Oil filtering method for rotor bearing lubricating oil of large generator

Abstract

The invention discloses an oil filtering method for rotor bearing lubricating oil of a large generator. The oil filtering method for the rotor bearing lubricating oil of the large generator is mainlyused for removing oil stains of the rotor bearing lubricating oil of the large generator and is mainly composed of an upper oil tank 1, a lower oil tank 2 and an oil filtering device 4. The oil filtering method comprises the following steps that bearing lubricating oil is dropped into the lower oil tank from the upper oil tank 1 through a lower oil pipe 3, and an oil pump 5 is used for pumping thebearing lubricating oil with pollutants in the lower oil tank into the upper oil tank 1 to form a cycle; and the bearing lubricating oil with the pollutants passes through the oil filtering device 4every time, the oil filtering device 4 filters the pollutants of large particles and small particles, and each time the powdery iron powder pollutants pass through an electromagnetic induction coil 11, the electromagnetic field of the electromagnetic induction coil 11 attracts iron powder and adheres the iron powder to the outer wall of the electromagnetic induction coil 11 to filter the iron powder, so that the large particles, the small particles, the iron powder and other pollutants in the bearing lubricating oil are filtered once every cycle.

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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