Flushing system and flushing method of lubricating oil system of turbogenerator set

Abstract

The invention discloses a flushing system and a flushing method for the lubricating oil system of a turbine generator set. The first step is to connect the bearing seat and the oil inlet and return pipe according to the design state; the second step is to remove the bearing oil inlet pipe inside the bearing seat; the third step is to open the third Use the first oil filter to clean the main oil tank and bearing seat; step four, stop the first oil filter and pass the lubricating oil in the main oil tank through the second filter. Pour all the oil into the oil storage tank, clean the main oil tank and bearing seat; step 5, pour the lubricating oil from the oil storage tank into the main oil tank through the second oil filter, turn on the first oil filter, and lubricate the lubricating oil entering the main oil tank. The oil is sampled and tested. When the result reaches NAS7, restore the oil pipeline inside the bearing seat and complete the flushing. When the test result does not reach NAS7, repeat steps three to five. The lubricating oil can directly enter the bearing seat for flushing and then return to the main oil tank. Reduce temporary measures at the oil return pipe of each bearing seat, save costs, shorten the installation period, and avoid secondary pollution of oil.

Description

Technical field [0001] The invention relates to the technical field of lubricating oil cleanliness, in particular to a flushing system and a flushing method of the lubricating oil system of a steam turbine generator set. Background technique [0002] The lubricating oil system of a turbo-generator set is a very complex system that includes a large number of large and small diameter pipes and lubricating oil. Even small harmful particles may cause damage to the unit's bearings, resulting in costly downtime for maintenance. [0003] At present, the capacity of newly installed units at home and abroad is increasing, and the lubricating oil system is correspondingly more complicated, and the oil filling capacity of the system is gradually increasing. At this stage, 300MW and above units generally use a large-flow oil filter as the flushing power when purifying the oil quality of a steam turbine generator unit. The flushing source is divided into three channels, and the three-way flushi...

AI Technical Summary

Problems solved by technology

[0004] Using the above method to improve the cleanliness of oil quality, the cycle is relatively long, and there are many factors affecting oil quality

After the first step of flushing is completed, it is necessary to cut off a large number of temporary pipes and restore the formal pipes, which causes secondary pollution of oil quality. During the implementation process, electric fire welding is required, which has great potential safety hazards

And in the next second step, it is necessary to repeat all the work within the scope of step one, wasting a lot of time

The lubricating oil storage and delivery system uses carbon steel pipes, which are prone to rust after long-term use and pollute the oil quality

[0005] At present, the pipelines of the lubricating oil storage and delivery system of the unit are designed as carbon steel pipelines, which requires that the pipelines must be pickled before installation, so the quality of pickling also directly affects the cleanliness of the lubricating oil, but the carbon steel pipelines are affected by pickling. Due to the influence of the type and concentration of the acid, the skill level of the pickling personnel, etc., the quality of the pickling is also uneven, which leads to the frequent occurrence of rusting after the pipeline is installed, resulting in oil pollution

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