Apparatus for separating water and steam in a nuclear steam generator

A steam-water separator that comprises in combination an outer cylindrical housing disposed in an axially upright position, a perforate housing concentrically aligned within the outer housing having axially disposed inlet and outlet ports at opposite ends thereof arranged to provide an annular space between inner and outer housing members, spinner vanes in the inlet port of the perforate housing adapted to subject fluid flowing axially therethrough to a rotary movement that imparts centrifugal force to said liquid sufficient to move the liquid radially through the perforations of the inner housing while the steam continues to flow axially to said outlet port, inclined spinner vanes that comprise forward and aft leaves joined by a continuous bight in the annular space between inner and outer housing members for imparting a rotary movement to the water flowing therethrough, and apertures in the outer housing wall for venting residual steam radially therethrough after it has been separated from water by passing over the vanes in the annular space between housing members.