Pipe joints or couplings – With assembly means or feature
Patent
1987-11-06
1989-04-11
Callaghan, Thomas F.
Pipe joints or couplings
With assembly means or feature
285106, 285110, 285136, 285190, F16L 1700
Patent
active
048199664
ABSTRACT:
A means of sealing a multipath, multipass swivel whereby that part of the structure housing the seal element deflects under pressure to compensate for the overall structural deflections, such that a constant seal gap is maintained. A means of lubricating and flushing seal surfaces is also disclosed whereby a controlled liquid is injected between two seals at a higher pressure than the production fluid such that the seal between the injected liquid and the production fluid is less capable than the seal between the controlled liquid and ambient.
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Journal of Engineering for Industry, Application of Primary Sealing Criteria to a Self Energized Gasket, pp. 553-562, Aug. 1979.
Callaghan Thomas F.
Canocean Engineering Ltd.
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