METHOD FOR DIAGNOSTICS OF THE TECHNICAL CONDITIONS OF ROTARY EQUIPMENT Russian patent published in 2021 - IPC G01M15/12 

FIELD: diagnostics.

SUBSTANCE: invention relates to the field of technical diagnostics, particularly, to methods for diagnostics of the technical condition of electric drive equipment, and can be used to monitor vibrations of rotary equipment of nuclear power units. The substance of the invention consists in the fact that in the method for diagnostics of the technical condition of rotary equipment consisting in determining and assessing mechanical vibrations of the equipment it is proposed to preliminarily measure and record over the control period of time the value of the reference diagnostic signal of known serviceable equipment of the same type as the tested rotary equipment, and then measuring and recording over the control period of time the diagnostic signals during operation of the tested equipment, followed by breaking the produced records of the reference signal and the signal of the tested equipment into at least five sections with a duration of at least two seconds, converting each section of the recording of the reference and tested signals into a spectrum constituting a frequency distribution of amplitudes, sampling the amplitudes of the spectra of the diagnostic signals of the tested and operating equipment at the frequencies of development of deviations of the tested and reference signals, and then calculating the modules of the difference between the amplitudes of the spectra of the tested and operating equipment, ranging the modules of the difference and summarising the obtained ranks, comparing the sum of the obtained ranks with the critical value, and then making a conclusion about the rotary equipment exceeding the regulated vibration values and thus, about malfunction thereof, if the sum of the obtained ranks exceeds the critical value, or about serviceability of the equipment of the electric engine, if the sum of the obtained ranks is less than the critical value.

EFFECT: technical result achieved by the present invention is reduction of errors in measurement and analysis of diagnostic signals.

3 cl, 2 dwg