An analysis method for the correlation between engine vibration and casing components

Abstract

The invention belongs to the technical field of an engine, and relates to an analysis method for correlation between engine vibration and casing components, which comprises the following steps of: determining an analysis target according to an engine test vibration fault mode during a overhaul period; determining an influence factor according to a design drawing of the casing component and the assembly relation of the casing component; establishing an engine vibration fault data table during the overhaul period according to the influence factors; collecting accumulated data according to a datatable, analyzing the correlation between the analysis target and influence factors one by one, and screening key influence factors according to a correlation analysis result; drawing a fitting line graph of the analysis target and the key influence factor; acquiring a key influence factor control value according to the fitting line graph; solidifying the key influence factor control value obtained by screening, and controlling the casing components according to the solidified key influence factor control value during the engine renovating period. According to the analysis method for correlation between engine vibration and casing components, the fault prevention concept is integrated into the aircraft engine refurbishment, so that the engine refurbishment cost is effectively reduced, andthe assembly quality is improved.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to an analysis method for the correlation between engine vibration and casing-like components. Background technique [0002] For aero-engines during the refurbishment period, during the test run, there will be a fault that the vibration value of the fulcrum exceeds the limit after the heating state. Once this fault occurs, the engine can only be returned to the assembly workshop for disassembly and inspection. When troubleshooting, engineers and technicians can only rely on personal Experience and engineering practice judge the surface state of casing components to formulate a troubleshooting plan, so the troubleshooting plan has many human factors, is not targeted, has a certain degree of blindness, and cannot accurately describe the renovation period Intrinsic relationship between vibration failure of aero-engine and dimensions of casing components. Contents of the i...

AI Technical Summary

Problems solved by technology

[0002] For aero-engines during the refurbishment period, during the test run, there will be a fault that the vibration value of the fulcrum exceeds the limit after the heating state. Once this fault occurs, the engine can only be returned to the assembly workshop for disassembly and inspection. When troubleshooting, engineers and technicians can only rely on personal Experience and engineering practice judge the surface state of casing components to formulate a troubleshooting plan, so the troubleshooting plan has many human factors, is not targeted, has a certain degree of blindness, and cannot accurately describe the renovation period Intrinsic Relationship Between Vibration Faults of Aeroengines and Sizes of Case Components

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