Transformer oil pillow
There are three forms: corrugated, capsule, and diaphragm.
1. Capsule-type oil pillow, which uses a rubber capsule to separate the transformer oil from the outside atmosphere and provide the transformer oil with space for thermal expansion and contraction.
2. Diaphragm-type oil pillow uses a rubber diaphragm to separate the transformer oil from the outside atmosphere and provide space for thermal expansion and contraction of the transformer oil.
3. Corrugated oil pillow uses a metal expander composed of metal corrugated sheets to separate the transformer oil from the outside atmosphere and provide space for thermal expansion and contraction of the transformer oil. Corrugated oil pillows are divided into two types: internal oil type and external oil type. The internal oil type has better performance, but is larger in size.
