Safety on-line monitor for water circulation of boiler

Abstract

The invention relates to boiler water circulation safety on-line monitoring apparatus. Its features are that it includes high pressure valve a on boiler drum pipeline; appliance valve a is connected to differential pressure transmitter a; high pressure valve b on the boiler drum down collecting box is connected to the parallel appliance valve b, c; the b is connected to differential pressure transmitter a; the c is connected to pressure transmitter a; the high pressure valve c is connected to parallel appliance valve e, f; the e is connected to pressure transmitter b; the f is connected to differential pressure transmitter b; the high pressure valve a on boiler drum pipeline is connected to appliance valve g; the g is connected to differential pressure transmitter b; the differential pressure transmitter a, b, pressure transmitter a, b, are respectively electrically connected to pressure measuring resistance; thermocouple of the boiler drum is connected the temperature measuring resistance; the resistances are electrically connected to data collector and computer. The invention has the advantages of auto monitoring, and exact failure diagnosis.

Description

technical field [0001] The invention relates to the field of measurement, and is an online safety monitor for boiler water circulation. Background technique [0002] With the development of boilers with large capacity, ultra-high parameters or supercritical parameters, the working conditions of the process in the boiler pot are deteriorating day by day, and the failure rate is high. At present, most of the supervision work of the water cycle in our country is still in the stage of manual meter reading and manual data analysis. Due to discontinuous data collection and untimely analysis and control, it is impossible to accurately and timely reflect the boiler water circulation status, make trend predictions, and find stagnation, backflow, over-temperature, pulsation and other phenomena in boiler water-wall tubes, and even boiler water-wall Serious accidents such as tube burst and leakage occur, forcing the boiler to shut down and causing economic losses. Contents of the inv...

AI Technical Summary

Problems solved by technology

Due to discontinuous data collection and untimely analysis and control, it is impossible to accurately and timely reflect the boiler water circulation status, make trend predictions, and find stagnation, backflow, over-temperature, pulsation and other phenomena in boiler water-wall tubes, and even boiler water-wall Severe accidents such as pipe burst and leakage occur, forcing the boiler to shut down and causing economic losses

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