Early warning monitoring and protection system for bearing bush burnout of bulb tubular unit

Abstract

This application discloses an early warning, monitoring and protection system for bearing shell burnout of a bulb tubular unit. The bulb tubular unit includes a bulb head with a large shaft inside, and a bearing group is set on the large shaft. The bulb tubular unit also includes a bearing group Connected oil supply system, early warning monitoring and protection system for bulb tubular unit bearing bush burnout includes local control unit electrically connected with bulb tubular unit and bearing oil supply oil level monitoring and protection for detecting oil level value in the oil supply system Subsystem, bearing oil supply The oil level monitoring and protection subsystem includes an automatic oil level detection unit electrically connected with the local control unit. In this application, the oil level automatic detection unit in the bearing oil supply oil level monitoring and protection subsystem can monitor the oil level of the lubricating oil inside the high-level oil tank and the low-level oil tank in real time, and take remedial measures when the oil level is too low. Oil level height, in order to prevent the occurrence of accidents caused by the interruption of oil supply to the bearing, which will cause the bearing bush of the bulb tubular unit to burn out.

Description

【Technical field】 [0001] The application relates to the technical field of bulb tubular hydro-generators, in particular, to an early warning monitoring and protection system for the burning of a bulb tubular unit bearing bush. 【Background technique】 [0002] At present, the bulb tubular hydro-generator unit is widely used in low-head hydropower plants in my country due to its large unit overflow and high unit efficiency, but its auxiliary equipment is more complicated than other types of units. This type of generator unit operates in my country. The time is relatively short, and so far, there are no national standards and industry standards for its automatic control design, operation and maintenance, which leads to a high frequency of failures of this type of units in my country's hydropower industry, especially due to the The monitoring and protection method of bearing bush components is not appropriate, resulting in frequent bearing bush burning accidents. Once a bearing bus...

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Problems solved by technology

[0002] At present, the bulb tubular hydroelectric generator set is widely used in low-head hydropower plants in my country due to its large unit flow and high unit efficiency. However, its auxiliary equipment is more complicated than other types of units. This type of generator set is in operation in my country The time is relatively short, so far, there are no national standards and industry standards for its automatic control design, operation and maintenance, resulting in a high frequency of failures of this type of unit in my country's hydropower industry, especially due to the Improper monitoring and protection methods for bearing pad components lead to frequent bearing pad burnout accidents. Once a bearing pad burnout accident occurs, the repair time of the unit will take a lot of time, causing huge economic losses to power generation companies. Bearing pad burnout accidents have become bulbs. Major accidents in hydroelectric power plants

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