Pressure vessel closure device

Details Pressure vessel closure device Pressure vessel closure device

1991-11-01

1993-07-20

Huppert, Michael S.

Material or article handling

Vertically swinging load support

Door remover

292 25, 413 45, C10B 4302

Patent

active

052288250

ABSTRACT:
There is disclosed a flange or pressure vessel closure device and method for deheading a coke drum. The coke drum deheading device has an annular retaining element spring biased from a lower flange of a coke drum, and a plurality of hooks which extend from the retaining element to engage a cradle holding the bottom head against the flange. When it is desired to disengage the head from the flange, the hook retaining element is moved by a first set of cylinders toward the flange to release tension from the hooks so that they can be disengaged from the bottom head by pivoting them outwardly using a second set of cylinders or other hook pivoting means. The bottom head can then be disengaged from the flange, lowered and moved laterally away from the coke drum on a hydraulic table.

REFERENCES:
patent: 4519635 (1985-05-01), McMath

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