTING METHOD OF LEAKS ON BOILER TUBE IN COKE DRY TYPE FIRE EXTINGUISHER

摘要

PURPOSE:To detect leaks on boiler tubes early and accurately by monitoring and comparing the moisture content of cooling gase at the inlet with that at the outlet of a waste heat boiler. CONSTITUTION:An inlet moisture content meter 21 that measures the moisture content of cooling gas is installed at the inlet of a waste heat boiler 11 and an outlet moisture content meter 22 that measures the moisture content of cooling gas on a gas duct 13 at the outlet. A moisture content measuring device 23 is provided to calculate and indicate the measured moisture content values of the inlet and outlet moisture content meters 21 and 22. The moisture content measuring device 23 measures the moisture contents of the cooling gases in both the inlet and outlet of the waste heat boiler 11 at the same time. [DELTAM=Mo-Mi] is calculated, where Mi % represents the moisture content measured by the moisture content meter at the inlet of the waste heat boiler, and Mo % the moisture content measured by the moisture content meter at the outlet. When DELTAM becomes larger than zero, it is judged that leaks occur on the boiler tubes of the waste heat boiler.