QN-XL Boiler Tube Leakage Mornitoring System is a hi-tech product, which is an integration of many aspects, such as Boiler technology, Acoustics, Electronics, Computer Science and Mechanics, and so on. Its working principle is as follows. First the enhanced sound sensors collect the sound signal of the boiler tube leak. Next a variety of noise disturbance occurring during the boiler operation is eliminated. Finally the boiler tube leak is predicted through an analysis of acoustic frequency spectrum produced by Fast Fourier Transform (FFT) program in the computer. Moreover, the location and intensity of leak can be estimated. In this way, the operator can take some measures immediately to prevent the accident from worsening, reduce the time and cost spent on the repair.
The device is composed of three parts: - Signal-collecting , monitoring system and Ash handling syetem