| 摘要 |
In a system for supplying oil to a fluid drive, the fluid drive having an impeller, and a runner fluidically coupled by oil between them, the degree of coupling being determined by the amount of oil between them, a temperature sensor is located to sense the temperature of oil as it is being discharged from the impeller-runner, and the temperature so sensed is translated into the opening and restricting of a control valve controlling the flow of oil to the fluid drive to maintain the discharged oil temperature substantially constant. An external reservoir is connected to the sump of the fluid drive by pipe of sufficient size to provide a head space above the oil being removed from the sump, and the reservoir itself is of such a size as to provide head space and to provide a dwell time long enough to permit detrainment from the oil of air entrained in the oil as it passes through the fluid drive system. AC motor driven pumps are provided connected to supply circuit oil to the fluid drive and lubricating oil to the bearings, and a stand-by DC motor driven pump is provided, energized in response to an abnormal condition such as loss of AC power, overheating of the circuit oil or drastic loss of pressure in the lubricating oil system, to supply lubrication oil directly to the bearings and cooling oil to the fluid drive.
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