Safety detecting method for flue gas waste heat recovery power system of industrial furnace

Abstract

The invention discloses a safety detecting method for a flue gas waste heat recovery power system of an industrial furnace. Furnace pipe leakage is detected by adopting information fusion and double parameters of furnace inside sound and furnace wall vibration; two measuring signals are mutually supplemented and mutually tested; and after two kinds of information are fused by a BP (Back Propagation) neural network, a leakage alarm is given. In the method, a fin between furnace pipes of all heated surfaces of the industrial furnace are perforate; sound wave guide pipes are communicated with the inner side of the furnace after penetrating through the opening on the fin and fixed between the furnace pipes and at a header; a reinforcing type sound wave sensor is installed at the other end of the sound wave guide pipe for receiving a noise signal transmitted into the furnace by the sound wave guide pipe; the sensor is used for acquiring and receiving all field sound data in the furnace, transmitting a current signal to an embedded type data acquiring and processing system at a long distance and transmitting the processed data to a host machine of a monitoring system by a network; and the wall of the industrial furnace is provided with a piezoelectric crystal vibrating sensor for detecting a vibrating signal of the furnace wall and giving a leakage alarm after fusing the two kinds of information.

Description

technical field [0001] The invention relates to the computer monitoring technology of the acoustic emission monitoring technology. The invention belongs to the technical field of safety detection of industrial furnace systems, and specifically relates to a detection method applicable to the safety of all industrial furnace flue gas waste heat recovery power systems. Background technique [0002] It is difficult for industrial furnaces to prevent tube explosion and leakage during operation, and their maintenance cycle is not synchronized with that of metallurgical furnaces. Although the horizontal water-cooled ram and the raised heating surface structure bring convenience to maintenance, due to The current measurement system cannot detect early leaks and leak locations in time, which brings great difficulties to industrial furnace maintenance. [0003] Industrial furnaces work in extremely harsh environments. The medium in the pipe is high-temperature and high-pressure fluid...

AI Technical Summary

Problems solved by technology

At home and abroad, this technology has been used to study the leakage monitoring of power plant boilers, but the monitoring of industrial furnaces has not been reported.

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