The main function of the transformer oil pillow is to adjust the oil volume and ensure that the transformer oil tank is always full of oil. When the volume of the transformer oil expands or shrinks due to temperature changes, the oil pillow plays the role of storing and replenishing oil. In addition, the oil pillow can also reduce the contact surface between the transformer and the air, thereby reducing the transformer's absorption of moisture, dust and impurities in the air, and protecting the quality of the transformer oil.
How does the oil pillow work?
The transformer oil pillow is usually located in the oil tank, and its working principle is mainly to use the characteristics of oil volume expansion and compression to adjust the oil volume. When the ambient temperature rises, the transformer oil will expand, causing the oil level in the oil tank to rise, exceeding the designed oil level of the transformer. At this time, the oil pillow will shrink and absorb excess oil to keep the oil level in the oil tank within the correct range. On the contrary, when the ambient temperature drops, the oil will shrink, the oil level will drop, and the oil pillow will release the previously absorbed oil to ensure that there is always enough oil in the oil tank.
In this way, through the work of the oil pillow, the oil volume can be effectively adjusted, the oil level inside the transformer can be maintained stable, the normal operation of the transformer can be ensured, and the quality of the transformer oil can be protected.
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