Pressure vessel opening seal

Details Pressure vessel opening seal Pressure vessel opening seal

1985-04-04

1986-05-20

Shoap, Allan N.

Receptacles

Outlet or junction box type

Sectional receptacle

220 67, 220288, 220327, 220378, B65D 4104, B65D 4500, F16J 1300

Patent

active

045895643

ABSTRACT:
A high pressure vessel (19), having a curved end piece (22) and an access plug (20) threaded into a recessed hole (26) in the end piece and sealed therein by a weld (46) disposed around the periphery of the plug, is provided with an annular lip (28) around the access hole. The flask lip has a sloped surface (34) that cooperates with the lip (38) of a cap (36) that is clamped to the vessel so that the clamping force on the cap is directed by the sloped surface through the weld to precompress the weld, thereby relieving the tensile stresses on the weld which result from pressure inside the vessel acting inside the hemispherical end piece of the vessel.

REFERENCES:
patent: 1896519 (1933-02-01), Kendall
patent: 1958582 (1934-05-01), Kerr et al.
patent: 2519572 (1950-08-01), Hill
patent: 2800242 (1957-07-01), Sauthoff
patent: 2857073 (1958-10-01), Tinker

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