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Engine bearing failure testing and diagnosing method and failure detecting instrument

A technology of fault testing and diagnosis method, applied in auxiliary equipment of power plant on aircraft and vehicles, in the field of aero-engine maintenance and detection, which can solve the problems of aircraft flight safety, delay of engine repair time, wrong judgment, etc., which affect the quality of engine maintenance. Achieve significant effect, accurate judgment and simple operation

Inactive Publication Date: 2006-04-12
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Description
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Problems solved by technology

Practice has proved that even experienced professionals have hearing errors among each other, so it is easy to cause misjudgment, or delay the repair time of the engine, or affect the quality of engine maintenance and the safety of aircraft flight

Method used

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  • Engine bearing failure testing and diagnosing method and failure detecting instrument
  • Engine bearing failure testing and diagnosing method and failure detecting instrument
  • Engine bearing failure testing and diagnosing method and failure detecting instrument

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Embodiment Construction

[0028] The content of the present invention will be further elaborated below in conjunction with the accompanying drawings of the description. The content of the present invention actually includes three parts, namely (1) a testing and diagnosing method for an aeroengine bearing fault; (2) an engine bearing fault detector and (3) a computer processing program for engine testing and diagnosis. When we describe the specific embodiment of the present invention, we will focus on (1) the structure of the engine bearing fault detector and (2) the actual operation process of using the detector to test and diagnose the engine bearing fault. In fact, the test and diagnosis method for bearing faults of the present invention will naturally be clearly understood through the description of the operation process.

[0029] The three parts provided by the present invention constitute a complete aeroengine bearing testing and diagnosing system, which is composed of hardware and software. The ...

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Abstract

This invention puts forward a method for testing and diagnosing faults of generator bearings characterizing in collecting the vibration spectrum of a bearing and comparing it with its original vibration spectrum to diagnose the fault of the bearing. This invention also designs and manufactures a related test device characterizing in composed of a vibration signal amplifier, a vector filter, a multiple switch and an A / D converter, a spectrum analysis and microprocessor process system and the computer software for testing faults.

Description

technical field [0001] The invention belongs to the technical field of aero-engine maintenance and testing, and also relates to the technical field of auxiliary equipment for power devices on aircraft and vehicles. In particular, it relates to a fault testing and diagnosing system for aeroengine bearings. Background technique [0002] Aeroengines must be overhauled periodically. Before the engine is overhauled and leaves the factory, the operator must listen carefully to the sound of the bearing when it is rotating to determine whether the bearing between the shafts and the bearing between the rotors is faulty. Since the sensitivity and resolution of human hearing are limited, and there are individual differences, this method of judging bearing faults by the hearing of professionals is only based on the work experience of professionals, and its human factors are obviously very large. Practice has proved that even experienced professionals have hearing errors among each oth...

Claims

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Application Information

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IPC IPC(8): G01M13/04G01M15/00
Inventor 于文怀隋雪冰可成河李树会隋明君李瑞民
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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