Method and device for quick treatment of boiler fan vibration failure

Abstract

The present invention provides a method and a device for rapidly handling a boiler fan vibration fault. The method comprises a step of obtaining the vibration signal and a key phase signal at the vibration test point of a tested fan, a step of judging whether the tested fan has a vibration fault according to the vibration signal and the key phase signal, a step of finding the counterweight response coefficient matched with the key phase signal in a dynamic balancing historical database, and a step of obtaining the weight and counterweight position of a counterweight block needed in eliminating dynamic unbalance according to the counterweight response coefficient and the key phase signal. According to the method and the device, the effective reduction of a vibration value to a set qualified range can be achieved only through one start and stop, thus the start and stop times in the process of handling the fan vibration fault are reduced greatly, and the unit load limit operation time is effectively shortened.

Description

technical field [0001] The invention relates to a vibration monitoring technology of a boiler fan in a thermal power generation system, in particular to a method and a device for quickly handling vibration failures of a boiler fan. Background technique [0002] In a thermal power generation system, the boiler fan is an important component of the boiler air-smoke system. Faults on fan bearings and rotating parts occur, first manifested in parameter changes in bearing vibration. That is, by monitoring the vibration signal of the bearing position and detecting the change of vibration parameters, the status of the fan system can be monitored, the performance of the system can be predicted, and the failure of the system can be determined. With the deepening of equipment management, many users have installed fan vibration monitoring systems. Professional technicians can monitor and store the fan vibration in real time, and use the professional analysis function provided by the f...

AI Technical Summary

Problems solved by technology

[0003] However, the boiler fan monitoring system usually only installs vibration sensors, and only uses a uniform time interval to collect fan vibration data. The analysis of vibration signals is limited to the comparison and analysis of time-domain waveforms, which can determine the development trend of vibration and time of change

If accurate diagnosis and troubleshooting are required, the key phase signal must be connected to obtain the vibration phase information of the monitored fan. The current method is to stop and install a key phase sensor, and it is necessary to start and stop the fan several times to complete the dynamic balance test

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