Pipe joints or couplings – Having plural independent paths – For concentric tubes or pipes
Patent
1998-06-08
1999-09-07
Arola, Dave W.
Pipe joints or couplings
Having plural independent paths
For concentric tubes or pipes
285 15, 285187, 2853321, 285363, 376282, F16L 2100
Patent
active
059475293
ABSTRACT:
Coupling apparatus for replacing a core spray line downcomer pipe coupled to a shroud T-box are described. In one embodiment, the coupling apparatus includes a seal ring, a mating flange, a housing having at least one wedge pocket, at least one coupling bolt, at least one wedge and at least one lateral pin. After extending the downcomer pipe into the housing, the seal ring is inserted into the opposite end of the housing adjacent the downcomer pipe. The seal ring is then seated on the mating flange seat. The two seats allow the downcomer pipe to be rotational misaligned with the coupling apparatus. The coupling bolts extend through the mating flange and the housing to rigidly secure the downcomer pipe to the coupling apparatus. Lateral pins extend through the housing and the downcomer pipe to provide vertical and torsional load transfer from the downcomer pipe to the coupling apparatus. Wedges are positioned in the wedge pockets and engage the downcomer pipe to provide resistance to a bending moment imposed on the coupling apparatus.
REFERENCES:
patent: 790767 (1905-05-01), Walsh
patent: 924279 (1909-06-01), Seiffert
patent: 1650102 (1927-11-01), Tschappat
patent: 2031654 (1936-02-01), Howard
patent: 2207471 (1940-07-01), Yancey
patent: 2563851 (1951-08-01), Lundeen et al.
patent: 4647084 (1987-03-01), Hagin et al.
patent: 5737380 (1998-04-01), Deaver et al.
Arola Dave W.
General Electric Company
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