Fault diagnosis method of blast furnace top gearbox through comprehensive analysis

Abstract

The invention discloses a method for carrying out fault diagnosis on a blast furnace top gearbox through a comprehensive analysis, which adopts an acoustic emission signal analysis, a wireless temperature measurement analysis, and an oil analysis to diagnose faults of the blast furnace top gearbox. The method comprises first installing an acoustic emission sensor and designing a wireless temperature measurement system which is applied to the blast furnace top gearbox; carrying out real-time collection of acoustic emission signals and wireless temperature signals, and carrying out treatments of morphological filtering, wavelet de-noising, and Hilbert demodulating sequentially on the collected acoustic emission signals; carrying out a trend analysis on the wireless temperature signals; carrying out a detection of conventional physical and chemical indicators on an oil sample through a regular oil detection, and carrying out a qualitative analysis and a quantitative analysis on compositions and contents of metal wear particles in the oil sample by adopting a spectrum analysis and a ferrographic analysis; making a fault diagnosis report by comparing and synthesizing the three types of analysis results. The method of the invention can improve accuracy the rate of fault diagnosis effectively, which is convenient for discovering hidden faults and prevents occurrence of major accidents.

Description

technical field [0001] The invention relates to a fault diagnosis method for a blast furnace top gear box, in particular to a method for comprehensively using acoustic emission signal analysis, wireless temperature measurement analysis and oil analysis for 2000m 3 Fault diagnosis method of bellless top gear box of blast furnace. Background technique [0002] As a large-scale low-speed and heavy-duty equipment, the blast furnace top gearbox is the key equipment for blast furnace material distribution. The main characteristics of this type of equipment are low operating speed, heavy load and discontinuous operation. Due to low-speed operation, complex and changeable load, long-term operation of the equipment, coupled with the harsh production environment and poor lubrication, the equipment is prone to failure. Once a sudden failure occurs, it will directly affect the normal operation of the blast furnace and even the entire production line, and even cause casualties in sever...

AI Technical Summary

Problems solved by technology

However, compared with the real-time collection and analysis of acoustic emission signals and the internal temperature of the gearbox, the method of regularly extracting oil for analysis has limitations in timely detection of equipment failures

Images