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On-line diagnosis method for air leakage fault of sintering machine based on spectral feature bilateral detection method

A bilateral detection and spectral feature technology, applied to the analysis of fluids, furnaces, lighting and heating equipment using sound waves/ultrasonic waves/infrasonic waves, can solve problems such as different mechanisms, complex structures, and prone to air leakage faults, and achieve computing resources and Low memory resource occupation, low computational complexity, and improved reliability

Active Publication Date: 2020-02-21
HUATIAN ENG & TECH CORP MCC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the sintering machine and its attached bellows, air pipes, valves, etc. have complex structures and work at high temperatures, it will cause frequent and frequent air leakage failures.
In other words, the sintering machine is prone to air leakage faults, but because the fault involves the airtightness of the structure, for large equipment, there are many fault points and fault causes with different mechanisms, so it is difficult to correct the air leakage of the sintering machine Comprehensive monitoring of faults

Method used

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  • On-line diagnosis method for air leakage fault of sintering machine based on spectral feature bilateral detection method
  • On-line diagnosis method for air leakage fault of sintering machine based on spectral feature bilateral detection method
  • On-line diagnosis method for air leakage fault of sintering machine based on spectral feature bilateral detection method

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Embodiment Construction

[0037] The present invention is based on the characteristics that the sound signal has a fast transmission speed and is not easy to be blocked. According to the long-term production experience, an important phenomenon of the air leakage fault of the sintering machine is the whistling sound caused by the wind passing through the narrow space. This air leakage produces The sound is generally sharp, and has a certain degree of distinction from the background sound of the factory. Therefore, according to the characteristic of the air leakage phenomenon of the sintering machine, the present invention adopts the method of analyzing the sound signal of the workshop to realize the comprehensive online detection and fault diagnosis of the air leakage fault of the sintering machine. .

[0038] Now take a typical domestic trolley-type sintering machine as an example to illustrate the present invention:

[0039] Detection of the present invention and hardware system see figure 1 . The s...

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Abstract

The invention discloses an online diagnosis method for air leakage faults of a sintering machine based on a frequency spectrum feature bilateral detection method. The method comprises the following steps of: establishing an offline diagnosis model for air leaking faults of the sintering machine based on the frequency feature; and performing fault diagnosis on acquired sound data of a sintering workshop on line based on the offline diagnosis model. The invention constructs a feature representing method for the air leakage faults of the sintering machine by utilizing frequency spectrum and strength characteristics of sound, and the feature representing method provides monitoring basis for the air leakage faults of the sintering machine; a strength threshold value on characteristic frequencyis calculated, criterion for the air leakage faults of the sintering machine can be defined for value calculating, and the criterion is basis for automatically detecting the air leakage faults of thesintering machine. Through a way of diagnosing the air leakage faults of the sintering machine by a decision-making mechanism, intelligent criterion is provided for diagnosing the air leakage faults of the sintering machine.

Description

Technical field: [0001] The invention relates to an online diagnosis method for an air leakage fault of a sintering machine based on a frequency spectrum feature bilateral detection method. Background technique: [0002] Iron ore sintering is an important link in the modern iron and steel metallurgical process. Its main production link is to ignite and burn evenly mixed small granular raw materials on a trolley-type sintering machine to fuse them into massive sinter. In order to ensure the strength and chemical composition of sinter agglomerates, the raw materials need to be fully burned on the sintering machine. The evenly mixed small granular raw materials are uniformly distributed in the form of a thick material layer on the sintering machine. In order to ensure the full combustion of the raw materials, the sintering machine installs a bellows under the raw material layer and connects with an exhaust fan. Through the negative pressure generated by the exhaust fan, the Fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/036F27B21/14
CPCF27B21/00
Inventor 方田叶学农凌云
Owner HUATIAN ENG & TECH CORP MCC
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