Dynamic monitoring system for operating condition of thrust bearing of hydro-generator

Abstract

The invention discloses a dynamic monitoring system for an operating condition of a thrust bearing of a hydro-generator. The system comprises a temperature sensor, a pressure sensor, an oil film thickness sensor, a host machine and a remote computer, wherein the sensor is arranged on a mirror plate of the thrust bearing for outputting lubricating parameter data such as oil film thickness, oil film pressure, oil film temperature and the like with the rotation of the mirror plate; and the data can be used for reflecting the operating condition of the thrust bearing. Data is exchanged between the remote computer and the system host machine by using wi-fi wireless communication; the host machine is used for carrying out high-speed acquisition under the control of programs; the acquired data is uploaded to the computer by the wi-fi network for displaying, storing and analyzing in the remote computer; if the thickness of the oil film of a thrust pad is excessively small or the temperature increase is excessively quick, alarm prompting is carried out to avoid a pad burning accident, thereby ensuring the safe operation of the thrust bearing of the hydro-generator. The data can be used for optimizing the design of the thrust bearing of the hydro-generator, and can be used as the original data of the expert thrust bearing analysis system.

Description

technical field [0001] The invention relates to a dynamic monitoring system for the running state of the thrust bearing of a hydroelectric generator. Background technique [0002] The thrust bearing is called the "heart" of the hydro-generator. It bears the weight of the rotor of the generator set and the axial water thrust. Its working performance and operating state are directly related to the safe and reliable operation of the unit. With the continuous increase of the capacity of hydro-generator units, the requirements for the reliability of large-scale unit operation are also getting higher and higher, and the requirements for safe and reliable operation of thrust bearings are also getting higher and higher. Therefore, during the operation of hydro-generators, monitoring The running state of the thrust bearing is very important. [0003] At present, the method of monitoring the operating state of the thrust bearing of the hydro-generator set is to install a temperature ...

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Problems solved by technology

[0003] At present, the method of monitoring the operating state of the thrust bearing of the hydro-generator set is to install a temperature sensor on the thrust pad to determine whether the thrust bearing is in good condition by monitoring the temperature of the thrust pad. However, this method has disadvantages. First, this method It can only indirectly reflect the state of the oil film of the thrust bearing; second, there is a hysteresis phenomenon in temperature monitoring. When an abnormal temperature is found, the bearing may have been damaged, and it is impossible to give an early warning

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