发明名称 |
SELF-ALIGNING STUFFING BOX |
摘要 |
A self-aligning stuffing box having a spherical joint between the upper and lower portions of the housing permits universal movement of the upper portion relative to the lower portion to permit a rod to pass through the bore if the axis of the rod is misaligned relative to the axis of the bore i n each of the upper and lower housing portions. An energized seal in the upper housing resides at or below the spherical joint due to a downwardly depending centra l portion of the upper housing which extends into a recess formed in the lower housing permitting the height of the stuffing box to be relatively short. A second seal is positioned above the first seal and may be spaced sufficiently above the first seal to permit a flapper valve to be installed between the seals. The flapper valve is mounted through a port in the upper housing which is accessible without disassembly of the stuffing box, the seals or the wellhead.
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申请公布号 |
CA2509182(A1) |
申请公布日期 |
2006.12.03 |
申请号 |
CA20052509182 |
申请日期 |
2005.06.03 |
申请人 |
MSI MACHINEERING SOLUTIONS INC. |
发明人 |
WEBER, JAMES L.;DOYLE, JOHN P.;TESSIER, LYNN P. |
分类号 |
F16J15/18;E21B33/08 |
主分类号 |
F16J15/18 |
代理机构 |
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