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US 4,405,055 AGranted
Vaulted cover with flange and plurality of pipe fittings
AssigneeHochtemperatur-Reaktorbau GmbH
InventorsReinhold Koerdt, Josef Schoening, Hans-Georg Schwiers
Life of this patent
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Abstract
A vaulted cover for an opening in a pressure vessel comprising a vaulted center piece and an annular rim surrounding thermal insulation material of a cover flange. The rim is assembled of two coaxially arranged cylindrical sections. Expansion gaps and sealing disks are provided about pipe fittings in said vaulted cover in a manner that permits release of pressure through gaps formed by said sealing disks.
Claims13
A vaulted cover for an opening in a pressure vessel comprising:
- a first metal covering having a vaulted center piece and an annular rim member;
- a plurality of pipe fittings welded onto said first covering;
- a second metal covering adjacent said first metal covering, forming a space therebetween and having an annular flange;
- thermal insulation material in said space between said first and second metal coverings;
- said rim member comprising an inner annular cylindrical section and an outer cylindrical section coaxially arranged to form an annular space therebetween and a disk-shaped member covering said annular space
- wherein said vaulted center piece is welded to the inner cylindrical section and both of said cylindrical sections are fastened to said flange on said second metal covering by a sliding seat.
3 more elements
Dependencies are inferred from the claim text.