What equipment can filter transformer oil?

The following are the main types of equipment used to filter transformer oil, each designed for different purification needs (such as water removal, impurity removal, and degassing):

1. Vacuum Oil Filter (Most Commonly Used)

- Function: Efficient dehydration, degassing, and impurity filtration

- Applicable Oils: Transformer Oil (Insulating Oil), Turbine Oil, etc.

- Features:

- Removes moisture and gases through vacuum evaporation and precision filtration

- Filtration accuracy of 1-5 microns

- Typical Models: ZJB Series, LY Series

2. Plate and Frame Oil Filter

- Function: Primarily filters solid particles and mechanical impurities

- Applicable Scenario: Initial purification of transformer oil or heavily contaminated oil

- Features:

- Simple structure and low cost

- Requires frequent filter paper/cloth replacement

- Filtration accuracy of 10-30 microns

3. Centrifugal Oil Filter

- Function: Separates moisture and mechanical impurities

- Applicable for: Transformer oil with high water content

- Features:

- Uses centrifugal force to separate impurities, eliminating the need for a filter element

- However, its effectiveness against dissolved water and gases is limited

4. Coalescing and Separating Oil Filter

- Function: Deep dehydration (free water, emulsified water)

- Applicable for: Severely emulsified transformer oil

- Features:

- Uses a coalescing material to coalesce and separate small water droplets

- Often used in conjunction with a vacuum oil filter

5. Electrostatic Oil Filter

- Function: Removes tiny particles (submicron level)

- Applicable for: Precision purification of ultra-high voltage transformer oil

- Features:

- Uses an electrostatic field to adsorb particles

- However, it is ineffective against water

6. Multi-Function All-in-One

- Function: Combines vacuum, filtration, and heating functions

- Typical Models:

- Two-Stage Vacuum Oil Filter (Dehydration + Degassing + Filtration)

- Regeneration Oil Purifier (Purifies Aged Oil and Restores Acidity)

Selection Recommendations

- Mild contamination: Plate and frame oil filter or standard vacuum oil filter

- Severe water/gas content: Two-stage vacuum oil filter

- Emulsified oil: Coalescing separation + vacuum combination

- Ultra-high precision: Electrostatic oil filter (requires integration with other equipment)

For specific model recommendations, please provide the oil condition (water content, impurities, etc.) and flow rate requirements.