| 摘要 |
PURPOSE:To obtain the small-sized gas insulated transformer having high cooling efficiency and simple structure by a method wherein a clamp with which an iron core will be clampled is formed into hollow structure, a liquid cooling medium is fed into the clamp from outside a tank, and the clamp is cooled from inside. CONSTITUTION:The liquid cooling medium 12 fed into a tank 1 passing through an upper pipe 8a by a pump 11 passes pipes 9a, 9b and 10, and fed into the upper and the lower clamps 5a, 5b, 6a and 6b. At this point, the clamps 5a, 5b, 6a and 6b are cooled by the liquid cooling medium 12, the liquid cooling medium 12 collected in the clamps 5a, 5b, 6a, and 6b overflows from exhaust pipes 13a, 13b, 14a and 14b, and it is collected at the bottom part of the tank 1. The liquid cooling medium 12 collected at the bottom part of the tank 1 passes the lower pipe 8b and sent to a cooler 7 passing through a lower pipe 8b by a pump 11, and the liquid cooling medium 12 is circulated repeatedly. As a result, the lower clamps 5a, 5b, 6a and 6b are uniformly and effectively cooled by the liquid cooling medium 12 from the inside of the hollow part.
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