Filter holder and gasket assembly for candle or tube filters
AssigneeSiemens Westinghouse Power Corporation
InventorsThomas Edwin Lippert, Mary Anne Alvin, Gerald Joseph Bruck, Eugene E. Smeltzer
Life of this patent
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Abstract
A filter holder and gasket assembly for holding a candle filter element within a hot gas cleanup system pressure vessel. The filter holder and gasket assembly includes a filter housing, an annular spacer ring securely attached within the filter housing, a gasket sock, a top gasket, a middle gasket and a cast nut.
Claims12
A filter holder and gasket assembly for holding a thick walled candle filter element within a hot gas cleanup system pressure vessel, the filter element including a body having a generally cylindrical portion and a flange portion;
- the flange portion having a top surface and an outer diameter surface;
- said filter holder assembly comprising:
- a filter housing, said filter housing having a paripheral sidewall, said peripheral sidewall defining an interior chamber for receiving said flange portion of said filter element;
- a generally annular spacer ring, said spacer ring positioned within said interior chamber;
- at least one gasket sock formed to be positioned around the outer diameter surface of said flange portion to prevent contact between the outer diameter surface of the flange portion, and said filter housing;
- at least one top gasket formed to be positioned on the top surface of said flange portion of the filter element for providing a seal between said spacer ring and the top surface;
- at least one middle gasket formed to be positioned between said gasket sock and said filter housing sidewall to provide a seal between the filter body and said filter housing sidewall;
- a nut for securing the filter element, the filter housing, and the top and middle gaskets within the pressure vessel;
- and
- said top gasket and said middle gasket each comprising an interior mat, said mat being made of a ceramic fibrous material;
- and a braided casing formed around said interior mat, said braided casing made of a flexible ceramic material.
A filter holder and gasket assembly for holding a thin-walled composite candle filter within a hot gas cleanup system pressure vessel, the filter element including a body having a generally cylindrical portion and a flange portion;
- the flange portion having an outer diameter surface and an inner diameter surface, said filter holder assembly comprising:
- a filter housing, said filter housing having a peripheral sidewall, said peripheral sidewall defining an interior chamber for receiving said flange portion of said filter element;
- a generally annular spacer ring, said spacer ring positioned within said interior chamber, said spacer ring including a top surface and a bottom surface, and a transitional transducer depending from said bottom surface, said transitional transducer including a continuous sidewall having varying diameters that gradually decrease as the sidewall extends in a direction away from the bottom surface, said diameters being formed such that the transducer sidewall will not contact the inner diameter surface of the filter flange;
- at least one gasket sock formed to be positioned around the outer diameter surface of the flange portion to prevent contact between the outer diameter surface of the flange portion, and said filter housing;
- at least one interior gasket formed to be positioned adjacent to the inner diameter surface of the flange portion to provide a seal between the inner diameter surface of the flange portion and the transitional transducer;
- at least one middle gasket formed to be positioned between said gasket sock and said peripheral sidewall to provide a seal between the filter body and said peripheral sidewall;
- and
- a nut for securing the filter element, the filter housing and the interior and middle gaskets within the pressure vessel.
Dependencies are inferred from the claim text.