Closure device for upper head of coking drums
First Claim
1. A closure device for rigid attachment onto an upper head of a coking drum, said device comprising:
- (a) an elongated cylindrical-shaped housing having an upper end and a lower end with a flange provided at the housing lower end for attachment pressure-tightly onto a coking drum upper head flange, said housing including a flange provided at the housing upper end;
(b) a rotary ball valve provided within a lower portion of said housing, said ball valve including an spherical-shaped rotor and having a cylindrical-shaped opening extending through the valve rotor and including an elongated stem rigidly attached onto the valve rotor at a 90°
angle to the rotor opening and extending pressure-tightly through a side wall of said housing;
(c) a flanged cover unit attached onto said housing upper end flange, said cover unit including a packing gland; and
(d) a rotatable cutting tool including an elongated drive rod extending through said packing gland, said cutting tool being sized for passage downwardly through the opening in said ball valve rotor and into a coking drum for drilling and dislodging coke deposits in the coking drum.
9 Assignments
0 Petitions
Accused Products
Abstract
A closure device adapted for attachment onto the upper head of a coking drum to prevent hot vapors escaping during drum decoking operations. The closure device includes a cylindrical-shaped housing having a rotatable ball valve and horizontal elongated stem provided in its lower portion, and a cover unit including a packing gland provided at the housing upper end. A rotatable cutting tool provided within the housing above the ball valve has a drive rod extending upwardly through the cover unit packing gland. During operations, the ball valve is opened and the drive rod and its attached cutting tool can be extended downwardly through the ball valve cylindrical-shaped opening into the coking drum and rotated, so as to cut and dislodge coke deposited in the drum.
44 Citations
12 Claims
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1. A closure device for rigid attachment onto an upper head of a coking drum, said device comprising:
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(a) an elongated cylindrical-shaped housing having an upper end and a lower end with a flange provided at the housing lower end for attachment pressure-tightly onto a coking drum upper head flange, said housing including a flange provided at the housing upper end; (b) a rotary ball valve provided within a lower portion of said housing, said ball valve including an spherical-shaped rotor and having a cylindrical-shaped opening extending through the valve rotor and including an elongated stem rigidly attached onto the valve rotor at a 90°
angle to the rotor opening and extending pressure-tightly through a side wall of said housing;(c) a flanged cover unit attached onto said housing upper end flange, said cover unit including a packing gland; and (d) a rotatable cutting tool including an elongated drive rod extending through said packing gland, said cutting tool being sized for passage downwardly through the opening in said ball valve rotor and into a coking drum for drilling and dislodging coke deposits in the coking drum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A closure device for rigid attachment onto an upper head of a coking drum, said device comprising:
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(a) an elongated cylindrical-shaped housing having an upper end and a lower end, with a flange provided at the housing lower end for attachment pressure-tightly onto a coking drum upper head flange, said housing including a flange provided at the housing upper end; (b) a rotary ball valve provided within a lower portion of said housing, said ball valve including a spherical-shaped rotor fitting closely within a resilient seal provided in said housing, and having a cylindrical-shaped opening extending through the valve rotor, said valve rotor having an elongated stem rigidly attached onto the valve rotor at a 90°
angle to said rotor opening and extending through a side wall of said housing, said stem being connected at its outer end to an actuator means for rotating the ball valve rotor through a 90°
angle from a closed position to an open position;(c) a flanged cover unit attached pressure-tightly onto said housing upper end flange, said cover unit including a packing gland; (d) a gas purge connection and a vent connection attached to the housing above the ball valve; and (e) a rotatable cutting tool including an elongated drive rod extending through said packing gland and having a cutting blade attached to the drive rod, said cutting tool being sized for passage downwardly through the opening in said ball valve rotor and into a coking drum for cutting and dislodging coke deposits in the coking drum.
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Specification