Belt conveyor carrier roller bearing fault acoustic monitoring method
A belt conveyor and fault technology, applied in the field of fault acoustic monitoring, can solve the problems of high cost, inability to effectively locate the fault sound source, and consume human resources, so as to reduce operating costs and overcome the limitations of multi-factor interference Effect
Inactive Publication Date: 2021-02-12
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
However, in the actual on-site engineering environment, the belt conveyor is located in the closed plank road, and the characteristics of the closed space introduce new problems to the sound field analysis: the noisy environment introduces transmission path coupling interference, making the traditional generalized cross-correlation analysis inaccurate Obtaining the time delay estimation result, the location of the fault sound source cannot be effectively located
The disadvantage of manual inspection is that it consumes human resources and has potential safety hazards. The inspection robot has high requirements on the terrain or needs to build long-distance guide rails, which is very costly
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[0031] figure 1 It is a flowchart of an acoustic monitoring method for a belt conveyor idler bearing failure of the present invention, figure 2 It is a schematic diagram of the sensor arrangement structure of the present invention, as shown in the figure, a method for acoustic monitoring of belt conveyor idler bearing faults, the specific steps are as follows,
[0032] Step S1: Fix the first acoustic sensor 1 and the second acoustic sensor 2 at both ends of the belt conveyor, and connect the first acoustic sensor 1 and the second acoustic sensor 2 to the analysis computer 4 through the data acquisition device 3 .
[0033] Step S2: Set the data sampling and data analysis period, and determine the data analysis period according to the actual situation (ie, the importance of the equipment and the analysis cost).
[0034] Step S3: Set the trigger threshold by analyzing the computer. The specific steps of setting the trigger threshold are to set the abnormal feature vector accord...
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The invention discloses a belt conveyor carrier roller bearing fault acoustic monitoring method. The method comprises the following specific steps: fixing a first acoustic sensor and a second acousticsensor at the two ends of a belt conveyor, and connecting the first acoustic sensor and the second acoustic sensor with an analysis computer through a data acquisition device; setting data sampling and data analysis periods; setting a trigger threshold value through an analysis computer, using a data acquisition device to synchronously acquire signals of a first acoustic sensor and a second acoustic sensor and transmits the signals to the analysis computer, using the analysis computer to perform fault judgment on the data, and triggering data analysis, wherein improved Kurtogram analysis is adopted for data analysis; and calculating a fault position through the analysis structure in the step 3. According to the belt conveyor carrier roller bearing fault acoustic monitoring method adoptingthe structure, real-time dynamic detection of the carrier roller bearing is realized, and the position of a fault sound source is effectively captured.
Description
technical field [0001] The invention relates to a fault acoustic monitoring method, in particular to a fault acoustic monitoring method for idler roller bearings of a belt conveyor. Background technique [0002] In recent years, guided by national policies and production needs of enterprises, the fully enclosed operation of coal yards and coal-fired transportation systems has become an important part of the current power plant combustion and transportation transformation. After the coal-fired conveying system is completely closed, new problems will be introduced. The dust concentration in the closed space is high, which is not conducive to the long-term operation of the inspection personnel in the plank corridor. At the same time, the high temperature in summer poses a major occupational health risk for the operators. Therefore, from the comprehensive consideration of environmental protection, reasonable allocation of human resources, and reduction of production risks, the f...
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CPCG01M13/045
Inventor 张雄万书亭何玉灵王晓龙豆龙江张明
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)