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Title: Cavity closure arrangement for high pressure vessels

Abstract

Described is a closure arrangement for a pressure vessel such as the pressure vessel of a high temperature gas-cooled reactor wherein a liner is disposed within a cavity penetration in the reactor vessel and defines an access opening therein. A closure is adapted for sealing relation with an annular mounting flange formed on the penetration liner and has a plurality of radially movable locking blocks thereon having outer serrations adapted for releasable interlocking engagement with serrations formed internally of the upper end of the penetration liner so as to effect high strength closure hold-down. In one embodiment, ramping surfaces are formed on the locking block serrations to bias the closure into sealed relation with the mounting flange when the locking blocks are actuated to locking positions.

Inventors:
Publication Date:
OSTI Identifier:
5448688
Patent Number(s):
US 4303177
Application Number:
TRN: 82-012023
Assignee:
Department of Energy
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 5 Mar 1979; Other Information: PAT-APPL-017418
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; HTGR TYPE REACTORS; PRESSURE VESSELS; CLOSURES; DESIGN; HIGH TEMPERATURE; CONTAINERS; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; REACTORS; 210300* - Power Reactors, Nonbreeding, Graphite Moderated

Citation Formats

Amtmann, H H. Cavity closure arrangement for high pressure vessels. United States: N. p., 1981. Web.
Amtmann, H H. Cavity closure arrangement for high pressure vessels. United States.
Amtmann, H H. Tue . "Cavity closure arrangement for high pressure vessels". United States.
@article{osti_5448688,
title = {Cavity closure arrangement for high pressure vessels},
author = {Amtmann, H H},
abstractNote = {Described is a closure arrangement for a pressure vessel such as the pressure vessel of a high temperature gas-cooled reactor wherein a liner is disposed within a cavity penetration in the reactor vessel and defines an access opening therein. A closure is adapted for sealing relation with an annular mounting flange formed on the penetration liner and has a plurality of radially movable locking blocks thereon having outer serrations adapted for releasable interlocking engagement with serrations formed internally of the upper end of the penetration liner so as to effect high strength closure hold-down. In one embodiment, ramping surfaces are formed on the locking block serrations to bias the closure into sealed relation with the mounting flange when the locking blocks are actuated to locking positions.},
doi = {},
url = {https://www.osti.gov/biblio/5448688}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {12}
}