Pipes and tubular conduits – With pressure compensators – Variable capacity chambers
Patent
1983-04-15
1985-06-18
Bryant, III, James E.
Pipes and tubular conduits
With pressure compensators
Variable capacity chambers
138 26, 417540, 181207, 181208, 285 49, 285226, F16L 5504
Patent
active
045236127
ABSTRACT:
Flexible bellows are utilized between two systems, such as a pumping system and a process station, to partially absorb system vibrations and to compensate for misalignment between the systems. It is common practice to either clamp a rigid spacer between flanges of the two systems (FIG. 3B) to separate them from each other, or to maintain the bellows in unsupported relationship between these systems (FIG. 4B). In the former bellows arrangement, the rigid spacer transmits vibratory energy between the two systems and the bellows tends to function as an undamped or underdamped unit that resonates at its own frequency to create additional vibratory energy, transmitted to the systems. In the latter, unsupported bellows arrangement (FIG. 4B), the pressure differential prevalent between the fluid flowing through the bellows and ambient normally causes extension or retraction of the bellows and resulting misalignment problems. The present invention substantially solves the above vibration and misalignment problems by providing an inflatable tube (20) in surrounding relationship about a bellows (14) to suppress vibration and displacement thereof. A method for isolating first and second systems (11,12) from each other to prevent the transmission of vibratory energy therebetween comprises the steps of attaching at least one flexible bellows (14) between the systems (11,12), surrounding the bellows with an inflatable tube (20), and maintaining a predetermined pressure in the tube (20) to urge the tube in flexible contact with at least some of the convolutions of the bellows (14).
REFERENCES:
patent: 2010546 (1935-08-01), Kenney
patent: 2241245 (1941-05-01), Daniels
patent: 2677393 (1954-05-01), Cornelius
patent: 2919715 (1960-01-01), Rockwell
patent: 3061039 (1962-10-01), Peters
patent: 3420553 (1969-01-01), Poxon et al.
patent: 3766992 (1973-10-01), Tiraspolsky et al.
patent: 3874708 (1975-04-01), Greasens
Bryant III James E.
Dixon Harold M.
Hightower Judson R.
Rajender Shyamala T.
The United States of America as represented by the United States
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