초록 ▼

A gas filtration system is provided for coolant systems for dynamoelectric machines which utilizes differential pressures within the machine to induce a gas flow through the system. Valves are provided to balance dual inlet flows and the filtration system utilizes an air filter, coalescing filters a

A gas filtration system is provided for coolant systems for dynamoelectric machines which utilizes differential pressures within the machine to induce a gas flow through the system. Valves are provided to balance dual inlet flows and the filtration system utilizes an air filter, coalescing filters and gaseous containment filter in its preferred embodiment. The filtration avoids the need for additional pumping by disposing its filtering means between and in fluid communication with two or more zones having different gas pressures.

대표청구항 ▼

A gas cooled dynamoelectric machine with gas decontamination comprising: a rotor supported for rotation on a pair of axially spaced bearings, said bearings each being supplied with a lubricant; a generator frame between said pair of bearings enclosing a volume containing gas cooled parts of the mach

A gas cooled dynamoelectric machine with gas decontamination comprising: a rotor supported for rotation on a pair of axially spaced bearings, said bearings each being supplied with a lubricant; a generator frame between said pair of bearings enclosing a volume containing gas cooled parts of the machine with seal means proximate interfaces of said frame and said rotor for limiting escape of gas from said frame; said seal means having a gap in relation to said rotor through which said bearing lubricant flows in an axial direction; at least one defoaming tank located to receive lubricant and gas from the axial inward side of each of said seal means to form in said at least one defoaming tank a quantity of liquid lubricant above which exists a mist of gas and lubricant vapor; said generator frame volume having a normal cooling gas pressure at first regions proximate said seal means greater than the pressure of said mist in said at least one defoaming tank, said generator frame volume also having a second region with a cooling gas pressure less than that at said first regions and also less than that of said mist in said at least one defoaming tank; means, within said generator frame, for establishing the pressure difference between said generator frame volume first regions and said second region; first conduit means in fluid communication with said mist in each of said at least one defoaming tank for carrying said mist to a filtration system effective to remove lubricant vapor therefrom; and, second conduit means in fluid communication with said second region of said generator frame volume for carrying clean cooling gas from said filtration system.