The transformer with double tank for the preventation of the insulation oil outflow

摘要

The present invention maintains a constant space outside the same transformer primary enclosure (11) in order to prevent a second disaster such as the spread of fire as the insulated transformer breaks out due to abnormal pressure generated inside. By installing a secondary enclosure (21) relates to a double enclosure transformer to prevent the insulating oil from leaking to the outside when the enclosure is damaged.;Due to the low cost and excellent cooling and insulation, large transformers are mainly using inlet transformers. However, the internal pressure of the transformer increases due to gas generation or insulation oil expansion due to the occurrence of fault current, interlayer short circuit, phase short circuit, etc. Occasional occurrence of the spread of. Therefore, in order to eliminate this problem, the gas transformer is insulated with SF6 gas, but not with insulating oil, which has the possibility of spreading fire, but there is a disadvantage of cooling and the price is very expensive.;In the present invention, when the primary enclosure 11 is exploded, the secondary enclosure 21 is installed to surround the primary enclosure 11 while forming the outlet insulation receiving space 23 to prevent the insulating oil from leaking to the outside. . If an abnormal pressure is generated inside the transformer and the primary enclosure 11 explodes, the insulating oil will flow out of the primary enclosure 11 and the insulating oil will be accommodated in the outflow insulating containment space 23 and because of the secondary enclosure 21. It does not spill out, preventing fire spread. When the primary enclosure 11 explodes and the insulating oil inside the primary enclosure 11 flows into the outflow insulation receiving space 23, the pressure inside the primary enclosure 11 is drastically lowered. Since the space between the primary enclosure 11 and the secondary enclosure 21 may cause a problem in cooling, the cooling pipe 31 having the heat collecting plate 32 attached to the outer wall of the primary enclosure is disposed and cooled to solve the problem. do.;Transformers, double enclosures, explosions, cooling