| 摘要 |
PURPOSE:To supply all radiators with cooling oil, and to improve cooling efficiency by previouly connecting a plurality of the radiators by a common pipe and previously installing a plurality of series consisting of oil-feed pumps and check valves between an oil-feed pipe connected to a tank and common pipe when these radiators connected in parallel are connected to the tank encasing a transformer, etc. CONSTITUTION:The upper and lower oil-feed pipes 3 are each connected to the upper and lower ends of the tank 1 encasing the transformer or a winding or the like, and a plurality of the radiators 2 are connected in parallel between these pipes. The common pipe 8 is each connected previously on the lower sides of several radiator 2 through oil-feed pipes 7 at that time, and a plurality of the series 4 consisting of the oil-feed pumps 5 and the check valves 6 are connected between the pipe 8 and the lower pipe 3. Accordingly, cooling oil is flowed through all radiators 2 regardless of the number of the oil-feed pumps 5, and cooling efficiency is improved. |
