| 摘要 |
PURPOSE:To prevent leakage of cooling liquid by providing a cover guiding the cooling wind which cools an exciter on the outer periphery of an outlet chamber, connecting the outlet chamber and the outside of the cover, and introducing the cooling wind into the outlet chamber from a sealing portion. CONSTITUTION:A guide cover 10 guiding the cooling wind which cools an exciter on the outer periphery of a cooling-liquid inlet and outlet device is provided, so that the external pressure is higher than the inner pressure of the third outlet chamber 63. A connecting pipe 11 is installed to the outlet chamber 63, and an opening is provided at the outside of the guide cover 10. In this constitution, since the cooling wind enters the inside of the outlet chamber 63 as shown by the arrows, the leakage of the cooling liquid from the outlet chamber 63 can be prevented. Furthermore, since the length of the axial direction of a labyrinth seal 84 can be shortened, an inlet and outlet pipe 4 of the cooling liquid can be shortened and the axial vibration can be prevented. |
