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Introduction of respirator for DC charging pile transformer
The breather on a DC charging pile transformer is an important component whose primary function is to maintain the dryness and cleanliness of the insulating oil inside the transformer, preventing moisture and contaminants from entering the transformer. Here is a detailed introduction to the breather on transformers for DC charging piles:
Main component
Preventing Moisture Ingress
The breather, which contains a desiccant such as silica gel, absorbs moisture from the air entering the transformer, ensuring a dry environment inside the transformer.
Air Flow Mechanism
The transformer oil expands and contracts due to temperature changes, causing air to need to flow in and out of the conservator tank. The breather provides a passage for air that is filtered of moisture.
Role of Desiccant
Silica gel effectively absorbs moisture from the air, ensuring that the air entering the transformer is dry. The color change of the silica gel (from deep blue to pink) can serve as an indicator that it needs to be replaced or regenerated.
Dust Filtration
The oil seal cup in the breather captures dust particles from the air, preventing them from contaminating the transformer oil.
Maintenance and Replacement
The breather requires regular inspection and replacement of the desiccant to ensure effective moisture absorption. Over time, the desiccant will absorb moisture until it reaches saturation, reducing its effectiveness.
Operating Principle
When the transformer heats up, the oil expands and expels air; when the transformer cools down, the oil contracts and draws in air. Air passes through the silica gel desiccant in the breather, which absorbs moisture, ensuring that only dry air enters the conservator tank.
Lubrication of Valves or Mechanical Parts
The oil in the breather is also used to lubricate moving parts within the breather mechanism, ensuring smooth operation and reducing friction and wear, which can affect the performance of the breather.
In summary, the breather on a DC charging pile transformer protects the transformer oil from contamination by absorbing moisture from the air and filtering dust, thereby extending the service life of the transformer and ensuring its reliable operation.
DC CHARGING PIlE SERIES
DC charging pile is an efficient charging facility for electric vehicles, which uses direct current (DC) to directly charge the vehicle battery, significantly reducing the charging time. Compared with traditional AC charging piles, DC charging piles are able to provide higher power output and can usually charge an EV to 80% of its capacity in 30 minutes, providing users with a convenient charging experience.
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