Steam generator feed water heater

Steam generator feed water heater comprising a pressurized enclosure, a heat exchanger through which the feed water is caused to flow, at least one horizontal condensate inlet tube, at least one condensate outlet tube at a low point on said enclosure, and a double screen device associated with said at least one condensate inlet tube and comprising an inner screen with a cylindrical sidewall and, surrounding said inner screen, an outer screen having one end linked to said inner screen, a bottom wall common to both screens constituting an impact wall facing said inner screen, and passage areas in which there are provided perforations in said screen not facing each other over most of the perimeter of their transverse cross-sections, said outer screen having a downward passage area confined between two radial planes subtending between them an angle of less that 180.degree..

Steam generator feed water heater comprising a pressurized enclosure, a heat exchanger through which the feed water is caused to flow, at least one horizontal condensate inlet tube, at least one condensate outlet tube at a low point on said enclosure, and a double screen device associated with said at least one condensate inlet tube and comprising an inner screen with a cylindrical sidewall and, surrounding said inner screen, an outer screen having one end linked to said inner screen. A bottom wall common to both screens constituting an impact wall facing said inner screen and passage areas in which there are provided perforations in said screens not facing each other over most of the perimeter of their transverse cross-sections, juxtaposed one on each side of a diametral vertical plane of said enclosure two condensate inlet tubes each being equipped with a double screen inlet device, and downward passage areas having their mean directions directed towards a line defined on the wall of said enclosure by said vertical plane.

Steam generator feed water heater comprising a pressurized enclosure, a heat exchanger through which the feed water is caused to flow, at least one horizontal condensate inlet tube, at least one condensate outlet tube at a low point on said enclosure, and a double screen device associated with said at least one condensate inlet tube and comprising an inner screen with a cylindrical sidewall and, surrounding said inner screen an outer screen having one end linked to said inner screen, a bottom wall common to both screens constituting an impact wall facing said inner screen, and passage areas in which there are provided perforations in said screens not facing each other over most of the perimeter of their transverse cross-sections, a secondary condensate inlet tube facing a part of said heater which is normally submerged and a double screen device associated with said tube comprising an entirely perforated inner screen and an outer screen perforated only in its upper half.