Filter for separating solid contaminants from a fluid, especially solid contaminants in a reactor cooling water used in nuclear reactor plants
AssigneeAB Asea-Atom
InventorLennart Liljegren
Life of this patent
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Abstract
A cartridge-type filter has easily exchangeable and safe distance handling filter cartridges contaminated with radiation-emitting contaminants. The filter includes a filter housing having an inner annular shoulder forming a valve seat, and a filter cartridge has an outer ring in sealing engagement with the shoulder for both supporting the cartridge and dividing the filter housing into two separate chambers respectively in communication with the supply and return conduits provided on the housing. A portion of the reactor cooling water is conducted continuously through the filter circuit which is parallel to the main water flow.
Claims9
A cartridge filter for separating radioactive contaminants from reactor cooling water used, for example, in nuclear power plants, comprising, at least one top opening filter housing having a supply conduit thereon for admitting cooling water to be filtered and a return conduit thereon for returning the filtered water, a lid covering said top opening, said housing having in its upper part an inwardly directed annular shoulder defining a valve seat, at least one removable filter cartridge containing filter material and being provided at its upper part with an outwardly directed supporting ring thereon in sealing engagement with said shoulder for carrying said filter cartridge freely suspended within said housing, said cartridge dividing said housing into two separate chambers respectively in communication with said supply and said return conduits, and said lid being interconnected with the filter cartridge so that by lifting said lid the cartridge is simultaneously lifted.
Dependencies are inferred from the claim text.