Generator set bearing fault detection device and detection method

Abstract

The invention relates to the technical field of motor equipment, and particularly relates to a generator set bearing fault detection device and a detection method. The generator set bearing fault detection device comprises a detection terminal, a controller, an oil quality analyzer and a detection mechanism, wherein the oil quality analyzer is used for detecting the oil quality component in a bearing sealing cavity. In comparisons with the existing vibration signal or temperature signal measurement method, when physical parameters such as the temperature, the viscosity and the oil quality component are measured, the detected signal quantity is little, the measurement is simpler and more convenient, signal processing is simpler, the measurement is more accurate, and bearing fault detection accuracy is higher; besides, the operation condition of the bearing is judged comprehensively through measuring multiple physical signals, the bearing fault judgment result is more accurate; and, whether fault happens to the bearing is judged through judging the content of metal elements in the oil quality in jacking oil in the generator, influences from external interference factors are fewer, and judgment on the bearing fault is more accurate.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a bearing fault detection device and method for a generator set. Background technique [0002] At present, my country's electric power industry has entered the development stage of large units, large power grids, high voltage and automation. From the perspective of power production, power grid operation, economical management, and power supply quality, the larger the power grid, the larger the unit capacity of the main unit should be. If the unit capacity increases, the unit capacity cost will decrease, the material consumption will decrease, and the efficiency will increase. , and its economic performance will be better. It can be seen that the development of large generators occupies a very important position in the power industry. Therefore, it is of great significance to ensure the normal operation of large generators. [0003] Bearings are an important part of large genera...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: traditionally, when judging whether the bearing of a large generator fails, it is judged by measuring the vibration signal or temperature signal of the bearing, but the measurement of the vibration signal of the bearing is relatively complicated, and the signal quantity is relatively large. Large and cumbersome processing, resulting in low accuracy of bearing fault detection; at the same time, the existing technology only judges the fault status of the bearing by measuring the temperature or vibration signal, and cannot effectively monitor the operating status of the bearing. judgment, and the above-mentioned measurement method is poor in intelligence, and cannot realize intelligent real-time detection and alarm

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