Combined alarming method for on-line monitoring system for rotary machinery

Abstract

The invention discloses a combined alarming method for an on-line monitoring system for rotary machinery. The method includes the following steps: selecting multiple parameters from vibration parameters and rate of change parameters of the vibration parameters, making the multiple parameters serve as monitored objects, and successively setting multiple alarming parameter combinations; reading basic monitor data in a database, and obtaining monitor values of the corresponding vibration parameters and the rates of change of the vibration parameters; successively reading the alarming parameter combinations from an alarming rule list, comparing the monitor values with corresponding trigger threshold values, triggering the alarming parameter combinations if all the monitor values exceed the trigger threshold values, and calculating the alarming level and the continuous trigger frequency of the alarming parameter combinations; and giving an acousto-optic alarm if the continuous trigger frequency of one alarming parameter combination is greater than a continuous alarming threshold value. Through adoption of the method, the alarming accuracy and the alarming efficiency are improved, false alarming is minimized, people can know the danger level, and then on-site workers can conveniently cope with the danger in time.

Description

technical field [0001] The invention belongs to the technical field of on-line vibration monitoring of mechanical equipment, and more specifically relates to a combined alarm method for an on-line monitoring system of rotating machinery. Background technique [0002] Rotating machinery is widely used in various industries. It is constantly developing towards large-scale and complex. Once the rotating machinery fails, it will cause huge losses and even major safety accidents. Therefore, it is very important to carry out online vibration monitoring . In the online vibration monitoring system, monitoring and alarming is one of the most important functions. It can remind the monitoring personnel of possible faults in time according to the change of monitoring data, so as to carry out fault detection and maintenance. [0003] For the realization of the alarm function in the online vibration monitoring system, there are many solutions, such as threshold alarm, grading alarm and s...

AI Technical Summary

Problems solved by technology

However, most of these alarm methods have a single alarm type, often false alarms or repeated alarms, low alarm efficiency, and take up a lot of working time for monitoring personnel; It cannot be considered that there is a fault in the equipment, and a combination of multiple monitoring indicators is required for judgment. Therefore, it is necessary to design a combined alarm method suitable for rotating machinery

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