Vibration protection method and device for equipment

By obtaining the real-time speed signal of the large drive end rotary machinery, bandpass filtering and resampling, the problem of the existing technology inability to effectively monitor and protect the vibration of the large drive end rotary machinery is solved, and more accurate vibration protection and the effect of reducing the risk of malfunction is achieved.

CN119664448AActive Publication Date: 2025-03-21SUPCON TECH CO LTD
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Patent Information

Application Number
CN202411890767.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-21
Estimated Expiration
2044-12-20

AI Technical Summary

Technical Problem

Large drive end rotary machinery generates a large amount of vibration during high-speed operation, affecting the life of the equipment and may cause interference to the surrounding environment. The existing vibration monitoring methods are only applicable to general rotary machinery, and there is a lack of effective vibration protection methods for large drive end rotary machinery.

Method used

By obtaining the real-time rotation speed signal of the target device, the bandwidth of the bandpass filter is determined, and the vibration signal is filtered using this bandwidth to obtain the fundamental frequency signal. Then, the filtered signal is resampled to improve the spectrum resolution, and finally the device is vibratingly protected based on the frequency domain processing results.

Benefits of technology

It realizes accurate vibration protection for large-scale drive rotating machinery, reduces the risk of false alarms and misoperation, and ensures the safe and stable operation of the equipment.

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Abstract

The invention discloses a vibration protection method of equipment, and aims to realize vibration protection on target equipment, obtain a first signal, determine a real-time rotating speed of the target equipment through the first signal, determine a filtering bandwidth based on the real-time rotating speed and a quality factor of a filter, and perform filtering processing on a second signal by using the filtering bandwidth. And obtaining a filtered signal, namely a third signal. Through the filtering mode, the fundamental frequency component can be kept as far as possible on the premise that the frequency multiplication component is filtered out. Further, the third signal is resampled to obtain a fourth signal, and the spectral resolution corresponding to the fourth signal is higher than the spectral resolution corresponding to the third signal. Through a resampling mode, it is ensured that fundamental frequency energy leaks as little as possible, so that the fundamental frequency vibration value of the fourth signal after frequency domain processing is reserved to the maximum extent, and the risks of false alarm and false operation can be reduced when vibration protection is carried out according to the fundamental frequency vibration value.
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