Layered pressure vessel head with machined surfaces

Details Layered pressure vessel head with machined surfaces Layered pressure vessel head with machined surfaces

1979-05-18

1981-02-24

Pollard, Steven M.

Receptacles

Outlet or junction box type

Sectional receptacle

220 83, B65D 610, B65D 804

Patent

active

042522447

ABSTRACT:
A head for a pressure vessel has a contoured liner and successive wraps that overlie the liner and conform in contour to it. The liner has a machined outwardly presented surface, whereas the wrap immediately over it has a machined inwardly presented surface, and the liner and wrap are welded together with their opposed machined surfaces in face-to-face contact. The same holds true with the successive wraps so that two adjacent wraps are in face-to-face contact along their machined surfaces. A wrap may be heated prior to being placed over the liner or over another wrap so that upon cooling the wrap shrinks and places the underlying liner and wraps in a state of precompression. Both the liner and the various wraps may be formed from segments which are dished to the proper contour, then welded together into a rough liner or wrap, and finally machined along the appropriate surfaces. They may likewise be formed from single plates, forgings or castings.

REFERENCES:
patent: 1925118 (1933-09-01), Stresau
patent: 2337247 (1943-12-01), Kepler
patent: 2652943 (1953-09-01), Williams
patent: 2684528 (1954-07-01), Rossheim et al.
patent: 2933214 (1960-04-01), Douyard
patent: 3457961 (1969-07-01), Long
patent: 3604587 (1971-09-01), Pechacek

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