Pipe joints or couplings – Swivel – Pipe in socket type
Patent
1991-02-28
1992-05-05
Nicholson, Eric K.
Pipe joints or couplings
Swivel
Pipe in socket type
285190, 285134, F16L 2708
Patent
active
051101629
ABSTRACT:
This invention pertains to a rotary joint for use with rotating machinery where the joint is conveying high temperature corrosive fluids such as molten salts. The joint includes both a stationary head to which external connections are made and a housing mounted on and rotating with a rotary apparatus with which the joint communicates. Alignment of the components is maintained through the interaction of two sleeve bearings disposed between a nipple coaxially extending from the head and the joint housing surrounding the nipple; the sleeve bearings being axially displaced from each other, the primary seal occupying an intermediate position. The primary seal is a spherical seal, interposed between a stationary nipple seal surface and a rotary housing sealing surface. The seal is preloaded by means of an external joint biasing support bracket to reduce leakage under conditions of low internal fluid pressures.
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Peter John H.
Timm Gerald L.
Nicholson Eric K.
The Johnson Corporation
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