Transformer Oil Purifier

Transformers is an important role in the electrical power industry. In order to make and perfect the performance of the transformer, it is necessary to use high-quality and clean transformer oil. To get this kind of transformer oil,  a transformer oil purifier is a perfect choice to filter waste transformer oil.

Dissolved gas in transformer oil can cause many problems like arcing, corona discharges and overheating–reducing the electrical efficiency. To make the transformer a smooth run and extend the service life of the transformer oil machine, we need to get better-filtered oil by filtering transformer oil. The transformer oil purifier manufactured by Chongqing Yuneng Oil Purifier Manufacturing Co. Ltd can satisfy your requirements.

The Yuneng Oil Purifier Manufacturing Co., Ltd. as an excellent transformer oil filtration machine manufacturer in Chongqing,  We have various series of transformer oil purifiers, including ZJA series, ZJB series, YZS series, JZ series. And we also have products as the 1800LPH, 3000LPH, 6000LPH, 9000LPH transformer oil purifier. The products that Yuneng produced are of fine quality and low price, It can be trusted by customers.

Transformer oil commonly degrades over time. The oil would be exposed to undesirable materials like acids, metal dust, moisture. When transformers get contaminated by dissolved gases, dust, and others, it is time to take action for the oil to filter and purify.

The transformer oil purifier series are mainly applied to improve the qualities of transformer oil for the 110KV to 500KV projects. They can effectively and rapidly rid of trace water, gas, particulate matter, etc. from the transformer oil. So as to boost the performance of transformers, which has an insulation system. This machine can effectively work in purifying transformer oil of high voltage and super high voltage transformer. Additionally, it also works for treating low viscosity lubrication oil.

Why Transformer Oil Purifier is Required?

In most cases, the quality of the transformer oil plays a key role in the efficient and long-lasting use of transformers. Unfortunately, With the long time use of transformers, the quality of the transformer oil will decrease. The liquid deterioration in the transformer may be caused by pollution, electric stress and oxidation.

The first is water pollution. In this case, this moisture or water is present in transformer oil in a micro carbon transition (referred to as emulsified water), or sometimes only some of the free water (referred to as demulsified water) at the bottom of the device.

Second, too much contact with air and water will also affect the insulation performance of transformers oil. During the operation of the transformer, the higher temperature operating environment will also speed up the oxidation speed of the transformer oil. In order to minimize oxidation, oxygen must be eliminated from the transformer as much as possible.

By purification or centrifugation, water pollution can be easily solved. However, emulsion water needs to be solved using vacuum dehydration. Therefore,  in addition to maintaining the components of the transformer regularly. At the same time, it is also necessary to maintain moisture at a lower level using a transformer oil purifier through a vacuum dehydration process.

By preventing transformer oil deterioration, it can significantly improve the life of the transformer.

How Does the Transformer Oil Purification Machine Work?

The process of transformer oil purification is mainly to remove gas, moisture and sludge in insulating oil. It mainly involves three steps in total:

  1. Risingoil temperature
  2. Remove dirt and impurities in oil
  3. Dehydration and degassing of transformer oil

Step 1: The oil temperature is increased to 65℃ by the transformer oil purifier, to produce latent heat to isolate the gas and moisture. Due to the decrease in oil viscosity, the heating oil will make it easier to filter.

Step 2: By filter candles or centrifuging action to clear the clay and dirt from insulating oil. Use classical edge filter or depth type filter can filter transformer oil by filter candles. And centrifuging action is to make the oil continuously centrifuge. After the centrifugation is separated, the dust particles settle down at the lower end, and then the oil can be filtered from the top.

Step 3: Removed impurities transformer oil is removed into the degasser. Due to the difference in oil and water boiling point, both compounds were separated, and the oil was filtered off with the help of strong centrifugation.

Typical Transformer Oil Results Before and After Purification

ConditionTest MethodsBefore regenerationAfter regeneration
AppearanceVisualCloudy brownClear and transparent
Acid number, mg КОН/gIEC 296; ASTM D-6640.630.01
Corrosive sulfurISO 5662; ASTM D-1275PresentNone
Moisture content, ppmIEC 733; ASTM D-15331705
Breakdown voltage, kVIEC 156; ASTM D-18161173
Dielectric loss tangent at 90ºСIEC 247; ASTM D-92440.001
Surface tension, mН/m, at 25ºСISO 6295; ASTM D-22852245
Mechanical contaminants size, micron 505
Oxidation stability: mg КОН/gIEC 1125А; IEC 1125B; IP-3070.2

The Structure of YUNENG Transformer Oil Purifier:

  • Dehydration (degassing) system
  • Filtering system
  • Oil heating system
  • Control panel
  • Vacuum pump, Roots pump, screw pump
  • Cooling system and condensing system
  • Automatic control and protection system

Filter transformer oil has a longer life, better performance. It can protect the transformer and its paper insulating layers, extend the service life of the transformer, and ensure the least downtime repair time.

YUNENG’s Strength:

  • A complete packaging process, just make simple preparations
  • More oil purifier parts (suitable for road trailers, casters, etc.)
  • Multi-function, the oil purifier of multiple tasks can be implemented.
  • We have a group of professionals with many years of experience and technical development capabilities in the industry, we are able to support you with the most professional advice on purification.
  • Our company has 130 employees, we are able to produce 1,000 sets of oil-filtering equipment and purification equipment for other fluids each year.

In addition to the transformer oil purifier, the YUNENG can also be provided: online oil moisture tester, flow meter, oil regeneration system, dielectric strength tester, hydraulic oil purifier, etc.

By 2020, we have sold more than 15,000 YUNENG branded oil purifiers, widely used in electric, metallurgy, petrochemical, machinery, military, railway, light industry and other industries. If you have any questions or needs about oil purifiers, please feel free to contact us.

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