| 摘要 |
1,202,965. Cooling electrical apparatus. GENERAL ELECTRIC CO. 9 Aug., 1968 [25 Aug., 1967], No. 38047/68. Heading F4U. [Also in Division H2] In a collector employing a conducting liquid such as mercury for transmitting current between stationary and rotating parts 4, 12 of a dynamo-electric machine (see Division H2) cooling water is circulated through conduits 54, 58 and the cooling circuit includes a condenser 82 for steam generated in the collector and removed through conduit 58, the condensate being returned to a supply well 84, which, together with a mercury reservoir 69 connected to the collector by conduits 62, 66, is located at a height suitable for maintaining a supply of liquid. When the collector is stationary, shutoff valves 68, 86 prevent the flow of mercury and water, the said valves being opened by a rise in pressure in line 90 caused by the mercury in the collector becoming pressurized due to centrifugal force on rotation of part 12. |
