Seat system for coke drum deheading valve
First Claim
1. A seat system of a deheading valve for use on a coke drum, the seat system comprising:
- a first seat assembly attached to a main body of the deheading valve; and
a second seat assembly attached to the main body opposite the first seat assembly so that a blind can slide between the first and second seat assemblies to open and close the deheading valve, wherein the second seat assembly comprises;
a seat that contacts the blind;
a packing gland comprised of a plurality of split rings that each include a recess, the seat being secured to the packing gland; and
a retainer secured to the main body, the retainer including a protrusion which inserts into the recess in each of the split rings of the packing gland, the protrusion being positioned to limit movement of the packing gland away from the retainer.
9 Assignments
0 Petitions
Accused Products
Abstract
A seat system for a coke drum deheading valve can include a groove in the surface of the seat for supplying a lubricant to the surface of the seat. Various channels can be formed in the body of the seat that connect to the groove. In this way, lubricant can be flowed through the channels and into the groove to provide lubrication between the surface of the seat and the blind. The seat system can also include a split ring packing gland to facilitate the formation of a seal within the deheading valve. The split ring packing gland can be used to retain and compress packing positioned between a retaining ring and a dynamic seat such that when the packing is compressed, an improved seal is formed. By improving the seal, less steam can be required during the delayed coking process thereby increasing the efficiency of the system.
7 Citations
14 Claims
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1. A seat system of a deheading valve for use on a coke drum, the seat system comprising:
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a first seat assembly attached to a main body of the deheading valve; and a second seat assembly attached to the main body opposite the first seat assembly so that a blind can slide between the first and second seat assemblies to open and close the deheading valve, wherein the second seat assembly comprises; a seat that contacts the blind; a packing gland comprised of a plurality of split rings that each include a recess, the seat being secured to the packing gland; and a retainer secured to the main body, the retainer including a protrusion which inserts into the recess in each of the split rings of the packing gland, the protrusion being positioned to limit movement of the packing gland away from the retainer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A seat system of a deheading valve for use on a coke drum, the seat system comprising:
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an upper seat assembly attached to a main body of the deheading valve; and a lower seat assembly attached to the main body opposite the upper seat assembly so that a blind can slide between the upper and lower seat assemblies to open and close the deheading valve; wherein the upper seat assembly comprises; an upper seat that contacts the blind; a packing gland comprised of a plurality of split rings that each include a recess, the upper seat being secured to the packing gland; and a retainer secured to the main body, the retainer including a protrusion which inserts into the recess in each of the split rings of the packing gland, the protrusion being positioned to limit movement of the packing gland away from the retainer; and wherein the lower seat assembly comprises; a lower seat that includes a surface that contacts the blind, the surface including a groove in which lubricant is flowed to provide lubrication between the surface and the blind. - View Dependent Claims (14)
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Specification