Receptacles – Closures – Having means for securing or retaining closure in its closed...
Patent
1988-01-28
1989-03-28
Pollard, Steven M.
Receptacles
Closures
Having means for securing or retaining closure in its closed...
220316, 220323, B65D 4528
Patent
active
048156272
ABSTRACT:
A high preload quick operating closure for a pressure vessel (17) comprises a vessel opening or nozzle (19) having a port flange (20) with an upper surface (23), which has a wall (26) affixed thereto, the wall (26) having one or more circumferentially spaced holes (32), the combination of the wall (26) and port flange (20) forming a well (29), and a vessel head (27) forming a closure for the port flange. A plurality of wedge assemblies (30) secured to the wall (26) at holes (32), comprising hydraulically operated cylinders (39) operably connected to wedges (33) which slidably engage a tapered surface (40) of the vessel head (27) creating a larger sealing force between the head (27) and the flange (20) to seal the pressure vessel (17) with an enormous preload. The closure incorporates a control system (50) with two independent safety features to prevent the closure device from opening when the pressure vessel ( 17) is pressurized.
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Panian Michael G.
Pollard Steven M.
Westinghouse Electric Corp.
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