Transformer Oil Centrifuge Function Introduction

A transformer oil centrifuge is a device specifically designed for purifying transformer oil. Its primary function is to remove impurities, moisture, and solid particles from the oil through centrifugal separation, thereby restoring or improving the transformer oil's insulation properties and chemical stability. The following is a detailed explanation of its core functions and effects:

1. Impurity and Solid Particle Removal

- Function: The centrifugal force generated by high-speed rotation separates suspended solid contaminants such as metal debris, dust, fibers, and carbides from the oil.

- Purpose: Prevents the accumulation of solid particles, which can lead to deterioration of the transformer's internal insulation and mechanical wear.

2. Dehydration (Water Removal)

- Function: Separates free water from emulsified water in the oil. Water, having a greater density than oil, is drawn toward the separator wall by centrifugal force and discharged.

- Purpose:

- Water can significantly reduce the dielectric strength of transformer oil, leading to insulation failure.

- Reducing moisture in the oil can slow oil aging and prevent rust on metal components within the transformer.

3. Extending Transformer Oil Life

- Function: Regular purification removes oxidation products (such as acidic substances and sludge), slowing oil degradation.

- Effect: Reduces oil change frequency, saves maintenance costs, and ensures long-term stable operation of the transformer.

4. Improving Insulation Performance

- Function: Purified oil restores high dielectric strength, ensuring effective insulation.

- Effect: Prevents partial discharge or breakdown accidents caused by oil contamination, ensuring the safety of power equipment.

5. Assisting Maintenance and Fault Prevention

- Function: By analyzing separated impurities (such as metal particles), internal wear or fault locations can be indirectly identified.

- Effect: Provides a basis for preventive maintenance and reduces the risk of unplanned downtime.

6. Environmental and Economic Benefits

- Function: Recycles and purifies used oil, reducing waste oil emissions.

- Effect: Complies with environmental requirements and reduces the cost of purchasing new oil.

Workflow

1. Oil Intake: The oil to be treated is pumped into the centrifuge drum. 2. Centrifugal Separation: High-speed rotation (typically thousands of rpm) separates impurities, water, and oil.

3. Deslagging: Impurities settle on the drum walls and are removed periodically, either manually or automatically.

4. Oil Discharge: Purified, clean oil is discharged from the top.

Applications

- Regular transformer maintenance (e.g., substation overhaul).

- Fresh oil treatment (removing impurities introduced during transportation or storage).

- Restoring oil quality after a fault (e.g., regeneration after moisture or contamination).

Advantages Compared to Other Purification Methods

- vs. Oil Purifier: More efficient in removing fine particles and water, suitable for heavily contaminated oil.

- vs. Vacuum Dehydration: No heating required, preventing high-temperature oil oxidation, but slightly inferior to vacuum dehydration.

Precautions

- Adjust the centrifuge speed and processing time based on the type of oil contamination (e.g., particle size, water content).

- Regularly maintain the centrifuge drum, seals, and other components to prevent secondary contamination.

Through the above functions, the transformer oil centrifuge becomes an indispensable equipment in power system maintenance, which is directly related to the operating efficiency and service life of the transformer.