Special oil purifier for transformer

A special oil purifier for transformers, often known as a transformer oil purifier or transformer oil filtration system, is designed to maintain and improve the quality of insulating oil used in transformers. The oil in a transformer serves as both an insulator and a coolant, so keeping it clean and free of moisture, gases, and particulate matter is essential for reliable transformer operation.

 Functions of a Transformer Oil Purifier:

1. Dehydration: Removes moisture (free, emulsified, and dissolved water) from the transformer oil.

2. Degasification: Eliminates dissolved gases that can be harmful, such as oxygen, nitrogen, and hydrogen, which can cause partial discharges or arcing.

3. Filtration: Removes solid particles and impurities that can cause electrical insulation breakdown.

4. Regeneration (Optional): Some systems include oil regeneration capabilities to restore oil properties by removing acidic compounds, sludge, and oxidation products.

 Key Features of Transformer Oil Purifiers:

- Vacuum Technology: Uses vacuum distillation to reduce the boiling point of water and gases, allowing their removal at lower temperatures.

- Heaters: Preheat the oil before it enters the vacuum chamber, improving the efficiency of water and gas removal.

- Fine Filters: Equipped with multi-stage filters to remove particulate contaminants.

- Degassing Columns: Special chambers where the oil is exposed to vacuum conditions for gas removal.

- Online and Offline Operation: Some purifiers allow oil treatment without disconnecting the transformer from the power supply (online mode), while others are used offline during maintenance.

 Benefits of Using a Transformer Oil Purifier:

- Improves Oil Dielectric Strength: Removing water and gases enhances the insulating properties of the oil, which is critical for transformer performance.

- Extends Oil and Transformer Life: Regular purification reduces oil degradation, preventing damage to the transformer and extending its service life.

- Reduces Maintenance Costs: Keeping the oil clean minimizes the need for frequent oil changes and major repairs.

- Prevents Transformer Failures: Water and gas contamination can lead to insulation breakdown, overheating, and even catastrophic transformer failures.

 Types of Transformer Oil Purifiers:

1. Single-Stage Vacuum Purifiers: Suitable for lightly contaminated oil; these systems typically involve basic filtration and dehydration.

2. Double-Stage Vacuum Purifiers: More advanced units designed for higher efficiency in removing water and gases, often used for large power transformers.

3. Mobile Oil Purification Systems: Portable units that can be moved to different transformer sites for on-site oil treatment.

4. Transformer Oil Regeneration Systems: Include additional steps to restore oil properties by removing sludge, acidity, and color deterioration.

 Leading Manufacturers of Transformer Oil Purifiers:

- GlobeCore

- Enervac Corporation

- Pall Corporation

- Herzog AG

- Centrifuge Systems

- Acore Filtration Co.

- Hy-Pro Filtration

 When to Use a Transformer Oil Purifier:

- Routine Maintenance: Regularly purifying transformer oil helps maintain optimal insulation and cooling properties.

- After Transformer Repairs: Purifying the oil ensures it is free from contaminants that may have entered during maintenance.

- In Case of Oil Quality Degradation: If oil tests indicate high moisture content, dissolved gases, or particulate contamination, purification is necessary.

Using a transformer oil purifier can significantly enhance the reliability, efficiency, and lifespan of transformers by maintaining the quality of the insulating oil.