Purpose of transformer oil filtration

During the on-site installation of the transformer, it is very important to prevent the transformer from getting wet. The process of transformer oil treatment is closely related to preventing the transformer from getting wet. filter.

Transformer oil purifier is a kind of mechanical equipment that filters solid impurities, moisture, gas, etc. It can be used for online oil filtering, vacuum oil injection and vacuum drying.

Transformer oil filter preparation

By contacting the transformer manufacturer, determine the transportation method of the transformer, the total weight of the oil required for installation and the grade of the transformer oil, and determine whether the transformer oil is transported in barrels or cans. If shipping in cans, determine if the tank can be used on-site during the transformer installation process.

According to the information of the transformer manufacturer, plan the construction site, and be equipped with high vacuum oil filter, plate and frame oil filter, oil filter paper, vacuum pump, vacuum pump oil, mercury vacuum gauge, pointer vacuum gauge, pointer pressure gauge, oil Tester, oil pipe, valve, oil storage tank. Transformer oil pipelines and vacuuming pipelines can use reinforced PVC plastic hoses. In order to improve the quality of oil filtering, the oil storage tank should be equipped with a moisture absorber.

Temporary power boxes, water sources and fire extinguishing equipment are arranged on site.

Oil filters, vacuum pumps, oil storage tanks, oil pipelines, transformers, and temporary power boxes must be reliably grounded.

If the grade of the remaining oil in the oil filter and the oil storage tank is different from that of the new oil, the remaining oil in the oil filter and the oil storage tank must be removed and stored separately. Clean the inside of the oil storage tank, keep the internal seal of the oil storage tank clean, check that the color of the moisture absorbent inside the installed moisture absorber is normal, and the oil level of the oil seal is normal.

Three. Transformer oil filter method steps

When the canned oil is drained, connect the oil pipeline, the high vacuum oil purifier self-circulates to heat the oil temperature, and the oil purifier cleans itself. Use an oil filter to clean the hot oil flush oil lines. The inside of the oil storage tank can be cleaned without transformer oil. The flushing oil should be stored separately and marked well.

When draining oil from barrels, use a plate-and-frame oil filter. Before using the plate and frame oil filter, the interior should be cleaned. The oil pipe extending into the oil drum should be made of galvanized pipe. The front end of the nozzle is processed into 45, and the nozzles at both ends are polished smoothly. Before use, the inside and outside of the galvanized pipe must be cleaned. When the barreled oil is extracted to the bottom, check the oil quality at the bottom of the barrel. If there are many impurities, the bottom oil may not be extracted.

After the transformer oil arriving at the site is introduced into the oil storage tank with an oil filter, the transformer oil is filtered with a high vacuum oil filter. In order to improve the oil filtration effect, the oil filtration of the oil storage tank should adopt the method of inverted oil filtration, that is, the oil in one oil storage tank is completely filtered into another oil storage tank through a high vacuum oil filter, and then from the other oil storage tank. Filter into the original storage tank. If there are few oil storage tanks on site, use the oil storage tank self-circulation, and do a good job of sealing the oil tank.

The outlet temperature of the oil filter should not be lower than 50?. The filtered transformer oil should be tested with oil samples to determine whether the transformer oil is qualified for purification. Oil samples can be taken from the oil filter sampling valve.