Cavity closure arrangement for high pressure vessels

Patent · Thu Jan 01 00:00:00 EST 1981

OSTI ID:864060

Amtmann, Hans H.

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.

• Research Organization: GA Technologies Inc., San Diego, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AT03-76SF71023
• Assignee: The United States of America as represented by the United States Department of Energy (Washington, DC)
• Patent Number(s): 4,303,177
• Application Number: 06/017418
• OSTI ID: 864060
• Resource Relation: Patent File Date: 1979 Mar 05
• Country of Publication: United States
• Language: English

Related Subjects

cavity
closure
arrangement
pressure
vessels
vessel
temperature
gas-cooled
reactor
liner
disposed
penetration
defines
access
therein
adapted
sealing
relation
annular
mounting
flange
formed
plurality
radially
movable
locking
blocks
thereon
outer
serrations
releasable
interlocking
engagement
internally
upper
effect
strength
hold-down
embodiment
ramping
surfaces
block
bias
sealed
actuated
positions
gas-cooled reactor
temperature gas-cooled
temperature gas
reactor vessel
pressure vessel
pressure vessels
sealing relation
sealed relation
closure arrangement
cooled reactor
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