Seat and valve systems for use in delayed coker system
First Claim
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1. A valve seat system comprising:
- a bifurcated first seat comprising an upper first seat segment biased against a lower first seat, wherein when the upper first seat segment is positioned on top of the lower first seat segment, a cavity is formed between the upper first seat segment and the lower first seat segment, the upper first seat segment being connected to the lower first seat segment by one or more shoulder bolts which limit the downward movement of the lower first seat segment when the position of the upper first seat segment remains fixed, the one or more shoulder bolts extending from the upper first seat segment through the cavity and into the lower first seat segment;
at least one spring disposed within the cavity between the upper and lower first seat segments, each spring biasing the lower first seat segment away from the upper first seat segment;
a packing gland disposed within the cavity between the upper and lower first seat segments; and
a blind in contact with the lower first seat segment, wherein the spring allows the lower first seat segment to move vertically with the contour of the blind as the blind is slid within the valve seat system while the upper first seat segment remains fixed.
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Abstract
The present invention provides more efficient, cost effective coke drum valve devices and system as well as more efficient, cost effective methods for isolating the flow of matter in a delayed coker unit operation. Specifically, embodiments of the invention relate to various seat systems used in valves for delayed coking operations.
112 Citations
18 Claims
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1. A valve seat system comprising:
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a bifurcated first seat comprising an upper first seat segment biased against a lower first seat, wherein when the upper first seat segment is positioned on top of the lower first seat segment, a cavity is formed between the upper first seat segment and the lower first seat segment, the upper first seat segment being connected to the lower first seat segment by one or more shoulder bolts which limit the downward movement of the lower first seat segment when the position of the upper first seat segment remains fixed, the one or more shoulder bolts extending from the upper first seat segment through the cavity and into the lower first seat segment; at least one spring disposed within the cavity between the upper and lower first seat segments, each spring biasing the lower first seat segment away from the upper first seat segment; a packing gland disposed within the cavity between the upper and lower first seat segments; and a blind in contact with the lower first seat segment, wherein the spring allows the lower first seat segment to move vertically with the contour of the blind as the blind is slid within the valve seat system while the upper first seat segment remains fixed. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A valve seat system comprising:
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a first seat; a second seat aligned with said first seat; a blind comprising a planar surface that contacts a lower edge of the first seat and an upper edge of the second seat; wherein the first seat comprises; an upper seat segment biased against a lower first seat, wherein when the upper first seat segment is positioned on top of the lower first seat segment, a cavity is formed between the upper first seat segment and the lower first seat segment, the upper first seat segment being connected to the lower first seat segment by one or more shoulder bolts which limit the downward movement of the lower first seat segment when the position of the upper first seat segment remains fixed, the one or more shoulder bolts extending from the upper first seat segment through the cavity and into the lower first seat segment; at least one spring disposed within the cavity between the upper and lower first seat segments, each spring biasing the lower first seat segment away from the upper first seat segment; and a packing gland disposed within the cavity between the upper and lower first seat segments; wherein the spring allows the lower first seat segment to move vertically with the contour of the blind as the blind is slid between the first and second seats while the upper first seat segment remains fixed. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A bifurcated seat assembly, comprising:
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an upper seat segment that is fixed to the body of a valve; a lower seat segment configured to be positioned below the upper seat segment within the bifurcated seat assembly, wherein, when the lower seat segment is positioned below the upper seat segment, a cavity is formed between the upper and lower seat segment; one or more shoulder bolts that extend from the upper seat segment through the cavity and into the lower seat segment, the one or more shoulder bolts limiting the downward movement of the lower seat segment; one or more springs positioned within the cavity between the upper and lower seat segments, each spring applying a force to the upper and lower seat segment to bias the lower seat segment away from the upper seat segment; and a packing gland positioned within the cavity between the upper and lower seat segments. - View Dependent Claims (17, 18)
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Specification