What are the methods and requirements of vacuum oil filling equipment?

Vacuum oil injection is necessary for transformer and reactor of vacuum oil injection equipment 220 kV and above; vacuum oil injection is suitable for 110 kV equipment. The specific way is to vacuum at an average speed, reach the specified vacuum degree and connect for 2 hours, start to inject oil into the transformer tank, the whole process of oil injection should be connected with vacuum, the temperature of oil injection should be slightly higher than the body temperature. When the oil is injected into the transformer at a speed of 3-5 t/h about 200 mm from the top of the box, it is restrained and the vacuum is continuously pumped. The connecting time is not less than 2 hours at 110 kV and not less than 4 hours at 220 kV. The transformer must carefully monitor the elastic deformation of the tank when it is pumped, and the value is not more than twice the wall thickness. The limit allowable value of transformer vacuum pumping is: 35kV transformer capacity in 4000 ~ 31500kVA does not exceed 0.051Mpa; 110kV transformer capacity in 1600kVA and below does not exceed 0.051Mpa; 110kV transformer capacity in 2000 kVA and above does not exceed 0.051Mpa; 220kV ~ 330kV transformer does not exceed 0.101Mpa.

PSGLJ Series Light Precision Filter is mainly used for special filtration of solid impurities such as various kinds of oil, lubricating oil, insulating oil, etc., especially for high viscosity oil which can not be filtered by ordinary filter. It is the replacement product of plate and frame pressure filter. It is more flexible, convenient, low cost and high precision than vacuum oil filter in the case of only removing mechanical impurities. It has a wider use and a longer life than ordinary pressure filter. It can be heated at constant temperature to reduce the consistency. It does not need to change filter paper, and has a high and stable filtering precision. Therefore, JL series light precision filters are widely used in electric power, manufacturing, automobile, railway, smelting, steel rolling, aviation, industry and mining, etc. They can filter hydraulic oil, turbine oil, mechanical oil, compressor oil, spindle oil, insulating oil and all liquid oil with lubricating function deeply, but ethanol and gasoline must not be filtered. Non lubricating and flammable liquids.

The main function of electrical insulating oil is cooling and insulation, and also has the effect of eliminating the arc when the circuit is cut off. Under the action of heat and electric field, the contact between oil and oxygen is oxidized gradually to form various oxides, alcohols, aldehydes, acids and so on, and finally forms insoluble colloid and sludge precipitation. These acids reduce the insulation performance of the transformer, so the transformer oil must be filtered. And exhaust treatment is also done. Because the gas will affect the insulation performance of insulating oil. Transformer insulating oil can be filtered by DZJ-L vacuum oil filter.