Vibration curve normalized average life prediction method of equipment components

A vibration curve and average life technology, applied in the field of equipment life prediction, can solve problems such as inability to make accurate predictions, and inability to obtain estimates of how long it will continue to be used.

Active Publication Date: 2016-03-30
CHANGXING SHENGYANG TECH CO LTD
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  • Abstract
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Problems solved by technology

[0003] However, the existing technology cannot make accurate predictions for occasions where the environment changes frequently
Moreover, once a failure is not detected, it is impossible to obtain an estimate of how long it can continue to be used

Method used

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  • Vibration curve normalized average life prediction method of equipment components
  • Vibration curve normalized average life prediction method of equipment components
  • Vibration curve normalized average life prediction method of equipment components

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Experimental program
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Embodiment Construction

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation of the present invention will be described in detail below by analyzing and comparing the bearings of two field devices of the same type including bearings.

[0035] Such as figure 1 figure 2 As shown, at first, according to the method of the present invention, two bearing parts are processed, and the processing includes the following steps:

[0036] Step 1: Detect the vibration signal of the equipment parts, record the time information of the detection, and perform analog-to-digital conversion on the actual vibration signal to obtain a digital signal sequence;

[0037] Step 2: Extract the characteristic parameter P from the digital signal sequence; in the present embodiment, after the vibration signal is subjected to analog-to-digital conversion, fast Fourier transform is performed to find the first-order rotational speed frequency in the frequency spe...

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Abstract

The invention aims to provide a vibration curve normalized average life prediction method of equipment components. The load is normalized, the loading force is comprehensively considered, the use state and the predicted use time of the equipment components are accurately analyzed based on the ambient temperature and humidity, and lubrication. In order to achieve the aim, a rotary machinery system fault diagnosis method based on an adaptive noise reduction algorithm is provided and includes acquiring a trend curve and calculating the average curve of a component, comparing the trend curve with the average curve of the component, and determining the accurate component service life information based on the distance D between the trend curve and the average curve of the component on a specific time point. Therefore, the root cause of the component fault is obtain through analysis according to the influence factors of the work state and the environmental parameters to the vibration curve.

Description

technical field [0001] The invention relates to a method for predicting the life of equipment, in particular to a method for predicting the normalized average life of vibration curves of equipment parts. Background technique [0002] In the maintenance and monitoring of mechanical equipment, vibration signal analysis is used in many cases, but because the working status and environment of the field equipment are very different, it is difficult to apply the signal and diagnosis experience collected in the actual single site to other field equipment, so There is not much help for service life prediction of homologous approximation equipment components. For example, in the prior art, the patent for invention with the application number of 201310429075.7 "Diagnostic Method for Transmission System Gear Fault Based on Vibration Signal Analysis" involves a transmission system gear fault diagnosis method based on vibration signal analysis. The steps are: 1) the original vibration si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01H17/00
CPCG01H17/00G01M13/00
Inventor 杨军
Owner CHANGXING SHENGYANG TECH CO LTD
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