Large generator rotor bearing lubricating oil filtering method

Abstract

The invention discloses a large generator rotor bearing lubricating oil filtering method which is mainly used for decontaminating lubricating oil of a rotor bearing of a large generator. According tothe method, an upper oil tank 1, a lower oil tank 2 and an oil filtering device 4 are mainly included. The oil filtering method comprises the steps that bearing lubricating oil falls into the lower oil tank from the upper oil tank 1 through an oil discharge pipe 3, then the bearing lubricating oil with pollutants in the lower oil tank is pumped into the upper oil tank 1 through an oil pump 5, anda cycle is formed; the bearing lubricating oil with the pollutants passes through the oil filtering device 4 every time, and the oil filtering device 4 filters out large-particle and small-particle pollutants; when powdery iron powder pollutants pass through a permanent magnetic filter screen 11 every time, a magnetic field of the permanent magnetic filter screen 11 attracts iron powder and enables the iron powder to be attracted to the outer wall of the permanent magnetic filter screen 11 to achieve the effect of filtering out the iron powder; and in this way, through one cycle every time, large particles, small particles, iron powder and other pollutants in the bearing lubricating oil can be filtered out once.

Description

technical field [0001] The invention is mainly used for removing oil stains from lubricating oil of rotor bearings of large generators. Background technique [0002] The cleanliness of the lubricating oil entering the rotor bearing of a large generator is very high. The lubricating oil needs to be transported to the oil storage room of the rotor bearing by pipelines. The cleanliness of the inner wall of these pipelines is also very high, otherwise it will pollute the bearing lubrication. When installing the oil pipeline, the cutting, grinding, welding of the pipe joint and the cleaning of the inner wall of the pipeline will pollute the bearing lubricating oil, especially the iron filings and iron left on the inner wall of the pipeline during the cutting and grinding of the pipeline joint. Pollutants such as powder are difficult to clean. The conventional method of oil filtration is to install a filter screen on the oil pipeline for multiple cycle filtration. This method need...

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Problems solved by technology

[0002] The cleanliness of the lubricating oil entering the rotor bearing of a large generator is very high. The lubricating oil needs to be transported to the oil storage room of the rotor bearing by pipelines. The cleanliness of the inner wall of these pipelines is also very high, otherwise it will pollute the bearing lubrication. When installing the oil pipeline, the cutting, grinding, welding of the pipe joint and the cleaning of the inner wall of the pipeline will pollute the bearing lubricating oil, especially the iron filings and iron left on the inner wall of the pipeline during the cutting and grinding of the pipeline joint. Pollutants such as powder are difficult to clean. The conventional method of oil filtration is to install a filter screen on the oil pipeline for multiple cycle filtration. This method needs to replace the filter screens with different meshes many times, which takes a long time and the oil filtration cycle is long. , time-consuming

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