Safe and semi-automatic removal of heavy drum closures
First Claim
1. An assembly for providing leak-proof sealing of a vessel, comprising:
- a vessel having fluent material at a first pressure;
first and second substantially annular flanges having face-to-face engagement along first and second surfaces thereof, said surfaces abutting the interior of said vessel at a first end portion thereof, and abutting the exterior of said vessel at a second end portion thereof;
first and second main substantially annular grooves formed in said first and second surfaces, respectively;
a relief groove formed in each of said grooves;
an annular metal gasket disposed in said grooves, said gasket having a plurality of through extending openings therein extending from one relief groove to the other; and
a passage extending through one of said flanges and connected to a source of steam at a second pressure, higher than said first pressure, so that steam is supplied to said relief grooves and if there is leakage between said first and second surfaces it is of steam.
0 Assignments
0 Petitions
Accused Products
Abstract
In a coke drum an outlet arrangement is provided which allows removal of the coke from the drum without endangering the health or safety of workers heading or unheading the coke drum. Instead of using a manually removable bottom flange for the drum, a semiautomatic bottom flange removal system is provided. A spool is attached to the conventional, pre-existing, about 6 feet in diameter drum stationary bottom flange. The spool includes a tapered clamping surface. A new style removable bottom flange also includes a tapered clamping surface. The tapered clamping surfaces cooperate with clamp ring sectors movable by externally mounted hydraulic cylinders into contact with the spool and the flange, and other hydraulic cylinders mounted directly on the ring sectors move male locking surfaces into locking engagement with cooperating female locking surfaces formed on adjacent clamp ring sectors.
66 Citations
13 Claims
-
1. An assembly for providing leak-proof sealing of a vessel, comprising:
-
a vessel having fluent material at a first pressure; first and second substantially annular flanges having face-to-face engagement along first and second surfaces thereof, said surfaces abutting the interior of said vessel at a first end portion thereof, and abutting the exterior of said vessel at a second end portion thereof; first and second main substantially annular grooves formed in said first and second surfaces, respectively; a relief groove formed in each of said grooves; an annular metal gasket disposed in said grooves, said gasket having a plurality of through extending openings therein extending from one relief groove to the other; and a passage extending through one of said flanges and connected to a source of steam at a second pressure, higher than said first pressure, so that steam is supplied to said relief grooves and if there is leakage between said first and second surfaces it is of steam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification