Condition Monitoring System for Radial Bearings of Tubular Hydrogenerator Units

Abstract

The invention discloses a tubular turbine generator set radial bearing state monitoring system which comprises an oil film temperature sensor, an oil film pressure sensor, an oil film thickness sensor, an optical-electricity encoder, a slip ring, a system host and a remote computer. Along with set rotating, the optical-electricity encoder outputs pulse signals at the same angle, the signals carry out triggering on a collecting system, and bearing lubrication parameters can be collected in real time at the same angle. Data exchanging is carried out between the remote computer and the system host through Ethernet communication, the host carries out high-speed collecting under program control, after collecting, the data are uploaded to the remote compute through the Ethernet for displaying, storing and analyzing, once fault happens, alarming signals are given out timely, accordingly monitoring of the bulb type tubular turbine generator set radial bearing state is achieved, and operation safety of a tubular turbine generator set is guaranteed.

Description

Technical field: [0001] The invention relates to a monitoring system for the running state of the radial bearing of a bulb type tubular hydroelectric generating set. Background technique: [0002] my country has a vast territory and abundant low-head hydraulic resources. Bulb tubular hydroelectric generating units are suitable for low-head run-of-the-river power stations. They have the advantages of high efficiency, small unit size, light weight, and investment savings. They have been widely used at present. In the bulb-type tubular unit, the radial bearing bears the magnetic pull caused by the eccentricity of the air gap and the entire weight of the rotating part. Its working performance and operating state are directly related to the safe and reliable operation of the unit. Therefore, it is very important to monitor the running state of the radial bearing during the operation of the bulb-type tubular hydro-generator. [0003] At present, the main means of monitoring the o...

AI Technical Summary

Problems solved by technology

[0003] At present, the main means of monitoring the operation status of radial bearings is to monitor the temperature of the bearing pad. When the abnormal temperature of the bearing pad is detected, an alarm signal is given. However, when the temperature of the bearing pad rises too fast, the burning has already occurred. The temperature rise was caused by the tile accident, so this monitoring method can only prevent the accident from getting worse, but it cannot judge before the accident occurs.

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